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Easy Patterns

Tilted diamond

A picture built in steps: tilt, then draw diamond, then color it. Every step is listed below with its exact numbers.

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The target picture for the shader challenge "Tilted diamond" — 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 364 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: Tilt: turn p by 0.4 radians: c = cos(0.4), s = sin(0.4), p = float2(c * p.x + s * p.y, -s * p.x + c * p.y)
Step 2: Pattern: d = (abs(p.x) + abs(p.y)) * 0.7071 - 0.3; m = 1.0 - smoothstep(0.0, 0.006, d)
Step 3: Colors: lerp(float3(0.95, 0.41, 0.94), float3(0.54, 0.94, 0.37), 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.