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Message-ID: <20110915223124.7c24e6bb@lxorguk.ukuu.org.uk>
Date: Thu, 15 Sep 2011 22:31:24 +0100
From: Alan Cox <alan@...rguk.ukuu.org.uk>
To: Florian Tobias Schandinat <FlorianSchandinat@....de>
Cc: Keith Packard <keithp@...thp.com>,
Tomi Valkeinen <tomi.valkeinen@...com>,
linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
dri-devel@...ts.freedesktop.org, linaro-dev@...ts.linaro.org,
"Clark\, Rob" <rob@...com>, Archit Taneja <archit@...com>
Subject: Re: Proposal for a low-level Linux display framework
> Okay, I see your problem. It's a bit strange you don't have acceleration. I
The hardware has 3D acceleration but not open so we can't support it.
There is no 2D acceleration - which seems to be increasingly common.
At some point I'll add hardware scrolling however by using the GTT to
implemnent scroll wrapping.
> sound like a big problem to me, but pretty inefficient, so probably copying the
> existing ones and adjusting it to your needs would be preferred (just like the
> sys* implementations exist).
I did have a look at the current ones but fixing them up given scan lines
can span page boundaries looked pretty horrible so I deferred it until I
feel inspired.
Alan
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