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Easy Patterns

Polka dots

A 10 × 7.5 grid of round pink dots.

Play this challenge All challenges

The target picture for the shader challenge "Polka dots" — Recreate this picture. You pass at a 99% match, then try to write it in fewer characters than the par.

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 215 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

Grid: uv * float2(10.0, 7.5)
Dot radius: 0.3 with a 0.04 soft edge
Background: float3(0.98, 0.85, 0.9)
Dots: float3(0.9, 0.3, 0.5)

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.