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Re: [Qemu-devel] Reducing X communication bandwidth
From: |
Johannes Schindelin |
Subject: |
Re: [Qemu-devel] Reducing X communication bandwidth |
Date: |
Sun, 11 Jul 2004 11:53:28 +0200 (CEST) |
Hi,
On Sat, 10 Jul 2004, Julian Seward wrote:
> The attached patch against sdl.c fixes this. It keeps a shadow
> copy of video memory. When a request arrives at sdl_update()
> to redraw an area, the area is compared against the shadow copy,
> and only the parts that have really changed are passed to
> SDL_UpdateRect(). The comparison is done at a granularity of
> 32x32 chunks of pixels.
Why does this remind me of VNC? In fact, that kind of application is the
exact reason I started my VNC patch. It could also be useful as a Windows
98 Terminal Server...
Ciao,
Dscho