From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27586 invoked by alias); 21 Jun 2013 11:32:14 -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 27576 invoked by uid 89); 21 Jun 2013 11:32:13 -0000 X-Spam-SWARE-Status: No, score=-3.1 required=5.0 tests=AWL,BAYES_00,KHOP_THREADED,RCVD_IN_DNSWL_NONE,RCVD_IN_HOSTKARMA_YE autolearn=ham version=3.3.1 Received: from nm6-vm7.bt.bullet.mail.ir2.yahoo.com (HELO nm6-vm7.bt.bullet.mail.ir2.yahoo.com) (212.82.99.229) by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Fri, 21 Jun 2013 11:32:11 +0000 Received: from [212.82.98.46] by nm6.bt.bullet.mail.ir2.yahoo.com with NNFMP; 21 Jun 2013 11:32:09 -0000 Received: from [77.238.189.18] by tm7.bt.bullet.mail.ir2.yahoo.com with NNFMP; 21 Jun 2013 11:32:09 -0000 Received: from [127.0.0.1] by smtp818.mail.ird.yahoo.com with NNFMP; 21 Jun 2013 11:32:09 -0000 X-Yahoo-SMTP: u.JgLvyswBBMp9ZJJfsX14qmYb3T2ivhMAr6OupnxLpNQEFZ9g-- X-Rocket-Received: from [192.168.1.72] (jon.turney@86.132.234.216 with plain) by smtp818.mail.ird.yahoo.com with SMTP; 21 Jun 2013 11:32:09 +0000 UTC Message-ID: <51C439CB.4050305@dronecode.org.uk> Date: Fri, 21 Jun 2013 11:32:00 -0000 From: Jon TURNEY Reply-To: cygwin-xfree User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: cygwin-xfree@cygwin.com CC: marco.atzeri@gmail.com Subject: Re: fltk / gl rendering problem References: <51BDCFCE.3060608@gmail.com> <51BDD0DB.1040807@gmail.com> <51BEB13E.9090907@gmail.com> In-Reply-To: <51BEB13E.9090907@gmail.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit X-SW-Source: 2013-06/txt/msg00046.txt.bz2 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. I wrote a bit about these limitations at [1] [1] http://www.cygwin.com/ml/cygwin-xfree/2012-10/msg00009.html > 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. -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- 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/