GNU bug report logs - #30699
26.0.91; buffer contents flicker on macOS frames when frames are resized

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Aaron Jensen <aaronjensen <at> gmail.com>
Cc: alan <at> idiocy.org, 30699 <at> debbugs.gnu.org
Subject: bug#30699: 26.0.91; buffer contents flicker on macOS frames when frames are resized
Date: Mon, 05 Mar 2018 20:00:07 +0200

> From: Aaron Jensen <aaronjensen <at> gmail.com>
> Date: Mon, 5 Mar 2018 08:21:45 -0800
> Cc: Alan Third <alan <at> idiocy.org>, 30699 <at> debbugs.gnu.org
> 
> > AFAIK, no.  Redrawing a garbaged frame involves clearing it and
> > completely redrawing all of its windows, and that is what you perceive
> > as flicker.
> 
> Thanks, I was thinking about double buffering--painting both the clear
> and the next paint on the same buffer before swapping it in, but I'm
> sure that's much more simplistic than what is actually happening.

We already have double-buffering on X, perhaps it can be implemented
on macOS as well.

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