[Webkit-unassigned] [Bug 192582] New: Blurry text on HiDPI screens with 3d transform

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=192582

            Bug ID: 192582
           Summary: Blurry text on HiDPI screens with 3d transform
           Product: WebKit
           Version: Safari 12
          Hardware: Macintosh
                OS: macOS 10.14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: roland at nextendweb.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 357040

  --> https://bugs.webkit.org/attachment.cgi?id=357040&action=review

Safari 12 HiDPI screenshot

https://jsfiddle.net/y9k64ush/1/

The both text on the previous example looks fine on iPhones, iPads,normal DPI Safari, Chrome and Firefox. The problem is that the top text is blurry on HiDPI Safari (retina iMac for example)

To reproduce the issue on normal DPI screen:
Terminal:
sudo defaults write /Library/Preferences/com.apple.windowserver.plist DisplayResolutionEnabled -bool true
Then System Preferences -> Display and choose the HiDPI at half resolution: https://cdn1.tekrevue.com/wp-content/uploads/2015/08/hidpi-mode-system-preferences.png

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