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Added the simplest mechanism to decouple emulation from the display link queue.

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This commit is contained in:
Thomas Harte 2016-03-19 22:53:37 -04:00
parent 9da7716c72
commit a546277f88
1 changed files with 10 additions and 3 deletions
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13
OSBindings/Mac/Clock Signal/Views/CSOpenGLView.m
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@ -12,6 +12,7 @@
@implementation CSOpenGLView {
CVDisplayLinkRef _displayLink;
uint32_t _updateIsOngoing;
}
- (void)prepareOpenGL
@ -51,9 +52,15 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
- (void)drawAtTime:(const CVTimeStamp *)now
{
NSLog(@"%0.4f", (double)now->videoTime / (double)now->videoTimeScale);
[self.delegate openGLView:self didUpdateToTime:*now];
[self drawViewOnlyIfDirty:YES];
const uint32_t activityMask = 0x01;
if(!OSAtomicTestAndSet(activityMask, &_updateIsOngoing))
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
[self.delegate openGLView:self didUpdateToTime:*now];
[self drawViewOnlyIfDirty:YES];
OSAtomicTestAndClear(activityMask, &_updateIsOngoing);
});
}
}
- (void)invalidate