From: John Bradford <john@grabjohn.com>
To: "Måns Rullgård" <mru@users.sourceforge.net>
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
Subject: Re: Re: rotation.
Date: Wed, 8 Jan 2003 12:05:48 +0000 (GMT) [thread overview]
Message-ID: <200301081205.h08C5mPv000776@darkstar.example.net> (raw)
In-Reply-To: <yw1xu1gj51ep.fsf@tiptop.e.kth.se> from "Måns Rullgård" at Jan 08, 2003 12:25:18 PM
> > > > 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.
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WARNING: multiple messages have this Message-ID (diff)
From: John Bradford <john@grabjohn.com>
To: mru@users.sourceforge.net (Måns Rullgård)
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
Subject: Re: [Linux-fbdev-devel] Re: rotation.
Date: Wed, 8 Jan 2003 12:05:48 +0000 (GMT) [thread overview]
Message-ID: <200301081205.h08C5mPv000776@darkstar.example.net> (raw)
In-Reply-To: <yw1xu1gj51ep.fsf@tiptop.e.kth.se> from "Måns Rullgård" at Jan 08, 2003 12:25:18 PM
> > > > 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.
next prev parent reply other threads:[~2003-01-08 12:05 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-07 22:44 rotation James Simmons
2003-01-07 22:44 ` rotation James Simmons
2003-01-08 10:24 ` rotation Geert Uytterhoeven
2003-01-08 10:24 ` rotation Geert Uytterhoeven
2003-01-08 10:48 ` rotation Sven Luther
2003-01-08 10:48 ` [Linux-fbdev-devel] " Sven Luther
2003-01-08 11:25 ` Måns Rullgård
2003-01-08 12:05 ` John Bradford [this message]
2003-01-08 12:05 ` John Bradford
2003-01-08 12:55 ` Sven Luther
2003-01-08 12:55 ` [Linux-fbdev-devel] " Sven Luther
2003-01-09 10:00 ` Helge Hafting
2003-01-09 19:59 ` James Simmons
2003-01-09 23:03 ` Alan Cox
2003-01-09 22:35 ` Linus Torvalds
2003-01-10 3:45 ` Alan Cox
2003-01-09 19:45 ` James Simmons
2003-01-09 19:44 ` rotation James Simmons
2003-01-09 19:44 ` rotation James Simmons
2003-01-08 16:56 ` rotation Antonino Daplas
2003-01-08 16:56 ` [Linux-fbdev-devel] rotation Antonino Daplas
2003-01-09 19:54 ` James Simmons
2003-01-10 10:26 ` Antonino Daplas
2003-01-10 19:42 ` rotation James Simmons
2003-01-10 19:42 ` [Linux-fbdev-devel] rotation James Simmons
2003-01-10 21:10 ` Kernel 2.5.55 failed to boot with ACPI support Ole J. Hagen
2003-01-11 5:13 ` rotation Antonino Daplas
2003-01-11 5:13 ` [Linux-fbdev-devel] rotation Antonino Daplas
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