Merge branch 'master' into docking

# Conflicts:
#	imgui.cpp

.gitignore

@@ -9,6 +9,8 @@ imgui*.ini
 
 ## General build artifacts
 *.o
+*.so*
+*.a
 *.obj
 *.exe
 examples/*/Debug/*
@@ -57,6 +59,11 @@ examples/example_sdl3_wgpu/web/*
 .idea
 cmake-build-*
 
+## QNX artifacts
+*.pinfo
+*.dep
+*.gcno
+
 ## Unix executables from our example Makefiles
 examples/example_apple_metal/example_apple_metal
 examples/example_apple_opengl2/example_apple_opengl2

backends/imgui_impl_allegro5.cpp

@@ -269,8 +269,7 @@ void ImGui_ImplAllegro5_UpdateTexture(ImTextureData* tex)
         IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
         IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
 
-        // Create texture
-        // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+        // Create texture (bilinear sampling is required)
         const int new_bitmap_flags = al_get_new_bitmap_flags();
         int new_bitmap_format = al_get_new_bitmap_format();
         al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP | ALLEGRO_MIN_LINEAR | ALLEGRO_MAG_LINEAR);

backends/imgui_impl_dx10.cpp

@@ -563,8 +563,7 @@ bool    ImGui_ImplDX10_CreateDeviceObjects()
         bd->pd3dDevice->CreateDepthStencilState(&desc, &bd->pDepthStencilState);
     }
 
-    // Create texture sampler
-    // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+    // Create texture sampler (bilinear sampling is required)
     {
         D3D10_SAMPLER_DESC desc;
         ZeroMemory(&desc, sizeof(desc));

backends/imgui_impl_dx12.cpp

@@ -684,7 +684,7 @@ bool    ImGui_ImplDX12_CreateDeviceObjects()
         param[1].DescriptorTable.pDescriptorRanges = &descRange;
         param[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
 
-        // Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
+        // Bilinear sampling is required
         D3D12_STATIC_SAMPLER_DESC staticSampler[1] = {};
         staticSampler[0].Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
         staticSampler[0].AddressU = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;

backends/imgui_impl_metal.mm

@@ -743,7 +743,7 @@ static void ImGui_ImplMetal_InvalidateDeviceObjectsForPlatformWindows()
     return [[MetalBuffer alloc] initWithBuffer:backing];
 }
 
-// Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
+// Bilinear sampling is required.
 - (id<MTLRenderPipelineState>)renderPipelineStateForFramebufferDescriptor:(FramebufferDescriptor*)descriptor device:(id<MTLDevice>)device
 {
     NSError* error = nil;

backends/imgui_impl_opengl2.cpp

@@ -282,8 +282,7 @@ void ImGui_ImplOpenGL2_UpdateTexture(ImTextureData* tex)
         const void* pixels = tex->GetPixels();
         GLuint gl_texture_id = 0;
 
-        // 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)
+        // Upload texture to graphics system (bilinear sampling is required).
         GLint last_texture;
         GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture));
         GL_CALL(glGenTextures(1, &gl_texture_id));

backends/imgui_impl_opengl3.cpp

@@ -695,8 +695,7 @@ void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex)
         const void* pixels = tex->GetPixels();
         GLuint gl_texture_id = 0;
 
-        // 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)
+        // Upload texture to graphics system (bilinear sampling is required).
         GLint last_texture;
         GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture));
         GL_CALL(glGenTextures(1, &gl_texture_id));

backends/imgui_impl_qnx.h

@@ -0,0 +1,35 @@
+// dear imgui: Platform Backend for QNX Screen
+// This needs to be used along with a Renderer Backend (e.g. OpenGL3, Vulkan).
+
+// Implemented features:
+//  [X] Platform: Keyboard support. Uses io.AddKeyEvent() and native QNX key symbols.
+//  [X] Platform: Mouse support. Handles position, three buttons and horizontal/vertical wheels.
+//  [X] Platform: Touch support. Maps the first active touch contact to the primary mouse button.
+//  [X] Platform: Focus and window-size updates.
+// Missing features or Issues:
+//  [ ] Platform: Clipboard support.
+//  [ ] Platform: Gamepad support.
+//  [ ] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors).
+
+// 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.
+// 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
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+#ifndef IMGUI_DISABLE
+
+#include <screen/screen.h>
+
+// The application owns the Screen context, window and event object.
+// Poll events with screen_get_event() and pass each non-NONE event to ProcessEvent().
+IMGUI_IMPL_API bool     ImGui_ImplQNX_Init(screen_context_t context, screen_window_t window);
+IMGUI_IMPL_API void     ImGui_ImplQNX_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplQNX_NewFrame();
+IMGUI_IMPL_API bool     ImGui_ImplQNX_ProcessEvent(screen_event_t event);
+
+#endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_sdlgpu3.cpp

@@ -593,7 +593,7 @@ void ImGui_ImplSDLGPU3_CreateDeviceObjects()
 
     if (bd->TexSamplerLinear == nullptr)
     {
-        // Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
+        // Bilinear sampling is required.
         SDL_GPUSamplerCreateInfo sampler_info = {};
         sampler_info.min_filter = SDL_GPU_FILTER_LINEAR;
         sampler_info.mag_filter = SDL_GPU_FILTER_LINEAR;

backends/imgui_impl_sdlrenderer2.cpp

@@ -214,8 +214,7 @@ void ImGui_ImplSDLRenderer2_UpdateTexture(ImTextureData* tex)
         IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
         IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
 
-        // Create texture
-        // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+        // Create texture (bilinear sampling is required)
         SDL_Texture* sdl_texture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_STATIC, tex->Width, tex->Height);
         IM_ASSERT(sdl_texture != nullptr && "Backend failed to create texture!");
         SDL_UpdateTexture(sdl_texture, nullptr, tex->GetPixels(), tex->GetPitch());

backends/imgui_impl_sdlrenderer3.cpp

@@ -244,8 +244,7 @@ void ImGui_ImplSDLRenderer3_UpdateTexture(ImTextureData* tex)
         IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
         IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
 
-        // Create texture
-        // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+        // Create texture (bilinear sampling is required)
         SDL_Texture* sdl_texture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_STATIC, tex->Width, tex->Height);
         IM_ASSERT(sdl_texture != nullptr && "Backend failed to create texture!");
         SDL_UpdateTexture(sdl_texture, nullptr, tex->GetPixels(), tex->GetPitch());

backends/imgui_impl_vulkan.cpp

@@ -1185,8 +1185,7 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
         check_vk_result(err);
     }
 
-    // Create samplers
-    // Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
+    // Create samplers (bilinear sampling is required)
     if (!bd->SamplerLinear || !bd->SamplerNearest)
     {
         VkSamplerCreateInfo info = {};

backends/imgui_impl_wgpu.cpp

@@ -846,8 +846,7 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
 
     ImGui_ImplWGPU_CreateUniformBuffer();
 
-    // Create samplers (Linear/Nearest)
-    // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+    // Create samplers (Linear/Nearest) (bilinear sampling is required)
     WGPUSamplerDescriptor sampler_desc = {};
     sampler_desc.addressModeU = WGPUAddressMode_ClampToEdge;
     sampler_desc.addressModeV = WGPUAddressMode_ClampToEdge;

docs/BACKENDS.md

@@ -79,6 +79,7 @@ List of Platforms Backends:
     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_qnx.cpp          ; QNX Screen
     imgui_impl_win32.cpp        ; Win32 native API (Windows)
     imgui_impl_glut.cpp         ; GLUT/FreeGLUT (this is prehistoric software and absolutely not recommended today!)
 
