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Re: [Qemu-devel] [PATCH] opengl rendering in the sdl window

From: Samuel Thibault
Subject: Re: [Qemu-devel] [PATCH] opengl rendering in the sdl window
Date: Sun, 7 Sep 2008 17:41:43 +0200
User-agent: Mutt/1.5.12-2006-07-14

Paul Brook, le Sun 07 Sep 2008 16:35:54 +0100, a écrit :
> It also depends what testcase you're benchmarking. A few pixels changing 
> every 
> frame is IMHO not a particularly interesting case.

But we shouldn't spend time on it.  For qemu it's trivial to get the
dirtyness of course. For Xen/KVM it's far less.

> The interesting cases are guest completely idle,

Which needs to be somehow detected.

> and large screen updates.

In that case, why blitting from main memory to video memory?  Sure video
memory is slow.  But the guest already does tricky stuff to cope with


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