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# Conflicts:
#	backends/imgui_impl_osx.h
#	backends/imgui_impl_osx.mm
#	backends/imgui_impl_sdl3.cpp
#	backends/imgui_impl_vulkan.cpp
#	imgui.h
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docs/BACKENDS.md
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@ -1,13 +1,28 @@
_(You may browse this at https://github.com/ocornut/imgui/blob/master/docs/BACKENDS.md or view this file with any Markdown viewer)_
## Dear ImGui: Backends
# Dear ImGui: Backends
### Integrating backends
## Index
- [Introduction](#introduction)
- [Getting Started](#getting-started)
- [What are Backends?](#what-are-backends)
- [Using standard Backends](#using-standard-backends)
- [Using third-party Backends](#using-third-party-backends)
- [Writing your own Backend](#writing-your-own-backend)
- [Using a custom engine?](#using-a-custom-engine)
- [Platform: Implementing your Platform Backend](#platform-implementing-your-platform-backend)
- [Rendering: Implementing your RenderDrawData function](#rendering-implementing-your-renderdrawdata-function)
- [Rendering: Adding support for `ImGuiBackendFlags_RendererHasTextures` (1.92+)](#rendering-adding-support-for-imguibackendflags_rendererhastextures-192)
## Introduction
### Getting Started
💡 The **[Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) wiki guide** has examples of how to integrate Dear ImGui into an existing application.
<BR> The [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) documentation may also be worth a read.
### What are backends?
### What are Backends?
Dear ImGui is highly portable and only requires a few things to run and render, typically:
@ -34,13 +49,13 @@ and the backends which we are describing here (backends/ folder).
- You should be able to write backends for pretty much any platform and any 3D graphics API.
e.g. you can get creative and use software rendering or render remotely on a different machine.
### Standard backends
## Using standard Backends
**The [backends/](https://github.com/ocornut/imgui/blob/master/backends) folder contains backends for popular platforms/graphics API, which you can use in
your application or engine to easily integrate Dear ImGui.** Each backend is typically self-contained in a pair of files: imgui_impl_XXXX.cpp + imgui_impl_XXXX.h.
- The 'Platform' backends are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, and windowing.<BR>
e.g. Windows ([imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp)), GLFW ([imgui_impl_glfw.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_glfw.cpp)), SDL2 ([imgui_impl_sdl2.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_sdl2.cpp)), etc.
e.g. Windows ([imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp)), SDL3 ([imgui_impl_sdl3.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_sdl3.cpp)), GLFW ([imgui_impl_glfw.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_glfw.cpp)), etc.
- The 'Renderer' backends are in charge of: creating atlas texture, and rendering imgui draw data.<BR>
e.g. DirectX11 ([imgui_impl_dx11.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_dx11.cpp)), OpenGL/WebGL ([imgui_impl_opengl3.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_opengl3.cpp)), Vulkan ([imgui_impl_vulkan.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_vulkan.cpp)), etc.
@ -53,44 +68,41 @@ For example, the [example_win32_directx11](https://github.com/ocornut/imgui/tree
**Once Dear ImGui is setup and running, run and refer to `ImGui::ShowDemoWindow()` in imgui_demo.cpp for usage of the end-user API.**
### List of backends
### List of standard Backends
In the [backends/](https://github.com/ocornut/imgui/blob/master/backends) folder:
List of Platforms Backends:
imgui_impl_android.cpp ; Android native app API
imgui_impl_glfw.cpp ; GLFW (Windows, macOS, Linux, etc.) http://www.glfw.org/
imgui_impl_osx.mm ; macOS native API (not as feature complete as glfw/sdl backends)
imgui_impl_sdl2.cpp ; SDL2 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
imgui_impl_sdl3.cpp ; SDL3 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org (*EXPERIMENTAL UNTIL SDL3 IS RELEASED*)
imgui_impl_win32.cpp ; Win32 native API (Windows)
imgui_impl_glut.cpp ; GLUT/FreeGLUT (this is prehistoric software and absolutely not recommended today!)
imgui_impl_android.cpp ; Android native app API
imgui_impl_glfw.cpp ; GLFW (Windows, macOS, Linux, etc.) http://www.glfw.org/
imgui_impl_osx.mm ; macOS native API (not as feature complete as glfw/sdl backends)
imgui_impl_sdl2.cpp ; SDL2 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
imgui_impl_sdl3.cpp ; SDL3 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
imgui_impl_win32.cpp ; Win32 native API (Windows)
imgui_impl_glut.cpp ; GLUT/FreeGLUT (this is prehistoric software and absolutely not recommended today!)