@@ -235,9 +236,7 @@ void MyImGuiBackend_RenderDrawData(ImDrawData* draw_data)
     // - 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 texture sampler to bilinear (NOT point/nearest filtering).
 
     // TODO: Setup viewport covering draw_data->DisplayPos to draw_data->DisplayPos + draw_data->DisplaySize
 

docs/CHANGELOG.txt

@@ -35,6 +35,33 @@ 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 1.93.0 WIP (In Progress)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: obsoleted `style.CurveTessellationTol (default 1.25)` which was in Pixels² unit in
+  favor of `style.CurveTesselationMaxError` (default 1.12)` which is in Pixels unit. It is
+  easier to tweak + this allows us to easily scale error threshold on high density screens.
+  - style.CurveTesselationMaxError == sqrf(style.CurveTessellationTol).
+
+Other Changes:
+
+- Fonts:
+  - Reworked `AddFontDefault()` to use `io.DisplayFrameBufferScale` as part of the heuristic
+    to select `AddFontDefaultVector()` by default, effectively using ProggyForever instead of
+    ProggyClean on most Apple/Retina setups by default.
+- ImDrawList:
+  - Per-viewport FramebufferScale for Apple/Retina screen is applied to draw lists:
+    - AA Fringe is scaled accordingly.
+    - Circle and Curves tessellation error are scaled accordingly.
+- Backends:
+  - QNX: added QNX Screen backend. (#9492) [@mgorchak-blackberry]
+- Examples:
+  - QNX+OpenGL3, QNX+Vulkan: added QNX Screen examples. (#9492) [@mgorchak-blackberry]
+
+
 -----------------------------------------------------------------------
  VERSION 1.92.9b (Released 2026-07-31)
 -----------------------------------------------------------------------

docs/EXAMPLES.md

@@ -117,6 +117,16 @@ Because this application doesn't create a window nor a graphic context, there's
 Please note that imgui_impl_null itself is a rather empty backend. We provide it for consistency but
 it is similarly easy to create a skeleton application without the null backend.
 
+[example_qnx_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_qnx_opengl3/) <BR>
+QNX Screen + OpenGL ES 3 example. <BR>
+= main.cpp + imgui_impl_qnx.cpp + imgui_impl_opengl3.cpp <BR>
+Uses the QNX recursive make build system and compiles the OpenGL3 renderer with `IMGUI_IMPL_OPENGL_ES3`.
+
+[example_qnx_vulkan/](https://github.com/ocornut/imgui/blob/master/examples/example_qnx_vulkan/) <BR>
+QNX Screen + Vulkan example using `VK_QNX_screen_surface`. <BR>
+= main.cpp + imgui_impl_qnx.cpp + imgui_impl_vulkan.cpp <BR>
+Uses the QNX recursive make build system and the Vulkan backend's example helper structures.
+
 [example_sdl2_directx11/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_directx11/) <BR>
 SDL2 + DirectX11 example, Windows only. <BR>
 = main.cpp + imgui_impl_sdl2.cpp + imgui_impl_dx11.cpp <BR>

examples/example_qnx_opengl3/Makefile

@@ -0,0 +1,2 @@
+LIST=OS
+include recurse.mk

examples/example_qnx_opengl3/README.md

@@ -0,0 +1,29 @@
+# Dear ImGui QNX Screen + OpenGL ES 3 example
+
+This example uses:
+
+- `imgui_impl_qnx.cpp` as the QNX Screen platform backend
+- `imgui_impl_opengl3.cpp` as the renderer backend
+- EGL to create an OpenGL ES 3 context and Screen window surface
+
+`imgui_impl_opengl3.cpp` supports desktop OpenGL and OpenGL ES. On QNX this
+example compiles it with `IMGUI_IMPL_OPENGL_ES3` and uses `#version 300 es`.
+No separate Screen/OpenGL renderer backend is required.
+
+## Build
+
+Load the QNX SDP environment, then run:
+
+```sh
+cd examples/example_qnx_opengl3
+make
+```
+
+The QNX recursive make files build for the CPUs enabled in your SDP
+configuration and install the program as `example_qnx_opengl3`.
+
+## Input
+
+The application polls its `screen_context_t` event queue and forwards every
+non-`SCREEN_EVENT_NONE` event to `ImGui_ImplQNX_ProcessEvent()`.
+Escape exits the example.

examples/example_qnx_opengl3/common.mk

@@ -0,0 +1,31 @@
+ifndef QCONFIG
+QCONFIG=qconfig.mk
+endif
+include $(QCONFIG)
+
+NAME=example_qnx_opengl3
+
+SRCS = \
+    main.cpp \
+    imgui.cpp \
+    imgui_demo.cpp \
+    imgui_draw.cpp \
+    imgui_tables.cpp \
+    imgui_widgets.cpp \
+    imgui_impl_qnx.cpp \
+    imgui_impl_opengl3.cpp
+
+EXTRA_SRCVPATH += $(PROJECT_ROOT)/../.. $(PROJECT_ROOT)/../../backends
+EXTRA_INCVPATH += $(PROJECT_ROOT)/../.. $(PROJECT_ROOT)/../../backends
+
+CXXFLAGS += -std=gnu++11 -DIMGUI_IMPL_OPENGL_ES3
+LIBS += EGL GLESv2 screen m
+
+INSTALLDIR=$(firstword $(INSTALLDIR_$(OS)) usr/bin)
+
+define PINFO
+PINFO DESCRIPTION=Dear ImGui QNX Screen and OpenGL ES 3 example
+endef
+
+include $(MKFILES_ROOT)/qmacros.mk
+include $(MKFILES_ROOT)/qtargets.mk

