Maya MaterialX Standard Surface, Normals not rendering with UsdUVTexture

V-Ray V-Ray for Maya Issues
1

Is this a limitation of using the ND_standard_Surface_surfaceshader with MaterialX and V-Ray for Maya?

I tested the normal map plugged into the base color, to make sure it’s mapped correctly and displaying in base render, looks correct.

I also tried using the BRDFVRayMtl, and this works, the normal map appears more or less as expected. But it seems many other properties like Reflect Glossiness don’t work as expected.

Are there any resources or reference you can point me towards to understand the proper setup?

2

Make sure you are reading the normal map as a vector 3 - not a color 3.
That is my guess why is not working for you

3

There’s a docs page about this here.