imgui update, not on version (1.91.0 WIP) Merge commit '1dccce80976b0dc3d9847ebe2e540244046f6ef6'

2024-07-18 10:52:26 +02:00 · 2024-07-18 10:52:26 +02:00 · 5230770062
commit 5230770062
parent 7f2df29304 1dccce8097
32 changed files with 1382 additions and 587 deletions
--- a/external/imgui/imgui/.gitignore
+++ b/external/imgui/imgui/.gitignore
@ -3,6 +3,7 @@

 ## Dear ImGui artifacts
 imgui.ini
+imgui*.ini

 ## General build artifacts
 *.o
--- a/external/imgui/imgui/backends/imgui_impl_allegro5.cpp
+++ b/external/imgui/imgui/backends/imgui_impl_allegro5.cpp
@ -62,8 +62,8 @@
 #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
--- a/external/imgui/imgui/backends/imgui_impl_glfw.cpp
+++ b/external/imgui/imgui/backends/imgui_impl_glfw.cpp
@ -20,6 +20,9 @@

 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  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)
@ -100,6 +103,11 @@
 #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.
@ -131,7 +139,7 @@ struct ImGui_ImplGlfw_Data
    ImVec2                  LastValidMousePos;
    bool                    InstalledCallbacks;
    bool                    CallbacksChainForAllWindows;
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
    const char*             CanvasSelector;
 #endif

@ -145,7 +153,7 @@ struct ImGui_ImplGlfw_Data
    GLFWcharfun             PrevUserCallbackChar;
    GLFWmonitorfun          PrevUserCallbackMonitor;
 #ifdef _WIN32
-    WNDPROC                 GlfwWndProc;
+    WNDPROC                 PrevWndProc;
 #endif

    ImGui_ImplGlfw_Data()   { memset((void*)this, 0, sizeof(*this)); }
@ -335,7 +343,7 @@ 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
@ -346,7 +354,7 @@ void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yo

 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.
@ -357,7 +365,7 @@ 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)
@ -454,7 +462,7 @@ 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.
@ -497,7 +505,7 @@ 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

@ -553,6 +561,10 @@ void ImGui_ImplGlfw_SetCallbacksChainForAllWindows(bool chain_for_all_windows)
    bd->CallbacksChainForAllWindows = chain_for_all_windows;
 }

+#ifdef __EMSCRIPTEN__
+EM_JS(void, ImGui_ImplGlfw_EmscriptenOpenURL, (char const* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); });
+#endif
+
 static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
 {
    ImGuiIO& io = ImGui::GetIO();
@ -573,6 +585,9 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
    io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
    io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
    io.ClipboardUserData = bd->Window;
+#ifdef __EMSCRIPTEN__
+    io.PlatformOpenInShellFn = [](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,
@ -603,15 +618,10 @@ 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__)
@ -622,8 +632,8 @@ 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

@ -654,18 +664,19 @@ 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;
@ -682,7 +693,7 @@ static void ImGui_ImplGlfw_UpdateMouseData()
    // (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;
@ -740,7 +751,7 @@ 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;
@ -814,7 +825,7 @@ void ImGui_ImplGlfw_NewFrame()
    ImGui_ImplGlfw_UpdateGamepads();
 }

-#ifdef __EMSCRIPTEN__
+#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;
@ -835,7 +846,7 @@ 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();
@ -847,8 +858,24 @@ 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

 //-----------------------------------------------------------------------------

--- a/external/imgui/imgui/backends/imgui_impl_glfw.h
+++ b/external/imgui/imgui/backends/imgui_impl_glfw.h
@ -30,9 +30,10 @@ IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool ins
 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
--- a/external/imgui/imgui/backends/imgui_impl_opengl2.cpp
+++ b/external/imgui/imgui/backends/imgui_impl_opengl2.cpp
@ -22,6 +22,7 @@

 // 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 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).
@ -113,6 +114,8 @@ void    ImGui_ImplOpenGL2_NewFrame()

    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)
--- a/external/imgui/imgui/backends/imgui_impl_opengl3.cpp
+++ b/external/imgui/imgui/backends/imgui_impl_opengl3.cpp
@ -22,6 +22,7 @@

 // 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.
@ -402,6 +403,8 @@ void    ImGui_ImplOpenGL3_NewFrame()

    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)
--- a/external/imgui/imgui/backends/imgui_impl_osx.mm
+++ b/external/imgui/imgui/backends/imgui_impl_osx.mm
@ -29,6 +29,7 @@

 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  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).
@ -80,6 +81,7 @@ struct ImGui_ImplOSX_Data
    KeyEventResponder*          KeyEventResponder;
    NSTextInputContext*         InputContext;
    id                          Monitor;
+    NSWindow*                   Window;

    ImGui_ImplOSX_Data()        { memset(this, 0, sizeof(*this)); }
 };
@ -133,7 +135,7 @@ 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];
@ -402,6 +404,9 @@ bool ImGui_ImplOSX_Init(NSView* view)
    //io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)

    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;
@ -460,7 +465,7 @@ bool ImGui_ImplOSX_Init(NSView* view)
    [view addSubview:bd->KeyEventResponder];
    ImGui_ImplOSX_AddTrackingArea(view);

-    io.SetPlatformImeDataFn = [](ImGuiViewport* viewport, ImGuiPlatformImeData* data) -> void
+    io.PlatformSetImeDataFn = [](ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data) -> void
    {
        ImGui_ImplOSX_Data* bd = ImGui_ImplOSX_GetBackendData();
        if (data->WantVisible)
--- a/external/imgui/imgui/backends/imgui_impl_sdl2.cpp
+++ b/external/imgui/imgui/backends/imgui_impl_sdl2.cpp
@ -21,6 +21,8 @@

 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  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)
@ -90,9 +92,12 @@
 // 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
@ -150,7 +155,7 @@ static void ImGui_ImplSDL2_SetClipboardText(void*, const char* 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)
    {
@ -163,8 +168,9 @@ static void ImGui_ImplSDL2_SetPlatformImeData(ImGuiViewport*, ImGuiPlatformImeDa
    }
 }

-static ImGuiKey ImGui_ImplSDL2_KeycodeToImGuiKey(int keycode)
+static ImGuiKey ImGui_ImplSDL2_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
 {
+    IM_UNUSED(scancode);
    switch (keycode)
    {
        case SDLK_TAB: return ImGuiKey_Tab;
@ -286,6 +292,7 @@ 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;
 }
@ -361,7 +368,7 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
        case SDL_KEYUP:
        {
            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;
@ -397,7 +404,11 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
    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();
@ -428,7 +439,10 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer)
    io.SetClipboardTextFn = ImGui_ImplSDL2_SetClipboardText;
    io.GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;
    io.ClipboardUserData = nullptr;
-    io.SetPlatformImeDataFn = ImGui_ImplSDL2_SetPlatformImeData;
+    io.PlatformSetImeDataFn = ImGui_ImplSDL2_PlatformSetImeData;
+#ifdef __EMSCRIPTEN__
+    io.PlatformOpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplSDL2_EmscriptenOpenURL(url); return true; };
+#endif

    // Gamepad handling
    bd->GamepadMode = ImGui_ImplSDL2_GamepadMode_AutoFirst;
@ -448,6 +462,7 @@ 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*)window;
    main_viewport->PlatformHandleRaw = nullptr;
    SDL_SysWMinfo info;
    SDL_VERSION(&info.version);
@ -481,13 +496,13 @@ 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)
@ -495,7 +510,7 @@ 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)
@ -503,22 +518,22 @@ 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();
--- a/external/imgui/imgui/backends/imgui_impl_sdl3.cpp
+++ b/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**)

 // 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:
-//  [ ] Platform: IME SUPPORT IS BROKEN IN SDL3 BECAUSE INPUTS GETS SENT TO BOTH APP AND IME + 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 +21,12 @@

 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  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.
@ -76,6 +81,9 @@ struct ImGui_ImplSDL3_Data
    Uint64                  Time;
    char*                   ClipboardTextData;

+    // IME handling
+    SDL_Window*             ImeWindow;
+
    // Mouse handling
    Uint32                  MouseWindowID;
    int                     MouseButtonsDown;
@ -116,8 +124,15 @@ static void ImGui_ImplSDL3_SetClipboardText(void*, 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_Window* window = (SDL_Window*)viewport->PlatformHandle;
+    if ((data->WantVisible == false || bd->ImeWindow != window) && bd->ImeWindow != NULL)
+    {
+        SDL_StopTextInput(bd->ImeWindow);
+        bd->ImeWindow = nullptr;
+    }
    if (data->WantVisible)
    {
        SDL_Rect r;
@ -125,17 +140,36 @@ 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_StartTextInput();
-    }
-    else
-    {
-        SDL_StopTextInput();
+        SDL_SetTextInputArea(window, &r, 0);
+        SDL_StartTextInput(window);
+        bd->ImeWindow = window;
    }
 }

-static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
+static 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;
@ -169,23 +203,6 @@ static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
        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;
@ -205,32 +222,32 @@ 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;
@ -257,6 +274,7 @@ 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;
 }
@ -326,10 +344,11 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
        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);
+            //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:
@ -365,12 +384,12 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)

 static void ImGui_ImplSDL3_SetupPlatformHandles(ImGuiViewport* viewport, SDL_Window* window)
 {
-    IM_UNUSED(window);
+    viewport->PlatformHandle = 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
 }

@ -406,7 +425,7 @@ static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void
    io.SetClipboardTextFn = ImGui_ImplSDL3_SetClipboardText;
    io.GetClipboardTextFn = ImGui_ImplSDL3_GetClipboardText;
    io.ClipboardUserData = nullptr;
-    io.SetPlatformImeDataFn = ImGui_ImplSDL3_SetPlatformImeData;
+    io.PlatformSetImeDataFn = ImGui_ImplSDL3_PlatformSetImeData;

    // Gamepad handling
    bd->GamepadMode = ImGui_ImplSDL3_GamepadMode_AutoFirst;
--- a/external/imgui/imgui/backends/imgui_impl_sdl3.h
+++ b/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**)

 // 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:
-//  [ ] Platform: IME SUPPORT IS BROKEN IN SDL3 BECAUSE INPUTS GETS SENT TO BOTH APP AND IME + 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.
--- a/external/imgui/imgui/backends/imgui_impl_sdlrenderer3.cpp
+++ b/external/imgui/imgui/backends/imgui_impl_sdlrenderer3.cpp
@ -20,6 +20,7 @@
 // - 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.
@ -44,8 +45,10 @@
 // SDL_Renderer data
 struct ImGui_ImplSDLRenderer3_Data
 {
-    SDL_Renderer*   Renderer;       // Main viewport's renderer
-    SDL_Texture*    FontTexture;
+    SDL_Renderer*           Renderer;       // Main viewport's renderer
+    SDL_Texture*            FontTexture;
+    ImVector<SDL_FColor>    ColorBuffer;
+
    ImGui_ImplSDLRenderer3_Data()   { memset((void*)this, 0, sizeof(*this)); }
 };

@ -106,8 +109,28 @@ void ImGui_ImplSDLRenderer3_NewFrame()
        ImGui_ImplSDLRenderer3_CreateDeviceObjects();
 }

+// 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)
+{
+    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.
@ -183,7 +206,7 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer*

                // Bind texture, Draw
 				SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
-                SDL_RenderGeometryRaw(renderer, tex,
+                SDL_RenderGeometryRaw8BitColor(renderer, bd->ColorBuffer, tex,
                    xy, (int)sizeof(ImDrawVert),
                    color, (int)sizeof(ImDrawVert),
                    uv, (int)sizeof(ImDrawVert),
--- a/external/imgui/imgui/backends/imgui_impl_vulkan.h
+++ b/external/imgui/imgui/backends/imgui_impl_vulkan.h
@ -55,7 +55,7 @@

 // Vulkan includes
 #ifdef IMGUI_IMPL_VULKAN_USE_VOLK
-#include <Volk/volk.h>
+#include <volk.h>
 #else
 #include <vulkan/vulkan.h>
 #endif
--- a/external/imgui/imgui/backends/imgui_impl_win32.cpp
+++ b/external/imgui/imgui/backends/imgui_impl_win32.cpp
@ -21,6 +21,7 @@

 // 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.
@ -98,6 +99,7 @@ typedef DWORD(WINAPI* PFN_XInputGetState)(DWORD, XINPUT_STATE*);
 #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

@ -169,7 +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
@ -292,7 +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()
--- a/external/imgui/imgui/docs/CHANGELOG.txt
+++ b/external/imgui/imgui/docs/CHANGELOG.txt
@ -35,6 +35,154 @@ 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 1.91.0 WIP (In Progress)
+-----------------------------------------------------------------------
+
+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.
+- 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 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)
+  Default to use ShellExecute() under Windows, and system("") under Mac/Linux/etc.
+  Added IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS to disable default implementation.
+- 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.
+- 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) as the end of your iteration
+  loop to position the layout cursor correctly. This is done automatically if provided a count to Begin().
+- Style: close button and collapse/window-menu button hover highlight made rectangular instead of round.
+- Debug Tools: Added IMGUI_DEBUG_LOG(), ImGui::DebugLog() in public API. (#5855)
+  Debug log entries add a imgui frame counter prefix + are redirected to ShowDebugLogWindow() and
+  other configurable locations. Always call IMGUI_DEBUG_LOG() for maximum stripping in caller code.
+- Debug Tools: Debug Log: Added "Configure Outputs.." button. (#5855)
+- Demo: Reworked "Property Editor" demo in a manner that more ressemble the tree data and
+  struct description data that a real application would want to use.
+- 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: 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)
 -----------------------------------------------------------------------
@ -800,7 +948,7 @@ 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.
@ -838,10 +986,10 @@ 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
--- a/external/imgui/imgui/docs/FAQ.md
+++ b/external/imgui/imgui/docs/FAQ.md
@ -639,7 +639,7 @@ 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 io.PlatformSetImeDataFn() to set your Microsoft IME position correctly.

 ##### [Return to Index](#index)

--- a/external/imgui/imgui/examples/example_glfw_opengl3/main.cpp
+++ b/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);

--- a/external/imgui/imgui/examples/example_glfw_vulkan/main.cpp
+++ b/external/imgui/imgui/examples/example_glfw_vulkan/main.cpp
@ -25,7 +25,7 @@
 // Volk headers
 #ifdef IMGUI_IMPL_VULKAN_USE_VOLK
 #define VOLK_IMPLEMENTATION
-#include <Volk/volk.h>
+#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.
@ -485,17 +485,14 @@ 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;
        }

        // Start the Dear ImGui frame
--- a/external/imgui/imgui/examples/example_glfw_wgpu/CMakeLists.txt
+++ b/external/imgui/imgui/examples/example_glfw_wgpu/CMakeLists.txt
@ -27,6 +27,12 @@ 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()
@ -82,9 +88,16 @@ 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}"
+        "-DEMSCRIPTEN_USE_PORT_CONTRIB_GLFW3" # unnecessary beyond emscripten 3.1.59
+    )
+  endif()
+  message(STATUS "Using ${IMGUI_EMSCRIPTEN_GLFW3} GLFW implementation")
  target_link_options(example_glfw_wgpu PRIVATE
    "-sUSE_WEBGPU=1"
-    "-sUSE_GLFW=3"
+    "${IMGUI_EMSCRIPTEN_GLFW3}"
    "-sWASM=1"
    "-sALLOW_MEMORY_GROWTH=1"
    "-sNO_EXIT_RUNTIME=0"
--- a/external/imgui/imgui/examples/example_glfw_wgpu/main.cpp
+++ b/external/imgui/imgui/examples/example_glfw_wgpu/main.cpp
@ -101,7 +101,7 @@ int main(int, char**)
    // Setup Platform/Renderer backends
    ImGui_ImplGlfw_InitForOther(window, true);
 #ifdef __EMSCRIPTEN__
-    ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback("#canvas");
+    ImGui_ImplGlfw_InstallEmscriptenCallbacks(window, "#canvas");
 #endif
    ImGui_ImplWGPU_InitInfo init_info;
    init_info.Device = wgpu_device;
--- a/external/imgui/imgui/examples/example_sdl2_vulkan/main.cpp
+++ b/external/imgui/imgui/examples/example_sdl2_vulkan/main.cpp
@ -24,7 +24,7 @@
 // Volk headers
 #ifdef IMGUI_IMPL_VULKAN_USE_VOLK
 #define VOLK_IMPLEMENTATION
-#include <Volk/volk.h>
+#include <volk.h>
 #endif

 //#define APP_USE_UNLIMITED_FRAME_RATE
@ -494,17 +494,14 @@ int main(int, char**)
        }

        // Resize swap chain?
-        if (g_SwapChainRebuild)
+        int fb_width, fb_height;
+        SDL_GetWindowSize(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;
-            SDL_GetWindowSize(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;
        }

        // Start the Dear ImGui frame
--- a/external/imgui/imgui/examples/example_sdl3_opengl3/main.cpp
+++ b/external/imgui/imgui/examples/example_sdl3_opengl3/main.cpp
@ -57,9 +57,6 @@ int main(int, char**)
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
 #endif

-    // Enable native IME.
-    SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
-
    // Create window with graphics context
    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
@ -199,7 +196,7 @@ int main(int, char**)
    ImGui_ImplSDL3_Shutdown();
    ImGui::DestroyContext();

-    SDL_GL_DeleteContext(gl_context);
+    SDL_GL_DestroyContext(gl_context);
    SDL_DestroyWindow(window);
    SDL_Quit();

--- a/external/imgui/imgui/examples/example_sdl3_sdlrenderer3/main.cpp
+++ b/external/imgui/imgui/examples/example_sdl3_sdlrenderer3/main.cpp
@ -31,9 +31,6 @@ int main(int, char**)
        return -1;
    }

-    // Enable native IME.
-    SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
-
    // Create window with SDL_Renderer graphics context
    Uint32 window_flags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_HIDDEN;
    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL3+SDL_Renderer example", 1280, 720, window_flags);
--- a/external/imgui/imgui/examples/imgui_examples.sln
+++ b/external/imgui/imgui/examples/imgui_examples.sln
@ -29,6 +29,10 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_win32_opengl3", "ex
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_sdl2_sdlrenderer2", "example_sdl2_sdlrenderer2\example_sdl2_sdlrenderer2.vcxproj", "{0C0B2BEA-311F-473C-9652-87923EF639E3}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_sdl3_opengl3", "example_sdl3_opengl3\example_sdl3_opengl3.vcxproj", "{84AAA301-84FE-428B-9E3E-817BC8123C0C}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_sdl3_sdlrenderer3", "example_sdl3_sdlrenderer3\example_sdl3_sdlrenderer3.vcxproj", "{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@ -141,6 +145,22 @@ Global
 		{0C0B2BEA-311F-473C-9652-87923EF639E3}.Release|Win32.Build.0 = Release|Win32
 		{0C0B2BEA-311F-473C-9652-87923EF639E3}.Release|x64.ActiveCfg = Release|x64
 		{0C0B2BEA-311F-473C-9652-87923EF639E3}.Release|x64.Build.0 = Release|x64
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Debug|Win32.ActiveCfg = Debug|Win32
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Debug|Win32.Build.0 = Debug|Win32
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Debug|x64.ActiveCfg = Debug|x64
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Debug|x64.Build.0 = Debug|x64
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Release|Win32.ActiveCfg = Release|Win32
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Release|Win32.Build.0 = Release|Win32
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Release|x64.ActiveCfg = Release|x64
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Release|x64.Build.0 = Release|x64
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Debug|Win32.ActiveCfg = Debug|Win32
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Debug|Win32.Build.0 = Debug|Win32
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Debug|x64.ActiveCfg = Debug|x64
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Debug|x64.Build.0 = Debug|x64
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Release|Win32.ActiveCfg = Release|Win32
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Release|Win32.Build.0 = Release|Win32
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Release|x64.ActiveCfg = Release|x64
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
--- a/external/imgui/imgui/imconfig.h
+++ b/external/imgui/imgui/imconfig.h
@ -42,6 +42,7 @@
 //#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
 //#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, IME).
 //#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
+//#define IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS             // Don't implement default io.PlatformOpenInShellFn() handler (Win32: ShellExecute(), require shell32.lib/.a, Mac/Linux: use system("")).
 //#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
 //#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
 //#define IMGUI_DISABLE_FILE_FUNCTIONS                      // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
@ -49,6 +50,9 @@
 //#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
 //#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available

+//---- Enable Test Engine / Automation features.
+//#define IMGUI_ENABLE_TEST_ENGINE                          // Enable imgui_test_engine hooks. Generally set automatically by include "imgui_te_config.h", see Test Engine for details.
+
 //---- Include imgui_user.h at the end of imgui.h as a convenience
 // May be convenient for some users to only explicitly include vanilla imgui.h and have extra stuff included.
 //#define IMGUI_INCLUDE_IMGUI_USER_H
--- a/external/imgui/imgui/imgui.cpp
+++ b/external/imgui/imgui/imgui.cpp
--- a/external/imgui/imgui/imgui.h
+++ b/external/imgui/imgui/imgui.h
@ -1,4 +1,4 @@
-// dear imgui, v1.90.8
+// dear imgui, v1.91.0 WIP
 // (headers)

 // Help:
@ -27,8 +27,8 @@

 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
-#define IMGUI_VERSION       "1.90.8"
-#define IMGUI_VERSION_NUM   19080
+#define IMGUI_VERSION       "1.91.0 WIP"
+#define IMGUI_VERSION_NUM   19095
 #define IMGUI_HAS_TABLE