examples/example_qnx_opengl3/main.cpp

@@ -0,0 +1,307 @@
+// Dear ImGui: standalone example application for QNX Screen + OpenGL ES 3
+
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#include "imgui.h"
+#include "imgui_impl_qnx.h"
+#include "imgui_impl_opengl3.h"
+#include <stdio.h>          // printf, fprintf
+#include <errno.h>
+#include <string.h>
+#include <sys/keycodes.h>
+#include <screen/screen.h>
+#include <EGL/egl.h>
+#include <GLES3/gl3.h>
+
+#ifndef EGL_OPENGL_ES3_BIT
+#ifdef EGL_OPENGL_ES3_BIT_KHR
+#define EGL_OPENGL_ES3_BIT EGL_OPENGL_ES3_BIT_KHR
+#else
+#define EGL_OPENGL_ES3_BIT 0x0040
+#endif
+#endif
+
+struct QNXWindow
+{
+    screen_context_t Context = nullptr;
+    screen_window_t Window = nullptr;
+    screen_event_t Event = nullptr;
+    EGLDisplay Display = EGL_NO_DISPLAY;
+    EGLContext GLContext = EGL_NO_CONTEXT;
+    EGLSurface GLSurface = EGL_NO_SURFACE;
+    int Size[2] = {};
+};
+
+// Forward declarations of helper functions
+bool CreateQNXWindow(QNXWindow* window);
+void DestroyQNXWindow(QNXWindow* window);
+bool ProcessQNXEvents(QNXWindow* window);
+
+// Main code
+int main(int, char**)
+{
+    // Setup QNX Screen and EGL
+    QNXWindow window;
+    if (!CreateQNXWindow(&window))
+    {
+        DestroyQNXWindow(&window);
+        return 1;
+    }
+
+    // GL ES 3.0 + GLSL 300 es
+    const char* glsl_version = "#version 300 es";
+    float main_scale = 1.0f;
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsLight();
+
+    // Setup scaling
+    ImGuiStyle& style = ImGui::GetStyle();
+    style.ScaleAllSizes(main_scale);        // Bake a fixed style scale. (until we have a solution for dynamic style scaling, changing this requires resetting Style + calling this again)
+    style.FontScaleDpi = main_scale;        // Set initial font scale. (in docking branch: using io.ConfigDpiScaleFonts=true automatically overrides this for every window depending on the current monitor)
+
+    // Setup Platform/Renderer backends
+    ImGui_ImplQNX_Init(window.Context, window.Window);
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
+    // Load Fonts
+    // - If fonts are not explicitly loaded, Dear ImGui will select an embedded font: either AddFontDefaultVector() or AddFontDefaultBitmap().
+    //   This selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi) reaching a small threshold.
+    // - You can load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - If a file cannot be loaded, AddFont functions will return a nullptr. Please handle those errors in your code (e.g. use an assertion, display an error and quit).
+    // - Read 'docs/FONTS.md' for more instructions and details.
+    // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use FreeType for higher quality font rendering.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //style.FontSizeBase = 20.0f;
+    //io.Fonts->AddFontDefaultVector();
+    //io.Fonts->AddFontDefaultBitmap();
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf");
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf");
+    //IM_ASSERT(font != nullptr);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        if (!ProcessQNXEvents(&window))
+            done = true;
+
+        // Start the Dear ImGui frame
+        ImGui_ImplOpenGL3_NewFrame();
+        ImGui_ImplQNX_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+        glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+        eglSwapBuffers(window.Display, window.GLSurface);
+    }
+
+    // Cleanup
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplQNX_Shutdown();
+    ImGui::DestroyContext();
+
+    DestroyQNXWindow(&window);
+
+    return 0;
+}
+
+// Helper functions
+
+bool CreateQNXWindow(QNXWindow* window)
+{
+    if (screen_create_context(&window->Context, 0) != 0 ||
+        screen_create_window(&window->Window, window->Context) != 0 ||
+        screen_create_event(&window->Event) != 0)
+    {
+        fprintf(stderr, "QNX Screen initialization failed: %s\n", strerror(errno));
+        return false;
+    }
+
+    // A newly created QNX Screen window reports the fullscreen dimensions.
+    if (screen_get_window_property_iv(window->Window, SCREEN_PROPERTY_SIZE, window->Size) != 0 || window->Size[0] <= 0 || window->Size[1] <= 0)
+    {
+        fprintf(stderr, "Failed to obtain QNX Screen window size: %s\n", strerror(errno));
+        return false;
+    }
+
+    const int usage = SCREEN_USAGE_OPENGL_ES2 | SCREEN_USAGE_OPENGL_ES3 | SCREEN_USAGE_NATIVE;
+    const int transparency = SCREEN_TRANSPARENCY_NONE;
+    const int swap_interval = 1;
+    if (screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_USAGE, &usage) != 0 ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_SIZE, window->Size) != 0 ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_TRANSPARENCY, &transparency) != 0 ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_SWAP_INTERVAL, &swap_interval) != 0)
+    {
+        fprintf(stderr, "Failed to configure QNX Screen window: %s\n", strerror(errno));
+        return false;
+    }
+
+    window->Display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    if (window->Display == EGL_NO_DISPLAY || eglInitialize(window->Display, nullptr, nullptr) != EGL_TRUE || eglBindAPI(EGL_OPENGL_ES_API) != EGL_TRUE)
+    {
+        fprintf(stderr, "EGL initialization failed: 0x%04x\n", eglGetError());
+        return false;
+    }
+
+    const EGLint config_attributes[] =
+    {
+        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT,
+        EGL_RED_SIZE, 8,
+        EGL_GREEN_SIZE, 8,
+        EGL_BLUE_SIZE, 8,
+        EGL_ALPHA_SIZE, 8,
+        EGL_DEPTH_SIZE, 24,
+        EGL_STENCIL_SIZE, 8,
+        EGL_NONE
+    };
+    EGLConfig config = nullptr;
+    EGLint config_count = 0;
+    if (eglChooseConfig(window->Display, config_attributes, &config, 1, &config_count) != EGL_TRUE || config_count == 0)
+    {
+        fprintf(stderr, "eglChooseConfig() failed: 0x%04x\n", eglGetError());
+        return false;
+    }
+
+    EGLint native_visual = 0;
+    if (eglGetConfigAttrib(window->Display, config, EGL_NATIVE_VISUAL_ID, &native_visual) != EGL_TRUE ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_FORMAT, &native_visual) != 0 ||
+        screen_create_window_buffers(window->Window, 2) != 0)
+    {
+        fprintf(stderr, "Failed to create QNX Screen buffers: %s\n", strerror(errno));
+        return false;
+    }
+
+    const EGLint context_attributes[] = { EGL_CONTEXT_CLIENT_VERSION, 3, EGL_NONE };
+    window->GLContext = eglCreateContext(window->Display, config, EGL_NO_CONTEXT, context_attributes);
+    window->GLSurface = eglCreateWindowSurface(window->Display, config, window->Window, nullptr);
+    if (window->GLContext == EGL_NO_CONTEXT || window->GLSurface == EGL_NO_SURFACE ||
+        eglMakeCurrent(window->Display, window->GLSurface, window->GLSurface, window->GLContext) != EGL_TRUE ||
+        eglSwapInterval(window->Display, 1) != EGL_TRUE)
+    {
+        fprintf(stderr, "EGL context creation failed: 0x%04x\n", eglGetError());
+        return false;
+    }
+
+    const int visible = 1;
+    if (screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_VISIBLE, &visible) != 0)
+    {
+        fprintf(stderr, "Failed to show QNX Screen window: %s\n", strerror(errno));
+        return false;
+    }
+    return true;
+}
+
+void DestroyQNXWindow(QNXWindow* window)
+{
+    if (window->Display != EGL_NO_DISPLAY)
+    {
+        eglMakeCurrent(window->Display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+        if (window->GLSurface != EGL_NO_SURFACE)
+            eglDestroySurface(window->Display, window->GLSurface);
+        if (window->GLContext != EGL_NO_CONTEXT)
+            eglDestroyContext(window->Display, window->GLContext);
+        eglTerminate(window->Display);
+    }
+    if (window->Event != nullptr)
+        screen_destroy_event(window->Event);
+    if (window->Window != nullptr)
+        screen_destroy_window(window->Window);
+    if (window->Context != nullptr)
+        screen_destroy_context(window->Context);
+}
+
+bool ProcessQNXEvents(QNXWindow* window)
+{
+    for (;;)
+    {
+        if (screen_get_event(window->Context, window->Event, 0) != 0)
+            return false;
+
+        int type = SCREEN_EVENT_NONE;
+        if (screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_TYPE, &type) != 0)
+            return false;
+        if (type == SCREEN_EVENT_NONE)
+            return true;
+
+        ImGui_ImplQNX_ProcessEvent(window->Event);
+        if (type == SCREEN_EVENT_CLOSE)
+            return false;
+        if (type == SCREEN_EVENT_KEYBOARD)
+        {
+            int flags = 0;
+            int key_cap = 0;
+            if (screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_FLAGS, &flags) == 0 &&
+                screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_KEY_CAP, &key_cap) == 0 &&
+                (flags & SCREEN_FLAG_KEY_DOWN) != 0 && key_cap == KEYCODE_ESCAPE)
+                return false;
+        }
+    }
+}
+

examples/example_qnx_opengl3/nto/Makefile

@@ -0,0 +1,8 @@
+LIST=CPU
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_opengl3/nto/aarch64/Makefile

