Skip to the content

Easy Effects

Vignette

A warm yellow screen that fades to black towards the corners.

Play this challenge All challenges

The target picture for the shader challenge "Vignette" — 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 192 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

Center color: float3(0.95, 0.7, 0.3)
Fade: smoothstep(0.25, 0.75, distance from center)
Space: aspect-corrected

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.