 /*
@ -39,7 +39,7 @@ Index of this file:
 // [SECTION] Dear ImGui end-user API functions
 // [SECTION] Flags & Enumerations
 // [SECTION] Tables API flags and structures (ImGuiTableFlags, ImGuiTableColumnFlags, ImGuiTableRowFlags, ImGuiTableBgTarget, ImGuiTableSortSpecs, ImGuiTableColumnSortSpecs)
-// [SECTION] Helpers: Memory allocations macros, ImVector<>
+// [SECTION] Helpers: Debug log, Memory allocations macros, ImVector<>
 // [SECTION] ImGuiStyle
 // [SECTION] ImGuiIO
 // [SECTION] Misc data structures (ImGuiInputTextCallbackData, ImGuiSizeCallbackData, ImGuiPayload)
@ -176,9 +176,10 @@ struct ImGuiKeyData;                // Storage for ImGuiIO and IsKeyDown(), IsKe
 struct ImGuiListClipper;            // Helper to manually clip large list of items
 struct ImGuiOnceUponAFrame;         // Helper for running a block of code not more than once a frame
 struct ImGuiPayload;                // User data payload for drag and drop operations
-struct ImGuiPlatformImeData;        // Platform IME data for io.SetPlatformImeDataFn() function.
+struct ImGuiPlatformImeData;        // Platform IME data for io.PlatformSetImeDataFn() function.
 struct ImGuiSizeCallbackData;       // Callback data when using SetNextWindowSizeConstraints() (rare/advanced use)
-struct ImGuiStorage;                // Helper for key->value storage
+struct ImGuiStorage;                // Helper for key->value storage (container sorted by key)
+struct ImGuiStoragePair;            // Helper for key->value storage (pair)
 struct ImGuiStyle;                  // Runtime data for styling/colors
 struct ImGuiTableSortSpecs;         // Sorting specifications for a table (often handling sort specs for a single column, occasionally more)
 struct ImGuiTableColumnSortSpecs;   // Sorting specification for one column of a table
@ -223,6 +224,7 @@ typedef int ImGuiFocusedFlags;      // -> enum ImGuiFocusedFlags_    // Flags: f
 typedef int ImGuiHoveredFlags;      // -> enum ImGuiHoveredFlags_    // Flags: for IsItemHovered(), IsWindowHovered() etc.
 typedef int ImGuiInputFlags;        // -> enum ImGuiInputFlags_      // Flags: for Shortcut(), SetNextItemShortcut()
 typedef int ImGuiInputTextFlags;    // -> enum ImGuiInputTextFlags_  // Flags: for InputText(), InputTextMultiline()
+typedef int ImGuiItemFlags;         // -> enum ImGuiItemFlags_       // Flags: for PushItemFlag(), shared by all items
 typedef int ImGuiKeyChord;          // -> ImGuiKey | ImGuiMod_XXX    // Flags: for IsKeyChordPressed(), Shortcut() etc. an ImGuiKey optionally OR-ed with one or more ImGuiMod_XXX values.
 typedef int ImGuiPopupFlags;        // -> enum ImGuiPopupFlags_      // Flags: for OpenPopup*(), BeginPopupContext*(), IsPopupOpen()
 typedef int ImGuiSelectableFlags;   // -> enum ImGuiSelectableFlags_ // Flags: for Selectable()
@ -435,10 +437,8 @@ namespace ImGui
    IMGUI_API void          PushStyleVar(ImGuiStyleVar idx, float val);                     // modify a style float variable. always use this if you modify the style after NewFrame().
    IMGUI_API void          PushStyleVar(ImGuiStyleVar idx, const ImVec2& val);             // modify a style ImVec2 variable. always use this if you modify the style after NewFrame().
    IMGUI_API void          PopStyleVar(int count = 1);
-    IMGUI_API void          PushTabStop(bool tab_stop);                                     // == tab stop enable. Allow focusing using TAB/Shift-TAB, enabled by default but you can disable it for certain widgets
-    IMGUI_API void          PopTabStop();
-    IMGUI_API void          PushButtonRepeat(bool repeat);                                  // in 'repeat' mode, Button*() functions return repeated true in a typematic manner (using io.KeyRepeatDelay/io.KeyRepeatRate setting). Note that you can call IsItemActive() after any Button() to tell if the button is held in the current frame.
-    IMGUI_API void          PopButtonRepeat();
+    IMGUI_API void          PushItemFlag(ImGuiItemFlags option, bool enabled);              // modify specified shared item flag, e.g. PushItemFlag(ImGuiItemFlags_NoTabStop, true)
+    IMGUI_API void          PopItemFlag();

    // Parameters stacks (current window)
    IMGUI_API void          PushItemWidth(float item_width);                                // push width of items for common large "item+label" widgets. >0.0f: width in pixels, <0.0f align xx pixels to the right of window (so -FLT_MIN always align width to the right side).
@ -542,6 +542,8 @@ namespace ImGui
    IMGUI_API bool          RadioButton(const char* label, int* v, int v_button);           // shortcut to handle the above pattern when value is an integer
    IMGUI_API void          ProgressBar(float fraction, const ImVec2& size_arg = ImVec2(-FLT_MIN, 0), const char* overlay = NULL);
    IMGUI_API void          Bullet();                                                       // draw a small circle + keep the cursor on the same line. advance cursor x position by GetTreeNodeToLabelSpacing(), same distance that TreeNode() uses
+    IMGUI_API bool          TextLink(const char* label);                                    // hyperlink text button, return true when clicked
+    IMGUI_API void          TextLinkOpenURL(const char* label, const char* url = NULL);     // hyperlink text button, automatically open file/url when clicked

    // Widgets: Images
    // - Read about ImTextureID here: https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples
@ -778,7 +780,7 @@ namespace ImGui
    //        -                   TableNextColumn()      -> Text("Hello 0") -> TableNextColumn()      -> Text("Hello 1")  // OK: TableNextColumn() automatically gets to next row!
    //        - TableNextRow()                           -> Text("Hello 0")                                               // Not OK! Missing TableSetColumnIndex() or TableNextColumn()! Text will not appear!
    // - 5. Call EndTable()
-    IMGUI_API bool          BeginTable(const char* str_id, int column, ImGuiTableFlags flags = 0, const ImVec2& outer_size = ImVec2(0.0f, 0.0f), float inner_width = 0.0f);
+    IMGUI_API bool          BeginTable(const char* str_id, int columns, ImGuiTableFlags flags = 0, const ImVec2& outer_size = ImVec2(0.0f, 0.0f), float inner_width = 0.0f);
    IMGUI_API void          EndTable();                                         // only call EndTable() if BeginTable() returns true!
    IMGUI_API void          TableNextRow(ImGuiTableRowFlags row_flags = 0, float min_row_height = 0.0f); // append into the first cell of a new row.
    IMGUI_API bool          TableNextColumn();                                  // append into the next column (or first column of next row if currently in last column). Return true when column is visible.
@ -811,6 +813,7 @@ namespace ImGui
    IMGUI_API const char*           TableGetColumnName(int column_n = -1);      // return "" if column didn't have a name declared by TableSetupColumn(). Pass -1 to use current column.
    IMGUI_API ImGuiTableColumnFlags TableGetColumnFlags(int column_n = -1);     // return column flags so you can query their Enabled/Visible/Sorted/Hovered status flags. Pass -1 to use current column.
    IMGUI_API void                  TableSetColumnEnabled(int column_n, bool v);// change user accessible enabled/disabled state of a column. Set to false to hide the column. User can use the context menu to change this themselves (right-click in headers, or right-click in columns body with ImGuiTableFlags_ContextMenuInBody)
+    IMGUI_API int                   TableGetHoveredColumn();                    // return hovered column. return -1 when table is not hovered. return columns_count if the unused space at the right of visible columns is hovered. Can also use (TableGetColumnFlags() & ImGuiTableColumnFlags_IsHovered) instead.
    IMGUI_API void                  TableSetBgColor(ImGuiTableBgTarget target, ImU32 color, int column_n = -1);  // change the color of a cell, row, or column. See ImGuiTableBgTarget_ flags for details.

    // Legacy Columns API (prefer using Tables!)
@ -859,6 +862,7 @@ namespace ImGui
    // Disabling [BETA API]
    // - Disable all user interactions and dim items visuals (applying style.DisabledAlpha over current colors)
    // - Those can be nested but it cannot be used to enable an already disabled section (a single BeginDisabled(true) in the stack is enough to keep everything disabled)
+    // - Tooltips windows by exception are opted out of disabling.
    // - BeginDisabled(false) essentially does nothing useful but is provided to facilitate use of boolean expressions. If you can avoid calling BeginDisabled(False)/EndDisabled() best to avoid it.
    IMGUI_API void          BeginDisabled(bool disabled = true);
    IMGUI_API void          EndDisabled();
@ -998,6 +1002,10 @@ namespace ImGui
    IMGUI_API void          DebugFlashStyleColor(ImGuiCol idx);
    IMGUI_API void          DebugStartItemPicker();
    IMGUI_API bool          DebugCheckVersionAndDataLayout(const char* version_str, size_t sz_io, size_t sz_style, size_t sz_vec2, size_t sz_vec4, size_t sz_drawvert, size_t sz_drawidx); // This is called by IMGUI_CHECKVERSION() macro.
+#ifndef IMGUI_DISABLE_DEBUG_TOOLS
+    IMGUI_API void          DebugLog(const char* fmt, ...)           IM_FMTARGS(1); // Call via IMGUI_DEBUG_LOG() for maximum stripping in caller code!
+    IMGUI_API void          DebugLogV(const char* fmt, va_list args) IM_FMTLIST(1);
+#endif

    // Memory Allocators
    // - Those functions are not reliant on the current context.
@ -1043,7 +1051,6 @@ enum ImGuiWindowFlags_
    ImGuiWindowFlags_NoInputs               = ImGuiWindowFlags_NoMouseInputs | ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus,

    // [Internal]
-    ImGuiWindowFlags_NavFlattened           = 1 << 23,  // [BETA] On child window: share focus scope, allow gamepad/keyboard navigation to cross over parent border to this child or between sibling child windows.
    ImGuiWindowFlags_ChildWindow            = 1 << 24,  // Don't use! For internal use by BeginChild()
    ImGuiWindowFlags_Tooltip                = 1 << 25,  // Don't use! For internal use by BeginTooltip()
    ImGuiWindowFlags_Popup                  = 1 << 26,  // Don't use! For internal use by BeginPopup()
@ -1053,6 +1060,7 @@ enum ImGuiWindowFlags_
    // Obsolete names
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    ImGuiWindowFlags_AlwaysUseWindowPadding = 1 << 30,  // Obsoleted in 1.90: Use ImGuiChildFlags_AlwaysUseWindowPadding in BeginChild() call.
+    ImGuiWindowFlags_NavFlattened           = 1 << 31,  // Obsoleted in 1.90.9: Use ImGuiChildFlags_NavFlattened in BeginChild() call.
 #endif
 };

@ -1076,6 +1084,19 @@ enum ImGuiChildFlags_
    ImGuiChildFlags_AutoResizeY             = 1 << 5,   // Enable auto-resizing height. Read "IMPORTANT: Size measurement" details above.
    ImGuiChildFlags_AlwaysAutoResize        = 1 << 6,   // Combined with AutoResizeX/AutoResizeY. Always measure size even when child is hidden, always return true, always disable clipping optimization! NOT RECOMMENDED.
    ImGuiChildFlags_FrameStyle              = 1 << 7,   // Style the child window like a framed item: use FrameBg, FrameRounding, FrameBorderSize, FramePadding instead of ChildBg, ChildRounding, ChildBorderSize, WindowPadding.
+    ImGuiChildFlags_NavFlattened            = 1 << 8,   // Share focus scope, allow gamepad/keyboard navigation to cross over parent border to this child or between sibling child windows.
+};
+
+// Flags for ImGui::PushItemFlag()
+// (Those are shared by all items)
+enum ImGuiItemFlags_
+{
+    ImGuiItemFlags_None                     = 0,        // (Default)
+    ImGuiItemFlags_NoTabStop                = 1 << 0,   // false    // Disable keyboard tabbing. This is a "lighter" version of ImGuiItemFlags_NoNav.
+    ImGuiItemFlags_NoNav                    = 1 << 1,   // false    // Disable any form of focusing (keyboard/gamepad directional navigation and SetKeyboardFocusHere() calls).
+    ImGuiItemFlags_NoNavDefaultFocus        = 1 << 2,   // false    // Disable item being a candidate for default focus (e.g. used by title bar items).
+    ImGuiItemFlags_ButtonRepeat             = 1 << 3,   // false    // Any button-like behavior will have repeat mode enabled (based on io.KeyRepeatDelay and io.KeyRepeatRate values). Note that you can also call IsItemActive() after any button to tell if it is being held.
+    ImGuiItemFlags_AutoClosePopups          = 1 << 4,   // true     // MenuItem()/Selectable() automatically close their parent popup window.
 };

 // Flags for ImGui::InputText()
@ -1175,14 +1196,15 @@ enum ImGuiPopupFlags_
 enum ImGuiSelectableFlags_
 {
    ImGuiSelectableFlags_None               = 0,
-    ImGuiSelectableFlags_DontClosePopups    = 1 << 0,   // Clicking this doesn't close parent popup window
+    ImGuiSelectableFlags_NoAutoClosePopups  = 1 << 0,   // Clicking this doesn't close parent popup window (overrides ImGuiItemFlags_AutoClosePopups)
    ImGuiSelectableFlags_SpanAllColumns     = 1 << 1,   // Frame will span all columns of its container table (text will still fit in current column)
    ImGuiSelectableFlags_AllowDoubleClick   = 1 << 2,   // Generate press events on double clicks too
    ImGuiSelectableFlags_Disabled           = 1 << 3,   // Cannot be selected, display grayed out text
    ImGuiSelectableFlags_AllowOverlap       = 1 << 4,   // (WIP) Hit testing to allow subsequent widgets to overlap this one

 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    ImGuiSelectableFlags_AllowItemOverlap   = ImGuiSelectableFlags_AllowOverlap,  // Renamed in 1.89.7
+    ImGuiSelectableFlags_DontClosePopups    = ImGuiSelectableFlags_NoAutoClosePopups,   // Renamed in 1.91.0
+    ImGuiSelectableFlags_AllowItemOverlap   = ImGuiSelectableFlags_AllowOverlap,        // Renamed in 1.89.7
 #endif
 };

@ -1211,8 +1233,9 @@ enum ImGuiTabBarFlags_
    ImGuiTabBarFlags_NoCloseWithMiddleMouseButton   = 1 << 3,   // Disable behavior of closing tabs (that are submitted with p_open != NULL) with middle mouse button. You may handle this behavior manually on user's side with if (IsItemHovered() && IsMouseClicked(2)) *p_open = false.
    ImGuiTabBarFlags_NoTabListScrollingButtons      = 1 << 4,   // Disable scrolling buttons (apply when fitting policy is ImGuiTabBarFlags_FittingPolicyScroll)
    ImGuiTabBarFlags_NoTooltip                      = 1 << 5,   // Disable tooltips when hovering a tab
-    ImGuiTabBarFlags_FittingPolicyResizeDown        = 1 << 6,   // Resize tabs when they don't fit
-    ImGuiTabBarFlags_FittingPolicyScroll            = 1 << 7,   // Add scroll buttons when tabs don't fit
+    ImGuiTabBarFlags_DrawSelectedOverline           = 1 << 6,   // Draw selected overline markers over selected tab
+    ImGuiTabBarFlags_FittingPolicyResizeDown        = 1 << 7,   // Resize tabs when they don't fit
+    ImGuiTabBarFlags_FittingPolicyScroll            = 1 << 8,   // Add scroll buttons when tabs don't fit
    ImGuiTabBarFlags_FittingPolicyMask_             = ImGuiTabBarFlags_FittingPolicyResizeDown | ImGuiTabBarFlags_FittingPolicyScroll,
    ImGuiTabBarFlags_FittingPolicyDefault_          = ImGuiTabBarFlags_FittingPolicyResizeDown,
 };
@ -1294,12 +1317,18 @@ enum ImGuiDragDropFlags_
    ImGuiDragDropFlags_SourceNoHoldToOpenOthers     = 1 << 2,   // Disable the behavior that allows to open tree nodes and collapsing header by holding over them while dragging a source item.
    ImGuiDragDropFlags_SourceAllowNullID            = 1 << 3,   // Allow items such as Text(), Image() that have no unique identifier to be used as drag source, by manufacturing a temporary identifier based on their window-relative position. This is extremely unusual within the dear imgui ecosystem and so we made it explicit.
    ImGuiDragDropFlags_SourceExtern                 = 1 << 4,   // External source (from outside of dear imgui), won't attempt to read current item/window info. Will always return true. Only one Extern source can be active simultaneously.
-    ImGuiDragDropFlags_SourceAutoExpirePayload      = 1 << 5,   // Automatically expire the payload if the source cease to be submitted (otherwise payloads are persisting while being dragged)
+    ImGuiDragDropFlags_PayloadAutoExpire            = 1 << 5,   // Automatically expire the payload if the source cease to be submitted (otherwise payloads are persisting while being dragged)
+    ImGuiDragDropFlags_PayloadNoCrossContext        = 1 << 6,   // Hint to specify that the payload may not be copied outside current dear imgui context.
+    ImGuiDragDropFlags_PayloadNoCrossProcess        = 1 << 7,   // Hint to specify that the payload may not be copied outside current process.
    // AcceptDragDropPayload() flags
    ImGuiDragDropFlags_AcceptBeforeDelivery         = 1 << 10,  // AcceptDragDropPayload() will returns true even before the mouse button is released. You can then call IsDelivery() to test if the payload needs to be delivered.
    ImGuiDragDropFlags_AcceptNoDrawDefaultRect      = 1 << 11,  // Do not draw the default highlight rectangle when hovering over target.
    ImGuiDragDropFlags_AcceptNoPreviewTooltip       = 1 << 12,  // Request hiding the BeginDragDropSource tooltip from the BeginDragDropTarget site.
    ImGuiDragDropFlags_AcceptPeekOnly               = ImGuiDragDropFlags_AcceptBeforeDelivery | ImGuiDragDropFlags_AcceptNoDrawDefaultRect, // For peeking ahead and inspecting the payload before delivery.
+
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    ImGuiDragDropFlags_SourceAutoExpirePayload = ImGuiDragDropFlags_PayloadAutoExpire, // Renamed in 1.90.9
+#endif
 };

 // Standard Drag and Drop payload types. You can define you own payload types using short strings. Types starting with '_' are defined by Dear ImGui.
@ -1319,6 +1348,7 @@ enum ImGuiDataType_
    ImGuiDataType_U64,      // unsigned long long / unsigned __int64
    ImGuiDataType_Float,    // float
    ImGuiDataType_Double,   // double
+    ImGuiDataType_Bool,     // bool (provided for user convenience, not supported by scalar widgets)
    ImGuiDataType_COUNT
 };

@ -1527,8 +1557,9 @@ enum ImGuiConfigFlags_
    ImGuiConfigFlags_NavEnableGamepad       = 1 << 1,   // Master gamepad navigation enable flag. Backend also needs to set ImGuiBackendFlags_HasGamepad.
    ImGuiConfigFlags_NavEnableSetMousePos   = 1 << 2,   // Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward. Will update io.MousePos and set io.WantSetMousePos=true. If enabled you MUST honor io.WantSetMousePos requests in your backend, otherwise ImGui will react as if the mouse is jumping around back and forth.
    ImGuiConfigFlags_NavNoCaptureKeyboard   = 1 << 3,   // Instruct navigation to not set the io.WantCaptureKeyboard flag when io.NavActive is set.
-    ImGuiConfigFlags_NoMouse                = 1 << 4,   // Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information set by the backend.
+    ImGuiConfigFlags_NoMouse                = 1 << 4,   // Instruct dear imgui to disable mouse inputs and interactions.
    ImGuiConfigFlags_NoMouseCursorChange    = 1 << 5,   // Instruct backend to not alter mouse cursor shape and visibility. Use if the backend cursor changes are interfering with yours and you don't want to use SetMouseCursor() to change mouse cursor. You may want to honor requests from imgui by reading GetMouseCursor() yourself instead.
+    ImGuiConfigFlags_NoKeyboard             = 1 << 6,   // Instruct dear imgui to disable keyboard inputs and interactions. This is done by ignoring keyboard events and clearing existing states.

