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Refactor SDL surface backend for improved quad rendering and performance

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- Introduced a new structure ImGui_ImplSDLSurface3_Quad to represent quads.
- Added functions to detect quads and check for constant colors and linear UVs.
- Enhanced rendering functions to utilize quad detection for faster rendering paths.
- Updated the rendering logic in ImGui_ImplSDLSurface3_RenderDrawData to leverage the new quad rendering capabilities.
- Optimized Makefiles and build scripts to include optimization flags for better performance.
This commit is contained in:
moonpower
2026-03-13 14:19:04 +01:00
parent 2f2b8a1226
commit 5ae4be2b5f
7 changed files with 926 additions and 86 deletions
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examples/example_sdl2_surface/Makefile
+2 -1
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@@ -17,7 +17,8 @@ OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
UNAME_S := $(shell uname -s)
CXXFLAGS = -std=c++11 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
CXXFLAGS += -g -Wall -Wformat
OPTFLAGS ?= -O2
CXXFLAGS += -g $(OPTFLAGS) -Wall -Wformat
LIBS =
##---------------------------------------------------------------------
examples/example_sdl2_surface/build_win32.bat
+1 -1
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@@ -5,4 +5,4 @@
@set SOURCES=main.cpp ..\..\backends\imgui_impl_sdl2.cpp ..\..\backends\imgui_impl_sdlsurface2.cpp ..\..\imgui*.cpp
@set LIBS=/LIBPATH:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib
mkdir %OUT_DIR%
cl /nologo /Zi /MD /utf-8 %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console
cl /nologo /Zi /O2 /MD /utf-8 %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console
examples/example_sdl3_surface/Makefile
+2 -1
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@@ -7,7 +7,8 @@ OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
UNAME_S := $(shell uname -s)
CXXFLAGS = -std=c++11 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
CXXFLAGS += -g -Wall -Wformat
OPTFLAGS ?= -O2
CXXFLAGS += -g $(OPTFLAGS) -Wall -Wformat
LIBS =
ifeq ($(UNAME_S), Linux)
examples/example_sdl3_surface/build_win32.bat
+1 -1
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@@ -4,4 +4,4 @@
@set SOURCES=main.cpp ..\..\backends\imgui_impl_sdl3.cpp ..\..\backends\imgui_impl_sdlsurface3.cpp ..\..\imgui*.cpp
@set LIBS=/LIBPATH:%SDL3_DIR%\lib\x86 SDL3.lib
mkdir %OUT_DIR%
cl /nologo /Zi /MD /utf-8 %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console
cl /nologo /Zi /O2 /MD /utf-8 %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console