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Re: [Qemu-devel] [PATCH] Add QEMU DirectFB display driver

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH] Add QEMU DirectFB display driver
Date: Tue, 18 May 2010 11:23:04 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20100430 Fedora/3.0.4-2.fc12 Thunderbird/3.0.4

On 05/18/10 11:12, Stefano Stabellini wrote:
I think it would be better to implement an accelerated frontend for
rendering the framebuffer, like opengl or xv.

Well. xv is pretty pointless IMHO. gl makes sense. But to have some effect this needs some major restructions in qemu, the current DisplayState infrastructure can't handle anything but a simple, stupid framebuffer. There isn't much to accelerate, except maybe scaling the guest display to fullscreen on the host.

qxl + spice will change that though. qxl is a paravirtualized gfx adapter. Guest sends rendering commands. The spice protocol sends the rendering commands over the wire to the spice client, which in turn will render them (and can use gl to accelerate that).


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