[vtkusers] VTK with two graphics card

[David E DeMarle]

Does it work if you configure VTK with VTK_USE_64BIT_IDS set to ON?

That changes the size of vtkIdType and it may just work then.


David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909


On Sun, Nov 17, 2013 at 12:32 PM, Frank Gao <Frank.Gao at guidemia.com> wrote:

> Hi Aashish,
>
>
>
> Thanks for your reply. I figured out the problem. It’s not the two card
> problem. The code to acquire the dedicated graphics card memory returns a
> large negative value, so the rendering code just returns.
>
>
>
> The amount of memory is declared as vtkIdType, which is integer. So I
> guessed two possibilities: the D3D code to return memory is run, or a long
> integer is converted to an integer and resulted in a negative value.
>
>
>
> We should upgrade to newer version soon. The GPU ray cast mapper returns
> 128MB if it cannot determine the graphics card memory size, which is too
> small nowadays.
>
>
>
> Best regards,
>
> Frank
>
>
>
> *From:* vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] *On
> Behalf Of *Aashish Chaudhary
> *Sent:* Sunday, November 17, 2013 8:58 AM
> *To:* Frank Gao
> *Cc:* vtkusers
> *Subject:* Re: [vtkusers] VTK with two graphics card
>
>
>
> Frank,
>
>
>
> Can you try the newer version of VTK (However, I am not sure if that will
> change this behavior).
>
>
>
> This is Mac 10.8?
>
>
>
> - Aashish
>
>
>
> On Sun, Nov 17, 2013 at 1:31 AM, Frank Gao <Frank.Gao at guidemia.com> wrote:
>
> Hello All,
>
> There was a post last year related volume rendering with a system with two
> graphics card (Posted by Ian Lindsay).
> http://marc.info/?l=vtkusers&m=133059379506480. Here again:
>
> Many laptops have two graphics cards Intel HD and nVidia for example. I am
> trying to do volume rendering. The LoadExtension call returns true, and I
> went through the code, the system identified the nVidia card, all the
> extensions are good. However, when the volume rendering is actually done,
> obviously it goes to the HD card. Nothing is rendered.
>
> This basically make the nVidia card useless. Please note it does not help
> if I set the program to run with the high end card, and the HD card cannot
> be disabled either.
>
> Can somebody please help? By the way I am still using V5.4.
>
> Your reply is highly appreciated.
>
> Best regards,
> Frank Gao
>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
>
>
>
>
>
> --
> | Aashish Chaudhary
> | R&D Engineer
> | Kitware Inc.
> | www.kitware.com
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20131126/68fcc92b/attachment.htm>