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Beginning OpenGL ES 2.0 with GLKit Part 1

A tutorial to get you up-to-speed with the basics of using OpenGL with GLKit, even if you have no experience whatsoever.

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/3002-beginning-opengl-es-2-0-with-glkit-part-1

If using this opengl es framework, how can I use PBR shader from ARKit on some model? I found ambient light intensity, but I don’t know how to get light direction at each ARframe, is there a way? Is there any way I can use the SphericalHarmonicsCoefficient to do anything in this framework?

This tutorial is more than six months old so questions are no longer supported at the moment for it. We will update it as soon as possible. Thank you! :]