@@ -0,0 +1,8 @@
+LIST=VARIANT
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_opengl3/nto/aarch64/o.le/Makefile

@@ -0,0 +1 @@
+include ../../../common.mk

examples/example_qnx_opengl3/nto/x86_64/Makefile

@@ -0,0 +1,8 @@
+LIST=VARIANT
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_opengl3/nto/x86_64/o/Makefile

@@ -0,0 +1 @@
+include ../../../common.mk

examples/example_qnx_vulkan/Makefile

@@ -0,0 +1,2 @@
+LIST=OS
+include recurse.mk

examples/example_qnx_vulkan/README.md

@@ -0,0 +1,29 @@
+# Dear ImGui QNX Screen + Vulkan example
+
+This example uses:
+
+- `imgui_impl_qnx.cpp` as the QNX Screen platform backend
+- the unmodified `imgui_impl_vulkan.cpp` renderer backend
+- `vkCreateScreenSurfaceQNX()` and `VK_QNX_screen_surface`
+
+No separate Screen/Vulkan renderer backend is required. The QNX-specific work
+is limited to the Screen platform backend, native window setup, and Vulkan WSI
+surface creation.
+
+## Build
+
+Load the QNX SDP environment, then run:
+
+```sh
+cd examples/example_qnx_vulkan
+make
+```
+
+The build defines `VK_USE_PLATFORM_SCREEN_QNX` and links `libvulkan` and
+`libscreen`.
+
+## Input and resize
+
+The application forwards Screen input events to `ImGui_ImplQNX_ProcessEvent()`.
+It recreates the Vulkan swapchain when the Screen window size changes or Vulkan
+reports `VK_ERROR_OUT_OF_DATE_KHR` / `VK_SUBOPTIMAL_KHR`. Escape exits.

examples/example_qnx_vulkan/common.mk

@@ -0,0 +1,31 @@
+ifndef QCONFIG
+QCONFIG=qconfig.mk
+endif
+include $(QCONFIG)
+
+NAME=example_qnx_vulkan
+
+SRCS = \
+    main.cpp \
+    imgui.cpp \
+    imgui_demo.cpp \
+    imgui_draw.cpp \
+    imgui_tables.cpp \
+    imgui_widgets.cpp \
+    imgui_impl_qnx.cpp \
+    imgui_impl_vulkan.cpp
+
+EXTRA_SRCVPATH += $(PROJECT_ROOT)/../.. $(PROJECT_ROOT)/../../backends
+EXTRA_INCVPATH += $(PROJECT_ROOT)/../.. $(PROJECT_ROOT)/../../backends
+
+CXXFLAGS += -std=gnu++11 -DVK_USE_PLATFORM_SCREEN_QNX=1
+LIBS += vulkan screen m
+
+INSTALLDIR=$(firstword $(INSTALLDIR_$(OS)) usr/bin)
+
+define PINFO
+PINFO DESCRIPTION=Dear ImGui QNX Screen and Vulkan example
+endef
+
+include $(MKFILES_ROOT)/qmacros.mk
+include $(MKFILES_ROOT)/qtargets.mk

examples/example_qnx_vulkan/nto/Makefile

@@ -0,0 +1,8 @@
+LIST=CPU
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_vulkan/nto/aarch64/Makefile

@@ -0,0 +1,8 @@
+LIST=VARIANT
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_vulkan/nto/aarch64/o.le/Makefile

@@ -0,0 +1 @@
+include ../../../common.mk

examples/example_qnx_vulkan/nto/x86_64/Makefile

@@ -0,0 +1,8 @@
+LIST=VARIANT
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_vulkan/nto/x86_64/o/Makefile

@@ -0,0 +1 @@
+include ../../../common.mk

imgui.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.92.9b
+// dear imgui, v1.93.0 WIP
 // (main code and documentation)
 
 // Help:
@@ -402,6 +402,8 @@ IMPLEMENTING SUPPORT for ImGuiBackendFlags_RendererHasTextures:
                             you may use GetMainViewport()->Pos to offset hard-coded positions, e.g. SetNextWindowPos(GetMainViewport()->Pos)
                           - likewise io.MousePos and GetMousePos() will use OS coordinates.
                             If you query mouse positions to interact with non-imgui coordinates you will need to offset them, e.g. subtract GetWindowViewport()->Pos.
+ - 2026/08/03 (1.93.0) - Style: obsoleted `style.CurveTessellationTol (default 1.25)` which was in Pixels² unit in favor of `style.CurveTesselationMaxError` (default 1.12)` which is in Pixels unit.
+                         - style.CurveTesselationMaxError == sqrf(style.CurveTessellationTol).
  - 2026/07/20 (1.92.9) - DragXXX, SliderXXX, InputScalar: with `ImGuiItemFlags_LiveEditOnInputScalar` now defaulting to being disabled:
                          inputting a value with the keyboard doesn't write intermediate values to backing variable. (#9476)
                          - Before: DragFloat() with user typing "123" --> write back 1, then 12, then 123.
@@ -1600,10 +1602,12 @@ ImGuiStyle::ImGuiStyle()
     DockingNodeHasCloseButton   = true;             // Docking nodes have their own CloseButton() to close all docked windows.
     DockingSeparatorSize        = 2.0f;             // Thickness of resizing border between docked windows
     MouseCursorScale            = 1.0f;             // Scale software rendered mouse cursor (when io.MouseDrawCursor is enabled). May be removed later.
+
+    // Rendering & Tesselation
     AntiAliasedLines            = true;             // Enable anti-aliased lines/borders. Disable if you are really tight on CPU/GPU.
     AntiAliasedLinesUseTex      = true;             // Enable anti-aliased lines/borders using textures where possible. Require backend to render with bilinear filtering (NOT point/nearest filtering).
     AntiAliasedFill             = true;             // Enable anti-aliased filled shapes (rounded rectangles, circles, etc.).
-    CurveTessellationTol        = 1.25f;            // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
+    CurveTessellationMaxError   = 1.12f;            // Maximum error (in pixels) when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
     CircleTessellationMaxError  = 0.30f;            // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
 
     // Behaviors
@@ -1616,6 +1620,9 @@ ImGuiStyle::ImGuiStyle()
     // [Internal]
     _MainScale                  = 1.0f;
     _NextFrameFontSizeBase      = 0.0f;
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    CurveTessellationTol        = 0.0f;             // Old CurveTessellationTol = CurveTessellationMaxError*CurveTessellationMaxError.
+#endif
 
     // Default theme
     ImGui::StyleColorsDark(this);
@@ -2165,7 +2172,7 @@ ImVec2 ImBezierCubicClosestPoint(const ImVec2& p1, const ImVec2& p2, const ImVec
 }
 
