The example programs throughout the book use a framework of utility functions for performing common OpenGL ES 2.0 functions. The API provides routines for tasks such as creating a window, setting up callback functions, loading a shader, loading a program, and creating geometry. The purpose of this appendix is to provide documentation for the ES Framework API functions used throughout the book.
This section provides documentation on the core functions in the ES Framework API.
Initialize ES framework context. This must be called before calling any other functions.