diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 08a45b6..9b51961 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -32,14 +32,6 @@
     // know about sprites!
     this.quad = new Quad(this.gl, renderer.state.attribState);
 
-    var rootState = new FilterState();
-    rootState.sourceFrame = rootState.destinationFrame = this.renderer.rootRenderTarget.size;
-    rootState.renderTarget = renderer.rootRenderTarget;
-
-    this.stack = [rootState];
-
-    this.stackIndex = 0;
-
     this.shaderCache = {};
     // todo add default!
     this.pool = {};
@@ -53,11 +45,28 @@
 {
     var renderer = this.renderer;
 
+    var filterData = this.renderer._activeRenderTarget.filterStack;
+
+    if(!filterData)
+    {
+        // add new stack
+        var filterState = new FilterState();
+        filterState.sourceFrame = filterState.destinationFrame = this.renderer._activeRenderTarget.size;
+        filterState.renderTarget = renderer._activeRenderTarget;
+
+        this.renderer._activeRenderTarget.filterData = filterData = {
+            index:0,
+            stack:[filterState]
+        };
+    }
+
+    this.filterData = filterData;
+
     // get the current filter state..
-    var currentState = this.stack[++this.stackIndex];
+    var currentState = filterData.stack[++filterData.index];
     if(!currentState)
     {
-        currentState = this.stack[this.stackIndex] = new FilterState();
+        currentState = filterData.stack[filterData.index] = new FilterState();
     }
 
     // for now we go off the filter of the first resolution..
@@ -73,7 +82,7 @@
     sourceFrame.width = (((targetBounds.width + padding*2) * resolution) | 0) / resolution;
     sourceFrame.height = (((targetBounds.height + padding*2)* resolution) | 0) / resolution;
 
-    sourceFrame.fit(this.stack[0].destinationFrame);
+    sourceFrame.fit(filterData.stack[0].destinationFrame);
 
     destinationFrame.width = sourceFrame.width;
     destinationFrame.height = sourceFrame.height;
@@ -97,8 +106,10 @@
 
 FilterManager.prototype.popFilter = function()
 {
-    var lastState = this.stack[this.stackIndex-1];
-    var currentState = this.stack[this.stackIndex];
+    var filterData = this.filterData;
+
+    var lastState = filterData.stack[filterData.index-1];
+    var currentState = filterData.stack[filterData.index];
 
     this.quad.map(currentState.renderTarget.size, currentState.sourceFrame).upload();
 
@@ -130,7 +141,7 @@
         this.freePotRenderTarget(flop);
     }
 
-    this.stackIndex--;
+    filterData.index--;
 };
 
 FilterManager.prototype.applyFilter = function (filter, input, output, clear)
@@ -202,7 +213,7 @@
 
     if(shader.uniforms.data.filterArea)
     {
-        var currentState = this.stack[this.stackIndex];
+        var currentState = this.filterData.stack[this.filterData.index];
         var filterArea = shader.uniforms.filterArea;
 
         filterArea[0] = currentState.renderTarget.size.width;
@@ -268,7 +279,7 @@
 
 FilterManager.prototype.getRenderTarget = function()
 {
-    var currentState = this.stack[this.stackIndex];
+    var currentState = this.filterData.stack[this.filterData.index];
     var renderTarget = this.getPotRenderTarget(this.renderer.gl, currentState.sourceFrame.width, currentState.sourceFrame.height, currentState.resolution);
     renderTarget.setFrame(currentState.destinationFrame, currentState.sourceFrame);
 
@@ -290,13 +301,13 @@
 // thia returns a matrix that will normalise map filter cords in the filter to screen space
 FilterManager.prototype.calculateScreenSpaceMatrix = function (outputMatrix)
 {
-    var currentState = this.stack[this.stackIndex];
+    var currentState = this.filterData.stack[this.filterData.index];
     return filterTransforms.calculateScreenSpaceMatrix(outputMatrix,  currentState.sourceFrame, currentState.renderTarget.size);
 };
 
 FilterManager.prototype.calculateNormalisedScreenSpaceMatrix = function (outputMatrix)
 {
-    var currentState = this.stack[this.stackIndex];
+    var currentState = this.filterData.stack[this.filterData.index];
 
 
 
@@ -306,7 +317,7 @@
 // this will map the filter coord so that a texture can be used based on the transform of a sprite
 FilterManager.prototype.calculateSpriteMatrix = function (outputMatrix, sprite)
 {
-    var currentState = this.stack[this.stackIndex];
+    var currentState = this.filterData.stack[this.filterData.index];
     return filterTransforms.calculateSpriteMatrix(outputMatrix, currentState.sourceFrame, currentState.renderTarget.size, sprite);
 };
 

diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 08a45b6..9b51961 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -32,14 +32,6 @@
     // know about sprites!
     this.quad = new Quad(this.gl, renderer.state.attribState);
 
