Forum: Poser - OFFICIAL


Subject: Warning! Poser implements Reflection input incorrectly!!

bagginsbill opened this issue on Sep 22, 2005 ยท 19 posts


diolma posted Thu, 22 September 2005 at 3:54 PM

LOL! I was caught out by that one too, some time ago:-) But OTOH, Poser does NOT handle reflections correctly (along with most, if not all, other ray-tracing apps). It reflects colours and brightness on the surface, but does not reflect LIGHT back into the scene (and we all know mirrors reflect light, don't we?). P6 Ambient Occlusion may help with this - I've yet to try it, but I doubt it'll be work very realistically. The reason, of course, is that the time to calculate real reflected light would astronomically increase the render time. If you look in a mirror that is reflecting light onto a surface (from the right angle), you can see in the mirror not only the scene it's reflecting but also the light it's reflecting (a mirror will cast a bright area as if the mirror itself is a light). But that then affects the reflection in the mirror, which then affects the light output which affects the.... well, I guess you see where I'm going. It's almost infinitely recursive. Nature does it almost intantaneously. Computers need a little (a lot of) time to catch up:-) Cheers, Diolma