Hard EffectsAnimated
Twisted fractal noise with a fade to dark at the bottom
A picture built in steps: twist, then draw fractal noise, then color it, then finish with a fade to dark at the bottom. Every step is listed below with its exact numbers.
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 1065 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: Twist
angle = 3.0 * (1.0 - smoothstep(0.0, 0.55, length(p))) + time * 0.5; turn p by that angle- Step 2: Pattern
m = smoothstep(0.25, 0.75, fbm(p * 4.0 + float2(0.0, 3.0)))- Step 3: Colors
lerp(float3(0.9, 0.92, 0.96), lerp(float3(0.14, 0.24, 0.72), float3(0.84, 0.22, 0.28), uv.y), m)- Step 4: Finish
col *= 0.75 + 0.25 * uv.y
Helper functions provided
The toolbox has: hash(), vnoise(), fbm(). Add them above your frag function with one click.
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