eaa3dd0cd3
Similar to 93be6baa9c.
It doesn't make sense to store the type as part of the request
since we upload any generic attribute, and the vertex buffer
type is just chosen depending on the attribute's type in the
geometry anyway.
The code in `mesh_cd_calc_used_gpu_layers` is unfortunately
still way too complicated to remove the custom data layer lookup,
but this gets us one step closer.
Pull Request: https://projects.blender.org/blender/blender/pulls/138791