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c5cc022aa2
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Add SDL2+OpenGL ES 2 renderer backend for Emscripten/WebGL
Implements Phase 1 of renderer abstraction plan:
- SDL2Types.h: SFML-compatible type stubs in sf:: namespace
- SDL2Renderer.h/cpp: OpenGL ES 2 rendering implementation
- EmscriptenStubs.cpp: Stubs for missing POSIX functions (wait3, wait4, wcsftime)
Build system changes:
- Add MCRF_SDL2 compile-time backend selection
- Add Emscripten SDL2 link options (-sUSE_SDL=2, -sFULL_ES2=1)
- Fix LONG_BIT mismatch for Emscripten in pyport.h
Code changes for SDL2/headless compatibility:
- Guard ImGui includes with !MCRF_HEADLESS && !MCRF_SDL2
- Defer GL shader initialization until after context creation
Current status: Python runs in browser, rendering WIP (canvas sizing issues)
Build commands:
emcmake cmake -DMCRF_SDL2=ON -B build-emscripten
emmake make -C build-emscripten
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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2026-01-31 11:13:15 -05:00 |
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