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render: Don't default to vsync=0 on Emscripten.

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Fixes #12805.
This commit is contained in:
Ryan C. Gordon
2025-09-16 12:30:22 -04:00
parent 9dbf2c7c0f
commit 3ee29f2e7a
1 changed files with 9 additions and 1 deletions
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10
src/render/SDL_render.c
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@@ -1147,8 +1147,16 @@ SDL_Renderer *SDL_CreateRendererWithProperties(SDL_PropertiesID props)
SDL_AddWindowEventWatch(SDL_WINDOW_EVENT_WATCH_NORMAL, SDL_RendererEventWatch, renderer); SDL_AddWindowEventWatch(SDL_WINDOW_EVENT_WATCH_NORMAL, SDL_RendererEventWatch, renderer);
} }
int vsync = (int)SDL_GetNumberProperty(props, SDL_PROP_RENDERER_CREATE_PRESENT_VSYNC_NUMBER, 0); #ifdef SDL_PLATFORM_EMSCRIPTEN // don't change vsync on Emscripten unless explicitly requested; we already set this with a mainloop, and a 0 default causes problems here.
if (SDL_HasProperty(props, SDL_PROP_RENDERER_CREATE_PRESENT_VSYNC_NUMBER)) {
const int vsync = (int)SDL_GetNumberProperty(props, SDL_PROP_RENDERER_CREATE_PRESENT_VSYNC_NUMBER, 0);
SDL_SetRenderVSync(renderer, vsync);
}
#else // everything else defaults to no vsync if not requested.
const int vsync = (int)SDL_GetNumberProperty(props, SDL_PROP_RENDERER_CREATE_PRESENT_VSYNC_NUMBER, 0);
SDL_SetRenderVSync(renderer, vsync); SDL_SetRenderVSync(renderer, vsync);
#endif
SDL_CalculateSimulatedVSyncInterval(renderer, window); SDL_CalculateSimulatedVSyncInterval(renderer, window);
SDL_LogInfo(SDL_LOG_CATEGORY_RENDER, SDL_LogInfo(SDL_LOG_CATEGORY_RENDER,