[VTK ARB] Thanks for participating

[Steve Pieper]

Thanks Will and everyone for the fun discussion.  I wasn't kidding (or
sucking up!) when I said these are some of my favorite topics.

Regarding the shaders, you probably saw my recent post to the developer
list on CommonGL idea  [1].  For current research I'm using the VTK OpenGL
backend with a few changes to expose shader-related classes to python just
for convenience.  I'm very interested to know how this should look in
OpenGL2, C++ or python in future VTK.

Particularly I want to be able to bind variables to uniforms, and map data
arrays to shader vertex attributes.   These are all nicely done in the
OpenGL but I don't see any support for them in OpenGL2.  I understood from
Berk yesterday that I'm supposed to write my own mapper subclass to support
those things?

Also I want to pass vtkImageData as 3D textures, which seem to only be
supported in the GPU ray caster in current VTK, but would be very handy as
a general feature.  Does anyone have plans for that?  Perhaps extending
vtkTexture to 3D?

Happy to have a follow on call if there's interest in these things.
Otherwise I can stumble along on my own ; )

-Steve



[1] http://public.kitware.com/pipermail/vtk-developers/2015-June/032147.html

On Thu, Jul 9, 2015 at 7:32 PM, Will Schroeder <will.schroeder at kitware.com>
wrote:

> Thanks to all who could participate today. I thought the discussions today
> were absolutely fantastic. I'd like to follow up with a couple of you
> separately:
>
> - Ken and Jim the large scale computing perspective is extremely helpful.
> I think it keeps us on the straight and narrow. Ken I'd appreciate it if
> you could occasionally update the ARB and eventually the VTK developers
> with VTK-m progress.
>
> - Bill please as you make progress on the remote modules ask for help and
> we'll do what we can. I'm sure there is some CMake magic that may need some
> special spells.
>
> - Steve: thanks for reminding us of the importance of going beyond the VTK
> graphics model to support shaders, etc. We've talked about this before and
> set it aside as the OpenGL2 work was being done. I think we are ready to
> face the challenge of building some programmable/extensible classes in VTK.
> Depending on how things go we may need to continue the conversation.
>
> - David G.: you briefly mentioned the need to address certain VTK
> interaction issues for medical computing. We didn't have time to fully
> explore this topic, can I call you in the next week or two to talk about
> your concerns?
>
> Please, if anything relative to the 6.3 release comes up, loop in Dave
> DeMarle as soon as possible.
>
> Thanks again,
> W
>
> --
> William J. Schroeder, PhD
> Kitware, Inc.
> 28 Corporate Drive
> Clifton Park, NY 12065
> will.schroeder at kitware.com
> http://www.kitware.com
> (518) 881-4902
>
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