Redraws the view’s contents immediately.
- iOS 5.0–12.0Deprecated
- tvOS 9.0–12.0Deprecated
This method causes your drawing method to be called immediately and then presents the rendered image to the screen. Your application typically calls this method inside of a rendering loop, such as the one provided by the
GLKView class, in order to provide a continuous smooth animation.
Never call this method inside your drawing function.