Medium EffectsAnimated

Spinning tilted wavy bands with a pulsing brightness

A picture built in steps: spin, then tilt, then draw wavy bands, then color it, then finish with a pulsing brightness. Every step is listed below with its exact numbers.

The target picture for the shader challenge "Spinning tilted wavy bands with a pulsing brightness"
Recreate this picture. You pass at a 99% match, then try to write it in fewer characters than the par.

How this challenge works

You write a fragment shader that draws the picture above, live in your browser. A match bar shows how close you are, and the score combines accuracy, code size (the par is 526 characters in Unity (Built-in)) and GPU speed. Work in HLSL, GLSL, WGSL, Metal or Godot and export the result when you are done.

The numbers you need

Space
p = (uv - 0.5) * float2(aspect, 1.0)
Step 1: Spin
turn p by time * 0.6 radians: c = cos(angle), s = sin(angle), p = float2(c * p.x + s * p.y, -s * p.x + c * p.y)
Step 2: Tilt
turn p by 0.6 radians: c = cos(0.6), s = sin(0.6), p = float2(c * p.x + s * p.y, -s * p.x + c * p.y)
Step 3: Pattern
m = 0.5 + 0.5 * sin(p.x * 6.0 + sin(p.y * 8.0) * 2.5)
Step 4: Colors
lerp(float3(0.15, 0.13, 0.06), lerp(float3(0.84, 0.83, 0.41), float3(0.4, 0.58, 0.84), uv.y), m)
Step 5: Finish
col *= 0.85 + 0.15 * sin(time * 3.5)

Solve it in your language

Unity (Built-in), Unity (URP), Unreal, Shadertoy / WebGL, OpenGL (LWJGL, raylib), three.js, GameMaker, LÖVE (Lua), Godot, Apple (iOS, macOS), WebGPU / Bevy.

Start coding