Forum: Poser - OFFICIAL


Subject: in search of a plain clear glass shader...........

3anson opened this issue on Dec 29, 2011 ยท 16 posts


bagginsbill posted Thu, 29 December 2011 at 12:57 PM

Everybody who wants to understand Fresnel effect must read this until it is memorized.

http://en.wikipedia.org/wiki/Fresnel_equations

Of particular note about this latest point:

Quote - For common glass, the reflection coefficient is about 4%. Note that reflection by a window is from the front side as well as the back side, and that some of the light bounces back and forth a number of times between the two sides. The combined reflection coefficient for this case is 2R/(1 + R), when interference can be neglected


Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)