wayland: Implement gtk-shell v3

Implement the gtk_shell.set_startup_id request, so that the ID is removed from the sequences list, and feedback updated accordingly.
wayland: Update gtk-shell protocol file to v3
2016-02-17 14:47:54 +01:00 · 2016-02-17 13:22:29 +01:00 · 2016-02-17 13:22:29 +01:00 · 2016-02-16 19:02:48 +08:00 · 2016-02-16 19:02:48 +08:00 · 2016-02-16 19:02:48 +08:00
181 changed files with 18498 additions and 16213 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -57,19 +57,21 @@ testgradient
 m4/*
 INSTALL
 mkinstalldirs
-src/mutter-enum-types.[ch]
-src/stamp-mutter-enum-types.h
-src/mutter-marshal.[ch]
-src/stamp-mutter-marshal.h
+meta-enum-types.[ch]
+src/stamp-meta-enum-types.h
 src/meta-dbus-display-config.[ch]
 src/meta-dbus-idle-monitor.[ch]
 src/meta-dbus-login1.[ch]
 src/gtk-shell-protocol.c
 src/gtk-shell-server-protocol.h
-src/xdg-shell-protocol.c
-src/xdg-shell-server-protocol.h
-src/xserver-protocol.c
-src/xserver-server-protocol.h
+src/xdg-shell-unstable-v*-protocol.c
+src/xdg-shell-unstable-v*-server-protocol.h
+src/pointer-gestures-unstable-v*-protocol.c
+src/pointer-gestures-unstable-v*-server-protocol.h
+src/relative-pointer-unstable-v*-protocol.c
+src/relative-pointer-unstable-v*-server-protocol.h
+src/pointer-constraints-unstable-v*-protocol.c
+src/pointer-constraints-unstable-v*-server-protocol.h
 src/meta/meta-version.h
 doc/reference/*.args
 doc/reference/*.bak
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,5 +9,3 @@ DISTCLEANFILES = \
 	intltool-update \
 	po/stamp-it \
 	po/.intltool-merge-cache
-
-DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc
--- a/176
+++ b/176
@@ -1,3 +1,179 @@
+3.19.4
+======
+* Fix updating stacking order when setting transient_for [Jonas; #755606]
+* Support screen rotation when supported by the driver [Carlos; #745079]
+* Protect against broken WM_CLASS property implementations [Sebastian; #759658]
+* Handle wl_pointer v5 events on wayland [Carlos; #760637]
+* Implement DND actions on wayland [Carlos; #760805]
+* Misc. bug fixes [Jonas, Rui, Ray, Marek; #754711, #756789, #759297, #758613,
+  #760330, #760476, #759222, #760670]
+
+Contributors:
+  Jonas Ådahl, Marek Chalupa, Carlos Garnacho, Sebastian Keller, Rui Matos,
+  Florian Müllner, Jasper St. Pierre, Ray Strode
+
+Translations:
+  Aurimas Černius [lt]
+
+3.19.3
+======
+* Correct refresh rate units on KMS/Wayland [Daniel; #758653]
+* Fix crash when initial cursor position is not on a monitor [Marek; #756698]
+* Fix crash when more CRTs are enabled than outputs connected [Rui; #751638]
+* Fix touch pointer emulation on wayland [Carlos; #756754]
+* Allow minimizing windows that don't advertise supporting it [Jasper; #758186]
+* Force 2-finger scroll by default if available [Bastien; #759304]
+* Fix crash during XWayland initialization [Marek; #751845]
+* Ensure to send a ConfigureNotify to just mapped windows [Rui; #759492]
+* Misc. bug fixes and cleanups [Carlos, Jonas, Lionel; #758239, #758633,
+  #755503, #759374]
+
+Contributors:
+  Jonas Ådahl, Marek Chalupa, Carlos Garnacho, Lionel Landwerlin, Rui Matos,
+  Bastien Nocera, Daniel Stone, Jasper St. Pierre
+
+3.19.2
+======
+* Fix crash on monitor unplug [Rui; #756796]
+* Exit cleanly on initialization errors [Owen; #757311]
+* Allow to determine backend setting from session type [Ray; #741666]
+* Fix DRM device detection for non-PCI devices [Alban; #754911]
+* Don't force placement of windows without buffer on wayland [Marek; #751887]
+* Fix initialization of bypass compositor hint [Rui; #758544]
+
+Contributors:
+  Alban Browaeys, Marek Chalupa, Rui Matos, Florian Müllner, Ray Strode,
+  Owen W. Taylor
+
+3.19.1
+======
+* wayland: Allow to trigger popups through keyboard/touch [Carlos; #756296]
+* Fix modifiers-only input source switching on Ubuntu [Alberts; #756543]
+* Misc. bug fixes [Jonas, Rui, Giovanni, Florian; #756675, #756660, #746420,
+  #756548, #756796, #757101, #757148]
+
+Contributors:
+  Jonas Ådahl, Giovanni Campagna, Carlos Garnacho, Rui Matos,
+  Alberts Muktupāvels, Florian Müllner
+
+Translations:
+  Daniel Șerbănescu [ro]
+
+3.18.1
+======
+* Misc. crash fixes [Jonas, Rui, Carlos, Owen, Florian; #755096, #754979,
+  #755490, #754357, #745785, #756642]
+* Improve HiDPI support on wayland [Jonas; #755097]
+* Fix doubly-scaled cursor on XWayland HiDPI [Jonas; #755099]
+* Stop hiding titlebar buttons in dialogs [Florian; #641630]
+* Add support for fullscreen/unfullscreen animations [Cosimo; #707248]
+* Misc. bug fixes [Rui, Colin, Florian; #743339, #752047, #756074, #756649]
+
+Contributors:
+  Jonas Ådahl, Cosimo Cecchi, Carlos Garnacho, Rui Matos, Florian Müllner,
+  Jasper St. Pierre, Colin Walters, Owen W. Taylor
+
+3.18.0
+======
+* Misc. fixes [Florian, Jonas; #753434]
+
+Contributors:
+  Jonas Ådahl, Florian Müllner
+
+Translations:
+  Rūdolfs Mazurs [lv]
+
+3.17.92
+=======
+* Don't omit the background color for backgrounds that don't fill the screen
+  [Ray; #754476]
+* Fix up key state on FocusIn when running nested [Owen; #753948]
+* Find the right DRM device instead of hardcoding card0 [Marek; #753434]
+* Scale cursor on HiDPI screens [Jonas; #744932]
+* Misc. fixes and cleanups [Lan, Jonas, Javier, Olivier; #754545, #754215,
+  #754621, #754715]
+
+Contributors:
+  Jonas Ådahl, Marek Chalupa, Olivier Fourdan, Javier Jardón, Ting-Wei Lan,
+  Ray Strode, Owen W. Taylor
+
+3.17.91
+=======
+* Send error on pointer-gesture protocol version mismatch [Jonas; #753855]
+* Misc. cleanups [Jonas; #744932]
+
+Contributors:
+  Jonas Ådahl
+
+Translations:
+  Chao-Hsiung Liao [zh_TW], Piotr Drąg [pl]
+
+3.17.90
+=======
+* Fix glitch with some fullscreen apps [Rui; #753020]
+* Fix screen update issue with NVidia driver [Aaron, Rui; #728464]
+* Only call frame callbacks for surfaces that get drawn [Adel; #739163]
+* Misc. bug fixes and cleanups [Jonas, Rui, Ting-Wei; #753222, #752753, #753237,
+  #753380, #744104, #744932]
+
+Contributors:
+  Jonas Ådahl, Adel Gadllah, Carlos Garnacho, Ting-Wei Lan, Rui Matos,
+  Florian Müllner, Aaron Plattner, Jasper St. Pierre
+
+Translations:
+  Akom Chotiphantawanon [th]
+
+3.17.4
+======
+* nested: Allow basic configuration of dummy outputs [Jonas; #747089]
+* Send wl_surface.enter and wl_surface.leave on output changes [Jonas; #744453]
+* Improve HiDPI handling on wayland [Jonas; #745655, #744934]
+* Implement compositor-side animated cursors [Carlos; #752342]
+* Misc. bug fixes [Peter, Marek, Carlos, Matthias, Rui; #750816, #751884,
+  #752248, #752551, #752552, #752673, #752674]
+
+Contributors:
+  Jonas Ådahl, Marek Chalupa, Matthias Clasen, Carlos Garnacho, Peter Hutterer,
+  Rui Matos, Florian Müllner, Jasper St. Pierre
+
+3.17.3
+======
+* Add X11/wayland clipboard interaction [Carlos; #738312]
+* Support VM monitor layout hints on wayland [Thomas; #750363]
+* Misc. bug fixes [Rui, Jonas, Olivier, Carlos, Ting-Wei, Peter, Florian;
+  #749994, #750256, #749716, #748705, #750552, #751036, #750007, #751136,
+  #750552, #751471, #751715, #750680]
+
+Contributors:
+  Jonas Ådahl, Dave Airlie, Cosimo Cecchi, Olivier Fourdan, Carlos Garnacho,
+  Thomas Hellstrom, Peter Hutterer, Ting-Wei Lan, Jasper Lievisse Adriaanse,
+  Rui Matos, Florian Müllner, Jasper St. Pierre
+
+Translations:
+  Marek Černocký [cs], Christian Kirbach [de], Pedro Albuquerque [pt]
+
+3.17.2
+======
+* Honor default value for click method setting [Rui; #746290]
+* Add X11/wayland clipboard interoperation [Carlos; #738312]
+* Misc. bug fixes [Rui; #749076, #749711]
+
+Contributors:
+  Carlos Garnacho, Rui Matos, Jasper St. Pierre
+
+3.17.1
+======
+* Add public method to get neighboring monitor [Florian; #633994]
+* Apply the right settings to the right input devices [Carlos; #747886]
+* Fix scroll button setting [Ondrej; #747967]
+* Add support for modal hint on wayland [Jonas; #745720]
+* Don't reset idle time for non-hardware events [Rui; #748541]
+* Misc. bug fixes [Ray, Rui; #748380, #748478]
+
+Contributors:
+  Jonas Ådahl, Carlos Garnacho, Ondrej Holy, Rui Matos, Florian Müllner,
+  Jasper St. Pierre, Ray Strode, Tomeu Vizoso
+
 3.16.1
 ======
 * Add function to refresh all background instances [Rui; #739178]
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 AC_PREREQ(2.62)

 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [16])
-m4_define([mutter_micro_version], [1])
+m4_define([mutter_minor_version], [19])
+m4_define([mutter_micro_version], [4])

 m4_define([mutter_version],
          [mutter_major_version.mutter_minor_version.mutter_micro_version])
@@ -46,37 +46,25 @@ IT_PROG_INTLTOOL([0.41])
 AC_PROG_CC
 AC_PROG_CC_C_O
 AC_PROG_INSTALL
+AC_PROG_SED
 AC_HEADER_STDC
 PKG_PROG_PKG_CONFIG([0.21])

 # Sets GLIB_GENMARSHAL and GLIB_MKENUMS
 AM_PATH_GLIB_2_0()

-#### Integer sizes
-
-AC_CHECK_SIZEOF(char)
-AC_CHECK_SIZEOF(short)
-AC_CHECK_SIZEOF(long)
-AC_CHECK_SIZEOF(int)
-AC_CHECK_SIZEOF(void *)
-AC_CHECK_SIZEOF(long long)
-AC_CHECK_SIZEOF(__int64)
-
-## byte order
-AC_C_BIGENDIAN
-
 CANBERRA_GTK=libcanberra-gtk3
 CANBERRA_GTK_VERSION=0.26

 CLUTTER_PACKAGE=clutter-1.0

 MUTTER_PC_MODULES="
-   gtk+-3.0 >= 3.9.11
+   gtk+-3.0 >= 3.19.8
   gio-unix-2.0 >= 2.35.1
   pango >= 1.2.0
   cairo >= 1.10.0
-   gsettings-desktop-schemas >= 3.15.92
-   $CLUTTER_PACKAGE >= 1.21.3
+   gsettings-desktop-schemas >= 3.19.3
+   $CLUTTER_PACKAGE >= 1.25.1
   cogl-1.0 >= 1.17.1
   upower-glib >= 0.99.0
   gnome-desktop-3.0
@@ -232,6 +220,10 @@ AS_IF([test "$have_wayland" = "yes"], [
    [AC_MSG_ERROR([Could not find wayland-scanner in your PATH, required for parsing wayland extension protocols])])
  AC_SUBST([WAYLAND_SCANNER])
  AC_DEFINE([HAVE_WAYLAND],[1],[Define if you want to enable Wayland support])
+
+  PKG_CHECK_MODULES(WAYLAND_PROTOCOLS, [wayland-protocols >= 1.1],
+		    [ac_wayland_protocols_pkgdatadir=`$PKG_CONFIG --variable=pkgdatadir wayland-protocols`])
+  AC_SUBST(WAYLAND_PROTOCOLS_DATADIR, $ac_wayland_protocols_pkgdatadir)
 ])
 AM_CONDITIONAL([HAVE_WAYLAND],[test "$have_wayland" = "yes"])

@@ -284,6 +276,8 @@ AC_CHECK_LIB(Xrandr, XRRUpdateConfiguration,

 if test "x$found_randr" = "xyes"; then
   AC_DEFINE(HAVE_RANDR, , [Have the Xrandr extension library])
+   PKG_CHECK_EXISTS([xrandr >= 1.5.0],
+                 AC_DEFINE([HAVE_XRANDR15],[1],[Define if you have support for XRandR 1.5 or greater]))
 fi

 MUTTER_LIBS="$MUTTER_LIBS $RANDR_LIBS $X_LIBS $X_PRE_LIBS -lX11 $X_EXTRA_LIBS -lm"
@@ -330,7 +324,10 @@ if test "x$enable_debug" = "xyes"; then
 	CFLAGS="$CFLAGS -g -O"
 fi

-GTK_DOC_CHECK([1.15], [--flavour no-tmpl])
+AC_CHECK_DECL([GL_EXT_x11_sync_object],
+              [],
+              [AC_MSG_ERROR([GL_EXT_x11_sync_object definition not found, please update your GL headers])],
+              [#include <GL/glx.h>])

 #### Warnings (last since -Werror can disturb other tests)

@@ -403,8 +400,6 @@ Makefile
 data/Makefile
 doc/Makefile
 doc/man/Makefile
-doc/reference/Makefile
-doc/reference/meta-docs.sgml
 src/Makefile
 src/libmutter.pc
 src/compositor/plugins/Makefile
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -1,6 +1,5 @@
 desktopfiles_in_files = \
-	mutter.desktop.in \
-	mutter-wayland.desktop.in
+	mutter.desktop.in
 desktopfilesdir = $(datadir)/applications
 desktopfiles_DATA = $(desktopfiles_in_files:.desktop.in=.desktop)

--- a/data/mutter-wayland.desktop.in
+++ b/data/mutter-wayland.desktop.in
@@ -1,17 +0,0 @@
-[Desktop Entry]
-Type=Application
-_Name=Mutter (wayland compositor)
-Exec=mutter --wayland --display-server
-NoDisplay=true
-# name of loadable control center module
-X-GNOME-WMSettingsModule=metacity
-# name we put on the WM spec check window
-X-GNOME-WMName=Mutter
-# back compat only 
-X-GnomeWMSettingsLibrary=metacity
-X-GNOME-Bugzilla-Bugzilla=GNOME
-X-GNOME-Bugzilla-Product=mutter
-X-GNOME-Bugzilla-Component=general
-X-GNOME-Autostart-Phase=WindowManager
-X-GNOME-Provides=windowmanager
-X-GNOME-Autostart-Notify=true
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,4 +1,4 @@
-SUBDIRS = man reference
+SUBDIRS = man

 EXTRA_DIST = dialogs.txt code-overview.txt \
 	how-to-get-focus-right.txt rationales.txt
--- a/doc/reference/Makefile.am
+++ b/doc/reference/Makefile.am
@@ -1,183 +0,0 @@
-## Process this file with automake to produce Makefile.in
-
-# We require automake 1.6 at least.
-AUTOMAKE_OPTIONS = 1.6
-
-# This is a blank Makefile.am for using gtk-doc.
-# Copy this to your project's API docs directory and modify the variables to
-# suit your project. See the GTK+ Makefiles in gtk+/docs/reference for examples
-# of using the various options.
-
-# The name of the module, e.g. 'glib'.
-DOC_MODULE=meta
-
-# Uncomment for versioned docs and specify the version of the module, e.g. '2'.
-#DOC_MODULE_VERSION=2
-
-
-# The top-level SGML file. You can change this if you want to.
-DOC_MAIN_SGML_FILE=$(DOC_MODULE)-docs.sgml
-
-# Directories containing the source code, relative to $(srcdir).
-# gtk-doc will search all .c and .h files beneath these paths
-# for inline comments documenting functions and macros.
-# e.g. DOC_SOURCE_DIR=../../../gtk ../../../gdk
-DOC_SOURCE_DIR=../../src/
-
-# Extra options to pass to gtkdoc-scangobj. Not normally needed.
-SCANGOBJ_OPTIONS=
-
-# Extra options to supply to gtkdoc-scan.
-# e.g. SCAN_OPTIONS=--deprecated-guards="GTK_DISABLE_DEPRECATED"
-SCAN_OPTIONS=--rebuild-types
-
-# Extra options to supply to gtkdoc-mkdb.
-# e.g. MKDB_OPTIONS=--xml-mode --output-format=xml
-MKDB_OPTIONS=--xml-mode --output-format=xml
-
-# Extra options to supply to gtkdoc-mktmpl
-# e.g. MKTMPL_OPTIONS=--only-section-tmpl
-MKTMPL_OPTIONS=
-
-# Extra options to supply to gtkdoc-mkhtml
-MKHTML_OPTIONS=
-
-# Extra options to supply to gtkdoc-fixref. Not normally needed.
-# e.g. FIXXREF_OPTIONS=--extra-dir=../gdk-pixbuf/html --extra-dir=../gdk/html
-FIXXREF_OPTIONS=
-
-# Used for dependencies. The docs will be rebuilt if any of these change.
-# e.g. HFILE_GLOB=$(top_srcdir)/gtk/*.h
-# e.g. CFILE_GLOB=$(top_srcdir)/gtk/*.c
-HFILE_GLOB=$(top_srcdir)/src/*/*.h
-CFILE_GLOB=$(top_srcdir)/src/*/*.c
-
-# Extra header to include when scanning, which are not under DOC_SOURCE_DIR
-# e.g. EXTRA_HFILES=$(top_srcdir}/contrib/extra.h
-EXTRA_HFILES=
-
-# Header files or dirs to ignore when scanning. Use base file/dir names
-# e.g. IGNORE_HFILES=gtkdebug.h gtkintl.h private_code
-IGNORE_HFILES= \
-	async-getprop.h \
-	atoms.h \
-	bell.h \
-	boxes-private.h \
-	clutter-utils.h \
-	cogl-utils.h \
-	compositor-private.h \
-	constraints.h \
-	core.h \
-	display-private.h \
-	draw-workspace.h \
-	edge-resistance.h \
-	eventqueue.h \
-	frame.h \
-	frames.h \
-	group-private.h \
-	group-props.h \
-	iconcache.h \
-	inlinepixbufs.h \
-	keybindings-private.h \
-	meta-background-actor-private.h \
-	meta-background-group-private.h \
-	meta-dbus-login1.h \
-	meta-module.h \
-	meta-plugin-manager.h \
-	meta-shadow-factory-private.h \
-	meta-texture-rectangle.h \
-	meta-texture-tower.h \
-	meta-window-actor-private.h \
-	meta-window-group.h \
-	meta-window-shape.h \
-	mutter-enum-types.h \
-	mutter-Xatomtype.h \
-	place.h \
-	preview-widget.h \
-	region-utils.h \
-	resizepopup.h \
-	screen-private.h \
-	session.h \
-	stack.h \
-	stack-tracker.h \
-	stamp-mutter-enum-types.h \
-	tabpopup.h \
-	theme.h \
-	theme-private.h \
-	tile-preview.h \
-	ui.h \
-	window-private.h \
-	window-props.h \
-	workspace-private.h \
-	xprops.h \
-	$(NULL)
-
-if !HAVE_NATIVE_BACKEND
-IGNORE_HFILES+= \
-	meta-backend-native.h \
-	meta-barrier-native.h \
-	meta-cursor-renderer-native.h \
-	meta-idle-monitor-native.h \
-	meta-input-settings-native.h \
-	meta-monitor-manager-kms.h \
-	$(NULL)
-endif
-
-if !HAVE_WAYLAND
-IGNORE_HFILES += \
-	meta-surface-actor-wayland.h	\
-	wayland				\
-	$(NULL)
-endif
-
-MKDB_OPTIONS+=--ignore-files="$(IGNORE_HFILES)"
-
-# Images to copy into HTML directory.
-# e.g. HTML_IMAGES=$(top_srcdir)/gtk/stock-icons/stock_about_24.png
-HTML_IMAGES=
-
-# Extra SGML files that are included by $(DOC_MAIN_SGML_FILE).
-# e.g. content_files=running.sgml building.sgml changes-2.0.sgml
-content_files= \
-	mutter-overview.xml \
-	running-mutter.xml \
-	$(NULL)
-
-# SGML files where gtk-doc abbrevations (#GtkWidget) are expanded
-# These files must be listed here *and* in content_files
-# e.g. expand_content_files=running.sgml
-expand_content_files= \
-	mutter-overview.xml \
-	running-mutter.xml \
-	$(NULL)
-
-# CFLAGS and LDFLAGS for compiling gtkdoc-scangobj with your library.
-# Only needed if you are using gtkdoc-scangobj to dynamically query widget
-# signals and properties.
-# e.g. GTKDOC_CFLAGS=-I$(top_srcdir) -I$(top_builddir) $(GTK_DEBUG_FLAGS)
-# e.g. GTKDOC_LIBS=$(top_builddir)/gtk/$(gtktargetlib)
-GTKDOC_CFLAGS=$(MUTTER_CFLAGS)
-GTKDOC_LIBS=$(MUTTER_LIBS) $(top_builddir)/src/libmutter.la
-
-# This includes the standard gtk-doc make rules, copied by gtkdocize.
-include $(top_srcdir)/gtk-doc.make
-
-# Other files to distribute
-# e.g. EXTRA_DIST += version.xml.in
-EXTRA_DIST +=
-
-# Files not to distribute
-# for --rebuild-types in $(SCAN_OPTIONS), e.g. $(DOC_MODULE).types
-# for --rebuild-sections in $(SCAN_OPTIONS) e.g. $(DOC_MODULE)-sections.txt
-DISTCLEANFILES = $(DOC_MODULES).types
-
-# Comment this out if you want 'make check' to test you doc status
-# and run some sanity checks
-if ENABLE_GTK_DOC
-TESTS_ENVIRONMENT = cd $(srcdir) && \
-  DOC_MODULE=$(DOC_MODULE) DOC_MAIN_SGML_FILE=$(DOC_MAIN_SGML_FILE) \
-  SRCDIR=$(abs_srcdir) BUILDDIR=$(abs_builddir)
-#TESTS = $(GTKDOC_CHECK)
-endif
-
-include $(top_srcdir)/git.mk
--- a/doc/reference/meta-docs.sgml.in
+++ b/doc/reference/meta-docs.sgml.in
@@ -1,58 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
-               "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"
-[
-  <!ENTITY % local.common.attrib "xmlns:xi  CDATA  #FIXED 'http://www.w3.org/2003/XInclude'">
-  <!ENTITY version "@VERSION@">
-]>
-<book id="index">
-  <bookinfo>
-    <title>Mutter Reference Manual</title>
-    <releaseinfo>
-      This document is for Mutter &version;.
-      The latest version of this documentation can be found on-line at
-      <ulink role="online-location" url="http://developer.gnome.org/meta/">http://developer.gnome.org/meta/</ulink>.
-    </releaseinfo>
-  </bookinfo>
-
-  <xi:include href="xml/mutter-overview.xml"/>
-  <xi:include href="xml/running-mutter.xml"/>
-
-  <part id="core-reference">
-    <title>Mutter Core Reference</title>
-    <xi:include href="xml/main.xml"/>
-    <xi:include href="xml/common.xml"/>
-    <xi:include href="xml/prefs.xml"/>
-    <xi:include href="xml/util.xml"/>
-    <xi:include href="xml/errors.xml"/>
-    <xi:include href="xml/meta-plugin.xml"/>
-    <xi:include href="xml/barrier.xml"/>
-    <xi:include href="xml/boxes.xml"/>
-    <xi:include href="xml/compositor.xml"/>
-    <xi:include href="xml/display.xml"/>
-    <xi:include href="xml/group.xml"/>
-    <xi:include href="xml/keybindings.xml"/>
-    <xi:include href="xml/meta-background-actor.xml"/>
-    <xi:include href="xml/meta-shadow-factory.xml"/>
-    <xi:include href="xml/meta-shaped-texture.xml"/>
-    <xi:include href="xml/meta-window-actor.xml"/>
-    <xi:include href="xml/screen.xml"/>
-    <xi:include href="xml/window.xml"/>
-    <xi:include href="xml/workspace.xml"/>
-  </part>
-
-  <chapter id="object-tree">
-    <title>Object Hierarchy</title>
-     <xi:include href="xml/tree_index.sgml"/>
-  </chapter>
-  <index id="api-index-full">
-    <title>API Index</title>
-    <xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
-  </index>
-  <index id="deprecated-api-index" role="deprecated">
-    <title>Index of deprecated API</title>
-    <xi:include href="xml/api-index-deprecated.xml"><xi:fallback /></xi:include>
-  </index>
-
-  <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
-</book>
--- a/doc/reference/meta-sections.txt
+++ b/doc/reference/meta-sections.txt
@@ -1,674 +0,0 @@
-<SECTION>
-<FILE>barrier</FILE>
-<TITLE>MetaBarrier</TITLE>
-MetaBarrier
-MetaBarrierClass
-meta_barrier_is_active
-meta_barrier_destroy
-meta_barrier_release
-MetaBarrierDirection
-MetaBarrierEvent
-<SUBSECTION Standard>
-META_BARRIER
-META_BARRIER_CLASS
-META_BARRIER_GET_CLASS
-META_IS_BARRIER
-META_IS_BARRIER_CLASS
-META_TYPE_BARRIER
-META_TYPE_BARRIER_EVENT
-MetaBarrierPrivate
-meta_barrier_event_get_type
-meta_barrier_get_type
-</SECTION>
-
-<SECTION>
-<FILE>boxes</FILE>
-MetaRectangle
-MetaStrut
-MetaEdgeType
-MetaEdge
-meta_rectangle_copy
-meta_rectangle_free
-meta_rect
-meta_rectangle_area
-meta_rectangle_intersect
-meta_rectangle_equal
-meta_rectangle_union
-meta_rectangle_overlap
-meta_rectangle_vert_overlap
-meta_rectangle_horiz_overlap
-meta_rectangle_could_fit_rect
-meta_rectangle_contains_rect
-<SUBSECTION Standard>
-META_TYPE_RECTANGLE
-meta_rectangle_get_type
-</SECTION>
-
-<SECTION>
-<FILE>common</FILE>
-META_VIRTUAL_CORE_POINTER_ID
-META_VIRTUAL_CORE_KEYBOARD_ID
-MetaFrameFlags
-MetaMenuOp
-MetaWindowMenuFunc
-MetaGrabOp
-MetaCursor
-MetaFrameType
-MetaVirtualModifier
-MetaDirection
-MetaMotionDirection
-MetaSide
-MetaButtonFunction
-MAX_BUTTONS_PER_CORNER
-MetaButtonLayout
-MetaFrameBorders
-meta_frame_borders_clear
-META_ICON_WIDTH
-META_ICON_HEIGHT
-META_MINI_ICON_WIDTH
-META_MINI_ICON_HEIGHT
-META_DEFAULT_ICON_NAME
-META_PRIORITY_RESIZE
-META_PRIORITY_BEFORE_REDRAW
-META_PRIORITY_REDRAW
-META_PRIORITY_PREFS_NOTIFY
-POINT_IN_RECT
-MetaStackLayer
-MetaWindowMenu
-MetaResizePopup
-</SECTION>
-
-<SECTION>
-<FILE>compositor</FILE>
-MetaCompEffect
-MetaCompositor
-meta_compositor_new
-meta_compositor_destroy
-meta_compositor_manage_screen
-meta_compositor_unmanage_screen
-meta_compositor_window_shape_changed
-meta_compositor_process_event
-meta_compositor_filter_keybinding
-meta_compositor_add_window
-meta_compositor_remove_window
-meta_compositor_show_window
-meta_compositor_hide_window
-meta_compositor_switch_workspace
-meta_compositor_maximize_window
-meta_compositor_unmaximize_window
-meta_compositor_sync_window_geometry
-meta_compositor_set_updates_frozen
-meta_compositor_queue_frame_drawn
-meta_compositor_sync_stack
-meta_compositor_sync_screen_size
-meta_compositor_flash_screen
-meta_get_stage_for_screen
-meta_get_overlay_group_for_screen
-meta_get_overlay_window
-meta_get_window_actors
-meta_get_window_group_for_screen
-meta_get_top_window_group_for_screen
-meta_disable_unredirect_for_screen
-meta_enable_unredirect_for_screen
-meta_set_stage_input_region
-meta_empty_stage_input_region
-</SECTION>
-
-<SECTION>
-<FILE>display</FILE>
-MetaTabList
-MetaTabShowType
-meta_XFree
-meta_display_get_compositor_version
-meta_display_get_xinput_opcode
-meta_display_supports_extended_barriers
-meta_display_get_xdisplay
-meta_display_get_compositor
-meta_display_get_screens
-meta_display_has_shape
-meta_display_screen_for_root
-meta_display_get_focus_window
-meta_display_xwindow_is_a_no_focus_window
-meta_display_get_damage_event_base
-meta_display_get_shape_event_base
-meta_display_xserver_time_is_before
-meta_display_get_last_user_time
-meta_display_get_current_time
-meta_display_get_current_time_roundtrip
-meta_display_get_ignored_modifier_mask
-meta_display_get_tab_list
-meta_display_get_tab_next
-meta_display_get_tab_current
-meta_display_begin_grab_op
-meta_display_end_grab_op
-meta_display_get_grab_op
-meta_display_add_keybinding
-meta_display_remove_keybinding
-meta_display_get_keybinding_action
-meta_display_set_input_focus_window
-meta_display_focus_the_no_focus_window
-meta_display_sort_windows_by_stacking
-meta_display_get_leader_window
-meta_display_add_ignored_crossing_serial
-meta_display_unmanage_screen
-meta_display_clear_mouse_mode
-MetaDisplay
-MetaDisplayClass
-<SUBSECTION Standard>
-META_DISPLAY
-META_DISPLAY_CLASS
-META_DISPLAY_GET_CLASS
-META_IS_DISPLAY
-META_IS_DISPLAY_CLASS
-META_TYPE_DISPLAY
-meta_display_get_type
-</SECTION>
-
-<SECTION>
-<FILE>errors</FILE>
-meta_error_trap_push
-meta_error_trap_pop
-meta_error_trap_push_with_return
-meta_error_trap_pop_with_return
-</SECTION>
-
-<SECTION>
-<FILE>group</FILE>
-MetaGroup
-meta_window_get_group
-meta_window_compute_group
-meta_window_shutdown_group
-meta_window_group_leader_changed
-meta_display_lookup_group
-meta_group_list_windows
-meta_group_update_layers
-meta_group_get_startup_id
-meta_group_get_size
-meta_group_property_notify
-</SECTION>
-
-<SECTION>
-<FILE>keybindings</FILE>
-MetaKeyBinding
-META_TYPE_KEY_BINDING
-meta_key_binding_get_name
-meta_key_binding_get_modifiers
-meta_key_binding_get_mask
-meta_key_binding_is_builtin
-meta_keybindings_set_custom_handler
-meta_screen_ungrab_all_keys
-meta_screen_grab_all_keys
-</SECTION>
-
-<SECTION>
-<FILE>main</FILE>
-meta_get_option_context
-meta_init
-meta_run
-meta_get_replace_current_wm
-meta_set_wm_name
-meta_set_gnome_wm_keybindings
-MetaExitCode
-meta_exit
-meta_quit
-</SECTION>
-
-<SECTION>
-<FILE>meta-background</FILE>
-<TITLE>MetaBackground</TITLE>
-MetaBackgroundEffects
-MetaBackground
-MetaBackgroundClass
-meta_background_new
-meta_background_copy
-meta_background_load_gradient
-meta_background_load_color
-meta_background_load_still_frame
-meta_background_load_file_async
-meta_background_load_file_finish
-meta_background_get_filename
-meta_background_get_style
-meta_background_get_shading
-meta_background_get_color
-meta_background_get_second_color
-<SUBSECTION Standard>
-META_BACKGROUND
-META_BACKGROUND_CLASS
-META_BACKGROUND_GET_CLASS
-META_IS_BACKGROUND
-META_IS_BACKGROUND_CLASS
-META_TYPE_BACKGROUND
-MetaBackgroundPrivate
-meta_background_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-background-actor</FILE>
-<TITLE>MetaBackgroundActor</TITLE>
-MetaBackgroundActor
-MetaBackgroundActorClass
-meta_background_actor_new_for_screen
-MetaSnippetHook
-meta_background_actor_add_glsl_snippet
-meta_background_actor_set_uniform_float
-<SUBSECTION Standard>
-META_BACKGROUND_ACTOR
-META_BACKGROUND_ACTOR_CLASS
-META_BACKGROUND_ACTOR_GET_CLASS
-META_IS_BACKGROUND_ACTOR
-META_IS_BACKGROUND_ACTOR_CLASS
-META_TYPE_BACKGROUND_ACTOR
-MetaBackgroundActorPrivate
-meta_background_actor_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-background-group</FILE>
-<TITLE>MetaBackgroundGroup</TITLE>
-MetaBackgroundGroupClass
-meta_background_group_new
-<SUBSECTION Standard>
-META_BACKGROUND_GROUP
-META_BACKGROUND_GROUP_CLASS
-META_BACKGROUND_GROUP_GET_CLASS
-META_IS_BACKGROUND_GROUP
-META_IS_BACKGROUND_GROUP_CLASS
-META_TYPE_BACKGROUND_GROUP
-MetaBackgroundGroupPrivate
-meta_background_group_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-plugin</FILE>
-<TITLE>MetaPlugin</TITLE>
-MetaPlugin
-MetaPluginClass
-MetaPluginInfo
-meta_plugin_running
-meta_plugin_debug_mode
-meta_plugin_get_info
-MetaPluginVersion
-META_PLUGIN_DECLARE
-meta_plugin_switch_workspace_completed
-meta_plugin_minimize_completed
-meta_plugin_unminimize_completed
-meta_plugin_maximize_completed
-meta_plugin_unmaximize_completed
-meta_plugin_map_completed
-meta_plugin_destroy_completed
-MetaModalOptions
-meta_plugin_begin_modal
-meta_plugin_end_modal
-meta_plugin_get_screen
-meta_plugin_manager_set_plugin_type
-<SUBSECTION Standard>
-META_IS_PLUGIN
-META_IS_PLUGIN_CLASS
-META_PLUGIN
-META_PLUGIN_CLASS
-META_PLUGIN_GET_CLASS
-META_TYPE_PLUGIN
-MetaPluginPrivate
-meta_plugin_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-shadow-factory</FILE>
-MetaShadowParams
-meta_shadow_factory_get_default
-meta_shadow_factory_set_params
-meta_shadow_factory_get_params
-MetaShadowFactory
-MetaShadowFactoryClass
-<SUBSECTION Standard>
-META_IS_SHADOW_FACTORY
-META_IS_SHADOW_FACTORY_CLASS
-META_SHADOW_FACTORY
-META_SHADOW_FACTORY_CLASS
-META_SHADOW_FACTORY_GET_CLASS
-META_TYPE_SHADOW_FACTORY
-meta_shadow_factory_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-shaped-texture</FILE>
-<TITLE>MetaShapedTexture</TITLE>
-MetaShapedTexture
-MetaShapedTextureClass
-meta_shaped_texture_new
-meta_shaped_texture_set_create_mipmaps
-meta_shaped_texture_update_area
-meta_shaped_texture_set_pixmap
-meta_shaped_texture_get_texture
-meta_shaped_texture_set_mask_texture
-meta_shaped_texture_set_clip_region
-meta_shaped_texture_get_image
-<SUBSECTION Standard>
-META_IS_SHAPED_TEXTURE
-META_IS_SHAPED_TEXTURE_CLASS
-META_SHAPED_TEXTURE
-META_SHAPED_TEXTURE_CLASS
-META_SHAPED_TEXTURE_GET_CLASS
-META_TYPE_SHAPED_TEXTURE
-MetaShapedTexturePrivate
-meta_shaped_texture_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-window-actor</FILE>
-<TITLE>MetaWindowActor</TITLE>
-MetaWindowActor
-MetaWindowActorClass
-meta_window_actor_get_x_window
-meta_window_actor_get_workspace
-meta_window_actor_get_meta_window
-meta_window_actor_get_texture
-meta_window_actor_is_override_redirect
-meta_window_actor_get_description
-meta_window_actor_showing_on_its_workspace
-meta_window_actor_is_destroyed
-<SUBSECTION Standard>
-META_IS_WINDOW_ACTOR
-META_IS_WINDOW_ACTOR_CLASS
-META_TYPE_WINDOW_ACTOR
-META_WINDOW_ACTOR
-META_WINDOW_ACTOR_CLASS
-META_WINDOW_ACTOR_GET_CLASS
-MetaWindowActorPrivate
-meta_window_actor_get_type
-</SECTION>
-
-<SECTION>
-<FILE>meta-cullable</FILE>
-<TITLE>MetaCullable</TITLE>
-MetaCullable
-MetaCullableInterface
-meta_cullable_cull_out
-meta_cullable_reset_culling
-meta_cullable_cull_out_children
-meta_cullable_reset_culling_children
-<SUBSECTION Standard>
-META_TYPE_CULLABLE
-META_CULLABLE
-META_IS_CULLABLE
-META_CULLABLE_GET_IFACE
-meta_cullable_get_type
-</SECTION>
-
-<SECTION>
-<FILE>prefs</FILE>
-MetaPreference
-MetaPrefsChangedFunc
-meta_prefs_add_listener
-meta_prefs_remove_listener
-meta_prefs_init
-meta_prefs_override_preference_schema
-meta_preference_to_string
-meta_prefs_get_mouse_button_mods
-meta_prefs_get_mouse_button_resize
-meta_prefs_get_mouse_button_menu
-meta_prefs_get_focus_mode
-meta_prefs_get_focus_new_windows
-meta_prefs_get_attach_modal_dialogs
-meta_prefs_get_raise_on_click
-meta_prefs_get_theme
-meta_prefs_get_titlebar_font
-meta_prefs_get_num_workspaces
-meta_prefs_get_dynamic_workspaces
-meta_prefs_get_disable_workarounds
-meta_prefs_get_auto_raise
-meta_prefs_get_auto_raise_delay
-meta_prefs_get_focus_change_on_pointer_rest
-meta_prefs_get_gnome_accessibility
-meta_prefs_get_gnome_animations
-meta_prefs_get_edge_tiling
-meta_prefs_get_auto_maximize
-meta_prefs_get_button_layout
-meta_prefs_get_action_double_click_titlebar
-meta_prefs_get_action_middle_click_titlebar
-meta_prefs_get_action_right_click_titlebar
-meta_prefs_set_num_workspaces
-meta_prefs_get_workspace_name
-meta_prefs_change_workspace_name
-meta_prefs_get_cursor_theme
-meta_prefs_get_cursor_size
-meta_prefs_get_compositing_manager
-meta_prefs_get_force_fullscreen
-meta_prefs_set_force_fullscreen
-meta_prefs_get_workspaces_only_on_primary
-meta_prefs_get_no_tab_popup
-meta_prefs_set_no_tab_popup
-meta_prefs_get_draggable_border_width
-meta_prefs_get_ignore_request_hide_titlebar
-meta_prefs_set_ignore_request_hide_titlebar
-MetaKeyBindingAction
-MetaKeyBindingFlags
-MetaKeyCombo
-MetaKeyHandlerFunc
-meta_prefs_get_keybindings
-meta_prefs_get_keybinding_action
-meta_prefs_get_window_binding
-meta_prefs_get_overlay_binding
-meta_prefs_get_visual_bell
-meta_prefs_bell_is_audible
-meta_prefs_get_visual_bell_type
-MetaKeyHandler
-<SUBSECTION Standard>
-meta_key_binding_get_type
-</SECTION>
-
-<SECTION>
-<FILE>screen</FILE>
-MetaScreen
-MetaScreenClass
-meta_screen_get_screen_number
-meta_screen_get_display
-meta_screen_get_xroot
-meta_screen_get_size
-meta_screen_get_compositor_data
-meta_screen_set_compositor_data
-meta_screen_for_x_screen
-meta_screen_set_cm_selection
-meta_screen_unset_cm_selection
-meta_screen_get_startup_sequences
-meta_screen_get_workspaces
-meta_screen_get_n_workspaces
-meta_screen_get_workspace_by_index
-meta_screen_remove_workspace
-meta_screen_append_new_workspace
-meta_screen_get_active_workspace_index
-meta_screen_get_active_workspace
-meta_screen_get_n_monitors
-meta_screen_get_primary_monitor
-meta_screen_get_current_monitor
-meta_screen_get_monitor_geometry
-meta_screen_get_monitor_index_for_rect
-meta_screen_focus_default_window
-MetaScreenCorner
-meta_screen_override_workspace_layout
-<SUBSECTION Standard>
-META_IS_SCREEN
-META_IS_SCREEN_CLASS
-META_SCREEN
-META_SCREEN_CLASS
-META_SCREEN_GET_CLASS
-META_TYPE_SCREEN
-meta_screen_get_type
-</SECTION>
-
-<SECTION>
-<FILE>util</FILE>
-meta_is_verbose
-meta_set_verbose
-meta_is_debugging
-meta_set_debugging
-meta_is_syncing
-meta_set_syncing
-meta_set_replace_current_wm
-meta_debug_spew_real
-meta_verbose_real
-meta_bug
-meta_warning
-meta_fatal
-MetaDebugTopic
-meta_topic_real
-meta_add_verbose_topic
-meta_remove_verbose_topic
-meta_push_no_msg_prefix
-meta_pop_no_msg_prefix
-meta_unsigned_long_equal
-meta_unsigned_long_hash
-meta_frame_type_to_string
-meta_gravity_to_string
-_
-N_
-meta_g_utf8_strndup
-meta_free_gslist_and_elements
-meta_show_dialog
-meta_debug_spew
-meta_verbose
-meta_topic
-MetaLaterType
-meta_later_add
-meta_later_remove
-</SECTION>
-
-<SECTION>
-<FILE>window</FILE>
-MetaWindow
-MetaWindowClass
-MetaWindowType
-MetaMaximizeFlags
-meta_window_get_frame
-meta_window_has_focus
-meta_window_appears_focused
-meta_window_is_shaded
-meta_window_is_monitor_sized
-meta_window_is_override_redirect
-meta_window_is_skip_taskbar
-meta_window_get_rect
-meta_window_get_buffer_rect
-meta_window_get_frame_rect
-meta_window_client_rect_to_frame_rect
-meta_window_frame_rect_to_client_rect
-meta_window_get_screen
-meta_window_get_display
-meta_window_get_xwindow
-meta_window_get_window_type
-meta_window_get_window_type_atom
-meta_window_get_workspace
-meta_window_get_monitor
-meta_window_is_on_all_workspaces
-meta_window_located_on_workspace
-meta_window_is_hidden
-meta_window_activate
-meta_window_activate_with_workspace
-meta_window_get_description
-meta_window_get_wm_class
-meta_window_get_wm_class_instance
-meta_window_showing_on_its_workspace
-meta_window_get_gtk_application_id
-meta_window_get_gtk_unique_bus_name
-meta_window_get_gtk_application_object_path
-meta_window_get_gtk_window_object_path
-meta_window_get_gtk_app_menu_object_path
-meta_window_get_gtk_menubar_object_path
-meta_window_move
-meta_window_move_frame
-meta_window_move_resize_frame
-meta_window_move_to_monitor
-meta_window_resize
-meta_window_set_demands_attention
-meta_window_unset_demands_attention
-meta_window_get_startup_id
-meta_window_change_workspace_by_index
-meta_window_change_workspace
-meta_window_get_compositor_private
-meta_window_set_compositor_private
-meta_window_configure_notify
-meta_window_get_role
-meta_window_get_layer
-meta_window_find_root_ancestor
-meta_window_is_ancestor_of_transient
-MetaWindowForeachFunc
-meta_window_foreach_transient
-meta_window_foreach_ancestor
-meta_window_get_maximized
-meta_window_is_fullscreen
-meta_window_is_on_primary_monitor
-meta_window_requested_bypass_compositor
-meta_window_requested_dont_bypass_compositor
-meta_window_is_mapped
-meta_window_toplevel_is_mapped
-meta_window_get_icon_geometry
-meta_window_set_icon_geometry
-meta_window_maximize
-meta_window_unmaximize
-meta_window_minimize
-meta_window_unminimize
-meta_window_raise
-meta_window_lower
-meta_window_get_title
-meta_window_get_transient_for
-meta_window_get_transient_for_as_xid
-meta_window_delete
-meta_window_get_stable_sequence
-meta_window_get_user_time
-meta_window_get_pid
-meta_window_get_client_machine
-meta_window_is_remote
-meta_window_is_modal
-meta_window_is_attached_dialog
-meta_window_get_mutter_hints
-meta_window_get_frame_type
-meta_window_get_frame_bounds
-meta_window_get_tile_match
-meta_window_make_fullscreen
-meta_window_unmake_fullscreen
-meta_window_make_above
-meta_window_unmake_above
-meta_window_shade
-meta_window_unshade
-meta_window_stick
-meta_window_unstick
-meta_window_kill
-meta_window_focus
-meta_window_check_alive
-meta_window_get_work_area_current_monitor
-meta_window_get_work_area_for_monitor
-meta_window_get_work_area_all_monitors
-meta_window_begin_grab_op
-<SUBSECTION Standard>
-META_IS_WINDOW
-META_IS_WINDOW_CLASS
-META_TYPE_WINDOW
-META_WINDOW
-META_WINDOW_CLASS
-META_WINDOW_GET_CLASS
-meta_window_get_type
-</SECTION>
-
-<SECTION>
-<FILE>workspace</FILE>
-MetaWorkspace
-MetaWorkspaceClass
-meta_workspace_index
-meta_workspace_get_screen
-meta_workspace_list_windows
-meta_workspace_get_work_area_for_monitor
-meta_workspace_get_work_area_all_monitors
-meta_workspace_activate
-meta_workspace_activate_with_focus
-meta_workspace_update_window_hints
-meta_workspace_set_builtin_struts
-meta_workspace_get_neighbor
-<SUBSECTION Standard>
-META_IS_WORKSPACE
-META_IS_WORKSPACE_CLASS
-META_TYPE_WORKSPACE
-META_WORKSPACE
-META_WORKSPACE_CLASS
-META_WORKSPACE_GET_CLASS
-meta_workspace_get_type
-</SECTION>
-
--- a/doc/reference/mutter-overview.xml
+++ b/doc/reference/mutter-overview.xml
@@ -1,15 +0,0 @@
-<part id="mutter-overview">
-
-  <title>Overview</title>
-
-  <partintro>
-
-    <para>Mutter is a GObject-based library for creating compositing window managers.</para>
-
-    <para>Compositors that wish to use Mutter must implement a subclass of #MetaPlugin and register it with meta_plugin_manager_set_plugin_type() before calling meta_init() but after g_type_init().</para>
-
-    <para>#MetaPlugin provides virtual functions that allow to override default behavior in the window management code, such as the effect to perform when a window is created or when switching workspaces.</para>
-
-  </partintro>
-
-</part>
--- a/doc/reference/running-mutter.xml
+++ b/doc/reference/running-mutter.xml
@@ -1,100 +0,0 @@
-<part id="running-mutter">
-
-  <title>Running Mutter</title>
-
-  <partintro>
-
-    <section id="environment-variables">
-      <title>Environment Variables</title>
-
-      <para>
-        Mutter automatically checks environment variables during
-        its initialization. These environment variables are meant
-        as debug tools or overrides for default behaviours:
-      </para>
-
-      <variablelist>
-        <varlistentry>
-          <term>MUTTER_VERBOSE</term>
-          <listitem>
-            <para>Enable verbose mode, in which more information is printed to the console. Mutter needs to be built with the --enable-verbose-mode option (enabled by default). For more fine-grained control of the output, see meta_add_verbose_topic().</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DEBUG</term>
-          <listitem>
-            <para>Traps and prints X errors to the console.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_G_FATAL_WARNINGS</term>
-          <listitem>
-            <para>Causes any logging from the domains Mutter, Gtk, Gdk, Pango or GLib to terminate the process (only when using the log functions in GLib).</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_USE_LOGFILE</term>
-          <listitem>
-            <para>Log all messages to a temporary file.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DEBUG_XINERAMA</term>
-          <listitem>
-            <para>Log extra information about support of the XINERAMA extension.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DEBUG_SM</term>
-          <listitem>
-            <para>Log extra information about session management.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DEBUG_BUTTON_GRABS</term>
-          <listitem>
-            <para>Log extra information about button grabs.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_SYNC</term>
-          <listitem>
-            <para>Call XSync after each X call.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DISPLAY</term>
-          <listitem>
-            <para>Name of the X11 display to use.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>META_DISABLE_MIPMAPS</term>
-          <listitem>
-            <para>Disable use of mipmaps for the textures that back window pixmaps.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_USE_STATIC_GRAVITY</term>
-          <listitem>
-            <para>Enable support for clients with static bit-gravity.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_WM_CLASS_FILTER</term>
-          <listitem>
-            <para>Comma-separated list of WM_CLASS names to which to restrict Mutter to.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term>MUTTER_DISABLE_FALLBACK_COLOR</term>
-          <listitem>
-            <para>Disable fallback for themed colors, for easier detection of typographical errors.</para>
-          </listitem>
-        </varlistentry>
-      </variablelist>
-
-    </section>
-
-  </partintro>
-</part>
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1 +1,2 @@
-data/mutter-wayland.desktop.in
+# List of source files that should NOT be translated.
+# Please keep this file sorted alphabetically.
--- a/po/cs.po
+++ b/po/cs.po
@@ -30,91 +30,91 @@ msgstr "Navigace"

