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Message-ID: <447F5EA7.7020300@gmail.com>
Date: Fri, 02 Jun 2006 05:39:51 +0800
From: "Antonino A. Daplas" <adaplas@gmail.com>
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To: Jan Engelhardt <jengelh@linux01.gwdg.de>
CC: "D. Hazelton" <dhazelton@enter.net>, Dave Airlie <airlied@gmail.com>,
       Jon Smirl <jonsmirl@gmail.com>, Pavel Machek <pavel@ucw.cz>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>, Kyle Moffett <mrmacman_g4@mac.com>,
       Manu Abraham <abraham.manu@gmail.com>, linux cbon <linuxcbon@yahoo.fr>,
       Helge Hafting <helge.hafting@aitel.hist.no>, Valdis.Kletnieks@vt.edu,
       linux-kernel@vger.kernel.org
Subject: Re: OpenGL-based framebuffer concepts
References: <20060519224056.37429.qmail@web26611.mail.ukl.yahoo.com> <200605282316.50916.dhazelton@enter.net> <Pine.LNX.4.61.0605312341240.30170@yvahk01.tjqt.qr> <200605312115.44907.dhazelton@enter.net> <Pine.LNX.4.61.0606011140110.3533@yvahk01.tjqt.qr>
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Jan Engelhardt wrote:
>>> As long as I can continue to use 80x25 or any of the "pure text modes"
>>> (vga=scan boot option says more) without loading any FB/DRM, I am satisfied
>> Jan, I don't plan on forcing fbdev/DRM on anyone. My work is going to leave 
>> vgacon alone, and if my work at making DRM and FBdev cooperate goes as 
>> planned, those two will remain independant, though part of my work aims at 
>> having fbdev provide all 2D graphics acceleration for DRM while DRM handles 
>> the 3D stuff via the Mesa libraries or similar.
>>
> That sounds acceptable.
> 
> But current vesafb is slower, noticable with scrolling as in `ls -Rl /`.
> Does it lack 2D acceleration?

No, vesafb does not support console acceleration.

If you use x86_32, adding video=vesafb:ypan,mtrr:3 in your boot option will
help.  Also using the lowest color depth will also help.

Tony