Re: [Flightgear-devel] Main Airports Conflict withGraphic Card6600GT !!!
Le mercredi 22 juin 2005 à 18:50 +0200, Harald JOHNSEN a écrit : > Gerard Robin wrote: > > >Le mercredi 22 juin 2005 à 09:49 -0500, Alberico, James F a écrit : > > > > > >>> The hardware is able to do it, with the old driver 6229 it can. > >>>But the average performance is less, because that driver > >>>does not suit to these new GPU with GPL 2. May be a bug in > >>>the last NVIDIA driver. > >>>I could explain the problem if i was more accurate about GL > >>>and that light animation. > >>> > >>> > >>>-- > >>>Gerard > >>> > >>> > >>> > >>> > >>For what it's worth, additional info on this thread: > >> > >>I saw the same bad performance on an Fx 3400 with new driver. I was not > >>able to find any properties or run options to alleviate the problem (10 > >>fps or less, when looking at an airfield -- running with enhanced > >>lighting OFF). > >> > >>Gerard's fix (comment out the call to get_vasi_lights_root()) worked > >>great. All is smooth now. Thanks, Gerard! > >> > >>Jim > >> > >> > >> > >> > > Thanks, > >And i worry than kind of solution. > >It is only a 10 lines code in Simgear which slow the world of NVidia, > >what a pity ! :=) > > > > > change : > glPolygonMode(GL_FRONT, GL_POINT); > with > glPolygonMode(GL_FRONT, GL_LINE); > in render.cxx, its not perfect but you will be able to see lights > without fps loss. > > Harald. > > I don't understand the code itself is in Simgear !!! > -- Gerard ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Main Airports Conflict withGraphic Card6600GT !!!
Gerard Robin wrote: Le mercredi 22 juin 2005 à 09:49 -0500, Alberico, James F a écrit : The hardware is able to do it, with the old driver 6229 it can. But the average performance is less, because that driver does not suit to these new GPU with GPL 2. May be a bug in the last NVIDIA driver. I could explain the problem if i was more accurate about GL and that light animation. -- Gerard For what it's worth, additional info on this thread: I saw the same bad performance on an Fx 3400 with new driver. I was not able to find any properties or run options to alleviate the problem (10 fps or less, when looking at an airfield -- running with enhanced lighting OFF). Gerard's fix (comment out the call to get_vasi_lights_root()) worked great. All is smooth now. Thanks, Gerard! Jim Thanks, And i worry than kind of solution. It is only a 10 lines code in Simgear which slow the world of NVidia, what a pity ! :=) change : glPolygonMode(GL_FRONT, GL_POINT); with glPolygonMode(GL_FRONT, GL_LINE); in render.cxx, its not perfect but you will be able to see lights without fps loss. Harald. ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Main Airports Conflict withGraphic Card6600GT !!!
Le mercredi 22 juin 2005 à 10:25 -0500, Curtis L. Olson a écrit : > Alberico, James F wrote: > > >For what it's worth, additional info on this thread: > > > >I saw the same bad performance on an Fx 3400 with new driver. I was not > >able to find any properties or run options to alleviate the problem (10 > >fps or less, when looking at an airfield -- running with enhanced > >lighting OFF). > > > >Gerard's fix (comment out the call to get_vasi_lights_root()) worked > >great. All is smooth now. Thanks, Gerard! > > > > > > A better fix might be to use point lights for VASI/PAPI rather than > commenting them out entirely. > > Here's my theory. VASI/PAPI and the approach lighting "rabbit" get > drawn with larger antialiased points. These are "unaccelerated" for the > gamer level hardware (i.e. GeForce) but I found in the earlier versions > of the cards/drivers that you could easily get away with just drawing a > few larger "software" points and not see any kind of performance hit at > all ... as long as you didn't get too crazy with it. > > Now, nvidia does offer a hardware accelerated version of these points in > it's more expensive quadro line of cards intended for the "professional" > graphics market. > > I suspect that they are intentionally making antialiased points > artificially slow in their latest drivers to prevent people like us from > getting away with using just a few here and there without upgrading to > really high priced Quadro cards. > > I could be wrong ... maybe there's a valid technical reason, but this > sounds more like a "marketing" thing than a driver bug from my perspective. > > Curt. > Thank Curt that explanation , is the good one. The question is what could be done on the fg side ? in order to keep the best speed in every usage of NVidia cards. The card with old driver in FG gives an average speed from 30 to 70 fps The card without overclock with new driver in FG an average from 50 to 90 fps (sometime more than 100 fps). The card with overclock less than 10% more (~8) With Celestia-KDE speed seem to be twice When we have to use the very NVidia last driver,(and not to buy a new more expensive card) what can be done ? -- Gerard ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Main Airports Conflict withGraphic Card6600GT !!!
