[vtkusers] stereo rendering and ray casting broken

[John Clyne]

Hi,

Stereo rendering via active stereo (e.g. Crystal Eyes) with ray casting
does not seem to work (at least as of the April 24 nightly build). If I
use the vtkVolumeTextureMapper2D volume mapper everything works just
fine. But if I use  vtkVolumeRayCastMapper I just get a mono image.
Any ideas?

thanks - jc