List of Renderer Backends:
imgui_impl_dx9.cpp ; DirectX9
imgui_impl_dx10.cpp ; DirectX10
imgui_impl_dx11.cpp ; DirectX11
imgui_impl_dx12.cpp ; DirectX12
imgui_impl_metal.mm ; Metal (with ObjC)
imgui_impl_opengl2.cpp ; OpenGL 2 (legacy, fixed pipeline <- don't use with modern OpenGL context)
imgui_impl_opengl3.cpp ; OpenGL 3/4, OpenGL ES 2, OpenGL ES 3 (modern programmable pipeline)
imgui_impl_dx9.cpp ; DirectX9
imgui_impl_dx10.cpp ; DirectX10
imgui_impl_dx11.cpp ; DirectX11
imgui_impl_dx12.cpp ; DirectX12
imgui_impl_metal.mm ; Metal (ObjC or C++)
imgui_impl_opengl2.cpp ; OpenGL 2 (legacy fixed pipeline. Don't use with modern OpenGL code!)
imgui_impl_opengl3.cpp ; OpenGL 3/4, OpenGL ES 2/3, WebGL
imgui_impl_sdlgpu3.cpp ; SDL_GPU (portable 3D graphics API of SDL3)
imgui_impl_sdlrenderer2.cpp ; SDL_Renderer (optional component of SDL2 available from SDL 2.0.18+)
imgui_impl_sdlrenderer3.cpp ; SDL_Renderer (optional component of SDL3 available from SDL 3.0.0+)
imgui_impl_vulkan.cpp ; Vulkan
imgui_impl_wgpu.cpp ; WebGPU (web and desktop)
imgui_impl_sdlrenderer3.cpp ; SDL_Renderer (optional component of SDL3. Prefer using SDL_GPU!).
imgui_impl_vulkan.cpp ; Vulkan
imgui_impl_wgpu.cpp ; WebGPU (web + desktop)
List of high-level Frameworks Backends (combining Platform + Renderer):
imgui_impl_allegro5.cpp
Emscripten is also supported!
The SDL+GL, GLFW+GL and GLFW+WebGPU examples are all ready to build and run with Emscripten.
### Backends for third-party frameworks, graphics API or other languages
See https://github.com/ocornut/imgui/wiki/Bindings for the full list (e.g. Adventure Game Studio, Cinder, Cocos2d-x, Game Maker Studio2, Godot, LÖVE+LUA, Magnum, Monogame, Ogre, openFrameworks, OpenSceneGraph, SFML, Sokol, Unity, Unreal Engine and many others).
The SDL2+GL, SDL3+GL, GLFW+GL and GLFW+WebGPU examples are all ready to build and run with Emscripten.
### Recommended Backends
@ -98,18 +110,32 @@ If you are not sure which backend to use, the recommended platform/frameworks fo
|Library |Website |Backend |Note |
|--------|--------|--------|-----|
| GLFW | https://github.com/glfw/glfw | imgui_impl_glfw.cpp | |
| SDL3 | https://www.libsdl.org | imgui_impl_sdl3.cpp | Recommended |
| SDL2 | https://www.libsdl.org | imgui_impl_sdl2.cpp | |
| GLFW | https://github.com/glfw/glfw | imgui_impl_glfw.cpp | |
| Sokol | https://github.com/floooh/sokol | [util/sokol_imgui.h](https://github.com/floooh/sokol/blob/master/util/sokol_imgui.h) | Lower-level than GLFW/SDL |
If your application runs on Windows or if you are using multi-viewport, the win32 backend handles some details a little better than other backends.
## Using third-party Backends
See https://github.com/ocornut/imgui/wiki/Bindings for the full list (e.g. Adventure Game Studio, Cinder, Cocos2d-x, Game Maker Studio2, Godot, LÖVE+LUA, Magnum, Monogame, Ogre, openFrameworks, OpenSceneGraph, SFML, Sokol, Unity, Unreal Engine and many others).
