How do I display the Stereo Interlace effect in the viewport when enabling stereocopy，  it displays red and blue images， but I want it to display interlace real time.   how do I  get it to display the effect I want? I need to have the thing playing real time，then I can wear my 3D glasses to watch it.
I figured it out，I need to click the top left "window" menu "set stereo system 3D" instead of the stereoscopy in the "output", it's working now