fix rare race condition in debug vid src

Merge commit '261d2e53b7a513de7eb35e022fe3b2ae4efa835f'

.github/workflows/cd.yml

@@ -7,7 +7,7 @@ on:
     branches: [ master ]
 
 env:
-  BUILD_TYPE: Release
+  BUILD_TYPE: RelWithDebInfo
   BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
 
 jobs:
@@ -17,18 +17,18 @@ jobs:
     runs-on: ubuntu-20.04
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
     - name: Install Dependencies
-      run: sudo apt update && sudo apt -y install libsodium-dev
+      run: sudo apt update && sudo apt -y install libsodium-dev cmake libvpx-dev libopus-dev
 
     - name: Configure CMake
-      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DTOMATO_BREAKPAD=ON -DTOMATO_TOX_AV=ON -DCMAKE_EXE_LINKER_FLAGS=-gz
 
     - name: Build
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato
 
     - name: Determine tag name
       id: tag
@@ -50,36 +50,69 @@ jobs:
 
     - uses: actions/upload-artifact@v4
       with:
-        # TODO: simpler name?
         name: ${{ github.event.repository.name }}-${{ steps.tag.outputs.name }}-${{ runner.os }}-ubuntu20.04-x86_64
         # TODO: do propper packing
         path: |
           ${{github.workspace}}/${{ github.event.repository.name }}-${{ steps.tag.outputs.name }}-${{ runner.os }}-ubuntu20.04-x86_64.tar.gz
 
+  android:
+    timeout-minutes: 30
+    # contains sections copied from sdl repo
 
-  windows:
-    timeout-minutes: 15
+    runs-on: ubuntu-latest
 
-    runs-on: windows-2019
+    strategy:
+      matrix:
+        platform:
+          - vcpkg_toolkit: arm-neon-android
+            ndk_abi: armeabi-v7a
+          - vcpkg_toolkit: arm64-android
+            ndk_abi: arm64-v8a
+          - vcpkg_toolkit: x64-android
+            ndk_abi: x86_64
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
-    - name: Install Dependencies
-      run: vcpkg install libsodium:x64-windows-static pthreads:x64-windows-static
-
-    # setup vs env
-    - uses: ilammy/msvc-dev-cmd@v1
+    - uses: nttld/setup-ndk@v1
+      id: setup_ndk
       with:
-        arch: amd64
+        local-cache: false # https://github.com/nttld/setup-ndk/issues/518
+        ndk-version: r26d
 
+    - uses: actions/setup-java@v4
+      with:
+        distribution: 'temurin'
+        java-version: '17'
+
+    - name: update vcpkg
+      run: |
+        git clone https://github.com/microsoft/vcpkg.git
+
+    - name: Install Dependencies (host)
+      run: sudo apt update && sudo apt -y install cmake pkg-config nasm
+
+    - name: Install Dependencies (target)
+      env:
+        ANDROID_NDK_HOME: ${{steps.setup_ndk.outputs.ndk-path}}
+      run: vcpkg install --triplet ${{matrix.platform.vcpkg_toolkit}} --overlay-ports=vcpkg/ports libsodium opus libvpx libpng libjpeg-turbo
+
+    # vcpkg scripts root /usr/local/share/vcpkg/scripts
     - name: Configure CMake
-      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static
+      env:
+        ANDROID_NDK_HOME: ${{steps.setup_ndk.outputs.ndk-path}}
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=/usr/local/share/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=${{matrix.platform.vcpkg_toolkit}} -DANDROID=1 -DANDROID_PLATFORM=23 -DANDROID_ABI=${{matrix.platform.ndk_abi}} -DVCPKG_CHAINLOAD_TOOLCHAIN_FILE=${{steps.setup_ndk.outputs.ndk-path}}/build/cmake/android.toolchain.cmake -DSDLIMAGE_JPG_SHARED=OFF -DSDLIMAGE_PNG_SHARED=OFF -DTOMATO_MAIN_SO=ON -DTOMATO_TOX_AV=ON -DCMAKE_EXE_LINKER_FLAGS=-gz
 
-    - name: Build
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+    - name: Build (tomato)
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato
+
+    - name: Build (SDL3-jar) (workaround)
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t SDL3-jar
+
+    - name: Build (apk)
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato-apk
 
     - name: Determine tag name
       id: tag
@@ -94,6 +127,69 @@ jobs:
           echo "name=dev-${SAFE_NAME}-${SHORT_HASH}" >> $GITHUB_OUTPUT
         fi
 
+    - name: rename apk
+      id: rename_apk
+      shell: bash
+      run: mv "${{github.workspace}}/build/android/tomato.apk" "${{github.workspace}}/build/android/${{github.event.repository.name}}-${{steps.tag.outputs.name}}-Android-${{matrix.platform.ndk_abi}}.apk"
+
+    - uses: actions/upload-artifact@v4
+      with:
+        name: ${{github.event.repository.name}}-${{steps.tag.outputs.name}}-${{runner.os}}-Android-${{matrix.platform.ndk_abi}}
+        path: |
+          ${{github.workspace}}/build/android/${{github.event.repository.name}}-${{steps.tag.outputs.name}}-Android-${{matrix.platform.ndk_abi}}.apk
+
+  windows:
+    timeout-minutes: 15
+
+    runs-on: windows-2019
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: recursive
+
+    #- name: update vcpkg
+    #  shell: bash
+    #  run: |
+    #    cd C:/vcpkg
+    #    git pull
+
+    - name: Install Dependencies
+      run: vcpkg install pkgconf:x64-windows libsodium:x64-windows-static pthreads:x64-windows-static opus:x64-windows-static libvpx:x64-windows-static
+
+    # setup vs env
+    - uses: ilammy/msvc-dev-cmd@v1
+      with:
+        arch: amd64
+
+    ## sdl_image vendored needs nasm for dav1d
+    #- uses: ilammy/setup-nasm@v1
+
+    - name: Configure CMake
+      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static -DSDLIMAGE_VENDORED=ON -DSDLIMAGE_DEPS_SHARED=ON -DSDLIMAGE_JXL=OFF -DSDLIMAGE_AVIF=OFF -DPKG_CONFIG_EXECUTABLE=C:/vcpkg/installed/x64-windows/tools/pkgconf/pkgconf.exe -DTOMATO_BREAKPAD=ON -DTOMATO_TOX_AV=ON
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -t tomato
+
+    - name: Determine tag name
+      id: tag
+      shell: bash
+      # taken from llama.cpp
+      run: |
+        SHORT_HASH="$(git rev-parse --short=7 HEAD)"
+        if [[ "${{ env.BRANCH_NAME }}" == "master" ]]; then
+          echo "name=dev-${SHORT_HASH}" >> $GITHUB_OUTPUT
+        else
+          SAFE_NAME=$(echo "${{ env.BRANCH_NAME }}" | tr '/' '-')
+          echo "name=dev-${SAFE_NAME}-${SHORT_HASH}" >> $GITHUB_OUTPUT
+        fi
+
+    - name: Clean temporary artifacts
+      # msvc sometimes produces .ilk files, which are used for linking only
+      shell: powershell
+      run: |
+        Remove-Item "${{github.workspace}}/build/bin/*.ilk"
+
     - name: Compress artifacts
       shell: powershell
       run: |
@@ -101,8 +197,7 @@ jobs:
 
     - uses: actions/upload-artifact@v4
       with:
-        # TODO: simpler name?
-        name: ${{ github.event.repository.name }}-${{ steps.tag.outputs.name }}-${{ runner.os }}-msvc-x86_64
+        name: ${{github.event.repository.name}}-${{steps.tag.outputs.name}}-${{runner.os}}-msvc-x86_64
         # TODO: do propper packing
         path: |
           ${{github.workspace}}/${{ github.event.repository.name }}-${{ steps.tag.outputs.name }}-${{ runner.os }}-msvc-x86_64.zip
@@ -114,23 +209,32 @@ jobs:
     runs-on: windows-2019
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
+    #- name: update vcpkg
+    #  shell: bash
+    #  run: |
+    #    cd C:/vcpkg
+    #    git pull
+
     - name: Install Dependencies
-      run: vcpkg install libsodium:x64-windows-static pthreads:x64-windows-static
+      run: vcpkg install pkgconf:x64-windows libsodium:x64-windows-static pthreads:x64-windows-static opus:x64-windows-static libvpx:x64-windows-static
 
     # setup vs env
     - uses: ilammy/msvc-dev-cmd@v1
       with:
         arch: amd64
 
+    ## sdl_image vendored needs nasm for dav1d
+    #- uses: ilammy/setup-nasm@v1
+
     - name: Configure CMake
-      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static -DTOMATO_ASAN=ON -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded
+      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static -DTOMATO_ASAN=ON -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded -DSDLIMAGE_VENDORED=ON -DSDLIMAGE_DEPS_SHARED=ON -DSDLIMAGE_JXL=OFF -DSDLIMAGE_AVIF=OFF -DPKG_CONFIG_EXECUTABLE=C:/vcpkg/installed/x64-windows/tools/pkgconf/pkgconf.exe -DTOMATO_TOX_AV=ON
 
     - name: Build
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato
 
     - name: Determine tag name
       id: tag
@@ -145,6 +249,12 @@ jobs:
           echo "name=dev-${SAFE_NAME}-${SHORT_HASH}" >> $GITHUB_OUTPUT
         fi
 
+    - name: Clean temporary artifacts
+      # msvc sometimes produces .ilk files, which are used for linking only
+      shell: powershell
+      run: |
+        Remove-Item "${{github.workspace}}/build/bin/*.ilk"
+
     - name: Compress artifacts
       shell: powershell
       run: |
@@ -152,7 +262,6 @@ jobs:
 
     - uses: actions/upload-artifact@v4
       with:
-        # TODO: simpler name?
         name: ${{ github.event.repository.name }}-${{ steps.tag.outputs.name }}-${{ runner.os }}-msvc-asan-x86_64
         # TODO: do propper packing
         path: |
@@ -165,6 +274,7 @@ jobs:
 
     needs:
       - linux-ubuntu
+      - android
       - windows
       - windows-asan
 
@@ -172,7 +282,7 @@ jobs:
       contents: write
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 

.github/workflows/ci.yml

@@ -16,18 +16,85 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
     - name: Install Dependencies
-      run: sudo apt update && sudo apt -y install libsodium-dev
+      run: sudo apt update && sudo apt -y install libsodium-dev cmake
 
     - name: Configure CMake
       run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
 
     - name: Build
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato
+
+  android:
+    timeout-minutes: 30
+    # contains sections copied from sdl repo
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        platform:
+          - vcpkg_toolkit: arm-neon-android
+            ndk_abi: armeabi-v7a
+          - vcpkg_toolkit: arm64-android
+            ndk_abi: arm64-v8a
+          - vcpkg_toolkit: x64-android
+            ndk_abi: x86_64
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: recursive
+
+    - uses: nttld/setup-ndk@v1
+      id: setup_ndk
+      with:
+        local-cache: false # https://github.com/nttld/setup-ndk/issues/518
+        ndk-version: r26d
+
+    - uses: actions/setup-java@v4
+      with:
+        distribution: 'temurin'
+        java-version: '17'
+
+    #- name: update vcpkg
+    #  run: |
+    #    git clone https://github.com/microsoft/vcpkg.git
+
+    - name: Install Dependencies (host)
+      run: sudo apt update && sudo apt -y install cmake pkg-config nasm
+
+    - name: Install Dependencies (target)
+      env:
+        ANDROID_NDK_HOME: ${{steps.setup_ndk.outputs.ndk-path}}
+      #run: vcpkg install --triplet ${{matrix.platform.vcpkg_toolkit}} --overlay-ports=vcpkg/ports libsodium opus libvpx libpng libjpeg-turbo
+      run: vcpkg install --triplet ${{matrix.platform.vcpkg_toolkit}} libsodium opus libvpx libpng libjpeg-turbo
+
+    # vcpkg scripts root /usr/local/share/vcpkg/scripts
+    - name: Configure CMake
+      env:
+        ANDROID_NDK_HOME: ${{steps.setup_ndk.outputs.ndk-path}}
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=/usr/local/share/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=${{matrix.platform.vcpkg_toolkit}} -DANDROID=1 -DANDROID_PLATFORM=23 -DANDROID_ABI=${{matrix.platform.ndk_abi}} -DVCPKG_CHAINLOAD_TOOLCHAIN_FILE=${{steps.setup_ndk.outputs.ndk-path}}/build/cmake/android.toolchain.cmake -DSDLIMAGE_JPG_SHARED=OFF -DSDLIMAGE_PNG_SHARED=OFF -DTOMATO_MAIN_SO=ON
+
+    - name: Build (tomato)
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato
+
+    - name: Build (SDL3-jar) (workaround)
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t SDL3-jar
+
+    - name: Build (apk)
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato-apk
+
+    - uses: actions/upload-artifact@v4
+      with:
+        name: ${{ github.event.repository.name }}-${{matrix.platform.vcpkg_toolkit}}
+        # TODO: do propper packing
+        path: |
+          ${{github.workspace}}/build/android/tomato.apk
 
   macos:
     timeout-minutes: 10
@@ -35,7 +102,7 @@ jobs:
     runs-on: macos-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
@@ -46,29 +113,38 @@ jobs:
       run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
 
     - name: Build
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato
 
   windows:
-    timeout-minutes: 10
+    timeout-minutes: 15
 
     runs-on: windows-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
+    #- name: update vcpkg
+    #  shell: bash
+    #  run: |
+    #    cd C:/vcpkg
+    #    git pull
+
     - name: Install Dependencies
-      run: vcpkg install libsodium:x64-windows-static pthreads:x64-windows-static
+      run: vcpkg install pkgconf:x64-windows libsodium:x64-windows-static pthreads:x64-windows-static opus:x64-windows-static libvpx:x64-windows-static
 
     # setup vs env
     - uses: ilammy/msvc-dev-cmd@v1
       with:
         arch: amd64
 
+    ## sdl_image vendored needs nasm for dav1d
+    #- uses: ilammy/setup-nasm@v1
+
     - name: Configure CMake
-      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static
+      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static -DSDLIMAGE_VENDORED=ON -DSDLIMAGE_DEPS_SHARED=ON -DSDLIMAGE_JXL=OFF -DSDLIMAGE_AVIF=OFF -DPKG_CONFIG_EXECUTABLE=C:/vcpkg/installed/x64-windows/tools/pkgconf/pkgconf.exe
 
     - name: Build
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4 -t tomato
 

CMakeLists.txt

@@ -18,14 +18,28 @@ set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 
+option(TOMATO_MAIN_SO "Build tomato as a shared object (for eg android apps)" ANDROID)
 option(TOMATO_ASAN "Build tomato with asan (gcc/clang/msvc)" OFF)
+option(TOMATO_BREAKPAD "Build tomato with breakpad crash dumping" OFF)
+option(TOMATO_TOX_AV "Build tomato with ToxAV" OFF)
+
 
 if (TOMATO_ASAN)
 	if (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU" OR ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
 		if (NOT WIN32) # exclude mingw
-			#link_libraries(-fsanitize=address)
-			link_libraries(-fsanitize=address,undefined)
-			#link_libraries(-fsanitize=undefined)
+			add_compile_options(-fno-omit-frame-pointer)
+			add_compile_options(-fsanitize=address,undefined)
+			#add_compile_options(-fsanitize=address,undefined,pointer-compare,pointer-subtract)
+			#add_compile_options(-fhardened)
+			#add_compile_options(-D_FORTIFY_SOURCE=3 -D_GLIBCXX_ASSERTIONS -ftrivial-auto-var-init=zero -fPIE  -pie  -Wl,-z,relro,-z,now -fstack-protector-strong -fstack-clash-protection -fcf-protection=full)
+
+			add_link_options(-fno-omit-frame-pointer)
+			add_link_options(-fsanitize=address,undefined)
+			#add_link_options(-fsanitize=address,undefined,pointer-compare,pointer-subtract)
+			#add_link_options(-fhardened)
+			#add_link_options(-D_FORTIFY_SOURCE=3 -D_GLIBCXX_ASSERTIONS -ftrivial-auto-var-init=zero -fPIE  -pie  -Wl,-z,relro,-z,now -fstack-protector-strong -fstack-clash-protection -fcf-protection=full)
+
+			link_libraries(-static-libasan) # make it "work" on nix
 			message("II enabled ASAN")
 		else()
 			message("!! can not enable ASAN on this platform (gcc/clang + win)")
@@ -38,8 +52,23 @@ if (TOMATO_ASAN)
 	endif()
 endif()
 
+message("II TOMATO_BREAKPAD: ${TOMATO_BREAKPAD}")
+if (TOMATO_BREAKPAD)
+	if (LINUX) # TODO: test if android
+		# HACK: workaround an ugly cmake bug,
+		# where subdirs can now propergate enable_language upwards
+		enable_language(ASM)
+	endif()
+endif()
+
+message("II TOMATO_TOX_AV: ${TOMATO_TOX_AV}")
+
+# uggly, but it needs to be defined for all of tomato.
+# but this also means that we can not compile tomato in the same cmake as plugins
+add_compile_definitions(ENTT_API_EXPORT)
+
 # external libs
-add_subdirectory(./external) # before increasing warn levels, sad :(
+add_subdirectory(./external EXCLUDE_FROM_ALL) # before increasing warn levels, sad :(
 
 set(CMAKE_CXX_EXTENSIONS OFF)
 
@@ -65,3 +94,10 @@ endif()
 
 add_subdirectory(./src)
 
+# TODO: move to src
+if (ANDROID AND TARGET SDL3::Jar)
+	message("II building for ANDROID!!!")
+
+	add_subdirectory(android)
+endif()
+

android/CMakeLists.txt

@@ -0,0 +1,100 @@
+cmake_minimum_required(VERSION 3.14...3.24 FATAL_ERROR)
+
+project(tomato_android)
+
+# here be dragons
+
+list(APPEND CMAKE_MODULE_PATH "${SDL3_SOURCE_DIR}/cmake/android")
+
+find_package(SdlAndroid MODULE)
+find_package(Java)
+find_package(SdlAndroidPlatform MODULE)
+# the existence of SDL3::Jar usually implies platform
+if(SdlAndroid_FOUND)
+	include(SdlAndroidFunctions)
+	sdl_create_android_debug_keystore(tomato-debug-keystore)
+	sdl_android_compile_resources(tomato-resources RESFOLDER app/res)
+
+
+	set(ANDROID_MANIFEST_PACKAGE "org.libsdl.app.tomato")
+	#set(generated_manifest_path "${CMAKE_CURRENT_BINARY_DIR}/android/${TEST}-src/AndroidManifest.xml")
+	string(REPLACE "." "/" JAVA_PACKAGE_DIR "${ANDROID_MANIFEST_PACKAGE}")
+	#set(GENERATED_SRC_FOLDER "${CMAKE_CURRENT_BINARY_DIR}/android/${TEST}-src")
+	#set(GENERATED_RES_FOLDER "${GENERATED_SRC_FOLDER}/res")
+	#set(JAVA_PACKAGE_DIR "${GENERATED_SRC_FOLDER}/${JAVA_PACKAGE_DIR}")
+	set(JAVA_PACKAGE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/app/java/${JAVA_PACKAGE_DIR}")
+
+	sdl_android_link_resources(tomato-apk-linked
+		MANIFEST "app/AndroidManifest.xml"
+		PACKAGE ${ANDROID_MANIFEST_PACKAGE}
+		RES_TARGETS tomato-resources
+		TARGET_SDK_VERSION 31
+	)
+
+	set(CMAKE_JAVA_COMPILE_FLAGS "-encoding;utf-8")
+	set(classes_path "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/tomato-java.dir/classes")
+	# Some CMake versions have a slow `cmake -E make_directory` implementation
+	if(NOT IS_DIRECTORY "${classes_path}")
+		execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory "${classes_path}")
+	endif()
+	set(OUT_JAR "${CMAKE_CURRENT_BINARY_DIR}/tomato.jar")
+	# TODO: convert to cmake's add_jar
+	add_custom_command(
+		OUTPUT "${OUT_JAR}"
+		COMMAND ${CMAKE_COMMAND} -E rm -rf "${classes_path}"
+		COMMAND ${CMAKE_COMMAND} -E make_directory "${classes_path}"
+		COMMAND ${Java_JAVAC_EXECUTABLE}
+			-source 1.8 -target 1.8
+			-bootclasspath "$<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>"
+			"${JAVA_PACKAGE_DIR}/TomatoActivity.java"
+			$<TARGET_PROPERTY:tomato-apk-linked,JAVA_R>
+			-cp "$<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>:${SDL_ANDROID_PLATFORM_ANDROID_JAR}"
+			-d "${classes_path}"
+		COMMAND ${Java_JAR_EXECUTABLE} cf "${OUT_JAR}" -C "${classes_path}" .
+		DEPENDS $<TARGET_PROPERTY:tomato-apk-linked,OUTPUTS> "$<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>"
+	)
+	add_custom_target(tomato-jar DEPENDS "${OUT_JAR}")
+	add_dependencies(tomato-jar SDL3::Jar) # HACK: somehow their jar is not registered as an output
+	set_property(TARGET tomato-jar PROPERTY OUTPUT "${OUT_JAR}")
+
+	set(dexworkdir "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/tomato-dex.dir")
+	# Some CMake versions have a slow `cmake -E make_directory` implementation
+	if(NOT IS_DIRECTORY "${dexworkdir}")
+		execute_process(COMMAND "${CMAKE_COMMAND}" -E make_directory "${dexworkdir}")
+	endif()
+	set(classes_dex_base_name "classes.dex")
+	set(classes_dex "${dexworkdir}/${classes_dex_base_name}")
+	add_custom_command(
+		OUTPUT "${classes_dex}"
+		COMMAND SdlAndroid::d8
+			$<TARGET_PROPERTY:tomato-jar,OUTPUT>
+			$<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>
+			--lib "${SDL_ANDROID_PLATFORM_ANDROID_JAR}"
+			--output "${dexworkdir}"
+		DEPENDS $<TARGET_PROPERTY:tomato-jar,OUTPUT> $<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>
+	)
+	add_custom_target(tomato-dex DEPENDS "${classes_dex}")
+	set_property(TARGET tomato-dex PROPERTY OUTPUT "${classes_dex}")
+	set_property(TARGET tomato-dex PROPERTY OUTPUT_BASE_NAME "${classes_dex_base_name}")
+
+	# file(GLOB RESOURCE_FILES *.bmp *.wav *.hex moose.dat utf8.txt)
+
+	sdl_add_to_apk_unaligned(tomato-unaligned-apk
+		APK_IN tomato-apk-linked
+		OUTDIR "${CMAKE_CURRENT_BINARY_DIR}/intermediates"
+		#ASSETS ${RESOURCE_FILES}
+		#NATIVE_LIBS SDL3::SDL3-shared tomato
+		NATIVE_LIBS tomato
+		DEX tomato-dex
+	)
+
+	sdl_apk_align(tomato-aligned-apk tomato-unaligned-apk
+		OUTDIR "${CMAKE_CURRENT_BINARY_DIR}/intermediates"
+	)
+	sdl_apk_sign(tomato-apk tomato-aligned-apk
+		KEYSTORE tomato-debug-keystore
+	)
+else()
+	message("EE SdlAndroid module not found")
+endif()
+

android/app/AndroidManifest.xml

@@ -0,0 +1,102 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Replace com.test.game with the identifier of your game below, e.g.
+	com.gamemaker.game
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+	package="org.libsdl.app.tomato"
+	android:versionCode="1"
+	android:versionName="1.0"
+	android:installLocation="auto">
+
+	<!-- OpenGL ES 2.0 -->
+	<uses-feature android:glEsVersion="0x00020000" />
+
+	<!-- Touchscreen support -->
+	<uses-feature
+		android:name="android.hardware.touchscreen"
+		android:required="false" />
+
+	<!-- Game controller support -->
+	<uses-feature
+		android:name="android.hardware.bluetooth"
+		android:required="false" />
+	<uses-feature
+		android:name="android.hardware.gamepad"
+		android:required="false" />
+	<uses-feature
+		android:name="android.hardware.usb.host"
+		android:required="false" />
+
+	<!-- External mouse input events -->
+	<uses-feature
+		android:name="android.hardware.type.pc"
+		android:required="false" />
+
+	<!-- Audio recording support -->
+	<uses-permission android:name="android.permission.RECORD_AUDIO" />
+	<uses-feature
+		android:name="android.hardware.microphone"
+		android:required="false" />
+
+	<!-- Camera support -->
+	<uses-permission android:name="android.permission.CAMERA" />
+	<uses-feature
+		android:name="android.hardware.camera"
+		android:required="false" />
+
+	<uses-permission android:name="android.permission.INTERNET" />
+
+	<!-- Allow downloading to the external storage on Android 5.1 and older -->
+	<!-- <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="22" /> -->
+
+	<!-- Allow access to Bluetooth devices -->
+	<!-- Currently this is just for Steam Controller support and requires setting SDL_HINT_JOYSTICK_HIDAPI_STEAM -->
+	<!-- <uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30" /> -->
+	<!-- <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" /> -->
+
+	<!-- Allow access to the vibrator -->
+	<uses-permission android:name="android.permission.VIBRATE" />
+
+	<!-- Create a Java class extending SDLActivity and place it in a
+		directory under app/src/main/java matching the package, e.g. app/src/main/java/com/gamemaker/game/MyGame.java
+
+		then replace "SDLActivity" with the name of your class (e.g. "MyGame")
+		in the XML below.
+
+		An example Java class can be found in README-android.md
+	-->
+	<application android:label="@string/app_name"
+		android:icon="@mipmap/ic_launcher"
+		android:appCategory="social"
+		android:allowBackup="true"
+		android:theme="@style/AppTheme"
+		android:hardwareAccelerated="true" >
+
+		<!-- setting sdl hints. uses the string value -->
+		<meta-data android:name="SDL_ENV.SDL_ANDROID_BLOCK_ON_PAUSE" android:value="0"/>
+
+		<activity android:name="TomatoActivity"
+			android:label="@string/app_name"
+			android:alwaysRetainTaskState="true"
+			android:launchMode="singleInstance"
+			android:configChanges="layoutDirection|locale|orientation|uiMode|screenLayout|screenSize|smallestScreenSize|keyboard|keyboardHidden|navigation"
+			android:preferMinimalPostProcessing="true"
+			android:exported="true"
+			>
+			<intent-filter>
+				<action android:name="android.intent.action.MAIN" />
+				<category android:name="android.intent.category.LAUNCHER" />
+			</intent-filter>
+			<!-- Let Android know that we can handle some USB devices and should receive this event -->
+			<intent-filter>
+				<action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
+			</intent-filter>
+			<!-- Drop file event -->
+			<intent-filter>
+				<action android:name="android.intent.action.VIEW" />
+				<category android:name="android.intent.category.DEFAULT" />
+				<data android:mimeType="*/*" />
+			</intent-filter>
+		</activity>
+	</application>
+</manifest>

android/app/java/org/libsdl/app/tomato/TomatoActivity.java

@@ -0,0 +1,18 @@
+package org.libsdl.app.tomato;
+
+import org.libsdl.app.SDLActivity;
+
+public class TomatoActivity extends SDLActivity {
+	protected String[] getLibraries() {
+		return new String[] {
+			// "SDL3", // we link statically
+			// "SDL3_image",
+			// "SDL3_mixer",
+			// "SDL3_net",
+			// "SDL3_ttf",
+			// "main"
+			"tomato"
+		};
+	}
+}
+

android/app/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <background android:drawable="@mipmap/ic_launcher_background"/>
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
+</adaptive-icon>

android/app/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Tomato</string>
+</resources>

android/app/res/values/styles.xml

@@ -0,0 +1,10 @@
+<resources>
+
+    <!-- Base application theme. -->
+	<!-- <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar"> -->
+	<!--<style name="AppTheme" parent="android:Theme.AppCompat">-->
+	<style name="AppTheme" parent="android:Theme.NoTitleBar">
+        <!-- Customize your theme here. -->
+    </style>
+
+</resources>

external/CMakeLists.txt

@@ -2,7 +2,10 @@ cmake_minimum_required(VERSION 3.14...3.24 FATAL_ERROR)
 
 add_subdirectory(./entt)
 
+add_subdirectory(./json)
+
 add_subdirectory(./solanaceae_util)
+add_subdirectory(./solanaceae_object_store)
 add_subdirectory(./solanaceae_contact)
 add_subdirectory(./solanaceae_message3)
 add_subdirectory(./solanaceae_message_serializer)
@@ -13,12 +16,15 @@ add_subdirectory(./toxcore)
 add_subdirectory(./solanaceae_toxcore)
 add_subdirectory(./solanaceae_tox)
 
-add_subdirectory(./solanaceae_object_store)
-
 add_subdirectory(./sdl)
 add_subdirectory(./imgui)
 
 add_subdirectory(./stb)
 add_subdirectory(./libwebp)
 add_subdirectory(./qoi)
+add_subdirectory(./sdl_image)
+
+if (TOMATO_BREAKPAD)
+	add_subdirectory(./breakpad)
+endif()
 

external/breakpad/CMakeLists.txt

@@ -0,0 +1,139 @@
+cmake_minimum_required(VERSION 3.16...3.24 FATAL_ERROR)
+
+include(FetchContent)
+
+if (NOT TARGET breakpad_client)
+
+	if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR ${CMAKE_SYSTEM_NAME} STREQUAL "Android")
+		if (NOT TARGET lss)
+			FetchContent_Declare(lss
+				GIT_REPOSITORY https://chromium.googlesource.com/linux-syscall-support/
+				GIT_TAG 9719c1e1e676814c456b55f5f070eabad6709d31
+
+				FIND_PACKAGE_ARGS # for the future
+			)
+			FetchContent_GetProperties(lss)
+			if(NOT lss_POPULATED)
+				FetchContent_Populate(lss)
+
+				# HACK: breakpad expects this at a specific path
+				configure_file(
+					${lss_SOURCE_DIR}/linux_syscall_support.h
+					${CMAKE_CURRENT_BINARY_DIR}/third_party/lss/linux_syscall_support.h
+					@ONLY
+				)
+
+				add_library(lss INTERFACE ${CMAKE_CURRENT_BINARY_DIR}/third_party/lss/linux_syscall_support.h)
+				target_include_directories(lss INTERFACE ${CMAKE_CURRENT_BINARY_DIR})
+			endif()
+		endif()
+	endif()
+
+	FetchContent_Declare(breakpad
+		GIT_REPOSITORY https://chromium.googlesource.com/breakpad/breakpad
+		GIT_TAG v2023.06.01
+
+		FIND_PACKAGE_ARGS # for the future
+	)
+	FetchContent_GetProperties(breakpad)
+	if(NOT breakpad_POPULATED)
+		FetchContent_Populate(breakpad)
+
+		add_library(breakpad_common STATIC
+			${breakpad_SOURCE_DIR}/src/common/convert_UTF.h
+			${breakpad_SOURCE_DIR}/src/common/convert_UTF.cc
+			${breakpad_SOURCE_DIR}/src/common/md5.h
+			${breakpad_SOURCE_DIR}/src/common/md5.cc
+			${breakpad_SOURCE_DIR}/src/common/string_conversion.h
+			${breakpad_SOURCE_DIR}/src/common/string_conversion.cc
+		)
+		target_include_directories(breakpad_common PUBLIC "${breakpad_SOURCE_DIR}/src")
+
+		if (WIN32)
+			target_sources(breakpad_common PUBLIC
+				${breakpad_SOURCE_DIR}/src/common/windows/guid_string.h
+				${breakpad_SOURCE_DIR}/src/common/windows/guid_string.cc
+			)
+
+			add_library(breakpad_client STATIC)
+			target_sources(breakpad_client
+				PUBLIC
+					${breakpad_SOURCE_DIR}/src/client/windows/handler/exception_handler.h
+					${breakpad_SOURCE_DIR}/src/client/windows/common/ipc_protocol.h
+					${breakpad_SOURCE_DIR}/src/client/windows/crash_generation/crash_generation_client.h
+					${breakpad_SOURCE_DIR}/src/client/windows/crash_generation/minidump_generator.h
+				PRIVATE
+					${breakpad_SOURCE_DIR}/src/client/windows/handler/exception_handler.cc
+					${breakpad_SOURCE_DIR}/src/client/windows/crash_generation/crash_generation_client.cc
+					${breakpad_SOURCE_DIR}/src/client/windows/crash_generation/minidump_generator.cc
+			)
+			target_compile_definitions(breakpad_client PRIVATE UNICODE)
+		#elseif() # TODO: mac, ios and any other platform
+		else() # assume linux
+			enable_language(ASM) # mostly to document, needs to be set in parent
+			target_sources(breakpad_common PUBLIC
+				${breakpad_SOURCE_DIR}/src/common/linux/elf_core_dump.cc
+				${breakpad_SOURCE_DIR}/src/common/linux/elfutils.h
+				${breakpad_SOURCE_DIR}/src/common/linux/elfutils.cc
+				${breakpad_SOURCE_DIR}/src/common/linux/file_id.h
+				${breakpad_SOURCE_DIR}/src/common/linux/file_id.cc
+				${breakpad_SOURCE_DIR}/src/common/linux/guid_creator.h
+				${breakpad_SOURCE_DIR}/src/common/linux/guid_creator.cc
+				${breakpad_SOURCE_DIR}/src/common/linux/linux_libc_support.cc
+				${breakpad_SOURCE_DIR}/src/common/linux/memory_mapped_file.cc
+				${breakpad_SOURCE_DIR}/src/common/linux/safe_readlink.cc
+				${breakpad_SOURCE_DIR}/src/common/linux/breakpad_getcontext.h
+				${breakpad_SOURCE_DIR}/src/common/linux/breakpad_getcontext.S
+			)
+			#set_property(SOURCE ${breakpad_SOURCE_DIR}/src/common/linux/breakpad_getcontext.S APPEND PROPERTY COMPILE_OPTIONS "-x" "assembler-with-cpp")
+
+			add_library(breakpad_client STATIC)
+			target_sources(breakpad_client
+				PUBLIC
+					${breakpad_SOURCE_DIR}/src/client/linux/handler/exception_handler.h
+					${breakpad_SOURCE_DIR}/src/client/linux/handler/minidump_descriptor.h
+					${breakpad_SOURCE_DIR}/src/client/linux/crash_generation/crash_generation_client.h
+					${breakpad_SOURCE_DIR}/src/client/linux/log/log.h
+					${breakpad_SOURCE_DIR}/src/client/linux/microdump_writer/microdump_writer.h
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/minidump_writer.h
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/pe_file.h
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/pe_structs.h
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/proc_cpuinfo_reader.h
+				PRIVATE
+					${breakpad_SOURCE_DIR}/src/client/linux/handler/exception_handler.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/handler/minidump_descriptor.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/crash_generation/crash_generation_client.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/crash_generation/crash_generation_server.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/log/log.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/microdump_writer/microdump_writer.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/dump_writer_common/thread_info.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/dump_writer_common/ucontext_reader.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/minidump_writer.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/linux_core_dumper.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/linux_dumper.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/linux_ptrace_dumper.cc
+					${breakpad_SOURCE_DIR}/src/client/linux/minidump_writer/pe_file.cc
+			)
+		endif()
+
+		if (TARGET lss)
+			target_link_libraries(breakpad_common PUBLIC lss)
+			target_link_libraries(breakpad_client PUBLIC lss)
+		endif()
+
+		if (TARGET breakpad_client)
+			if (NOT WIN32)
+				target_sources(breakpad_client PUBLIC
+					${breakpad_SOURCE_DIR}/src/client/minidump_file_writer-inl.h
+					${breakpad_SOURCE_DIR}/src/client/minidump_file_writer.h
+					${breakpad_SOURCE_DIR}/src/client/minidump_file_writer.cc
+				)
+			endif()
+			target_link_libraries(breakpad_client PUBLIC breakpad_common)
+			target_include_directories(breakpad_client PUBLIC "${breakpad_SOURCE_DIR}/src")
+			target_compile_features(breakpad_client PUBLIC cxx_std_11)
+		endif()
+	endif()
+	#FetchContent_MakeAvailable(breakpad)
+endif()
+

external/imgui/CMakeLists.txt

@@ -18,6 +18,7 @@ add_library(imgui
 	imgui/misc/cpp/imgui_stdlib.cpp
 )
 
+target_compile_definitions(imgui PUBLIC IMGUI_USE_WCHAR32)
 target_compile_features(imgui PUBLIC cxx_std_11)
 
 target_include_directories(imgui PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")

external/imgui/imgui/.github/FUNDING.yml

@@ -1 +1 @@
-custom: ['https://github.com/ocornut/imgui/wiki/Sponsors']
+custom: ['https://github.com/ocornut/imgui/wiki/Funding']

external/imgui/imgui/.github/workflows/build.yml

@@ -8,6 +8,7 @@ on:
     # "scheduled" workflow, while maintaining ability to perform local CI builds.
     workflows:
       - scheduled
+      - manual
     branches:
       - master
       - docking
@@ -21,7 +22,7 @@ jobs:
       VS_PATH: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\
       MSBUILD_PATH: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install Dependencies
         shell: powershell
@@ -123,6 +124,11 @@ jobs:
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj /p:Platform=Win32 /p:Configuration=Release'
         if: github.event_name == 'workflow_run'
 
+      - name: Build Win32 example_sdl2_sdlrenderer2
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_sdlrenderer2/example_sdl2_sdlrenderer2.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'workflow_run'
+
       - name: Build Win32 example_sdl2_vulkan
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_vulkan/example_sdl2_vulkan.vcxproj /p:Platform=Win32 /p:Configuration=Release'
@@ -168,6 +174,11 @@ jobs:
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj /p:Platform=x64 /p:Configuration=Release'
 
+      - name: Build x64 example_sdl2_sdlrenderer2
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_sdlrenderer2/example_sdl2_sdlrenderer2.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'workflow_run'
+
       - name: Build x64 example_sdl2_vulkan
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_vulkan/example_sdl2_vulkan.vcxproj /p:Platform=x64 /p:Configuration=Release'
@@ -207,9 +218,9 @@ jobs:
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx12/example_win32_directx12.vcxproj /p:Platform=x64 /p:Configuration=Release'
 
   Linux:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install Dependencies
       run: |
@@ -313,6 +324,18 @@ jobs:
         EOF
         g++ -I. -std=c++11 -Wall -Wformat -o example_single_file example_single_file.cpp
 
+    - name: Build example_null (with C++20)
+      run: |
+        cat > example_single_file.cpp <<'EOF'
+
+        #define IMGUI_DISABLE_OBSOLETE_KEYIO
+        #define IMGUI_IMPLEMENTATION
+        #include "misc/single_file/imgui_single_file.h"
+        #include "examples/example_null/main.cpp"
+
+        EOF
+        g++ -I. -std=c++20 -Wall -Wformat -o example_single_file example_single_file.cpp
+
     - name: Build example_null (with IMGUI_DISABLE_DEMO_WINDOWS and IMGUI_DISABLE_DEBUG_TOOLS)
       run: |
         cat > example_single_file.cpp <<'EOF'
@@ -370,6 +393,18 @@ jobs:
         EOF
         g++ -I. -std=c++11 -Wall -Wformat -o example_single_file example_single_file.cpp
 
+    - name: Build example_null (C++26, Clang)
+      run: |
+        cat > example_single_file.cpp <<'EOF'
+
+        #define IMGUI_IMPLEMENTATION
+        #define IMGUI_DISABLE_DEMO_WINDOWS
+        #include "misc/single_file/imgui_single_file.h"
+        #include "examples/example_null/main.cpp"
+
+        EOF
+        clang++ -I. -std=c++26 -Wall -Wformat -fno-exceptions -fno-threadsafe-statics -lc -lm -o example_single_file example_single_file.cpp
+
     - name: Build example_null (without c++ runtime, Clang)
       run: |
         cat > example_single_file.cpp <<'EOF'
@@ -402,7 +437,7 @@ jobs:
   MacOS:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install Dependencies
       run: |
@@ -422,6 +457,17 @@ jobs:
         EOF
         clang++ -I. -std=c++11 -Wall -Wformat -o example_single_file example_single_file.cpp
 
+    - name: Build example_null (single file build, c++20)
+      run: |
+        cat > example_single_file.cpp <<'EOF'
+
+        #define IMGUI_IMPLEMENTATION
+        #include "misc/single_file/imgui_single_file.h"
+        #include "examples/example_null/main.cpp"
+
+        EOF
+        clang++ -I. -std=c++20 -Wall -Wformat -o example_single_file example_single_file.cpp
+
     - name: Build example_null (without c++ runtime)
       run: |
         cat > example_single_file.cpp <<'EOF'
@@ -462,7 +508,7 @@ jobs:
   iOS:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Build example_apple_metal
       run: |
@@ -470,9 +516,9 @@ jobs:
         xcodebuild -project examples/example_apple_metal/example_apple_metal.xcodeproj -target example_apple_metal_ios CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO
 
   Emscripten:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install Dependencies
       run: |
@@ -481,6 +527,7 @@ jobs:
         emsdk-master/emsdk update
         emsdk-master/emsdk install latest
         emsdk-master/emsdk activate latest
+        sudo apt-get install build-essential
 
     - name: Build example_sdl2_opengl3 with Emscripten
       run: |
@@ -489,17 +536,30 @@ jobs:
         popd
         make -C examples/example_sdl2_opengl3 -f Makefile.emscripten
 
-    - name: Build example_emscripten_wgpu
+    # This build compiles example_glfw_wgpu using Makefile.emscripten and Emscripten GLFW built-in implementation (-sUSE_GLFW=3)
+    # This ensures 2 things: the make build works, and the GLFW built-in implementation is tested
+    - name: Build example_glfw_wgpu with Emscripten/Makefile
       run: |
         pushd emsdk-master
         source ./emsdk_env.sh
         popd
-        make -C examples/example_emscripten_wgpu
+        make -C examples/example_glfw_wgpu -f Makefile.emscripten
+
+    # This build compiles example_glfw_wgpu using CMakeLists.txt and Emscripten GLFW contrib port (--use-port=contrib.glfw3)
+    # This ensures 2 things: the CMake build works, and the GLFW contrib port is tested
+    - name: Build example_glfw_wgpu with Emscripten/CMake
+      run: |
+        pushd emsdk-master
+        source ./emsdk_env.sh
+        popd
+        emcc -v
+        emcmake cmake -B build -DCMAKE_BUILD_TYPE=Release examples/example_glfw_wgpu
+        cmake --build build
 
   Android:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Build example_android_opengl3
       run: |

external/imgui/imgui/.github/workflows/manual.yml

@@ -0,0 +1,12 @@
+#
+# This is a dummy workflow used to trigger full builds manually.
+#
+name: manual
+
+on: workflow_dispatch
+
+jobs:
+  manual:
+    runs-on: ubuntu-latest
+    steps:
+      - run: exit 0

external/imgui/imgui/.github/workflows/static-analysis.yml

@@ -12,7 +12,7 @@ jobs:
   PVS-Studio:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 1
 
@@ -42,5 +42,5 @@ jobs:
           fi
           cd examples/example_null
           pvs-studio-analyzer trace -- make WITH_EXTRA_WARNINGS=1
-          pvs-studio-analyzer analyze -e ../../imstb_rectpack.h -e ../../imstb_textedit.h -e ../../imstb_truetype.h -l ../../pvs-studio.lic -o pvs-studio.log
+          pvs-studio-analyzer analyze --disableLicenseExpirationCheck -e ../../imstb_rectpack.h -e ../../imstb_textedit.h -e ../../imstb_truetype.h -l ../../pvs-studio.lic -o pvs-studio.log
           plog-converter -a 'GA:1,2;OP:1' -d V1071 -t errorfile -w pvs-studio.log

external/imgui/imgui/.gitignore

@@ -3,6 +3,7 @@
 
 ## Dear ImGui artifacts
 imgui.ini
+imgui*.ini
 
 ## General build artifacts
 *.o
@@ -40,8 +41,9 @@ examples/*.o.tmp
 examples/*.out.js
 examples/*.out.wasm
 examples/example_glfw_opengl3/web/*
+examples/example_glfw_wgpu/web/*
+examples/example_glfw_wgpu/external/*
 examples/example_sdl2_opengl3/web/*
-examples/example_emscripten_wgpu/web/*
 
 ## JetBrains IDE artifacts
 .idea

external/imgui/imgui/backends/imgui_impl_allegro5.cpp

@@ -20,6 +20,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
 //  2022-11-30: Renderer: Restoring using al_draw_indexed_prim() when Allegro version is >= 5.2.5.
 //  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
 //  2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
@@ -27,7 +30,7 @@
 //  2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
 //  2022-01-17: Inputs: always calling io.AddKeyModsEvent() next and before key event (not in NewFrame) to fix input queue with very low framerates.
 //  2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.
-//  2021-12-08: Renderer: Fixed mishandling of the the ImDrawCmd::IdxOffset field! This is an old bug but it never had an effect until some internal rendering changes in 1.86.
+//  2021-12-08: Renderer: Fixed mishandling of the ImDrawCmd::IdxOffset field! This is an old bug but it never had an effect until some internal rendering changes in 1.86.
 //  2021-08-17: Calling io.AddFocusEvent() on ALLEGRO_EVENT_DISPLAY_SWITCH_OUT/ALLEGRO_EVENT_DISPLAY_SWITCH_IN events.
 //  2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
 //  2021-05-19: Renderer: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
@@ -62,8 +65,8 @@
 #ifdef _WIN32
 #include <allegro5/allegro_windows.h>
 #endif
-#define ALLEGRO_HAS_CLIPBOARD           (ALLEGRO_VERSION_INT >= ((5 << 24) | (1 << 16) | (12 << 8))) // Clipboard only supported from Allegro 5.1.12
-#define ALLEGRO_HAS_DRAW_INDEXED_PRIM   (ALLEGRO_VERSION_INT >= ((5 << 24) | (2 << 16) | ( 5 << 8))) // DX9 implementation of al_draw_indexed_prim() got fixed in Allegro 5.2.5
+#define ALLEGRO_HAS_CLIPBOARD           ((ALLEGRO_VERSION_INT & ~ALLEGRO_UNSTABLE_BIT) >= ((5 << 24) | (1 << 16) | (12 << 8))) // Clipboard only supported from Allegro 5.1.12
+#define ALLEGRO_HAS_DRAW_INDEXED_PRIM   ((ALLEGRO_VERSION_INT & ~ALLEGRO_UNSTABLE_BIT) >= ((5 << 24) | (2 << 16) | ( 5 << 8))) // DX9 implementation of al_draw_indexed_prim() got fixed in Allegro 5.2.5
 
 // Visual Studio warnings
 #ifdef _MSC_VER
@@ -291,7 +294,7 @@ void ImGui_ImplAllegro5_InvalidateDeviceObjects()
 }
 
 #if ALLEGRO_HAS_CLIPBOARD
-static const char* ImGui_ImplAllegro5_GetClipboardText(void*)
+static const char* ImGui_ImplAllegro5_GetClipboardText(ImGuiContext*)
 {
     ImGui_ImplAllegro5_Data* bd = ImGui_ImplAllegro5_GetBackendData();
     if (bd->ClipboardTextData)
@@ -300,14 +303,15 @@ static const char* ImGui_ImplAllegro5_GetClipboardText(void*)
     return bd->ClipboardTextData;
 }
 
-static void ImGui_ImplAllegro5_SetClipboardText(void*, const char* text)
+static void ImGui_ImplAllegro5_SetClipboardText(ImGuiContext*, const char* text)
 {
     ImGui_ImplAllegro5_Data* bd = ImGui_ImplAllegro5_GetBackendData();
     al_set_clipboard_text(bd->Display, text);
 }
 #endif
 
-static ImGuiKey ImGui_ImplAllegro5_KeyCodeToImGuiKey(int key_code)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplAllegro5_KeyCodeToImGuiKey(int key_code)
 {
     switch (key_code)
     {
@@ -423,6 +427,7 @@ static ImGuiKey ImGui_ImplAllegro5_KeyCodeToImGuiKey(int key_code)
 bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
 
     // Setup backend capabilities flags
@@ -446,9 +451,9 @@ bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
     bd->VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro));
 