## Writing your own Backend
### Using a custom engine?
You will likely be tempted to start by rewrite your own backend using your own custom/high-level facilities...<BR>
Think twice!
If you are new to Dear ImGui, first try using the existing backends as-is.
TL;DR;
- Writing your own Renderer Backend is easy.
- Writing your own Platform Backend is harder and you are more likely to introduce bugs.
- **It is unlikely you will add value to your project by creating your own backend.**
**Consider using the existing backends as-is**.
You will save lots of time integrating the library.
Standard backends are battle-tested and handle subtleties that you are likely to implement incorrectly.
You can LATER decide to rewrite yourself a custom backend if you really need to.
In most situations, custom backends have fewer features and more bugs than the standard backends we provide.
If you want portability, you can use multiple backends and choose between them either at compile time
@ -131,16 +157,220 @@ Suggestion: try using a non-portable backend first (e.g. win32 + underlying grap
your desktop builds working first. This will get you running faster and get your acquainted with
how Dear ImGui works and is setup. You can then rewrite a custom backend using your own engine API...
Generally:
It is unlikely you will add value to your project by creating your own backend.
Also:
The [multi-viewports feature](https://github.com/ocornut/imgui/wiki/Multi-Viewports) of the 'docking' branch allows
Dear ImGui windows to be seamlessly detached from the main application window. This is achieved using an
extra layer to the Platform and Renderer backends, which allows Dear ImGui to communicate platform-specific
requests such as: "create an additional OS window", "create a render context", "get the OS position of this
window" etc. See 'ImGuiPlatformIO' for details.
window", but some things are more difficult "find OS window under mouse position BUT with some windows marked as passthrough". See 'ImGuiPlatformIO' for details.
Supporting the multi-viewports feature correctly using 100% of your own abstractions is more difficult
than supporting single-viewport.
If you decide to use unmodified imgui_impl_XXXX.cpp files, you can automatically benefit from
improvements and fixes related to viewports and platform windows without extra work on your side.
### Platform: Implementing your Platform Backend
The Platform backends in impl_impl_XXX.cpp files contain many implementations.
**In your `ImGui_ImplXXX_Init()` function:**
- You can allocate your backend data and use `io.BackendPlatformUserData` to store/retrieve it later.
- Set `io.BackendPlatformName` to a name `"imgui_impl_xxxx"` which will be available in e.g. About box.
- Set `io.BackendPlatformUserData` to your backend data.
- Set `io.BackendFlags` with supported optional features:
- `ImGuiBackendFlags_HasGamepad`: supports gamepad and currently has one connected.
- `ImGuiBackendFlags_HasMouseCursors`: supports honoring GetMouseCursor() value to change the OS cursor shape.
- `ImGuiBackendFlags_HasSetMousePos`: supports io.WantSetMousePos requests to reposition the OS mouse position (only used if io.ConfigNavMoveSetMousePos is set).
- `ImGuiBackendFlags_PlatformHasViewports` supports multiple viewports. (multi-viewports only)
- `ImGuiBackendFlags_HasMouseHoveredViewport` supports calling io.AddMouseViewportEvent() with the viewport under the mouse. IF POSSIBLE, ignore viewports with the ImGuiViewportFlags_NoInputs flag. If this cannot be done, Dear ImGui needs to use a flawed heuristic to find the viewport under mouse position, as it doesn't know about foreign windows. (multi-viewports only)
**In your `ImGui_ImplXXX_NewFrame()` function:**
- Set `io.DeltaTime` to the time elapsed (in seconds) since last frame.
- Set `io.DisplaySize` to your window size.
- Set `io.DisplayFrameBufferSize` to your window pixel density (macOS/iOS only).
- Update mouse cursor shape is supported.
**In your `ImGui_ImplXXX_NewFrame()` function or event handlers:**
- **Mouse Support**
- Use `io.AddMousePosEvent()`, `io.AddMouseButtonEvent()`, `io.AddMouseWheelEvent()` to pass mouse events.
