Normals Shade Differently on opposite side

neverwander

I'm having some trouble with the normals on my wall. The one on the right shades correctly, but when I rotate the object 180 degrees, the shading is reversed. Anyone know how to correct this? FYI, normals baked in Xnormal, rendered in UDK.

BARDLER

Could you post your low poly and normal map?

neverwander

Here's the low and normal map. Trying to keep this fairly low poly. Empty space on maps will be filled in later with other object.

BARDLER

Check your normal direction of the faces because they might be pointing the wrong direction.

neverwander

That fixed the left-right shading issues, but the shadows for the circles are now coming from the bottom when the light is above :P

neverwander

Inverted the green channel and that fixed it. My xnormal settings must have gotten mixed up somehow

Adij

There is option for inverting Y-channel in UDK - maybe you have it switched on?

neverwander

Oh yeah, I had forgotten about that. Well, I fixed the settings in Xnormal, so I shouldn't have any more issues