[vtkusers] "a vtkShader2 object is being deleted before ReleaseGraphicsResources() has been called." with vtkVolume->setMapper

[Aashish Chaudhary]

Hi Tijmen,

Thanks for the update. I looked into the code and found some issues. I
will get back to you on those once I have something concrete.

On other note, can you create a new vtkVolume when you switch mappers
? You would need to remove the out going vtkVolume from the renderer
though.

Best,


On Fri, Oct 7, 2011 at 8:41 AM, Tijmen Klein <T.R.Klein at student.rug.nl> wrote:
> A small update. Doing the volume->ReleaseGraphicsResources(renwin) call does
> in fact lead to an error: "PreRender end ERROR (x502) Invalid operation". So
> that's not much of a solution.
> Tijmen
>
> On Wed, Oct 5, 2011 at 4:43 PM, Aashish Chaudhary
> <aashish.chaudhary at kitware.com> wrote:
>>
>> No problem. Thanks for the information.
>>
>> On Wed, Oct 5, 2011 at 10:40 AM, Tijmen Klein <T.R.Klein at student.rug.nl>
>> wrote:
>> > Hi Aashish,
>> > Sorry for not mentioning this, but I am indeed using
>> > a vtkGPUVolumeRayCastMapper.
>> > Cheers,
>> > Tijmen
>> >
>> > On Wed, Oct 5, 2011 at 4:38 PM, Aashish Chaudhary
>> > <aashish.chaudhary at kitware.com> wrote:
>> >>
>> >> Hi Tijmen,
>> >>
>> >> On Wed, Oct 5, 2011 at 7:50 AM, Tijmen Klein <T.R.Klein at student.rug.nl>
>> >> wrote:
>> >> > I recently updated VTK from 5.6 to the 5.9 version from Git. Now when
>> >> > I
>> >> > close my application, I get this error repeated quite a few times: "a
>> >> > vtkShader2 object is being deleted before ReleaseGraphicsResources()
>> >> > has
>> >> > been called."
>> >> > After a while I found the origin of the this problem. I have a
>> >> > vtkVolume,
>> >> > and throughout the program the mapper of this vtkVolume is gets
>> >> > changed.
>> >> > So,
>> >> > every now and then I do a call vtkVolume->setMapper(someMapper);
>> >> > This used to work fine, and the (visual) results do still work.
>> >> > However,
>> >> > when I comment out the setMapper() lines, the errors do not occur
>> >> > when
>> >> > exiting. I was able to get rid of the errors by prepending the
>> >> > setMapper()
>> >> > call with a ReleaseGraphicsResources() call. So my code now looks
>> >> > something
>> >> > like this:
>> >> > volume->ReleaseGraphicsResources(renWin);
>> >> > volume->SetMapper(volumeMapper);
>> >> > Is this intended and expected behavior, or is it a bug?
>> >>
>> >> This seems like a bug.  What particular mapper are you using? Is it
>> >> vtkGPUVolumeRayCastMapper? I will have a look at it sometime today.
>> >>
>> >> Thanks,
>> >>
>> >>
>> >> > Cheers,
>> >> > Tijmen
>> >> > _______________________________________________
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>> >>
>> >>
>> >>
>> >> --
>> >> | Aashish Chaudhary
>> >> | R&D Engineer
>> >> | Kitware Inc.
>> >> | www.kitware.com
>> >
>> >
>>
>>
>>
>> --
>> | Aashish Chaudhary
>> | R&D Engineer
>> | Kitware Inc.
>> | www.kitware.com
>
>



-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com