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Breaking temporality in the color map pass graininess.

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Adding a more finely tuned color map for 1999
This commit is contained in:
Rezmason
2018-12-27 02:39:04 -08:00
parent ffcbae6519
commit 1f69d59249
2 changed files with 31 additions and 9 deletions
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14
js/ColorMapPass.js
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@@ -13,7 +13,7 @@ const easeInOutQuad = input => {
const ARRAY_SIZE = 2048;
THREE.ColorMapPass = function (entries, ditherMagnitude = 1) {
THREE.ColorMapPass = function (entries, ditherMagnitude = 1, graininess = 100) {
const colors = Array(ARRAY_SIZE).fill().map(_ => new THREE.Vector3(0, 0, 0));
const sortedEntries = entries.slice().sort((e1, e2) => e1.at - e2.at).map(entry => ({
color: entry.color,
@@ -42,12 +42,14 @@ THREE.ColorMapPass = function (entries, ditherMagnitude = 1) {
THREE.UVMapping);
this.dataTexture.magFilter = THREE.LinearFilter;
this.dataTexture.needsUpdate = true;
this.graininess = graininess;
this.shader = {
uniforms: {
tDiffuse: { value: null },
tColorData: { value: this.dataTexture },
ditherMagnitude: { value: ditherMagnitude }
ditherMagnitude: { value: ditherMagnitude },
tTime: { value: 0 }
},
vertexShader: `
@@ -64,16 +66,17 @@ THREE.ColorMapPass = function (entries, ditherMagnitude = 1) {
uniform sampler2D tDiffuse;
uniform sampler2D tColorData;
uniform float ditherMagnitude;
uniform float tTime;
varying vec2 vUv;
highp float rand( const in vec2 uv ) {
highp float rand( const in vec2 uv, const in float t ) {
const highp float a = 12.9898, b = 78.233, c = 43758.5453;
highp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );
return fract(sin(sn) * c);
return fract(sin(sn) * c + t);
}
void main() {
gl_FragColor = texture2D( tColorData, vec2( texture2D( tDiffuse, vUv ).r - rand( gl_FragCoord.xy ) * ditherMagnitude, 0.0 ) );
gl_FragColor = texture2D( tColorData, vec2( texture2D( tDiffuse, vUv ).r - rand( gl_FragCoord.xy, tTime ) * ditherMagnitude, 0.0 ) );
}
`
};
@@ -85,6 +88,7 @@ THREE.ColorMapPass.prototype = Object.assign( Object.create( THREE.Pass.prototyp
constructor: THREE.ColorMapPass,
render: function() {
this.uniforms[ "tColorData" ].value = this.dataTexture;
this.uniforms[ "tTime" ].value = (Date.now() % this.graininess) / this.graininess;
THREE.ShaderPass.prototype.render.call(this, ...arguments);
}
});