Hard FiltersAnimated
Pixelated twisted wavy bands with a pulsing brightness
A picture built in steps: pixelate, then twist, then draw wavy bands, then color it, then finish with a pulsing brightness. Every step is listed below with its exact numbers.
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 557 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: Pixelate
p = (floor(p * 32.0) + 0.5) / 32.0 (snap the position to a grid of 32 blocks per unit)- Step 2: Twist
angle = 2.5 * (1.0 - smoothstep(0.0, 0.5, length(p))) + time * 0.4; turn p by that angle- Step 3: Pattern
m = 0.5 + 0.5 * sin(p.x * 6.0 + sin(p.y * 4.0) * 2.0)- Step 4: Colors
lerp(lerp(float3(0.16, 0.09, 0.13), float3(0.81, 0.32, 0.63), smoothstep(0.0, 0.5, m)), float3(0.41, 0.84, 0.49), smoothstep(0.5, 1.0, m))- Step 5: Finish
col *= 0.8 + 0.2 * sin(time * 2.5)
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.
Start coding