[vtk-developers] PNG problem

[Manole Buican]

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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