The rfb standard keeps envolving.  While the official spec is kind of
frozen since a decade or so the community maintains an updated version
of the spec at:
	https://github.com/rfbproto/rfbproto/

This series adds support for two new extensions from that spec: alpha
cursor and extended desktop resize.

alpha cursor allows a full alpha channel for the cursor image (unlike
the rich cursor extension which has only a bitmask for transparency).

extended desktop resize makes the desktop-resize work both ways, i.e. we
can not only signal guest display resolution changes to the vnc client
but also vnc client window size changes to the guest.

Tested with tigervnc.

gtk-vnc (and anything building on top of it like virt-viewer and
virt-manager) has no support for these extensions.

v2:
 - dropped qxl bits (will be a separate patch series).
 - use error codes for desktop resize responses.
 - little tweaks here and there.
 - pick up some review tags.

Gerd Hoffmann (9):
  console: drop qemu_console_get_ui_info
  console: allow con==NULL in dpy_{get,set}_ui_info and
    dpy_ui_info_supported
  vnc: use enum for features
  vnc: drop unused copyrect feature
  vnc: add pseudo encodings
  vnc: add alpha cursor support
  vnc: force initial resize message
  vnc: add support for extended desktop resize
  vnc: move check into vnc_cursor_define

 include/ui/console.h |   1 -
 ui/vnc.h             |  32 ++++++++------
 ui/console.c         |  18 ++++----
 ui/vnc.c             | 103 +++++++++++++++++++++++++++++++++++++------
 4 files changed, 118 insertions(+), 36 deletions(-)

-- 
2.27.0

On Tue, Dec 08, 2020 at 12:57:28PM +0100, Gerd Hoffmann wrote:
> The rfb standard keeps envolving.  While the official spec is kind of
> frozen since a decade or so the community maintains an updated version
> of the spec at:
> 	https://github.com/rfbproto/rfbproto/
> 
> This series adds support for two new extensions from that spec: alpha
> cursor and extended desktop resize.
> 
> alpha cursor allows a full alpha channel for the cursor image (unlike
> the rich cursor extension which has only a bitmask for transparency).
> 
> extended desktop resize makes the desktop-resize work both ways, i.e. we
> can not only signal guest display resolution changes to the vnc client
> but also vnc client window size changes to the guest.
> 
> Tested with tigervnc.
> 
> gtk-vnc (and anything building on top of it like virt-viewer and
> virt-manager) has no support for these extensions.

I'm working on adding these two extensions to gtk-vnc as they're a notable
gap compared to spice.

Regards,
Daniel
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