code: function drawPattern(pattern, x, y, width, height) {
           var key = "0,0," + width + "," + height;
           this.compositor.addQuad(pattern, key, x, y, width, height);
         }
docs: Draw a pattern within the given rectangle.
  @name drawPattern
  @memberOf me.WebGLRenderer.prototype
  @function
  @param {me.video.renderer.Texture} pattern Pattern object
  @param {Number} x
  @param {Number} y
  @param {Number} width
  @param {Number} height
  @see me.WebGLRenderer#createPattern