I came up with a design I found satisfactory for the stained glass blocks. I’ve yet to design the panes but they’ll look pretty similar.
I noticed some shaders would override the base texture and/or normal map and provide their own hardcoded implementation for stained glass (possibly derived from water/ice) so the outcome may vary quite a bit from one shader to the other.
Here I made some screenshots with SEUS PTGI and Continuum 2.0.2.








