mirror of
https://github.com/photonstorm/phaser
synced 2024-11-23 13:13:43 +00:00
108 lines
2.3 KiB
JavaScript
108 lines
2.3 KiB
JavaScript
/**
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* Original author of PixelateFilter: Mat Groves http://matgroves.com/ @Doormat23
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* adapted for Phaser.js
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*/
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/**
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* This filter applies a pixelate effect making display objects appear 'blocky'.
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* @class PixelateFilter
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* @constructor
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*/
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Phaser.Filter.Pixelate = function(game) {
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Phaser.Filter.call(this, game);
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this.uniforms.invert = { type: '1f', value: 0 };
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this.uniforms.pixelSize = { type: '2f', value: { x: 1.0, y: 1.0 } };
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this.uniforms.dimensions = { type: '2f', value: { x: 1000.0, y: 1000.0 } };
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this.fragmentSrc = [
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"precision mediump float;",
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"varying vec2 vTextureCoord;",
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"uniform vec2 dimensions;",
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"uniform vec2 pixelSize;",
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"uniform sampler2D uSampler;",
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"void main(void)",
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"{",
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"vec2 coord = vTextureCoord;",
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"vec2 size = dimensions.xy/pixelSize;",
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"vec2 color = floor( ( vTextureCoord * size ) ) / size + pixelSize/dimensions.xy * 0.5;",
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"gl_FragColor = texture2D(uSampler, color);",
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"}"
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];
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};
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Phaser.Filter.Pixelate.prototype = Object.create(Phaser.Filter.prototype);
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Phaser.Filter.Pixelate.prototype.constructor = Phaser.Filter.Pixelate;
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/**
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* An object with visible x and y properties that are used to define the size of the filter effect per pixel.
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*
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* @property size
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* @type Phaser.Point
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*/
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Object.defineProperty(Phaser.Filter.Pixelate.prototype, 'size', {
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get: function() {
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return this.uniforms.pixelSize.value;
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},
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set: function(value) {
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this.dirty = true;
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this.uniforms.pixelSize.value = value;
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}
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});
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/**
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* A value that defines the horizontal size of the filter effect per pixel.
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*
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* @property sizeX
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* @type number
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*/
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Object.defineProperty(Phaser.Filter.Pixelate.prototype, 'sizeX', {
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get: function() {
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return this.uniforms.pixelSize.value.x;
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},
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set: function(value) {
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this.dirty = true;
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this.uniforms.pixelSize.value.x = value;
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}
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});
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/**
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* A value that defines the vertical size of the filter effect per pixel.
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*
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* @property sizeY
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* @type number
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*/
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Object.defineProperty(Phaser.Filter.Pixelate.prototype, 'sizeY', {
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get: function() {
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return this.uniforms.pixelSize.value.y;
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},
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set: function(value) {
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this.dirty = true;
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this.uniforms.pixelSize.value.y = value;
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}
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});
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