GLKViewController - DrawinRect and Update stop firing when leaving view?

Question

I've a GLKViewController which renders an OpenGL 2.0 scene. All works fine, but when I segue to a new storyboard scene (via a UINav Controller) and then return to the OpenGL ES 2.0 scene, the update and drawRect methods in the view controller are no longer called.

I've tried setting self.paused to NO in the viewDidLoad method, but to no avail.

Can anyone suggest what is happening here ?

The GLKViewController contains a UIView, both of which are set in the storyboard. This is the segue to the view from the GLKViewController :

if ([segue.identifier isEqualToString:@"GoToEntry"]) {

    DetailViewController *d = segue.destinationViewController;
    d.selection = currentSelection;

}

Answer 1

Ok - the problem was that GLKViewController sets paused to YES when view exits. viewWillAppear wasn't actually being called - moving self.paused to viewDidAppear solved the problem.