I confirm it is only happening with volume rendering and will add that the problem is not present when using vtkVolumeTextureMapper3D but only with vtkVolumeRayCastMapper.<br><br>I suspect the problem comes from vtkRayCastImageDisplayHelper, which is also used by vtkFixedPointVolumeRayCastMapper and vtkUnstructuredGridVolumeRayCastMapper. I haven't tried those 2, but if someone could confirm that they have the problem too, it would make it much easier to find the bug.<br>
<br>s.<br><br><div class="gmail_quote">On Wed, Apr 15, 2009 at 5:06 PM, Kevin H. Hobbs <span dir="ltr"><<a href="mailto:hobbsk@ohiou.edu">hobbsk@ohiou.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">On Thu, 2009-04-02 at 10:17 -0400, Simon Drouin wrote:<br>
</div><div><div></div><div class="h5">> Hi all,<br>
><br>
> Using vtkVolumeRaycastMapper for volume rendering in conjunction with<br>
> vtkRenderLargeImage with a magnification factor of 2 produces images<br>
> with a black column of pixels in the middle of the image. The same<br>
> scene rendered with vtkVolumeTextureMapper3D is perfectly fine. I get<br>
> the same result both on windows XP (MSVC 9) and OSX.<br>
><br>
> I suppose the problem is that vtkVolumeRaycastMapper doesn't render<br>
> the last (or the first) column of pixels, which doesn't show too much<br>
> when it is on the side of the window. When using vtkRenderLargeImage<br>
> with a magnification of 2, the last column of the first block ends up<br>
> in the center of the screen.<br>
><br>
> Has anyone tried to address this problem yet? I might dive into it if<br>
> I have time soon, though I'm a little bit affraid of the<br>
> vtkRaycastMapper code :-)<br>
><br>
> s.<br>
<br>
</div></div>Ah, the message is at:<br>
<br>
<a href="http://markmail.org/message/6syjeeln67uwx76e" target="_blank">http://markmail.org/message/6syjeeln67uwx76e</a><br>
<br>
and there is a bug report at:<br>
<br>
<a href="http://www.paraview.org/Bug/view.php?id=7858" target="_blank">http://www.paraview.org/Bug/view.php?id=7858</a><br>
</blockquote></div><br>