Once you get your first OpenGL view working on an iPhone or iPad, one of the first things you’ll likely notice is that when you rotate your device, the rendered image in that view stretches during the animated rotation of the display. This post explains why this happens, and what you can do to deal with it. Example code can be found at https://github.com/codefromabove/OpenGLDeviceRotation.

Continue reading OpenGL on iOS: Device Orientation Changes Without All The Stretching →