title: Using OpenGL on top of a MKMapView?
body: <p>I've got some data that I would like to render on top of a MKMapView using OpenGL. Currently I can sort of achieve this by placing a transparent OpenGL layer on top of the MKMapView and drawing to it using OpenGL commands.</p>
  
  <p>However, the problem becomes synching the drawing of the OpenGL layer with the drawing that MKMapView does. I can kind of get around this by drawing on touch events, this works well until you "flick" the map which causes a continuous series of draws for the animation that I don't detect.</p>
  
  <p>Another idea was to use a MKOverlayView and hope that OpenGL drawing could be done with it. But I'm not sure how exactly to app</p>