[vtk-developers] PNG problem
Manole Buican
manole.buican at terrasigna.com
Fri Jul 24 03:44:33 EDT 2015
Hi Joachim,
I tried what you suggested, but.. the same results. The system involved is a machine with Genuine Intel (R) CPU, U7300 @ 1.3 GHz, RAM 4 GB, Win 7, 64 bits and Mobile Intel(R) 4 Series Express Chipset Family video card.
Thx,
Manole
________________________________
From: Joachim Pouderoux [joachim.pouderoux at kitware.com]
Sent: Wednesday, July 22, 2015 6:08 PM
To: Manole Buican
Cc: vtk-developers at vtk.org
Subject: Re: [vtk-developers] PNG problem
Can you try to add windowToImageFilter->ReadFrontBufferOff(); before calling Update()?
Joachim Pouderoux
PhD, Technical Expert
Kitware SAS<http://www.kitware.fr>
2015-07-22 17:07 GMT+02:00 Manole Buican <manole.buican at terrasigna.com<mailto:manole.buican at terrasigna.com>>:
Hi Joachim
It's a valid white file.
Manole
________________________________
From: Joachim Pouderoux [joachim.pouderoux at kitware.com<mailto:joachim.pouderoux at kitware.com>]
Sent: Wednesday, July 22, 2015 6:05 PM
To: Manole Buican
Cc: vtk-developers at vtk.org<mailto:vtk-developers at vtk.org>
Subject: Re: [vtk-developers] PNG problem
Hi Manole,
Is the the 2KB PNG file valid and defines an empty/all black image ?
Joachim
Joachim Pouderoux
PhD, Technical Expert
Kitware SAS<http://www.kitware.fr>
2015-07-22 16:47 GMT+02:00 Manole Buican <manole.buican at terrasigna.com<mailto:manole.buican at terrasigna.com>>:
Hi all,
Code like
void DlgResVis2D::saveTmpPicture(QString &filename)
{
vtkNew<vtkWindowToImageFilter> windowToImageFilter;
vtkWindow* pRenderWindow = (vtkWindow *) m_pView->GetRenderWindow();
windowToImageFilter->SetInput(pRenderWindow);
windowToImageFilter->SetMagnification(1);
windowToImageFilter->SetInputBufferTypeToRGBA();
windowToImageFilter->Update();
vtkSmartPointer <vtkPNGWriter> writer = vtkSmartPointer <vtkPNGWriter>::New();
writer->SetFileName(filename.toAscii());
writer->SetInputConnection(windowToImageFilter->GetOutputPort());
writer->Write();
}
exports a picture in PNG on 5 computers. On the sixth computer produce only a 2KB empty PNG file (no error is prompted), while on each other 5 computers produce 35KB PNG file with the same image.
Does anybody encounter the same behavior?
Thx in advance,
Manole Buican
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