From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 25952 invoked by alias); 28 Apr 2014 21:02:15 -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 25929 invoked by uid 89); 28 Apr 2014 21:02:14 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-0.7 required=5.0 tests=AWL,BAYES_40,RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: Ishtar.tlinx.org Received: from ishtar.tlinx.org (HELO Ishtar.tlinx.org) (173.164.175.65) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Mon, 28 Apr 2014 21:02:13 +0000 Received: from [192.168.4.12] (Athenae [192.168.4.12]) by Ishtar.tlinx.org (8.14.7/8.14.4/SuSE Linux 0.8) with ESMTP id s3SL24pP062916 for ; Mon, 28 Apr 2014 14:02:08 -0700 Message-ID: <535EC1CC.6040502@tlinx.org> Date: Mon, 28 Apr 2014 21:02:00 -0000 From: Linda Walsh User-Agent: Thunderbird MIME-Version: 1.0 To: cygwin-xfree@cygwin.com Subject: Re: running openGL application remotely using ssh -X and cygwin/x ,extension "NV-GLX" missing on display "localhost:10.0 References: <535B9E0F.4030109@dronecode.org.uk> In-Reply-To: <535B9E0F.4030109@dronecode.org.uk> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2014-04/txt/msg00009.txt.bz2 Jon TURNEY wrote: > > Yes, this should work. ---- *But*, I'm pretty sure it doesn't anymore since the "Xgl" extension that was used to transport the openGL commands between client/server was removed from xorg's Xserver. From wikipedia: Xgl was a display server implementation supporting the X Window System protocol designed to take advantage of modern graphics cards via their OpenGL drivers, layered on top of OpenGL via glitz. It supported hardware acceleration of all X, OpenGL and XVideo applications and graphical effects by a compositing window manager such as Compiz or Beryl. The project was started by David Reveman of Novell and first released on January 2, 2006. It was removed[1] from the X.org server in favor of AIGLX on June 12, 2008. --- AIGLX doesn't work with client's native openGL drives when the DISPLAY isn't local. Instead, it sends full-frame-buffer updates to simulate what would be happening -- something that "appears" to work correctly for small OpenGL windows. But is entirely 'faked' (not really remote openGL that used the Server's acceleration Hardware. > I'm not entirely clear if the 'extension �NV-GLX� missing' message is a > warning or an error, but according to the internet it seems to be due to > having a Nvidia libGL installed on the remote machine, so if all else > fails you might look at uninstalling the Nvidia proprietary driver and > libGL, and using mesa instead. ---- Which would give you unaccelerated frame-buffer updates to simulate the effect. Not quite what used to be available. Note: this isn't a cygwin specific problem. i.e. people running xorg's server on a linux box have the same problem -- accelerated+remote 3D graphics seems to be dead. -- 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/