build: Update ImGui

Author: WerWolv

lib/libimhex/source/ui/imgui_imhex_extensions.cpp

@@ -1049,9 +1049,9 @@ namespace ImGuiExt {
 
         if (no_progress) {
             auto time = (fmod(ImGui::GetTime() * 2, 1.8) - 0.4);
-            RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), ImSaturate(time), ImSaturate(time + 0.2), style.FrameRounding);
+            RenderRectFilledInRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), ImSaturate(time), ImSaturate(time + 0.2), style.FrameRounding);
         } else {
-            RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0F, fraction, style.FrameRounding);
+            RenderRectFilledInRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0F, fraction, style.FrameRounding);
         }
     }
 

lib/third_party/imgui/backend/include/imgui_impl_opengl3.h

@@ -41,7 +41,7 @@ IMGUI_IMPL_API void     ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data);
 IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_CreateDeviceObjects();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyDeviceObjects();
 
-// (Advanced) Use e.g. if you need to precisely control the timing of texture updates (e.g. for staged rendering), by setting ImDrawData::Textures = NULL to handle this manually.
+// (Advanced) Use e.g. if you need to precisely control the timing of texture updates (e.g. for staged rendering), by setting ImDrawData::Textures = nullptr to handle this manually.
 IMGUI_IMPL_API void     ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex);
 
 // Configuration flags to add in your imconfig file:

lib/third_party/imgui/backend/source/imgui_impl_opengl3.cpp

@@ -24,7 +24,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
-//  2025-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
+//  2026-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
+//  2025-12-11: OpenGL: Fixed embedded loader multiple init/shutdown cycles broken on some platforms. (#8792, #9112)
+//  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
 //  2025-07-22: OpenGL: Add and call embedded loader shutdown during ImGui_ImplOpenGL3_Shutdown() to facilitate multiple init/shutdown cycles in same process. (#8792)
 //  2025-07-15: OpenGL: Set GL_UNPACK_ALIGNMENT to 1 before updating textures (#8802) + restore non-WebGL/ES update path that doesn't require a CPU-side copy.
 //  2025-06-11: OpenGL: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplOpenGL3_CreateFontsTexture() and ImGui_ImplOpenGL3_DestroyFontsTexture().
@@ -41,7 +43,7 @@
 //  2023-05-09: OpenGL: Support for glBindSampler() backup/restore on ES3. (#6375)
 //  2023-04-18: OpenGL: Restore front and back polygon mode separately when supported by context. (#6333)
 //  2023-03-23: OpenGL: Properly restoring "no shader program bound" if it was the case prior to running the rendering function. (#6267, #6220, #6224)
-//  2023-03-15: OpenGL: Fixed GL loader crash when GL_VERSION returns NULL. (#6154, #4445, #3530)
+//  2023-03-15: OpenGL: Fixed GL loader crash when GL_VERSION returns nullptr. (#6154, #4445, #3530)
 //  2023-03-06: OpenGL: Fixed restoration of a potentially deleted OpenGL program, by calling glIsProgram(). (#6220, #6224)
 //  2022-11-09: OpenGL: Reverted use of glBufferSubData(), too many corruptions issues + old issues seemingly can't be reproed with Intel drivers nowadays (revert 2021-12-15 and 2022-05-23 changes).
 //  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
@@ -305,7 +307,8 @@ struct ImGui_ImplOpenGL3_VtxAttribState
 bool ImGui_ImplOpenGL3_InitLoader();
 bool ImGui_ImplOpenGL3_InitLoader()
 {
-    // Initialize our loader
+    // Lazily initialize our loader if not already done
+    // (to facilitate handling multiple DLL boundaries and multiple context shutdowns we call this from all main entry points)
 #ifdef IMGUI_IMPL_OPENGL_LOADER_IMGL3W
     if (glGetIntegerv == nullptr && imgl3wInit() != 0)
     {
@@ -316,6 +319,13 @@ bool ImGui_ImplOpenGL3_InitLoader()
     return true;
 }
 
+static void ImGui_ImplOpenGL3_ShutdownLoader()
+{
+#ifdef IMGUI_IMPL_OPENGL_LOADER_IMGL3W
+    imgl3wShutdown();
+#endif
+}
+
 // Functions
 bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
 {
@@ -402,7 +412,7 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
         glsl_version = "#version 130";
 #endif
     }
-    IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(bd->GlslVersionString));
+    IM_ASSERT((int)strlen(glsl_version) + 2 < IM_COUNTOF(bd->GlslVersionString));
     strcpy(bd->GlslVersionString, glsl_version);
     strcat(bd->GlslVersionString, "\n");
 
