Full screen rendering and switching resolution with Screen.SetResolution does not work when using Metal or GLCore with Mac Player. When the app is switched from windowed to full screen it's either not scaled properly (Metal) or not rendered at all (GLCore).

Steps to reproduce:

1. Build and run OSX_WindowedFullscreen_testProject.zip (42.8 KB) with Metal and/or with GLCore
2. Switch the app to full screen and try switching resolutions:
- the view is never scaled to screen size when using non native resolution with metal.
- switching from windowed to full screen with GLCore breaks rendering.