Nathan Kopp <Nat### [at] koppcom> wrote:
: Are there no photons (black shadow) or just no highlight (normal looking
: shadow)?

  No highlight. It looks just like the photons are dispersed so that they
don't make a highlight instead of being grouped in a very little area like
with the solid cylinder. Perhaps that's just the way it works...

  Another question:

  Do the program stop sending more photons after certain number of
reflections/refractions are performed and new ones will not affect
noticeably the illumination of the scene? What I mean is that if there
is some 'confidence' value when calculating photons, just like povray
does when sending rays from the camera (I'm talking about the ADC_Bailout
value in global_settings or 'confidence' in focal blurred camera).

  I ask this because I'm continuously running out of memory even with
the simplest scenes (I have 64 megs of ram).
  I have a scene rendering right now. It have been rendering for over a
day (ie. 24 hours) now. It spends about 99% of the time just swapping
(the image is rendered in less than a half of an hour with less photons,
but it looks blotchy).

  I think that it would be a very good idea if you could set the photons
'confidence' value in the global_settings block, just like with the focal
blur settings in the camera.
  This way you could set a very high max_trace_level and also a very high
confidence in photons and you shouldn't run out of memory.

  Btw, I hope you will compile a version of the patch with pov 3.1d/e soon
because rendering lathes with the current version is painly slow... :)

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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