EClark1894 opened this issue on May 01, 2020 ยท 33 posts
bagginsbill posted Thu, 07 May 2020 at 8:59 AM
If I decrease the index of refraction, as here I lowered it to that of water instead of glass, then only SOME of the surfaces are doing total internal reflection. The back diagonal surface angle of incidence is now below the critical angle. It is allowing some light to go through to the other side. We can now see somewhat straight through the prism, via refraction.
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)