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Increase delay granularity for more stable framerate

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Sally Coolatta 2022-03-27 13:58:11 -04:00
parent d8bef70171
commit ebd4197f5c
1 changed files with 8 additions and 3 deletions
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11
src/sdl/i_system.c
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@ -1731,9 +1731,14 @@ boolean I_CheckFrameCap(precise_t start, precise_t end)
// If the wait's greater than our granularity value, // If the wait's greater than our granularity value,
// we'll just burn the couple extra cycles in the main loop // we'll just burn the couple extra cycles in the main loop
// in order to get to the next frame. This makes us reach just // in order to get to the next frame.
// that much closer to exactly the FPS cap! // This makes us get to the exact FPS cap more often.
#define DELAY_GRANULARITY 10 // 10ms is the average clock tick of most OS scheduling. (https://www.libsdl.org/release/SDL-1.2.15/docs/html/sdldelay.html)
// Higher values have more wasted CPU cycles, but the in-game frame performance is better.
// 10ms is the average clock tick of most OS scheduling.
// 15ms is a little more than that, for leniency on slow machines. (This helps mine reach a stable 60, at least!)
// (https://www.libsdl.org/release/SDL-1.2.15/docs/html/sdldelay.html)
#define DELAY_GRANULARITY 15
if (wait >= DELAY_GRANULARITY) if (wait >= DELAY_GRANULARITY)
{ {
SDL_Delay(wait); SDL_Delay(wait);