Some shaders I wrote during my spare time, you can see it in real time and modify the code by clicking on the images below.
If you like this check Shadertoy, GLSL Sandbox and Vertex Shader Art.

ShaderToy

BentNormals PathTracingBSDF PathtracingBRDF Walk Like an Egyptian Fractal doodling Lost Temple Malmousque Niolon Morning Commute Path Racer Paroi Jaune 30 Torus Another cloud tunnel Truchet variation Cookie Guardians SDF Fake Area Light Sponza Atrium Pachamama Alien Cocoons La calanque Flame The cubitree Metatunnel To the road of ribbon Point Based Global Illumination Main demoparty logo Abstract #1 Fake Sky Volumetric clouds