Apache wrote:
> 
> I've calculated 8000 radiosity samples (see p.b.i and p.b.s-f). As you can
> see in the image the 255x255x255 resolution isn't fine enough for lots of
> radiosity samples: the image already shows that the distribution has
> rectangular artifacts due to rounding errors.

It is fairly obvious that using bytes to store the directions is just a
hack to save memory.  Apart from the accuracy problem it also costs some
computation time to unpack the directions for every radiosity sample
taken.  

> Anyhow I'm posting an image
> and a zipped set of files in p.b.s-f that you can use to insert the samples
> into the POV-Ray source-code. I can't do that myself now, because I'll have
> to install another compiler for that :-(

Without any information on how the samples were generated this suffers
from the same problem as the original set of sample directions.  

Christoph

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