- Use `io.AddMouseSourceEvent()` if you are able to distinguish Mouse from TouchScreen from Pen inputs. TouchScreen and Pen inputs requires different logic for some Dear ImGui features.
- Use `io.AddMouseViewportEvent()` to specify which viewport/OS window is being hovered by the mouse. Read instructions carefully as this is not as simple as it seems! (multi-viewports only)
- **Keyboard Support**
- Use `io.AddKeyEvent()` to pass key events.
- Use `io.AddInputCharacter()` to pass text/character events.
- **Gamepad Support**
- Use `io.AddKeyEvent()` and `io.AddKeyAnalogEvent()` to pass gamepad events, using `ImGuiKey_GamepadXXX` values.
- **Miscellaneous**
- Clipboard Support: setup `Platform_GetClipboardTextFn()`, `Platform_SetClipboardTextFn()` handlers in `ImGuiPlatformIO`.
- Open in Shell support: setup `Platform_OpenInShellFn()` handler in `ImGuiPlatformIO`.
- IME Support: setup `Platform_SetImeDataFn()` handler in `ImGuiPlatformIO`.
- Use `io.AddFocusEvent()` to notify when application window gets focused/unfocused.
- **Multi-viewport Support**
- Update monitor list if supported.
- Setup all required handlers in `ImGuiPlatformIO` to create/destroy/move/resize/title/focus/etc. windows.
### Rendering: Implementing your RenderDrawData function
Note: set `ImGuiBackendFlags_RendererHasVtxOffset` to signify your backend can handle rendering with a vertex offset (`ImDrawCmd::VtxOffset` field).
Otherwise, rendering will be limited to 64K vertices per window, which may be limiting for advanced plot.
As an alternative, you may also use `#define ImDrawIdx unsigned int` in your `imconfig.h` file to support 32-bit indices.
```cpp
void MyImGuiBackend_RenderDrawData(ImDrawData* draw_data)
{
// TODO: Update textures.
// - Most of the times, the list will have 1 element with an OK status, aka nothing to do.
// - This almost always points to ImGui::GetPlatformIO().Textures[] but is part of ImDrawData to allow overriding or disabling texture updates.
if (draw_data->Textures != nullptr)
for (ImTextureData* tex : *draw_data->Textures)
if (tex->Status != ImTextureStatus_OK)
MyImGuiBackend_UpdateTexture(tex);
// TODO: Setup render state:
// - Alpha-blending enabled
// - No backface culling
// - No depth testing, no depth writing
// - Scissor enabled
MyEngineSetupenderState();
// TODO: Setup texture sampling state
// - Sample with bilinear filtering (NOT point/nearest filtering).
// - Use 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines;' to allow point/nearest filtering.
// TODO: Setup viewport covering draw_data->DisplayPos to draw_data->DisplayPos + draw_data->DisplaySize
// TODO: Setup orthographic projection matrix cover draw_data->DisplayPos to draw_data->DisplayPos + draw_data->DisplaySize
// TODO: Setup shader: vertex { float2 pos, float2 uv, u32 color }, fragment shader sample color from 1 texture, multiply by vertex color.
// Render command lists
ImVec2 clip_off = draw_data->DisplayPos;
ImVec2 clip_scale = draw_data->FramebufferScale;
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
const ImDrawVert* vtx_buffer = cmd_list->VtxBuffer.Data; // vertex buffer generated by Dear ImGui
const ImDrawIdx* idx_buffer = cmd_list->IdxBuffer.Data; // index buffer generated by Dear ImGui
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
MyEngineSetupenderState();
else
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
// Project scissor/clipping rectangles into framebuffer space
// - Clipping coordinates are provided in imgui coordinates space:
// - For a given viewport, draw_data->DisplayPos == viewport->Pos and draw_data->DisplaySize == viewport->Size
// - In a single viewport application, draw_data->DisplayPos == (0,0) and draw_data->DisplaySize == io.DisplaySize, but always use GetMainViewport()->Pos/Size instead of hardcoding those values.
// - In the interest of supporting multi-viewport applications (see 'docking' branch on github),
// always subtract draw_data->DisplayPos from clipping bounds to convert them to your viewport space.
