From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Mundt Subject: Re: Re: [PATCH][RFC] Add support for Epson S1D13806 FB Date: Mon, 14 Mar 2005 16:35:09 +0200 Message-ID: <20050314143509.GD2695@linux-sh.org> References: <20050314130014.55A073658E8@mail.esiee.fr> <200503142207.57074.adaplas@hotpop.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="wLAMOaPNJ0fu1fTG" Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1DAqf2-0004I0-98 for linux-fbdev-devel@lists.sourceforge.net; Mon, 14 Mar 2005 06:35:12 -0800 Received: from smtp3.pp.htv.fi ([213.243.153.36]) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.41) id 1DAqf0-00069Q-KH for linux-fbdev-devel@lists.sourceforge.net; Mon, 14 Mar 2005 06:35:12 -0800 Content-Disposition: inline In-Reply-To: <200503142207.57074.adaplas@hotpop.com> Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: To: linux-fbdev-devel@lists.sourceforge.net Cc: adaplas@pol.net --wLAMOaPNJ0fu1fTG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Mar 14, 2005 at 10:10:35PM +0800, Antonino A. Daplas wrote: > BTW, I would guess that scrolling is slow in this driver. Since this dri= ver > can do pan_display, If this:=20 >=20 > info->flags =3D FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN; >=20 > is added somewhere before register_framebuffer(), and var->xres_virtual > > var->xres, you might get a several-fold increase in scrolling speed (since > scrolling mode will be SCROLL_PAN_REDRAW instead of SCROLL_REDRAW). >=20 This is interesting. When FBINFO_HWACCEL_YPAN was added to hitfb, it slowed down scrolling by several orders of magnitude. Perhaps it was something relating to how the pan_display was implemented, but it's definitely not a general win for everyone.. --wLAMOaPNJ0fu1fTG Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFCNaEd1K+teJFxZ9wRArmNAJ42hAOYwyKbuuT1dsB7vPm1hTiMyQCfVODf 0bXD/nAtFaCosRdXZV4RvLQ= =2EXi -----END PGP SIGNATURE----- --wLAMOaPNJ0fu1fTG-- ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click