Whoops - I may have inadvertantly misled. The lace pattern is not procedural. I'm using a lace transparency map, as Latexluv suggested:

Quote - But others may like the idea of being able to add lacy trancparencies to the shader for items like frilly underwear.

I think I could come up with some sort of procedural lace, but it wouldn't be easy and it wouldn't be as good as real lace. In fact, the lace map I'm using looks to have been made with a procedure and could be improved upon. I'm just doing a demo and I don't have much in the way of lace maps to work with, as I'm not about to buy some just to show how to use it and I can't draw to save my life.

Still - how to connect the lace map to the nylon shader isn't obvious, at least to most people. So part 5 is about how to do that sort of thing.

KK is not missing anything, really. The basic idea is to modulate the density and opacity and shine and bump with the lace map. But how to modulate it, how to make one map work for bump and all those other things, which actually require a slightly different map but can be done with one map and some math, is what part 5 will be about.

 

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)