Medium EffectsAnimated

6×6 tiled spinning diamond lattice with a border

A picture built in steps: tile, then spin, then draw diamond lattice, then color it, then finish with a border. Every step is listed below with its exact numbers.

The target picture for the shader challenge "6×6 tiled spinning diamond lattice 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 526 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: Tile
p = frac(p * 6.0 + 0.5) - 0.5 (repeat the picture 6 times across)
Step 2: Spin
turn p by time * -0.4 radians: c = cos(angle), s = sin(angle), p = float2(c * p.x + s * p.y, -s * p.x + c * p.y)
Step 3: Pattern
e = abs(frac(p * 5.0) - 0.5); m = step(0.4, e.x + e.y)
Step 4: Colors
lerp(float3(0.87, 0.95, 0.9), float3(0.11, 0.88, 0.69), m)
Step 5: Finish
edge = min(min(uv.x, 1.0 - uv.x), min(uv.y, 1.0 - uv.y)); col = lerp(float3(0.15, 0.52, 0.93), col, smoothstep(0.06, 0.066, 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