3ds Max RTT Normal Map Green Channel Flipped?

Mark Dygert

So a friend of mine ran into a weird issue with 3dsMax when rendering Normal Maps. It was flipping the green channel for one of the UV pieces.

Taking that piece into PhotoShop and inverting the green channel fixed the issue but I was wondering if anyone has run into that before and is there a way to force 3dsMax to render it correctly?

IronHawk

I get this when some normals on the low poly object are facing inward.

Mark Dygert

ahh makes sense, thanks!