Radeon driver behaviour difference between R100 and R200

[Dave Airlie]

> 
> I noticed behaviour differences running Tuxracer/PPracer between
> the two cards.
> 
> E.g. on the Radeon 7000VE, the path that Tux makes in the snow with his
> belly is correctly drawn, but not on the Radeon9200SE. On the R9200,
> this path is mostly invisible (I guess it's drawn under the surface)
> but when Tux passes a hill and slides down on a steep slant, this path
> is drawn above the snowy surface, sometimes above Tux.
> 
> And running either games on the R9200/AGP it eventually locks up
> the machine. With Tuxracer, the lockup is indeterministic, with PPracer
> one of the games' part, called "Ski jump" always locks up the machine
> hard at the same point, when Tux lands after his flight.
> Running these games on the R7000/PCI, the machine runs reliably.
> 

They r100 and r200 drivers are different drivers so they do different
things, the cards also lockup under different circumstances..  this
question may be better asked on the dri-devel list... I think the
r9200 has destablisied a bit of late, but no-one has tracked it
down....

Dave.