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From: "Jan Djärv" <jan.h.d@swipnet.se>
To: Eli Zaretskii <eliz@gnu.org>
Cc: mituharu@math.s.chiba-u.ac.jp, emacs-devel@gnu.org
Subject: Re: Display performance degradation
Date: Sat, 02 Jan 2010 15:31:20 +0100	[thread overview]
Message-ID: <4B3F58B8.9040702@swipnet.se> (raw)
In-Reply-To: <83oclceoq0.fsf@gnu.org>



Eli Zaretskii skrev 2010-01-02 12.21:
>
> Anyway, is the call to lookup_named_face expensive, for all the calls
> but the first one which use the same face symbol?  If it is cheap,
> then perhaps this is a non-issue.
>

All calls have the same cost.  What they do is to clear properties in the 
font.  These properties later on gets restored again.  But the distinction 
between user specified font properties and matched font properties gets lost, 
so what the user specified initially is lost.  This makes re-applying the font 
when some parameter (dpi, hinting etc.) has changed impossible.

I'm trying to address this by another mechanism.

	Jan D.





  reply	other threads:[~2010-01-02 14:31 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-17  2:49 Display performance degradation YAMAMOTO Mitsuharu
2009-12-17  7:39 ` Jan D.
2009-12-17 20:08   ` Eli Zaretskii
2009-12-18 16:47     ` Jan Djärv
2009-12-18 21:20       ` Eli Zaretskii
2010-01-02 11:05         ` Jan Djärv
2010-01-02 11:21           ` Eli Zaretskii
2010-01-02 14:31             ` Jan Djärv [this message]
2009-12-17 12:24 ` Kenichi Handa
2009-12-17 14:43   ` Chong Yidong
2009-12-18  3:53     ` Miles Bader
2009-12-17 16:42   ` Jan Djärv
2009-12-18  3:06     ` YAMAMOTO Mitsuharu
2009-12-18  5:46     ` Kenichi Handa
2009-12-19  2:56       ` YAMAMOTO Mitsuharu
2009-12-19 10:00         ` Andreas Schwab
2009-12-20  6:27           ` YAMAMOTO Mitsuharu
2009-12-21  1:17         ` Kenichi Handa
2009-12-21  2:11           ` Miles Bader
2009-12-21  2:31             ` Lennart Borgman
2009-12-21  3:05               ` Miles Bader
2009-12-21  3:08                 ` Lennart Borgman
2009-12-21  3:44                   ` Miles Bader
2009-12-21  3:54                     ` Lennart Borgman
2009-12-21  4:16                       ` Miles Bader
2009-12-21  4:18                         ` Lennart Borgman
2010-01-06 19:46 ` Jan Djärv
2010-01-07  8:26   ` YAMAMOTO Mitsuharu

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