On Wednesday 02 January 2008 19:56, Yannick LE NY wrote: > Hello, > > I found a big problem with Flightgear and the OpenGL support in > Nvidia drivers. > I is a problem with software opengl features/functions support by > nvidia driver. > > I think that this problem is the true problem reported by nvidia > users and that was here : > http://wiki.flightgear.org/flightgear_wiki/index.php?title=Troubl >eshooting_Problems#Slow_Framerate_with_OpenGL_Card > > > I use : > Windows 2000 SP4, > FlightGear 1.0.0 precompiled win32 binaries, > CPU Intel Celeron D 2,66Ghz > RAM 512MB > > When I launch Flightgear 1.0.0, it log/display : > > With nvidia driver 4.5.2.3 or 5.3.0.3 : > > Finished command line arguments > Initializing splash screen > GeForce4 MX 440 with AGP8X/AGP/SSE2 > Max texture size = 2048 > Depth buffer bits = 16 > Loading Airport Database ... > Data file version = 810 > > or With nvidia driver 5.6.6.4 or 7.7.7.2 : > > Finished command line arguments > Initializing splash screen > GeForce4 MX 440 with AGP8X/AGP/SSE2/forceSW > Max texture size = 2048 > Depth buffer bits = 16 > Loading Airport Database ... > Data file version = 810 > > I don't know the forceSW parameter. > > I had a nvidia Geforce 4 MX 440 graphic card with 64MB RAM > and I used an old nvidia 4.5.2.3 (Forceware 45)(date : 13 August > 2003). The 27th december 2007, I thank than if I change my > graphic card for a new Nvidia Geforce 6200 - 256MB, > I will have better performance with Flightgear. And I bought a > new graphic nvidia 6200 card. > But with this card and 7.7.7.2 nvidia driver I can not use > Flightgear 1.0.0, it was too slow (1fps). > I did search on the internet to increase fps in flightgear. > After these search, I try to enable triple buffering for opengl > and disable vsync with the tools nhancer > (http://www.nhancer.com/) or with application profile in the > nvidia driver tool. > But essays with these configurations don't work. > I bought a new graphic card for nothing! > I was angry ! > > I replace this new card with my old nvidia Geforce 4 MX 44O > graphic card and > then I use a 7.7.7.2 nvidia driver. > With this configuration, I found that flightgear 1.0.0 was very > slow and have the same > performance than with my nvidia 6200 card. > Strange... Is it a problem with nvidia drivers ? > > I did investigations. [snip...] > > I try with the nhance tool to force in the opengl version support > in the the nvidia driver, > but this solution don't work. > > Please add a command line option like > fgfs.exe --opengl-version-to-use= > for restricting flightgear to use a specific opengl version and > not the version that was indicated by the nvidia driver. > With this option, I can use flightgear with the GPU opengl 1.2 > hardware functions only in > my nvidia geforce 4 mx440 graphic card. > Opengl 2.0 software functions cost too many in CPU > resources/power in Flightgear 1.0.0. > > Thanks to correct or add this workaround in the Flighgear source. > > Yannick
I don't know the answer to this but a few things to check: First of all, the Geforce 4 MX440 only goes up to 4xAGP - it's strange it was being reported at 8x AGP. The forceSW tag in the second lot of output may be saying that hardware 3d acceleration was disabled. Try setting the video card bit-depth to 24bpp instead of 16bpp. Don't worry about OpenGL2.0 - that won't be an issue here. LeeE ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Flightgear-users mailing list Flightgear-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-users
