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sdl: set vsync swap interval to 2 for 120 Hz displays 

Issue #293
This commit is contained in:
Flyinghead 2021-08-23 10:10:13 +02:00
parent a0664a49d2
commit 98d04702ae
2 changed files with 17 additions and 2 deletions
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18
core/wsi/sdl.cpp
View File

@ -85,7 +85,21 @@ bool SDLGLGraphicsContext::Init()
// Swap immediately
swapOnVSync = false;
#endif
SDL_GL_SetSwapInterval((int)swapOnVSync);
swapInterval = 1;
int displayIndex = SDL_GetWindowDisplayIndex(window);
if (displayIndex < 0)
WARN_LOG(RENDERER, "Cannot get the window display index: %s", SDL_GetError());
else
{
SDL_DisplayMode mode{};
if (SDL_GetDesktopDisplayMode(displayIndex, &mode) == 0) {
INFO_LOG(RENDERER, "Monitor refresh rate: %d Hz", mode.refresh_rate);
if (mode.refresh_rate > 100)
swapInterval = 2;
}
}
SDL_GL_SetSwapInterval(swapOnVSync ? swapInterval : 0);
#ifdef GLES
load_gles_symbols();
@ -109,7 +123,7 @@ void SDLGLGraphicsContext::Swap()
if (swapOnVSync == (settings.input.fastForwardMode || !config::VSync))
{
swapOnVSync = (!settings.input.fastForwardMode && config::VSync);
SDL_GL_SetSwapInterval((int)swapOnVSync);
SDL_GL_SetSwapInterval(swapOnVSync ? swapInterval : 0);
}
#endif
SDL_GL_SwapWindow(window);

1
core/wsi/sdl.h
View File

@ -46,6 +46,7 @@ private:
SDL_Window* window = nullptr;
SDL_GLContext glcontext = nullptr;
bool swapOnVSync = false;
int swapInterval = 1;
};
extern SDLGLGraphicsContext theGLContext;