Comment by easyThrowaway

I mean, theoretically they could backport the D3DMetal wine driver from the Game Porting Toolkit. Also I remember there was some early preliminary work done on stock wine a few years ago.

Honestly right now there is so much overlapping between all the wine "flavors" and forks available (Stock wine, Crossover, Proton/Proton-GE/Wine-GE, Game Porting Toolkit, winevdm, probably a few more I'm forgetting right now) I'm not entirely sure how many features have been independently implemented already multiple times.