Principled BSDF reflection affects whole eye

Asmund · February 23, 2019, 9:37pm

I want the the reflections in the iris only and not the whole eye. I use a area lamp in the scene. Heres what I have now:

Felix_Kutt · February 23, 2019, 10:39pm

You need an additional mix shader, with your Principled shader and add shader as inputs and then use some input for mixing control as the mask. Could use vertex colors for that.

Asmund · February 23, 2019, 11:10pm

Thanks, I tried that but then it got like this:

Felix_Kutt · February 24, 2019, 12:23am

In the mix shader plug a mask into the grey input.

Asmund · February 24, 2019, 1:14am

What node is that? I cant find it in 2.7.

Felix_Kutt · February 24, 2019, 1:29am

The node plugged into the mix is math node, set to multiply. It is found in the converter group in the add menu. The nodes plugged into that are attribute and value found under input nodes.

Note that in the attribute node I have also specified the name of the vertex color datablock.

Asmund · February 24, 2019, 2:04am

It now controls the iris specular, but I still dont get that shine I want. What I try to get is this:

mal3Imagery · February 24, 2019, 2:49am

Ey bud. If you want a sharp reflection, the roughness property needs to be at least 0 or between 0.5 on your eye material. There also needs to be a light source for a reflection. Here’s my setup, very simple. A mix with a diffuse and a glossy.

Have fun

Asmund · February 24, 2019, 3:45am

Thanks, I have to try this tomorrow. Looks awezome

Asmund · February 24, 2019, 3:21pm

@mal3Imagery What source do you use as light?

Asmund · February 24, 2019, 5:59pm

Now I tried your setup, but I still dont get that reflection. What do I miss?