I Have seen he more on heights and less on heights tool for per-pixel paining, however i can not see what it does, if i use a value of above zero in the height scale box, it paints if the value is below it does not. could someone tell me how this tool works and how to use it?
as for the more in cavity and less in cavity brush options, i want something that does the same but in less detail.
An example of when i would want to do some good dry brushing is painting an old medieval stone wall (http://liamtart.com/wp-content/uploads/2013/04/alpine_rockwall_04.jpg)
- i would want some dark low opacity color in the deep parts of the wall (where the stones would have shadow if you baked it) and maybe some green tundra/lichen and light color on the sticky out parts of the stones of the wall with a little more specularity.
this is the sort of result the dry-brushing would give
http://liamtart.com/wp-content/uploads/2013/04/alpine_rockwall_03.jpg
Can anyone suggest what i should do?