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Easy Nature

Sunset hills

A gradient sky, a glowing sun and a wavy dark horizon.

Play this challenge All challenges

The target picture for the shader challenge "Sunset hills" — 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 392 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

Sky: lerp(float3(1.0,0.45,0.2), float3(0.2,0.1,0.4), uv.y)
Sun: center float2(0.0, -0.05), radius 0.2 (edge 0.2 → 0.205), float3(1.0, 0.9, 0.5)
Hills: below y = 0.28 + 0.05 * sin(uv.x * 7.0), float3(0.08, 0.05, 0.12)

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.