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Re: Text anti-aliasing on the Mac

From: Robert O'Callahan <robert@ocallahan.org>
Date: Wed, 3 Oct 2012 00:34:42 +1300
Message-ID: <CAOp6jLZsafSMXPZZwTsr7QwxBGS-jgrMadQLnHmx0MZyMBWUmw@mail.gmail.com>
To: "Tab Atkins Jr." <jackalmage@gmail.com>
Cc: www-style list <www-style@w3.org>
On Tue, Oct 2, 2012 at 10:00 AM, Tab Atkins Jr. <jackalmage@gmail.com>wrote:

> Rik privately asked for some images of this in effect.  Try this
> Chromium bug: http://code.google.com/p/chromium/issues/detail?id=152304
>  The "before" pic shows grayscale anti-aliasing, the "after" pic shows
> LCD anti-aliasing, both on Mac.  It should be pretty obvious that
> switching between the two as opacity transitions from .99 to 1 would
> be undesirable.

We do have some techniques to mitigate this. Which technique gets used
depends on the details of the content and whether GPU compositing is being
used (which on Mac depends on which version of MacOS and which drivers are

“You have heard that it was said, ‘Love your neighbor and hate your enemy.’
But I tell you, love your enemies and pray for those who persecute you,
that you may be children of your Father in heaven. ... If you love those
who love you, what reward will you get? Are not even the tax collectors
doing that? And if you greet only your own people, what are you doing more
than others?" [Matthew 5:43-47]
Received on Tuesday, 2 October 2012 11:35:15 UTC

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