In the VSS shader, you can't assume I put the correct bump strength in for every possible bump map you might use. You have to tune it, because some bump maps only have a varition of 10% (45 to 55 gray)  and others 50% (25 to 75 gray). That's effectively five times more bump at the same numerical setting in the shader.

 

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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)