Alberico, James F wrote: For what it's worth, additional info on this thread: I saw the same bad performance on an Fx 3400 with new driver. I was not able to find any properties or run options to alleviate the problem (10 fps or less, when looking at an airfield -- running with enhanced lighting OFF). Gerard's fix (comment out the call to get_vasi_lights_root()) worked great. All is smooth now. Thanks, Gerard! A better fix might be to use point lights for VASI/PAPI rather than commenting them out entirely. Here's my theory. VASI/PAPI and the approach lighting "rabbit" get drawn with larger antialiased points. These are "unaccelerated" for the gamer level hardware (i.e. GeForce) but I found in the earlier versions of the cards/drivers that you could easily get away with just drawing a few larger "software" points and not see any kind of performance hit at all ... as long as you didn't get too crazy with it. Now, nvidia does offer a hardware accelerated version of these points in it's more expensive quadro line of cards intended for the "professional" graphics market. I suspect that they are intentionally making antialiased points artificially slow in their latest drivers to prevent people like us from getting away with using just a few here and there without upgrading to really high priced Quadro cards. I could be wrong ... maybe there's a valid technical reason, but this sounds more like a "marketing" thing than a driver bug from my perspective. Curt. -- Curtis Olsonhttp://www.flightgear.org/~curt HumanFIRST Program http://www.humanfirst.umn.edu/ FlightGear Project http://www.flightgear.org Unique text:2f585eeea02e2c79d7b1d8c4963bae2d ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
RE: [Flightgear-devel] Main Airports Conflict withGraphic Card6600GT !!!
Le mercredi 22 juin 2005 à 09:49 -0500, Alberico, James F a écrit : > > -Original Message- > > From: Gerard ROBIN [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, June 08, 2005 1:50 PM > > To: FlightGear developers discussions > > Subject: Re: [Flightgear-devel] Main Airports Conflict > > withGraphic Card6600GT !!! > > > The hardware is able to do it, with the old driver 6229 it can. > > But the average performance is less, because that driver > > does not suit to these new GPU with GPL 2. May be a bug in > > the last NVIDIA driver. > > I could explain the problem if i was more accurate about GL > > and that light animation. > > > > > -- > > Gerard > > > > > > For what it's worth, additional info on this thread: > > I saw the same bad performance on an Fx 3400 with new driver. I was not > able to find any properties or run options to alleviate the problem (10 > fps or less, when looking at an airfield -- running with enhanced > lighting OFF). > > Gerard's fix (comment out the call to get_vasi_lights_root()) worked > great. All is smooth now. Thanks, Gerard! > > Jim > > Thanks, And i worry than kind of solution. It is only a 10 lines code in Simgear which slow the world of NVidia, what a pity ! :=) -- Gerard ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
RE: [Flightgear-devel] Main Airports Conflict withGraphic Card6600GT !!!
> -Original Message- > From: Gerard ROBIN [mailto:[EMAIL PROTECTED] > Sent: Wednesday, June 08, 2005 1:50 PM > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] Main Airports Conflict > withGraphic Card6600GT !!! > The hardware is able to do it, with the old driver 6229 it can. > But the average performance is less, because that driver > does not suit to these new GPU with GPL 2. May be a bug in > the last NVIDIA driver. > I could explain the problem if i was more accurate about GL > and that light animation. > > > -- > Gerard > > For what it's worth, additional info on this thread: I saw the same bad performance on an Fx 3400 with new driver. I was not able to find any properties or run options to alleviate the problem (10 fps or less, when looking at an airfield -- running with enhanced lighting OFF). Gerard's fix (comment out the call to get_vasi_lights_root()) worked great. All is smooth now. Thanks, Gerard! Jim ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
