three-stdlib/shaders/VerticalTiltShiftShader.js

stand-alone library of threejs examples

const VerticalTiltShiftShader = {
  uniforms: {
    tDiffuse: { value: null },
    v: { value: 1 / 512 },
    r: { value: 0.35 }
  },
  vertexShader: [
    "varying vec2 vUv;",
    "void main() {",
    "	vUv = uv;",
    "	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
    "}"
  ].join("\n"),
  fragmentShader: [
    "uniform sampler2D tDiffuse;",
    "uniform float v;",
    "uniform float r;",
    "varying vec2 vUv;",
    "void main() {",
    "	vec4 sum = vec4( 0.0 );",
    "	float vv = v * abs( r - vUv.y );",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y - 4.0 * vv ) ) * 0.051;",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y - 3.0 * vv ) ) * 0.0918;",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y - 2.0 * vv ) ) * 0.12245;",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y - 1.0 * vv ) ) * 0.1531;",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y ) ) * 0.1633;",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y + 1.0 * vv ) ) * 0.1531;",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y + 2.0 * vv ) ) * 0.12245;",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y + 3.0 * vv ) ) * 0.0918;",
    "	sum += texture2D( tDiffuse, vec2( vUv.x, vUv.y + 4.0 * vv ) ) * 0.051;",
    "	gl_FragColor = sum;",
    "}"
  ].join("\n")
};
export {
  VerticalTiltShiftShader
};
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