    // User storage (to allow your backend/engine to communicate to code that may be shared between multiple projects. Those flags are NOT used by core Dear ImGui)
    ImGuiConfigFlags_IsSRGB                 = 1 << 20,  // Application is SRGB-aware.
@ -1581,11 +1612,13 @@ enum ImGuiCol_
    ImGuiCol_ResizeGrip,            // Resize grip in lower-right and lower-left corners of windows.
    ImGuiCol_ResizeGripHovered,
    ImGuiCol_ResizeGripActive,
-    ImGuiCol_Tab,                   // TabItem in a TabBar
-    ImGuiCol_TabHovered,
-    ImGuiCol_TabActive,
-    ImGuiCol_TabUnfocused,
-    ImGuiCol_TabUnfocusedActive,
+    ImGuiCol_TabHovered,            // Tab background, when hovered
+    ImGuiCol_Tab,                   // Tab background, when tab-bar is focused & tab is unselected
+    ImGuiCol_TabSelected,           // Tab background, when tab-bar is focused & tab is selected
+    ImGuiCol_TabSelectedOverline,   // Tab horizontal overline, when tab-bar is focused & tab is selected
+    ImGuiCol_TabDimmed,             // Tab background, when tab-bar is unfocused & tab is unselected
+    ImGuiCol_TabDimmedSelected,     // Tab background, when tab-bar is unfocused & tab is selected
+    ImGuiCol_TabDimmedSelectedOverline,//..horizontal overline, when tab-bar is unfocused & tab is selected
    ImGuiCol_PlotLines,
    ImGuiCol_PlotLinesHovered,
    ImGuiCol_PlotHistogram,
@ -1595,13 +1628,20 @@ enum ImGuiCol_
    ImGuiCol_TableBorderLight,      // Table inner borders (prefer using Alpha=1.0 here)
    ImGuiCol_TableRowBg,            // Table row background (even rows)
    ImGuiCol_TableRowBgAlt,         // Table row background (odd rows)
+    ImGuiCol_TextLink,              // Hyperlink color
    ImGuiCol_TextSelectedBg,
    ImGuiCol_DragDropTarget,        // Rectangle highlighting a drop target
    ImGuiCol_NavHighlight,          // Gamepad/keyboard: current highlighted item
    ImGuiCol_NavWindowingHighlight, // Highlight window when using CTRL+TAB
    ImGuiCol_NavWindowingDimBg,     // Darken/colorize entire screen behind the CTRL+TAB window list, when active
    ImGuiCol_ModalWindowDimBg,      // Darken/colorize entire screen behind a modal window, when one is active
-    ImGuiCol_COUNT
+    ImGuiCol_COUNT,
+
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    ImGuiCol_TabActive = ImGuiCol_TabSelected,                  // [renamed in 1.90.9]
+    ImGuiCol_TabUnfocused = ImGuiCol_TabDimmed,                 // [renamed in 1.90.9]
+    ImGuiCol_TabUnfocusedActive = ImGuiCol_TabDimmedSelected,   // [renamed in 1.90.9]
+#endif
 };

 // Enumeration for PushStyleVar() / PopStyleVar() to temporarily modify the ImGuiStyle structure.
@ -1640,11 +1680,11 @@ enum ImGuiStyleVar_
    ImGuiStyleVar_TabRounding,              // float     TabRounding
    ImGuiStyleVar_TabBorderSize,            // float     TabBorderSize
    ImGuiStyleVar_TabBarBorderSize,         // float     TabBarBorderSize
-    ImGuiStyleVar_TableAngledHeadersAngle,  // float  TableAngledHeadersAngle
-    ImGuiStyleVar_TableAngledHeadersTextAlign,// ImVec2 TableAngledHeadersTextAlign
+    ImGuiStyleVar_TableAngledHeadersAngle,  // float     TableAngledHeadersAngle
+    ImGuiStyleVar_TableAngledHeadersTextAlign,// ImVec2  TableAngledHeadersTextAlign
    ImGuiStyleVar_ButtonTextAlign,          // ImVec2    ButtonTextAlign
    ImGuiStyleVar_SelectableTextAlign,      // ImVec2    SelectableTextAlign
-    ImGuiStyleVar_SeparatorTextBorderSize,  // float  SeparatorTextBorderSize
+    ImGuiStyleVar_SeparatorTextBorderSize,  // float     SeparatorTextBorderSize
    ImGuiStyleVar_SeparatorTextAlign,       // ImVec2    SeparatorTextAlign
    ImGuiStyleVar_SeparatorTextPadding,     // ImVec2    SeparatorTextPadding
    ImGuiStyleVar_COUNT
@ -1713,8 +1753,9 @@ enum ImGuiSliderFlags_
    ImGuiSliderFlags_None                   = 0,
    ImGuiSliderFlags_AlwaysClamp            = 1 << 4,       // Clamp value to min/max bounds when input manually with CTRL+Click. By default CTRL+Click allows going out of bounds.
    ImGuiSliderFlags_Logarithmic            = 1 << 5,       // Make the widget logarithmic (linear otherwise). Consider using ImGuiSliderFlags_NoRoundToFormat with this if using a format-string with small amount of digits.
-    ImGuiSliderFlags_NoRoundToFormat        = 1 << 6,       // Disable rounding underlying value to match precision of the display format string (e.g. %.3f values are rounded to those 3 digits)
-    ImGuiSliderFlags_NoInput                = 1 << 7,       // Disable CTRL+Click or Enter key allowing to input text directly into the widget
+    ImGuiSliderFlags_NoRoundToFormat        = 1 << 6,       // Disable rounding underlying value to match precision of the display format string (e.g. %.3f values are rounded to those 3 digits).
+    ImGuiSliderFlags_NoInput                = 1 << 7,       // Disable CTRL+Click or Enter key allowing to input text directly into the widget.
+    ImGuiSliderFlags_WrapAround             = 1 << 8,       // Enable wrapping around from max to min and from min to max (only supported by DragXXX() functions for now.
    ImGuiSliderFlags_InvalidMask_           = 0x7000000F,   // [Internal] We treat using those bits as being potentially a 'float power' argument from the previous API that has got miscast to this enum, and will trigger an assert if needed.

    // Obsolete names
@ -1937,9 +1978,19 @@ struct ImGuiTableColumnSortSpecs
 };

 //-----------------------------------------------------------------------------
-// [SECTION] Helpers: Memory allocations macros, ImVector<>
+// [SECTION] Helpers: Debug log, memory allocations macros, ImVector<>
 //-----------------------------------------------------------------------------

+//-----------------------------------------------------------------------------
+// Debug Logging into ShowDebugLogWindow(), tty and more.
+//-----------------------------------------------------------------------------
+
+#ifndef IMGUI_DISABLE_DEBUG_TOOLS
+#define IMGUI_DEBUG_LOG(...)        ImGui::DebugLog(__VA_ARGS__)
+#else
+#define IMGUI_DEBUG_LOG(...)        ((void)0)
+#endif
+
 //-----------------------------------------------------------------------------
 // IM_MALLOC(), IM_FREE(), IM_NEW(), IM_PLACEMENT_NEW(), IM_DELETE()
 // We call C++ constructor on own allocated memory via the placement "new(ptr) Type()" syntax.
@ -2182,9 +2233,9 @@ struct ImGuiIO
    // Option to deactivate io.AddFocusEvent(false) handling.
    // - May facilitate interactions with a debugger when focus loss leads to clearing inputs data.
    // - Backends may have other side-effects on focus loss, so this will reduce side-effects but not necessary remove all of them.
-    bool        ConfigDebugIgnoreFocusLoss;     // = false          // Ignore io.AddFocusEvent(false), consequently not calling io.ClearInputKeys() in input processing.
+    bool        ConfigDebugIgnoreFocusLoss;     // = false          // Ignore io.AddFocusEvent(false), consequently not calling io.ClearInputKeys()/io.ClearInputMouse() in input processing.

-    // Options to audit .ini data
+    // Option to audit .ini data
    bool        ConfigDebugIniSettings;         // = false          // Save .ini data with extra comments (particularly helpful for Docking, but makes saving slower)

    //------------------------------------------------------------------
@ -2205,9 +2256,15 @@ struct ImGuiIO
    void        (*SetClipboardTextFn)(void* user_data, const char* text);
    void*       ClipboardUserData;

+    // Optional: Open link/folder/file in OS Shell
+    // (default to use ShellExecuteA() on Windows, system() on Linux/Mac)
+    bool        (*PlatformOpenInShellFn)(ImGuiContext* ctx, const char* path);
+    void*       PlatformOpenInShellUserData;
+
    // Optional: Notify OS Input Method Editor of the screen position of your cursor for text input position (e.g. when using Japanese/Chinese IME on Windows)
    // (default to use native imm32 api on Windows)
-    void        (*SetPlatformImeDataFn)(ImGuiViewport* viewport, ImGuiPlatformImeData* data);
+    void        (*PlatformSetImeDataFn)(ImGuiContext* ctx, ImGuiViewport* viewport, ImGuiPlatformImeData* data);
+    //void      (*SetPlatformImeDataFn)(ImGuiViewport* viewport, ImGuiPlatformImeData* data); // [Renamed to io.PlatformSetImeDataFn in 1.91.0]

    // Optional: Platform locale
    ImWchar     PlatformLocaleDecimalPoint;     // '.'              // [Experimental] Configure decimal point e.g. '.' or ',' useful for some languages (e.g. German), generally pulled from *localeconv()->decimal_point
@ -2231,7 +2288,8 @@ struct ImGuiIO
    IMGUI_API void  SetKeyEventNativeData(ImGuiKey key, int native_keycode, int native_scancode, int native_legacy_index = -1); // [Optional] Specify index for legacy <1.87 IsKeyXXX() functions with native indices + specify native keycode, scancode.
    IMGUI_API void  SetAppAcceptingEvents(bool accepting_events);           // Set master flag for accepting key/mouse/text events (default to true). Useful if you have native dialog boxes that are interrupting your application loop/refresh, and you want to disable events being queued while your app is frozen.
    IMGUI_API void  ClearEventsQueue();                                     // Clear all incoming events.
-    IMGUI_API void  ClearInputKeys();                                       // Clear current keyboard/mouse/gamepad state + current frame text input buffer. Equivalent to releasing all keys/buttons.
+    IMGUI_API void  ClearInputKeys();                                       // Clear current keyboard/gamepad state + current frame text input buffer. Equivalent to releasing all keys/buttons.
+    IMGUI_API void  ClearInputMouse();                                      // Clear current mouse state.
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    IMGUI_API void  ClearInputCharacters();                                 // [Obsoleted in 1.89.8] Clear the current frame text input buffer. Now included within ClearInputKeys().
 #endif
@ -2460,6 +2518,16 @@ struct ImGuiTextBuffer
    IMGUI_API void      appendfv(const char* fmt, va_list args) IM_FMTLIST(2);
 };

+// [Internal] Key+Value for ImGuiStorage
+struct ImGuiStoragePair
+{
+    ImGuiID     key;
+    union       { int val_i; float val_f; void* val_p; };
+    ImGuiStoragePair(ImGuiID _key, int _val)    { key = _key; val_i = _val; }
+    ImGuiStoragePair(ImGuiID _key, float _val)  { key = _key; val_f = _val; }
+    ImGuiStoragePair(ImGuiID _key, void* _val)  { key = _key; val_p = _val; }
+};
+
 // Helper: Key->Value storage
 // Typically you don't have to worry about this since a storage is held within each Window.
 // We use it to e.g. store collapse state for a tree (Int 0/1)
@ -2471,15 +2539,6 @@ struct ImGuiTextBuffer
 struct ImGuiStorage
 {
    // [Internal]
-    struct ImGuiStoragePair
-    {
-        ImGuiID key;
-        union { int val_i; float val_f; void* val_p; };
-        ImGuiStoragePair(ImGuiID _key, int _val)    { key = _key; val_i = _val; }
-        ImGuiStoragePair(ImGuiID _key, float _val)  { key = _key; val_f = _val; }
-        ImGuiStoragePair(ImGuiID _key, void* _val)  { key = _key; val_p = _val; }
-    };
-
    ImVector<ImGuiStoragePair>      Data;

    // - Get***() functions find pair, never add/allocate. Pairs are sorted so a query is O(log N)
@ -2508,6 +2567,10 @@ struct ImGuiStorage
    IMGUI_API void      BuildSortByKey();
    // Obsolete: use on your own storage if you know only integer are being stored (open/close all tree nodes)
    IMGUI_API void      SetAllInt(int val);
+
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    //typedef ::ImGuiStoragePair ImGuiStoragePair;  // 1.90.8: moved type outside struct
+#endif
 };

 // Helper: Manually clip large list of items.
@ -2538,9 +2601,10 @@ struct ImGuiListClipper
    int             ItemsCount;         // [Internal] Number of items
    float           ItemsHeight;        // [Internal] Height of item after a first step and item submission can calculate it
    float           StartPosY;          // [Internal] Cursor position at the time of Begin() or after table frozen rows are all processed
+    double          StartSeekOffsetY;   // [Internal] Account for frozen rows in a table and initial loss of precision in very large windows.
    void*           TempData;           // [Internal] Internal data

-    // items_count: Use INT_MAX if you don't know how many items you have (in which case the cursor won't be advanced in the final step)
+    // items_count: Use INT_MAX if you don't know how many items you have (in which case the cursor won't be advanced in the final step, and you can call SeekCursorForItem() manually if you need)
    // items_height: Use -1.0f to be calculated automatically on first step. Otherwise pass in the distance between your items, typically GetTextLineHeightWithSpacing() or GetFrameHeightWithSpacing().
    IMGUI_API ImGuiListClipper();
    IMGUI_API ~ImGuiListClipper();
@ -2553,6 +2617,11 @@ struct ImGuiListClipper
    inline void     IncludeItemByIndex(int item_index)                  { IncludeItemsByIndex(item_index, item_index + 1); }
    IMGUI_API void  IncludeItemsByIndex(int item_begin, int item_end);  // item_end is exclusive e.g. use (42, 42+1) to make item 42 never clipped.

+    // Seek cursor toward given item. This is automatically called while stepping.
+    // - The only reason to call this is: you can use ImGuiListClipper::Begin(INT_MAX) if you don't know item count ahead of time.
+    // - In this case, after all steps are done, you'll want to call SeekCursorForItem(item_count).
+    IMGUI_API void  SeekCursorForItem(int item_index);
+
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    inline void IncludeRangeByIndices(int item_begin, int item_end)      { IncludeItemsByIndex(item_begin, item_end); } // [renamed in 1.89.9]
    inline void ForceDisplayRangeByIndices(int item_begin, int item_end) { IncludeItemsByIndex(item_begin, item_end); } // [renamed in 1.89.6]
@ -3156,7 +3225,7 @@ struct ImFont
    float                       EllipsisCharStep;   // 4     // out               // Step between characters when EllipsisCount > 0
    bool                        DirtyLookupTables;  // 1     // out //
    float                       Scale;              // 4     // in  // = 1.f      // Base font scale, multiplied by the per-window font scale which you can adjust with SetWindowFontScale()
-    float                       Ascent, Descent;    // 4+4   // out //            // Ascent: distance from top to bottom of e.g. 'A' [0..FontSize]
+    float                       Ascent, Descent;    // 4+4   // out //            // Ascent: distance from top to bottom of e.g. 'A' [0..FontSize] (unscaled)
    int                         MetricsTotalSurface;// 4     // out //            // Total surface in pixels to get an idea of the font rasterization/texture cost (not exact, we approximate the cost of padding between glyphs)
    ImU8                        Used4kPagesMap[(IM_UNICODE_CODEPOINT_MAX+1)/4096/8]; // 2 bytes if ImWchar=ImWchar16, 34 bytes if ImWchar==ImWchar32. Store 1-bit for each block of 4K codepoints that has one active glyph. This is mainly used to facilitate iterations across all used codepoints.

@ -3216,6 +3285,7 @@ struct ImGuiViewport
    ImVec2              WorkSize;               // Work Area: Size of the viewport minus task bars, menu bars, status bars (<= Size)

    // Platform/Backend Dependent Data
+    void*               PlatformHandle;         // void* to hold higher-level, platform window handle (e.g. HWND, GLFWWindow*, SDL_Window*)
    void*               PlatformHandleRaw;      // void* to hold lower-level, platform-native window handle (under Win32 this is expected to be a HWND, unused for other platforms)

    ImGuiViewport()     { memset(this, 0, sizeof(*this)); }
@ -3229,7 +3299,7 @@ struct ImGuiViewport
 // [SECTION] Platform Dependent Interfaces
 //-----------------------------------------------------------------------------

-// (Optional) Support for IME (Input Method Editor) via the io.SetPlatformImeDataFn() function.
+// (Optional) Support for IME (Input Method Editor) via the io.PlatformSetImeDataFn() function.
 struct ImGuiPlatformImeData
 {
    bool    WantVisible;        // A widget wants the IME to be visible
@ -3248,29 +3318,34 @@ struct ImGuiPlatformImeData
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
 namespace ImGui
 {
+    // OBSOLETED in 1.91.0 (from July 2024)
+    static inline void  PushButtonRepeat(bool repeat)                           { PushItemFlag(ImGuiItemFlags_ButtonRepeat, repeat); }
+    static inline void  PopButtonRepeat()                                       { PopItemFlag(); }
+    static inline void  PushTabStop(bool tab_stop)                              { PushItemFlag(ImGuiItemFlags_NoTabStop, !tab_stop); }
+    static inline void  PopTabStop()                                            { PopItemFlag(); }
    // OBSOLETED in 1.90.0 (from September 2023)
-    static inline bool  BeginChildFrame(ImGuiID id, const ImVec2& size, ImGuiWindowFlags window_flags = 0)                 { return BeginChild(id, size, ImGuiChildFlags_FrameStyle, window_flags); }
-    static inline void  EndChildFrame()                                                                                    { EndChild(); }
+    static inline bool  BeginChildFrame(ImGuiID id, const ImVec2& size, ImGuiWindowFlags window_flags = 0)  { return BeginChild(id, size, ImGuiChildFlags_FrameStyle, window_flags); }
+    static inline void  EndChildFrame()                                                                     { EndChild(); }
    //static inline bool BeginChild(const char* str_id, const ImVec2& size_arg, bool border, ImGuiWindowFlags window_flags){ return BeginChild(str_id, size_arg, border ? ImGuiChildFlags_Border : ImGuiChildFlags_None, window_flags); } // Unnecessary as true == ImGuiChildFlags_Border
    //static inline bool BeginChild(ImGuiID id, const ImVec2& size_arg, bool border, ImGuiWindowFlags window_flags)        { return BeginChild(id, size_arg, border ? ImGuiChildFlags_Border : ImGuiChildFlags_None, window_flags);     } // Unnecessary as true == ImGuiChildFlags_Border
-    static inline void  ShowStackToolWindow(bool* p_open = NULL)                            { ShowIDStackToolWindow(p_open); }
-    IMGUI_API bool      ListBox(const char* label, int* current_item, bool (*old_callback)(void* user_data, int idx, const char** out_text), void* user_data, int items_count, int height_in_items = -1);
+    static inline void  ShowStackToolWindow(bool* p_open = NULL)                { ShowIDStackToolWindow(p_open); }
    IMGUI_API bool      Combo(const char* label, int* current_item, bool (*old_callback)(void* user_data, int idx, const char** out_text), void* user_data, int items_count, int popup_max_height_in_items = -1);
+    IMGUI_API bool      ListBox(const char* label, int* current_item, bool (*old_callback)(void* user_data, int idx, const char** out_text), void* user_data, int items_count, int height_in_items = -1);
    // OBSOLETED in 1.89.7 (from June 2023)
-    IMGUI_API void      SetItemAllowOverlap();                                              // Use SetNextItemAllowOverlap() before item.
+    IMGUI_API void      SetItemAllowOverlap();                                  // Use SetNextItemAllowOverlap() before item.
    // OBSOLETED in 1.89.4 (from March 2023)
-    static inline void  PushAllowKeyboardFocus(bool tab_stop)                               { PushTabStop(tab_stop); }
-    static inline void  PopAllowKeyboardFocus()                                             { PopTabStop(); }
+    static inline void  PushAllowKeyboardFocus(bool tab_stop)                   { PushItemFlag(ImGuiItemFlags_NoTabStop, !tab_stop); }
+    static inline void  PopAllowKeyboardFocus()                                 { PopItemFlag(); }
    // OBSOLETED in 1.89 (from August 2022)
    IMGUI_API bool      ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0 = ImVec2(0, 0), const ImVec2& uv1 = ImVec2(1, 1), int frame_padding = -1, const ImVec4& bg_col = ImVec4(0, 0, 0, 0), const ImVec4& tint_col = ImVec4(1, 1, 1, 1)); // Use new ImageButton() signature (explicit item id, regular FramePadding)
    // OBSOLETED in 1.87 (from February 2022 but more formally obsoleted April 2024)
-    IMGUI_API ImGuiKey  GetKeyIndex(ImGuiKey key);                                          // Map ImGuiKey_* values into legacy native key index. == io.KeyMap[key]. When using a 1.87+ backend using io.AddKeyEvent(), calling GetKeyIndex() with ANY ImGuiKey_XXXX values will return the same value!
-    //static inline ImGuiKey GetKeyIndex(ImGuiKey key)                                      { IM_ASSERT(key >= ImGuiKey_NamedKey_BEGIN && key < ImGuiKey_NamedKey_END); return key; }
+    IMGUI_API ImGuiKey  GetKeyIndex(ImGuiKey key);                              // Map ImGuiKey_* values into legacy native key index. == io.KeyMap[key]. When using a 1.87+ backend using io.AddKeyEvent(), calling GetKeyIndex() with ANY ImGuiKey_XXXX values will return the same value!
+    //static inline ImGuiKey GetKeyIndex(ImGuiKey key)                          { IM_ASSERT(key >= ImGuiKey_NamedKey_BEGIN && key < ImGuiKey_NamedKey_END); return key; }

    // Some of the older obsolete names along with their replacement (commented out so they are not reported in IDE)
    //-- OBSOLETED in 1.88 (from May 2022)
-    //static inline void  CaptureKeyboardFromApp(bool want_capture_keyboard = true)         { SetNextFrameWantCaptureKeyboard(want_capture_keyboard); } // Renamed as name was misleading + removed default value.
-    //static inline void  CaptureMouseFromApp(bool want_capture_mouse = true)               { SetNextFrameWantCaptureMouse(want_capture_mouse); }       // Renamed as name was misleading + removed default value.
+    //static inline void  CaptureKeyboardFromApp(bool want_capture_keyboard = true)     { SetNextFrameWantCaptureKeyboard(want_capture_keyboard); } // Renamed as name was misleading + removed default value.
+    //static inline void  CaptureMouseFromApp(bool want_capture_mouse = true)           { SetNextFrameWantCaptureMouse(want_capture_mouse); }       // Renamed as name was misleading + removed default value.
    //-- OBSOLETED in 1.86 (from November 2021)
    //IMGUI_API void      CalcListClipping(int items_count, float items_height, int* out_items_display_start, int* out_items_display_end); // Code removed, see 1.90 for last version of the code. Calculate range of visible items for large list of evenly sized items. Prefer using ImGuiListClipper.
    //-- OBSOLETED in 1.85 (from August 2021)
@ -3343,8 +3418,8 @@ namespace ImGui

 // RENAMED and MERGED both ImGuiKey_ModXXX and ImGuiModFlags_XXX into ImGuiMod_XXX (from September 2022)
 // RENAMED ImGuiKeyModFlags -> ImGuiModFlags in 1.88 (from April 2022). Exceptionally commented out ahead of obscolescence schedule to reduce confusion and because they were not meant to be used in the first place.
-typedef ImGuiKeyChord ImGuiModFlags;      // == int. We generally use ImGuiKeyChord to mean "a ImGuiKey or-ed with any number of ImGuiMod_XXX value", but you may store only mods in there.
-enum ImGuiModFlags_ { ImGuiModFlags_None = 0, ImGuiModFlags_Ctrl = ImGuiMod_Ctrl, ImGuiModFlags_Shift = ImGuiMod_Shift, ImGuiModFlags_Alt = ImGuiMod_Alt, ImGuiModFlags_Super = ImGuiMod_Super };
+//typedef ImGuiKeyChord ImGuiModFlags;      // == int. We generally use ImGuiKeyChord to mean "a ImGuiKey or-ed with any number of ImGuiMod_XXX value", so you may store mods in there.
+//enum ImGuiModFlags_ { ImGuiModFlags_None = 0, ImGuiModFlags_Ctrl = ImGuiMod_Ctrl, ImGuiModFlags_Shift = ImGuiMod_Shift, ImGuiModFlags_Alt = ImGuiMod_Alt, ImGuiModFlags_Super = ImGuiMod_Super };
 //typedef ImGuiKeyChord ImGuiKeyModFlags; // == int
 //enum ImGuiKeyModFlags_ { ImGuiKeyModFlags_None = 0, ImGuiKeyModFlags_Ctrl = ImGuiMod_Ctrl, ImGuiKeyModFlags_Shift = ImGuiMod_Shift, ImGuiKeyModFlags_Alt = ImGuiMod_Alt, ImGuiKeyModFlags_Super = ImGuiMod_Super };

