mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
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57 lines
1.1 KiB
JavaScript
57 lines
1.1 KiB
JavaScript
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/**
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* @author felixturner / http://airtight.cc/
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*
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* RGB Shift Shader
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* Shifts red and blue channels from center in opposite directions
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* Ported from http://kriss.cx/tom/2009/05/rgb-shift/
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* by Tom Butterworth / http://kriss.cx/tom/
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*
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* amount: shift distance (1 is width of input)
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* angle: shift angle in radians
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*/
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THREE.RGBShiftShader = {
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uniforms: {
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"tDiffuse": { type: "t", value: null },
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"amount": { type: "f", value: 0.005 },
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"angle": { 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 float amount;",
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"uniform float angle;",
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"varying vec2 vUv;",
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"void main() {",
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"vec2 offset = amount * vec2( cos(angle), sin(angle));",
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"vec4 cr = texture2D(tDiffuse, vUv + offset);",
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"vec4 cga = texture2D(tDiffuse, vUv);",
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"vec4 cb = texture2D(tDiffuse, vUv - offset);",
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"gl_FragColor = vec4(cr.r, cga.g, cb.b, cga.a);",
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"}"
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].join("\n")
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};
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