Easy Filters
Pixelated ring outline
A picture built in steps: pixelate, then draw ring outline, then color it. 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 301 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: Pixelate
p = (floor(p * 16.0) + 0.5) / 16.0 (snap the position to a grid of 16 blocks per unit)- Step 2: Pattern
d = abs(length(p) - 0.34) - 0.34 * 0.18; m = 1.0 - smoothstep(0.012, 0.02, abs(d))- Step 3: Colors
lerp(float3(0.19, 0.16, 0.1), float3(0.85, 0.84, 0.32), m)
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