 #: ../data/50-mutter-navigation.xml.in.h:2
 msgid "Move window to workspace 1"
-msgstr "Přesunout okno na plochu 1"
+msgstr "Přesunout okno na pracovní plochu 1"

 #: ../data/50-mutter-navigation.xml.in.h:3
 msgid "Move window to workspace 2"
-msgstr "Přesunout okno na plochu 2"
+msgstr "Přesunout okno na pracovní plochu 2"

 #: ../data/50-mutter-navigation.xml.in.h:4
 msgid "Move window to workspace 3"
-msgstr "Přesunout okno na plochu 3"
+msgstr "Přesunout okno na pracovní plochu 3"

 #: ../data/50-mutter-navigation.xml.in.h:5
 msgid "Move window to workspace 4"
-msgstr "Přesunout okno na plochu 4"
+msgstr "Přesunout okno na pracovní plochu 4"

 #: ../data/50-mutter-navigation.xml.in.h:6
 msgid "Move window to last workspace"
-msgstr "Přesunout okno na poslední plochu"
+msgstr "Přesunout okno na poslední pracovní plochu"

 #: ../data/50-mutter-navigation.xml.in.h:7
 msgid "Move window one workspace to the left"
-msgstr "Přesunout okno o plochu doleva"
+msgstr "Přesunout okno o jednu pracovní plochu doleva"

 #: ../data/50-mutter-navigation.xml.in.h:8
 msgid "Move window one workspace to the right"
-msgstr "Přesunout okno o plochu doprava"
+msgstr "Přesunout okno o jednu pracovní plochu doprava"

 #: ../data/50-mutter-navigation.xml.in.h:9
 msgid "Move window one workspace up"
-msgstr "Přesunout okno o plochu nahoru"
+msgstr "Přesunout okno o jednu pracovní plochu nahoru"

 #: ../data/50-mutter-navigation.xml.in.h:10
 msgid "Move window one workspace down"
-msgstr "Přesunout okno o plochu dolů"
+msgstr "Přesunout okno o jednu pracovní plochu dolů"

 #: ../data/50-mutter-navigation.xml.in.h:11
 msgid "Move window one monitor to the left"
-msgstr "Přesunout okno o monitor doleva"
+msgstr "Přesunout okno o jeden monitor doleva"

 #: ../data/50-mutter-navigation.xml.in.h:12
 msgid "Move window one monitor to the right"
-msgstr "Přesunout okno o monitor doprava"
+msgstr "Přesunout okno o jeden monitor doprava"

 #: ../data/50-mutter-navigation.xml.in.h:13
 msgid "Move window one monitor up"
-msgstr "Přesunout okno o monitor nahoru"
+msgstr "Přesunout okno o jeden monitor nahoru"

 #: ../data/50-mutter-navigation.xml.in.h:14
 msgid "Move window one monitor down"
-msgstr "Přesunout okno o monitor dolů"
+msgstr "Přesunout okno o jeden monitor dolů"

 #: ../data/50-mutter-navigation.xml.in.h:15
 msgid "Switch applications"
-msgstr "Přepnout mezi aplikacemi"
+msgstr "Přepnout do jiné aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:16
 msgid "Switch to previous application"
-msgstr "Přepnout na předchozí aplikaci"
+msgstr "Přepnout do předchozí aplikaci"

 #: ../data/50-mutter-navigation.xml.in.h:17
 msgid "Switch windows"
-msgstr "Přepnout mezi okny"
+msgstr "Přepnout do jiného okna"

 #: ../data/50-mutter-navigation.xml.in.h:18
 msgid "Switch to previous window"
-msgstr "Přepnout na předchozí okno"
+msgstr "Přepnout do minulého okna"

 #: ../data/50-mutter-navigation.xml.in.h:19
 msgid "Switch windows of an application"
-msgstr "Přepnout mezi okny aplikace"
+msgstr "Přepnout do jiného okna aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:20
 msgid "Switch to previous window of an application"
-msgstr "Přepnout na předchozí okno aplikace"
+msgstr "Přepnout do předchozího okna aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:21
 msgid "Switch system controls"
-msgstr "Přepnout mezi systémovými ovládacími prvky"
+msgstr "Přepnout na systémový ovládací prvek"

 #: ../data/50-mutter-navigation.xml.in.h:22
 msgid "Switch to previous system control"
-msgstr "Přepnout na předchozí systémové ovládací prvky"
+msgstr "Přepnout na minulý systémový ovládací prvek"

 #: ../data/50-mutter-navigation.xml.in.h:23
 msgid "Switch windows directly"
-msgstr "Přepnout přímo mezi okny"
+msgstr "Přepnout do minulého okna"

 #: ../data/50-mutter-navigation.xml.in.h:24
 msgid "Switch directly to previous window"
@@ -122,15 +122,15 @@ msgstr "Přepnout přímo na předchozí okno"

 #: ../data/50-mutter-navigation.xml.in.h:25
 msgid "Switch windows of an app directly"
-msgstr "Přepnout přímo mezi okny aplikace"
+msgstr "Přepnout do jiného okna aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:26
 msgid "Switch directly to previous window of an app"
-msgstr "Přepnout přímo na předchozí okno aplikace"
+msgstr "Přepnout do předchozího okna aplikace"

 #: ../data/50-mutter-navigation.xml.in.h:27
 msgid "Switch system controls directly"
-msgstr "Přepnout přímo mezi systémovými ovládacími prvky"
+msgstr "Přepnout na minulý systémový ovládací prvek"

 #: ../data/50-mutter-navigation.xml.in.h:28
 msgid "Switch directly to previous system control"
@@ -198,7 +198,7 @@ msgstr "Aktivovat nabídku okna"

 #: ../data/50-mutter-windows.xml.in.h:3
 msgid "Toggle fullscreen mode"
-msgstr "Přepnout režim na celou obrazovku"
+msgstr "Přepnout režim celé obrazovky"

 #: ../data/50-mutter-windows.xml.in.h:4
 msgid "Toggle maximization state"
@@ -210,7 +210,7 @@ msgstr "Maximalizovat okno"

 #: ../data/50-mutter-windows.xml.in.h:6
 msgid "Restore window"
-msgstr "Obnovit okno"
+msgstr "Obnovit velikost okna"

 #: ../data/50-mutter-windows.xml.in.h:7
 msgid "Toggle shaded state"
@@ -234,20 +234,20 @@ msgstr "Změnit velikost okna"

 #: ../data/50-mutter-windows.xml.in.h:12
 msgid "Toggle window on all workspaces or one"
-msgstr "Přepnout výskyt okna na všech plochách nebo jen na jedné"
+msgstr "Přepnout okno na všechny/jednu pracovní plochu"

 #: ../data/50-mutter-windows.xml.in.h:13
 msgid "Raise window if covered, otherwise lower it"
 msgstr ""
-"Přenést okno do popředí, pokud je zakryté, jinak jej odsunout do pozadí"
+"Když je okno zakryté vynést jej do popředí, jinak odsunout do pozadí"

 #: ../data/50-mutter-windows.xml.in.h:14
 msgid "Raise window above other windows"
-msgstr "Přenést okno do popředí nad ostatní okna"
+msgstr "Vynést okno do popředí nad ostatní okna"

 #: ../data/50-mutter-windows.xml.in.h:15
 msgid "Lower window below other windows"
-msgstr "Odsunout okno do pozadí pod ostatní okna"
+msgstr "Odsunout okno do pozadí za ostatní okna"

 #: ../data/50-mutter-windows.xml.in.h:16
 msgid "Maximize window vertically"
@@ -259,11 +259,11 @@ msgstr "Maximalizovat okno vodorovně"

 #: ../data/50-mutter-windows.xml.in.h:18
 msgid "View split on left"
-msgstr "Zobrazit rozdělení nalevo"
+msgstr "Rozdělit okno přes levou půlku obrazovky"

 #: ../data/50-mutter-windows.xml.in.h:19
 msgid "View split on right"
-msgstr "Zobrazit rozdělení napravo"
+msgstr "Rozdělit okno přes pravou půlku obrazovky"

 #: ../data/mutter.desktop.in.h:1
 msgid "Mutter"
--- a/po/de.po
+++ b/po/de.po
--- a/po/lt.po
+++ b/po/lt.po
@@ -13,8 +13,8 @@ msgstr ""
 "Project-Id-Version: lt\n"
 "Report-Msgid-Bugs-To: http://bugzilla.gnome.org/enter_bug.cgi?"
 "product=mutter&keywords=I18N+L10N&component=general\n"
-"POT-Creation-Date: 2015-02-28 11:14+0000\n"
-"PO-Revision-Date: 2015-02-28 21:34+0200\n"
+"POT-Creation-Date: 2016-01-05 13:43+0000\n"
+"PO-Revision-Date: 2016-01-05 18:04+0200\n"
 "Last-Translator: Aurimas Černius <aurisc4@gmail.com>\n"
 "Language-Team: Lietuvių <gnome-lt@lists.akl.lt>\n"
 "Language: lt\n"
@@ -23,7 +23,7 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && (n"
 "%100<10 || n%100>=20) ? 1 : 2);\n"
-"X-Generator: Gtranslator 2.91.6\n"
+"X-Generator: Poedit 1.8.6\n"

 #: ../data/50-mutter-navigation.xml.in.h:1
 msgid "Navigation"
@@ -31,39 +31,39 @@ msgstr "Navigacija"

 #: ../data/50-mutter-navigation.xml.in.h:2
 msgid "Move window to workspace 1"
-msgstr "Perkelti langą į darbalaukį Nr.1"
+msgstr "Perkelti langą į darbo sritį Nr.1"

 #: ../data/50-mutter-navigation.xml.in.h:3
 msgid "Move window to workspace 2"
-msgstr "Perkelti langą į darbalaukį Nr.2"
+msgstr "Perkelti langą į darbo sritį Nr.2"

 #: ../data/50-mutter-navigation.xml.in.h:4
 msgid "Move window to workspace 3"
-msgstr "Perkelti langą į darbalaukį Nr.3"
+msgstr "Perkelti langą į darbo sritį Nr.3"

 #: ../data/50-mutter-navigation.xml.in.h:5
 msgid "Move window to workspace 4"
-msgstr "Perkelti langą į darbalaukį Nr.4"
+msgstr "Perkelti langą į darbo sritį Nr.4"

 #: ../data/50-mutter-navigation.xml.in.h:6
 msgid "Move window to last workspace"
-msgstr "Perkelti langą į pastarąjį darbalaukį"
+msgstr "Perkelti langą į pastarąją darbo sritį"

 #: ../data/50-mutter-navigation.xml.in.h:7
 msgid "Move window one workspace to the left"
-msgstr "Perkelti langą į kairiau esantį darbalaukį"
+msgstr "Perkelti langą į kairiau esančią darbo sritį"

 #: ../data/50-mutter-navigation.xml.in.h:8
 msgid "Move window one workspace to the right"
-msgstr "Perkelti langą į dešiniau esantį darbalaukį"
+msgstr "Perkelti langą į dešiniau esančią darbo sritį"

 #: ../data/50-mutter-navigation.xml.in.h:9
 msgid "Move window one workspace up"
-msgstr "Perkelti langą į aukščiau esantį darbalaukį"
+msgstr "Perkelti langą į aukščiau esančią darbo sritį"

 #: ../data/50-mutter-navigation.xml.in.h:10
 msgid "Move window one workspace down"
-msgstr "Perkelti langą į žemiau esantį darbalaukį"
+msgstr "Perkelti langą į žemiau esančią darbo sritį"

 #: ../data/50-mutter-navigation.xml.in.h:11
 msgid "Move window one monitor to the left"
@@ -143,39 +143,39 @@ msgstr "Paslėpti visus įprastinius langus"

 #: ../data/50-mutter-navigation.xml.in.h:30
 msgid "Switch to workspace 1"
-msgstr "Persijungti į darbalaukį Nr.1"
+msgstr "Persijungti į darbo sritį Nr.1"

 #: ../data/50-mutter-navigation.xml.in.h:31
 msgid "Switch to workspace 2"
-msgstr "Persijungti į darbalaukį Nr.2"
+msgstr "Persijungti į darbo sritį Nr.2"

 #: ../data/50-mutter-navigation.xml.in.h:32
 msgid "Switch to workspace 3"
-msgstr "Persijungti į darbalaukį Nr.3"
+msgstr "Persijungti į darbo sritį Nr.3"

 #: ../data/50-mutter-navigation.xml.in.h:33
 msgid "Switch to workspace 4"
-msgstr "Persijungti į darbalaukį Nr.4"
+msgstr "Persijungti į darbo sritį Nr.4"

 #: ../data/50-mutter-navigation.xml.in.h:34
 msgid "Switch to last workspace"
-msgstr "Persijungti į pastarąjį darbalaukį"
+msgstr "Persijungti į pastarąją darbo sritį"

 #: ../data/50-mutter-navigation.xml.in.h:35
 msgid "Move to workspace left"
-msgstr "Perkelti į darbalaukį kairėje"
+msgstr "Perkelti į darbo sritį kairėje"

 #: ../data/50-mutter-navigation.xml.in.h:36
 msgid "Move to workspace right"
-msgstr "Perkelti į darbalaukį dešinėje"
+msgstr "Perkelti į darbo sritį dešinėje"

 #: ../data/50-mutter-navigation.xml.in.h:37
 msgid "Move to workspace above"
-msgstr "Perkelti į darbalaukį viršuje"
+msgstr "Perkelti į darbo sritį viršuje"

 #: ../data/50-mutter-navigation.xml.in.h:38
 msgid "Move to workspace below"
-msgstr "Perkelti į darbalaukį apačioje"
+msgstr "Perkelti į darbo sritį apačioje"

 #: ../data/50-mutter-system.xml.in.h:1
 msgid "System"
@@ -235,7 +235,7 @@ msgstr "Keisti lango dydį"

 #: ../data/50-mutter-windows.xml.in.h:12
 msgid "Toggle window on all workspaces or one"
-msgstr "Perjungti lango buvimo visuose darbalaukiuose būseną"
+msgstr "Perjungti lango buvimo visose darbo srityse būseną"

 #: ../data/50-mutter-windows.xml.in.h:13
 msgid "Raise window if covered, otherwise lower it"
@@ -272,7 +272,7 @@ msgstr "Mutter"

 #: ../data/org.gnome.mutter.gschema.xml.in.h:1
 msgid "Modifier to use for extended window management operations"
-msgstr "Klavišas, naudojamas kartu su specialiais lango valdymo veiksmais"
+msgstr "Klavišas, naudojamas kartu su specialiomis lango tvarkymo operacijomis"

 #: ../data/org.gnome.mutter.gschema.xml.in.h:2
 msgid ""
@@ -315,7 +315,7 @@ msgstr ""

 #: ../data/org.gnome.mutter.gschema.xml.in.h:7
 msgid "Workspaces are managed dynamically"
-msgstr "Darbalaukiai valdomi dinamiškai"
+msgstr "Darbo sritys tvarkomos dinamiškai"

 #: ../data/org.gnome.mutter.gschema.xml.in.h:8
 msgid ""
@@ -323,21 +323,21 @@ msgid ""
 "static number of workspaces (determined by the num-workspaces key in org."
 "gnome.desktop.wm.preferences)."
 msgstr ""
-"Nusako, ar darbastaliai yra valdomi dinamiškai, ar yra pastovus darbalaukių "
-"skaičius (nusakomas raktu num-workspaces schemoje org.gnome.desktop.wm."
-"preferences)."
+"Nusako, ar darbo sritys yra tvarkomos dinamiškai, ar yra pastovus darbo "
+"sričių skaičius (nusakomas raktu num-workspaces schemoje org.gnome.desktop."
+"wm.preferences)."

 #: ../data/org.gnome.mutter.gschema.xml.in.h:9
 msgid "Workspaces only on primary"
-msgstr "Darbalaukiai tik pagrindiniame"
+msgstr "Darbo sritys tik pagrindiniame"

 #: ../data/org.gnome.mutter.gschema.xml.in.h:10
 msgid ""
 "Determines whether workspace switching should happen for windows on all "
 "monitors or only for windows on the primary monitor."
 msgstr ""
-"Nusako, ar darbalaukių perjungimas turi įvykti langams viusose monitoriuose, "
-"ar tik langams pagrindiniame monitoriuje."
+"Nusako, ar darbo sričių perjungimas turi įvykti langams visuose "
+"monitoriuose, ar tik langams pagrindiniame monitoriuje."

 #: ../data/org.gnome.mutter.gschema.xml.in.h:11
 msgid "No tab popup"
@@ -438,46 +438,41 @@ msgid "Switch to VT 7"
 msgstr "Persijungti į VT 7"

 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:8
-#| msgid "Switch to VT 1"
 msgid "Switch to VT 8"
 msgstr "Persijungti į VT 8"

 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:9
-#| msgid "Switch to VT 1"
 msgid "Switch to VT 9"
 msgstr "Persijungti į VT 9"

 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:10
-#| msgid "Switch to VT 1"
 msgid "Switch to VT 10"
 msgstr "Persijungti į VT 10"

 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:11
-#| msgid "Switch to VT 1"
 msgid "Switch to VT 11"
 msgstr "Persijungti į VT 11"

 #: ../data/org.gnome.mutter.wayland.gschema.xml.in.h:12
-#| msgid "Switch to VT 1"
 msgid "Switch to VT 12"
 msgstr "Persijungti į VT 12"

-#: ../src/backends/meta-monitor-manager.c:364
+#: ../src/backends/meta-monitor-manager.c:518
 msgid "Built-in display"
 msgstr "Integruotas vaizduoklis"

-#: ../src/backends/meta-monitor-manager.c:391
+#: ../src/backends/meta-monitor-manager.c:544
 msgid "Unknown"
 msgstr "Nežinomas"

-#: ../src/backends/meta-monitor-manager.c:393
+#: ../src/backends/meta-monitor-manager.c:546
 msgid "Unknown Display"
 msgstr "Nežinomas vaizduoklis"

 #. TRANSLATORS: this is a monitor vendor name, followed by a
 #. * size in inches, like 'Dell 15"'
 #.
-#: ../src/backends/meta-monitor-manager.c:401
+#: ../src/backends/meta-monitor-manager.c:554
 #, c-format
 msgid "%s %s"
 msgstr "%s %s"
@@ -489,7 +484,7 @@ msgstr "%s %s"
 msgid ""
 "Another compositing manager is already running on screen %i on display \"%s"
 "\"."
-msgstr "Kita kompozicijos valdyklė jau veikia ekrane %i vaizduoklyje „%s“."
+msgstr "Kita kompozicijos tvarkytuvė jau veikia ekrane %i vaizduoklyje „%s“."

 #: ../src/core/bell.c:185
 msgid "Bell event"
@@ -518,40 +513,40 @@ msgstr "_Laukti"
 msgid "_Force Quit"
 msgstr "_Priverstinai išeiti"

-#: ../src/core/display.c:562
+#: ../src/core/display.c:563
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
 msgstr "Nepavyko atverti X Window sistemos ekrano „%s“\n"

-#: ../src/core/main.c:176
+#: ../src/core/main.c:180
 msgid "Disable connection to session manager"
-msgstr "Išjungti susijungimą su sesijos valdykle"
+msgstr "Išjungti susijungimą su sesijos tvarkytuve"

-#: ../src/core/main.c:182
+#: ../src/core/main.c:186
 msgid "Replace the running window manager"
-msgstr "Pakeisti veikiančią langų valdyklę"
+msgstr "Pakeisti veikiančią langų tvarkytuvę"

-#: ../src/core/main.c:188
+#: ../src/core/main.c:192
 msgid "Specify session management ID"
-msgstr "Nurodyti sesijos valdymo ID"
+msgstr "Nurodyti sesijos tvarkymo ID"

-#: ../src/core/main.c:193
+#: ../src/core/main.c:197
 msgid "X Display to use"
 msgstr "Naudotinas X ekranas"

-#: ../src/core/main.c:199
+#: ../src/core/main.c:203
 msgid "Initialize session from savefile"
 msgstr "Inicializuoti sesiją iš išsaugojimo failo"

-#: ../src/core/main.c:205
+#: ../src/core/main.c:209
 msgid "Make X calls synchronous"
 msgstr "Sinchronizuoti X iškvietimus"

-#: ../src/core/main.c:212
+#: ../src/core/main.c:216
 msgid "Run as a wayland compositor"
 msgstr "Vykdyti kaip wayland kompozitorių"

-#: ../src/core/main.c:220
+#: ../src/core/main.c:224
 msgid "Run as a full display server, rather than nested"
 msgstr "Vykdyti kaip visą vaizduoklio serverį, o ne vidinį"

@@ -580,24 +575,21 @@ msgstr "Parodyti versiją"
 msgid "Mutter plugin to use"
 msgstr "Naudojamas Mutter įskiepis"

-#: ../src/core/prefs.c:2004
+#: ../src/core/prefs.c:1997
 #, c-format
 msgid "Workspace %d"
-msgstr "Darbalaukis %d"
+msgstr "Darbo sritis %d"

-#: ../src/core/screen.c:525
+#: ../src/core/screen.c:526
 #, c-format
-#| msgid ""
-#| "Screen %d on display \"%s\" already has a window manager; try using the --"
-#| "replace option to replace the current window manager.\n"
 msgid ""
 "Display \"%s\" already has a window manager; try using the --replace option "
 "to replace the current window manager."
 msgstr ""
-"Vaizduoklis „%s“ jau turi langų valdyklę; pabandykite pakeisti esamą langų "
-"valdyklę naudodami parametrą --replace."
+"Vaizduoklis „%s“ jau turi langų tvarkytuvę; pabandykite pakeisti esamą langų "
+"tvarkytuvę, naudodami parametrą --replace."

-#: ../src/core/screen.c:607
+#: ../src/core/screen.c:608
 #, c-format
 msgid "Screen %d on display '%s' is invalid\n"
 msgstr "Ekranas %d vaizduoklyje „%s“ netinkamas\n"
--- a/po/lv.po
+++ b/po/lv.po
--- a/po/pl.po
+++ b/po/pl.po
@@ -15,8 +15,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: mutter\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2015-03-05 00:23+0100\n"
-"PO-Revision-Date: 2015-03-05 00:24+0100\n"
+"POT-Creation-Date: 2015-08-26 18:49+0200\n"
+"PO-Revision-Date: 2015-08-26 18:50+0200\n"
 "Last-Translator: Piotr Drąg <piotrdrag@gmail.com>\n"
 "Language-Team: Polish <gnomepl@aviary.pl>\n"
 "Language: pl\n"
@@ -285,9 +285,9 @@ msgid ""
 "\"Windows key\" on PC hardware. It's expected that this binding either the "
 "default or set to the empty string."
 msgstr ""
-"Ten klawisz inicjuje tryb \"overlay\", który jest połączeniem podglądu okien "
-"i systemu uruchamiania programów. Domyślnie jest przeznaczony do powiązania "
-"z klawiszem \"Windows\" na komputerach typu PC. Ustawienie tego powiązania "
+"Ten klawisz inicjuje tryb „overlay”, który jest połączeniem podglądu okien i "
+"systemu uruchamiania programów. Domyślnie jest przeznaczony do powiązania z "
+"klawiszem „Windows” na komputerach typu PC. Ustawienie tego powiązania "
 "powinno być domyślne lub puste."

 #: ../data/org.gnome.mutter.gschema.xml.in.h:3
@@ -300,9 +300,9 @@ msgid ""
 "attached to the titlebar of the parent window and are moved together with "
 "the parent window."
 msgstr ""
-"Jeśli wynosi \"true\", to modalne okna dialogowe pojawiają się dołączone do "
-"paska tytułowego okna nadrzędnego zamiast posiadać oddzielne paski tytułowe "
-"i są przenoszone razem z nim."
+"Jeśli wynosi wartość „true”, to modalne okna dialogowe pojawiają się "
+"dołączone do paska tytułowego okna nadrzędnego zamiast posiadać oddzielne "
+"paski tytułowe i są przenoszone razem z nim."

 #: ../data/org.gnome.mutter.gschema.xml.in.h:5
 msgid "Enable edge tiling when dropping windows on screen edges"
@@ -332,7 +332,7 @@ msgid ""
 "gnome.desktop.wm.preferences)."
 msgstr ""
 "Określa, czy obszary robocze są zarządzane dynamicznie, czy istnieje "
-"statyczna liczba obszarów (określona przez klucz \"num-workspaces\" w org."
+"statyczna liczba obszarów (określona przez klucz „num-workspaces” w org."
 "gnome.desktop.wm.preferences)."

 #: ../data/org.gnome.mutter.gschema.xml.in.h:9
@@ -369,9 +369,9 @@ msgid ""
 "the focus will not be changed immediately when entering a window, but only "
 "after the pointer stops moving."
 msgstr ""
-"Jeśli jest ustawione na wartość \"true\", a tryb aktywności to \"sloppy\" "
-"lub \"mouse\", to aktywność nie będzie zmieniana od razu po przejściu do "
-"okna, ale dopiero po zatrzymaniu ruchu kursora."
+"Jeśli jest ustawione na wartość „true”, a tryb aktywności to „sloppy” lub "
+"„mouse”, to aktywność nie będzie zmieniana od razu po przejściu do okna, ale "
+"dopiero po zatrzymaniu ruchu kursora."

 #: ../data/org.gnome.mutter.gschema.xml.in.h:15
 msgid "Draggable border width"
@@ -409,7 +409,7 @@ msgid ""
 "When true, the new windows will always be put in the center of the active "
 "screen of the monitor."
 msgstr ""
-"Jeśli wynosi \"true\", to nowe okna będą zawsze umieszczane na środku "
+"Jeśli wynosi wartość „true”, to nowe okna będą zawsze umieszczane na środku "
 "aktywnego ekranu monitora."

 #: ../data/org.gnome.mutter.gschema.xml.in.h:21
@@ -468,22 +468,22 @@ msgstr "Przełączenie na 11. konsolę wirtualną"
 msgid "Switch to VT 12"
 msgstr "Przełączenie na 12. konsolę wirtualną"

-#: ../src/backends/meta-monitor-manager.c:364
+#: ../src/backends/meta-monitor-manager.c:500
 msgid "Built-in display"
 msgstr "Wbudowany ekran"

-#: ../src/backends/meta-monitor-manager.c:391
+#: ../src/backends/meta-monitor-manager.c:526
 msgid "Unknown"
 msgstr "Nieznany"

-#: ../src/backends/meta-monitor-manager.c:393
+#: ../src/backends/meta-monitor-manager.c:528
 msgid "Unknown Display"
 msgstr "Nieznany ekran"

 #. TRANSLATORS: this is a monitor vendor name, followed by a
 #. * size in inches, like 'Dell 15"'
 #.
-#: ../src/backends/meta-monitor-manager.c:401
+#: ../src/backends/meta-monitor-manager.c:536
 #, c-format
 msgid "%s %s"
 msgstr "%s %s"
@@ -496,7 +496,7 @@ msgid ""
 "Another compositing manager is already running on screen %i on display \"%s"
 "\"."
 msgstr ""
-"Inny menedżer składania jest już uruchomiony na podekranie %i ekranu \"%s\"."
+"Inny menedżer składania jest już uruchomiony na podekranie %i ekranu „%s”."

 #: ../src/core/bell.c:185
 msgid "Bell event"
@@ -505,7 +505,7 @@ msgstr "Zdarzenie sygnału dźwiękowego"
 #: ../src/core/delete.c:127
 #, c-format
 msgid "“%s” is not responding."
-msgstr "Okno \"%s\" nie odpowiada."
+msgstr "Okno „%s” nie odpowiada."

 #: ../src/core/delete.c:129
 msgid "Application is not responding."
@@ -525,11 +525,10 @@ msgstr "_Czekaj"
 msgid "_Force Quit"
 msgstr "_Zakończ"

-#: ../src/core/display.c:562
+#: ../src/core/display.c:563
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
-msgstr ""
-"Otwarcie połączenia z ekranem \"%s\" systemu X Window się nie powiodło\n"
+msgstr "Otwarcie połączenia z ekranem „%s” systemu X Window się nie powiodło\n"

 #: ../src/core/main.c:176
 msgid "Disable connection to session manager"
@@ -573,7 +572,7 @@ msgid ""
 "PARTICULAR PURPOSE.\n"
 msgstr ""
 "mutter %s\n"
-"Copyright (C) 2001-%d Havoc Pennington, Red Hat, Inc., oraz inni\n"
+"Copyright (C) 2001—%d Havoc Pennington, Red Hat, Inc., oraz inni\n"
 "Niniejszy program jest wolnym oprogramowaniem, aby poznać warunki, pod\n"
 "jakimi dopuszczalne jest kopiowanie programu, zajrzyj do jego źródeł.\n"
 "Na program nie udziela się ŻADNYCH GWARANCJI, nawet domyślnej gwarancji\n"
@@ -598,13 +597,13 @@ msgid ""
 "Display \"%s\" already has a window manager; try using the --replace option "
 "to replace the current window manager."
 msgstr ""
-"Na ekranie \"%s\" działa już menedżer okien. Aby zastąpić działającego "
+"Na ekranie „%s” działa już menedżer okien. Aby zastąpić działającego "
 "menedżera okien, proszę spróbować użyć opcji --replace."

