If its any help - I had a problem using around 6000 spheres to make a
rounded (welded) inside corner on a curve. Using merge{} instead of
union{} and playing with max_trace_level and
max_intersections in global settings eventualy helped.

Except in glass objects with that obstinate couple of black pixels, I
can't see much change increasing m_t_l above around 30. Sorry, but I
don't remember what m_i did to speed.

I used DOS versions of pov3.1g and mp0.6 and the stats output gave
useful help about progress.

Alf

"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3A82DEF8.8D3F50A6@gmx.de...
>
> I'm working on my IRTC entry and am continuously getting I-Stack
overflows
> although i'm already using max_intersections above 1000.
>
> 1) Are there other things apart from intersection/difference
affecting
> this and what are the CSG constructions needing a high
max_intersections -
> intersections containing a lot of objects or highly nested CSG?
>
> 2) How does increasing max_intersections influence the rendering
speed in
> general, anyone any experience concerning that?
>
> 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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