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Medium MeshAnimated

Hologram

A cyan hologram: strong rim glow, faint body and scrolling scanlines.

Play this challenge All challenges

The target picture for the shader challenge "Hologram" — 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 221 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

Fresnel: f = pow(1.0 - saturate(dot(i_normal, i_viewDir)), 2.0)
Scanlines: 0.7 + 0.3 * sin(i_worldPos.y * 60.0 - time * 5.0)
Color: float3(0.2, 0.9, 1.0) * (f * 1.5 + 0.15) * scanlines

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.