 #: ../src/core/screen.c:607
 #, c-format
 msgid "Screen %d on display '%s' is invalid\n"
-msgstr "Podekran %d ekranu \"%s\" jest nieprawidłowy\n"
+msgstr "Podekran %d ekranu „%s” jest nieprawidłowy\n"

 #: ../src/core/util.c:118
 msgid "Mutter was compiled without support for verbose mode\n"
@@ -616,7 +615,7 @@ msgid ""
 "These windows do not support &quot;save current setup&quot; and will have to "
 "be restarted manually next time you log in."
 msgstr ""
-"Te okna nie obsługują opcji zapisu obecnego stanu (\"save current setup\"), "
+"Te okna nie obsługują opcji zapisu obecnego stanu („save current setup”), "
 "więc przy następnym zalogowaniu będą musiały zostać uruchomione ręcznie."

 #: ../src/x11/window-props.c:549
--- a/po/pt.po
+++ b/po/pt.po
--- a/po/ro.po
+++ b/po/ro.po
--- a/po/th.po
+++ b/po/th.po
--- a/po/zh_TW.po
+++ b/po/zh_TW.po
@@ -10,7 +10,7 @@ msgstr ""
 "Project-Id-Version: metacity 3.3.4\n"
 "Report-Msgid-Bugs-To: http://bugzilla.gnome.org/enter_bug.cgi?"
 "product=mutter&keywords=I18N+L10N&component=general\n"
-"POT-Creation-Date: 2015-02-20 23:22+0000\n"
+"POT-Creation-Date: 2015-07-21 10:52+0000\n"
 "PO-Revision-Date: 2015-02-21 16:33+0800\n"
 "Last-Translator: Chao-Hsiung Liao <j_h_liau@yahoo.com.tw>\n"
 "Language-Team: Chinese (Taiwan) <zh-l10n@lists.linux.org.tw>\n"
@@ -439,22 +439,22 @@ msgstr "切換至 VT 11"
 msgid "Switch to VT 12"
 msgstr "切換至 VT 12"

-#: ../src/backends/meta-monitor-manager.c:364
+#: ../src/backends/meta-monitor-manager.c:500
 msgid "Built-in display"
 msgstr "內建顯示"

-#: ../src/backends/meta-monitor-manager.c:391
+#: ../src/backends/meta-monitor-manager.c:526
 msgid "Unknown"
 msgstr "不明"

-#: ../src/backends/meta-monitor-manager.c:393
+#: ../src/backends/meta-monitor-manager.c:528
 msgid "Unknown Display"
 msgstr "不明的顯示器"

 #. TRANSLATORS: this is a monitor vendor name, followed by a
 #. * size in inches, like 'Dell 15"'
 #.
-#: ../src/backends/meta-monitor-manager.c:401
+#: ../src/backends/meta-monitor-manager.c:536
 #, c-format
 msgid "%s %s"
 msgstr "%s %s"
@@ -462,7 +462,7 @@ msgstr "%s %s"
 # FIXME: I'm still unclear about the meaning of XGetSelectionOwner -- Abel
 #. This probably means that a non-WM compositor like xcompmgr is running;
 #. * we have no way to get it to exit
-#: ../src/compositor/compositor.c:456
+#: ../src/compositor/compositor.c:451
 #, c-format
 msgid ""
 "Another compositing manager is already running on screen %i on display \"%s"
@@ -496,14 +496,14 @@ msgstr "等待(_W)"
 msgid "_Force Quit"
 msgstr "強制結束(_F)"

-#: ../src/core/display.c:562
+#: ../src/core/display.c:563
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
 msgstr "無法開啟 X Window 畫面‘%s’\n"

 #: ../src/core/main.c:176
 msgid "Disable connection to session manager"
-msgstr "停用到作業階段管理程式的連線"
+msgstr "停用到作業階段管理員的連線"

 #: ../src/core/main.c:182
 msgid "Replace the running window manager"
@@ -1053,9 +1053,9 @@ msgstr "%s（在 %s）"
 #~ msgid ""
 #~ "\"%s\" found in configuration database is not a valid value for mouse "
 #~ "button modifier\n"
-#~ msgstr "組態資料庫中的“%s”設定值不是有效的滑鼠按鈕修改功能鍵\n"
+#~ msgstr "設定資料庫中的“%s”設定值不是有效的滑鼠按鈕修改功能鍵\n"

 #~ msgid ""
 #~ "\"%s\" found in configuration database is not a valid value for "
 #~ "keybinding \"%s\"\n"
-#~ msgstr "組態資料庫中的“%s”不是按鍵組合“%s”的有效設定值\n"
+#~ msgstr "設定資料庫中的“%s”不是按鍵組合“%s”的有效設定值\n"
--- a/src/Makefile-tests.am
+++ b/src/Makefile-tests.am
@@ -9,6 +9,7 @@ dist_stacking_DATA =				\
 	tests/stacking/basic-wayland.metatest	\
 	tests/stacking/minimized.metatest   	\
 	tests/stacking/mixed-windows.metatest   \
+	tests/stacking/set-parent.metatest	\
 	tests/stacking/override-redirect.metatest

 mutter-all.test: tests/mutter-all.test.in
@@ -41,9 +42,6 @@ endif
 # Some random test programs for bits of the code

 testboxes_SOURCES = core/testboxes.c
-testasyncgetprop_SOURCES = x11/testasyncgetprop.c
-
-noinst_PROGRAMS+=testboxes testasyncgetprop
-
 testboxes_LDADD = $(MUTTER_LIBS) libmutter.la
-testasyncgetprop_LDADD = $(MUTTER_LIBS) libmutter.la
+
+noinst_PROGRAMS += testboxes
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -39,22 +39,27 @@ mutter_built_sources = \
 	$(dbus_idle_built_sources)		\
 	$(dbus_display_config_built_sources)	\
 	$(dbus_login1_built_sources)		\
-	mutter-enum-types.h 			\
-	mutter-enum-types.c			\
+	meta/meta-enum-types.h			\
+	meta-enum-types.c			\
 	$(NULL)

 if HAVE_WAYLAND
 mutter_built_sources += \
+	pointer-gestures-unstable-v1-protocol.c				\
+	pointer-gestures-unstable-v1-server-protocol.h			\
 	gtk-shell-protocol.c			\
 	gtk-shell-server-protocol.h		\
-	xdg-shell-protocol.c			\
-	xdg-shell-server-protocol.h		\
+	xdg-shell-unstable-v5-protocol.c				\
+	xdg-shell-unstable-v5-server-protocol.h				\
+	relative-pointer-unstable-v1-protocol.c				\
+	relative-pointer-unstable-v1-server-protocol.h			\
+	pointer-constraints-unstable-v1-protocol.c			\
+	pointer-constraints-unstable-v1-server-protocol.h		\
 	$(NULL)
 endif

 wayland_protocols =				\
 	wayland/protocol/gtk-shell.xml		\
-	wayland/protocol/xdg-shell.xml		\
 	$(NULL)

 libmutter_la_SOURCES =				\
@@ -65,7 +70,6 @@ libmutter_la_SOURCES =				\
 	backends/meta-barrier-private.h		\
 	backends/meta-cursor.c			\
 	backends/meta-cursor.h			\
-	backends/meta-cursor-private.h		\
 	backends/meta-cursor-tracker.c		\
 	backends/meta-cursor-tracker-private.h	\
 	backends/meta-cursor-renderer.c		\
@@ -84,6 +88,8 @@ libmutter_la_SOURCES =				\
 	backends/meta-monitor-manager-private.h	\
 	backends/meta-monitor-manager-dummy.c	\
 	backends/meta-monitor-manager-dummy.h	\
+	backends/meta-pointer-constraint.c	\
+	backends/meta-pointer-constraint.h	\
 	backends/meta-stage.h			\
 	backends/meta-stage.c			\
 	backends/edid-parse.c			\
@@ -94,6 +100,8 @@ libmutter_la_SOURCES =				\
 	backends/x11/meta-barrier-x11.h			\
 	backends/x11/meta-cursor-renderer-x11.c		\
 	backends/x11/meta-cursor-renderer-x11.h		\
+	backends/x11/nested/meta-cursor-renderer-x11-nested.c		\
+	backends/x11/nested/meta-cursor-renderer-x11-nested.h		\
 	backends/x11/meta-idle-monitor-xsync.c		\
 	backends/x11/meta-idle-monitor-xsync.h		\
 	backends/x11/meta-input-settings-x11.c		\
@@ -108,6 +116,8 @@ libmutter_la_SOURCES =				\
 	core/boxes.c				\
 	core/boxes-private.h			\
 	meta/boxes.h				\
+	core/meta-border.c			\
+	core/meta-border.h			\
 	compositor/clutter-utils.c		\
 	compositor/clutter-utils.h		\
 	compositor/cogl-utils.c			\
@@ -132,13 +142,14 @@ libmutter_la_SOURCES =				\
 	compositor/meta-plugin-manager.c	\
 	compositor/meta-plugin-manager.h	\
 	compositor/meta-shadow-factory.c	\
-	compositor/meta-shadow-factory-private.h	\
 	compositor/meta-shaped-texture.c	\
 	compositor/meta-shaped-texture-private.h 	\
 	compositor/meta-surface-actor.c		\
 	compositor/meta-surface-actor.h		\
 	compositor/meta-surface-actor-x11.c	\
 	compositor/meta-surface-actor-x11.h	\
+	compositor/meta-sync-ring.c		\
+	compositor/meta-sync-ring.h		\
 	compositor/meta-texture-rectangle.c	\
 	compositor/meta-texture-rectangle.h	\
 	compositor/meta-texture-tower.c		\
@@ -148,7 +159,6 @@ libmutter_la_SOURCES =				\
 	compositor/meta-window-group.c		\
 	compositor/meta-window-group.h		\
 	compositor/meta-window-shape.c		\
-	compositor/meta-window-shape.h		\
 	compositor/region-utils.c		\
 	compositor/region-utils.h		\
 	meta/compositor.h			\
@@ -159,6 +169,7 @@ libmutter_la_SOURCES =				\
 	meta/meta-plugin.h			\
 	meta/meta-shadow-factory.h		\
 	meta/meta-window-actor.h		\
+	meta/meta-window-shape.h		\
 	meta/compositor-mutter.h 		\
 	core/constraints.c			\
 	core/constraints.h			\
@@ -187,6 +198,8 @@ libmutter_la_SOURCES =				\
 	core/screen.c				\
 	core/screen-private.h			\
 	meta/screen.h				\
+	core/startup-notification.c		\
+	core/startup-notification-private.h	\
 	meta/types.h				\
 	core/restart.c				\
 	core/stack.c				\
@@ -210,10 +223,7 @@ libmutter_la_SOURCES =				\
 	meta/theme.h				\
 	ui/theme-private.h			\
 	ui/ui.c					\
-	x11/iconcache.c				\
-	x11/iconcache.h				\
-	x11/async-getprop.c			\
-	x11/async-getprop.h			\
+	x11/atomnames.h				\
 	x11/events.c				\
 	x11/events.h				\
 	x11/group-private.h			\
@@ -221,6 +231,8 @@ libmutter_la_SOURCES =				\
 	x11/group-props.h			\
 	x11/group.c				\
 	meta/group.h				\
+	x11/iconcache.c				\
+	x11/iconcache.h				\
 	x11/session.c				\
 	x11/session.h				\
 	x11/window-props.c			\
@@ -242,6 +254,8 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-private.h		\
 	wayland/meta-xwayland.c			\
 	wayland/meta-xwayland.h			\
+	wayland/meta-xwayland-selection.c	\
+	wayland/meta-xwayland-selection-private.h	\
 	wayland/meta-xwayland-private.h		\
 	wayland/meta-wayland-buffer.c      	\
 	wayland/meta-wayland-buffer.h      	\
@@ -249,10 +263,23 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-region.h      	\
 	wayland/meta-wayland-data-device.c      \
 	wayland/meta-wayland-data-device.h      \
+	wayland/meta-wayland-data-device-private.h	\
+	wayland/meta-wayland-pointer-gestures.c	\
+	wayland/meta-wayland-pointer-gestures.h	\
+	wayland/meta-wayland-pointer-gesture-swipe.c	\
+	wayland/meta-wayland-pointer-gesture-swipe.h	\
+	wayland/meta-wayland-pointer-gesture-pinch.c	\
+	wayland/meta-wayland-pointer-gesture-pinch.h	\
 	wayland/meta-wayland-keyboard.c		\
 	wayland/meta-wayland-keyboard.h		\
 	wayland/meta-wayland-pointer.c		\
 	wayland/meta-wayland-pointer.h		\
+	wayland/meta-wayland-pointer-constraints.c	\
+	wayland/meta-wayland-pointer-constraints.h	\
+	wayland/meta-pointer-lock-wayland.c		\
+	wayland/meta-pointer-lock-wayland.h		\
+	wayland/meta-pointer-confinement-wayland.c	\
+	wayland/meta-pointer-confinement-wayland.h	\
 	wayland/meta-wayland-popup.c		\
 	wayland/meta-wayland-popup.h		\
 	wayland/meta-wayland-seat.c		\
@@ -265,8 +292,8 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-versions.h		\
 	wayland/meta-wayland-outputs.c		\
 	wayland/meta-wayland-outputs.h		\
-	wayland/window-wayland.c		\
-	wayland/window-wayland.h		\
+	wayland/meta-window-wayland.c		\
+	wayland/meta-window-wayland.h		\
 	$(NULL)
 endif

@@ -322,6 +349,7 @@ libmutterinclude_headers =			\
 	meta/meta-shaped-texture.h		\
 	meta/meta-shadow-factory.h		\
 	meta/meta-window-actor.h		\
+	meta/meta-window-shape.h		\
 	meta/prefs.h				\
 	meta/screen.h				\
 	meta/theme.h				\
@@ -332,22 +360,18 @@ libmutterinclude_headers =			\
 	$(NULL)

 libmutterinclude_built_headers =		\
-	meta/meta-version.h
+	meta/meta-version.h			\
+	meta/meta-enum-types.h			\
+	$(NULL)

 libmutterinclude_base_headers =			\
 	$(libmutterinclude_headers)		\
 	$(libmutterinclude_built_headers)

-# Excluded from scanning for introspection but installed
-# atomnames.h: macros cause problems for scanning process
-libmutterinclude_extra_headers =		\
-	meta/atomnames.h
-
 libmutterincludedir = $(includedir)/mutter/meta

 libmutterinclude_HEADERS =			\
-	$(libmutterinclude_headers)		\
-	$(libmutterinclude_extra_headers)
+	$(libmutterinclude_headers)

 nodist_libmutterinclude_HEADERS =		\
 	$(libmutterinclude_built_headers)
@@ -390,7 +414,6 @@ Meta-$(api_version).gir: libmutter.la
@META_GIR@_CFLAGS = $(AM_CPPFLAGS)
@META_GIR@_LIBS = libmutter.la
@META_GIR@_FILES =				\
-	mutter-enum-types.h			\
 	$(libmutterinclude_base_headers)	\
 	$(filter %.c,$(libmutter_la_SOURCES) $(nodist_libmutter_la_SOURCES))
@META_GIR@_SCANNERFLAGS = --warn-all --warn-error
@@ -413,8 +436,8 @@ pkgconfig_DATA = libmutter.pc
 EXTRA_DIST +=					\
 	$(wayland_protocols)			\
 	libmutter.pc.in				\
-	mutter-enum-types.h.in			\
-	mutter-enum-types.c.in			\
+	meta-enum-types.h.in			\
+	meta-enum-types.c.in			\
 	org.freedesktop.login1.xml		\
 	org.gnome.Mutter.DisplayConfig.xml	\
 	org.gnome.Mutter.IdleMonitor.xml	\
@@ -424,26 +447,26 @@ BUILT_SOURCES =					\
 	$(mutter_built_sources)			\
 	$(libmutterinclude_built_headers)

-MUTTER_STAMP_FILES = stamp-mutter-enum-types.h
+MUTTER_STAMP_FILES = stamp-meta-enum-types.h
 CLEANFILES += $(MUTTER_STAMP_FILES)

-mutter-enum-types.h: stamp-mutter-enum-types.h Makefile
+meta/meta-enum-types.h: stamp-meta-enum-types.h Makefile
 	@true
-stamp-mutter-enum-types.h: $(libmutterinclude_base_headers) mutter-enum-types.h.in
+stamp-meta-enum-types.h: $(libmutterinclude_headers) meta-enum-types.h.in
 	$(AM_V_GEN) ( cd $(srcdir) && \
 	  $(GLIB_MKENUMS) \
-	    --template mutter-enum-types.h.in \
+	    --template meta-enum-types.h.in \
 	  $(libmutterinclude_base_headers) ) >> xgen-teth && \
-	(cmp -s xgen-teth mutter-enum-types.h || cp xgen-teth mutter-enum-types.h) && \
+	(cmp -s xgen-teth meta/meta-enum-types.h || cp xgen-teth meta/meta-enum-types.h) && \
 	rm -f xgen-teth && \
 	echo timestamp > $(@F)

-mutter-enum-types.c: stamp-mutter-enum-types.h mutter-enum-types.c.in
+meta-enum-types.c: stamp-meta-enum-types.h meta-enum-types.c.in
 	  $(AM_V_GEN) ( cd $(srcdir) && \
 	  $(GLIB_MKENUMS) \
-	    --template mutter-enum-types.c.in \
+	    --template meta-enum-types.c.in \
 	  $(libmutterinclude_base_headers) ) >> xgen-tetc && \
-	cp xgen-tetc mutter-enum-types.c && \
+	cp xgen-tetc meta-enum-types.c && \
 	rm -f xgen-tetc

 dbus_display_config_built_sources = meta-dbus-display-config.c meta-dbus-display-config.h
@@ -472,6 +495,20 @@ $(dbus_login1_built_sources) : Makefile.am org.freedesktop.login1.xml
 		--generate-c-code meta-dbus-login1					\
 		$(srcdir)/org.freedesktop.login1.xml

+.SECONDEXPANSION:
+
+define protostability
+$(shell echo $1 | sed 's/.*\(\<unstable\>\|\<stable\>\).*/\1/')
+endef
+
+define protoname
+$(shell echo $1 | sed 's/\([a-z\-]\+\)-[a-z]\+-v[0-9]\+/\1/')
+endef
+
+%-protocol.c : $(WAYLAND_PROTOCOLS_DATADIR)/$$(call protostability,$$*)/$$(call protoname,$$*)/$$*.xml
+	$(AM_V_GEN)$(WAYLAND_SCANNER) code < $< > $@
+%-server-protocol.h : $(WAYLAND_PROTOCOLS_DATADIR)/$$(call protostability,$$*)/$$(call protoname,$$*)/$$*.xml
+	$(AM_V_GEN)$(WAYLAND_SCANNER) server-header < $< > $@
 %-protocol.c : $(srcdir)/wayland/protocol/%.xml
 	$(AM_V_GEN)$(WAYLAND_SCANNER) code < $< > $@
 %-server-protocol.h : $(srcdir)/wayland/protocol/%.xml
--- a/src/backends/meta-backend-private.h
+++ b/src/backends/meta-backend-private.h
@@ -34,6 +34,7 @@
 #include <meta/meta-idle-monitor.h>
 #include "meta-cursor-renderer.h"
 #include "meta-monitor-manager-private.h"
+#include "backends/meta-pointer-constraint.h"

 #define DEFAULT_XKB_RULES_FILE "evdev"
 #define DEFAULT_XKB_MODEL "pc105+inet"
@@ -51,6 +52,8 @@ struct _MetaBackend

  GHashTable *device_monitors;
  gint current_device_id;
+
+  MetaPointerConstraint *client_pointer_constraint;
 };

 struct _MetaBackendClass
@@ -87,6 +90,13 @@ struct _MetaBackendClass

  void (* update_screen_size) (MetaBackend *backend, int width, int height);
  void (* select_stage_events) (MetaBackend *backend);
+
+  gboolean (* get_relative_motion_deltas) (MetaBackend *backend,
+                                           const        ClutterEvent *event,
+                                           double       *dx,
+                                           double       *dy,
+                                           double       *dx_unaccel,
+                                           double       *dy_unaccel);
 };

 MetaIdleMonitor * meta_backend_get_idle_monitor (MetaBackend *backend,
@@ -110,4 +120,14 @@ struct xkb_keymap * meta_backend_get_keymap (MetaBackend *backend);
 void meta_backend_update_last_device (MetaBackend *backend,
                                      int          device_id);

+gboolean meta_backend_get_relative_motion_deltas (MetaBackend *backend,
+                                                  const        ClutterEvent *event,
+                                                  double       *dx,
+                                                  double       *dy,
+                                                  double       *dx_unaccel,
+                                                  double       *dy_unaccel);
+
+void meta_backend_set_client_pointer_constraint (MetaBackend *backend,
+                                                 MetaPointerConstraint *constraint);
+
 #endif /* META_BACKEND_PRIVATE_H */
--- a/src/backends/meta-backend.c
+++ b/src/backends/meta-backend.c
@@ -24,6 +24,8 @@

 #include "config.h"

+#include <stdlib.h>
+
 #include <meta/meta-backend.h>
 #include "meta-backend-private.h"
 #include "meta-input-settings-private.h"
@@ -351,6 +353,17 @@ meta_backend_real_select_stage_events (MetaBackend *backend)
  /* Do nothing */
 }

+static gboolean
+meta_backend_real_get_relative_motion_deltas (MetaBackend *backend,
+                                             const         ClutterEvent *event,
+                                             double        *dx,
+                                             double        *dy,
+                                             double        *dx_unaccel,
+                                             double        *dy_unaccel)
+{
+  return FALSE;
+}
+
 static void
 meta_backend_class_init (MetaBackendClass *klass)
 {
@@ -364,6 +377,7 @@ meta_backend_class_init (MetaBackendClass *klass)
  klass->ungrab_device = meta_backend_real_ungrab_device;
  klass->update_screen_size = meta_backend_real_update_screen_size;
  klass->select_stage_events = meta_backend_real_select_stage_events;
+  klass->get_relative_motion_deltas = meta_backend_real_get_relative_motion_deltas;

  g_signal_new ("keymap-changed",
                G_TYPE_FROM_CLASS (object_class),
@@ -542,6 +556,32 @@ meta_backend_update_last_device (MetaBackend *backend,
    }
 }

+gboolean
+meta_backend_get_relative_motion_deltas (MetaBackend *backend,
+                                         const        ClutterEvent *event,
+                                         double       *dx,
+                                         double       *dy,
+                                         double       *dx_unaccel,
+                                         double       *dy_unaccel)
+{
+  MetaBackendClass *klass = META_BACKEND_GET_CLASS (backend);
+  return klass->get_relative_motion_deltas (backend,
+                                            event,
+                                            dx, dy,
+                                            dx_unaccel, dy_unaccel);
+}
+
+void
+meta_backend_set_client_pointer_constraint (MetaBackend           *backend,
+                                            MetaPointerConstraint *constraint)
+{
+  g_assert (!constraint || (constraint && !backend->client_pointer_constraint));
+
+  g_clear_object (&backend->client_pointer_constraint);
+  if (constraint)
+    backend->client_pointer_constraint = g_object_ref (constraint);
+}
+
 static GType
 get_backend_type (void)
 {
@@ -626,7 +666,10 @@ meta_clutter_init (void)
  meta_create_backend ();

  if (clutter_init (NULL, NULL) != CLUTTER_INIT_SUCCESS)
-    g_error ("Unable to initialize Clutter.\n");
+    {
+      g_warning ("Unable to initialize Clutter.\n");
+      exit (1);
+    }

  /*
   * XXX: We cannot handle high dpi scaling yet, so fix the scale to 1
--- a/src/backends/meta-barrier-private.h
+++ b/src/backends/meta-barrier-private.h
@@ -26,6 +26,8 @@
 #ifndef META_BARRIER_PRIVATE_H
 #define META_BARRIER_PRIVATE_H

+#include "core/meta-border.h"
+
 G_BEGIN_DECLS

 #define META_TYPE_BARRIER_IMPL            (meta_barrier_impl_get_type ())
@@ -67,14 +69,7 @@ G_END_DECLS
 struct _MetaBarrierPrivate
 {
  MetaDisplay *display;
-
-  int x1;
-  int y1;
-  int x2;
-  int y2;
-
-  MetaBarrierDirection directions;
-
+  MetaBorder border;
  MetaBarrierImpl *impl;
 };

--- a/src/backends/meta-barrier.c
+++ b/src/backends/meta-barrier.c
@@ -16,7 +16,7 @@
 #include "backends/native/meta-barrier-native.h"
 #include "backends/x11/meta-backend-x11.h"
 #include "backends/x11/meta-barrier-x11.h"
-#include "mutter-enum-types.h"
+#include <meta/meta-enum-types.h>

 G_DEFINE_TYPE (MetaBarrier, meta_barrier, G_TYPE_OBJECT)
 G_DEFINE_TYPE (MetaBarrierImpl, meta_barrier_impl, G_TYPE_OBJECT)
@@ -61,19 +61,20 @@ meta_barrier_get_property (GObject    *object,
      g_value_set_object (value, priv->display);
      break;
    case PROP_X1:
-      g_value_set_int (value, priv->x1);
+      g_value_set_int (value, priv->border.line.a.x);
      break;
    case PROP_Y1:
-      g_value_set_int (value, priv->y1);
+      g_value_set_int (value, priv->border.line.a.y);
      break;
    case PROP_X2:
-      g_value_set_int (value, priv->x2);
+      g_value_set_int (value, priv->border.line.b.x);
      break;
    case PROP_Y2:
-      g_value_set_int (value, priv->y2);
+      g_value_set_int (value, priv->border.line.b.y);
      break;
    case PROP_DIRECTIONS:
-      g_value_set_flags (value, priv->directions);
+      g_value_set_flags (value,
+                         meta_border_get_allows_directions (&priv->border));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -95,19 +96,20 @@ meta_barrier_set_property (GObject      *object,
      priv->display = g_value_get_object (value);
      break;
    case PROP_X1:
-      priv->x1 = g_value_get_int (value);
+      priv->border.line.a.x = g_value_get_int (value);
      break;
    case PROP_Y1:
-      priv->y1 = g_value_get_int (value);
+      priv->border.line.a.y = g_value_get_int (value);
      break;
    case PROP_X2:
-      priv->x2 = g_value_get_int (value);
+      priv->border.line.b.x = g_value_get_int (value);
      break;
    case PROP_Y2:
-      priv->y2 = g_value_get_int (value);
+      priv->border.line.b.y = g_value_get_int (value);
      break;
    case PROP_DIRECTIONS:
-      priv->directions = g_value_get_flags (value);
+      meta_border_set_allows_directions (&priv->border,
+                                         g_value_get_flags (value));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -166,7 +168,8 @@ meta_barrier_constructed (GObject *object)
  MetaBarrier *barrier = META_BARRIER (object);
  MetaBarrierPrivate *priv = barrier->priv;

-  g_return_if_fail (priv->x1 == priv->x2 || priv->y1 == priv->y2);
+  g_return_if_fail (priv->border.line.a.x == priv->border.line.b.x ||
+                    priv->border.line.a.y == priv->border.line.b.y);

 #if defined(HAVE_NATIVE_BACKEND)
  if (META_IS_BACKEND_NATIVE (meta_get_backend ()))
--- a/src/backends/meta-cursor-private.h
+++ b/src/backends/meta-cursor-private.h
@@ -1,59 +0,0 @@
-/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
-
-/*
- * Copyright 2013 Red Hat, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- *
- * Author: Giovanni Campagna <gcampagn@redhat.com>
- */
-
-#ifndef META_CURSOR_PRIVATE_H
-#define META_CURSOR_PRIVATE_H
-
-#include "meta-cursor.h"
-
-#include <cogl/cogl.h>
-
-#ifdef HAVE_NATIVE_BACKEND
-#include <gbm.h>
-#endif
-
-typedef struct {
-  CoglTexture2D *texture;
-  int hot_x, hot_y;
-
-#ifdef HAVE_NATIVE_BACKEND
-  struct gbm_bo *bo;
-#endif
-} MetaCursorImage;
-
-struct _MetaCursorReference {
-  int ref_count;
-
-  MetaCursor cursor;
-  MetaCursorImage image;
-};
-
-CoglTexture *meta_cursor_reference_get_cogl_texture (MetaCursorReference *cursor,
-                                                     int                 *hot_x,
-                                                     int                 *hot_y);
-
-#ifdef HAVE_NATIVE_BACKEND
-struct gbm_bo *meta_cursor_reference_get_gbm_bo (MetaCursorReference *cursor,
-                                                 int                 *hot_x,
-                                                 int                 *hot_y);
-#endif
-
-#endif /* META_CURSOR_PRIVATE_H */
--- a/src/backends/meta-cursor-renderer.c
+++ b/src/backends/meta-cursor-renderer.c
@@ -25,9 +25,10 @@
 #include "config.h"

 #include "meta-cursor-renderer.h"
-#include "meta-cursor-private.h"

 #include <meta/meta-backend.h>
+#include <backends/meta-backend-private.h>
+#include <backends/meta-monitor-manager-private.h>
 #include <meta/util.h>

 #include <cogl/cogl.h>
@@ -38,9 +39,8 @@
 struct _MetaCursorRendererPrivate
 {
  int current_x, current_y;
-  MetaRectangle current_rect;

-  MetaCursorReference *displayed_cursor;
+  MetaCursorSprite *displayed_cursor;
  gboolean handled_by_backend;
 };
 typedef struct _MetaCursorRendererPrivate MetaCursorRendererPrivate;
@@ -48,27 +48,33 @@ typedef struct _MetaCursorRendererPrivate MetaCursorRendererPrivate;
 G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRenderer, meta_cursor_renderer, G_TYPE_OBJECT);

 static void
-queue_redraw (MetaCursorRenderer *renderer)
+queue_redraw (MetaCursorRenderer *renderer,
+              MetaCursorSprite   *cursor_sprite)
 {
  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
  MetaBackend *backend = meta_get_backend ();
  ClutterActor *stage = meta_backend_get_stage (backend);
  CoglTexture *texture;
+  MetaRectangle rect = { 0 };
+
+  if (cursor_sprite)
+    rect = meta_cursor_renderer_calculate_rect (renderer, cursor_sprite);

  /* During early initialization, we can have no stage */
  if (!stage)
    return;

-  if (priv->displayed_cursor && !priv->handled_by_backend)
-    texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, NULL, NULL);
+  if (cursor_sprite && !priv->handled_by_backend)
+    texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
  else
    texture = NULL;

-  meta_stage_set_cursor (META_STAGE (stage), texture, &priv->current_rect);
+  meta_stage_set_cursor (META_STAGE (stage), texture, &rect);
 }

 static gboolean
-meta_cursor_renderer_real_update_cursor (MetaCursorRenderer *renderer)
+meta_cursor_renderer_real_update_cursor (MetaCursorRenderer *renderer,
+                                         MetaCursorSprite   *cursor_sprite)
 {
  return FALSE;
 }
@@ -84,34 +90,63 @@ meta_cursor_renderer_init (MetaCursorRenderer *renderer)
 {
 }

+MetaRectangle
+meta_cursor_renderer_calculate_rect (MetaCursorRenderer *renderer,
+                                     MetaCursorSprite   *cursor_sprite)
+{
+  MetaCursorRendererPrivate *priv =
+    meta_cursor_renderer_get_instance_private (renderer);
+  CoglTexture *texture;
+  int hot_x, hot_y;
+  int width, height;
+  float texture_scale;
+
+  texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
+  if (!texture)
+    return (MetaRectangle) { 0 };
+
+  meta_cursor_sprite_get_hotspot (cursor_sprite, &hot_x, &hot_y);
+  texture_scale = meta_cursor_sprite_get_texture_scale (cursor_sprite);
+  width = cogl_texture_get_width (texture);
+  height = cogl_texture_get_height (texture);
+
+  return (MetaRectangle) {
+    .x = (int)roundf (priv->current_x - (hot_x * texture_scale)),
+    .y = (int)roundf (priv->current_y - (hot_y * texture_scale)),
+    .width = (int)roundf (width * texture_scale),
+    .height = (int)roundf (height * texture_scale),
+  };
+}
+
+static gboolean
+is_cursor_in_monitors_area (int x, int y)
+{
+  MetaMonitorManager *monitor_manager = meta_backend_get_monitor_manager (meta_get_backend ());
+  return meta_monitor_manager_get_monitor_at_point (monitor_manager,
+                                                    (gfloat) x, (gfloat) y) >= 0;
+}
+
 static void
-update_cursor (MetaCursorRenderer *renderer)
+update_cursor (MetaCursorRenderer *renderer,
+               MetaCursorSprite   *cursor_sprite)
 {
  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
  gboolean handled_by_backend;
  gboolean should_redraw = FALSE;

-  if (priv->displayed_cursor)
-    {
-      CoglTexture *texture;
-      int hot_x, hot_y;
+  /* do not render cursor if it is not on any monitor. Such situation
+   * can occur e. g. after monitor hot-plug */
+  if (!is_cursor_in_monitors_area (priv->current_x, priv->current_y))
+    return;

-      texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, &hot_x, &hot_y);
+  if (cursor_sprite)
+    meta_cursor_sprite_prepare_at (cursor_sprite,
+                                   priv->current_x,
+                                   priv->current_y);

-      priv->current_rect.x = priv->current_x - hot_x;
-      priv->current_rect.y = priv->current_y - hot_y;
-      priv->current_rect.width = cogl_texture_get_width (COGL_TEXTURE (texture));
-      priv->current_rect.height = cogl_texture_get_height (COGL_TEXTURE (texture));
-    }
-  else
-    {
-      priv->current_rect.x = 0;
-      priv->current_rect.y = 0;
-      priv->current_rect.width = 0;
-      priv->current_rect.height = 0;
-    }
-
-  handled_by_backend = META_CURSOR_RENDERER_GET_CLASS (renderer)->update_cursor (renderer);
+  handled_by_backend =
+    META_CURSOR_RENDERER_GET_CLASS (renderer)->update_cursor (renderer,
+                                                              cursor_sprite);
  if (handled_by_backend != priv->handled_by_backend)
    {
      priv->handled_by_backend = handled_by_backend;
@@ -122,7 +157,7 @@ update_cursor (MetaCursorRenderer *renderer)
    should_redraw = TRUE;

  if (should_redraw)
-    queue_redraw (renderer);
+    queue_redraw (renderer, cursor_sprite);
 }

 MetaCursorRenderer *
@@ -132,16 +167,25 @@ meta_cursor_renderer_new (void)
 }

 void
-meta_cursor_renderer_set_cursor (MetaCursorRenderer  *renderer,
-                                 MetaCursorReference *cursor)
+meta_cursor_renderer_set_cursor (MetaCursorRenderer *renderer,
+                                 MetaCursorSprite   *cursor_sprite)
 {
  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);

-  if (priv->displayed_cursor == cursor)
+  if (priv->displayed_cursor == cursor_sprite)
    return;
+  priv->displayed_cursor = cursor_sprite;

-  priv->displayed_cursor = cursor;
-  update_cursor (renderer);
+  update_cursor (renderer, cursor_sprite);
+}
+
+void
+meta_cursor_renderer_force_update (MetaCursorRenderer *renderer)
+{
+  MetaCursorRendererPrivate *priv =
+    meta_cursor_renderer_get_instance_private (renderer);
+
+  update_cursor (renderer, priv->displayed_cursor);
 }

 void
@@ -155,10 +199,10 @@ meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
  priv->current_x = x;
  priv->current_y = y;

-  update_cursor (renderer);
+  update_cursor (renderer, priv->displayed_cursor);
 }

-MetaCursorReference *
+MetaCursorSprite *
 meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer)
 {
  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
@@ -166,10 +210,27 @@ meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer)
  return priv->displayed_cursor;
 }

-const MetaRectangle *
-meta_cursor_renderer_get_rect (MetaCursorRenderer *renderer)
+#ifdef HAVE_WAYLAND
+void
+meta_cursor_renderer_realize_cursor_from_wl_buffer (MetaCursorRenderer *renderer,
+                                                    MetaCursorSprite   *cursor_sprite,
+                                                    struct wl_resource *buffer)
 {
-  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);

-  return &priv->current_rect;
+  MetaCursorRendererClass *renderer_class = META_CURSOR_RENDERER_GET_CLASS (renderer);
+
+  if (renderer_class->realize_cursor_from_wl_buffer)
+    renderer_class->realize_cursor_from_wl_buffer (renderer, cursor_sprite, buffer);
+}
+#endif
+
+void
+meta_cursor_renderer_realize_cursor_from_xcursor (MetaCursorRenderer *renderer,
+                                                  MetaCursorSprite   *cursor_sprite,
+                                                  XcursorImage       *xc_image)
+{
+  MetaCursorRendererClass *renderer_class = META_CURSOR_RENDERER_GET_CLASS (renderer);
+
+  if (renderer_class->realize_cursor_from_xcursor)
+    renderer_class->realize_cursor_from_xcursor (renderer, cursor_sprite, xc_image);
 }
--- a/src/backends/meta-cursor-renderer.h
+++ b/src/backends/meta-cursor-renderer.h
@@ -26,43 +26,56 @@
 #define META_CURSOR_RENDERER_H

 #include <glib-object.h>
+#include <X11/Xcursor/Xcursor.h>
+#ifdef HAVE_WAYLAND
+#include <wayland-server.h>
+#endif

 #include <meta/screen.h>
 #include "meta-cursor.h"

-#define META_TYPE_CURSOR_RENDERER            (meta_cursor_renderer_get_type ())
-#define META_CURSOR_RENDERER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_CURSOR_RENDERER, MetaCursorRenderer))
-#define META_CURSOR_RENDERER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_CURSOR_RENDERER, MetaCursorRendererClass))
-#define META_IS_CURSOR_RENDERER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_CURSOR_RENDERER))
-#define META_IS_CURSOR_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_CURSOR_RENDERER))
-#define META_CURSOR_RENDERER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_CURSOR_RENDERER, MetaCursorRendererClass))
-
-typedef struct _MetaCursorRenderer        MetaCursorRenderer;
-typedef struct _MetaCursorRendererClass   MetaCursorRendererClass;
-
-struct _MetaCursorRenderer
-{
-  GObject parent;
-};
+#define META_TYPE_CURSOR_RENDERER (meta_cursor_renderer_get_type ())
+G_DECLARE_DERIVABLE_TYPE (MetaCursorRenderer, meta_cursor_renderer,
+                          META, CURSOR_RENDERER, GObject);

 struct _MetaCursorRendererClass
 {
  GObjectClass parent_class;

-  gboolean (* update_cursor) (MetaCursorRenderer *renderer);
+  gboolean (* update_cursor) (MetaCursorRenderer *renderer,
+                              MetaCursorSprite   *cursor_sprite);
+#ifdef HAVE_WAYLAND
+  void (* realize_cursor_from_wl_buffer) (MetaCursorRenderer *renderer,
+                                          MetaCursorSprite *cursor_sprite,
+                                          struct wl_resource *buffer);
+#endif
+  void (* realize_cursor_from_xcursor) (MetaCursorRenderer *renderer,
+                                        MetaCursorSprite *cursor_sprite,
+                                        XcursorImage *xc_image);
 };

