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Unfortunately, there is definitely a scaling problem for incoherent rays. I am not denying that this is the case for the EG paper implementation. I am just saying that it is not a real problem for the implementation presented in the TOG paper. 3.5x (/4) is the average (we get to 4x with hyper threa...

because every batch intersection operation effectively builds a new acceleration structure I would say that it actually builds parts of a new acceleration structure, with subtle differences as well (I'll emphasize that in the SIGGRAPH talk). This is quite important as the building percentage is not...

I really like that approach (always like to be 100% dynamic on the fly). Hope they'll soon find a proper solution to scale with multiple cores. that's quite limiting right now. then again, core count seems to stagnate currently. still, they need to be fed :) once that's found, it'll be great. Well,...