Mathias Fröhlich wrote:
> Sent: 08 October 2004 07:24 > To: [EMAIL PROTECTED]; FlightGear developers discussions > Subject: [Flightgear-devel] [PATCH] crease for ac3d files and speedup > > > Hi all, > > During the past days I have done some profiling on flightgear. One final > outcome of that work was, that most time is spent in ssg routines (yes, > ssg > not OpenGL!!). The problems are the huge amount of small leaf nodes we get > from the ac file loader. That vertex optimization pass makes this a bit > better but there was still room for improovement. > > I have now changed the ac3d file loader to first collect all surface > elements > of a leaf object and then split them to a minimum number of leaf nodes > according to material and colour properties. > > For my local setup (radeon 9100, athlon XP 2400+) this gave me a framerate > speedup up to 40% (16 fps -> 26fps, for the c172 rendered in a window to > not > hit the ancient radeons fill rate limit). I would guess that the average > speedup is about 25%-30%. > > As a /sideeffect/ it was now easy to implement the crease tag for ac3d > files. > Ac3d models look now the same as in ac3d. > > Attached is a patch to todays plib anoncvs. > > Is sombody there with cvs write access to plib? Can somebody apply this > patch, This looks like a good bit of work all round. I look forward to trying it very soon. Regards Vivian _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
