From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Bradford Subject: Re: Re: rotation. Date: Wed, 8 Jan 2003 12:05:48 +0000 (GMT) Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <200301081205.h08C5mPv000776@darkstar.example.net> References: Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: from "=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=" at Jan 08, 2003 12:25:18 PM Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: =?iso-8859-1?q?M=E5ns_Rullg=E5rd?= Cc: luther@dpt-info.u-strasbg.fr, geert@linux-m68k.org, jsimmons@infradead.org, linux-fbdev-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org > > > > I'm about to implement rotation which is needed for devices > > > > like the ipaq. > > > > The question is do we flip the xres and yres values depending > > > > on the rotation or do we just alter the data that will be > > > > drawn to make the screen appear to rotate. How does hardware > > > > rotate view the x and y axis? Are they rotated or does just > > > > the data get rotated? > > > > > > Where are you going to implement the rotation? At the fbcon or > > > fbdev level? > > > > > > Fbcon has the advantage that it'll work for all frame buffer > > > devices. > > > > But you could also provide driver hooks for the chips which have > > such a rotation feature included (don't know if such exist, but i > > suppose they do, or may in the future). It would be nice to have an option to be able to do the rotation entirely in software - some desktop users might prefer to have a portait-orientated display, when their graphics card doesn't have any hardware rotation facilities at all. John. ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com