Medium EffectsAnimated
Spinning wavy bands with a border
A picture built in steps: spin, 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 488 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 * 0.5 radians: c = cos(angle), s = sin(angle), p = float2(c * p.x + s * p.y, -s * p.x + c * p.y)- Step 2: Pattern
m = 0.5 + 0.5 * sin(p.x * 14.0 + sin(p.y * 6.0) * 2.5)- Step 3: Colors
lerp(float3(0.19, 0.06, 0.19), float3(0.88, 0.24, 0.76), m)- Step 4: Finish
edge = min(min(uv.x, 1.0 - uv.x), min(uv.y, 1.0 - uv.y)); col = lerp(float3(0.94, 0.49, 0.58), 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