@@ -440,26 +450,26 @@ void    ImGui_ImplOpenGL3_Shutdown()
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
     IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
     ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
 
     ImGui_ImplOpenGL3_ShutdownMultiViewportSupport();
     ImGui_ImplOpenGL3_DestroyDeviceObjects();
+
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
     io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures | ImGuiBackendFlags_RendererHasViewports);
+    platform_io.ClearRendererHandlers();
     IM_DELETE(bd);
 
-#ifdef IMGUI_IMPL_OPENGL_LOADER_IMGL3W
-    imgl3wShutdown();
-#endif
+    ImGui_ImplOpenGL3_ShutdownLoader();
 }
 
 void    ImGui_ImplOpenGL3_NewFrame()
 {
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
     IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplOpenGL3_Init()?");
 
-    ImGui_ImplOpenGL3_InitLoader(); // Lazily init loader if not already done for e.g. DLL boundaries.
-
+    ImGui_ImplOpenGL3_InitLoader();
     if (!bd->ShaderHandle)
         if (!ImGui_ImplOpenGL3_CreateDeviceObjects())
             IM_ASSERT(0 && "ImGui_ImplOpenGL3_CreateDeviceObjects() failed!");
@@ -487,7 +497,7 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_wid
     if (useFontShaders) {
         glBlendFuncSeparate(GL_SRC1_COLOR, GL_ONE_MINUS_SRC1_COLOR,GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
     } else {
-        glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+    glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
     }
 #else
     // IMHEX PATCH END
@@ -575,7 +585,7 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
     if (fb_width <= 0 || fb_height <= 0)
         return;
 
-    ImGui_ImplOpenGL3_InitLoader(); // Lazily init loader if not already done for e.g. DLL boundaries.
+    ImGui_ImplOpenGL3_InitLoader();
 
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
 
@@ -779,7 +789,7 @@ void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex)
     {
         // Create and upload new texture to graphics system
         //IMGUI_DEBUG_LOG("UpdateTexture #%03d: WantCreate %dx%d\n", tex->UniqueID, tex->Width, tex->Height);
-        IM_ASSERT(tex->TexID == 0 && tex->BackendUserData == nullptr);
+        IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
         IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
         const void* pixels = tex->GetPixels();
         GLuint gl_texture_id = 0;
@@ -878,6 +888,7 @@ static bool CheckProgram(GLuint handle, const char* desc)
 
 bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
 {
+    ImGui_ImplOpenGL3_InitLoader();
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
 
     // Backup GL state
@@ -1000,7 +1011,7 @@ bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
         "{\n"
         // IMHEX PATCH BEGIN
         "    if (!GammaCorrected)\n"
-        "       Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
+        "    Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
         "    else {\n"
         "       Out_Color = Frag_Color;\n"
         "       SRC1_Color = vec4(texture(Texture, Frag_UV.st).rgb * Frag_Color.aaa,1.0);\n"
@@ -1090,6 +1101,7 @@ bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
 
 void    ImGui_ImplOpenGL3_DestroyDeviceObjects()
 {
+    ImGui_ImplOpenGL3_InitLoader();
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
     if (bd->VboHandle)      { glDeleteBuffers(1, &bd->VboHandle); bd->VboHandle = 0; }
     if (bd->ElementsHandle) { glDeleteBuffers(1, &bd->ElementsHandle); bd->ElementsHandle = 0; }