-GType meta_cursor_renderer_get_type (void) G_GNUC_CONST;
-
 MetaCursorRenderer * meta_cursor_renderer_new (void);

-void meta_cursor_renderer_set_cursor (MetaCursorRenderer  *renderer,
-                                      MetaCursorReference *cursor);
+void meta_cursor_renderer_set_cursor (MetaCursorRenderer *renderer,
+                                      MetaCursorSprite   *cursor_sprite);

 void meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
                                        int x, int y);
+void meta_cursor_renderer_force_update (MetaCursorRenderer *renderer);

-MetaCursorReference * meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer);
-const MetaRectangle * meta_cursor_renderer_get_rect (MetaCursorRenderer *renderer);
+MetaCursorSprite * meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer);
+
+MetaRectangle meta_cursor_renderer_calculate_rect (MetaCursorRenderer *renderer,
+                                                   MetaCursorSprite   *cursor_sprite);
+
+#ifdef HAVE_WAYLAND
+void meta_cursor_renderer_realize_cursor_from_wl_buffer (MetaCursorRenderer *renderer,
+                                                         MetaCursorSprite   *cursor_sprite,
+                                                         struct wl_resource *buffer);
+#endif
+
+void meta_cursor_renderer_realize_cursor_from_xcursor (MetaCursorRenderer *renderer,
+                                                       MetaCursorSprite   *cursor_sprite,
+                                                       XcursorImage       *xc_image);

 #endif /* META_CURSOR_RENDERER_H */
--- a/src/backends/meta-cursor-tracker-private.h
+++ b/src/backends/meta-cursor-tracker-private.h
@@ -34,7 +34,7 @@ struct _MetaCursorTracker {

  gboolean is_showing;

-  MetaCursorReference *displayed_cursor;
+  MetaCursorSprite *displayed_cursor;

  /* Wayland clients can set a NULL buffer as their cursor
   * explicitly, which means that we shouldn't display anything.
@@ -42,12 +42,12 @@ struct _MetaCursorTracker {
   * determine an unset window cursor; we need an extra boolean.
   */
  gboolean has_window_cursor;
-  MetaCursorReference *window_cursor;
+  MetaCursorSprite *window_cursor;

-  MetaCursorReference *root_cursor;
+  MetaCursorSprite *root_cursor;

  /* The cursor from the X11 server. */
-  MetaCursorReference *xfixes_cursor;
+  MetaCursorSprite *xfixes_cursor;
 };

 struct _MetaCursorTrackerClass {
@@ -57,16 +57,16 @@ struct _MetaCursorTrackerClass {
 gboolean meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
 					    XEvent            *xevent);

-void     meta_cursor_tracker_set_window_cursor   (MetaCursorTracker   *tracker,
-                                                  MetaCursorReference *cursor);
-void     meta_cursor_tracker_unset_window_cursor (MetaCursorTracker   *tracker);
-void     meta_cursor_tracker_set_root_cursor     (MetaCursorTracker   *tracker,
-                                                  MetaCursorReference *cursor);
+void     meta_cursor_tracker_set_window_cursor   (MetaCursorTracker *tracker,
+                                                  MetaCursorSprite  *cursor_sprite);
+void     meta_cursor_tracker_unset_window_cursor (MetaCursorTracker *tracker);
+void     meta_cursor_tracker_set_root_cursor     (MetaCursorTracker *tracker,
+                                                  MetaCursorSprite  *cursor_sprite);

 void     meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
 					      int                new_x,
 					      int                new_y);

-MetaCursorReference * meta_cursor_tracker_get_displayed_cursor (MetaCursorTracker *tracker);
+MetaCursorSprite * meta_cursor_tracker_get_displayed_cursor (MetaCursorTracker *tracker);

 #endif
--- a/src/backends/meta-cursor-tracker.c
+++ b/src/backends/meta-cursor-tracker.c
@@ -43,7 +43,6 @@
 #include <X11/extensions/Xfixes.h>

 #include "meta-backend-private.h"
-#include "meta-cursor-private.h"

 G_DEFINE_TYPE (MetaCursorTracker, meta_cursor_tracker, G_TYPE_OBJECT);

@@ -54,7 +53,7 @@ enum {

 static guint signals[LAST_SIGNAL];

-static MetaCursorReference *
+static MetaCursorSprite *
 get_displayed_cursor (MetaCursorTracker *tracker)
 {
  MetaDisplay *display = meta_get_display ();
@@ -80,14 +79,14 @@ update_displayed_cursor (MetaCursorTracker *tracker)
 static void
 sync_cursor (MetaCursorTracker *tracker)
 {
-  MetaCursorReference *displayed_cursor = get_displayed_cursor (tracker);
+  MetaCursorSprite *displayed_cursor = get_displayed_cursor (tracker);

  if (tracker->displayed_cursor == displayed_cursor)
    return;

-  g_clear_pointer (&tracker->displayed_cursor, meta_cursor_reference_unref);
+  g_clear_object (&tracker->displayed_cursor);
  if (displayed_cursor)
-    tracker->displayed_cursor = meta_cursor_reference_ref (displayed_cursor);
+    tracker->displayed_cursor = g_object_ref (displayed_cursor);

  update_displayed_cursor (tracker);
  g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
@@ -108,9 +107,9 @@ meta_cursor_tracker_finalize (GObject *object)
  MetaCursorTracker *self = META_CURSOR_TRACKER (object);

  if (self->displayed_cursor)
-    meta_cursor_reference_unref (self->displayed_cursor);
+    g_object_unref (self->displayed_cursor);
  if (self->root_cursor)
-    meta_cursor_reference_unref (self->root_cursor);
+    g_object_unref (self->root_cursor);

  G_OBJECT_CLASS (meta_cursor_tracker_parent_class)->finalize (object);
 }
@@ -156,13 +155,13 @@ meta_cursor_tracker_get_for_screen (MetaScreen *screen)
 }

 static void
-set_window_cursor (MetaCursorTracker   *tracker,
-                   gboolean             has_cursor,
-                   MetaCursorReference *cursor)
+set_window_cursor (MetaCursorTracker *tracker,
+                   gboolean           has_cursor,
+                   MetaCursorSprite  *cursor_sprite)
 {
-  g_clear_pointer (&tracker->window_cursor, meta_cursor_reference_unref);
-  if (cursor)
-    tracker->window_cursor = meta_cursor_reference_ref (cursor);
+  g_clear_object (&tracker->window_cursor);
+  if (cursor_sprite)
+    tracker->window_cursor = g_object_ref (cursor_sprite);
  tracker->has_window_cursor = has_cursor;
  sync_cursor (tracker);
 }
@@ -184,28 +183,12 @@ meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
  if (notify_event->subtype != XFixesDisplayCursorNotify)
    return FALSE;

-  g_clear_pointer (&tracker->xfixes_cursor, meta_cursor_reference_unref);
+  g_clear_object (&tracker->xfixes_cursor);
  g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);

  return TRUE;
 }

-static MetaCursorReference *
-meta_cursor_reference_take_texture (CoglTexture2D *texture,
-                                    int            hot_x,
-                                    int            hot_y)
-{
-  MetaCursorReference *self;
-
-  self = g_slice_new0 (MetaCursorReference);
-  self->ref_count = 1;
-  self->image.texture = texture;
-  self->image.hot_x = hot_x;
-  self->image.hot_y = hot_y;
-
-  return self;
-}
-
 static void
 ensure_xfixes_cursor (MetaCursorTracker *tracker)
 {
@@ -263,10 +246,13 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)

  if (sprite != NULL)
    {
-      MetaCursorReference *cursor = meta_cursor_reference_take_texture (sprite,
-                                                                        cursor_image->xhot,
-                                                                        cursor_image->yhot);
-      tracker->xfixes_cursor = cursor;
+      MetaCursorSprite *cursor_sprite = meta_cursor_sprite_new ();
+      meta_cursor_sprite_set_texture (cursor_sprite,
+                                      sprite,
+                                      cursor_image->xhot,
+                                      cursor_image->yhot);
+      cogl_object_unref (sprite);
+      tracker->xfixes_cursor = cursor_sprite;
    }
  XFree (cursor_image);
 }
@@ -279,22 +265,22 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)
 CoglTexture *
 meta_cursor_tracker_get_sprite (MetaCursorTracker *tracker)
 {
-  MetaCursorReference *cursor;
+  MetaCursorSprite *cursor_sprite;

  g_return_val_if_fail (META_IS_CURSOR_TRACKER (tracker), NULL);

  if (meta_is_wayland_compositor ())
    {
-      cursor = tracker->displayed_cursor;
+      cursor_sprite = tracker->displayed_cursor;
    }
  else
    {
      ensure_xfixes_cursor (tracker);
-      cursor = tracker->xfixes_cursor;
+      cursor_sprite = tracker->xfixes_cursor;
    }

-  if (cursor)
-    return meta_cursor_reference_get_cogl_texture (cursor, NULL, NULL);
+  if (cursor_sprite)
+    return meta_cursor_sprite_get_cogl_texture (cursor_sprite);
  else
    return NULL;
 }
@@ -311,22 +297,22 @@ meta_cursor_tracker_get_hot (MetaCursorTracker *tracker,
                             int               *x,
                             int               *y)
 {
-  MetaCursorReference *cursor;
+  MetaCursorSprite *cursor_sprite;

  g_return_if_fail (META_IS_CURSOR_TRACKER (tracker));

  if (meta_is_wayland_compositor ())
    {
-      cursor = tracker->displayed_cursor;
+      cursor_sprite = tracker->displayed_cursor;
    }
  else
    {
      ensure_xfixes_cursor (tracker);
-      cursor = tracker->xfixes_cursor;
+      cursor_sprite = tracker->xfixes_cursor;
    }

-  if (cursor)
-    meta_cursor_reference_get_cogl_texture (cursor, x, y);
+  if (cursor_sprite)
+    meta_cursor_sprite_get_hotspot (cursor_sprite, x, y);
  else
    {
      if (x)
@@ -337,10 +323,10 @@ meta_cursor_tracker_get_hot (MetaCursorTracker *tracker,
 }

 void
-meta_cursor_tracker_set_window_cursor (MetaCursorTracker   *tracker,
-                                       MetaCursorReference *cursor)
+meta_cursor_tracker_set_window_cursor (MetaCursorTracker *tracker,
+                                       MetaCursorSprite  *cursor_sprite)
 {
-  set_window_cursor (tracker, TRUE, cursor);
+  set_window_cursor (tracker, TRUE, cursor_sprite);
 }

 void
@@ -350,12 +336,12 @@ meta_cursor_tracker_unset_window_cursor (MetaCursorTracker *tracker)
 }

 void
-meta_cursor_tracker_set_root_cursor (MetaCursorTracker   *tracker,
-                                     MetaCursorReference *cursor)
+meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
+                                     MetaCursorSprite  *cursor_sprite)
 {
-  g_clear_pointer (&tracker->root_cursor, meta_cursor_reference_unref);
-  if (cursor)
-    tracker->root_cursor = meta_cursor_reference_ref (cursor);
+  g_clear_object (&tracker->root_cursor);
+  if (cursor_sprite)
+    tracker->root_cursor = g_object_ref (cursor_sprite);

  sync_cursor (tracker);
 }
@@ -375,12 +361,12 @@ get_pointer_position_gdk (int         *x,
                          int         *y,
                          int         *mods)
 {
-  GdkDeviceManager *gmanager;
+  GdkSeat *gseat;
  GdkDevice *gdevice;
  GdkScreen *gscreen;

-  gmanager = gdk_display_get_device_manager (gdk_display_get_default ());
-  gdevice = gdk_x11_device_manager_lookup (gmanager, META_VIRTUAL_CORE_POINTER_ID);
+  gseat = gdk_display_get_default_seat (gdk_display_get_default ());
+  gdevice = gdk_seat_get_pointer (gseat);

  gdk_device_get_position (gdevice, &gscreen, x, y);
  if (mods)
@@ -438,7 +424,7 @@ meta_cursor_tracker_set_pointer_visible (MetaCursorTracker *tracker,
  sync_cursor (tracker);
 }

-MetaCursorReference *
+MetaCursorSprite *
 meta_cursor_tracker_get_displayed_cursor (MetaCursorTracker *tracker)
 {
  return tracker->displayed_cursor;
--- a/src/backends/meta-cursor.c
+++ b/src/backends/meta-cursor.c
@@ -21,7 +21,7 @@

 #include "config.h"

-#include "meta-cursor-private.h"
+#include "meta-cursor.h"

 #include <meta/errors.h>

@@ -29,56 +29,38 @@
 #include "screen-private.h"
 #include "meta-backend-private.h"

-#ifdef HAVE_NATIVE_BACKEND
-#include "backends/native/meta-cursor-renderer-native.h"
-#endif
-
 #include <string.h>

 #include <X11/cursorfont.h>
 #include <X11/extensions/Xfixes.h>
 #include <X11/Xcursor/Xcursor.h>

-#ifdef HAVE_WAYLAND
-#include <cogl/cogl-wayland-server.h>
-#endif
+enum {
+  PREPARE_AT,

-MetaCursorReference *
-meta_cursor_reference_ref (MetaCursorReference *self)
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+struct _MetaCursorSprite
 {
-  g_assert (self->ref_count > 0);
-  self->ref_count++;
+  GObject parent;

-  return self;
-}
+  MetaCursor cursor;

-static void
-meta_cursor_image_free (MetaCursorImage *image)
-{
-  if (image->texture)
-    cogl_object_unref (image->texture);
+  CoglTexture2D *texture;
+  float texture_scale;
+  int hot_x, hot_y;

-#ifdef HAVE_NATIVE_BACKEND
-  if (image->bo)
-    gbm_bo_destroy (image->bo);
-#endif
-}
+  int current_frame;
+  XcursorImages *xcursor_images;

-static void
-meta_cursor_reference_free (MetaCursorReference *self)
-{
-  meta_cursor_image_free (&self->image);
-  g_slice_free (MetaCursorReference, self);
-}
+  int theme_scale;
+  gboolean theme_dirty;
+};

-void
-meta_cursor_reference_unref (MetaCursorReference *self)
-{
-  self->ref_count--;
-
-  if (self->ref_count == 0)
-    meta_cursor_reference_free (self);
-}
+G_DEFINE_TYPE (MetaCursorSprite, meta_cursor_sprite, G_TYPE_OBJECT)

 static const char *
 translate_meta_cursor (MetaCursor cursor)
@@ -135,93 +117,27 @@ meta_cursor_create_x_cursor (Display    *xdisplay,
  return XcursorLibraryLoadCursor (xdisplay, translate_meta_cursor (cursor));
 }

-static XcursorImage *
-load_cursor_on_client (MetaCursor cursor)
+static XcursorImages *
+load_cursor_on_client (MetaCursor cursor, int scale)
 {
-  return XcursorLibraryLoadImage (translate_meta_cursor (cursor),
-                                  meta_prefs_get_cursor_theme (),
-                                  meta_prefs_get_cursor_size ());
+  return XcursorLibraryLoadImages (translate_meta_cursor (cursor),
+                                   meta_prefs_get_cursor_theme (),
+                                   meta_prefs_get_cursor_size () * scale);
 }

-#ifdef HAVE_NATIVE_BACKEND
 static void
-get_hardware_cursor_size (uint64_t *cursor_width, uint64_t *cursor_height)
+meta_cursor_sprite_load_from_xcursor_image (MetaCursorSprite *self,
+                                            XcursorImage     *xc_image)
 {
  MetaBackend *meta_backend = meta_get_backend ();
  MetaCursorRenderer *renderer = meta_backend_get_cursor_renderer (meta_backend);
-
-  if (META_IS_CURSOR_RENDERER_NATIVE (renderer))
-    {
-      meta_cursor_renderer_native_get_cursor_size (META_CURSOR_RENDERER_NATIVE (renderer), cursor_width, cursor_height);
-      return;
-    }
-
-  g_assert_not_reached ();
-}
-#endif
-
-#ifdef HAVE_NATIVE_BACKEND
-static void
-meta_cursor_image_load_gbm_buffer (struct gbm_device *gbm,
-                                   MetaCursorImage   *image,
-                                   uint8_t           *pixels,
-                                   uint               width,
-                                   uint               height,
-                                   int                rowstride,
-                                   uint32_t           gbm_format)
-{
-  uint64_t cursor_width, cursor_height;
-  get_hardware_cursor_size (&cursor_width, &cursor_height);
-
-  if (width > cursor_width || height > cursor_height)
-    {
-      meta_warning ("Invalid theme cursor size (must be at most %ux%u)\n",
-                    (unsigned int)cursor_width, (unsigned int)cursor_height);
-      return;
-    }
-
-  if (gbm_device_is_format_supported (gbm, gbm_format,
-                                      GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE))
-    {
-      uint8_t buf[4 * cursor_width * cursor_height];
-      uint i;
-
-      image->bo = gbm_bo_create (gbm, cursor_width, cursor_height,
-                                 gbm_format, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
-
-      memset (buf, 0, sizeof(buf));
-      for (i = 0; i < height; i++)
-        memcpy (buf + i * 4 * cursor_width, pixels + i * rowstride, width * 4);
-
-      gbm_bo_write (image->bo, buf, cursor_width * cursor_height * 4);
-    }
-  else
-    meta_warning ("HW cursor for format %d not supported\n", gbm_format);
-}
-#endif
-
-#ifdef HAVE_NATIVE_BACKEND
-static struct gbm_device *
-get_gbm_device (void)
-{
-  MetaBackend *meta_backend = meta_get_backend ();
-  MetaCursorRenderer *renderer = meta_backend_get_cursor_renderer (meta_backend);
-
-  if (META_IS_CURSOR_RENDERER_NATIVE (renderer))
-    return meta_cursor_renderer_native_get_gbm_device (META_CURSOR_RENDERER_NATIVE (renderer));
-  else
-    return NULL;
-}
-#endif
-
-static void
-meta_cursor_image_load_from_xcursor_image (MetaCursorImage   *image,
-                                           XcursorImage      *xc_image)
-{
  uint width, height, rowstride;
  CoglPixelFormat cogl_format;
  ClutterBackend *clutter_backend;
  CoglContext *cogl_context;
+  CoglTexture *texture;
+
+  g_assert (self->texture == NULL);

  width           = xc_image->width;
  height          = xc_image->height;
@@ -233,196 +149,210 @@ meta_cursor_image_load_from_xcursor_image (MetaCursorImage   *image,
  cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
 #endif

-  image->hot_x = xc_image->xhot;
-  image->hot_y = xc_image->yhot;
-
  clutter_backend = clutter_get_default_backend ();
  cogl_context = clutter_backend_get_cogl_context (clutter_backend);
-  image->texture = cogl_texture_2d_new_from_data (cogl_context,
-                                                  width, height,
-                                                  cogl_format,
-                                                  rowstride,
-                                                  (uint8_t *) xc_image->pixels,
-                                                  NULL);
+  texture = cogl_texture_2d_new_from_data (cogl_context,
+                                           width, height,
+                                           cogl_format,
+                                           rowstride,
+                                           (uint8_t *) xc_image->pixels,
+                                           NULL);
+  meta_cursor_sprite_set_texture (self, texture,
+                                  xc_image->xhot, xc_image->yhot);
+  cogl_object_unref (texture);

-#ifdef HAVE_NATIVE_BACKEND
-  struct gbm_device *gbm = get_gbm_device ();
-  if (gbm)
-    meta_cursor_image_load_gbm_buffer (gbm,
-                                       image,
-                                       (uint8_t *) xc_image->pixels,
-                                       width, height, rowstride,
-                                       GBM_FORMAT_ARGB8888);
-#endif
+  meta_cursor_renderer_realize_cursor_from_xcursor (renderer, self, xc_image);
 }

-static void
-load_cursor_image (MetaCursorReference *cursor)
+static XcursorImage *
+meta_cursor_sprite_get_current_frame_image (MetaCursorSprite *self)
+{
+  return self->xcursor_images->images[self->current_frame];
+}
+
+void
+meta_cursor_sprite_tick_frame (MetaCursorSprite *self)
 {
  XcursorImage *image;

-  /* Either cursors are loaded from X cursors or buffers. Since
-   * buffers are converted over immediately, we can make sure to
-   * load this directly. */
-  g_assert (cursor->cursor != META_CURSOR_NONE);
-
-  image = load_cursor_on_client (cursor->cursor);
-  if (!image)
+  if (!meta_cursor_sprite_is_animated (self))
    return;

-  meta_cursor_image_load_from_xcursor_image (&cursor->image, image);
-  XcursorImageDestroy (image);
+  self->current_frame++;
+
+  if (self->current_frame >= self->xcursor_images->nimage)
+    self->current_frame = 0;
+
+  image = meta_cursor_sprite_get_current_frame_image (self);
+
+  g_clear_pointer (&self->texture, cogl_object_unref);
+  meta_cursor_sprite_load_from_xcursor_image (self, image);
 }

-MetaCursorReference *
-meta_cursor_reference_from_theme (MetaCursor cursor)
+guint
+meta_cursor_sprite_get_current_frame_time (MetaCursorSprite *self)
 {
-  MetaCursorReference *self = g_slice_new0 (MetaCursorReference);
-  self->ref_count = 1;
-  self->cursor = cursor;
-  return self;
+  if (!meta_cursor_sprite_is_animated (self))
+    return 0;
+
+  return self->xcursor_images->images[self->current_frame]->delay;
+}
+
+gboolean
+meta_cursor_sprite_is_animated (MetaCursorSprite *self)
+{
+  return (self->xcursor_images &&
+          self->xcursor_images->nimage > 1);
+}
+
+MetaCursorSprite *
+meta_cursor_sprite_new (void)
+{
+  return g_object_new (META_TYPE_CURSOR_SPRITE, NULL);
 }

-#ifdef HAVE_WAYLAND
 static void
-meta_cursor_image_load_from_buffer (MetaCursorImage    *image,
-                                    struct wl_resource *buffer,
-                                    int                 hot_x,
-                                    int                 hot_y)
+meta_cursor_sprite_load_from_theme (MetaCursorSprite *self)
 {
-  ClutterBackend *backend;
-  CoglContext *cogl_context;
+  XcursorImage *image;

-  image->hot_x = hot_x;
-  image->hot_y = hot_y;
+  g_assert (self->cursor != META_CURSOR_NONE);

-  backend = clutter_get_default_backend ();
-  cogl_context = clutter_backend_get_cogl_context (backend);
-
-  image->texture = cogl_wayland_texture_2d_new_from_buffer (cogl_context, buffer, NULL);
-
-#ifdef HAVE_NATIVE_BACKEND
-  struct gbm_device *gbm = get_gbm_device ();
-  if (gbm)
+  /* We might be reloading with a different scale. If so clear the old data. */
+  if (self->xcursor_images)
    {
-      uint32_t gbm_format;
-      uint64_t cursor_width, cursor_height;
-      uint width, height;
-
-      width = cogl_texture_get_width (COGL_TEXTURE (image->texture));
-      height = cogl_texture_get_height (COGL_TEXTURE (image->texture));
-
-      struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get (buffer);
-      if (shm_buffer)
-        {
-          int rowstride = wl_shm_buffer_get_stride (shm_buffer);
-
-          wl_shm_buffer_begin_access (shm_buffer);
-
-          switch (wl_shm_buffer_get_format (shm_buffer))
-            {
-#if G_BYTE_ORDER == G_BIG_ENDIAN
-            case WL_SHM_FORMAT_ARGB8888:
-              gbm_format = GBM_FORMAT_ARGB8888;
-              break;
-            case WL_SHM_FORMAT_XRGB8888:
-              gbm_format = GBM_FORMAT_XRGB8888;
-              break;
-#else
-            case WL_SHM_FORMAT_ARGB8888:
-              gbm_format = GBM_FORMAT_ARGB8888;
-              break;
-            case WL_SHM_FORMAT_XRGB8888:
-              gbm_format = GBM_FORMAT_XRGB8888;
-              break;
-#endif
-            default:
-              g_warn_if_reached ();
-              gbm_format = GBM_FORMAT_ARGB8888;
-            }
-
-          meta_cursor_image_load_gbm_buffer (gbm,
-                                             image,
-                                             (uint8_t *) wl_shm_buffer_get_data (shm_buffer),
-                                             width, height, rowstride,
-                                             gbm_format);
-
-          wl_shm_buffer_end_access (shm_buffer);
-        }
-      else
-        {
-          /* HW cursors have a predefined size (at least 64x64), which usually is bigger than cursor theme
-             size, so themed cursors must be padded with transparent pixels to fill the
-             overlay. This is trivial if we have CPU access to the data, but it's not
-             possible if the buffer is in GPU memory (and possibly tiled too), so if we
-             don't get the right size, we fallback to GL.
-          */
-          get_hardware_cursor_size (&cursor_width, &cursor_height);
-
-          if (width != cursor_width || height != cursor_height)
-            {
-              meta_warning ("Invalid cursor size (must be 64x64), falling back to software (GL) cursors\n");
-              return;
-            }
-
-          image->bo = gbm_bo_import (gbm, GBM_BO_IMPORT_WL_BUFFER, buffer, GBM_BO_USE_CURSOR);
-          if (!image->bo)
-            meta_warning ("Importing HW cursor from wl_buffer failed\n");
-        }
+      g_clear_pointer (&self->texture, cogl_object_unref);
+      XcursorImagesDestroy (self->xcursor_images);
    }
-#endif
+
+  self->current_frame = 0;
+  self->xcursor_images = load_cursor_on_client (self->cursor,
+                                                self->theme_scale);
+  if (!self->xcursor_images)
+    meta_fatal ("Could not find cursor. Perhaps set XCURSOR_PATH?");
+
+  image = meta_cursor_sprite_get_current_frame_image (self);
+  meta_cursor_sprite_load_from_xcursor_image (self, image);
+
+  self->theme_dirty = FALSE;
 }

-MetaCursorReference *
-meta_cursor_reference_from_buffer (struct wl_resource *buffer,
-                                   int                 hot_x,
-                                   int                 hot_y)
+MetaCursorSprite *
+meta_cursor_sprite_from_theme (MetaCursor cursor)
 {
-  MetaCursorReference *self;
+  MetaCursorSprite *self;

-  self = g_slice_new0 (MetaCursorReference);
-  self->ref_count = 1;
-  meta_cursor_image_load_from_buffer (&self->image, buffer, hot_x, hot_y);
+  self = meta_cursor_sprite_new ();
+
+  self->cursor = cursor;
+  self->theme_dirty = TRUE;

  return self;
 }
-#endif
+
+void
+meta_cursor_sprite_set_texture (MetaCursorSprite *self,
+                                CoglTexture      *texture,
+                                int               hot_x,
+                                int               hot_y)
+{
+  g_clear_pointer (&self->texture, cogl_object_unref);
+  if (texture)
+    self->texture = cogl_object_ref (texture);
+  self->hot_x = hot_x;
+  self->hot_y = hot_y;
+}
+
+void
+meta_cursor_sprite_set_texture_scale (MetaCursorSprite *self,
+                                      float             scale)
+{
+  self->texture_scale = scale;
+}
+
+void
+meta_cursor_sprite_set_theme_scale (MetaCursorSprite *self,
+                                    int               theme_scale)
+{
+  if (self->theme_scale != theme_scale)
+    self->theme_dirty = TRUE;
+  self->theme_scale = theme_scale;
+}

 CoglTexture *
-meta_cursor_reference_get_cogl_texture (MetaCursorReference *cursor,
-                                        int                 *hot_x,
-                                        int                 *hot_y)
+meta_cursor_sprite_get_cogl_texture (MetaCursorSprite *self)
 {
-  if (!cursor->image.texture)
-    load_cursor_image (cursor);
-
-  if (hot_x)
-    *hot_x = cursor->image.hot_x;
-  if (hot_y)
-    *hot_y = cursor->image.hot_y;
-
-  return COGL_TEXTURE (cursor->image.texture);
+  return COGL_TEXTURE (self->texture);
 }

-#ifdef HAVE_NATIVE_BACKEND
-struct gbm_bo *
-meta_cursor_reference_get_gbm_bo (MetaCursorReference *cursor,
-                                  int                 *hot_x,
-                                  int                 *hot_y)
-{
-  if (!cursor->image.bo)
-    load_cursor_image (cursor);
-
-  if (hot_x)
-    *hot_x = cursor->image.hot_x;
-  if (hot_y)
-    *hot_y = cursor->image.hot_y;
-  return cursor->image.bo;
-}
-#endif
-
 MetaCursor
-meta_cursor_reference_get_meta_cursor (MetaCursorReference *cursor)
+meta_cursor_sprite_get_meta_cursor (MetaCursorSprite *self)
 {
-  return cursor->cursor;
+  return self->cursor;
+}
+
+void
+meta_cursor_sprite_get_hotspot (MetaCursorSprite *self,
+                                int              *hot_x,
+                                int              *hot_y)
+{
+  *hot_x = self->hot_x;
+  *hot_y = self->hot_y;
+}
+
+float
+meta_cursor_sprite_get_texture_scale (MetaCursorSprite *self)
+{
+  return self->texture_scale;
+}
+
+void
+meta_cursor_sprite_prepare_at (MetaCursorSprite *self,
+                               int               x,
+                               int               y)
+{
+  g_signal_emit (self, signals[PREPARE_AT], 0, x, y);
+}
+
+void
+meta_cursor_sprite_realize_texture (MetaCursorSprite *self)
+{
+  if (self->theme_dirty)
+    meta_cursor_sprite_load_from_theme (self);
+}
+
+static void
+meta_cursor_sprite_init (MetaCursorSprite *self)
+{
+  self->texture_scale = 1.0f;
+}
+
+static void
+meta_cursor_sprite_finalize (GObject *object)
+{
+  MetaCursorSprite *self = META_CURSOR_SPRITE (object);
+
+  if (self->xcursor_images)
+    XcursorImagesDestroy (self->xcursor_images);
+
+  g_clear_pointer (&self->texture, cogl_object_unref);
+
+  G_OBJECT_CLASS (meta_cursor_sprite_parent_class)->finalize (object);
+}
+
+static void
+meta_cursor_sprite_class_init (MetaCursorSpriteClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = meta_cursor_sprite_finalize;
+
+  signals[PREPARE_AT] = g_signal_new ("prepare-at",
+                                      G_TYPE_FROM_CLASS (object_class),
+                                      G_SIGNAL_RUN_LAST,
+                                      0,
+                                      NULL, NULL, NULL,
+                                      G_TYPE_NONE, 2,
+                                      G_TYPE_INT,
+                                      G_TYPE_INT);
 }
--- a/src/backends/meta-cursor.h
+++ b/src/backends/meta-cursor.h
@@ -22,25 +22,54 @@
 #ifndef META_CURSOR_H
 #define META_CURSOR_H

-typedef struct _MetaCursorReference MetaCursorReference;
-
-MetaCursorReference * meta_cursor_reference_ref (MetaCursorReference *cursor);
-void meta_cursor_reference_unref (MetaCursorReference *cursor);
-
 #include <meta/common.h>
+#include <meta/boxes.h>

-MetaCursorReference * meta_cursor_reference_from_theme  (MetaCursor          cursor);
+typedef struct _MetaCursorSprite MetaCursorSprite;

-#ifdef HAVE_WAYLAND
-#include <wayland-server.h>
-MetaCursorReference * meta_cursor_reference_from_buffer (struct wl_resource *buffer,
-                                                         int                 hot_x,
-                                                         int                 hot_y);
-#endif
+#define META_TYPE_CURSOR_SPRITE (meta_cursor_sprite_get_type ())
+G_DECLARE_FINAL_TYPE (MetaCursorSprite,
+                      meta_cursor_sprite,
+                      META, CURSOR_SPRITE,
+                      GObject);

-MetaCursor meta_cursor_reference_get_meta_cursor (MetaCursorReference *cursor);
+MetaCursorSprite * meta_cursor_sprite_new (void);
+
+MetaCursorSprite * meta_cursor_sprite_from_theme  (MetaCursor cursor);
+
+
+void meta_cursor_sprite_set_theme_scale (MetaCursorSprite *self,
+                                         int               scale);
+
+MetaCursor meta_cursor_sprite_get_meta_cursor (MetaCursorSprite *self);

 Cursor meta_cursor_create_x_cursor (Display    *xdisplay,
                                    MetaCursor  cursor);

+void meta_cursor_sprite_prepare_at (MetaCursorSprite *self,
+                                    int               x,
+                                    int               y);
+
+void meta_cursor_sprite_realize_texture (MetaCursorSprite *self);
+
+void meta_cursor_sprite_set_texture (MetaCursorSprite *self,
+                                     CoglTexture      *texture,
+                                     int               hot_x,
+                                     int               hot_y);
+
+void meta_cursor_sprite_set_texture_scale (MetaCursorSprite *self,
+                                           float             scale);
+
+CoglTexture *meta_cursor_sprite_get_cogl_texture (MetaCursorSprite *self);
+
+void meta_cursor_sprite_get_hotspot (MetaCursorSprite *self,
+                                     int              *hot_x,
+                                     int              *hot_y);
+
+float meta_cursor_sprite_get_texture_scale (MetaCursorSprite *self);
+
+gboolean meta_cursor_sprite_is_animated            (MetaCursorSprite *self);
+void     meta_cursor_sprite_tick_frame             (MetaCursorSprite *self);
+guint    meta_cursor_sprite_get_current_frame_time (MetaCursorSprite *self);
+
 #endif /* META_CURSOR_H */
--- a/src/backends/meta-input-settings-private.h
+++ b/src/backends/meta-input-settings-private.h
@@ -63,9 +63,9 @@ struct _MetaInputSettingsClass
  void (* set_invert_scroll) (MetaInputSettings  *settings,
                              ClutterInputDevice *device,
                              gboolean            inverted);
-  void (* set_scroll_method) (MetaInputSettings            *settings,
-                              ClutterInputDevice           *device,
-                              GDesktopTouchpadScrollMethod  mode);
+  void (* set_edge_scroll)   (MetaInputSettings  *settings,
+                              ClutterInputDevice *device,
+                              gboolean            enabled);
  void (* set_scroll_button) (MetaInputSettings  *settings,
                              ClutterInputDevice *device,
                              guint               button);
--- a/src/backends/meta-input-settings.c
+++ b/src/backends/meta-input-settings.c
@@ -209,6 +209,10 @@ update_touchpad_left_handed (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  gboolean enabled = FALSE;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  handedness = g_settings_get_enum (priv->touchpad_settings, "left-handed");
@@ -230,7 +234,6 @@ update_touchpad_left_handed (MetaInputSettings  *input_settings,

  if (device)
    {
-      g_assert (clutter_input_device_get_device_type (device) == CLUTTER_TOUCHPAD_DEVICE);
      settings_device_set_bool_setting (input_settings, device,
                                        input_settings_class->set_left_handed,
                                        enabled);
@@ -251,13 +254,16 @@ update_mouse_left_handed (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  gboolean enabled;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_POINTER_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  enabled = g_settings_get_boolean (priv->mouse_settings, "left-handed");

  if (device)
    {
-      g_assert (clutter_input_device_get_device_type (device) == CLUTTER_POINTER_DEVICE);
      settings_device_set_bool_setting (input_settings, device,
                                        input_settings_class->set_left_handed,
                                        enabled);
@@ -366,6 +372,10 @@ update_touchpad_tap_enabled (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  gboolean enabled;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  enabled = g_settings_get_boolean (priv->touchpad_settings, "tap-to-click");
@@ -385,28 +395,32 @@ update_touchpad_tap_enabled (MetaInputSettings  *input_settings,
 }

 static void
-update_touchpad_scroll_method (MetaInputSettings *input_settings,
-                               ClutterInputDevice *device)
+update_touchpad_edge_scroll (MetaInputSettings *input_settings,
+                             ClutterInputDevice *device)
 {
  MetaInputSettingsClass *input_settings_class;
-  GDesktopTouchpadScrollMethod method;
+  gboolean edge_scroll_enabled;
  MetaInputSettingsPrivate *priv;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
-  method = g_settings_get_enum (priv->touchpad_settings, "scroll-method");
+  edge_scroll_enabled = g_settings_get_boolean (priv->touchpad_settings, "edge-scrolling-enabled");

  if (device)
    {
-      settings_device_set_uint_setting (input_settings, device,
-                                        input_settings_class->set_scroll_method,
-                                        method);
+      settings_device_set_bool_setting (input_settings, device,
+                                        input_settings_class->set_edge_scroll,
+                                        edge_scroll_enabled);
    }
  else
    {
-      settings_set_uint_setting (input_settings, CLUTTER_TOUCHPAD_DEVICE,
-                                 (ConfigUintFunc) input_settings_class->set_scroll_method,
-                                 method);
+      settings_set_bool_setting (input_settings, CLUTTER_TOUCHPAD_DEVICE,
+                                 (ConfigBoolFunc) input_settings_class->set_edge_scroll,
+                                 edge_scroll_enabled);
    }
 }

@@ -415,9 +429,13 @@ update_touchpad_click_method (MetaInputSettings *input_settings,
                              ClutterInputDevice *device)
 {
  MetaInputSettingsClass *input_settings_class;
-  GDesktopTouchpadScrollMethod method;
+  GDesktopTouchpadClickMethod method;
  MetaInputSettingsPrivate *priv;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  method = g_settings_get_enum (priv->touchpad_settings, "click-method");
@@ -444,6 +462,10 @@ update_touchpad_send_events (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  GDesktopDeviceSendEvents mode;

+  if (device &&
+      clutter_input_device_get_device_type (device) != CLUTTER_TOUCHPAD_DEVICE)
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  mode = g_settings_get_enum (priv->touchpad_settings, "send-events");
@@ -486,27 +508,28 @@ update_trackball_scroll_button (MetaInputSettings  *input_settings,
  MetaInputSettingsPrivate *priv;
  guint button;

+  if (device && !device_is_trackball (device))
+    return;
+
  priv = meta_input_settings_get_instance_private (input_settings);
  input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
  /* This key is 'i' in the schema but it also specifies a minimum
   * range of 0 so the cast here is safe. */
  button = (guint) g_settings_get_int (priv->trackball_settings, "scroll-wheel-emulation-button");

-  if (device && device_is_trackball (device))
+  if (device)
    {
      input_settings_class->set_scroll_button (input_settings, device, button);
    }
  else if (!device)
    {
-      MetaInputSettingsPrivate *priv;
      const GSList *devices;

-      priv = meta_input_settings_get_instance_private (input_settings);
      devices = clutter_device_manager_peek_devices (priv->device_manager);

      while (devices)
        {
-          ClutterInputDevice *device = devices->data;
+          device = devices->data;

          if (device_is_trackball (device))
            input_settings_class->set_scroll_button (input_settings, device, button);
@@ -622,8 +645,8 @@ meta_input_settings_changed_cb (GSettings  *settings,
        update_touchpad_tap_enabled (input_settings, NULL);
      else if (strcmp (key, "send-events") == 0)
        update_touchpad_send_events (input_settings, NULL);
-      else if (strcmp (key, "scroll-method") == 0)
-        update_touchpad_scroll_method (input_settings, NULL);
+      else if (strcmp (key, "edge-scrolling-enabled") == 0)
+        update_touchpad_edge_scroll (input_settings, NULL);
      else if (strcmp (key, "click-method") == 0)
        update_touchpad_click_method (input_settings, NULL);
    }
@@ -748,7 +771,7 @@ apply_device_settings (MetaInputSettings  *input_settings,
  update_device_natural_scroll (input_settings, device);
  update_touchpad_tap_enabled (input_settings, device);
  update_touchpad_send_events (input_settings, device);
-  update_touchpad_scroll_method (input_settings, device);
+  update_touchpad_edge_scroll (input_settings, device);
  update_touchpad_click_method (input_settings, device);

  update_trackball_scroll_button (input_settings, device);
--- a/src/backends/meta-monitor-config.c
+++ b/src/backends/meta-monitor-config.c
@@ -65,6 +65,7 @@ typedef struct {

  gboolean is_primary;
  gboolean is_presentation;
+  gboolean is_underscanning;
 } MetaOutputConfig;

 typedef struct {
@@ -82,7 +83,8 @@ struct _MetaMonitorConfig {
  gboolean current_is_for_laptop_lid;
  MetaConfiguration *previous;

