Poor performance with OpenGL Renderer on Apple M1 machines

MacOSX and iOS
18

Just a little update, there were two more changes after the November fix (above) to fix potential performance issues.

15 Dec 2021
OpenGL: Avoid querying the native view hierarchy from a background…
15 Dec 2021
Thread: Update macOS thread priority calculation

The current state is that the teapot demo (latest tip) still doesn’t run smoothly on Apple M1 Max at all (MacBook Pro 14 M1 Max)

Maybe the patch from here should be generally build into the Demo, so it is more easy to create comparable measurings.

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