https://bugs.winehq.org/show_bug.cgi?id=42347
--- Comment #2 from Henri Verbeet hverbeet@gmail.com --- (In reply to darkbasic from comment #1)
Not surprised at all, they think that only Nvidia exists.
Wine is a Free Software project, and Free Software drivers are its primary target. Wined3d developers use both the r600g and radeonsi drivers, and I personally have over a hundred commits in Mesa.
That doesn't mean there aren't any bugs in either Wine or Mesa, but comments like yours are extremely unhelpful and counterproductive.