Medium EffectsAnimated
Spinning four-way mirrored zigzag stripes with a pulsing brightness
A picture built in steps: spin, then mirror both ways, then draw zigzag stripes, then color it, then finish with a pulsing brightness. 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 409 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 * 1.0 radians: c = cos(angle), s = sin(angle), p = float2(c * p.x + s * p.y, -s * p.x + c * p.y)- Step 2: Mirror both ways
p = abs(p)- Step 3: Pattern
m = step(0.5, frac((p.y + abs(frac(p.x * 6.0) - 0.5) * 0.45) * 5.0))- Step 4: Colors
lerp(float3(0.09, 0.8, 0.17), float3(0.6, 0.17, 0.91), m)- Step 5: Finish
col *= 0.8 + 0.2 * 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