 // Closely mimics PathBezierToCasteljau() in imgui_draw.cpp
-static void ImBezierCubicClosestPointCasteljauStep(const ImVec2& p, ImVec2& p_closest, ImVec2& p_last, float& p_closest_dist2, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)
+static void ImBezierCubicClosestPointCasteljauStep(const ImVec2& p, ImVec2& p_closest, ImVec2& p_last, float& p_closest_dist2, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float max_error_sqr, int level)
 {
     float dx = x4 - x1;
     float dy = y4 - y1;
@@ -2173,7 +2180,7 @@ static void ImBezierCubicClosestPointCasteljauStep(const ImVec2& p, ImVec2& p_cl
     float d3 = ((x3 - x4) * dy - (y3 - y4) * dx);
     d2 = (d2 >= 0) ? d2 : -d2;
     d3 = (d3 >= 0) ? d3 : -d3;
-    if ((d2 + d3) * (d2 + d3) < tess_tol * (dx * dx + dy * dy))
+    if ((d2 + d3) * (d2 + d3) < max_error_sqr * (dx * dx + dy * dy))
     {
         ImVec2 p_current(x4, y4);
         ImVec2 p_line = ImLineClosestPoint(p_last, p_current, p);
@@ -2193,20 +2200,21 @@ static void ImBezierCubicClosestPointCasteljauStep(const ImVec2& p, ImVec2& p_cl
         float x123 = (x12 + x23)*0.5f,    y123 = (y12 + y23)*0.5f;
         float x234 = (x23 + x34)*0.5f,    y234 = (y23 + y34)*0.5f;
         float x1234 = (x123 + x234)*0.5f, y1234 = (y123 + y234)*0.5f;
-        ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, x1, y1, x12, y12, x123, y123, x1234, y1234, tess_tol, level + 1);
-        ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, x1234, y1234, x234, y234, x34, y34, x4, y4, tess_tol, level + 1);
+        ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, x1, y1, x12, y12, x123, y123, x1234, y1234, max_error_sqr, level + 1);
+        ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, x1234, y1234, x234, y234, x34, y34, x4, y4, max_error_sqr, level + 1);
     }
 }
 
-// tess_tol is generally the same value you would find in ImGui::GetStyle().CurveTessellationTol
+// tess_tol is generally the same value you would find in ImGui::GetStyle().CurveTessellationMaxError
 // Because those ImXXX functions are lower-level than ImGui:: we cannot access this value automatically.
-ImVec2 ImBezierCubicClosestPointCasteljau(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, float tess_tol)
+ImVec2 ImBezierCubicClosestPointCasteljau(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, float max_error)
 {
-    IM_ASSERT(tess_tol > 0.0f);
+    IM_ASSERT(max_error > 0.0f);
     ImVec2 p_last = p1;
     ImVec2 p_closest;
     float p_closest_dist2 = FLT_MAX;
-    ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, tess_tol, 0);
+    float max_error_sqr = max_error * max_error;
+    ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, max_error_sqr, 0);
     return p_closest;
 }
 
@@ -4309,7 +4317,7 @@ ImGuiContext::ImGuiContext(ImFontAtlas* shared_font_atlas)
     Font = NULL;
     FontBaked = NULL;
     FontSize = FontSizeBase = FontBakedScale = CurrentDpiScale = 0.0f;
-    FontRasterizerDensity = 1.0f;
+    CurrentPixelDensity = 1.0f;
     IO.Fonts = shared_font_atlas ? shared_font_atlas : IM_NEW(ImFontAtlas)();
     if (shared_font_atlas == NULL)
         IO.Fonts->OwnerContext = this;
@@ -4810,7 +4818,7 @@ static void SetCurrentWindow(ImGuiWindow* window)
         if (g.IO.BackendFlags & ImGuiBackendFlags_RendererHasTextures)
         {
             ImGuiViewport* viewport = window->Viewport;
-            g.FontRasterizerDensity = (viewport->FramebufferScale.x != 0.0f) ? viewport->FramebufferScale.x : g.IO.DisplayFramebufferScale.x; // == SetFontRasterizerDensity()
+            g.CurrentPixelDensity = (viewport->FramebufferScale.x != 0.0f) ? viewport->FramebufferScale.x : g.IO.DisplayFramebufferScale.x; // == SetPixelDensity()
         }
         const bool backup_skip_items = window->SkipItems;
         window->SkipItems = false;
@@ -5419,6 +5427,7 @@ static ImDrawList* GetViewportBgFgDrawList(ImGuiViewportP* viewport, size_t draw
     if (viewport->BgFgDrawListsLastTimeActive[drawlist_no] != (float)g.Time)
     {
         draw_list->_ResetForNewFrame();
+        draw_list->_SetPixelDensity(viewport->FramebufferScale.x);
         draw_list->PushTexture(g.IO.Fonts->TexRef);
         draw_list->PushClipRect(viewport->Pos, viewport->Pos + viewport->Size, false);
         viewport->BgFgDrawListsLastTimeActive[drawlist_no] = (float)g.Time;
@@ -5760,7 +5769,7 @@ static void SetupDrawListSharedData()
     for (ImGuiViewportP* viewport : g.Viewports)
         virtual_space.Add(viewport->GetMainRect());
     g.DrawListSharedData.ClipRectFullscreen = virtual_space.ToVec4();
-    g.DrawListSharedData.CurveTessellationTol = g.Style.CurveTessellationTol;
+    g.DrawListSharedData.CurveTessellationMaxError = g.Style.CurveTessellationMaxError;
     g.DrawListSharedData.SetCircleTessellationMaxError(g.Style.CircleTessellationMaxError);
     g.DrawListSharedData.InitialFlags = ImDrawListFlags_None;
     if (g.Style.AntiAliasedLines)
@@ -5771,7 +5780,6 @@ static void SetupDrawListSharedData()
         g.DrawListSharedData.InitialFlags |= ImDrawListFlags_AntiAliasedFill;
     if (g.IO.BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset)
         g.DrawListSharedData.InitialFlags |= ImDrawListFlags_AllowVtxOffset;
-    g.DrawListSharedData.InitialFringeScale = 1.0f; // FIXME-DPI: Change this for some DPI scaling experiments.
 }
 
 void ImGui::NewFrame()
@@ -8578,6 +8586,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
 
         // Setup draw list and outer clipping rectangle
         IM_ASSERT(window->DrawList->CmdBuffer.Size == 1 && window->DrawList->CmdBuffer[0].ElemCount == 0);
+        window->DrawList->_SetPixelDensity(window->Viewport->FramebufferScale.x);
         window->DrawList->PushTexture(g.Font->OwnerAtlas->TexRef);
         PushClipRect(host_rect.Min, host_rect.Max, false);
 
@@ -8755,7 +8764,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         // Set default BgClickFlags
         // This is set at the end of this function, so UpdateWindowManualResize()/ClampWindowPos() may use last-frame value if overridden by user code.
         // FIXME: The general intent is that we will later expose config options to default to enable scrolling + select scrolling mouse button.
-        window->BgClickFlags = (flags & ImGuiWindowFlags_ChildWindow) ? parent_window->BgClickFlags : (g.IO.ConfigWindowsMoveFromTitleBarOnly ? ImGuiWindowBgClickFlags_None : ImGuiWindowBgClickFlags_Move);
+        window->BgClickFlags = (flags & ImGuiWindowFlags_ChildWindow) ? parent_window->BgClickFlags : (g.IO.ConfigWindowsMoveFromTitleBarOnly ? ImGuiWindowBgClickFlags_None : ImGuiWindowBgClickFlags_Move); // -V1004
 
