[Paraview] FPS drop in stereo mode

[Stephan Rogge]

Aashish,

it doesn't matter which stereo type is activated. I've got only 20 FPS...
This is tested on GeForce GTX 580. The ParaView version is pulled from
latest git-master.

Surprisingly, this problem does not occurs on my Render-PC of our
CAVE-system. There I have 2 K5000 NV Quadro cards. But the code base is
older (PV RC1), though I have to check it, with an updated code base and
see, whether this fps drop remains.

Cheers,
Stephan

Von: Aashish Chaudhary [mailto:aashish.chaudhary at kitware.com] 
Gesendet: Donnerstag, 13. Juni 2013 16:49
An: Stephan Rogge
Cc: ParaView list
Betreff: Re: [Paraview] FPS drop in stereo mode

Hi Stephan, 

What particular stereo type you chose for this comparison? Also what
graphics hardware you have? 

Thanks,


On Mon, Jun 10, 2013 at 10:47 AM, Stephan Rogge
<Stephan.Rogge at tu-cottbus.de> wrote:
Hello,

I observed an unexpected frame rate drop when using one of PV's supported
stereo modes within an empty scene.

Considering
* OS: Windows
* V-Sync: On
* Application to display FPS (e.g. www.fraps.com)
* Latest ParaView from git-master

Following steps should emphasizes the frame rate drop:
1. Open ParaView without any stereo mode
2. Rotate or drag the camera in the 3D view for several seconds and watch at
the frame rate (should be around 60 FPS)
3. Close ParaView
4. Open ParaView with "--stereo" flag enabled
5. Rotate or drag the camera in the 3D view for several seconds and watch at
the frame rate (should be around 22 FPS)

Obviously, stereo rendering should take twice the time of a monocular
rendering. But this should only occurs in more complex scenes. Can anyone
reproduce this behavior? Is this a BUG?

Best regards,
Stephan


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-- 
| Aashish Chaudhary 
| R&D Engineer         
| Kitware Inc.            
| www.kitware.com