I'm doing some experimenting with the mathematics of architectural glass. I'm building up a pretty good highly customizable glass material, that's really easy to use.

There is some additional math related to thin glass versus thick glass. Pretty interesting stuff. But we still have no caustics, and if you're using IDL, you must make the glass invisible to raytracing. As Miss Nancy has verified, Poser IDL does not "see through" any sort of glass, whether based on refraction or based on transparency.

Here is my first demo - plain simple window glass, but thin! Thin glass gets multiple internal reflections, which amplify the reflections.

(click for full size)

---

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)