// - Note that pcmd->ClipRect contains Min+Max bounds. Some graphics API may use Min+Max, other may use Min+Size (size being Max-Min)
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_max.x <= clip_min.x || clip_max.y <= clip_min.y)
continue;
// We are using scissoring to clip some objects. All low-level graphics API should support it.
// - If your engine doesn't support scissoring yet, you may ignore this at first. You will get some small glitches
// (some elements visible outside their bounds) but you can fix that once everything else works!
MyEngineSetScissor(clip_min.x, clip_min.y, clip_max.x, clip_max.y);
// The texture for the draw call is specified by pcmd->GetTexID().
// The vast majority of draw calls will use the Dear ImGui texture atlas, which value you have set yourself during initialization.
MyEngineBindTexture((MyTexture*)pcmd->GetTexID());
// Render 'pcmd->ElemCount/3' indexed triangles.
// By default the indices ImDrawIdx are 16-bit, you can change them to 32-bit in imconfig.h if your engine doesn't support 16-bit indices.
MyEngineDrawIndexedTriangles(pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer + pcmd->IdxOffset, vtx_buffer, pcmd->VtxOffset);
}
}
}
}
```
### Rendering: Adding support for `ImGuiBackendFlags_RendererHasTextures` (1.92+)
Version [1.92.0](https://github.com/ocornut/imgui/releases/tag/v1.92.0) (June 2025), added texture support in Rendering Backends, which is the backbone for supporting dynamic font scaling among other things.
**In order to move forward and take advantage of all new features, support for `ImGuiBackendFlags_RendererHasTextures` will likely be REQUIRED for all backends before June 2026.**
**TD;DR: List of commits which added support for `ImGuiBackendFlags_RendererHasTextures` in standard backends:**
- Allegro5: [ee8941e](https://github.com/ocornut/imgui/commit/ee8941e) (+35 lines)
- DirectX9: [75efba7](https://github.com/ocornut/imgui/commit/75efba7) (+48 lines)
- DirectX10: [2d2b1bc](https://github.com/ocornut/imgui/commit/2d2b1bc) (+40 lines)
- DirectX11: [372fd27](https://github.com/ocornut/imgui/commit/372fd27) (+40 lines)
- DirectX12: [eefe5d5](https://github.com/ocornut/imgui/commit/eefe5d5) (+87 lines)
- Metal: [26c017d](https://github.com/ocornut/imgui/commit/26c017d) (+55 lines)
- OpenGL Legacy: [0430c55](https://github.com/ocornut/imgui/commit/0430c55) (+25 lines)
- OpenGL3/WebGL/ES: [dbb91a5](https://github.com/ocornut/imgui/commit/dbb91a5) (+47 lines)
- SDL_Renderer2: [9fa65cd](https://github.com/ocornut/imgui/commit/9fa65cd) (+20 lines)
- SDL_Renderer3: [e538883](https://github.com/ocornut/imgui/commit/e538883) (+19 lines)
- SDL_GPU: [16fe666](https://github.com/ocornut/imgui/commit/16fe666) (+41 lines)
- Vulkan: [abe294b](https://github.com/ocornut/imgui/commit/abe294b) (+33 lines)
- WGPU: [571dae9](https://github.com/ocornut/imgui/commit/571dae9) (+30 lines)
**Instructions:**
- Set `ImGuiBackendFlags_RendererHasTextures` to signify your backend can handle the feature.
- During rendering, e.g. in your RenderDrawData function, iterate `ImDrawData->Textures` array and process all textures.
- During shutdown, iterate the `ImGui::GetPlatformIO().Textures` and destroy all textures.
- (Both arrays are `ImVector<ImTextureData*>`. They are only in different location because: to allow advanced users to perform multi-threaded rendering, we store a pointer to the texture list in ImDrawData, with the aim that multi-threaded rendering users replace it with their own pointer.)
Pseudo-code for processing a texture:
```cpp
if (draw_data->Textures != nullptr)
for (ImTextureData* tex : *draw_data->Textures)
if (tex->Status != ImTextureStatus_OK)
MyImGuiBackend_UpdateTexture(tex);
```
```cpp
void MyImGuiBackend_UpdateTexture(ImTextureData* tex)
{
if (tex->Status == ImTextureStatus_WantCreate)
{
// Create texture based on tex->Width, tex->Height.
