Medium EffectsAnimated
Bulging tilted grid with a pulsing brightness
A picture built in steps: bulge, then tilt, then draw grid, 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 409 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: Bulge
p *= 1.0 + 1.8 * dot(p, p)- Step 2: Tilt
turn p by 0.7 radians: c = cos(0.7), s = sin(0.7), p = float2(c * p.x + s * p.y, -s * p.x + c * p.y)- Step 3: Pattern
e = abs(frac(p * 8.0) - 0.5); m = step(0.46, max(e.x, e.y)) (lines on the cell borders)- Step 4: Colors
lerp(float3(0.68, 0.2, 0.73), float3(0.56, 0.74, 0.2), m)- Step 5: Finish
col *= 0.8 + 0.2 * sin(time * 4.5)
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