Resolving Scaled Fragments Issue in OpenGL ES 2.0 on iPhone Devices

Rendering 2D Shadows in iPhone Games with cocos2d: A Deep Dive into Depth Buffers and Accurate Shadow Rendering

Minimising glDrawArray Calls in OpenGl ES: Strategies for Performance Improvement

Understanding glReadPixels() Fails in iOS 6.0: Causes, Fixes, and Best Practices

Understanding the Limitations of Context Sharing in iOS: A Guide to Vertex Array Objects (VAOs)

Understanding OpenGL ES Programming Cookbook