Understanding EAGL Contexts, ShareGroups, RenderBuffers, and Framebuffers on iPhone OS for Efficient Graphics Rendering

Understanding Alpha Blend and Premultiplied PNGs in OpenGL ES 1.1 for iPhone: A Guide to Correct Color Display.

Minimising glDrawArray Calls in OpenGl ES: Strategies for Performance Improvement

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

Understanding OpenGL ES 2.0 Performance on iPhone Simulator, iPhone, and MacBook Pro: A Deep Dive into Tile-Based Rendering and Beyond