[vtkusers] Requirements for multiple volumes in one render window

[Elvis Stansvik]

Hi,

>From searching around, I think I've gathered that to render multiple
volumes in a single window, each volume must have its own mapper and volume
property. They can't share mapper or property.

My question is whether I must use separate renderers for each volume as
well, or if I can use the same renderer for them all?

Also, I did read something in an old post about problems with rendering
multiple volumes that intersect (share a voxel). Is this still a problem?
I'm using VTK 6.2 and the vtkVolumeRayCastMapper.

Thanks in advance!

Elvis
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