tomato/backends/imgui_impl_sdlrenderer3.cpp
Green Sky b8ca49f7dc Squashed 'external/imgui/imgui/' changes from cb16568fca5..5c1d2d1e4c5
5c1d2d1e4c5 Version 1.91.7
9f8481a842e (Breaking) TreeNode: renamed ImGuiTreeNodeFlags_SpanTextWidth to ImGuiTreeNodeFlags_SpanLabelWidth. (#6937)
21902e2f536 Backends: SDL_GPU: fixed SDL_GPUViewport initialisation. (#8163, #7998, #7988)
c38c18c1a07 Avoid using 1<<31 for ImGuiWindowFlags_NavFlattened as it seems to confuse some binding generators.
c5f60942bdd Demo: tweak demo for ImGuiTreeNodeFlags_LabelSpanAllColumns. (#8318, #3565)
290e402a020 TreeNode, Tables: added ImGuiTreeNodeFlags_LabelSpanAllColumns. (#8318, #3565)
6fb7d442559 Backends: SDL2/SDL3: Comments. (#7672, #7670)
32cea853317 Debug Tools:  Item Picker: Always available in menu. Tweak Demo Debug Options. (#2673, #1651)
00f12b9a09d InputText: Fixed not calling CallbackEdit on revert/clear with Escape key. (#8273) + rework comments.
a604d4f717b Fixed IsItemDeactivated(), IsItemDeactivatedAfterEdit() to work when interrupted before/after the active id is submitted. (#5184, #5904, #6766, #8303, #8004)
a28ffa81c4a Docs: added more references to IsKeyDown(), InFlags. (#8317)
1d962820d8b Error Handling: Turned common EndTable() and other TableXXX functions fail cases into recoverable errors. (#1651, #8314)
0b8ff4b2382 Backends, Examples: Vulkan: add IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE. use in descriptor pools sizes. (#6642)
e7fb97208a8 Backends: Metal: Added missing IM_UNUSED (#8302)
596e09770d3 Backends: SDL3: Added ImGui_ImplSDL3_InitForSDLGPU() for consistency. (#8163, #7998, #7988)
e7998492726 Backends: SDLGPU3: Added sdl_gpu backend (amends). (#8163, #7998, #7988)
8bbccf7a977 Backends: SDLGPU3: Added sdl_gpu backend. (#8163, #7998, #7988)
940d9540f3f Fixed MinGW builds uses UTF-8 friendly _wfopen(). (#8300)
c7983115e9f Fonts: Further tweaks for Ellipsis ("...") character width when automatically created from a single comma character: use AdvanceX as min.
90094a871a5 Fonts: Fixed miscalculation of Ellipsis ("...") character width when automatically created from a single comma character.
1c67a3412e1 BeginChild: also caller to manually set ImGuiNextWindowDataFlags_HasChildFlags / ChildFlags. (#8280)
2b8545684ca Refactor: moved Window Focus related functions to a dedicated section.
bbbdc70f26b Refactor: moved FindBlockingModal() in its section.
e6a7c7689f5 Backends: Metal: Fixed memory leaks. (#8276, #8166)
0514332474f Avoid clang/gcc warnings: -Wnontrivial-memaccess in backends. (#8295, #8129, #8135)
3115ae08159 Demo: Font selector combo sets default focus.
cec8ff1885d Backends: Vulkan: Fixed building with using VK_NO_PROTOTYPES. (#8180)
f04d3cbdaaf Backends: DirectX10: Expose selected render state in ImGui_ImplDX10_RenderState, which you can access in 'void* platform_io.Renderer_RenderState' during draw callbacks. (#6969, #5834, #7468, #3590)
af271e73303 Backends: DX11: Expose vertex constant buffer in ImGui_ImplDX11_RenderState.
