OSX doesn't have HighDPI support. They just scale everything and present a lower resolution. Go ahead and actually try to user a high resolution on your Macbook. I know I did and then I tried to set things to autoscale ( like gnome 3 will do right out of the box ) since most of the time I only want a few applications with lots of screen real estate and I want the others to have larger font. I gave up and just run OSX at the lower resolution and save the high pixel count for when I am in Linux.
> OSX doesn't have HighDPI support. They just scale everything and present a lower resolution.
This is exactly what I'm referring to as High DPI support. Maybe it's not the solution you'd prefer but it is a solution. By contrast, Linux still has a lot of fit-and-finish issues with high-DPI, even in Gnome 3. I would believe that they're going about it in a better way on the backend, but the fact is OS X is the only one really delivering at the moment.
