scene:shading

(scene:shading v mode)

:solid draws the lit triangles, :wireframe the edges alone, :both (the default) the edges over the triangles. Both meshes are on the GPU already, so the mode costs nothing to change. Part of the scene package, a 3-D viewer for geom solids written in rontolisp over metal and appkit and loaded on first use: macOS (java -jar, the rontolisp binary, or a compiled .class / .jar; never a .wasm), with a display. See the solid modeling guide.

CL-USER> (scene:shading *v* :wireframe)
NIL