GLSL

GLSL (OpenGL Shading Language) is a specialized programming language used to create visual effects in computer graphics, especially within 3D rendering. It allows developers to write small programs called shaders that run directly on the graphics card, controlling how surfaces look—such as their color, brightness, and texture. By customizing these shaders, artists and programmers can produce realistic lighting, reflections, and complex visual effects in real-time applications like video games and simulations. Essentially, GLSL provides the tools to enhance visual detail and realism by giving precise control over the rendering process at the hardware level.