From: Gregory Schultz (gschultz++at++mitre.org)
Date: 01/10/2000 06:39:12
We have been experiencing the same type of problem with the
out-the-window
visuals for our cockpit simulator. During turns with extreme turn rates
the
textures flash and smear. The flashing appears usually on large
textures that
fill a large portion of the screen. We are using an Onyx2/Infinite
Reality
system with two 195 MHz IP27 processors. We are using IRIX 6.4 with
patches.
Greg
Rob Jenkins wrote:
>
> Roy
>
> The incident you mention sounds like it's related to specifically texture
> corruption. You describe something where the spurious tris appear where you
> have no geometry. Could you run some other gfx apps, perhaps straight OpenGL
> demos to see if it still happens, sounds a bit like a HW problem to me...
>
> Cheers
> Rob
>
> > -----Original Message-----
> > From: Roy Ruddle [mailto:Ruddle++at++Cardiff.ac.uk]
> > Sent: 10 January 2000 10:44
> > To: info-performer++at++sgi.com
> > Subject: Spurious triangle flashing
> >
> >
> > Hi there,
> >
> > I've just upgraded out Max Impact from 6.5.3 to 6.5.6 (to fix
> > the constant
> > frame rate/real-time bug). Unfortunately the upgrade has introduced a
> > horrible graphics bug (at least, I'm pretty sure it's a bug).
> >
> > Previously everything worked fine. Now I have triangles
> > flashing on the
> > screen in places there are no graphical objects (but within the
> > graphics window) and on top of/across other graphical objects. This
> > happens when I run the old executable (6.5.3) or a
> > recompiled version.
> >
> > It can't be a pfState problem because it isn't flashing parts
> > of the DB
> > in-situ. Thoughts anyone? Might it be related to #758216 (reported as
> > "Texture flashing on Octanes")?
> >
> >
> > roy
> > --------------------------------------------------------------
> > ----------
> > Roy Ruddle, Senior Research Associate
> > Cardiff Human Interfaces and Virtual Environments Laboratory (C-HIVE)
> > School of Psychology, Cardiff University, PO Box 901, Cardiff CF11 3YG
> > Tel: +44 (0) 2920 875030 (direct), Fax: +44 (0) 2920 874858
> > Email: Ruddle++at++CARDIFF.AC.UK http://www.cf.ac.uk/uwc/psych/ruddle/
> >
> >
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