Aaaaaand nevermind. -.- · 3:47am Mar 9th, 2018
While there are OpenGL to Direct3D wrappers available floating around the internet, they're all either for x86 processors or are too buggy to get Minecraft to launch. I got as far as the Minecraft Launcher before getting smacked with a faceful of errors. I guess I'll just have to wait and see if something better pops up sometime. In the meantime, at least I know a list of ARM-compiled things for WinRT.
:(