Geoff Wedig wrote in message <3aae32a8@news.povray.org>...
> And yeah, my objects are pseudo random, so it's not so simple to optimize by
> hand, but I think I can write the algorithm to do it.


perhaps your objects are small enough with comparision with cutting object and
size of pixels - than you can remove instead differencing and it increase speed
of rendering a lot (no differences and less objects)

ABX

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