Re: [TuxKart-devel] Performance issues

[Steve B. <sjb...@ai...>]

Ingo Ruhnke wrote:

> 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.

That's benchmark numbers.

That's 10 million *perfectly* tri-stripped polygons with minimal additional
data (ie no normals, no texture coords) - with the CPU doing nothing else
but feeding the polygons into the hardware - no texture map switching,
no switching of rendering modes, etc, etc.  It also assumes that you've
used some nVidia-specific extensions and insider information associated
with the size of the data blocks that end up going over AGP.

> 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.

LOD is a huge help.

---------------------------- Steve Baker -------------------------
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