mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-16 19:17:57 +01:00
92 lines
2.4 KiB
JavaScript
92 lines
2.4 KiB
JavaScript
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/**
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* @author alteredq / http://alteredqualia.com/
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*
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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": { type: "t", value: null },
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"screenWidth": { type: "f", value: 1024 },
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"screenHeight": { type: "f", value: 1024 },
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"sampleDistance": { type: "f", value: 0.94 },
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"waveFactor": { type: "f", 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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