commit 017aa8439b2855792e0ba47092d4354fc26ac064
Author: Peter Rosin <p...@lysator.liu.se>
Date: Tue Jun 16 14:11:11 2009 +0200
Describe the Tight LastRect Pseudo-encoding.
Signed-off-by: Peter Rosin <p...@lysator.liu.se>
diff --git a/rfbproto.rst b/rfbproto.rst
index 33a8fc5..9db6164 100644
--- a/rfbproto.rst
+++ b/rfbproto.rst
@@ -750,7 +750,7 @@ Code Vendor Signature Description
-32 "``TGHT``" "``JPEGQLVL``" JPEG Quality Level
-223 "``TGHT``" "``NEWFBSIZ``" `DesktopSize Pseudo-encoding`_ (New
FB Size)
--224 "``TGHT``" "``LASTRECT``" Last Rect
+-224 "``TGHT``" "``LASTRECT``" `LastRect Pseudo-encoding`_
-232 "``TGHT``" "``POINTPOS``" Pointer Position
-239 "``TGHT``" "``RCHCURSR``" `Cursor Pseudo-encoding`_ (Rich
Cursor)
@@ -1510,6 +1510,8 @@ However, because there is no strong connection between a
client that has more than one *FramebufferUpdateRequest* pending at any
given time cannot be sure that it has received all framebuffer updates.
+See the `LastRect Pseudo-encoding`_ for an extension to this message.
+
SetColourMapEntries
-------------------
@@ -1662,6 +1664,7 @@ Number Name
8 `zlibhex Encoding`_
16 `ZRLE Encoding`_
-223 `DesktopSize Pseudo-encoding`_
+-224 `LastRect Pseudo-encoding`_
-239 `Cursor Pseudo-encoding`_
-247 to -256 `Compression Level Pseudo-encoding`_
-305 `gii Pseudo-encoding`_
@@ -1678,7 +1681,7 @@ Number Name
15 TRLE
17 Hitachi ZYWRLE
-1 to -222 Tight options
--224 to -238 Tight options
+-225 to -238 Tight options
-240 to -246 Tight options
-257 to -272 Anthony Liguori
-273 to -304 VMWare
@@ -2242,6 +2245,19 @@ gracefully, e.g. by showing a black framebuffer or delay
the screen
update until a proper update of the framebuffer contents has been
received.
+LastRect Pseudo-encoding
+------------------------
+
+A client which requests the *LastRect* pseudo-encoding is declaring
+that it does not need the exact number of rectangles in a
+*FramebufferUpdate* message. Instead, it will stop parsing when it
+reaches a *LastRect* rectangle. A server may thus start transmitting
+the *FramebufferUpdate* message before it knows exactly how many
+rectangles it is going to transmit, and the server typically advertises
+this situation by saying that it is going to send 65535 rectangles,
+but it then stops with a *LastRect* instead of sending all of them.
+There is no further data associated with the pseudo-rectangle.
+
Compression Level Pseudo-encoding
---------------------------------
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