Oops, you are right, that information was all in your original message, just
not in the quoted versions later. Sorry about that. It really looks like
it might be some sort of osg bug (or possibly our usage of osg?) I've seen
a similar issue using open flight models in our commercial driving sim
software when the underlying textures aren't powers of two, but that doesn't
necessarily have anything to do with the FlightGear software.
I know our runway textures are sized in powers of two because I very
carefully did that way back when Erik and I were putting them all together.
Hopefully no one changed them in the meantime. :-)
Perhaps there is some rendering effect that certain aircraft use, or that is
used by some certain model near the affected airport that turns on, or
changes some sort of opengl state (texture translation?) and then we aren't
getting that turned off properly before rendering the next pass of the
scene.
I'm still completely lost in the world of OSG and how it does all it's state
management, but maybe someone with better OSG knowledge could take a peek at
some point. State management bugs (if that is what this is) can be really
tough to track down though.
Curt.
On 4/5/07, Gabor Toth <[EMAIL PROTECTED]> wrote:
Hi Curt,
Thanx for the quick answer, the details from my first mail about this
issue
are:
Config: AMD Athlon64 X2 4200, Geforce 6600 (Asus)
OS: Fedore Core 5
Kernel: 2.6.20-1.2307.fc5smp
nVidia driver version: 1.0-9755
OSG revision: 6398
SimGear, FlightGear version: CVS 2007/04/05
CFLAGS="-g -march=athlon-xp -O3 -fomit-frame-pointer -pipe"
CXXFLAGS=$CFLAGS
gcc version 4.1.1 20070105 (Red Hat 4.1.1-51)
Kindest regards,
Gabor
On Thursday 05 April 2007 14:01, Curtis Olson wrote:
> On 4/5/07, Toth Gabor wrote:
> > On Thursday 05 April 2007 04:34, Csaba Halász wrote:
> > > On 4/5/07, Gabor Toth wrote:
> > > > Hi,
> > > >
> > > > I've found a funny rendering bug seen on the following pictures:
> > > >
> > > > http://fgfs.i-net.hu/downloads/fgfs-screen-054.jpg
> > > > http://fgfs.i-net.hu/downloads/fgfs-screen-055.jpg
> > > > http://fgfs.i-net.hu/downloads/fgfs-screen-056.jpg
> > > >
> > > > Airport: VHHH
> > > > Aircraft: 747
> > >
> > > For the benefit of the mailing list:
> > > I could reproduce this behaviour as well. After recompiling with SDL
> > > everything seems to work OK, however.
> > >
> > > Greets,
> > > Csaba
> >
> > Some additional info: This behavior occurs at other airports as
well.
> >
> > Also I've found that this happens only when using any of the
external
> > views,
> > but does not happen when using cockpit view.
> >
> > Bug occurs only when FG runs at 1024x768 or 1280x1024 resolution.
There
> > is
> > no problem at 800x600.
> >
> > Other aircraft tested to be safe: 777-200, seahawk
> >
> > I've also uploaded a short mpg file to let you see the way how
ground
> > textures move depending on heading or banking of a/c and view angle.
> >
> > http://fgfs.i-net.hu/downloads/out.mpg
>
> Could this be related to the open-gl drivers? What video card and
drivers
> are you running? Is this with the plib/ssg version of FlightGear or the
> osg version?
>
> Curt.
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http://baron.flightgear.org/~curt/ http://www.humanfirst.umn.edu/
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