Well, just tested, very nice, I withnessed an improvement in performance. My specs: Athlon XP2000, 768MB ram, NVidia FX 5900 @ 1680x1050 (system: linux with nvidia drivers), no AA
Using: sg + fg cvs, OSG 2.7.5; everything enabled, custom settings, using metar, no ai/mp planes around Startup: 30fps 2D/ 20fps 3D (clouds at 6000ft, scattered, thickness 600ft) Flying 400ft/440knots: 26fps 2D/ 19fps 3D (clouds at 6000ft, scattered, thickness 600ft) Flying 6300ft/440knots: 35fps 2d/ 11-22fps (clouds at 6000ft, scattered, thickness 600ft) Note: Flying within the clouds resulted in 22fps, getting very close or through clouds 11fps Changing conditions: Low vis (7000m), clouds at 8000ft(broken) and 4000ft(broken), thickness 600ft Flying @ 8000ft/440knots: 14fps 2D/ 6fps 3D >Low vis being also a frame rate killer? Changing conditions: Vis (25000m), clouds at 5500ft(broken), thickness 600ft Flying @ 8000ft/440knots: 25fps 2D/ 16fps 3D Flying @ 6000ft/440knots: 20fps 2D/ 12fps 3D Hope this helps a bit, Markus Stuart Buchanan wrote: > Stuart Buchanan wrote: > >> Vivian Meazza wrote: >> >> >>> And I have yet to see any 3d clouds. Any clues on where I should be looking >>> (yes the box is checked :-)) >>> >> Something has changed in the environment manager which means that clouds >> generateion is now inconsistent. I'm still tracking it down, as my recent >> changes shouldn't have affected this. >> > > Well, the cause was a bug in my code, but it didn't expose itself until we > moved > to multiple cameras. The attached patch fixes the problem. > > I've also put in a new heuristic to improve the frame-rate. Clouds that are > already sorted > are likely to still be sorted in subsequent frames. Therefore I've put in a > back-off > mechanism for the bubble-sort pass. This should mean that if you stay > completely > stationary, once the clouds become sorted they will eventually only perform a > bubble sort pass every 128 frames. > > It would be good to get a feel for how bad performance is with 3D clouds. At > the moment > I don't have a handle on whether performance is almost good enough, or > completely > unacceptable. I'd appreciate it if people would post their observations, > providing > details of their machine spec, graphics options and the frame-rate with and > without 3D clouds - ideally with a description of the general load on the > machine. > > Thanks, > > -Stuart > > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > ------------------------------------------------------------------------ > > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