         // We fill last item data based on Title Bar/Tab, in order for IsItemHovered() and IsItemActive() to be usable after Begin().
         // This is useful to allow creating context menus on title bar only, etc.
@@ -9660,7 +9669,7 @@ bool ImGui::IsRectVisible(const ImVec2& rect_min, const ImVec2& rect_max)
 // - UnregisterFontAtlas() [Internal]
 // - SetCurrentFont() [Internal]
 // - UpdateCurrentFontSize() [Internal]
-// - SetFontRasterizerDensity() [Internal]
+// - SetPixelDensity() [Internal]
 // - PushFont()
 // - PopFont()
 //-----------------------------------------------------------------------------
@@ -9853,7 +9862,7 @@ void ImGui::UpdateCurrentFontSize(float restore_font_size_after_scaling)
     final_size = GetRoundedFontSize(final_size);
     final_size = ImClamp(final_size, 1.0f, IMGUI_FONT_SIZE_MAX);
     if (g.Font != NULL && (g.IO.BackendFlags & ImGuiBackendFlags_RendererHasTextures))
-        g.Font->CurrentRasterizerDensity = g.FontRasterizerDensity;
+        g.Font->CurrentRasterizerDensity = g.CurrentPixelDensity;
 
     g.FontSize = final_size;
     g.DrawListSharedData.FontSize = g.FontSize;
@@ -9877,13 +9886,13 @@ void ImGui::UpdateCurrentFontSize(float restore_font_size_after_scaling)
 
 // Exposed in case user may want to override setting density.
 // IMPORTANT: Begin()/End() is overriding density. Be considerate of this you change it.
-void ImGui::SetFontRasterizerDensity(float rasterizer_density)
+void ImGui::SetPixelDensity(float pixel_density)
 {
     ImGuiContext& g = *GImGui;
     IM_ASSERT(g.IO.BackendFlags & ImGuiBackendFlags_RendererHasTextures);
-    if (g.FontRasterizerDensity == rasterizer_density)
+    if (g.CurrentPixelDensity == pixel_density)
         return;
-    g.FontRasterizerDensity = rasterizer_density;
+    g.CurrentPixelDensity = pixel_density;
     UpdateCurrentFontSize(0.0f);
 }
 
@@ -11727,7 +11736,7 @@ static void ImGui::ErrorCheckNewFrameSanityChecks()
     IM_ASSERT((g.IO.DeltaTime > 0.0f || g.FrameCount == 0)              && "Need a positive DeltaTime!");
     IM_ASSERT((g.FrameCount == 0 || g.FrameCountEnded == g.FrameCount)  && "Forgot to call Render() or EndFrame() at the end of the previous frame?");
     IM_ASSERT(g.IO.DisplaySize.x >= 0.0f && g.IO.DisplaySize.y >= 0.0f  && "Invalid DisplaySize value!");
-    IM_ASSERT(g.Style.CurveTessellationTol > 0.0f                       && "Invalid style setting!");
+    IM_ASSERT(g.Style.CurveTessellationMaxError > 0.0f                  && "Invalid style setting!");
     IM_ASSERT(g.Style.CircleTessellationMaxError > 0.0f                 && "Invalid style setting!");
     IM_ASSERT(g.Style.Alpha >= 0.0f && g.Style.Alpha <= 1.0f            && "Invalid style setting!"); // Allows us to avoid a few clamps in color computations
     IM_ASSERT(g.Style.WindowMinSize.x >= 1.0f && g.Style.WindowMinSize.y >= 1.0f && "Invalid style setting!");
@@ -11777,6 +11786,11 @@ static void ImGui::ErrorCheckNewFrameSanityChecks()
         g.PlatformIO.Platform_GetClipboardTextFn = [](ImGuiContext* ctx) { return ctx->IO.GetClipboardTextFn(ctx->IO.ClipboardUserData); };
     if (g.IO.SetClipboardTextFn != NULL && (g.PlatformIO.Platform_SetClipboardTextFn == NULL || g.PlatformIO.Platform_SetClipboardTextFn == Platform_SetClipboardTextFn_DefaultImpl))
         g.PlatformIO.Platform_SetClipboardTextFn = [](ImGuiContext* ctx, const char* text) { return ctx->IO.SetClipboardTextFn(ctx->IO.ClipboardUserData, text); };
+
+    // Remap legacy CurveTessellationTol into CurveTessellationMaxError (OBSOLETED in 1.93.0, August 2026)
+    if (g.Style.CurveTessellationTol != 0.0f)
+        g.Style.CurveTessellationMaxError = ImSqrt(g.Style.CurveTessellationTol);
+    g.Style.CurveTessellationTol = 0.0f;
 #endif
 
     // Perform simple check: error if Docking or Viewport are enabled _exactly_ on frame 1 (instead of frame 0 or later), which is a common error leading to loss of .ini data.

imgui.h

@@ -1,4 +1,4 @@
-// dear imgui, v1.92.9b
+// dear imgui, v1.93.0 WIP
 // (headers)
 
 // Help:
@@ -29,8 +29,8 @@
 
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
-#define IMGUI_VERSION       "1.92.9b"
-#define IMGUI_VERSION_NUM   19291
+#define IMGUI_VERSION       "1.93.0 WIP"
+#define IMGUI_VERSION_NUM   19292
 #define IMGUI_HAS_TABLE             // Added BeginTable() - from IMGUI_VERSION_NUM >= 18000
 #define IMGUI_HAS_TEXTURES          // Added ImGuiBackendFlags_RendererHasTextures - from IMGUI_VERSION_NUM >= 19198
 #define IMGUI_HAS_VIEWPORT          // In 'docking' WIP branch.
@@ -2461,10 +2461,12 @@ struct ImGuiStyle
     bool        DockingNodeHasCloseButton;  // Docking node has their own CloseButton() to close all docked windows.
     float       DockingSeparatorSize;       // Thickness of resizing border between docked windows
     float       MouseCursorScale;           // Scale software rendered mouse cursor (when io.MouseDrawCursor is enabled). We apply per-monitor DPI scaling over this scale. May be removed later.
+
+    // Rendering & Tesselation
     bool        AntiAliasedLines;           // Enable anti-aliased lines/borders. Disable if you are really tight on CPU/GPU. Latched at the beginning of the frame (copied to ImDrawList).
     bool        AntiAliasedLinesUseTex;     // Enable anti-aliased lines/borders using textures where possible. Require backend to render with bilinear filtering (NOT point/nearest filtering). Latched at the beginning of the frame (copied to ImDrawList).
     bool        AntiAliasedFill;            // Enable anti-aliased edges around filled shapes (rounded rectangles, circles, etc.). Disable if you are really tight on CPU/GPU. Latched at the beginning of the frame (copied to ImDrawList).
-    float       CurveTessellationTol;       // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
+    float       CurveTessellationMaxError;  // Maximum error (in pixels) when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
     float       CircleTessellationMaxError; // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
 
     // Colors
@@ -2488,6 +2490,7 @@ struct ImGuiStyle
 
     // Obsolete names
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    float       CurveTessellationTol;       // [OBSOLETE] Old CurveTessellationTol = New CurveTessellationMaxError*CurveTessellationMaxError. // Changed in 1.93.0
     // TabMinWidthForCloseButton = TabCloseButtonMinWidthUnselected // Renamed in 1.91.9.
 #endif
 };
@@ -3477,7 +3480,8 @@ struct ImDrawList
     ImVector<ImVec4>        _ClipRectStack;     // [Internal]
     ImVector<ImTextureRef>  _TextureStack;      // [Internal]
     ImVector<ImU8>          _CallbacksDataBuf;  // [Internal]
-    float                   _FringeScale;       // [Internal] anti-alias fringe is scaled by this value, this helps to keep things sharp while zooming at vertex buffer content
+    float                   _FringeScale;       // [Internal] anti-alias fringe is scaled by this value, this helps to keep things sharp while zooming at vertex buffer content.
+    float                   _InvFringeScale;    // [internal] 1.0 / _FringeScale // FIXME: Consider renaming to _PixelDensity.
     const char*             _OwnerName;         // Pointer to owner window's name for debugging
 