-  GFile *file;
+  GFile *user_file;
+  GFile *system_file;
  GCancellable *save_cancellable;

  UpClient *up_client;
@@ -238,6 +240,7 @@ meta_monitor_config_init (MetaMonitorConfig *self)
 {
  const char *filename;
  char *path;
+  const char * const *system_dirs;

  self->configs = g_hash_table_new_full (config_hash, config_equal, NULL, (GDestroyNotify) config_unref);

@@ -246,9 +249,17 @@ meta_monitor_config_init (MetaMonitorConfig *self)
    filename = "monitors.xml";

  path = g_build_filename (g_get_user_config_dir (), filename, NULL);
-  self->file = g_file_new_for_path (path);
+  self->user_file = g_file_new_for_path (path);
  g_free (path);

+  for (system_dirs = g_get_system_config_dirs (); !self->system_file && *system_dirs; system_dirs++)
+    {
+      path = g_build_filename (*system_dirs, filename, NULL);
+      if (g_file_test (path, G_FILE_TEST_EXISTS))
+        self->system_file = g_file_new_for_path (path);
+      g_free (path);
+    }
+
  self->up_client = up_client_new ();
  self->lid_is_closed = up_client_get_lid_is_closed (self->up_client);

@@ -393,7 +404,8 @@ handle_start_element (GMarkupParseContext  *context,
             strcmp (element_name, "reflect_x") == 0 ||
             strcmp (element_name, "reflect_y") == 0 ||
             strcmp (element_name, "primary") == 0 ||
-             strcmp (element_name, "presentation") == 0) && parser->unknown_count == 0)
+             strcmp (element_name, "presentation") == 0 ||
+             strcmp (element_name, "underscanning") == 0) && parser->unknown_count == 0)
          {
            parser->state = STATE_OUTPUT_FIELD;

@@ -477,8 +489,8 @@ handle_end_element (GMarkupParseContext  *context,
              }
            else
              {
-                if (parser->output.rect.width == 0 &&
-                    parser->output.rect.width == 0)
+                if (parser->output.rect.width == 0 ||
+                    parser->output.rect.height == 0)
                  parser->output.enabled = FALSE;
                else
                  parser->output.enabled = TRUE;
@@ -700,6 +712,8 @@ handle_text (GMarkupParseContext *context,
          parser->output.is_primary = read_bool (text, text_len, error);
        else if (strcmp (parser->output_field, "presentation") == 0)
          parser->output.is_presentation = read_bool (text, text_len, error);
+        else if (strcmp (parser->output_field, "underscanning") == 0)
+          parser->output.is_underscanning = read_bool (text, text_len, error);
        else
          g_assert_not_reached ();
        return;
@@ -717,8 +731,8 @@ static const GMarkupParser config_parser = {
  .text = handle_text,
 };

-static void
-meta_monitor_config_load (MetaMonitorConfig  *self)
+static gboolean
+load_config_file (MetaMonitorConfig *self, GFile *file)
 {
  char *contents;
  gsize size;
@@ -736,14 +750,12 @@ meta_monitor_config_load (MetaMonitorConfig  *self)
  */

  error = NULL;
-  ok = g_file_load_contents (self->file, NULL, &contents, &size, NULL, &error);
+  ok = g_file_load_contents (file, NULL, &contents, &size, NULL, &error);
  if (!ok)
    {
-      if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
-        meta_warning ("Failed to load stored monitor configuration: %s\n", error->message);

      g_error_free (error);
-      return;
+      return FALSE;
    }

  memset (&parser, 0, sizeof (ConfigParser));
@@ -772,6 +784,17 @@ meta_monitor_config_load (MetaMonitorConfig  *self)

  g_markup_parse_context_free (context);
  g_free (contents);
+
+  return ok;
+}
+
+static void
+meta_monitor_config_load (MetaMonitorConfig *self)
+{
+  if (self->user_file && load_config_file (self, self->user_file))
+    return;
+  if (self->system_file && load_config_file (self, self->system_file))
+    return;
 }

 MetaMonitorConfig *
@@ -863,14 +886,14 @@ apply_configuration (MetaMonitorConfig  *self,
                     MetaConfiguration  *config,
 		     MetaMonitorManager *manager)
 {
-  GPtrArray *crtcs, *outputs;
-  gboolean ret = FALSE;
+  g_autoptr(GPtrArray) crtcs = NULL;
+  g_autoptr(GPtrArray) outputs = NULL;

  crtcs = g_ptr_array_new_full (config->n_outputs, (GDestroyNotify)meta_crtc_info_free);
  outputs = g_ptr_array_new_full (config->n_outputs, (GDestroyNotify)meta_output_info_free);

  if (!meta_monitor_config_assign_crtcs (config, manager, crtcs, outputs))
-    goto out;
+    return FALSE;

  meta_monitor_manager_apply_configuration (manager,
                                            (MetaCRTCInfo**)crtcs->pdata, crtcs->len,
@@ -882,12 +905,7 @@ apply_configuration (MetaMonitorConfig  *self,
   * inside turn_off_laptop_display / apply_configuration_with_lid */
  self->current_is_for_laptop_lid = FALSE;

-  ret = TRUE;
-
- out:
-  g_ptr_array_unref (crtcs);
-  g_ptr_array_unref (outputs);
-  return ret;
+  return TRUE;
 }

 static gboolean
@@ -1056,12 +1074,12 @@ meta_monitor_config_apply_stored (MetaMonitorConfig  *self,
 * which are internal monitors), or failing that, the one with the
 * best resolution
 */
-static MetaOutput *
+static int
 find_primary_output (MetaOutput *outputs,
                     unsigned    n_outputs)
 {
  unsigned i;
-  MetaOutput *best;
+  int best;
  int best_width, best_height;

  g_assert (n_outputs >= 1);
@@ -1069,23 +1087,23 @@ find_primary_output (MetaOutput *outputs,
  for (i = 0; i < n_outputs; i++)
    {
      if (outputs[i].is_primary)
-        return &outputs[i];
+        return i;
    }

  for (i = 0; i < n_outputs; i++)
    {
      if (output_is_laptop (&outputs[i]))
-        return &outputs[i];
+        return i;
    }

-  best = NULL;
+  best = -1;
  best_width = 0; best_height = 0;
  for (i = 0; i < n_outputs; i++)
    {
      if (outputs[i].preferred_mode->width * outputs[i].preferred_mode->height >
          best_width * best_height)
        {
-          best = &outputs[i];
+          best = i;
          best_width = outputs[i].preferred_mode->width;
          best_height = outputs[i].preferred_mode->height;
        }
@@ -1123,7 +1141,7 @@ make_suggested_config (MetaMonitorConfig *self,
                       MetaConfiguration *config)
 {
  unsigned int i;
-  MetaOutput *primary;
+  int primary;
  GList *region = NULL;

  g_return_val_if_fail (config != NULL, FALSE);
@@ -1131,7 +1149,7 @@ make_suggested_config (MetaMonitorConfig *self,

  for (i = 0; i < n_outputs; i++)
    {
-      gboolean is_primary = (&outputs[i] == primary);
+      gboolean is_primary = ((int)i == primary);

      if (outputs[i].suggested_x < 0 || outputs[i].suggested_y < 0)
          return FALSE;
@@ -1158,6 +1176,81 @@ make_suggested_config (MetaMonitorConfig *self,
  return TRUE;
 }

+static void
+config_one_untiled_output (MetaOutput *outputs,
+                           MetaConfiguration *config,
+                           int idx, gboolean is_primary,
+                           int *x, unsigned long *output_configured_bitmap)
+{
+  MetaOutput *output = &outputs[idx];
+
+  if (*output_configured_bitmap & (1 << idx))
+    return;
+
+  init_config_from_preferred_mode (&config->outputs[idx], output);
+  config->outputs[idx].is_primary = is_primary;
+  config->outputs[idx].rect.x = *x;
+  *x += config->outputs[idx].rect.width;
+  *output_configured_bitmap |= (1 << idx);
+}
+
+static void
+config_one_tiled_group (MetaOutput *outputs,
+                        MetaConfiguration *config,
+                        int base_idx, gboolean is_primary,
+                        int n_outputs,
+                        int *x, unsigned long *output_configured_bitmap)
+{
+  guint32 num_h_tile, num_v_tile, ht, vt;
+  int j;
+  int cur_x, cur_y, addx = 0;
+
+  if (*output_configured_bitmap & (1 << base_idx))
+      return;
+
+  if (outputs[base_idx].tile_info.group_id == 0)
+    return;
+
+  cur_x = cur_y = 0;
+  num_h_tile = outputs[base_idx].tile_info.max_h_tiles;
+  num_v_tile = outputs[base_idx].tile_info.max_v_tiles;
+
+  /* iterate over horizontal tiles */
+  cur_x = *x;
+  for (ht = 0; ht < num_h_tile; ht++)
+    {
+      cur_y = 0;
+      addx = 0;
+      for (vt = 0; vt < num_v_tile; vt++)
+        {
+          for (j = 0; j < n_outputs; j++)
+            {
+              if (outputs[j].tile_info.group_id != outputs[base_idx].tile_info.group_id)
+                continue;
+
+              if (outputs[j].tile_info.loc_h_tile != ht ||
+                  outputs[j].tile_info.loc_v_tile != vt)
+                continue;
+
+              if (ht == 0 && vt == 0 && is_primary)
+                config->outputs[j].is_primary = TRUE;
+
+              init_config_from_preferred_mode (&config->outputs[j], &outputs[j]);
+              config->outputs[j].rect.x = cur_x;
+              config->outputs[j].rect.y = cur_y;
+
+              *output_configured_bitmap |= (1 << j);
+              cur_y += outputs[j].tile_info.tile_h;
+              if (vt == 0)
+                addx += outputs[j].tile_info.tile_w;
+            }
+        }
+      cur_x += addx;
+    }
+  *x = cur_x;
+
+}
+
 static void
 make_linear_config (MetaMonitorConfig *self,
                    MetaOutput        *outputs,
@@ -1166,31 +1259,41 @@ make_linear_config (MetaMonitorConfig *self,
                    int                max_height,
                    MetaConfiguration *config)
 {
-  MetaOutput *primary;
+  unsigned long output_configured_bitmap = 0;
  unsigned i;
  int x;
+  int primary;

  g_return_if_fail (config != NULL);

  primary = find_primary_output (outputs, n_outputs);

-  x = primary->preferred_mode->width;
+  x = 0;
+  /* set the primary up first at 0 */
+  if (outputs[primary].tile_info.group_id)
+    {
+      config_one_tiled_group (outputs, config, primary, TRUE, n_outputs,
+                              &x, &output_configured_bitmap);
+    }
+  else
+    {
+      config_one_untiled_output (outputs, config, primary, TRUE,
+                                 &x, &output_configured_bitmap);
+    }
+
+  /* then add other tiled monitors */
  for (i = 0; i < n_outputs; i++)
    {
-      gboolean is_primary = (&outputs[i] == primary);
+      config_one_tiled_group (outputs, config, i, FALSE, n_outputs,
+                              &x, &output_configured_bitmap);
+    }

-      init_config_from_preferred_mode (&config->outputs[i], &outputs[i]);
-      config->outputs[i].is_primary = is_primary;
+  /* then add remaining monitors */
+  for (i = 0; i < n_outputs; i++)
+    {
+      config_one_untiled_output (outputs, config, i, FALSE,
+                                 &x, &output_configured_bitmap);

-      if (is_primary)
-        {
-          config->outputs[i].rect.x = 0;
-        }
-      else
-        {
-          config->outputs[i].rect.x = x;
-          x += config->outputs[i].rect.width;
-        }
    }
 }

@@ -1314,7 +1417,7 @@ ensure_at_least_one_output (MetaMonitorConfig  *self,
                            unsigned            n_outputs)
 {
  MetaConfiguration *config;
-  MetaOutput *primary;
+  int primary;
  unsigned i;

  /* Check that we have at least one active output */
@@ -1332,7 +1435,7 @@ ensure_at_least_one_output (MetaMonitorConfig  *self,

  for (i = 0; i < n_outputs; i++)
    {
-      gboolean is_primary = (&outputs[i] == primary);
+      gboolean is_primary = ((int)i == primary);

      if (is_primary)
        {
@@ -1408,6 +1511,7 @@ init_config_from_output (MetaOutputConfig *config,
  config->transform = output->crtc->transform;
  config->is_primary = output->is_primary;
  config->is_presentation = output->is_presentation;
+  config->is_underscanning = output->is_underscanning;
 }

 void
@@ -1598,7 +1702,8 @@ meta_monitor_config_save (MetaMonitorConfig *self)
                                      "      <reflect_x>%s</reflect_x>\n"
                                      "      <reflect_y>no</reflect_y>\n"
                                      "      <primary>%s</primary>\n"
-                                      "      <presentation>%s</presentation>\n",
+                                      "      <presentation>%s</presentation>\n"
+                                      "      <underscanning>%s</underscanning>\n",
                                      output->rect.width,
                                      output->rect.height,
                                      refresh_rate,
@@ -1607,7 +1712,8 @@ meta_monitor_config_save (MetaMonitorConfig *self)
                                      rotation_map[output->transform & 0x3],
                                      output->transform >= META_MONITOR_TRANSFORM_FLIPPED ? "yes" : "no",
                                      output->is_primary ? "yes" : "no",
-                                      output->is_presentation ? "yes" : "no");
+                                      output->is_presentation ? "yes" : "no",
+                                      output->is_underscanning ? "yes" : "no");
            }

          g_string_append (buffer, "    </output>\n");
@@ -1622,7 +1728,7 @@ meta_monitor_config_save (MetaMonitorConfig *self)
  closure->config = g_object_ref (self);
  closure->buffer = buffer;

-  g_file_replace_contents_async (self->file,
+  g_file_replace_contents_async (self->user_file,
                                 buffer->str, buffer->len,
                                 NULL, /* etag */
                                 TRUE,
@@ -1740,7 +1846,7 @@ crtc_assignment_assign (CrtcAssignment       *assign,
    }
  else
    {
-      MetaCRTCInfo *info = g_slice_new0 (MetaCRTCInfo);
+      info = g_slice_new0 (MetaCRTCInfo);

      info->crtc = crtc;
      info->mode = mode;
@@ -1814,7 +1920,6 @@ real_assign_crtcs (CrtcAssignment     *assignment,
  MetaOutputKey *output_key;
  MetaOutputConfig *output_config;
  unsigned int i;
-  gboolean success;

  if (output_num == assignment->config->n_outputs)
    return TRUE;
@@ -1831,8 +1936,6 @@ real_assign_crtcs (CrtcAssignment     *assignment,
                                      &crtcs, &n_crtcs,
                                      &outputs, &n_outputs);

-  success = FALSE;
-
  for (i = 0; i < n_crtcs; i++)
    {
      MetaCRTC *crtc = &crtcs[i];
@@ -1879,10 +1982,7 @@ real_assign_crtcs (CrtcAssignment     *assignment,
                                              output))
                    {
                      if (real_assign_crtcs (assignment, output_num + 1))
-                        {
-                          success = TRUE;
-                          goto out;
-                        }
+                        return TRUE;

                      crtc_assignment_unassign (assignment, crtc, output);
                    }
@@ -1891,8 +1991,7 @@ real_assign_crtcs (CrtcAssignment     *assignment,
 	}
    }

-out:
-  return success;
+  return FALSE;
 }

 static gboolean
@@ -1941,6 +2040,7 @@ meta_monitor_config_assign_crtcs (MetaConfiguration  *config,
                                                &config->keys[i]);
      output_info->is_primary = output_config->is_primary;
      output_info->is_presentation = output_config->is_presentation;
+      output_info->is_underscanning = output_config->is_underscanning;

      g_ptr_array_add (outputs, output_info);
    }
--- a/src/backends/meta-monitor-manager-dummy.c
+++ b/src/backends/meta-monitor-manager-dummy.c
@@ -27,6 +27,10 @@

 #include "meta-monitor-manager-dummy.h"

+#include <stdlib.h>
+
+#include <meta/util.h>
+
 #define ALL_TRANSFORMS ((1 << (META_MONITOR_TRANSFORM_FLIPPED_270 + 1)) - 1)

 struct _MetaMonitorManagerDummy
@@ -44,9 +48,69 @@ G_DEFINE_TYPE (MetaMonitorManagerDummy, meta_monitor_manager_dummy, META_TYPE_MO
 static void
 meta_monitor_manager_dummy_read_current (MetaMonitorManager *manager)
 {
+  unsigned int num_monitors = 1;
+  int *monitor_scales = NULL;
+  const char *num_monitors_str;
+  const char *monitor_scales_str;
+  unsigned int i;
+  int current_x = 0;
+
+  /* To control what monitor configuration is generated, there are two available
+   * environmental variables that can be used:
+   *
+   * MUTTER_DEBUG_NUM_DUMMY_MONITORS
+   *
+   * Specifies the number of dummy monitors to include in the stage. Every
+   * monitor is 1024x786 pixels and they are placed on a horizontal row.
+   *
+   * MUTTER_DEBUG_DUMMY_MONITOR_SCALES
+   *
+   * A comma separated list that specifies the scales of the dummy monitors.
+   *
+   * For example the following configuration results in two monitors, where the
+   * first one has the monitor scale 1, and the other the monitor scale 2.
+   *
+   * MUTTER_DEBUG_NUM_DUMMY_MONITORS=2
+   * MUTTER_DEBUG_DUMMY_MONITOR_SCALES=1,2
+   */
+  num_monitors_str = getenv ("MUTTER_DEBUG_NUM_DUMMY_MONITORS");
+  if (num_monitors_str)
+    {
+      num_monitors = g_ascii_strtoll (num_monitors_str, NULL, 10);
+      if (num_monitors <= 0)
+        {
+          meta_warning ("Invalid number of dummy monitors");
+          num_monitors = 1;
+        }
+    }
+
+  monitor_scales = g_newa (int, num_monitors);
+  for (i = 0; i < num_monitors; i++)
+    monitor_scales[i] = 1;
+
+  monitor_scales_str = getenv ("MUTTER_DEBUG_DUMMY_MONITOR_SCALES");
+  if (monitor_scales_str)
+    {
+      gchar **scales_str_list;
+
+      scales_str_list = g_strsplit (monitor_scales_str, ",", -1);
+      if (g_strv_length (scales_str_list) != num_monitors)
+        meta_warning ("Number of specified monitor scales differ from number "
+                      "of monitors (defaults to 1).\n");
+      for (i = 0; i < num_monitors && scales_str_list[i]; i++)
+        {
+          int scale = g_ascii_strtoll (scales_str_list[i], NULL, 10);
+          if (scale == 1 || scale == 2)
+            monitor_scales[i] = scale;
+          else
+            meta_warning ("Invalid dummy monitor scale");
+        }
+      g_strfreev (scales_str_list);
+    }
+
  manager->max_screen_width = 65535;
  manager->max_screen_height = 65535;
-  manager->screen_width = 1024;
+  manager->screen_width = 1024 * num_monitors;
  manager->screen_height = 768;

  manager->modes = g_new0 (MetaMonitorMode, 1);
@@ -57,46 +121,52 @@ meta_monitor_manager_dummy_read_current (MetaMonitorManager *manager)
  manager->modes[0].height = 768;
  manager->modes[0].refresh_rate = 60.0;

-  manager->crtcs = g_new0 (MetaCRTC, 1);
-  manager->n_crtcs = 1;
+  manager->crtcs = g_new0 (MetaCRTC, num_monitors);
+  manager->n_crtcs = num_monitors;
+  manager->outputs = g_new0 (MetaOutput, num_monitors);
+  manager->n_outputs = num_monitors;

-  manager->crtcs[0].crtc_id = 1;
-  manager->crtcs[0].rect.x = 0;
-  manager->crtcs[0].rect.y = 0;
-  manager->crtcs[0].rect.width = manager->modes[0].width;
-  manager->crtcs[0].rect.height = manager->modes[0].height;
-  manager->crtcs[0].current_mode = &manager->modes[0];
-  manager->crtcs[0].transform = META_MONITOR_TRANSFORM_NORMAL;
-  manager->crtcs[0].all_transforms = ALL_TRANSFORMS;
-  manager->crtcs[0].is_dirty = FALSE;
-  manager->crtcs[0].logical_monitor = NULL;
+  for (i = 0; i < num_monitors; i++)
+    {
+      manager->crtcs[i].crtc_id = i + 1;
+      manager->crtcs[i].rect.x = current_x;
+      manager->crtcs[i].rect.y = 0;
+      manager->crtcs[i].rect.width = manager->modes[0].width;
+      manager->crtcs[i].rect.height = manager->modes[0].height;
+      manager->crtcs[i].current_mode = &manager->modes[0];
+      manager->crtcs[i].transform = META_MONITOR_TRANSFORM_NORMAL;
+      manager->crtcs[i].all_transforms = ALL_TRANSFORMS;
+      manager->crtcs[i].is_dirty = FALSE;
+      manager->crtcs[i].logical_monitor = NULL;

-  manager->outputs = g_new0 (MetaOutput, 1);
-  manager->n_outputs = 1;
+      current_x += manager->crtcs[i].rect.width;

-  manager->outputs[0].crtc = &manager->crtcs[0];
-  manager->outputs[0].winsys_id = 1;
-  manager->outputs[0].name = g_strdup ("LVDS");
-  manager->outputs[0].vendor = g_strdup ("MetaProducts Inc.");
-  manager->outputs[0].product = g_strdup ("unknown");
-  manager->outputs[0].serial = g_strdup ("0xC0FFEE");
-  manager->outputs[0].width_mm = 222;
-  manager->outputs[0].height_mm = 125;
-  manager->outputs[0].subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
-  manager->outputs[0].preferred_mode = &manager->modes[0];
-  manager->outputs[0].n_modes = 1;
-  manager->outputs[0].modes = g_new0 (MetaMonitorMode *, 1);
-  manager->outputs[0].modes[0] = &manager->modes[0];
-  manager->outputs[0].n_possible_crtcs = 1;
-  manager->outputs[0].possible_crtcs = g_new0 (MetaCRTC *, 1);
-  manager->outputs[0].possible_crtcs[0] = &manager->crtcs[0];
-  manager->outputs[0].n_possible_clones = 0;
-  manager->outputs[0].possible_clones = g_new0 (MetaOutput *, 0);
-  manager->outputs[0].backlight = -1;
-  manager->outputs[0].backlight_min = 0;
-  manager->outputs[0].backlight_max = 0;
-  manager->outputs[0].connector_type = META_CONNECTOR_TYPE_LVDS;
-  manager->outputs[0].scale = 1;
+      manager->outputs[i].crtc = &manager->crtcs[i];
+      manager->outputs[i].winsys_id = i + 1;
+      manager->outputs[i].name = g_strdup_printf ("LVDS%d", i + 1);
+      manager->outputs[i].vendor = g_strdup ("MetaProducts Inc.");
+      manager->outputs[i].product = g_strdup ("unknown");
+      manager->outputs[i].serial = g_strdup ("0xC0FFEE");
+      manager->outputs[i].suggested_x = -1;
+      manager->outputs[i].suggested_y = -1;
+      manager->outputs[i].width_mm = 222;
+      manager->outputs[i].height_mm = 125;
+      manager->outputs[i].subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
+      manager->outputs[i].preferred_mode = &manager->modes[0];
+      manager->outputs[i].n_modes = 1;
+      manager->outputs[i].modes = g_new0 (MetaMonitorMode *, 1);
+      manager->outputs[i].modes[0] = &manager->modes[0];
+      manager->outputs[i].n_possible_crtcs = 1;
+      manager->outputs[i].possible_crtcs = g_new0 (MetaCRTC *, 1);
+      manager->outputs[i].possible_crtcs[0] = &manager->crtcs[i];
+      manager->outputs[i].n_possible_clones = 0;
+      manager->outputs[i].possible_clones = g_new0 (MetaOutput *, 0);
+      manager->outputs[i].backlight = -1;
+      manager->outputs[i].backlight_min = 0;
+      manager->outputs[i].backlight_max = 0;
+      manager->outputs[i].connector_type = META_CONNECTOR_TYPE_LVDS;
+      manager->outputs[i].scale = monitor_scales[i];
+    }
 }

 static void
@@ -127,7 +197,7 @@ meta_monitor_manager_dummy_apply_config (MetaMonitorManager *manager,
        {
          MetaMonitorMode *mode;
          MetaOutput *output;
-          int i, n_outputs;
+          unsigned int j;
          int width, height;

          mode = crtc_info->mode;
@@ -153,10 +223,9 @@ meta_monitor_manager_dummy_apply_config (MetaMonitorManager *manager,
          screen_width = MAX (screen_width, crtc_info->x + width);
          screen_height = MAX (screen_height, crtc_info->y + height);

-          n_outputs = crtc_info->outputs->len;
-          for (i = 0; i < n_outputs; i++)
+          for (j = 0; j < crtc_info->outputs->len; j++)
            {
-              output = ((MetaOutput**)crtc_info->outputs->pdata)[i];
+              output = ((MetaOutput**)crtc_info->outputs->pdata)[j];

              output->is_dirty = TRUE;
              output->crtc = crtc;
--- a/src/backends/meta-monitor-manager-private.h
+++ b/src/backends/meta-monitor-manager-private.h
@@ -56,6 +56,7 @@ typedef struct _MetaMonitorMode MetaMonitorMode;
 typedef struct _MetaMonitorInfo MetaMonitorInfo;
 typedef struct _MetaCRTCInfo MetaCRTCInfo;
 typedef struct _MetaOutputInfo MetaOutputInfo;
+typedef struct _MetaTileInfo MetaTileInfo;

 typedef enum {
  META_MONITOR_TRANSFORM_NORMAL,
@@ -89,6 +90,17 @@ typedef enum {
  META_CONNECTOR_TYPE_DSI = 16,
 } MetaConnectorType;

+struct _MetaTileInfo {
+  guint32 group_id;
+  guint32 flags;
+  guint32 max_h_tiles;
+  guint32 max_v_tiles;
+  guint32 loc_h_tile;
+  guint32 loc_v_tile;
+  guint32 tile_w;
+  guint32 tile_h;
+};
+
 struct _MetaOutput
 {
  /* The CRTC driving this output, NULL if the output is not enabled */
@@ -132,6 +144,8 @@ struct _MetaOutput
  */
  gboolean is_primary;
  gboolean is_presentation;
+  gboolean is_underscanning;
+  gboolean supports_underscanning;

  gpointer driver_private;
  GDestroyNotify driver_notify;
@@ -140,6 +154,8 @@ struct _MetaOutput
  gboolean hotplug_mode_update;
  gint suggested_x;
  gint suggested_y;
+
+  MetaTileInfo tile_info;
 };

 struct _MetaCRTC
@@ -158,7 +174,11 @@ struct _MetaCRTC
  /* Used when changing configuration */
  gboolean is_dirty;

-  MetaCursorReference *cursor;
+  /* Used by cursor renderer backend */
+  void *cursor_renderer_private;
+
+  gpointer driver_private;
+  GDestroyNotify driver_notify;
 };

 struct _MetaMonitorMode
@@ -175,6 +195,7 @@ struct _MetaMonitorMode
  GDestroyNotify driver_notify;
 };

+#define META_MAX_OUTPUTS_PER_MONITOR 4
 /**
 * MetaMonitorInfo:
 *
@@ -190,9 +211,14 @@ struct _MetaMonitorInfo
  int number;
  int xinerama_index;
  MetaRectangle rect;
+  /* for tiled monitors these are calculated, from untiled just copied */
+  float refresh_rate;
+  int width_mm;
+  int height_mm;
  gboolean is_primary;
  gboolean is_presentation; /* XXX: not yet used */
  gboolean in_fullscreen;
+  int scale;

  /* The primary or first output for this monitor, 0 if we can't figure out.
     It can be matched to a winsys_id of a MetaOutput.
@@ -203,6 +229,12 @@ struct _MetaMonitorInfo
     the primary one).
  */
  glong winsys_id;
+
+  guint32 tile_group_id;
+
+  int monitor_winsys_xid;
+  int n_outputs;
+  MetaOutput *outputs[META_MAX_OUTPUTS_PER_MONITOR];
 };

 /*
@@ -230,6 +262,7 @@ struct _MetaOutputInfo {
  MetaOutput  *output;
  gboolean     is_primary;
  gboolean     is_presentation;
+  gboolean     is_underscanning;
 };

 #define META_TYPE_MONITOR_MANAGER            (meta_monitor_manager_get_type ())
@@ -319,6 +352,13 @@ struct _MetaMonitorManagerClass
                          unsigned short     *,
                          unsigned short     *,
                          unsigned short     *);
+
+  void (*add_monitor) (MetaMonitorManager *,
+                       MetaMonitorInfo *);
+
+  void (*delete_monitor) (MetaMonitorManager *,
+                          int monitor_winsys_xid);
+
 };

 void                meta_monitor_manager_rebuild_derived   (MetaMonitorManager *manager);
@@ -374,6 +414,10 @@ gint               meta_monitor_manager_get_monitor_at_point (MetaMonitorManager
                                                              gfloat              x,
                                                              gfloat              y);

+void meta_monitor_manager_clear_output (MetaOutput *output);
+void meta_monitor_manager_clear_mode (MetaMonitorMode *mode);
+void meta_monitor_manager_clear_crtc (MetaCRTC *crtc);
+
 /* Returns true if transform causes width and height to be inverted
   This is true for the odd transforms in the enum */
 static inline gboolean
--- a/src/backends/meta-monitor-manager.c
+++ b/src/backends/meta-monitor-manager.c
@@ -71,6 +71,98 @@ meta_monitor_manager_init (MetaMonitorManager *manager)
 {
 }

+/*
+ * rules for constructing a tiled monitor
+ * 1. find a tile_group_id
+ * 2. iterate over all outputs for that tile group id
+ * 3. see if output has a crtc and if it is configured for the tile size
+ * 4. calculate the total tile size
+ * 5. set tile finished size
+ * 6. check for more tile_group_id
+*/
+static void
+construct_tile_monitor (MetaMonitorManager *manager,
+                        GArray *monitor_infos,
+                        guint32 tile_group_id)
+{
+  MetaMonitorInfo info;
+  unsigned i;
+
+  for (i = 0; i < monitor_infos->len; i++)
+    {
+      MetaMonitorInfo *pinfo = &g_array_index (monitor_infos, MetaMonitorInfo, i);
+
+      if (pinfo->tile_group_id == tile_group_id)
+        return;
+    }
+
+  /* didn't find it */
+  info.number = monitor_infos->len;
+  info.tile_group_id = tile_group_id;
+  info.is_presentation = FALSE;
+  info.refresh_rate = 0.0;
+  info.width_mm = 0;
+  info.height_mm = 0;
+  info.is_primary = FALSE;
+  info.rect.x = INT_MAX;
+  info.rect.y = INT_MAX;
+  info.rect.width = 0;
+  info.rect.height = 0;
+  info.winsys_id = 0;
+  info.n_outputs = 0;
+  info.monitor_winsys_xid = 0;
+
+  for (i = 0; i < manager->n_outputs; i++)
+    {
+      MetaOutput *output = &manager->outputs[i];
+
+      if (!output->tile_info.group_id)
+        continue;
+
+      if (output->tile_info.group_id != tile_group_id)
+        continue;
+
+      if (!output->crtc)
+        continue;
+
+      if (output->crtc->rect.width != (int)output->tile_info.tile_w ||
+          output->crtc->rect.height != (int)output->tile_info.tile_h)
+        continue;
+
+      if (output->tile_info.loc_h_tile == 0 && output->tile_info.loc_v_tile == 0)
+        {
+          info.refresh_rate = output->crtc->current_mode->refresh_rate;
+          info.width_mm = output->width_mm;
+          info.height_mm = output->height_mm;
+          info.winsys_id = output->winsys_id;
+        }
+
+      /* hack */
+      if (output->crtc->rect.x < info.rect.x)
+        info.rect.x = output->crtc->rect.x;
+      if (output->crtc->rect.y < info.rect.y)
+        info.rect.y = output->crtc->rect.y;
+
+      if (output->tile_info.loc_h_tile == 0)
+        info.rect.height += output->tile_info.tile_h;
+
+      if (output->tile_info.loc_v_tile == 0)
+        info.rect.width += output->tile_info.tile_w;
+
+      if (info.n_outputs > META_MAX_OUTPUTS_PER_MONITOR)
+        continue;
+
+      info.outputs[info.n_outputs++] = output;
+    }
+
+  /* if we don't have a winsys id, i.e. we haven't found tile 0,0
+     don't try and add this to the monitor infos */
+  if (!info.winsys_id)
+    return;
+
+  g_array_append_val (monitor_infos, info);
+}
+
 /*
 * make_logical_config:
 *
@@ -81,16 +173,26 @@ meta_monitor_manager_init (MetaMonitorManager *manager)
 static void
 make_logical_config (MetaMonitorManager *manager)
 {
+  MetaMonitorManagerClass *manager_class = META_MONITOR_MANAGER_GET_CLASS (manager);
  GArray *monitor_infos;
  unsigned int i, j;

  monitor_infos = g_array_sized_new (FALSE, TRUE, sizeof (MetaMonitorInfo),
-                                     manager->n_outputs);
+                                     manager->n_crtcs);

  /* Walk the list of MetaCRTCs, and build a MetaMonitorInfo
     for each of them, unless they reference a rectangle that
     is already there.
  */
+  /* for tiling we need to work out how many tiled outputs there are */
+  for (i = 0; i < manager->n_outputs; i++)
+    {
+      MetaOutput *output = &manager->outputs[i];
+
+      if (output->tile_info.group_id)
+        construct_tile_monitor (manager, monitor_infos, output->tile_info.group_id);
+    }
+
  for (i = 0; i < manager->n_crtcs; i++)
    {
      MetaCRTC *crtc = &manager->crtcs[i];
@@ -102,8 +204,8 @@ make_logical_config (MetaMonitorManager *manager)
      for (j = 0; j < monitor_infos->len; j++)
        {
          MetaMonitorInfo *info = &g_array_index (monitor_infos, MetaMonitorInfo, j);
-          if (meta_rectangle_equal (&crtc->rect,
-                                    &info->rect))
+          if (meta_rectangle_contains_rect (&info->rect,
+                                            &crtc->rect))
            {
              crtc->logical_monitor = info;
              break;
@@ -115,7 +217,10 @@ make_logical_config (MetaMonitorManager *manager)
          MetaMonitorInfo info;

          info.number = monitor_infos->len;
+          info.tile_group_id = 0;
          info.rect = crtc->rect;
+          info.refresh_rate = crtc->current_mode->refresh_rate;
+          info.scale = 1;
          info.is_primary = FALSE;
          /* This starts true because we want
             is_presentation only if all outputs are
@@ -125,7 +230,8 @@ make_logical_config (MetaMonitorManager *manager)
          info.is_presentation = TRUE;
          info.in_fullscreen = -1;
          info.winsys_id = 0;
-
+          info.n_outputs = 0;
+          info.monitor_winsys_xid = 0;
          g_array_append_val (monitor_infos, info);

          crtc->logical_monitor = &g_array_index (monitor_infos, MetaMonitorInfo,
@@ -147,6 +253,9 @@ make_logical_config (MetaMonitorManager *manager)
      if (output->crtc == NULL)
        continue;

+      if (output->tile_info.group_id)
+        continue;
+
      /* We must have a logical monitor on every CRTC at this point */
      g_assert (output->crtc->logical_monitor != NULL);

@@ -155,8 +264,17 @@ make_logical_config (MetaMonitorManager *manager)
      info->is_primary = info->is_primary || output->is_primary;
      info->is_presentation = info->is_presentation && output->is_presentation;

+      info->width_mm = output->width_mm;
+      info->height_mm = output->height_mm;
+
+      info->outputs[0] = output;
+      info->n_outputs = 1;
+
      if (output->is_primary || info->winsys_id == 0)
-        info->winsys_id = output->winsys_id;
+        {
+          info->scale = output->scale;
+          info->winsys_id = output->winsys_id;
+        }

      if (info->is_primary)
        manager->primary_monitor_index = info->number;
@@ -164,6 +282,10 @@ make_logical_config (MetaMonitorManager *manager)

  manager->n_monitor_infos = monitor_infos->len;
  manager->monitor_infos = (void*)g_array_free (monitor_infos, FALSE);
+
+  if (manager_class->add_monitor)
+    for (i = 0; i < manager->n_monitor_infos; i++)
+      manager_class->add_monitor (manager, &manager->monitor_infos[i]);
 }

 static void
@@ -224,6 +346,23 @@ meta_monitor_manager_constructed (GObject *object)
  manager->in_init = FALSE;
 }

+void
+meta_monitor_manager_clear_output (MetaOutput *output)
+{
+  g_free (output->name);
+  g_free (output->vendor);
+  g_free (output->product);
+  g_free (output->serial);
+  g_free (output->modes);
+  g_free (output->possible_crtcs);
+  g_free (output->possible_clones);
+
+  if (output->driver_notify)
+    output->driver_notify (output);
+
+  memset (output, 0, sizeof (*output));
+}
+
 static void
 meta_monitor_manager_free_output_array (MetaOutput *old_outputs,
                                        int         n_old_outputs)
@@ -231,22 +370,22 @@ meta_monitor_manager_free_output_array (MetaOutput *old_outputs,
  int i;

  for (i = 0; i < n_old_outputs; i++)
-    {
-      g_free (old_outputs[i].name);
-      g_free (old_outputs[i].vendor);
-      g_free (old_outputs[i].product);
-      g_free (old_outputs[i].serial);
-      g_free (old_outputs[i].modes);
-      g_free (old_outputs[i].possible_crtcs);
-      g_free (old_outputs[i].possible_clones);
-
-      if (old_outputs[i].driver_notify)
-        old_outputs[i].driver_notify (&old_outputs[i]);
-    }
+    meta_monitor_manager_clear_output (&old_outputs[i]);

  g_free (old_outputs);
 }

+void
+meta_monitor_manager_clear_mode (MetaMonitorMode *mode)
+{
+  g_free (mode->name);
+
+  if (mode->driver_notify)
+    mode->driver_notify (mode);
+
+  memset (mode, 0, sizeof (*mode));
+}
+
 static void
 meta_monitor_manager_free_mode_array (MetaMonitorMode *old_modes,
                                      int              n_old_modes)
@@ -254,16 +393,32 @@ meta_monitor_manager_free_mode_array (MetaMonitorMode *old_modes,
  int i;

  for (i = 0; i < n_old_modes; i++)
-    {
-      g_free (old_modes[i].name);
-
-      if (old_modes[i].driver_notify)
-        old_modes[i].driver_notify (&old_modes[i]);
-    }
+    meta_monitor_manager_clear_mode (&old_modes[i]);

  g_free (old_modes);
 }

+void
+meta_monitor_manager_clear_crtc (MetaCRTC *crtc)
+{
+  if (crtc->driver_notify)
+    crtc->driver_notify (crtc);
+
+  memset (crtc, 0, sizeof (*crtc));
+}
+
+static void
+meta_monitor_manager_free_crtc_array (MetaCRTC *old_crtcs,
+                                      int       n_old_crtcs)
+{
+  int i;
+
+  for (i = 0; i < n_old_crtcs; i++)
+    meta_monitor_manager_clear_crtc (&old_crtcs[i]);
+
+  g_free (old_crtcs);
+}
+
 static void
 meta_monitor_manager_finalize (GObject *object)
 {
@@ -271,8 +426,8 @@ meta_monitor_manager_finalize (GObject *object)

  meta_monitor_manager_free_output_array (manager->outputs, manager->n_outputs);
  meta_monitor_manager_free_mode_array (manager->modes, manager->n_modes);
+  meta_monitor_manager_free_crtc_array (manager->crtcs, manager->n_crtcs);
  g_free (manager->monitor_infos);
-  g_free (manager->crtcs);

