When I finished the 3D model render by using View.render(). And I just save this into a bitmap. And then I use the BitmapData.draw(), just like draw a DisplayObject, but it dose not work.
  Any ways to meet this requirement?
  Thanks in advance.

Hey, bizarrely enough, this is expected. Anything rendered by Stage3D has nothing to do with Flash’s regular display list, so BitmapData won’t “see” anything from Stage3D.

Stage3D does have a drawToBitmapData method, but I’m not sure how it is implemented in Away3D. Anyone…?