GPU Curve Mapping OR UV mapping question

[logan683]

Hey, guys.

Just wondering if anyone knows how to work with the mapping for beveled curves and the GPU RT engine. The Repeat U works fine with CPU. I assume this is another GPU limitation, but if not, am I implementing something wrong? Is there a workaround?

I'm trying to map cable normal/displacement maps and the stretching is undesirable. Adding more points along the curve does not help as it maps the entire curve to the 0-1 space, so the longer it gets the more distortion there is.

Using an array modifier with a small mapped cylinder definitely produces undesirable performance issues due to vert count going INSANE when enough iterations are added to the curve to allow smooth bending.

-OR-

If I convert a curve to a mesh, how can I repeat the texture along the mesh without mapping every single section? For example, a 1/4" cable over 10' makes a lot of faces to map.
https://www.artstation.com/artwork/03x6w
The last picture shows how only part of the mesh has unique UV space. What am I missing? I haven't had much luck with Google.

Thank you.

[yolov]

Can you share a scene that we can use to run some tests on? It will help us quickly get to the bottom of this.

[JuhaW]

I think your problem is simple not enough knowledge of basic unwrapping, after converting curve to mesh try in edit mode, U>Follow active quads. all faces selected and one face active.