diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 62b3a44..aeb5db6 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -35,6 +35,8 @@
     this.shaderCache = {};
     // todo add default!
     this.pool = {};
+
+    this.filterData = null;
 }
 
 FilterManager.prototype = Object.create(WebGLManager.prototype);
@@ -264,7 +266,22 @@
         if(uniformData[i].type === 'sampler2D')
         {
             shader.uniforms[i] = textureCount;
-            this.renderer.bindTexture(uniforms[i].baseTexture, textureCount);
+
+            if(uniforms[i].baseTexture)
+            {
+                this.renderer.bindTexture(uniforms[i].baseTexture, textureCount);
+            }
+            else
+            {
+                // this is helpful as renderTargets can also be set.
+                // Although thinking about it, we could probably
+                // make the filter texture cache return a RenderTexture
+                // rather than a renderTarget
+                var gl = this.renderer.gl;
+                this.renderer._activeTextureLocation = gl.TEXTURE0 + textureCount
+                gl.activeTexture(gl.TEXTURE0 + textureCount );
+                uniforms[i].texture.bind();
+            }
 
             textureCount++;
         }
@@ -310,10 +327,10 @@
 };
 
 
-FilterManager.prototype.getRenderTarget = function()
+FilterManager.prototype.getRenderTarget = function(clear, resolution)
 {
     var currentState = this.filterData.stack[this.filterData.index];
-    var renderTarget = this.getPotRenderTarget(this.renderer.gl, currentState.sourceFrame.width, currentState.sourceFrame.height, currentState.resolution);
+    var renderTarget = this.getPotRenderTarget(this.renderer.gl, currentState.sourceFrame.width, currentState.sourceFrame.height, resolution || currentState.resolution);
     renderTarget.setFrame(currentState.destinationFrame, currentState.sourceFrame);
 
     return renderTarget;