isAsynchronous
Determines when the contents of the layer are updated.
Declaration
var isAsynchronous: Bool { get set }Discussion
If false, the contents of the layer are updated only in response to receiving a setNeedsDisplay() message. When true, the receiver’s canDraw(inCGLContext:pixelFormat:forLayerTime:displayTime:) is called periodically to determine if the OpenGL content should be updated.
See Also
Related Documentation
- Core Animation Programming Guide