[vtkusers] Questions related to multiple renderers and layers.

[Weiguang Guan]

Hi VTK-users,

If I use more than one renderer in a vtkRenderWindow, only one renderer 
displays its content, the rest are invisible (unless you specify a unique 
viewport for each of the renderers). How to make multiple renderers 
visible in the same render window? and let z-buffering determine their 
visibility?

Thanks,

Weiguang