[Freeciv-Dev] Re: (PR#3513) GUI is unresponsive while handling network events

["Raimar Falke" <rf13@xxxxxxxxxxxxxxxxx>]

On Mon, Feb 24, 2003 at 06:58:42AM -0800, Arnstein Lindgard wrote:
> On Mon, 24 Feb 2003 02:34:30 -0800
> "Jason Short" <jdorje@xxxxxxxxxxxxxxxxxxxxx> wrote:
> 
> > If the network code only handled one (or a small number of) packet at a 
> > time, then when it returned the GUI would handle events before 
> > re-entering the network code.  The drawback is it would make the drawing 
> > code hideously slow.
> 
> I always wondered, what does it take to sync screen drawing with the
> vertical raster under X-windows? Say you want the real screen update
> to happen at fixed intervals only, and intermediate changes go to a
> buffer. Maybe this is what Rafal does with the SDL client.. but isn't
> there a way directly under X? If I were to write some kind of
> graphical client from scratch, this would be the first thing to look
> for.

IMHO this isn't possible. Two reasons: the network between the client
and the server with unknown latency. Second: who says that there is a
VBI? There is for example xvfb (virtual framebuffer X server)
<http://www.xfree86.org/4.0.1/Xvfb.1.html>.

        Raimar

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