Boni opened this issue on Jun 30, 2014 ยท 61 posts
bagginsbill posted Tue, 01 July 2014 at 9:17 AM
I have not posted an eye setup on my site.
I have in various threads, but I have problems with a generic solution.
Different figures have wildly different arrangements. (Eyesurface that overlaps everything and includes cornea, eyesurface that overlaps everything as well as a separate cornea surface, no eyesurface just a cornea, etc.)
The luminance level on the sclera is wildly different on one texture set versus another, so tuning to match what real eyes look like is always an exercise on your part which requires that you fully understand how to build and tune a shader.
People differ on whether they intend to go for max realism or they just want quick and dirty and they're willing or even enthusiastic to use textures with burned-in highlights. These look incredibly stupid when you use scatter and real reflections.
People do not pay attention to the environmental factors - your light source(s) had better be tuned for realism (use my light meter first) and if you want good looking reflections based on realistic reflection values (Fresnel!), you need HDRI imaging or real props that glow at HDR levels. (Much greater than 1)
Poser transparency lets light through a cornea/surface onto the iris. Poser refraction does not. Realism requires refraction. Therefore you get little or no light on the iris. Compensations require understanding how to self-light the iris just enough to deal with this. Or require crafting a cornea as a separate actor (as I did with the BB eye) so that you can turn off shadow casting on from the cornea.
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)