mirror of
https://github.com/DanielnetoDotCom/YouPHPTube
synced 2025-10-03 09:49:28 +02:00
89 lines
2.3 KiB
JavaScript
89 lines
2.3 KiB
JavaScript
/**
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* Focus shader
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* based on PaintEffect postprocess from ro.me
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* http://code.google.com/p/3-dreams-of-black/source/browse/deploy/js/effects/PaintEffect.js
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*/
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THREE.FocusShader = {
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uniforms: {
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'tDiffuse': { value: null },
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'screenWidth': { value: 1024 },
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'screenHeight': { value: 1024 },
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'sampleDistance': { value: 0.94 },
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'waveFactor': { value: 0.00125 }
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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 float screenWidth;',
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'uniform float screenHeight;',
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'uniform float sampleDistance;',
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'uniform float waveFactor;',
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'uniform sampler2D tDiffuse;',
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'varying vec2 vUv;',
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'void main() {',
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' vec4 color, org, tmp, add;',
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' float sample_dist, f;',
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' vec2 vin;',
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' vec2 uv = vUv;',
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' add = color = org = texture2D( tDiffuse, uv );',
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' vin = ( uv - vec2( 0.5 ) ) * vec2( 1.4 );',
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' sample_dist = dot( vin, vin ) * 2.0;',
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' f = ( waveFactor * 100.0 + sample_dist ) * sampleDistance * 4.0;',
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' vec2 sampleSize = vec2( 1.0 / screenWidth, 1.0 / screenHeight ) * vec2( f );',
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' add += tmp = texture2D( tDiffuse, uv + vec2( 0.111964, 0.993712 ) * sampleSize );',
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' if( tmp.b < color.b ) color = tmp;',
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' add += tmp = texture2D( tDiffuse, uv + vec2( 0.846724, 0.532032 ) * sampleSize );',
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' if( tmp.b < color.b ) color = tmp;',
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' add += tmp = texture2D( tDiffuse, uv + vec2( 0.943883, -0.330279 ) * sampleSize );',
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' if( tmp.b < color.b ) color = tmp;',
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' add += tmp = texture2D( tDiffuse, uv + vec2( 0.330279, -0.943883 ) * sampleSize );',
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' if( tmp.b < color.b ) color = tmp;',
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' add += tmp = texture2D( tDiffuse, uv + vec2( -0.532032, -0.846724 ) * sampleSize );',
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' if( tmp.b < color.b ) color = tmp;',
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' add += tmp = texture2D( tDiffuse, uv + vec2( -0.993712, -0.111964 ) * sampleSize );',
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' if( tmp.b < color.b ) color = tmp;',
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' add += tmp = texture2D( tDiffuse, uv + vec2( -0.707107, 0.707107 ) * sampleSize );',
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' if( tmp.b < color.b ) color = tmp;',
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' color = color * vec4( 2.0 ) - ( add / vec4( 8.0 ) );',
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' color = color + ( add / vec4( 8.0 ) - color ) * ( vec4( 1.0 ) - vec4( sample_dist * 0.5 ) );',
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' gl_FragColor = vec4( color.rgb * color.rgb * vec3( 0.95 ) + color.rgb, 1.0 );',
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'}'
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].join( '\n' )
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};
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