The book appears to stay within the GLES2 subset of the API. It doesn't use the matrix stack, fixed attributes, stock lighting, nothing. It's all shaders. That'

The book appears to stay within the GLES2 subset of the API. It doesn't use the matrix stack, fixed attributes, stock lighting, nothing. It's all shaders. That's probably not an accident. As you learn things, just check the reference to make sure GLES2 supports them: http://www.khronos.org/opengles/sdk/docs/man/ http://www.khronos.org/opengles/sdk/docs/man/ If you're stuck with GLES1.x then the book is useless to you.