Right now I’m trying to freshen up what little I know of OpenGL ES 1.1 so I’m up to speed with OpenGL ES 2.0. I keep using the old ES 1.1 functions, so I thought I’d take the opportunity to re-learn OpenGL ES 2.0 from the ground up.
This OpenGL ES 2.0 Primer is helpful if you want to gain an understanding what’s different (and cool) about OpenGL ES 2.0 when compared to 1.1. It won’t teach you how to use OpenGL ES 2.0 though. The High-End 3D Graphics with OpenGL ES 2.0 PDF covers the concepts in greater detail, and quickly runs you through all important processes from initialization to compiling shaders to shutting down OpenGL ES 2.0. Again I didn’t learn how to program but it helped me understand the GL ES 2.0 concepts.
But what I really wanted was to learn how to do things with OpenGL in the context of cocos2d. Which means I just need to draw stuff, I don’t need to know how to load textures and setup the viewport and things like that. Nevertheless, Ray Wenderlich has done a great job explaining how to create a OpenGL ES 2.0 iPhone project from scratch. And Jeff LaMarche covered ES 2.0 shaders in great detail. Continue reading »
