Example shaders in cocos2d-x

This is my implementation (and translation of the code from Objective-C to C++) of a simple cocos2d and glsl shader tutorial originally created by Krzysztof Zabłocki.

Original tutorial can be found here:

https://www.raywenderlich.com/2941-how-to-create-cool-effects-with-custom-shaders-in-opengl-es-2-0-and-cocos2d-2-x