Medium Effects
Rippling tilted spiral with scanlines
A picture built in steps: ripple the space, then tilt, then draw spiral, 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 519 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: Ripple the space
p.x += 0.08 * sin(p.y * 9.0)- Step 2: Tilt
turn p by 0.9 radians: c = cos(0.9), s = sin(0.9), p = float2(c * p.x + s * p.y, -s * p.x + c * p.y)- Step 3: Pattern
m = smoothstep(-0.2, 0.2, sin(6.0 * atan2(p.y, p.x) + 1.5 * length(p) * 6.28318))- Step 4: Colors
lerp(lerp(float3(0.14, 0.09, 0.06), float3(0.91, 0.6, 0.29), smoothstep(0.0, 0.5, m)), float3(0.38, 0.92, 0.8), smoothstep(0.5, 1.0, m))- Step 5: Finish
col *= 0.8 + 0.2 * step(0.5, frac(uv.y * 120.0))
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