How can you simulate a retina display (HiDPI mode) in Mac OS X 10.8 Mountain Lion on a non-retina display?
- Search for, download, and install Apple's free Additional Tools for Xcode 8 (for previous Xcode releases search for Graphics Tools for Xcode according to your version).
Note: free Apple Developer account required. - Launch Quartz Debug application.
- Go to menu:
Window ---> UI Resolution. - Check Enable HiDPI display modes.
- Quit Quartz Debug.
- Open System Preferences.
- Select Displays icon.
- If using multiple display, select the configuration window on the display you wish to simulate HiDPI mode on.
- Under
Resolution:, select Scaled radio button. - Find a desired resolution postfixed with
(HiDPI) and select it. - Your display is now running in HiDPI mode, simulating a retina display.
Source: High Resolution Guidelines for OS X
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