 #if ALLEGRO_HAS_CLIPBOARD
-    io.SetClipboardTextFn = ImGui_ImplAllegro5_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplAllegro5_GetClipboardText;
-    io.ClipboardUserData = nullptr;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Platform_SetClipboardTextFn = ImGui_ImplAllegro5_SetClipboardText;
+    platform_io.Platform_GetClipboardTextFn = ImGui_ImplAllegro5_GetClipboardText;
 #endif
 
     return true;
@@ -490,8 +495,9 @@ static void ImGui_ImplAllegro5_UpdateKeyModifiers()
 // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
 bool ImGui_ImplAllegro5_ProcessEvent(ALLEGRO_EVENT* ev)
 {
-    ImGuiIO& io = ImGui::GetIO();
     ImGui_ImplAllegro5_Data* bd = ImGui_ImplAllegro5_GetBackendData();
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplAllegro5_Init()?");
+    ImGuiIO& io = ImGui::GetIO();
 
     switch (ev->type)
     {
@@ -586,7 +592,7 @@ static void ImGui_ImplAllegro5_UpdateMouseCursor()
 void ImGui_ImplAllegro5_NewFrame()
 {
     ImGui_ImplAllegro5_Data* bd = ImGui_ImplAllegro5_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplAllegro5_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplAllegro5_Init()?");
 
     if (!bd->Texture)
         ImGui_ImplAllegro5_CreateDeviceObjects();

external/imgui/imgui/backends/imgui_impl_allegro5.h

@@ -25,6 +25,7 @@
 struct ALLEGRO_DISPLAY;
 union ALLEGRO_EVENT;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display);
 IMGUI_IMPL_API void     ImGui_ImplAllegro5_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplAllegro5_NewFrame();

external/imgui/imgui/backends/imgui_impl_android.cpp

@@ -263,6 +263,8 @@ int32_t ImGui_ImplAndroid_HandleInputEvent(const AInputEvent* input_event)
 
 bool ImGui_ImplAndroid_Init(ANativeWindow* window)
 {
+    IMGUI_CHECKVERSION();
+
     g_Window = window;
     g_Time = 0.0;
 

external/imgui/imgui/backends/imgui_impl_android.h

@@ -28,6 +28,7 @@
 struct ANativeWindow;
 struct AInputEvent;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplAndroid_Init(ANativeWindow* window);
 IMGUI_IMPL_API int32_t  ImGui_ImplAndroid_HandleInputEvent(const AInputEvent* input_event);
 IMGUI_IMPL_API void     ImGui_ImplAndroid_Shutdown();

external/imgui/imgui/backends/imgui_impl_dx10.cpp

@@ -534,6 +534,7 @@ void    ImGui_ImplDX10_InvalidateDeviceObjects()
 bool    ImGui_ImplDX10_Init(ID3D10Device* device)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
     // Setup backend capabilities flags
@@ -578,7 +579,7 @@ void ImGui_ImplDX10_Shutdown()
 void ImGui_ImplDX10_NewFrame()
 {
     ImGui_ImplDX10_Data* bd = ImGui_ImplDX10_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplDX10_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplDX10_Init()?");
 
     if (!bd->pFontSampler)
         ImGui_ImplDX10_CreateDeviceObjects();

external/imgui/imgui/backends/imgui_impl_dx10.h

@@ -19,6 +19,7 @@
 
 struct ID3D10Device;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplDX10_Init(ID3D10Device* device);
 IMGUI_IMPL_API void     ImGui_ImplDX10_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplDX10_NewFrame();

external/imgui/imgui/backends/imgui_impl_dx11.cpp

@@ -546,6 +546,7 @@ void    ImGui_ImplDX11_InvalidateDeviceObjects()
 bool    ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
     // Setup backend capabilities flags
@@ -594,7 +595,7 @@ void ImGui_ImplDX11_Shutdown()
 void ImGui_ImplDX11_NewFrame()
 {
     ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplDX11_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplDX11_Init()?");
 
     if (!bd->pFontSampler)
         ImGui_ImplDX11_CreateDeviceObjects();

external/imgui/imgui/backends/imgui_impl_dx11.h

@@ -20,6 +20,7 @@
 struct ID3D11Device;
 struct ID3D11DeviceContext;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context);
 IMGUI_IMPL_API void     ImGui_ImplDX11_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplDX11_NewFrame();

external/imgui/imgui/backends/imgui_impl_dx12.cpp

@@ -702,6 +702,7 @@ bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FO
                          D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
     // Setup backend capabilities flags
@@ -750,7 +751,7 @@ void ImGui_ImplDX12_Shutdown()
 void ImGui_ImplDX12_NewFrame()
 {
     ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplDX12_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplDX12_Init()?");
 
     if (!bd->pPipelineState)
         ImGui_ImplDX12_CreateDeviceObjects();

external/imgui/imgui/backends/imgui_impl_dx12.h

@@ -27,6 +27,8 @@ struct ID3D12GraphicsCommandList;
 struct D3D12_CPU_DESCRIPTOR_HANDLE;
 struct D3D12_GPU_DESCRIPTOR_HANDLE;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+
 // cmd_list is the command list that the implementation will use to render imgui draw lists.
 // Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate
 // render target and descriptor heap that contains font_srv_cpu_desc_handle/font_srv_gpu_desc_handle.

external/imgui/imgui/backends/imgui_impl_dx9.cpp

@@ -15,6 +15,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-02-12: DirectX9: Using RGBA format when supported by the driver to avoid CPU side conversion. (#6575)
 //  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
 //  2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
 //  2021-06-25: DirectX9: Explicitly disable texture state stages after >= 1.
@@ -284,6 +285,7 @@ void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
 bool ImGui_ImplDX9_Init(IDirect3DDevice9* device)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
     // Setup backend capabilities flags
@@ -312,6 +314,24 @@ void ImGui_ImplDX9_Shutdown()
     IM_DELETE(bd);
 }
 
+static bool ImGui_ImplDX9_CheckFormatSupport(IDirect3DDevice9* pDevice, D3DFORMAT format)
+{
+    IDirect3D9* pd3d = nullptr;
+    if (pDevice->GetDirect3D(&pd3d) != D3D_OK)
+        return false;
+    D3DDEVICE_CREATION_PARAMETERS param = {};
+    D3DDISPLAYMODE mode = {};
+    if (pDevice->GetCreationParameters(&param) != D3D_OK || pDevice->GetDisplayMode(0, &mode) != D3D_OK)
+    {
+        pd3d->Release();
+        return false;
+    }
+    // Font texture should support linear filter, color blend and write to render-target
+    bool support = (pd3d->CheckDeviceFormat(param.AdapterOrdinal, param.DeviceType, mode.Format, D3DUSAGE_DYNAMIC | D3DUSAGE_QUERY_FILTER | D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, D3DRTYPE_TEXTURE, format)) == D3D_OK;
+    pd3d->Release();
+    return support;
+}
+
 static bool ImGui_ImplDX9_CreateFontsTexture()
 {
     // Build texture atlas
@@ -323,18 +343,21 @@ static bool ImGui_ImplDX9_CreateFontsTexture()
 
     // Convert RGBA32 to BGRA32 (because RGBA32 is not well supported by DX9 devices)
 #ifndef IMGUI_USE_BGRA_PACKED_COLOR
-    if (io.Fonts->TexPixelsUseColors)
+    const bool rgba_support = ImGui_ImplDX9_CheckFormatSupport(bd->pd3dDevice, D3DFMT_A8B8G8R8);
+    if (!rgba_support && io.Fonts->TexPixelsUseColors)
     {
         ImU32* dst_start = (ImU32*)ImGui::MemAlloc((size_t)width * height * bytes_per_pixel);
         for (ImU32* src = (ImU32*)pixels, *dst = dst_start, *dst_end = dst_start + (size_t)width * height; dst < dst_end; src++, dst++)
             *dst = IMGUI_COL_TO_DX9_ARGB(*src);
         pixels = (unsigned char*)dst_start;
     }
+#else
+    const bool rgba_support = false;
 #endif
 
     // Upload texture to graphics system
     bd->FontTexture = nullptr;
-    if (bd->pd3dDevice->CreateTexture(width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &bd->FontTexture, nullptr) < 0)
+    if (bd->pd3dDevice->CreateTexture(width, height, 1, D3DUSAGE_DYNAMIC, rgba_support ? D3DFMT_A8B8G8R8 : D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &bd->FontTexture, nullptr) < 0)
         return false;
     D3DLOCKED_RECT tex_locked_rect;
     if (bd->FontTexture->LockRect(0, &tex_locked_rect, nullptr, 0) != D3D_OK)
@@ -347,7 +370,7 @@ static bool ImGui_ImplDX9_CreateFontsTexture()
     io.Fonts->SetTexID((ImTextureID)bd->FontTexture);
 
 #ifndef IMGUI_USE_BGRA_PACKED_COLOR
-    if (io.Fonts->TexPixelsUseColors)
+    if (!rgba_support && io.Fonts->TexPixelsUseColors)
         ImGui::MemFree(pixels);
 #endif
 
@@ -377,7 +400,7 @@ void ImGui_ImplDX9_InvalidateDeviceObjects()
 void ImGui_ImplDX9_NewFrame()
 {
     ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplDX9_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplDX9_Init()?");
 
     if (!bd->FontTexture)
         ImGui_ImplDX9_CreateDeviceObjects();

external/imgui/imgui/backends/imgui_impl_dx9.h

@@ -19,6 +19,7 @@
 
 struct IDirect3DDevice9;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplDX9_Init(IDirect3DDevice9* device);
 IMGUI_IMPL_API void     ImGui_ImplDX9_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplDX9_NewFrame();

external/imgui/imgui/backends/imgui_impl_glfw.cpp

@@ -18,8 +18,21 @@
 // - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
 // - Introduction, links and more at the top of imgui.cpp
 
+// About Emscripten support:
+// - Emscripten provides its own GLFW (3.2.1) implementation (syntax: "-sUSE_GLFW=3"), but Joystick is broken and several features are not supported (multiple windows, clipboard, timer, etc.)
+// - A third-party Emscripten GLFW (3.4.0) implementation (syntax: "--use-port=contrib.glfw3") fixes the Joystick issue and implements all relevant features for the browser.
+// See https://github.com/pongasoft/emscripten-glfw/blob/master/docs/Comparison.md for details.
+
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
+//               - io.PlatformOpenInShellFn -> platform_io.Platform_OpenInShellFn
+//  2024-07-31: Added ImGui_ImplGlfw_Sleep() helper function for usage by our examples app, since GLFW doesn't provide one.
+//  2024-07-08: *BREAKING* Renamed ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback to ImGui_ImplGlfw_InstallEmscriptenCallbacks(), added GLFWWindow* parameter.
+//  2024-07-08: Emscripten: Added support for GLFW3 contrib port (GLFW 3.4.0 features + bug fixes): to enable, replace -sUSE_GLFW=3 with --use-port=contrib.glfw3 (requires emscripten 3.1.59+) (https://github.com/pongasoft/emscripten-glfw)
+//  2024-07-02: Emscripten: Added io.PlatformOpenInShellFn() handler for Emscripten versions.
 //  2023-12-19: Emscripten: Added ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback() to register canvas selector and auto-resize GLFW window.
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys.
 //  2023-07-18: Inputs: Revert ignoring mouse data on GLFW_CURSOR_DISABLED as it can be used differently. User may set ImGuiConfigFLags_NoMouse if desired. (#5625, #6609)
@@ -85,17 +98,29 @@
 
 #ifdef _WIN32
 #undef APIENTRY
+#ifndef GLFW_EXPOSE_NATIVE_WIN32
 #define GLFW_EXPOSE_NATIVE_WIN32
+#endif
 #include <GLFW/glfw3native.h>   // for glfwGetWin32Window()
 #endif
 #ifdef __APPLE__
+#ifndef GLFW_EXPOSE_NATIVE_COCOA
 #define GLFW_EXPOSE_NATIVE_COCOA
+#endif
 #include <GLFW/glfw3native.h>   // for glfwGetCocoaWindow()
 #endif
+#ifndef _WIN32
+#include <unistd.h>             // for usleep()
+#endif
 
 #ifdef __EMSCRIPTEN__
 #include <emscripten.h>
 #include <emscripten/html5.h>
+#ifdef EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3
+#include <GLFW/emscripten_glfw3.h>
+#else
+#define EMSCRIPTEN_USE_EMBEDDED_GLFW3
+#endif
 #endif
 
 // We gather version tests as define in order to easily see which features are version-dependent.
@@ -114,7 +139,7 @@ enum GlfwClientApi
 {
     GlfwClientApi_Unknown,
     GlfwClientApi_OpenGL,
-    GlfwClientApi_Vulkan
+    GlfwClientApi_Vulkan,
 };
 
 struct ImGui_ImplGlfw_Data
@@ -127,7 +152,7 @@ struct ImGui_ImplGlfw_Data
     ImVec2                  LastValidMousePos;
     bool                    InstalledCallbacks;
     bool                    CallbacksChainForAllWindows;
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
     const char*             CanvasSelector;
 #endif
 
@@ -141,7 +166,7 @@ struct ImGui_ImplGlfw_Data
     GLFWcharfun             PrevUserCallbackChar;
     GLFWmonitorfun          PrevUserCallbackMonitor;
 #ifdef _WIN32
-    WNDPROC                 GlfwWndProc;
+    WNDPROC                 PrevWndProc;
 #endif
 
     ImGui_ImplGlfw_Data()   { memset((void*)this, 0, sizeof(*this)); }
@@ -160,19 +185,12 @@ static ImGui_ImplGlfw_Data* ImGui_ImplGlfw_GetBackendData()
 }
 
 // Functions
-static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data)
-{
-    return glfwGetClipboardString((GLFWwindow*)user_data);
-}
 
-static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int keycode, int scancode)
 {
-    glfwSetClipboardString((GLFWwindow*)user_data, text);
-}
-
-static ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int key)
-{
-    switch (key)
+    IM_UNUSED(scancode);
+    switch (keycode)
     {
         case GLFW_KEY_TAB: return ImGuiKey_Tab;
         case GLFW_KEY_LEFT: return ImGuiKey_LeftArrow;
@@ -331,7 +349,7 @@ void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yo
     if (bd->PrevUserCallbackScroll != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window))
         bd->PrevUserCallbackScroll(window, xoffset, yoffset);
 
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
     // Ignore GLFW events: will be processed in ImGui_ImplEmscripten_WheelCallback().
     return;
 #endif
@@ -340,9 +358,10 @@ void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yo
     io.AddMouseWheelEvent((float)xoffset, (float)yoffset);
 }
 
+// FIXME: should this be baked into ImGui_ImplGlfw_KeyToImGuiKey()? then what about the values passed to io.SetKeyEventNativeData()?
 static int ImGui_ImplGlfw_TranslateUntranslatedKey(int key, int scancode)
 {
-#if GLFW_HAS_GETKEYNAME && !defined(__EMSCRIPTEN__)
+#if GLFW_HAS_GETKEYNAME && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3)
     // GLFW 3.1+ attempts to "untranslate" keys, which goes the opposite of what every other framework does, making using lettered shortcuts difficult.
     // (It had reasons to do so: namely GLFW is/was more likely to be used for WASD-type game controls rather than lettered shortcuts, but IHMO the 3.1 change could have been done differently)
     // See https://github.com/glfw/glfw/issues/1502 for details.
@@ -353,7 +372,7 @@ static int ImGui_ImplGlfw_TranslateUntranslatedKey(int key, int scancode)
     GLFWerrorfun prev_error_callback = glfwSetErrorCallback(nullptr);
     const char* key_name = glfwGetKeyName(key, scancode);
     glfwSetErrorCallback(prev_error_callback);
-#if GLFW_HAS_GETERROR && !defined(__EMSCRIPTEN__) // Eat errors (see #5908)
+#if GLFW_HAS_GETERROR && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3) // Eat errors (see #5908)
     (void)glfwGetError(nullptr);
 #endif
     if (key_name && key_name[0] != 0 && key_name[1] == 0)
@@ -387,7 +406,7 @@ void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int keycode, int scancode, i
     keycode = ImGui_ImplGlfw_TranslateUntranslatedKey(keycode, scancode);
 
     ImGuiIO& io = ImGui::GetIO();
-    ImGuiKey imgui_key = ImGui_ImplGlfw_KeyToImGuiKey(keycode);
+    ImGuiKey imgui_key = ImGui_ImplGlfw_KeyToImGuiKey(keycode, scancode);
     io.AddKeyEvent(imgui_key, (action == GLFW_PRESS));
     io.SetKeyEventNativeData(imgui_key, keycode, scancode); // To support legacy indexing (<1.87 user code)
 }
@@ -450,7 +469,7 @@ void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor*, int)
 	// Unused in 'master' branch but 'docking' branch will use this, so we declare it ahead of it so if you have to install callbacks you can install this one too.
 }
 
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
 static EM_BOOL ImGui_ImplEmscripten_WheelCallback(int, const EmscriptenWheelEvent* ev, void*)
 {
     // Mimic Emscripten_HandleWheel() in SDL.
@@ -493,7 +512,7 @@ static LRESULT CALLBACK ImGui_ImplGlfw_WndProc(HWND hWnd, UINT msg, WPARAM wPara
         ImGui::GetIO().AddMouseSourceEvent(GetMouseSourceFromMessageExtraInfo());
         break;
     }
-    return ::CallWindowProcW(bd->GlfwWndProc, hWnd, msg, wParam, lParam);
+    return ::CallWindowProcW(bd->PrevWndProc, hWnd, msg, wParam, lParam);
 }
 #endif
 
@@ -549,9 +568,18 @@ void ImGui_ImplGlfw_SetCallbacksChainForAllWindows(bool chain_for_all_windows)
     bd->CallbacksChainForAllWindows = chain_for_all_windows;
 }
 
+#ifdef __EMSCRIPTEN__
+#if EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 >= 34020240817
+void ImGui_ImplGlfw_EmscriptenOpenURL(const char* url) { if (url) emscripten::glfw3::OpenURL(url); }
+#else
+EM_JS(void, ImGui_ImplGlfw_EmscriptenOpenURL, (const char* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); });
+#endif
+#endif
+
 static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
     //printf("GLFW_VERSION: %d.%d.%d (%d)", GLFW_VERSION_MAJOR, GLFW_VERSION_MINOR, GLFW_VERSION_REVISION, GLFW_VERSION_COMBINED);
 
@@ -565,9 +593,12 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     bd->Window = window;
     bd->Time = 0.0;
 
-    io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
-    io.ClipboardUserData = bd->Window;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Platform_SetClipboardTextFn = [](ImGuiContext*, const char* text) { glfwSetClipboardString(NULL, text); };
+    platform_io.Platform_GetClipboardTextFn = [](ImGuiContext*) { return glfwGetClipboardString(NULL); };
+#ifdef __EMSCRIPTEN__
+    platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplGlfw_EmscriptenOpenURL(url); return true; };
+#endif
 
     // Create mouse cursors
     // (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist,
@@ -598,15 +629,10 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
     if (install_callbacks)
         ImGui_ImplGlfw_InstallCallbacks(window);
-    // Register Emscripten Wheel callback to workaround issue in Emscripten GLFW Emulation (#6096)
-    // We intentionally do not check 'if (install_callbacks)' here, as some users may set it to false and call GLFW callback themselves.
-    // FIXME: May break chaining in case user registered their own Emscripten callback?
-#ifdef __EMSCRIPTEN__
-    emscripten_set_wheel_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, nullptr, false, ImGui_ImplEmscripten_WheelCallback);
-#endif
 
     // Set platform dependent data in viewport
     ImGuiViewport* main_viewport = ImGui::GetMainViewport();
+    main_viewport->PlatformHandle = (void*)bd->Window;
 #ifdef _WIN32
     main_viewport->PlatformHandleRaw = glfwGetWin32Window(bd->Window);
 #elif defined(__APPLE__)
@@ -617,11 +643,28 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
 
     // Windows: register a WndProc hook so we can intercept some messages.
 #ifdef _WIN32
-    bd->GlfwWndProc = (WNDPROC)::GetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC);
-    IM_ASSERT(bd->GlfwWndProc != nullptr);
+    bd->PrevWndProc = (WNDPROC)::GetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC);
+    IM_ASSERT(bd->PrevWndProc != nullptr);
     ::SetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)ImGui_ImplGlfw_WndProc);
 #endif
 
+    // Emscripten: the same application can run on various platforms, so we detect the Apple platform at runtime
+    // to override io.ConfigMacOSXBehaviors from its default (which is always false in Emscripten).
+#ifdef __EMSCRIPTEN__
+#if EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 >= 34020240817
+    if (emscripten::glfw3::IsRuntimePlatformApple())
+    {
+        ImGui::GetIO().ConfigMacOSXBehaviors = true;
+
+        // Due to how the browser (poorly) handles the Meta Key, this line essentially disables repeats when used.
+        // This means that Meta + V only registers a single key-press, even if the keys are held.
+        // This is a compromise for dealing with this issue in ImGui since ImGui implements key repeat itself.
+        // See https://github.com/pongasoft/emscripten-glfw/blob/v3.4.0.20240817/docs/Usage.md#the-problem-of-the-super-key
+        emscripten::glfw3::SetSuperPlusKeyTimeouts(10, 10);
+    }
+#endif
+#endif
+
     bd->ClientApi = client_api;
     return true;
 }
@@ -649,18 +692,19 @@ void ImGui_ImplGlfw_Shutdown()
 
     if (bd->InstalledCallbacks)
         ImGui_ImplGlfw_RestoreCallbacks(bd->Window);
-#ifdef __EMSCRIPTEN__
-    emscripten_set_wheel_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, nullptr, false, nullptr);
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
+    if (bd->CanvasSelector)
+        emscripten_set_wheel_callback(bd->CanvasSelector, nullptr, false, nullptr);
 #endif
 
     for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
         glfwDestroyCursor(bd->MouseCursors[cursor_n]);
 
-    // Windows: register a WndProc hook so we can intercept some messages.
+    // Windows: restore our WndProc hook
 #ifdef _WIN32
     ImGuiViewport* main_viewport = ImGui::GetMainViewport();
-    ::SetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)bd->GlfwWndProc);
-    bd->GlfwWndProc = nullptr;
+    ::SetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)bd->PrevWndProc);
+    bd->PrevWndProc = nullptr;
 #endif
 
     io.BackendPlatformName = nullptr;
@@ -674,12 +718,10 @@ static void ImGui_ImplGlfw_UpdateMouseData()
     ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
     ImGuiIO& io = ImGui::GetIO();
 
-
     // (those braces are here to reduce diff with multi-viewports support in 'docking' branch)
     {
         GLFWwindow* window = bd->Window;
-
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
         const bool is_window_focused = true;
 #else
         const bool is_window_focused = glfwGetWindowAttrib(window, GLFW_FOCUSED) != 0;
@@ -737,7 +779,7 @@ static void ImGui_ImplGlfw_UpdateGamepads()
         return;
 
     io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
-#if GLFW_HAS_GAMEPAD_API && !defined(__EMSCRIPTEN__)
+#if GLFW_HAS_GAMEPAD_API && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3)
     GLFWgamepadstate gamepad;
     if (!glfwGetGamepadState(GLFW_JOYSTICK_1, &gamepad))
         return;
@@ -785,7 +827,7 @@ void ImGui_ImplGlfw_NewFrame()
 {
     ImGuiIO& io = ImGui::GetIO();
     ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplGlfw_InitForXXX()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplGlfw_InitForXXX()?");
 
     // Setup display size (every frame to accommodate for window resizing)
     int w, h;
@@ -811,7 +853,17 @@ void ImGui_ImplGlfw_NewFrame()
     ImGui_ImplGlfw_UpdateGamepads();
 }
 
-#ifdef __EMSCRIPTEN__
+// GLFW doesn't provide a portable sleep function
+void ImGui_ImplGlfw_Sleep(int milliseconds)
+{
+#ifdef _WIN32
+    ::Sleep(milliseconds);
+#else
+    usleep(milliseconds * 1000);
+#endif
+}
+
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
 static EM_BOOL ImGui_ImplGlfw_OnCanvasSizeChange(int event_type, const EmscriptenUiEvent* event, void* user_data)
 {
     ImGui_ImplGlfw_Data* bd = (ImGui_ImplGlfw_Data*)user_data;
@@ -832,11 +884,11 @@ static EM_BOOL ImGui_ImplEmscripten_FullscreenChangeCallback(int event_type, con
 
 // 'canvas_selector' is a CSS selector. The event listener is applied to the first element that matches the query.
 // STRING MUST PERSIST FOR THE APPLICATION DURATION. PLEASE USE A STRING LITERAL OR ENSURE POINTER WILL STAY VALID.
-void ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_selector)
+void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow*, const char* canvas_selector)
 {
     IM_ASSERT(canvas_selector != nullptr);
     ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplGlfw_InitForXXX()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplGlfw_InitForXXX()?");
 
     bd->CanvasSelector = canvas_selector;
     emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, bd, false, ImGui_ImplGlfw_OnCanvasSizeChange);
@@ -844,8 +896,24 @@ void ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_sel
 
     // Change the size of the GLFW window according to the size of the canvas
     ImGui_ImplGlfw_OnCanvasSizeChange(EMSCRIPTEN_EVENT_RESIZE, {}, bd);
+
+    // Register Emscripten Wheel callback to workaround issue in Emscripten GLFW Emulation (#6096)
+    // We intentionally do not check 'if (install_callbacks)' here, as some users may set it to false and call GLFW callback themselves.
+    // FIXME: May break chaining in case user registered their own Emscripten callback?
+    emscripten_set_wheel_callback(bd->CanvasSelector, nullptr, false, ImGui_ImplEmscripten_WheelCallback);
 }
-#endif
+#elif defined(EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3)
+// When using --use-port=contrib.glfw3 for the GLFW implementation, you can override the behavior of this call
+// by invoking emscripten_glfw_make_canvas_resizable afterward.
+// See https://github.com/pongasoft/emscripten-glfw/blob/master/docs/Usage.md#how-to-make-the-canvas-resizable-by-the-user for an explanation
+void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow* window, const char* canvas_selector)
+{
+  GLFWwindow* w = (GLFWwindow*)(EM_ASM_INT({ return Module.glfwGetWindow(UTF8ToString($0)); }, canvas_selector));
+  IM_ASSERT(window == w); // Sanity check
+  IM_UNUSED(w);
+  emscripten_glfw_make_canvas_resizable(window, "window", nullptr);
+}
+#endif // #ifdef EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3
 
 //-----------------------------------------------------------------------------
 

external/imgui/imgui/backends/imgui_impl_glfw.h

@@ -24,15 +24,17 @@
 struct GLFWwindow;
 struct GLFWmonitor;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks);
 IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks);
 IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks);
 IMGUI_IMPL_API void     ImGui_ImplGlfw_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplGlfw_NewFrame();
 
-// Emscripten related initialization phase methods
+// Emscripten related initialization phase methods (call after ImGui_ImplGlfw_InitForOpenGL)
 #ifdef __EMSCRIPTEN__
-IMGUI_IMPL_API void     ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_selector);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow* window, const char* canvas_selector);
+//static inline void    ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_selector) { ImGui_ImplGlfw_InstallEmscriptenCallbacks(nullptr, canvas_selector); } } // Renamed in 1.91.0
 #endif
 
 // GLFW callbacks install
@@ -55,4 +57,7 @@ IMGUI_IMPL_API void     ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key,
 IMGUI_IMPL_API void     ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);
 IMGUI_IMPL_API void     ImGui_ImplGlfw_MonitorCallback(GLFWmonitor* monitor, int event);
 
+// GLFW helpers
+IMGUI_IMPL_API void     ImGui_ImplGlfw_Sleep(int milliseconds);
+
 #endif // #ifndef IMGUI_DISABLE

external/imgui/imgui/backends/imgui_impl_glut.cpp

@@ -167,6 +167,7 @@ static ImGuiKey ImGui_ImplGLUT_KeyToImGuiKey(int key)
 bool ImGui_ImplGLUT_Init()
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
 
 #ifdef FREEGLUT
     io.BackendPlatformName = "imgui_impl_glut (freeglut)";

external/imgui/imgui/backends/imgui_impl_glut.h

@@ -26,6 +26,7 @@
 #ifndef IMGUI_DISABLE
 #include "imgui.h"      // IMGUI_IMPL_API
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplGLUT_Init();
 IMGUI_IMPL_API void     ImGui_ImplGLUT_InstallFuncs();
 IMGUI_IMPL_API void     ImGui_ImplGLUT_Shutdown();

external/imgui/imgui/backends/imgui_impl_metal.h

@@ -25,6 +25,7 @@
 @class MTLRenderPassDescriptor;
 @protocol MTLDevice, MTLCommandBuffer, MTLRenderCommandEncoder;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool ImGui_ImplMetal_Init(id<MTLDevice> device);
 IMGUI_IMPL_API void ImGui_ImplMetal_Shutdown();
 IMGUI_IMPL_API void ImGui_ImplMetal_NewFrame(MTLRenderPassDescriptor* renderPassDescriptor);
@@ -51,6 +52,7 @@ IMGUI_IMPL_API void ImGui_ImplMetal_DestroyDeviceObjects();
 #include <Metal/Metal.hpp>
 #ifndef __OBJC__
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool ImGui_ImplMetal_Init(MTL::Device* device);
 IMGUI_IMPL_API void ImGui_ImplMetal_Shutdown();
 IMGUI_IMPL_API void ImGui_ImplMetal_NewFrame(MTL::RenderPassDescriptor* renderPassDescriptor);

external/imgui/imgui/backends/imgui_impl_metal.mm

@@ -79,7 +79,6 @@ struct ImGui_ImplMetal_Data
     ImGui_ImplMetal_Data()      { memset(this, 0, sizeof(*this)); }
 };
 
-static ImGui_ImplMetal_Data*    ImGui_ImplMetal_CreateBackendData() { return IM_NEW(ImGui_ImplMetal_Data)(); }
 static ImGui_ImplMetal_Data*    ImGui_ImplMetal_GetBackendData()    { return ImGui::GetCurrentContext() ? (ImGui_ImplMetal_Data*)ImGui::GetIO().BackendRendererUserData : nullptr; }
 static void                     ImGui_ImplMetal_DestroyBackendData(){ IM_DELETE(ImGui_ImplMetal_GetBackendData()); }
 
@@ -125,8 +124,11 @@ bool ImGui_ImplMetal_CreateDeviceObjects(MTL::Device* device)
 
 bool ImGui_ImplMetal_Init(id<MTLDevice> device)
 {
-    ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_CreateBackendData();
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
+
+    ImGui_ImplMetal_Data* bd = IM_NEW(ImGui_ImplMetal_Data)();
     io.BackendRendererUserData = (void*)bd;
     io.BackendRendererName = "imgui_impl_metal";
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
@@ -153,7 +155,7 @@ void ImGui_ImplMetal_Shutdown()
 void ImGui_ImplMetal_NewFrame(MTLRenderPassDescriptor* renderPassDescriptor)
 {
     ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData();
-    IM_ASSERT(bd->SharedMetalContext != nil && "No Metal context. Did you call ImGui_ImplMetal_Init() ?");
+    IM_ASSERT(bd != nil && "Context or backend not initialized! Did you call ImGui_ImplMetal_Init()?");
     bd->SharedMetalContext.framebufferDescriptor = [[FramebufferDescriptor alloc] initWithRenderPassDescriptor:renderPassDescriptor];
 
     if (bd->SharedMetalContext.depthStencilState == nil)

external/imgui/imgui/backends/imgui_impl_opengl2.cpp

@@ -22,8 +22,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-06-28: OpenGL: ImGui_ImplOpenGL2_NewFrame() recreates font texture if it has been destroyed by ImGui_ImplOpenGL2_DestroyFontsTexture(). (#7748)
 //  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
-//  2021-12-08: OpenGL: Fixed mishandling of the the ImDrawCmd::IdxOffset field! This is an old bug but it never had an effect until some internal rendering changes in 1.86.
+//  2021-12-08: OpenGL: Fixed mishandling of the ImDrawCmd::IdxOffset field! This is an old bug but it never had an effect until some internal rendering changes in 1.86.
 //  2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
 //  2021-05-19: OpenGL: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
 //  2021-01-03: OpenGL: Backup, setup and restore GL_SHADE_MODEL state, disable GL_STENCIL_TEST and disable GL_NORMAL_ARRAY client state to increase compatibility with legacy OpenGL applications.
@@ -83,6 +84,7 @@ static ImGui_ImplOpenGL2_Data* ImGui_ImplOpenGL2_GetBackendData()
 bool    ImGui_ImplOpenGL2_Init()
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
     // Setup backend capabilities flags
@@ -108,10 +110,12 @@ void    ImGui_ImplOpenGL2_Shutdown()
 void    ImGui_ImplOpenGL2_NewFrame()
 {
     ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplOpenGL2_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplOpenGL2_Init()?");
 
     if (!bd->FontTexture)
         ImGui_ImplOpenGL2_CreateDeviceObjects();
+    if (!bd->FontTexture)
+        ImGui_ImplOpenGL2_CreateFontsTexture();
 }
 
 static void ImGui_ImplOpenGL2_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height)

external/imgui/imgui/backends/imgui_impl_opengl2.h

@@ -24,6 +24,7 @@
 #include "imgui.h"      // IMGUI_IMPL_API
 #ifndef IMGUI_DISABLE
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplOpenGL2_Init();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL2_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL2_NewFrame();

external/imgui/imgui/backends/imgui_impl_opengl3.cpp

@@ -22,6 +22,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-06-28: OpenGL: ImGui_ImplOpenGL3_NewFrame() recreates font texture if it has been destroyed by ImGui_ImplOpenGL3_DestroyFontsTexture(). (#7748)
+//  2024-05-07: OpenGL: Update loader for Linux to support EGL/GLVND. (#7562)
+//  2024-04-16: OpenGL: Detect ES3 contexts on desktop based on version string, to e.g. avoid calling glPolygonMode() on them. (#7447)
 //  2024-01-09: OpenGL: Update GL3W based imgui_impl_opengl3_loader.h to load "libGL.so" and variants, fixing regression on distros missing a symlink.
 //  2023-11-08: OpenGL: Update GL3W based imgui_impl_opengl3_loader.h to load "libGL.so" instead of "libGL.so.1", accommodating for NetBSD systems having only "libGL.so.3" available. (#6983)
 //  2023-10-05: OpenGL: Rename symbols in our internal loader so that LTO compilation with another copy of gl3w is possible. (#6875, #6668, #4445)
@@ -121,6 +124,7 @@
 // Clang/GCC warnings with -Weverything
 #if defined(__clang__)
 #pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunknown-warning-option" // warning: ignore unknown flags
 #pragma clang diagnostic ignored "-Wold-style-cast"         // warning: use of old-style cast
 #pragma clang diagnostic ignored "-Wsign-conversion"        // warning: implicit conversion changes signedness
 #pragma clang diagnostic ignored "-Wunused-macros"          // warning: macro is not used
@@ -176,9 +180,21 @@
 #define GL_VERTEX_ARRAY_BINDING GL_VERTEX_ARRAY_BINDING_OES
 #endif
 
-// Desktop GL 2.0+ has glPolygonMode() which GL ES and WebGL don't have.
-#ifdef GL_POLYGON_MODE
-#define IMGUI_IMPL_HAS_POLYGON_MODE
+// Desktop GL 2.0+ has extension and glPolygonMode() which GL ES and WebGL don't have..
+// A desktop ES context can technically compile fine with our loader, so we also perform a runtime checks
+#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
+#define IMGUI_IMPL_OPENGL_HAS_EXTENSIONS        // has glGetIntegerv(GL_NUM_EXTENSIONS)
+#define IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE // may have glPolygonMode()
+#endif
+
+// Desktop GL 2.1+ and GL ES 3.0+ have glBindBuffer() with GL_PIXEL_UNPACK_BUFFER target.
+#if !defined(IMGUI_IMPL_OPENGL_ES2)
+#define IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_BUFFER_PIXEL_UNPACK
+#endif
+
+// Desktop GL 3.1+ has GL_PRIMITIVE_RESTART state
+#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_1)
+#define IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
 #endif
 
 // Desktop GL 3.2+ has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
@@ -191,16 +207,6 @@
 #define IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
 #endif
 
-// Desktop GL 3.1+ has GL_PRIMITIVE_RESTART state
-#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_1)
-#define IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
-#endif
-
-// Desktop GL use extension detection
-#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
-#define IMGUI_IMPL_OPENGL_MAY_HAVE_EXTENSIONS
-#endif
-
 // [Debugging]
 //#define IMGUI_IMPL_OPENGL_DEBUG
 #ifdef IMGUI_IMPL_OPENGL_DEBUG
@@ -229,6 +235,7 @@ struct ImGui_ImplOpenGL3_Data
     unsigned int    VboHandle, ElementsHandle;
     GLsizeiptr      VertexBufferSize;
     GLsizeiptr      IndexBufferSize;
+    bool            HasPolygonMode;
     bool            HasClipOrigin;
     bool            UseBufferSubData;
 
@@ -270,6 +277,7 @@ struct ImGui_ImplOpenGL3_VtxAttribState
 bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
     // Initialize our loader
@@ -293,16 +301,13 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
     bd->GlProfileIsES2 = true;
 #else
     // Desktop or GLES 3
+    const char* gl_version_str = (const char*)glGetString(GL_VERSION);
     GLint major = 0;
     GLint minor = 0;
     glGetIntegerv(GL_MAJOR_VERSION, &major);
     glGetIntegerv(GL_MINOR_VERSION, &minor);
     if (major == 0 && minor == 0)
-    {
-        // Query GL_VERSION in desktop GL 2.x, the string will start with "<major>.<minor>"
-        const char* gl_version = (const char*)glGetString(GL_VERSION);
-        sscanf(gl_version, "%d.%d", &major, &minor);
-    }
+        sscanf(gl_version_str, "%d.%d", &major, &minor); // Query GL_VERSION in desktop GL 2.x, the string will start with "<major>.<minor>"
     bd->GlVersion = (GLuint)(major * 100 + minor * 10);
 #if defined(GL_CONTEXT_PROFILE_MASK)
     if (bd->GlVersion >= 320)
@@ -312,6 +317,9 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
 
 #if defined(IMGUI_IMPL_OPENGL_ES3)
     bd->GlProfileIsES3 = true;
+#else
+    if (strncmp(gl_version_str, "OpenGL ES 3", 11) == 0)
+        bd->GlProfileIsES3 = true;
 #endif
 
     bd->UseBufferSubData = false;
@@ -326,7 +334,7 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
 #endif
 
 #ifdef IMGUI_IMPL_OPENGL_DEBUG
-    printf("GlVersion = %d\nGlProfileIsCompat = %d\nGlProfileMask = 0x%X\nGlProfileIsES2 = %d, GlProfileIsES3 = %d\nGL_VENDOR = '%s'\nGL_RENDERER = '%s'\n", bd->GlVersion, bd->GlProfileIsCompat, bd->GlProfileMask, bd->GlProfileIsES2, bd->GlProfileIsES3, (const char*)glGetString(GL_VENDOR), (const char*)glGetString(GL_RENDERER)); // [DEBUG]
+    printf("GlVersion = %d, \"%s\"\nGlProfileIsCompat = %d\nGlProfileMask = 0x%X\nGlProfileIsES2 = %d, GlProfileIsES3 = %d\nGL_VENDOR = '%s'\nGL_RENDERER = '%s'\n", bd->GlVersion, gl_version_str, bd->GlProfileIsCompat, bd->GlProfileMask, bd->GlProfileIsES2, bd->GlProfileIsES3, (const char*)glGetString(GL_VENDOR), (const char*)glGetString(GL_RENDERER)); // [DEBUG]
 #endif
 
 #ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
@@ -358,8 +366,11 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
     glGetIntegerv(GL_TEXTURE_BINDING_2D, &current_texture);
 
     // Detect extensions we support
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE
+    bd->HasPolygonMode = (!bd->GlProfileIsES2 && !bd->GlProfileIsES3);
+#endif
     bd->HasClipOrigin = (bd->GlVersion >= 450);
-#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_EXTENSIONS
+#ifdef IMGUI_IMPL_OPENGL_HAS_EXTENSIONS
     GLint num_extensions = 0;
     glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
     for (GLint i = 0; i < num_extensions; i++)
@@ -389,10 +400,12 @@ void    ImGui_ImplOpenGL3_Shutdown()
 void    ImGui_ImplOpenGL3_NewFrame()
 {
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplOpenGL3_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplOpenGL3_Init()?");
 
     if (!bd->ShaderHandle)
         ImGui_ImplOpenGL3_CreateDeviceObjects();
+    if (!bd->FontTexture)
+        ImGui_ImplOpenGL3_CreateFontsTexture();
 }
 
 static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)
@@ -411,8 +424,9 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_wid
     if (bd->GlVersion >= 310)
         glDisable(GL_PRIMITIVE_RESTART);
 #endif
-#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
-    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE
+    if (bd->HasPolygonMode)
+        glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 #endif
 
     // Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT)
@@ -500,8 +514,8 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
 #ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
     GLuint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, (GLint*)&last_vertex_array_object);
 #endif
-#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
-    GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE
+    GLint last_polygon_mode[2]; if (bd->HasPolygonMode) { glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode); }
 #endif
     GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
     GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
@@ -639,18 +653,10 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
     if (bd->GlVersion >= 310) { if (last_enable_primitive_restart) glEnable(GL_PRIMITIVE_RESTART); else glDisable(GL_PRIMITIVE_RESTART); }
 #endif
 
-#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE
     // Desktop OpenGL 3.0 and OpenGL 3.1 had separate polygon draw modes for front-facing and back-facing faces of polygons
-    if (bd->GlVersion <= 310 || bd->GlProfileIsCompat)
-    {
-        glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]);
-        glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]);
-    }
-    else
-    {
-        glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
-    }
-#endif // IMGUI_IMPL_HAS_POLYGON_MODE
+    if (bd->HasPolygonMode) { if (bd->GlVersion <= 310 || bd->GlProfileIsCompat) { glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]); glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]); } else { glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]); } }
+#endif // IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE
 
     glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
     glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
@@ -747,6 +753,10 @@ bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
     GLint last_texture, last_array_buffer;
     glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
     glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_BUFFER_PIXEL_UNPACK
+    GLint last_pixel_unpack_buffer = 0;
+    if (bd->GlVersion >= 210) { glGetIntegerv(GL_PIXEL_UNPACK_BUFFER_BINDING, &last_pixel_unpack_buffer); glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0); }
+#endif
 #ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
     GLint last_vertex_array;
     glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
@@ -920,6 +930,9 @@ bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
     // Restore modified GL state
     glBindTexture(GL_TEXTURE_2D, last_texture);
     glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_BUFFER_PIXEL_UNPACK
+    if (bd->GlVersion >= 210) { glBindBuffer(GL_PIXEL_UNPACK_BUFFER, last_pixel_unpack_buffer); }
+#endif
 #ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
     glBindVertexArray(last_vertex_array);
 #endif

external/imgui/imgui/backends/imgui_impl_opengl3.h

@@ -29,7 +29,7 @@
 #include "imgui.h"      // IMGUI_IMPL_API
 #ifndef IMGUI_DISABLE
 
-// Backend API
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_Init(const char* glsl_version = nullptr);
 IMGUI_IMPL_API void     ImGui_ImplOpenGL3_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL3_NewFrame();
@@ -41,9 +41,9 @@ IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyFontsTexture();
 IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_CreateDeviceObjects();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyDeviceObjects();
 
-// Specific OpenGL ES versions
-//#define IMGUI_IMPL_OPENGL_ES2     // Auto-detected on Emscripten
-//#define IMGUI_IMPL_OPENGL_ES3     // Auto-detected on iOS/Android
+// Configuration flags to add in your imconfig file:
+//#define IMGUI_IMPL_OPENGL_ES2     // Enable ES 2 (Auto-detected on Emscripten)
+//#define IMGUI_IMPL_OPENGL_ES3     // Enable ES 3 (Auto-detected on iOS/Android)
 
 // You can explicitly select GLES2 or GLES3 API by using one of the '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
 #if !defined(IMGUI_IMPL_OPENGL_ES2) \

external/imgui/imgui/backends/imgui_impl_opengl3_loader.h

@@ -10,7 +10,7 @@
 // THE REST OF YOUR APP SHOULD USE A DIFFERENT GL LOADER: ANY GL LOADER OF YOUR CHOICE.
 //
 // IF YOU GET BUILD ERRORS IN THIS FILE (commonly macro redefinitions or function redefinitions):
-// IT LIKELY MEANS THAT YOU ARE BUILDING 'imgui_impl_opengl3.cpp' OR INCUDING 'imgui_impl_opengl3_loader.h'
+// IT LIKELY MEANS THAT YOU ARE BUILDING 'imgui_impl_opengl3.cpp' OR INCLUDING 'imgui_impl_opengl3_loader.h'
 // IN THE SAME COMPILATION UNIT AS ONE OF YOUR FILE WHICH IS USING A THIRD-PARTY OPENGL LOADER.
 // (e.g. COULD HAPPEN IF YOU ARE DOING A UNITY/JUMBO BUILD, OR INCLUDING .CPP FILES FROM OTHERS)
 // YOU SHOULD NOT BUILD BOTH IN THE SAME COMPILATION UNIT.
@@ -18,7 +18,7 @@
 // WILL NOT BE USING OUR LOADER, AND INSTEAD EXPECT ANOTHER/YOUR LOADER TO BE AVAILABLE IN THE COMPILATION UNIT.
 //
 // Regenerate with:
-//   python gl3w_gen.py --output ../imgui/backends/imgui_impl_opengl3_loader.h --ref ../imgui/backends/imgui_impl_opengl3.cpp ./extra_symbols.txt
+//   python3 gl3w_gen.py --output ../imgui/backends/imgui_impl_opengl3_loader.h --ref ../imgui/backends/imgui_impl_opengl3.cpp ./extra_symbols.txt
 //
 // More info:
 //   https://github.com/dearimgui/gl3w_stripped
@@ -118,7 +118,7 @@ extern "C" {
 ** included as <GL/glcorearb.h>.
 **
 ** glcorearb.h includes only APIs in the latest OpenGL core profile
-** implementation together with APIs in newer ARB extensions which
+** implementation together with APIs in newer ARB extensions which 
 ** can be supported by the core profile. It does not, and never will
 ** include functionality removed from the core profile, such as
 ** fixed-function vertex and fragment processing.
@@ -346,6 +346,10 @@ GLAPI void APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean
 GLAPI void APIENTRY glVertexAttribPointer (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
 #endif
 #endif /* GL_VERSION_2_0 */
+#ifndef GL_VERSION_2_1
+#define GL_PIXEL_UNPACK_BUFFER            0x88EC
+#define GL_PIXEL_UNPACK_BUFFER_BINDING    0x88EF
+#endif /* GL_VERSION_2_1 */
 #ifndef GL_VERSION_3_0
 typedef khronos_uint16_t GLhalf;
 #define GL_MAJOR_VERSION                  0x821B
@@ -661,31 +665,123 @@ static GL3WglProc get_proc(const char *proc)
 #else
 #include <dlfcn.h>
 
-static void *libgl;
-static GL3WglProc (*glx_get_proc_address)(const GLubyte *);
+static void* libgl;  // OpenGL library
+static void* libglx;  // GLX library
+static void* libegl;  // EGL library
+static GL3WGetProcAddressProc gl_get_proc_address;
 
