From owner-freebsd-questions@freebsd.org Thu Sep 22 07:19:26 2016 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 97A84BE5BF6 for ; Thu, 22 Sep 2016 07:19:26 +0000 (UTC) (envelope-from m.e.sanliturk@gmail.com) Received: from mail-yw0-x234.google.com (mail-yw0-x234.google.com [IPv6:2607:f8b0:4002:c05::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6AD3D86A for ; Thu, 22 Sep 2016 07:19:26 +0000 (UTC) (envelope-from m.e.sanliturk@gmail.com) Received: by mail-yw0-x234.google.com with SMTP id u82so84502367ywc.2 for ; Thu, 22 Sep 2016 00:19:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=O3aoOwJmu8zk8i54ZLaNsc77WhjL/XroCCctJDIkH7w=; b=bIGlCM5XzlV55fqzmhoVSOEqbtPnDjmLCzl9hRscrSgxiBOOilQ0nm+egLVXolnq1m VTYgfdZ6CrsP+PcQ7AdkPYe0DfqNFNsg0ZZ3X00oJwHMGbuAdj01zo9wNutCWjHRJG9Z KinH11mY0tASC9QyyTvxEqtkKyvdxq8St0rE6V0qQ7iPPtyg4d5FCkpf0Tn/Au1NftlV 9DkrRpW+9ev5xu3U+Z3F+5D75CaEqIJjLQyR/bXOP7+ynrnWlYr6Y8zl3dtFftIcUtgW GJsPjOacasyqwUK9M/AJVkyJcc4RHJVJR4HHafg9D+S5AX3lSPERrxEwXCSJODr6rXtz tuyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=O3aoOwJmu8zk8i54ZLaNsc77WhjL/XroCCctJDIkH7w=; b=HvJr8Z2/u+PKsk6OyhM+uHj3pzt4AFCKfPa1YvzvpURY7ODeaYJBcjXrCRz92Cvk7D +FRf2KYYqAekgYZQgkkIC+I7ILf5Odx47YUT9n8veZE3ltVo9x7d2kMXRkTaKSId3lVd POQVbCyQPMN1qQYnowjEfsi1KQJOfjC/FIU2mH11q04M7glXD2qs7i43GhDS+GkpcZw1 LOAFH9iH+EEGneZL59gzRt6vx+6uLucUWV4Z5gsklXtka0HTwKe4Ug33yGyQO5dik/vz nwlbWYnwONNq6apQFITOBeEGSPI4Q1dBlaUFLfvFuS6BvJNLSKrVlUPobDiGFzfae5MM TuMQ== X-Gm-Message-State: AE9vXwPID9Rb511hQHPYFb0+MLgcB/Eo5sKIspUO+aCjLwH4i7J57+6reWG405OerJz4wgnzluvs84z8wzSCow== X-Received: by 10.129.161.2 with SMTP id y2mr314783ywg.305.1474528765623; Thu, 22 Sep 2016 00:19:25 -0700 (PDT) MIME-Version: 1.0 Received: by 10.37.88.214 with HTTP; Thu, 22 Sep 2016 00:19:25 -0700 (PDT) In-Reply-To: <15ee2107-8cdc-8d1a-4bb5-2765587453b0@netfence.it> References: <2deff892-7ac3-e3e2-92fe-27e95f089ea0@netfence.it> <20160922051741.5092ccae.freebsd@edvax.de> <15ee2107-8cdc-8d1a-4bb5-2765587453b0@netfence.it> From: Mehmet Erol Sanliturk Date: Thu, 22 Sep 2016 00:19:25 -0700 Message-ID: Subject: Re: OpenGL over X11/SSH To: Andrea Venturoli Cc: Polytropon , "freebsd-questions@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Sep 2016 07:19:26 -0000 On Wed, Sep 21, 2016 at 11:48 PM, Andrea Venturoli wrote: > On 09/22/16 05:17, Polytropon wrote: > > If I understand the messages correctly, the OpenGL output requires >> direct rendering (DRM) instead of a software renderer. >> > > Ok, but why? > Is this a requirement an X client can impose? > An option in some port? > A sysctl? > ...? > > I see other programs giving the same message, but then proceed with > software rendering. > > > Reason is the kind of writing and compilation of OpenGL programs : There are two options : ( 1 ) Use graphics card hardware : This depends on graphics card related libraries/features and requires a graphics card having the used features ( 2 ) Without using graphics card hardware , means using software for graphics computations. Therefore , it is necessary to check the program to use with respect to which features are used and apply it with respect to these features . If the program depends on graphics card hardware , and such a graphics card does not exist , it will produce errors and stop or crash . Mehmet Erol Sanliturk > > The DRM/DRI >> task is being performed directly on the hardware the program is >> running on and maybe cannot be redirected to a remote X system. >> > > Being a headless server, I don't think I've enabled DRI on this box... I > don't load any related kernel module and I don't even have an Xorg.conf. > BTW, I forgot to mention this is 10.3/amd64. > > > > The somehow direct access to the hardware maybe cannot be tunneled >> over X11/SSH. >> > > Ok with this; I'd just like to avoid DRM/DRI at all. > > > > The messages indicate that the DRM device cannot be >> found and the r600 (Radeon?) driver cannot be loaded. >> > > There is no Radeon card on the headless box; the CPU is an i5 (with > integrated GPU) and that's all. > I've got a Radeon on the client (i.e. where the X server runs), but does > this matter? > > > > This is a quire early error of libGL. >> > > Sorry, I don't understand what you mean here. > > > > On the other hand, if you use software rendering, it _should_ work. >> > > Exactly as I thought. > So the question is: how do I force software rendering? > > > > bye & Thanks > av. > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe > @freebsd.org" >