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Re: [Qemu-devel] qvm86, kqemu and video speed
From: |
Jim C. Brown |
Subject: |
Re: [Qemu-devel] qvm86, kqemu and video speed |
Date: |
Wed, 13 Apr 2005 17:12:04 -0400 |
User-agent: |
Mutt/1.4i |
On Mon, Apr 11, 2005 at 04:07:44PM +0200, Struan Bartlett wrote:
> I understand qvm86 and kqemu provide some virtualisation of the host
> machine, including allowing the guest some direct memory access. Is it
> conceivable for these modules to be extended to allow the guest machine
> to directly write to host video memory, or else to a host memory buffer
> that is copied into the Qemu window?
>
This is doable, however I personally think that it is better to keep this all
userspace. Even for fast 3d graphics, you dnt have to use kernel mechanisms,
you could get away with using a custom videocard (or careful emulation of an
existing 3d card) and mapping it to, say, OpenGL calls. Most optimizations
can be done in userspace.
There was a patch sent a while back (the pci-proxy patch) that in theory would
allow qemu guest to use a host PCI video card (such as a PCI Voodoo3 card). This
was never actually tested, and I don't remeber if this patch has been updated
to work against the current version of qemu.
--
Infinite complexity begets infinite beauty.
Infinite precision begets infinite perfection.
- Re: [Qemu-devel] qvm86, kqemu and video speed, (continued)
- Re: [Qemu-devel] qvm86, kqemu and video speed, Alex Beregszaszi, 2005/04/12
- Re: [Qemu-devel] qvm86, kqemu and video speed, Fabrice Bellard, 2005/04/12
- Re: [Qemu-devel] qvm86, kqemu and video speed, use . reply-to . address, 2005/04/12
- Re: [Qemu-devel] qvm86, kqemu and video speed, Struan Bartlett, 2005/04/13
- Re: [Qemu-devel] qvm86, kqemu and video speed, Hetz Ben Hamo, 2005/04/13
- Re: [Qemu-devel] qvm86, kqemu and video speed, Leonardo E. Reiter, 2005/04/13
- Re: [Qemu-devel] qvm86, kqemu and video speed, Leonardo E. Reiter, 2005/04/13
- Re: [Qemu-devel] qvm86, kqemu and video speed, Thomas Steffen, 2005/04/14
- Re: [Qemu-devel] qvm86, kqemu and video speed, Oliver Gerlich, 2005/04/18
- Re: [Qemu-devel] qvm86, kqemu and video speed, emuls, 2005/04/19
Re: [Qemu-devel] qvm86, kqemu and video speed,
Jim C. Brown <=