Quote - Taking this idea a bit further, since one can embed bump information in a colour map, I wonder if one can extract bump information from one of the colour channels of a colourMap. I know, I know: bump is a completely different sort of information that what one would be able to extract from a colourMap, but might it be because there's just too mch, and it's the wrong way around, like eyebrows, for instance. I guess I'm probably way off, but if for instance one could pinpoint the colour of say the eyebrow with component, then reverse it and use it as bump?

Probably not making any sense...

impossible. because you dont have the control how much bump is on that area. even if you would have eyebrow at the same direction like skin.....you still wouldnt have the amount of bump correct. you need full control how much bump is on the skin,eyebrow,nose . then you also need wrinkles. wrinkles are not part of the color texture.

 

my advice is to paint a seperate texture for bump. the difference is not small ....but HUGE.