[vtkusers] Using QVTKWidget with QT5 on Linux

[Pavel Kalinnikov]

Here I found a thread with the same problem described:
http://public.kitware.com/pipermail/vtkusers/2014-October/085407.html
But no solution was offered in this thread. I believe there is clearly a
bug somewhere. Does anyone can reproduce this situation and try to resolve
it?

Thank you

2015-05-08 14:14 GMT+03:00 Pavel Kalinnikov <pavelkalinnikov at gmail.com>:

> * replace QVTKWidget by QVTKWidget2, sorry for the typo
>
> 2015-05-08 11:51 GMT+03:00 Pavel Kalinnikov <pavelkalinnikov at gmail.com>:
>
>> I tried to make all steps of "VTK calls" section, but it doesn't help. Do
>> I really need depth peeling? The scene doesn't have any translucency, just
>> an opaque sphere and a pyramid.
>>
>> Besides, if I replace QVTKWidget by QVTKWidget, everything works just
>> fine.
>>
>> 2015-05-08 6:55 GMT+03:00 Sankhesh Jhaveri <sankhesh.jhaveri at kitware.com>
>> :
>>
>>> Yep. It seems like depth peeling is OFF. You will have to turn depth
>>> peeling ON explicitly on the VTK render window.
>>>
>>> http://www.vtk.org/Wiki/VTK/Depth_Peeling
>>>
>>>
>>>
>>>
>>> Warm Regards,
>>>
>>> Sankhesh Jhaveri
>>> Research & Development Engineer
>>> Kitware, Inc.
>>> *Phone*: (518) 881 4417
>>> *Fax*: (518) 371 4573
>>>
>>>
>>>
>>> On Wed, May 6, 2015 at 4:57 PM, Pavel Kalinnikov <
>>> pavelkalinnikov at gmail.com> wrote:
>>>
>>>> Here is the screenshot of working example from Examples/GUI/Qt/Events.
>>>>
>>>> One more thing I forgot to say - VTK works good on my Linux (when not
>>>> using QVTKWidget).
>>>>
>>>> 2015-05-06 23:45 GMT+03:00 David E DeMarle <dave.demarle at kitware.com>:
>>>>
>>>>> If you can share the right/wrong images, that would help diagnose the
>>>>> cause.
>>>>>
>>>>> Is there opacity in the scene? If so depth peeling is needed to render
>>>>> the faces in the right order. To do depth peeling we need to ask the GPU
>>>>> what it can do and that can get messed up with different paths to the
>>>>> graphics context layers (under Qt vs natively for example.)
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> David E DeMarle
>>>>> Kitware, Inc.
>>>>> R&D Engineer
>>>>> 21 Corporate Drive
>>>>> Clifton Park, NY 12065-8662
>>>>> Phone: 518-881-4909
>>>>>
>>>>> On Wed, May 6, 2015 at 4:31 PM, Pavel Kalinnikov <
>>>>> pavelkalinnikov at gmail.com> wrote:
>>>>>
>>>>>> Hi everyone!
>>>>>>
>>>>>> I have the following environment:
>>>>>>  * OS - x64 Ubuntu 12.04.5 LTS
>>>>>>  * Qt 5.4
>>>>>>  * VTK 6.2.0
>>>>>>
>>>>>> I'm trying to use QVTKWidget and it seems like it doesn't work
>>>>>> properly. When I try to render some 3d object in this widget, I see that
>>>>>> faces get rendered in a wrong order (maybe there are some problems with
>>>>>> z-buffer or something).
>>>>>> The same code built on Windows works perfectly.
>>>>>>
>>>>>> Also I tried to build and run the standard example
>>>>>> Examples/GUI/Qt/Events distributed along with VTK-6.2.0, and it has the
>>>>>> same problem in my Linux environment. And again, it works on Windows.
>>>>>>
>>>>>> Am I doing something wrong or is it a bug?
>>>>>> Is there anyone who can fix this?
>>>>>> Is there any known workaround for this case?
>>>>>>
>>>>>> Thank you,
>>>>>> Pavel Kalinnikov
>>>>>>
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>>>>>>
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>>>>>>
>>>>>> Please keep messages on-topic and check the VTK FAQ at:
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>>>>>>
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>>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> Powered by www.kitware.com
>>>>
>>>> Visit other Kitware open-source projects at
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>>>>
>>>> Please keep messages on-topic and check the VTK FAQ at:
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>>>>
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>>>>
>>>
>>
>
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