Thick lines with 3d-tiles

Is there any way to render thick lines using 3d-tiles?

For example, maybe creating 3d-tiles .b3dm with line primitives and then using custom shader? Could that work?

Or, would vector-tiles offer a solution for this?

For now we have been able to render thick lines using Polyline primitives but they are not from 3d-tiles…

I think the easiest thing might be constructing some kind of polygon-based line, that seems to be the way you would do it in a glTF model (see discussion here:, so that way it would work wherever 3D Tiles are supported and wouldn’t require custom client shaders.

I do think having robust support for lines is one of the goals of the vector format in 3D Tiles that’s still under development.

What kind of project are you working on?