--- a/external/imgui/imgui/imgui_demo.cpp
+++ b/external/imgui/imgui/imgui_demo.cpp
@ -1,4 +1,4 @@
-// dear imgui, v1.90.8
+// dear imgui, v1.91.0 WIP
 // (demo code)

 // Help:
@ -83,6 +83,7 @@ Index of this file:
 // [SECTION] Example App: Debug Console / ShowExampleAppConsole()
 // [SECTION] Example App: Debug Log / ShowExampleAppLog()
 // [SECTION] Example App: Simple Layout / ShowExampleAppLayout()
+// [SECTION] Helpers: ExampleTreeNode, ExampleMemberInfo (for use by Property Editor etc.)
 // [SECTION] Example App: Property Editor / ShowExampleAppPropertyEditor()
 // [SECTION] Example App: Long Text / ShowExampleAppLongText()
 // [SECTION] Example App: Auto Resize / ShowExampleAppAutoResize()
@ -439,7 +440,9 @@ void ImGui::ShowDemoWindow(bool* p_open)
        ImGui::BulletText("See the ShowDemoWindow() code in imgui_demo.cpp. <- you are here!");
        ImGui::BulletText("See comments in imgui.cpp.");
        ImGui::BulletText("See example applications in the examples/ folder.");
-        ImGui::BulletText("Read the FAQ at https://www.dearimgui.com/faq/");
+        ImGui::BulletText("Read the FAQ at ");
+        ImGui::SameLine(0, 0);
+        ImGui::TextLinkOpenURL("https://www.dearimgui.com/faq/");
        ImGui::BulletText("Set 'io.ConfigFlags |= NavEnableKeyboard' for keyboard controls.");
        ImGui::BulletText("Set 'io.ConfigFlags |= NavEnableGamepad' for gamepad controls.");

@ -462,19 +465,26 @@ void ImGui::ShowDemoWindow(bool* p_open)
            ImGui::CheckboxFlags("io.ConfigFlags: NavEnableSetMousePos", &io.ConfigFlags, ImGuiConfigFlags_NavEnableSetMousePos);
            ImGui::SameLine(); HelpMarker("Instruct navigation to move the mouse cursor. See comment for ImGuiConfigFlags_NavEnableSetMousePos.");
            ImGui::CheckboxFlags("io.ConfigFlags: NoMouse",              &io.ConfigFlags, ImGuiConfigFlags_NoMouse);
+            ImGui::SameLine(); HelpMarker("Instruct dear imgui to disable mouse inputs and interactions.");
+
+            // The "NoMouse" option can get us stuck with a disabled mouse! Let's provide an alternative way to fix it:
            if (io.ConfigFlags & ImGuiConfigFlags_NoMouse)
            {
-                // The "NoMouse" option can get us stuck with a disabled mouse! Let's provide an alternative way to fix it:
                if (fmodf((float)ImGui::GetTime(), 0.40f) < 0.20f)
                {
                    ImGui::SameLine();
                    ImGui::Text("<<PRESS SPACE TO DISABLE>>");
                }
-                if (ImGui::IsKeyPressed(ImGuiKey_Space))
+                // Prevent both being checked
+                if (ImGui::IsKeyPressed(ImGuiKey_Space) || (io.ConfigFlags & ImGuiConfigFlags_NoKeyboard))
                    io.ConfigFlags &= ~ImGuiConfigFlags_NoMouse;
            }
-            ImGui::CheckboxFlags("io.ConfigFlags: NoMouseCursorChange", &io.ConfigFlags, ImGuiConfigFlags_NoMouseCursorChange);
+
+            ImGui::CheckboxFlags("io.ConfigFlags: NoMouseCursorChange",  &io.ConfigFlags, ImGuiConfigFlags_NoMouseCursorChange);
            ImGui::SameLine(); HelpMarker("Instruct backend to not alter mouse cursor shape and visibility.");
+            ImGui::CheckboxFlags("io.ConfigFlags: NoKeyboard", &io.ConfigFlags, ImGuiConfigFlags_NoKeyboard);
+            ImGui::SameLine(); HelpMarker("Instruct dear imgui to disable keyboard inputs and interactions.");
+
            ImGui::Checkbox("io.ConfigInputTrickleEventQueue", &io.ConfigInputTrickleEventQueue);
            ImGui::SameLine(); HelpMarker("Enable input queue trickling: some types of events submitted during the same frame (e.g. button down + up) will be spread over multiple frames, improving interactions with low framerates.");
            ImGui::Checkbox("io.MouseDrawCursor", &io.MouseDrawCursor);
@ -533,8 +543,9 @@ void ImGui::ShowDemoWindow(bool* p_open)
        IMGUI_DEMO_MARKER("Configuration/Style");
        if (ImGui::TreeNode("Style"))
        {
+            ImGui::Checkbox("Style Editor", &show_tool_style_editor);
+            ImGui::SameLine();
            HelpMarker("The same contents can be accessed in 'Tools->Style Editor' or by calling the ShowStyleEditor() function.");
-            ImGui::ShowStyleEditor();
            ImGui::TreePop();
            ImGui::Spacing();
        }
@ -652,11 +663,11 @@ static void ShowDemoWindowWidgets()
        IMGUI_DEMO_MARKER("Widgets/Basic/Buttons (Repeating)");
        static int counter = 0;
        float spacing = ImGui::GetStyle().ItemInnerSpacing.x;
-        ImGui::PushButtonRepeat(true);
+        ImGui::PushItemFlag(ImGuiItemFlags_ButtonRepeat, true);
        if (ImGui::ArrowButton("##left", ImGuiDir_Left)) { counter--; }
        ImGui::SameLine(0.0f, spacing);
        if (ImGui::ArrowButton("##right", ImGuiDir_Right)) { counter++; }
-        ImGui::PopButtonRepeat();
+        ImGui::PopItemFlag();
        ImGui::SameLine();
        ImGui::Text("%d", counter);

@ -713,18 +724,19 @@ static void ShowDemoWindowWidgets()

        {
            IMGUI_DEMO_MARKER("Widgets/Basic/DragInt, DragFloat");
-            static int i1 = 50, i2 = 42;
+            static int i1 = 50, i2 = 42, i3 = 128;
            ImGui::DragInt("drag int", &i1, 1);
            ImGui::SameLine(); HelpMarker(
                "Click and drag to edit value.\n"
                "Hold SHIFT/ALT for faster/slower edit.\n"
                "Double-click or CTRL+click to input value.");
-
            ImGui::DragInt("drag int 0..100", &i2, 1, 0, 100, "%d%%", ImGuiSliderFlags_AlwaysClamp);
+            ImGui::DragInt("drag int wrap 100..200", &i3, 1, 100, 200, "%d", ImGuiSliderFlags_WrapAround);

            static float f1 = 1.00f, f2 = 0.0067f;
            ImGui::DragFloat("drag float", &f1, 0.005f);
            ImGui::DragFloat("drag small float", &f2, 0.0001f, 0.0f, 0.0f, "%.06f ns");
+            //ImGui::DragFloat("drag wrap -1..1", &f3, 0.005f, -1.0f, 1.0f, NULL, ImGuiSliderFlags_WrapAround);
        }

        ImGui::SeparatorText("Sliders");
@ -881,12 +893,11 @@ static void ShowDemoWindowWidgets()

        // Using ImGuiHoveredFlags_ForTooltip will pull flags from 'style.HoverFlagsForTooltipMouse' or 'style.HoverFlagsForTooltipNav',
        // which default value include the ImGuiHoveredFlags_AllowWhenDisabled flag.
-        // As a result, Set
        ImGui::BeginDisabled();
        ImGui::Button("Disabled item", sz);
-        ImGui::EndDisabled();
        if (ImGui::IsItemHovered(ImGuiHoveredFlags_ForTooltip))
            ImGui::SetTooltip("I am a a tooltip for a disabled item.");
+        ImGui::EndDisabled();

        ImGui::TreePop();
    }
@ -943,6 +954,7 @@ static void ShowDemoWindowWidgets()
            ImGui::CheckboxFlags("ImGuiTreeNodeFlags_SpanAllColumns",    &base_flags, ImGuiTreeNodeFlags_SpanAllColumns); ImGui::SameLine(); HelpMarker("For use in Tables only.");
            ImGui::CheckboxFlags("ImGuiTreeNodeFlags_AllowOverlap",      &base_flags, ImGuiTreeNodeFlags_AllowOverlap);
            ImGui::CheckboxFlags("ImGuiTreeNodeFlags_Framed",            &base_flags, ImGuiTreeNodeFlags_Framed); ImGui::SameLine(); HelpMarker("Draw frame with background (e.g. for CollapsingHeader)");
+            ImGui::CheckboxFlags("ImGuiTreeNodeFlags_NavLeftJumpsBackHere", &base_flags, ImGuiTreeNodeFlags_NavLeftJumpsBackHere);
            ImGui::Checkbox("Align label with current X position", &align_label_with_current_x_position);
            ImGui::Checkbox("Test tree node as drag source", &test_drag_and_drop);
            ImGui::Text("Hello!");
@ -975,7 +987,7 @@ static void ShowDemoWindowWidgets()
                        ImGui::Text("This is a drag and drop source");
                        ImGui::EndDragDropSource();
                    }
-                    if (i == 2)
+                    if (i == 2 && (base_flags & ImGuiTreeNodeFlags_SpanTextWidth))
                    {
                        // Item 2 has an additional inline button to help demonstrate SpanTextWidth.
                        ImGui::SameLine();
@ -984,6 +996,8 @@ static void ShowDemoWindowWidgets()
                    if (node_open)
                    {
                        ImGui::BulletText("Blah blah\nBlah Blah");
+                        ImGui::SameLine();
+                        ImGui::SmallButton("Button");
                        ImGui::TreePop();
                    }
                }
@ -1730,6 +1744,7 @@ static void ShowDemoWindowWidgets()
            ImGui::CheckboxFlags("ImGuiTabBarFlags_AutoSelectNewTabs", &tab_bar_flags, ImGuiTabBarFlags_AutoSelectNewTabs);
            ImGui::CheckboxFlags("ImGuiTabBarFlags_TabListPopupButton", &tab_bar_flags, ImGuiTabBarFlags_TabListPopupButton);
            ImGui::CheckboxFlags("ImGuiTabBarFlags_NoCloseWithMiddleMouseButton", &tab_bar_flags, ImGuiTabBarFlags_NoCloseWithMiddleMouseButton);
+            ImGui::CheckboxFlags("ImGuiTabBarFlags_DrawSelectedOverline", &tab_bar_flags, ImGuiTabBarFlags_DrawSelectedOverline);
            if ((tab_bar_flags & ImGuiTabBarFlags_FittingPolicyMask_) == 0)
                tab_bar_flags |= ImGuiTabBarFlags_FittingPolicyDefault_;
            if (ImGui::CheckboxFlags("ImGuiTabBarFlags_FittingPolicyResizeDown", &tab_bar_flags, ImGuiTabBarFlags_FittingPolicyResizeDown))
@ -1738,11 +1753,13 @@ static void ShowDemoWindowWidgets()
                tab_bar_flags &= ~(ImGuiTabBarFlags_FittingPolicyMask_ ^ ImGuiTabBarFlags_FittingPolicyScroll);

            // Tab Bar
+            ImGui::AlignTextToFramePadding();
+            ImGui::Text("Opened:");
            const char* names[4] = { "Artichoke", "Beetroot", "Celery", "Daikon" };
            static bool opened[4] = { true, true, true, true }; // Persistent user state
            for (int n = 0; n < IM_ARRAYSIZE(opened); n++)
            {
-                if (n > 0) { ImGui::SameLine(); }
+                ImGui::SameLine();
                ImGui::Checkbox(names[n], &opened[n]);
            }

@ -2135,6 +2152,8 @@ static void ShowDemoWindowWidgets()
        ImGui::SameLine(); HelpMarker("Disable rounding underlying value to match precision of the format string (e.g. %.3f values are rounded to those 3 digits).");
        ImGui::CheckboxFlags("ImGuiSliderFlags_NoInput", &flags, ImGuiSliderFlags_NoInput);
        ImGui::SameLine(); HelpMarker("Disable CTRL+Click or Enter key allowing to input text directly into the widget.");
+        ImGui::CheckboxFlags("ImGuiSliderFlags_WrapAround", &flags, ImGuiSliderFlags_WrapAround);
+        ImGui::SameLine(); HelpMarker("Enable wrapping around from max to min and from min to max (only supported by DragXXX() functions)");

        // Drags
        static float drag_f = 0.5f;
@ -2149,9 +2168,10 @@ static void ShowDemoWindowWidgets()
        // Sliders
        static float slider_f = 0.5f;
        static int slider_i = 50;
+        const ImGuiSliderFlags flags_for_sliders = flags & ~ImGuiSliderFlags_WrapAround;
        ImGui::Text("Underlying float value: %f", slider_f);
-        ImGui::SliderFloat("SliderFloat (0 -> 1)", &slider_f, 0.0f, 1.0f, "%.3f", flags);
-        ImGui::SliderInt("SliderInt (0 -> 100)", &slider_i, 0, 100, "%d", flags);
+        ImGui::SliderFloat("SliderFloat (0 -> 1)", &slider_f, 0.0f, 1.0f, "%.3f", flags_for_sliders);
+        ImGui::SliderInt("SliderInt (0 -> 100)", &slider_i, 0, 100, "%d", flags_for_sliders);

        ImGui::TreePop();
    }
@ -2562,7 +2582,7 @@ static void ShowDemoWindowWidgets()
            ImGui::BeginDisabled(true);
        if (item_type == 0) { ImGui::Text("ITEM: Text"); }                                              // Testing text items with no identifier/interaction
        if (item_type == 1) { ret = ImGui::Button("ITEM: Button"); }                                    // Testing button
-        if (item_type == 2) { ImGui::PushButtonRepeat(true); ret = ImGui::Button("ITEM: Button"); ImGui::PopButtonRepeat(); } // Testing button (with repeater)
+        if (item_type == 2) { ImGui::PushItemFlag(ImGuiItemFlags_ButtonRepeat, true); ret = ImGui::Button("ITEM: Button"); ImGui::PopItemFlag(); } // Testing button (with repeater)
        if (item_type == 3) { ret = ImGui::Checkbox("ITEM: Checkbox", &b); }                            // Testing checkbox
        if (item_type == 4) { ret = ImGui::SliderFloat("ITEM: SliderFloat", &col4f[0], 0.0f, 1.0f); }   // Testing basic item
        if (item_type == 5) { ret = ImGui::InputText("ITEM: InputText", &str[0], IM_ARRAYSIZE(str)); }  // Testing input text (which handles tabbing)
@ -4202,7 +4222,7 @@ static void ShowDemoWindowTables()
        PushStyleCompact();
        ImGui::CheckboxFlags("ImGuiTableFlags_RowBg", &flags, ImGuiTableFlags_RowBg);
        ImGui::CheckboxFlags("ImGuiTableFlags_Borders", &flags, ImGuiTableFlags_Borders);
-        ImGui::SameLine(); HelpMarker("ImGuiTableFlags_Borders\n = ImGuiTableFlags_BordersInnerV\n | ImGuiTableFlags_BordersOuterV\n | ImGuiTableFlags_BordersInnerV\n | ImGuiTableFlags_BordersOuterH");
+        ImGui::SameLine(); HelpMarker("ImGuiTableFlags_Borders\n = ImGuiTableFlags_BordersInnerV\n | ImGuiTableFlags_BordersOuterV\n | ImGuiTableFlags_BordersInnerH\n | ImGuiTableFlags_BordersOuterH");
        ImGui::Indent();

        ImGui::CheckboxFlags("ImGuiTableFlags_BordersH", &flags, ImGuiTableFlags_BordersH);
@ -5856,7 +5876,6 @@ static void ShowDemoWindowTables()

            // Show data
            // FIXME-TABLE FIXME-NAV: How we can get decent up/down even though we have the buttons here?
-            ImGui::PushButtonRepeat(true);
 #if 1
            // Demonstrate using clipper for large vertical lists
            ImGuiListClipper clipper;
@ -5941,7 +5960,6 @@ static void ShowDemoWindowTables()
                    ImGui::PopID();
                }
            }
-            ImGui::PopButtonRepeat();

            // Store some info to display debug details below
            table_scroll_cur = ImVec2(ImGui::GetScrollX(), ImGui::GetScrollY());
@ -6404,10 +6422,10 @@ static void ShowDemoWindowInputs()
            ImGui::InputText("1", buf, IM_ARRAYSIZE(buf));
            ImGui::InputText("2", buf, IM_ARRAYSIZE(buf));
            ImGui::InputText("3", buf, IM_ARRAYSIZE(buf));
-            ImGui::PushTabStop(false);
+            ImGui::PushItemFlag(ImGuiItemFlags_NoTabStop, true);
            ImGui::InputText("4 (tab skip)", buf, IM_ARRAYSIZE(buf));
            ImGui::SameLine(); HelpMarker("Item won't be cycled through when using TAB or Shift+Tab.");
-            ImGui::PopTabStop();
+            ImGui::PopItemFlag();
            ImGui::InputText("5", buf, IM_ARRAYSIZE(buf));
            ImGui::TreePop();
        }
@ -6429,12 +6447,12 @@ static void ShowDemoWindowInputs()
            ImGui::InputText("2", buf, IM_ARRAYSIZE(buf));
            if (ImGui::IsItemActive()) has_focus = 2;

-            ImGui::PushTabStop(false);
+            ImGui::PushItemFlag(ImGuiItemFlags_NoTabStop, true);
            if (focus_3) ImGui::SetKeyboardFocusHere();
            ImGui::InputText("3 (tab skip)", buf, IM_ARRAYSIZE(buf));
            if (ImGui::IsItemActive()) has_focus = 3;
            ImGui::SameLine(); HelpMarker("Item won't be cycled through when using TAB or Shift+Tab.");
-            ImGui::PopTabStop();
+            ImGui::PopItemFlag();

            if (has_focus)
                ImGui::Text("Item with focus: %d", has_focus);
@ -6499,6 +6517,17 @@ void ImGui::ShowAboutWindow(bool* p_open)
    }
    IMGUI_DEMO_MARKER("Tools/About Dear ImGui");
    ImGui::Text("Dear ImGui %s (%d)", IMGUI_VERSION, IMGUI_VERSION_NUM);
+
+    ImGui::TextLinkOpenURL("Homepage", "https://github.com/ocornut/imgui");
+    ImGui::SameLine();
+    ImGui::TextLinkOpenURL("FAQ", "https://github.com/ocornut/imgui/blob/master/docs/FAQ.md");
+    ImGui::SameLine();
+    ImGui::TextLinkOpenURL("Wiki", "https://github.com/ocornut/imgui/wiki");
+    ImGui::SameLine();
+    ImGui::TextLinkOpenURL("Releases", "https://github.com/ocornut/imgui/releases");
+    ImGui::SameLine();
+    ImGui::TextLinkOpenURL("Funding", "https://github.com/ocornut/imgui/wiki/Funding");
+
    ImGui::Separator();
    ImGui::Text("By Omar Cornut and all Dear ImGui contributors.");
    ImGui::Text("Dear ImGui is licensed under the MIT License, see LICENSE for more information.");
@ -6841,7 +6870,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
                "Right-click to open edit options menu.");

            ImGui::SetNextWindowSizeConstraints(ImVec2(0.0f, ImGui::GetTextLineHeightWithSpacing() * 10), ImVec2(FLT_MAX, FLT_MAX));
-            ImGui::BeginChild("##colors", ImVec2(0, 0), ImGuiChildFlags_Border, ImGuiWindowFlags_AlwaysVerticalScrollbar | ImGuiWindowFlags_AlwaysHorizontalScrollbar | ImGuiWindowFlags_NavFlattened);
+            ImGui::BeginChild("##colors", ImVec2(0, 0), ImGuiChildFlags_Border | ImGuiChildFlags_NavFlattened, ImGuiWindowFlags_AlwaysVerticalScrollbar | ImGuiWindowFlags_AlwaysHorizontalScrollbar);
            ImGui::PushItemWidth(ImGui::GetFontSize() * -12);
            for (int i = 0; i < ImGuiCol_COUNT; i++)
            {
@ -6922,10 +6951,10 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
                ImGui::SetNextWindowPos(ImGui::GetCursorScreenPos());
            if (show_samples && ImGui::BeginTooltip())
            {
-                ImGui::TextUnformatted("(R = radius, N = number of segments)");
+                ImGui::TextUnformatted("(R = radius, N = approx number of segments)");
                ImGui::Spacing();
                ImDrawList* draw_list = ImGui::GetWindowDrawList();
-                const float min_widget_width = ImGui::CalcTextSize("N: MMM\nR: MMM").x;
+                const float min_widget_width = ImGui::CalcTextSize("R: MMM\nN: MMM").x;
                for (int n = 0; n < 8; n++)
                {
                    const float RAD_MIN = 5.0f;
@ -6934,6 +6963,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)

                    ImGui::BeginGroup();

+                    // N is not always exact here due to how PathArcTo() function work internally
                    ImGui::Text("R: %.f\nN: %d", rad, draw_list->_CalcCircleAutoSegmentCount(rad));

                    const float canvas_width = IM_MAX(min_widget_width, rad * 2.0f);
@ -7241,7 +7271,7 @@ struct ExampleAppConsole

        // Reserve enough left-over height for 1 separator + 1 input text
        const float footer_height_to_reserve = ImGui::GetStyle().ItemSpacing.y + ImGui::GetFrameHeightWithSpacing();
-        if (ImGui::BeginChild("ScrollingRegion", ImVec2(0, -footer_height_to_reserve), ImGuiChildFlags_None, ImGuiWindowFlags_HorizontalScrollbar | ImGuiWindowFlags_NavFlattened))
+        if (ImGui::BeginChild("ScrollingRegion", ImVec2(0, -footer_height_to_reserve), ImGuiChildFlags_NavFlattened, ImGuiWindowFlags_HorizontalScrollbar))
        {
            if (ImGui::BeginPopupContextWindow())
            {
@ -7715,58 +7745,188 @@ static void ShowExampleAppLayout(bool* p_open)
 }

