Vertex Shader

A vertex shader is a small program in 3D graphics that processes each point in a scene, called a vertex. It calculates things like the position, size, and how the vertex interacts with light, helping to shape and position objects within a scene. Essentially, it transforms raw vertex data into a form that can be properly displayed on the screen, ensuring objects appear correctly from different angles and under various lighting conditions. This process improves the realism and visual quality of 3D graphics in video games, simulations, and animations.