TrekkieGrrrl opened this issue on Jul 25, 2010 · 16 posts
bagginsbill posted Sun, 25 July 2010 at 2:15 PM
The button displacement map has gray values in it to indicate height. For purposes of controlling things, we want a pure black-white mask, except at the button boundaries where we want a little anti-aliasing.
The easiest way to make a mask from the displacement map is to use a Math:Clamp node. The Clamp node Value_1 is multiplied with the connected node. Then the result is clipped - below zero is zero - above 1 is 1. In between, no change.
I'm using a multiple of 2. This takes the gray values in the middle of my button displacement map and pushes them above 1. The Clamp then eliminates them. Depending on the nature of your displacement pattern, you may have to use higher multiples.
When interpreted as numbers, black is 0, and white is 1.
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)