Font rendering issue on macOS - cut off characters

John Neffenger john at status6.com
Tue May 26 15:27:25 UTC 2020


On 5/25/20 11:47 AM, Philip Race wrote:
> Mmm .. it can't be the same bug even if the effect is similar.
> We don't use freetype on macOS, that's for Linux.

Right. I meant the same visible bug (severe color fringes).

> Can you check your display's settings ?

I'm using a Dell UltraSharp U2715H 27-inch monitor (2560 × 1440 px at 
109 ppi) on a Mac mini. The monitor's on-screen display shows "Input 
Color Format: RGB".

In any case, so far I've seen these color fringes only in JavaFX 
applications on my Mac.

> Isn't everyone seeing it just when they move to catalina ?

The color fringes may have shown up when macOS switched to grayscale 
anti-aliasing in macOS 10.14 Mojave. [1]

Does anyone have two Macs available for testing on both 10.13 High 
Sierra (with subpixel rendering) and 10.15 Catalina (without)?

> You might also want to check what color profile is set in System 
> settings -> Display -> Color.

That shows DELL U2715H as my active display profile.

John

[1] See the short section on "Font antialiasing refinements" at 28:03 in 
this video from Apple WWDC 2018:
https://developer.apple.com/videos/play/wwdc2018/209/?time=1683


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