-static int open_libgl(void)
+static void close_libgl(void)
 {
+    if (libgl) {
+        dlclose(libgl);
+        libgl = NULL;
+    }
+    if (libegl) {
+        dlclose(libegl);
+        libegl = NULL;
+    }
+    if (libglx) {
+        dlclose(libglx);
+        libglx = NULL;
+    }
+}
+
+static int is_library_loaded(const char* name, void** lib)
+{
+    *lib = dlopen(name, RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
+    return *lib != NULL;
+}
+
+static int open_libs(void)
+{
+    // On Linux we have two APIs to get process addresses: EGL and GLX.
+    // EGL is supported under both X11 and Wayland, whereas GLX is X11-specific.
+
+    libgl = NULL;
+    libegl = NULL;
+    libglx = NULL;
+
+    // First check what's already loaded, the windowing library might have
+    // already loaded either EGL or GLX and we want to use the same one.
+
+    if (is_library_loaded("libEGL.so.1", &libegl) ||
+        is_library_loaded("libGLX.so.0", &libglx)) {
+        libgl = dlopen("libOpenGL.so.0", RTLD_LAZY | RTLD_LOCAL);
+        if (libgl)
+            return GL3W_OK;
+        else
+            close_libgl();
+    }
+
+    if (is_library_loaded("libGL.so", &libgl))
+        return GL3W_OK;
+    if (is_library_loaded("libGL.so.1", &libgl))
+        return GL3W_OK;
+    if (is_library_loaded("libGL.so.3", &libgl))
+        return GL3W_OK;
+
+    // Neither is already loaded, so we have to load one.  Try EGL first
+    // because it is supported under both X11 and Wayland.
+
+    // Load OpenGL + EGL
+    libgl = dlopen("libOpenGL.so.0", RTLD_LAZY | RTLD_LOCAL);
+    libegl = dlopen("libEGL.so.1", RTLD_LAZY | RTLD_LOCAL);
+    if (libgl && libegl)
+        return GL3W_OK;
+    else
+        close_libgl();
+
+    // Fall back to legacy libGL, which includes GLX
     // While most systems use libGL.so.1, NetBSD seems to use that libGL.so.3. See https://github.com/ocornut/imgui/issues/6983
     libgl = dlopen("libGL.so", RTLD_LAZY | RTLD_LOCAL);
     if (!libgl)
         libgl = dlopen("libGL.so.1", RTLD_LAZY | RTLD_LOCAL);
     if (!libgl)
         libgl = dlopen("libGL.so.3", RTLD_LAZY | RTLD_LOCAL);
-    if (!libgl)
+
+    if (libgl)
+        return GL3W_OK;
+
+    return GL3W_ERROR_LIBRARY_OPEN;
+}
+
+static int open_libgl(void)
+{
+    int res = open_libs();
+    if (res)
+        return res;
+
+    if (libegl)
+        *(void**)(&gl_get_proc_address) = dlsym(libegl, "eglGetProcAddress");
+    else if (libglx)
+        *(void**)(&gl_get_proc_address) = dlsym(libglx, "glXGetProcAddressARB");
+    else
+        *(void**)(&gl_get_proc_address) = dlsym(libgl, "glXGetProcAddressARB");
+
+    if (!gl_get_proc_address) {
+        close_libgl();
         return GL3W_ERROR_LIBRARY_OPEN;
-    *(void **)(&glx_get_proc_address) = dlsym(libgl, "glXGetProcAddressARB");
+    }
+
     return GL3W_OK;
 }
 
-static void close_libgl(void) { dlclose(libgl); }
-
-static GL3WglProc get_proc(const char *proc)
+static GL3WglProc get_proc(const char* proc)
 {
-    GL3WglProc res;
-    res = glx_get_proc_address((const GLubyte *)proc);
+    GL3WglProc res = NULL;
+
+    // Before EGL version 1.5, eglGetProcAddress doesn't support querying core
+    // functions and may return a dummy function if we try, so try to load the
+    // function from the GL library directly first.
+    if (libegl)
+        *(void**)(&res) = dlsym(libgl, proc);
+
     if (!res)
-        *(void **)(&res) = dlsym(libgl, proc);
+        res = gl_get_proc_address(proc);
+
+    if (!libegl && !res)
+        *(void**)(&res) = dlsym(libgl, proc);
+
     return res;
 }
 #endif

external/imgui/imgui/backends/imgui_impl_osx.h

@@ -27,6 +27,7 @@
 @class NSEvent;
 @class NSView;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplOSX_Init(NSView* _Nonnull view);
 IMGUI_IMPL_API void     ImGui_ImplOSX_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOSX_NewFrame(NSView* _Nullable view);
@@ -41,6 +42,7 @@ IMGUI_IMPL_API void     ImGui_ImplOSX_NewFrame(NSView* _Nullable view);
 // #include <AppKit/AppKit.hpp>
 #ifndef __OBJC__
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplOSX_Init(void* _Nonnull view);
 IMGUI_IMPL_API void     ImGui_ImplOSX_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOSX_NewFrame(void* _Nullable view);

external/imgui/imgui/backends/imgui_impl_osx.mm

@@ -29,6 +29,11 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
+//               - io.PlatformSetImeDataFn  -> platform_io.Platform_SetImeDataFn
+//  2024-07-02: Update for io.SetPlatformImeDataFn() -> io.PlatformSetImeDataFn() renaming in main library.
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F20 function keys. Stopped mapping F13 into PrintScreen.
 //  2023-04-09: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_Pen.
 //  2023-02-01: Fixed scroll wheel scaling for devices emitting events with hasPreciseScrollingDeltas==false (e.g. non-Apple mices).
@@ -80,11 +85,11 @@ struct ImGui_ImplOSX_Data
     KeyEventResponder*          KeyEventResponder;
     NSTextInputContext*         InputContext;
     id                          Monitor;
+    NSWindow*                   Window;
 
     ImGui_ImplOSX_Data()        { memset(this, 0, sizeof(*this)); }
 };
 
-static ImGui_ImplOSX_Data*      ImGui_ImplOSX_CreateBackendData()   { return IM_NEW(ImGui_ImplOSX_Data)(); }
 static ImGui_ImplOSX_Data*      ImGui_ImplOSX_GetBackendData()      { return (ImGui_ImplOSX_Data*)ImGui::GetIO().BackendPlatformUserData; }
 static void                     ImGui_ImplOSX_DestroyBackendData()  { IM_DELETE(ImGui_ImplOSX_GetBackendData()); }
 
@@ -134,7 +139,7 @@ static bool ImGui_ImplOSX_HandleEvent(NSEvent* event, NSView* view);
 
 - (void)updateImePosWithView:(NSView *)view
 {
-    NSWindow *window = view.window;
+    NSWindow* window = view.window;
     if (!window)
         return;
     NSRect contentRect = [window contentRectForFrameRect:window.frame];
@@ -254,7 +259,9 @@ static bool ImGui_ImplOSX_HandleEvent(NSEvent* event, NSView* view);
 @end
 
 // Functions
-static ImGuiKey ImGui_ImplOSX_KeyCodeToImGuiKey(int key_code)
+
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplOSX_KeyCodeToImGuiKey(int key_code)
 {
     switch (key_code)
     {
@@ -392,15 +399,21 @@ IMGUI_IMPL_API void ImGui_ImplOSX_NewFrame(void* _Nullable view) {
 bool ImGui_ImplOSX_Init(NSView* view)
 {
     ImGuiIO& io = ImGui::GetIO();
-    ImGui_ImplOSX_Data* bd = ImGui_ImplOSX_CreateBackendData();
-    io.BackendPlatformUserData = (void*)bd;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
 
     // Setup backend capabilities flags
+    ImGui_ImplOSX_Data* bd = IM_NEW(ImGui_ImplOSX_Data)();
+    io.BackendPlatformUserData = (void*)bd;
+    io.BackendPlatformName = "imgui_impl_osx";
     io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;           // We can honor GetMouseCursor() values (optional)
     //io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
-    io.BackendPlatformName = "imgui_impl_osx";
 
     bd->Observer = [ImGuiObserver new];
+    bd->Window = view.window ?: NSApp.orderedWindows.firstObject;
+    ImGuiViewport* main_viewport = ImGui::GetMainViewport();
+    main_viewport->PlatformHandle = main_viewport->PlatformHandleRaw = (__bridge_retained void*)bd->Window;
 
     // Load cursors. Some of them are undocumented.
     bd->MouseCursorHidden = false;
@@ -417,14 +430,14 @@ bool ImGui_ImplOSX_Init(NSView* view)
     // Note that imgui.cpp also include default OSX clipboard handlers which can be enabled
     // by adding '#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS' in imconfig.h and adding '-framework ApplicationServices' to your linker command-line.
     // Since we are already in ObjC land here, it is easy for us to add a clipboard handler using the NSPasteboard api.
-    io.SetClipboardTextFn = [](void*, const char* str) -> void
+    platform_io.Platform_SetClipboardTextFn = [](ImGuiContext*, const char* str) -> void
     {
         NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
         [pasteboard declareTypes:[NSArray arrayWithObject:NSPasteboardTypeString] owner:nil];
         [pasteboard setString:[NSString stringWithUTF8String:str] forType:NSPasteboardTypeString];
     };
 
-    io.GetClipboardTextFn = [](void*) -> const char*
+    platform_io.Platform_GetClipboardTextFn = [](ImGuiContext*) -> const char*
     {
         NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
         NSString* available = [pasteboard availableTypeFromArray: [NSArray arrayWithObject:NSPasteboardTypeString]];
@@ -459,7 +472,7 @@ bool ImGui_ImplOSX_Init(NSView* view)
     [view addSubview:bd->KeyEventResponder];
     ImGui_ImplOSX_AddTrackingArea(view);
 
-    io.SetPlatformImeDataFn = [](ImGuiViewport* viewport, ImGuiPlatformImeData* data) -> void
+    platform_io.Platform_SetImeDataFn = [](ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data) -> void
     {
         ImGui_ImplOSX_Data* bd = ImGui_ImplOSX_GetBackendData();
         if (data->WantVisible)
@@ -534,7 +547,6 @@ static void ImGui_ImplOSX_UpdateMouseCursor()
 static void ImGui_ImplOSX_UpdateGamepads()
 {
     ImGuiIO& io = ImGui::GetIO();
-    memset(io.NavInputs, 0, sizeof(io.NavInputs));
     if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
         return;
 
@@ -601,6 +613,7 @@ static void ImGui_ImplOSX_UpdateImePosWithView(NSView* view)
 void ImGui_ImplOSX_NewFrame(NSView* view)
 {
     ImGui_ImplOSX_Data* bd = ImGui_ImplOSX_GetBackendData();
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplOSX_Init()?");
     ImGuiIO& io = ImGui::GetIO();
 
     // Setup display size

external/imgui/imgui/backends/imgui_impl_sdl2.cpp

@@ -21,6 +21,17 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-09-09: use SDL_Vulkan_GetDrawableSize() when available. (#7967, #3190)
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
+//               - io.PlatformOpenInShellFn -> platform_io.Platform_OpenInShellFn
+//               - io.PlatformSetImeDataFn  -> platform_io.Platform_SetImeDataFn
+//  2024-08-19: Storing SDL's Uint32 WindowID inside ImGuiViewport::PlatformHandle instead of SDL_Window*.
+//  2024-08-19: ImGui_ImplSDL2_ProcessEvent() now ignores events intended for other SDL windows. (#7853)
+//  2024-07-02: Emscripten: Added io.PlatformOpenInShellFn() handler for Emscripten versions.
+//  2024-07-02: Update for io.SetPlatformImeDataFn() -> io.PlatformSetImeDataFn() renaming in main library.
+//  2024-02-14: Inputs: Handle gamepad disconnection. Added ImGui_ImplSDL2_SetGamepadMode().
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys.
 //  2023-04-06: Inputs: Avoid calling SDL_StartTextInput()/SDL_StopTextInput() as they don't only pertain to IME. It's unclear exactly what their relation is to IME. (#6306)
 //  2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen. (#2702)
@@ -89,9 +100,12 @@
 // SDL
 #include <SDL.h>
 #include <SDL_syswm.h>
-#if defined(__APPLE__)
+#ifdef __APPLE__
 #include <TargetConditionals.h>
 #endif
+#ifdef __EMSCRIPTEN__
+#include <emscripten/em_js.h>
+#endif
 
 #if SDL_VERSION_ATLEAST(2,0,4) && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS) && !defined(__amigaos4__)
 #define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE    1
@@ -99,20 +113,31 @@
 #define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE    0
 #endif
 #define SDL_HAS_VULKAN                      SDL_VERSION_ATLEAST(2,0,6)
+#if SDL_HAS_VULKAN
+extern "C" { extern DECLSPEC void SDLCALL SDL_Vulkan_GetDrawableSize(SDL_Window* window, int* w, int* h); }
+#endif
 
 // SDL Data
 struct ImGui_ImplSDL2_Data
 {
-    SDL_Window*     Window;
-    SDL_Renderer*   Renderer;
-    Uint64          Time;
-    Uint32          MouseWindowID;
-    int             MouseButtonsDown;
-    SDL_Cursor*     MouseCursors[ImGuiMouseCursor_COUNT];
-    SDL_Cursor*     LastMouseCursor;
-    int             PendingMouseLeaveFrame;
-    char*           ClipboardTextData;
-    bool            MouseCanUseGlobalState;
+    SDL_Window*             Window;
+    Uint32                  WindowID;
+    SDL_Renderer*           Renderer;
+    Uint64                  Time;
+    char*                   ClipboardTextData;
+
+    // Mouse handling
+    Uint32                  MouseWindowID;
+    int                     MouseButtonsDown;
+    SDL_Cursor*             MouseCursors[ImGuiMouseCursor_COUNT];
+    SDL_Cursor*             MouseLastCursor;
+    int                     MouseLastLeaveFrame;
+    bool                    MouseCanUseGlobalState;
+
+    // Gamepad handling
+    ImVector<SDL_GameController*> Gamepads;
+    ImGui_ImplSDL2_GamepadMode    GamepadMode;
+    bool                          WantUpdateGamepadsList;
 
     ImGui_ImplSDL2_Data()   { memset((void*)this, 0, sizeof(*this)); }
 };
@@ -127,7 +152,7 @@ static ImGui_ImplSDL2_Data* ImGui_ImplSDL2_GetBackendData()
 }
 
 // Functions
-static const char* ImGui_ImplSDL2_GetClipboardText(void*)
+static const char* ImGui_ImplSDL2_GetClipboardText(ImGuiContext*)
 {
     ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
     if (bd->ClipboardTextData)
@@ -136,13 +161,13 @@ static const char* ImGui_ImplSDL2_GetClipboardText(void*)
     return bd->ClipboardTextData;
 }
 
-static void ImGui_ImplSDL2_SetClipboardText(void*, const char* text)
+static void ImGui_ImplSDL2_SetClipboardText(ImGuiContext*, const char* text)
 {
     SDL_SetClipboardText(text);
 }
 
 // Note: native IME will only display if user calls SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1") _before_ SDL_CreateWindow().
-static void ImGui_ImplSDL2_SetPlatformImeData(ImGuiViewport*, ImGuiPlatformImeData* data)
+static void ImGui_ImplSDL2_PlatformSetImeData(ImGuiContext*, ImGuiViewport*, ImGuiPlatformImeData* data)
 {
     if (data->WantVisible)
     {
@@ -155,8 +180,10 @@ static void ImGui_ImplSDL2_SetPlatformImeData(ImGuiViewport*, ImGuiPlatformImeDa
     }
 }
 
-static ImGuiKey ImGui_ImplSDL2_KeycodeToImGuiKey(int keycode)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplSDL2_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
 {
+    IM_UNUSED(scancode);
     switch (keycode)
     {
         case SDLK_TAB: return ImGuiKey_Tab;
@@ -278,6 +305,7 @@ static ImGuiKey ImGui_ImplSDL2_KeycodeToImGuiKey(int keycode)
         case SDLK_F24: return ImGuiKey_F24;
         case SDLK_AC_BACK: return ImGuiKey_AppBack;
         case SDLK_AC_FORWARD: return ImGuiKey_AppForward;
+        default: break;
     }
     return ImGuiKey_None;
 }
@@ -291,6 +319,12 @@ static void ImGui_ImplSDL2_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
     io.AddKeyEvent(ImGuiMod_Super, (sdl_key_mods & KMOD_GUI) != 0);
 }
 
+static ImGuiViewport* ImGui_ImplSDL2_GetViewportForWindowID(Uint32 window_id)
+{
+    ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
+    return (window_id == bd->WindowID) ? ImGui::GetMainViewport() : NULL;
+}
+
 // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
 // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
 // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
@@ -298,13 +332,16 @@ static void ImGui_ImplSDL2_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
 // If you have multiple SDL events and some of them are not meant to be used by dear imgui, you may need to filter events based on their windowID field.
 bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
 {
-    ImGuiIO& io = ImGui::GetIO();
     ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDL2_Init()?");
+    ImGuiIO& io = ImGui::GetIO();
 
     switch (event->type)
     {
         case SDL_MOUSEMOTION:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->motion.windowID) == NULL)
+                return false;
             ImVec2 mouse_pos((float)event->motion.x, (float)event->motion.y);
             io.AddMouseSourceEvent(event->motion.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);
             io.AddMousePosEvent(mouse_pos.x, mouse_pos.y);
@@ -312,6 +349,8 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
         }
         case SDL_MOUSEWHEEL:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->wheel.windowID) == NULL)
+                return false;
             //IMGUI_DEBUG_LOG("wheel %.2f %.2f, precise %.2f %.2f\n", (float)event->wheel.x, (float)event->wheel.y, event->wheel.preciseX, event->wheel.preciseY);
 #if SDL_VERSION_ATLEAST(2,0,18) // If this fails to compile on Emscripten: update to latest Emscripten!
             float wheel_x = -event->wheel.preciseX;
@@ -330,6 +369,8 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
         case SDL_MOUSEBUTTONDOWN:
         case SDL_MOUSEBUTTONUP:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->button.windowID) == NULL)
+                return false;
             int mouse_button = -1;
             if (event->button.button == SDL_BUTTON_LEFT) { mouse_button = 0; }
             if (event->button.button == SDL_BUTTON_RIGHT) { mouse_button = 1; }
@@ -345,20 +386,26 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
         }
         case SDL_TEXTINPUT:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->text.windowID) == NULL)
+                return false;
             io.AddInputCharactersUTF8(event->text.text);
             return true;
         }
         case SDL_KEYDOWN:
         case SDL_KEYUP:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->key.windowID) == NULL)
+                return false;
             ImGui_ImplSDL2_UpdateKeyModifiers((SDL_Keymod)event->key.keysym.mod);
-            ImGuiKey key = ImGui_ImplSDL2_KeycodeToImGuiKey(event->key.keysym.sym);
+            ImGuiKey key = ImGui_ImplSDL2_KeyEventToImGuiKey(event->key.keysym.sym, event->key.keysym.scancode);
             io.AddKeyEvent(key, (event->type == SDL_KEYDOWN));
             io.SetKeyEventNativeData(key, event->key.keysym.sym, event->key.keysym.scancode, event->key.keysym.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
             return true;
         }
         case SDL_WINDOWEVENT:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->window.windowID) == NULL)
+                return false;
             // - When capturing mouse, SDL will send a bunch of conflicting LEAVE/ENTER event on every mouse move, but the final ENTER tends to be right.
             // - However we won't get a correct LEAVE event for a captured window.
             // - In some cases, when detaching a window from main viewport SDL may send SDL_WINDOWEVENT_ENTER one frame too late,
@@ -368,23 +415,34 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
             if (window_event == SDL_WINDOWEVENT_ENTER)
             {
                 bd->MouseWindowID = event->window.windowID;
-                bd->PendingMouseLeaveFrame = 0;
+                bd->MouseLastLeaveFrame = 0;
             }
             if (window_event == SDL_WINDOWEVENT_LEAVE)
-                bd->PendingMouseLeaveFrame = ImGui::GetFrameCount() + 1;
+                bd->MouseLastLeaveFrame = ImGui::GetFrameCount() + 1;
             if (window_event == SDL_WINDOWEVENT_FOCUS_GAINED)
                 io.AddFocusEvent(true);
             else if (event->window.event == SDL_WINDOWEVENT_FOCUS_LOST)
                 io.AddFocusEvent(false);
             return true;
         }
+        case SDL_CONTROLLERDEVICEADDED:
+        case SDL_CONTROLLERDEVICEREMOVED:
+        {
+            bd->WantUpdateGamepadsList = true;
+            return true;
+        }
     }
     return false;
 }
 
-static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer)
+#ifdef __EMSCRIPTEN__
+EM_JS(void, ImGui_ImplSDL2_EmscriptenOpenURL, (char const* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); });
+#endif
+
+static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer, void* sdl_gl_context)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
 
     // Check and store if we are on a SDL backend that supports global mouse position
@@ -406,13 +464,22 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer)
     io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;        // We can honor io.WantSetMousePos requests (optional, rarely used)
 
     bd->Window = window;
+    bd->WindowID = SDL_GetWindowID(window);
     bd->Renderer = renderer;
     bd->MouseCanUseGlobalState = mouse_can_use_global_state;
 
-    io.SetClipboardTextFn = ImGui_ImplSDL2_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;
-    io.ClipboardUserData = nullptr;
-    io.SetPlatformImeDataFn = ImGui_ImplSDL2_SetPlatformImeData;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Platform_SetClipboardTextFn = ImGui_ImplSDL2_SetClipboardText;
+    platform_io.Platform_GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;
+    platform_io.Platform_ClipboardUserData = nullptr;
+    platform_io.Platform_SetImeDataFn = ImGui_ImplSDL2_PlatformSetImeData;
+#ifdef __EMSCRIPTEN__
+    platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplSDL2_EmscriptenOpenURL(url); return true; };
+#endif
+
+    // Gamepad handling
+    bd->GamepadMode = ImGui_ImplSDL2_GamepadMode_AutoFirst;
+    bd->WantUpdateGamepadsList = true;
 
     // Load mouse cursors
     bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
@@ -428,6 +495,7 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer)
     // Set platform dependent data in viewport
     // Our mouse update function expect PlatformHandle to be filled for the main viewport
     ImGuiViewport* main_viewport = ImGui::GetMainViewport();
+    main_viewport->PlatformHandle = (void*)(intptr_t)bd->WindowID;
     main_viewport->PlatformHandleRaw = nullptr;
     SDL_SysWMinfo info;
     SDL_VERSION(&info.version);
@@ -461,13 +529,13 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer)
     SDL_SetHint(SDL_HINT_MOUSE_AUTO_CAPTURE, "0");
 #endif
 
+    (void)sdl_gl_context; // Unused in 'master' branch.
     return true;
 }
 
 bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context)
 {
-    IM_UNUSED(sdl_gl_context); // Viewport branch will need this.
-    return ImGui_ImplSDL2_Init(window, nullptr);
+    return ImGui_ImplSDL2_Init(window, nullptr, sdl_gl_context);
 }
 
 bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window)
@@ -475,7 +543,7 @@ bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window)
 #if !SDL_HAS_VULKAN
     IM_ASSERT(0 && "Unsupported");
 #endif
-    return ImGui_ImplSDL2_Init(window, nullptr);
+    return ImGui_ImplSDL2_Init(window, nullptr, nullptr);
 }
 
 bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window)
@@ -483,24 +551,26 @@ bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window)
 #if !defined(_WIN32)
     IM_ASSERT(0 && "Unsupported");
 #endif
-    return ImGui_ImplSDL2_Init(window, nullptr);
+    return ImGui_ImplSDL2_Init(window, nullptr, nullptr);
 }
 
 bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window)
 {
-    return ImGui_ImplSDL2_Init(window, nullptr);
+    return ImGui_ImplSDL2_Init(window, nullptr, nullptr);
 }
 
 bool ImGui_ImplSDL2_InitForSDLRenderer(SDL_Window* window, SDL_Renderer* renderer)
 {
-    return ImGui_ImplSDL2_Init(window, renderer);
+    return ImGui_ImplSDL2_Init(window, renderer, nullptr);
 }
 
 bool ImGui_ImplSDL2_InitForOther(SDL_Window* window)
 {
-    return ImGui_ImplSDL2_Init(window, nullptr);
+    return ImGui_ImplSDL2_Init(window, nullptr, nullptr);
 }
 
+static void ImGui_ImplSDL2_CloseGamepads();
+
 void ImGui_ImplSDL2_Shutdown()
 {
     ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
@@ -511,7 +581,7 @@ void ImGui_ImplSDL2_Shutdown()
         SDL_free(bd->ClipboardTextData);
     for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
         SDL_FreeCursor(bd->MouseCursors[cursor_n]);
-    bd->LastMouseCursor = nullptr;
+    ImGui_ImplSDL2_CloseGamepads();
 
     io.BackendPlatformName = nullptr;
     io.BackendPlatformUserData = nullptr;
@@ -567,65 +637,124 @@ static void ImGui_ImplSDL2_UpdateMouseCursor()
     {
         // Show OS mouse cursor
         SDL_Cursor* expected_cursor = bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow];
-        if (bd->LastMouseCursor != expected_cursor)
+        if (bd->MouseLastCursor != expected_cursor)
         {
             SDL_SetCursor(expected_cursor); // SDL function doesn't have an early out (see #6113)
-            bd->LastMouseCursor = expected_cursor;
+            bd->MouseLastCursor = expected_cursor;
         }
         SDL_ShowCursor(SDL_TRUE);
     }
 }
 
+static void ImGui_ImplSDL2_CloseGamepads()
+{
+    ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
+    if (bd->GamepadMode != ImGui_ImplSDL2_GamepadMode_Manual)
+        for (SDL_GameController* gamepad : bd->Gamepads)
+            SDL_GameControllerClose(gamepad);
+    bd->Gamepads.resize(0);
+}
+
+void ImGui_ImplSDL2_SetGamepadMode(ImGui_ImplSDL2_GamepadMode mode, struct _SDL_GameController** manual_gamepads_array, int manual_gamepads_count)
+{
+    ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
+    ImGui_ImplSDL2_CloseGamepads();
+    if (mode == ImGui_ImplSDL2_GamepadMode_Manual)
+    {
+        IM_ASSERT(manual_gamepads_array != nullptr && manual_gamepads_count > 0);
+        for (int n = 0; n < manual_gamepads_count; n++)
+            bd->Gamepads.push_back(manual_gamepads_array[n]);
+    }
+    else
+    {
+        IM_ASSERT(manual_gamepads_array == nullptr && manual_gamepads_count <= 0);
+        bd->WantUpdateGamepadsList = true;
+    }
+    bd->GamepadMode = mode;
+}
+
+static void ImGui_ImplSDL2_UpdateGamepadButton(ImGui_ImplSDL2_Data* bd, ImGuiIO& io, ImGuiKey key, SDL_GameControllerButton button_no)
+{
+    bool merged_value = false;
+    for (SDL_GameController* gamepad : bd->Gamepads)
+        merged_value |= SDL_GameControllerGetButton(gamepad, button_no) != 0;
+    io.AddKeyEvent(key, merged_value);
+}
+
+static inline float Saturate(float v) { return v < 0.0f ? 0.0f : v  > 1.0f ? 1.0f : v; }
+static void ImGui_ImplSDL2_UpdateGamepadAnalog(ImGui_ImplSDL2_Data* bd, ImGuiIO& io, ImGuiKey key, SDL_GameControllerAxis axis_no, float v0, float v1)
+{
+    float merged_value = 0.0f;
+    for (SDL_GameController* gamepad : bd->Gamepads)
+    {
+        float vn = Saturate((float)(SDL_GameControllerGetAxis(gamepad, axis_no) - v0) / (float)(v1 - v0));
+        if (merged_value < vn)
+            merged_value = vn;
+    }
+    io.AddKeyAnalogEvent(key, merged_value > 0.1f, merged_value);
+}
+
 static void ImGui_ImplSDL2_UpdateGamepads()
 {
+    ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
     ImGuiIO& io = ImGui::GetIO();
-    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
-        return;
 
-    // Get gamepad
+    // Update list of controller(s) to use
+    if (bd->WantUpdateGamepadsList && bd->GamepadMode != ImGui_ImplSDL2_GamepadMode_Manual)
+    {
+        ImGui_ImplSDL2_CloseGamepads();
+        int joystick_count = SDL_NumJoysticks();
+        for (int n = 0; n < joystick_count; n++)
+            if (SDL_IsGameController(n))
+                if (SDL_GameController* gamepad = SDL_GameControllerOpen(n))
+                {
+                    bd->Gamepads.push_back(gamepad);
+                    if (bd->GamepadMode == ImGui_ImplSDL2_GamepadMode_AutoFirst)
+                        break;
+                }
+        bd->WantUpdateGamepadsList = false;
+    }
+
+    // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
+    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
+        return;
     io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
-    SDL_GameController* game_controller = SDL_GameControllerOpen(0);
-    if (!game_controller)
+    if (bd->Gamepads.Size == 0)
         return;
     io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
 
     // Update gamepad inputs
-    #define IM_SATURATE(V)                      (V < 0.0f ? 0.0f : V > 1.0f ? 1.0f : V)
-    #define MAP_BUTTON(KEY_NO, BUTTON_NO)       { io.AddKeyEvent(KEY_NO, SDL_GameControllerGetButton(game_controller, BUTTON_NO) != 0); }
-    #define MAP_ANALOG(KEY_NO, AXIS_NO, V0, V1) { float vn = (float)(SDL_GameControllerGetAxis(game_controller, AXIS_NO) - V0) / (float)(V1 - V0); vn = IM_SATURATE(vn); io.AddKeyAnalogEvent(KEY_NO, vn > 0.1f, vn); }
-    const int thumb_dead_zone = 8000;           // SDL_gamecontroller.h suggests using this value.
-    MAP_BUTTON(ImGuiKey_GamepadStart,           SDL_CONTROLLER_BUTTON_START);
-    MAP_BUTTON(ImGuiKey_GamepadBack,            SDL_CONTROLLER_BUTTON_BACK);
-    MAP_BUTTON(ImGuiKey_GamepadFaceLeft,        SDL_CONTROLLER_BUTTON_X);              // Xbox X, PS Square
-    MAP_BUTTON(ImGuiKey_GamepadFaceRight,       SDL_CONTROLLER_BUTTON_B);              // Xbox B, PS Circle
-    MAP_BUTTON(ImGuiKey_GamepadFaceUp,          SDL_CONTROLLER_BUTTON_Y);              // Xbox Y, PS Triangle
-    MAP_BUTTON(ImGuiKey_GamepadFaceDown,        SDL_CONTROLLER_BUTTON_A);              // Xbox A, PS Cross
-    MAP_BUTTON(ImGuiKey_GamepadDpadLeft,        SDL_CONTROLLER_BUTTON_DPAD_LEFT);
-    MAP_BUTTON(ImGuiKey_GamepadDpadRight,       SDL_CONTROLLER_BUTTON_DPAD_RIGHT);
-    MAP_BUTTON(ImGuiKey_GamepadDpadUp,          SDL_CONTROLLER_BUTTON_DPAD_UP);
-    MAP_BUTTON(ImGuiKey_GamepadDpadDown,        SDL_CONTROLLER_BUTTON_DPAD_DOWN);
-    MAP_BUTTON(ImGuiKey_GamepadL1,              SDL_CONTROLLER_BUTTON_LEFTSHOULDER);
-    MAP_BUTTON(ImGuiKey_GamepadR1,              SDL_CONTROLLER_BUTTON_RIGHTSHOULDER);
-    MAP_ANALOG(ImGuiKey_GamepadL2,              SDL_CONTROLLER_AXIS_TRIGGERLEFT,  0.0f, 32767);
-    MAP_ANALOG(ImGuiKey_GamepadR2,              SDL_CONTROLLER_AXIS_TRIGGERRIGHT, 0.0f, 32767);
-    MAP_BUTTON(ImGuiKey_GamepadL3,              SDL_CONTROLLER_BUTTON_LEFTSTICK);
-    MAP_BUTTON(ImGuiKey_GamepadR3,              SDL_CONTROLLER_BUTTON_RIGHTSTICK);
-    MAP_ANALOG(ImGuiKey_GamepadLStickLeft,      SDL_CONTROLLER_AXIS_LEFTX,  -thumb_dead_zone, -32768);
-    MAP_ANALOG(ImGuiKey_GamepadLStickRight,     SDL_CONTROLLER_AXIS_LEFTX,  +thumb_dead_zone, +32767);
-    MAP_ANALOG(ImGuiKey_GamepadLStickUp,        SDL_CONTROLLER_AXIS_LEFTY,  -thumb_dead_zone, -32768);
-    MAP_ANALOG(ImGuiKey_GamepadLStickDown,      SDL_CONTROLLER_AXIS_LEFTY,  +thumb_dead_zone, +32767);
-    MAP_ANALOG(ImGuiKey_GamepadRStickLeft,      SDL_CONTROLLER_AXIS_RIGHTX, -thumb_dead_zone, -32768);
-    MAP_ANALOG(ImGuiKey_GamepadRStickRight,     SDL_CONTROLLER_AXIS_RIGHTX, +thumb_dead_zone, +32767);
-    MAP_ANALOG(ImGuiKey_GamepadRStickUp,        SDL_CONTROLLER_AXIS_RIGHTY, -thumb_dead_zone, -32768);
-    MAP_ANALOG(ImGuiKey_GamepadRStickDown,      SDL_CONTROLLER_AXIS_RIGHTY, +thumb_dead_zone, +32767);
-    #undef MAP_BUTTON
-    #undef MAP_ANALOG
+    const int thumb_dead_zone = 8000; // SDL_gamecontroller.h suggests using this value.
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadStart,       SDL_CONTROLLER_BUTTON_START);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadBack,        SDL_CONTROLLER_BUTTON_BACK);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceLeft,    SDL_CONTROLLER_BUTTON_X);              // Xbox X, PS Square
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceRight,   SDL_CONTROLLER_BUTTON_B);              // Xbox B, PS Circle
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceUp,      SDL_CONTROLLER_BUTTON_Y);              // Xbox Y, PS Triangle
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceDown,    SDL_CONTROLLER_BUTTON_A);              // Xbox A, PS Cross
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadLeft,    SDL_CONTROLLER_BUTTON_DPAD_LEFT);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadRight,   SDL_CONTROLLER_BUTTON_DPAD_RIGHT);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadUp,      SDL_CONTROLLER_BUTTON_DPAD_UP);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadDown,    SDL_CONTROLLER_BUTTON_DPAD_DOWN);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadL1,          SDL_CONTROLLER_BUTTON_LEFTSHOULDER);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadR1,          SDL_CONTROLLER_BUTTON_RIGHTSHOULDER);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadL2,          SDL_CONTROLLER_AXIS_TRIGGERLEFT,  0.0f, 32767);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadR2,          SDL_CONTROLLER_AXIS_TRIGGERRIGHT, 0.0f, 32767);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadL3,          SDL_CONTROLLER_BUTTON_LEFTSTICK);
+    ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadR3,          SDL_CONTROLLER_BUTTON_RIGHTSTICK);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickLeft,  SDL_CONTROLLER_AXIS_LEFTX,  -thumb_dead_zone, -32768);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickRight, SDL_CONTROLLER_AXIS_LEFTX,  +thumb_dead_zone, +32767);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickUp,    SDL_CONTROLLER_AXIS_LEFTY,  -thumb_dead_zone, -32768);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickDown,  SDL_CONTROLLER_AXIS_LEFTY,  +thumb_dead_zone, +32767);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickLeft,  SDL_CONTROLLER_AXIS_RIGHTX, -thumb_dead_zone, -32768);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickRight, SDL_CONTROLLER_AXIS_RIGHTX, +thumb_dead_zone, +32767);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickUp,    SDL_CONTROLLER_AXIS_RIGHTY, -thumb_dead_zone, -32768);
+    ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickDown,  SDL_CONTROLLER_AXIS_RIGHTY, +thumb_dead_zone, +32767);
 }
 
 void ImGui_ImplSDL2_NewFrame()
 {
     ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplSDL2_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDL2_Init()?");
     ImGuiIO& io = ImGui::GetIO();
 
     // Setup display size (every frame to accommodate for window resizing)
@@ -636,6 +765,10 @@ void ImGui_ImplSDL2_NewFrame()
         w = h = 0;
     if (bd->Renderer != nullptr)
         SDL_GetRendererOutputSize(bd->Renderer, &display_w, &display_h);
+#if SDL_HAS_VULKAN
+    else if (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_VULKAN)
+        SDL_Vulkan_GetDrawableSize(bd->Window, &display_w, &display_h);
+#endif
     else
         SDL_GL_GetDrawableSize(bd->Window, &display_w, &display_h);
     io.DisplaySize = ImVec2((float)w, (float)h);
@@ -651,10 +784,10 @@ void ImGui_ImplSDL2_NewFrame()
     io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
     bd->Time = current_time;
 
-    if (bd->PendingMouseLeaveFrame && bd->PendingMouseLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
+    if (bd->MouseLastLeaveFrame && bd->MouseLastLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
     {
         bd->MouseWindowID = 0;
-        bd->PendingMouseLeaveFrame = 0;
+        bd->MouseLastLeaveFrame = 0;
         io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
     }
 

external/imgui/imgui/backends/imgui_impl_sdl2.h

@@ -24,8 +24,10 @@
 
 struct SDL_Window;
 struct SDL_Renderer;
+struct _SDL_GameController;
 typedef union SDL_Event SDL_Event;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context);
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForVulkan(SDL_Window* window);
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForD3D(SDL_Window* window);
@@ -36,8 +38,9 @@ IMGUI_IMPL_API void     ImGui_ImplSDL2_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplSDL2_NewFrame();
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event);
 
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-static inline void ImGui_ImplSDL2_NewFrame(SDL_Window*) { ImGui_ImplSDL2_NewFrame(); } // 1.84: removed unnecessary parameter
-#endif
+// Gamepad selection automatically starts in AutoFirst mode, picking first available SDL_Gamepad. You may override this.
+// When using manual mode, caller is responsible for opening/closing gamepad.
+enum ImGui_ImplSDL2_GamepadMode { ImGui_ImplSDL2_GamepadMode_AutoFirst, ImGui_ImplSDL2_GamepadMode_AutoAll, ImGui_ImplSDL2_GamepadMode_Manual };
+IMGUI_IMPL_API void     ImGui_ImplSDL2_SetGamepadMode(ImGui_ImplSDL2_GamepadMode mode, struct _SDL_GameController** manual_gamepads_array = NULL, int manual_gamepads_count = -1);
 
 #endif // #ifndef IMGUI_DISABLE

external/imgui/imgui/backends/imgui_impl_sdl3.cpp

@@ -1,7 +1,8 @@
 // dear imgui: Platform Backend for SDL3 (*EXPERIMENTAL*)
 // This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
 // (Info: SDL3 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
-// (IMPORTANT: SDL 3.0.0 is NOT YET RELEASED. IT IS POSSIBLE THAT ITS SPECS/API WILL CHANGE BEFORE RELEASE)
+
+// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
 
 // Implemented features:
 //  [X] Platform: Clipboard support.
@@ -9,8 +10,6 @@
 //  [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy SDL_SCANCODE_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
 //  [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
-// Missing features:
-//  [x] Platform: Basic IME support. Position somehow broken in SDL3 + app needs to call 'SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");' before SDL_CreateWindow()!.
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -22,6 +21,24 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-09-03: Update for SDL3 api changes: SDL_GetGamepads() memory ownership revert. (#7918, #7898, #7807)
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
+//               - io.PlatformSetImeDataFn  -> platform_io.Platform_SetImeDataFn
+//  2024-08-19: Storing SDL_WindowID inside ImGuiViewport::PlatformHandle instead of SDL_Window*.
+//  2024-08-19: ImGui_ImplSDL3_ProcessEvent() now ignores events intended for other SDL windows. (#7853)
+//  2024-07-22: Update for SDL3 api changes: SDL_GetGamepads() memory ownership change. (#7807)
+//  2024-07-18: Update for SDL3 api changes: SDL_GetClipboardText() memory ownership change. (#7801)
+//  2024-07-15: Update for SDL3 api changes: SDL_GetProperty() change to SDL_GetPointerProperty(). (#7794)
+//  2024-07-02: Update for SDL3 api changes: SDLK_x renames and SDLK_KP_x removals (#7761, #7762).
+//  2024-07-01: Update for SDL3 api changes: SDL_SetTextInputRect() changed to SDL_SetTextInputArea().
+//  2024-06-26: Update for SDL3 api changes: SDL_StartTextInput()/SDL_StopTextInput()/SDL_SetTextInputRect() functions signatures.
+//  2024-06-24: Update for SDL3 api changes: SDL_EVENT_KEY_DOWN/SDL_EVENT_KEY_UP contents.
+//  2024-06-03; Update for SDL3 api changes: SDL_SYSTEM_CURSOR_ renames.
+//  2024-05-15: Update for SDL3 api changes: SDLK_ renames.
+//  2024-04-15: Inputs: Re-enable calling SDL_StartTextInput()/SDL_StopTextInput() as SDL3 no longer enables it by default and should play nicer with IME.
+//  2024-02-13: Inputs: Fixed gamepad support. Handle gamepad disconnection. Added ImGui_ImplSDL3_SetGamepadMode().
 //  2023-11-13: Updated for recent SDL3 API changes.
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys.
 //  2023-05-04: Fixed build on Emscripten/iOS/Android. (#6391)
@@ -58,19 +75,38 @@
 #define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE    0
 #endif
 
+// FIXME-LEGACY: remove when SDL 3.1.3 preview is released.
+#ifndef SDLK_APOSTROPHE
+#define SDLK_APOSTROPHE SDLK_QUOTE
+#endif
+#ifndef SDLK_GRAVE
+#define SDLK_GRAVE SDLK_BACKQUOTE
+#endif
+
 // SDL Data
 struct ImGui_ImplSDL3_Data
 {
-    SDL_Window*     Window;
-    SDL_Renderer*   Renderer;
-    Uint64          Time;
-    Uint32          MouseWindowID;
-    int             MouseButtonsDown;
-    SDL_Cursor*     MouseCursors[ImGuiMouseCursor_COUNT];
-    SDL_Cursor*     LastMouseCursor;
-    int             PendingMouseLeaveFrame;
-    char*           ClipboardTextData;
-    bool            MouseCanUseGlobalState;
+    SDL_Window*             Window;
+    SDL_WindowID            WindowID;
+    SDL_Renderer*           Renderer;
+    Uint64                  Time;
+    char*                   ClipboardTextData;
+
+    // IME handling
+    SDL_Window*             ImeWindow;
+
+    // Mouse handling
+    Uint32                  MouseWindowID;
+    int                     MouseButtonsDown;
+    SDL_Cursor*             MouseCursors[ImGuiMouseCursor_COUNT];
+    SDL_Cursor*             MouseLastCursor;
+    int                     MousePendingLeaveFrame;
+    bool                    MouseCanUseGlobalState;
+
+    // Gamepad handling
+    ImVector<SDL_Gamepad*>      Gamepads;
+    ImGui_ImplSDL3_GamepadMode  GamepadMode;
+    bool                        WantUpdateGamepadsList;
 
     ImGui_ImplSDL3_Data()   { memset((void*)this, 0, sizeof(*this)); }
 };
@@ -85,22 +121,31 @@ static ImGui_ImplSDL3_Data* ImGui_ImplSDL3_GetBackendData()
 }
 
 // Functions
-static const char* ImGui_ImplSDL3_GetClipboardText(void*)
+static const char* ImGui_ImplSDL3_GetClipboardText(ImGuiContext*)
 {
     ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
     if (bd->ClipboardTextData)
         SDL_free(bd->ClipboardTextData);
-    bd->ClipboardTextData = SDL_GetClipboardText();
+    const char* sdl_clipboard_text = SDL_GetClipboardText();
+    bd->ClipboardTextData = sdl_clipboard_text ? SDL_strdup(sdl_clipboard_text) : NULL;
     return bd->ClipboardTextData;
 }
 
-static void ImGui_ImplSDL3_SetClipboardText(void*, const char* text)
+static void ImGui_ImplSDL3_SetClipboardText(ImGuiContext*, const char* text)
 {
     SDL_SetClipboardText(text);
 }
 
-static void ImGui_ImplSDL3_SetPlatformImeData(ImGuiViewport*, ImGuiPlatformImeData* data)
+static void ImGui_ImplSDL3_PlatformSetImeData(ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data)
 {
+    ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
+    SDL_WindowID window_id = (SDL_WindowID)(intptr_t)viewport->PlatformHandle;
+    SDL_Window* window = SDL_GetWindowFromID(window_id);
+    if ((data->WantVisible == false || bd->ImeWindow != window) && bd->ImeWindow != NULL)
+    {
+        SDL_StopTextInput(bd->ImeWindow);
+        bd->ImeWindow = nullptr;
+    }
     if (data->WantVisible)
     {
         SDL_Rect r;
@@ -108,12 +153,37 @@ static void ImGui_ImplSDL3_SetPlatformImeData(ImGuiViewport*, ImGuiPlatformImeDa
         r.y = (int)data->InputPos.y;
         r.w = 1;
         r.h = (int)data->InputLineHeight;
-        SDL_SetTextInputRect(&r);
+        SDL_SetTextInputArea(window, &r, 0);
+        SDL_StartTextInput(window);
+        bd->ImeWindow = window;
     }
 }
 
