<div dir="ltr">MR up: <a href="https://gitlab.kitware.com/vtk/vtk/merge_requests/1863">https://gitlab.kitware.com/vtk/vtk/merge_requests/1863</a></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Aug 22, 2016 at 10:59 AM, David Lonie <span dir="ltr"><<a href="mailto:david.lonie@kitware.com" target="_blank">david.lonie@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Good catch -- looks like a slip up because VTK's APIs are unconventional (GetSize() returns capacity, not number of elements as one would expect). I'll make a merge request for this.<div><br></div><div>Thanks!</div><div>Dave</div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Mon, Aug 22, 2016 at 5:42 AM, Pavel Krebs/AMBERG <span dir="ltr"><<a href="mailto:pkrebs@amberg.cz" target="_blank">pkrebs@amberg.cz</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><font size="2" face="sans-serif">Hi all,</font>
<br><font size="2" face="sans-serif">during moving from vtk 6.2 to vtk 7
(with enabled OpenGL2 backend rendering) we found serious bug in vtkDepthSortPolyData
filter. There is a problem with generating of output vtkPolyData object.
There are usage of wrong sizes for vtkCellArray for Vert, Lines, Polys,...
Instead of real size the allocated size is used. Later in the rendering
request uninitialised cell ids are used and rendering can crash.</font>
<br><font size="2" face="sans-serif">I changed the code like this and it
works now. Should be good to fix it also in VTK7 source code repository.</font>
<br>
<br><font size="1" face="}">int vtkDepthSortPolyData::RequestD<wbr>ata(</font>
<br><font size="1" face="}"> vtkInformation *vtkNotUsed(request),</font>
<br><font size="1" face="}"> vtkInformationVector **inputVector,</font>
<br><font size="1" face="}"> vtkInformationVector *outputVector)</font>
<br><font size="1" face="}">{</font>
<br><font size="1" face="}">.</font>
<br><font size="1" face="}">.</font>
<br><font size="1" face="}">.</font>
<br><font size="1" face="}"> vtkIdType *pOutputPolys = NULL;</font>
<br><font size="1" face="}"> if (nPolys)</font>
<br><font size="1" face="}"> {</font>
<br><font size="1" face="}"> vtkCellArray *outputPolyCells
= vtkCellArray::New();</font>
<br><font size="1" face="}"> outputPolyCells->SetNumberOfCe<wbr>lls(nPolys);</font>
<br><font size="1" face="}"> output->SetPolys(outputPolyCel<wbr>ls);</font>
<br><font size="1" face="}"> outputPolyCells->Delete();</font>
<br><font size="1" face="}"> vtkIdTypeArray *outputPolys
= outputPolyCells->GetData();</font>
<br><font size="1" face="}">- outputPolys->SetNumberOfTuple<wbr>s(input->GetPolys()->GetSize()<wbr>);</font>
<br><font size="1" face="}">+ outputPolys->SetNumberOfTuple<wbr>s(input->GetPolys()->GetNumber<wbr>OfConnectivityEntries());</font>
<br><font size="1" face="}"> pOutputPolys = outputPolys->GetPointer(0);</font>
<br><font size="1" face="}"> }</font>
<br><font size="2" face="sans-serif">.</font>
<br><font size="2" face="sans-serif">.</font>
<br><font size="2" face="sans-serif">.</font>
<br><font size="2" face="sans-serif">}</font>
<br>
<br><font size="2" face="sans-serif">Kind regards</font>
<br><font size="2" face="sans-serif"> </font>
<br><font size="2" face="sans-serif">Pavel Krebs</font>
<br><font size="2" face="sans-serif">Software Engineer</font>
<br>
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