mirror of https://github.com/libsdl-org/SDL
Fixed SDL_RenderSetVSync does not update flags if simulated vsync is on
This lets the user to correctly detect current vsync state by reading SDL_RendererInfo.
Also fixes SetVSync's return value check (it may be positive for error too).
(cherry picked from commit d78072fcd4
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08d5c1386e
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@ -4306,8 +4306,13 @@ int SDL_SetRenderVSync(SDL_Renderer *renderer, int vsync)
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}
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}
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if (!renderer->SetVSync ||
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if (!renderer->SetVSync ||
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renderer->SetVSync(renderer, vsync) < 0) {
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renderer->SetVSync(renderer, vsync) != 0) {
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renderer->simulate_vsync = vsync ? SDL_TRUE : SDL_FALSE;
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renderer->simulate_vsync = vsync ? SDL_TRUE : SDL_FALSE;
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if (renderer->simulate_vsync) {
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renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
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} else {
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renderer->info.flags &= ~SDL_RENDERER_PRESENTVSYNC;
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}
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} else {
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} else {
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renderer->simulate_vsync = SDL_FALSE;
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renderer->simulate_vsync = SDL_FALSE;
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}
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}
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