Merge pull request #4062 from sebavan/master

Ember JS Integration Support Fix

dist/preview release/what's new.md

@@ -133,6 +133,7 @@
 - Add onLoadObservable on VideoTexture - [#3845](https://github.com/BabylonJS/Babylon.js/issues/3845) ([sebavan](https://github.com/sebavan))
 - beforeRender is now triggered after the camera updated its state - [#3873](https://github.com/BabylonJS/Babylon.js/issues/3873) ([RaananW](https://github.com/RaananW))
 - Tools.DeepCopy no longer copying getter-only elements - [#3929](https://github.com/BabylonJS/Babylon.js/issues/3929) ([RaananW](https://github.com/RaananW))
+- Fix ember.js compatibility in ```PostProcessRenderEffect``` ([sebavan](https://github.com/sebavan))
 
 ## Breaking changes
 

src/PostProcess/RenderPipeline/babylon.postProcessRenderEffect.ts

@@ -43,9 +43,12 @@ module BABYLON {
          */
         public get isSupported(): boolean {
             for (var index in this._postProcesses) {
-                for(var ppIndex in this._postProcesses[index]){
-                    if (!this._postProcesses[index][ppIndex].isSupported) {
-                        return false;
+                if (this._postProcesses.hasOwnProperty(index)) {
+                    let pps = this._postProcesses[index];
+                    for(var ppIndex = 0; ppIndex < pps.length; ppIndex++){
+                        if (!pps[ppIndex].isSupported) {
+                            return false;
+                        }
                     }
                 }
             }