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Ray Marching in Unity

Javier Salcedo,
Telecom and Graphics Engineer,
Technical artist & producer at Virtual Phenix Games

Please consider using http://lygia.xyz instead of copy/pasting this functions. It expand suport for voronoi, voronoise, fbm, noise, worley, noise, derivatives and much more, through simple file dependencies. Take a look to https://github.com/patriciogonzalezvivo/lygia/tree/main/generative

float rand(float n){return fract(sin(n) * 43758.5453123);}

float noise(float p){
	float fl = floor(p);
  float fc = fract(p);

	// When creating shaders for Universal Render Pipeline you can you the ShaderGraph which is super AWESOME!
	// However, if you want to author shaders in shading language you can use this teamplate as a base.
	// Please note, this shader does not necessarily match perfomance of the built-in URP Lit shader.
	// This shader works with URP 7.1.x and above
	Shader "Universal Render Pipeline/Custom/Physically Based Example"
	{
	Properties
	{
	// Specular vs Metallic workflow
	[HideInInspector] _WorkflowMode("WorkflowMode", Float) = 1.0