 //-----------------------------------------------------------------------------
-// [SECTION] Example App: Property Editor / ShowExampleAppPropertyEditor()
+// [SECTION] Helpers: ExampleTreeNode, ExampleMemberInfo (for use by Property Editor etc.)
 //-----------------------------------------------------------------------------

-static void ShowPlaceholderObject(const char* prefix, int uid)
+// Simple representation for a tree
+// (this is designed to be simple to understand for our demos, not to be efficient etc.)
+struct ExampleTreeNode
 {
-    // Use object uid as identifier. Most commonly you could also use the object pointer as a base ID.
-    ImGui::PushID(uid);
+    char                    Name[28];
+    ImGuiID                 UID = 0;
+    ExampleTreeNode*        Parent = NULL;
+    ImVector<ExampleTreeNode*> Childs;

-    // Text and Tree nodes are less high than framed widgets, using AlignTextToFramePadding() we add vertical spacing to make the tree lines equal high.
-    ImGui::TableNextRow();
-    ImGui::TableSetColumnIndex(0);
-    ImGui::AlignTextToFramePadding();
-    bool node_open = ImGui::TreeNode("Object", "%s_%u", prefix, uid);
-    ImGui::TableSetColumnIndex(1);
-    ImGui::Text("my sailor is rich");
+    // Data
+    bool                    HasData = false; // All leaves have data
+    bool                    DataIsEnabled = false;
+    int                     DataInt = 128;
+    ImVec2                  DataVec2 = ImVec2(0.0f, 3.141592f);
+};

-    if (node_open)
+// Simple representation of struct metadata/serialization data.
+// (this is a minimal version of what a typical advanced application may provide)
+struct ExampleMemberInfo
+{
+    const char*             Name;
+    ImGuiDataType           DataType;
+    int                     DataCount;
+    int                     Offset;
+};
+
+// Metadata description of ExampleTreeNode struct.
+static const ExampleMemberInfo ExampleTreeNodeMemberInfos[]
+{
+    { "Enabled",    ImGuiDataType_Bool,    1, offsetof(ExampleTreeNode, DataIsEnabled) },
+    { "MyInt",      ImGuiDataType_S32,     1, offsetof(ExampleTreeNode, DataInt) },
+    { "MyVec2",     ImGuiDataType_Float,   2, offsetof(ExampleTreeNode, DataVec2) },
+};
+
+static ExampleTreeNode* ExampleTree_CreateNode(const char* name, const ImGuiID uid, ExampleTreeNode* parent)
+{
+    ExampleTreeNode* node = IM_NEW(ExampleTreeNode);
+    snprintf(node->Name, IM_ARRAYSIZE(node->Name), "%s", name);
+    node->UID = uid;
+    node->Parent = parent;
+    if (parent)
+        parent->Childs.push_back(node);
+    return node;
+}
+
+// Create example tree data
+static ExampleTreeNode* ExampleTree_CreateDemoTree()
+{
+    static const char* root_names[] = { "Apple", "Banana", "Cherry", "Kiwi", "Mango", "Orange", "Pineapple", "Strawberry", "Watermelon" };
+    char name_buf[32];
+    ImGuiID uid = 0;
+    ExampleTreeNode* node_L0 = ExampleTree_CreateNode("<ROOT>", ++uid, NULL);
+    for (int idx_L0 = 0; idx_L0 < IM_ARRAYSIZE(root_names) * 2; idx_L0++)
    {
-        static float placeholder_members[8] = { 0.0f, 0.0f, 1.0f, 3.1416f, 100.0f, 999.0f };
-        for (int i = 0; i < 8; i++)
+        snprintf(name_buf, 32, "%s %d", root_names[idx_L0 / 2], idx_L0 % 2);
+        ExampleTreeNode* node_L1 = ExampleTree_CreateNode(name_buf, ++uid, node_L0);
+        const int number_of_childs = (int)strlen(node_L1->Name);
+        for (int idx_L1 = 0; idx_L1 < number_of_childs; idx_L1++)
        {
-            ImGui::PushID(i); // Use field index as identifier.
-            if (i < 2)
+            snprintf(name_buf, 32, "Child %d", idx_L1);
+            ExampleTreeNode* node_L2 = ExampleTree_CreateNode(name_buf, ++uid, node_L1);
+            node_L2->HasData = true;
+            if (idx_L1 == 0)
            {
-                ShowPlaceholderObject("Child", 424242);
+                snprintf(name_buf, 32, "Sub-child %d", 0);
+                ExampleTreeNode* node_L3 = ExampleTree_CreateNode(name_buf, ++uid, node_L2);
+                node_L3->HasData = true;
            }
-            else
+        }
+    }
+    return node_L0;
+}
+
+//-----------------------------------------------------------------------------
+// [SECTION] Example App: Property Editor / ShowExampleAppPropertyEditor()
+//-----------------------------------------------------------------------------
+// Some of the interactions are a bit lack-luster:
+// - We would want the table scrolling window to use NavFlattened.
+// - We would want pressing validating or leaving the filter to somehow restore focus.
+// - We may want more advanced filtering (child nodes) and clipper support: both will need extra work.
+//-----------------------------------------------------------------------------
+
+struct ExampleAppPropertyEditor
+{
+    ImGuiTextFilter     Filter;
+
+    void Draw(ExampleTreeNode* root_node)
+    {
+        ImGui::SetNextItemWidth(-FLT_MIN);
+        ImGui::SetNextItemShortcut(ImGuiMod_Ctrl | ImGuiKey_F, ImGuiInputFlags_Tooltip);
+        ImGui::PushItemFlag(ImGuiItemFlags_NoNavDefaultFocus, true);
+        if (ImGui::InputTextWithHint("##Filter", "incl,-excl", Filter.InputBuf, IM_ARRAYSIZE(Filter.InputBuf), ImGuiInputTextFlags_EscapeClearsAll))
+            Filter.Build();
+        ImGui::PopItemFlag();
+
+        ImGuiTableFlags table_flags = ImGuiTableFlags_Resizable | ImGuiTableFlags_ScrollY | ImGuiTableFlags_RowBg;
+        if (ImGui::BeginTable("##split", 2, table_flags))
+        {
+            ImGui::TableSetupColumn("Object", ImGuiTableColumnFlags_WidthStretch, 1.0f);
+            ImGui::TableSetupColumn("Contents", ImGuiTableColumnFlags_WidthStretch, 2.0f); // Default twice larger
+            //ImGui::TableSetupScrollFreeze(0, 1);
+            //ImGui::TableHeadersRow();
+
+            for (ExampleTreeNode* node : root_node->Childs)
+                if (Filter.PassFilter(node->Name)) // Filter root node
+                    DrawTreeNode(node);
+            ImGui::EndTable();
+        }
+    }
+
+    void DrawTreeNode(ExampleTreeNode* node)
+    {
+        // Object tree node
+        ImGui::PushID((int)node->UID);
+        ImGui::TableNextRow();
+        ImGui::TableSetColumnIndex(0);
+        ImGui::AlignTextToFramePadding();
+        ImGuiTreeNodeFlags tree_flags = ImGuiTreeNodeFlags_None;
+        tree_flags |= ImGuiTreeNodeFlags_SpanAllColumns | ImGuiTreeNodeFlags_AllowOverlap;      // Highlight whole row for visibility
+        tree_flags |= ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick;    // Standard opening mode as we are likely to want to add selection afterwards
+        tree_flags |= ImGuiTreeNodeFlags_NavLeftJumpsBackHere;                                  // Left arrow support
+        bool node_open = ImGui::TreeNodeEx("##Object", tree_flags, "%s", node->Name);
+        ImGui::TableSetColumnIndex(1);
+        ImGui::TextDisabled("UID: 0x%08X", node->UID);
+
+        // Display child and data
+        if (node_open)
+            for (ExampleTreeNode* child : node->Childs)
+                DrawTreeNode(child);
+        if (node_open && node->HasData)
+        {
+            // In a typical application, the structure description would be derived from a data-driven system.
+            // - We try to mimic this with our ExampleMemberInfo structure and the ExampleTreeNodeMemberInfos[] array.
+            // - Limits and some details are hard-coded to simplify the demo.
+            // - Text and Selectable are less high than framed widgets, using AlignTextToFramePadding() we add vertical spacing to make the selectable lines equal high.
+            for (const ExampleMemberInfo& field_desc : ExampleTreeNodeMemberInfos)
            {
-                // Here we use a TreeNode to highlight on hover (we could use e.g. Selectable as well)
                ImGui::TableNextRow();
                ImGui::TableSetColumnIndex(0);
                ImGui::AlignTextToFramePadding();
-                ImGuiTreeNodeFlags flags = ImGuiTreeNodeFlags_Leaf | ImGuiTreeNodeFlags_NoTreePushOnOpen | ImGuiTreeNodeFlags_Bullet;
-                ImGui::TreeNodeEx("Field", flags, "Field_%d", i);
-
+                ImGui::PushItemFlag(ImGuiItemFlags_NoTabStop | ImGuiItemFlags_NoNav, true);
+                ImGui::Selectable(field_desc.Name, false, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowOverlap);
+                ImGui::PopItemFlag();
                ImGui::TableSetColumnIndex(1);
-                ImGui::SetNextItemWidth(-FLT_MIN);
-                if (i >= 5)
-                    ImGui::InputFloat("##value", &placeholder_members[i], 1.0f);
-                else
-                    ImGui::DragFloat("##value", &placeholder_members[i], 0.01f);
-                ImGui::NextColumn();
+                ImGui::PushID(field_desc.Name);
+                void* field_ptr = (void*)(((unsigned char*)node) + field_desc.Offset);
+                switch (field_desc.DataType)
+                {
+                case ImGuiDataType_Bool:
+                {
+                    IM_ASSERT(field_desc.DataCount == 1);
+                    ImGui::Checkbox("##Editor", (bool*)field_ptr);
+                    break;
+                }
+                case ImGuiDataType_S32:
+                {
+                    int v_min = INT_MIN, v_max = INT_MAX;
+                    ImGui::SetNextItemWidth(-FLT_MIN);
+                    ImGui::DragScalarN("##Editor", field_desc.DataType, field_ptr, field_desc.DataCount, 1.0f, &v_min, &v_max);
+                    break;
+                }
+                case ImGuiDataType_Float:
+                {
+                    float v_min = 0.0f, v_max = 1.0f;
+                    ImGui::SetNextItemWidth(-FLT_MIN);
+                    ImGui::SliderScalarN("##Editor", field_desc.DataType, field_ptr, field_desc.DataCount, &v_min, &v_max);
+                    break;
+                }
+                }
+                ImGui::PopID();
            }
-            ImGui::PopID();
        }
-        ImGui::TreePop();
+        if (node_open)
+            ImGui::TreePop();
+        ImGui::PopID();
    }
-    ImGui::PopID();
-}
+};

-// Demonstrate create a simple property editor.
-// This demo is a bit lackluster nowadays, would be nice to improve.
+// Demonstrate creating a simple property editor.
 static void ShowExampleAppPropertyEditor(bool* p_open)
 {
    ImGui::SetNextWindowSize(ImVec2(430, 450), ImGuiCond_FirstUseEver);
@ -7777,25 +7937,10 @@ static void ShowExampleAppPropertyEditor(bool* p_open)
    }

    IMGUI_DEMO_MARKER("Examples/Property Editor");
-    HelpMarker(
-        "This example shows how you may implement a property editor using two columns.\n"
-        "All objects/fields data are dummies here.\n");
+    static ExampleAppPropertyEditor property_editor;
+    static ExampleTreeNode* tree_data = ExampleTree_CreateDemoTree();
+    property_editor.Draw(tree_data);

-    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(2, 2));
-    if (ImGui::BeginTable("##split", 2, ImGuiTableFlags_BordersOuter | ImGuiTableFlags_Resizable | ImGuiTableFlags_ScrollY))
-    {
-        ImGui::TableSetupScrollFreeze(0, 1);
-        ImGui::TableSetupColumn("Object");
-        ImGui::TableSetupColumn("Contents");
-        ImGui::TableHeadersRow();
-
-        // Iterate placeholder objects (all the same data)
-        for (int obj_i = 0; obj_i < 4; obj_i++)
-            ShowPlaceholderObject("Object", obj_i);
-
-        ImGui::EndTable();
-    }
-    ImGui::PopStyleVar();
    ImGui::End();
 }

@ -8617,6 +8762,7 @@ void ShowExampleAppDocuments(bool* p_open)
    // Submit Tab Bar and Tabs
    {
        ImGuiTabBarFlags tab_bar_flags = (opt_fitting_flags) | (opt_reorderable ? ImGuiTabBarFlags_Reorderable : 0);
+        tab_bar_flags |= ImGuiTabBarFlags_DrawSelectedOverline;
        if (ImGui::BeginTabBar("##tabs", tab_bar_flags))
        {
            if (opt_reorderable)
--- a/external/imgui/imgui/imgui_draw.cpp
+++ b/external/imgui/imgui/imgui_draw.cpp
@ -1,4 +1,4 @@
-// dear imgui, v1.90.8
+// dear imgui, v1.91.0 WIP
 // (drawing and font code)

 /*
@ -211,11 +211,13 @@ void ImGui::StyleColorsDark(ImGuiStyle* dst)
    colors[ImGuiCol_ResizeGrip]             = ImVec4(0.26f, 0.59f, 0.98f, 0.20f);
    colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
    colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
-    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
    colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
-    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
-    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
-    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
+    colors[ImGuiCol_TabSelected]            = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
+    colors[ImGuiCol_TabSelectedOverline]    = colors[ImGuiCol_HeaderActive];
+    colors[ImGuiCol_TabDimmed]              = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
+    colors[ImGuiCol_TabDimmedSelected]      = ImLerp(colors[ImGuiCol_TabSelected],  colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
    colors[ImGuiCol_PlotLines]              = ImVec4(0.61f, 0.61f, 0.61f, 1.00f);
    colors[ImGuiCol_PlotLinesHovered]       = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
    colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
@ -225,6 +227,7 @@ void ImGui::StyleColorsDark(ImGuiStyle* dst)
    colors[ImGuiCol_TableBorderLight]       = ImVec4(0.23f, 0.23f, 0.25f, 1.00f);   // Prefer using Alpha=1.0 here
    colors[ImGuiCol_TableRowBg]             = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    colors[ImGuiCol_TableRowBgAlt]          = ImVec4(1.00f, 1.00f, 1.00f, 0.06f);
+    colors[ImGuiCol_TextLink]               = colors[ImGuiCol_HeaderActive];
    colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
    colors[ImGuiCol_DragDropTarget]         = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
    colors[ImGuiCol_NavHighlight]           = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
@ -271,11 +274,13 @@ void ImGui::StyleColorsClassic(ImGuiStyle* dst)
    colors[ImGuiCol_ResizeGrip]             = ImVec4(1.00f, 1.00f, 1.00f, 0.10f);
    colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.78f, 0.82f, 1.00f, 0.60f);
    colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.78f, 0.82f, 1.00f, 0.90f);
-    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
    colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
-    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
-    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
-    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
+    colors[ImGuiCol_TabSelected]            = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
+    colors[ImGuiCol_TabSelectedOverline]    = colors[ImGuiCol_HeaderActive];
+    colors[ImGuiCol_TabDimmed]              = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
+    colors[ImGuiCol_TabDimmedSelected]      = ImLerp(colors[ImGuiCol_TabSelected],  colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_TabDimmedSelectedOverline] = colors[ImGuiCol_HeaderActive];
    colors[ImGuiCol_PlotLines]              = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    colors[ImGuiCol_PlotLinesHovered]       = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
    colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
@ -285,6 +290,7 @@ void ImGui::StyleColorsClassic(ImGuiStyle* dst)
    colors[ImGuiCol_TableBorderLight]       = ImVec4(0.26f, 0.26f, 0.28f, 1.00f);   // Prefer using Alpha=1.0 here
    colors[ImGuiCol_TableRowBg]             = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    colors[ImGuiCol_TableRowBgAlt]          = ImVec4(1.00f, 1.00f, 1.00f, 0.07f);
+    colors[ImGuiCol_TextLink]               = colors[ImGuiCol_HeaderActive];
    colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);
    colors[ImGuiCol_DragDropTarget]         = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
    colors[ImGuiCol_NavHighlight]           = colors[ImGuiCol_HeaderHovered];
@ -332,11 +338,13 @@ void ImGui::StyleColorsLight(ImGuiStyle* dst)
    colors[ImGuiCol_ResizeGrip]             = ImVec4(0.35f, 0.35f, 0.35f, 0.17f);
    colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
    colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
-    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.90f);
    colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
-    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
-    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
-    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.90f);
+    colors[ImGuiCol_TabSelected]            = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
+    colors[ImGuiCol_TabSelectedOverline]    = colors[ImGuiCol_HeaderActive];
+    colors[ImGuiCol_TabDimmed]              = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
+    colors[ImGuiCol_TabDimmedSelected]      = ImLerp(colors[ImGuiCol_TabSelected],  colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.26f, 0.59f, 1.00f, 1.00f);
    colors[ImGuiCol_PlotLines]              = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
    colors[ImGuiCol_PlotLinesHovered]       = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
    colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
@ -346,6 +354,7 @@ void ImGui::StyleColorsLight(ImGuiStyle* dst)
    colors[ImGuiCol_TableBorderLight]       = ImVec4(0.68f, 0.68f, 0.74f, 1.00f);   // Prefer using Alpha=1.0 here
    colors[ImGuiCol_TableRowBg]             = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    colors[ImGuiCol_TableRowBgAlt]          = ImVec4(0.30f, 0.30f, 0.30f, 0.09f);
+    colors[ImGuiCol_TextLink]               = colors[ImGuiCol_HeaderActive];
    colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
    colors[ImGuiCol_DragDropTarget]         = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
    colors[ImGuiCol_NavHighlight]           = colors[ImGuiCol_HeaderHovered];
--- a/external/imgui/imgui/imgui_internal.h
+++ b/external/imgui/imgui/imgui_internal.h
@ -1,4 +1,4 @@
-// dear imgui, v1.90.8
+// dear imgui, v1.91.0 WIP
 // (internal structures/api)

 // You may use this file to debug, understand or extend Dear ImGui features but we don't provide any guarantee of forward compatibility.
@ -135,7 +135,6 @@ struct ImGuiLastItemData;           // Status storage for last submitted items
 struct ImGuiLocEntry;               // A localization entry.
 struct ImGuiMenuColumns;            // Simple column measurement, currently used for MenuItem() only
 struct ImGuiNavItemData;            // Result of a gamepad/keyboard directional navigation move query result
-struct ImGuiNavTreeNodeData;        // Temporary storage for last TreeNode() being a Left arrow landing candidate.
 struct ImGuiMetricsConfig;          // Storage for ShowMetricsWindow() and DebugNodeXXX() functions
 struct ImGuiNextWindowData;         // Storage for SetNextWindow** functions
 struct ImGuiNextItemData;           // Storage for SetNextItem** functions
@ -154,6 +153,7 @@ struct ImGuiTableInstanceData;      // Storage for one instance of a same table
 struct ImGuiTableTempData;          // Temporary storage for one table (one per table in the stack), shared between tables.
 struct ImGuiTableSettings;          // Storage for a table .ini settings
 struct ImGuiTableColumnsSettings;   // Storage for a column .ini settings
+struct ImGuiTreeNodeStackData;      // Temporary storage for TreeNode().
 struct ImGuiTypingSelectState;      // Storage for GetTypingSelectRequest()
 struct ImGuiTypingSelectRequest;    // Storage for GetTypingSelectRequest() (aimed to be public)
 struct ImGuiWindow;                 // Storage for one window
@ -169,7 +169,6 @@ typedef int ImGuiLayoutType;            // -> enum ImGuiLayoutType_         // E
 typedef int ImGuiActivateFlags;         // -> enum ImGuiActivateFlags_      // Flags: for navigation/focus function (will be for ActivateItem() later)
 typedef int ImGuiDebugLogFlags;         // -> enum ImGuiDebugLogFlags_      // Flags: for ShowDebugLogWindow(), g.DebugLogFlags
 typedef int ImGuiFocusRequestFlags;     // -> enum ImGuiFocusRequestFlags_  // Flags: for FocusWindow();
-typedef int ImGuiItemFlags;             // -> enum ImGuiItemFlags_          // Flags: for PushItemFlag(), g.LastItemData.InFlags
 typedef int ImGuiItemStatusFlags;       // -> enum ImGuiItemStatusFlags_    // Flags: for g.LastItemData.StatusFlags
 typedef int ImGuiOldColumnFlags;        // -> enum ImGuiOldColumnFlags_     // Flags: for BeginColumns()
 typedef int ImGuiNavHighlightFlags;     // -> enum ImGuiNavHighlightFlags_  // Flags: for RenderNavHighlight()
@ -348,6 +347,7 @@ namespace ImStb
 // - Helper: ImPool<>
 // - Helper: ImChunkStream<>
 // - Helper: ImGuiTextIndex
+// - Helper: ImGuiStorage
 //-----------------------------------------------------------------------------

 // Helpers: Hashing
@ -722,7 +722,7 @@ struct ImChunkStream
    void    swap(ImChunkStream<T>& rhs) { rhs.Buf.swap(Buf); }
 };

-// Helper: ImGuiTextIndex<>
+// Helper: ImGuiTextIndex
 // Maintain a line index for a text buffer. This is a strong candidate to be moved into the public API.
 struct ImGuiTextIndex
 {
@ -736,6 +736,8 @@ struct ImGuiTextIndex
    void            append(const char* base, int old_size, int new_size);
 };

+// Helper: ImGuiStorage
+IMGUI_API ImGuiStoragePair* ImLowerBound(ImGuiStoragePair* in_begin, ImGuiStoragePair* in_end, ImGuiID key);
 //-----------------------------------------------------------------------------
 // [SECTION] ImDrawList support
 //-----------------------------------------------------------------------------
@ -772,6 +774,7 @@ struct IMGUI_API ImDrawListSharedData
    ImVec2          TexUvWhitePixel;            // UV of white pixel in the atlas
    ImFont*         Font;                       // Current/default font (optional, for simplified AddText overload)
    float           FontSize;                   // Current/default font size (optional, for simplified AddText overload)
+    float           FontScale;                  // Current/default font scale (== FontSize / Font->FontSize)
    float           CurveTessellationTol;       // Tessellation tolerance when using PathBezierCurveTo()
    float           CircleSegmentMaxError;      // Number of circle segments to use per pixel of radius for AddCircle() etc
    ImVec4          ClipRectFullscreen;         // Value for PushClipRectFullscreen()
@ -836,29 +839,26 @@ enum ImGuiDataTypePrivate_
 // [SECTION] Widgets support: flags, enums, data structures
 //-----------------------------------------------------------------------------

