From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#47895: 28.0.50; Emacs should only animate images that are visible Date: Mon, 19 Apr 2021 21:28:09 +0300 Message-ID: <8335vmrux2.fsf@gnu.org> References: <87r1j6m920.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="22591"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 47895@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Apr 19 20:31:03 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lYYfm-0005nF-TO for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 19 Apr 2021 20:31:02 +0200 Original-Received: from localhost ([::1]:60734 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lYYfm-0000gG-0O for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 19 Apr 2021 14:31:02 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38134) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYYdq-0008Bh-Ir for bug-gnu-emacs@gnu.org; Mon, 19 Apr 2021 14:29:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:40500) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lYYdq-0005Ta-Ay for bug-gnu-emacs@gnu.org; Mon, 19 Apr 2021 14:29:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lYYdq-000876-7d for bug-gnu-emacs@gnu.org; Mon, 19 Apr 2021 14:29:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 19 Apr 2021 18:29:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 47895 X-GNU-PR-Package: emacs Original-Received: via spool by 47895-submit@debbugs.gnu.org id=B47895.161885692231163 (code B ref 47895); Mon, 19 Apr 2021 18:29:02 +0000 Original-Received: (at 47895) by debbugs.gnu.org; 19 Apr 2021 18:28:42 +0000 Original-Received: from localhost ([127.0.0.1]:52046 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lYYdS-00086S-V5 for submit@debbugs.gnu.org; Mon, 19 Apr 2021 14:28:42 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:53542) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lYYdO-00086C-IL for 47895@debbugs.gnu.org; Mon, 19 Apr 2021 14:28:38 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:46805) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lYYdJ-0005Jv-Bp; Mon, 19 Apr 2021 14:28:29 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:2615 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1lYYdH-00074w-KQ; Mon, 19 Apr 2021 14:28:28 -0400 In-Reply-To: <87r1j6m920.fsf@gnus.org> (message from Lars Ingebrigtsen on Mon, 19 Apr 2021 20:19:19 +0200) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:204497 Archived-At: > From: Lars Ingebrigtsen > Date: Mon, 19 Apr 2021 20:19:19 +0200 > > Emacs is generally slow about calculating animated images, and that > should be fixed (there's a separate bug report for that), but there's > one thing Emacs could be doing: > > Not animating images that are off screen. > > I think most web browsers do this -- to avoid using too much CPU, which > is the same problem we have in Emacs: Opening a web page with many large > animated GIFs usually makes Emacs very slow. I'd be interested to see a backtrace for such animation of an image that is not on display. In general, since animation is triggered (I think) when the image is being prepared for redisplay, what you describe shouldn't be happening. If it dies indeed happen, I have a couple of guesses how that could be triggered, but it would be nice to see evidence. Thanks.