Hi Robert,
I have done 1 week of testing now on the dramatic performance issue.
As I said, when linking my program against osg 3.2.1 I get 60 fps
and linking the program without any change against version 3.4.0 I get
2.5 fps.
Exporting my scene and running it in your viewer in 3.4.0 also has 60 fps.
So the problem is somewhere in the settings of my software. :-(
I used 2 different tools for profiling and both tell me that about 95%
of the
running time is done in nvoglv64.dll. One of the tool tells me it is
mainly the
function "DrvPresentBuffers" but I'm not sure if this is reliable.
I know it is actually not your duty giving help here but you are very
familiar with the driver calls and it would help a lot if you can provide
an idea what kind of setting might cause this issue.
Many thanks in advance
- Werner -
Am 20.03.2017 um 18:08 schrieb Robert Osfield:
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
<werner.modenb...@texion.eu <mailto:werner.modenb...@texion.eu>> wrote:
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
<https://www.hightail.com/download/dDZFdFdRMm1veE5vZE1UQw>(727
KB)Hightail
<https://www.hightail.com>https://www.hightail.com/download/dDZFdFdRMm1veE5vZE1UQw
<https://www.hightail.com/download/dDZFdFdRMm1veE5vZE1UQw>
OSG 3.2.1.png
<https://www.hightail.com/download/dDZFdFdRMm1veE5jR01UQw>(628
KB)Hightail
<https://www.hightail.com>https://www.hightail.com/download/dDZFdFdRMm1veE5jR01UQw
<https://www.hightail.com/download/dDZFdFdRMm1veE5jR01UQw>
Mozilla Thunderbird <http://www.getthunderbird.com> macht es
einfach, große Dateien über E-Mails zu teilen.
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