-// Flags used by upcoming items
+// Extend ImGuiItemFlags
 // - input: PushItemFlag() manipulates g.CurrentItemFlags, ItemAdd() calls may add extra flags.
 // - output: stored in g.LastItemData.InFlags
-// Current window shared by all windows.
-// This is going to be exposed in imgui.h when stabilized enough.
-enum ImGuiItemFlags_
+enum ImGuiItemFlagsPrivate_
 {
    // Controlled by user
-    ImGuiItemFlags_None                     = 0,
-    ImGuiItemFlags_NoTabStop                = 1 << 0,  // false     // Disable keyboard tabbing. This is a "lighter" version of ImGuiItemFlags_NoNav.
-    ImGuiItemFlags_ButtonRepeat             = 1 << 1,  // false     // Button() will return true multiple times based on io.KeyRepeatDelay and io.KeyRepeatRate settings.
-    ImGuiItemFlags_Disabled                 = 1 << 2,  // false     // Disable interactions but doesn't affect visuals. See BeginDisabled()/EndDisabled(). See github.com/ocornut/imgui/issues/211
-    ImGuiItemFlags_NoNav                    = 1 << 3,  // false     // Disable any form of focusing (keyboard/gamepad directional navigation and SetKeyboardFocusHere() calls)
-    ImGuiItemFlags_NoNavDefaultFocus        = 1 << 4,  // false     // Disable item being a candidate for default focus (e.g. used by title bar items)
-    ImGuiItemFlags_SelectableDontClosePopup = 1 << 5,  // false     // Disable MenuItem/Selectable() automatically closing their popup window
-    ImGuiItemFlags_MixedValue               = 1 << 6,  // false     // [BETA] Represent a mixed/indeterminate value, generally multi-selection where values differ. Currently only supported by Checkbox() (later should support all sorts of widgets)
-    ImGuiItemFlags_ReadOnly                 = 1 << 7,  // false     // [ALPHA] Allow hovering interactions but underlying value is not changed.
-    ImGuiItemFlags_NoWindowHoverableCheck   = 1 << 8,  // false     // Disable hoverable check in ItemHoverable()
-    ImGuiItemFlags_AllowOverlap             = 1 << 9,  // false     // Allow being overlapped by another widget. Not-hovered to Hovered transition deferred by a frame.
+    ImGuiItemFlags_Disabled                 = 1 << 10, // false     // Disable interactions (DOES NOT affect visuals, see BeginDisabled()/EndDisabled() for full disable feature, and github #211).
+    ImGuiItemFlags_ReadOnly                 = 1 << 11, // false     // [ALPHA] Allow hovering interactions but underlying value is not changed.
+    ImGuiItemFlags_MixedValue               = 1 << 12, // false     // [BETA] Represent a mixed/indeterminate value, generally multi-selection where values differ. Currently only supported by Checkbox() (later should support all sorts of widgets)
+    ImGuiItemFlags_NoWindowHoverableCheck   = 1 << 13, // false     // Disable hoverable check in ItemHoverable()
+    ImGuiItemFlags_AllowOverlap             = 1 << 14, // false     // Allow being overlapped by another widget. Not-hovered to Hovered transition deferred by a frame.

    // Controlled by widget code
-    ImGuiItemFlags_Inputable                = 1 << 10, // false     // [WIP] Auto-activate input mode when tab focused. Currently only used and supported by a few items before it becomes a generic feature.
-    ImGuiItemFlags_HasSelectionUserData     = 1 << 11, // false     // Set by SetNextItemSelectionUserData()
+    ImGuiItemFlags_Inputable                = 1 << 20, // false     // [WIP] Auto-activate input mode when tab focused. Currently only used and supported by a few items before it becomes a generic feature.
+    ImGuiItemFlags_HasSelectionUserData     = 1 << 21, // false     // Set by SetNextItemSelectionUserData()
+
+    ImGuiItemFlags_Default_                 = ImGuiItemFlags_AutoClosePopups,    // Please don't change, use PushItemFlag() instead.
+
+    // Obsolete
+    //ImGuiItemFlags_SelectableDontClosePopup = !ImGuiItemFlags_AutoClosePopups, // Can't have a redirect as we inverted the behavior
 };

 // Status flags for an already submitted item
@ -961,8 +961,8 @@ enum ImGuiSelectableFlagsPrivate_
 // Extend ImGuiTreeNodeFlags_
 enum ImGuiTreeNodeFlagsPrivate_
 {
-    ImGuiTreeNodeFlags_ClipLabelForTrailingButton = 1 << 20,
-    ImGuiTreeNodeFlags_UpsideDownArrow            = 1 << 21,// (FIXME-WIP) Turn Down arrow into an Up arrow, but reversed trees (#6517)
+    ImGuiTreeNodeFlags_ClipLabelForTrailingButton = 1 << 28,// FIXME-WIP: Hard-coded for CollapsingHeader()
+    ImGuiTreeNodeFlags_UpsideDownArrow            = 1 << 29,// FIXME-WIP: Turn Down arrow into an Up arrow, but reversed trees (#6517)
 };

 enum ImGuiSeparatorFlags_
@ -1247,14 +1247,16 @@ struct ImGuiLastItemData
    ImGuiLastItemData()     { memset(this, 0, sizeof(*this)); }
 };

-// Store data emitted by TreeNode() for usage by TreePop() to implement ImGuiTreeNodeFlags_NavLeftJumpsBackHere.
-// This is the minimum amount of data that we need to perform the equivalent of NavApplyItemToResult() and which we can't infer in TreePop()
-// Only stored when the node is a potential candidate for landing on a Left arrow jump.
-struct ImGuiNavTreeNodeData
+// Store data emitted by TreeNode() for usage by TreePop()
+// - To implement ImGuiTreeNodeFlags_NavLeftJumpsBackHere: store the minimum amount of data
+//   which we can't infer in TreePop(), to perform the equivalent of NavApplyItemToResult().
+//   Only stored when the node is a potential candidate for landing on a Left arrow jump.
+struct ImGuiTreeNodeStackData
 {
    ImGuiID                 ID;
-    ImGuiItemFlags          InFlags;
-    ImRect                  NavRect;
+    ImGuiTreeNodeFlags      TreeFlags;
+    ImGuiItemFlags          InFlags;    // Used for nav landing
+    ImRect                  NavRect;    // Used for nav landing
 };

 struct IMGUI_API ImGuiStackSizes
@ -1596,7 +1598,7 @@ struct ImGuiNavItemData
    float               DistBox;        //      Move    // Best candidate box distance to current NavId
    float               DistCenter;     //      Move    // Best candidate center distance to current NavId
    float               DistAxial;      //      Move    // Best candidate axial distance to current NavId
-    ImGuiSelectionUserData SelectionUserData;//I+Mov    // Best candidate SetNextItemSelectionData() value.
+    ImGuiSelectionUserData SelectionUserData;//I+Mov    // Best candidate SetNextItemSelectionUserData() value. Valid if (InFlags & ImGuiItemFlags_HasSelectionUserData)

    ImGuiNavItemData()  { Clear(); }
    void Clear()        { Window = NULL; ID = FocusScopeId = 0; InFlags = 0; SelectionUserData = -1; DistBox = DistCenter = DistAxial = FLT_MAX; }
@ -1803,6 +1805,7 @@ enum ImGuiLocKey : int
    ImGuiLocKey_WindowingMainMenuBar,
    ImGuiLocKey_WindowingPopup,
    ImGuiLocKey_WindowingUntitled,
+    ImGuiLocKey_CopyLink,
    ImGuiLocKey_COUNT
 };

@ -1924,6 +1927,7 @@ struct ImGuiContext
    ImFont*                 Font;                               // (Shortcut) == FontStack.empty() ? IO.Font : FontStack.back()
    float                   FontSize;                           // (Shortcut) == FontBaseSize * g.CurrentWindow->FontWindowScale == window->FontSize(). Text height for current window.
    float                   FontBaseSize;                       // (Shortcut) == IO.FontGlobalScale * Font->Scale * Font->FontSize. Base text height.
+    float                   FontScale;                          // == FontSize / Font->FontSize
    float                   CurrentDpiScale;                    // Current window/viewport DpiScale
    ImDrawListSharedData    DrawListSharedData;
    double                  Time;
@ -1936,6 +1940,7 @@ struct ImGuiContext
    bool                    GcCompactAll;                       // Request full GC
    bool                    TestEngineHookItems;                // Will call test engine hooks: ImGuiTestEngineHook_ItemAdd(), ImGuiTestEngineHook_ItemInfo(), ImGuiTestEngineHook_Log()
    void*                   TestEngine;                         // Test engine user data
+    char                    ContextName[16];                    // Storage for a context name (to facilitate debugging multi-context setups)

    // Inputs
    ImVector<ImGuiInputEvent> InputEventsQueue;                 // Input events which will be trickled/written into IO structure.
@ -1955,6 +1960,7 @@ struct ImGuiContext
    ImGuiWindow*            CurrentWindow;                      // Window being drawn into
    ImGuiWindow*            HoveredWindow;                      // Window the mouse is hovering. Will typically catch mouse inputs.
    ImGuiWindow*            HoveredWindowUnderMovingWindow;     // Hovered window ignoring MovingWindow. Only set if MovingWindow is set.
+    ImGuiWindow*            HoveredWindowBeforeClear;           // Window the mouse is hovering. Filled even with _NoMouse. This is currently useful for multi-context compositors.
    ImGuiWindow*            MovingWindow;                       // Track the window we clicked on (in order to preserve focus). The actual window that is moved is generally MovingWindow->RootWindow.
    ImGuiWindow*            WheelingWindow;                     // Track the window we started mouse-wheeling on. Until a timer elapse or mouse has moved, generally keep scrolling the same window even if during the course of scrolling the mouse ends up hovering a child window.
    ImVec2                  WheelingWindowRefMousePos;
@ -1971,7 +1977,7 @@ struct ImGuiContext
    float                   HoveredIdTimer;                     // Measure contiguous hovering time
    float                   HoveredIdNotActiveTimer;            // Measure contiguous hovering time where the item has not been active
    bool                    HoveredIdAllowOverlap;
-    bool                    HoveredIdDisabled;                  // At least one widget passed the rect test, but has been discarded by disabled flag or popup inhibit. May be true even if HoveredId == 0.
+    bool                    HoveredIdIsDisabled;                // At least one widget passed the rect test, but has been discarded by disabled flag or popup inhibit. May be true even if HoveredId == 0.
    bool                    ItemUnclipByLog;                    // Disable ItemAdd() clipping, essentially a memory-locality friendly copy of LogEnabled
    ImGuiID                 ActiveId;                           // Active widget
    ImGuiID                 ActiveIdIsAlive;                    // Active widget has been seen this frame (we can't use a bool as the ActiveId may change within the frame)
@ -2030,7 +2036,7 @@ struct ImGuiContext
    ImVector<ImGuiGroupData>        GroupStack;                 // Stack for BeginGroup()/EndGroup() - not inherited by Begin()
    ImVector<ImGuiPopupData>        OpenPopupStack;             // Which popups are open (persistent)
    ImVector<ImGuiPopupData>        BeginPopupStack;            // Which level of BeginPopup() we are in (reset every frame)
-    ImVector<ImGuiNavTreeNodeData>  NavTreeNodeStack;           // Stack for TreeNode() when a NavLeft requested is emitted.
+    ImVector<ImGuiTreeNodeStackData>TreeNodeStack;              // Stack for TreeNode()

    // Viewports
    ImVector<ImGuiViewportP*> Viewports;                        // Active viewports (Size==1 in 'master' branch). Each viewports hold their copy of ImDrawData.
@ -2039,6 +2045,7 @@ struct ImGuiContext
    ImGuiWindow*            NavWindow;                          // Focused window for navigation. Could be called 'FocusedWindow'
    ImGuiID                 NavId;                              // Focused item for navigation
    ImGuiID                 NavFocusScopeId;                    // Focused focus scope (e.g. selection code often wants to "clear other items" when landing on an item of the same scope)
+    ImGuiNavLayer           NavLayer;                           // Focused layer (main scrolling layer, or menu/title bar layer)
    ImGuiID                 NavActivateId;                      // ~~ (g.ActiveId == 0) && (IsKeyPressed(ImGuiKey_Space) || IsKeyDown(ImGuiKey_Enter) || IsKeyPressed(ImGuiKey_NavGamepadActivate)) ? NavId : 0, also set when calling ActivateItem()
    ImGuiID                 NavActivateDownId;                  // ~~ IsKeyDown(ImGuiKey_Space) || IsKeyDown(ImGuiKey_Enter) || IsKeyDown(ImGuiKey_NavGamepadActivate) ? NavId : 0
    ImGuiID                 NavActivatePressedId;               // ~~ IsKeyPressed(ImGuiKey_Space) || IsKeyPressed(ImGuiKey_Enter) || IsKeyPressed(ImGuiKey_NavGamepadActivate) ? NavId : 0 (no repeat)
@ -2046,13 +2053,9 @@ struct ImGuiContext
    ImVector<ImGuiFocusScopeData> NavFocusRoute;                // Reversed copy focus scope stack for NavId (should contains NavFocusScopeId). This essentially follow the window->ParentWindowForFocusRoute chain.
    ImGuiID                 NavHighlightActivatedId;
    float                   NavHighlightActivatedTimer;
-    ImGuiID                 NavJustMovedToId;                   // Just navigated to this id (result of a successfully MoveRequest).
-    ImGuiID                 NavJustMovedToFocusScopeId;         // Just navigated to this focus scope id (result of a successfully MoveRequest).
-    ImGuiKeyChord           NavJustMovedToKeyMods;
    ImGuiID                 NavNextActivateId;                  // Set by ActivateItem(), queued until next frame.
    ImGuiActivateFlags      NavNextActivateFlags;
    ImGuiInputSource        NavInputSource;                     // Keyboard or Gamepad mode? THIS CAN ONLY BE ImGuiInputSource_Keyboard or ImGuiInputSource_Mouse
-    ImGuiNavLayer           NavLayer;                           // Layer we are navigating on. For now the system is hard-coded for 0=main contents and 1=menu/title bar, may expose layers later.
    ImGuiSelectionUserData  NavLastValidSelectionUserData;      // Last valid data passed to SetNextItemSelectionUser(), or -1. For current window. Not reset when focusing an item that doesn't have selection data.
    bool                    NavIdIsAlive;                       // Nav widget has been seen this frame ~~ NavRectRel is valid
    bool                    NavMousePosDirty;                   // When set we will update mouse position if (io.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) if set (NB: this not enabled by default)
@ -2083,6 +2086,14 @@ struct ImGuiContext
    ImGuiNavItemData        NavMoveResultOther;                 // Best move request candidate within NavWindow's flattened hierarchy (when using ImGuiWindowFlags_NavFlattened flag)
    ImGuiNavItemData        NavTabbingResultFirst;              // First tabbing request candidate within NavWindow and flattened hierarchy

+    // Navigation: record of last move request
+    ImGuiID                 NavJustMovedFromFocusScopeId;       // Just navigated from this focus scope id (result of a successfully MoveRequest).
+    ImGuiID                 NavJustMovedToId;                   // Just navigated to this id (result of a successfully MoveRequest).
+    ImGuiID                 NavJustMovedToFocusScopeId;         // Just navigated to this focus scope id (result of a successfully MoveRequest).
+    ImGuiKeyChord           NavJustMovedToKeyMods;
+    bool                    NavJustMovedToIsTabbing;            // Copy of ImGuiNavMoveFlags_IsTabbing. Maybe we should store whole flags.
+    bool                    NavJustMovedToHasSelectionData;     // Copy of move result's InFlags & ImGuiItemFlags_HasSelectionUserData). Maybe we should just store ImGuiNavItemData.
+
    // Navigation: Windowing (CTRL+TAB for list, or Menu button + keys or directional pads to move/resize)
    ImGuiKeyChord           ConfigNavWindowingKeyNext;          // = ImGuiMod_Ctrl | ImGuiKey_Tab (or ImGuiMod_Super | ImGuiKey_Tab on OS X). For reconfiguration (see #4828)
    ImGuiKeyChord           ConfigNavWindowingKeyPrev;          // = ImGuiMod_Ctrl | ImGuiMod_Shift | ImGuiKey_Tab (or ImGuiMod_Super | ImGuiMod_Shift | ImGuiKey_Tab on OS X)
@ -2187,7 +2198,7 @@ struct ImGuiContext

    // Platform support
    ImGuiPlatformImeData    PlatformImeData;                    // Data updated by current frame
-    ImGuiPlatformImeData    PlatformImeDataPrev;                // Previous frame data (when changing we will call io.SetPlatformImeDataFn
+    ImGuiPlatformImeData    PlatformImeDataPrev;                // Previous frame data. When changed we call the io.PlatformSetImeDataFn() handler.

    // Settings
    bool                    SettingsLoaded;
@ -2254,7 +2265,7 @@ struct ImGuiContext
        Initialized = false;
        FontAtlasOwnedByContext = shared_font_atlas ? false : true;
        Font = NULL;
-        FontSize = FontBaseSize = CurrentDpiScale = 0.0f;
+        FontSize = FontBaseSize = FontScale = CurrentDpiScale = 0.0f;
        IO.Fonts = shared_font_atlas ? shared_font_atlas : IM_NEW(ImFontAtlas)();
        Time = 0.0f;
        FrameCount = 0;
@ -2263,6 +2274,7 @@ struct ImGuiContext
        GcCompactAll = false;
        TestEngineHookItems = false;
        TestEngine = NULL;
+        memset(ContextName, 0, sizeof(ContextName));

        InputEventsNextMouseSource = ImGuiMouseSource_Mouse;
        InputEventsNextEventId = 1;
@ -2271,6 +2283,7 @@ struct ImGuiContext
        CurrentWindow = NULL;
        HoveredWindow = NULL;
        HoveredWindowUnderMovingWindow = NULL;
+        HoveredWindowBeforeClear = NULL;
        MovingWindow = NULL;
        WheelingWindow = NULL;
        WheelingWindowStartFrame = WheelingWindowScrolledFrame = -1;
@ -2279,7 +2292,7 @@ struct ImGuiContext
        DebugHookIdInfo = 0;
        HoveredId = HoveredIdPreviousFrame = 0;
        HoveredIdAllowOverlap = false;
-        HoveredIdDisabled = false;
+        HoveredIdIsDisabled = false;
        HoveredIdTimer = HoveredIdNotActiveTimer = 0.0f;
        ItemUnclipByLog = false;
        ActiveId = 0;
@ -2317,18 +2330,18 @@ struct ImGuiContext

        NavWindow = NULL;
        NavId = NavFocusScopeId = NavActivateId = NavActivateDownId = NavActivatePressedId = 0;
-        NavJustMovedToId = NavJustMovedToFocusScopeId = NavNextActivateId = 0;
+        NavLayer = ImGuiNavLayer_Main;
+        NavNextActivateId = 0;
        NavActivateFlags = NavNextActivateFlags = ImGuiActivateFlags_None;
        NavHighlightActivatedId = 0;
        NavHighlightActivatedTimer = 0.0f;
-        NavJustMovedToKeyMods = ImGuiMod_None;
        NavInputSource = ImGuiInputSource_Keyboard;
-        NavLayer = ImGuiNavLayer_Main;
        NavLastValidSelectionUserData = ImGuiSelectionUserData_Invalid;
        NavIdIsAlive = false;
        NavMousePosDirty = false;
        NavDisableHighlight = true;
        NavDisableMouseHover = false;
+
        NavAnyRequest = false;
        NavInitRequest = false;
        NavInitRequestFromMove = false;
@ -2343,6 +2356,11 @@ struct ImGuiContext
        NavTabbingDir = 0;
        NavTabbingCounter = 0;

+        NavJustMovedFromFocusScopeId = NavJustMovedToId = NavJustMovedToFocusScopeId = 0;
+        NavJustMovedToKeyMods = ImGuiMod_None;
+        NavJustMovedToIsTabbing = false;
+        NavJustMovedToHasSelectionData = false;
+
        // All platforms use Ctrl+Tab but Ctrl<>Super are swapped on Mac...
        // FIXME: Because this value is stored, it annoyingly interfere with toggling io.ConfigMacOSXBehaviors updating this..
        ConfigNavWindowingKeyNext = IO.ConfigMacOSXBehaviors ? (ImGuiMod_Super | ImGuiKey_Tab) : (ImGuiMod_Ctrl | ImGuiKey_Tab);
@ -2483,7 +2501,7 @@ struct IMGUI_API ImGuiWindowTempData
    ImVec2                  MenuBarOffset;          // MenuBarOffset.x is sort of equivalent of a per-layer CursorPos.x, saved/restored as we switch to the menu bar. The only situation when MenuBarOffset.y is > 0 if when (SafeAreaPadding.y > FramePadding.y), often used on TVs.
    ImGuiMenuColumns        MenuColumns;            // Simplified columns storage for menu items measurement
    int                     TreeDepth;              // Current tree depth.
-    ImU32                   TreeJumpToParentOnPopMask; // Store a copy of !g.NavIdIsAlive for TreeDepth 0..31.. Could be turned into a ImU64 if necessary.
+    ImU32                   TreeHasStackDataDepthMask; // Store whether given depth has ImGuiTreeNodeStackData data. Could be turned into a ImU64 if necessary.
    ImVector<ImGuiWindow*>  ChildWindows;
    ImGuiStorage*           StateStorage;           // Current persistent per-window storage (store e.g. tree node open/close state)
    ImGuiOldColumns*        CurrentColumns;         // Current columns set
@ -3131,8 +3149,6 @@ namespace ImGui
    IMGUI_API void          ShrinkWidths(ImGuiShrinkWidthItem* items, int count, float width_excess);

