Hard EffectsAnimated
Four-way mirrored twisted spiral with a pulsing brightness
A picture built in steps: mirror both ways, then twist, then draw spiral, 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 486 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: Mirror both ways
p = abs(p)- Step 2: Twist
angle = 5.5 * (1.0 - smoothstep(0.0, 0.65, length(p))) + time * 0.5; turn p by that angle- Step 3: Pattern
m = smoothstep(-0.2, 0.2, sin(2.0 * atan2(p.y, p.x) + 3.5 * length(p) * 6.28318))- Step 4: Colors
0.5 + 0.5 * cos(6.28318 * (m * 0.8 + float3(0.8, 0.9, 0.3)))- Step 5: Finish
col *= 0.85 + 0.15 * sin(time * 3.0)
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