Secondary rays and global illumination
Posted: Tue Mar 04, 2008 3:14 am
Hey there,
I was hoping someone could give me a better understanding of the attributes "Hidden to secondary rays" and "hidden to global illumination" that are under the Maxwell Render section of every maya object node.
i generally understand what GI is, and so i was wondering for what reason someone would want to hide something from GI (other than to have unrealistic lighting effects?) i read something in some other post that hiding an emitter surface from GI might serve some purpose. maybe speed of render?
And hiding from secondary rays - why would someone need to do that? is it again a performance thing?
thanks,
mv
I was hoping someone could give me a better understanding of the attributes "Hidden to secondary rays" and "hidden to global illumination" that are under the Maxwell Render section of every maya object node.
i generally understand what GI is, and so i was wondering for what reason someone would want to hide something from GI (other than to have unrealistic lighting effects?) i read something in some other post that hiding an emitter surface from GI might serve some purpose. maybe speed of render?
And hiding from secondary rays - why would someone need to do that? is it again a performance thing?
thanks,
mv