93a93071a27 Examples: Add Win32+Vulkan example, amends. (#8180)
38e606a153b Examples: Add Win32+Vulkan example. (#8180)
a2e21727c01 Backends: Vulkan: moved helpers to backend: ImGui_ImplVulkanH_SelectPhysicalDevice(), ImGui_ImplVulkanH_SelectQueueFamilyIndex(). (#8180)
dbf76f62f9e Update issue_template.yml
e7e898ea179 Tables: Fixed TableAngledHeadersRow() creating an infinite horizontal scrolling region when the table is hosted in a viewport with negative coordinates.
d0021e16215 Backends: Metal: Fixed resource leak when using multiple contexts. (#7419)
2f1194a2961 Demo: Added label edition to Property Editor demo + fix an ID issue. (#8266)
80aafbc81b0 Data types: moved ImGuiDataType_String to public API as a convenience enum value only. (#8266)
f169102c8ea Misc: fixed misc/cpp/imgui_stdlib.h/.cpp not supporting IMGUI_DISABLE. (#8294)
a0f907933d8 Happy new year!
c147a59bb0e Clarified alternative for ImGuiButtonFlags_Repeat being ImGuiItemFlags_ButtonRepeat. (#8293)
2d2c7d3f955 Backends: Allegro5: Avoid calling al_set_mouse_cursor() repeatedly since it appears to leak on on X11 (#8256).
87f3109c1af Fix capitalization of ImGuiID in comment. (#8283)
6982ce43f5b InputText: fixed badly broken clipboard copy/bug (#8254, #8242)
18929bd6d6c Internals: merge ScaleWindowsInViewport() from docking branch.
2a600bddcbe ImGuiDebugLogFlags_EventFont should not be set by default (had no effect on master tho)
006721fbd6b Added ImFontAtlas section index in comments + minor tweaks to DX12 backends.
7219fa65c02 Revert "Fonts: Allowing PushFont()/PopFont() to be called outside the imgui frame scope. (#3621)"
61d4bf95dc5 Fonts: Allowing PushFont()/PopFont() to be called outside the imgui frame scope. (#3621)
d30e102f3ad Scrollbar, TestEngine: for consistency, scrollbars are registered in _Menu layer.
91e8f2b0feb Debug Tools: Debug Log: hovering 0xXXXXXXXX values in log is allowed even if a popup is blocking mouse access to the debug log window. (#5855)
eed95027956 Error Handling: Fixed bugs recovering from within a table that created a child window, and from nested child windows. (#1651)
fd932297703 Tables, MultiSelect: Fixed an issue where column width may be mismeasured when calling BeginMultiSelect() while inside a table. (#8250)
9b0e61aaaa7 InputText: sanity checks to e.g. detect non zero-terminated buffers + removed a redundant strlen() call during activation.
ae839620b96 Docs: Updated EXAMPLES.md (#8246)
457fae24e7a Silence more zealous GCC warning. (#8241)
cd6c83cdccb Fixes GCC warnings (#8241)
32f11402f96 InputText: use TextSrc more consistently to facilitate accessing user buffer in text processing code. (#8242)
e900571ac24 InputText: Fixed issue when activating a ReadOnly field when the underlying value is being modified. (#8242)
f31d53093b5 TestEngine: for consistency, title bar / window items are registered in _Menu layer.
13c4084362b Nav: Fixed an issue where Alt key would clear current active item on windows with the ImGuiWindowFlags_NoNavInputs flag. (#8231)
f5f11e94be3 InputText: Fixed a bug where character replacements performed from a callback were not applied when pasting from clipbard. (#8229)
324d4bb1402 InputText: calling ReloadUserBuf doesn't clear undo stack. (#2890)
8237ab450e3 Drags, Sliders: store initial value on activation, as a convenience for some mods. (#8223)
4ad5496474b Drags: Added ImGuiSliderFlags_NoSpeedTweaks flag to disable keyboard modifiers altering the tweak speed. (#8223)
f9f4e22f6f7 InputText: some tidying up. (#7925)
4cc464eadc1 BeginListBox(): Comments (#8220)
1d069cf4352 Fonts: store 0 for unset EllipsisChar/FallbackChar. Pull config in BuildLookupTable().
