public AsStarling(AsClass rootClass, bc.flash.display.AsStage stage, AsRectangle viewPort, AsStage3D stage3D, String renderMode, String profile)
 {
     if(stage == null)
     {
         throw new AsArgumentError("Stage must not be null");
     }
     if(rootClass == null)
     {
         throw new AsArgumentError("Root class must not be null");
     }
     if(viewPort == null)
     {
         viewPort = new AsRectangle(0, 0, stage.getStageWidth(), stage.getStageHeight());
     }
     if(stage3D == null)
     {
         stage3D = stage.getStage3Ds()[0];
     }
     makeCurrent();
     mRootClass = rootClass;
     mViewPort = viewPort;
     mStage3D = stage3D;
     mStage = new AsStage(viewPort.width, viewPort.height, stage.getColor());
     mNativeOverlay = new AsSprite();
     mNativeStage = stage;
     mNativeStage.addChild(mNativeOverlay);
     mTouchProcessor = new AsTouchProcessor(mStage);
     mJuggler = new AsJuggler();
     mAntiAliasing = 0;
     mSimulateMultitouch = false;
     mEnableErrorChecking = false;
     mLastFrameTimestamp = AsGlobal.getTimer() / 1000.0f;
     mPrograms = new AsDictionary();
     mCustomData = new AsDictionary();
     mSupport = new AsRenderSupport();
     AsArray __touchEventTypes_ = getTouchEventTypes();
     if (__touchEventTypes_ != null)
     {
         foreach (String touchEventType in __touchEventTypes_)
         {
             stage.addEventListener(touchEventType, onTouch, false, 0, true);
         }
     }
     stage.addEventListener(AsEvent.ENTER_FRAME, onEnterFrame, false, 0, true);
     stage.addEventListener(AsKeyboardEvent.KEY_DOWN, onKey, false, 0, true);
     stage.addEventListener(AsKeyboardEvent.KEY_UP, onKey, false, 0, true);
     stage.addEventListener(AsEvent.RESIZE, onResize, false, 0, true);
     if(mStage3D.getContext3D() != null && mStage3D.getContext3D().getDriverInfo() != "Disposed")
     {
         mShareContext = true;
         AsGlobal.setTimeout(initialize, 1);
     }
     else
     {
         mShareContext = false;
         mStage3D.addEventListener(AsEvent.CONTEXT3D_CREATE, onContextCreated, false, 1, true);
         mStage3D.addEventListener(AsErrorEvent.ERROR, onStage3DError, false, 1, true);
         try
         {
             mStage3D.requestContext3D(renderMode);
         }
         catch (AsError e)
         {
             showFatalError("Context3D error: " + e.message);
         }
     }
 }