// - Most backends only support tex->Format == ImTextureFormat_RGBA32.
// - Backends for particularly memory constrainted platforms may support tex->Format == ImTextureFormat_Alpha8.
// Upload all texture pixels
// - Read from our CPU-side copy of the texture and copy to your graphics API.
// - Use tex->Width, tex->Height, tex->GetPixels(), tex->GetPixelsAt(), tex->GetPitch() as needed.
// Store your data, and acknowledge creation.
tex->SetTexID(xxxx); // Specify backend-specific ImTextureID identifier which will be stored in ImDrawCmd.
tex->SetStatus(ImTextureStatus_OK);
tex->BackendUserData = xxxx; // Store more backend data if needed (most backend allocate a small texture to store data in there)
}
if (tex->Status == ImTextureStatus_WantUpdates)
{
// Upload a rectangle of pixels to the existing texture
// - We only ever write to textures regions which have never been used before!
// - Use tex->TexID or tex->BackendUserData to retrieve your stored data.
// - Use tex->UpdateRect.x/y, tex->UpdateRect.w/h to obtain the block position and size.
// - Use tex->Updates[] to obtain individual sub-regions within tex->UpdateRect. Not recommended.
// - Read from our CPU-side copy of the texture and copy to your graphics API.
// - Use tex->Width, tex->Height, tex->GetPixels(), tex->GetPixelsAt(), tex->GetPitch() as needed.
// Acknowledge update
tex->SetStatus(ImTextureStatus_OK);
}
if (tex->Status == ImTextureStatus_WantDestroy && tex->UnusedFrames > 0)
{
// If you use staged rendering and have in-flight renders, changed tex->UnusedFrames > 0 check to higher count as needed e.g. > 2
// Destroy texture
// - Use tex->TexID or tex->BackendUserData to retrieve your stored data.
// - Destroy texture in your graphics API.
// Acknowledge destruction
tex->SetTexID(ImTextureID_Invalid);
tex->SetStatus(ImTextureStatus_Destroyed);
}
}
```
Refer to "List of commits which added support for `ImGuiBackendFlags_RendererHasTextures` in standard backends" above for concrete examples of this.

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docs/CHANGELOG.txt
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@ -35,6 +35,24 @@ 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 1.92.1 WIP (In Progress)
-----------------------------------------------------------------------
Breaking changes:
Other changes:
- Backends: SDL3: avoid calling SDL_StartTextInput() again if already active.
(#8727) [@morrazzzz]
- Backends: OSX: added ImGuiMouseCursor_Wait and ImGuiMouseCursor_Progress
mouse cursor support. (#8739) [@cfillion]
- Backends: Vulkan: use nonCoherentAtomSize to align upload_size, fixing
validation error on some setups. (#8743, #8744) [@tquante]
Docking+Viewports Branch:
-----------------------------------------------------------------------
VERSION 1.92.0 (Released 2025-06-25)
-----------------------------------------------------------------------
@ -45,6 +63,9 @@ THIS VERSION CONTAINS THE LARGEST AMOUNT OF BREAKING CHANGES SINCE 2015!
I TRIED REALLY HARD TO KEEP THEM TO A MINIMUM, REDUCE THE AMOUNT OF INTERFERENCE,
BUT INEVITABLY SOME USERS OR THIRD-PARTY EXTENSIONS WILL BE AFFECTED.
For instructions to upgrade your custom backend:
--> See https://github.com/ocornut/imgui/blob/master/docs/BACKENDS.md
IN ORDER TO HELP US IMPROVE THE TRANSITION PROCESS, INCL. DOCUMENTATION AND COMMENTS,
PLEASE REPORT **ANY** DOUBT, CONFUSION, QUESTIONS, FEEDBACK TO:
https://github.com/ocornut/imgui/issues/

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docs/EXAMPLES.md
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@ -3,7 +3,7 @@ _(You may browse this at https://github.com/ocornut/imgui/blob/master/docs/EXAMP
## Dear ImGui: Examples
**The [examples/](https://github.com/ocornut/imgui/blob/master/examples) folder example applications (standalone, ready-to-build) for variety of
platforms and graphics APIs.** They all use standard backends from the [backends/](https://github.com/ocornut/imgui/blob/master/backends) folder (see [BACKENDS.md](https://github.com/ocornut/imgui/blob/master/docs/BACKENDS.md)).
platforms and graphics APIs.** They all use standard backends from the [backends/](https://github.com/ocornut/imgui/blob/master/backends) folder (see [docs/BACKENDS.md](https://github.com/ocornut/imgui/blob/master/docs/BACKENDS.md)).