     // If you want to create ImDrawList instances, pass them ImGui::GetDrawListSharedData().
@@ -3611,6 +3615,7 @@ struct ImDrawList
     // [Internal helpers]
     IMGUI_API void  _SetDrawListSharedData(ImDrawListSharedData* data);
     IMGUI_API void  _ResetForNewFrame();
+    IMGUI_API void  _SetPixelDensity(float pixel_density);
     IMGUI_API void  _ClearFreeMemory();
     IMGUI_API void  _PopUnusedDrawCmd();
     IMGUI_API void  _TryMergeDrawCmds();

imgui_demo.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.92.9b
+// dear imgui, v1.93.0 WIP
 // (demo code)
 
 // Help:
@@ -8942,8 +8942,9 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
 
             Checkbox("Anti-aliased fill", &style.AntiAliasedFill);
             PushItemWidth(GetFontSize() * 8);
-            DragFloat("Curve Tessellation Tolerance", &style.CurveTessellationTol, 0.02f, 0.10f, 10.0f, "%.2f");
-            if (style.CurveTessellationTol < 0.10f) style.CurveTessellationTol = 0.10f;
+            DragFloat("Curve Tessellation Max Error", &style.CurveTessellationMaxError, 0.02f, 0.10f, 10.0f, "%.2f");
+            if (style.CurveTessellationMaxError < 0.10f)
+                style.CurveTessellationMaxError = 0.10f;
 
             // When editing the "Circle Segment Max Error" value, draw a preview of its effect on auto-tessellated circles.
             DragFloat("Circle Tessellation Max Error", &style.CircleTessellationMaxError , 0.005f, 0.10f, 5.0f, "%.2f", ImGuiSliderFlags_AlwaysClamp);

imgui_draw.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.92.9b
+// dear imgui, v1.93.0 WIP
 // (drawing and font code)
 
 /*
@@ -402,7 +402,6 @@ void ImGui::StyleColorsLight(ImGuiStyle* dst)
 ImDrawListSharedData::ImDrawListSharedData()
 {
     memset((void*)this, 0, sizeof(*this));
-    InitialFringeScale = 1.0f;
     for (int i = 0; i < IM_COUNTOF(ArcFastVtx); i++)
     {
         const float a = ((float)i * 2 * IM_PI) / (float)IM_COUNTOF(ArcFastVtx);
@@ -479,7 +478,7 @@ void ImDrawList::_ResetForNewFrame()
     _Path.resize(0);
     _Splitter.Clear();
     CmdBuffer.push_back(ImDrawCmd());
-    _FringeScale = _Data->InitialFringeScale;
+    // Caller needs to bet _SetPixelDensity() as well.
 }
 
 void ImDrawList::_ClearFreeMemory()
@@ -661,6 +660,7 @@ void ImDrawList::_OnChangedVtxOffset()
 int ImDrawList::_CalcCircleAutoSegmentCount(float radius) const
 {
     // Automatic segment count
+    radius *= _InvFringeScale;
     const int radius_idx = (int)(radius + 0.999f); // ceil to never reduce accuracy
     if (radius_idx >= 0 && radius_idx < IM_COUNTOF(_Data->CircleSegmentCounts))
         return _Data->CircleSegmentCounts[radius_idx]; // Use cached value
@@ -726,6 +726,13 @@ void ImDrawList::_SetTexture(ImTextureRef tex_ref)
     _OnChangedTexture();
 }
 
+void ImDrawList::_SetPixelDensity(float pixel_density)
+{
+    IM_ASSERT(pixel_density > 0.0f);
+    _FringeScale = 1.0f / pixel_density;
+    _InvFringeScale = pixel_density;
+}
+
 // Reserve space for a number of vertices and indices.
 // You must finish filling your reserved data before calling PrimReserve() again, as it may reallocate or
 // submit the intermediate results. PrimUnreserve() can be used to release unused allocations.
@@ -1376,7 +1383,7 @@ ImVec2 ImBezierQuadraticCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p
 }
 
 // Closely mimics ImBezierCubicClosestPointCasteljau() in imgui.cpp
-static void PathBezierCubicCurveToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)
+static void PathBezierCubicCurveToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float max_error_sqr, int level)
 {
     float dx = x4 - x1;
     float dy = y4 - y1;
@@ -1384,7 +1391,7 @@ static void PathBezierCubicCurveToCasteljau(ImVector<ImVec2>* path, float x1, fl
     float d3 = (x3 - x4) * dy - (y3 - y4) * dx;
     d2 = (d2 >= 0) ? d2 : -d2;
     d3 = (d3 >= 0) ? d3 : -d3;
-    if ((d2 + d3) * (d2 + d3) < tess_tol * (dx * dx + dy * dy))
+    if ((d2 + d3) * (d2 + d3) < max_error_sqr * (dx * dx + dy * dy))
     {
         path->push_back(ImVec2(x4, y4));
     }
@@ -1396,16 +1403,16 @@ static void PathBezierCubicCurveToCasteljau(ImVector<ImVec2>* path, float x1, fl
         float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f;
         float x234 = (x23 + x34) * 0.5f, y234 = (y23 + y34) * 0.5f;
         float x1234 = (x123 + x234) * 0.5f, y1234 = (y123 + y234) * 0.5f;
-        PathBezierCubicCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, x1234, y1234, tess_tol, level + 1);
-        PathBezierCubicCurveToCasteljau(path, x1234, y1234, x234, y234, x34, y34, x4, y4, tess_tol, level + 1);
+        PathBezierCubicCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, x1234, y1234, max_error_sqr, level + 1);
+        PathBezierCubicCurveToCasteljau(path, x1234, y1234, x234, y234, x34, y34, x4, y4, max_error_sqr, level + 1);
     }
 }
 
-static void PathBezierQuadraticCurveToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float tess_tol, int level)
+static void PathBezierQuadraticCurveToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float max_error_sqr, int level)
 {
     float dx = x3 - x1, dy = y3 - y1;
     float det = (x2 - x3) * dy - (y2 - y3) * dx;
-    if (det * det * 4.0f < tess_tol * (dx * dx + dy * dy))
+    if (det * det * 4.0f < max_error_sqr * (dx * dx + dy * dy))
     {
         path->push_back(ImVec2(x3, y3));
     }
@@ -1414,8 +1421,8 @@ static void PathBezierQuadraticCurveToCasteljau(ImVector<ImVec2>* path, float x1
         float x12 = (x1 + x2) * 0.5f, y12 = (y1 + y2) * 0.5f;
         float x23 = (x2 + x3) * 0.5f, y23 = (y2 + y3) * 0.5f;
         float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f;
-        PathBezierQuadraticCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, tess_tol, level + 1);
-        PathBezierQuadraticCurveToCasteljau(path, x123, y123, x23, y23, x3, y3, tess_tol, level + 1);
+        PathBezierQuadraticCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, max_error_sqr, level + 1);
+        PathBezierQuadraticCurveToCasteljau(path, x123, y123, x23, y23, x3, y3, max_error_sqr, level + 1);
     }
 }
 
