Medium Effects
Rippling zigzag stripes with a border
A picture built in steps: ripple the space, then draw zigzag stripes, 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 414 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 += 0.03 * sin(p.y * 8.0)- Step 2: Pattern
m = step(0.5, frac((p.y + abs(frac(p.x * 6.0) - 0.5) * 0.25) * 5.0))- Step 3: Colors
lerp(float3(0.68, 0.89, 0.23), float3(0.78, 0.44, 0.92), m)- Step 4: Finish
edge = min(min(uv.x, 1.0 - uv.x), min(uv.y, 1.0 - uv.y)); col = lerp(float3(0.5, 0.94, 0.57), 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