[osg-users] Lagging while 3D maneuvering

[Knut Hunstad]

Hi!

My company makes a program that uses OSG for 3D windows of terrain models. I am not the OSG programmer. But a user sitting next to me has trouble with a totally new PC with good specifications and an NVIDIA Quadro P4000 graphics card. The 3D maneuvering is lagging to the extent of being difficult to use, while other PCs with much less specs have totally smooth maneuvering in the same model.

Any tips on how to go about finding out what the cause could be are welcome!


Thank you!

Cheers,
Knut

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http://forum.openscenegraph.org/viewtopic.php?p=74255#74255

[L. Voerman]

Hi Knut,
after basic checks (os - driver version - driver settings) I guess I would
try to make "identical" screenshots on the problematic machine and a normal
machine,
and get photoshop to subtract the results.
This could point out differences in:
stereo - quadro cards can do stereo and might only show one eye.
anti aliasing - quadro's can do more (lines for example) - this might cause
a performance hit
anisotropic filtering - different defaults?

Further options:
driver setting for "Threaded optimization" - not sure what the "best"
setting is - but I think it changed performance for me once.

Laurens.

Post by Knut Hunstad
Hi!
My company makes a program that uses OSG for 3D windows of terrain models.
I am not the OSG programmer. But a user sitting next to me has trouble with
a totally new PC with good specifications and an NVIDIA Quadro P4000
graphics card. The 3D maneuvering is lagging to the extent of being
difficult to use, while other PCs with much less specs have totally smooth
maneuvering in the same model.
Any tips on how to go about finding out what the cause could be are welcome!
Thank you!
Cheers,
Knut
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http://forum.openscenegraph.org/viewtopic.php?p=74255#74255
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