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ART rendering bug

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VBSmiles:
Bah... didn't save the an8 :( sorry Steve

However I made another thread in relation to this one where I deturmined that global lighting works fine. I found that the problem was with Local lights. ( didn't check the spot lights though. )

Another thing I had messed with was pixel sampling but don't think that was it. I'll try to recreate the problem while I have time tonight, and send it to you.

VBSmiles:
Sent ya a file...... pretty simplistic, to help you out.

 :D I keep refering infinate lighting as global.

Steve:
Got it, and, yup, it's got stripes!  Something is definitely whacky in my pseudo random number tables.  Thanks for the project.

#097-017 - Reflections show horrizontal bands in ART local light using soft shadows.

Steve:
Wa-hoo!  I found a subtle but serious problem with the fundamental way that Anim8or generates samples.  Single samples are fine but they can become correlated with subsequent samples of the same value.  For example, a reflected surface samples lights twice, once on the original hit and once on the surface hit by the reflection.  Correlated samples are bad because the loose some of their "randomness" and can appear as many kind of artifacts.  This happens in the Reflective Egg example when the number of samples is a multiple of 4 (like 4, 16, 36) but not nearly as much at other numbers (9, 25, 49) though it still can happen.

I've fixed the problem :)

VBSmiles:
Good job Steven!
 ;D

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