[vtkusers] Adding a vtkTextActor during a EndPickEvent callback command hangs the renderer (Visual Studio 2012)

[ROUET, Jean Michel]

Thank you sonogi1979 for your feedback.
I also confirm that your proposed changes correct the crash/freeze on the vtkTextActor in my modified cone5.cxx example.

Shall we conclude that the GetTuple function is not called in the correct manner.
The GetTuple function is known to be 'dangerous' and not 'thread safe'. Are we encountering such a situation ?
If so, why don't we have problems with older compilers (VS2008 or VS2010)?


Best Regards,

--
JM

-----Original Message-----
From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf Of sonogi1979 at live.jp
Sent: 27 December 2012 12:14
To: vtkusers at vtk.org
Subject: Re: [vtkusers] Adding a vtkTextActor during a EndPickEvent callback command hangs the renderer (Visual Studio 2012)

Hi,

I found vtkTextActor freeze in the line 412 of vtkOpenGLPolyDataMapper2D.cxx. The program freezes in GetTuple function of vtkDataArrayTemplate.txx.

[vtkOpenGLPolyDataMapper2D.cxx]
396: for (j = 0; j < npts; j++)
397: {
...
412:   glTexCoord2dv(t->GetTuple(pts[j]));// freeze here
...
418: }

When GetTuple(vtkId) is replaced with GetTuple(vtkId, double*), the program works in VS2012 release without debugger.

[vtkOpenGLPolyDataMapper2D.cxx]
411:   {
412:     //glTexCoord2dv(t->GetTuple(pts[j])); // freeze in release without
debugger
   :     double txcoord_value[2];
   :     t->GetTuple(pts[j], txcoord_value);
   :     glTexCoord2dv(txcoor_value));
413:   }

Bests,
Shinya




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