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65 lines
1.2 KiB
65 lines
1.2 KiB
/**
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* @author bhouston / http://clara.io/
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*
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* Luminosity
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* http://en.wikipedia.org/wiki/Luminosity
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*/
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THREE.LuminosityHighPassShader = {
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shaderID: "luminosityHighPass",
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uniforms: {
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"tDiffuse": { type: "t", value: null },
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"luminosityThreshold": { type: "f", value: 1.0 },
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"smoothWidth": { type: "f", value: 1.0 },
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"defaultColor": { type: "c", value: new THREE.Color( 0x000000 ) },
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"defaultOpacity": { type: "f", value: 0.0 }
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},
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vertexShader: [
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"varying vec2 vUv;",
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"void main() {",
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"vUv = uv;",
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"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
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"}"
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].join("\n"),
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fragmentShader: [
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"uniform sampler2D tDiffuse;",
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"uniform vec3 defaultColor;",
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"uniform float defaultOpacity;",
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"uniform float luminosityThreshold;",
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"uniform float smoothWidth;",
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"varying vec2 vUv;",
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"void main() {",
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"vec4 texel = texture2D( tDiffuse, vUv );",
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"vec3 luma = vec3( 0.299, 0.587, 0.114 );",
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"float v = dot( texel.xyz, luma );",
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"vec4 outputColor = vec4( defaultColor.rgb, defaultOpacity );",
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"float alpha = smoothstep( luminosityThreshold, luminosityThreshold + smoothWidth, v );",
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"gl_FragColor = mix( outputColor, texel, alpha );",
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"}"
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].join("\n")
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};
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