Is UIGraphicsBeginImageContext thread safe?

Question

So I\'ve been under the impression that UIGraphicsBeginImageContext is thread safe, and can be called from any thread to create a new CGContextRef that can be used to draw.

Answer 1

To quote from the documentation:

In iOS 4 and later, you may call this function from any thread of your app.

link:http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIKitFunctionReference/Reference/reference.html

Answer 2

UIGraphicsBeginImageContext definitely is thread safe in iOS 4 and later. WWDC 2012 session videos relate to iOS 6, so maybe you should relate to iOS 6 documentation as well :)