With OpenGL and shaders written in the OpenGL Shading Language, applications can perform better, achieving stunning graphics effects by using the capabilities of both the visual processing unit and the central processing unit. In this book, you will find a detailed introduction to the OpenGL Shading Language (GLSL) and the new OpenGL function calls that support it. Once this foundation has been set, this book explores the creation and manipulation of shaders using new OpenGL function calls. OpenGL Shading Language, Third Edition, includes updated descriptions for the language and all the GLSL entry points added though OpenGL 3.1, and updated chapters which discuss the transformation, lighting, shadows, and surface characteristics. The third edition also features an updated shader to OpenGL Shading Language Version 1.40 and their underlying algorithms, including Traditional fixed functionality of OpenGL textures procedural textures are stored and Image-based Lighting lighting with ambient occlusion harmonic ball shadow volume and shadow mapping using deferred lighting Ward? BRDF Model Color plate section illustrates the power and sophistication of the OpenGL Shading Language.