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The refresh rate in SDL_DisplayMode is now a float

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This commit is contained in:
Sam Lantinga 2023-01-02 15:47:19 -08:00
parent 851b0e16be
commit e3c1749f5b
32 changed files with 107 additions and 83 deletions
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15
src/render/SDL_render.c
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@ -915,22 +915,23 @@ static SDL_RenderLineMethod SDL_GetRenderLineMethod()
static void SDL_CalculateSimulatedVSyncInterval(SDL_Renderer *renderer, SDL_Window *window)
{
/* FIXME: SDL refresh rate API should return numerator/denominator */
int refresh_rate = 0;
int display_index = SDL_GetWindowDisplayIndex(window);
SDL_DisplayMode mode;
float refresh_rate;
int num, den;
if (display_index < 0) {
display_index = 0;
}
if (SDL_GetDesktopDisplayMode(display_index, &mode) == 0) {
if (SDL_GetDesktopDisplayMode(display_index, &mode) == 0 && mode.refresh_rate > 0.0f) {
refresh_rate = mode.refresh_rate;
}
if (!refresh_rate) {
} else {
/* Pick a good default refresh rate */
refresh_rate = 60;
refresh_rate = 60.0f;
}
renderer->simulate_vsync_interval_ns = (SDL_NS_PER_SECOND / refresh_rate);
num = 100;
den = (int)(100 * refresh_rate);
renderer->simulate_vsync_interval_ns = (SDL_NS_PER_SECOND * num) / den;
}
#endif /* !SDL_RENDER_DISABLED */