Re: [Flightgear-devel] OSG Performance on WIndows

[Curtis O. <cur...@gm...>]

I have no idea, but I do know that plib/ssg was very tight and clean and
fast code.  OSG is very feature rich, it has far more capabilities than
plib/ssg, but features usually come with a price.  I wouldn't be surprised
if we take some amount of a frame rate hit moving to OSG.  Hopefully we can
find ways to optimize to minimize this problem, and perhaps there is
something glaring we can find that will win a large amount of this
performance loss back.

Curt.


On 11/5/06, Olaf Flebbe <fg...@of...> wrote:
>
> Hi,
>
> while double (and triple ;-) - checking everthing I discovered that I
> had a prerelease of Mathias overhauled AC3D Loader in my 3rdparty.zip.
> You may find an update on my website. Sadly, this doesn't change
> framerate.
>
> Uncommenting sceneView->update() in render.cxx gives a performance jump
> from 60FPS to 80FPS. (plib was 100FPS). Traversing the scenegraph seems
> to be quite timing relevant. Can we limit this special update-traversal
> only to the aircraft (IMHO it is all it does)?
>
> Can somebody confirm that the framerate with OSG is better compared to
> plib on Linux? Default c172 at KSFO, please. Does anybody has a idea
> whats going on? The OSG Code is pretty #ifdef'less.
>
> Olaf
>
>
>
>
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-- 
Curtis Olson - University of Minnesota - FlightGear Project
http://baron.flightgear.org/~curt/  http://www.humanfirst.umn.edu/
http://www.flightgear.org
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