Request to have a toggle to flip from Smoothness to Roughness #50
Description
The game engine i'm using uses Roughness instead of Smoothness, so if i create Smoothness maps with this tool i have to open them in GIMP and invert the color. Or, if i'm just converting some free online PBR textures to have RMAO map, the preview in Materialize will have the opposite level of glossiness in the preview as it will in my game. So it would be a handy an appreciated feature to have a way to flip it the way we have a button to flip DX to OGL normals.