OpenGL still lacks any kind of control for the main output surface separate from its device context, unlike D3D's clear separation of device context and "swap buffer" (bad name, I know).

Q15. When I run Femgv on my PC using OpenGL the graphics area is black and I can't see my model? A: The way OpenGL draws to the screen is influenced by the choice of "pixel format". A pixel format ...

Apple's support in macOS tops out at OpenGL 4.1, announced in July 2010. Developer Alyssa Rosenzweig wrote a detailed blog post that announced the new driver, which had to pass "over 100,000 tests ...