"Le Forgeron" <jgr### [at] freefr> wrote in message
news:3DA### [at] freefr...

> It might be possible if the code was changed (heavily) so that instead
> of tracing a ray from the camera, an area (a full pixel, defined by 4
> rays) was traced from the camera. But it may generate more problems for
> other things...

I did a google and found a method for mip mapping in a raytracer here
http://www.cs.unc.edu/~awilson/class/238/#challenges
I'm not a programmer and don't even know povs internals, but I can image
that it might need heavy code changes...
But anyway, thanks for your answer, it now makes a lot more sense to me!

Is this also the reason why derivates are not supperted in POVMANs version
of shader-language?

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