Edit: just FF'd to the 3d cube bit.. nm. We can't do that without WebGL. That's what I get for not watching the entire video.

Not sure what your getting at. The Wayland demo looks like it could be completely recreated with existing CSS3 3D transformations.

Here's a similar example in a browser using HTML and CSS3. These transforms can be used on anything you can fit in a DOM element: https://www.webkit.org/blog-files/3d-transforms/morphing-cub...