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

[Tijmen Klein]

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
>
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