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/**
* @author alteredq / http://alteredqualia.com/
*
* Luminosity
* http://en.wikipedia.org/wiki/Luminosity
*/
var LuminosityShader = {
uniforms: {
"tDiffuse": { value: null }
},
vertexShader: [
"varying vec2 vUv;",
"void main() {",
" vUv = uv;",
" gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
"}"
].join( "\n" ),
fragmentShader: [
"#include <common>",
"uniform sampler2D tDiffuse;",
"varying vec2 vUv;",
"void main() {",
" vec4 texel = texture2D( tDiffuse, vUv );",
" float l = linearToRelativeLuminance( texel.rgb );",
" gl_FragColor = vec4( l, l, l, texel.w );",
"}"
].join( "\n" )
};
export { LuminosityShader };
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