  G_OBJECT_CLASS (meta_monitor_manager_parent_class)->finalize (object);
 }
@@ -353,16 +508,14 @@ static char *
 make_display_name (MetaMonitorManager *manager,
                   MetaOutput         *output)
 {
-  char *inches = NULL;
-  char *vendor_name = NULL;
-  char *ret;
+  g_autofree char *inches = NULL;
+  g_autofree char *vendor_name = NULL;

  switch (output->connector_type)
    {
    case META_CONNECTOR_TYPE_LVDS:
    case META_CONNECTOR_TYPE_eDP:
-      ret = g_strdup (_("Built-in display"));
-      goto out;
+      return g_strdup (_("Built-in display"));
    default:
      break;
    }
@@ -398,18 +551,12 @@ make_display_name (MetaMonitorManager *manager,
      /* TRANSLATORS: this is a monitor vendor name, followed by a
       * size in inches, like 'Dell 15"'
       */
-      ret = g_strdup_printf (_("%s %s"), vendor_name, inches);
+      return g_strdup_printf (_("%s %s"), vendor_name, inches);
    }
  else
    {
-      ret = g_strdup (vendor_name);
+      return g_strdup (vendor_name);
    }
-
- out:
-  g_free (inches);
-  g_free (vendor_name);
-
-  return ret;
 }

 static const char *
@@ -520,6 +667,10 @@ meta_monitor_manager_handle_get_resources (MetaDBusDisplayConfig *skeleton,
                             g_variant_new_boolean (output->is_presentation));
      g_variant_builder_add (&properties, "{sv}", "connector-type",
                             g_variant_new_string (get_connector_type_name (output->connector_type)));
+      g_variant_builder_add (&properties, "{sv}", "underscanning",
+                             g_variant_new_boolean (output->is_underscanning));
+      g_variant_builder_add (&properties, "{sv}", "supports-underscanning",
+                             g_variant_new_boolean (output->supports_underscanning));

      edid_file = manager_class->get_edid_file (manager, output);
      if (edid_file)
@@ -540,6 +691,20 @@ meta_monitor_manager_handle_get_resources (MetaDBusDisplayConfig *skeleton,
            }
        }

+      if (output->tile_info.group_id)
+        {
+          g_variant_builder_add (&properties, "{sv}", "tile",
+                                 g_variant_new ("(uuuuuuuu)",
+                                                output->tile_info.group_id,
+                                                output->tile_info.flags,
+                                                output->tile_info.max_h_tiles,
+                                                output->tile_info.max_v_tiles,
+                                                output->tile_info.loc_h_tile,
+                                                output->tile_info.loc_v_tile,
+                                                output->tile_info.tile_w,
+                                                output->tile_info.tile_h));
+        }
+
      g_variant_builder_add (&output_builder, "(uxiausauaua{sv})",
                             i, /* ID */
                             (gint64)output->winsys_id,
@@ -737,8 +902,7 @@ meta_monitor_manager_handle_apply_configuration  (MetaDBusDisplayConfig *skeleto
          crtc_info->y = 0;
        }

-      if (transform < META_MONITOR_TRANSFORM_NORMAL ||
-          transform > META_MONITOR_TRANSFORM_FLIPPED_270 ||
+      if (transform > META_MONITOR_TRANSFORM_FLIPPED_270 ||
          ((crtc->all_transforms & (1 << transform)) == 0))
        {
          g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
@@ -808,7 +972,7 @@ meta_monitor_manager_handle_apply_configuration  (MetaDBusDisplayConfig *skeleto
  while (g_variant_iter_loop (&output_iter, "(u@a{sv})", &output_index, &properties))
    {
      MetaOutputInfo *output_info;
-      gboolean primary, presentation;
+      gboolean primary, presentation, underscanning;

      if (output_index >= manager->n_outputs)
        {
@@ -827,6 +991,9 @@ meta_monitor_manager_handle_apply_configuration  (MetaDBusDisplayConfig *skeleto
      if (g_variant_lookup (properties, "presentation", "b", &presentation))
        output_info->is_presentation = presentation;

+      if (g_variant_lookup (properties, "underscanning", "b", &underscanning))
+        output_info->is_underscanning = underscanning;
+
      g_ptr_array_add (output_infos, output_info);
    }

@@ -1194,37 +1361,58 @@ meta_monitor_manager_read_current_config (MetaMonitorManager *manager)
  MetaOutput *old_outputs;
  MetaCRTC *old_crtcs;
  MetaMonitorMode *old_modes;
-  unsigned int n_old_outputs, n_old_modes;
+  unsigned int n_old_outputs, n_old_crtcs, n_old_modes;

  /* Some implementations of read_current use the existing information
   * we have available, so don't free the old configuration until after
   * read_current finishes. */
  old_outputs = manager->outputs;
  n_old_outputs = manager->n_outputs;
+  old_crtcs = manager->crtcs;
+  n_old_crtcs = manager->n_crtcs;
  old_modes = manager->modes;
  n_old_modes = manager->n_modes;
-  old_crtcs = manager->crtcs;

  manager->serial++;
  META_MONITOR_MANAGER_GET_CLASS (manager)->read_current (manager);

  meta_monitor_manager_free_output_array (old_outputs, n_old_outputs);
  meta_monitor_manager_free_mode_array (old_modes, n_old_modes);
-  g_free (old_crtcs);
+  meta_monitor_manager_free_crtc_array (old_crtcs, n_old_crtcs);
 }

 void
 meta_monitor_manager_rebuild_derived (MetaMonitorManager *manager)
 {
+  MetaMonitorManagerClass *manager_class = META_MONITOR_MANAGER_GET_CLASS (manager);
  MetaMonitorInfo *old_monitor_infos;
-
+  unsigned old_n_monitor_infos;
+  unsigned i, j;
  old_monitor_infos = manager->monitor_infos;
+  old_n_monitor_infos = manager->n_monitor_infos;

  if (manager->in_init)
    return;

  make_logical_config (manager);

+  if (manager_class->delete_monitor)
+    {
+      for (i = 0; i < old_n_monitor_infos; i++)
+        {
+          gboolean delete_mon = TRUE;
+          for (j = 0; j < manager->n_monitor_infos; j++)
+            {
+              if (manager->monitor_infos[j].monitor_winsys_xid == old_monitor_infos[i].monitor_winsys_xid)
+                {
+                  delete_mon = FALSE;
+                  break;
+                }
+            }
+          if (delete_mon)
+            manager_class->delete_monitor (manager, old_monitor_infos[i].monitor_winsys_xid);
+        }
+    }
  g_signal_emit_by_name (manager, "monitors-changed");

  g_free (old_monitor_infos);
@@ -1245,25 +1433,35 @@ meta_output_parse_edid (MetaOutput *meta_output,
  if (parsed_edid)
    {
      meta_output->vendor = g_strndup (parsed_edid->manufacturer_code, 4);
-      if (parsed_edid->dsc_product_name[0])
-        meta_output->product = g_strndup (parsed_edid->dsc_product_name, 14);
-      else
-        meta_output->product = g_strdup_printf ("0x%04x", (unsigned) parsed_edid->product_code);
-      if (parsed_edid->dsc_serial_number[0])
-        meta_output->serial = g_strndup (parsed_edid->dsc_serial_number, 14);
-      else
-        meta_output->serial = g_strdup_printf ("0x%08x", parsed_edid->serial_number);
+      if (!g_utf8_validate (meta_output->vendor, -1, NULL))
+        g_clear_pointer (&meta_output->vendor, g_free);
+
+      meta_output->product = g_strndup (parsed_edid->dsc_product_name, 14);
+      if (!g_utf8_validate (meta_output->product, -1, NULL) ||
+          meta_output->product[0] == '\0')
+        {
+          g_clear_pointer (&meta_output->product, g_free);
+          meta_output->product = g_strdup_printf ("0x%04x", (unsigned) parsed_edid->product_code);
+        }
+
+      meta_output->serial = g_strndup (parsed_edid->dsc_serial_number, 14);
+      if (!g_utf8_validate (meta_output->serial, -1, NULL) ||
+          meta_output->serial[0] == '\0')
+        {
+          g_clear_pointer (&meta_output->serial, g_free);
+          meta_output->serial = g_strdup_printf ("0x%08x", parsed_edid->serial_number);
+        }

      g_free (parsed_edid);
    }

 out:
  if (!meta_output->vendor)
-    {
-      meta_output->vendor = g_strdup ("unknown");
-      meta_output->product = g_strdup ("unknown");
-      meta_output->serial = g_strdup ("unknown");
-    }
+    meta_output->vendor = g_strdup ("unknown");
+  if (!meta_output->product)
+    meta_output->product = g_strdup ("unknown");
+  if (!meta_output->serial)
+    meta_output->serial = g_strdup ("unknown");
 }

 void
--- a/src/backends/meta-pointer-constraint.c
+++ b/src/backends/meta-pointer-constraint.c
@@ -0,0 +1,57 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#include "config.h"
+
+#include "backends/meta-pointer-constraint.h"
+
+#include <glib-object.h>
+
+G_DEFINE_TYPE (MetaPointerConstraint, meta_pointer_constraint, G_TYPE_OBJECT);
+
+static void
+meta_pointer_constraint_init (MetaPointerConstraint *constraint)
+{
+}
+
+static void
+meta_pointer_constraint_class_init (MetaPointerConstraintClass *klass)
+{
+}
+
+void
+meta_pointer_constraint_constrain (MetaPointerConstraint *constraint,
+                                   ClutterInputDevice    *device,
+                                   guint32                time,
+                                   float                  prev_x,
+                                   float                  prev_y,
+                                   float                  *x,
+                                   float                  *y)
+{
+  META_POINTER_CONSTRAINT_GET_CLASS (constraint)->constrain (constraint,
+                                                             device,
+                                                             time,
+                                                             prev_x, prev_y,
+                                                             x, y);
+}
--- a/src/backends/meta-pointer-constraint.h
+++ b/src/backends/meta-pointer-constraint.h
@@ -0,0 +1,60 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#ifndef META_POINTER_CONSTRAINT_H
+#define META_POINTER_CONSTRAINT_H
+
+#include <glib-object.h>
+#include <clutter/clutter.h>
+
+G_BEGIN_DECLS
+
+#define META_TYPE_POINTER_CONSTRAINT (meta_pointer_constraint_get_type ())
+G_DECLARE_DERIVABLE_TYPE (MetaPointerConstraint, meta_pointer_constraint,
+                          META, POINTER_CONSTRAINT, GObject);
+
+struct _MetaPointerConstraintClass
+{
+  GObjectClass parent_class;
+
+  void (*constrain) (MetaPointerConstraint *constraint,
+                     ClutterInputDevice *device,
+                     guint32 time,
+                     float prev_x,
+                     float prev_y,
+                     float *x,
+                     float *y);
+};
+
+void meta_pointer_constraint_constrain (MetaPointerConstraint *constraint,
+                                        ClutterInputDevice    *device,
+                                        guint32                time,
+                                        float                  prev_x,
+                                        float                  prev_y,
+                                        float                 *x,
+                                        float                 *y);
+
+G_END_DECLS
+
+#endif /* META_POINTER_CONSTRAINT_H */
--- a/src/backends/meta-stage.c
+++ b/src/backends/meta-stage.c
@@ -24,7 +24,6 @@

 #include "meta-stage.h"

-#include "meta-cursor-private.h"
 #include <meta/meta-backend.h>
 #include <meta/util.h>

--- a/src/backends/native/meta-backend-native.c
+++ b/src/backends/native/meta-backend-native.c
@@ -29,20 +29,26 @@

 #include <meta/main.h>
 #include <clutter/evdev/clutter-evdev.h>
+#include <libupower-glib/upower.h>

 #include "meta-barrier-native.h"
 #include "meta-idle-monitor-native.h"
 #include "meta-monitor-manager-kms.h"
 #include "meta-cursor-renderer-native.h"
 #include "meta-launcher.h"
+#include "backends/meta-cursor-tracker-private.h"
+#include "backends/meta-pointer-constraint.h"
+
+#include <stdlib.h>

 struct _MetaBackendNativePrivate
 {
  MetaLauncher *launcher;
-
  MetaBarrierManagerNative *barrier_manager;
-
-  GSettings *keyboard_settings;
+  UpClient *up_client;
+  guint sleep_signal_id;
+  GCancellable *cancellable;
+  GDBusConnection *system_bus;
 };
 typedef struct _MetaBackendNativePrivate MetaBackendNativePrivate;

@@ -56,9 +62,69 @@ meta_backend_native_finalize (GObject *object)

  meta_launcher_free (priv->launcher);

+  g_object_unref (priv->up_client);
+  if (priv->sleep_signal_id)
+    g_dbus_connection_signal_unsubscribe (priv->system_bus, priv->sleep_signal_id);
+  g_cancellable_cancel (priv->cancellable);
+  g_clear_object (&priv->cancellable);
+  g_clear_object (&priv->system_bus);
+
  G_OBJECT_CLASS (meta_backend_native_parent_class)->finalize (object);
 }

+static void
+prepare_for_sleep_cb (GDBusConnection *connection,
+                      const gchar     *sender_name,
+                      const gchar     *object_path,
+                      const gchar     *interface_name,
+                      const gchar     *signal_name,
+                      GVariant        *parameters,
+                      gpointer         user_data)
+{
+  gboolean suspending;
+  g_variant_get (parameters, "(b)", &suspending);
+  if (suspending)
+    return;
+  meta_idle_monitor_native_reset_idletime (meta_idle_monitor_get_core ());
+}
+
+static void
+system_bus_gotten_cb (GObject      *object,
+                      GAsyncResult *res,
+                      gpointer      user_data)
+{
+  MetaBackendNativePrivate *priv;
+  GDBusConnection *bus;
+
+  bus = g_bus_get_finish (res, NULL);
+  if (!bus)
+    return;
+
+  priv = meta_backend_native_get_instance_private (META_BACKEND_NATIVE (user_data));
+  priv->system_bus = bus;
+  priv->sleep_signal_id = g_dbus_connection_signal_subscribe (priv->system_bus,
+                                                              "org.freedesktop.login1",
+                                                              "org.freedesktop.login1.Manager",
+                                                              "PrepareForSleep",
+                                                              "/org/freedesktop/login1",
+                                                              NULL,
+                                                              G_DBUS_SIGNAL_FLAGS_NONE,
+                                                              prepare_for_sleep_cb,
+                                                              NULL,
+                                                              NULL);
+}
+
+static void
+lid_is_closed_changed_cb (UpClient   *client,
+                          GParamSpec *pspec,
+                          gpointer    user_data)
+{
+  if (up_client_get_lid_is_closed (client))
+    return;
+
+  meta_idle_monitor_native_reset_idletime (meta_idle_monitor_get_core ());
+}
+
 static void
 constrain_to_barriers (ClutterInputDevice *device,
                       guint32             time,
@@ -75,6 +141,24 @@ constrain_to_barriers (ClutterInputDevice *device,
                                       new_x, new_y);
 }

+static void
+constrain_to_client_constraint (ClutterInputDevice *device,
+                                guint32             time,
+                                float               prev_x,
+                                float               prev_y,
+                                float              *x,
+                                float              *y)
+{
+  MetaBackend *backend = meta_get_backend ();
+  MetaPointerConstraint *constraint = backend->client_pointer_constraint;
+
+  if (!constraint)
+    return;
+
+  meta_pointer_constraint_constrain (constraint, device,
+                                     time, prev_x, prev_y, x, y);
+}
+
 /*
 * The pointer constrain code is mostly a rip-off of the XRandR code from Xorg.
 * (from xserver/randr/rrcrtc.c, RRConstrainCursorHarder)
@@ -129,10 +213,12 @@ constrain_all_screen_monitors (ClutterInputDevice *device,

 static void
 pointer_constrain_callback (ClutterInputDevice *device,
-			    guint32             time,
-			    float              *new_x,
-			    float              *new_y,
-			    gpointer            user_data)
+                            guint32             time,
+                            float               prev_x,
+                            float               prev_y,
+                            float              *new_x,
+                            float              *new_y,
+                            gpointer            user_data)
 {
  MetaMonitorManager *monitor_manager;
  MetaMonitorInfo *monitors;
@@ -141,6 +227,9 @@ pointer_constrain_callback (ClutterInputDevice *device,
  /* Constrain to barriers */
  constrain_to_barriers (device, time, new_x, new_y);

+  /* Constrain to pointer lock */
+  constrain_to_client_constraint (device, time, prev_x, prev_y, new_x, new_y);
+
  monitor_manager = meta_monitor_manager_get ();
  monitors = meta_monitor_manager_get_monitor_infos (monitor_manager, &n_monitors);

@@ -191,11 +280,16 @@ meta_backend_native_warp_pointer (MetaBackend *backend,
 {
  ClutterDeviceManager *manager = clutter_device_manager_get_default ();
  ClutterInputDevice *device = clutter_device_manager_get_core_device (manager, CLUTTER_POINTER_DEVICE);
+  MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (NULL);

  /* XXX */
  guint32 time_ = 0;

+  /* Warp the input device pointer state. */
  clutter_evdev_warp_pointer (device, time_, x, y);
+
+  /* Warp displayed pointer cursor. */
+  meta_cursor_tracker_update_position (tracker, x, y);
 }

 static void
@@ -242,6 +336,19 @@ meta_backend_native_lock_layout_group (MetaBackend *backend,
  g_signal_emit_by_name (backend, "keymap-layout-group-changed", idx, 0);
 }

+static gboolean
+meta_backend_native_get_relative_motion_deltas (MetaBackend *backend,
+                                                const        ClutterEvent *event,
+                                                double       *dx,
+                                                double       *dy,
+                                                double       *dx_unaccel,
+                                                double       *dy_unaccel)
+{
+  return clutter_evdev_event_get_relative_motion (event,
+                                                  dx, dy,
+                                                  dx_unaccel, dy_unaccel);
+}
+
 static void
 meta_backend_native_class_init (MetaBackendNativeClass *klass)
 {
@@ -259,17 +366,33 @@ meta_backend_native_class_init (MetaBackendNativeClass *klass)
  backend_class->set_keymap = meta_backend_native_set_keymap;
  backend_class->get_keymap = meta_backend_native_get_keymap;
  backend_class->lock_layout_group = meta_backend_native_lock_layout_group;
+  backend_class->get_relative_motion_deltas = meta_backend_native_get_relative_motion_deltas;
 }

 static void
 meta_backend_native_init (MetaBackendNative *native)
 {
  MetaBackendNativePrivate *priv = meta_backend_native_get_instance_private (native);
+  GError *error = NULL;

-  /* We're a display server, so start talking to weston-launch. */
-  priv->launcher = meta_launcher_new ();
+  priv->launcher = meta_launcher_new (&error);
+  if (priv->launcher == NULL)
+    {
+      g_warning ("Can't initialize KMS backend: %s\n", error->message);
+      exit (1);
+    }

  priv->barrier_manager = meta_barrier_manager_native_new ();
+
+  priv->up_client = up_client_new ();
+  g_signal_connect (priv->up_client, "notify::lid-is-closed",
+                    G_CALLBACK (lid_is_closed_changed_cb), NULL);
+
+  priv->cancellable = g_cancellable_new ();
+  g_bus_get (G_BUS_TYPE_SYSTEM,
+             priv->cancellable,
+             system_bus_gotten_cb,
+             native);
 }

 gboolean
--- a/src/backends/native/meta-barrier-native.c
+++ b/src/backends/native/meta-barrier-native.c
@@ -93,126 +93,18 @@ next_serial (void)
  return barrier_serial;
 }

-typedef struct _Vector2
-{
-  float x, y;
-} Vector2;
-
-static float
-vector2_cross_product (Vector2 a, Vector2 b)
-{
-  return a.x * b.y - a.y * b.x;
-}
-
-static Vector2
-vector2_add (Vector2 a, Vector2 b)
-{
-  return (Vector2) {
-    .x = a.x + b.x,
-    .y = a.y + b.y,
-  };
-}
-
-static Vector2
-vector2_subtract (Vector2 a, Vector2 b)
-{
-  return (Vector2) {
-    .x = a.x - b.x,
-    .y = a.y - b.y,
-  };
-}
-
-static Vector2
-vector2_multiply_constant (float c, Vector2 a)
-{
-  return (Vector2) {
-    .x = c * a.x,
-    .y = c * a.y,
-  };
-}
-
-typedef struct _Line2
-{
-  Vector2 a;
-  Vector2 b;
-} Line2;
-
-static gboolean
-lines_intersect (Line2 *line1, Line2 *line2, Vector2 *intersection)
-{
-  Vector2 p = line1->a;
-  Vector2 r = vector2_subtract (line1->b, line1->a);
-  Vector2 q = line2->a;
-  Vector2 s = vector2_subtract (line2->b, line2->a);
-  float rxs;
-  float sxr;
-  float t;
-  float u;
-
-  /*
-   * The line (p, r) and (q, s) intersects where
-   *
-   *   p + t r = q + u s
-   *
-   * Calculate t:
-   *
-   *   (p + t r) × s = (q + u s) × s
-   *   p × s + t (r × s) = q × s + u (s × s)
-   *   p × s + t (r × s) = q × s
-   *   t (r × s) = q × s - p × s
-   *   t (r × s) = (q - p) × s
-   *   t = ((q - p) × s) / (r × s)
-   *
-   * Using the same method, for u we get:
-   *
-   *   u = ((p - q) × r) / (s × r)
-   */
-
-  rxs = vector2_cross_product (r, s);
-  sxr = vector2_cross_product (s, r);
-
-  /* If r × s = 0 then the lines are either parallel or collinear. */
-  if (fabs ( rxs) < DBL_MIN)
-    return FALSE;
-
-  t = vector2_cross_product (vector2_subtract (q, p), s) / rxs;
-  u = vector2_cross_product (vector2_subtract (p, q), r) / sxr;
-
-
-  /* The lines only intersect if 0 ≤ t ≤ 1 and 0 ≤ u ≤ 1. */
-  if (t < 0.0 || t > 1.0 || u < 0.0 || u > 1.0)
-    return FALSE;
-
-  *intersection = vector2_add (p, vector2_multiply_constant (t, r));
-
-  return TRUE;
-}
-
 static gboolean
 is_barrier_horizontal (MetaBarrier *barrier)
 {
-  return barrier->priv->y1 == barrier->priv->y2;
+  return meta_border_is_horizontal (&barrier->priv->border);
 }

 static gboolean
 is_barrier_blocking_directions (MetaBarrier         *barrier,
                                MetaBarrierDirection directions)
 {
-  /* Barriers doesn't block parallel motions. */
-  if (is_barrier_horizontal (barrier))
-    {
-      if ((directions & (META_BARRIER_DIRECTION_POSITIVE_Y |
-                         META_BARRIER_DIRECTION_NEGATIVE_Y)) == 0)
-        return FALSE;
-    }
-  else
-    {
-      if ((directions & (META_BARRIER_DIRECTION_POSITIVE_X |
-                         META_BARRIER_DIRECTION_NEGATIVE_X)) == 0)
-        return FALSE;
-    }
-
-  return (barrier->priv->directions & directions) != directions;
+  return meta_border_is_blocking_directions (&barrier->priv->border,
+                                             directions);
 }

 static void
@@ -224,31 +116,16 @@ dismiss_pointer (MetaBarrierImplNative *self)
  priv->state = META_BARRIER_STATE_LEFT;
 }

-static Line2
-barrier_to_line (MetaBarrier *barrier)
-{
-  return (Line2) {
-    .a = (Vector2) {
-      .x = MIN (barrier->priv->x1, barrier->priv->x2),
-      .y = MIN (barrier->priv->y1, barrier->priv->y2),
-    },
-    .b = (Vector2) {
-      .x = MAX (barrier->priv->x1, barrier->priv->x2),
-      .y = MAX (barrier->priv->y1, barrier->priv->y2),
-    },
-  };
-}
-
 /*
 * Calculate the hit box for a held motion. The hit box is a 2 px wide region
 * in the opposite direction of every direction the barrier blocks. The purpose
 * of this is to allow small movements without receiving a "left" signal. This
 * heuristic comes from the X.org pointer barrier implementation.
 */
-static Line2
+static MetaLine2
 calculate_barrier_hit_box (MetaBarrier *barrier)
 {
-  Line2 hit_box = barrier_to_line (barrier);
+  MetaLine2 hit_box = barrier->priv->border.line;

  if (is_barrier_horizontal (barrier))
    {
@@ -273,7 +150,8 @@ calculate_barrier_hit_box (MetaBarrier *barrier)
 }

 static gboolean
-is_within_box (Line2 box, Vector2 point)
+is_within_box (MetaLine2   box,
+               MetaVector2 point)
 {
  return (point.x >= box.a.x && point.x < box.b.x &&
          point.y >= box.a.y && point.y < box.b.y);
@@ -288,8 +166,8 @@ maybe_release_barrier (gpointer key,
  MetaBarrierImplNativePrivate *priv =
    meta_barrier_impl_native_get_instance_private (self);
  MetaBarrier *barrier = priv->barrier;
-  Line2 *motion = user_data;
-  Line2 hit_box;
+  MetaLine2 *motion = user_data;
+  MetaLine2 hit_box;

  if (priv->state != META_BARRIER_STATE_HELD)
    return;
@@ -297,8 +175,10 @@ maybe_release_barrier (gpointer key,
  /* Release if we end up outside barrier end points. */
  if (is_barrier_horizontal (barrier))
    {
-      if (motion->b.x > MAX (barrier->priv->x1, barrier->priv->x2) ||
-          motion->b.x < MIN (barrier->priv->x1, barrier->priv->x2))
+      if (motion->b.x > MAX (barrier->priv->border.line.a.x,
+                             barrier->priv->border.line.b.x) ||
+          motion->b.x < MIN (barrier->priv->border.line.a.x,
+                             barrier->priv->border.line.b.x))
        {
          dismiss_pointer (self);
          return;
@@ -306,8 +186,10 @@ maybe_release_barrier (gpointer key,
    }
  else
    {
-      if (motion->b.y > MAX (barrier->priv->y1, barrier->priv->y2) ||
-          motion->b.y < MIN (barrier->priv->y1, barrier->priv->y2))
+      if (motion->b.y > MAX (barrier->priv->border.line.a.y,
+                             barrier->priv->border.line.b.y) ||
+          motion->b.y < MIN (barrier->priv->border.line.a.y,
+                             barrier->priv->border.line.b.y))
        {
          dismiss_pointer (self);
          return;
@@ -330,7 +212,7 @@ maybe_release_barriers (MetaBarrierManagerNative *manager,
                        float                     x,
                        float                     y)
 {
-  Line2 motion = {
+  MetaLine2 motion = {
    .a = {
      .x = prev_x,
      .y = prev_y,
@@ -350,7 +232,7 @@ typedef struct _MetaClosestBarrierData
 {
  struct
  {
-    Line2                       motion;
+    MetaLine2                   motion;
    MetaBarrierDirection        directions;
  } in;

@@ -371,8 +253,7 @@ update_closest_barrier (gpointer key,
    meta_barrier_impl_native_get_instance_private (self);
  MetaBarrier *barrier = priv->barrier;
  MetaClosestBarrierData *data = user_data;
-  Line2 barrier_line;
-  Vector2 intersection;
+  MetaVector2 intersection;
  float dx, dy;
  float distance_2;

@@ -391,17 +272,9 @@ update_closest_barrier (gpointer key,

  /* Check if the motion intersects with the barrier, and retrieve the
   * intersection point if any. */
-  barrier_line = (Line2) {
-    .a = {
-      .x = barrier->priv->x1,
-      .y = barrier->priv->y1
-    },
-    .b = {
-      .x = barrier->priv->x2,
-      .y = barrier->priv->y2
-    },
-  };
-  if (!lines_intersect (&barrier_line, &data->in.motion, &intersection))
+  if (!meta_line2_intersects_with (&barrier->priv->border.line,
+                                   &data->in.motion,
+                                   &intersection))
    return;

  /* Calculate the distance to the barrier and keep track of the closest
@@ -570,9 +443,9 @@ clamp_to_barrier (MetaBarrierImplNative *self,
  if (is_barrier_horizontal (barrier))
    {
      if (*motion_dir & META_BARRIER_DIRECTION_POSITIVE_Y)
-        *y = barrier->priv->y1;
+        *y = barrier->priv->border.line.a.y;
      else if (*motion_dir & META_BARRIER_DIRECTION_NEGATIVE_Y)
-        *y = barrier->priv->y1;
+        *y = barrier->priv->border.line.a.y;

      priv->blocked_dir = *motion_dir & (META_BARRIER_DIRECTION_POSITIVE_Y |
                                         META_BARRIER_DIRECTION_NEGATIVE_Y);
@@ -582,9 +455,9 @@ clamp_to_barrier (MetaBarrierImplNative *self,
  else
    {
      if (*motion_dir & META_BARRIER_DIRECTION_POSITIVE_X)
-        *x = barrier->priv->x1;
+        *x = barrier->priv->border.line.a.x;
      else if (*motion_dir & META_BARRIER_DIRECTION_NEGATIVE_X)
-        *x = barrier->priv->x1;
+        *x = barrier->priv->border.line.a.x;

      priv->blocked_dir = *motion_dir & (META_BARRIER_DIRECTION_POSITIVE_X |
                                         META_BARRIER_DIRECTION_NEGATIVE_X);
--- a/src/backends/native/meta-cursor-renderer-native.c
+++ b/src/backends/native/meta-cursor-renderer-native.c
@@ -26,11 +26,16 @@

 #include "meta-cursor-renderer-native.h"

+#include <string.h>
 #include <gbm.h>
 #include <xf86drm.h>
+#include <errno.h>
+
+#include <meta/util.h>
+#include <meta/meta-backend.h>

-#include "meta-cursor-private.h"
 #include "meta-monitor-manager-private.h"
+#include "meta/boxes.h"

 #ifndef DRM_CAP_CURSOR_WIDTH
 #define DRM_CAP_CURSOR_WIDTH 0x8
@@ -39,10 +44,28 @@
 #define DRM_CAP_CURSOR_HEIGHT 0x9
 #endif

+/* When animating a cursor, we usually call drmModeSetCursor2 once per frame.
+ * Though, testing shows that we need to triple buffer the cursor buffer in
+ * order to avoid glitches when animating the cursor, at least when running on
+ * Intel. The reason for this might be (but is not confirmed to be) due to
+ * the user space gbm_bo cache, making us reuse and overwrite the kernel side
+ * buffer content before it was scanned out. To avoid this, we keep a user space
+ * reference to each buffer we set until at least one frame after it was drawn.
+ * In effect, this means we three active cursor gbm_bo's: one that that just has
+ * been set, one that was previously set and may or may not have been scanned
+ * out, and one pending that will be replaced if the cursor sprite changes.
+ */
+#define HW_CURSOR_BUFFER_COUNT 3
+
+static GQuark quark_cursor_sprite = 0;
+
 struct _MetaCursorRendererNativePrivate
 {
  gboolean has_hw_cursor;

+  MetaCursorSprite *last_cursor;
+  guint animation_timeout_id;
+
  int drm_fd;
  struct gbm_device *gbm;

@@ -51,77 +74,167 @@ struct _MetaCursorRendererNativePrivate
 };
 typedef struct _MetaCursorRendererNativePrivate MetaCursorRendererNativePrivate;

+typedef enum _MetaCursorGbmBoState
+{
+  META_CURSOR_GBM_BO_STATE_NONE,
+  META_CURSOR_GBM_BO_STATE_SET,
+  META_CURSOR_GBM_BO_STATE_INVALIDATED,
+} MetaCursorGbmBoState;
+
+typedef struct _MetaCursorNativePrivate
+{
+  guint active_bo;
+  MetaCursorGbmBoState pending_bo_state;
+  struct gbm_bo *bos[HW_CURSOR_BUFFER_COUNT];
+} MetaCursorNativePrivate;
+
 G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRendererNative, meta_cursor_renderer_native, META_TYPE_CURSOR_RENDERER);

+static MetaCursorNativePrivate *
+ensure_cursor_priv (MetaCursorSprite *cursor_sprite);
+
 static void
 meta_cursor_renderer_native_finalize (GObject *object)
 {
  MetaCursorRendererNative *renderer = META_CURSOR_RENDERER_NATIVE (object);
  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (renderer);

-  if (priv->gbm)
-    gbm_device_destroy (priv->gbm);
+  if (priv->animation_timeout_id)
+    g_source_remove (priv->animation_timeout_id);

  G_OBJECT_CLASS (meta_cursor_renderer_native_parent_class)->finalize (object);
 }

+static guint
+get_pending_cursor_sprite_gbm_bo_index (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+
+  return (cursor_priv->active_bo + 1) % HW_CURSOR_BUFFER_COUNT;
+}
+
+static struct gbm_bo *
+get_pending_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+  guint pending_bo;
+
+  if (!cursor_priv)
+    return NULL;
+
+  pending_bo = get_pending_cursor_sprite_gbm_bo_index (cursor_sprite);
+  return cursor_priv->bos[pending_bo];
+}
+
+static struct gbm_bo *
+get_active_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+
+  if (!cursor_priv)
+    return NULL;
+
+  return cursor_priv->bos[cursor_priv->active_bo];
+}
+
+static void
+set_pending_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite,
+                                  struct gbm_bo    *bo)
+{
+  MetaCursorNativePrivate *cursor_priv;
+  guint pending_bo;
+
+  cursor_priv = ensure_cursor_priv (cursor_sprite);
+
+  pending_bo = get_pending_cursor_sprite_gbm_bo_index (cursor_sprite);
+  cursor_priv->bos[pending_bo] = bo;
+  cursor_priv->pending_bo_state = META_CURSOR_GBM_BO_STATE_SET;
+}
+
 static void
 set_crtc_cursor (MetaCursorRendererNative *native,
                 MetaCRTC                 *crtc,
-                 MetaCursorReference      *cursor,
+                 MetaCursorSprite         *cursor_sprite,
                 gboolean                  force)
 {
  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);

-  if (crtc->cursor == cursor && !force)
-    return;
-
-  crtc->cursor = cursor;
-
-  if (cursor)
+  if (cursor_sprite)
    {
+      MetaCursorNativePrivate *cursor_priv =
+        g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
      struct gbm_bo *bo;
      union gbm_bo_handle handle;
      int hot_x, hot_y;

-      bo = meta_cursor_reference_get_gbm_bo (cursor, &hot_x, &hot_y);
+      if (cursor_priv->pending_bo_state == META_CURSOR_GBM_BO_STATE_SET)
+        bo = get_pending_cursor_sprite_gbm_bo (cursor_sprite);
+      else
+        bo = get_active_cursor_sprite_gbm_bo (cursor_sprite);
+
+      if (!force && bo == crtc->cursor_renderer_private)
+        return;
+
+      crtc->cursor_renderer_private = bo;

      handle = gbm_bo_get_handle (bo);
+      meta_cursor_sprite_get_hotspot (cursor_sprite, &hot_x, &hot_y);
+
      drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, handle.u32,
                         priv->cursor_width, priv->cursor_height, hot_x, hot_y);
+
+      if (cursor_priv->pending_bo_state == META_CURSOR_GBM_BO_STATE_SET)
+        {
+          cursor_priv->active_bo =
+            (cursor_priv->active_bo + 1) % HW_CURSOR_BUFFER_COUNT;
+          cursor_priv->pending_bo_state = META_CURSOR_GBM_BO_STATE_NONE;
+        }
    }
  else
    {
-      drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, 0, 0, 0, 0, 0);
+      if (force || crtc->cursor_renderer_private != NULL)
+        {
+          drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, 0, 0, 0, 0, 0);
+          crtc->cursor_renderer_private = NULL;
+        }
    }
 }

 static void
 update_hw_cursor (MetaCursorRendererNative *native,
+                  MetaCursorSprite         *cursor_sprite,
                  gboolean                  force)
 {
  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
  MetaCursorRenderer *renderer = META_CURSOR_RENDERER (native);
-  const MetaRectangle *cursor_rect = meta_cursor_renderer_get_rect (renderer);
-  MetaCursorReference *cursor = meta_cursor_renderer_get_cursor (renderer);
  MetaMonitorManager *monitors;
  MetaCRTC *crtcs;
  unsigned int i, n_crtcs;
+  MetaRectangle rect;

  monitors = meta_monitor_manager_get ();
  meta_monitor_manager_get_resources (monitors, NULL, NULL, &crtcs, &n_crtcs, NULL, NULL);

+  if (cursor_sprite)
+    rect = meta_cursor_renderer_calculate_rect (renderer, cursor_sprite);
+  else
+    rect = (MetaRectangle) { 0 };
+
  for (i = 0; i < n_crtcs; i++)
    {
-      gboolean crtc_should_have_cursor;
-      MetaCursorReference *crtc_cursor;
+      gboolean crtc_should_use_cursor;
+      MetaCursorSprite *crtc_cursor;
      MetaRectangle *crtc_rect;

      crtc_rect = &crtcs[i].rect;

-      crtc_should_have_cursor = (priv->has_hw_cursor && meta_rectangle_overlap (cursor_rect, crtc_rect));
-      if (crtc_should_have_cursor)
-        crtc_cursor = cursor;
+      crtc_should_use_cursor = (priv->has_hw_cursor &&
+                                meta_rectangle_overlap (&rect, crtc_rect));
+      if (crtc_should_use_cursor)
+        crtc_cursor = cursor_sprite;
      else
        crtc_cursor = NULL;

@@ -130,34 +243,382 @@ update_hw_cursor (MetaCursorRendererNative *native,
      if (crtc_cursor)
        {
          drmModeMoveCursor (priv->drm_fd, crtcs[i].crtc_id,
-                             cursor_rect->x - crtc_rect->x,
-                             cursor_rect->y - crtc_rect->y);
+                             rect.x - crtc_rect->x,
+                             rect.y - crtc_rect->y);
        }
    }
 }

 static gboolean
-should_have_hw_cursor (MetaCursorRenderer *renderer)
+has_valid_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite)
 {
-  MetaCursorReference *cursor = meta_cursor_renderer_get_cursor (renderer);
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);

