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Re: 23.0.60; Heavy display problems with new font backend


From: Jason Rumney
Subject: Re: 23.0.60; Heavy display problems with new font backend
Date: Sat, 19 Apr 2008 14:50:36 +0100
User-agent: Thunderbird 2.0.0.12 (Windows/20080213)

Tassilo Horn wrote:
  - quite often a "w", "k", "S" or "r" looks bold although it shouldn't
  - "m" has a green shine between its legs
  - fonts aren't sharp as if subpixel hinting was disabled

The attached pics fonts{1,2,3,4}.png show some of those minor display
problems.

I only see the first problem. Which suggests that the subpixel antialiasing is correct for my display but incorrect for yours, as the letters all look sharp for me, without any more color artifacts than you'd expect from subpixel antialiasing.

While trying to find some more of those display problems I opened the
attached UTF-8 testfile and found a major display bug.  The pics
v-with-dot.png and v-with-dot2.png show it.

These seem to be problems in the composition rules for those modifiers. Things probably don't look much better with the old font code either.

Additionally in that file most greek chars aren't antialiased.

Only some fonts support antialiasing. If you try different greek fonts, you might find one where it works.





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