-static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplSDL3_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
 {
+    // Keypad doesn't have individual key values in SDL3
+    switch (scancode)
+    {
+        case SDL_SCANCODE_KP_0: return ImGuiKey_Keypad0;
+        case SDL_SCANCODE_KP_1: return ImGuiKey_Keypad1;
+        case SDL_SCANCODE_KP_2: return ImGuiKey_Keypad2;
+        case SDL_SCANCODE_KP_3: return ImGuiKey_Keypad3;
+        case SDL_SCANCODE_KP_4: return ImGuiKey_Keypad4;
+        case SDL_SCANCODE_KP_5: return ImGuiKey_Keypad5;
+        case SDL_SCANCODE_KP_6: return ImGuiKey_Keypad6;
+        case SDL_SCANCODE_KP_7: return ImGuiKey_Keypad7;
+        case SDL_SCANCODE_KP_8: return ImGuiKey_Keypad8;
+        case SDL_SCANCODE_KP_9: return ImGuiKey_Keypad9;
+        case SDL_SCANCODE_KP_PERIOD: return ImGuiKey_KeypadDecimal;
+        case SDL_SCANCODE_KP_DIVIDE: return ImGuiKey_KeypadDivide;
+        case SDL_SCANCODE_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;
+        case SDL_SCANCODE_KP_MINUS: return ImGuiKey_KeypadSubtract;
+        case SDL_SCANCODE_KP_PLUS: return ImGuiKey_KeypadAdd;
+        case SDL_SCANCODE_KP_ENTER: return ImGuiKey_KeypadEnter;
+        case SDL_SCANCODE_KP_EQUALS: return ImGuiKey_KeypadEqual;
+        default: break;
+    }
     switch (keycode)
     {
         case SDLK_TAB: return ImGuiKey_Tab;
@@ -131,7 +201,7 @@ static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
         case SDLK_SPACE: return ImGuiKey_Space;
         case SDLK_RETURN: return ImGuiKey_Enter;
         case SDLK_ESCAPE: return ImGuiKey_Escape;
-        case SDLK_QUOTE: return ImGuiKey_Apostrophe;
+        case SDLK_APOSTROPHE: return ImGuiKey_Apostrophe;
         case SDLK_COMMA: return ImGuiKey_Comma;
         case SDLK_MINUS: return ImGuiKey_Minus;
         case SDLK_PERIOD: return ImGuiKey_Period;
@@ -141,29 +211,12 @@ static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
         case SDLK_LEFTBRACKET: return ImGuiKey_LeftBracket;
         case SDLK_BACKSLASH: return ImGuiKey_Backslash;
         case SDLK_RIGHTBRACKET: return ImGuiKey_RightBracket;
-        case SDLK_BACKQUOTE: return ImGuiKey_GraveAccent;
+        case SDLK_GRAVE: return ImGuiKey_GraveAccent;
         case SDLK_CAPSLOCK: return ImGuiKey_CapsLock;
         case SDLK_SCROLLLOCK: return ImGuiKey_ScrollLock;
         case SDLK_NUMLOCKCLEAR: return ImGuiKey_NumLock;
         case SDLK_PRINTSCREEN: return ImGuiKey_PrintScreen;
         case SDLK_PAUSE: return ImGuiKey_Pause;
-        case SDLK_KP_0: return ImGuiKey_Keypad0;
-        case SDLK_KP_1: return ImGuiKey_Keypad1;
-        case SDLK_KP_2: return ImGuiKey_Keypad2;
-        case SDLK_KP_3: return ImGuiKey_Keypad3;
-        case SDLK_KP_4: return ImGuiKey_Keypad4;
-        case SDLK_KP_5: return ImGuiKey_Keypad5;
-        case SDLK_KP_6: return ImGuiKey_Keypad6;
-        case SDLK_KP_7: return ImGuiKey_Keypad7;
-        case SDLK_KP_8: return ImGuiKey_Keypad8;
-        case SDLK_KP_9: return ImGuiKey_Keypad9;
-        case SDLK_KP_PERIOD: return ImGuiKey_KeypadDecimal;
-        case SDLK_KP_DIVIDE: return ImGuiKey_KeypadDivide;
-        case SDLK_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;
-        case SDLK_KP_MINUS: return ImGuiKey_KeypadSubtract;
-        case SDLK_KP_PLUS: return ImGuiKey_KeypadAdd;
-        case SDLK_KP_ENTER: return ImGuiKey_KeypadEnter;
-        case SDLK_KP_EQUALS: return ImGuiKey_KeypadEqual;
         case SDLK_LCTRL: return ImGuiKey_LeftCtrl;
         case SDLK_LSHIFT: return ImGuiKey_LeftShift;
         case SDLK_LALT: return ImGuiKey_LeftAlt;
@@ -183,32 +236,32 @@ static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
         case SDLK_7: return ImGuiKey_7;
         case SDLK_8: return ImGuiKey_8;
         case SDLK_9: return ImGuiKey_9;
-        case SDLK_a: return ImGuiKey_A;
-        case SDLK_b: return ImGuiKey_B;
-        case SDLK_c: return ImGuiKey_C;
-        case SDLK_d: return ImGuiKey_D;
-        case SDLK_e: return ImGuiKey_E;
-        case SDLK_f: return ImGuiKey_F;
-        case SDLK_g: return ImGuiKey_G;
-        case SDLK_h: return ImGuiKey_H;
-        case SDLK_i: return ImGuiKey_I;
-        case SDLK_j: return ImGuiKey_J;
-        case SDLK_k: return ImGuiKey_K;
-        case SDLK_l: return ImGuiKey_L;
-        case SDLK_m: return ImGuiKey_M;
-        case SDLK_n: return ImGuiKey_N;
-        case SDLK_o: return ImGuiKey_O;
-        case SDLK_p: return ImGuiKey_P;
-        case SDLK_q: return ImGuiKey_Q;
-        case SDLK_r: return ImGuiKey_R;
-        case SDLK_s: return ImGuiKey_S;
-        case SDLK_t: return ImGuiKey_T;
-        case SDLK_u: return ImGuiKey_U;
-        case SDLK_v: return ImGuiKey_V;
-        case SDLK_w: return ImGuiKey_W;
-        case SDLK_x: return ImGuiKey_X;
-        case SDLK_y: return ImGuiKey_Y;
-        case SDLK_z: return ImGuiKey_Z;
+        case SDLK_A: return ImGuiKey_A;
+        case SDLK_B: return ImGuiKey_B;
+        case SDLK_C: return ImGuiKey_C;
+        case SDLK_D: return ImGuiKey_D;
+        case SDLK_E: return ImGuiKey_E;
+        case SDLK_F: return ImGuiKey_F;
+        case SDLK_G: return ImGuiKey_G;
+        case SDLK_H: return ImGuiKey_H;
+        case SDLK_I: return ImGuiKey_I;
+        case SDLK_J: return ImGuiKey_J;
+        case SDLK_K: return ImGuiKey_K;
+        case SDLK_L: return ImGuiKey_L;
+        case SDLK_M: return ImGuiKey_M;
+        case SDLK_N: return ImGuiKey_N;
+        case SDLK_O: return ImGuiKey_O;
+        case SDLK_P: return ImGuiKey_P;
+        case SDLK_Q: return ImGuiKey_Q;
+        case SDLK_R: return ImGuiKey_R;
+        case SDLK_S: return ImGuiKey_S;
+        case SDLK_T: return ImGuiKey_T;
+        case SDLK_U: return ImGuiKey_U;
+        case SDLK_V: return ImGuiKey_V;
+        case SDLK_W: return ImGuiKey_W;
+        case SDLK_X: return ImGuiKey_X;
+        case SDLK_Y: return ImGuiKey_Y;
+        case SDLK_Z: return ImGuiKey_Z;
         case SDLK_F1: return ImGuiKey_F1;
         case SDLK_F2: return ImGuiKey_F2;
         case SDLK_F3: return ImGuiKey_F3;
@@ -235,6 +288,7 @@ static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
         case SDLK_F24: return ImGuiKey_F24;
         case SDLK_AC_BACK: return ImGuiKey_AppBack;
         case SDLK_AC_FORWARD: return ImGuiKey_AppForward;
+        default: break;
     }
     return ImGuiKey_None;
 }
@@ -248,6 +302,13 @@ static void ImGui_ImplSDL3_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
     io.AddKeyEvent(ImGuiMod_Super, (sdl_key_mods & SDL_KMOD_GUI) != 0);
 }
 
+
+static ImGuiViewport* ImGui_ImplSDL3_GetViewportForWindowID(SDL_WindowID window_id)
+{
+    ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
+    return (window_id == bd->WindowID) ? ImGui::GetMainViewport() : NULL;
+}
+
 // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
 // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
 // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
@@ -255,13 +316,16 @@ static void ImGui_ImplSDL3_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
 // If you have multiple SDL events and some of them are not meant to be used by dear imgui, you may need to filter events based on their windowID field.
 bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
 {
-    ImGuiIO& io = ImGui::GetIO();
     ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDL3_Init()?");
+    ImGuiIO& io = ImGui::GetIO();
 
     switch (event->type)
     {
         case SDL_EVENT_MOUSE_MOTION:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->motion.windowID) == NULL)
+                return false;
             ImVec2 mouse_pos((float)event->motion.x, (float)event->motion.y);
             io.AddMouseSourceEvent(event->motion.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);
             io.AddMousePosEvent(mouse_pos.x, mouse_pos.y);
@@ -269,6 +333,8 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         }
         case SDL_EVENT_MOUSE_WHEEL:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->wheel.windowID) == NULL)
+                return false;
             //IMGUI_DEBUG_LOG("wheel %.2f %.2f, precise %.2f %.2f\n", (float)event->wheel.x, (float)event->wheel.y, event->wheel.preciseX, event->wheel.preciseY);
             float wheel_x = -event->wheel.x;
             float wheel_y = event->wheel.y;
@@ -282,6 +348,8 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         case SDL_EVENT_MOUSE_BUTTON_DOWN:
         case SDL_EVENT_MOUSE_BUTTON_UP:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->button.windowID) == NULL)
+                return false;
             int mouse_button = -1;
             if (event->button.button == SDL_BUTTON_LEFT) { mouse_button = 0; }
             if (event->button.button == SDL_BUTTON_RIGHT) { mouse_button = 1; }
@@ -297,22 +365,29 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         }
         case SDL_EVENT_TEXT_INPUT:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->text.windowID) == NULL)
+                return false;
             io.AddInputCharactersUTF8(event->text.text);
             return true;
         }
         case SDL_EVENT_KEY_DOWN:
         case SDL_EVENT_KEY_UP:
         {
-            ImGui_ImplSDL3_UpdateKeyModifiers((SDL_Keymod)event->key.keysym.mod);
-            ImGuiKey key = ImGui_ImplSDL3_KeycodeToImGuiKey(event->key.keysym.sym);
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->key.windowID) == NULL)
+                return false;
+            //IMGUI_DEBUG_LOG("SDL_EVENT_KEY_%d: key=%d, scancode=%d, mod=%X\n", (event->type == SDL_EVENT_KEY_DOWN) ? "DOWN" : "UP", event->key.key, event->key.scancode, event->key.mod);
+            ImGui_ImplSDL3_UpdateKeyModifiers((SDL_Keymod)event->key.mod);
+            ImGuiKey key = ImGui_ImplSDL3_KeyEventToImGuiKey(event->key.key, event->key.scancode);
             io.AddKeyEvent(key, (event->type == SDL_EVENT_KEY_DOWN));
-            io.SetKeyEventNativeData(key, event->key.keysym.sym, event->key.keysym.scancode, event->key.keysym.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
+            io.SetKeyEventNativeData(key, event->key.key, event->key.scancode, event->key.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
             return true;
         }
         case SDL_EVENT_WINDOW_MOUSE_ENTER:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID) == NULL)
+                return false;
             bd->MouseWindowID = event->window.windowID;
-            bd->PendingMouseLeaveFrame = 0;
+            bd->MousePendingLeaveFrame = 0;
             return true;
         }
         // - In some cases, when detaching a window from main viewport SDL may send SDL_WINDOWEVENT_ENTER one frame too late,
@@ -321,33 +396,44 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         // FIXME: Unconfirmed whether this is still needed with SDL3.
         case SDL_EVENT_WINDOW_MOUSE_LEAVE:
         {
-            bd->PendingMouseLeaveFrame = ImGui::GetFrameCount() + 1;
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID) == NULL)
+                return false;
+            bd->MousePendingLeaveFrame = ImGui::GetFrameCount() + 1;
             return true;
         }
         case SDL_EVENT_WINDOW_FOCUS_GAINED:
-            io.AddFocusEvent(true);
-            return true;
         case SDL_EVENT_WINDOW_FOCUS_LOST:
-            io.AddFocusEvent(false);
+        {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID) == NULL)
+                return false;
+            io.AddFocusEvent(event->type == SDL_EVENT_WINDOW_FOCUS_GAINED);
             return true;
+        }
+        case SDL_EVENT_GAMEPAD_ADDED:
+        case SDL_EVENT_GAMEPAD_REMOVED:
+        {
+            bd->WantUpdateGamepadsList = true;
+            return true;
+        }
     }
     return false;
 }
 
 static void ImGui_ImplSDL3_SetupPlatformHandles(ImGuiViewport* viewport, SDL_Window* window)
 {
-    IM_UNUSED(window);
+    viewport->PlatformHandle = (void*)(intptr_t)SDL_GetWindowID(window);
     viewport->PlatformHandleRaw = nullptr;
-#if defined(__WIN32__) && !defined(__WINRT__)
-    viewport->PlatformHandleRaw = (HWND)SDL_GetProperty(SDL_GetWindowProperties(window), "SDL.window.win32.hwnd", nullptr);
+#if defined(_WIN32) && !defined(__WINRT__)
+    viewport->PlatformHandleRaw = (HWND)SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WIN32_HWND_POINTER, nullptr);
 #elif defined(__APPLE__) && defined(SDL_VIDEO_DRIVER_COCOA)
-    viewport->PlatformHandleRaw = (void*)SDL_GetProperty(SDL_GetWindowProperties(window), "SDL.window.cocoa.window", nullptr);
+    viewport->PlatformHandleRaw = SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_COCOA_WINDOW_POINTER, nullptr);
 #endif
 }
 
 static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void* sdl_gl_context)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
     IM_UNUSED(sdl_gl_context); // Unused in this branch
 
@@ -370,24 +456,29 @@ static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void
     io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;            // We can honor io.WantSetMousePos requests (optional, rarely used)
 
     bd->Window = window;
+    bd->WindowID = SDL_GetWindowID(window);
     bd->Renderer = renderer;
     bd->MouseCanUseGlobalState = mouse_can_use_global_state;
 
-    io.SetClipboardTextFn = ImGui_ImplSDL3_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplSDL3_GetClipboardText;
-    io.ClipboardUserData = nullptr;
-    io.SetPlatformImeDataFn = ImGui_ImplSDL3_SetPlatformImeData;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Platform_SetClipboardTextFn = ImGui_ImplSDL3_SetClipboardText;
+    platform_io.Platform_GetClipboardTextFn = ImGui_ImplSDL3_GetClipboardText;
+    platform_io.Platform_SetImeDataFn = ImGui_ImplSDL3_PlatformSetImeData;
+
+    // Gamepad handling
+    bd->GamepadMode = ImGui_ImplSDL3_GamepadMode_AutoFirst;
+    bd->WantUpdateGamepadsList = true;
 
     // Load mouse cursors
-    bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
-    bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
-    bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
-    bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
+    bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_DEFAULT);
+    bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_TEXT);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_MOVE);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NS_RESIZE);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_EW_RESIZE);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NESW_RESIZE);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NWSE_RESIZE);
+    bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_POINTER);
+    bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NOT_ALLOWED);
 
     // Set platform dependent data in viewport
     // Our mouse update function expect PlatformHandle to be filled for the main viewport
@@ -445,6 +536,8 @@ bool ImGui_ImplSDL3_InitForOther(SDL_Window* window)
     return ImGui_ImplSDL3_Init(window, nullptr, nullptr);
 }
 
+static void ImGui_ImplSDL3_CloseGamepads();
+
 void ImGui_ImplSDL3_Shutdown()
 {
     ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
@@ -455,7 +548,7 @@ void ImGui_ImplSDL3_Shutdown()
         SDL_free(bd->ClipboardTextData);
     for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
         SDL_DestroyCursor(bd->MouseCursors[cursor_n]);
-    bd->LastMouseCursor = nullptr;
+    ImGui_ImplSDL3_CloseGamepads();
 
     io.BackendPlatformName = nullptr;
     io.BackendPlatformUserData = nullptr;
@@ -471,7 +564,7 @@ static void ImGui_ImplSDL3_UpdateMouseData()
     // We forward mouse input when hovered or captured (via SDL_EVENT_MOUSE_MOTION) or when focused (below)
 #if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
     // SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger other operations outside
-    SDL_CaptureMouse((bd->MouseButtonsDown != 0) ? SDL_TRUE : SDL_FALSE);
+    SDL_CaptureMouse(bd->MouseButtonsDown != 0);
     SDL_Window* focused_window = SDL_GetKeyboardFocus();
     const bool is_app_focused = (bd->Window == focused_window);
 #else
@@ -514,65 +607,125 @@ static void ImGui_ImplSDL3_UpdateMouseCursor()
     {
         // Show OS mouse cursor
         SDL_Cursor* expected_cursor = bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow];
-        if (bd->LastMouseCursor != expected_cursor)
+        if (bd->MouseLastCursor != expected_cursor)
         {
             SDL_SetCursor(expected_cursor); // SDL function doesn't have an early out (see #6113)
-            bd->LastMouseCursor = expected_cursor;
+            bd->MouseLastCursor = expected_cursor;
         }
         SDL_ShowCursor();
     }
 }
 
+static void ImGui_ImplSDL3_CloseGamepads()
+{
+    ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
+    if (bd->GamepadMode != ImGui_ImplSDL3_GamepadMode_Manual)
+        for (SDL_Gamepad* gamepad : bd->Gamepads)
+            SDL_CloseGamepad(gamepad);
+    bd->Gamepads.resize(0);
+}
+
+void ImGui_ImplSDL3_SetGamepadMode(ImGui_ImplSDL3_GamepadMode mode, SDL_Gamepad** manual_gamepads_array, int manual_gamepads_count)
+{
+    ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
+    ImGui_ImplSDL3_CloseGamepads();
+    if (mode == ImGui_ImplSDL3_GamepadMode_Manual)
+    {
+        IM_ASSERT(manual_gamepads_array != nullptr && manual_gamepads_count > 0);
+        for (int n = 0; n < manual_gamepads_count; n++)
+            bd->Gamepads.push_back(manual_gamepads_array[n]);
+    }
+    else
+    {
+        IM_ASSERT(manual_gamepads_array == nullptr && manual_gamepads_count <= 0);
+        bd->WantUpdateGamepadsList = true;
+    }
+    bd->GamepadMode = mode;
+}
+
+static void ImGui_ImplSDL3_UpdateGamepadButton(ImGui_ImplSDL3_Data* bd, ImGuiIO& io, ImGuiKey key, SDL_GamepadButton button_no)
+{
+    bool merged_value = false;
+    for (SDL_Gamepad* gamepad : bd->Gamepads)
+        merged_value |= SDL_GetGamepadButton(gamepad, button_no) != 0;
+    io.AddKeyEvent(key, merged_value);
+}
+
+static inline float Saturate(float v) { return v < 0.0f ? 0.0f : v  > 1.0f ? 1.0f : v; }
+static void ImGui_ImplSDL3_UpdateGamepadAnalog(ImGui_ImplSDL3_Data* bd, ImGuiIO& io, ImGuiKey key, SDL_GamepadAxis axis_no, float v0, float v1)
+{
+    float merged_value = 0.0f;
+    for (SDL_Gamepad* gamepad : bd->Gamepads)
+    {
+        float vn = Saturate((float)(SDL_GetGamepadAxis(gamepad, axis_no) - v0) / (float)(v1 - v0));
+        if (merged_value < vn)
+            merged_value = vn;
+    }
+    io.AddKeyAnalogEvent(key, merged_value > 0.1f, merged_value);
+}
+
 static void ImGui_ImplSDL3_UpdateGamepads()
 {
     ImGuiIO& io = ImGui::GetIO();
-    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
-        return;
+    ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
 
-    // Get gamepad
+    // Update list of gamepads to use
+    if (bd->WantUpdateGamepadsList && bd->GamepadMode != ImGui_ImplSDL3_GamepadMode_Manual)
+    {
+        ImGui_ImplSDL3_CloseGamepads();
+        int sdl_gamepads_count = 0;
+        SDL_JoystickID* sdl_gamepads = SDL_GetGamepads(&sdl_gamepads_count);
+        for (int n = 0; n < sdl_gamepads_count; n++)
+            if (SDL_Gamepad* gamepad = SDL_OpenGamepad(sdl_gamepads[n]))
+            {
+                bd->Gamepads.push_back(gamepad);
+                if (bd->GamepadMode == ImGui_ImplSDL3_GamepadMode_AutoFirst)
+                    break;
+            }
+        bd->WantUpdateGamepadsList = false;
+        SDL_free(sdl_gamepads);
+    }
+
+    // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
+    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
+        return;
     io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
-    SDL_Gamepad* gamepad = SDL_OpenGamepad(0);
-    if (!gamepad)
+    if (bd->Gamepads.Size == 0)
         return;
     io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
 
     // Update gamepad inputs
-    #define IM_SATURATE(V)                      (V < 0.0f ? 0.0f : V > 1.0f ? 1.0f : V)
-    #define MAP_BUTTON(KEY_NO, BUTTON_NO)       { io.AddKeyEvent(KEY_NO, SDL_GetGamepadButton(gamepad, BUTTON_NO) != 0); }
-    #define MAP_ANALOG(KEY_NO, AXIS_NO, V0, V1) { float vn = (float)(SDL_GetGamepadAxis(gamepad, AXIS_NO) - V0) / (float)(V1 - V0); vn = IM_SATURATE(vn); io.AddKeyAnalogEvent(KEY_NO, vn > 0.1f, vn); }
-    const int thumb_dead_zone = 8000;           // SDL_gamecontroller.h suggests using this value.
-    MAP_BUTTON(ImGuiKey_GamepadStart,           SDL_GAMEPAD_BUTTON_START);
-    MAP_BUTTON(ImGuiKey_GamepadBack,            SDL_GAMEPAD_BUTTON_BACK);
-    MAP_BUTTON(ImGuiKey_GamepadFaceLeft,        SDL_GAMEPAD_BUTTON_WEST);           // Xbox X, PS Square
-    MAP_BUTTON(ImGuiKey_GamepadFaceRight,       SDL_GAMEPAD_BUTTON_EAST);           // Xbox B, PS Circle
-    MAP_BUTTON(ImGuiKey_GamepadFaceUp,          SDL_GAMEPAD_BUTTON_NORTH);          // Xbox Y, PS Triangle
-    MAP_BUTTON(ImGuiKey_GamepadFaceDown,        SDL_GAMEPAD_BUTTON_SOUTH);          // Xbox A, PS Cross
-    MAP_BUTTON(ImGuiKey_GamepadDpadLeft,        SDL_GAMEPAD_BUTTON_DPAD_LEFT);
-    MAP_BUTTON(ImGuiKey_GamepadDpadRight,       SDL_GAMEPAD_BUTTON_DPAD_RIGHT);
-    MAP_BUTTON(ImGuiKey_GamepadDpadUp,          SDL_GAMEPAD_BUTTON_DPAD_UP);
-    MAP_BUTTON(ImGuiKey_GamepadDpadDown,        SDL_GAMEPAD_BUTTON_DPAD_DOWN);
-    MAP_BUTTON(ImGuiKey_GamepadL1,              SDL_GAMEPAD_BUTTON_LEFT_SHOULDER);
-    MAP_BUTTON(ImGuiKey_GamepadR1,              SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER);
-    MAP_ANALOG(ImGuiKey_GamepadL2,              SDL_GAMEPAD_AXIS_LEFT_TRIGGER,  0.0f, 32767);
-    MAP_ANALOG(ImGuiKey_GamepadR2,              SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, 0.0f, 32767);
-    MAP_BUTTON(ImGuiKey_GamepadL3,              SDL_GAMEPAD_BUTTON_LEFT_STICK);
-    MAP_BUTTON(ImGuiKey_GamepadR3,              SDL_GAMEPAD_BUTTON_RIGHT_STICK);
-    MAP_ANALOG(ImGuiKey_GamepadLStickLeft,      SDL_GAMEPAD_AXIS_LEFTX,  -thumb_dead_zone, -32768);
-    MAP_ANALOG(ImGuiKey_GamepadLStickRight,     SDL_GAMEPAD_AXIS_LEFTX,  +thumb_dead_zone, +32767);
-    MAP_ANALOG(ImGuiKey_GamepadLStickUp,        SDL_GAMEPAD_AXIS_LEFTY,  -thumb_dead_zone, -32768);
-    MAP_ANALOG(ImGuiKey_GamepadLStickDown,      SDL_GAMEPAD_AXIS_LEFTY,  +thumb_dead_zone, +32767);
-    MAP_ANALOG(ImGuiKey_GamepadRStickLeft,      SDL_GAMEPAD_AXIS_RIGHTX, -thumb_dead_zone, -32768);
-    MAP_ANALOG(ImGuiKey_GamepadRStickRight,     SDL_GAMEPAD_AXIS_RIGHTX, +thumb_dead_zone, +32767);
-    MAP_ANALOG(ImGuiKey_GamepadRStickUp,        SDL_GAMEPAD_AXIS_RIGHTY, -thumb_dead_zone, -32768);
-    MAP_ANALOG(ImGuiKey_GamepadRStickDown,      SDL_GAMEPAD_AXIS_RIGHTY, +thumb_dead_zone, +32767);
-    #undef MAP_BUTTON
-    #undef MAP_ANALOG
+    const int thumb_dead_zone = 8000;           // SDL_gamepad.h suggests using this value.
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadStart,       SDL_GAMEPAD_BUTTON_START);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadBack,        SDL_GAMEPAD_BUTTON_BACK);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceLeft,    SDL_GAMEPAD_BUTTON_WEST);           // Xbox X, PS Square
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceRight,   SDL_GAMEPAD_BUTTON_EAST);           // Xbox B, PS Circle
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceUp,      SDL_GAMEPAD_BUTTON_NORTH);          // Xbox Y, PS Triangle
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceDown,    SDL_GAMEPAD_BUTTON_SOUTH);          // Xbox A, PS Cross
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadLeft,    SDL_GAMEPAD_BUTTON_DPAD_LEFT);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadRight,   SDL_GAMEPAD_BUTTON_DPAD_RIGHT);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadUp,      SDL_GAMEPAD_BUTTON_DPAD_UP);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadDown,    SDL_GAMEPAD_BUTTON_DPAD_DOWN);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadL1,          SDL_GAMEPAD_BUTTON_LEFT_SHOULDER);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadR1,          SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadL2,          SDL_GAMEPAD_AXIS_LEFT_TRIGGER,  0.0f, 32767);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadR2,          SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, 0.0f, 32767);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadL3,          SDL_GAMEPAD_BUTTON_LEFT_STICK);
+    ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadR3,          SDL_GAMEPAD_BUTTON_RIGHT_STICK);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickLeft,  SDL_GAMEPAD_AXIS_LEFTX,  -thumb_dead_zone, -32768);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickRight, SDL_GAMEPAD_AXIS_LEFTX,  +thumb_dead_zone, +32767);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickUp,    SDL_GAMEPAD_AXIS_LEFTY,  -thumb_dead_zone, -32768);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickDown,  SDL_GAMEPAD_AXIS_LEFTY,  +thumb_dead_zone, +32767);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickLeft,  SDL_GAMEPAD_AXIS_RIGHTX, -thumb_dead_zone, -32768);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickRight, SDL_GAMEPAD_AXIS_RIGHTX, +thumb_dead_zone, +32767);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickUp,    SDL_GAMEPAD_AXIS_RIGHTY, -thumb_dead_zone, -32768);
+    ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickDown,  SDL_GAMEPAD_AXIS_RIGHTY, +thumb_dead_zone, +32767);
 }
 
 void ImGui_ImplSDL3_NewFrame()
 {
     ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplSDL3_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDL3_Init()?");
     ImGuiIO& io = ImGui::GetIO();
 
     // Setup display size (every frame to accommodate for window resizing)
@@ -595,10 +748,10 @@ void ImGui_ImplSDL3_NewFrame()
     io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
     bd->Time = current_time;
 
-    if (bd->PendingMouseLeaveFrame && bd->PendingMouseLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
+    if (bd->MousePendingLeaveFrame && bd->MousePendingLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
     {
         bd->MouseWindowID = 0;
-        bd->PendingMouseLeaveFrame = 0;
+        bd->MousePendingLeaveFrame = 0;
         io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
     }
 

external/imgui/imgui/backends/imgui_impl_sdl3.h

@@ -1,7 +1,8 @@
 // dear imgui: Platform Backend for SDL3 (*EXPERIMENTAL*)
 // This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
 // (Info: SDL3 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
-// (IMPORTANT: SDL 3.0.0 is NOT YET RELEASED. IT IS POSSIBLE THAT ITS SPECS/API WILL CHANGE BEFORE RELEASE)
+
+// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
 
 // Implemented features:
 //  [X] Platform: Clipboard support.
@@ -9,8 +10,6 @@
 //  [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy SDL_SCANCODE_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
 //  [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
-// Missing features:
-//  [x] Platform: Basic IME support. Position somehow broken in SDL3 + app needs to call 'SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");' before SDL_CreateWindow()!.
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -26,8 +25,10 @@
 
 struct SDL_Window;
 struct SDL_Renderer;
+struct SDL_Gamepad;
 typedef union SDL_Event SDL_Event;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDL3_InitForOpenGL(SDL_Window* window, void* sdl_gl_context);
 IMGUI_IMPL_API bool     ImGui_ImplSDL3_InitForVulkan(SDL_Window* window);
 IMGUI_IMPL_API bool     ImGui_ImplSDL3_InitForD3D(SDL_Window* window);
@@ -38,4 +39,9 @@ IMGUI_IMPL_API void     ImGui_ImplSDL3_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplSDL3_NewFrame();
 IMGUI_IMPL_API bool     ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event);
 
+// Gamepad selection automatically starts in AutoFirst mode, picking first available SDL_Gamepad. You may override this.
+// When using manual mode, caller is responsible for opening/closing gamepad.
+enum ImGui_ImplSDL3_GamepadMode { ImGui_ImplSDL3_GamepadMode_AutoFirst, ImGui_ImplSDL3_GamepadMode_AutoAll, ImGui_ImplSDL3_GamepadMode_Manual };
+IMGUI_IMPL_API void     ImGui_ImplSDL3_SetGamepadMode(ImGui_ImplSDL3_GamepadMode mode, SDL_Gamepad** manual_gamepads_array = NULL, int manual_gamepads_count = -1);
+
 #endif // #ifndef IMGUI_DISABLE

external/imgui/imgui/backends/imgui_impl_sdlrenderer2.cpp

@@ -20,6 +20,7 @@
 // - Introduction, links and more at the top of imgui.cpp
 
 // CHANGELOG
+//  2024-05-14: *BREAKING CHANGE* ImGui_ImplSDLRenderer3_RenderDrawData() requires SDL_Renderer* passed as parameter.
 //  2023-05-30: Renamed imgui_impl_sdlrenderer.h/.cpp to imgui_impl_sdlrenderer2.h/.cpp to accommodate for upcoming SDL3.
 //  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
 //  2021-12-21: Update SDL_RenderGeometryRaw() format to work with SDL 2.0.19.
@@ -47,9 +48,9 @@
 // SDL_Renderer data
 struct ImGui_ImplSDLRenderer2_Data
 {
-    SDL_Renderer*   SDLRenderer;
+    SDL_Renderer*   Renderer;       // Main viewport's renderer
     SDL_Texture*    FontTexture;
-    ImGui_ImplSDLRenderer2_Data() { memset((void*)this, 0, sizeof(*this)); }
+    ImGui_ImplSDLRenderer2_Data()   { memset((void*)this, 0, sizeof(*this)); }
 };
 
 // Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
@@ -63,6 +64,7 @@ static ImGui_ImplSDLRenderer2_Data* ImGui_ImplSDLRenderer2_GetBackendData()
 bool ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
     IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");
 
@@ -72,7 +74,7 @@ bool ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer)
     io.BackendRendererName = "imgui_impl_sdlrenderer2";
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
 
-    bd->SDLRenderer = renderer;
+    bd->Renderer = renderer;
 
     return true;
 }
@@ -91,35 +93,31 @@ void ImGui_ImplSDLRenderer2_Shutdown()
     IM_DELETE(bd);
 }
 
-static void ImGui_ImplSDLRenderer2_SetupRenderState()
+static void ImGui_ImplSDLRenderer2_SetupRenderState(SDL_Renderer* renderer)
 {
-	ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
-
 	// Clear out any viewports and cliprect set by the user
     // FIXME: Technically speaking there are lots of other things we could backup/setup/restore during our render process.
-	SDL_RenderSetViewport(bd->SDLRenderer, nullptr);
-	SDL_RenderSetClipRect(bd->SDLRenderer, nullptr);
+	SDL_RenderSetViewport(renderer, nullptr);
+	SDL_RenderSetClipRect(renderer, nullptr);
 }
 
 void ImGui_ImplSDLRenderer2_NewFrame()
 {
     ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplSDLRenderer2_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDLRenderer2_Init()?");
 
     if (!bd->FontTexture)
         ImGui_ImplSDLRenderer2_CreateDeviceObjects();
 }
 
-void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data)
+void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)
 {
-	ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
-
 	// If there's a scale factor set by the user, use that instead
     // If the user has specified a scale factor to SDL_Renderer already via SDL_RenderSetScale(), SDL will scale whatever we pass
     // to SDL_RenderGeometryRaw() by that scale factor. In that case we don't want to be also scaling it ourselves here.
     float rsx = 1.0f;
 	float rsy = 1.0f;
-	SDL_RenderGetScale(bd->SDLRenderer, &rsx, &rsy);
+	SDL_RenderGetScale(renderer, &rsx, &rsy);
     ImVec2 render_scale;
 	render_scale.x = (rsx == 1.0f) ? draw_data->FramebufferScale.x : 1.0f;
 	render_scale.y = (rsy == 1.0f) ? draw_data->FramebufferScale.y : 1.0f;
@@ -138,16 +136,16 @@ void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data)
         SDL_Rect    ClipRect;
     };
     BackupSDLRendererState old = {};
-    old.ClipEnabled = SDL_RenderIsClipEnabled(bd->SDLRenderer) == SDL_TRUE;
-    SDL_RenderGetViewport(bd->SDLRenderer, &old.Viewport);
-    SDL_RenderGetClipRect(bd->SDLRenderer, &old.ClipRect);
+    old.ClipEnabled = SDL_RenderIsClipEnabled(renderer) == SDL_TRUE;
+    SDL_RenderGetViewport(renderer, &old.Viewport);
+    SDL_RenderGetClipRect(renderer, &old.ClipRect);
 
 	// Will project scissor/clipping rectangles into framebuffer space
 	ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
 	ImVec2 clip_scale = render_scale;
 
     // Render command lists
-    ImGui_ImplSDLRenderer2_SetupRenderState();
+    ImGui_ImplSDLRenderer2_SetupRenderState(renderer);
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
@@ -162,7 +160,7 @@ void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data)
                 // User callback, registered via ImDrawList::AddCallback()
                 // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
                 if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
-                    ImGui_ImplSDLRenderer2_SetupRenderState();
+                    ImGui_ImplSDLRenderer2_SetupRenderState(renderer);
                 else
                     pcmd->UserCallback(cmd_list, pcmd);
             }
@@ -179,7 +177,7 @@ void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data)
                     continue;
 
                 SDL_Rect r = { (int)(clip_min.x), (int)(clip_min.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y) };
-                SDL_RenderSetClipRect(bd->SDLRenderer, &r);
+                SDL_RenderSetClipRect(renderer, &r);
 
                 const float* xy = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, pos));
                 const float* uv = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, uv));
@@ -191,7 +189,7 @@ void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data)
 
                 // Bind texture, Draw
 				SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
-                SDL_RenderGeometryRaw(bd->SDLRenderer, tex,
+                SDL_RenderGeometryRaw(renderer, tex,
                     xy, (int)sizeof(ImDrawVert),
                     color, (int)sizeof(ImDrawVert),
                     uv, (int)sizeof(ImDrawVert),
@@ -202,8 +200,8 @@ void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data)
     }
 
     // Restore modified SDL_Renderer state
-    SDL_RenderSetViewport(bd->SDLRenderer, &old.Viewport);
-    SDL_RenderSetClipRect(bd->SDLRenderer, old.ClipEnabled ? &old.ClipRect : nullptr);
+    SDL_RenderSetViewport(renderer, &old.Viewport);
+    SDL_RenderSetClipRect(renderer, old.ClipEnabled ? &old.ClipRect : nullptr);
 }
 
 // Called by Init/NewFrame/Shutdown
@@ -219,7 +217,7 @@ bool ImGui_ImplSDLRenderer2_CreateFontsTexture()
 
     // Upload texture to graphics system
     // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
-    bd->FontTexture = SDL_CreateTexture(bd->SDLRenderer, SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STATIC, width, height);
+    bd->FontTexture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STATIC, width, height);
     if (bd->FontTexture == nullptr)
     {
         SDL_Log("error creating texture");

external/imgui/imgui/backends/imgui_impl_sdlrenderer2.h

@@ -25,10 +25,11 @@
 
 struct SDL_Renderer;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer);
 IMGUI_IMPL_API void     ImGui_ImplSDLRenderer2_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplSDLRenderer2_NewFrame();
-IMGUI_IMPL_API void     ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data);
+IMGUI_IMPL_API void     ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer);
 
 // Called by Init/NewFrame/Shutdown
 IMGUI_IMPL_API bool     ImGui_ImplSDLRenderer2_CreateFontsTexture();

external/imgui/imgui/backends/imgui_impl_sdlrenderer3.cpp

@@ -1,6 +1,8 @@
 // dear imgui: Renderer Backend for SDL_Renderer for SDL3
 // (Requires: SDL 3.0.0+)
 
+// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
+
 // Note how SDL_Renderer is an _optional_ component of SDL3.
 // For a multi-platform app consider using e.g. SDL+DirectX on Windows and SDL+OpenGL on Linux/OSX.
 // If your application will want to render any non trivial amount of graphics other than UI,
@@ -20,6 +22,9 @@
 // - Introduction, links and more at the top of imgui.cpp
 
 // CHANGELOG
+//  2024-07-01: Update for SDL3 api changes: SDL_RenderGeometryRaw() uint32 version was removed (SDL#9009).
+//  2024-05-14: *BREAKING CHANGE* ImGui_ImplSDLRenderer3_RenderDrawData() requires SDL_Renderer* passed as parameter.
+//  2024-02-12: Amend to query SDL_RenderViewportSet() and restore viewport accordingly.
 //  2023-05-30: Initial version.
 
 #include "imgui.h"
@@ -42,9 +47,11 @@
 // SDL_Renderer data
 struct ImGui_ImplSDLRenderer3_Data
 {
-    SDL_Renderer*   SDLRenderer;
-    SDL_Texture*    FontTexture;
-    ImGui_ImplSDLRenderer3_Data() { memset((void*)this, 0, sizeof(*this)); }
+    SDL_Renderer*           Renderer;       // Main viewport's renderer
+    SDL_Texture*            FontTexture;
+    ImVector<SDL_FColor>    ColorBuffer;
+
+    ImGui_ImplSDLRenderer3_Data()   { memset((void*)this, 0, sizeof(*this)); }
 };
 
 // Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
@@ -58,6 +65,7 @@ static ImGui_ImplSDLRenderer3_Data* ImGui_ImplSDLRenderer3_GetBackendData()
 bool ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
     IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");
 
@@ -67,7 +75,7 @@ bool ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer)
     io.BackendRendererName = "imgui_impl_sdlrenderer3";
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
 
-    bd->SDLRenderer = renderer;
+    bd->Renderer = renderer;
 
     return true;
 }
@@ -86,35 +94,51 @@ void ImGui_ImplSDLRenderer3_Shutdown()
     IM_DELETE(bd);
 }
 
-static void ImGui_ImplSDLRenderer3_SetupRenderState()
+static void ImGui_ImplSDLRenderer3_SetupRenderState(SDL_Renderer* renderer)
 {
-	ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
-
 	// Clear out any viewports and cliprect set by the user
     // FIXME: Technically speaking there are lots of other things we could backup/setup/restore during our render process.
-	SDL_SetRenderViewport(bd->SDLRenderer, nullptr);
-	SDL_SetRenderClipRect(bd->SDLRenderer, nullptr);
+	SDL_SetRenderViewport(renderer, nullptr);
+	SDL_SetRenderClipRect(renderer, nullptr);
 }
 
 void ImGui_ImplSDLRenderer3_NewFrame()
 {
     ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplSDLRenderer3_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDLRenderer3_Init()?");
 
     if (!bd->FontTexture)
         ImGui_ImplSDLRenderer3_CreateDeviceObjects();
 }
 
-void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data)
+// https://github.com/libsdl-org/SDL/issues/9009
+static int SDL_RenderGeometryRaw8BitColor(SDL_Renderer* renderer, ImVector<SDL_FColor>& colors_out, SDL_Texture* texture, const float* xy, int xy_stride, const SDL_Color* color, int color_stride, const float* uv, int uv_stride, int num_vertices, const void* indices, int num_indices, int size_indices)
 {
-	ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
+    const Uint8* color2 = (const Uint8*)color;
+    colors_out.resize(num_vertices);
+    SDL_FColor* color3 = colors_out.Data;
+    for (int i = 0; i < num_vertices; i++)
+    {
+        color3[i].r = color->r / 255.0f;
+        color3[i].g = color->g / 255.0f;
+        color3[i].b = color->b / 255.0f;
+        color3[i].a = color->a / 255.0f;
+        color2 += color_stride;
+        color = (const SDL_Color*)color2;
+    }
+    return SDL_RenderGeometryRaw(renderer, texture, xy, xy_stride, color3, sizeof(*color3), uv, uv_stride, num_vertices, indices, num_indices, size_indices);
+}
+
+void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)
+{
+    ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
 
 	// If there's a scale factor set by the user, use that instead
     // If the user has specified a scale factor to SDL_Renderer already via SDL_RenderSetScale(), SDL will scale whatever we pass
     // to SDL_RenderGeometryRaw() by that scale factor. In that case we don't want to be also scaling it ourselves here.
     float rsx = 1.0f;
 	float rsy = 1.0f;
-	SDL_GetRenderScale(bd->SDLRenderer, &rsx, &rsy);
+	SDL_GetRenderScale(renderer, &rsx, &rsy);
     ImVec2 render_scale;
 	render_scale.x = (rsx == 1.0f) ? draw_data->FramebufferScale.x : 1.0f;
 	render_scale.y = (rsy == 1.0f) ? draw_data->FramebufferScale.y : 1.0f;
@@ -129,20 +153,22 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data)
     struct BackupSDLRendererState
     {
         SDL_Rect    Viewport;
+        bool        ViewportEnabled;
         bool        ClipEnabled;
         SDL_Rect    ClipRect;
     };
     BackupSDLRendererState old = {};
-    old.ClipEnabled = SDL_RenderClipEnabled(bd->SDLRenderer) == SDL_TRUE;
-    SDL_GetRenderViewport(bd->SDLRenderer, &old.Viewport);
-    SDL_GetRenderClipRect(bd->SDLRenderer, &old.ClipRect);
+    old.ViewportEnabled = SDL_RenderViewportSet(renderer);
+    old.ClipEnabled = SDL_RenderClipEnabled(renderer);
+    SDL_GetRenderViewport(renderer, &old.Viewport);
+    SDL_GetRenderClipRect(renderer, &old.ClipRect);
 
 	// Will project scissor/clipping rectangles into framebuffer space
 	ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
 	ImVec2 clip_scale = render_scale;
 
     // Render command lists
-    ImGui_ImplSDLRenderer3_SetupRenderState();
+    ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
@@ -157,7 +183,7 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data)
                 // User callback, registered via ImDrawList::AddCallback()
                 // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
                 if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
-                    ImGui_ImplSDLRenderer3_SetupRenderState();
+                    ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
                 else
                     pcmd->UserCallback(cmd_list, pcmd);
             }
@@ -174,19 +200,15 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data)
                     continue;
 
                 SDL_Rect r = { (int)(clip_min.x), (int)(clip_min.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y) };
-                SDL_SetRenderClipRect(bd->SDLRenderer, &r);
+                SDL_SetRenderClipRect(renderer, &r);
 
                 const float* xy = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, pos));
                 const float* uv = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, uv));
-#if SDL_VERSION_ATLEAST(2,0,19)
                 const SDL_Color* color = (const SDL_Color*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.19+
-#else
-                const int* color = (const int*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.17 and 2.0.18
-#endif
 
                 // Bind texture, Draw
 				SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
-                SDL_RenderGeometryRaw(bd->SDLRenderer, tex,
+                SDL_RenderGeometryRaw8BitColor(renderer, bd->ColorBuffer, tex,
                     xy, (int)sizeof(ImDrawVert),
                     color, (int)sizeof(ImDrawVert),
                     uv, (int)sizeof(ImDrawVert),
@@ -197,8 +219,8 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data)
     }
 
     // Restore modified SDL_Renderer state
-    SDL_SetRenderViewport(bd->SDLRenderer, &old.Viewport);
-    SDL_SetRenderClipRect(bd->SDLRenderer, old.ClipEnabled ? &old.ClipRect : nullptr);
+    SDL_SetRenderViewport(renderer, old.ViewportEnabled ? &old.Viewport : nullptr);
+    SDL_SetRenderClipRect(renderer, old.ClipEnabled ? &old.ClipRect : nullptr);
 }
 
 // Called by Init/NewFrame/Shutdown
@@ -214,7 +236,7 @@ bool ImGui_ImplSDLRenderer3_CreateFontsTexture()
 
     // Upload texture to graphics system
     // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
-    bd->FontTexture = SDL_CreateTexture(bd->SDLRenderer, SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STATIC, width, height);
+    bd->FontTexture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STATIC, width, height);
     if (bd->FontTexture == nullptr)
     {
         SDL_Log("error creating texture");

external/imgui/imgui/backends/imgui_impl_sdlrenderer3.h

@@ -1,6 +1,8 @@
 // dear imgui: Renderer Backend for SDL_Renderer for SDL3
 // (Requires: SDL 3.0.0+)
 
+// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
+
 // Note how SDL_Renderer is an _optional_ component of SDL3.
 // For a multi-platform app consider using e.g. SDL+DirectX on Windows and SDL+OpenGL on Linux/OSX.
 // If your application will want to render any non trivial amount of graphics other than UI,
@@ -25,10 +27,11 @@
 
 struct SDL_Renderer;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer);
 IMGUI_IMPL_API void     ImGui_ImplSDLRenderer3_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplSDLRenderer3_NewFrame();
-IMGUI_IMPL_API void     ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data);
+IMGUI_IMPL_API void     ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer);
 
 // Called by Init/NewFrame/Shutdown
 IMGUI_IMPL_API bool     ImGui_ImplSDLRenderer3_CreateFontsTexture();

external/imgui/imgui/backends/imgui_impl_vulkan.cpp

@@ -33,18 +33,23 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-04-19: Vulkan: Added convenience support for Volk via IMGUI_IMPL_VULKAN_USE_VOLK define (you can also use IMGUI_IMPL_VULKAN_NO_PROTOTYPES + wrap Volk via ImGui_ImplVulkan_LoadFunctions().)
+//  2024-02-14: *BREAKING CHANGE*: Moved RenderPass parameter from ImGui_ImplVulkan_Init() function to ImGui_ImplVulkan_InitInfo structure. Not required when using dynamic rendering.
+//  2024-02-12: *BREAKING CHANGE*: Dynamic rendering now require filling PipelineRenderingCreateInfo structure.
+//  2024-01-19: Vulkan: Fixed vkAcquireNextImageKHR() validation errors in VulkanSDK 1.3.275 by allocating one extra semaphore than in-flight frames. (#7236)
+//  2024-01-11: Vulkan: Fixed vkMapMemory() calls unnecessarily using full buffer size (#3957). Fixed MinAllocationSize handing (#7189).
 //  2024-01-03: Vulkan: Added MinAllocationSize field in ImGui_ImplVulkan_InitInfo to workaround zealous "best practice" validation layer. (#7189, #4238)
-//  2024-01-03: Vulkan: Stoped creating command pools with VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT as we don't reset them.
+//  2024-01-03: Vulkan: Stopped creating command pools with VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT as we don't reset them.
 //  2023-11-29: Vulkan: Fixed mismatching allocator passed to vkCreateCommandPool() vs vkDestroyCommandPool(). (#7075)
 //  2023-11-10: *BREAKING CHANGE*: Removed parameter from ImGui_ImplVulkan_CreateFontsTexture(): backend now creates its own command-buffer to upload fonts.
-//              *BREAKING CHANGE*: Removed ImGui_ImplVulkan_DestroyFontUploadObjects() which is now unecessary as we create and destroy those objects in the backend.
+//              *BREAKING CHANGE*: Removed ImGui_ImplVulkan_DestroyFontUploadObjects() which is now unnecessary as we create and destroy those objects in the backend.
 //              ImGui_ImplVulkan_CreateFontsTexture() is automatically called by NewFrame() the first time.
 //              You can call ImGui_ImplVulkan_CreateFontsTexture() again to recreate the font atlas texture.
 //              Added ImGui_ImplVulkan_DestroyFontsTexture() but you probably never need to call this.
 //  2023-07-04: Vulkan: Added optional support for VK_KHR_dynamic_rendering. User needs to set init_info->UseDynamicRendering = true and init_info->ColorAttachmentFormat.
 //  2023-01-02: Vulkan: Fixed sampler passed to ImGui_ImplVulkan_AddTexture() not being honored + removed a bunch of duplicate code.
 //  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
-//  2022-10-04: Vulkan: Added experimental ImGui_ImplVulkan_RemoveTexture() for api symetry. (#914, #5738).
+//  2022-10-04: Vulkan: Added experimental ImGui_ImplVulkan_RemoveTexture() for api symmetry. (#914, #5738).
 //  2022-01-20: Vulkan: Added support for ImTextureID as VkDescriptorSet. User need to call ImGui_ImplVulkan_AddTexture(). Building for 32-bit targets requires '#define ImTextureID ImU64'. (#914).
 //  2021-10-15: Vulkan: Call vkCmdSetScissor() at the end of render a full-viewport to reduce likehood of issues with people using VK_DYNAMIC_STATE_SCISSOR in their app without calling vkCmdSetScissor() explicitly every frame.
 //  2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
@@ -91,25 +96,26 @@
 #endif
 
