Medium EffectsAnimated

Scrolling rippling staggered dots with a border

A picture built in steps: scroll, then ripple the space, then draw staggered dots, then color it, then finish with a border. Every step is listed below with its exact numbers.

The target picture for the shader challenge "Scrolling rippling staggered dots with a border"
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 499 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: Scroll
p.x += time * -0.15
Step 2: Ripple the space
p.x += 0.09 * sin(p.y * 11.0)
Step 3: Pattern
g = p * 4.0; g.x += 0.5 * fmod(floor(g.y) + 1000.0, 2.0); f = frac(g) - 0.5; m = 1.0 - smoothstep(0.32, 0.35, length(f))
Step 4: Colors
lerp(float3(0.9, 0.9, 0.95), float3(0.3, 0.1, 0.86), m)
Step 5: Finish
edge = min(min(uv.x, 1.0 - uv.x), min(uv.y, 1.0 - uv.y)); col = lerp(float3(0.96, 0.05, 0.82), col, smoothstep(0.045, 0.051, 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