    // Parameter stacks (shared)
-    IMGUI_API void          PushItemFlag(ImGuiItemFlags option, bool enabled);
-    IMGUI_API void          PopItemFlag();
    IMGUI_API const ImGuiDataVarInfo* GetStyleVarInfo(ImGuiStyleVar idx);
    IMGUI_API void          BeginDisabledOverrideReenable();
    IMGUI_API void          EndDisabledOverrideReenable();
@ -3143,16 +3159,16 @@ namespace ImGui
    IMGUI_API void          LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end = NULL);
    IMGUI_API void          LogSetNextTextDecoration(const char* prefix, const char* suffix);

-    // Popups, Modals, Tooltips
+    // Childs
    IMGUI_API bool          BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, ImGuiChildFlags child_flags, ImGuiWindowFlags window_flags);
+
+    // Popups, Modals
+    IMGUI_API bool          BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_window_flags);
    IMGUI_API void          OpenPopupEx(ImGuiID id, ImGuiPopupFlags popup_flags = ImGuiPopupFlags_None);
    IMGUI_API void          ClosePopupToLevel(int remaining, bool restore_focus_to_window_under_popup);
    IMGUI_API void          ClosePopupsOverWindow(ImGuiWindow* ref_window, bool restore_focus_to_window_under_popup);
    IMGUI_API void          ClosePopupsExceptModals();
    IMGUI_API bool          IsPopupOpen(ImGuiID id, ImGuiPopupFlags popup_flags);
-    IMGUI_API bool          BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags);
-    IMGUI_API bool          BeginTooltipEx(ImGuiTooltipFlags tooltip_flags, ImGuiWindowFlags extra_window_flags);
-    IMGUI_API bool          BeginTooltipHidden();
    IMGUI_API ImRect        GetPopupAllowedExtentRect(ImGuiWindow* window);
    IMGUI_API ImGuiWindow*  GetTopMostPopupModal();
    IMGUI_API ImGuiWindow*  GetTopMostAndVisiblePopupModal();
@ -3160,6 +3176,10 @@ namespace ImGui
    IMGUI_API ImVec2        FindBestWindowPosForPopup(ImGuiWindow* window);
    IMGUI_API ImVec2        FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy);

+    // Tooltips
+    IMGUI_API bool          BeginTooltipEx(ImGuiTooltipFlags tooltip_flags, ImGuiWindowFlags extra_window_flags);
+    IMGUI_API bool          BeginTooltipHidden();
+
    // Menus
    IMGUI_API bool          BeginViewportSideBar(const char* name, ImGuiViewport* viewport, ImGuiDir dir, float size, ImGuiWindowFlags window_flags);
    IMGUI_API bool          BeginMenuEx(const char* label, const char* icon, bool enabled = true);
@ -3177,7 +3197,7 @@ namespace ImGui
    IMGUI_API void          NavMoveRequestSubmit(ImGuiDir move_dir, ImGuiDir clip_dir, ImGuiNavMoveFlags move_flags, ImGuiScrollFlags scroll_flags);
    IMGUI_API void          NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, ImGuiNavMoveFlags move_flags, ImGuiScrollFlags scroll_flags);
    IMGUI_API void          NavMoveRequestResolveWithLastItem(ImGuiNavItemData* result);
-    IMGUI_API void          NavMoveRequestResolveWithPastTreeNode(ImGuiNavItemData* result, ImGuiNavTreeNodeData* tree_node_data);
+    IMGUI_API void          NavMoveRequestResolveWithPastTreeNode(ImGuiNavItemData* result, ImGuiTreeNodeStackData* tree_node_data);
    IMGUI_API void          NavMoveRequestCancel();
    IMGUI_API void          NavMoveRequestApplyResult();
    IMGUI_API void          NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags);
@ -3321,7 +3341,6 @@ namespace ImGui
    IMGUI_API void          TableOpenContextMenu(int column_n = -1);
    IMGUI_API void          TableSetColumnWidth(int column_n, float width);
    IMGUI_API void          TableSetColumnSortDirection(int column_n, ImGuiSortDirection sort_direction, bool append_to_sort_specs);
-    IMGUI_API int           TableGetHoveredColumn();    // May use (TableGetColumnFlags() & ImGuiTableColumnFlags_IsHovered) instead. Return hovered column. return -1 when table is not hovered. return columns_count if the unused space at the right of visible columns is hovered.
    IMGUI_API int           TableGetHoveredRow();       // Retrieve *PREVIOUS FRAME* hovered row. This difference with TableGetHoveredColumn() is the reason why this is not public yet.
    IMGUI_API float         TableGetHeaderRowHeight();
    IMGUI_API float         TableGetHeaderAngledMaxLabelWidth();
@ -3442,12 +3461,15 @@ namespace ImGui
    IMGUI_API bool          DragBehavior(ImGuiID id, ImGuiDataType data_type, void* p_v, float v_speed, const void* p_min, const void* p_max, const char* format, ImGuiSliderFlags flags);
    IMGUI_API bool          SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* p_v, const void* p_min, const void* p_max, const char* format, ImGuiSliderFlags flags, ImRect* out_grab_bb);
    IMGUI_API bool          SplitterBehavior(const ImRect& bb, ImGuiID id, ImGuiAxis axis, float* size1, float* size2, float min_size1, float min_size2, float hover_extend = 0.0f, float hover_visibility_delay = 0.0f, ImU32 bg_col = 0);
-    IMGUI_API bool          TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end = NULL);
-    IMGUI_API void          TreePushOverrideID(ImGuiID id);
-    IMGUI_API void          TreeNodeSetOpen(ImGuiID id, bool open);
-    IMGUI_API bool          TreeNodeUpdateNextOpen(ImGuiID id, ImGuiTreeNodeFlags flags);   // Return open state. Consume previous SetNextItemOpen() data, if any. May return true when logging.
    IMGUI_API void          SetNextItemSelectionUserData(ImGuiSelectionUserData selection_user_data);

+    // Widgets: Tree Nodes
+    IMGUI_API bool          TreeNodeBehavior(ImGuiID id, ImGuiID storage_id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end = NULL);
+    IMGUI_API void          TreePushOverrideID(ImGuiID id);
+    IMGUI_API bool          TreeNodeGetOpen(ImGuiID storage_id);
+    IMGUI_API void          TreeNodeSetOpen(ImGuiID storage_id, bool open);
+    IMGUI_API bool          TreeNodeUpdateNextOpen(ImGuiID storage_id, ImGuiTreeNodeFlags flags);   // Return open state. Consume previous SetNextItemOpen() data, if any. May return true when logging.
+
    // Template functions are instantiated in imgui_widgets.cpp for a finite number of types.
    // To use them externally (for custom widget) you may need an "extern template" statement in your code in order to link to existing instances and silence Clang warnings (see #2036).
    // e.g. " extern template IMGUI_API float RoundScalarWithFormatT<float, float>(const char* format, ImGuiDataType data_type, float v); "
@ -3493,12 +3515,8 @@ namespace ImGui
    IMGUI_API void          GcCompactTransientWindowBuffers(ImGuiWindow* window);
    IMGUI_API void          GcAwakeTransientWindowBuffers(ImGuiWindow* window);

-    // Debug Log
-    IMGUI_API void          DebugLog(const char* fmt, ...) IM_FMTARGS(1);
-    IMGUI_API void          DebugLogV(const char* fmt, va_list args) IM_FMTLIST(1);
-    IMGUI_API void          DebugAllocHook(ImGuiDebugAllocInfo* info, int frame_count, void* ptr, size_t size); // size >= 0 : alloc, size = -1 : free
-
    // Debug Tools
+    IMGUI_API void          DebugAllocHook(ImGuiDebugAllocInfo* info, int frame_count, void* ptr, size_t size); // size >= 0 : alloc, size = -1 : free
    IMGUI_API void          ErrorCheckEndFrameRecover(ImGuiErrorLogCallback log_callback, void* user_data = NULL);
    IMGUI_API void          ErrorCheckEndWindowRecover(ImGuiErrorLogCallback log_callback, void* user_data = NULL);
    IMGUI_API void          ErrorCheckUsingSetCursorPosToExtendParentBoundaries();
--- a/external/imgui/imgui/imgui_tables.cpp
+++ b/external/imgui/imgui/imgui_tables.cpp
@ -1,4 +1,4 @@
-// dear imgui, v1.90.8
+// dear imgui, v1.91.0 WIP
 // (tables and columns code)

 /*
@ -412,8 +412,8 @@ bool    ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
            SetNextWindowScroll(ImVec2(0.0f, 0.0f));

        // Create scrolling region (without border and zero window padding)
-        ImGuiWindowFlags child_flags = (flags & ImGuiTableFlags_ScrollX) ? ImGuiWindowFlags_HorizontalScrollbar : ImGuiWindowFlags_None;
-        BeginChildEx(name, instance_id, outer_rect.GetSize(), false, child_flags);
+        ImGuiWindowFlags child_window_flags = (flags & ImGuiTableFlags_ScrollX) ? ImGuiWindowFlags_HorizontalScrollbar : ImGuiWindowFlags_None;
+        BeginChildEx(name, instance_id, outer_rect.GetSize(), ImGuiChildFlags_None, child_window_flags);
        table->InnerWindow = g.CurrentWindow;
        table->WorkRect = table->InnerWindow->WorkRect;
        table->OuterRect = table->InnerWindow->Rect();
@ -3269,7 +3269,7 @@ void ImGui::TableAngledHeadersRowEx(ImGuiID row_id, float angle, float max_label
    ButtonBehavior(row_r, row_id, NULL, NULL);
    KeepAliveID(row_id);

-    const float ascent_scaled = g.Font->Ascent * (g.FontSize / g.Font->FontSize); // FIXME: Standardize those scaling factors better
+    const float ascent_scaled = g.Font->Ascent * g.FontScale; // FIXME: Standardize those scaling factors better
    const float line_off_for_ascent_x = (ImMax((g.FontSize - ascent_scaled) * 0.5f, 0.0f) / -sin_a) * (flip_label ? -1.0f : 1.0f);
    const ImVec2 padding = g.Style.CellPadding; // We will always use swapped component
    const ImVec2 align = g.Style.TableAngledHeadersTextAlign;
@ -3471,7 +3471,7 @@ void ImGui::TableDrawDefaultContextMenu(ImGuiTable* table, ImGuiTableFlags flags
            Separator();
        want_separator = true;

-        PushItemFlag(ImGuiItemFlags_SelectableDontClosePopup, true);
+        PushItemFlag(ImGuiItemFlags_AutoClosePopups, false);
        for (int other_column_n = 0; other_column_n < table->ColumnsCount; other_column_n++)
        {
            ImGuiTableColumn* other_column = &table->Columns[other_column_n];
--- a/external/imgui/imgui/imgui_widgets.cpp
+++ b/external/imgui/imgui/imgui_widgets.cpp
@ -1,4 +1,4 @@
-// dear imgui, v1.90.8
+// dear imgui, v1.91.0 WIP
 // (widgets code)

 /*
@ -422,6 +422,7 @@ void ImGui::BulletTextV(const char* fmt, va_list args)
 // - RadioButton()
 // - ProgressBar()
 // - Bullet()
+// - Hyperlink()
 //-------------------------------------------------------------------------

 // The ButtonBehavior() function is key to many interactions and used by many/most widgets.
@ -834,17 +835,15 @@ bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos)
        return pressed;

    // Render
-    // FIXME: Clarify this mess
-    ImU32 col = GetColorU32(held ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered);
-    ImVec2 center = bb.GetCenter();
+    ImU32 bg_col = GetColorU32(held ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered);
    if (hovered)
-        window->DrawList->AddCircleFilled(center, ImMax(2.0f, g.FontSize * 0.5f + 1.0f), col);
-
-    float cross_extent = g.FontSize * 0.5f * 0.7071f - 1.0f;
+        window->DrawList->AddRectFilled(bb.Min, bb.Max, bg_col);
+    RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_Compact);
    ImU32 cross_col = GetColorU32(ImGuiCol_Text);
-    center -= ImVec2(0.5f, 0.5f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent, +cross_extent), center + ImVec2(-cross_extent, -cross_extent), cross_col, 1.0f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent, -cross_extent), center + ImVec2(-cross_extent, +cross_extent), cross_col, 1.0f);
+    ImVec2 cross_center = bb.GetCenter() - ImVec2(0.5f, 0.5f);
+    float cross_extent = g.FontSize * 0.5f * 0.7071f - 1.0f;
+    window->DrawList->AddLine(cross_center + ImVec2(+cross_extent, +cross_extent), cross_center + ImVec2(-cross_extent, -cross_extent), cross_col, 1.0f);
+    window->DrawList->AddLine(cross_center + ImVec2(+cross_extent, -cross_extent), cross_center + ImVec2(-cross_extent, +cross_extent), cross_col, 1.0f);

    return pressed;
 }
@ -865,7 +864,8 @@ bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
    ImU32 bg_col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
    ImU32 text_col = GetColorU32(ImGuiCol_Text);
    if (hovered || held)
-        window->DrawList->AddCircleFilled(bb.GetCenter() + ImVec2(0.0f, -0.5f), g.FontSize * 0.5f + 1.0f, bg_col);
+        window->DrawList->AddRectFilled(bb.Min, bb.Max, bg_col);
+    RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_Compact);
    RenderArrow(window->DrawList, bb.Min, text_col, window->Collapsed ? ImGuiDir_Right : ImGuiDir_Down, 1.0f);

    // Switch to moving the window after mouse is moved beyond the initial drag threshold
@ -1132,7 +1132,8 @@ bool ImGui::Checkbox(const char* label, bool* v)
    const ImVec2 pos = window->DC.CursorPos;
    const ImRect total_bb(pos, pos + ImVec2(square_sz + (label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f), label_size.y + style.FramePadding.y * 2.0f));
    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, id))
+    const bool is_visible = ItemAdd(total_bb, id);
+    if (!is_visible)
    {
        IMGUI_TEST_ENGINE_ITEM_INFO(id, label, g.LastItemData.StatusFlags | ImGuiItemStatusFlags_Checkable | (*v ? ImGuiItemStatusFlags_Checked : 0));
        return false;
@ -1147,27 +1148,29 @@ bool ImGui::Checkbox(const char* label, bool* v)
    }

    const ImRect check_bb(pos, pos + ImVec2(square_sz, square_sz));
-    RenderNavHighlight(total_bb, id);
-    RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
-    ImU32 check_col = GetColorU32(ImGuiCol_CheckMark);
-    bool mixed_value = (g.LastItemData.InFlags & ImGuiItemFlags_MixedValue) != 0;
-    if (mixed_value)
+    const bool mixed_value = (g.LastItemData.InFlags & ImGuiItemFlags_MixedValue) != 0;
+    if (is_visible)
    {
-        // Undocumented tristate/mixed/indeterminate checkbox (#2644)
-        // This may seem awkwardly designed because the aim is to make ImGuiItemFlags_MixedValue supported by all widgets (not just checkbox)
-        ImVec2 pad(ImMax(1.0f, IM_TRUNC(square_sz / 3.6f)), ImMax(1.0f, IM_TRUNC(square_sz / 3.6f)));
-        window->DrawList->AddRectFilled(check_bb.Min + pad, check_bb.Max - pad, check_col, style.FrameRounding);
+        RenderNavHighlight(total_bb, id);
+        RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
+        ImU32 check_col = GetColorU32(ImGuiCol_CheckMark);
+        if (mixed_value)
+        {
+            // Undocumented tristate/mixed/indeterminate checkbox (#2644)
+            // This may seem awkwardly designed because the aim is to make ImGuiItemFlags_MixedValue supported by all widgets (not just checkbox)
+            ImVec2 pad(ImMax(1.0f, IM_TRUNC(square_sz / 3.6f)), ImMax(1.0f, IM_TRUNC(square_sz / 3.6f)));
+            window->DrawList->AddRectFilled(check_bb.Min + pad, check_bb.Max - pad, check_col, style.FrameRounding);
+        }
+        else if (*v)
+        {
+            const float pad = ImMax(1.0f, IM_TRUNC(square_sz / 6.0f));
+            RenderCheckMark(window->DrawList, check_bb.Min + ImVec2(pad, pad), check_col, square_sz - pad * 2.0f);
+        }
    }
-    else if (*v)
-    {
-        const float pad = ImMax(1.0f, IM_TRUNC(square_sz / 6.0f));
-        RenderCheckMark(window->DrawList, check_bb.Min + ImVec2(pad, pad), check_col, square_sz - pad * 2.0f);
-    }
-
-    ImVec2 label_pos = ImVec2(check_bb.Max.x + style.ItemInnerSpacing.x, check_bb.Min.y + style.FramePadding.y);
+    const ImVec2 label_pos = ImVec2(check_bb.Max.x + style.ItemInnerSpacing.x, check_bb.Min.y + style.FramePadding.y);
    if (g.LogEnabled)
        LogRenderedText(&label_pos, mixed_value ? "[~]" : *v ? "[x]" : "[ ]");
-    if (label_size.x > 0.0f)
+    if (is_visible && label_size.x > 0.0f)
        RenderText(label_pos, label);

    IMGUI_TEST_ENGINE_ITEM_INFO(id, label, g.LastItemData.StatusFlags | ImGuiItemStatusFlags_Checkable | (*v ? ImGuiItemStatusFlags_Checked : 0));
@ -1367,6 +1370,76 @@ void ImGui::Bullet()
    SameLine(0, style.FramePadding.x * 2.0f);
 }

+// This is provided as a convenience for being an often requested feature.
+// FIXME-STYLE: we delayed adding as there is a larger plan to revamp the styling system.
+// Because of this we currently don't provide many styling options for this widget
+// (e.g. hovered/active colors are automatically inferred from a single color).
+bool ImGui::TextLink(const char* label)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiID id = window->GetID(label);
+    const char* label_end = FindRenderedTextEnd(label);
+
+    ImVec2 pos = window->DC.CursorPos;
+    ImVec2 size = CalcTextSize(label, label_end, true);
+    ImRect bb(pos, pos + size);
+    ItemSize(size, 0.0f);
+    if (!ItemAdd(bb, id))
+        return false;
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
+    RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_None);
+
+    ImVec4 text_colf = g.Style.Colors[ImGuiCol_TextLink];
+    ImVec4 line_colf = text_colf;
+    {
+        // FIXME-STYLE: Read comments above. This widget is NOT written in the same style as some earlier widgets,
+        // as we are currently experimenting/planning a different styling system.
+        float h, s, v;
+        ColorConvertRGBtoHSV(text_colf.x, text_colf.y, text_colf.z, h, s, v);
+        if (held || hovered)
+        {
+            v = ImSaturate(v + (held ? 0.4f : 0.3f));
+            h = ImFmod(h + 0.02f, 1.0f);
+        }
+        ColorConvertHSVtoRGB(h, s, v, text_colf.x, text_colf.y, text_colf.z);
+        v = ImSaturate(v - 0.20f);
+        ColorConvertHSVtoRGB(h, s, v, line_colf.x, line_colf.y, line_colf.z);
+    }
+
+    float line_y = bb.Max.y + ImFloor(g.Font->Descent * g.FontScale * 0.20f);
+    window->DrawList->AddLine(ImVec2(bb.Min.x, line_y), ImVec2(bb.Max.x, line_y), GetColorU32(line_colf)); // FIXME-TEXT: Underline mode.
+
+    PushStyleColor(ImGuiCol_Text, GetColorU32(text_colf));
+    RenderText(bb.Min, label, label_end);
+    PopStyleColor();
+
+    IMGUI_TEST_ENGINE_ITEM_INFO(id, label, g.LastItemData.StatusFlags);
+    return pressed;
+}
+
+void ImGui::TextLinkOpenURL(const char* label, const char* url)
+{
+    ImGuiContext& g = *GImGui;
+    if (url == NULL)
+        url = label;
+    if (TextLink(label))
+        if (g.IO.PlatformOpenInShellFn != NULL)
+            g.IO.PlatformOpenInShellFn(&g, url);
+    SetItemTooltip("%s", url); // It is more reassuring for user to _always_ display URL when we same as label
+    if (BeginPopupContextItem())
+    {
+        if (MenuItem(LocalizeGetMsg(ImGuiLocKey_CopyLink)))
+            SetClipboardText(url);
+        EndPopup();
+    }
+}
+
 //-------------------------------------------------------------------------
 // [SECTION] Widgets: Low-level Layout helpers
 //-------------------------------------------------------------------------
@ -2057,6 +2130,7 @@ static const ImGuiDataTypeInfo GDataTypeInfo[] =
 #endif
    { sizeof(float),            "float", "%.3f","%f"    },  // ImGuiDataType_Float (float are promoted to double in va_arg)
    { sizeof(double),           "double","%f",  "%lf"   },  // ImGuiDataType_Double
+    { sizeof(bool),             "bool", "%d",   "%d"    },  // ImGuiDataType_Bool
 };
 IM_STATIC_ASSERT(IM_ARRAYSIZE(GDataTypeInfo) == ImGuiDataType_COUNT);

@ -2305,12 +2379,13 @@ bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const
 {
    ImGuiContext& g = *GImGui;
    const ImGuiAxis axis = (flags & ImGuiSliderFlags_Vertical) ? ImGuiAxis_Y : ImGuiAxis_X;
-    const bool is_clamped = (v_min < v_max);
+    const bool is_bounded = (v_min < v_max);
+    const bool is_wrapped = is_bounded && (flags & ImGuiSliderFlags_WrapAround);
    const bool is_logarithmic = (flags & ImGuiSliderFlags_Logarithmic) != 0;
    const bool is_floating_point = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);

    // Default tweak speed
-    if (v_speed == 0.0f && is_clamped && (v_max - v_min < FLT_MAX))
+    if (v_speed == 0.0f && is_bounded && (v_max - v_min < FLT_MAX))
        v_speed = (float)((v_max - v_min) * g.DragSpeedDefaultRatio);

    // Inputs accumulates into g.DragCurrentAccum, which is flushed into the current value as soon as it makes a difference with our precision settings
@ -2344,8 +2419,8 @@ bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const

    // Clear current value on activation
    // Avoid altering values and clamping when we are _already_ past the limits and heading in the same direction, so e.g. if range is 0..255, current value is 300 and we are pushing to the right side, keep the 300.
-    bool is_just_activated = g.ActiveIdIsJustActivated;
-    bool is_already_past_limits_and_pushing_outward = is_clamped && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
+    const bool is_just_activated = g.ActiveIdIsJustActivated;
+    const bool is_already_past_limits_and_pushing_outward = is_bounded && !is_wrapped && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
    if (is_just_activated || is_already_past_limits_and_pushing_outward)
    {
        g.DragCurrentAccum = 0.0f;
@ -2403,13 +2478,24 @@ bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const
    if (v_cur == (TYPE)-0)
        v_cur = (TYPE)0;

