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Prevents an endless queue of backlogged updates.

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This commit is contained in:
Thomas Harte 2020-02-03 22:08:07 -05:00
parent cf9729c74f
commit 96769c52f6
1 changed files with 14 additions and 7 deletions
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21
OSBindings/Mac/Clock Signal/Machine/CSMachine.mm
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@ -25,6 +25,7 @@
#import "NSBundle+DataResource.h"
#import "NSData+StdVector.h"
#include <atomic>
#include <bitset>
#import <OpenGL/OpenGL.h>
@ -152,6 +153,7 @@ struct ActivityObserver: public Activity::Observer {
CSHighPrecisionTimer *_timer;
CGSize _pixelSize;
std::atomic_flag is_updating;
std::unique_ptr<Outputs::Display::OpenGL::ScanTarget> _scanTarget;
}
@ -205,6 +207,7 @@ struct ActivityObserver: public Activity::Observer {
_speakerDelegate.machineAccessLock = _delegateMachineAccessLock;
_joystickMachine = _machine->joystick_machine();
is_updating.clear();
}
return self;
}
@ -705,11 +708,12 @@ struct ActivityObserver: public Activity::Observer {
}
- (void)openGLViewDisplayLinkDidFire:(CSOpenGLView *)view {
CGSize pixelSize = view.backingSize;
@synchronized(self) {
_pixelSize = view.backingSize;
_pixelSize = pixelSize;
}
[self.view performWithGLContext:^{
self->_scanTarget->draw((int)self->_pixelSize.width, (int)self->_pixelSize.height);
self->_scanTarget->draw((int)pixelSize.width, (int)pixelSize.height);
} flushDrawable:YES];
}
@ -721,11 +725,14 @@ struct ActivityObserver: public Activity::Observer {
pixelSize = self->_pixelSize;
}
dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INTERACTIVE, 0), ^{
[self.view performWithGLContext:^{
self->_scanTarget->update((int)pixelSize.width, (int)pixelSize.height);
} flushDrawable:NO];
});
if(!self->is_updating.test_and_set()) {
dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INTERACTIVE, 0), ^{
[self.view performWithGLContext:^{
self->_scanTarget->update((int)pixelSize.width, (int)pixelSize.height);
} flushDrawable:NO];
self->is_updating.clear();
});
}
} interval:2500000];
}