e487eb9da08 Backends: Vulkan: Fixed setting VkSwapchainCreateInfoKHR::preTransform for platforms not supporting VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR. (#8222)
f25665f3600 Version 1.91.7 WIP
993fa347495 Version 1.91.6
2ca83f0bc72 Fixed missing symbols when using IMGUI_DISABLE_DEMO_WINDOWS (e.g. with ImPlot) (#8221)
c3ffd4c53e9 Misc: Added IMGUI_USE_LEGACY_CRC32_ADLER to use old tables. (#8169, #4933)
d78e823449f InputText: added ImGuiInputTextFlags_ElideLeft. (#1442, #1440, #4391, #7208, #8216)
d2645423de8 InputText: reactivating last activated InputText() doesn't restore horizontal scrolling.
f3147f446a7 Backends: OpenGL3: call glGetString(GL_VERSION) even in GS ES 2.0 path. (#8197)
921c22f5adc Examples: GLFW+OpenGL3, SDL3+OpenGL3: Provide ES3 context creation code + failure handling. (#8197)
6b348622bb8 Examples: SDL2+OpenGL3: Provide ES3 context creation code + failure handling. (#8197)
fce07bb1cb4 Don't enable SSE4 under Emscripten - Fix. (#8213, #8169, #4933)
53dd7552dcb Backends: DX12: let the user specifies the DepthStencilView format. (#8217)
2671f68f7f8 Don't enable SSE4 under Emscripten (#8213, #8169, #4933)
3f3c62a3c99 ScrollbarEx: clarify use of flags and make them optional. (#8215)
18e5d769fd7 Backends: DX10: create sampler outside of ImGui_ImplDX11_CreateFontsTexture().
43fbd7ce840 Backends: standardized top of file comments.
566558b17c5 Replacing NULL with nullptr in examples/backends when they creeped back. (#6313, #7071, #4537)
6f6ac84228a Demo: Assets Browser: use correct axis for layout computation, to allow making items non-square. (#8207)
70b6ba42402 Clarify that IMGUI_USE_BGRA_PACKED_COLOR requires backend support. (#8201)
923ca4765a8 Backends: OpenGL3: Fix compile error with IMGUI_IMPL_OPENGL_ES2 and IMGUI_IMPL_OPENGL_DEBUG (#8197)
43c51eb12d1 Tables: fixed SetNextWindowScroll() value being ignored by BeginTable() during the first frame or when scrolling flags have changed. (#8196)
ee2119d7cbe imgui_freetype: Fix build broken by 19a1f2a (#8107)
19a1f2a5d2c Fonts: fixed AddCustomRect() not being packed with TexGlyphPadding + not accounted in surface area. (#8107)
9b26743c6b3 SliderAngle: only write back to value v_rad on value_changed. (#8193)
dda7672008e Backends: Vulkan: removed sizeof(ImTextureID) check.
c1123fd8d05 Backends: Vulkan: small refactor to use a texture struct.
90dd510df1e Backends: DX11: create sampler outside of ImGui_ImplDX11_CreateFontsTexture().
96877eb9c30 Backends: Vulkan: fixed build with VK_NO_PROTOTYPES. (#8172, #4867)
2d660108b27 Misc: amend crc32 to use _mm_crc32_u32. (#8169, #4933)
326dc95f9c7 Misc: use native crc32 instructions on SEE 4.2 targets. (#8169, #4933)
e6dd8f626a1 Misc: changed CRC32 table to use crc32c polynomial in order to be compatible with SSE 4.2 instructions. (#8169, #4933)
61ab94d5534 Backends: Vulkan: Make descriptor pool optional (#8172, #4867)
9b273294377 Comments on ImageButton(). (#8165) + comments on Emscripten -sSINGLE_FILE option. (#8153)
5b7feebfd8f Backends: DX9: extract RGBA convert loop as we are going to need it more often.
dfbf1b4f6b1 Backends: DX9: cache result of ImGui_ImplDX9_CheckFormatSupport() as we are going to need it more often.
20360e00ceb Merge miscellaneous small changes to reduce drift with texture update branch.
