Each ray is a single sample in Monte Carlo integration.
Rishiparikh
How do we determine to use 100 rays. Earlier, we saw that 1 ray resulted in high variance, but to me the 16 ray example looked almost as good as the 100 ray example. I'm curious if there is a given number of rays to choose from, or If this is just something that is specific to the context of what is being rendered.
Zenuriken
I'm a little confused about what it means to sample the light source area. Does this mean we are taking only the rays that hit the light source into consideration when computing the color of a surface at a particular point? In ray casting in general, wouldn't it be easier if we casted rays from the light source itself onto the surrounding environment, rather than the other way around?
Each ray is a single sample in Monte Carlo integration.
How do we determine to use 100 rays. Earlier, we saw that 1 ray resulted in high variance, but to me the 16 ray example looked almost as good as the 100 ray example. I'm curious if there is a given number of rays to choose from, or If this is just something that is specific to the context of what is being rendered.
I'm a little confused about what it means to sample the light source area. Does this mean we are taking only the rays that hit the light source into consideration when computing the color of a surface at a particular point? In ray casting in general, wouldn't it be easier if we casted rays from the light source itself onto the surrounding environment, rather than the other way around?