[vtkusers] Combining volumes and transparent

[Lisa S. Avila]

Hello Jianlong,

I fixed this problem - it was the same one as with the VolumePro and the 
volume texture mapper. Let me know if you are still having problems with a 
current release.

Lisa


At 12:03 PM 9/13/2001, Jianlong Zhou wrote:
>Hi, all,
>I also have a problem as Jiro stated of actor not display transparent
>when adding volume. But I use vtkVolumeRayCastMapper. Does
>anyone know how to solve this problem? I use vtk3.2.
>Thank you in advance.
>
>Jianlong
>
> > Hello Jiro,
> >
> > Yes - the VolumePro mapper (and the volume texture mapper and volume ray
> > cast mapper) all were trashing the OpenGL state by disabling blending. I
> > fixed this and just checked it in. You can simply remove the 
> enable/disable
> > calls from vtkOpenGLVolumeProVG500Mapper if you don't want to update.
> >
> > Lisa
> >
> >
> >
> > At 11:28 AM 9/10/2001, Jiro Inoue wrote:
> > >Hi,
> > >I have multiple vtkActors and vtkVolumes set as inputs to a single
> > >vtkRenderer. I'm using volumepro 500 hardware with the vtkVolumeProMapper
> > >for my volumes and vtkPolyDataMapper for the actors. My problem is that my
> > >actors have transparency (opacity of 0.2), which works fine until I
> > >introduce a volume into the scene. As soon as the volume is placed in the
> > >scene, all of my actors become fully opaque - the volume on the other hand
> > >maintains the correct opacity characteristics.
> > >Has anybody else seen this? Any insights?
> > >
> > >Thanks,
> > >Jiro
> > >
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