Hi, Can we have Flip Y toggle for the normal map input?
Example: I am using substance textures (which are often regenerated) and I am jumping between different programs (Unreal Engine 4 and Rhino mostly).
UE4 uses DirectX format of normal maps and Cycles uses OpenGL format - therefore I need to have two formats of normal maps. Also If I would use Datasmith to bring the Rhino file into UE4 it would import a normal map used inside Rhino (inappropriate format for the UE).
I think, that for the users, a very convenient way to quickly deal with the different formats of normal maps would be use a simple Flip Y channel toggle - you can see it in e.g. Sketchfab.
There are already some tools to modify textures after import inside Rhino, such as brightness, contrast, etc. Normal maps are a bit different and need some extra care.