551b6c4d662 Tools: binary_to_compressed_c: added -u8/-u32/-base85 export options.
d0e870aad2c Misc: changed embedded ProggyClean encoding to save a bit of binary space (~12kb to 9.5kb). (#8161)
5ae3dd52a07 Fonts: added IMGUI_DISABLE_DEFAULT_FONT macro. (#8161)
eb0ad66d88d Demo: example tree used by Property Editor & Selection demos properly freed on app closure. (#8158)
142827f7d86 Backends: DX12: rework legacy path for handling ImGui_ImplDX12_Init() being called with space for a single descriptor.
08400f5be7f Backends: DX12: tidying up, added a ImGui_ImplDX12_Texture helper struct.
40b2286d16e (Breaking) Backends: DX12: changed ImGui_ImplDX12_Init() signature. Added ImGui_ImplDX12_InitInfo. Added support for Srv allocators.
3260ea69545 Examples: Win32+DX12: Tweaks.
8be0723fb7a Amend Changelog to better document how changing button behavior of InputInt/InputFloat step buttons affected some mis-uses (#8149)
e97b97467e4 Error Handling: fixed cases where recoverable error handling would crash. (#1651)
3381ab423b3 Version 1.91.6 WIP + fixed typo in tooltip.
f401021d5a5 Version 1.91.5
31b967f098d Fix 01d27a4 (sorry I cherry-picked from wrong branch)
01d27a4acde Internals: added IM_LIKELY(), IM_UNLIKELY() helper macros (yet unused). Added ImFontGetCharAdvanceX() macro.
419a9ada16e Ignore clang warning Wnontrivial-memaccess (#8129, #8135)
17bd417a3d1 AddCustomRectFontGlyph: added storage for Colored bool in ImFontAtlasCustomRect. (#8133)
3b683927ee6 imgui_freetype: Fixed a crash in build font atlas when using merged fonts and the first font in a merged set has no loaded glyph. (#8081)
3543dfda953 Docs: document removal of ImFont const qualifier as potentially breaking.
d97bbf19042 Tabs, Style: made ImGuiCol_TabDimmedSelectedOverline alpha 0 (not visible) in default styles.
df0776e931d (Breaking) Removed ImGuiKey_COUNT. (#4921)
738d6db3e6b (Breaking) Removed used of ImGuiKey_KeysData_SIZE, ImGuiKey_KeysData_OFFSET. (#4921)
6f287dd16d5 (Breaking) Removed pre-1.87 obsolete io.KeyMap[], io.KeysDown[], io.NavInputs[]. Remove IMGUI_DISABLE_OBSOLETE_KEYIO. (#4921)
57ab2b42260 Fixed unused function warning (#8130)
ec2f1d69c8d Docs: word-wrap some the older changelogs.
63234f8dd0a InputText: Internals: rename CurLenA->TextLen, InitialTextA->TextToRevertTo.
be2d006e2e7 Align warning blocks. Removed -Wunused-function, -Wmissing-prototypes from imgui_internal.h
88e232739bc Ignore clang warning Wnontrivial-memaccess (#8129)
d4791f1bbef Fixed a comment typo. (#8128)
82d0584e7bb InputText: using CurLenA instead of TextA.Size for correctness. (#7925)
75f83de52ab InputText: fixed a bug (regression in 1.91.2) where modifying text buffer within a callback would sometimes prevents further appending to the buffer. (#7925)
f77d22837c0 Examples: Android+OpenGL: Using ALooper_pollOnce() instead of ALooper_pollAll(). (#8013)
71c77c081ac Demo: added a "Windows" section.
772ca9e9a9d Log/Capture: added experimental io.ConfigWindowsCopyContentsWithCtrlC config option.
f37a9a27e58 Log/Capture: reworked scope + decorating menus, tabs.
a4fcc93f4af Log/Capture: renaming ImGuiLogType to ImGuiLogFlags
9a0dff1bc56 Buttons: using ImGuiItemFlags_ButtonRepeat makes default button behavior use PressedOnClick instead of PressedOnClickRelease when unspecified.
0bde57c25a9 Font, Misc: remove qualifier from most font functions.
3b8c7d0326d Backends: Win32: rework to add ImGui_ImplWin32_WndProcHandlerEx() not using current context (experimental). (#8069, #6293, #5856, #586)
d67e2eea1a0 Backends: Win32: internal rename.
