This came to my mind a couple of days ago and it's not so hard to implement.  
To add "Round Edges" option to the material options. Or create a map specially to add it to the bump map, like "Vray Edges Tex" additioally this may work for create Wireframe renders.
Cheers.
					To add "Round Edges" option to the material options. Or create a map specially to add it to the bump map, like "Vray Edges Tex" additioally this may work for create Wireframe renders.
Cheers.

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