From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Kcuf7-0003a5-Rb for qemu-devel@nongnu.org; Tue, 09 Sep 2008 00:17:09 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Kcuf6-0003Zt-CG for qemu-devel@nongnu.org; Tue, 09 Sep 2008 00:17:09 -0400 Received: from [199.232.76.173] (port=56372 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Kcuf6-0003Zq-9X for qemu-devel@nongnu.org; Tue, 09 Sep 2008 00:17:08 -0400 Received: from mail2.shareable.org ([80.68.89.115]:50266) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1Kcuf6-0008Tq-1e for qemu-devel@nongnu.org; Tue, 09 Sep 2008 00:17:08 -0400 Received: from jamie by mail2.shareable.org with local (Exim 4.63) (envelope-from ) id 1Kcuf3-0005mm-2u for qemu-devel@nongnu.org; Tue, 09 Sep 2008 05:17:05 +0100 Date: Tue, 9 Sep 2008 05:17:05 +0100 From: Jamie Lokier Subject: Re: [Qemu-devel] [PATCH] opengl rendering in the sdl window Message-ID: <20080909041704.GA22162@shareable.org> References: <48C168CE.5040700@eu.citrix.com> <48C348D3.6070702@codemonkey.ws> <20080908134140.GF4947@shareable.org> <20080908134833.GQ2315@redhat.com> <48C53D24.8030803@redhat.com> <20080908150759.GB8465@shareable.org> <20080908154700.GT2315@redhat.com> <20080908231843.GA29606@redhat.com> <20080909001044.GA18018@shareable.org> <48C5E33E.7000802@codemonkey.ws> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48C5E33E.7000802@codemonkey.ws> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Anthony Liguori wrote: > But copying data isn't super expensive assuming you're hitting the cpu > cache (which you probably are). So I don't know how much it saves in > real life. Indeed. Framebuffers are sometimes a bit big to fit in the CPU cache, if the whole picture is being updated. But I see what you mean when there's a partial update. -- Jamie