I double checked, and our rendering library _does_ partially supports DX11, as well as Angle, which lets you run the GLES3 backend on top of Angle on top of GLES2/DX11. They tend to be fairly buggy and incomplete, though. Arguably only usable for simple 2D games.

There's been no real demand or contributors to improve it, but it's open source so there's no reason you or anyone else could stamp out the bugs https://github.com/gfx-rs/wgpu#supported-platforms.