Zeger Knaepen wrote:
> 
> I was just looking at some of the real-time raytracing demos at
> http://www.acm.org/tog/resources/RTNews/demos/overview.htm and I was
> wondering: why can't POV-Ray be that fast?
> 

If you restrict a raytracer to a very basic functionality (like only
certain highly optimized shapes) you can gain a major speedup.  

Furthermore these programs use direct access to the graphics hardware and
probably integer arithmetic for their calculations.  

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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