[vtk-developers] VTK and transparency problems

[Ken Martin]

> Actually the Sandia folks were just talking about this today. :)
> 
> I'm assuming the cull face trick will avoid a z-sort of the polygons for
> cylindrical, spherical, tubular geometries by making sure that back
> faces (which tend to be 'farther' back in the scene) get rendered first
> and then front faces (which tend to be 'closer' get rendered over the
> back faces). Is that the jist?

Yes, that is the gist. You still need to roughly sort actors and it will
produce incorrect results for concave actors or multiple actors that
mutually overlap, but those problems are already in VTK and this would solve
the rest of them. 

> Also I second putting this into VTK as default, or at least into
> ParaView 2.4. :)

Cool.

Ken