@@ -1424,8 +1431,9 @@ void ImDrawList::PathBezierCubicCurveTo(const ImVec2& p2, const ImVec2& p3, cons
     ImVec2 p1 = _Path.back();
     if (num_segments == 0)
     {
-        IM_ASSERT(_Data->CurveTessellationTol > 0.0f);
-        PathBezierCubicCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, _Data->CurveTessellationTol, 0); // Auto-tessellated
+        IM_ASSERT(_Data->CurveTessellationMaxError > 0.0f);
+        float max_error_sqr = (_Data->CurveTessellationMaxError * _FringeScale) * (_Data->CurveTessellationMaxError * _FringeScale);
+        PathBezierCubicCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, max_error_sqr, 0); // Auto-tessellated
     }
     else
     {
@@ -1440,8 +1448,9 @@ void ImDrawList::PathBezierQuadraticCurveTo(const ImVec2& p2, const ImVec2& p3,
     ImVec2 p1 = _Path.back();
     if (num_segments == 0)
     {
-        IM_ASSERT(_Data->CurveTessellationTol > 0.0f);
-        PathBezierQuadraticCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, _Data->CurveTessellationTol, 0);// Auto-tessellated
+        IM_ASSERT(_Data->CurveTessellationMaxError > 0.0f);
+        float max_error_sqr = (_Data->CurveTessellationMaxError * _FringeScale) * (_Data->CurveTessellationMaxError * _FringeScale);
+        PathBezierQuadraticCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, max_error_sqr, 0);// Auto-tessellated
     }
     else
     {
@@ -3174,11 +3183,15 @@ const char* ImGui_GetDefaultCompressedFontDataProggyForever(int* out_size);
 // This duplicates some of the logic in UpdateFontsNewFrame() which is a bit chicken-and-eggy/tricky to extract due to variety of codepaths and possible initialization ordering.
 static float GetExpectedContextFontSize(ImGuiContext* ctx)
 {
-    return ((ctx->Style.FontSizeBase > 0.0f) ? ctx->Style.FontSizeBase : 13.0f) * ctx->Style.FontScaleMain * ctx->Style.FontScaleDpi;
+    float fb_scale = (ctx->IO.DisplayFramebufferScale.x != 0.0f) ? ctx->IO.DisplayFramebufferScale.x : 1.0f;
+    if (ctx->IO.DisplayFramebufferScale.x == 1.0f && ctx->IO.DisplaySize.x <= 0.0f && ctx->IO.ConfigMacOSXBehaviors)
+        fb_scale = 2.0f; // If called before backend had a chance to init DisplayFramebufferScale. default to expecting Retina.
+    float scale = ctx->Style.FontScaleMain * ctx->Style.FontScaleDpi * fb_scale;
+    return ((ctx->Style.FontSizeBase > 0.0f) ? ctx->Style.FontSizeBase : 13.0f) * scale;
 }
 
 // Legacy function with heuristic to select Pixel or Vector font.
-// The selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi) reaching a small threshold at the time of adding the default font.
+// The selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi * io.DisplayFramebufferScale) reaching a small threshold at the time of adding the default font.
 // Prefer calling AddFontDefaultVector() or AddFontDefaultBitmap() based on your own logic.
 ImFont* ImFontAtlas::AddFontDefault(const ImFontConfig* font_cfg)
 {

imgui_internal.h

@@ -1,4 +1,4 @@
-// dear imgui, v1.92.9b
+// dear imgui, v1.93.0 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.
@@ -560,8 +560,8 @@ IM_MSVC_RUNTIME_CHECKS_RESTORE
 
 // Helpers: Geometry
 IMGUI_API ImVec2     ImBezierCubicCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, float t);
-IMGUI_API ImVec2     ImBezierCubicClosestPoint(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, int num_segments);       // For curves with explicit number of segments
-IMGUI_API ImVec2     ImBezierCubicClosestPointCasteljau(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, float tess_tol);// For auto-tessellated curves you can use tess_tol = style.CurveTessellationTol
+IMGUI_API ImVec2     ImBezierCubicClosestPoint(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, int num_segments);        // For curves with explicit number of segments
+IMGUI_API ImVec2     ImBezierCubicClosestPointCasteljau(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, float max_error);// For auto-tessellated curves you can use max_error = style.CurveTessellationMaxError
 IMGUI_API ImVec2     ImBezierQuadraticCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, float t);
 IMGUI_API ImVec2     ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p);
 IMGUI_API bool       ImTriangleContainsPoint(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& p);
@@ -906,9 +906,8 @@ struct IMGUI_API ImDrawListSharedData
     ImFont*         Font;                       // Current font (used for simplified AddText overload)
     float           FontSize;                   // Current font size (used for for simplified AddText overload)
     float           FontScale;                  // Current font scale (== FontSize / Font->FontSize)
-    float           CurveTessellationTol;       // Tessellation tolerance when using PathBezierCurveTo()
+    float           CurveTessellationMaxError;  // Tessellation tolerance when using PathBezierCurveTo()
     float           CircleTessellationMaxError; // Number of circle segments to use per pixel of radius for AddCircle() etc
-    float           InitialFringeScale;         // Initial scale to apply to AA fringe
     ImDrawListFlags InitialFlags;               // Initial flags at the beginning of the frame (it is possible to alter flags on a per-drawlist basis afterwards)
     ImVec4          ClipRectFullscreen;         // Value for PushClipRectFullscreen()
     ImVector<ImVec2> TempBuffer;                // Temporary write buffer
@@ -2464,7 +2463,7 @@ struct ImGuiContext
     float                   FontSize;                           // Currently bound font size == line height (== FontSizeBase + externals scales applied in the UpdateCurrentFontSize() function).
     float                   FontSizeBase;                       // Font size before scaling == style.FontSizeBase == value passed to PushFont() when specified.
     float                   FontBakedScale;                     // == FontBaked->Size / FontSize. Scale factor over baked size. Rarely used nowadays, very often == 1.0f.
-    float                   FontRasterizerDensity;              // Current font density. Used by all calls to GetFontBaked().
+    float                   CurrentPixelDensity;                // Current font density. Used by all calls to GetFontBaked().
     float                   CurrentDpiScale;                    // Current window/viewport DpiScale == CurrentViewport->DpiScale
     ImDrawListSharedData    DrawListSharedData;
     ImGuiID                 WithinEndChildID;                   // Set within EndChild()
@@ -3624,8 +3623,8 @@ namespace ImGui
     IMGUI_API void          UnregisterFontAtlas(ImFontAtlas* atlas);
     IMGUI_API void          SetCurrentFont(ImFont* font, float font_size_before_scaling, float font_size_after_scaling);
     IMGUI_API void          UpdateCurrentFontSize(float restore_font_size_after_scaling);
-    IMGUI_API void          SetFontRasterizerDensity(float rasterizer_density);
-    inline float            GetFontRasterizerDensity() { return GImGui->FontRasterizerDensity; }
+    IMGUI_API void          SetPixelDensity(float pixel_density); // was SetFontRasterizerDensity()
+    inline float            GetPixelDensity() { return GImGui->CurrentPixelDensity; }
     inline float            GetRoundedFontSize(float size) { return IM_ROUND(size); }
     IMGUI_API ImFont*       GetDefaultFont();
     IMGUI_API void          PushPasswordFont();

imgui_tables.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.92.9b
+// dear imgui, v1.93.0 WIP
 // (tables and columns code)
 
 /*

imgui_widgets.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.92.9b
+// dear imgui, v1.93.0 WIP
 // (widgets code)
 
 /*