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Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support
From: |
Julian Seward |
Subject: |
Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support |
Date: |
Thu, 31 Jan 2008 12:38:10 +0100 |
User-agent: |
KMail/1.9.5 |
On Thursday 31 January 2008 10:46, Jamie Lokier wrote:
> Anthony Liguori wrote:
> > VGA framebuffer operations come in as memory operations. They're
> > tracked by watching what memory gets dirtied. This can only operate at
> > a page-granularity so this results in scan-line granularity updates.
> > The VNC front-end goes to great lengths to keep a shadowed framebuffer
> > and reduce these updates to a smaller update region. You could possibly
> > look at refactoring that code. However...
>
> That update region code should probably be moved to something generic
> and made into a generic display option.
>
> Reducing update region is logically orthogonal, and could work with
> any update method (e.g. local X11, remote X11, local X11-OpenGL,
> remote X11-OpenGL, SDL etc.). With some of those, for some people
> (especially some but not all remote setups) it might be worth it.
For exactly these reasons I developed a shadow framebuffer patch
which ...
> makes QEMU's graphics emulation much more usable over remote
> X connections, by reducing the amount of data sent to the X server.
> This is particularly noticeable for small display updates, most
> importantly mouse cursor movements, which become faster and so
> generally make the guest's GUI more pleasant to use.
See
http://lists.gnu.org/archive/html/qemu-devel/2007-03/msg00141.html
for the patch and short associated thread. It never got included,
though.
J
- [Qemu-devel] [patch] cocoa.m - Core Graphics support, Mike Kronenberg, 2008/01/21
- Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support, Alexander Graf, 2008/01/30
- Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support, Pierre d'Herbemont, 2008/01/30
- Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support, Anthony Liguori, 2008/01/30
- Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support, Jamie Lokier, 2008/01/31
- Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support,
Julian Seward <=
- Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support, Anthony Liguori, 2008/01/31
- Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support, Jamie Lokier, 2008/01/31
- Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support, Alexander Graf, 2008/01/31
Re: [Qemu-devel] [patch] cocoa.m - Core Graphics support, Mike Kronenberg, 2008/01/30