text: /**
   * @author Mat Groves http://matgroves.com/ @Doormat23
   */
  
  /**
   * This filter applies a pixelate effect making display objects appear 'blocky'.
   * 
   * @class PixelateFilter
   * @extends AbstractFilter
   * @constructor
   */
  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 PIXI.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 blocks. x is the width of the block and y is 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;
      }
  });
  