-    // Clamp values (+ handle overflow/wrap-around for integer types)
-    if (*v != v_cur && is_clamped)
+    if (*v != v_cur && is_bounded)
    {
-        if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f && !is_floating_point))
-            v_cur = v_min;
-        if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f && !is_floating_point))
-            v_cur = v_max;
+        if (is_wrapped)
+        {
+            // Wrap values
+            if (v_cur < v_min)
+                v_cur += v_max - v_min + (is_floating_point ? 0 : 1);
+            if (v_cur > v_max)
+                v_cur -= v_max - v_min + (is_floating_point ? 0 : 1);
+        }
+        else
+        {
+            // Clamp values + handle overflow/wrap-around for integer types.
+            if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f && !is_floating_point))
+                v_cur = v_min;
+            if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f && !is_floating_point))
+                v_cur = v_max;
+        }
    }

    // Apply result
@ -2422,7 +2508,7 @@ bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const
 bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* p_v, float v_speed, const void* p_min, const void* p_max, const char* format, ImGuiSliderFlags flags)
 {
    // Read imgui.cpp "API BREAKING CHANGES" section for 1.78 if you hit this assert.
-    IM_ASSERT((flags == 1 || (flags & ImGuiSliderFlags_InvalidMask_) == 0) && "Invalid ImGuiSliderFlags flags! Has the 'float power' argument been mistakenly cast to flags? Call function with ImGuiSliderFlags_Logarithmic flags instead.");
+    IM_ASSERT((flags == 1 || (flags & ImGuiSliderFlags_InvalidMask_) == 0) && "Invalid ImGuiSliderFlags flags! Has the legacy 'float power' argument been mistakenly cast to flags? Call function with ImGuiSliderFlags_Logarithmic flags instead.");

    ImGuiContext& g = *GImGui;
    if (g.ActiveId == id)
@ -3015,7 +3101,8 @@ bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_typ
 bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* p_v, const void* p_min, const void* p_max, const char* format, ImGuiSliderFlags flags, ImRect* out_grab_bb)
 {
    // Read imgui.cpp "API BREAKING CHANGES" section for 1.78 if you hit this assert.
-    IM_ASSERT((flags == 1 || (flags & ImGuiSliderFlags_InvalidMask_) == 0) && "Invalid ImGuiSliderFlags flag!  Has the 'float power' argument been mistakenly cast to flags? Call function with ImGuiSliderFlags_Logarithmic flags instead.");
+    IM_ASSERT((flags == 1 || (flags & ImGuiSliderFlags_InvalidMask_) == 0) && "Invalid ImGuiSliderFlags flags! Has the legacy 'float power' argument been mistakenly cast to flags? Call function with ImGuiSliderFlags_Logarithmic flags instead.");
+    IM_ASSERT((flags & ImGuiSliderFlags_WrapAround) == 0); // Not supported by SliderXXX(), only by DragXXX()

    switch (data_type)
    {
@ -3762,7 +3849,7 @@ namespace ImStb

 static int     STB_TEXTEDIT_STRINGLEN(const ImGuiInputTextState* obj)                             { return obj->CurLenW; }
 static ImWchar STB_TEXTEDIT_GETCHAR(const ImGuiInputTextState* obj, int idx)                      { IM_ASSERT(idx <= obj->CurLenW); return obj->TextW[idx]; }
-static float   STB_TEXTEDIT_GETWIDTH(ImGuiInputTextState* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx + char_idx]; if (c == '\n') return IMSTB_TEXTEDIT_GETWIDTH_NEWLINE; ImGuiContext& g = *obj->Ctx; return g.Font->GetCharAdvance(c) * (g.FontSize / g.Font->FontSize); }
+static float   STB_TEXTEDIT_GETWIDTH(ImGuiInputTextState* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx + char_idx]; if (c == '\n') return IMSTB_TEXTEDIT_GETWIDTH_NEWLINE; ImGuiContext& g = *obj->Ctx; return g.Font->GetCharAdvance(c) * g.FontScale; }
 static int     STB_TEXTEDIT_KEYTOTEXT(int key)                                                    { return key >= 0x200000 ? 0 : key; }
 static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
 static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, ImGuiInputTextState* obj, int line_start_idx)
@ -4196,7 +4283,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
        PushStyleVar(ImGuiStyleVar_ChildRounding, style.FrameRounding);
        PushStyleVar(ImGuiStyleVar_ChildBorderSize, style.FrameBorderSize);
        PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0, 0)); // Ensure no clip rect so mouse hover can reach FramePadding edges
-        bool child_visible = BeginChildEx(label, id, frame_bb.GetSize(), true, ImGuiWindowFlags_NoMove);
+        bool child_visible = BeginChildEx(label, id, frame_bb.GetSize(), ImGuiChildFlags_Border, ImGuiWindowFlags_NoMove);
        g.NavActivateId = backup_activate_id;
        PopStyleVar(3);
        PopStyleColor();
@ -6108,7 +6195,8 @@ bool ImGui::TreeNode(const char* label)
    ImGuiWindow* window = GetCurrentWindow();
    if (window->SkipItems)
        return false;
-    return TreeNodeBehavior(window->GetID(label), 0, label, NULL);
+    ImGuiID id = window->GetID(label);
+    return TreeNodeBehavior(id, id, ImGuiTreeNodeFlags_None, label, NULL);
 }

 bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args)
@ -6126,8 +6214,8 @@ bool ImGui::TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags)
    ImGuiWindow* window = GetCurrentWindow();
    if (window->SkipItems)
        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags, label, NULL);
+    ImGuiID id = window->GetID(label);
+    return TreeNodeBehavior(id, id, flags, label, NULL);
 }

 bool ImGui::TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
@ -6154,9 +6242,10 @@ bool ImGui::TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char
    if (window->SkipItems)
        return false;

+    ImGuiID id = window->GetID(str_id);
    const char* label, *label_end;
    ImFormatStringToTempBufferV(&label, &label_end, fmt, args);
-    return TreeNodeBehavior(window->GetID(str_id), flags, label, label_end);
+    return TreeNodeBehavior(id, id, flags, label, label_end);
 }

 bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
@ -6165,24 +6254,32 @@ bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char
    if (window->SkipItems)
        return false;

+    ImGuiID id = window->GetID(ptr_id);
    const char* label, *label_end;
    ImFormatStringToTempBufferV(&label, &label_end, fmt, args);
-    return TreeNodeBehavior(window->GetID(ptr_id), flags, label, label_end);
+    return TreeNodeBehavior(id, id, flags, label, label_end);
 }

-void ImGui::TreeNodeSetOpen(ImGuiID id, bool open)
+bool ImGui::TreeNodeGetOpen(ImGuiID storage_id)
 {
    ImGuiContext& g = *GImGui;
    ImGuiStorage* storage = g.CurrentWindow->DC.StateStorage;
-    storage->SetInt(id, open ? 1 : 0);
+    return storage->GetInt(storage_id, 0) != 0;
 }

-bool ImGui::TreeNodeUpdateNextOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
+void ImGui::TreeNodeSetOpen(ImGuiID storage_id, bool open)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiStorage* storage = g.CurrentWindow->DC.StateStorage;
+    storage->SetInt(storage_id, open ? 1 : 0);
+}
+
+bool ImGui::TreeNodeUpdateNextOpen(ImGuiID storage_id, ImGuiTreeNodeFlags flags)
 {
    if (flags & ImGuiTreeNodeFlags_Leaf)
        return true;

-    // We only write to the tree storage if the user clicks (or explicitly use the SetNextItemOpen function)
+    // We only write to the tree storage if the user clicks, or explicitly use the SetNextItemOpen function
    ImGuiContext& g = *GImGui;
    ImGuiWindow* window = g.CurrentWindow;
    ImGuiStorage* storage = window->DC.StateStorage;
@ -6193,16 +6290,16 @@ bool ImGui::TreeNodeUpdateNextOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
        if (g.NextItemData.OpenCond & ImGuiCond_Always)
        {
            is_open = g.NextItemData.OpenVal;
-            TreeNodeSetOpen(id, is_open);
+            TreeNodeSetOpen(storage_id, is_open);
        }
        else
        {
            // We treat ImGuiCond_Once and ImGuiCond_FirstUseEver the same because tree node state are not saved persistently.
-            const int stored_value = storage->GetInt(id, -1);
+            const int stored_value = storage->GetInt(storage_id, -1);
            if (stored_value == -1)
            {
                is_open = g.NextItemData.OpenVal;
-                TreeNodeSetOpen(id, is_open);
+                TreeNodeSetOpen(storage_id, is_open);
            }
            else
            {
@ -6212,7 +6309,7 @@ bool ImGui::TreeNodeUpdateNextOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
    }
    else
    {
-        is_open = storage->GetInt(id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
+        is_open = storage->GetInt(storage_id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
    }

    // When logging is enabled, we automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior).
@ -6223,7 +6320,24 @@ bool ImGui::TreeNodeUpdateNextOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
    return is_open;
 }

-bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
+// Store ImGuiTreeNodeStackData for just submitted node.
+// Currently only supports 32 level deep and we are fine with (1 << Depth) overflowing into a zero, easy to increase.
+static void TreeNodeStoreStackData(ImGuiTreeNodeFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    g.TreeNodeStack.resize(g.TreeNodeStack.Size + 1);
+    ImGuiTreeNodeStackData* tree_node_data = &g.TreeNodeStack.back();
+    tree_node_data->ID = g.LastItemData.ID;
+    tree_node_data->TreeFlags = flags;
+    tree_node_data->InFlags = g.LastItemData.InFlags;
+    tree_node_data->NavRect = g.LastItemData.NavRect;
+    window->DC.TreeHasStackDataDepthMask |= (1 << window->DC.TreeDepth);
+}
+
+// When using public API, currently 'id == storage_id' is always true, but we separate the values to facilitate advanced user code doing storage queries outside of UI loop.
+bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiID storage_id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
 {
    ImGuiWindow* window = GetCurrentWindow();
    if (window->SkipItems)
@ -6276,7 +6390,7 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
    }

    // Compute open and multi-select states before ItemAdd() as it clear NextItem data.
-    bool is_open = TreeNodeUpdateNextOpen(id, flags);
+    bool is_open = TreeNodeUpdateNextOpen(storage_id, flags);
    bool item_add = ItemAdd(interact_bb, id);
    g.LastItemData.StatusFlags |= ImGuiItemStatusFlags_HasDisplayRect;
    g.LastItemData.DisplayRect = frame_bb;
@ -6291,21 +6405,19 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
    // Store data for the current depth to allow returning to this node from any child item.
    // For this purpose we essentially compare if g.NavIdIsAlive went from 0 to 1 between TreeNode() and TreePop().
    // It will become tempting to enable ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default or move it to ImGuiStyle.
-    // Currently only supports 32 level deep and we are fine with (1 << Depth) overflowing into a zero, easy to increase.
-    if (is_open && !g.NavIdIsAlive && (flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
-        {
-            g.NavTreeNodeStack.resize(g.NavTreeNodeStack.Size + 1);
-            ImGuiNavTreeNodeData* nav_tree_node_data = &g.NavTreeNodeStack.back();
-            nav_tree_node_data->ID = id;
-            nav_tree_node_data->InFlags = g.LastItemData.InFlags;
-            nav_tree_node_data->NavRect = g.LastItemData.NavRect;
-            window->DC.TreeJumpToParentOnPopMask |= (1 << window->DC.TreeDepth);
-        }
+    bool store_tree_node_stack_data = false;
+    if (!(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
+    {
+        if ((flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && is_open && !g.NavIdIsAlive)
+            if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
+                store_tree_node_stack_data = true;
+    }

    const bool is_leaf = (flags & ImGuiTreeNodeFlags_Leaf) != 0;
    if (!item_add)
    {
+        if (store_tree_node_stack_data && is_open)
+            TreeNodeStoreStackData(flags); // Call before TreePushOverrideID()
        if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
            TreePushOverrideID(id);
        IMGUI_TEST_ENGINE_ITEM_INFO(g.LastItemData.ID, label, g.LastItemData.StatusFlags | (is_leaf ? 0 : ImGuiItemStatusFlags_Openable) | (is_open ? ImGuiItemStatusFlags_Opened : 0));
@ -6390,7 +6502,7 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
        if (toggled)
        {
            is_open = !is_open;
-            window->DC.StateStorage->SetInt(id, is_open);
+            window->DC.StateStorage->SetInt(storage_id, is_open);
            g.LastItemData.StatusFlags |= ImGuiItemStatusFlags_ToggledOpen;
        }
    }
@ -6416,7 +6528,6 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
            text_pos.x -= text_offset_x -padding.x;
        if (flags & ImGuiTreeNodeFlags_ClipLabelForTrailingButton)
            frame_bb.Max.x -= g.FontSize + style.FramePadding.x;
-
        if (g.LogEnabled)
            LogSetNextTextDecoration("###", "###");
    }
@ -6446,8 +6557,11 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
    else
        RenderText(text_pos, label, label_end, false);

+    if (store_tree_node_stack_data && is_open)
+        TreeNodeStoreStackData(flags); // Call before TreePushOverrideID()
    if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        TreePushOverrideID(id);
+        TreePushOverrideID(id); // Could use TreePush(label) but this avoid computing twice
+
    IMGUI_TEST_ENGINE_ITEM_INFO(id, label, g.LastItemData.StatusFlags | (is_leaf ? 0 : ImGuiItemStatusFlags_Openable) | (is_open ? ImGuiItemStatusFlags_Opened : 0));
    return is_open;
 }
@ -6486,16 +6600,19 @@ void ImGui::TreePop()
    window->DC.TreeDepth--;
    ImU32 tree_depth_mask = (1 << window->DC.TreeDepth);

-    // Handle Left arrow to move to parent tree node (when ImGuiTreeNodeFlags_NavLeftJumpsBackHere is enabled)
-    if (window->DC.TreeJumpToParentOnPopMask & tree_depth_mask) // Only set during request
+    if (window->DC.TreeHasStackDataDepthMask & tree_depth_mask) // Only set during request
    {
-        ImGuiNavTreeNodeData* nav_tree_node_data = &g.NavTreeNodeStack.back();
-        IM_ASSERT(nav_tree_node_data->ID == window->IDStack.back());
-        if (g.NavIdIsAlive && g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
-            NavMoveRequestResolveWithPastTreeNode(&g.NavMoveResultLocal, nav_tree_node_data);
-        g.NavTreeNodeStack.pop_back();
+        ImGuiTreeNodeStackData* data = &g.TreeNodeStack.back();
+        IM_ASSERT(data->ID == window->IDStack.back());
+        if (data->TreeFlags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere)
+        {
+            // Handle Left arrow to move to parent tree node (when ImGuiTreeNodeFlags_NavLeftJumpsBackHere is enabled)
+            if (g.NavIdIsAlive && g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
+                NavMoveRequestResolveWithPastTreeNode(&g.NavMoveResultLocal, data);
+        }
+        g.TreeNodeStack.pop_back();
+        window->DC.TreeHasStackDataDepthMask &= ~tree_depth_mask;
    }
-    window->DC.TreeJumpToParentOnPopMask &= tree_depth_mask - 1;

    IM_ASSERT(window->IDStack.Size > 1); // There should always be 1 element in the IDStack (pushed during window creation). If this triggers you called TreePop/PopID too much.
    PopID();
@ -6526,8 +6643,8 @@ bool ImGui::CollapsingHeader(const char* label, ImGuiTreeNodeFlags flags)
    ImGuiWindow* window = GetCurrentWindow();
    if (window->SkipItems)
        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
+    ImGuiID id = window->GetID(label);
+    return TreeNodeBehavior(id, id, flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
 }

 // p_visible == NULL                        : regular collapsing header
@ -6547,7 +6664,7 @@ bool ImGui::CollapsingHeader(const char* label, bool* p_visible, ImGuiTreeNodeFl
    flags |= ImGuiTreeNodeFlags_CollapsingHeader;
    if (p_visible)
        flags |= ImGuiTreeNodeFlags_AllowOverlap | (ImGuiTreeNodeFlags)ImGuiTreeNodeFlags_ClipLabelForTrailingButton;
-    bool is_open = TreeNodeBehavior(id, flags, label);
+    bool is_open = TreeNodeBehavior(id, id, flags, label);
    if (p_visible != NULL)
    {
        // Create a small overlapping close button
@ -6631,7 +6748,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
    }

    const bool disabled_item = (flags & ImGuiSelectableFlags_Disabled) != 0;
-    const bool item_add = ItemAdd(bb, id, NULL, disabled_item ? ImGuiItemFlags_Disabled : ImGuiItemFlags_None);
+    const bool item_add = ItemAdd(bb, id, NULL, disabled_item ? (ImGuiItemFlags)ImGuiItemFlags_Disabled : ImGuiItemFlags_None);
    if (span_all_columns)
    {
        window->ClipRect.Min.x = backup_clip_rect_min_x;
@ -6717,7 +6834,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
    RenderTextClipped(text_min, text_max, label, NULL, &label_size, style.SelectableTextAlign, &bb);

    // Automatically close popups
-    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(g.LastItemData.InFlags & ImGuiItemFlags_SelectableDontClosePopup))
+    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_NoAutoClosePopups) && (g.LastItemData.InFlags & ImGuiItemFlags_AutoClosePopups))
        CloseCurrentPopup();

    if (disabled_item && !disabled_global)
@ -7545,7 +7662,7 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
    bool pressed;

    // We use ImGuiSelectableFlags_NoSetKeyOwner to allow down on one menu item, move, up on another.
-    const ImGuiSelectableFlags selectable_flags = ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_NoSetKeyOwner | ImGuiSelectableFlags_SelectOnClick | ImGuiSelectableFlags_DontClosePopups;
+    const ImGuiSelectableFlags selectable_flags = ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_NoSetKeyOwner | ImGuiSelectableFlags_SelectOnClick | ImGuiSelectableFlags_NoAutoClosePopups;
    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
    {
        // Menu inside an horizontal menu bar
@ -7921,7 +8038,9 @@ bool    ImGui::BeginTabBar(const char* str_id, ImGuiTabBarFlags flags)
    tab_bar->ID = id;
    tab_bar->SeparatorMinX = tab_bar->BarRect.Min.x - IM_TRUNC(window->WindowPadding.x * 0.5f);
    tab_bar->SeparatorMaxX = tab_bar->BarRect.Max.x + IM_TRUNC(window->WindowPadding.x * 0.5f);
-    return BeginTabBarEx(tab_bar, tab_bar_bb, flags | ImGuiTabBarFlags_IsFocused);
+    //if (g.NavWindow && IsWindowChildOf(g.NavWindow, window, false, false))
+    flags |= ImGuiTabBarFlags_IsFocused;
+    return BeginTabBarEx(tab_bar, tab_bar_bb, flags);
 }

 bool    ImGui::BeginTabBarEx(ImGuiTabBar* tab_bar, const ImRect& tab_bar_bb, ImGuiTabBarFlags flags)
@ -7975,7 +8094,7 @@ bool    ImGui::BeginTabBarEx(ImGuiTabBar* tab_bar, const ImRect& tab_bar_bb, ImG

    // Draw separator
    // (it would be misleading to draw this in EndTabBar() suggesting that it may be drawn over tabs, as tab bar are appendable)
-    const ImU32 col = GetColorU32((flags & ImGuiTabBarFlags_IsFocused) ? ImGuiCol_TabActive : ImGuiCol_TabUnfocusedActive);
+    const ImU32 col = GetColorU32((flags & ImGuiTabBarFlags_IsFocused) ? ImGuiCol_TabSelected : ImGuiCol_TabDimmedSelected);
    if (g.Style.TabBarBorderSize > 0.0f)
    {
        const float y = tab_bar->BarRect.Max.y;
@ -8835,8 +8954,16 @@ bool    ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,

    // Render tab shape
    ImDrawList* display_draw_list = window->DrawList;
-    const ImU32 tab_col = GetColorU32((held || hovered) ? ImGuiCol_TabHovered : tab_contents_visible ? (tab_bar_focused ? ImGuiCol_TabActive : ImGuiCol_TabUnfocusedActive) : (tab_bar_focused ? ImGuiCol_Tab : ImGuiCol_TabUnfocused));
+    const ImU32 tab_col = GetColorU32((held || hovered) ? ImGuiCol_TabHovered : tab_contents_visible ? (tab_bar_focused ? ImGuiCol_TabSelected : ImGuiCol_TabDimmedSelected) : (tab_bar_focused ? ImGuiCol_Tab : ImGuiCol_TabDimmed));
    TabItemBackground(display_draw_list, bb, flags, tab_col);
+    if (tab_contents_visible && (tab_bar->Flags & ImGuiTabBarFlags_DrawSelectedOverline))
+    {
+        float x_offset = IM_TRUNC(0.4f * style.TabRounding);
+        if (x_offset < 2.0f * g.CurrentDpiScale)
+            x_offset = 0.0f;
+        float y_offset = 1.0f * g.CurrentDpiScale;
+        display_draw_list->AddLine(bb.GetTL() + ImVec2(x_offset, y_offset), bb.GetTR() + ImVec2(-x_offset, y_offset), GetColorU32(tab_bar_focused ? ImGuiCol_TabSelectedOverline : ImGuiCol_TabDimmedSelectedOverline), 2.0f * g.CurrentDpiScale);
+    }
    RenderNavHighlight(bb, id);

    // Select with right mouse button. This is so the common idiom for context menu automatically highlight the current widget.
--- a/external/imgui/imgui/misc/freetype/imgui_freetype.cpp
+++ b/external/imgui/imgui/misc/freetype/imgui_freetype.cpp
@ -357,7 +357,7 @@ namespace
        case FT_PIXEL_MODE_BGRA:
            {
                // FIXME: Converting pre-multiplied alpha to straight. Doesn't smell good.
-                #define DE_MULTIPLY(color, alpha) (ImU32)(255.0f * (float)color / (float)alpha + 0.5f)
+                #define DE_MULTIPLY(color, alpha) ImMin((ImU32)(255.0f * (float)color / (float)(alpha + FLT_MIN) + 0.5f), 255u)
                if (multiply_table == nullptr)
                {
                    for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)