From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261155AbVDHWqK (ORCPT ); Fri, 8 Apr 2005 18:46:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261169AbVDHWqK (ORCPT ); Fri, 8 Apr 2005 18:46:10 -0400 Received: from main.gmane.org ([80.91.229.2]:17084 "EHLO ciao.gmane.org") by vger.kernel.org with ESMTP id S261155AbVDHWqI (ORCPT ); Fri, 8 Apr 2005 18:46:08 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: =?iso-8859-1?q?M=E5ns_Rullg=E5rd?= Subject: Re: A way to smoothly overgive graphics control to an other process/program Date: Sat, 09 Apr 2005 00:44:53 +0200 Message-ID: References: <1112995965l.18701l.3l@Foo> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 76.80-203-227.nextgentel.com User-Agent: Gnus/5.1006 (Gnus v5.10.6) XEmacs/21.4 (Security Through Obscurity, linux) Cancel-Lock: sha1:5BrQ358M5PmFvyJugKeg4+3/i+U= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Dennis Heuer writes: > Hello, > > I feel disturbed by the fact that when display-controlling programs > are started in line (like the bootloader, linux, and finally > xdm/gdm/kdm), there appear several switches of display resolution, > text- and graphics mode, and background images. I asked myself how to > get that more smooth as if there was only one presentation from the > time the bootloader started up to the gnome/kde session. I thought > that one could implement a small api that allows a running process to > freeze display updates until the next process has overtaken the > display, loaded the same presentation (from same location or just by > similar configuration), dumped it to the working buffer of the > graphics card, and released the display (a timeout with fallback-mode > could make this transaction more fault-resistent). This way, the image > loaded by the bootloader could be held on display up to the graphical > login, and even as the > desktop background, without any visible effect. > > Is this technically feasible? It's technically pointless. Take a look at bootsplash, though. -- Måns Rullgård mru@inprovide.com