Hello Tim, Mathias, This is a digest of tests i have done , (and a repeat of previous separated mails)
I try to understand the big FPS differences i get when i build FG first with an old OSG library 10 april 2007, second with a recent OSG library 1.9.4 version FG was patched with Tim Moore patch OSG stats. Every components and parameters are the same on both built FG : -same computer and operating system -same FlightGear cvs source -same Nvidia parameter -same Aircraft -same airport and scenery -same FG parameter -the aircraft was in place on the runway, parking brake On. The measurement values ( average) which where given are: OSG version ---old 10-04-207-------------||----------recent v 1.9.4 Fps-------------------41-----------------------||-----------14 Event----------------4.5-----------------------||-----------5.5 Update--------------2.5-----------------------||-----------3.5 Cull------------------6.5-----------------------||-----------34 Draw---------------10.5----------------------||-----------21.5 Gpu------------------12-----------------------||---------19.5 the following snapshots show these values OLD OSG lib http://perso.orange.fr/GRTux/OSG_older-Stat.jpg RECENT OSG lib http://perso.orange.fr/GRTux/OSG-Stat.jpg Why a so big difference ? if i look at the performance i conclude, FG likes better to be built with that one month old OSG library rather than to be built with the more recent available OSG library. You could notice, 14 fps with the new OSG lib, makes FG unusable. The 41 fps which is given with the old OSG lib look like the values we had, when the first comparative tests where done, PLIB versus OSG, for me in the same situation/condition. I can understand , the old OSG content was probably more buggy than the recent one and a lot of modifications/improvements have been done on it. I wonder if FG has followed these modifications/improvements. Regards -- Gérard ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
