Geoff Wedig wrote:
> 
> Well, the water isn't really all that big, maybe 200 x 300 feet (in my
> personal scaling 1 pov unit = 1 foot.  Makes visualization easier)  What do
> you suggest doing for the water?  A small photoned area cut out from the
> rest?  I don't like doing differences with isos, so I'm not certain that's a
> good idea.
> 

Exactly that, it's probably really worth trying, i not yet tried it with
isosurfaces, but i don't see a reason why it sould not work.  For a
realistic horizon you will need quite a large water shape so you would
even have no choice.  

> 
> That's really tricky.  I'm using PVMega, so most output is mostly
> surpressed.  The full picture took 72:56:00 using 15 PII 400's running
> Mosix.  Probably not as long as the Tulip pic on a single processor, but I'm
> not about to try it. :/
> 

That really sound quite long, the photon time is probably negligible
anyway with only 20000 photons.  

> This was significantly longer than the darkness pictures, despite those
> having the major light sources within scattering media, and area lights
> besides.  The bright picture uses a far off point light, so photons slow
> things down immensely (of course, photons + isos + radiosity is never going
> to be fast)
> 

I was just about to suggest a lower error_bound when i saw your picture
first, but it's probably out of question with such a slow render.  

BTW, do you use some kind of manual bounding for the bricks?

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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