To follow up on my previous message: > Not so with my GIT binary: Loading of the initial cloud configuration > brings me down to 4 fps, and every time (!) a cloud is loaded from the > buffer my framerate drops from 34+ to something like 20+ for a moment - > which makes the whole experience rather jerky.
I have now made a series of tests to quantify the effect. The test situation is --disable-fullscreen --geometry=1200x900 --aircraft=ufo --airport=KINS --timeofday=noon --disable-real-weather-fetch 2.0.0 prebuilt: empty sky: 190 fps with 3d clouds: 128 fps with static cold sector tile: 90 fps when loaded, > 34 while loading with dynamical cold sector tile: 45 fps when loaded, > 30 while loading (note that this is *not* a fair comparison between standard 3d clouds and local weather clouds as the visibility and cloud view distance is rather different - not the point of the exercise) GIT built against my self-compiled OSG 2.9.10: empty sky: 234 fps with 3d clouds: 145 fps with static cold sector tile: 95 fps when loaded, > 6 (!) while loading with dynamical cold sector tile: 46 fps when loaded, >7 (!) while loading GIT build against the prebuilt OSG 2.9.6 coming with my 2.0.0 binary: empty sky: 230 fps with 3d clouds: 128 fps cold sector, static: 90 fps when loaded, > 6 while loading cold sector dynamical: 48 fps when loaded, > 8 while loading >From this I conclude that what I'm seeing is not associated with OSG or the way I compile OSG. I also conclude that it's not related to performance issues of GIT in general - I get actually a better framerate than in 2.0.0 with GIT once things are loaded. But there is a dramatical difference in the impact on performance while new models are loaded (if you're flying, 30 fps vs. 6 fps is an issue...). That difference must be somewhere in the simgear or flightgear code. I can only stress that finding that difference and making GIT as fast as 2.0.0 in loading models will decide if local weather runs smoothly or not. At this point, the system itself is now fairly optimized and runs reasonably fast. Any help would be most welcome. Cheers, * Thorsten ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
