Hard EffectsAnimated
Twisted wavy bands with a border
A picture built in steps: twist, then draw wavy bands, then color it, then finish with a border. 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 544 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, 0.45, length(p))) + time * 0.6; turn p by that angle- Step 2: Pattern
m = 0.5 + 0.5 * sin(p.x * 6.0 + sin(p.y * 9.0) * 3.0)- Step 3: Colors
lerp(float3(0.86, 0.87, 0.95), float3(0.24, 0.17, 0.7), m)- Step 4: Finish
edge = min(min(uv.x, 1.0 - uv.x), min(uv.y, 1.0 - uv.y)); col = lerp(float3(0.71, 0.2, 0.96), col, smoothstep(0.035, 0.041, edge))
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