Any capable of DirectX 12, but only gets OpenGL 4.3 drivers or similar on GNU/Linux.
Or my AMD Brazos one on a Linux netbook, DirectX 11 class, which only gets OpenGL 3.3 drivers.
Regarding OpenGL on macOS, I don't care, that is what rendering engines are for, and all relevant ones already support Metal 2.
What GPU is this? I don't know of a DX12 device which lacks OpenGL 4.5 support in a stable release of Mesa (or the blob, in the case of NVIDIA, since they are uncooperative with regard to firmware).
> Regarding OpenGL on macOS, I don't care, that is what rendering engines are for, and all relevant ones already support Metal 2.
Sure, if you're running only games, and those that were made before 2012, and after 2017, then that works fine. For an example of something that does not currently use Metal (2 or no 2): any web browser (to my knowledge, including Apple's own, except as a backend for the WebGPU prototype), professional graphics application, or visualization utility. The shader compiler is still subpar, even in Metal.
> Or my AMD Brazos one on a Linux netbook, DirectX 11 class, which only gets OpenGL 3.3 drivers.
IIRC Brazos in that range would be... Radeon HD 6330M, and you're right, that should support GL 4.4. If you're running Mesa from 2016 or later, it should have 4.1 (and most extensions, except compute shaders, up to 4.4), if you run AMD's blob you can probably get 4.4 on it today. Work on drivers for pre-southern-islands devices is slow these days, but anything after SI has full certified OpenGL 4.5 on Mesa along with every extension in in 4.6 except for SPIR-V loading (coming soon), and the performance is better in basically all cases than it is on Windows, or with the proprietary drivers on Linux (though for now you'll need the proprietary drivers for some features like FreeSync, which is unfortunate but oh well).
I assume what you saw was the Nouveau driver, which is enough to have you up and running to be able to download the proprietary ones using GUI.
In fact, my graphics card (the cheapest to support Vista) is the only thing I haven't upgraded in the past 5+ years. And it was from eBay, used.
My graphics card supports the native UI elements of Windows.
My users don't want a "Save as" dialog with life-like water refraction and fog, rendered at higher FPS than their monitor.
Then you are in luck; even Intel GPUs under Linux do support OpenGL 4.5. 4.6 is in the works, the only missing part is the SPIR-V support and I don't suppose you need that for fluent or material design.