 // Forward Declarations
-struct ImGui_ImplVulkanH_FrameRenderBuffers;
-struct ImGui_ImplVulkanH_WindowRenderBuffers;
+struct ImGui_ImplVulkan_FrameRenderBuffers;
+struct ImGui_ImplVulkan_WindowRenderBuffers;
 bool ImGui_ImplVulkan_CreateDeviceObjects();
 void ImGui_ImplVulkan_DestroyDeviceObjects();
+void ImGui_ImplVulkan_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkan_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
+void ImGui_ImplVulkan_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkan_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
 void ImGui_ImplVulkanH_DestroyFrame(VkDevice device, ImGui_ImplVulkanH_Frame* fd, const VkAllocationCallbacks* allocator);
 void ImGui_ImplVulkanH_DestroyFrameSemaphores(VkDevice device, ImGui_ImplVulkanH_FrameSemaphores* fsd, const VkAllocationCallbacks* allocator);
-void ImGui_ImplVulkanH_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkanH_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
-void ImGui_ImplVulkanH_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkanH_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
 void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
 void ImGui_ImplVulkanH_CreateWindowCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator);
 
 // Vulkan prototypes for use with custom loaders
 // (see description of IMGUI_IMPL_VULKAN_NO_PROTOTYPES in imgui_impl_vulkan.h
-#ifdef VK_NO_PROTOTYPES
+#if defined(VK_NO_PROTOTYPES) && !defined(VOLK_H_)
+#define IMGUI_IMPL_VULKAN_USE_LOADER
 static bool g_FunctionsLoaded = false;
 #else
 static bool g_FunctionsLoaded = true;
 #endif
-#ifdef VK_NO_PROTOTYPES
+#ifdef IMGUI_IMPL_VULKAN_USE_LOADER
 #define IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_MAP_MACRO) \
     IMGUI_VULKAN_FUNC_MAP_MACRO(vkAllocateCommandBuffers) \
     IMGUI_VULKAN_FUNC_MAP_MACRO(vkAllocateDescriptorSets) \
@@ -180,17 +186,16 @@ static bool g_FunctionsLoaded = true;
 #define IMGUI_VULKAN_FUNC_DEF(func) static PFN_##func func;
 IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_DEF)
 #undef IMGUI_VULKAN_FUNC_DEF
-#endif // VK_NO_PROTOTYPES
+#endif // IMGUI_IMPL_VULKAN_USE_LOADER
 
-#if defined(VK_VERSION_1_3) || defined(VK_KHR_dynamic_rendering)
-#define IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
+#ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
 static PFN_vkCmdBeginRenderingKHR   ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR;
 static PFN_vkCmdEndRenderingKHR     ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR;
 #endif
 
 // Reusable buffers used for rendering 1 current in-flight frame, for ImGui_ImplVulkan_RenderDrawData()
 // [Please zero-clear before use!]
-struct ImGui_ImplVulkanH_FrameRenderBuffers
+struct ImGui_ImplVulkan_FrameRenderBuffers
 {
     VkDeviceMemory      VertexBufferMemory;
     VkDeviceMemory      IndexBufferMemory;
@@ -202,24 +207,22 @@ struct ImGui_ImplVulkanH_FrameRenderBuffers
 
 // Each viewport will hold 1 ImGui_ImplVulkanH_WindowRenderBuffers
 // [Please zero-clear before use!]
-struct ImGui_ImplVulkanH_WindowRenderBuffers
+struct ImGui_ImplVulkan_WindowRenderBuffers
 {
     uint32_t            Index;
     uint32_t            Count;
-    ImGui_ImplVulkanH_FrameRenderBuffers* FrameRenderBuffers;
+    ImGui_ImplVulkan_FrameRenderBuffers* FrameRenderBuffers;
 };
 
 // Vulkan data
 struct ImGui_ImplVulkan_Data
 {
     ImGui_ImplVulkan_InitInfo   VulkanInitInfo;
-    VkRenderPass                RenderPass;
     VkDeviceSize                BufferMemoryAlignment;
     VkPipelineCreateFlags       PipelineCreateFlags;
     VkDescriptorSetLayout       DescriptorSetLayout;
     VkPipelineLayout            PipelineLayout;
     VkPipeline                  Pipeline;
-    uint32_t                    Subpass;
     VkShaderModule              ShaderModuleVert;
     VkShaderModule              ShaderModuleFrag;
 
@@ -233,7 +236,7 @@ struct ImGui_ImplVulkan_Data
     VkCommandBuffer             FontCommandBuffer;
 
     // Render buffers for main window
-    ImGui_ImplVulkanH_WindowRenderBuffers MainWindowRenderBuffers;
+    ImGui_ImplVulkan_WindowRenderBuffers MainWindowRenderBuffers;
 
     ImGui_ImplVulkan_Data()
     {
@@ -385,7 +388,13 @@ static void check_vk_result(VkResult err)
         v->CheckVkResultFn(err);
 }
 
-static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& p_buffer_size, size_t new_size, VkBufferUsageFlagBits usage)
+// Same as IM_MEMALIGN(). 'alignment' must be a power of two.
+static inline VkDeviceSize AlignBufferSize(VkDeviceSize size, VkDeviceSize alignment)
+{
+    return (size + alignment - 1) & ~(alignment - 1);
+}
+
+static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& buffer_size, size_t new_size, VkBufferUsageFlagBits usage)
 {
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
     ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
@@ -395,10 +404,10 @@ static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory
     if (buffer_memory != VK_NULL_HANDLE)
         vkFreeMemory(v->Device, buffer_memory, v->Allocator);
 
-    VkDeviceSize vertex_buffer_size_aligned = ((new_size - 1) / bd->BufferMemoryAlignment + 1) * bd->BufferMemoryAlignment;
+    VkDeviceSize buffer_size_aligned = AlignBufferSize(IM_MAX(v->MinAllocationSize, new_size), bd->BufferMemoryAlignment);
     VkBufferCreateInfo buffer_info = {};
     buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
-    buffer_info.size = vertex_buffer_size_aligned;
+    buffer_info.size = buffer_size_aligned;
     buffer_info.usage = usage;
     buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
     err = vkCreateBuffer(v->Device, &buffer_info, v->Allocator, &buffer);
@@ -407,20 +416,19 @@ static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory
     VkMemoryRequirements req;
     vkGetBufferMemoryRequirements(v->Device, buffer, &req);
     bd->BufferMemoryAlignment = (bd->BufferMemoryAlignment > req.alignment) ? bd->BufferMemoryAlignment : req.alignment;
-    VkDeviceSize size = IM_MAX(v->MinAllocationSize, req.size);
     VkMemoryAllocateInfo alloc_info = {};
     alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
-    alloc_info.allocationSize = size;
+    alloc_info.allocationSize = req.size;
     alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
     err = vkAllocateMemory(v->Device, &alloc_info, v->Allocator, &buffer_memory);
     check_vk_result(err);
 
     err = vkBindBufferMemory(v->Device, buffer, buffer_memory, 0);
     check_vk_result(err);
-    p_buffer_size = size;
+    buffer_size = buffer_size_aligned;
 }
 
-static void ImGui_ImplVulkan_SetupRenderState(ImDrawData* draw_data, VkPipeline pipeline, VkCommandBuffer command_buffer, ImGui_ImplVulkanH_FrameRenderBuffers* rb, int fb_width, int fb_height)
+static void ImGui_ImplVulkan_SetupRenderState(ImDrawData* draw_data, VkPipeline pipeline, VkCommandBuffer command_buffer, ImGui_ImplVulkan_FrameRenderBuffers* rb, int fb_width, int fb_height)
 {
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
 
@@ -479,23 +487,23 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
         pipeline = bd->Pipeline;
 
     // Allocate array to store enough vertex/index buffers
-    ImGui_ImplVulkanH_WindowRenderBuffers* wrb = &bd->MainWindowRenderBuffers;
+    ImGui_ImplVulkan_WindowRenderBuffers* wrb = &bd->MainWindowRenderBuffers;
     if (wrb->FrameRenderBuffers == nullptr)
     {
         wrb->Index = 0;
         wrb->Count = v->ImageCount;
-        wrb->FrameRenderBuffers = (ImGui_ImplVulkanH_FrameRenderBuffers*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_FrameRenderBuffers) * wrb->Count);
-        memset(wrb->FrameRenderBuffers, 0, sizeof(ImGui_ImplVulkanH_FrameRenderBuffers) * wrb->Count);
+        wrb->FrameRenderBuffers = (ImGui_ImplVulkan_FrameRenderBuffers*)IM_ALLOC(sizeof(ImGui_ImplVulkan_FrameRenderBuffers) * wrb->Count);
+        memset(wrb->FrameRenderBuffers, 0, sizeof(ImGui_ImplVulkan_FrameRenderBuffers) * wrb->Count);
     }
     IM_ASSERT(wrb->Count == v->ImageCount);
     wrb->Index = (wrb->Index + 1) % wrb->Count;
-    ImGui_ImplVulkanH_FrameRenderBuffers* rb = &wrb->FrameRenderBuffers[wrb->Index];
+    ImGui_ImplVulkan_FrameRenderBuffers* rb = &wrb->FrameRenderBuffers[wrb->Index];
 
     if (draw_data->TotalVtxCount > 0)
     {
         // Create or resize the vertex/index buffers
-        size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
-        size_t index_size = draw_data->TotalIdxCount * sizeof(ImDrawIdx);
+        size_t vertex_size = AlignBufferSize(draw_data->TotalVtxCount * sizeof(ImDrawVert), bd->BufferMemoryAlignment);
+        size_t index_size = AlignBufferSize(draw_data->TotalIdxCount * sizeof(ImDrawIdx), bd->BufferMemoryAlignment);
         if (rb->VertexBuffer == VK_NULL_HANDLE || rb->VertexBufferSize < vertex_size)
             CreateOrResizeBuffer(rb->VertexBuffer, rb->VertexBufferMemory, rb->VertexBufferSize, vertex_size, VK_BUFFER_USAGE_VERTEX_BUFFER_BIT);
         if (rb->IndexBuffer == VK_NULL_HANDLE || rb->IndexBufferSize < index_size)
@@ -504,9 +512,9 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
         // Upload vertex/index data into a single contiguous GPU buffer
         ImDrawVert* vtx_dst = nullptr;
         ImDrawIdx* idx_dst = nullptr;
-        VkResult err = vkMapMemory(v->Device, rb->VertexBufferMemory, 0, rb->VertexBufferSize, 0, (void**)&vtx_dst);
+        VkResult err = vkMapMemory(v->Device, rb->VertexBufferMemory, 0, vertex_size, 0, (void**)&vtx_dst);
         check_vk_result(err);
-        err = vkMapMemory(v->Device, rb->IndexBufferMemory, 0, rb->IndexBufferSize, 0, (void**)&idx_dst);
+        err = vkMapMemory(v->Device, rb->IndexBufferMemory, 0, index_size, 0, (void**)&idx_dst);
         check_vk_result(err);
         for (int n = 0; n < draw_data->CmdListsCount; n++)
         {
@@ -946,13 +954,11 @@ static void ImGui_ImplVulkan_CreatePipeline(VkDevice device, const VkAllocationC
     info.subpass = subpass;
 
 #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
-    VkPipelineRenderingCreateInfoKHR pipelineRenderingCreateInfo = {};
-    pipelineRenderingCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR;
-    pipelineRenderingCreateInfo.colorAttachmentCount = 1;
-    pipelineRenderingCreateInfo.pColorAttachmentFormats = &bd->VulkanInitInfo.ColorAttachmentFormat;
     if (bd->VulkanInitInfo.UseDynamicRendering)
     {
-        info.pNext = &pipelineRenderingCreateInfo;
+        IM_ASSERT(bd->VulkanInitInfo.PipelineRenderingCreateInfo.sType == VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR && "PipelineRenderingCreateInfo sType must be VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR");
+        IM_ASSERT(bd->VulkanInitInfo.PipelineRenderingCreateInfo.pNext == nullptr && "PipelineRenderingCreateInfo pNext must be NULL");
+        info.pNext = &bd->VulkanInitInfo.PipelineRenderingCreateInfo;
         info.renderPass = VK_NULL_HANDLE; // Just make sure it's actually nullptr.
     }
 #endif
@@ -1017,7 +1023,7 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
         check_vk_result(err);
     }
 
-    ImGui_ImplVulkan_CreatePipeline(v->Device, v->Allocator, v->PipelineCache, bd->RenderPass, v->MSAASamples, &bd->Pipeline, bd->Subpass);
+    ImGui_ImplVulkan_CreatePipeline(v->Device, v->Allocator, v->PipelineCache, v->RenderPass, v->MSAASamples, &bd->Pipeline, v->Subpass);
 
     return true;
 }
@@ -1026,7 +1032,7 @@ void    ImGui_ImplVulkan_DestroyDeviceObjects()
 {
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
     ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
-    ImGui_ImplVulkanH_DestroyWindowRenderBuffers(v->Device, &bd->MainWindowRenderBuffers, v->Allocator);
+    ImGui_ImplVulkan_DestroyWindowRenderBuffers(v->Device, &bd->MainWindowRenderBuffers, v->Allocator);
     ImGui_ImplVulkan_DestroyFontsTexture();
 
     if (bd->FontCommandBuffer)    { vkFreeCommandBuffers(v->Device, bd->FontCommandPool, 1, &bd->FontCommandBuffer); bd->FontCommandBuffer = VK_NULL_HANDLE; }
@@ -1044,8 +1050,8 @@ bool    ImGui_ImplVulkan_LoadFunctions(PFN_vkVoidFunction(*loader_func)(const ch
     // Load function pointers
     // You can use the default Vulkan loader using:
     //      ImGui_ImplVulkan_LoadFunctions([](const char* function_name, void*) { return vkGetInstanceProcAddr(your_vk_isntance, function_name); });
-    // But this would be equivalent to not setting VK_NO_PROTOTYPES.
-#ifdef VK_NO_PROTOTYPES
+    // But this would be roughly equivalent to not setting VK_NO_PROTOTYPES.
+#ifdef IMGUI_IMPL_VULKAN_USE_LOADER
 #define IMGUI_VULKAN_FUNC_LOAD(func) \
     func = reinterpret_cast<decltype(func)>(loader_func(#func, user_data)); \
     if (func == nullptr)   \
@@ -1067,14 +1073,14 @@ bool    ImGui_ImplVulkan_LoadFunctions(PFN_vkVoidFunction(*loader_func)(const ch
     return true;
 }
 
-bool    ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass)
+bool    ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info)
 {
     IM_ASSERT(g_FunctionsLoaded && "Need to call ImGui_ImplVulkan_LoadFunctions() if IMGUI_IMPL_VULKAN_NO_PROTOTYPES or VK_NO_PROTOTYPES are set!");
 
     if (info->UseDynamicRendering)
     {
 #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
-#ifndef VK_NO_PROTOTYPES
+#ifndef IMGUI_IMPL_VULKAN_USE_LOADER
         ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR = reinterpret_cast<PFN_vkCmdBeginRenderingKHR>(vkGetInstanceProcAddr(info->Instance, "vkCmdBeginRenderingKHR"));
         ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR = reinterpret_cast<PFN_vkCmdEndRenderingKHR>(vkGetInstanceProcAddr(info->Instance, "vkCmdEndRenderingKHR"));
 #endif
@@ -1086,6 +1092,7 @@ bool    ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass rend
     }
 
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
     // Setup backend capabilities flags
@@ -1102,11 +1109,9 @@ bool    ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass rend
     IM_ASSERT(info->MinImageCount >= 2);
     IM_ASSERT(info->ImageCount >= info->MinImageCount);
     if (info->UseDynamicRendering == false)
-        IM_ASSERT(render_pass != VK_NULL_HANDLE);
+        IM_ASSERT(info->RenderPass != VK_NULL_HANDLE);
 
     bd->VulkanInitInfo = *info;
-    bd->RenderPass = render_pass;
-    bd->Subpass = info->Subpass;
 
     ImGui_ImplVulkan_CreateDeviceObjects();
 
@@ -1129,7 +1134,7 @@ void ImGui_ImplVulkan_Shutdown()
 void ImGui_ImplVulkan_NewFrame()
 {
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplVulkan_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplVulkan_Init()?");
 
     if (!bd->FontDescriptorSet)
         ImGui_ImplVulkan_CreateFontsTexture();
@@ -1145,7 +1150,7 @@ void ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count)
     ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
     VkResult err = vkDeviceWaitIdle(v->Device);
     check_vk_result(err);
-    ImGui_ImplVulkanH_DestroyWindowRenderBuffers(v->Device, &bd->MainWindowRenderBuffers, v->Allocator);
+    ImGui_ImplVulkan_DestroyWindowRenderBuffers(v->Device, &bd->MainWindowRenderBuffers, v->Allocator);
     bd->VulkanInitInfo.MinImageCount = min_image_count;
 }
 
@@ -1192,6 +1197,26 @@ void ImGui_ImplVulkan_RemoveTexture(VkDescriptorSet descriptor_set)
     vkFreeDescriptorSets(v->Device, v->DescriptorPool, 1, &descriptor_set);
 }
 
+void ImGui_ImplVulkan_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkan_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
+{
+    if (buffers->VertexBuffer) { vkDestroyBuffer(device, buffers->VertexBuffer, allocator); buffers->VertexBuffer = VK_NULL_HANDLE; }
+    if (buffers->VertexBufferMemory) { vkFreeMemory(device, buffers->VertexBufferMemory, allocator); buffers->VertexBufferMemory = VK_NULL_HANDLE; }
+    if (buffers->IndexBuffer) { vkDestroyBuffer(device, buffers->IndexBuffer, allocator); buffers->IndexBuffer = VK_NULL_HANDLE; }
+    if (buffers->IndexBufferMemory) { vkFreeMemory(device, buffers->IndexBufferMemory, allocator); buffers->IndexBufferMemory = VK_NULL_HANDLE; }
+    buffers->VertexBufferSize = 0;
+    buffers->IndexBufferSize = 0;
+}
+
+void ImGui_ImplVulkan_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkan_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
+{
+    for (uint32_t n = 0; n < buffers->Count; n++)
+        ImGui_ImplVulkan_DestroyFrameRenderBuffers(device, &buffers->FrameRenderBuffers[n], allocator);
+    IM_FREE(buffers->FrameRenderBuffers);
+    buffers->FrameRenderBuffers = nullptr;
+    buffers->Index = 0;
+    buffers->Count = 0;
+}
+
 //-------------------------------------------------------------------------
 // Internal / Miscellaneous Vulkan Helpers
 // (Used by example's main.cpp. Used by multi-viewport features. PROBABLY NOT used by your own app.)
@@ -1279,15 +1304,13 @@ VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_d
 void ImGui_ImplVulkanH_CreateWindowCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator)
 {
     IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE);
-    (void)physical_device;
-    (void)allocator;
+    IM_UNUSED(physical_device);
 
     // Create Command Buffers
     VkResult err;
     for (uint32_t i = 0; i < wd->ImageCount; i++)
     {
         ImGui_ImplVulkanH_Frame* fd = &wd->Frames[i];
-        ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[i];
         {
             VkCommandPoolCreateInfo info = {};
             info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
@@ -1312,6 +1335,11 @@ void ImGui_ImplVulkanH_CreateWindowCommandBuffers(VkPhysicalDevice physical_devi
             err = vkCreateFence(device, &info, allocator, &fd->Fence);
             check_vk_result(err);
         }
+    }
+
+    for (uint32_t i = 0; i < wd->SemaphoreCount; i++)
+    {
+        ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[i];
         {
             VkSemaphoreCreateInfo info = {};
             info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
@@ -1347,10 +1375,9 @@ void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, V
     // We don't use ImGui_ImplVulkanH_DestroyWindow() because we want to preserve the old swapchain to create the new one.
     // Destroy old Framebuffer
     for (uint32_t i = 0; i < wd->ImageCount; i++)
-    {
         ImGui_ImplVulkanH_DestroyFrame(device, &wd->Frames[i], allocator);
+    for (uint32_t i = 0; i < wd->SemaphoreCount; i++)
         ImGui_ImplVulkanH_DestroyFrameSemaphores(device, &wd->FrameSemaphores[i], allocator);
-    }
     IM_FREE(wd->Frames);
     IM_FREE(wd->FrameSemaphores);
     wd->Frames = nullptr;
@@ -1409,11 +1436,12 @@ void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, V
         err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->ImageCount, backbuffers);
         check_vk_result(err);
 
-        IM_ASSERT(wd->Frames == nullptr);
+        IM_ASSERT(wd->Frames == nullptr && wd->FrameSemaphores == nullptr);
+        wd->SemaphoreCount = wd->ImageCount + 1;
         wd->Frames = (ImGui_ImplVulkanH_Frame*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_Frame) * wd->ImageCount);
-        wd->FrameSemaphores = (ImGui_ImplVulkanH_FrameSemaphores*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_FrameSemaphores) * wd->ImageCount);
+        wd->FrameSemaphores = (ImGui_ImplVulkanH_FrameSemaphores*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_FrameSemaphores) * wd->SemaphoreCount);
         memset(wd->Frames, 0, sizeof(wd->Frames[0]) * wd->ImageCount);
-        memset(wd->FrameSemaphores, 0, sizeof(wd->FrameSemaphores[0]) * wd->ImageCount);
+        memset(wd->FrameSemaphores, 0, sizeof(wd->FrameSemaphores[0]) * wd->SemaphoreCount);
         for (uint32_t i = 0; i < wd->ImageCount; i++)
             wd->Frames[i].Backbuffer = backbuffers[i];
     }
@@ -1459,7 +1487,7 @@ void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, V
 
         // We do not create a pipeline by default as this is also used by examples' main.cpp,
         // but secondary viewport in multi-viewport mode may want to create one with:
-        //ImGui_ImplVulkan_CreatePipeline(device, allocator, VK_NULL_HANDLE, wd->RenderPass, VK_SAMPLE_COUNT_1_BIT, &wd->Pipeline, bd->Subpass);
+        //ImGui_ImplVulkan_CreatePipeline(device, allocator, VK_NULL_HANDLE, wd->RenderPass, VK_SAMPLE_COUNT_1_BIT, &wd->Pipeline, v->Subpass);
     }
 
     // Create The Image Views
@@ -1520,10 +1548,9 @@ void ImGui_ImplVulkanH_DestroyWindow(VkInstance instance, VkDevice device, ImGui
     //vkQueueWaitIdle(bd->Queue);
 
     for (uint32_t i = 0; i < wd->ImageCount; i++)
-    {
         ImGui_ImplVulkanH_DestroyFrame(device, &wd->Frames[i], allocator);
+    for (uint32_t i = 0; i < wd->SemaphoreCount; i++)
         ImGui_ImplVulkanH_DestroyFrameSemaphores(device, &wd->FrameSemaphores[i], allocator);
-    }
     IM_FREE(wd->Frames);
     IM_FREE(wd->FrameSemaphores);
     wd->Frames = nullptr;
@@ -1556,26 +1583,6 @@ void ImGui_ImplVulkanH_DestroyFrameSemaphores(VkDevice device, ImGui_ImplVulkanH
     fsd->ImageAcquiredSemaphore = fsd->RenderCompleteSemaphore = VK_NULL_HANDLE;
 }
 
-void ImGui_ImplVulkanH_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkanH_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
-{
-    if (buffers->VertexBuffer) { vkDestroyBuffer(device, buffers->VertexBuffer, allocator); buffers->VertexBuffer = VK_NULL_HANDLE; }
-    if (buffers->VertexBufferMemory) { vkFreeMemory(device, buffers->VertexBufferMemory, allocator); buffers->VertexBufferMemory = VK_NULL_HANDLE; }
-    if (buffers->IndexBuffer) { vkDestroyBuffer(device, buffers->IndexBuffer, allocator); buffers->IndexBuffer = VK_NULL_HANDLE; }
-    if (buffers->IndexBufferMemory) { vkFreeMemory(device, buffers->IndexBufferMemory, allocator); buffers->IndexBufferMemory = VK_NULL_HANDLE; }
-    buffers->VertexBufferSize = 0;
-    buffers->IndexBufferSize = 0;
-}
-
-void ImGui_ImplVulkanH_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkanH_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
-{
-    for (uint32_t n = 0; n < buffers->Count; n++)
-        ImGui_ImplVulkanH_DestroyFrameRenderBuffers(device, &buffers->FrameRenderBuffers[n], allocator);
-    IM_FREE(buffers->FrameRenderBuffers);
-    buffers->FrameRenderBuffers = nullptr;
-    buffers->Index = 0;
-    buffers->Count = 0;
-}
-
 //-----------------------------------------------------------------------------
 
 #endif // #ifndef IMGUI_DISABLE

external/imgui/imgui/backends/imgui_impl_vulkan.h

@@ -42,13 +42,31 @@
 // If you have no idea what this is, leave it alone!
 //#define IMGUI_IMPL_VULKAN_NO_PROTOTYPES
 
-// Vulkan includes
+// Convenience support for Volk
+// (you can also technically use IMGUI_IMPL_VULKAN_NO_PROTOTYPES + wrap Volk via ImGui_ImplVulkan_LoadFunctions().)
+//#define IMGUI_IMPL_VULKAN_USE_VOLK
+
 #if defined(IMGUI_IMPL_VULKAN_NO_PROTOTYPES) && !defined(VK_NO_PROTOTYPES)
 #define VK_NO_PROTOTYPES
 #endif
+#if defined(VK_USE_PLATFORM_WIN32_KHR) && !defined(NOMINMAX)
+#define NOMINMAX
+#endif
+
+// Vulkan includes
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+#include <volk.h>
+#else
 #include <vulkan/vulkan.h>
+#endif
+#if defined(VK_VERSION_1_3) || defined(VK_KHR_dynamic_rendering)
+#define IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
+#endif
 
 // Initialization data, for ImGui_ImplVulkan_Init()
+// - VkDescriptorPool should be created with VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT,
+//   and must contain a pool size large enough to hold an ImGui VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER descriptor.
+// - When using dynamic rendering, set UseDynamicRendering=true and fill PipelineRenderingCreateInfo structure.
 // [Please zero-clear before use!]
 struct ImGui_ImplVulkan_InitInfo
 {
@@ -57,25 +75,31 @@ struct ImGui_ImplVulkan_InitInfo
     VkDevice                        Device;
     uint32_t                        QueueFamily;
     VkQueue                         Queue;
+    VkDescriptorPool                DescriptorPool;               // See requirements in note above
+    VkRenderPass                    RenderPass;                   // Ignored if using dynamic rendering
+    uint32_t                        MinImageCount;                // >= 2
+    uint32_t                        ImageCount;                   // >= MinImageCount
+    VkSampleCountFlagBits           MSAASamples;                  // 0 defaults to VK_SAMPLE_COUNT_1_BIT
+
+    // (Optional)
     VkPipelineCache                 PipelineCache;
-    VkDescriptorPool                DescriptorPool;
     uint32_t                        Subpass;
-    uint32_t                        MinImageCount;          // >= 2
-    uint32_t                        ImageCount;             // >= MinImageCount
-    VkSampleCountFlagBits           MSAASamples;            // >= VK_SAMPLE_COUNT_1_BIT (0 -> default to VK_SAMPLE_COUNT_1_BIT)
 
-    // Dynamic Rendering (Optional)
-    bool                            UseDynamicRendering;    // Need to explicitly enable VK_KHR_dynamic_rendering extension to use this, even for Vulkan 1.3.
-    VkFormat                        ColorAttachmentFormat;  // Required for dynamic rendering
+    // (Optional) Dynamic Rendering
+    // Need to explicitly enable VK_KHR_dynamic_rendering extension to use this, even for Vulkan 1.3.
+    bool                            UseDynamicRendering;
+#ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
+    VkPipelineRenderingCreateInfoKHR PipelineRenderingCreateInfo;
+#endif
 
-    // Allocation, Debugging
+    // (Optional) Allocation, Debugging
     const VkAllocationCallbacks*    Allocator;
     void                            (*CheckVkResultFn)(VkResult err);
     VkDeviceSize                    MinAllocationSize;      // Minimum allocation size. Set to 1024*1024 to satisfy zealous best practices validation layer and waste a little memory.
 };
 
-// Called by user code
-IMGUI_IMPL_API bool         ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass);
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+IMGUI_IMPL_API bool         ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info);
 IMGUI_IMPL_API void         ImGui_ImplVulkan_Shutdown();
 IMGUI_IMPL_API void         ImGui_ImplVulkan_NewFrame();
 IMGUI_IMPL_API void         ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline = VK_NULL_HANDLE);
@@ -155,6 +179,7 @@ struct ImGui_ImplVulkanH_Window
     VkClearValue        ClearValue;
     uint32_t            FrameIndex;             // Current frame being rendered to (0 <= FrameIndex < FrameInFlightCount)
     uint32_t            ImageCount;             // Number of simultaneous in-flight frames (returned by vkGetSwapchainImagesKHR, usually derived from min_image_count)
+    uint32_t            SemaphoreCount;         // Number of simultaneous in-flight frames + 1, to be able to use it in vkAcquireNextImageKHR
     uint32_t            SemaphoreIndex;         // Current set of swapchain wait semaphores we're using (needs to be distinct from per frame data)
     ImGui_ImplVulkanH_Frame*            Frames;
     ImGui_ImplVulkanH_FrameSemaphores*  FrameSemaphores;

external/imgui/imgui/backends/imgui_impl_wgpu.cpp

@@ -16,6 +16,11 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-09-16: Added support for optional IMGUI_IMPL_WEBGPU_BACKEND_DAWN / IMGUI_IMPL_WEBGPU_BACKEND_WGPU define to handle ever-changing native implementations. (#7977)
+//  2024-01-22: Added configurable PipelineMultisampleState struct. (#7240)
+//  2024-01-22: (Breaking) ImGui_ImplWGPU_Init() now takes a ImGui_ImplWGPU_InitInfo structure instead of variety of parameters, allowing for easier further changes.
+//  2024-01-22: Fixed pipeline layout leak. (#7245)
+//  2024-01-17: Explicitly fill all of WGPUDepthStencilState since standard removed defaults.
 //  2023-07-13: Use WGPUShaderModuleWGSLDescriptor's code instead of source. use WGPUMipmapFilterMode_Linear instead of WGPUFilterMode_Linear. (#6602)
 //  2023-04-11: Align buffer sizes. Use WGSL shaders instead of precompiled SPIR-V.
 //  2023-04-11: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
@@ -31,6 +36,18 @@
 //  2021-02-18: Change blending equation to preserve alpha in output buffer.
 //  2021-01-28: Initial version.
 
+// When targeting native platforms (i.e. NOT emscripten), one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+// or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be provided. See imgui_impl_wgpu.h for more details.
+#ifndef __EMSCRIPTEN__
+    #if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) == defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    #error exactly one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be defined!
+    #endif
+#else
+    #if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) || defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    #error neither IMGUI_IMPL_WEBGPU_BACKEND_DAWN nor IMGUI_IMPL_WEBGPU_BACKEND_WGPU may be defined if targeting emscripten!
+    #endif
+#endif
+
 #include "imgui.h"
 #ifndef IMGUI_DISABLE
 #include "imgui_impl_wgpu.h"
@@ -72,16 +89,17 @@ struct Uniforms
 
 struct ImGui_ImplWGPU_Data
 {
-    WGPUDevice          wgpuDevice = nullptr;
-    WGPUQueue           defaultQueue = nullptr;
-    WGPUTextureFormat   renderTargetFormat = WGPUTextureFormat_Undefined;
-    WGPUTextureFormat   depthStencilFormat = WGPUTextureFormat_Undefined;
-    WGPURenderPipeline  pipelineState = nullptr;
+    ImGui_ImplWGPU_InitInfo initInfo;
+    WGPUDevice              wgpuDevice = nullptr;
+    WGPUQueue               defaultQueue = nullptr;
+    WGPUTextureFormat       renderTargetFormat = WGPUTextureFormat_Undefined;
+    WGPUTextureFormat       depthStencilFormat = WGPUTextureFormat_Undefined;
+    WGPURenderPipeline      pipelineState = nullptr;
 
-    RenderResources     renderResources;
-    FrameResources*     pFrameResources = nullptr;
-    unsigned int        numFramesInFlight = 0;
-    unsigned int        frameIndex = UINT_MAX;
+    RenderResources         renderResources;
+    FrameResources*         pFrameResources = nullptr;
+    unsigned int            numFramesInFlight = 0;
+    unsigned int            frameIndex = UINT_MAX;
 };
 
 // Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
@@ -179,6 +197,12 @@ static void SafeRelease(WGPUBuffer& res)
         wgpuBufferRelease(res);
     res = nullptr;
 }
+static void SafeRelease(WGPUPipelineLayout& res)
+{
+    if (res)
+        wgpuPipelineLayoutRelease(res);
+    res = nullptr;
+}
 static void SafeRelease(WGPURenderPipeline& res)
 {
     if (res)
@@ -233,9 +257,15 @@ static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModule(const c
 {
     ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
 
-    WGPUShaderModuleWGSLDescriptor wgsl_desc = {};
+#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+	WGPUShaderSourceWGSL wgsl_desc = {};
+    wgsl_desc.chain.sType = WGPUSType_ShaderSourceWGSL;
+	wgsl_desc.code = { wgsl_source, WGPU_STRLEN };
+#else
+	WGPUShaderModuleWGSLDescriptor wgsl_desc = {};
     wgsl_desc.chain.sType = WGPUSType_ShaderModuleWGSLDescriptor;
-    wgsl_desc.code = wgsl_source;
+	wgsl_desc.code = wgsl_source;
+#endif
 
     WGPUShaderModuleDescriptor desc = {};
     desc.nextInChain = reinterpret_cast<WGPUChainedStruct*>(&wgsl_desc);
@@ -565,9 +595,7 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
     graphics_pipeline_desc.primitive.stripIndexFormat = WGPUIndexFormat_Undefined;
     graphics_pipeline_desc.primitive.frontFace = WGPUFrontFace_CW;
     graphics_pipeline_desc.primitive.cullMode = WGPUCullMode_None;
-    graphics_pipeline_desc.multisample.count = 1;
-    graphics_pipeline_desc.multisample.mask = UINT_MAX;
-    graphics_pipeline_desc.multisample.alphaToCoverageEnabled = false;
+    graphics_pipeline_desc.multisample = bd->initInfo.PipelineMultisampleState;
 
     // Bind group layouts
     WGPUBindGroupLayoutEntry common_bg_layout_entries[2] = {};
@@ -651,10 +679,20 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
     // Create depth-stencil State
     WGPUDepthStencilState depth_stencil_state = {};
     depth_stencil_state.format = bd->depthStencilFormat;
+#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+    depth_stencil_state.depthWriteEnabled = WGPUOptionalBool_False;
+#else
     depth_stencil_state.depthWriteEnabled = false;
+#endif
     depth_stencil_state.depthCompare = WGPUCompareFunction_Always;
     depth_stencil_state.stencilFront.compare = WGPUCompareFunction_Always;
+    depth_stencil_state.stencilFront.failOp = WGPUStencilOperation_Keep;
+    depth_stencil_state.stencilFront.depthFailOp = WGPUStencilOperation_Keep;
+    depth_stencil_state.stencilFront.passOp = WGPUStencilOperation_Keep;
     depth_stencil_state.stencilBack.compare = WGPUCompareFunction_Always;
+    depth_stencil_state.stencilBack.failOp = WGPUStencilOperation_Keep;
+    depth_stencil_state.stencilBack.depthFailOp = WGPUStencilOperation_Keep;
+    depth_stencil_state.stencilBack.passOp = WGPUStencilOperation_Keep;
 
     // Configure disabled depth-stencil state
     graphics_pipeline_desc.depthStencil = (bd->depthStencilFormat == WGPUTextureFormat_Undefined) ? nullptr :  &depth_stencil_state;
@@ -684,6 +722,7 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
 
     SafeRelease(vertex_shader_desc.module);
     SafeRelease(pixel_shader_desc.module);
+    SafeRelease(graphics_pipeline_desc.layout);
     SafeRelease(bg_layouts[0]);
 
     return true;
@@ -705,22 +744,32 @@ void ImGui_ImplWGPU_InvalidateDeviceObjects()
         SafeRelease(bd->pFrameResources[i]);
 }
 
-bool ImGui_ImplWGPU_Init(WGPUDevice device, int num_frames_in_flight, WGPUTextureFormat rt_format, WGPUTextureFormat depth_format)
+bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
     // Setup backend capabilities flags
     ImGui_ImplWGPU_Data* bd = IM_NEW(ImGui_ImplWGPU_Data)();
     io.BackendRendererUserData = (void*)bd;
+#if defined(__EMSCRIPTEN__)
+    io.BackendRendererName = "imgui_impl_webgpu_emscripten";
+#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN)
+    io.BackendRendererName = "imgui_impl_webgpu_dawn";
+#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    io.BackendRendererName = "imgui_impl_webgpu_wgpu";
+#else
     io.BackendRendererName = "imgui_impl_webgpu";
+#endif
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
 
-    bd->wgpuDevice = device;
+    bd->initInfo = *init_info;
+    bd->wgpuDevice = init_info->Device;
     bd->defaultQueue = wgpuDeviceGetQueue(bd->wgpuDevice);
-    bd->renderTargetFormat = rt_format;
-    bd->depthStencilFormat = depth_format;
-    bd->numFramesInFlight = num_frames_in_flight;
+    bd->renderTargetFormat = init_info->RenderTargetFormat;
+    bd->depthStencilFormat = init_info->DepthStencilFormat;
+    bd->numFramesInFlight = init_info->NumFramesInFlight;
     bd->frameIndex = UINT_MAX;
 
     bd->renderResources.FontTexture = nullptr;
@@ -733,8 +782,8 @@ bool ImGui_ImplWGPU_Init(WGPUDevice device, int num_frames_in_flight, WGPUTextur
     bd->renderResources.ImageBindGroupLayout = nullptr;
 
     // Create buffers with a default size (they will later be grown as needed)
-    bd->pFrameResources = new FrameResources[num_frames_in_flight];
-    for (int i = 0; i < num_frames_in_flight; i++)
+    bd->pFrameResources = new FrameResources[bd->numFramesInFlight];
+    for (unsigned int i = 0; i < bd->numFramesInFlight; i++)
     {
         FrameResources* fr = &bd->pFrameResources[i];
         fr->IndexBuffer = nullptr;

external/imgui/imgui/backends/imgui_impl_wgpu.h

@@ -2,6 +2,13 @@
 // This needs to be used along with a Platform Binding (e.g. GLFW)
 // (Please note that WebGPU is currently experimental, will not run on non-beta browsers, and may break.)
 
+// Important note to dawn and/or wgpu users: when targeting native platforms (i.e. NOT emscripten),
+// one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be provided.
+// Add #define to your imconfig.h file, or as a compilation flag in your build system.
+// This requirement will be removed once WebGPU stabilizes and backends converge on a unified interface.
+//#define IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+//#define IMGUI_IMPL_WEBGPU_BACKEND_WGPU
+
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'WGPUTextureView' as ImTextureID. Read the FAQ about ImTextureID!
 //  [X] Renderer: Large meshes support (64k+ vertices) with 16-bit indices.
@@ -20,7 +27,25 @@
 
 #include <webgpu/webgpu.h>
 
-IMGUI_IMPL_API bool ImGui_ImplWGPU_Init(WGPUDevice device, int num_frames_in_flight, WGPUTextureFormat rt_format, WGPUTextureFormat depth_format = WGPUTextureFormat_Undefined);
+// Initialization data, for ImGui_ImplWGPU_Init()
+struct ImGui_ImplWGPU_InitInfo
+{
+    WGPUDevice              Device;
+    int                     NumFramesInFlight = 3;
+    WGPUTextureFormat       RenderTargetFormat = WGPUTextureFormat_Undefined;
+    WGPUTextureFormat       DepthStencilFormat = WGPUTextureFormat_Undefined;
+    WGPUMultisampleState    PipelineMultisampleState = {};
+
+    ImGui_ImplWGPU_InitInfo()
+    {
+        PipelineMultisampleState.count = 1;
+        PipelineMultisampleState.mask = UINT32_MAX;
+        PipelineMultisampleState.alphaToCoverageEnabled = false;
+    }
+};
+
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+IMGUI_IMPL_API bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info);
 IMGUI_IMPL_API void ImGui_ImplWGPU_Shutdown();
 IMGUI_IMPL_API void ImGui_ImplWGPU_NewFrame();
 IMGUI_IMPL_API void ImGui_ImplWGPU_RenderDrawData(ImDrawData* draw_data, WGPURenderPassEncoder pass_encoder);

external/imgui/imgui/backends/imgui_impl_win32.cpp

@@ -16,29 +16,12 @@
 // - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
 // - Introduction, links and more at the top of imgui.cpp
 
-#include "imgui.h"
-#ifndef IMGUI_DISABLE
-#include "imgui_impl_win32.h"
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN
-#endif
-#include <windows.h>
-#include <windowsx.h> // GET_X_LPARAM(), GET_Y_LPARAM()
-#include <tchar.h>
-#include <dwmapi.h>
-
-// Configuration flags to add in your imconfig.h file:
+// Configuration flags to add in your imconfig file:
 //#define IMGUI_IMPL_WIN32_DISABLE_GAMEPAD              // Disable gamepad support. This was meaningful before <1.81 but we now load XInput dynamically so the option is now less relevant.
 
-// Using XInput for gamepad (will load DLL dynamically)
-#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
-#include <xinput.h>
-typedef DWORD (WINAPI *PFN_XInputGetCapabilities)(DWORD, DWORD, XINPUT_CAPABILITIES*);
-typedef DWORD (WINAPI *PFN_XInputGetState)(DWORD, XINPUT_STATE*);
-#endif
-
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-07-08: Inputs: Fixed ImGuiMod_Super being mapped to VK_APPS instead of VK_LWIN||VK_RWIN. (#7768)
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys.
 //  2023-09-25: Inputs: Synthesize key-down event on key-up for VK_SNAPSHOT / ImGuiKey_PrintScreen as Windows doesn't emit it (same behavior as GLFW/SDL).
 //  2023-09-07: Inputs: Added support for keyboard codepage conversion for when application is compiled in MBCS mode and using a non-Unicode window.
@@ -91,11 +74,40 @@ typedef DWORD (WINAPI *PFN_XInputGetState)(DWORD, XINPUT_STATE*);
 //  2017-10-23: Inputs: Using Win32 ::SetCapture/::GetCapture() to retrieve mouse positions outside the client area when dragging.
 //  2016-11-12: Inputs: Only call Win32 ::SetCursor(nullptr) when io.MouseDrawCursor is set.
 
+#include "imgui.h"
+#ifndef IMGUI_DISABLE
+#include "imgui_impl_win32.h"
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <windowsx.h> // GET_X_LPARAM(), GET_Y_LPARAM()
+#include <tchar.h>
+#include <dwmapi.h>
+
+// Using XInput for gamepad (will load DLL dynamically)
+#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
+#include <xinput.h>
+typedef DWORD(WINAPI* PFN_XInputGetCapabilities)(DWORD, DWORD, XINPUT_CAPABILITIES*);
+typedef DWORD(WINAPI* PFN_XInputGetState)(DWORD, XINPUT_STATE*);
+#endif
+
+// Clang/GCC warnings with -Weverything
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcast-function-type"     // warning: cast between incompatible function types (for loader)
+#endif
+#if defined(__GNUC__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpragmas"                  // warning: unknown option after '#pragma GCC diagnostic' kind
+#pragma GCC diagnostic ignored "-Wcast-function-type"       // warning: cast between incompatible function types (for loader)
+#endif
+
 struct ImGui_ImplWin32_Data
 {
     HWND                        hWnd;
     HWND                        MouseHwnd;
-    int                         MouseTrackedArea;   // 0: not tracked, 1: client are, 2: non-client area
+    int                         MouseTrackedArea;   // 0: not tracked, 1: client area, 2: non-client area
     int                         MouseButtonsDown;
     INT64                       Time;
     INT64                       TicksPerSecond;
@@ -136,6 +148,7 @@ static void ImGui_ImplWin32_UpdateKeyboardCodePage()
 static bool ImGui_ImplWin32_InitEx(void* hwnd, bool platform_has_own_dc)
 {
     ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
 
     INT64 perf_frequency, perf_counter;
@@ -158,7 +171,8 @@ static bool ImGui_ImplWin32_InitEx(void* hwnd, bool platform_has_own_dc)
     ImGui_ImplWin32_UpdateKeyboardCodePage();
 
     // Set platform dependent data in viewport
-    ImGui::GetMainViewport()->PlatformHandleRaw = (void*)hwnd;
+    ImGuiViewport* main_viewport = ImGui::GetMainViewport();
+    main_viewport->PlatformHandle = main_viewport->PlatformHandleRaw = (void*)bd->hWnd;
     IM_UNUSED(platform_has_own_dc); // Used in 'docking' branch
 
     // Dynamically load XInput library
@@ -281,7 +295,7 @@ static void ImGui_ImplWin32_UpdateKeyModifiers()
     io.AddKeyEvent(ImGuiMod_Ctrl, IsVkDown(VK_CONTROL));
     io.AddKeyEvent(ImGuiMod_Shift, IsVkDown(VK_SHIFT));
     io.AddKeyEvent(ImGuiMod_Alt, IsVkDown(VK_MENU));
-    io.AddKeyEvent(ImGuiMod_Super, IsVkDown(VK_APPS));
+    io.AddKeyEvent(ImGuiMod_Super, IsVkDown(VK_LWIN) || IsVkDown(VK_RWIN));
 }
 
 static void ImGui_ImplWin32_UpdateMouseData()
@@ -372,9 +386,9 @@ static void ImGui_ImplWin32_UpdateGamepads()
 
 void    ImGui_ImplWin32_NewFrame()
 {
-    ImGuiIO& io = ImGui::GetIO();
     ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
-    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplWin32_Init()?");
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized? Did you call ImGui_ImplWin32_Init()?");
+    ImGuiIO& io = ImGui::GetIO();
 
     // Setup display size (every frame to accommodate for window resizing)
     RECT rect = { 0, 0, 0, 0 };
@@ -405,12 +419,14 @@ void    ImGui_ImplWin32_NewFrame()
     ImGui_ImplWin32_UpdateGamepads();
 }
 
-// There is no distinct VK_xxx for keypad enter, instead it is VK_RETURN + KF_EXTENDED, we assign it an arbitrary value to make code more readable (VK_ codes go up to 255)
-#define IM_VK_KEYPAD_ENTER      (VK_RETURN + 256)
-
 // Map VK_xxx to ImGuiKey_xxx.
-static ImGuiKey ImGui_ImplWin32_VirtualKeyToImGuiKey(WPARAM wParam)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplWin32_KeyEventToImGuiKey(WPARAM wParam, LPARAM lParam)
 {
+    // There is no distinct VK_xxx for keypad enter, instead it is VK_RETURN + KF_EXTENDED.
+    if ((wParam == VK_RETURN) && (HIWORD(lParam) & KF_EXTENDED))
+        return ImGuiKey_KeypadEnter;
+
     switch (wParam)
     {
         case VK_TAB: return ImGuiKey_Tab;
@@ -459,7 +475,6 @@ static ImGuiKey ImGui_ImplWin32_VirtualKeyToImGuiKey(WPARAM wParam)
         case VK_MULTIPLY: return ImGuiKey_KeypadMultiply;
         case VK_SUBTRACT: return ImGuiKey_KeypadSubtract;
         case VK_ADD: return ImGuiKey_KeypadAdd;
-        case IM_VK_KEYPAD_ENTER: return ImGuiKey_KeypadEnter;
         case VK_LSHIFT: return ImGuiKey_LeftShift;
         case VK_LCONTROL: return ImGuiKey_LeftCtrl;
         case VK_LMENU: return ImGuiKey_LeftAlt;
@@ -570,11 +585,12 @@ static ImGuiMouseSource GetMouseSourceFromMessageExtraInfo()
 
 IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
-    if (ImGui::GetCurrentContext() == nullptr)
-        return 0;
-
-    ImGuiIO& io = ImGui::GetIO();
+    // Most backends don't have silent checks like this one, but we need it because WndProc are called early in CreateWindow().
+    // We silently allow both context or just only backend data to be nullptr.
     ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
+    if (bd == nullptr)
+        return 0;
+    ImGuiIO& io = ImGui::GetIO();
 
     switch (msg)
     {
@@ -596,10 +612,10 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
         }
         POINT mouse_pos = { (LONG)GET_X_LPARAM(lParam), (LONG)GET_Y_LPARAM(lParam) };
         if (msg == WM_NCMOUSEMOVE && ::ScreenToClient(hwnd, &mouse_pos) == FALSE) // WM_NCMOUSEMOVE are provided in absolute coordinates.
-            break;
+            return 0;
         io.AddMouseSourceEvent(mouse_source);
         io.AddMousePosEvent((float)mouse_pos.x, (float)mouse_pos.y);
-        break;
+        return 0;
     }
     case WM_MOUSELEAVE:
     case WM_NCMOUSELEAVE:
@@ -612,8 +628,18 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
             bd->MouseTrackedArea = 0;
             io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
         }
-        break;
+        return 0;
     }
+    case WM_DESTROY:
+        if (bd->MouseHwnd == hwnd && bd->MouseTrackedArea != 0)
+        {
+            TRACKMOUSEEVENT tme_cancel = { sizeof(tme_cancel), TME_CANCEL, hwnd, 0 };
+            ::TrackMouseEvent(&tme_cancel);
+            bd->MouseHwnd = nullptr;
+            bd->MouseTrackedArea = 0;
+            io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
+        }
+        return 0;
     case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK:
     case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK:
     case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK:
@@ -667,12 +693,9 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
             // Submit modifiers
             ImGui_ImplWin32_UpdateKeyModifiers();
 
-            // Obtain virtual key code
-            // (keypad enter doesn't have its own... VK_RETURN with KF_EXTENDED flag means keypad enter, see IM_VK_KEYPAD_ENTER definition for details, it is mapped to ImGuiKey_KeyPadEnter.)
-            int vk = (int)wParam;
-            if ((wParam == VK_RETURN) && (HIWORD(lParam) & KF_EXTENDED))
-                vk = IM_VK_KEYPAD_ENTER;
-            const ImGuiKey key = ImGui_ImplWin32_VirtualKeyToImGuiKey(vk);
+            // Obtain virtual key code and convert to ImGuiKey
+            const ImGuiKey key = ImGui_ImplWin32_KeyEventToImGuiKey(wParam, lParam);
+            const int vk = (int)wParam;
             const int scancode = (int)LOBYTE(HIWORD(lParam));
 
             // Special behavior for VK_SNAPSHOT / ImGuiKey_PrintScreen as Windows doesn't emit the key down event.
@@ -900,4 +923,11 @@ void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd)
 
 //---------------------------------------------------------------------------------------------------------
 
+#if defined(__GNUC__)
+#pragma GCC diagnostic pop
+#endif
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
+
 #endif // #ifndef IMGUI_DISABLE

external/imgui/imgui/backends/imgui_impl_win32.h

@@ -20,6 +20,7 @@
 #include "imgui.h"      // IMGUI_IMPL_API
 #ifndef IMGUI_DISABLE
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplWin32_Init(void* hwnd);
 IMGUI_IMPL_API bool     ImGui_ImplWin32_InitForOpenGL(void* hwnd);
 IMGUI_IMPL_API void     ImGui_ImplWin32_Shutdown();

external/imgui/imgui/docs/BACKENDS.md

@@ -2,23 +2,10 @@ _(You may browse this at https://github.com/ocornut/imgui/blob/master/docs/BACKE
 
 ## Dear ImGui: Backends
 
-**The backends/ folder contains backends for popular platforms/graphics API, which you can use in
-your application or engine to easily integrate Dear ImGui.** Each backend is typically self-contained in a pair of files: imgui_impl_XXXX.cpp + imgui_impl_XXXX.h.
-
-- The 'Platform' backends are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, and windowing.<BR>
-  e.g. Windows ([imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp)), GLFW ([imgui_impl_glfw.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_glfw.cpp)), SDL2 ([imgui_impl_sdl2.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_sdl2.cpp)), etc.
-
-- The 'Renderer' backends are in charge of: creating atlas texture, and rendering imgui draw data.<BR>
-  e.g. DirectX11 ([imgui_impl_dx11.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_dx11.cpp)), OpenGL/WebGL ([imgui_impl_opengl3.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_opengl3.cpp)), Vulkan ([imgui_impl_vulkan.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_vulkan.cpp)), etc.
-
-- For some high-level frameworks, a single backend usually handles both 'Platform' and 'Renderer' parts.<BR>
-  e.g. Allegro 5 ([imgui_impl_allegro5.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_allegro5.cpp)). If you end up creating a custom backend for your engine, you may want to do the same.
-
-An application usually combines one Platform backend + one Renderer backend + main Dear ImGui sources.
-For example, the [example_win32_directx11](https://github.com/ocornut/imgui/tree/master/examples/example_win32_directx11) application combines imgui_impl_win32.cpp + imgui_impl_dx11.cpp. There are 20+ examples in the [examples/](https://github.com/ocornut/imgui/blob/master/examples/) folder. See [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) for details.
-
-**Once Dear ImGui is setup and running, run and refer to `ImGui::ShowDemoWindow()` in imgui_demo.cpp for usage of the end-user API.**
+### Integrating backends
 
+💡 The **[Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) wiki guide** has examples of how to integrate Dear ImGui into an existing application.
+<BR> The [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) documentation may also be worth a read.
 
