[vtkusers] RenderWindow capture works with VolumeRayCastMapper but not VolumeTextureMapper3D?

[Lisa Avila]

The 3D texture mapper uses OpenGL extensions which are probably not 
supported in the offscreen (memory) rendering context.

Lisa


At 12:14 PM 8/18/2005, Mark Wyszomierski wrote:
>Hi all,
>
>I have been volume rendering with the VolumeTextureMapper3D class and
>the VolumeRayCastMapper class as well.
>
>When it comes to printing, and I'm using the VolumeRayCastMapper, I
>can capture from my render window the volume and printing is fine.
>
>If I am rendering using the VolumeTextureMapper3D however, the volume
>is never captured although all my other actors in the scene do appear
>in the print out. Is there anything special that needs to be done when
>using VolumeTextureMapper3D? I capture like this:
>
>void OnPrint(CDC *pDC)
>{
>     RenderWindow->SetupMemoryRendering(200,200, pDC->GetSafeHdc());
>     RenderWindow->Render();
>     HDC hdcMem = RenderWindow->GetMemoryDC();
>     StretchBlt(pDC->GetSafeHdc(),0,0,400,400,hdcMem,0,0,200,200,SRCCOPY);
>     RenderWindow->ResumeScreenRendering();
>}
>
>Normal user interaction is fine for both methods, just when it comes
>to this print operation the texture mapper doesnt want to be captured!
>
>Thanks,
>Mark
>_______________________________________________
>This is the private VTK discussion list.
>Please keep messages on-topic. Check the FAQ at: 
>http://www.vtk.org/Wiki/VTK_FAQ
>Follow this link to subscribe/unsubscribe:
>http://www.vtk.org/mailman/listinfo/vtkusers