From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21898 invoked by alias); 23 Jun 2013 13:56:17 -0000 Mailing-List: contact cygwin-xfree-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-xfree-owner@cygwin.com Reply-To: cygwin-xfree@cygwin.com Mail-Followup-To: cygwin-xfree@cygwin.com Received: (qmail 21882 invoked by uid 89); 23 Jun 2013 13:56:17 -0000 X-Spam-SWARE-Status: No, score=-4.1 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE,SPF_PASS autolearn=ham version=3.3.1 Received: from mail-ee0-f45.google.com (HELO mail-ee0-f45.google.com) (74.125.83.45) by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Sun, 23 Jun 2013 13:56:16 +0000 Received: by mail-ee0-f45.google.com with SMTP id c1so5504956eek.4 for ; Sun, 23 Jun 2013 06:56:14 -0700 (PDT) X-Received: by 10.15.101.13 with SMTP id bo13mr17681878eeb.141.1371995774112; Sun, 23 Jun 2013 06:56:14 -0700 (PDT) Received: from [192.168.0.194] (93-33-96-250.ip43.fastwebnet.it. [93.33.96.250]) by mx.google.com with ESMTPSA id b7sm21362170eef.16.2013.06.23.06.56.12 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 23 Jun 2013 06:56:13 -0700 (PDT) Message-ID: <51C6FE7A.20706@gmail.com> Date: Sun, 23 Jun 2013 13:56:00 -0000 From: marco atzeri User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: cygwin-xfree CC: Jon TURNEY Subject: Re: fltk / gl rendering problem References: <51BDCFCE.3060608@gmail.com> <51BDD0DB.1040807@gmail.com> <51BEB13E.9090907@gmail.com> <51C439CB.4050305@dronecode.org.uk> In-Reply-To: <51C439CB.4050305@dronecode.org.uk> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2013-06/txt/msg00050.txt.bz2 Il 6/21/2013 1:32 PM, Jon TURNEY ha scritto: > On 17/06/2013 07:48, marco atzeri wrote: >> Il 6/16/2013 4:51 PM, marco atzeri ha scritto: >>> testing a octave/fltk graphics issue, I noticed that also the >>> demo of fltk with GL interface has a similar issue. > > Thanks for reporting this and thanks for providing the test binaries. > >>> On http://matzeri.altervista.org/works/fltk_gl/ >>> I uploaded the before and after apperance of "gl_overlay" demo. >>> >>> It is enough to move the window to loose the geometrical >>> image while the bars are correctly re-drawn. >>> >>> Running Xwin with -wgl does not show such defect, but it is >>> terribly slow. So I assume it is not a fltk defect but of >>> GL or XServer. > > I guess this should read "with -nowgl", in which case, this is a limitation of > the current implementation of -wgl mode, which will require lots of work to fix. Question: is "-wgl" disabled by some of the other Xwin options ? I was sure all my previous experiments where with "-wgl" But I see no difference between "xwin -rootless -nowgl" and "xwin -rootless" > I wrote a bit about these limitations at [1] > > [1] http://www.cygwin.com/ml/cygwin-xfree/2012-10/msg00009.html It seems the same defect so it seems related to "-wgl", at least in multiwindow mode. Testing with " xwin -multiwindow " the moving defect is present and slide layer are drawn " xwin -multiwindow -nowgl" the moving defect is NOT present but the slide layer are NOT drawn ( same for both "xwin -rootless -nowgl" and "xwin -rootless" ) >> further experiment showed that the defect is present when the integrate >> windows manager is used. With external window manager (fvwm, openbox,.. ) that >> defect does not apper. >> >> With external window manager another defect appears, the upper >> bar effect is not shown at all; while it is present on the integrated >> window manager. > > When I tested this, it looks like the solid area controlled by the "sides" > slider didn't get rendered into a separate layer when using software rendering > (either -nowgl or X server in windowed mode), so this is possibly some bug or > limitation in the software renderer, or possibly in a bug in the demo not > recognizing the lack of capabilities of the software renderer. Do you mean more likely a OpenGL bug of fltk one ? Regards Marco -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/