[vtkusers] QVTKWidget rendering performance

Christoph Kolb c.kolb at dkfz-heidelberg.de
Wed Mar 4 14:36:46 EST 2015


Hi Dragan,

I'm assuming that you have used Qt5, because I have the same problem and 
posted it to the vtk-developers list:

http://markmail.org/message/l76z3mppijvpy6sn

May I ask which os you are using?

Regards
Christoph

On 03/04/2015 04:06 PM, Dragan Vidovic wrote:
> Hi
>
> I am writing a CAD program using VTK and Qt. I based it on the
> SimpleView example. When I rotate the view using the interactor the
> rendering is slow and lags behind the mouse movement. I am not posting
> any code here because this behavior is already apparent in the
> examples included with the distribution: if I start bin/SimpleView,
> press 't' to switch to the trackball mode, left click and rotate the
> scene around for a few seconds, when I stop it continues to move for a
> second or two before it stops. This does not happen with the examples
> not based on QVTKWidget, for instance with bin/SpecularSpheres. Is
> there a way to speed up the SimpleView example?
>
> I am using VTK-6.1.0 that I compiled myself under Ubuntu.
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