[randcraw]

Does this imply Apple is planning to continue support for OpenGL informally/externally, the way that X Window support is through xQuartz, perhaps via an external Mesa-based library?

And maybe the same informal/external support model for OpenCL?

Performance will be diminished but not extinguished.

[thdoeunt34stnoe]

FWIW, they've only deprecated it, meaning no new updates. They haven't removed it from the platform. Furthermore, desktop OpenGL seems like it's dead anyway, given that Vulkan has replaced it.