From: "Antonino A. Daplas" <adaplas@gmail.com>
To: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: linux-fbdev-devel <linux-fbdev-devel@lists.sourceforge.net>
Subject: Re: [PATCH] pm2fb: fb_sync added
Date: Tue, 08 May 2007 21:34:10 +0800 [thread overview]
Message-ID: <1178631250.4953.7.camel@daplas> (raw)
In-Reply-To: <4640758d62f82@wp.pl>
On Tue, 2007-05-08 at 15:05 +0200, Krzysztof Helt wrote:
> Dnia 8-05-2007 o godz. 14:32 Antonino A. Daplas napisał(a):
> > On Tue, 2007-05-08 at 09:26 +0200, Krzysztof Helt wrote:
>
> I see a major problem with using copyarea acceleration comparing
> to redraw function. The copyarea always moves the whole
> framebuffer (milions of pixels) while the redraw works very smart
> to redraw only things which has to be redrawn. I am working to
> use something smarter for copyarea. No success yet.
>
Are you using just plain move and redraw? How about trying pan + move,
or pan + redraw. If you can set var->yres_virtual to be at least 2x
var->yres, it might improve scrolling speed a lot.
Tony
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prev parent reply other threads:[~2007-05-08 13:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-08 7:26 [PATCH] pm2fb: fb_sync added Krzysztof Helt
2007-05-08 12:32 ` Antonino A. Daplas
2007-05-08 13:05 ` Krzysztof Helt
2007-05-08 13:34 ` Antonino A. Daplas [this message]
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