Hi Curt,
based on my experience with building FlightGear from yesterday, I'd say that
cmake is a great tool and most likely a step forward. But. it does take a
little getting used to, in particular the finer details of compiler
optimizations, etc etc. I'll try to post my more details about my experiences
this evening (I'm not in front of my development machine right now).
FWIW, after my initial build, I also got very disappointing performance, but
after running a second build with all the settings right, I did got performance
levels that I think were even better than what I had before (note, that in
addition to switching for cmake, I also installed a complete new distributions)
Cheers,
Durk
On 12 Sep 2011, at 05:07, Curtis Olson wrote:
> Sometime in the last week I noticed the Flightgear frame rates on my machine
> went to about 1/3 of what they were previously. I haven't worked super hard
> on this, but here's what I can say.
>
> When I fire up the Cub at --airport=KANE with clear skies I get:
>
> v2.4 = 90 fps (bounces around a bit but usually 90 or above)
> git = 20-25 fps (same options, same aircraft, same clear skies.)
>
> This gets even worse when I fly the f-14b off the Vinson ... even out at sea
> with just a few clouds it seems like my frame rates are usually less than 20
> (12-17 range) with the git version.
>
> Has anyone else noticed this or should I be looking for a local build problem?
>
> It doesn't seem to be related to my video driver update since v2.4 runs with
> the frame rates I expect.
>
> I recently moved over to trying to build with cmake by default, but cmake
> hides the compile options so I honestly don't know how to even check what
> compile options I'm building with now that I switched to cmake. Can anyone
> tell me how to figure that out? Is there a detailed build log that gets saved
> somewhere?
>
> Thanks,
>
> Curt.
> --
> Curtis Olson:
> http://www.atiak.com - http://aem.umn.edu/~uav/
> http://www.flightgear.org - http://gallinazo.flightgear.org
>
> ------------------------------------------------------------------------------
> Doing More with Less: The Next Generation Virtual Desktop
> What are the key obstacles that have prevented many mid-market businesses
> from deploying virtual desktops? How do next-generation virtual desktops
> provide companies an easier-to-deploy, easier-to-manage and more affordable
> virtual desktop
> model.http://www.accelacomm.com/jaw/sfnl/114/51426474/_______________________________________________
> Flightgear-devel mailing list
> Flightgear-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/flightgear-devel
------------------------------------------------------------------------------
Doing More with Less: The Next Generation Virtual Desktop
What are the key obstacles that have prevented many mid-market businesses
from deploying virtual desktops? How do next-generation virtual desktops
provide companies an easier-to-deploy, easier-to-manage and more affordable
virtual desktop model.http://www.accelacomm.com/jaw/sfnl/114/51426474/
_______________________________________________
Flightgear-devel mailing list
Flightgear-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/flightgear-devel
