<div dir="ltr">Hi Stephan, <div><br></div><div><span style="font-family:arial,sans-serif;font-size:13px">GeForce GTX 580 are not great for stereo rendering as I believe they don't support Quad buffered stereo (</span><a href="http://3dvision-blog.com/3840-nvidia-with-a-new-high-end-gpu-namely-the-geforce-gtx-580/">http://3dvision-blog.com/3840-nvidia-with-a-new-high-end-gpu-namely-the-geforce-gtx-580/</a>). </div>
<div style>In that case, I believe VTK will perform software stereo implementation and that's why your performance will go down quite a bit. </div><div style><br></div><div style>I don't have the latest card but normally the consumer level card don't support stereo that well (although this might not be the case with recent NVIDIA cards). </div>
<div style><br></div><div style>Let us know if you find this performance degradation on your Quadro cards as well with latest paraview. </div><div style><br></div><div style>Thanks,</div><div style><br></div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Thu, Jun 13, 2013 at 11:13 AM, Stephan Rogge <span dir="ltr"><<a href="mailto:Stephan.Rogge@tu-cottbus.de" target="_blank">Stephan.Rogge@tu-cottbus.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Aashish,<br>
<br>
it doesn't matter which stereo type is activated. I've got only 20 FPS...<br>
This is tested on GeForce GTX 580. The ParaView version is pulled from<br>
latest git-master.<br>
<br>
Surprisingly, this problem does not occurs on my Render-PC of our<br>
CAVE-system. There I have 2 K5000 NV Quadro cards. But the code base is<br>
older (PV RC1), though I have to check it, with an updated code base and<br>
see, whether this fps drop remains.<br>
<br>
Cheers,<br>
Stephan<br>
<br>
Von: Aashish Chaudhary [mailto:<a href="mailto:aashish.chaudhary@kitware.com">aashish.chaudhary@kitware.com</a>]<br>
Gesendet: Donnerstag, 13. Juni 2013 16:49<br>
An: Stephan Rogge<br>
Cc: ParaView list<br>
Betreff: Re: [Paraview] FPS drop in stereo mode<br>
<div class="HOEnZb"><div class="h5"><br>
Hi Stephan, <br>
<br>
What particular stereo type you chose for this comparison? Also what<br>
graphics hardware you have? <br>
<br>
Thanks,<br>
<br>
<br>
On Mon, Jun 10, 2013 at 10:47 AM, Stephan Rogge<br>
<<a href="mailto:Stephan.Rogge@tu-cottbus.de">Stephan.Rogge@tu-cottbus.de</a>> wrote:<br>
Hello,<br>
<br>
I observed an unexpected frame rate drop when using one of PV's supported<br>
stereo modes within an empty scene.<br>
<br>
Considering<br>
* OS: Windows<br>
* V-Sync: On<br>
* Application to display FPS (e.g. <a href="http://www.fraps.com" target="_blank">www.fraps.com</a>)<br>
* Latest ParaView from git-master<br>
<br>
Following steps should emphasizes the frame rate drop:<br>
1. Open ParaView without any stereo mode<br>
2. Rotate or drag the camera in the 3D view for several seconds and watch at<br>
the frame rate (should be around 60 FPS)<br>
3. Close ParaView<br>
4. Open ParaView with "--stereo" flag enabled<br>
5. Rotate or drag the camera in the 3D view for several seconds and watch at<br>
the frame rate (should be around 22 FPS)<br>
<br>
Obviously, stereo rendering should take twice the time of a monocular<br>
rendering. But this should only occurs in more complex scenes. Can anyone<br>
reproduce this behavior? Is this a BUG?<br>
<br>
Best regards,<br>
Stephan<br>
<br>
<br>
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--<br>
| Aashish Chaudhary<br>
| R&D Engineer <br>
| Kitware Inc. <br>
| <a href="http://www.kitware.com" target="_blank">www.kitware.com</a> <br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br>| Aashish Chaudhary <br>| R&D Engineer <br>| Kitware Inc. <br>| <a href="http://www.kitware.com">www.kitware.com</a>
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