81b689b9693 Backends: OpenGL3: added additional debug GL_CALL enclosure for glCreateShader() calls. (#8104)
81cfe096578 Selectable, Style: selected Selectable() use _Header color instead of an arbitrary lerp between _Header and _HeaderHovered. (#8106, #1861)
ccb6646baea Examples: added SDL3+Vulkan example. (#8084, #8085)
1039b7f543c Examples: added more build_win64.bat helpers.
a908d73c16a Backends: avoid missing -Wmissing-declaration warning.  (#8087, #7997)
b4033b37ad7 Backends: WGPU: update for Dawn WGPU String usage. (#8082, #8083)
a855bd8df3c Backends: SDL2: Replace SDL_Vulkan_GetDrawableSize() forward declaration with the actual include. (#8095, #7967, #3190)
06092a9756b Backends: SDL2, SDL3: SDL_EVENT_MOUSE_WHEEL event doesn't require dividing by 100.0f on Emscripten. (#4019, #6096, #1463)
062e580436e Fixed copy/paste error in DebugModeWindow() (#8094)
4994e75852a Backends: DX12: Unmap() call specify written range.
41f02825fc5 Version 1.91.5 WIP
99109c0b3b0 Amend Changelog, oops didn't get it in the previous commit.
83b64b8be22 Version 1.91.4
ab9ce2a927a Nav: added io.ConfigNavCursorVisibleAuto, io.ConfigNavCursorVisibleAlways. (#1074, #2048, #7237, #8059, #3200, #787)
3982cb35dcf Nav, Docs: consistently use "keyboard/gamepad" instead of sometimes "gamepad/keyboard".
1ff9768aa30 Nav: (Breaking) renamed ImGuiCol_NavHighlight to ImGuiCol_NavCursor. (#1074, #2048, #7237, #8059, #1712, #7370, #787)
634a7ed9886 Nav: added SetNavCursorVisible(). (#1074, #2048, #7237, #8059)
0bae2db77fd Internals: (Breaking) renamed NavDisableMouseHover to NavHighlightItemUnderNav.
0536ace2b6c Internals: (Breaking) renamed RenderNavHighlight() to RenderNavCursor(), ImGuiNavHighlightFlags to ImGuiNavRenderCursorFlags. (#1074, #2048, #7237, #8059, #1712, #7370, #787)
23b655f8e3a Internals: (Breaking) changed g.NavDisableHighlight to g.NavCursorVisible : same logic but inverted value. (#1074, #2048, #7237, #8059, #1712, #7370, #787)
7a56b411247 Nav: added io.ConfigNavEscapeClearFocusItem. (#8059, #2048, #1074, #3200)
db26fe7ca8d Debug Tools: Metrics: Fixed a crash when browsing "InputText" section before using one. (#8071)
604f2fa84aa InputScalar: added an assert to clarify that ImGuiInputTextFlags_EnterReturnsTrue is not supported by InputFloat, InputInt etc. (#8065)
38617a5ad34 Internals: remove ImGuiInputTextFlags_NoMarkEdited and g.LockMarkEdited n favor of ImGuiItemFlags_NoMarkEdited.
0f6a463fae5 Internals: rename ImGuiTreeNodeStackData::InFlags and ImGuiNavItemData::InFlags to ItemFlags too.
e6b5cafe65f Internals: rename ImGuiLastItemData::InFlags -> ItemFlags. ImGuiNextItemData::Flags -> HasFlags to avoid mistakes.
706438a43c3 Disabled: clicking a disabled item focuses parent window. Fix/amend 83ecc84. (#8064)
04d9a045570 imgui_freetype: Added support for plutosvg to render OpenType SVG fonts.  (#7927, #7187 + #6591, #6607)
83ecc846dc4 Disabled: clicking a disabled item focuses parent window. (#8064)
67e5f3505d4 InvisibleButton: disable navigation properly + added ImGuiButtonFlags_EnableNav to enable navigation. (#8057)
971d243a872 Fixed typo (#8063)
49a9eee33f2 Commented out obsolete internals's SetItemUsingMouseWheel() (#2891), TreeNodeBehaviorIsOpen() (#4814, #5423, #282, #2958, #924)
50de550ecdd Tooltips: fixed incorrect tooltip positioning when using keyboard/gamepad navigation (1.91.3 regression). (#8036)
42f47590f98 Fixed ad37b79 breaking IsItemHovered()->IsItemFocused() passthrough for navigation.
