Painting Worlds with Raymarching: A GLSL Shader Journey

This article details creating 3D scenes using Raymarching and GLSL shaders. Starting with fundamental concepts like ray marching and signed distance functions (SDFs), it guides you through building simple shapes and combining them using SDF operators (like min and smoothmin) to create complex scenes. Advanced topics covered include lighting models, soft shadows, creating infinitely repeating scenes, and generating realistic terrains using noise derivatives. The author culminates with a stunning example of an infinite Martian landscape, sharing their creative process and insights.