Shader Noise

Procedural noise creates natural-looking randomness. Unlike random(), noise is coherent—nearby inputs produce nearby outputs.

Quick Start

// Simple usage
float n = snoise(uv * 5.0);              // Simplex 2D
float n = snoise(vec3(uv, uTime));       // Animated 3D
float n = fbm(uv, 4);                    // Layered detail

// Common range adjustments
float n01 = n * 0.5 + 0.5;               // [-1,1] → [0,1]
float sharp = step(0.0, n);              // Binary threshold
float smooth = smoothstep(-0.2, 0.2, n); // Soft threshold

Noise Types Comparison