While developing a nine slice mesh component, I came across the issue that materials which are metallic are rendered as black on the procedural copy.
The normals are identical, as are the base color, metalness and roughness.
When the material is fully non-metallic, the visuals match.
Any idea what the matter is?
Gonna go ahead and give this a little bump - the issue is still unresolved.
Can you post screenshots of the material setups?
Oh, I didn’t get a notification that someone replied! My bad. The material is as basic as can be:
I still have no idea what’s causing the problem.
Do you have a reflection capture actor and a skylight on the level?
Edit: I’m blind, you do have. Have you tried updating reflections?
I have, to no avail.
That’s incredibly weird. Have you tried viewing the assets in a new map?
Just tried that, still as black as before. Is there a piece of mesh information that’s used for metalness that might be missing / is copied incorrectly in the procedural mesh?
FYI, the reflections visualization mode works fine.
What do your vertex normals look like? Are they also a direct copy or computed?
I copy them using &SourceMesh->RenderData->LODResources[0].VertexBuffer->VertexTangentZ(). I tested that previously using the world normal visualization mode (see OP), but testing it now using PixelNormal in the material, I see that something’s wrong:
I got that way of retrieving the vertex normal data from this answer, but maybe it’s not correct, or I’m doing it wrong. Ideas?
Did you ever find a solution to this?
I did, but I can’t remember what it was. I reckon there was something wrong with the way I copied the normals, judging by my last post. I’d have to check out the source code to see how I ended up copying the normals, but I’m on vacation for two weeks.
