From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Alan Third Newsgroups: gmane.emacs.bugs Subject: bug#46556: 27.1; transparent images are displayed incorrectly if rotated Date: Tue, 16 Feb 2021 21:24:24 +0000 Message-ID: References: <86mtw4tiyg.fsf@gmail.com> <87sg5ww430.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4281"; mail-complaints-to="usenet@ciao.gmane.io" Cc: ynyaaa@gmail.com, 46556@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Feb 16 22:25:12 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 1lC7qI-0000x0-SN for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 16 Feb 2021 22:25:10 +0100 Original-Received: from localhost ([::1]:42140 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lC7qH-0001oM-RW for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 16 Feb 2021 16:25:09 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:50556) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lC7q9-0001nv-Uo for bug-gnu-emacs@gnu.org; Tue, 16 Feb 2021 16:25:01 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:58501) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lC7q9-0003ta-Me for bug-gnu-emacs@gnu.org; Tue, 16 Feb 2021 16:25:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lC7q9-0006vE-Ic for bug-gnu-emacs@gnu.org; Tue, 16 Feb 2021 16:25:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Alan Third Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 16 Feb 2021 21:25:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 46556 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 46556-submit@debbugs.gnu.org id=B46556.161351067726573 (code B ref 46556); Tue, 16 Feb 2021 21:25:01 +0000 Original-Received: (at 46556) by debbugs.gnu.org; 16 Feb 2021 21:24:37 +0000 Original-Received: from localhost ([127.0.0.1]:41814 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lC7pl-0006uX-5b for submit@debbugs.gnu.org; Tue, 16 Feb 2021 16:24:37 -0500 Original-Received: from outbound.soverin.net ([116.202.65.218]:51107) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lC7pi-0006uH-AX for 46556@debbugs.gnu.org; Tue, 16 Feb 2021 16:24:35 -0500 Original-Received: from smtp.soverin.net (unknown [10.10.3.24]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by outbound.soverin.net (Postfix) with ESMTPS id 20CDB6013B; Tue, 16 Feb 2021 21:24:28 +0000 (UTC) Original-Received: from smtp.soverin.net (smtp.soverin.net [159.69.232.138]) by soverin.net DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=idiocy.org; s=soverin; t=1613510667; bh=j/EVz4eKwoMW7YQ2RvMx/J3AMBs9MMLCpmimW6hetQY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=MolTdinqd9fHAFeJLBVy8nNdU5liITKgWfJG22yZNSzvcWZdqwI4PP3ATLIXUkDsc TV60CpCp2RFfvHN7+bcf2iiR502zRtJYcSL09Xc+tf8SdBbORz5qP8XXo1foNwYVEl 5JLPOjDO2bjSVcifyl2DRJEFqHvPYUWsGyvkzdrPgSL3ZLPwj639zYC90dJmWQbplA 9LTBCho4W40i++b5w0pUovdl7EOnxWDg3RtTFQZVWs2ShLpXb5sM5RXQrPSXGhPszX bGzrBBWOPMiOXTkGimhE3+HPArodsEu4wTXGPpiFwX/dsOsIL/5sRat+LUcM9t33sJ VfIWXNSxntDBQ== Original-Received: by breton.holly.idiocy.org (Postfix, from userid 501) id C954E202A7BFFA; Tue, 16 Feb 2021 21:24:24 +0000 (GMT) Mail-Followup-To: Alan Third , Lars Ingebrigtsen , ynyaaa@gmail.com, 46556@debbugs.gnu.org Content-Disposition: inline In-Reply-To: <87sg5ww430.fsf@gnus.org> 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:200160 Archived-At: On Tue, Feb 16, 2021 at 02:10:43PM +0100, Lars Ingebrigtsen wrote: > ynyaaa@gmail.com writes: > > > The form below displays same images with different rotation, different > > format. > > In Emacs 28, I get the following with the test case: > > > This is on Debian bullseye. > > In Emacs 27, I get something very different: > > > Which looks all kinds of wrong, so this has changed quite a bit since > Emacs 27. The only difference between the two is that on X with Emacs 28 we use nearest neighbour filtering on image scale up instead of some smoothing algorithm. > Would it be possible for you to test with Emacs 28 and see whether the > problem you report (on Windows) is still present there? It does sound like something must be going wrong on Windows. Unfortunately I don't know what that could be because, as I said on the other bug report, NS and Windows use the same rotation logic, and NS is fine, so it must be when it comes to actually drawing that the problem manifests. -- Alan Third