#

API Docs for: 1.4.3
Show: Inherited Protected Private Deprecated

# File: src/pixi/filters/PixelateFilter.js

    /**
     * @author Mat Groves http://matgroves.com/ @Doormat23
     */

    /**
     *
     * This filter applies a pixelate effect making display objects appear 'blocky'
     * @class PixelateFilter
     * @contructor
     */
    PIXI.PixelateFilter = function()
    {
        PIXI.AbstractFilter.call( this );

        this.passes = [this];

        // set the uniforms
        this.uniforms = {
            invert: {type: '1f', value: 0},
            dimensions: {type: '4fv', value:new Float32Array([10000, 100, 10, 10])},
            pixelSize: {type: '2f', value:{x:10, y:10}},
        };

        this.fragmentSrc = [
            'precision mediump float;',
            'varying vec2 vTextureCoord;',
            'varying vec4 vColor;',
            'uniform vec2 testDim;',
            'uniform vec4 dimensions;',
            'uniform vec2 pixelSize;',
            'uniform sampler2D uSampler;',

            'void main(void) {',
            '   vec2 coord = vTextureCoord;',

            '   vec2 size = dimensions.xy/pixelSize;',

            '   vec2 color = floor( ( vTextureCoord * size ) ) / size + pixelSize/dimensions.xy * 0.5;',
            '   gl_FragColor = texture2D(uSampler, color);',
            '}'
        ];
    };

    PIXI.PixelateFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
    PIXI.PixelateFilter.prototype.constructor = PIXI.PixelateFilter;

    /**
     *
     * This a point that describes the size of the blocs. x is the width of the block and y is the the height
     * @property size
     * @type Point
     */
    Object.defineProperty(PIXI.PixelateFilter.prototype, 'size', {
        get: function() {
            return this.uniforms.pixelSize.value;
        },
        set: function(value) {
            this.dirty = true;
            this.uniforms.pixelSize.value = value;
        }
    });