Thanks for the mention! Yeah, it'll be here soon, but if you really want to know how it's done here's the shorthand.
For the mesh, scatter a bunch of tris based on the bounding box of the original sim, and make sure the UVs are built properly (the hard part)
For each texture, I'm making a grid which each face having the color information that I need and then rendering it out with Mantra with an ortho camera.
But yeah, if you can wait a little bit, it's not too far off. And if you already have access to 16 via the AUP drop me a line and I'll help you through it