[vtkusers] QVTKWidget rendering performance

[Dragan Vidovic]

Hi Christoph

Sorry for the duplicate report, I should have searched better. Yes, I
am using Qt5 under the current version of Ubuntu and some cheap NVidia
card (maybe GeForce 8400) with proprietary drivers. If necessary I can
be more precise in the morning when I get to work.

Did you try to see whether you will get the same behavior with Qt4?
Did you try the proposed patch?

Regards,

Dragan

On Wed, Mar 4, 2015 at 8:36 PM, Christoph Kolb
<c.kolb at dkfz-heidelberg.de> wrote:
> 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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>