odf opened this issue on Oct 27, 2008 ยท 13981 posts
bagginsbill posted Tue, 08 September 2009 at 12:32 PM
I don't think that giving the iris some convexity (some!) is quite as bad as putting the iris texture on the cornea.
There is a big difference when the highlight appears lifted from the iris.
Work the math - compare a refractive cornea and flat iris versus a transparent cornea and a somewhat convex iris. There's very little difference when viewed near straight on. There is a big difference when viewed from the side, but the price to pay for that refraction is a bit much in some circumstances.
If we had an iris-convex-concave morph, you could just dial the scheme you want to use, and then set up the cornea shader to match the strategy you've chosen - transparency versus 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)