OpenGL 4 Shading Language Cookbook, Second Edition

The OpenGL Shading Language (GLSL) is now a fundamental and critical part of programming with OpenGL. It provides us with unprecedented flexibility and power by making the formerly fixed-function graphics pipeline programmable. With GLSL, we can leverage the Graphics Processing Unit (GPU) to implement advanced and sophisticated rendering techniques and even do arbitrary computation. With GLSL 4.x, programmers can do more with the GPU than ever before thanks to new shader stages such as tessellation shaders and compute shaders.