The purpose of Examples is to showcase integration with backends, let you try Dear ImGui, and guide you toward
integrating Dear ImGui in your own application/game/engine.

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docs/FAQ.md
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@ -19,6 +19,7 @@ or view this file with any Markdown viewer.
| **[How can I tell whether to dispatch mouse/keyboard to Dear ImGui or my application?](#q-how-can-i-tell-whether-to-dispatch-mousekeyboard-to-dear-imgui-or-my-application)** |
| [How can I enable keyboard or gamepad controls?](#q-how-can-i-enable-keyboard-or-gamepad-controls) |
| [How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)](#q-how-can-i-use-this-on-a-machine-without-mouse-keyboard-or-screen-input-share-remote-display) |
| [How can I create my own backend?](q-how-can-i-create-my-own-backend)
| [I integrated Dear ImGui in my engine and little squares are showing instead of text...](#q-i-integrated-dear-imgui-in-my-engine-and-little-squares-are-showing-instead-of-text) |
| [I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around...](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-clipping-or-disappearing-when-i-move-windows-around) |
| [I integrated Dear ImGui in my engine and some elements are displaying outside their expected windows boundaries...](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-displaying-outside-their-expected-windows-boundaries) |
@ -92,8 +93,8 @@ Many projects are using this branch and it is kept in sync with master regularly
### Q: How to get started?
Read [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started). <BR>
Read [EXAMPLES.md](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md). <BR>
Read [BACKENDS.md](https://github.com/ocornut/imgui/blob/master/docs/BACKENDS.md). <BR>
Read [docs/EXAMPLES.md](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md). <BR>
Read [docs/BACKENDS.md](https://github.com/ocornut/imgui/blob/master/docs/BACKENDS.md). <BR>
Read `PROGRAMMER GUIDE` section of [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp). <BR>
The [Wiki](https://github.com/ocornut/imgui/wiki) is a hub to many resources and links.
@ -159,6 +160,14 @@ Console SDK also sometimes provide equivalent tooling or wrapper for Synergy-lik
---
### Q: How can I create my own backend?
- See [docs/BACKENDS.md](https://github.com/ocornut/imgui/blob/master/docs/BACKENDS.md).
- See Documentation at the top of imgui.cpp.
##### [Return to Index](#index)
---
### Q: I integrated Dear ImGui in my engine and little squares are showing instead of text...
Your renderer backend is not using the font texture correctly or it hasn't been uploaded to the GPU.
- If this happens using standard backends (before 1.92): A) have you modified the font atlas after `ImGui_ImplXXX_NewFrame()`? B) maybe the texture failed to upload, which **can if your texture atlas is too big**. Also see [docs/FONTS.md](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md).

2
docs/README.md
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@ -110,7 +110,7 @@ Reading the changelogs is a good way to keep up to date with the things Dear ImG
Calling the `ImGui::ShowDemoWindow()` function will create a demo window showcasing a variety of features and examples. The code is always available for reference in `imgui_demo.cpp`. [Here's how the demo looks](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/v167-misc.png).
You should be able to build the examples from sources. If you don't, let us know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
- [imgui-demo-binaries-20241211.zip](https://www.dearimgui.com/binaries/imgui-demo-binaries-20241211.zip) (Windows, 1.91.6, built 2024/11/11, master) or [older binaries](https://www.dearimgui.com/binaries).
- [imgui-demo-binaries-20250625.zip](https://www.dearimgui.com/binaries/imgui-demo-binaries-20250625.zip) (Windows, 1.92.0, built 2025/06/25, master) or [older binaries](https://www.dearimgui.com/binaries).
The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at a different scale and scale your style with `style.ScaleAllSizes()` (see [FAQ](https://www.dearimgui.com/faq)).