From: Adrian Robert <Adrian.B.Robert@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: Analysis of redisplay performance on Windows
Date: Mon, 28 Jul 2008 03:06:16 +0000 (UTC) [thread overview]
Message-ID: <loom.20080728T030223-98@post.gmane.org> (raw)
In-Reply-To: 8763qqiz6j.fsf@stupidchicken.com
Chong Yidong <cyd <at> stupidchicken.com> writes:
>
> Jason Rumney <jasonr <at> gnu.org> writes:
>
> > As I suggested in my earlier email, new functions in the
> > font backend interface to select a font for working with and releasing
> > it when done, would help, as we could then skip doing this in
> > functions like encode_char and text_extents.
In the NS font driver (nsfont.m) these two functions cache info
for each font by block of 256 (stored in nsfont_info -- nsterm.h).
This made a significant different in rendering speed when I
implemented it, and the memory cost is not high unless lots of different
char ranges are being rendered in lots of different fonts. Moving this code
up to font.c would be another option to consider.
next prev parent reply other threads:[~2008-07-28 3:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-27 3:07 Analysis of redisplay performance on Windows Chong Yidong
2008-07-27 9:55 ` Jason Rumney
2008-07-27 20:56 ` Chong Yidong
2008-07-27 21:30 ` Jason Rumney
2008-07-27 21:40 ` Chong Yidong
2008-07-27 21:53 ` Jason Rumney
2008-07-28 1:18 ` Chong Yidong
2008-07-28 3:06 ` Adrian Robert [this message]
2008-07-28 5:03 ` Chong Yidong
2008-07-28 7:04 ` Jason Rumney
2008-07-28 2:11 ` Kevin Yu
2008-07-28 4:24 ` YAMAMOTO Mitsuharu
2008-07-28 9:48 ` YAMAMOTO Mitsuharu
2008-07-30 21:51 ` Jason Rumney
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