GLSL Language Specification

The GLSL (OpenGL Shading Language) Specification defines the rules and syntax for writing shaders—small programs that run on a graphics card to control how graphics are rendered. It describes the language's structure, data types, functions, and how shaders interact with graphics data. The goal is to enable developers to create efficient, flexible visual effects and transformations. Essentially, it provides a standardized coding environment so shaders are consistent and portable across different hardware and graphics systems.