CALayer-shadow-performance-issue.md

CALayer shadow performance issue

Using shadowPath property can greatly improve performance. http://stackoverflow.com/questions/7746921/iphone-animations-performance-is-very-poor-when-views-shadow-is-on

theView.layer.shadowPath = [UIBezierPath bezierPathWithRect:theView.bounds].CGPath;

Or

theView.layer.shadowPath = [UIBezierPath bezierPathWithRoundedRect:theView.bounds cornerRadius:theView.layer.cornerRadius].CGPath;