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Significant drop in frame rate when updating from OSG 3.2.1 to 3.4.0


 
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wernerM
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Joined: 06 Feb 2013
Posts: 56

PostPosted: Mon Mar 20, 2017 3:32 pm    Post subject:
Significant drop in frame rate when updating from OSG 3.2.1 to 3.4.0
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Hi Robert,

I updated my project from version 3.2.1 to 3.4.0.
I'm on Window 7 Pro.
Unfortunately the frame rate dropped significantly from 60 fps to 2.x fps.
I verified it several times by just linking to the 2 versions without any change of my code.
Please see the 2 screen shots with the stats output.

Do you have any idea what might be the reason for it or how I can do further analysis?

Thanks for any idea.

- Werner -

Ich habe 2 zu dieser E-Mail gehörende Dateien hochgeladen:
OSG 3.4.0.png(727 KB)Hightailhttps://www.hightail.com/download/dDZFdFdRMm1veE5vZE1UQw
OSG 3.2.1.png(628 KB)Hightailhttps://www.hightail.com/download/dDZFdFdRMm1veE5jR01UQw

Mozilla Thunderbird macht es einfach, große Dateien über E-Mails zu teilen.

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robertosfield
OSG Project Lead


Joined: 18 Mar 2009
Posts: 10784

PostPosted: Mon Mar 20, 2017 5:11 pm    Post subject:
Significant drop in frame rate when updating from OSG 3.2.1 to 3.4.0
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Hi Werner,


Hopefully others will be able to chip in as I don't have a answer right now, it's certainly very odd.  If it were a general problem then we'd seen lots of issue with it being reported.

With this level of slow down it's almost like your'e invoking a software renderer when running with 3.4.0.


My next thought is that perhaps an OpenGL error is being invoked somehow. Are there any errors being reported to the console?


What happens with the standard OSG example set?  Does osgviewer run any differently with models you have on the two versions.


Robert.








On 20 March 2017 at 15:29, Werner Modenbach < (
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)> wrote:
Quote:
Hi Robert,

I updated my project from version 3.2.1 to 3.4.0.
I'm on Window 7 Pro.
Unfortunately the frame rate dropped significantly from 60 fps to 2.x fps.
I verified it several times by just linking to the 2 versions without any change of my code.
Please see the 2 screen shots with the stats output.

Do you have any idea what might be the reason for it or how I can do further analysis?

Thanks for any idea.

- Werner -

Ich habe 2 zu dieser E-Mail gehörende Dateien hochgeladen:
OSG 3.4.0.png(727 KB)Hightailhttps://www.hightail.com/download/dDZFdFdRMm1veE5vZE1UQw
OSG 3.2.1.png(628 KB)Hightailhttps://www.hightail.com/download/dDZFdFdRMm1veE5jR01UQw

Mozilla Thunderbird macht es einfach, große Dateien über E-Mails zu teilen.




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