12.7 What Next?
This chapter should have helped unravel a bit of the introductory mysteries of GLSL without getting unnecessarily technical.
If you'd like to continue learning GLSL to experiment with more complex 3D scenes and material shaders, or with more complex 2D compositing tools and generative textures, below are some resources:
OpenGL Main reference page: http://www.opengl.org/wiki/Main_Page
OpenGL General information: http://www.opengl.org/wiki/General_OpenGL
Derivative Wiki: http://www.derivative.ca/wiki088/index.php?title=Glsl
Shader Toy: https://www.shadertoy.com/