97da66209cf Internals: removing ImGuiButtonFlags_Repeat (in favor of ImGuiItemFlags_ButtonRepeat), ImGuiButtonFlags_DontClosePopups (unused)
462d1674568 Nav: rectangle highlight not rendered for items with ImGuiItemFlags_NoNav. (#8057)
ad37b79bca2 Nav: shallow tidying up.
626d358e55e Nav: fixed Ctrl+Tab so when starting with no focused window it starts from the top-most window. (#3200)
b0010389011 Nav: added io.ConfigNavEscapeClearFocusWindow to clear focused window on Escape. (#3200)
ba5161740ea Amend d885fe4, fixes default value of ConfigNavCaptureKeyboard. (#2517, #2009)
d885fe4dd0c (Breaking) moved ImGuiConfigFlags_NavEnableSetMousePos -> io.ConfigNavMoveSetMousePos, ImGuiConfigFlags_NavNoCaptureKeyboard -> ConfigNavCaptureKeyboard. (#2517, #2009)
349af8766cb InputText: ensure mouse cursor is set regardless of whether keyboard mode is enabled or not. (#6417)
20ae8bd4c32 Error Handling: turned IsItemHovered()/IsWindowHovered() checks into IM_ASSERT_USER_ERROR. (#1651)
c4bc6744824 IO: WantCaptureKeyboard is never set when ImGuiConfigFlags_NoKeyboard is enabled. (#4921)
98d52b7b26c DrawList: AddCallback() added an optional size parameter allowing to copy and store any amount of user data for usage by callbacks: (#6969, #4770, #7665)
f29e505d94e CI: remove --disableLicenseExpirationCheck.
a0b811dd373 Backends: SDLRenderer2/3: expose selected state in ImGui_ImplXXXX_RenderState structures during render loop. (#6969, #5834, #7468, #3590 + #7616)
9fbc3134591 InputText: amend 661bba0. (#8048)
661bba09ce1 InputText: fixed an issue with not declaring ownership of Delete/Backspace/Arrow keys. (#8048)
f3d242a90d6 Tables: fixed initial auto-sizing issue with synched-instances. (#8045, #7218)
c3629adbeb2 Backends: Metal: fixed ImTextureID cast. (#1641)
6b8accbfa1b Fixed building when defining ImTextureID to a multi-token name. (#1641)
92b94980c69 (Breaking) Default ImTextureID to use a Im64 instead of void* (#1641)
19b494df89f Examples: DirectX12: update Windows SDK version.
f890d853816 Backends: Fixed typo in comments from old wip work 'io.BackendRendererRenderState' -> 'platform_io.Renderer_RenderState'.  (#6969, #5834, #7468, #3590
42206b3d513 Backends: DX9, DX10, DX11, DX12, OpenGL, Vulkan, WGPU: Changed default texture sampler to Clamp instead of Repeat/Wrap. (#7468, #7511, #5999, #5502)
74dd38d27c9 Backends: Vulkan: fixed warnings when building in 32-bit mode.
e94f95d82b9 Backends: DX11, DX12, Vulkan, WGPU: Expose some backend-specific render state usable for callbacks. (#6969, #5834, #7468, #3590)
9bd5d8a2405 Backends: misc renaming of locals. Use 'draw_list' instead of 'cmd_list'. Avoid using 'ctx'.
1dde20ff4a1 Version 1.91.4 WIP

git-subtree-dir: external/imgui/imgui
git-subtree-split: 5c1d2d1e4c562a2ed3efbc64476e703a655b45fd
2025-01-18 13:40:21 +01:00

295 lines
13 KiB
C++

// dear imgui: Renderer Backend for SDL_Renderer for SDL3
// (Requires: SDL 3.0.0+)
// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
// Note how SDL_Renderer is an _optional_ component of SDL3.
