What kind of settings? I've been experimenting all weekend
now. I've noticed that using pretrace_start .5 and pretrace_end .01
don't make a difference when compared to start and end at .01.

If you know something we don't, then don't hold it back! :-)


-- 
Tim Nikias v2.0
Homepage: http://www.digitaltwilight.de/no_lights


>
>
> Warp wrote:
> >
> > [...]
> >
> > > And finally, pretrace. As I understand it, pretrace is
> > > just another pass over the picture in order to check
> > > if enough samples are present at any given spot.
> >
> >   AFAIK pretrace is simply a preprocessing step to get some initial
> > samples in the scene, thus speeding up the actual raytracing.
>
> No, pretrace does not speed up the render, on the contrary it nearly
> always slows it down.  Its purpose is to achieve a better distribution of
> the radiosity samples taken.  How much this affects the results depends on
> the settings.  Just try it out yourself.
>
> In quite a lot of cases it can be efficient not to use pretrace but you
> should know what you are doing since it is more likely to cause problems.
>
> Christoph
>
> -- 
> POV-Ray tutorials, include files, Sim-POV,
> HCR-Edit and more: http://www.tu-bs.de/~y0013390/
> Last updated 17 Jun. 2003 _____./\/^>_*_<^\/\.______


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