 ### What are backends?
 
@@ -38,7 +25,7 @@ Dear ImGui is highly portable and only requires a few things to run and render,
  - Optional: multi-viewports support.
  etc.
 
-This is essentially what each backend is doing + obligatory portability cruft. Using default backends ensure you can get all those features including the ones that would be harder to implement on your side (e.g. multi-viewports support).
+This is essentially what each backend is doing + obligatory portability cruft. Using standard backends ensure you can get all those features including the ones that would be harder to implement on your side (e.g. multi-viewports support).
 
 It is important to understand the difference between the core Dear ImGui library (files in the root folder)
 and the backends which we are describing here (backends/ folder).
@@ -47,11 +34,24 @@ and the backends which we are describing here (backends/ folder).
 - You should be able to write backends for pretty much any platform and any 3D graphics API.
   e.g. you can get creative and use software rendering or render remotely on a different machine.
 
+### Standard backends
 
-### Integrating a backend
+**The [backends/](https://github.com/ocornut/imgui/blob/master/backends) folder contains backends for popular platforms/graphics API, which you can use in
+your application or engine to easily integrate Dear ImGui.** Each backend is typically self-contained in a pair of files: imgui_impl_XXXX.cpp + imgui_impl_XXXX.h.
 
-See "Getting Started" section of [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) for more details.
+- The 'Platform' backends are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, and windowing.<BR>
+  e.g. Windows ([imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp)), GLFW ([imgui_impl_glfw.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_glfw.cpp)), SDL2 ([imgui_impl_sdl2.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_sdl2.cpp)), etc.
 
+- The 'Renderer' backends are in charge of: creating atlas texture, and rendering imgui draw data.<BR>
+  e.g. DirectX11 ([imgui_impl_dx11.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_dx11.cpp)), OpenGL/WebGL ([imgui_impl_opengl3.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_opengl3.cpp)), Vulkan ([imgui_impl_vulkan.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_vulkan.cpp)), etc.
+
+- For some high-level frameworks, a single backend usually handles both 'Platform' and 'Renderer' parts.<BR>
+  e.g. Allegro 5 ([imgui_impl_allegro5.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_allegro5.cpp)). If you end up creating a custom backend for your engine, you may want to do the same.
+
+An application usually combines one Platform backend + one Renderer backend + main Dear ImGui sources.
+For example, the [example_win32_directx11](https://github.com/ocornut/imgui/tree/master/examples/example_win32_directx11) application combines imgui_impl_win32.cpp + imgui_impl_dx11.cpp. There are 20+ examples in the [examples/](https://github.com/ocornut/imgui/blob/master/examples/) folder. See [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) for details.
+
+**Once Dear ImGui is setup and running, run and refer to `ImGui::ShowDemoWindow()` in imgui_demo.cpp for usage of the end-user API.**
 
 ### List of backends
 
@@ -79,14 +79,14 @@ List of Renderer Backends:
     imgui_impl_sdlrenderer2.cpp ; SDL_Renderer (optional component of SDL2 available from SDL 2.0.18+)
     imgui_impl_sdlrenderer3.cpp ; SDL_Renderer (optional component of SDL3 available from SDL 3.0.0+)
     imgui_impl_vulkan.cpp     ; Vulkan
-    imgui_impl_wgpu.cpp       ; WebGPU
+    imgui_impl_wgpu.cpp       ; WebGPU (web and desktop)
 
 List of high-level Frameworks Backends (combining Platform + Renderer):
 
     imgui_impl_allegro5.cpp
 
 Emscripten is also supported!
-The SDL+GL, GLFW+GL and SDL+WebGPU examples are all ready to build and run with Emscripten.
+The SDL+GL, GLFW+GL and GLFW+WebGPU examples are all ready to build and run with Emscripten.
 
 ### Backends for third-party frameworks, graphics API or other languages
 
@@ -135,7 +135,7 @@ Generally:
 It is unlikely you will add value to your project by creating your own backend.
 
 Also:
-The [multi-viewports feature](https://github.com/ocornut/imgui/issues/1542) of the 'docking' branch allows
+The [multi-viewports feature](https://github.com/ocornut/imgui/wiki/Multi-Viewports) of the 'docking' branch allows
 Dear ImGui windows to be seamlessly detached from the main application window. This is achieved using an
 extra layer to the Platform and Renderer backends, which allows Dear ImGui to communicate platform-specific
 requests such as: "create an additional OS window", "create a render context", "get the OS position of this

external/imgui/imgui/docs/CHANGELOG.txt

@@ -35,6 +35,835 @@ HOW TO UPDATE?
   and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
 - Please report any issue!
 
+-----------------------------------------------------------------------
+ VERSION 1.91.3 (Released 2024-10-04)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.91.3
+
+Breaking changes:
+
+- Drags: treat v_min==v_max as a valid clamping range when != 0.0f. Zero is still a special
+  value due to legacy reasons, unless using ImGuiSliderFlags_ClampZeroRange. (#7968, #3361, #76)
+- Drags: extended behavior of ImGuiSliderFlags_AlwaysClamp to include _ClampZeroRange.
+  It considers v_min==v_max==0.0f as a valid clamping range (aka edits not allowed).
+  Although unlikely, it you wish to only clamp on text input but want v_min==v_max==0.0f
+  to mean unclamped drags, you can use _ClampOnInput instead of _AlwaysClamp. (#7968, #3361, #76)
+
+Other changes:
+
+- Error Handling: Enabled/improved error recovery systems. (#1651, #5654)
+  - Error recovery is provided as a way to facilitate:
+    - Recovery after a programming error. Native code or scripting language (the later
+      tends to facilitate iterating on code while running).
+    - Recovery after running an exception handler or any error processing which may skip code
+      after an error has been detected.
+  - Error recovery is not perfect nor guaranteed! It is a feature to ease development.
+    You not are not supposed to rely on it in the course of a normal application run.
+  - Functions that support error recovery are using IM_ASSERT_USER_ERROR() instead of IM_ASSERT().
+  - By design, we do not allow error recovery to be 100% silent. One of the options needs to be enabled!
+  - Possible usage: facilitate recovery from errors triggered from a scripting language or
+    after specific exceptions handlers. Surface errors to programmers in less aggressive ways.
+  - Always ensure that on programmers seats you have at minimum Asserts or Tooltips enabled
+    when making direct imgui API calls! Otherwise it would severely hinder your ability to
+    catch and correct mistakes!
+  - Added io.ConfigErrorRecovery to enable error recovery support.
+  - Added io.ConfigErrorRecoveryEnableAssert to assert on recoverable errors.
+  - Added io.ConfigErrorRecoveryEnableDebugLog to output to debug log on recoverable errors.
+  - Added io.ConfigErrorRecoveryEnableTooltip to enable displaying an error tooltip on recoverable errors.
+    The tooltip include a way to enable asserts if they were disabled.
+  - All options are enabled by default.
+  - Read https://github.com/ocornut/imgui/wiki/Error-Handling for a bit more details.
+- Windows: BeginChild(): made it possible to call SetNextWindowSize() on a child window
+  using ImGuiChildFlags_ResizeX,ImGuiChildFlags_ResizeY in order to override its current
+  size. (#1710, #8020)
+- Scrollbar: Shift+Click scroll to clicked location (pre-1.90.8 default). (#8002, #7328)
+- Scrollbar: added io.ConfigScrollbarScrollByPage setting (default to true). (#8002, #7328)
+  Set io.ConfigScrollbarScrollByPage=false to enforce always scrolling to clicked location.
+- Drags: split ImGuiSliderFlags_AlwaysClamp into two distinct flags: (#7968, #3361, #76)
+  - ImGuiSliderFlags_AlwaysClamp = ImGuiSliderFlags_ClampOnInput + ImGuiSliderFlags_ClampZeroRange.
+  - Previously _AlwaysClamp only did the equivalent of _ClampOnInput.
+  - Added ImGuiSliderFlags_ClampOnInput which is now a subset of AlwaysClamp.
+    (note that it was the old name of AlwaysClamp, but we are reintroducing that name).
+  - Added ImGuiSliderFlags_ClampZeroRange to enforce clamping even when v_min==v_max==0.0f
+    in drag functions. Sliders are not affected.
+- Tooltips, Drag and Drop: Fixed an issue where the fallback drag and drop payload tooltip
+  appeared during drag and drop release.
+- Tooltips, Drag and Drop: Stabilized name of drag and drop tooltip window so that
+  transitioning from an item tooltip to a drag tooltip doesn't leak window auto-sizing
+  info from one to the other. (#8036)
+- Tooltips: Tooltips triggered from touch inputs are positioned above the item. (#8036)
+- Backends: SDL3: Update for API changes: SDL_bool removal. SDL_INIT_TIMER removal.
+- Backends: WebGPU: Fixed DAWN api change using WGPUStringView in WGPUShaderSourceWGSL.
+  (#8009, #8010) [@blitz-research]
+
+-----------------------------------------------------------------------
+ VERSION 1.91.2 (Released 2024-09-19)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.91.2
+
+Breaking changes:
+
+ - Internals: using multiple overlayed ButtonBehavior() with same ID will now have the
+   io.ConfigDebugHighlightIdConflicts=true feature emit a warning. (#8030)
+   It was one of the rare case where using same ID is legal. Workarounds:
+   - use single ButtonBehavior() call with multiple _MouseButton flags
+   - or surround the calls with PushItemFlag(ImGuiItemFlags_AllowDuplicateId, true); ... PopItemFlag()
+
+Other changes:
+
+- Added io.ConfigDebugHighlightIdConflicts debug feature! (#7961, #7669)
+  THIS DETECTS THE MOST COMMON USER ERROR BY FIRST-TIME DEAR IMGUI PROGRAMMERS!
+  - The tool detects when multiple items are sharing the same identifier, due to not
+    using PushID/PopID in loops, or not using ID stack facilities such as "##" suffixes.
+    Very frequently it happens when using empty "" labels.
+  - When hovering an item with a conflicting ID, all visible items with the same ID will
+    be highlighted and an explanatory tooltip is made visible.
+  - The feature may be disabled and is exposed in Demo->Tools menu.
+  - I've been wanting to add this tool for a long time, but was stalled by finding a way to
+    not make it spammy + make it practically zero cost. After @pthom made various proposals to
+    solve the same problem (thanks for pushing me!), I decided it was time to finish it.
+  - Added ImGuiItemFlags_AllowDuplicateId to use with PushItemFlag()/PopItemFlag() if for some
+    reason you intend to have duplicate identifiers.
+  - (#74, #96, #480, #501, #647, #654, #719, #843, #894, #1057, #1173, #1390, #1414, #1556, #1768,
+     #2041, #2116, #2330, #2475, #2562, #2667, #2807, #2885, #3102, #3375, #3526, #3964, #4008,
+     #4070, #4158, #4172, #4199, #4375, #4395, #4471, #4548, #4612, #4631, #4657, #4796, #5210,
+     #5303, #5360, #5393, #5533, #5692, #5707, #5729, #5773, #5787, #5884, #6046, #6093, #6186,
+     #6223, #6364, #6387, #6567, #6692, #6724, #6939, #6984, #7246, #7270, #7375, #7421, #7434,
+     #7472, #7581, #7724, #7926, #7937 and probably more..)
+- Nav: pressing any keyboard key while holding Alt disable toggling nav layer on Alt release. (#4439)
+- MultiSelect+Tables: fixed an issue where box-select would skip items while drag-scrolling
+  in a table with outer borders. (#7970, #7821).
+- Inputs: SetNextItemShortcut() with ImGuiInputFlags_Tooltip doesn't show tooltip when item is active.
+- InputText: internal refactoring to simplify and optimize the code. The ImWchar buffer has been
+  removed. Simplifications allowed to implement new optimizations for handling very large text buffers
+  (e.g. in our testing, handling of a 1 MB text buffer is now 3 times faster in VS2022 Debug build).
+  This is the first step toward more refactoring. (#7925) [@alektron, @ocornut]
+- InputText: added CJK double-width punctuation to list of separators considered for CTRL+Arrow.
+- Tables: fixed auto-width columns when using synced-instances of same table. The previous fix
+  done in v1.90.5 was incomplete. (#7218)
+- Tables: fixed assertion related to inconsistent outer clipping when sizes are not rounded. (#7957) [@eclbtownsend]
+- Tables: fixed assertion with tables with borders when clipped by parent. (#6765, #3752, #7428)
+- Windows: fixed an issue where double-click to collapse could be triggered even while another
+  item is active, if the item didn't use the left mouse button. (#7841)
+- Misc: Made it accepted to call SetMouseCursor() with any out-of-bound value, as a way to allow
+  hacking in custom cursors if desirable.
+- Fonts: fixed ellipsis "..." rendering width miscalculation bug introduced in 1.91.0. (#7976) [@DDeimos]
+- TextLinkOpenURL(): modified tooltip to display a verb "Open 'xxxx'". (#7885, #7660)
+- Backends: SDL2: use SDL_Vulkan_GetDrawableSize() when available. (#7967, #3190) [@scribam]
+- Backends: GLFW+Emscripten: use OSX behaviors automatically when using contrib glfw port. (#7965, #7915)
+  [@ypujante]
+- Backends: WebGPU: Added support for optional IMGUI_IMPL_WEBGPU_BACKEND_DAWN / IMGUI_IMPL_WEBGPU_BACKEND_WGPU
+  defines to handle ever-changing native implementations. (#7977, #7969, #6602, #6188, #7523) [@acgaudette]
+
+-----------------------------------------------------------------------
+ VERSION 1.91.1 (Released 2024-09-04)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.91.1
+
+Breaking changes:
+
+- BeginChild(): renamed ImGuiChildFlags_Border to ImGuiChildFlags_Borders for consistency. [@cfillion]
+  Kept inline redirection flag (will obsolete).
+- IO: moved clipboard functions from ImGuiIO to ImGuiPlatformIO:
+    - io.GetClipboardTextFn         -> platform_io.Platform_GetClipboardTextFn
+    - io.SetClipboardTextFn         -> platform_io.Platform_SetClipboardTextFn
+    - in function signatures, changed 'void* user_data' to 'ImGuiContext* ctx' for consistency
+      with other functions. Pull your user data from platform_io.ClipboardUserData if used.
+    - as this is will affect all users of custom engines/backends, we are providing proper
+      legacy redirection (will obsolete).
+- IO: moved other functions from ImGuiIO to ImGuiPlatformIO:
+    - io.PlatformOpenInShellFn      -> platform_io.Platform_OpenInShellFn (#7660)
+    - io.PlatformSetImeDataFn       -> platform_io.Platform_SetImeDataFn
+    - io.PlatformLocaleDecimalPoint -> platform_io.Platform_LocaleDecimalPoint (#7389, #6719, #2278)
+    - access those via GetPlatformIO() instead of GetIO().
+  (Because PlatformOpenInShellFn and PlatformSetImeDataFn were introduced very recently and
+  often automatically set by core library and backends, we are exceptionally not maintaining
+  a legacy redirection symbol for those two.)
+- Commented the old ImageButton() signature obsoleted in 1.89 (~August 2022). (#5533, #4471, #2464, #1390)
+   - old ImageButton() used ImTextureId as item id (created issue with e.g. multiple buttons in same scope, transient texture id values, opaque computation of ID)
+   - new ImageButton() requires an explicit 'const char* str_id'
+   - old ImageButton() had frame_padding' override argument.
+   - new ImageButton() always use style.FramePadding, which you can modify using PushStyleVar()/PopStyleVar().
+
+Other changes:
+
+- IO: Added GetPlatformIO() and ImGuiPlatformIO, pulled from 'docking' branch, which
+  is a centralized spot to connect os/platform/renderer related functions.
+  Clipboard, IME and OpenInShell hooks are moved here. (#7660)
+- IO, InputText: fixed an issue where typing text in an InputText() would defer character
+  processing by one frame, because of the trickling input queue. Reworked interleaved
+  keys<>char trickling to take account for keys known to input characters. (#7889, #4921, #4858)
+- Windows: adjust default ClipRect to better match rendering of thick borders (which are in
+  theory not supported). Compensate for the fact that borders are centered around the windows
+  edge rather than inner. (#7887, #7888 + #3312, #7540, #3756, #6170, #6365)
+- Made BeginItemTooltip() and IsItemHovered() with delay flag infer an implicit ID (for
+  ID-less items such as Text element) in a way that works when item resizes. (#7945, #1485)
+- MultiSelect+TreeNode+Drag and Drop: fixed an issue where carrying a drag and drop payload
+  over an already open tree node using multi-select would incorrectly select it. (#7850)
+- MultiSelect+TreeNode: default open behavior is _OpenOnDoubleClick + _OpenOnArrow when
+  used in a multi-select context without any ImGuiTreeNode_OpenOnXXX flags set. (#7850)
+- Tables: fixes/revert a 1.90 change were outer border would be moved bottom and right
+  by an extra pixel + rework the change so that contents doesn't overlap the bottom and
+  right border in a scrolling table. (#6765, #3752, #7428)
+- Tables: fixed an issue resizing columns or querying hovered column/row when using multiple
+  synched instances that are layed out at different X positions. (#7933)
+- Tabs: avoid queuing a refocus when tab is already focused, which would have the
+  side-effect of e.g. closing popup on a mouse release. (#7914)
+- InputText: allow callback to update buffer while in read-only mode. (imgui_club/#46)
+- InputText: fixed an issue programmatically refocusing a multi-line input which was just active. (#4761, #7870)
+- TextLink(), TextLinkOpenURL(): change mouse cursor to Hand shape when hovered. (#7885, #7660)
+- Tooltips, Drag and Drop: made it possible to override BeginTooltip() position while inside
+  a drag and drop source or target: a SetNextWindowPos() call won't be overridden. (#6973)
+- PlotHistogram, PlotLines: register item ID and use button behavior in a more idiomatic manner,
+  fixes preventing e.g. GetItemID() and other ID-based helper to work. (#7935, #3072)
+- Style: added PushStyleVarX(), PushStyleVarY() helpers to conveniently modify only
+  one component of a ImVec2 var.
+- Fonts: made it possible to use PushFont()/PopFont() calls across Begin() calls. (#3224, #3875, #6398, #7903)
+- Backends:
+  - Backends: GLFW: added ImGui_ImplGlfw_Sleep() helper function because GLFW does not
+    provide a way to do a portable sleep. (#7844)
+  - Backends: GLFW+Emscripten: Use OpenURL() from GLFW3 contrib port when available and using
+    the contrib port instead of Emscripten own GLFW3 implementation. (#7647, #7915, #7660) [@ypujante]
+  - Backends: SDL2, SDL3: ignore events of other SDL windows. (#7853) [@madebr, @ocornut]
+  - Backends: SDL2, SDL3: storing SDL_WindowID inside ImGuiViewport::PlatformHandle instead of SDL_Window*.
+  - Backends: SDL3: Update for API changes: SDL_GetGamepads() memory ownership logic was reverted back
+    by SDL3 on July 27. (#7918, #7898, #7807) [@cheyao, @MattGuerrette]
+  - Backends: GLFW: passing null window to glfwGetClipboardString()/glfwSetClipboardString()
+    since GLFW own tests are doing that and it seems unnecessary.
+  - Backends: SDL2, SDL3, GLFW, OSX, Allegro: update to set function handlers in ImGuiPlatformIO
+    instead of ImGuiIO.
+- Examples:
+  - Examples: GLFW (all), SDL2 (all), SDL3 (all), Win32+OpenGL3: rework examples main loop
+    to handle minimization without burning CPU or GPU by running unthrottled code. (#7844)
+  - Examples: SDL3: Update for API changes: SDL_Init() returns 0 on failure.
+
+-----------------------------------------------------------------------
+ VERSION 1.91.0 (Released 2024-07-30)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.91.0
+
+Breaking changes:
+
+- IO, IME: renamed platform IME hook and added explicit context for consistency and future-proofness.
+    - old: io.SetPlatformImeDataFn(ImGuiViewport* viewport, ImGuiPlatformImeData* data);
+    - new: io.PlatformSetImeDataFn(ImGuiContext* ctx, ImGuiViewport* viewport, ImGuiPlatformImeData* data);
+  It is expected that for a vast majority of users this is automatically set by core
+  library and/or platform backend so it won't have any effect.
+- Obsoleted GetContentRegionMax(), GetWindowContentRegionMin() and GetWindowContentRegionMax(). (#7838)
+  You should never need those functions! You can do everything in less a confusing manner by only
+  using GetCursorScreenPos() and GetContentRegionAvail(). Also always consider that if you are using
+  GetWindowPos() and GetCursorPos() you may also be making things unnecessarily complicated.
+  I repeat: You can do everything with GetCursorScreenPos() and GetContentRegionAvail()!
+   - GetWindowContentRegionMax().x - GetCursorPos().x              -->  GetContentRegionAvail().x
+   - GetWindowContentRegionMax().x + GetWindowPos().x              -->  GetCursorScreenPos().x + GetContentRegionAvail().x              // when called from left edge of window
+   - GetContentRegionMax()                                         -->  GetContentRegionAvail() + GetCursorScreenPos() - GetWindowPos() // right edge in local coordinates
+   - GetWindowContentRegionMax().x - GetWindowContentRegionMin().x -->  GetContentRegionAvail()                                         // when called from left edge of window
+- Item flag changes:
+  - Obsoleted PushButtonRepeat()/PopButtonRepeat() in favor of using new PushItemFlag()/PopItemFlag()
+    with ImGuiItemFlags_ButtonRepeat. Kept inline redirecting functions (will obsolete).
+  - Obsoleted PushTabStop()/PopTabStop() in favor of using new PushItemFlag()/PopItemFlag()
+    with ImGuiItemFlags_NoTabStop. Kept inline redirecting functions (will obsolete).
+  - Renamed ImGuiSelectableFlags_DontClosePopups to ImGuiSelectableFlags_NoAutoClosePopups for
+    consistency. Kept inline redirecting functions (will obsolete).
+    + Internals: changed/inverted ImGuiItemFlags_SelectableDontClosePopup (default==false) to
+      ImGuiItemFlags_AutoClosePopups (default==true), same logic, only inverted behavior.
+    (#1379, #1468, #2200, #4936, #5216, #7302, #7573)
+- Commented out obsolete ImGuiModFlags (renamed to ImGuiKeyChord in 1.89). (#4921, #456)
+- Commented out obsolete ImGuiModFlags_XXX values (renamed to ImGuiMod_XXX in 1.89). (#4921, #456)
+    - ImGuiModFlags_Ctrl -> ImGuiMod_Ctrl, ImGuiModFlags_Shift -> ImGuiMod_Shift etc.
+- Backends: GLFW+Emscripten: Renamed ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback() to
+  ImGui_ImplGlfw_InstallEmscriptenCallbacks(), with an additional GLFWWindow* parameter. (#7647) [@ypujante]
+
+Other changes:
+
+- Added TextLink(), TextLinkOpenURL() hyperlink widgets. (#7660)
+- IO: added io.PlatformOpenInShellFn handler to open a link/folder/file in OS shell. (#7660)
+  (*EDIT* From next version 1.91.1 we moved this to platform_io.Platform_OpenInShellFn *EDIT**)
+  Added IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS to disable default Windows/Linux/Mac implementations.
+- IO: added io.ConfigNavSwapGamepadButtons to swap Activate/Cancel (A<>B) buttons, to match the
+  typical "Nintendo/Japanese consoles" button layout when using Gamepad navigation. (#787, #5723)
+- Added PushItemFlag()/PopItemFlags(), ImGuiItemFlags to modify shared item flags:
+   - Added ImGuiItemFlags_NoTabStop to disable tabbing through items.
+   - Added ImGuiItemFlags_NoNav to disable any navigation and focus of items. (#787)
+   - Added ImGuiItemFlags_NoNavDefaultFocus to disable item being default focus. (#787)
+   - Added ImGuiItemFlags_ButtonRepeat to enable repeat on any button-like behavior.
+   - Added ImGuiItemFlags_AutoClosePopups to disable menu items/selection auto closing parent popups.
+     Disabling this was previously possible for Selectable() via a direct flag but not for MenuItem().
+     (#1379, #1468, #2200, #4936, #5216, #7302, #7573)
+   - This was mostly all previously in imgui_internal.h.
+- Multi-Select: added multi-select API and demos. (#1861, #6518)
+   - This system implements standard multi-selection idioms (CTRL+mouse click, CTRL+keyboard moves,
+     SHIFT+mouse click, SHIFT+keyboard moves, etc.) with support for clipper (not submitting non-visible
+     items), box-selection with scrolling, and many other details.
+   - In the spirit of Dear ImGui design, your code owns both items and actual selection data.
+     This is designed to allow all kinds of selection storage you may use in your application
+     (e.g. set/map/hash, intrusive selection, interval trees, up to you).
+   - The supported widgets are Selectable(), Checkbox(). TreeNode() is also technically supported but...
+     using this correctly is more complicated. You need some sort of linear/random access to your tree,
+     which is suited to advanced trees setups already implementing filters and clipper.
+     We will work toward simplifying our existing demo for trees.
+   - A helper ImGuiSelectionBasicStorage is provided to facilitate getting started in a typical app
+     (likely to suit a majority of users).
+   - Documentation:
+     - Wiki page https://github.com/ocornut/imgui/wiki/Multi-Select for API overview.
+     - Demo code + headers are well commented.
+  - Added BeginMultiSelect(), EndMultiSelect(), SetNextItemSelectionUserData().
+  - Added IsItemToggledSelection() for use if you need latest selection update during current iteration.
+  - Added ImGuiMultiSelectIO and ImGuiSelectionRequest structures:
+    - BeginMultiSelect() and EndMultiSelect() return a ImGuiMultiSelectIO structure, which
+      is mostly an array of ImGuiSelectionRequest actions (clear, select all, set range, etc.)
+    - Other fields are helpful when using a clipper, or wanting to handle deletion nicely.
+  - Added ImGuiSelectionBasicStorage helper to store and maintain a selection (optional):
+    - This is similar to if you used e.g. a std::set<ID> to store a selection, with all the right
+      glue to honor ImGuiMultiSelectIO requests. Most applications can use that.
+  - Added ImGuiSelectionExternalStorage helper to maintain an externally stored selection (optional):
+    - Helpful to easily bind multi-selection to e.g. an array of checkboxes.
+  - Added ImGuiMultiSelectFlags options:
+    - ImGuiMultiSelectFlags_SingleSelect
+    - ImGuiMultiSelectFlags_NoSelectAll
+    - ImGuiMultiSelectFlags_NoRangeSelect
+    - ImGuiMultiSelectFlags_NoAutoSelect
+    - ImGuiMultiSelectFlags_NoAutoClear
+    - ImGuiMultiSelectFlags_NoAutoClearOnReselect (#7424)
+    - ImGuiMultiSelectFlags_BoxSelect1d
+    - ImGuiMultiSelectFlags_BoxSelect2d
+    - ImGuiMultiSelectFlags_BoxSelectNoScroll
+    - ImGuiMultiSelectFlags_ClearOnEscape
+    - ImGuiMultiSelectFlags_ClearOnClickVoid
+    - ImGuiMultiSelectFlags_ScopeWindow (default), ImGuiMultiSelectFlags_ScopeRect
+    - ImGuiMultiSelectFlags_SelectOnClick (default), ImGuiMultiSelectFlags_SelectOnClickRelease
+    - ImGuiMultiSelectFlags_NavWrapX
+  - Demo: Added "Examples->Assets Browser" demo.
+  - Demo: Added "Widgets->Selection State & Multi-Select" section, with:
+    - Multi-Select
+    - Multi-Select (with clipper)
+    - Multi-Select (with deletion)
+    - Multi-Select (dual list box) (#6648)
+    - Multi-Select (in a table)
+    - Multi-Select (checkboxes)
+    - Multi-Select (multiple scopes)
+    - Multi-Select (tiled assert browser)
+    - Multi-Select (trees) (#1861)
+    - Multi-Select (advanced)
+- Inputs: added SetItemKeyOwner(ImGuiKey key) in public API.
+  This is a simplified version of a more complete set of function available in imgui_internal.h.
+  One common use-case for this is to allow your widgets to disable standard inputs behaviors such
+  as Tab or Alt handling, Mouse Wheel scrolling, etc.
+  (#456, #2637, #2620, #2891, #3370, #3724, #4828, #5108, #5242, #5641)
+     // Hovering or activating the button will disable mouse wheel default behavior to scroll
+     InvisibleButton(...);
+     SetItemKeyOwner(ImGuiKey_MouseWheelY);
+- Nav: fixed clicking window decorations (e.g. resize borders) from losing focused item when
+  within a child window using ImGuiChildFlags_NavFlattened.
+- InputText: added '\' and '/' as word separator. (#7824, #7704) [@reduf]
+- TreeNode: added SetNextItemStorageID() to specify/override the identifier used for persisting
+  open/close storage. Useful if needing to often read/write from storage without manipulating
+  the ID stack. (#7553, #6990, #3823, #1131)
+- Selectable: added ImGuiSelectableFlags_Highlight flag to highlight items independently from
+  the hovered state. (#7820) [@rerilier]
+- Clipper: added SeekCursorForItem() function. When using ImGuiListClipper::Begin(INT_MAX) you can
+  can use the clipper without knowing the amount of items beforehand. (#1311)
+  In this situation, call ImGuiListClipper::SeekCursorForItem(items_count) at the end of your iteration
+  loop to position the layout cursor correctly. This is done automatically if provided a count to Begin().
+- Groups, Tables: fixed EndGroup() failing to correctly capture current table occupied size. (#7543)
+- Style, TabBar: added style.TabBarOverlineSize / ImGuiStyleVar_TabBarOverlineSize to manipulate
+  thickness of the horizontal line over selected tabs. [@DctrNoob]
+- Style: close button and collapse/window-menu button hover highlight made rectangular instead of round.
+- Misc: added GetID(int) variant for consistency. (#7111)
+- Debug Tools:
+  - Debug Log: Added IMGUI_DEBUG_LOG(), ImGui::DebugLog() in public API. (#5855)
+    Printed entries include imgui frame counter prefix + are redirected to ShowDebugLogWindow() and
+    other configurable locations. Always call IMGUI_DEBUG_LOG() for maximum stripping in caller code.
+  - Debug Log: Added "Configure Outputs.." button. (#5855)
+  - Debug Log: Fixed incorrect checkbox layout when partially clipped.
+- Demo: Reworked "Property Editor" demo in a manner that more resemble the tree data and
+  struct description data that a real application would want to use.
+- Backends:
+  - Backends: Win32: Fixed ImGuiMod_Super being mapped to VK_APPS instead of (VK_LWIN || VK_RWIN).
+    (#7768, #4858, #2622) [@Aemony]
+  - Backends: SDL3: Update for API changes: SDL_GetGamepads() memory ownership change. (#7807)
+  - Backends: SDL3: Update for API changes: SDL_GetClipboardText() memory ownership change. (#7801)
+  - Backends: SDL3: Update for API changes: SDLK_x renames and SDLK_KP_x removals (#7761, #7762)
+  - Backends: SDL3: Update for API changes: SDL_GetProperty() change to SDL_GetPointerProperty(). (#7794) [@wermipls]
+  - Backends: SDL2,SDL3,OSX: Update for io.SetPlatformImeDataFn() -> io.PlatformSetImeDataFn() rename.
+  - Backends: GLFW,SDL2: Added io.PlatformOpenInShellFn handler for web/Emscripten versions. (#7660)
+    [@ypujante, @ocornut]
+  - Backends: GLFW+Emscripten: Added support for GLFW3 contrib port which fixes many of the things
+    not supported by the embedded GLFW: gamepad support, mouse cursor shapes, copy to clipboard,
+    workaround for Super/Meta key, different ways of resizing, multi-window (glfw/canvas) support.
+    (#7647) [@ypujante]
+  - Backends: GLFW+Emscripten: Fixed Emscripten warning when using mouse wheel on some setups
+    "Unable to preventDefault inside passive event listener". (#7647, #7600) [@ypujante]
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.9 (Released 2024-07-01)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.9
+
+Breaking changes:
+
+- Removed old nested structure: renaming ImGuiStorage::ImGuiStoragePair type to
+  ImGuiStoragePair (simpler for many languages). No significant nested type left.
+- BeginChild: added ImGuiChildFlags_NavFlattened as a replacement for the window
+  flag ImGuiWindowFlags_NavFlattened: the feature only ever made sense for
+  BeginChild() calls anyhow. (#7687) [@cfillion]
+   - old: BeginChild("Name", size, 0, ImGuiWindowFlags_NavFlattened);
+   - new: BeginChild("Name", size, ImGuiChildFlags_NavFlattened, 0)
+  Kept inline redirection flag (will obsolete).
+- Style: renamed tab colors for clarity and consistency with other changes: (#261, #351)
+  - ImGuiCol_TabActive          -> ImGuiCol_TabSelected
+  - ImGuiCol_TabUnfocused       -> ImGuiCol_TabDimmed
+  - ImGuiCol_TabUnfocusedActive -> ImGuiCol_TabDimmedSelected
+  Kept inline redirecting enums (will obsolete).
+- IO: io.ClearInputKeys() (first exposed in 1.89.8) doesn't clear mouse data.
+  Newly added io.ClearInputMouse() does. (#4921)
+- Drag and Drop: renamed ImGuiDragDropFlags_SourceAutoExpirePayload to
+  ImGuiDragDropFlags_PayloadAutoExpire. Kept inline redirecting enum (will obsolete). (#1725, #143)
+
+Other changes:
+
+- IO: do not disable io.ConfigWindowsResizeFromEdges (which allow resizing from borders
+  and lower-left corner) when ImGuiBackendFlags_HasMouseCursors is not set by backend.
+  The initial reasoning is that resizing from borders feels better when correct mouse cursor
+  shape change as honored by backends. Keeping this enabling will hopefully increase pressure
+  on third-party backends to set ImGuiBackendFlags_HasMouseCursors and honor changes of
+  ImGui::GetMouseCursor() value. (#1495)
+- IO: do not claim io.WantCaptureMouse=true on the mouse release frame of a button
+  which was pressed over void/underlying app, which is consistent/needed to allow the
+  mouse up event of a drag over void/underlying app to catch release. (#1392) [@Moka42]
+- IO: Added io.ClearInputMouse() to clear mouse state. (#4921)
+- Windows: BeginChild(): fixed a glitch when during a resize of a child window which is
+  tightly close to the boundaries of its parent (e.g. with zero WindowPadding), the child
+  position could have temporarily be moved around by erroneous padding application. (#7706)
+- TabBar, Style: added ImGuiTabBarFlags_DrawSelectedOverline option to draw an horizontal
+  line over selected tabs to increase visibility. This is used by docking.
+  Added corresponding ImGuiCol_TabSelectedOverline and ImGuiCol_TabDimmedSelectedOverline colors.
+- Tables: added TableGetHoveredColumn() to public API, as an alternative to testing for
+  'TableGetColumnFlags(column) & ImGuiTableColumnFlags_IsHovered' on each column. (#3740)
+- Disabled, Inputs: fixed using Shortcut() or SetNextItemShortcut() within a disabled block
+  bypassing the disabled state. (#7726)
+- Disabled: Reworked 1.90.8 behavior of Begin() not inheriting current BeginDisabled() state,
+  to make it that only tooltip windows are temporarily clearing it. (#211, #7640)
+- Drags: added ImGuiSliderFlags_WrapAround flag for DragInt(), DragFloat() etc. (#7749)
+- Drag and Drop: BeginDragDropSource() with ImGuiDragDropFlags_SourceExtern sets
+  active id so a multi-frame extern source doesn't interfere with hovered widgets. (#143)
+- Drag and Drop: BeginDragDropSource() with ImGuiDragDropFlags_SourceExtern does not assume
+  a mouse button being pressed. Facilitate implementing cross-context drag and drop. (#143)
+- Drag and Drop: Added ImGuiDragDropFlags_PayloadNoCrossContext/_PayloadNoCrossProcess flags
+  as metadata to specify that a payload may not be copied outside the context/process by
+  some logic aiming to copy payloads around.
+- Drag and Drop: Fixes an issue when elapsing payload would be based on last payload
+  frame instead of last drag source frame, which makes a difference if not resubmitting
+  payload every frame. (#143)
+- Debug Tools: Metrics/Debugger: Browsing a Storage perform hover lookup on identifier.
+- Viewports: Backported 'void* ImGuiViewport::PlatformHandle' from docking branch for
+  use by backends.
+- imgui_freetype: Fixed divide by zero while handling FT_PIXEL_MODE_BGRA glyphs. (#7267, #3369)
+- Backends: OpenGL2, OpenGL3: ImGui_ImplOpenGL3_NewFrame() recreates font texture if it
+  has been destroyed by ImGui_ImplOpenGL3_DestroyFontsTexture(). (#7748) [@mlauss2]
+- Backends: SDL3: Update for API removal of keysym field in SDL_KeyboardEvent. (#7728)
+- Backends: SDL3: Update for SDL_StartTextInput()/SDL_StopTextInput() API changes. (#7735)
+- Backends: SDL3: Update for SDL_SetTextInputRect() API rename. (#7760, #7754) [@maxortner01]
+- Backends: SDLRenderer3: Update for SDL_RenderGeometryRaw() API changes. (SDL#9009).
+- Backends: Vulkan: Remove Volk/ from volk.h #include directives. (#7722, #6582, #4854)
+  [@martin-ejdestig]
+- Examples: SDL3: Remove use of SDL_HINT_IME_NATIVE_UI since new SDL_HINT_IME_IMPLEMENTED_UI
+  values has a more suitable default for our case case.
+- Examples: GLFW+Vulkan, SDL+Vulkan: handle swap chain resize even without Vulkan
+  returning VK_SUBOPTIMAL_KHR, which doesn't seem to happen on Wayland. (#7671)
+  [@AndreiNego, @ocornut]
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.8 (Released 2024-06-06)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.8
+
+Breaking changes:
+
+- Reordered various ImGuiInputTextFlags values. This should NOT be breaking unless
+  you are using generated headers that have values not matching the main library.
+- Removed ImGuiButtonFlags_MouseButtonDefault_ = ImGuiButtonFlags_MouseButtonLeft
+  from imgui.h, was mostly unused and misleading.
+
+Other changes:
+
+- Inputs: fixed IsMouseClicked(..., repeat=true); broken in 1.90.7 on 2024/05/22.
+  (due to an internal api parameter swap, repeat wouldn't be honored and
+  ownership would be accidentally checked even though this api is meant to not
+  check ownership). (#7657) [@korenkonder]
+- Windows: fixed altering FramePadding mid-frame not correctly affecting logic
+  responsible for honoring io.ConfigWindowsMoveFromTitleBarOnly. (#7576, #899)
+- Scrollbar: made scrolling logic more standard: clicking above or below the
+  grab scrolls by one page, holding mouse button repeats scrolling. (#7328, #150)
+- Scrollbar: fixed miscalculation of vertical scrollbar visibility when required
+  solely by the presence of an horizontal scrollbar. (#1574)
+- InputScalar, InputInt, InputFloat: added ImGuiInputTextFlags_ParseEmptyRefVal
+  to parse an empty field as zero-value. (#7305) [@supermerill, @ocornut]
+- InputScalar, InputInt, InputFloat: added ImGuiInputTextFlags_DisplayEmptyRefVal
+  to display a zero-value as empty. (#7305) [@supermerill, @ocornut]
+- Popups: fixed an issue preventing to close a popup opened over a modal by clicking
+  over void (it required clicking over the visible part of the modal). (#7654)
+- Tables: fixed an issue where ideal size reported to parent container wouldn't
+  correctly take account of inner scrollbar, affecting potential auto-resize of
+  parent container. (#7651)
+- Tables: fixed a bug where after disabling the ScrollY flag for a table,
+  previous scrollbar width would be accounted for. (#5920)
+- Combo: simplified Combo() API uses a list clipper (due to its api it wasn't
+  previously trivial before we added clipper.IncludeItemByIndex() function).
+- Disabled: nested tooltips or other non-child window within a BeginDisabled()
+  block disable the disabled state. (#211, #7640)
+- Misc: made ImGuiDir and ImGuiSortDirection stronger-typed enums.
+- Backends: SDL3: Update for SDL_SYSTEM_CURSOR_xxx api renames. (#7653)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.7 (Released 2024-05-27)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.7
+
+Breaking changes:
+
+- Inputs: on macOS X, Cmd and Ctrl keys are now automatically swapped by io.AddKeyEvent(),
+  as this naturally align with how macOS X uses those keys. (#2343, #4084, #5923, #456)
+  - Effectively it means that e.g. ImGuiMod_Ctrl | ImGuiKey_C is a valid idiomatic shortcut
+    for both Windows and Mac style users.
+  - It shouldn't really affect your code unless you had explicit/custom shortcut swapping in
+    place for macOS X apps in your input logic.
+  - Removed ImGuiMod_Shortcut which was previously dynamically remapping to Ctrl or Cmd/Super.
+    It is now unnecessary to specific cross-platform idiomatic shortcuts.
+    Kept symbols redirecting ImGuiMod_Shortcut to ImGuiMod_Ctrl (will obsolete).
+- Commented out obsolete symbols renamed in 1.88 (May 2022):
+    CaptureKeyboardFromApp() -> SetNextFrameWantCaptureKeyboard()
+    CaptureMouseFromApp()    -> SetNextFrameWantCaptureMouse()
+- Backends: SDL_Renderer2/SDL_Renderer3: ImGui_ImplSDLRenderer2_RenderDrawData() and
+  ImGui_ImplSDLRenderer3_RenderDrawData() now takes a SDL_Renderer* parameter. This was previously
+  overlooked from the API but it will allow eventual support for multi-viewports.
+
+Other changes:
+
+- Windows: BeginChild(): fixed visibility of fully clipped child windows and tables to Test Engine.
+- Windows: BeginChild(): fixed auto-fit calculation when using either (not both) ResizeX/ResizeY
+  and double-clicking on a border. Calculation incorrectly didn't always account for scrollbar as
+  it assumed the other axis would also be auto-fit. (#1710)
+- Inputs: added shortcut and routing system in public API. (#456, #2637) [BETA]
+  - The general idea is that several callers may register interest in a shortcut, and only one owner gets it.
+    - in Parent: call Shortcut(Ctrl+S)    // When Parent is focused, Parent gets the shortcut.
+    - in Child1: call Shortcut(Ctrl+S)    // When Child1 is focused, Child1 gets the shortcut (Child1 overrides Parent shortcuts)
+    - in Child2: no call                  // When Child2 is focused, Parent gets the shortcut.
+    The whole system is order independent, so if Child1 makes its calls before Parent, results will be identical.
+    This is an important property as it facilitate working with foreign code or larger codebase.
+  - Added Shortcut() function:
+    e.g. Using ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_C); with default policy:
+    - checks that CTRL+C is pressed,
+    - and that current window is in focus stack,
+    - and that no other requests for CTRL+C have been made from higher priority locations
+      (e.g. deeper in the window/item stack).
+  - Added SetNextItemShortcut() to set a shortcut to locally or remotely press or activate
+    an item (depending on specified routing policy: using ImGuiInputFlags_RouteGlobal the item
+    shortcut may be executed even if its window is not in focus stack).
+    Items like buttons are not fully activated, in the sense that they get pressed but another
+    active item, e.g. InputText() won't be deactivated.
+  - Added routing policies for Shortcut(), SetNextItemShortcut(): (#456, #2637)
+    - ImGuiInputFlags_RouteFocused: focus stack route (default)
+    - ImGuiInputFlags_RouteActive: only route to active item
+    - ImGuiInputFlags_RouteGlobal: route globally, unless a focus route claim shame shortcut.
+    - ImGuiInputFlags_RouteAlways: no routing submission, no routing check.
+  - Added other shortcut/routing options: (#456, #2637)
+    - ImGuiInputFlags_Repeat: for use by Shortcut() and by upcoming rework of various
+      input functions (which are still internal for now).
+    - ImGuiInputFlags_Tooltip: for SetNextItemShortcut() to show a tooltip when hovering item.
+    - ImGuiInputFlags_RouteOverFocused: global route takes priority over focus route.
+    - ImGuiInputFlags_RouteOverActive: global route takes priority over active item.
+    - ImGuiInputFlags_RouteUnlessBgFocused: global route disabled if no imgui window focused.
+    - ImGuiInputFlags_RouteFromRootWindow: route evaluated from the point of view of root window rather than current window.
+- Inputs: (OSX) Fixes variety of code which inconsistently required using Ctrl instead of Cmd.
+  - e.g. Drags/Sliders now use Cmd+Click to input a value. (#4084)
+  - Some shortcuts still uses Ctrl on Mac: e.g. Ctrl+Tab to switch windows. (#4828)
+- Inputs: (OSX) Ctrl+Left Click alias as a Right click. (#2343) [@haldean, @ocornut]
+- Inputs: Fixed ImGui::GetKeyName(ImGuiKey_None) from returning "N/A" or "None" depending
+  on value of IMGUI_DISABLE_OBSOLETE_KEYIO. It always returns "None".
+- Nav: fixed holding Ctrl or gamepad L1 from not slowing down keyboard/gamepad tweak speed.
+  Broken during a refactor refactor for 1.89. Holding Shift/R1 to speed up wasn't broken.
+- Tables: fixed cell background of fully clipped row overlapping with header. (#7575, #7041) [@prabuinet]
+- Demo: Added "Inputs & Focus -> Shortcuts" section. (#456, #2637)
+- Demo: Documents: Added shortcuts and renaming tabs/documents. (#7233)
+- Examples: Win32+DX9,DX10,DX11,DX12: rework main loop to handle minimization and screen
+  locking without burning resources by running unthrottled code. (#2496, #3907, #6308, #7615)
+- Backends: all backends + demo now call IMGUI_CHECKVERSION() to verify ABI compatibility between caller
+  code and compiled version of Dear ImGui. If you get an assert it most likely mean you have a build issue,
+  read comments near the assert. (#7568)
+- Backends: Win32: undo an assert introduced in 1.90.6 which didn't allow WndProc
+  handler to be called before backend initialization. Because of how ::CreateWindow()
+  calls in WndProc this is facilitating. (#6275) [@MennoVink]
+- Backends, Examples: SDL3: updates for latest SDL3 API changes. (#7580) [@kuvaus, @ocornut]
+
+Breaking changes IF you were using imgui_internal.h versions of Shortcut() or owner-aware
+versions of IsKeyPressed(), IsKeyChordPressed(), IsMouseClicked() prior to this version:
+
+- Inputs (Internals): Renamed ImGuiKeyOwner_None to ImGuiKeyOwner_NoOwner, to make use more
+  explicit and reduce confusion with the fact it is a non-zero value and cannot be a default.
+- Inputs (Internals): Renamed symbols global routes:
+      Renamed ImGuiInputFlags_RouteGlobalLow  -> ImGuiInputFlags_RouteGlobal (this is the suggested global route)
+      Renamed ImGuiInputFlags_RouteGlobal     -> ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_RouteOverFocused
+      Renamed ImGuiInputFlags_RouteGlobalHigh -> ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_RouteOverFocused | ImGuiInputFlags_RouteOverActive
+- Inputs (Internals): Shortcut(), SetShortcutRouting(): swapped last two parameters order
+  in function signatures:
+      Before: Shortcut(ImGuiKeyChord key_chord, ImGuiID owner_id = 0, ImGuiInputFlags flags = 0);
+      After:  Shortcut(ImGuiKeyChord key_chord, ImGuiInputFlags flags = 0, ImGuiID owner_id = 0);
+- Inputs (Internals): owner-aware versions of IsKeyPressed(), IsKeyChordPressed(), IsMouseClicked():
+  swapped last two parameters order in function signatures:
+      Before: IsKeyPressed(ImGuiKey key, ImGuiID owner_id, ImGuiInputFlags flags = 0);
+      After:  IsKeyPressed(ImGuiKey key, ImGuiInputFlags flags, ImGuiID owner_id = 0);
+      Before: IsMouseClicked(ImGuiMouseButton button, ImGuiID owner_id, ImGuiInputFlags flags = 0);
+      After:  IsMouseClicked(ImGuiMouseButton button, ImGuiInputFlags flags, ImGuiID owner_id = 0);
+- For several reasons those changes makes sense. They were all made before making some of
+  those API public. Only past users of imgui_internal.h with the extra parameters will be affected.
+  Added asserts for valid flags in various functions to detect _some_ misuses, BUT NOT ALL.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.6 (Released 2024-05-08)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.6
+
+Breaking changes:
+
+- TreeNode: Fixed a layout inconsistency when using a empty/hidden label followed
+  by a SameLine() call. (#7505, #282)
+     Before: TreeNode("##Hidden"); SameLine(); Text("Hello");
+             // This was actually incorrect! BUT appeared to look ok with the default style
+             // where ItemSpacing.x == FramePadding.x * 2 (it didn't look aligned otherwise).
+     After:  TreeNode("##Hidden"); SameLine(0, 0); Text("Hello");
+             // This is correct for all values in style.
+  With the fix, IF you were successfully using TreeNode("")+SameLine(); you will now
+  have extra spacing between your TreeNode and the following item. You'll need to change
+  the SameLine() call to SameLine(0,0) to remove this extraneous spacing.
+  This seemed like the more sensible fix that's not making things less consistent.
+  (Note: when using this idiom you are likely to also use ImGuiTreeNodeFlags_SpanAvailWidth).
+
+Other changes:
+
+- Windows: Changed default ClipRect to extend to windows' left and right borders,
+  instead of adding arbitrary WindowPadding.x * 0.5f space on left and right.
+  That ClipRect half-padding was arbitrary/confusing and inconsistent with Y axis.
+  It also made it harder to draw items covering whole window without pushing an
+  extended ClipRect. Some items near windows left and right edge that used to be clipped
+  may be partly more visible. (#3312, #7540, #3756, #6170, #6365)
+- Windows: Fixed subsequent Begin() append calls from setting last item information
+  for title bar, making it impossible to use IsItemHovered() on a Begin()-to-append,
+  and causing issue bypassing hover detection on collapsed windows. (#7506, #823)
+- Fonts: Fixed font ascent and descent calculation when a font hits exact integer values.
+  It is possible that some prior manual use of ImFontConfig::GlyphOffset may become
+  duplicate with this fix. (#7399, #7404) [@GamingMinds-DanielC]
+- TreeNode: Added ImGuiTreeNodeFlags_SpanTextWidth to make hitbox and highlight only
+  cover the label. (#6937) [@dimateos]
+- Tables: Angled headers: fixed multi-line label display when angle is flipped. (#6917)
+- Tables: Angled headers: added style.TableAngledHeadersTextAlign and corresponding
+  ImGuiStyleVar_TableAngledHeadersTextAlign variable. Default to horizontal center. (#6917)
+  [@thedmd, @ocornut]
+- ProgressBar: Added support for indeterminate progress bar by passing an animated
+  negative fraction, e.g. ProgressBar(-1.0f * GetTime()). (#5316, #5370, #1901)[@gan74]
+- Text, DrawList: Improved handling of long single-line wrapped text. Faster and
+  mitigate issues with reading vertex indexing limits with 16-bit indices. (#7496, #5720)
+- Backends: OpenGL3: Detect ES3 contexts on desktop based on version string,
+  to e.g. avoid calling glPolygonMode() on them. (#7447) [@afraidofdark, @ocornut]
+- Backends: OpenGL3: Update loader for Linux to support EGL/GLVND. (#7562) [@ShadowNinja, @vanfanel]
+- Backends: Vulkan: Added convenience support for Volk via IMGUI_IMPL_VULKAN_USE_VOLK define.
+  (you could always use IMGUI_IMPL_VULKAN_NO_PROTOTYPES + ImGui_ImplVulkan_LoadFunctions() as well).
+  (#6582, #4854) [@adalsteinnh, @kennyalive, @ocornut]
+- Backends: SDL3: Fixed text inputs. Re-enable calling SDL_StartTextInput()/SDL_StopTextInput()
+  as SDL3 no longer enables it by default. (#7452, #6306, #6071, #1953) [@Green-Sky]
+- Examples: GLFW+Vulkan, SDL+Vulkan: Added optional support for Volk. (#6582, #4854)
+- Examples: GLFW+WebGPU: Added support for WebGPU-native/Dawn (#7435, #7132) [@eliasdaler, @Zelif]
+- Examples: GLFW+WebGPU: Renamed example_emscripten_wgpu/ to example_glfw_wgpu/. (#7435, #7132)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.5 (Released 2024-04-11)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.5
+
+Breaking changes:
+
+- More formally obsoleted GetKeyIndex() when IMGUI_DISABLE_OBSOLETE_FUNCTIONS is set.
+  It has been unnecessary and a no-op since 1.87 (it returns the same value as passed
+  when used with a 1.87+ backend using io.AddKeyEvent() function). (#4921)
+  - IsKeyPressed(GetKeyIndex(ImGuiKey_XXX)) --> IsKeyPressed(ImGuiKey_XXX)
+- ImDrawList: Merged the radius_x/radius_y parameters in AddEllipse(), AddEllipseFilled()
+  and PathEllipticalArcTo() into a single ImVec2 parameter. Exceptionally, because those
+  functions were added recently in 1.90, we are not adding inline redirection functions.
+  The transition is easy and should affect few users. (#2743, #7417) [@cfillion]
+
+Other changes:
+
+- Windows: Scrollbar visibility decision uses current size when both size and contents
+  size are submitted by API. (#7252)
+- Windows: Double-click to collapse may be disabled via key-ownership mechanism. (#7369)
+- Windows: BeginChild(): Extend outer resize borders to the edges when there are no corner
+  grips. Essentially affects resizable child windows. (#7440, #1710) [@cfillion]
+- Windows: BeginChild(): Resizing logic for child windows evaluates whether per-axis clamping
+  should be applied based on parent scrollbars, not child scrollbars. (#7440, #1710) [@cfillion]
+  Adjust those resizing limits to match window padding rather than inner clipping rectangle.
+- Tables: Fixed auto-width columns when using synced-instances of same table, width of
+  one instance would bleed into next one instead of sharing their widths. (#7218)
+- Tables: Angled headers: fixed border hit box extending beyond when used within
+  non-scrollable tables. (#7416) [@cfillion]
+- Tables: Angled headers: fixed borders not moving back up after TableAngleHeadersRow()
+  stops being called. (#7416) [@cfillion]
+- Tables: Angled headers: rounding header size to nearest integers, fixes some issues
+  when using clipper.
+- Menus, Popups: Fixed an issue where sibling menu popups re-opening in successive
+  frames would erroneously close the window. While it is technically a popup issue
+  it would generally manifest when fast moving the mouse bottom to top in a sub-menu.
+  (#7325, #7287, #7063)
+- ProgressBar: Fixed passing fraction==NaN from leading to a crash. (#7451)
+- ListBox: Fixed text-baseline offset when using SameLine()+Text() after a labeled ListBox().
+- Drags, Sliders, Inputs: Fixed io.PlatformLocaleDecimalPoint decimal point localization
+  feature not working regression from 1.90.1. (#7389, #6719, #2278) [@GamingMinds-DanielC]
+- Style: Added ImGuiStyleVar_TabBorderSize, ImGuiStyleVar_TableAngledHeadersAngle for
+  consistency. (#7411) [@cfillion]
+- DrawList: Added AddConcavePolyFilled(), PathFillConcave() concave filling. (#760) [@thedmd]
+  Note that only simple polygons (no self-intersections, no holes) are supported.
+- DrawList: Allow AddText() to accept null ranges. (#3615, 7391)
+- Docs: added more wiki links to headers of imgui.h/imgui.cpp to facilitate discovery
+  of interesting resources, because github doesn't allow Wiki to be crawled by search engines.
+  - This is the main wiki: https://github.com/ocornut/imgui/wiki
+  - This is the crawlable version: https://github-wiki-see.page/m/ocornut/imgui/wiki
+    Adding a link to the crawlable version, even though it is not intended for humans,
+    to increase its search rank.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.4 (Released 2024-02-22)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.4
+
+Other changes:
+
+- Nav: Fixed SetKeyboardFocusHere() or programmatic tabbing API from not working on
+  windows with the ImGuiWindowFlags_NoNavInputs flag (regression in 1.90.2, which
+  among other things broke imgui_memory_editor).
+- Menus, Popups: Fixed an issue where hovering a parent-menu upward would
+  erroneously close the window. (#7325, #7287, #7063)
+- Popups: Fixed resizable popup minimum size being too small. Standardized minimum
+  size logic. (#7329).
+- Modals: Temporary changes of ImGuiCol_ModalWindowDimBg are properly handled by
+  BeginPopupModal(). (#7340)
+- Tables: Angled headers: fixed support for multi-line labels. (#6917)
+- Tables: Angled headers: various fixes to accurately handle CellPadding changes. (#6917)
+- Tables: Angled headers: properly registers horizontal component of angled headers
+  for auto-resizing of columns. (#6917)
+- Tables: Angled headers: fixed TableAngledHeadersRow() incorrect background fill
+  drawn too low, particularly visible with tables that have no scrolling. (#6917)
+- ProgressBar: Fixed a minor tessellation issue when rendering rounded progress bars,
+  where in some situations the rounded section wouldn't follow regular tessellation rules.
+- Debug Tools: Item Picker: Promoted ImGui::DebugStartItemPicker() to public API. (#2673)
+- Debug Tools: Item Picker: Menu entry visible in Demo->Tools but greyed out unless
+  io.ConfigDebugIsDebuggerPresent is set. (#2673)
+- Misc: Added optional alpha multiplier parameter to GetColorU32(ImU32) variant.
+- Demo: Custom Rendering: better demonstrate PathArcTo(), PathBezierQuadraticCurveTo(),
+  PathBezierCubicCurveTo(), PathStroke(), PathFillConvex() functions.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.3 (Released 2024-02-14)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.3
+
+Breaking changes:
+
+- Backends: SDL2: Removed obsolete ImGui_ImplSDL2_NewFrame(SDL_Window*) signature which
+  was obsoleted in 1.84. Calling ImGui_ImplSDL2_NewFrame() is fine.
+- Backends: Vulkan: Moved RenderPass parameter from ImGui_ImplVulkan_Init() function to
+  ImGui_ImplVulkan_InitInfo structure. Not required when using dynamic rendering. (#7308) [@shawnhatori]
+- Backends: Vulkan: Using dynamic rendering now require filling the PipelineRenderingCreateInfo
+  structure in ImGui_ImplVulkan_InitInfo, allowing to configure color/depth/stencil formats.
+  Removed ColorAttachmentFormat field previously provided for dynamic rendering.
+  (#7166, #6855, #5446, #5037) [@shawnhatori]
+
+Other changes:
+
+- Menus, Popups: Fixed menus and popups with ChildWindow flag erroneously not displaying
+  a scrollbar when contents is over parent viewport size. (#7287, #7063) [@ZingBallyhoo]
+- Backends: SDL2, SDL3: Handle gamepad disconnection + fixed increasing gamepad reference
+  counter continuously. Added support for multiple simultaneous gamepads.
+  Added ImGui_ImplSDL2_SetGamepadMode()) function to select whether to automatically pick
+  first available gamepad, all gamepads, or specific gamepads.
+  (#3884, #6559, #6890, #7180) [@ocornut, @lethal-guitar, @wn2000, @bog-dan-ro]
+- Backends: SDL3: Fixed gamepad handling. (#7180) [@bog-dan-ro]
+- Backends: SDLRenderer3: query newly added SDL_RenderViewportSet() to not restore
+  a wrong viewport if none was initially set.
+- Backends: DirectX9: Using RGBA format when allowed by the driver to avoid CPU side
+  conversion. (#6575) [@Demonese]
+- Internals: Fixed ImFileOpen not working before context is created, preventing creation
+  of a font atlas before main context creation. (#7314, #7315) [@PathogenDavid, @ocornut]
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.2 (Released 2024-02-09)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.2
+
+Breaking changes:
+
+- Commented out ImGuiIO::ImeWindowHandle obsoleted in 1.87 in favor of writing
+  to 'void* ImGuiViewport::PlatformHandleRaw'.
+- Backends: WebGPU: ImGui_ImplWGPU_Init() now takes a ImGui_ImplWGPU_InitInfo structure
+  instead of variety of parameters, allowing for easier further changes. (#7240)
+
+Other changes:
+
+- Nav: keyboard/gamepad activation mark widgets as held to give better visual feedback.
+- Nav: tweak to logic marking navigated item as hovered when using keyboard, allowing
+  the hover highlight to stay even while another item is activated.
+- Nav: Fixed SetKeyboardFocusHere() not working when current nav focus is in different scope,
+  regression from 1.90.1 related to code scoping Tab presses to local scope. (#7226) [@bratpilz]
+- Nav: Fixed pressing Escape while in a child window with _NavFlattened flag. (#7237)
+- Nav: Improve handling of Alt key to toggle menu so that key ownership may be claimed on
+  individual left/right alt key without interfering with the other.
+- Nav, Menus: Fixed click on a BeginMenu() followed by right-arrow from making the child menu
+  reopen and flicker (using ImGuiPopupFlags_NoReopen).
+- Nav: ImGuiWindowFlags_NoNavInputs is tested during scoring so NavFlattened windows can use it.
+- Popups: OpenPopup(): added ImGuiPopupFlags_NoReopen flag to specifically not close and reopen
+  a popup when it is already open. (#1497, #1533)
+  (Note that this differs from specific handling we already have in place for the case of calling
+  OpenPopup() repeatedly every frame: we already didn't reopen in that specific situation, otherwise
+  the effect would be very disastrous in term of confusion, as reopening would steal focus).
+- Popups: Slight change to popup closing logic (e.g. after focusing another window) which skipped
+  over popups that are also child windows.
+- Combo: Fixed not reusing windows optimally when used inside a popup stack.
+- Debug Tools: Metrics: Fixed debug break in SetShortcutRouting() not handling ImGuiMod_Shortcut redirect.
+- Debug Tools: Metrics: Improved Monitors and Viewports minimap display. Highlight on hover.
+- Debug Tools: Debug Log: Added "Input Routing" logging.
+- Debug Tools: Added "nop" to IM_DEBUG_BREAK macro on GCC to work around GDB bug (#7266) [@Peter0x44]
+- Backends: Vulkan: Fixed vkAcquireNextImageKHR() validation errors in VulkanSDK 1.3.275 by
+  allocating one extra semaphore than in-flight frames. (#7236) [@mklefrancois]
+- Backends: Vulkan: Fixed vkMapMemory() calls unnecessarily using full buffer size. (#3957)
+- Backends: Vulkan: Fixed handling of ImGui_ImplVulkan_InitInfo::MinAllocationSize field. (#7189, #4238)
+- Backends: WebGPU: Added ImGui_ImplWGPU_InitInfo::PipelineMultisampleState. (#7240)
+- Backends: WebGPU: Filling all WGPUDepthStencilState fields explicitly as a recent Dawn
+  update stopped setting default values. (#7232) [@GrigoryGraborenko]
+- Backends: WebGPU: Fixed pipeline layout leak. (#7245) [@rajveermalviya]
+- Backends: OpenGL3: Backup and restore GL_PIXEL_UNPACK_BUFFER. (#7253)
+- Internals: Many improvements related to yet unpublicized shortcut routing and input ownership systems.
+- Internals: InputText: Added internal helpers to force reload of user-buf when active. (#2890) [@kudaba, @ocornut]
+  Often requested in some form (#6962, #5219, #3290, #4627, #5054, #3878, #2881, #1506, #1216, #968),
+  and useful for interactive completion/suggestions popups (#2057, #718)
+
 
