Why do we choose to Monte Carlo integration on the BRDF instead of the surface integral?

gloose

Does the Monte Carlo algorithm have a high risk of missing powerful light sources coming from a very narrow area, i.e. a laser pointer? It seems unlikely that a random direction would happen to be pointing in the same direction as the laser pointer. I suppose the solution is just to take more samples?

jcm

This might be discussed later, but what part of this process is accelerated in RT chips?

bobzhangyc

I am missed... I hope we can talk about it in the lecture again.

Why do we choose to Monte Carlo integration on the BRDF instead of the surface integral?

Does the Monte Carlo algorithm have a high risk of missing powerful light sources coming from a very narrow area, i.e. a laser pointer? It seems unlikely that a random direction would happen to be pointing in the same direction as the laser pointer. I suppose the solution is just to take more samples?

This might be discussed later, but what part of this process is accelerated in RT chips?

I am missed... I hope we can talk about it in the lecture again.

How do we determine the sampling distribution?