-    var rootState = new FilterState();
-    rootState.sourceFrame = rootState.destinationFrame = this.renderer.rootRenderTarget.size;
-    rootState.renderTarget = renderer.rootRenderTarget;
-
-    this.stack = [rootState];
-
-    this.stackIndex = 0;
-
     this.shaderCache = {};
     // todo add default!
     this.pool = {};
@@ -53,11 +45,28 @@
 {
     var renderer = this.renderer;
 
+    var filterData = this.renderer._activeRenderTarget.filterStack;
+
+    if(!filterData)
+    {
+        // add new stack
+        var filterState = new FilterState();
+        filterState.sourceFrame = filterState.destinationFrame = this.renderer._activeRenderTarget.size;
+        filterState.renderTarget = renderer._activeRenderTarget;
+
+        this.renderer._activeRenderTarget.filterData = filterData = {
+            index:0,
+            stack:[filterState]
+        };
+    }
+
+    this.filterData = filterData;
+
     // get the current filter state..
-    var currentState = this.stack[++this.stackIndex];
+    var currentState = filterData.stack[++filterData.index];
     if(!currentState)
     {
-        currentState = this.stack[this.stackIndex] = new FilterState();
+        currentState = filterData.stack[filterData.index] = new FilterState();
     }
 
     // for now we go off the filter of the first resolution..
@@ -73,7 +82,7 @@
     sourceFrame.width = (((targetBounds.width + padding*2) * resolution) | 0) / resolution;
     sourceFrame.height = (((targetBounds.height + padding*2)* resolution) | 0) / resolution;
 
-    sourceFrame.fit(this.stack[0].destinationFrame);
+    sourceFrame.fit(filterData.stack[0].destinationFrame);
 
     destinationFrame.width = sourceFrame.width;
     destinationFrame.height = sourceFrame.height;
@@ -97,8 +106,10 @@
 
 FilterManager.prototype.popFilter = function()
 {
-    var lastState = this.stack[this.stackIndex-1];
-    var currentState = this.stack[this.stackIndex];
+    var filterData = this.filterData;
+
+    var lastState = filterData.stack[filterData.index-1];
+    var currentState = filterData.stack[filterData.index];
 
     this.quad.map(currentState.renderTarget.size, currentState.sourceFrame).upload();
 
@@ -130,7 +141,7 @@
         this.freePotRenderTarget(flop);
     }
 
-    this.stackIndex--;
+    filterData.index--;
 };
 
 FilterManager.prototype.applyFilter = function (filter, input, output, clear)
@@ -202,7 +213,7 @@
 
     if(shader.uniforms.data.filterArea)
     {
-        var currentState = this.stack[this.stackIndex];
+        var currentState = this.filterData.stack[this.filterData.index];
         var filterArea = shader.uniforms.filterArea;
 
         filterArea[0] = currentState.renderTarget.size.width;
@@ -268,7 +279,7 @@
 
 FilterManager.prototype.getRenderTarget = function()
 {
-    var currentState = this.stack[this.stackIndex];
+    var currentState = this.filterData.stack[this.filterData.index];
     var renderTarget = this.getPotRenderTarget(this.renderer.gl, currentState.sourceFrame.width, currentState.sourceFrame.height, currentState.resolution);
     renderTarget.setFrame(currentState.destinationFrame, currentState.sourceFrame);
 
@@ -290,13 +301,13 @@
 // thia returns a matrix that will normalise map filter cords in the filter to screen space
 FilterManager.prototype.calculateScreenSpaceMatrix = function (outputMatrix)
 {
-    var currentState = this.stack[this.stackIndex];
+    var currentState = this.filterData.stack[this.filterData.index];
     return filterTransforms.calculateScreenSpaceMatrix(outputMatrix,  currentState.sourceFrame, currentState.renderTarget.size);
 };
 
 FilterManager.prototype.calculateNormalisedScreenSpaceMatrix = function (outputMatrix)
 {
-    var currentState = this.stack[this.stackIndex];
+    var currentState = this.filterData.stack[this.filterData.index];
 
 
 
@@ -306,7 +317,7 @@
 // this will map the filter coord so that a texture can be used based on the transform of a sprite
 FilterManager.prototype.calculateSpriteMatrix = function (outputMatrix, sprite)
 {
-    var currentState = this.stack[this.stackIndex];
+    var currentState = this.filterData.stack[this.filterData.index];
     return filterTransforms.calculateSpriteMatrix(outputMatrix, currentState.sourceFrame, currentState.renderTarget.size, sprite);
 };
 
diff --git a/src/core/renderers/webgl/utils/RenderTarget.js b/src/core/renderers/webgl/utils/RenderTarget.js
index d8349cf..da22e25 100644
--- a/src/core/renderers/webgl/utils/RenderTarget.js
+++ b/src/core/renderers/webgl/utils/RenderTarget.js
@@ -113,14 +113,7 @@
      *
      * @member {object[]}
      */
-    this.filterStack = [
-        {
-            renderTarget:this,
-            filter:[],
-            bounds:this.size
-        }
-    ];
-
+    this.filterData = null;
 
     /**
      * The scale mode.