Sorry Loop, but I have not understood this!
When painting with textures in "earthscuptor" the rgb-blendmap is created as follows:
(from left to right) texture in slot1 creates red in the rgb-blendmap, slot2 = green, slot3 = blue, slot4 = black.
After you saved your terrain, you will find the highmap, the blendmap and the shadowmap in the "Maps" folder in the directory where "earthsculptor" is installed.
where is the rgb map? you mean this program create a rgb map? alone? and does it know where do you want the grass the stones and the other things? show me how.

cia
salva