Using a vertex blend material on top of a mesh with a normal map?

jordank95

Im working on this Artstation challenge and I'm trying to figure out how to use a vertex blend shader on top of a baked normal map on a mesh?

I have some old splintered wood that I sculpted and baked. Now, in UE4 I want to have my tiling wood/moss/wet wood material on top of this worn wood mesh that has the normal map already on it so I can vertex paint. I can't seem to find any tutorials on this process, but I'm also not quite sure what I'm looking for in general. So searching has been a bit difficult. Does this need a second UV channel? Do I need to create a material function for this? A bit confused here. Thanks

Obscura

Use the "blend angle corrected normals" node to blend the tiling normal with the baked one.

cupsster

Normal map have nothing to do with vertex colors, they are completely independent of each other. I would suggest you to take your time and just look into official documentation (looks like you skipped this step). Completely unrelated to your issue @Obscura made good mention about blending of extra "detail" normal on top of other normal. You should use that material function to do that.