diff --git a/src/core/graphics/webgl/GraphicsRenderer.js b/src/core/graphics/webgl/GraphicsRenderer.js
index dafe4ba..c518279 100644
--- a/src/core/graphics/webgl/GraphicsRenderer.js
+++ b/src/core/graphics/webgl/GraphicsRenderer.js
@@ -372,10 +372,10 @@
 
     var recPoints = [];
     recPoints.push(x, y + radius);
-    recPoints = recPoints.concat(this.quadraticBezierCurve(x, y + height - radius, x, y + height, x + radius, y + height));
-    recPoints = recPoints.concat(this.quadraticBezierCurve(x + width - radius, y + height, x + width, y + height, x + width, y + height - radius));
-    recPoints = recPoints.concat(this.quadraticBezierCurve(x + width, y + radius, x + width, y, x + width - radius, y));
-    recPoints = recPoints.concat(this.quadraticBezierCurve(x + radius, y, x, y, x, y + radius));
+    this.quadraticBezierCurve(x, y + height - radius, x, y + height, x + radius, y + height, recPoints);
+    this.quadraticBezierCurve(x + width - radius, y + height, x + width, y + height, x + width, y + height - radius, recPoints);
+    this.quadraticBezierCurve(x + width, y + radius, x + width, y, x + width - radius, y, recPoints);
+    this.quadraticBezierCurve(x + radius, y, x, y, x, y + radius, recPoints);
 
     if (graphicsData.fill)
     {
@@ -435,11 +435,11 @@
  * @param cpY {number} Control point y
  * @param toX {number} Destination point x
  * @param toY {number} Destination point y
+ * @param [out] {number[]} The output array to add points into. If not passed, a new array is created.
  * @return {number[]} an array of points
  */
-GraphicsRenderer.prototype.quadraticBezierCurve = function (fromX, fromY, cpX, cpY, toX, toY)
+GraphicsRenderer.prototype.quadraticBezierCurve = function (fromX, fromY, cpX, cpY, toX, toY, out)
 {
-
     var xa,
         ya,
         xb,
@@ -447,7 +447,7 @@
         x,
         y,
         n = 20,
-        points = [];
+        points = out || [];
 
     function getPt(n1 , n2, perc) {
         var diff = n2 - n1;
@@ -471,6 +471,7 @@
 
         points.push(x, y);
     }
+
     return points;
 };
 
@@ -836,7 +837,7 @@
  * Builds a polygon to draw
  *
  * @private
- * @param graphicsData {Graphics} The graphics object containing all the necessary properties
+ * @param graphicsData {WebGLGraphicsData} The graphics object containing all the necessary properties
  * @param webGLData {object} an object containing all the webGL-specific information to create this shape
  */
 GraphicsRenderer.prototype.buildPoly = function (graphicsData, webGLData)