Although the CellRender with edges on does give a front surface only wireframe effect.
I have combined the editor view wireframe (not anti-aliased) with the CellRender to get a unique "DepthWireFrame" effect.
First: CellRender B/W with Edges turned on.
Then: set General settings-Views-Background to black
Turn off grid. Render a wireframe in editor mode at twice the final size.
This way, when you scale it down, you get a semi anti-aliased wireframe. It
is not ideal on it's own, but works well for what comes next.
Composite.
EditorView Wireframe - Invert, blur to your taste, and level adjust. Then
scale down.
CellRender - Set to multiply on top of EditorView Wireframe.
Chapter too?
In the last image, the blurring of the EditorView Wireframe results in a softening of the front CellRender lines as well. This was because there is redundant information in the EditorView Wireframe (the front surface mesh that is depicted by the CellRender). It's subtle, but it was bugging me. I just figured out a fix.
This is an EditorView Wireframe:
I don't want the mesh on the front of the object. This will be depicted much
cleaner by the CellRender lines.
Turn on BackFaceCulling:
Reverse the normals of the object, and it effectively becomes FrontFaceCulling:
Bingo.
So now I can blur the back surface mesh without effecting the front mesh. That's better:
JeremyW