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mobile-query-three-vendor-three.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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