// For a multi-platform app consider using e.g. SDL+DirectX on Windows and SDL+OpenGL on Linux/OSX.
// If your application will want to render any non trivial amount of graphics other than UI,
// please be aware that SDL_Renderer currently offers a limited graphic API to the end-user and
// it might be difficult to step out of those boundaries.
// Implemented features:
// [X] Renderer: User texture binding. Use 'SDL_Texture*' as ImTextureID. Read the FAQ about ImTextureID!
// [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
// [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
// You can copy and 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.
// Learn about Dear ImGui:
// - FAQ https://dearimgui.com/faq
// - Getting Started https://dearimgui.com/getting-started
// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
// - Introduction, links and more at the top of imgui.cpp
// CHANGELOG
// 2024-10-09: Expose selected render state in ImGui_ImplSDLRenderer3_RenderState, which you can access in 'void* platform_io.Renderer_RenderState' during draw callbacks.
// 2024-07-01: Update for SDL3 api changes: SDL_RenderGeometryRaw() uint32 version was removed (SDL#9009).
// 2024-05-14: *BREAKING CHANGE* ImGui_ImplSDLRenderer3_RenderDrawData() requires SDL_Renderer* passed as parameter.
// 2024-02-12: Amend to query SDL_RenderViewportSet() and restore viewport accordingly.
// 2023-05-30: Initial version.
#include "imgui.h"
#ifndef IMGUI_DISABLE
#include "imgui_impl_sdlrenderer3.h"
#include <stdint.h> // intptr_t
// Clang warnings with -Weverything
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
#endif
// SDL
#include <SDL3/SDL.h>
#if !SDL_VERSION_ATLEAST(3,0,0)
#error This backend requires SDL 3.0.0+
#endif
// SDL_Renderer data
struct ImGui_ImplSDLRenderer3_Data
{
SDL_Renderer* Renderer; // Main viewport's renderer
SDL_Texture* FontTexture;
ImVector<SDL_FColor> ColorBuffer;
ImGui_ImplSDLRenderer3_Data() { memset((void*)this, 0, sizeof(*this)); }
};
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
static ImGui_ImplSDLRenderer3_Data* ImGui_ImplSDLRenderer3_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplSDLRenderer3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
}
// Functions
bool ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer)
{
ImGuiIO& io = ImGui::GetIO();
IMGUI_CHECKVERSION();
IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");
// Setup backend capabilities flags
ImGui_ImplSDLRenderer3_Data* bd = IM_NEW(ImGui_ImplSDLRenderer3_Data)();
io.BackendRendererUserData = (void*)bd;
io.BackendRendererName = "imgui_impl_sdlrenderer3";
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
bd->Renderer = renderer;
return true;
}
void ImGui_ImplSDLRenderer3_Shutdown()
{
ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplSDLRenderer3_DestroyDeviceObjects();
io.BackendRendererName = nullptr;
io.BackendRendererUserData = nullptr;
io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
IM_DELETE(bd);
}
static void ImGui_ImplSDLRenderer3_SetupRenderState(SDL_Renderer* renderer)
{
// Clear out any viewports and cliprect set by the user
// FIXME: Technically speaking there are lots of other things we could backup/setup/restore during our render process.
SDL_SetRenderViewport(renderer, nullptr);
SDL_SetRenderClipRect(renderer, nullptr);
}
void ImGui_ImplSDLRenderer3_NewFrame()
{
ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDLRenderer3_Init()?");
if (!bd->FontTexture)
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.
