Hard Effects
5-way kaleidoscope of wave lattice with scanlines
A picture built in steps: kaleidoscope, then draw wave lattice, then color it, then finish with scanlines. 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 446 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: Kaleidoscope
a = atan2(p.y, p.x); a = abs(fmod(a + 6.2831853, 1.257) - 0.628); p = length(p) * float2(cos(a), sin(a)) (5 mirrored wedges)- Step 2: Pattern
m = smoothstep(-0.25, 0.25, sin(p.x * 8.0) * sin(p.y * 8.0))- Step 3: Colors
lerp(float3(0.95, 0.87, 0.9), lerp(float3(0.84, 0.21, 0.36), float3(0.39, 0.77, 0.15), uv.y), m)- Step 4: Finish
col *= 0.8 + 0.2 * step(0.5, frac(uv.y * 80.0))
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