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Made an attempt not to interrupt the display link queue too much when emulation is running slowly.

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This commit is contained in:
Thomas Harte 2016-04-04 20:22:33 -04:00
parent 729fddea1c
commit 4595741ab0
1 changed files with 10 additions and 1 deletions
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11
OSBindings/Mac/Clock Signal/Views/CSOpenGLView.m
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@ -13,6 +13,7 @@
@implementation CSOpenGLView {
CVDisplayLinkRef _displayLink;
uint32_t _updateIsOngoing;
int _missedFrames;
}
- (void)prepareOpenGL
@ -55,6 +56,7 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
const uint32_t activityMask = 0x01;
if(!OSAtomicTestAndSet(activityMask, &_updateIsOngoing))
{
_missedFrames = 0;
CVTimeStamp time = *now;
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
[self.delegate openGLView:self didUpdateToTime:time];
@ -64,7 +66,14 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
}
else
{
[self drawViewOnlyIfDirty:YES];
_missedFrames++;
if(_missedFrames == 10)
{
_missedFrames = 0;
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{
[self drawViewOnlyIfDirty:YES];
});
}
}
}