lib/third_party/imgui/cimgui/include/cimgui.h

@@ -4729,7 +4729,6 @@ CIMGUI_API void ImRect_TranslateX(ImRect* self,float dx);
 CIMGUI_API void ImRect_TranslateY(ImRect* self,float dy);
 CIMGUI_API void ImRect_ClipWith(ImRect* self,const ImRect r);
 CIMGUI_API void ImRect_ClipWithFull(ImRect* self,const ImRect r);
-CIMGUI_API void ImRect_Floor(ImRect* self);
 CIMGUI_API bool ImRect_IsInverted(ImRect* self);
 CIMGUI_API void ImRect_ToVec4(ImVec4 *pOut,ImRect* self);
 CIMGUI_API size_t igImBitArrayGetStorageSizeInBytes(int bitcount);
@@ -5261,7 +5260,6 @@ CIMGUI_API void igRenderBullet(ImDrawList* draw_list,ImVec2 pos,ImU32 col);
 CIMGUI_API void igRenderCheckMark(ImDrawList* draw_list,ImVec2 pos,ImU32 col,float sz);
 CIMGUI_API void igRenderArrowPointingAt(ImDrawList* draw_list,ImVec2 pos,ImVec2 half_sz,ImGuiDir direction,ImU32 col);
 CIMGUI_API void igRenderArrowDockMenu(ImDrawList* draw_list,ImVec2 p_min,float sz,ImU32 col);
-CIMGUI_API void igRenderRectFilledRangeH(ImDrawList* draw_list,const ImRect rect,ImU32 col,float x_start_norm,float x_end_norm,float rounding);
 CIMGUI_API void igRenderRectFilledWithHole(ImDrawList* draw_list,const ImRect outer,const ImRect inner,ImU32 col,float rounding);
 CIMGUI_API ImDrawFlags igCalcRoundingFlagsForRectInRect(const ImRect r_in,const ImRect r_outer,float threshold);
 CIMGUI_API void igTextEx(const char* text,const char* text_end,ImGuiTextFlags flags);
@@ -5347,7 +5345,6 @@ CIMGUI_API void igDebugNodeDockNode(ImGuiDockNode* node,const char* label);
 CIMGUI_API void igDebugNodeDrawList(ImGuiWindow* window,ImGuiViewportP* viewport,const ImDrawList* draw_list,const char* label);
 CIMGUI_API void igDebugNodeDrawCmdShowMeshAndBoundingBox(ImDrawList* out_draw_list,const ImDrawList* draw_list,const ImDrawCmd* draw_cmd,bool show_mesh,bool show_aabb);
 CIMGUI_API void igDebugNodeFont(ImFont* font);
-CIMGUI_API void igDebugNodeFontGlyphesForSrcMask(ImFont* font,ImFontBaked* baked,int src_mask);
 CIMGUI_API void igDebugNodeFontGlyph(ImFont* font,const ImFontGlyph* glyph);
 CIMGUI_API void igDebugNodeTexture(ImTextureData* tex,int int_id,const ImFontAtlasRect* highlight_rect);
 CIMGUI_API void igDebugNodeStorage(ImGuiStorage* storage,const char* label);

lib/third_party/imgui/cimgui/source/cimgui.cpp

@@ -3469,10 +3469,6 @@ CIMGUI_API void ImRect_ClipWithFull(ImRect* self,const ImRect r)
 {
     return self->ClipWithFull(r);
 }
-CIMGUI_API void ImRect_Floor(ImRect* self)
-{
-    return self->Floor();
-}
 CIMGUI_API bool ImRect_IsInverted(ImRect* self)
 {
     return self->IsInverted();
@@ -5597,10 +5593,6 @@ CIMGUI_API void igRenderArrowDockMenu(ImDrawList* draw_list,ImVec2 p_min,float s
 {
     return ImGui::RenderArrowDockMenu(draw_list,p_min,sz,col);
 }
-CIMGUI_API void igRenderRectFilledRangeH(ImDrawList* draw_list,const ImRect rect,ImU32 col,float x_start_norm,float x_end_norm,float rounding)
-{
-    return ImGui::RenderRectFilledRangeH(draw_list,rect,col,x_start_norm,x_end_norm,rounding);
-}
 CIMGUI_API void igRenderRectFilledWithHole(ImDrawList* draw_list,const ImRect outer,const ImRect inner,ImU32 col,float rounding)
 {
     return ImGui::RenderRectFilledWithHole(draw_list,outer,inner,col,rounding);
@@ -5938,10 +5930,6 @@ CIMGUI_API void igDebugNodeFont(ImFont* font)
 {
     return ImGui::DebugNodeFont(font);
 }
-CIMGUI_API void igDebugNodeFontGlyphesForSrcMask(ImFont* font,ImFontBaked* baked,int src_mask)
-{
-    return ImGui::DebugNodeFontGlyphesForSrcMask(font,baked,src_mask);
-}
 CIMGUI_API void igDebugNodeFontGlyph(ImFont* font,const ImFontGlyph* glyph)
 {
     return ImGui::DebugNodeFontGlyph(font,glyph);