 -----------------------------------------------------------------------
  VERSION 1.90.1 (Released 2024-01-10)
@@ -90,6 +919,9 @@ Other changes:
 - Color Editors:
   - ColorEdit: Layout tweaks for very small sizes. (#7120, #7121)
   - ColorPicker: Fixed saturation/value cursor radius not scaling properly.
+- Tabs: Added ImGuiTabItemFlags_NoAssumedClosure to enable app to react on closure attempt,
+  without having to draw an unsaved document marker (ImGuiTabItemFlags_UnsavedDocument sets
+  _NoAssumedClosure automatically). (#7084)
 - Debug Tools:
   - Added io.ConfigDebugIsDebuggerPresent option. When enabled, this adds buttons in various
     locations of Metrics/Debugger to manually request a debugger break:
@@ -155,6 +987,7 @@ Breaking changes:
       Before:  BeginChild("Name", size, false)
       After:   BeginChild("Name", size) or BeginChild("Name", 0) or BeginChild("Name", size, ImGuiChildFlags_None)
    Existing code will still work as 'ImGuiChildFlags_Border == true', but you are encouraged to update call sites.
+   **AMEND FROM THE FUTURE: from 1.91.1, 'ImGuiChildFlags_Border' is called 'ImGuiChildFlags_Borders'**
  - BeginChild(): Added child-flag ImGuiChildFlags_AlwaysUseWindowPadding as a replacement for
    the window-flag ImGuiWindowFlags_AlwaysUseWindowPadding: the feature only ever made sense
    for use with BeginChild() anyhow, passing it to Begin() had no effect. Now that we accept
@@ -204,6 +1037,7 @@ Other changes:
     child windows from the bottom/right border (toward layout direction). Resized child windows
     settings are saved and persistent in .ini file. (#1710)
   - BeginChild(): Added ImGuiChildFlags_Border as a replacement for 'bool border = true' parameter.
+    **AMEND FROM THE FUTURE: from 1.91.1, 'ImGuiChildFlags_Border' is called 'ImGuiChildFlags_Borders'**
   - BeginChild(): Added ImGuiChildFlags_AutoResizeX and ImGuiChildFlags_AutoResizeY to auto-resize
     on one axis, while generally providing a size on the other axis. (#1666, #1395, #1496, #1710)
     e.g. BeginChild("name", {-FLT_MIN, 0.0f}, ImGuiChildFlags_AutoResizeY);
@@ -256,7 +1090,7 @@ Other changes:
     with ImGuiDragDropFlags_AcceptNoPreviewTooltip and submitting a tooltip manually.
 - Tables:
   - Added angled headers support. You need to set ImGuiTableColumnFlags_AngledHeader on selected
-    columns and call TableAngledHeadersRow(). Added style.TableAngledHeadersAngle style option.
+    columns and call TableAngledHeadersRow(). Added style.TableAngledHeadersAngle style option. (#6917)
   - Added ImGuiTableFlags_HighlightHoveredColumn flag, currently highlighting column header.
   - Fixed an edge-case when no columns are visible + table scrollbar is visible + user
     code is always testing return value of TableSetColumnIndex() to coarse clip. With an active
@@ -413,7 +1247,7 @@ Breaking changes:
 
 - IO: Obsoleted io.ClearInputCharacters() (added in 1.47) as it now ambiguous
   and often incorrect/misleading considering the existence of a higher-level
-  input queue. This is automatically cleared by io.ClearInputsKeys(). (#4921)
+  input queue. This is automatically cleared by io.ClearInputKeys(). (#4921)
 - ImDrawData: CmdLists[] array is now owned, changed from 'ImDrawList**' to
   'ImVector<ImDrawList*>'. Majority of users shouldn't be affected, but you
   cannot compare to NULL nor reassign manually anymore.
@@ -451,10 +1285,10 @@ Other changes:
   will slightly reduce scrollbar size. Generally we tried to make it that window
   border size has no incidence on layout but this can't work with thick borders. (#2522)
 - IO: Added io.ClearEventsQueue() to clear incoming inputs events. (#4921)
-  May be useful in conjunction with io.ClearInputsKeys() if you need to clear
+  May be useful in conjunction with io.ClearInputKeys() if you need to clear
   both current inputs state and queued events (e.g. when using blocking native
   dialogs such as Windows's ::MessageBox() or ::GetOpenFileName()).
-- IO: Changed io.ClearInputsKeys() specs to also clear current frame character buffer
+- IO: Changed io.ClearInputKeys() specs to also clear current frame character buffer
   (what now obsoleted io.ClearInputCharacters() did), as this is effectively the
   desirable behavior.
 - Misc: Added IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION config macro to disable
@@ -583,7 +1417,7 @@ Breaking changes:
    - ListBoxFooter()  -> use EndListBox()
    - Note how two variants of ListBoxHeader() existed. Check commented versions in imgui.h for refeence.
 - Backends: SDL_Renderer: Renamed 'imgui_impl_sdlrenderer.h/cpp' to 'imgui_impl_sdlrenderer2.h/cpp',
-  in order to accomodate for upcoming SDL3 and change in its SDL_Renderer API. (#6286)
+  in order to accommodate for upcoming SDL3 and change in its SDL_Renderer API. (#6286)
 - Backends: GLUT: Removed call to ImGui::NewFrame() from ImGui_ImplGLUT_NewFrame().
   It needs to be called from the main app loop, like with every other backends. (#6337) [@GereonV]
 
@@ -1146,7 +1980,7 @@ Other Changes:
 - Backends: Metal: Use __bridge for ARC based systems. (#5403) [@stack]
 - Backends: Metal: Add dispatch synchronization. (#5447) [@luigifcruz]
 - Backends: Metal: Update deprecated property 'sampleCount'->'rasterSampleCount'. (#5603) [@dcvz]
-- Backends: Vulkan: Added experimental ImGui_ImplVulkan_RemoveTexture() for api symetry. (#914, #5738).
+- Backends: Vulkan: Added experimental ImGui_ImplVulkan_RemoveTexture() for api symmetry. (#914, #5738).
 - Backends: WebGPU: fixed rendering when a depth buffer is enabled. (#5869) [@brainlag]
 
 
@@ -1919,7 +2753,7 @@ Other Changes:
   alpha compositing and transparent windows. (#2766, #3447 etc.).
 - Backends: OpenGL, Vulkan, DX9, DX10, DX11, DX12, Metal, WebGPU, Allegro: Rework blending equation to
   preserve alpha in output buffer (using SrcBlendAlpha = ONE, DstBlendAlpha = ONE_MINUS_SRC_ALPHA consistently
-  accross all backends), facilitating compositing of the output buffer with another buffer.
+  across all backends), facilitating compositing of the output buffer with another buffer.
   (#2693, #2764, #2766, #2873, #3447, #3813, #3816) [@ocornut, @thedmd, @ShawnM427, @Ubpa, @aiekick]
 - Backends: DX9: Fix to support IMGUI_USE_BGRA_PACKED_COLOR. (#3844) [@Xiliusha]
 - Backends: DX9: Fix to support colored glyphs, using newly introduced 'TexPixelsUseColors' info. (#3844)
@@ -3530,8 +4364,6 @@ Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v
 
 Breaking Changes:
 
-- Tabs: Added ImGuiTabItemFlags_NoAssumedClosure to enable app to react on closure attempt, without having to draw
-  an unsaved document marker (ImGuiTabItemFlags_UnsavedDocument sets _NoAssumedClosure automatically). (#7084)
 - DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally
   any more. If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
   To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d,
@@ -5330,7 +6162,7 @@ Other Changes:
  VERSION 1.08 (2014-08-25)
 -----------------------------------------------------------------------
 
-Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.09
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.08
 
 - Fixed ImGuiTextFilter trimming of leading/trailing blanks.
 - Fixed file descriptor leak on LoadSettings() failure.

external/imgui/imgui/docs/CONTRIBUTING.md

@@ -58,7 +58,7 @@ Steps:
 - Be mindful that messages are being sent to the mailbox of "Watching" users. Try to proofread your messages before sending them. Edits are not seen by those users unless they browse the site.
 
 **Some unfortunate words of warning**
-- If you are involved in cheating schemes (e.g. DLL injection) for competitive online multiplayer games, please don't post here. We won't answer and you will be blocked. It doesn't matter if your question relates to said project. We've had too many of you and need to project our time and sanity.
+- If you are involved in cheating schemes (e.g. DLL injection) for competitive online multiplayer games, please don't post here. We won't answer and you will be blocked. It doesn't matter if your question relates to said project. We've had too many of you and need to protect our time and sanity.
 - Due to frequent abuse of this service from the aforementioned users, if your GitHub account is anonymous and was created five minutes ago please understand that your post will receive more scrutiny and incomplete questions will be harshly dismissed.
 
 If you have been using Dear ImGui for a while or have been using C/C++ for several years or have demonstrated good behavior here, it is ok to not fulfill every item to the letter. Those are guidelines and experienced users or members of the community will know which information is useful in a given context.

external/imgui/imgui/docs/EXAMPLES.md

@@ -35,46 +35,13 @@ At shutdown:
   call ImGui::DestroyContext()
 ```
 
-Example (using [backends/imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp) + [backends/imgui_impl_dx11.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_dx11.cpp)):
+Main resource:
+- Read **[Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) wiki guide** for detailed examples of how to integrate Dear ImGui in an existing application.
 
-```cpp
-// Create a Dear ImGui context, setup some options
-ImGui::CreateContext();
-ImGuiIO& io = ImGui::GetIO();
-io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable some options
-
-// Initialize Platform + Renderer backends (here: using imgui_impl_win32.cpp + imgui_impl_dx11.cpp)
-ImGui_ImplWin32_Init(my_hwnd);
-ImGui_ImplDX11_Init(my_d3d_device, my_d3d_device_context);
-
-// Application main loop
-while (true)
-{
-    // Beginning of frame: update Renderer + Platform backend, start Dear ImGui frame
-    ImGui_ImplDX11_NewFrame();
-    ImGui_ImplWin32_NewFrame();
-    ImGui::NewFrame();
-
-    // Any application code here
-    ImGui::Text("Hello, world!");
-
-    // End of frame: render Dear ImGui
-    ImGui::Render();
-    ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
-
-    // Swap
-    g_pSwapChain->Present(1, 0);
-}
-
-// Shutdown
-ImGui_ImplDX11_Shutdown();
-ImGui_ImplWin32_Shutdown();
-ImGui::DestroyContext();
-```
-
-Please read 'PROGRAMMER GUIDE' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
-Please read the comments and instruction at the top of each file.
-Please read FAQ at https://www.dearimgui.com/faq
+Additional resources:
+- Read FAQ at https://www.dearimgui.com/faq
+- Read 'PROGRAMMER GUIDE' section in imgui.cpp.
+- Read the comments and instruction at the top of each file.
 
 If you are using any of the backends provided here, you can add the backends/imgui_impl_xxxx(.cpp,.h)
 files to your project and use as-in. Each imgui_impl_xxxx.cpp file comes with its own individual
@@ -104,8 +71,8 @@ OSX + OpenGL2 example. <BR>
 (NB: imgui_impl_osx.mm is currently not as feature complete as other platforms backends.
  You may prefer to use the GLFW Or SDL backends, which will also support Windows and Linux.)
 
-[example_emscripten_wgpu/](https://github.com/ocornut/imgui/blob/master/examples/example_emscripten_wgpu/) <BR>
-Emcripten + GLFW + WebGPU example. <BR>
+[example_glfw_wgpu/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_wgpu/) <BR>
+GLFW + WebGPU example. Supports Emscripten (web) or Dawn (desktop) <BR>
 = main.cpp + imgui_impl_glfw.cpp + imgui_impl_wgpu.cpp
 Note that the 'example_glfw_opengl3' and 'example_sdl2_opengl3' examples also supports Emscripten!
 
@@ -126,7 +93,7 @@ state, and might confuse your GPU driver. One star, not recommended.
 GLFW (Win32, Mac, Linux) + OpenGL3+/ES2/ES3 example (modern, programmable pipeline). <BR>
 = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl3.cpp <BR>
 This uses more modern GL calls and custom shaders.<BR>
-This support building with Emscripten and targetting WebGL.<BR>
+This support building with Emscripten and targeting WebGL.<BR>
 Prefer using that if you are using modern GL or WebGL in your application.
 
 [example_glfw_vulkan/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_vulkan/) <BR>
@@ -168,7 +135,7 @@ state, and might confuse your GPU driver. One star, not recommended.
 SDL2 (Win32, Mac, Linux, etc.) + OpenGL3+/ES2/ES3 example. <BR>
 = main.cpp + imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp <BR>
 This uses more modern GL calls and custom shaders. <BR>
-This support building with Emscripten and targetting WebGL.<BR>
+This support building with Emscripten and targeting WebGL.<BR>
 Prefer using that if you are using modern GL or WebGL in your application.
 
 [example_sdl2_sdlrenderer2/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_sdlrenderer2/) <BR>

external/imgui/imgui/docs/FAQ.md

@@ -23,7 +23,7 @@ or view this file with any Markdown viewer.
 | [I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around...](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-clipping-or-disappearing-when-i-move-windows-around) |
 | [I integrated Dear ImGui in my engine and some elements are displaying outside their expected windows boundaries...](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-displaying-outside-their-expected-windows-boundaries) |
 | **Q&A: Usage** |
-| **[About the ID Stack system..<br>Why is my widget not reacting when I click on it?<br>How can I have widgets with an empty label?<br>How can I have multiple widgets with the same label?<br>How can I have multiple windows with the same label?](#q-about-the-id-stack-system)** |
+| **[About the ID Stack system..<br>Why is my widget not reacting when I click on it?<br>Why is the wrong widget reacting when I click on one?<br>How can I have widgets with an empty label?<br>How can I have multiple widgets with the same label?<br>How can I have multiple windows with the same label?](#q-about-the-id-stack-system)** |
 | [How can I display an image? What is ImTextureID, how does it work?](#q-how-can-i-display-an-image-what-is-imtextureid-how-does-it-work)|
 | [How can I use maths operators with ImVec2?](#q-how-can-i-use-maths-operators-with-imvec2) |
 | [How can I use my own maths types instead of ImVec2/ImVec4?](#q-how-can-i-use-my-own-maths-types-instead-of-imvec2imvec4) |
@@ -77,9 +77,9 @@ or view this file with any Markdown viewer.
 ### Q: Which version should I get?
 I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
 
-You may use the [docking](https://github.com/ocornut/imgui/tree/docking) branch which includes:
-- [Docking features](https://github.com/ocornut/imgui/issues/2109)
-- [Multi-viewport features](https://github.com/ocornut/imgui/issues/1542)
+You may use the ['docking'](https://github.com/ocornut/imgui/tree/docking) branch which includes:
+- [Docking features](https://github.com/ocornut/imgui/wiki/Docking)
+- [Multi-viewport features](https://github.com/ocornut/imgui/wiki/Multi-Viewports)
 
 Many projects are using this branch and it is kept in sync with master regularly.
 
@@ -199,10 +199,43 @@ ctx->RSSetScissorRects(1, &r);
 
 ### Q: About the ID Stack system...
 ### Q: Why is my widget not reacting when I click on it?
+### Q: Why is the wrong widget reacting when I click on one?
 ### Q: How can I have widgets with an empty label?
 ### Q: How can I have multiple widgets with the same label?
 ### Q: How can I have multiple windows with the same label?
 
+**USING THE SAME LABEL+ID IS THE MOST COMMON USER MISTAKE!**
+<br>**USING AN EMPTY LABEL IS THE SAME AS USING THE SAME LABEL AS YOUR PARENT WIDGET!**
+<table>
+<tr>
+<td><img src="https://github.com/user-attachments/assets/776a8315-1164-4178-9a8c-df52e0ff28aa"></td>
+<td>
+<pre lang="cpp">
+ImGui::Begin("Incorrect!");
+ImGui::DragFloat2("My value", &objects[0]->pos.x);
+ImGui::DragFloat2("My value", &objects[1]->pos.x);
+ImGui::DragFloat2("My value", &objects[2]->pos.x);
+ImGui::End();
+&nbsp;
+ImGui::Begin("Correct!");
+ImGui::DragFloat2("My value", &objects[0]->pos.x);
+ImGui::DragFloat2("My value##2", &objects[1]->pos.x);
+ImGui::DragFloat2("My value##3", &objects[2]->pos.x);
+ImGui::End();
+&nbsp;
+ImGui::Begin("Also Correct!");
+for (int n = 0; n < 3; n++)
+{
+    ImGui::PushID(n);
+    ImGui::DragFloat2("My value", &objects[n]->pos.x);
+    ImGui::PopID();
+}
+ImGui::End();
+</pre>
+</td>
+</tr>    
+</table>
+
 A primer on labels and the ID Stack...
 
 Dear ImGui internally needs to uniquely identify UI elements.
@@ -607,7 +640,7 @@ The applications in examples/ are doing that.
 Windows: you can use the WM_CHAR or WM_UNICHAR or WM_IME_CHAR message (depending if your app is built using Unicode or MultiByte mode).
 You may also use `MultiByteToWideChar()` or `ToUnicode()` to retrieve Unicode codepoints from MultiByte characters or keyboard state.
 Windows: if your language is relying on an Input Method Editor (IME), you can write your HWND to ImGui::GetMainViewport()->PlatformHandleRaw
-for the default implementation of io.SetPlatformImeDataFn() to set your Microsoft IME position correctly.
+for the default implementation of GetPlatformIO().Platform_SetImeDataFn() to set your Microsoft IME position correctly.
 
 ##### [Return to Index](#index)
 
@@ -621,8 +654,8 @@ You may take a look at:
 
 - [Quotes](https://github.com/ocornut/imgui/wiki/Quotes)
 - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui)
-- [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors)
-- [Gallery](https://github.com/ocornut/imgui/issues/6897)
+- [Funding & Sponsors](https://github.com/ocornut/imgui/wiki/Funding)
+- [Gallery](https://github.com/ocornut/imgui/issues?q=label%3Agallery)
 
 ##### [Return to Index](#index)
 
@@ -664,11 +697,11 @@ There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/ci
 # Q&A: Community
 
 ### Q: How can I help?
-- Businesses: please reach out to `omar AT dearimgui.com` if you work in a place using Dear ImGui! We can discuss ways for your company to fund development via invoiced technical support, maintenance, or sponsoring contacts. This is among the most useful thing you can do for Dear ImGui. With increased funding, we can hire more people to work on this project.
+- Businesses: please reach out to `omar AT dearimgui.com` if you work in a place using Dear ImGui! We can discuss ways for your company to fund development via invoiced technical support, maintenance, or sponsoring contacts. This is among the most useful thing you can do for Dear ImGui. With increased funding, we can hire more people to work on this project. Please see [Funding](https://github.com/ocornut/imgui/wiki/Funding) page.
 - Individuals: you can support continued maintenance and development via PayPal donations. See [README](https://github.com/ocornut/imgui/blob/master/docs/README.md).
 - If you are experienced with Dear ImGui and C++, look at [GitHub Issues](https://github.com/ocornut/imgui/issues), [GitHub Discussions](https://github.com/ocornut/imgui/discussions), the [Wiki](https://github.com/ocornut/imgui/wiki), read [docs/TODO.txt](https://github.com/ocornut/imgui/blob/master/docs/TODO.txt), and see how you want to help and can help!
 - Disclose your usage of Dear ImGui via a dev blog post, a tweet, a screenshot, a mention somewhere, etc.
-You may post screenshots or links in the [gallery threads](https://github.com/ocornut/imgui/issues/6897). Visuals are ideal as they inspire other programmers. Disclosing your use of Dear ImGui helps the library grow credibility, and helps other teams and programmers with taking decisions.
+You may post screenshots or links in the [gallery threads](https://github.com/ocornut/imgui/issues?q=label%3Agallery). Visuals are ideal as they inspire other programmers. Disclosing your use of Dear ImGui helps the library grow credibility, and helps other teams and programmers with taking decisions.
 - If you have issues or if you need to hack into the library, even if you don't expect any support it is useful that you share your issues or sometimes incomplete PR.
 
 ##### [Return to Index](#index)

external/imgui/imgui/docs/FONTS.md

@@ -50,16 +50,20 @@ All loaded fonts glyphs are rendered into a single texture atlas ahead of time.
 
 ### (4) Font atlas texture fails to upload to GPU.
 
-This is often of byproduct of point 3. If you have large number of glyphs or multiple fonts, the texture may become too big for your graphics API. **The typical result of failing to upload a texture is if every glyph or everything appears as empty black or white rectangle.** Mind the fact that some graphics drivers have texture size limitation. If you are building a PC application, mind the fact that your users may use hardware with lower limitations than yours.
+This is often of byproduct of point 3. If you have large number of glyphs or multiple fonts, the texture may become too big for your graphics API. **The typical result of failing to upload a texture is if every glyph or everything appears as empty white rectangles.** Mind the fact that some graphics drivers have texture size limitation. If you are building a PC application, mind the fact that your users may use hardware with lower limitations than yours.
+
+![empty squares](https://github.com/user-attachments/assets/68b50fb5-8b9d-4c38-baec-6ac384f06d26)
 
 Some solutions:
-- You may reduce oversampling, e.g. `font_config.OversampleH = 1`, this will half your texture size for a quality looss.
+- You may reduce oversampling, e.g. `font_config.OversampleH = 1`, this will half your texture size for a quality loss.
   Note that while OversampleH = 2 looks visibly very close to 3 in most situations, with OversampleH = 1 the quality drop will be noticeable. Read about oversampling [here](https://github.com/nothings/stb/blob/master/tests/oversample).
 - Reduce glyphs ranges by calculating them from source localization data.
   You can use the `ImFontGlyphRangesBuilder` for this purpose and rebuilding your atlas between frames when new characters are needed. This will be the biggest win!
 - Set `io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight;` to disable rounding the texture height to the next power of two.
 - Set `io.Fonts.TexDesiredWidth` to specify a texture width to reduce maximum texture height (see comment in `ImFontAtlas::Build()` function).
 
+Future versions of Dear ImGui should solve this problem.
+
 ##### [Return to Index](#index)
 
 ---------------------------------------

external/imgui/imgui/docs/README.md

@@ -11,18 +11,18 @@ Dear ImGui
 
 Businesses: support continued development and maintenance via invoiced sponsoring/support contracts:
 <br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot com_
-<br>Individuals: support continued development and maintenance [here](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S). Also see [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors) page.
+<br>Individuals: support continued development and maintenance [here](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S). Also see [Funding](https://github.com/ocornut/imgui/wiki/Funding) page.
 
-| [The Pitch](#the-pitch) - [Usage](#usage) - [How it works](#how-it-works) - [Releases & Changelogs](#releases--changelogs) - [Demo](#demo) - [Integration](#integration) |
+| [The Pitch](#the-pitch) - [Usage](#usage) - [How it works](#how-it-works) - [Releases & Changelogs](#releases--changelogs) - [Demo](#demo) - [Getting Started & Integration](#getting-started--integration) |
 :----------------------------------------------------------: |
-| [Gallery](#gallery) - [Support, FAQ](#support-frequently-asked-questions-faq) -  [How to help](#how-to-help) - [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors) - [Credits](#credits) - [License](#license) |
-| [Wiki](https://github.com/ocornut/imgui/wiki) - [Languages & frameworks backends/bindings](https://github.com/ocornut/imgui/wiki/Bindings) - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) - [User quotes](https://github.com/ocornut/imgui/wiki/Quotes) |
+| [Gallery](#gallery) - [Support, FAQ](#support-frequently-asked-questions-faq) -  [How to help](#how-to-help) - **[Funding & Sponsors](https://github.com/ocornut/imgui/wiki/Funding)** - [Credits](#credits) - [License](#license) |
+| [Wiki](https://github.com/ocornut/imgui/wiki) - [Extensions](https://github.com/ocornut/imgui/wiki/Useful-Extensions) - [Languages bindings & frameworks backends](https://github.com/ocornut/imgui/wiki/Bindings) - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) - [User quotes](https://github.com/ocornut/imgui/wiki/Quotes) |
 
 ### The Pitch
 
 Dear ImGui is a **bloat-free graphical user interface library for C++**. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline-enabled application. It is fast, portable, renderer agnostic, and self-contained (no external dependencies).
 
-Dear ImGui is designed to **enable fast iterations** and to **empower programmers** to create **content creation tools and visualization / debug tools** (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal and lacks certain features commonly found in more high-level libraries.
+Dear ImGui is designed to **enable fast iterations** and to **empower programmers** to create **content creation tools and visualization / debug tools** (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal and lacks certain features commonly found in more high-level libraries. Among other things, full internationalization (right-to-left text, bidirectional text, text shaping etc.) and accessibility features are not supported.
 
 Dear ImGui is particularly suited to integration in game engines (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on console platforms where operating system features are non-standard.
 
@@ -39,11 +39,11 @@ Dear ImGui is particularly suited to integration in game engines (for tooling),
 
 ### Usage
 
-**The core of Dear ImGui is self-contained within a few platform-agnostic files** which you can easily compile in your application/engine. They are all the files in the root folder of the repository (imgui*.cpp, imgui*.h). **No specific build process is required**. You can add the .cpp files into your existing project. 
+**The core of Dear ImGui is self-contained within a few platform-agnostic files** which you can easily compile in your application/engine. They are all the files in the root folder of the repository (imgui*.cpp, imgui*.h). **No specific build process is required**. You can add the .cpp files into your existing project.
 
 **Backends for a variety of graphics API and rendering platforms** are provided in the [backends/](https://github.com/ocornut/imgui/tree/master/backends) folder, along with example applications in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder. You may also create your own backend. Anywhere where you can render textured triangles, you can render Dear ImGui.
 
-See the [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) guide and [Integration](#integration) section of this document for more details.
+See the [Getting Started & Integration](#getting-started--integration) section of this document for more details.
 
 After Dear ImGui is set up in your application, you can use it from \_anywhere\_ in your program loop:
 ```cpp
@@ -114,7 +114,7 @@ You should be able to build the examples from sources. If you don't, let us know
 
 The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at a different scale and scale your style with `style.ScaleAllSizes()` (see [FAQ](https://www.dearimgui.com/faq)).
 
-### Integration
+### Getting Started & Integration
 
 See the [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) guide for details.
 
@@ -139,7 +139,9 @@ Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
 
 ### Gallery
 
-For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues/6897)!
+Examples projects using Dear ImGui: [Tracy](https://github.com/wolfpld/tracy) (profiler), [ImHex](https://github.com/WerWolv/ImHex) (hex editor/data analysis), [RemedyBG](https://remedybg.itch.io/remedybg) (debugger) and [hundreds of others](https://github.com/ocornut/imgui/wiki/Software-using-Dear-ImGui).
+
+For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues?q=label%3Agallery)!
 
 For a list of third-party widgets and extensions, check out the [Useful Extensions/Widgets](https://github.com/ocornut/imgui/wiki/Useful-Extensions) wiki page.
 
@@ -160,17 +162,19 @@ See: [Upcoming Changes](https://github.com/ocornut/imgui/wiki/Upcoming-Changes).
 
 See: [Dear ImGui Test Engine + Test Suite](https://github.com/ocornut/imgui_test_engine) for Automation & Testing.
 
+For the purposes of getting search engines to crawl the wiki, here's a link to the [Crawlable Wiki](https://github-wiki-see.page/m/ocornut/imgui/wiki) (not for humans, [here's why](https://github-wiki-see.page/)).
+
 Getting started? For first-time users having issues compiling/linking/running or issues loading fonts, please use [GitHub Discussions](https://github.com/ocornut/imgui/discussions). For ANY other questions, bug reports, requests, feedback, please post on [GitHub Issues](https://github.com/ocornut/imgui/issues). Please read and fill the New Issue template carefully.
 
 Private support is available for paying business customers (E-mail: _contact @ dearimgui dot com_).
 
