[vtkusers] vtkMultiVolume and shading

[Elvis Stansvik]

2018-04-24 15:15 GMT+02:00 Csaba Pinter <csaba.pinter at queensu.ca>:
> Hi Sankhesh,
>
>
>
> Thanks for the quick answer! Just in a nutshell, what would be needed to do
> programming-wise to add shading in the code?
>
>
>
> Also I’m wondering if the situation about funding applies to bugfixes as
> well? I am struggling with issues related to per-volume visibility and user
> transforms, and I think I’ll get back to you soon with self-contained test
> cases once I was able to figure out which of these are on the VTK side and
> how to reproduce them easily.

I'm also about to experiment with the multi-volume support. Would be
interesting to hear from you what problems you ran into wrt to
per-volume visibility / user transforms, so I know what to look out
for :) So if you file issues for those it would be great if you could
link to them here.

Cheers,
Elvis

>
>
>
> Thanks,
>
> csaba
>
>
>
> From: Sankhesh Jhaveri <sankhesh.jhaveri at kitware.com>
> Sent: Monday, April 23, 2018 21:15
> To: Csaba Pinter <csaba.pinter at queensu.ca>
> Cc: vtkusers at vtk.org
> Subject: Re: [vtkusers] vtkMultiVolume and shading
>
>
>
> Hi Csaba,
>
> I don’t believe there is a technical limitation. It was merely that the
> original effort for adding multiple overlapping volumes support was focused
> on selected features. I am not aware of current efforts/funding to add
> support for additional features like shading, different blend modes, etc.
>
> Thanks,
> Sankhesh
>
>
>
> On Mon, Apr 23, 2018 at 3:45 PM Csaba Pinter <csaba.pinter at queensu.ca>
> wrote:
>
> Hello,
>
>
>
> I’m experimenting with using vtkMultiVolume to add proper multi-volume
> rendering support into 3D Slicer. My main question is the reason behind this
> actor not supporting shading, as apparent when used, but also mentioned in
> the corresponding test:
>
> https://github.com/Kitware/VTK/blob/master/Rendering/Volume/Testing/Cxx/TestGPURayCastMultiVolumeOverlapping.cxx#L229
>
> Is this a technical limitation that would be very hard to overcome, or is it
> something simpler? I’m asking this because for this actor to be really used
> for volume rendering, shading would be necessary.
>
>
>
> Thank you,
>
> Csaba
>
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> --
>
> Sankhesh Jhaveri
>
> Sr. Research & Development Engineer | Kitware | (518) 881-4417
>
>
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