[vtkusers] QVTK Widget GPU Rendering

[Dženan Zukić]

If I remember correctly, VTK's GPU rendering works best with nVidia cards.

Use GPUVolumeRayCastMapper and not SmartVolumeMapper.
http://www.vtk.org/doc/nightly/html/classvtkGPUVolumeRayCastMapper.html


On Thu, Mar 7, 2013 at 7:40 AM, Obadiah <ob1.owk at gmail.com> wrote:

> Hi everyone.
>
> Is there any way to force GPU rendering for QVTK Widget? I have a polygon
> mesh that I am visualising and it doesn't appear to be using the graphics
> card.
>
> I'm running an instance of PCL Visualizer under QVTK on two machines: one
> is Ubuntu 11.10 with onboard graphics and the other is Ubuntu 12.04 with an
> nVidia GTX680M. The second machine has much better specs and is faster in
> every other aspect except when I try to add the polygonmeshes to the
> visualizer and render. The machine with the onboard graphics is actually
> slightly faster rendering.
>
> Could there be some incompatibility with the nVidia graphics card?
>
> Cheers
> Obi
>
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