From: Yuan MEI <yuan.mei.list@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel <emacs-devel@gnu.org>
Subject: Re: Redisplay issue
Date: Sun, 29 Nov 2015 15:35:04 -0800 [thread overview]
Message-ID: <CANGGyWaWpjxmLFGN1uAohEi0uLEVTK6JGBYz4O3inYq=2efQCg@mail.gmail.com> (raw)
In-Reply-To: <83two4olqj.fsf@gnu.org>
> I don't understand how Emacs could redraw only partially, if it
> received the correct coordinates of the exposed region. I might be
> able to understand how nothing could be redrawn, but partially?..
> There's something I'm missing here.
>
> Can you build your own Emacs? The display engine can produce a trace
> of what it does, but it isn't compiled by default. If you can build
> Emacs, then please configure with --enable-checking='yes,glyphs', then
> type "M-x trace-redisplay RET" inside Emacs, and post here everything
> it outputs to stderr starting with "expose_frame" when you succeed to
> reproduce this again.
>
> If you cannot build Emacs, then perhaps you could step with a debugger
> inside expose_frame and its subroutines, and tell what's going one
> there.
This is when redisplay works normally:
>>> right after window exposure
redisplay_preserve_echo_area (8)
redisplay_internal 0
0x299e030 ( SPEEDBAR): same window start
0x299e030 ( SPEEDBAR): 1
0x1383e60 (*GNU Emacs*): same window start
0x1383e60 (*GNU Emacs*): 1
redisplay_preserve_echo_area (9)
redisplay_internal 0
expose_frame (0, 0, 170, 1026)
expose_window (1, 1, 168, 1024)
expose_window (1, 0, 168, 0)
expose_window (1, 0, 168, 0)
expose_frame (0, 0, 818, 1026)
expose_window (1, 17, 816, 992)
expose_window (1, 1009, 816, 16)
expose_window (1, 16, 816, 0)
expose_window (1, 0, 816, 16)
>>> some time pause here, although nothing else (mouse is outside of Emacs, no mouse movement or key press)
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (9)
redisplay_internal 0
0x299e030 ( SPEEDBAR): same window start
0x299e030 ( SPEEDBAR): 1
0x1383e60 (*GNU Emacs*): same window start
0x1383e60 (*GNU Emacs*): 1
This is when partial redraw happened:
redisplay_preserve_echo_area (8)
redisplay_internal 0
0x299e030 ( SPEEDBAR): same window start
0x299e030 ( SPEEDBAR): 1
0x1383e60 (*GNU Emacs*): same window start
0x1383e60 (*GNU Emacs*): 1
redisplay_preserve_echo_area (9)
redisplay_internal 0
expose_frame (0, 0, 170, 1026)
expose_window (1, 1, 168, 1024)
expose_window (1, 0, 168, 0)
expose_window (1, 0, 168, 0)
expose_frame (0, 0, 818, 1026)
expose_window (1, 17, 816, 992)
expose_window (1, 1009, 816, 16)
expose_window (1, 16, 816, 0)
expose_window (1, 0, 816, 16)
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (9)
redisplay_internal 0
0x299e030 ( SPEEDBAR): same window start
0x299e030 ( SPEEDBAR): 1
0x1383e60 (*GNU Emacs*): same window start
0x1383e60 (*GNU Emacs*): 1
redisplay_preserve_echo_area (8)
redisplay_internal 0
0x299e030 ( SPEEDBAR): same window start
0x299e030 ( SPEEDBAR): 1
0x1383e60 (*GNU Emacs*): same window start
0x1383e60 (*GNU Emacs*): 1
redisplay_preserve_echo_area (9)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (9)
