Marc-Hendrik Bremer wrote:
> 
> That's undoubted (now Pov found a max_gradient of 6.294), but my point was,
> that setting the accuracy value to high, can lead to artefacts. I'll post a
> simplified code for this in p.t.s-f (under "Low accuracy values in
> Isosurfaces"). Output changes a bit (because of a simplified texture), but
> the behaviour should be reproducible. To exclude that this is a max_gradient
> problem I just rendered it with max_gradient 60. Those black parts remained.
> Perhaps it's another problem, but I can't imagine which.
> 

I can see what you mean.  But these artefacts are different from those
resulting of insufficient max_gradient.  I don't think they are something
new users have to struggle with very often.  

I don't know much about the isosurface algorithm, but maybe that's even
something that could be fixed.

BTW, i recognize some of my textures in that scene...

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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