GNU bug report logs - #1867
Resizing window causes text flickering when using antialiased font on X

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Package: emacs;

Reported by: Bo Lin <lbsmtp <at> gmail.com>

Date: Mon, 12 Jan 2009 10:20:03 UTC

Severity: normal

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

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Message #26 received at 1867 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: lbsmtp <at> gmail.com, "Jan D." <jan.h.d <at> swipnet.se>, 1867 <at> debbugs.gnu.org
Subject: Re: bug#1867: Resizing window causes text flickering when using
	antialiased font on X
Date: Wed, 05 Oct 2011 17:57:29 -0400

Eli Zaretskii <eliz <at> gnu.org> writes:

> The way redisplay is written, _any_ change to dimensions of _any_
> window sets a flag that will cause a thorough redisplay of all the
> windows on all the visible frames.  However, I'd expect that redisplay
> of any window not affected by the resizing be limited to redrawing the
> cursor.

Resizing a window redraws all windows on the same frame, even those
unaffected by the resizing.

The right way to fix flickering in Emacs is to implement double
buffering, which is not a trivial project.
This bug report was last modified 13 years and 232 days ago.

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