OpenSCAD + Manifold: Rendering success stories

[geoffder]

Now that Manifold has been adopted by OpenSCAD, I thought it would be nice to have a place here to share rendering success stories. For myself, I was excited to see how much improvement there would be in the rendering of models generated by my dometyl keyboard generator, so I went and grabbed the latest snapshot (OpenSCAD-2023.03.21) and rendered my splaytyl (9.22mb generated scad, largely polyhedrons) model through with fast-csg, then with the manifold feature enabled for comparison (closing between renders to clear the cache).

With fast-csg:

Total rendering time: 0:01:02.179
Top level object is a 3D object:
   Facets:     379798

With manifold:

Total rendering time: 0:00:05.406
Top level object is a 3D object:
   Facets:     207614

Pretty nice 11x speedup!