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Easy PatternsAnimated

Dot wave

A 30 × 22.5 grid of dots whose size ripples diagonally.

Play this challenge All challenges

The target picture for the shader challenge "Dot wave" — 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 332 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(30.0, 22.5)
Phase: time * 3.0 + (cell.x + cell.y) * 0.4
Size: r = 0.1 + 0.3 * (0.5 + 0.5 * sin(phase))
Edge: smoothstep(r - 0.04, r, dist)
Colors: float3(0.06,0.06,0.12) / float3(0.4,0.9,1.0)

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.