float rsx = 1.0f;
float rsy = 1.0f;
SDL_GetRenderScale(renderer, &rsx, &rsy);
ImVec2 render_scale;
render_scale.x = (rsx == 1.0f) ? draw_data->FramebufferScale.x : 1.0f;
render_scale.y = (rsy == 1.0f) ? draw_data->FramebufferScale.y : 1.0f;
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
int fb_width = (int)(draw_data->DisplaySize.x * render_scale.x);
int fb_height = (int)(draw_data->DisplaySize.y * render_scale.y);
if (fb_width == 0 || fb_height == 0)
return;
// Backup SDL_Renderer state that will be modified to restore it afterwards
struct BackupSDLRendererState
{
SDL_Rect Viewport;
bool ViewportEnabled;
bool ClipEnabled;
SDL_Rect ClipRect;
};
BackupSDLRendererState old = {};
old.ViewportEnabled = SDL_RenderViewportSet(renderer);
old.ClipEnabled = SDL_RenderClipEnabled(renderer);
SDL_GetRenderViewport(renderer, &old.Viewport);
SDL_GetRenderClipRect(renderer, &old.ClipRect);
// Setup desired state
ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
// Setup render state structure (for callbacks and custom texture bindings)
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
ImGui_ImplSDLRenderer3_RenderState render_state;
render_state.Renderer = renderer;
platform_io.Renderer_RenderState = &render_state;
// Will project scissor/clipping rectangles into framebuffer space
ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports
ImVec2 clip_scale = render_scale;
// Render command lists
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* draw_list = draw_data->CmdLists[n];
const ImDrawVert* vtx_buffer = draw_list->VtxBuffer.Data;
const ImDrawIdx* idx_buffer = draw_list->IdxBuffer.Data;
for (int cmd_i = 0; cmd_i < draw_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &draw_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
// User callback, registered via ImDrawList::AddCallback()
// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
else
pcmd->UserCallback(draw_list, pcmd);
}
else
{
// Project scissor/clipping rectangles into framebuffer space
ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);
ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);
if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }
if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
continue;
SDL_Rect r = { (int)(clip_min.x), (int)(clip_min.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y) };
SDL_SetRenderClipRect(renderer, &r);
const float* xy = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, pos));
const float* uv = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, uv));
const SDL_Color* color = (const SDL_Color*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.19+
// Bind texture, Draw
SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
SDL_RenderGeometryRaw8BitColor(renderer, bd->ColorBuffer, tex,
xy, (int)sizeof(ImDrawVert),
color, (int)sizeof(ImDrawVert),
uv, (int)sizeof(ImDrawVert),
draw_list->VtxBuffer.Size - pcmd->VtxOffset,
idx_buffer + pcmd->IdxOffset, pcmd->ElemCount, sizeof(ImDrawIdx));
}
}
}
platform_io.Renderer_RenderState = nullptr;
// Restore modified SDL_Renderer state
SDL_SetRenderViewport(renderer, old.ViewportEnabled ? &old.Viewport : nullptr);
SDL_SetRenderClipRect(renderer, old.ClipEnabled ? &old.ClipRect : nullptr);
}
// Called by Init/NewFrame/Shutdown
bool ImGui_ImplSDLRenderer3_CreateFontsTexture()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
// Build texture atlas
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
// Upload texture to graphics system
// (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
bd->FontTexture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STATIC, width, height);
if (bd->FontTexture == nullptr)
{
SDL_Log("error creating texture");
return false;
}
SDL_UpdateTexture(bd->FontTexture, nullptr, pixels, 4 * width);
SDL_SetTextureBlendMode(bd->FontTexture, SDL_BLENDMODE_BLEND);
SDL_SetTextureScaleMode(bd->FontTexture, SDL_SCALEMODE_LINEAR);
// Store our identifier
io.Fonts->SetTexID((ImTextureID)(intptr_t)bd->FontTexture);
return true;
}
void ImGui_ImplSDLRenderer3_DestroyFontsTexture()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
if (bd->FontTexture)
{
io.Fonts->SetTexID(0);
SDL_DestroyTexture(bd->FontTexture);
bd->FontTexture = nullptr;
}
}
bool ImGui_ImplSDLRenderer3_CreateDeviceObjects()
{
return ImGui_ImplSDLRenderer3_CreateFontsTexture();
}
void ImGui_ImplSDLRenderer3_DestroyDeviceObjects()
{
ImGui_ImplSDLRenderer3_DestroyFontsTexture();
}
//-----------------------------------------------------------------------------
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
#endif // #ifndef IMGUI_DISABLE