What's the story with OpenGL on macOS? I know it is abandonware in favor of Metal but are there reasons Apple will at least keep it in the OS / drivers for foreseeable future? Do any of the ANGLE type things help when they finally take it away?
AFAIK ANGLE (and MoltenGL) only provide GLES2.x and GLES3.x over Metal, so out of the box those wouldn't be very useful for providing desktop-GL compatibility.
Apparently Zink on top of MoltenVk on top of Metal works, but that looks like a Jenga tower of emulation layers.
Ideally, Apple would rewrite their OpenGL framework on top of Metal (if it hasn't happened yet), and keep that working at least into the 2030s.
I thought Wayland implementations considered one of those a base requirement.
My recommendation is to use Wayland, and to play serious games on macOS (although such games are not available on Linux AArch64 anyway...)
However, as feature_list in src/vrend_renderer.c shows, some features are unavailable and cannot be emulated. It is good enough but not perfect (and I think it is reasonable.)