You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.1 KiB
57 lines
1.1 KiB
/**
|
|
* @author felixturner / http://airtight.cc/
|
|
*
|
|
* RGB Shift Shader
|
|
* Shifts red and blue channels from center in opposite directions
|
|
* Ported from http://kriss.cx/tom/2009/05/rgb-shift/
|
|
* by Tom Butterworth / http://kriss.cx/tom/
|
|
*
|
|
* amount: shift distance (1 is width of input)
|
|
* angle: shift angle in radians
|
|
*/
|
|
|
|
THREE.RGBShiftShader = {
|
|
|
|
uniforms: {
|
|
|
|
"tDiffuse": { value: null },
|
|
"amount": { value: 0.005 },
|
|
"angle": { value: 0.0 }
|
|
|
|
},
|
|
|
|
vertexShader: [
|
|
|
|
"varying vec2 vUv;",
|
|
|
|
"void main() {",
|
|
|
|
"vUv = uv;",
|
|
"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
|
|
|
|
"}"
|
|
|
|
].join( "\n" ),
|
|
|
|
fragmentShader: [
|
|
|
|
"uniform sampler2D tDiffuse;",
|
|
"uniform float amount;",
|
|
"uniform float angle;",
|
|
|
|
"varying vec2 vUv;",
|
|
|
|
"void main() {",
|
|
|
|
"vec2 offset = amount * vec2( cos(angle), sin(angle));",
|
|
"vec4 cr = texture2D(tDiffuse, vUv + offset);",
|
|
"vec4 cga = texture2D(tDiffuse, vUv);",
|
|
"vec4 cb = texture2D(tDiffuse, vUv - offset);",
|
|
"gl_FragColor = vec4(cr.r, cga.g, cb.b, cga.a);",
|
|
|
|
"}"
|
|
|
|
].join( "\n" )
|
|
|
|
};
|