[TuxKart-devel] Performance issues

[Ingo R. <gr...@gm...>]

I now produced a penny-kart with 1100 polys, which is basically as low
as you can get when the model should still look reasonably good when
looking at it in-game. However even if I use that model for all karts
and remove skidmarks and particle effects and use a simple 2000 poly
track the game still slows down quite a bit if all ten karts are in
the view, which happens for example when you start. This slow down
happens here on a 1Ghz Athlon with GeForce5200FX at 800x600.

Doing the math, we need around 1 million polygons per second in this
setup, advertisement tells me that even a Geforce256 should be able to
render 10 million polygons per second.

Is Tuxkart doing something seriously wrong when it comes to rendering
or am I simply expecting to much from the rendering hardware and we
need to fall back to much simpler models and tracks? Using LOD for the
karts will of course help too, however it will quite seriously
increase the time needed to finish the kart models, so I would prefer
to avoid it.

Another 'solution' might be to just limit the framerate, so that the
slowdowns are much less noticeable, however that doesn't really sound
much good either.

Any other suggestion on how to fix these performance issues?

PS: Could someone look into the code and figure out why the models in
the character select are flat shaded?

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