-  if (cursor)
-    return (meta_cursor_reference_get_gbm_bo (cursor, NULL, NULL) != NULL);
-  else
+  if (!cursor_priv)
    return FALSE;
+
+  switch (cursor_priv->pending_bo_state)
+    {
+    case META_CURSOR_GBM_BO_STATE_NONE:
+      return get_active_cursor_sprite_gbm_bo (cursor_sprite) != NULL;
+    case META_CURSOR_GBM_BO_STATE_SET:
+      return TRUE;
+    case META_CURSOR_GBM_BO_STATE_INVALIDATED:
+      return FALSE;
+    }
+
+  g_assert_not_reached ();
+
+  return FALSE;
 }

 static gboolean
-meta_cursor_renderer_native_update_cursor (MetaCursorRenderer *renderer)
+cursor_over_transformed_crtc (MetaCursorRenderer *renderer,
+                              MetaCursorSprite   *cursor_sprite)
+{
+  MetaMonitorManager *monitors;
+  MetaCRTC *crtcs;
+  unsigned int i, n_crtcs;
+  MetaRectangle rect;
+
+  monitors = meta_monitor_manager_get ();
+  meta_monitor_manager_get_resources (monitors, NULL, NULL,
+                                      &crtcs, &n_crtcs, NULL, NULL);
+  rect = meta_cursor_renderer_calculate_rect (renderer, cursor_sprite);
+
+  for (i = 0; i < n_crtcs; i++)
+    {
+      if (!meta_rectangle_overlap (&rect, &crtcs[i].rect))
+        continue;
+
+      if (crtcs[i].transform != META_MONITOR_TRANSFORM_NORMAL)
+        return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+should_have_hw_cursor (MetaCursorRenderer *renderer,
+                       MetaCursorSprite   *cursor_sprite)
+{
+  CoglTexture *texture;
+
+  if (!cursor_sprite)
+    return FALSE;
+
+  if (cursor_over_transformed_crtc (renderer, cursor_sprite))
+    return FALSE;
+
+  texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
+  if (!texture)
+    return FALSE;
+
+  if (meta_cursor_sprite_get_texture_scale (cursor_sprite) != 1)
+    return FALSE;
+
+  if (!has_valid_cursor_sprite_gbm_bo (cursor_sprite))
+    return FALSE;
+
+  return TRUE;
+}
+
+static gboolean
+meta_cursor_renderer_native_update_animation (MetaCursorRendererNative *native)
+{
+  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
+  MetaCursorRenderer *renderer = META_CURSOR_RENDERER (native);
+  MetaCursorSprite *cursor_sprite = meta_cursor_renderer_get_cursor (renderer);
+
+  priv->animation_timeout_id = 0;
+  meta_cursor_sprite_tick_frame (cursor_sprite);
+  meta_cursor_renderer_force_update (renderer);
+
+  return G_SOURCE_REMOVE;
+}
+
+static void
+meta_cursor_renderer_native_trigger_frame (MetaCursorRendererNative *native,
+                                           MetaCursorSprite         *cursor_sprite)
+{
+  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
+  gboolean cursor_change;
+  guint delay;
+
+  cursor_change = cursor_sprite != priv->last_cursor;
+  priv->last_cursor = cursor_sprite;
+
+  if (!cursor_change && priv->animation_timeout_id)
+    return;
+
+  if (priv->animation_timeout_id)
+    {
+      g_source_remove (priv->animation_timeout_id);
+      priv->animation_timeout_id = 0;
+    }
+
+  if (cursor_sprite && meta_cursor_sprite_is_animated (cursor_sprite))
+    {
+      delay = meta_cursor_sprite_get_current_frame_time (cursor_sprite);
+
+      if (delay == 0)
+        return;
+
+      priv->animation_timeout_id =
+        g_timeout_add (delay,
+                       (GSourceFunc) meta_cursor_renderer_native_update_animation,
+                       native);
+      g_source_set_name_by_id (priv->animation_timeout_id,
+                               "[mutter] meta_cursor_renderer_native_update_animation");
+    }
+}
+
+static gboolean
+meta_cursor_renderer_native_update_cursor (MetaCursorRenderer *renderer,
+                                           MetaCursorSprite   *cursor_sprite)
 {
  MetaCursorRendererNative *native = META_CURSOR_RENDERER_NATIVE (renderer);
  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);

-  priv->has_hw_cursor = should_have_hw_cursor (renderer);
-  update_hw_cursor (native, FALSE);
+  if (cursor_sprite)
+    meta_cursor_sprite_realize_texture (cursor_sprite);
+
+  meta_cursor_renderer_native_trigger_frame (native, cursor_sprite);
+
+  priv->has_hw_cursor = should_have_hw_cursor (renderer, cursor_sprite);
+  update_hw_cursor (native, cursor_sprite, FALSE);
  return priv->has_hw_cursor;
 }

+static void
+get_hardware_cursor_size (MetaCursorRendererNative *native,
+                          uint64_t *width, uint64_t *height)
+{
+  MetaCursorRendererNativePrivate *priv =
+    meta_cursor_renderer_native_get_instance_private (native);
+
+  *width = priv->cursor_width;
+  *height = priv->cursor_height;
+}
+
+static void
+cursor_priv_free (gpointer data)
+{
+  MetaCursorNativePrivate *cursor_priv = data;
+  guint i;
+
+  if (!data)
+    return;
+
+  for (i = 0; i < HW_CURSOR_BUFFER_COUNT; i++)
+    g_clear_pointer (&cursor_priv->bos[0], (GDestroyNotify) gbm_bo_destroy);
+  g_slice_free (MetaCursorNativePrivate, cursor_priv);
+}
+
+static MetaCursorNativePrivate *
+ensure_cursor_priv (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+
+  if (!cursor_priv)
+    {
+      cursor_priv = g_slice_new0 (MetaCursorNativePrivate);
+      g_object_set_qdata_full (G_OBJECT (cursor_sprite),
+                               quark_cursor_sprite,
+                               cursor_priv,
+                               cursor_priv_free);
+    }
+
+  return cursor_priv;
+}
+
+static void
+load_cursor_sprite_gbm_buffer (MetaCursorRendererNative *native,
+                               MetaCursorSprite         *cursor_sprite,
+                               uint8_t                  *pixels,
+                               uint                      width,
+                               uint                      height,
+                               int                       rowstride,
+                               uint32_t                  gbm_format)
+{
+  MetaCursorRendererNativePrivate *priv =
+    meta_cursor_renderer_native_get_instance_private (native);
+  uint64_t cursor_width, cursor_height;
+
+  get_hardware_cursor_size (native, &cursor_width, &cursor_height);
+
+  if (width > cursor_width || height > cursor_height)
+    {
+      meta_warning ("Invalid theme cursor size (must be at most %ux%u)\n",
+                    (unsigned int)cursor_width, (unsigned int)cursor_height);
+      return;
+    }
+
+  if (gbm_device_is_format_supported (priv->gbm, gbm_format,
+                                      GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE))
+    {
+      struct gbm_bo *bo;
+      uint8_t buf[4 * cursor_width * cursor_height];
+      uint i;
+
+      bo = gbm_bo_create (priv->gbm, cursor_width, cursor_height,
+                          gbm_format, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
+      if (!bo)
+        {
+          meta_warning ("Failed to allocate HW cursor buffer\n");
+          return;
+        }
+
+      memset (buf, 0, sizeof(buf));
+      for (i = 0; i < height; i++)
+        memcpy (buf + i * 4 * cursor_width, pixels + i * rowstride, width * 4);
+      if (gbm_bo_write (bo, buf, cursor_width * cursor_height * 4) != 0)
+        {
+          meta_warning ("Failed to write cursors buffer data: %s",
+                        g_strerror (errno));
+          gbm_bo_destroy (bo);
+          return;
+        }
+
+      set_pending_cursor_sprite_gbm_bo (cursor_sprite, bo);
+    }
+  else
+    {
+      meta_warning ("HW cursor for format %d not supported\n", gbm_format);
+    }
+}
+
+static void
+invalidate_pending_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+  guint pending_bo;
+
+  if (!cursor_priv)
+    return;
+
+  pending_bo = get_pending_cursor_sprite_gbm_bo_index (cursor_sprite);
+  g_clear_pointer (&cursor_priv->bos[pending_bo],
+                   (GDestroyNotify) gbm_bo_destroy);
+  cursor_priv->pending_bo_state = META_CURSOR_GBM_BO_STATE_INVALIDATED;
+}
+
+#ifdef HAVE_WAYLAND
+static void
+meta_cursor_renderer_native_realize_cursor_from_wl_buffer (MetaCursorRenderer *renderer,
+                                                           MetaCursorSprite *cursor_sprite,
+                                                           struct wl_resource *buffer)
+{
+  MetaCursorRendererNative *native = META_CURSOR_RENDERER_NATIVE (renderer);
+  MetaCursorRendererNativePrivate *priv =
+    meta_cursor_renderer_native_get_instance_private (native);
+  uint32_t gbm_format;
+  uint64_t cursor_width, cursor_height;
+  CoglTexture *texture;
+  uint width, height;
+
+  /* Destroy any previous pending cursor buffer; we'll always either fail (which
+   * should unset, or succeed, which will set new buffer.
+   */
+  invalidate_pending_cursor_sprite_gbm_bo (cursor_sprite);
+
+  texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
+  width = cogl_texture_get_width (texture);
+  height = cogl_texture_get_height (texture);
+
+  struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get (buffer);
+  if (shm_buffer)
+    {
+      int rowstride = wl_shm_buffer_get_stride (shm_buffer);
+      uint8_t *buffer_data;
+
+      wl_shm_buffer_begin_access (shm_buffer);
+
+      switch (wl_shm_buffer_get_format (shm_buffer))
+        {
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+        case WL_SHM_FORMAT_ARGB8888:
+          gbm_format = GBM_FORMAT_ARGB8888;
+          break;
+        case WL_SHM_FORMAT_XRGB8888:
+          gbm_format = GBM_FORMAT_XRGB8888;
+          break;
+#else
+        case WL_SHM_FORMAT_ARGB8888:
+          gbm_format = GBM_FORMAT_ARGB8888;
+          break;
+        case WL_SHM_FORMAT_XRGB8888:
+          gbm_format = GBM_FORMAT_XRGB8888;
+          break;
+#endif
+        default:
+          g_warn_if_reached ();
+          gbm_format = GBM_FORMAT_ARGB8888;
+        }
+
+      buffer_data = wl_shm_buffer_get_data (shm_buffer);
+      load_cursor_sprite_gbm_buffer (native,
+                                     cursor_sprite,
+                                     buffer_data,
+                                     width, height, rowstride,
+                                     gbm_format);
+
+      wl_shm_buffer_end_access (shm_buffer);
+    }
+  else
+    {
+      struct gbm_bo *bo;
+
+      /* HW cursors have a predefined size (at least 64x64), which usually is
+       * bigger than cursor theme size, so themed cursors must be padded with
+       * transparent pixels to fill the overlay. This is trivial if we have CPU
+       * access to the data, but it's not possible if the buffer is in GPU
+       * memory (and possibly tiled too), so if we don't get the right size, we
+       * fallback to GL. */
+      get_hardware_cursor_size (native, &cursor_width, &cursor_height);
+
+      if (width != cursor_width || height != cursor_height)
+        {
+          meta_warning ("Invalid cursor size (must be 64x64), falling back to software (GL) cursors\n");
+          return;
+        }
+
+      bo = gbm_bo_import (priv->gbm,
+                          GBM_BO_IMPORT_WL_BUFFER,
+                          buffer,
+                          GBM_BO_USE_CURSOR);
+      if (!bo)
+        {
+          meta_warning ("Importing HW cursor from wl_buffer failed\n");
+          return;
+        }
+
+      set_pending_cursor_sprite_gbm_bo (cursor_sprite, bo);
+    }
+}
+#endif
+
+static void
+meta_cursor_renderer_native_realize_cursor_from_xcursor (MetaCursorRenderer *renderer,
+                                                         MetaCursorSprite *cursor_sprite,
+                                                         XcursorImage *xc_image)
+{
+  MetaCursorRendererNative *native = META_CURSOR_RENDERER_NATIVE (renderer);
+
+  invalidate_pending_cursor_sprite_gbm_bo (cursor_sprite);
+
+  load_cursor_sprite_gbm_buffer (native,
+                                 cursor_sprite,
+                                 (uint8_t *) xc_image->pixels,
+                                 xc_image->width,
+                                 xc_image->height,
+                                 xc_image->width * 4,
+                                 GBM_FORMAT_ARGB8888);
+}
+
 static void
 meta_cursor_renderer_native_class_init (MetaCursorRendererNativeClass *klass)
 {
@@ -166,6 +627,22 @@ meta_cursor_renderer_native_class_init (MetaCursorRendererNativeClass *klass)

  object_class->finalize = meta_cursor_renderer_native_finalize;
  renderer_class->update_cursor = meta_cursor_renderer_native_update_cursor;
+#ifdef HAVE_WAYLAND
+  renderer_class->realize_cursor_from_wl_buffer =
+    meta_cursor_renderer_native_realize_cursor_from_wl_buffer;
+#endif
+  renderer_class->realize_cursor_from_xcursor =
+    meta_cursor_renderer_native_realize_cursor_from_xcursor;
+
+  quark_cursor_sprite = g_quark_from_static_string ("-meta-cursor-native");
+}
+
+static void
+force_update_hw_cursor (MetaCursorRendererNative *native)
+{
+  MetaCursorRenderer *renderer = META_CURSOR_RENDERER (native);
+
+  update_hw_cursor (native, meta_cursor_renderer_get_cursor (renderer), TRUE);
 }

 static void
@@ -173,7 +650,7 @@ on_monitors_changed (MetaMonitorManager       *monitors,
                     MetaCursorRendererNative *native)
 {
  /* Our tracking is all messed up, so force an update. */
-  update_hw_cursor (native, TRUE);
+  force_update_hw_cursor (native);
 }

 static void
@@ -192,7 +669,7 @@ meta_cursor_renderer_native_init (MetaCursorRendererNative *native)
    {
      CoglRenderer *cogl_renderer = cogl_display_get_renderer (cogl_context_get_display (ctx));
      priv->drm_fd = cogl_kms_renderer_get_kms_fd (cogl_renderer);
-      priv->gbm = gbm_create_device (priv->drm_fd);
+      priv->gbm = cogl_kms_renderer_get_gbm (cogl_renderer);

      uint64_t width, height;
      if (drmGetCap (priv->drm_fd, DRM_CAP_CURSOR_WIDTH, &width) == 0 &&
@@ -218,18 +695,8 @@ meta_cursor_renderer_native_get_gbm_device (MetaCursorRendererNative *native)
  return priv->gbm;
 }

-void
-meta_cursor_renderer_native_get_cursor_size (MetaCursorRendererNative *native,
-                                             uint64_t *width, uint64_t *height)
-{
-  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
-
-  *width = priv->cursor_width;
-  *height = priv->cursor_height;
-}
-
 void
 meta_cursor_renderer_native_force_update (MetaCursorRendererNative *native)
 {
-  update_hw_cursor (native, TRUE);
+  force_update_hw_cursor (native);
 }
--- a/src/backends/native/meta-idle-monitor-native.c
+++ b/src/backends/native/meta-idle-monitor-native.c
@@ -164,56 +164,36 @@ meta_idle_monitor_native_init (MetaIdleMonitorNative *monitor_native)
  monitor->watches = g_hash_table_new_full (NULL, NULL, NULL, free_watch);
 }

-typedef struct {
-  MetaIdleMonitorNative *monitor_native;
-  GList *fired_watches;
-} CheckNativeClosure;
-
-static gboolean
-check_native_watch (gpointer key,
-                    gpointer value,
-                    gpointer user_data)
-{
-  MetaIdleMonitorWatchNative *watch_native = value;
-  MetaIdleMonitorWatch *watch = (MetaIdleMonitorWatch *) watch_native;
-  CheckNativeClosure *closure = user_data;
-  gboolean steal;
-
-  if (watch->timeout_msec == 0)
-    {
-      closure->fired_watches = g_list_prepend (closure->fired_watches, watch);
-      steal = TRUE;
-    }
-  else
-    {
-      g_source_set_ready_time (watch_native->timeout_source,
-                               closure->monitor_native->last_event_time +
-                               watch->timeout_msec * 1000);
-      steal = FALSE;
-    }
-
-  return steal;
-}
-
-static void
-fire_native_watch (gpointer watch,
-                   gpointer data)
-{
-  _meta_idle_monitor_watch_fire (watch);
-}
-
 void
 meta_idle_monitor_native_reset_idletime (MetaIdleMonitor *monitor)
 {
  MetaIdleMonitorNative *monitor_native = META_IDLE_MONITOR_NATIVE (monitor);
-  CheckNativeClosure closure;
+  GList *node, *watch_ids;

  monitor_native->last_event_time = g_get_monotonic_time ();

-  closure.monitor_native = monitor_native;
-  closure.fired_watches = NULL;
-  g_hash_table_foreach_steal (monitor->watches, check_native_watch, &closure);
+  watch_ids = g_hash_table_get_keys (monitor->watches);

-  g_list_foreach (closure.fired_watches, fire_native_watch, NULL);
-  g_list_free (closure.fired_watches);
+  for (node = watch_ids; node != NULL; node = node->next)
+    {
+      guint watch_id = GPOINTER_TO_UINT (node->data);
+      MetaIdleMonitorWatchNative *watch;
+
+      watch = g_hash_table_lookup (monitor->watches, GUINT_TO_POINTER (watch_id));
+      if (!watch)
+        continue;
+
+      if (watch->base.timeout_msec == 0)
+        {
+          _meta_idle_monitor_watch_fire ((MetaIdleMonitorWatch *) watch);
+        }
+      else
+        {
+          g_source_set_ready_time (watch->timeout_source,
+                                   monitor_native->last_event_time +
+                                   watch->base.timeout_msec * 1000);
+        }
+    }
+
+  g_list_free (watch_ids);
 }
--- a/src/backends/native/meta-input-settings-native.c
+++ b/src/backends/native/meta-input-settings-native.c
@@ -154,30 +154,30 @@ device_set_click_method (struct libinput_device            *libinput_device,
 }

 static void
-meta_input_settings_native_set_scroll_method (MetaInputSettings            *settings,
-                                              ClutterInputDevice           *device,
-                                              GDesktopTouchpadScrollMethod  mode)
+meta_input_settings_native_set_edge_scroll (MetaInputSettings            *settings,
+                                            ClutterInputDevice           *device,
+                                            gboolean                      edge_scrolling_enabled)
 {
  enum libinput_config_scroll_method scroll_method = 0;
  struct libinput_device *libinput_device;
+  enum libinput_config_scroll_method supported;

  libinput_device = clutter_evdev_input_device_get_libinput_device (device);
+  supported = libinput_device_config_scroll_get_methods (libinput_device);

-  switch (mode)
+  if (supported & LIBINPUT_CONFIG_SCROLL_2FG)
    {
-    case G_DESKTOP_TOUCHPAD_SCROLL_METHOD_DISABLED:
-      scroll_method = LIBINPUT_CONFIG_SCROLL_NO_SCROLL;
-      break;
-    case G_DESKTOP_TOUCHPAD_SCROLL_METHOD_EDGE_SCROLLING:
-      scroll_method = LIBINPUT_CONFIG_SCROLL_EDGE;
-      break;
-    case G_DESKTOP_TOUCHPAD_SCROLL_METHOD_TWO_FINGER_SCROLLING:
      scroll_method = LIBINPUT_CONFIG_SCROLL_2FG;
-      break;
-    default:
-      g_assert_not_reached ();
-      return;
-  }
+    }
+  else if (supported & LIBINPUT_CONFIG_SCROLL_EDGE &&
+           edge_scrolling_enabled)
+    {
+      scroll_method = LIBINPUT_CONFIG_SCROLL_EDGE;
+    }
+  else
+    {
+      scroll_method = LIBINPUT_CONFIG_SCROLL_NO_SCROLL;
+    }

  device_set_scroll_method (libinput_device, scroll_method);
 }
@@ -252,7 +252,7 @@ meta_input_settings_native_class_init (MetaInputSettingsNativeClass *klass)
  input_settings_class->set_left_handed = meta_input_settings_native_set_left_handed;
  input_settings_class->set_tap_enabled = meta_input_settings_native_set_tap_enabled;
  input_settings_class->set_invert_scroll = meta_input_settings_native_set_invert_scroll;
-  input_settings_class->set_scroll_method = meta_input_settings_native_set_scroll_method;
+  input_settings_class->set_edge_scroll = meta_input_settings_native_set_edge_scroll;
  input_settings_class->set_scroll_button = meta_input_settings_native_set_scroll_button;
  input_settings_class->set_click_method = meta_input_settings_native_set_click_method;
  input_settings_class->set_keyboard_repeat = meta_input_settings_native_set_keyboard_repeat;
--- a/src/backends/native/meta-launcher.c
+++ b/src/backends/native/meta-launcher.c
@@ -37,12 +37,20 @@
 #include <unistd.h>

 #include <systemd/sd-login.h>
+#include <gudev/gudev.h>

 #include "dbus-utils.h"
 #include "meta-dbus-login1.h"

 #include "backends/meta-backend-private.h"
 #include "meta-cursor-renderer-native.h"
+#include "meta-idle-monitor-native.h"
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GUdevDevice, g_object_unref)
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GUdevClient, g_object_unref)
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GUdevEnumerator, g_object_unref)
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(Login1Session, g_object_unref)
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(Login1Seat, g_object_unref)

 struct _MetaLauncher
 {
@@ -53,14 +61,21 @@ struct _MetaLauncher
 };

 static Login1Session *
-get_session_proxy (GCancellable *cancellable)
+get_session_proxy (GCancellable *cancellable,
+                   GError      **error)
 {
-  char *proxy_path;
-  char *session_id;
+  g_autofree char *proxy_path = NULL;
+  g_autofree char *session_id = NULL;
  Login1Session *session_proxy;

  if (sd_pid_get_session (getpid (), &session_id) < 0)
-    return NULL;
+    {
+      g_set_error (error,
+                   G_IO_ERROR,
+                   G_IO_ERROR_NOT_FOUND,
+                   "Could not get session ID: %m");
+      return NULL;
+    }

  proxy_path = get_escaped_dbus_path ("/org/freedesktop/login1/session", session_id);

@@ -68,31 +83,37 @@ get_session_proxy (GCancellable *cancellable)
                                                         G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
                                                         "org.freedesktop.login1",
                                                         proxy_path,
-                                                         cancellable, NULL);
-  free (proxy_path);
+                                                         cancellable, error);
+  if (!session_proxy)
+    g_prefix_error(error, "Could not get session proxy: ");

  return session_proxy;
 }

 static Login1Seat *
-get_seat_proxy (GCancellable *cancellable)
+get_seat_proxy (GCancellable *cancellable,
+                GError      **error)
 {
-  return login1_seat_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
-                                             G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
-                                             "org.freedesktop.login1",
-                                             "/org/freedesktop/login1/seat/self",
-                                             cancellable, NULL);
+  Login1Seat *seat = login1_seat_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+                                                         G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
+                                                         "org.freedesktop.login1",
+                                                         "/org/freedesktop/login1/seat/self",
+                                                         cancellable, error);
+  if (!seat)
+    g_prefix_error(error, "Could not get seat proxy: ");
+
+  return seat;
 }

 static void
 session_unpause (void)
 {
-  ClutterBackend *backend;
+  ClutterBackend *clutter_backend;
  CoglContext *cogl_context;
  CoglDisplay *cogl_display;

-  backend = clutter_get_default_backend ();
-  cogl_context = clutter_backend_get_cogl_context (backend);
+  clutter_backend = clutter_get_default_backend ();
+  cogl_context = clutter_backend_get_cogl_context (clutter_backend);
  cogl_display = cogl_context_get_display (cogl_context);
  cogl_kms_display_queue_modes_reset (cogl_display);

@@ -110,6 +131,7 @@ session_unpause (void)

    clutter_actor_queue_redraw (stage);
    meta_cursor_renderer_native_force_update (META_CURSOR_RENDERER_NATIVE (renderer));
+    meta_idle_monitor_native_reset_idletime (meta_idle_monitor_get_core ());
  }
 }

@@ -128,9 +150,8 @@ take_device (Login1Session *session_proxy,
             GCancellable  *cancellable,
             GError       **error)
 {
-  gboolean ret = FALSE;
-  GVariant *fd_variant = NULL;
-  GUnixFDList *fd_list = NULL;
+  g_autoptr (GVariant) fd_variant = NULL;
+  g_autoptr (GUnixFDList) fd_list = NULL;
  int fd = -1;

  if (!login1_session_call_take_device_sync (session_proxy,
@@ -142,21 +163,14 @@ take_device (Login1Session *session_proxy,
                                             &fd_list,
                                             cancellable,
                                             error))
-    goto out;
+    return FALSE;

  fd = g_unix_fd_list_get (fd_list, g_variant_get_handle (fd_variant), error);
  if (fd == -1)
-    goto out;
+    return FALSE;

  *out_fd = fd;
-  ret = TRUE;
-
- out:
-  if (fd_variant)
-    g_variant_unref (fd_variant);
-  if (fd_list)
-    g_object_unref (fd_list);
-  return ret;
+  return TRUE;
 }

 static gboolean
@@ -164,22 +178,16 @@ get_device_info_from_path (const char *path,
                           int        *out_major,
                           int        *out_minor)
 {
-  gboolean ret = FALSE;
  int r;
  struct stat st;

  r = stat (path, &st);
-  if (r < 0)
-    goto out;
-  if (!S_ISCHR (st.st_mode))
-    goto out;
+  if (r < 0 || !S_ISCHR (st.st_mode))
+    return FALSE;

  *out_major = major (st.st_rdev);
  *out_minor = minor (st.st_rdev);
-  ret = TRUE;
-
- out:
-  return ret;
+  return TRUE;
 }

 static gboolean
@@ -187,22 +195,16 @@ get_device_info_from_fd (int  fd,
                         int *out_major,
                         int *out_minor)
 {
-  gboolean ret = FALSE;
  int r;
  struct stat st;

  r = fstat (fd, &st);
-  if (r < 0)
-    goto out;
-  if (!S_ISCHR (st.st_mode))
-    goto out;
+  if (r < 0 || !S_ISCHR (st.st_mode))
+    return FALSE;

  *out_major = major (st.st_rdev);
  *out_minor = minor (st.st_rdev);
-  ret = TRUE;
-
- out:
-  return ret;
+  return TRUE;
 }

 static int
@@ -241,7 +243,7 @@ on_evdev_device_close (int      fd,
  if (!get_device_info_from_fd (fd, &major, &minor))
    {
      g_warning ("Could not get device info for fd %d: %m", fd);
-      return;
+      goto out;
    }

  if (!login1_session_call_release_device_sync (self->session_proxy,
@@ -250,6 +252,9 @@ on_evdev_device_close (int      fd,
    {
      g_warning ("Could not release device %d,%d: %s", major, minor, error->message);
    }
+
+out:
+  close (fd);
 }

 static void
@@ -277,25 +282,111 @@ on_active_changed (Login1Session *session,
  sync_active (self);
 }

+static gchar *
+get_primary_gpu_path (const gchar *seat_name)
+{
+  const gchar *subsystems[] = {"drm", NULL};
+  gchar *path = NULL;
+  GList *devices, *tmp;
+
+  g_autoptr (GUdevClient) gudev_client = g_udev_client_new (subsystems);
+  g_autoptr (GUdevEnumerator) enumerator = g_udev_enumerator_new (gudev_client);
+
+  g_udev_enumerator_add_match_name (enumerator, "card*");
+  g_udev_enumerator_add_match_tag (enumerator, "seat");
+
+  devices = g_udev_enumerator_execute (enumerator);
+  if (!devices)
+    goto out;
+
+  for (tmp = devices; tmp != NULL; tmp = tmp->next)
+    {
+      g_autoptr (GUdevDevice) platform_device = NULL;
+      g_autoptr (GUdevDevice) pci_device = NULL;
+      GUdevDevice *dev = tmp->data;
+      gint boot_vga;
+      const gchar *device_seat;
+
+      /* filter out devices that are not character device, like card0-VGA-1 */
+      if (g_udev_device_get_device_type (dev) != G_UDEV_DEVICE_TYPE_CHAR)
+        continue;
+
+      device_seat = g_udev_device_get_property (dev, "ID_SEAT");
+      if (!device_seat)
+        {
+          /* when ID_SEAT is not set, it means seat0 */
+          device_seat = "seat0";
+        }
+      else if (g_strcmp0 (device_seat, "seat0") != 0)
+        {
+          /* if the device has been explicitly assigned other seat
+           * than seat0, it is probably the right device to use */
+          path = g_strdup (g_udev_device_get_device_file (dev));
+          break;
+        }
+
+      /* skip devices that do not belong to our seat */
+      if (g_strcmp0 (seat_name, device_seat))
+        continue;
+
+      platform_device = g_udev_device_get_parent_with_subsystem (dev, "platform", NULL);
+      if (platform_device != NULL)
+        {
+          path = g_strdup (g_udev_device_get_device_file (dev));
+          break;
+        }
+
+      pci_device = g_udev_device_get_parent_with_subsystem (dev, "pci", NULL);
+      if (pci_device != NULL)
+        {
+          /* get value of boot_vga attribute or 0 if the device has no boot_vga */
+          boot_vga = g_udev_device_get_sysfs_attr_as_int (pci_device, "boot_vga");
+          if (boot_vga == 1)
+            {
+              /* found the boot_vga device */
+              path = g_strdup (g_udev_device_get_device_file (dev));
+              break;
+            }
+        }
+    }
+
+  g_list_free_full (devices, g_object_unref);
+
+out:
+  return path;
+}
+
 static gboolean
 get_kms_fd (Login1Session *session_proxy,
-            int *fd_out)
+            const gchar   *seat_id,
+            int           *fd_out,
+            GError       **error)
 {
  int major, minor;
  int fd;
-  GError *error = NULL;

-  /* XXX -- use udev to find the DRM master device */
-  if (!get_device_info_from_path ("/dev/dri/card0", &major, &minor))
+  g_autofree gchar *path = get_primary_gpu_path (seat_id);
+  if (!path)
    {
-      g_warning ("Could not stat /dev/dri/card0: %m");
+      g_set_error (error,
+                   G_IO_ERROR,
+                   G_IO_ERROR_NOT_FOUND,
+                   "could not find drm kms device");
      return FALSE;
    }

-  if (!take_device (session_proxy, major, minor, &fd, NULL, &error))
+  if (!get_device_info_from_path (path, &major, &minor))
    {
-      g_warning ("Could not open DRM device: %s\n", error->message);
-      g_error_free (error);
+      g_set_error (error,
+                   G_IO_ERROR,
+                   G_IO_ERROR_NOT_FOUND,
+                   "Could not get device info for path %s: %m", path);
+      return FALSE;
+    }
+
+  if (!take_device (session_proxy, major, minor, &fd, NULL, error))
+    {
+      g_prefix_error (error, "Could not open DRM device: ");
      return FALSE;
    }

@@ -304,28 +395,72 @@ get_kms_fd (Login1Session *session_proxy,
  return TRUE;
 }

-MetaLauncher *
-meta_launcher_new (void)
+static gchar *
+get_seat_id (GError **error)
 {
-  MetaLauncher *self = NULL;
-  Login1Session *session_proxy;
-  GError *error = NULL;
-  int kms_fd;
+  g_autofree char *session_id = NULL;
+  char *seat_id = NULL;
+  int r;

-  session_proxy = get_session_proxy (NULL);
-  if (!login1_session_call_take_control_sync (session_proxy, FALSE, NULL, &error))
+  r = sd_pid_get_session (0, &session_id);
+  if (r < 0)
    {
-      g_warning ("Could not take control: %s", error->message);
-      g_error_free (error);
-      goto out;
+      g_set_error (error,
+                   G_IO_ERROR,
+                   G_IO_ERROR_NOT_FOUND,
+                   "Could not get session for PID: %s", g_strerror (-r));
+      return NULL;
    }

-  if (!get_kms_fd (session_proxy, &kms_fd))
-    goto out;
+  r = sd_session_get_seat (session_id, &seat_id);
+  if (r < 0)
+    {
+      g_set_error (error,
+                   G_IO_ERROR,
+                   G_IO_ERROR_NOT_FOUND,
+                   "Could not get seat for session: %s", g_strerror (-r));
+      return NULL;
+    }
+
+  return seat_id;
+}
+
+MetaLauncher *
+meta_launcher_new (GError **error)
+{
+  MetaLauncher *self = NULL;
+  g_autoptr (Login1Session) session_proxy = NULL;
+  g_autoptr (Login1Seat) seat_proxy = NULL;
+  g_autofree char *seat_id = NULL;
+  gboolean have_control = FALSE;
+  int kms_fd;
+
+  session_proxy = get_session_proxy (NULL, error);
+  if (!session_proxy)
+    goto fail;
+
+  if (!login1_session_call_take_control_sync (session_proxy, FALSE, NULL, error))
+    {
+      g_prefix_error (error, "Could not take control: ");
+      goto fail;
+    }
+
+  have_control = TRUE;
+
+  seat_id = get_seat_id (error);
+  if (!seat_id)
+    goto fail;
+
+  seat_proxy = get_seat_proxy (NULL, error);
+  if (!seat_proxy)
+    goto fail;
+
+  if (!get_kms_fd (session_proxy, seat_id, &kms_fd, error))
+    goto fail;

  self = g_slice_new0 (MetaLauncher);
  self->session_proxy = g_object_ref (session_proxy);
-  self->seat_proxy = get_seat_proxy (NULL);
+  self->seat_proxy = g_object_ref (seat_proxy);

  self->session_active = TRUE;

@@ -335,11 +470,12 @@ meta_launcher_new (void)
                                      self);

  g_signal_connect (self->session_proxy, "notify::active", G_CALLBACK (on_active_changed), self);
-
-out:
-  g_object_unref (session_proxy);
-
  return self;
+
+ fail:
+  if (have_control)
+    login1_session_call_release_control_sync (session_proxy, NULL, NULL);
+  return NULL;
 }

 void
--- a/src/backends/native/meta-launcher.h
+++ b/src/backends/native/meta-launcher.h
@@ -24,7 +24,7 @@

 typedef struct _MetaLauncher MetaLauncher;

-MetaLauncher     *meta_launcher_new                     (void);
+MetaLauncher     *meta_launcher_new                     (GError       **error);
 void              meta_launcher_free                    (MetaLauncher  *self);

 gboolean          meta_launcher_activate_session        (MetaLauncher  *self,
--- a/src/backends/native/meta-monitor-manager-kms.c
+++ b/src/backends/native/meta-monitor-manager-kms.c
@@ -42,6 +42,8 @@

 #include <gudev/gudev.h>

+#define ALL_TRANSFORMS (META_MONITOR_TRANSFORM_FLIPPED_270 + 1)
+
 typedef struct {
  drmModeConnector *connector;

@@ -55,8 +57,22 @@ typedef struct {

  uint32_t dpms_prop_id;
  uint32_t edid_blob_id;
+  uint32_t tile_blob_id;
+
+  int suggested_x;
+  int suggested_y;
+  uint32_t hotplug_mode_update;
 } MetaOutputKms;

+typedef struct {
+  uint32_t underscan_prop_id;
+  uint32_t underscan_hborder_prop_id;
+  uint32_t underscan_vborder_prop_id;
+  uint32_t primary_plane_id;
+  uint32_t rotation_prop_id;
+  uint32_t rotation_map[ALL_TRANSFORMS];
+} MetaCRTCKms;
+
 struct _MetaMonitorManagerKms
 {
  MetaMonitorManager parent_instance;
@@ -104,7 +120,7 @@ make_output_name (drmModeConnector *connector)
  static const char * const connector_type_names[] = {
    "unknown", "VGA", "DVII", "DVID", "DVID", "Composite",
    "SVIDEO", "LVDS", "Component", "9PinDIN", "DisplayPort",
-    "HDMIA", "HDMIB", "TV", "eDP"
+    "HDMIA", "HDMIB", "TV", "eDP", "Virtual", "DSI"
  };
  const char *connector_type_name;

@@ -137,6 +153,12 @@ meta_monitor_mode_destroy_notify (MetaMonitorMode *output)
  g_slice_free (drmModeModeInfo, output->driver_private);
 }

+static void
+meta_crtc_destroy_notify (MetaCRTC *crtc)
+{
+  g_free (crtc->driver_private);
+}
+
 static gboolean
 drm_mode_equal (gconstpointer one,
                gconstpointer two)
@@ -181,24 +203,67 @@ drm_mode_hash (gconstpointer ptr)
 }

 static void
-find_properties (MetaMonitorManagerKms *manager_kms,
-                 MetaOutputKms         *output_kms)
+find_connector_properties (MetaMonitorManagerKms *manager_kms,
+                           MetaOutputKms         *output_kms)
 {
-  drmModePropertyPtr prop;
  int i;

+  output_kms->hotplug_mode_update = 0;
+  output_kms->suggested_x = -1;
+  output_kms->suggested_y = -1;
  for (i = 0; i < output_kms->connector->count_props; i++)
    {
-      prop = drmModeGetProperty (manager_kms->fd, output_kms->connector->props[i]);
+      drmModePropertyPtr prop = drmModeGetProperty (manager_kms->fd, output_kms->connector->props[i]);
      if (!prop)
        continue;

-      if ((prop->flags & DRM_MODE_PROP_ENUM) &&
-          strcmp(prop->name, "DPMS") == 0)
+      if ((prop->flags & DRM_MODE_PROP_ENUM) && strcmp (prop->name, "DPMS") == 0)
        output_kms->dpms_prop_id = prop->prop_id;
-      else if ((prop->flags & DRM_MODE_PROP_BLOB) &&
-               strcmp (prop->name, "EDID") == 0)
+      else if ((prop->flags & DRM_MODE_PROP_BLOB) && strcmp (prop->name, "EDID") == 0)
        output_kms->edid_blob_id = output_kms->connector->prop_values[i];
+      else if ((prop->flags & DRM_MODE_PROP_BLOB) &&
+               strcmp (prop->name, "TILE") == 0)
+        output_kms->tile_blob_id = output_kms->connector->prop_values[i];
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) &&
+               strcmp (prop->name, "suggested X") == 0)
+        output_kms->suggested_x = output_kms->connector->prop_values[i];
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) &&
+               strcmp (prop->name, "suggested Y") == 0)
+        output_kms->suggested_y = output_kms->connector->prop_values[i];
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) &&
+               strcmp (prop->name, "hotplug_mode_update") == 0)
+        output_kms->hotplug_mode_update = output_kms->connector->prop_values[i];
+      
+      drmModeFreeProperty (prop);
+    }
+}
+
+static void
+find_crtc_properties (MetaMonitorManagerKms *manager_kms,
+                      MetaCRTC *meta_crtc)
+{
+  MetaCRTCKms *crtc_kms;
+  drmModeObjectPropertiesPtr props;
+  size_t i;
+
+  crtc_kms = meta_crtc->driver_private;
+
+  props = drmModeObjectGetProperties (manager_kms->fd, meta_crtc->crtc_id, DRM_MODE_OBJECT_CRTC);
+  if (!props)
+    return;
+
+  for (i = 0; i < props->count_props; i++)
+    {
+      drmModePropertyPtr prop = drmModeGetProperty (manager_kms->fd, props->props[i]);
+      if (!prop)
+        continue;
+
+      if ((prop->flags & DRM_MODE_PROP_ENUM) && strcmp (prop->name, "underscan") == 0)
+        crtc_kms->underscan_prop_id = prop->prop_id;
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) && strcmp (prop->name, "underscan hborder") == 0)
+        crtc_kms->underscan_hborder_prop_id = prop->prop_id;
+      else if ((prop->flags & DRM_MODE_PROP_RANGE) && strcmp (prop->name, "underscan vborder") == 0)
+        crtc_kms->underscan_vborder_prop_id = prop->prop_id;

      drmModeFreeProperty (prop);
    }
@@ -233,6 +298,47 @@ read_output_edid (MetaMonitorManagerKms *manager_kms,
    }
 }

