yuzu's theoretically already done the heavy lifting...Vulkan has been the focus for a while. i wonder if yuzu would break MoltenVK in terrible ways, or if it's mostly compatible
I tried to port Yuzu to MacOS. There's still an old PR for it somewhere in the GitHub. I got some 2d games booting.
The main problem is simply that none of the core devs have a mac!
The other big hurdle is the lack of some shader types on metal. For example, geometry shaders are used in Mario, but not available. They'd have to be emulated with compute shaders.
The CPU emulation side is pretty easily compatible.
