title: is there a way to bring stage3d to front?
body: <p>i tried the hello example on the adobe site.</p>
  
  <p><a href="http://www.adobe.com/devnet/flashplayer/articles/hello-triangle.html" rel="nofollow">http://www.adobe.com/devnet/flashplayer/articles/hello-triangle.html</a></p>
  
  <p>it works, but the context3D seems work on the stage's background in the lowest level. if i draw anything it will cover the 3d context.</p>
  
  <p>i want to bring it to front or set it to a certain level. how can i do that?</p>
  
  <p>also i was told if use 2d api and 3d api together , it will lower the performance of 3d,is it truth?In my works ,i still need 2d api ,for example, drawing the textfield .</p>