 **Which version should I get?**
 
-We occasionally tag [Releases](https://github.com/ocornut/imgui/releases) (with nice releases notes) but it is generally safe and recommended to sync to latest `master` or `docking` branch. The library is fairly stable and regressions tend to be fixed fast when reported. Advanced users may want to use the `docking` branch with [Multi-Viewport](https://github.com/ocornut/imgui/issues/1542) and [Docking](https://github.com/ocornut/imgui/issues/2109) features. This branch is kept in sync with master regularly.
+We occasionally tag [Releases](https://github.com/ocornut/imgui/releases) (with nice releases notes) but it is generally safe and recommended to sync to latest `master` or `docking` branch. The library is fairly stable and regressions tend to be fixed fast when reported. Advanced users may want to use the `docking` branch with [Multi-Viewport](https://github.com/ocornut/imgui/wiki/Multi-Viewports) and [Docking](https://github.com/ocornut/imgui/wiki/Docking) features. This branch is kept in sync with master regularly.
 
 **Who uses Dear ImGui?**
 
-See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes), [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors), and [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for an idea of who is using Dear ImGui. Please add your game/software if you can! Also, see the [Gallery Threads](https://github.com/ocornut/imgui/issues/6897)!
+See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes), [Funding & Sponsors](https://github.com/ocornut/imgui/wiki/Funding), and [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for an idea of who is using Dear ImGui. Please add your game/software if you can! Also, see the [Gallery Threads](https://github.com/ocornut/imgui/issues?q=label%3Agallery)!
 
 How to help
 -----------
@@ -180,13 +184,13 @@ How to help
 - See [GitHub Forum/Issues](https://github.com/ocornut/imgui/issues).
 - You may help with development and submit pull requests! Please understand that by submitting a PR you are also submitting a request for the maintainer to review your code and then take over its maintenance forever. PR should be crafted both in the interest of the end-users and also to ease the maintainer into understanding and accepting it.
 - See [Help wanted](https://github.com/ocornut/imgui/wiki/Help-Wanted) on the [Wiki](https://github.com/ocornut/imgui/wiki/) for some more ideas.
-- Be a [sponsor](https://github.com/ocornut/imgui/wiki/Sponsors)! Have your company financially support this project via invoiced sponsors/maintenance or by buying a license for [Dear ImGui Test Engine](https://github.com/ocornut/imgui_test_engine) (please reach out: omar AT dearimgui DOT com).
+- Be a [Funding Supporter](https://github.com/ocornut/imgui/wiki/Funding)! Have your company financially support this project via invoiced sponsors/maintenance or by buying a license for [Dear ImGui Test Engine](https://github.com/ocornut/imgui_test_engine) (please reach out: omar AT dearimgui DOT com).
 
 Sponsors
 --------
 
 Ongoing Dear ImGui development is and has been financially supported by users and private sponsors.
-<BR>Please see the **[detailed list of current and past Dear ImGui supporters](https://github.com/ocornut/imgui/wiki/Sponsors)** for details.
+<BR>Please see the **[detailed list of current and past Dear ImGui funding supporters and sponsors](https://github.com/ocornut/imgui/wiki/Funding)** for details.
 <BR>From November 2014 to December 2019, ongoing development has also been financially supported by its users on Patreon and through individual donations.
 
 **THANK YOU to all past and present supporters for helping to keep this project alive and thriving!**
@@ -203,7 +207,7 @@ Developed by [Omar Cornut](https://www.miracleworld.net) and every direct or ind
 
 Recurring contributors include Rokas Kupstys [@rokups](https://github.com/rokups) (2020-2022): a good portion of work on automation system and regression tests now available in [Dear ImGui Test Engine](https://github.com/ocornut/imgui_test_engine).
 
-Sponsoring, maintenance/support contracts and other B2B transactions are hosted and handled by [Disco Hello](https://www.discohello.com).
+Maintenance/support contracts, sponsoring invoices and other B2B transactions are hosted and handled by [Disco Hello](https://www.discohello.com).
 
 Omar: "I first discovered the IMGUI paradigm at [Q-Games](https://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it."
 

external/imgui/imgui/docs/TODO.txt

@@ -39,7 +39,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - scrolling: forward mouse wheel scrolling to parent window when at the edge of scrolling limits? (useful for listbox,tables?)
  - scrolling/style: shadows on scrollable areas to denote that there is more contents (see e.g. DaVinci Resolve ui)
 
- - drawdata: make it easy to deep-copy (or swap?) a full ImDrawData so user can easily save that data if they use threaded rendering. (e.g. #2646)
+ - drawdata: make it easy to deep-copy (or swap?) a full ImDrawData so user can easily save that data if they use threaded rendering. (#1860 see ImDrawDataSnapshot)
  ! drawlist: add CalcTextSize() func to facilitate consistent code from user pov (currently need to use ImGui or ImFont alternatives!)
  - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command). (WIP branch)
  - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
@@ -65,7 +65,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - selectable: generic BeginSelectable()/EndSelectable() mechanism. (work out alongside range-select branch)
  - selectable: a way to visualize partial/mixed selection (e.g. parent tree node has children with mixed selection)
 
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. (WIP branch)
  - input text: preserve scrolling when unfocused?
  - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
  - input text: expose CursorPos in char filter event (#816)
@@ -117,7 +116,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 !- color: the color conversion helpers/types are a mess and needs sorting out.
  - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
 
- - plot: full featured plot/graph api w/ scrolling, zooming etc. --> ImPlot
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. --> promote using ImPlot
  - (plot: deleted all other todo lines on 2023-06-28)
 
  - clipper: ability to disable the clipping through a simple flag/bool.
@@ -150,7 +149,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - drag float: power != 0.0f with current value being outside the range keeps the value stuck.
  - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
 
- - combo: use clipper.
  - combo: a way/helper to customize the combo preview (#1658) -> experimental BeginComboPreview()
  - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
  - listbox: multiple selection (WIP range-select branch)
@@ -173,13 +171,14 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
  - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
  - tooltip: drag tooltip hovering over source widget with IsItemHovered/SetTooltip flickers (WIP branch)
+ - tooltip: tooltip priorities to override a stock tooltip (e.g. shortcut tooltip)
 
  - status-bar: add a per-window status bar helper similar to what menu-bar does. generalize concept of layer0 rect in window (can make _MenuBar window flag obsolete too).
+ - shortcuts: store multiple keychords in ImGuiKeyChord
+ - shortcuts: Hovered route (lower than Focused, higher than Global)
  - shortcuts: local-style shortcut api, e.g. parse "&Save"
  - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer.
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally zero.
  - menus: would be nice if the Selectable() supported horizontal alignment (must be given the equivalent of WorkRect.Max.x matching the position of the shortcut column)
 
  - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
@@ -190,11 +189,11 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - tree node/opt: could avoid formatting when clipped (flag assuming we don't care about width/height, assume single line height? format only %s/%c to be able to count height?)
 
  - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: facilitate extension lazily calling AddSettingsHandler() while running and still getting their data call the ReadXXX handlers immediately.
  - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
  - settings/persistence: helpers to make TreeNodeBehavior persist (even during dev!) - may need to store some semantic and/or data type in ImGuiStoragePair
 
  - style: better default styles. (#707)
- - style: PushStyleVar: allow direct access to individual float X/Y elements.
  - style: add a highlighted text color (for headers, etc.)
  - style: border types: out-screen, in-screen, etc. (#447)
  - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
@@ -275,7 +274,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - font/opt: Considering storing standalone AdvanceX table as 16-bit fixed point integer?
  - font/opt: Glyph currently 40 bytes (2+9*4). Consider storing UV as 16-bits integer? (->32 bytes). X0/Y0/X1/Y1 as 16 fixed-point integers? Or X0/Y0 as float and X1/Y1 as fixed8_8?
 
- - nav: visual feedback on button press.
  - nav: some features such as PageUp/Down/Home/End should probably work without ImGuiConfigFlags_NavEnableKeyboard? (where do we draw the line? how about CTRL+Tab)
  ! nav: never clear NavId on some setup (e.g. gamepad centric)
  - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
@@ -315,8 +313,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
  - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
  - misc: use more size_t in public api?
- - misc: possible compile-time support for string view/range instead of char* would e.g. facilitate usage with Rust (#683, #3038, WIP string_view branch)
- - misc: possible compile-time support for wchar_t instead of char*?
+ - misc: support for string view/range instead of char* would e.g. facilitate usage with Rust (#683, #3038, WIP string_view branch)
 
  - demo: demonstrate using PushStyleVar() in more details.
  - demo: add vertical separator demo
@@ -336,7 +333,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - backends: bgfx: https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
  - backends: emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
 
- - bindings: ways to use clang ast dump to generate bindings or helpers for bindings? (e.g. clang++ -Xclang -ast-dump=json imgui.h) (WIP project "dear-bindings" still private)
+ - bindings: ways to use clang ast dump to generate bindings or helpers for bindings? (e.g. clang++ -Xclang -ast-dump=json imgui.h) (--> use https://github.com/dearimgui/dear_bindings)
 
  - optimization: replace vsnprintf with stb_printf? using IMGUI_USE_STB_SPRINTF. (#1038 + needed for string_view)
  - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.

external/imgui/imgui/examples/example_android_opengl3/android/app/src/main/AndroidManifest.xml

@@ -11,7 +11,7 @@
             android:name="imgui.example.android.MainActivity"
             android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
             android:configChanges="orientation|keyboardHidden|screenSize"
-            android:exported="false">
+            android:exported="true">
             <meta-data android:name="android.app.lib_name"
                 android:value="ImGuiExample" />
 

external/imgui/imgui/examples/example_android_opengl3/main.cpp

@@ -161,7 +161,7 @@ void Init(struct android_app* app)
 
     // We load the default font with increased size to improve readability on many devices with "high" DPI.
     // FIXME: Put some effort into DPI awareness.
-    // Important: when calling AddFontFromMemoryTTF(), ownership of font_data is transfered by Dear ImGui by default (deleted is handled by Dear ImGui), unless we set FontDataOwnedByAtlas=false in ImFontConfig
+    // Important: when calling AddFontFromMemoryTTF(), ownership of font_data is transferred by Dear ImGui by default (deleted is handled by Dear ImGui), unless we set FontDataOwnedByAtlas=false in ImFontConfig
     ImFontConfig font_cfg;
     font_cfg.SizePixels = 22.0f;
     io.Fonts->AddFontDefault(&font_cfg);

external/imgui/imgui/examples/example_emscripten_wgpu/main.cpp

@@ -1,254 +0,0 @@
-// Dear ImGui: standalone example application for Emscripten, using GLFW + WebGPU
-// (Emscripten is a C++-to-javascript compiler, used to publish executables for the web. See https://emscripten.org/)
-
-// Learn about Dear ImGui:
-// - FAQ                  https://dearimgui.com/faq
-// - Getting Started      https://dearimgui.com/getting-started
-// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
-// - Introduction, links and more at the top of imgui.cpp
-
-#include "imgui.h"
-#include "imgui_impl_glfw.h"
-#include "imgui_impl_wgpu.h"
-#include <stdio.h>
-#include <emscripten.h>
-#include <emscripten/html5.h>
-#include <emscripten/html5_webgpu.h>
-#include <GLFW/glfw3.h>
-#include <webgpu/webgpu.h>
-#include <webgpu/webgpu_cpp.h>
-
-// Global WebGPU required states
-static WGPUDevice        wgpu_device = nullptr;
-static WGPUSurface       wgpu_surface = nullptr;
-static WGPUTextureFormat wgpu_preferred_fmt = WGPUTextureFormat_RGBA8Unorm;
-static WGPUSwapChain     wgpu_swap_chain = nullptr;
-static int               wgpu_swap_chain_width = 0;
-static int               wgpu_swap_chain_height = 0;
-
-// Forward declarations
-static void MainLoopStep(void* window);
-static bool InitWGPU();
-static void print_glfw_error(int error, const char* description);
-static void print_wgpu_error(WGPUErrorType error_type, const char* message, void*);
-
-// Main code
-int main(int, char**)
-{
-    glfwSetErrorCallback(print_glfw_error);
-    if (!glfwInit())
-        return 1;
-
-    // Make sure GLFW does not initialize any graphics context.
-    // This needs to be done explicitly later.
-    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
-    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+WebGPU example", nullptr, nullptr);
-    if (!window)
-    {
-        glfwTerminate();
-        return 1;
-    }
-
-    // Initialize the WebGPU environment
-    if (!InitWGPU())
-    {
-        if (window)
-            glfwDestroyWindow(window);
-        glfwTerminate();
-        return 1;
-    }
-    glfwShowWindow(window);
-
-    // Setup Dear ImGui context
-    IMGUI_CHECKVERSION();
-    ImGui::CreateContext();
-    ImGuiIO& io = ImGui::GetIO(); (void)io;
-    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
-    io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
-
-    // For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
-    // You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
-    io.IniFilename = nullptr;
-
-    // Setup Dear ImGui style
-    ImGui::StyleColorsDark();
-    //ImGui::StyleColorsLight();
-
-    // Setup Platform/Renderer backends
-    ImGui_ImplGlfw_InitForOther(window, true);
-    ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback("#canvas");
-    ImGui_ImplWGPU_Init(wgpu_device, 3, wgpu_preferred_fmt, WGPUTextureFormat_Undefined);
-
-    // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
-    // - If the file cannot be loaded, the function will return a nullptr. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
-    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
-    // - Read 'docs/FONTS.md' for more instructions and details.
-    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
-    // - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
-    //io.Fonts->AddFontDefault();
-#ifndef IMGUI_DISABLE_FILE_FUNCTIONS
-    //io.Fonts->AddFontFromFileTTF("fonts/segoeui.ttf", 18.0f);
-    io.Fonts->AddFontFromFileTTF("fonts/DroidSans.ttf", 16.0f);
-    //io.Fonts->AddFontFromFileTTF("fonts/Roboto-Medium.ttf", 16.0f);
-    //io.Fonts->AddFontFromFileTTF("fonts/Cousine-Regular.ttf", 15.0f);
-    //io.Fonts->AddFontFromFileTTF("fonts/ProggyTiny.ttf", 10.0f);
-    //ImFont* font = io.Fonts->AddFontFromFileTTF("fonts/ArialUni.ttf", 18.0f, nullptr, io.Fonts->GetGlyphRangesJapanese());
-    //IM_ASSERT(font != nullptr);
-#endif
-
-    // This function will directly return and exit the main function.
-    // Make sure that no required objects get cleaned up.
-    // This way we can use the browsers 'requestAnimationFrame' to control the rendering.
-    emscripten_set_main_loop_arg(MainLoopStep, window, 0, false);
-
-    return 0;
-}
-
-static bool InitWGPU()
-{
-    wgpu_device = emscripten_webgpu_get_device();
-    if (!wgpu_device)
-        return false;
-
-    wgpuDeviceSetUncapturedErrorCallback(wgpu_device, print_wgpu_error, nullptr);
-
-    // Use C++ wrapper due to misbehavior in Emscripten.
-    // Some offset computation for wgpuInstanceCreateSurface in JavaScript
-    // seem to be inline with struct alignments in the C++ structure
-    wgpu::SurfaceDescriptorFromCanvasHTMLSelector html_surface_desc = {};
-    html_surface_desc.selector = "#canvas";
-
-    wgpu::SurfaceDescriptor surface_desc = {};
-    surface_desc.nextInChain = &html_surface_desc;
-
-    wgpu::Instance instance = wgpuCreateInstance(nullptr);
-    wgpu::Surface surface = instance.CreateSurface(&surface_desc);
-    wgpu::Adapter adapter = {};
-    wgpu_preferred_fmt = (WGPUTextureFormat)surface.GetPreferredFormat(adapter);
-    wgpu_surface = surface.Release();
-
-    return true;
-}
-
-static void MainLoopStep(void* window)
-{
-    ImGuiIO& io = ImGui::GetIO();
-
-    glfwPollEvents();
-
-    int width, height;
-    glfwGetFramebufferSize((GLFWwindow*)window, &width, &height);
-
-    // React to changes in screen size
-    if (width != wgpu_swap_chain_width && height != wgpu_swap_chain_height)
-    {
-        ImGui_ImplWGPU_InvalidateDeviceObjects();
-        if (wgpu_swap_chain)
-            wgpuSwapChainRelease(wgpu_swap_chain);
-        wgpu_swap_chain_width = width;
-        wgpu_swap_chain_height = height;
-        WGPUSwapChainDescriptor swap_chain_desc = {};
-        swap_chain_desc.usage = WGPUTextureUsage_RenderAttachment;
-        swap_chain_desc.format = wgpu_preferred_fmt;
-        swap_chain_desc.width = width;
-        swap_chain_desc.height = height;
-        swap_chain_desc.presentMode = WGPUPresentMode_Fifo;
-        wgpu_swap_chain = wgpuDeviceCreateSwapChain(wgpu_device, wgpu_surface, &swap_chain_desc);
-        ImGui_ImplWGPU_CreateDeviceObjects();
-    }
-
-    // Start the Dear ImGui frame
-    ImGui_ImplWGPU_NewFrame();
-    ImGui_ImplGlfw_NewFrame();
-    ImGui::NewFrame();
-
-    // Our state
-    // (we use static, which essentially makes the variable globals, as a convenience to keep the example code easy to follow)
-    static bool show_demo_window = true;
-    static bool show_another_window = false;
-    static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
-    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-    if (show_demo_window)
-        ImGui::ShowDemoWindow(&show_demo_window);
-
-    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
-    {
-        static float f = 0.0f;
-        static int counter = 0;
-
-        ImGui::Begin("Hello, world!");                                // Create a window called "Hello, world!" and append into it.
-
-        ImGui::Text("This is some useful text.");                     // Display some text (you can use a format strings too)
-        ImGui::Checkbox("Demo Window", &show_demo_window);            // Edit bools storing our window open/close state
-        ImGui::Checkbox("Another Window", &show_another_window);
-
-        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);                  // Edit 1 float using a slider from 0.0f to 1.0f
-        ImGui::ColorEdit3("clear color", (float*)&clear_color);       // Edit 3 floats representing a color
-
-        if (ImGui::Button("Button"))                                  // Buttons return true when clicked (most widgets return true when edited/activated)
-            counter++;
-        ImGui::SameLine();
-        ImGui::Text("counter = %d", counter);
-
-        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
-        ImGui::End();
-    }
-
-    // 3. Show another simple window.
-    if (show_another_window)
-    {
-        ImGui::Begin("Another Window", &show_another_window);         // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
-        ImGui::Text("Hello from another window!");
-        if (ImGui::Button("Close Me"))
-            show_another_window = false;
-        ImGui::End();
-    }
-
-    // Rendering
-    ImGui::Render();
-
-    WGPURenderPassColorAttachment color_attachments = {};
-    color_attachments.loadOp = WGPULoadOp_Clear;
-    color_attachments.storeOp = WGPUStoreOp_Store;
-    color_attachments.clearValue = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
-    color_attachments.view = wgpuSwapChainGetCurrentTextureView(wgpu_swap_chain);
-    WGPURenderPassDescriptor render_pass_desc = {};
-    render_pass_desc.colorAttachmentCount = 1;
-    render_pass_desc.colorAttachments = &color_attachments;
-    render_pass_desc.depthStencilAttachment = nullptr;
-
-    WGPUCommandEncoderDescriptor enc_desc = {};
-    WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(wgpu_device, &enc_desc);
-
-    WGPURenderPassEncoder pass = wgpuCommandEncoderBeginRenderPass(encoder, &render_pass_desc);
-    ImGui_ImplWGPU_RenderDrawData(ImGui::GetDrawData(), pass);
-    wgpuRenderPassEncoderEnd(pass);
-
-    WGPUCommandBufferDescriptor cmd_buffer_desc = {};
-    WGPUCommandBuffer cmd_buffer = wgpuCommandEncoderFinish(encoder, &cmd_buffer_desc);
-    WGPUQueue queue = wgpuDeviceGetQueue(wgpu_device);
-    wgpuQueueSubmit(queue, 1, &cmd_buffer);
-}
-
-static void print_glfw_error(int error, const char* description)
-{
-    printf("GLFW Error %d: %s\n", error, description);
-}
-
-static void print_wgpu_error(WGPUErrorType error_type, const char* message, void*)
-{
-    const char* error_type_lbl = "";
-    switch (error_type)
-    {
-    case WGPUErrorType_Validation:  error_type_lbl = "Validation"; break;
-    case WGPUErrorType_OutOfMemory: error_type_lbl = "Out of memory"; break;
-    case WGPUErrorType_Unknown:     error_type_lbl = "Unknown"; break;
-    case WGPUErrorType_DeviceLost:  error_type_lbl = "Device lost"; break;
-    default:                        error_type_lbl = "Unknown";
-    }
-    printf("%s error: %s\n", error_type_lbl, message);
-}

external/imgui/imgui/examples/example_glfw_metal/Makefile

@@ -14,10 +14,10 @@ SOURCES += $(IMGUI_DIR)/backends/imgui_impl_glfw.cpp $(IMGUI_DIR)/backends/imgui
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 LIBS = -framework Metal -framework MetalKit -framework Cocoa -framework IOKit -framework CoreVideo -framework QuartzCore
-LIBS += -L/usr/local/lib -L/opt/homebrew/lib
+LIBS += -L/usr/local/lib -L/opt/homebrew/lib -L/opt/local/lib
 LIBS += -lglfw
 
-CXXFLAGS = -std=c++11 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends -I/usr/local/include -I/opt/homebrew/include
+CXXFLAGS = -std=c++11 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends -I/usr/local/include -I/opt/homebrew/include -I/opt/local/include
 CXXFLAGS += -Wall -Wformat
 CFLAGS = $(CXXFLAGS)
 

external/imgui/imgui/examples/example_glfw_opengl2/main.cpp

@@ -91,6 +91,11 @@ int main(int, char**)
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
         glfwPollEvents();
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL2_NewFrame();

external/imgui/imgui/examples/example_glfw_opengl3/main.cpp

@@ -85,7 +85,7 @@ int main(int, char**)
     // Setup Platform/Renderer backends
     ImGui_ImplGlfw_InitForOpenGL(window, true);
 #ifdef __EMSCRIPTEN__
-    ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback("#canvas");
+    ImGui_ImplGlfw_InstallEmscriptenCallbacks(window, "#canvas");
 #endif
     ImGui_ImplOpenGL3_Init(glsl_version);
 
@@ -127,6 +127,11 @@ int main(int, char**)
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
         glfwPollEvents();
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL3_NewFrame();

external/imgui/imgui/examples/example_glfw_vulkan/main.cpp

@@ -21,8 +21,12 @@
 #define GLFW_INCLUDE_NONE
 #define GLFW_INCLUDE_VULKAN
 #include <GLFW/glfw3.h>
-#include <vulkan/vulkan.h>
-//#include <vulkan/vulkan_beta.h>
+
+// Volk headers
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+#define VOLK_IMPLEMENTATION
+#include <volk.h>
+#endif
 
 // [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
 // To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
@@ -31,9 +35,9 @@
 #pragma comment(lib, "legacy_stdio_definitions")
 #endif
 
-//#define IMGUI_UNLIMITED_FRAME_RATE
+//#define APP_USE_UNLIMITED_FRAME_RATE
 #ifdef _DEBUG
-#define IMGUI_VULKAN_DEBUG_REPORT
+#define APP_USE_VULKAN_DEBUG_REPORT
 #endif
 
 // Data
@@ -64,14 +68,14 @@ static void check_vk_result(VkResult err)
         abort();
 }
 
-#ifdef IMGUI_VULKAN_DEBUG_REPORT
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
 static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
 {
     (void)flags; (void)object; (void)location; (void)messageCode; (void)pUserData; (void)pLayerPrefix; // Unused arguments
     fprintf(stderr, "[vulkan] Debug report from ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
     return VK_FALSE;
 }
-#endif // IMGUI_VULKAN_DEBUG_REPORT
+#endif // APP_USE_VULKAN_DEBUG_REPORT
 
 static bool IsExtensionAvailable(const ImVector<VkExtensionProperties>& properties, const char* extension)
 {
@@ -113,6 +117,9 @@ static VkPhysicalDevice SetupVulkan_SelectPhysicalDevice()
 static void SetupVulkan(ImVector<const char*> instance_extensions)
 {
     VkResult err;
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+    volkInitialize();
+#endif
 
     // Create Vulkan Instance
     {
@@ -139,7 +146,7 @@ static void SetupVulkan(ImVector<const char*> instance_extensions)
 #endif
 
         // Enabling validation layers
-#ifdef IMGUI_VULKAN_DEBUG_REPORT
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
         const char* layers[] = { "VK_LAYER_KHRONOS_validation" };
         create_info.enabledLayerCount = 1;
         create_info.ppEnabledLayerNames = layers;
@@ -151,17 +158,20 @@ static void SetupVulkan(ImVector<const char*> instance_extensions)
         create_info.ppEnabledExtensionNames = instance_extensions.Data;
         err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
         check_vk_result(err);
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+        volkLoadInstance(g_Instance);
+#endif
 
         // Setup the debug report callback
-#ifdef IMGUI_VULKAN_DEBUG_REPORT
-        auto vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
-        IM_ASSERT(vkCreateDebugReportCallbackEXT != nullptr);
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
+        auto f_vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
+        IM_ASSERT(f_vkCreateDebugReportCallbackEXT != nullptr);
         VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
         debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
         debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
         debug_report_ci.pfnCallback = debug_report;
         debug_report_ci.pUserData = nullptr;
-        err = vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
+        err = f_vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
         check_vk_result(err);
 #endif
     }
@@ -258,7 +268,7 @@ static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface
     wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
 
     // Select Present Mode
-#ifdef IMGUI_UNLIMITED_FRAME_RATE
+#ifdef APP_USE_UNLIMITED_FRAME_RATE
     VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
 #else
     VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
@@ -275,11 +285,11 @@ static void CleanupVulkan()
 {
     vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
 
-#ifdef IMGUI_VULKAN_DEBUG_REPORT
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
     // Remove the debug report callback
-    auto vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
-    vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
-#endif // IMGUI_VULKAN_DEBUG_REPORT
+    auto f_vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
+    f_vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
+#endif // APP_USE_VULKAN_DEBUG_REPORT
 
     vkDestroyDevice(g_Device, g_Allocator);
     vkDestroyInstance(g_Instance, g_Allocator);
@@ -376,7 +386,7 @@ static void FramePresent(ImGui_ImplVulkanH_Window* wd)
         return;
     }
     check_vk_result(err);
-    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
+    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->SemaphoreCount; // Now we can use the next set of semaphores
 }
 
 // Main code
@@ -434,13 +444,14 @@ int main(int, char**)
     init_info.Queue = g_Queue;
     init_info.PipelineCache = g_PipelineCache;
     init_info.DescriptorPool = g_DescriptorPool;
+    init_info.RenderPass = wd->RenderPass;
     init_info.Subpass = 0;
     init_info.MinImageCount = g_MinImageCount;
     init_info.ImageCount = wd->ImageCount;
     init_info.MSAASamples = VK_SAMPLE_COUNT_1_BIT;
     init_info.Allocator = g_Allocator;
     init_info.CheckVkResultFn = check_vk_result;
-    ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
+    ImGui_ImplVulkan_Init(&init_info);
 
     // Load Fonts
     // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
@@ -474,17 +485,19 @@ int main(int, char**)
         glfwPollEvents();
 
         // Resize swap chain?
-        if (g_SwapChainRebuild)
+        int fb_width, fb_height;
+        glfwGetFramebufferSize(window, &fb_width, &fb_height);
+        if (fb_width > 0 && fb_height > 0 && (g_SwapChainRebuild || g_MainWindowData.Width != fb_width || g_MainWindowData.Height != fb_height))
         {
-            int width, height;
-            glfwGetFramebufferSize(window, &width, &height);
-            if (width > 0 && height > 0)
-            {
-                ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
-                ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
-                g_MainWindowData.FrameIndex = 0;
-                g_SwapChainRebuild = false;
-            }
+            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+            ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, fb_width, fb_height, g_MinImageCount);
+            g_MainWindowData.FrameIndex = 0;
+            g_SwapChainRebuild = false;
+        }
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
         }
 
         // Start the Dear ImGui frame

external/imgui/imgui/examples/example_glfw_wgpu/CMakeLists.txt

@@ -0,0 +1,117 @@
+# Building for desktop (WebGPU-native) with Dawn:
+#  1. git clone https://github.com/google/dawn dawn
+#  2. cmake -B build -DIMGUI_DAWN_DIR=dawn
+#  3. cmake --build build
+# The resulting binary will be found at one of the following locations:
+#   * build/Debug/example_glfw_wgpu[.exe]
+#   * build/example_glfw_wgpu[.exe]
+
+# Building for Emscripten:
+#  1. Install Emscripten SDK following the instructions: https://emscripten.org/docs/getting_started/downloads.html
+#  2. Install Ninja build system
+#  3. emcmake cmake -G Ninja -B build
+#  3. cmake --build build
+#  4. emrun build/index.html
+
+cmake_minimum_required(VERSION 3.10.2)
+project(imgui_example_glfw_wgpu C CXX)
+
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
+endif()
+
+set(CMAKE_CXX_STANDARD 17) # Dawn requires C++17
+
+# Dear ImGui
+set(IMGUI_DIR ../../)
+
+# Libraries
+if(EMSCRIPTEN)
+  if(EMSCRIPTEN_VERSION VERSION_GREATER_EQUAL "3.1.57")
+    set(IMGUI_EMSCRIPTEN_GLFW3 "--use-port=contrib.glfw3" CACHE STRING "Choose between --use-port=contrib.glfw3 and -sUSE_GLFW=3 for GLFW implementation (default to --use-port=contrib.glfw3)")
+  else()
+    # cannot use contrib.glfw3 prior to 3.1.57
+    set(IMGUI_EMSCRIPTEN_GLFW3 "-sUSE_GLFW=3" CACHE STRING "Use -sUSE_GLFW=3 for GLFW implementation" FORCE)
+  endif()
+  set(LIBRARIES glfw)
+  add_compile_options(-sDISABLE_EXCEPTION_CATCHING=1 -DIMGUI_DISABLE_FILE_FUNCTIONS=1)
+else()
+  # Dawn wgpu desktop
+  set(DAWN_FETCH_DEPENDENCIES ON)
+  set(IMGUI_DAWN_DIR CACHE PATH "Path to Dawn repository")
+  if (NOT IMGUI_DAWN_DIR)
+    message(FATAL_ERROR "Please specify the Dawn repository by setting IMGUI_DAWN_DIR")
+  endif()
+
+  option(DAWN_FETCH_DEPENDENCIES "Use fetch_dawn_dependencies.py as an alternative to using depot_tools" ON)
+
+  # Dawn builds many things by default - disable things we don't need
+  option(DAWN_BUILD_SAMPLES "Enables building Dawn's samples" OFF)
+  option(TINT_BUILD_CMD_TOOLS "Build the Tint command line tools" OFF)
+  option(TINT_BUILD_DOCS "Build documentation" OFF)
+  option(TINT_BUILD_TESTS "Build tests" OFF)
+  if (NOT APPLE)
+    option(TINT_BUILD_MSL_WRITER "Build the MSL output writer" OFF)
+  endif()
+  if(WIN32)
+    option(TINT_BUILD_SPV_READER "Build the SPIR-V input reader" OFF)
+    option(TINT_BUILD_WGSL_READER "Build the WGSL input reader" ON)
+    option(TINT_BUILD_GLSL_WRITER "Build the GLSL output writer" OFF)
+    option(TINT_BUILD_GLSL_VALIDATOR "Build the GLSL output validator" OFF)
+    option(TINT_BUILD_SPV_WRITER "Build the SPIR-V output writer" OFF)
+    option(TINT_BUILD_WGSL_WRITER "Build the WGSL output writer" ON)
+  endif()
+
+  add_subdirectory("${IMGUI_DAWN_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/dawn" EXCLUDE_FROM_ALL)
+
+  set(LIBRARIES webgpu_dawn webgpu_cpp webgpu_glfw glfw)
+endif()
+
+add_executable(example_glfw_wgpu
+  main.cpp
+  # backend files
+  ${IMGUI_DIR}/backends/imgui_impl_glfw.cpp
+  ${IMGUI_DIR}/backends/imgui_impl_wgpu.cpp
+  # Dear ImGui files
+  ${IMGUI_DIR}/imgui.cpp
+  ${IMGUI_DIR}/imgui_draw.cpp
+  ${IMGUI_DIR}/imgui_demo.cpp
+  ${IMGUI_DIR}/imgui_tables.cpp
+  ${IMGUI_DIR}/imgui_widgets.cpp
+)
+IF(NOT EMSCRIPTEN)
+  target_compile_definitions(example_glfw_wgpu PUBLIC
+    "IMGUI_IMPL_WEBGPU_BACKEND_DAWN"
+  )
+endif()
+target_include_directories(example_glfw_wgpu PUBLIC
+  ${IMGUI_DIR}
+  ${IMGUI_DIR}/backends
+)
+
+target_link_libraries(example_glfw_wgpu PUBLIC ${LIBRARIES})
+
+# Emscripten settings
+if(EMSCRIPTEN)
+  if("${IMGUI_EMSCRIPTEN_GLFW3}" STREQUAL "--use-port=contrib.glfw3")
+    target_compile_options(example_glfw_wgpu PUBLIC
+        "${IMGUI_EMSCRIPTEN_GLFW3}"
+    )
+  endif()
+  message(STATUS "Using ${IMGUI_EMSCRIPTEN_GLFW3} GLFW implementation")
+  target_link_options(example_glfw_wgpu PRIVATE
+    "-sUSE_WEBGPU=1"
+    "${IMGUI_EMSCRIPTEN_GLFW3}"
+    "-sWASM=1"
+    "-sALLOW_MEMORY_GROWTH=1"
+    "-sNO_EXIT_RUNTIME=0"
+    "-sASSERTIONS=1"
+    "-sDISABLE_EXCEPTION_CATCHING=1"
+    "-sNO_FILESYSTEM=1"
+  )
+  set_target_properties(example_glfw_wgpu PROPERTIES OUTPUT_NAME "index")
+  # copy our custom index.html to build directory
+  add_custom_command(TARGET example_glfw_wgpu POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different "${CMAKE_CURRENT_LIST_DIR}/web/index.html" $<TARGET_FILE_DIR:example_glfw_wgpu>
+  )
+endif()

external/imgui/imgui/examples/example_glfw_wgpu/README.md

@@ -6,7 +6,7 @@
 
 - You may also refer to our [Continuous Integration setup](https://github.com/ocornut/imgui/tree/master/.github/workflows) for Emscripten setup.
 
-- Then build using `make` while in the `example_emscripten_wgpu/` directory.
+- Then build using `make -f Makefile.emscripten` while in the `example_glfw_wgpu/` directory.
 
 - Requires recent Emscripten as WGPU is still a work-in-progress API.
 
@@ -18,7 +18,7 @@ To run on a local machine:
 - Otherwise, generally you will need a local webserver:
   - Quoting [https://emscripten.org/docs/getting_started](https://emscripten.org/docs/getting_started/Tutorial.html#generating-html):<br>
 _"Unfortunately several browsers (including Chrome, Safari, and Internet Explorer) do not support file:// [XHR](https://emscripten.org/docs/site/glossary.html#term-xhr) requests, and can’t load extra files needed by the HTML (like a .wasm file, or packaged file data as mentioned lower down). For these browsers you’ll need to serve the files using a [local webserver](https://emscripten.org/docs/getting_started/FAQ.html#faq-local-webserver) and then open http://localhost:8000/hello.html."_
-  - Emscripten SDK has a handy `emrun` command: `emrun web/example_emscripten_opengl3.html --browser firefox` which will spawn a temporary local webserver (in Firefox). See https://emscripten.org/docs/compiling/Running-html-files-with-emrun.html for details.
+  - Emscripten SDK has a handy `emrun` command: `emrun web/example_glfw_wgpu.html --browser firefox` which will spawn a temporary local webserver (in Firefox). See https://emscripten.org/docs/compiling/Running-html-files-with-emrun.html for details.
   - You may use Python 3 builtin webserver: `python -m http.server -d web` (this is what `make serve` uses).
   - You may use Python 2 builtin webserver: `cd web && python -m SimpleHTTPServer`.
   - If you are accessing the files over a network, certain browsers, such as Firefox, will restrict Gamepad API access to secure contexts only (e.g. https only).

external/imgui/imgui/examples/example_glfw_wgpu/main.cpp

@@ -0,0 +1,350 @@
+// Dear ImGui: standalone example application for using GLFW + WebGPU
+// - Emscripten is supported for publishing on web. See https://emscripten.org.
+// - Dawn is used as a WebGPU implementation on desktop.
+
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_wgpu.h"
+#include <stdio.h>
+
+#ifdef __EMSCRIPTEN__
+#include <emscripten.h>
+#include <emscripten/html5.h>
+#include <emscripten/html5_webgpu.h>
+#else
+#include <webgpu/webgpu_glfw.h>
+#endif
+
+#include <GLFW/glfw3.h>
+#include <webgpu/webgpu.h>
+#include <webgpu/webgpu_cpp.h>
+
+// This example can also compile and run with Emscripten! See 'Makefile.emscripten' for details.
+#ifdef __EMSCRIPTEN__
+#include "../libs/emscripten/emscripten_mainloop_stub.h"
+#endif
+
+// Global WebGPU required states
+static WGPUInstance      wgpu_instance = nullptr;
+static WGPUDevice        wgpu_device = nullptr;
+static WGPUSurface       wgpu_surface = nullptr;
+static WGPUTextureFormat wgpu_preferred_fmt = WGPUTextureFormat_RGBA8Unorm;
+static WGPUSwapChain     wgpu_swap_chain = nullptr;
+static int               wgpu_swap_chain_width = 1280;
+static int               wgpu_swap_chain_height = 720;
+
+// Forward declarations
+static bool InitWGPU(GLFWwindow* window);
+static void CreateSwapChain(int width, int height);
+
+static void glfw_error_callback(int error, const char* description)
+{
+    printf("GLFW Error %d: %s\n", error, description);
+}
+
+static void wgpu_error_callback(WGPUErrorType error_type, const char* message, void*)
+{
+    const char* error_type_lbl = "";
+    switch (error_type)
+    {
+    case WGPUErrorType_Validation:  error_type_lbl = "Validation"; break;
+    case WGPUErrorType_OutOfMemory: error_type_lbl = "Out of memory"; break;
+    case WGPUErrorType_Unknown:     error_type_lbl = "Unknown"; break;
+    case WGPUErrorType_DeviceLost:  error_type_lbl = "Device lost"; break;
+    default:                        error_type_lbl = "Unknown";
+    }
+    printf("%s error: %s\n", error_type_lbl, message);
+}
+
+// Main code
+int main(int, char**)
+{
+    glfwSetErrorCallback(glfw_error_callback);
+    if (!glfwInit())
+        return 1;
+
+    // Make sure GLFW does not initialize any graphics context.
+    // This needs to be done explicitly later.
+    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+    GLFWwindow* window = glfwCreateWindow(wgpu_swap_chain_width, wgpu_swap_chain_height, "Dear ImGui GLFW+WebGPU example", nullptr, nullptr);
+    if (window == nullptr)
+        return 1;
+
+    // Initialize the WebGPU environment
+    if (!InitWGPU(window))
+    {
+        if (window)
+            glfwDestroyWindow(window);
+        glfwTerminate();
+        return 1;
+    }
+    CreateSwapChain(wgpu_swap_chain_width, wgpu_swap_chain_height);
+    glfwShowWindow(window);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsLight();
+
+    // Setup Platform/Renderer backends
+    ImGui_ImplGlfw_InitForOther(window, true);
+#ifdef __EMSCRIPTEN__
+    ImGui_ImplGlfw_InstallEmscriptenCallbacks(window, "#canvas");
+#endif
+    ImGui_ImplWGPU_InitInfo init_info;
+    init_info.Device = wgpu_device;
+    init_info.NumFramesInFlight = 3;
+    init_info.RenderTargetFormat = wgpu_preferred_fmt;
+    init_info.DepthStencilFormat = WGPUTextureFormat_Undefined;
+    ImGui_ImplWGPU_Init(&init_info);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return a nullptr. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
+    // - Read 'docs/FONTS.md' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    // - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
+    //io.Fonts->AddFontDefault();
+#ifndef IMGUI_DISABLE_FILE_FUNCTIONS
+    //io.Fonts->AddFontFromFileTTF("fonts/segoeui.ttf", 18.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("fonts/ArialUni.ttf", 18.0f, nullptr, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != nullptr);
+#endif
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+#ifdef __EMSCRIPTEN__
+    // For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
+    // You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
+    io.IniFilename = nullptr;
+    EMSCRIPTEN_MAINLOOP_BEGIN
+#else
+    while (!glfwWindowShouldClose(window))
+#endif
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        glfwPollEvents();
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
+        }
+
+        // React to changes in screen size
+        int width, height;
+        glfwGetFramebufferSize((GLFWwindow*)window, &width, &height);
+        if (width != wgpu_swap_chain_width || height != wgpu_swap_chain_height)
+        {
+            ImGui_ImplWGPU_InvalidateDeviceObjects();
+            CreateSwapChain(width, height);
+            ImGui_ImplWGPU_CreateDeviceObjects();
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplWGPU_NewFrame();
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                                // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");                     // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);            // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);                  // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color);       // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                                  // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);         // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+
+#ifndef __EMSCRIPTEN__
+        // Tick needs to be called in Dawn to display validation errors
+        wgpuDeviceTick(wgpu_device);
+#endif
+
+        WGPURenderPassColorAttachment color_attachments = {};
+        color_attachments.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
+        color_attachments.loadOp = WGPULoadOp_Clear;
+        color_attachments.storeOp = WGPUStoreOp_Store;
+        color_attachments.clearValue = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
+        color_attachments.view = wgpuSwapChainGetCurrentTextureView(wgpu_swap_chain);
+
+        WGPURenderPassDescriptor render_pass_desc = {};
+        render_pass_desc.colorAttachmentCount = 1;
+        render_pass_desc.colorAttachments = &color_attachments;
+        render_pass_desc.depthStencilAttachment = nullptr;
+
+        WGPUCommandEncoderDescriptor enc_desc = {};
+        WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(wgpu_device, &enc_desc);
+
+        WGPURenderPassEncoder pass = wgpuCommandEncoderBeginRenderPass(encoder, &render_pass_desc);
+        ImGui_ImplWGPU_RenderDrawData(ImGui::GetDrawData(), pass);
+        wgpuRenderPassEncoderEnd(pass);
+
+        WGPUCommandBufferDescriptor cmd_buffer_desc = {};
+        WGPUCommandBuffer cmd_buffer = wgpuCommandEncoderFinish(encoder, &cmd_buffer_desc);
+        WGPUQueue queue = wgpuDeviceGetQueue(wgpu_device);
+        wgpuQueueSubmit(queue, 1, &cmd_buffer);
+
+#ifndef __EMSCRIPTEN__
+        wgpuSwapChainPresent(wgpu_swap_chain);
+#endif
+
+        wgpuTextureViewRelease(color_attachments.view);
+        wgpuRenderPassEncoderRelease(pass);
+        wgpuCommandEncoderRelease(encoder);
+        wgpuCommandBufferRelease(cmd_buffer);
+    }
+#ifdef __EMSCRIPTEN__
+    EMSCRIPTEN_MAINLOOP_END;
+#endif
+
+    // Cleanup
+    ImGui_ImplWGPU_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+
+    return 0;
+}
+
+#ifndef __EMSCRIPTEN__
+static WGPUAdapter RequestAdapter(WGPUInstance instance)
+{
+    auto onAdapterRequestEnded = [](WGPURequestAdapterStatus status, WGPUAdapter adapter, const char* message, void* pUserData)
+    {
+        if (status == WGPURequestAdapterStatus_Success)
+            *(WGPUAdapter*)(pUserData) = adapter;
+        else
+            printf("Could not get WebGPU adapter: %s\n", message);
+};
+    WGPUAdapter adapter;
+    wgpuInstanceRequestAdapter(instance, nullptr, onAdapterRequestEnded, (void*)&adapter);
+    return adapter;
+}
+
+static WGPUDevice RequestDevice(WGPUAdapter& adapter)
+{
+    auto onDeviceRequestEnded = [](WGPURequestDeviceStatus status, WGPUDevice device, const char* message, void* pUserData)
+    {
+        if (status == WGPURequestDeviceStatus_Success)
+            *(WGPUDevice*)(pUserData) = device;
+        else
+            printf("Could not get WebGPU device: %s\n", message);
+    };
+    WGPUDevice device;
+    wgpuAdapterRequestDevice(adapter, nullptr, onDeviceRequestEnded, (void*)&device);
+    return device;
+}
+#endif
+
+static bool InitWGPU(GLFWwindow* window)
+{
+    wgpu::Instance instance = wgpuCreateInstance(nullptr);
+
+#ifdef __EMSCRIPTEN__
+    wgpu_device = emscripten_webgpu_get_device();
+    if (!wgpu_device)
+        return false;
+#else
+    WGPUAdapter adapter = RequestAdapter(instance.Get());
+    if (!adapter)
+        return false;
+    wgpu_device = RequestDevice(adapter);
+#endif
+
+#ifdef __EMSCRIPTEN__
+    wgpu::SurfaceDescriptorFromCanvasHTMLSelector html_surface_desc = {};
+    html_surface_desc.selector = "#canvas";
+    wgpu::SurfaceDescriptor surface_desc = {};
+    surface_desc.nextInChain = &html_surface_desc;
+    wgpu::Surface surface = instance.CreateSurface(&surface_desc);
+
+    wgpu::Adapter adapter = {};
+    wgpu_preferred_fmt = (WGPUTextureFormat)surface.GetPreferredFormat(adapter);
+#else
+    wgpu::Surface surface = wgpu::glfw::CreateSurfaceForWindow(instance, window);
+    if (!surface)
+        return false;
+    wgpu_preferred_fmt = WGPUTextureFormat_BGRA8Unorm;
+#endif
+
+    wgpu_instance = instance.MoveToCHandle();
+    wgpu_surface = surface.MoveToCHandle();
+
+    wgpuDeviceSetUncapturedErrorCallback(wgpu_device, wgpu_error_callback, nullptr);
+
+    return true;
+}
+
+static void CreateSwapChain(int width, int height)
+{
+    if (wgpu_swap_chain)
+        wgpuSwapChainRelease(wgpu_swap_chain);
+    wgpu_swap_chain_width = width;
+    wgpu_swap_chain_height = height;
+    WGPUSwapChainDescriptor swap_chain_desc = {};
+    swap_chain_desc.usage = WGPUTextureUsage_RenderAttachment;
+    swap_chain_desc.format = wgpu_preferred_fmt;
+    swap_chain_desc.width = width;
+    swap_chain_desc.height = height;
+    swap_chain_desc.presentMode = WGPUPresentMode_Fifo;
+    wgpu_swap_chain = wgpuDeviceCreateSwapChain(wgpu_device, wgpu_surface, &swap_chain_desc);
+}

external/imgui/imgui/examples/example_glfw_wgpu/web/index.html

@@ -3,7 +3,7 @@
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
-    <title>Dear ImGui Emscripten+WebGPU example</title>
+    <title>Dear ImGui Emscripten+GLFW+WebGPU example</title>
     <style>
         body { margin: 0; background-color: black }
         .emscripten {
@@ -63,6 +63,10 @@
 
       // Initialize the graphics adapter
       {
+          if (!navigator.gpu) {
+            throw Error("WebGPU not supported.");
+          }
+
           const adapter = await navigator.gpu.requestAdapter();
           const device = await adapter.requestDevice();
           Module.preinitializedWebGPUDevice = device;

external/imgui/imgui/examples/example_null/Makefile

@@ -1,6 +1,6 @@
 #
 # Cross Platform Makefile
-# Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
+# Compatible with MSYS2/MINGW, Ubuntu 14.04.1+ and Mac OS X
 #
 # Important: This is a "null backend" application, with no visible output or interaction!
 # This is used for testing purpose and continuous integration, and has little use for end-user.

external/imgui/imgui/examples/example_sdl2_directx11/main.cpp

@@ -126,6 +126,11 @@ int main(int, char**)
                 CreateRenderTarget();
             }
         }
+        if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+        {
+            SDL_Delay(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplDX11_NewFrame();