Hello guys, how are you doing?
I am currently trying to render eyes in Marmoset 4 and it is comepletely different than previous versions. I have read a bit about the subject and I understand that I need to render it in "Transmission" and not Transparency, but I still get some weird results. It's like the Translucent meshes have a black outline, almost as if there was a toon shader aplied. I have turned off the "Cast Shadows", because I had some weird results, but I seem to be stuck. I attach the render, so that you can see the black outline, and also the shader settings.
Thank you in advance.
![](https://us.v-cdn.net/5021068/uploads/editor/rj/x3b0ibm1tbss.png)
Replies
If you increase the Index of Refraction, you should no longer see the sky through the mesh. Water has an IOR of 1.333, so that should be a good setting for the wet layer around the eye.
Using a copy of the eye mesh with matching geometry may help reduce this sort of effect as well.