[vtkusers] vtkTextActor segfaults my render window

[Bill Lorensen]

What traceback do you get with David's example?

On Wed, Dec 9, 2009 at 4:29 PM, Jérôme <jerome.velut at gmail.com> wrote:
> Continuing my investigation. It seems I am alone with that problem.
> David Doria kindly put an example of a use-case of vtkTextActor on the wiki:
> http://www.cmake.org/Wiki/Display_text
>
> I confirm my segfault with that code, only when linking to VTK built in
> release. It does not make difference if my code is complied Debug or
> Release.
>
> Here is the gdb backtrace:
> (gdb) bt
> #0  0x005f7a72 in vtk_freetype_FTC_CMapCache_Lookup ()
>    from /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkfreetype.so.pv3.7
> #1  0x009830bc in vtkFreeTypeUtilities::GetGlyphIndex(unsigned long, char,
> unsigned int*) ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #2  0x00987b50 in vtkFreeTypeUtilities::GetBoundingBox(vtkTextProperty*,
> char const*, int*) ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #3  0x009883dd in vtkFreeTypeUtilities::PrepareImageData(vtkImageData*,
> vtkTextProperty*, char const*, int*, int*) ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #4  0x009888fe in vtkFreeTypeUtilities::RenderString(vtkTextProperty*, char
> const*, vtkImageData*) ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #5  0x00946e3e in vtkTextActor::RenderOpaqueGeometry(vtkViewport*) ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #6  0x008f87a6 in vtkRenderer::UpdateGeometry() ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #7  0x009cf547 in vtkOpenGLRenderer::DeviceRender() ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #8  0x008f91fb in vtkRenderer::Render() ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #9  0x008f4b7b in vtkRendererCollection::Render() ()
> ---Type <return> to continue, or q <return> to quit---
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #10 0x0090789f in vtkRenderWindow::DoStereoRender() ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #11 0x00907c80 in vtkRenderWindow::DoFDRender() ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #12 0x009090ab in vtkRenderWindow::DoAARender() ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #13 0x00907dc5 in vtkRenderWindow::Render() ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #14 0x00a0d184 in vtkXOpenGLRenderWindow::Render() ()
>    from
> /home/dje/Softwares/ParaView-3.7/Release/bin/libvtkRendering.so.pv3.7
> #15 0x08049c1b in main () at /home/dje/Codes/TestFilter/DrawText.cxx:50
>
>
> For now, I am working with ParaView/VTK in Debug built. But I hope someone
> will explain me what is the trouble with my release builds.
>
> Jerome
>
> 2009/12/9 Jérôme <jerome.velut at gmail.com>
>>
>> I just compiled ParaView/VTK in Debug mode, the problem disappears... So I
>> can be more precise about the reproducibility check:
>>  Could you tell me if you have a segfault with really simple script in a
>> linux (F12) release built?
>>
>> Thanks again,
>> Jerome
>>
>> 2009/12/8 Jérôme <jerome.velut at gmail.com>
>>>
>>> Dear all,
>>> It seems that I misused the vtkTextActor for a while: a recent CVS
>>> checkout makes a simple vtkTextActor rendering crashing by seg fault. I
>>> noted this error inside a ParaView cxx plugin, but now I have isolated the
>>> cause: A vtkTextActor added to the renderer yields the crash.
>>>
>>> Please, find attach a python script that reproduces the bug (by me, at
>>> least... my settings may be guilty). Could you tell me if you have such an
>>> error, and if my way of using text actor is wrong?
>>>
>>> Thanks a lot!
>>>
>>> Jerome
>>
>
>
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