From 0ae6e172fa04121a79b3170f64566c951f772873 Mon Sep 17 00:00:00 2001
From: Andrei Mihailov <and.mikhaylov@gmail.com>
Date: Sun, 12 Apr 2015 20:57:52 +0200
Subject: [PATCH] Fix invalid pixelRatio when using filters

---
 src/Node.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Node.js b/src/Node.js
index b7caee38..f71a51b5 100644
--- a/src/Node.js
+++ b/src/Node.js
@@ -333,11 +333,14 @@
 
             if (filters) {
                 if (!this._filterUpToDate) {
+                    var ratio = sceneCanvas.pixelRatio;
+                    
                     try {
                         len = filters.length;
                         filterContext.clear();
+
                         // copy cached canvas onto filter context
-                        filterContext.drawImage(sceneCanvas._canvas, 0, 0);
+                        filterContext.drawImage(sceneCanvas._canvas, 0, 0, sceneCanvas.getWidth() / ratio, sceneCanvas.getHeight() / ratio);
                         imageData = filterContext.getImageData(0, 0, filterCanvas.getWidth(), filterCanvas.getHeight());
 
                         // apply filters to filter context