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Sought to draw in a standard serial arrangement as and when bandwidth allows it.

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This commit is contained in:
Thomas Harte 2016-05-09 07:17:12 -04:00
parent cec9ad0dc6
commit ddfc9910e5
1 changed files with 2 additions and 1 deletions
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3
OSBindings/Mac/Clock Signal/Views/CSOpenGLView.m
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@ -60,6 +60,7 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
BOOL didSkip = _hasSkipped;
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
[self.delegate openGLView:self didUpdateToTime:time didSkipPreviousUpdate:didSkip frequency:frequency];
[self drawViewOnlyIfDirty:YES];
OSAtomicTestAndClear(processingMask, &_updateIsOngoing);
});
_hasSkipped = NO;
@ -68,7 +69,7 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
// Draw the display only if a previous draw is not still ongoing. -drawViewOnlyIfDirty: is guaranteed
// to be safe to call concurrently with -openGLView:updateToTime: so there's no need to worry about
// the above interrupting the below or vice versa.
if(!OSAtomicTestAndSet(drawingMask, &_updateIsOngoing))
if(!OSAtomicTestAndSet(drawingMask, &_updateIsOngoing) && _hasSkipped)
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
[self drawViewOnlyIfDirty:YES];