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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Sure, the factor 10 is not constant.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>In my case, I’m rendering 2 windows
with a 2Mb model in each.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Just one window rendered in 30ms, while
when adding one windows, the render time become 350ms for each.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>If there is no way around this, I can’t
use VTK for this application.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Eigil<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Mark
Wyszomierski [mailto:markww@gmail.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, December 15, 2005
4:57 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Eigil Samset<br>
<b><span style='font-weight:bold'>Cc:</span></b> vtkusers@vtk.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [vtkusers] Render
speed for rendering multiple renderwindows</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Wouldn't it depend on what data you're rendering? I've rendered 16 <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>wins at once when the data was just straight 2D images texture mapped<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>onto quads. Rendering multiple volumes in different windows at once on<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>the other hand might be quite the opposite. This has been my
experience.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mark<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><span class=gmailquote><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>On 15 Dec 2005 16:46:48 -0500, <b><span
style='font-weight:bold'>Eigil Samset</span></b> <<a
href="mailto:samset@bwh.harvard.edu">samset@bwh.harvard.edu</a>> wrote:</span></font></span><o:p></o:p></p>
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margin-left:4.8pt;margin-right:0in'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
The time it takes to execute the call<br>
Rw->Render();<br>
on a vtkRenderWindow increases 10-fold when executing Render() on >2 <br>
renderwindow sequentially within a tight loop. Is the display possibly<br>
cleared?<br>
This is not desirable behavior in interactive applications.<br>
<br>
Eigil<br>
<br>
<br>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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