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Frame limiter, force the game to draw even when inactive

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This commit is contained in:
Toni Spets 2010-10-25 18:51:39 +03:00
parent 7595f6d7e5
commit c196186614
3 changed files with 37 additions and 16 deletions
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17
surface.c
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@ -544,13 +544,15 @@ DWORD WINAPI dd_Thread(IDirectDrawSurfaceImpl *This)
IDirectDrawSurface_SetClipper(primary, clipper);
This->flipEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
WaitForSingleObject(This->flipEvent, INFINITE);
DWORD tick_start;
DWORD tick_end;
DWORD frame_len = 1000.0f / This->parent->freq;
while(This->dRun)
{
WaitForSingleObject(This->flipEvent, INFINITE);
if(!This->dRun)
break;
tick_start = GetTickCount();
if(IDirectDrawSurface_Lock(primary, NULL, &ddsd, DDLOCK_WRITEONLY|DDLOCK_WAIT, NULL) != DD_OK)
continue;
@ -566,7 +568,12 @@ DWORD WINAPI dd_Thread(IDirectDrawSurfaceImpl *This)
IDirectDrawSurface_Unlock(primary, NULL);
ResetEvent(This->flipEvent);
tick_end = GetTickCount();
if(tick_end - tick_start < frame_len)
{
Sleep( frame_len - (tick_end - tick_start) );
}
}
IDirectDrawClipper_Release(clipper);