<div>HI Lisa,</div>
<div> </div>
<div>I looked up what I had posted:</div>
<div> </div>
<div> <a href="http://public.kitware.com/pipermail/vtkusers/2005-August/081366.html">http://public.kitware.com/pipermail/vtkusers/2005-August/081366.html</a></div>
<div> </div>
<div>you're right, it had nothing to do with the window to image filter, but something with </div>
<div>capturing an offscreen rendering context for a print operation. It was so long ago, </div>
<div>maybe this is more related to what you're trying to do though anyways Jesse, </div>
<div> </div>
<div>Mark<br><br> </div>
<div><span class="gmail_quote">On 10/19/05, <b class="gmail_sendername">Lisa Avila</b> <<a href="mailto:lisa.avila@kitware.com">lisa.avila@kitware.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Mark,<br><br>vtkWindowToImageFilter is not offscreen rendering so this is not the same problem unless the render window you were using was offscreen. I am not sure why you should have a problem with vtkWindowToImageFilter - you may need to change whether you read from the front or back buffer depending on your exact rendering parameters (and perhaps even your graphics driver) but it should work....
<br><span class="sg"><br>Lisa</span>
<div><span class="e" id="q_10709c564f3d1c31_2"><br><br><br>At 02:15 PM 10/18/2005, Mark Wyszomierski wrote:<br>
<blockquote cite="http://" type="cite">I believe I ran into the a similar problem before, I wanted to<br>save what was currently being rendered to screen to an<br>image file using vtkWindowToimageFilter. This did not work
<br>with the 3d texture volume mapper, but it did for the rest of the<br>volume renderers. I had to write some code to extract the pixel data<br>left in the screen buffer, and this worked ok. Sorry I can't be <br>more specific, this was about 2 months ago, but I posted a
<br>better explanation of what I did to the mailing list at that point, <br>it should still be in the archives. Hopefully this can give you <br>some ideas if the general problems are the same,<br> <br>Mark<br><br> <br>On 10/18/05,
<b>Lisa Avila</b> <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:lisa.avila@kitware.com" target="_blank">lisa.avila@kitware.com</a> > wrote: <br>
<dl><br>
<dd>Hi Jesse,<br><br>
<dd>The offscreen context probably does not support the extension necessary to<br>
<dd>do the 3D texture mapping (this is typical). I am not sure if there is a <br>
<dd>way around it - hopefully drivers will support it in the future.<br><br>
<dd>Lisa<br><br><br><br>
<dd>At 04:29 PM 10/11/2005, Jesse Corrington wrote:<br>
<dd>>I just switched to using 3d texture mapping for volumes, and now i am<br>
<dd>>unable to do offscreen rendering, but the onscreen works very well. Is it<br>
<dd>>possible to have offscreen rendering using 3d texture mapping.<br>
<dd>><br>
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