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

[Tijmen Klein]

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
>
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