Traditional wireframes can be rendered by taking a regular VrayMtl and sticking a VrayEdgesTx map in the Opacity slot. This usually looks fine for very simple objects. You can adjust the wireframe thickness in pixels or real world units (we think the default setting of 1 px looks best).
For complex objects, this transparent wireframe look can be very messy and non-readable. Remove the opacity map and use VrayEdgesTx map to combine the Diffuse color with a different colored wire.
This result is much more readable.
Comments
Great material, thanks for it.