Zanzo opened this issue on Apr 08, 2013 ยท 5 posts
bagginsbill posted Mon, 08 April 2013 at 9:46 AM
Because skin is mostly red, so the amount of precision in the red channel is greater than the other two. The goal is to detect body and facial hair (which generally is darker than the skin) and not apply skin-style specularity there. This is not a perfect strategy and is only included because the vast majority of skin textures do not include a skin/hair map.
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)