Mac retina support - how to enable

Where should I enable retina support on the Mac? It doesn't seem to work out of the box. All icons are pixelated. I've tested with Unity 5.6 and 2017.1 betas.

 

https://docs.unity3d.com/Manual/UpgradeGuide54.html

Specifically, the "Supporting Retina screens" part.

 

Thank you, but that doc applies to my custom editor views isn't it? I'm talking about stock Unity editor views like the bar will all buttons like Play/Pause etc.:
https://cl.ly/3i0p0c250f2X

This line returns "2":
Debug.Log(EditorGUIUtility.pixelsPerPoint);

I'm not sure why I'm not seeing sharp icons :-/

 

Since 5.4 the Editor has supported Retina displays.

It seems to be for only some icons though. For example, here's the 5.4 blogs post: https://blogs.unity3d.com/2016/07/28/unity-5-4-is-out-heres-whats-in-it/

In it they share this image:

Where stuff like the Inspector Icon, the inspector lock icon, the background color pick button, documentation and settings buttons are blurry. So it seems to apply to most of the icons, but not all.

 

I see, thanks for this info. That seems like a weird move to leave out some icons behind.