Hi Kent, I'm trying to make my own version of this shader, but I'm having trouble making it transparent.
Hi Kent, first of all, thanks so much for this series. This is my first time delving deep into materials and I genuinely feel that I'm starting to understand how blender materials work.
When I tried to make my own version of this shader, I ran into an issue. I was trying to mix the outline with a transparent BSDF, I found that I couldn't mask out the back faces from showing from the front. When I look at Suzanne from the back, as the pictures demonstrate, the front faces are still visible!
I've tried a Light Path node with Use Camera Ray, and I've tried dot-producting the Normal and Position vectors from the Geometry node, and using those as factors, but neither option seemed to change anything. I tried to use the Backfacing output, but that doesn't work for geometry that curves inwards.
How can I mask out only the faces that are behind others in relation to the camera, so I cant se the outline from things behind the camera? I have the file here: https://drive.google.com/open?id=1RzkupDSC3Zd7oUvyO_e3915qeOlRsNKb
Thanks in advance!