Update note: This tutorial has been updated to Swift 4.1 and Xcode 9.3 by Felipe Laso-Marsetti. The original tutorial was written by Ray Wenderlich. If you're interested in graphics programming, chances are that you've read about OpenGL, which remains the most-adopted API from a hardware and software perspective. Apple has developed a framework called GLKit to help developers create apps that leverage OpenGL and to abstract boilerplate code. It also allows developers to focus on drawing, not on getting the project set up. You'll learn how all of this works in this GLKit tutorial for iOS. GLKit provides functionality in four areas: Views and View Controllers: These abstract much of the boilerplate code that GLKit uses to set up a basic OpenGL ES (Embedded Systems) project. Effects: These implement common shading behaviors and are a handy way of setting up basic lighting, shading, reflection mapping and skybox effects. Math: Provides helpers and functions for common math routines like vector and matrix manipulation.


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