I am experiencing an issue with my eye setup. As you can see in the image below, I have a glowing rim around the edge of the eyeball in the transmission pass. The caruncle geometry overlaps the eye, and both have transmission enabled.
Both the caruncle and sclera materials are using the aiStandardSurface. Both have Opaque set to Off, and both are using Transmission. The head, caruncle, and eyes all are part of the same SSS Set Name as well.
Here is the shader setup for both caruncle and eye:
As you can see, both are very similar, the only difference being that the caruncle has a bit of control over the transmission depth. Disabling this and matching the eye still gets the same results.
Any ideas how I can remove this weird rim light on the transmission pass? It appears only when the eye is in shadow, as the other eye, in light, doesn't have the rim visible, as seen here:
Lastly, my render has little red dots all throughout, they don't appear in any AOV, only in the beauty pass. Clamping values doesn't remove them. Any ideas there?
I am running the latest Arnold release, 18.104.22.168 - f5753062, in Maya 2018.