Re: NSBezierPath to NSImage with subpixel rendering
Re: NSBezierPath to NSImage with subpixel rendering
- Subject: Re: NSBezierPath to NSImage with subpixel rendering
- From: "Ken Ferry" <email@hidden>
- Date: Wed, 9 Jan 2008 15:23:04 -0800
> However, there are still long-standing bugs in the LCD antialiasing mode
> which cause light text on dark backgrounds to become extremely "bold;"
> they look radically different from CRT antialiasing mode. (In terms of
> font weight, Windows looks much more like Apple's CRT mode, with or
> without ClearType.) You can see this most easily on web sites which use
> dark backgrounds, such as www.blizzard.com. The radar's been filed for a
> few OS generations now… I guess it wasn't considered a major problem.
Not fixed != not considered to be a problem.
We did attempt to address this in some restricted cases for Leopard.
The LCD text rendering algorithm still produces less than ideal output
when rendering text onto a dark background, but when AppKit has enough
information to (reasonably cheaply) know that that's what's happening,
it uses some private tweaks to advise CG to use a slightly different
algorithm.
In particular, when text is drawn via a cell, and the cell's
interiorBackgroundStyle is NSBackgroundStyleDark, the LCD rendered
text will not look quite so bold.
Eyeball, say, text in selected rows in Mail.
Ken Ferry
Cocoa Frameworks
On Jan 9, 2008 9:28 AM, John Stiles <email@hidden> wrote:
> Jonathon Mah wrote:
> > Personally, I can't stand the color fringes on text (on my MacBook),
> > so I have text set to normal anti-aliasing.
> I used to strongly share this opinion, but I've found that as display
> DPIs get higher and higher, it becomes less of an issue. I used a 22"
> Cinema Display for years and years, and with its low DPI, the color
> fringes really did stand out, but on a MacBook Pro 15" screen, you can't
> really see them at all.
>
> However, there are still long-standing bugs in the LCD antialiasing mode
> which cause light text on dark backgrounds to become extremely "bold;"
> they look radically different from CRT antialiasing mode. (In terms of
> font weight, Windows looks much more like Apple's CRT mode, with or
> without ClearType.) You can see this most easily on web sites which use
> dark backgrounds, such as www.blizzard.com. The radar's been filed for a
> few OS generations now… I guess it wasn't considered a major problem.
>
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