Until now, application developers have no choice but to use the graphics hardware as it is built by the developers of hardware. In recent years, it became clear that the correct answer for OpenGL is to expose the new functionality in the form of high-level programming language - a new OpenGL Shading Language, developed by 3Dlavis, Inc., is the answer. This is a reference and a tutorial, and full of practical examples that will help developers learn the language and to create shaders in accordance with their own needs. This is one book all graphics developers will need to learn about new advances that are important in graphic programming.