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use waitable timer also for fps limiter

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This commit is contained in:
FunkyFr3sh 2018-11-29 21:26:43 +01:00
parent 435854456b
commit 97ca023f09
6 changed files with 111 additions and 44 deletions
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17
src/render_soft.c
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@ -40,25 +40,30 @@ DWORD WINAPI render_soft_main(void)
else
Sleep(500);
int maxFPS = ddraw->render.maxfps;
DWORD frameLength = 0;
DWORD lastTick = 0;
int maxFPS = ddraw->render.maxfps;
ddraw->fpsLimiter.tickLengthNs = 0;
ddraw->fpsLimiter.ticklength = 0;
if (maxFPS < 0)
maxFPS = ddraw->mode.dmDisplayFrequency;
if (maxFPS >= 1000)
if (maxFPS > 1000)
maxFPS = 0;
if (maxFPS > 0)
frameLength = 1000.0f / maxFPS;
{
float len = 1000.0f / maxFPS;
ddraw->fpsLimiter.tickLengthNs = len * 10000;
ddraw->fpsLimiter.ticklength = len + 0.5f;
}
while (ddraw->render.run && WaitForSingleObject(ddraw->render.sem, INFINITE) != WAIT_FAILED)
{
if (maxFPS > 0)
if (ddraw->fpsLimiter.ticklength > 0)
{
DWORD curTick = timeGetTime();
if (lastTick + frameLength > curTick)
if (lastTick + ddraw->fpsLimiter.ticklength > curTick)
{
ReleaseSemaphore(ddraw->render.sem, 1, NULL);
SetEvent(ddraw->render.ev);