0db33b10f7
- Fix immediate mode (glBegin/glEnd) by using color-per-vertex pattern - Document Emscripten's requirement for color per vertex in GL_README.md - Add OpenGL test tab with visual rendering verification - Test GL_TRIANGLES, GL_QUADS, GL_LINES, GL_LINE_STRIP, GL_LINE_LOOP - Update wxwidgets submodule with improved context management Key finding: Emscripten's LEGACY_GL_EMULATION requires glColor*() to be called before EACH glVertex*() call, not using OpenGL's "current color" semantic. This is because the stride calculation expects interleaved vertex data with color per vertex. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
41 lines
1.3 KiB
Text
41 lines
1.3 KiB
Text
# Makefile for wxWidgets WASM test app with OpenGL support
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# Uses the local wxWidgets build with legacy GL emulation
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WXCONFIG = ../../build-wasm/wxwidgets-universal/wx-config
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TOOLS_ROOT = ../../wxwidgets/build/wasm
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CXX = em++
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WX_CXXFLAGS := $(shell $(WXCONFIG) --cxxflags)
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# Include GL library for OpenGL tests
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WX_LDFLAGS := $(shell $(WXCONFIG) --libs base,core,gl)
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TARGET = minimal_test
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SOURCES = minimal_test.cpp
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CXXFLAGS = -O2 $(WX_CXXFLAGS)
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# Emscripten flags:
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# -sLEGACY_GL_EMULATION: Enable legacy OpenGL (glBegin/glEnd, etc.) emulation on WebGL
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# -sMAX_WEBGL_VERSION=2: Enable WebGL 2.0 support (required since wxGLCanvas requests WebGL 2)
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# Note: Cannot combine LEGACY_GL_EMULATION with FULL_ES2 - they are mutually exclusive
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EM_GL_FLAGS = -sLEGACY_GL_EMULATION -sMAX_WEBGL_VERSION=2
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LDFLAGS = -sALLOW_MEMORY_GROWTH -sERROR_ON_UNDEFINED_SYMBOLS=0 \
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-s "EXPORTED_RUNTIME_METHODS=['HEAPU8','HEAP8','HEAP32']" \
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$(EM_GL_FLAGS) $(WX_LDFLAGS)
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JS = $(TOOLS_ROOT)/wx.js
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HTML = $(TOOLS_ROOT)/template.html
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all: $(TARGET).html
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$(TARGET).o: $(SOURCES)
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$(CXX) -c $(CXXFLAGS) $< -o $@
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$(TARGET).html: $(TARGET).o
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$(CXX) $(TARGET).o $(LDFLAGS) --pre-js $(JS) --shell-file $(HTML) -o $@
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clean:
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rm -f $(TARGET).o $(TARGET).html $(TARGET).js $(TARGET).wasm
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.PHONY: all clean
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