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<p>Yes I did. but does not work. The same results.</p>
<p> </p>
<p>Thx,</p>
<p>Manole Buican</p>
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<div id="divRpF524031" style="DIRECTION: ltr"><font color="#000000" size="2" face="Tahoma"><b>From:</b> Joachim Pouderoux [joachim.pouderoux@kitware.com]<br>
<b>Sent:</b> Wednesday, July 22, 2015 6:08 PM<br>
<b>To:</b> Manole Buican<br>
<b>Cc:</b> vtk-developers@vtk.org<br>
<b>Subject:</b> Re: [vtk-developers] PNG problem<br>
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<div dir="ltr">Can you try to add <span>windowToImageFilter->ReadFrontBufferOff(); before calling Update()?
</span></div>
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<div dir="ltr"><b>Joachim Pouderoux</b><br>
<blockquote style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<font size="1"><i>PhD, Technical Expert</i></font><br>
<b><font size="1"><a href="http://www.kitware.fr" target="_blank">Kitware SAS</a></font></b><br>
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<div class="gmail_quote">2015-07-22 17:07 GMT+02:00 Manole Buican <span dir="ltr">
<<a href="mailto:manole.buican@terrasigna.com" target="_blank">manole.buican@terrasigna.com</a>></span>:<br>
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<p>Hi Joachim</p>
<p> </p>
<p>It's a valid white file.</p>
<p> </p>
<p>Manole</p>
<p> </p>
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<div style="DIRECTION: ltr"><font color="#000000" size="2" face="Tahoma"><b>From:</b> Joachim Pouderoux [<a href="mailto:joachim.pouderoux@kitware.com" target="_blank">joachim.pouderoux@kitware.com</a>]<br>
<b>Sent:</b> Wednesday, July 22, 2015 6:05 PM<br>
<b>To:</b> Manole Buican<br>
<b>Cc:</b> <a href="mailto:vtk-developers@vtk.org" target="_blank">vtk-developers@vtk.org</a><br>
<b>Subject:</b> Re: [vtk-developers] PNG problem<br>
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<div>Hi Manole,<br>
<br>
Is the the 2KB PNG file valid and defines an empty/all black image ?<br>
<br>
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Joachim<br>
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<div dir="ltr"><b>Joachim Pouderoux</b><br>
<blockquote style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<font size="1"><i>PhD, Technical Expert</i></font><br>
<b><font size="1"><a href="http://www.kitware.fr" target="_blank">Kitware SAS</a></font></b><br>
</blockquote>
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<div class="gmail_quote">2015-07-22 16:47 GMT+02:00 Manole Buican <span dir="ltr">
<<a href="mailto:manole.buican@terrasigna.com" target="_blank">manole.buican@terrasigna.com</a>></span>:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
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Hi all, <br>
<br>
<span>Code like </span><br>
<br>
<span>void DlgResVis2D::saveTmpPicture(QString &filename) </span><br>
<span>{ </span><br>
<span> vtkNew<vtkWindowToImageFilter> windowToImageFilter; </span><br>
<span> vtkWindow* pRenderWindow = (vtkWindow *) m_pView->GetRenderWindow();
</span><br>
<br>
<span> windowToImageFilter->SetInput(pRenderWindow); </span><br>
<span> windowToImageFilter->SetMagnification(1); </span><br>
<span> windowToImageFilter->SetInputBufferTypeToRGBA(); </span><br>
<span> windowToImageFilter->Update(); </span><br>
<br>
<span> vtkSmartPointer <vtkPNGWriter> writer = vtkSmartPointer <vtkPNGWriter>::New();
</span><br>
<span> writer->SetFileName(filename.<span>toAscii</span>()); </span><br>
<span> writer->SetInputConnection(windowToImageFilter->GetOutputPort()); </span>
<br>
<span> writer->Write(); </span><br>
<span>} </span><br>
<br>
<span><span>exports</span> a picture in <span>PNG</span> on 5 computers. On the sixth computer produce only a 2KB empty
<span>PNG</span> file (no error is prompted), while on each other 5 computers produce 35KB
<span>PNG</span> file with the same <span>image</span>. </span><br>
<span>Does anybody encounter the same behavior? </span><br>
<br>
<span>Thx in advance, </span><br>
<span>Manole Buican </span><br>
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