[haiku-appserver] Re: Backbuffer access
- From: "Mikael Jansson (mailing lists)" <lists@xxxxxxxxxxxxxxxxx>
- To: haiku-appserver@xxxxxxxxxxxxx
- Date: Fri, 22 Oct 2004 23:48:20 GMT
Adi Oanca <adioanca@xxxxxxxxxxxxx>:
>
> Mikael Jansson (mailing lists) wrote:
> > Hello,
> >
> > I'm sorry for not contributing much of anything, but I have a
> > question:
> > In what way are you providing for a framework so that remote
> > controlling through for example the VNC protocol can be made as
> > fast as
> > painlessly as possible? Today that involves doing a memcpy() from
> > the
> > pointer received from a BWindowScreen at a high rate, but this
> > scheme
> > could be vastly improved if the background buffer used for drawing
> > could be shared and apps could subscribe to update messages, or
> > through
> > other means.
>
> Don't know... we'll think about that.
>
> Regarding the backbuffer, it appears it can be avoided...
>
Okay, sure, as long as it'll be possible to get at the contents at the
same rate as they're being updated by the app_server. In Windows, the
VNC servers are very fast. What does Windows do that makes it that much
better for remote desktop-style apps? Maybe that could be a source of
inspiration. I suppose looking at the sources for any Windows VNC
server would suffice.
--
Mikael Jansson
http://mikael.jansson.be
Other related posts:
