I am misunderstanding your comment.
How is Apple hardware in any way constrained by highly optimized versions of a graphics hardware library specifically for that hardware and an operating system optimized also for the hardware?
How is Apple hardware in any way constrained by highly optimized versions of a graphics hardware library specifically for that hardware and an operating system optimized also for the hardware?
It annoys me that Apple picks a non-integer scaled resolution by default, but HiDPI 2x looks great on a MacBook Pro and on 27" 5K and 32" 6K. If only there were more, and more affordable, monitors in those two spaces...
Apple's Game Porting Toolkit is tantalizing (as is Crossover) but Proton seems to work really well (at least natively on x86.)