redisplay_internal 0
0x299e030 ( SPEEDBAR): same window start
0x299e030 ( SPEEDBAR): 1
0x1383e60 (*GNU Emacs*): same window start
0x1383e60 (*GNU Emacs*): 1
>>> I switched to another virtual desktop then came back, redraw remained incorrect but the following showed up in the log
redisplay_preserve_echo_area (9)
redisplay_internal 0
expose_frame (0, 0, 170, 1026)
expose_window (1, 1, 168, 1024)
expose_window (1, 0, 168, 0)
expose_window (1, 0, 168, 0)
expose_frame (0, 0, 818, 1026)
expose_window (1, 17, 816, 992)
expose_window (1, 1009, 816, 16)
expose_window (1, 16, 816, 0)
expose_window (1, 0, 816, 16)
>>> switched out and back again, finding the entire frame showing only the background color, no menu or status bar
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (9)
redisplay_internal 0
0x299e030 ( SPEEDBAR): same window start
0x299e030 ( SPEEDBAR): 1
0x1383e60 (*GNU Emacs*): same window start
0x1383e60 (*GNU Emacs*): 1
expose_frame (0, 0, 170, 1026)
expose_window (1, 1, 168, 1024)
expose_window (1, 0, 168, 0)
expose_window (1, 0, 168, 0)
expose_frame (0, 0, 818, 1026)
expose_window (1, 17, 816, 992)
expose_window (1, 1009, 816, 16)
expose_window (1, 16, 816, 0)
expose_window (1, 0, 816, 16)
>>> a few seconds of time pause, then a few glyphs showed up in the status bar
redisplay_preserve_echo_area (8)
redisplay_internal 0
0x299e030 ( SPEEDBAR): same window start
0x299e030 ( SPEEDBAR): 1
0x1383e60 (*GNU Emacs*): same window start
0x1383e60 (*GNU Emacs*): 1
redisplay_preserve_echo_area (9)
redisplay_internal 0
Any ideas?
Thanks,
Yuan
next prev parent reply other threads:[~2015-11-29 23:35 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-27 22:31 Redisplay issue Yuan MEI
2015-11-28 8:06 ` Eli Zaretskii
2015-11-28 8:27 ` Yuan MEI
2015-11-28 9:44 ` Eli Zaretskii
2015-11-28 20:19 ` Yuan MEI
2015-11-28 20:49 ` Eli Zaretskii
2015-11-29 2:54 ` Yuan MEI
2015-11-29 15:42 ` Eli Zaretskii
2015-11-29 23:35 ` Yuan MEI [this message]
2015-11-30 16:16 ` Eli Zaretskii
2015-12-01 4:51 ` Yuan MEI
2015-12-01 16:01 ` Eli Zaretskii
2015-12-02 4:35 ` Yuan MEI
2015-12-02 13:57 ` Eli Zaretskii
2015-12-03 4:55 ` Yuan MEI
2015-12-03 7:47 ` Eli Zaretskii
2015-12-03 8:09 ` Yuan MEI
2015-12-03 10:23 ` Eli Zaretskii
2015-12-03 18:16 ` martin rudalics
2015-12-03 21:23 ` Yuan MEI
2015-12-04 8:08 ` martin rudalics
2015-12-04 8:30 ` Yuan MEI
2015-12-04 8:48 ` martin rudalics
2015-12-04 8:54 ` Yuan MEI
2015-12-04 8:56 ` martin rudalics
2015-12-04 9:00 ` Yuan MEI
2015-12-04 9:05 ` martin rudalics
2015-12-04 9:47 ` Eli Zaretskii
2015-12-04 10:21 ` martin rudalics
2015-12-04 11:01 ` Eli Zaretskii
2015-12-04 11:12 ` Eli Zaretskii
2015-12-05 0:25 ` YAMAMOTO Mitsuharu
2015-12-05 9:17 ` Eli Zaretskii
2015-12-06 0:49 ` Yuan MEI
2015-12-07 3:33 ` YAMAMOTO Mitsuharu
2015-12-07 17:19 ` Eli Zaretskii
2015-12-08 4:03 ` YAMAMOTO Mitsuharu
2015-12-11 8:48 ` Eli Zaretskii
2015-11-28 21:44 ` joakim
2015-11-29 0:14 ` Yuan MEI
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