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Posted 14 November 2012 - 04:46 PM
Posted 14 November 2012 - 08:19 PM
“If I understand the standard right it is legal and safe to do this but the resulting value could be anything.”
Posted 14 November 2012 - 10:28 PM
Posted 15 November 2012 - 06:15 AM
I've never seen this before. What does the code look like?
I've seen something very similar to this this, turned out to be precision issues with shadow rays, that is is the ray was intersecting with the surface it was shot from, even though it should be starting from the surface, adding a small offset/bias fixed the problem. it might be a similar issue in your case.