Den 2009-05-11 13:57 skrev Pierre Ossman: > There are some corner cases in the framebuffer update system that need > to be explicitly mentioned. > > Signed-off-by: Pierre Ossman <oss...@cendio.se> > --- > > Index: rfbproto.rst > =================================================================== > --- rfbproto.rst (revision 3809) > +++ rfbproto.rst (working copy) > @@ -637,6 +637,12 @@ > 2 ``U16`` *height* > =============== ==================== ========== ======================= > > +A request for an area that partly falls outside the current framebuffer > +must be cropped so that it fits within the framebuffer dimensions. > + > +Note that an empty area can still solicit a *FramebufferUpdate* even > +though that update will only contain pseudo-encodings. > + > KeyEvent > -------- > > @@ -1108,6 +1114,16 @@ > for the format of the data for each encoding and `Pseudo-encodings`_ > for the meaning of pseudo-encodings. > > +Note that a framebuffer update marks a transition from one valid > +framebuffer state to another. That means that a single update handles > +all received *FramebufferUpdateRequest* up to the point where the > +update is sent out. > + > +However, because there is no strong connection between a > +*FramebufferUpdateRequest* and a subsequent *FramebufferUpdate*, a > +client that has more than one *FramebufferUpdateRequest* pending at any > +given time cannot be sure that it has received all framebuffer updates. > + > SetColourMapEntries > ------------------- >
Maybe add something about the fact that it is not safe to send SetPixelFormat messages when you have outstanding FramebufferUpdateRequests? (which is important in the above context...) Cheers, Peter ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ tigervnc-rfbproto mailing list tigervnc-rfbproto@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tigervnc-rfbproto
