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Date: Thu, 31 Jan 2008 09:15:07 +0000
From: Jamie Lokier <jamie@shareable.org>
Subject: Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support
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To: qemu-devel@nongnu.org

andrzej zaborowski wrote:
> > > Offtoppic about updated regions in Windows: While testing with
> > > Quartzdebug, I realized, that qemu is updating always the whole
> > > screenwidth even if only the mouse is moved... is this a qemu problem,
> > > or is this the default windows behaviour?
> >
> > As far as I remember, this is a QEmu "problem".  It only marks lines as
> > dirty, not pixels.
> 
> In addition lines are not marked dirty because they have a dirty pixel
> in them but because they have a pixel in a dirty page. That means more
> lines are updated than those containing dirty pixels.

However, if there's an emulated "hardware mouse cursor", just moving
the mouse could be optimised to those pixels only.

-- Jamie