topical media & game development
mobile-query-three-vendor-three-r53.js-shaders-LuminosityShader.js / js
author: alteredq / alteredqualia.com/
Luminosity
http://en.wikipedia.org/wiki/Luminosity
THREE.LuminosityShader = {
uniforms: {
"tDiffuse": { type: "t", value: null }
},
vertexShader: [
"varying vec2 vUv;",
"void main() {",
"vUv = uv;",
"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
"}"
].join("\n"),
fragmentShader: [
"uniform sampler2D tDiffuse;",
"varying vec2 vUv;",
"void main() {",
"vec4 texel = texture2D( tDiffuse, vUv );",
"vec3 luma = vec3( 0.299, 0.587, 0.114 );",
"float v = dot( texel.xyz, luma );",
"gl_FragColor = vec4( v, v, v, texel.w );",
"}"
].join("\n")
};
(C) Æliens
04/09/2009
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