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https://github.com/DanielnetoDotCom/YouPHPTube
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62 lines
1.1 KiB
JavaScript
62 lines
1.1 KiB
JavaScript
/**
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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': { value: null },
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'luminosityThreshold': { value: 1.0 },
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'smoothWidth': { value: 1.0 },
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'defaultColor': { value: new THREE.Color( 0x000000 ) },
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'defaultOpacity': { 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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