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What is Ray Marching?

In this shader tutorial, we will go over the basics of Ray Marching with Signed Distance Fields. We start by understanding the theory behind the algorithm. Then we implement a simple ray marcher in GLSL. After that, we calculate the normals and add lighting to the scene. Then we run the ray march algorithm again to calculate shadows. Finally, we learn how to blend to SDFs using the smooth union operation. 📖 Code - https://github.com/SuboptimalEng/shad... 🎥 YouTube -    / suboptimaleng   💻 GitHub - https://github.com/SuboptimalEng 🐦 Twitter -   / suboptimaleng   🧵 Threads - https://www.threads.net/@suboptimaleng 📸 Instagram -   / suboptimaleng   == [ Resources ] == Ray Marching Tutorial - https://michaelwalczyk.com/blog-ray-m... Inigo Quilez’s Articles - https://iquilezles.org/articles The Book of Shaders - https://thebookofshaders.com Simon Dev’s Shader Course - https://simondev.teachable.com Intro to Phong Lighting -    • Introduction to Phong Lighting   VS Code GLSL Shader Setup Guide -    • How to Write GLSL Shaders in VS Code   == [ Timestamps ] == 00:00 Intro to Ray Marching 00:59 Ray Marching Algorithm 03:15 Coding a Ray Marcher 06:18 Add Lighting with Normals 07:47 Ray March Shadows 09:14 Blend with Smooth Union