+static gboolean
+output_get_tile_info (MetaMonitorManagerKms *manager_kms,
+                      MetaOutput            *output)
+{
+  MetaOutputKms *output_kms = output->driver_private;
+  drmModePropertyBlobPtr tile_blob = NULL;
+  int ret;
+
+  if (output_kms->tile_blob_id == 0)
+    return FALSE;
+
+  tile_blob = drmModeGetPropertyBlob (manager_kms->fd, output_kms->tile_blob_id);
+  if (!tile_blob)
+    {
+      meta_warning ("Failed to read TILE of output %s: %s\n", output->name, strerror(errno));
+      return FALSE;
+    }
+
+  if (tile_blob->length > 0)
+    {
+      ret = sscanf ((char *)tile_blob->data, "%d:%d:%d:%d:%d:%d:%d:%d",
+                    &output->tile_info.group_id,
+                    &output->tile_info.flags,
+                    &output->tile_info.max_h_tiles,
+                    &output->tile_info.max_v_tiles,
+                    &output->tile_info.loc_h_tile,
+                    &output->tile_info.loc_v_tile,
+                    &output->tile_info.tile_w,
+                    &output->tile_info.tile_h);
+
+      if (ret != 8)
+        return FALSE;
+      return TRUE;
+    }
+  else
+    {
+      drmModeFreePropertyBlob (tile_blob);
+      return FALSE;
+    }
+}
+
 static MetaMonitorMode *
 find_meta_mode (MetaMonitorManager    *manager,
                const drmModeModeInfo *drm_mode)
@@ -328,6 +434,137 @@ get_output_scale (MetaMonitorManager *manager,
    return compute_scale (output);
 }

+static int
+find_property_index (MetaMonitorManager         *manager,
+                     drmModeObjectPropertiesPtr  props,
+                     const gchar                *prop_name,
+                     drmModePropertyPtr         *found)
+{
+  MetaMonitorManagerKms *manager_kms = META_MONITOR_MANAGER_KMS (manager);
+  unsigned int i;
+
+  for (i = 0; i < props->count_props; i++)
+    {
+      drmModePropertyPtr prop;
+
+      prop = drmModeGetProperty (manager_kms->fd, props->props[i]);
+      if (!prop)
+        continue;
+
+      if (strcmp (prop->name, prop_name) == 0)
+        {
+          *found = prop;
+          return i;
+        }
+
+      drmModeFreeProperty (prop);
+    }
+
+  return -1;
+}
+
+static void
+parse_transforms (MetaMonitorManager *manager,
+                  drmModePropertyPtr  prop,
+                  MetaCRTC           *crtc)
+{
+  MetaCRTCKms *crtc_kms = crtc->driver_private;
+  int i;
+
+  for (i = 0; i < prop->count_enums; i++)
+    {
+      int cur = -1;
+
+      if (strcmp (prop->enums[i].name, "rotate-0") == 0)
+        cur = META_MONITOR_TRANSFORM_NORMAL;
+      else if (strcmp (prop->enums[i].name, "rotate-90") == 0)
+        cur = META_MONITOR_TRANSFORM_90;
+      else if (strcmp (prop->enums[i].name, "rotate-180") == 0)
+        cur = META_MONITOR_TRANSFORM_180;
+      else if (strcmp (prop->enums[i].name, "rotate-270") == 0)
+        cur = META_MONITOR_TRANSFORM_270;
+
+      if (cur != -1)
+        {
+          crtc->all_transforms |= 1 << cur;
+          crtc_kms->rotation_map[cur] = 1 << prop->enums[i].value;
+        }
+    }
+}
+
+static gboolean
+is_primary_plane (MetaMonitorManager         *manager,
+                  drmModeObjectPropertiesPtr  props)
+{
+  drmModePropertyPtr prop;
+  int idx;
+
+  idx = find_property_index (manager, props, "type", &prop);
+  if (idx < 0)
+    return FALSE;
+
+  drmModeFreeProperty (prop);
+  return props->prop_values[idx] == DRM_PLANE_TYPE_PRIMARY;
+}
+
+static void
+init_crtc_rotations (MetaMonitorManager *manager,
+                     MetaCRTC           *crtc,
+                     unsigned int        idx)
+{
+  MetaMonitorManagerKms *manager_kms = META_MONITOR_MANAGER_KMS (manager);
+  drmModeObjectPropertiesPtr props;
+  drmModePlaneRes *planes;
+  drmModePlane *drm_plane;
+  MetaCRTCKms *crtc_kms;
+  unsigned int i;
+
+  crtc_kms = crtc->driver_private;
+
+  planes = drmModeGetPlaneResources(manager_kms->fd);
+  if (planes == NULL)
+    return;
+
+  for (i = 0; i < planes->count_planes; i++)
+    {
+      drmModePropertyPtr prop;
+
+      drm_plane = drmModeGetPlane (manager_kms->fd, planes->planes[i]);
+
+      if (!drm_plane)
+        continue;
+
+      if ((drm_plane->possible_crtcs & (1 << idx)))
+        {
+          props = drmModeObjectGetProperties (manager_kms->fd,
+                                              drm_plane->plane_id,
+                                              DRM_MODE_OBJECT_PLANE);
+
+          if (props && is_primary_plane (manager, props))
+            {
+              int rotation_idx;
+
+              crtc_kms->primary_plane_id = drm_plane->plane_id;
+              rotation_idx = find_property_index (manager, props, "rotation", &prop);
+
+              if (rotation_idx >= 0)
+                {
+                  crtc_kms->rotation_prop_id = props->props[rotation_idx];
+                  parse_transforms (manager, prop, crtc);
+                  drmModeFreeProperty (prop);
+                }
+            }
+
+          if (props)
+            drmModeFreeObjectProperties (props);
+        }
+
+      drmModeFreePlane (drm_plane);
+    }
+
+  drmModeFreePlaneResources (planes);
+}
+
 static void
 meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
 {
@@ -395,8 +632,18 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
      meta_mode->name = g_strndup (mode->name, DRM_DISPLAY_MODE_LEN);
      meta_mode->width = mode->hdisplay;
      meta_mode->height = mode->vdisplay;
-      meta_mode->refresh_rate = (1000 * mode->clock /
-                                 ((float)mode->htotal * mode->vtotal));
+
+      /* Calculate refresh rate in milliHz first for extra precision. */
+      meta_mode->refresh_rate = (mode->clock * 1000000LL) / mode->htotal;
+      meta_mode->refresh_rate += (mode->vtotal / 2);
+      meta_mode->refresh_rate /= mode->vtotal;
+      if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+	meta_mode->refresh_rate *= 2;
+      if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+        meta_mode->refresh_rate /= 2;
+      if (mode->vscan > 1)
+        meta_mode->refresh_rate /= mode->vscan;
+      meta_mode->refresh_rate /= 1000.0;

      meta_mode->driver_private = g_slice_dup (drmModeModeInfo, mode);
      meta_mode->driver_notify = (GDestroyNotify)meta_monitor_mode_destroy_notify;
@@ -442,6 +689,11 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
          height = MAX (height, meta_crtc->rect.y + meta_crtc->rect.height);
        }

+      meta_crtc->driver_private = g_new0 (MetaCRTCKms, 1);
+      meta_crtc->driver_notify = (GDestroyNotify) meta_crtc_destroy_notify;
+      find_crtc_properties (manager_kms, meta_crtc);
+      init_crtc_rotations (manager, meta_crtc, i);
+
      drmModeFreeCrtc (crtc);
    }

@@ -472,8 +724,6 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
 	  meta_output->name = make_output_name (connector);
 	  meta_output->width_mm = connector->mmWidth;
 	  meta_output->height_mm = connector->mmHeight;
-	  meta_output->suggested_x = -1;
-	  meta_output->suggested_y = -1;

          switch (connector->subpixel)
            {
@@ -498,11 +748,17 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
              break;
            }

+	  meta_output->preferred_mode = NULL;
 	  meta_output->n_modes = connector->count_modes;
 	  meta_output->modes = g_new0 (MetaMonitorMode *, meta_output->n_modes);
-	  for (j = 0; j < meta_output->n_modes; j++)
+	  for (j = 0; j < meta_output->n_modes; j++) {
            meta_output->modes[j] = find_meta_mode (manager, &connector->modes[j]);
-	  meta_output->preferred_mode = meta_output->modes[0];
+            if (connector->modes[j].type & DRM_MODE_TYPE_PREFERRED)
+              meta_output->preferred_mode = meta_output->modes[j];
+          }
+
+          if (!meta_output->preferred_mode)
+            meta_output->preferred_mode = meta_output->modes[0];

          output_kms->connector = connector;
          output_kms->n_encoders = connector->count_encoders;
@@ -567,8 +823,11 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)
              meta_output->is_presentation = FALSE;
            }

-          find_properties (manager_kms, output_kms);
-
+          find_connector_properties (manager_kms, output_kms);
+          meta_output->suggested_x = output_kms->suggested_x;
+          meta_output->suggested_y = output_kms->suggested_y;
+          meta_output->hotplug_mode_update = output_kms->hotplug_mode_update;
+          
          edid = read_output_edid (manager_kms, meta_output);
          meta_output_parse_edid (meta_output, edid);
          g_bytes_unref (edid);
@@ -578,6 +837,8 @@ meta_monitor_manager_kms_read_current (MetaMonitorManager *manager)

          meta_output->scale = get_output_scale (manager, meta_output);

+          output_get_tile_info (manager_kms, meta_output);
+
          /* FIXME: backlight is a very driver specific thing unfortunately,
             every DDX does its own thing, and the dumb KMS API does not include it.

@@ -723,8 +984,9 @@ meta_monitor_manager_kms_set_power_save_mode (MetaMonitorManager *manager,

      if (output_kms->dpms_prop_id != 0)
        {
-          int ok = drmModeConnectorSetProperty(manager_kms->fd, meta_output->winsys_id,
-                                               output_kms->dpms_prop_id, state);
+          int ok = drmModeObjectSetProperty (manager_kms->fd, meta_output->winsys_id,
+                                             DRM_MODE_OBJECT_CONNECTOR,
+                                             output_kms->dpms_prop_id, state);

          if (ok < 0)
            meta_warning ("Failed to set power save mode for output %s: %s\n",
@@ -748,6 +1010,48 @@ crtc_free (CoglKmsCrtc *crtc)
  g_slice_free (CoglKmsCrtc, crtc);
 }

+static void
+set_underscan (MetaMonitorManagerKms *manager_kms,
+               MetaOutput *output)
+{
+  if (!output->crtc)
+    return;
+
+  MetaCRTC *crtc = output->crtc;
+  MetaCRTCKms *crtc_kms = crtc->driver_private;
+  if (!crtc_kms->underscan_prop_id)
+    return;
+
+  if (output->is_underscanning)
+    {
+      drmModeObjectSetProperty (manager_kms->fd, crtc->crtc_id,
+                                DRM_MODE_OBJECT_CRTC,
+                                crtc_kms->underscan_prop_id, (uint64_t) 1);
+
+      if (crtc_kms->underscan_hborder_prop_id)
+        {
+          uint64_t value = crtc->current_mode->width * 0.05;
+          drmModeObjectSetProperty (manager_kms->fd, crtc->crtc_id,
+                                    DRM_MODE_OBJECT_CRTC,
+                                    crtc_kms->underscan_hborder_prop_id, value);
+        }
+      if (crtc_kms->underscan_vborder_prop_id)
+        {
+          uint64_t value = crtc->current_mode->height * 0.05;
+          drmModeObjectSetProperty (manager_kms->fd, crtc->crtc_id,
+                                    DRM_MODE_OBJECT_CRTC,
+                                    crtc_kms->underscan_vborder_prop_id, value);
+        }
+
+    }
+  else
+    {
+      drmModeObjectSetProperty (manager_kms->fd, crtc->crtc_id,
+                                DRM_MODE_OBJECT_CRTC,
+                                crtc_kms->underscan_prop_id, (uint64_t) 0);
+    }
+}
+
 static void
 meta_monitor_manager_kms_apply_configuration (MetaMonitorManager *manager,
                                              MetaCRTCInfo       **crtcs,
@@ -755,6 +1059,7 @@ meta_monitor_manager_kms_apply_configuration (MetaMonitorManager *manager,
                                              MetaOutputInfo     **outputs,
                                              unsigned int         n_outputs)
 {
+  MetaMonitorManagerKms *manager_kms = META_MONITOR_MANAGER_KMS (manager);
  ClutterBackend *backend;
  CoglContext *cogl_context;
  CoglDisplay *cogl_display;
@@ -770,6 +1075,7 @@ meta_monitor_manager_kms_apply_configuration (MetaMonitorManager *manager,
    {
      MetaCRTCInfo *crtc_info = crtcs[i];
      MetaCRTC *crtc = crtc_info->crtc;
+      MetaCRTCKms *crtc_kms = crtc->driver_private;
      CoglKmsCrtc *cogl_crtc;

      crtc->is_dirty = TRUE;
@@ -842,6 +1148,13 @@ meta_monitor_manager_kms_apply_configuration (MetaMonitorManager *manager,
          crtc->current_mode = mode;
          crtc->transform = crtc_info->transform;
        }
+
+      if (crtc->all_transforms & (1 << crtc->transform))
+        drmModeObjectSetProperty (manager_kms->fd,
+                                  crtc_kms->primary_plane_id,
+                                  DRM_MODE_OBJECT_PLANE,
+                                  crtc_kms->rotation_prop_id,
+                                  crtc_kms->rotation_map[crtc->transform]);
    }

  /* Disable CRTCs not mentioned in the list (they have is_dirty == FALSE,
@@ -900,6 +1213,9 @@ meta_monitor_manager_kms_apply_configuration (MetaMonitorManager *manager,

      output->is_primary = output_info->is_primary;
      output->is_presentation = output_info->is_presentation;
+      output->is_underscanning = output_info->is_underscanning;
+
+      set_underscan (manager_kms, output);
    }

  /* Disable outputs not mentioned in the list */
@@ -991,6 +1307,8 @@ meta_monitor_manager_kms_init (MetaMonitorManagerKms *manager_kms)

  manager_kms->fd = cogl_kms_renderer_get_kms_fd (cogl_renderer);

+  drmSetClientCap (manager_kms->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
+
  const char *subsystems[2] = { "drm", NULL };
  manager_kms->udev = g_udev_client_new (subsystems);
  g_signal_connect (manager_kms->udev, "uevent",
--- a/src/backends/x11/meta-backend-x11.c
+++ b/src/backends/x11/meta-backend-x11.c
@@ -40,12 +40,24 @@
 #include "meta-idle-monitor-xsync.h"
 #include "meta-monitor-manager-xrandr.h"
 #include "backends/meta-monitor-manager-dummy.h"
+#include "backends/x11/nested/meta-cursor-renderer-x11-nested.h"
 #include "meta-cursor-renderer-x11.h"
+#ifdef HAVE_WAYLAND
+#include "wayland/meta-wayland.h"
+#endif

 #include <meta/util.h>
 #include "display-private.h"
 #include "compositor/compositor-private.h"

+typedef enum {
+  /* We're a traditional CM running under the host. */
+  META_BACKEND_X11_MODE_COMPOSITOR,
+
+  /* We're a nested X11 client */
+  META_BACKEND_X11_MODE_NESTED,
+} MetaBackendX11Mode;
+
 struct _MetaBackendX11Private
 {
  /* The host X11 display */
@@ -53,6 +65,8 @@ struct _MetaBackendX11Private
  xcb_connection_t *xcb;
  GSource *source;

+  MetaBackendX11Mode mode;
+
  int xsync_event_base;
  int xsync_error_base;

@@ -68,6 +82,7 @@ struct _MetaBackendX11Private
  gchar *keymap_layouts;
  gchar *keymap_variants;
  gchar *keymap_options;
+  int locked_group;
 };
 typedef struct _MetaBackendX11Private MetaBackendX11Private;

@@ -102,7 +117,7 @@ translate_device_event (MetaBackendX11 *x11,
      /* This codepath should only ever trigger as an X11 compositor,
       * and never under nested, as under nested all backend events
       * should be reported with respect to the stage window. */
-      g_assert (!meta_is_wayland_compositor ());
+      g_assert (priv->mode == META_BACKEND_X11_MODE_COMPOSITOR);

      device_event->event = stage_window;

@@ -133,6 +148,8 @@ static void
 translate_crossing_event (MetaBackendX11 *x11,
                          XIEnterEvent   *enter_event)
 {
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
+
  /* Throw out weird events generated by grabs. */
  if (enter_event->mode == XINotifyGrab ||
      enter_event->mode == XINotifyUngrab)
@@ -141,7 +158,14 @@ translate_crossing_event (MetaBackendX11 *x11,
      return;
    }

-  enter_event->event = meta_backend_x11_get_xwindow (x11);
+  Window stage_window = meta_backend_x11_get_xwindow (x11);
+  if (enter_event->event != stage_window &&
+      priv->mode == META_BACKEND_X11_MODE_COMPOSITOR)
+    {
+      enter_event->event = meta_backend_x11_get_xwindow (x11);
+      enter_event->event_x = enter_event->root_x;
+      enter_event->event_y = enter_event->root_y;
+    }
 }

 static void
@@ -250,20 +274,47 @@ handle_host_xevent (MetaBackend *backend,
      }
  }

+  if (priv->mode == META_BACKEND_X11_MODE_NESTED && event->type == FocusIn)
+    {
+#ifdef HAVE_WAYLAND
+      Window xwin = meta_backend_x11_get_xwindow(x11);
+      XEvent xev;
+
+      if (event->xfocus.window == xwin)
+        {
+          /* Since we've selected for KeymapStateMask, every FocusIn is followed immediately
+           * by a KeymapNotify event */
+          XMaskEvent(priv->xdisplay, KeymapStateMask, &xev);
+          MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+          meta_wayland_compositor_update_key_state (compositor, xev.xkeymap.key_vector, 32, 8);
+        }
+#else
+      g_assert_not_reached ();
+#endif
+    }
+
  if (event->type == (priv->xsync_event_base + XSyncAlarmNotify))
    handle_alarm_notify (backend, event);

  if (event->type == priv->xkb_event_base)
    {
-      XkbAnyEvent *xkb_ev = (XkbAnyEvent *) event;
+      XkbEvent *xkb_ev = (XkbEvent *) event;

-      if (xkb_ev->device == META_VIRTUAL_CORE_KEYBOARD_ID)
+      if (xkb_ev->any.device == META_VIRTUAL_CORE_KEYBOARD_ID)
        {
-          switch (xkb_ev->xkb_type)
+          switch (xkb_ev->any.xkb_type)
            {
            case XkbNewKeyboardNotify:
            case XkbMapNotify:
              keymap_changed (backend);
+              break;
+            case XkbStateNotify:
+              if (xkb_ev->state.changed & XkbGroupLockMask)
+                {
+                  if (priv->locked_group != xkb_ev->state.locked_group)
+                    XkbLockGroup (priv->xdisplay, XkbUseCoreKbd, priv->locked_group);
+                }
+              break;
            default:
              break;
            }
@@ -399,6 +450,7 @@ meta_backend_x11_post_init (MetaBackend *backend)
  MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
  int major, minor;
+  gboolean has_xi = FALSE;

  priv->xdisplay = clutter_x11_get_default_display ();

@@ -408,29 +460,27 @@ meta_backend_x11_post_init (MetaBackend *backend)
      !XSyncInitialize (priv->xdisplay, &major, &minor))
    meta_fatal ("Could not initialize XSync");

-  {
-    int major = 2, minor = 3;
-    gboolean has_xi = FALSE;
+  if (XQueryExtension (priv->xdisplay,
+                       "XInputExtension",
+                       &priv->xinput_opcode,
+                       &priv->xinput_error_base,
+                       &priv->xinput_event_base))
+    {
+      major = 2; minor = 3;
+      if (XIQueryVersion (priv->xdisplay, &major, &minor) == Success)
+        {
+          int version = (major * 10) + minor;
+          if (version >= 22)
+            has_xi = TRUE;
+        }
+    }

-    if (XQueryExtension (priv->xdisplay,
-                         "XInputExtension",
-                         &priv->xinput_opcode,
-                         &priv->xinput_error_base,
-                         &priv->xinput_event_base))
-      {
-        if (XIQueryVersion (priv->xdisplay, &major, &minor) == Success)
-          {
-            int version = (major * 10) + minor;
-            if (version >= 22)
-              has_xi = TRUE;
-          }
-      }
+  if (!has_xi)
+    meta_fatal ("X server doesn't have the XInput extension, version 2.2 or newer\n");

-    if (!has_xi)
-      meta_fatal ("X server doesn't have the XInput extension, version 2.2 or newer\n");
-  }
-
-  take_touch_grab (backend);
+  /* We only take the passive touch grab if we are a X11 compositor */
+  if (priv->mode == META_BACKEND_X11_MODE_COMPOSITOR)
+    take_touch_grab (backend);

  priv->xcb = XGetXCBConnection (priv->xdisplay);
  if (!xkb_x11_setup_xkb_extension (priv->xcb,
@@ -461,19 +511,37 @@ meta_backend_x11_create_idle_monitor (MetaBackend *backend,
 static MetaMonitorManager *
 meta_backend_x11_create_monitor_manager (MetaBackend *backend)
 {
-  /* If we're a Wayland compositor using the X11 backend,
-   * we're a nested configuration, so return the dummy
-   * monitor setup. */
-  if (meta_is_wayland_compositor ())
-    return g_object_new (META_TYPE_MONITOR_MANAGER_DUMMY, NULL);
+  MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);

-  return g_object_new (META_TYPE_MONITOR_MANAGER_XRANDR, NULL);
+  switch (priv->mode)
+    {
+    case META_BACKEND_X11_MODE_COMPOSITOR:
+      return g_object_new (META_TYPE_MONITOR_MANAGER_XRANDR, NULL);
+    case META_BACKEND_X11_MODE_NESTED:
+      return g_object_new (META_TYPE_MONITOR_MANAGER_DUMMY, NULL);
+    default:
+      g_assert_not_reached ();
+    }
 }

 static MetaCursorRenderer *
 meta_backend_x11_create_cursor_renderer (MetaBackend *backend)
 {
-  return g_object_new (META_TYPE_CURSOR_RENDERER_X11, NULL);
+  MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
+
+  switch (priv->mode)
+    {
+    case META_BACKEND_X11_MODE_COMPOSITOR:
+      return g_object_new (META_TYPE_CURSOR_RENDERER_X11, NULL);
+      break;
+    case META_BACKEND_X11_MODE_NESTED:
+      return g_object_new (META_TYPE_CURSOR_RENDERER_X11_NESTED, NULL);
+      break;
+    default:
+      g_assert_not_reached ();
+    }
 }

 static gboolean
@@ -701,6 +769,9 @@ meta_backend_x11_get_keymap (MetaBackend *backend)
                                                     priv->xcb,
                                                     xkb_x11_get_core_keyboard_device_id (priv->xcb),
                                                     XKB_KEYMAP_COMPILE_NO_FLAGS);
+      if (priv->keymap == NULL)
+        priv->keymap = xkb_keymap_new_from_names (context, NULL, XKB_KEYMAP_COMPILE_NO_FLAGS);
+
      xkb_context_unref (context);
    }

@@ -714,6 +785,7 @@ meta_backend_x11_lock_layout_group (MetaBackend *backend,
  MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);

+  priv->locked_group = idx;
  XkbLockGroup (priv->xdisplay, XkbUseCoreKbd, idx);
 }

@@ -721,7 +793,10 @@ static void
 meta_backend_x11_update_screen_size (MetaBackend *backend,
                                     int width, int height)
 {
-  if (meta_is_wayland_compositor ())
+  MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
+
+  if (priv->mode == META_BACKEND_X11_MODE_NESTED)
    {
      /* For a nested wayland session, we want to go through Clutter to update the
       * toplevel window size, rather than doing it directly.
@@ -730,8 +805,6 @@ meta_backend_x11_update_screen_size (MetaBackend *backend,
    }
  else
    {
-      MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
-      MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
      Window xwin = meta_backend_x11_get_xwindow (x11);
      XResizeWindow (priv->xdisplay, xwin, width, height);
    }
@@ -755,10 +828,36 @@ meta_backend_x11_select_stage_events (MetaBackend *backend)
  XISetMask (mask.mask, XI_FocusIn);
  XISetMask (mask.mask, XI_FocusOut);
  XISetMask (mask.mask, XI_Motion);
-  XIClearMask (mask.mask, XI_TouchBegin);
-  XIClearMask (mask.mask, XI_TouchEnd);
-  XIClearMask (mask.mask, XI_TouchUpdate);
+
+  if (priv->mode == META_BACKEND_X11_MODE_NESTED)
+    {
+      /* When we're an X11 compositor, we can't take these events or else
+       * replaying events from our passive root window grab will cause
+       * them to come back to us.
+       *
+       * When we're a nested application, we want to behave like any other
+       * application, so select these events like normal apps do.
+       */
+      XISetMask (mask.mask, XI_TouchBegin);
+      XISetMask (mask.mask, XI_TouchEnd);
+      XISetMask (mask.mask, XI_TouchUpdate);
+    }
+
  XISelectEvents (priv->xdisplay, xwin, &mask, 1);
+
+  if (priv->mode == META_BACKEND_X11_MODE_NESTED)
+    {
+      /* We have no way of tracking key changes when the stage doesn't have
+       * focus, so we select for KeymapStateMask so that we get a complete
+       * dump of the keyboard state in a KeymapNotify event that immediately
+       * follows each FocusIn (and EnterNotify, but we ignore that.)
+       */
+      XWindowAttributes xwa;
+
+      XGetWindowAttributes(priv->xdisplay, xwin, &xwa);
+      XSelectInput(priv->xdisplay, xwin,
+                   xwa.your_event_mask | FocusChangeMask | KeymapStateMask);
+    }
 }

 static void
@@ -783,8 +882,15 @@ meta_backend_x11_class_init (MetaBackendX11Class *klass)
 static void
 meta_backend_x11_init (MetaBackendX11 *x11)
 {
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
+
  /* We do X11 event retrieval ourselves */
  clutter_x11_disable_event_retrieval ();
+
+  if (meta_is_wayland_compositor ())
+    priv->mode = META_BACKEND_X11_MODE_NESTED;
+  else
+    priv->mode = META_BACKEND_X11_MODE_COMPOSITOR;
 }

 Display *
--- a/src/backends/x11/meta-barrier-x11.c
+++ b/src/backends/x11/meta-barrier-x11.c
@@ -107,6 +107,7 @@ meta_barrier_impl_x11_new (MetaBarrier *barrier)
  MetaDisplay *display = barrier->priv->display;
  Display *dpy;
  Window root;
+  unsigned int allowed_motion_dirs;

  if (display == NULL)
    {
@@ -121,12 +122,14 @@ meta_barrier_impl_x11_new (MetaBarrier *barrier)
  dpy = display->xdisplay;
  root = DefaultRootWindow (dpy);

+  allowed_motion_dirs =
+    meta_border_get_allows_directions (&barrier->priv->border);
  priv->xbarrier = XFixesCreatePointerBarrier (dpy, root,
-                                               barrier->priv->x1,
-                                               barrier->priv->y1,
-                                               barrier->priv->x2,
-                                               barrier->priv->y2,
-                                               barrier->priv->directions,
+                                               barrier->priv->border.line.a.x,
+                                               barrier->priv->border.line.a.y,
+                                               barrier->priv->border.line.b.x,
+                                               barrier->priv->border.line.b.y,
+                                               allowed_motion_dirs,
                                               0, NULL);

  g_hash_table_insert (display->xids, &priv->xbarrier, barrier);
--- a/src/backends/x11/meta-cursor-renderer-x11.c
+++ b/src/backends/x11/meta-cursor-renderer-x11.c
@@ -40,25 +40,29 @@ typedef struct _MetaCursorRendererX11Private MetaCursorRendererX11Private;
 G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRendererX11, meta_cursor_renderer_x11, META_TYPE_CURSOR_RENDERER);

 static gboolean
-meta_cursor_renderer_x11_update_cursor (MetaCursorRenderer *renderer)
+meta_cursor_renderer_x11_update_cursor (MetaCursorRenderer *renderer,
+                                        MetaCursorSprite   *cursor_sprite)
 {
  MetaCursorRendererX11 *x11 = META_CURSOR_RENDERER_X11 (renderer);
  MetaCursorRendererX11Private *priv = meta_cursor_renderer_x11_get_instance_private (x11);

  MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
  Window xwindow = meta_backend_x11_get_xwindow (backend);
-
-  if (xwindow == None)
-    return FALSE;
-
  Display *xdisplay = meta_backend_x11_get_xdisplay (backend);

-  MetaCursorReference *cursor_ref = meta_cursor_renderer_get_cursor (renderer);
+  if (xwindow == None)
+    {
+      if (cursor_sprite)
+        meta_cursor_sprite_realize_texture (cursor_sprite);
+      return FALSE;
+    }
+
  gboolean has_server_cursor = FALSE;

-  if (cursor_ref)
+  if (cursor_sprite)
    {
-      MetaCursor cursor = meta_cursor_reference_get_meta_cursor (cursor_ref);
+      MetaCursor cursor = meta_cursor_sprite_get_meta_cursor (cursor_sprite);
+
      if (cursor != META_CURSOR_NONE)
        {
          Cursor xcursor = meta_cursor_create_x_cursor (xdisplay, cursor);
@@ -80,6 +84,9 @@ meta_cursor_renderer_x11_update_cursor (MetaCursorRenderer *renderer)
      priv->server_cursor_visible = has_server_cursor;
    }

+  if (!priv->server_cursor_visible && cursor_sprite)
+    meta_cursor_sprite_realize_texture (cursor_sprite);
+
  return priv->server_cursor_visible;
 }

--- a/src/backends/x11/meta-idle-monitor-xsync.c
+++ b/src/backends/x11/meta-idle-monitor-xsync.c
@@ -107,20 +107,6 @@ set_alarm_enabled (Display    *dpy,
  XSyncChangeAlarm (dpy, alarm, XSyncCAEvents, &attr);
 }

-static void
-check_x11_watch (gpointer data,
-                 gpointer user_data)
-{
-  MetaIdleMonitorWatchXSync *watch_xsync = data;
-  MetaIdleMonitorWatch *watch = (MetaIdleMonitorWatch *) watch_xsync;
-  XSyncAlarm alarm = (XSyncAlarm) user_data;
-
-  if (watch_xsync->xalarm != alarm)
-    return;
-
-  _meta_idle_monitor_watch_fire (watch);
-}
-
 static char *
 counter_name_for_device (int device_id)
 {
@@ -327,13 +313,38 @@ meta_idle_monitor_xsync_init (MetaIdleMonitorXSync *monitor_xsync)
  monitor_xsync->alarms = g_hash_table_new (NULL, NULL);
 }

+static void
+check_x11_watches (MetaIdleMonitor *monitor,
+                   XSyncAlarm       alarm)
+{
+  GList *node, *watch_ids;
+
+  /* we get the keys and do explicit look ups in case
+   * an early iteration of the loop ends up leading
+   * to watches from later iterations getting invalidated
+   */
+  watch_ids = g_hash_table_get_keys (monitor->watches);
+
+  for (node = watch_ids; node != NULL; node = node->next)
+    {
+      guint watch_id = GPOINTER_TO_UINT (node->data);
+      MetaIdleMonitorWatchXSync *watch;
+
+      watch = g_hash_table_lookup (monitor->watches, GUINT_TO_POINTER (watch_id));
+
+      if (watch && watch->xalarm == alarm)
+        _meta_idle_monitor_watch_fire ((MetaIdleMonitorWatch *) watch);
+    }
+
+  g_list_free (watch_ids);
+}
+
 void
 meta_idle_monitor_xsync_handle_xevent (MetaIdleMonitor       *monitor,
                                       XSyncAlarmNotifyEvent *alarm_event)
 {
  MetaIdleMonitorXSync *monitor_xsync = META_IDLE_MONITOR_XSYNC (monitor);
  XSyncAlarm alarm;
-  GList *watches;
  gboolean has_alarm;

  if (alarm_event->state != XSyncAlarmActive)
@@ -358,10 +369,5 @@ meta_idle_monitor_xsync_handle_xevent (MetaIdleMonitor       *monitor,
    }

  if (has_alarm)
-    {
-      watches = g_hash_table_get_values (monitor->watches);
-
-      g_list_foreach (watches, check_x11_watch, (gpointer) alarm);
-      g_list_free (watches);
-    }
+    check_x11_watches (monitor, alarm);
 }
--- a/src/backends/x11/meta-input-settings-x11.c
+++ b/src/backends/x11/meta-input-settings-x11.c
@@ -26,6 +26,7 @@
 #include "meta-backend-x11.h"
 #include "meta-input-settings-x11.h"

+#include <string.h>
 #include <gdk/gdkx.h>
 #include <X11/Xatom.h>
 #include <X11/extensions/XInput2.h>
@@ -35,6 +36,41 @@

 G_DEFINE_TYPE (MetaInputSettingsX11, meta_input_settings_x11, META_TYPE_INPUT_SETTINGS)

+static void *
+get_property (ClutterInputDevice *device,
+              const gchar        *property,
+              Atom                type,
+              int                 format,
+              gulong              nitems)
+{
+  MetaBackend *backend = meta_get_backend ();
+  Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
+  gulong nitems_ret, bytes_after_ret;
+  int rc, device_id, format_ret;
+  Atom property_atom, type_ret;
+  guchar *data_ret = NULL;
+
+  property_atom = XInternAtom (xdisplay, property, True);
+  if (!property_atom)
+    return NULL;
+
+  device_id = clutter_input_device_get_device_id (device);
+
+  rc = XIGetProperty (xdisplay, device_id, property_atom,
+                      0, 10, False, type, &type_ret, &format_ret,
+                      &nitems_ret, &bytes_after_ret, &data_ret);
+  if (rc == Success && type_ret == type && format_ret == format && nitems_ret >= nitems)
+    {
+      if (nitems_ret > nitems)
+        g_warning ("Property '%s' for device '%s' returned %lu items, expected %lu",
+                   property, clutter_input_device_get_device_name (device), nitems_ret, nitems);
+      return data_ret;
+    }
+
+  meta_XFree (data_ret);
+  return NULL;
+}
+
 static void
 change_property (ClutterInputDevice *device,
                 const gchar        *property,
@@ -45,23 +81,23 @@ change_property (ClutterInputDevice *device,
 {
  MetaBackend *backend = meta_get_backend ();
  Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
-  gulong nitems_ret, bytes_after_ret;
-  int rc, device_id, format_ret;
-  Atom property_atom, type_ret;
+  int device_id;
+  Atom property_atom;
  guchar *data_ret;

-  property_atom = XInternAtom (xdisplay, property, False);
+  property_atom = XInternAtom (xdisplay, property, True);
+  if (!property_atom)
+    return;
+
  device_id = clutter_input_device_get_device_id (device);

-  rc = XIGetProperty (xdisplay, device_id, property_atom,
-                      0, 0, False, type, &type_ret, &format_ret,
-                      &nitems_ret, &bytes_after_ret, &data_ret);
+  data_ret = get_property (device, property, type, format, nitems);
+  if (!data_ret)
+    return;

+  XIChangeProperty (xdisplay, device_id, property_atom, type,
+                    format, XIPropModeReplace, data, nitems);
  meta_XFree (data_ret);
-
-  if (rc == Success && type_ret == type && format_ret == format)
-    XIChangeProperty (xdisplay, device_id, property_atom, type,
-                      format, XIPropModeReplace, data, nitems);
 }

 static void
@@ -70,6 +106,12 @@ meta_input_settings_x11_set_send_events (MetaInputSettings        *settings,
                                         GDesktopDeviceSendEvents  mode)
 {
  guchar values[2] = { 0 }; /* disabled, disabled-on-external-mouse */
+  guchar *available;
+
+  available = get_property (device, "libinput Send Events Modes Available",
+                            XA_INTEGER, 8, 2);
+  if (!available)
+    return;

  switch (mode)
    {
@@ -83,8 +125,14 @@ meta_input_settings_x11_set_send_events (MetaInputSettings        *settings,
      break;
    }

-  change_property (device, "libinput Send Events Mode Enabled",
-                   XA_INTEGER, 8, &values, 2);
+  if ((values[0] && !available[0]) || (values[1] && !available[1]))
+    g_warning ("Device '%s' does not support sendevents mode %d\n",
+               clutter_input_device_get_device_name (device), mode);
+  else
+    change_property (device, "libinput Send Events Mode Enabled",
+                     XA_INTEGER, 8, &values, 2);
+
+  meta_XFree (available);
 }

 static void
@@ -151,28 +199,35 @@ meta_input_settings_x11_set_invert_scroll (MetaInputSettings  *settings,
 }

 static void
-meta_input_settings_x11_set_scroll_method (MetaInputSettings            *settings,
-                                           ClutterInputDevice           *device,
-                                           GDesktopTouchpadScrollMethod  mode)
+meta_input_settings_x11_set_edge_scroll (MetaInputSettings            *settings,
+                                         ClutterInputDevice           *device,
+                                         gboolean                      edge_scroll_enabled)
 {
  guchar values[3] = { 0 }; /* 2fg, edge, button. The last value is unused */
+  guchar *available;

-  switch (mode)
+  available = get_property (device, "libinput Scroll Methods Available",
+                            XA_INTEGER, 8, 3);
+  if (!available)
+    return;
+
+  if (available[0])
    {
-    case G_DESKTOP_TOUCHPAD_SCROLL_METHOD_DISABLED:
-      break;
-    case G_DESKTOP_TOUCHPAD_SCROLL_METHOD_EDGE_SCROLLING:
-      values[1] = 1;
-      break;
-    case G_DESKTOP_TOUCHPAD_SCROLL_METHOD_TWO_FINGER_SCROLLING:
      values[0] = 1;
-      break;
-    default:
-      g_assert_not_reached ();
+    }
+  else if (available[1] && edge_scroll_enabled)
+    {
+      values[1] = 1;
+    }
+  else
+    {
+      /* Disabled */
    }

  change_property (device, "libinput Scroll Method Enabled",
                   XA_INTEGER, 8, &values, 3);
+
+  meta_XFree (available);
 }

 static void
@@ -180,7 +235,7 @@ meta_input_settings_x11_set_scroll_button (MetaInputSettings  *settings,
                                           ClutterInputDevice *device,
                                           guint               button)
 {
-  change_property (device, "libinput Scroll Method Enabled",
+  change_property (device, "libinput Button Scrolling Button",
                   XA_INTEGER, 32, &button, 1);
 }

@@ -190,16 +245,28 @@ meta_input_settings_x11_set_click_method (MetaInputSettings           *settings,
                                          GDesktopTouchpadClickMethod  mode)
 {
  guchar values[2] = { 0 }; /* buttonareas, clickfinger */
+  guchar *defaults, *available;
+
+  available = get_property (device, "libinput Click Methods Available",
+                            XA_INTEGER, 8, 2);
+  if (!available)
+    return;

  switch (mode)
    {
+    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_DEFAULT:
+      defaults = get_property (device, "libinput Click Method Enabled Default",
+                               XA_INTEGER, 8, 2);
+      if (!defaults)
+        break;
+      memcpy (values, defaults, 2);
+      meta_XFree (defaults);
+      break;
    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_NONE:
      break;
    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_AREAS:
      values[0] = 1;
      break;
-    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_DEFAULT:
-      /* XXX: We can't be much smarter yet, x11 doesn't expose default settings */
    case G_DESKTOP_TOUCHPAD_CLICK_METHOD_FINGERS:
      values[1] = 1;
      break;
@@ -208,8 +275,14 @@ meta_input_settings_x11_set_click_method (MetaInputSettings           *settings,
      return;
  }

-  change_property (device, "libinput Click Method Enabled",
-                   XA_INTEGER, 8, &values, 2);
+  if ((values[0] && !available[0]) || (values[1] && !available[1]))
+    g_warning ("Device '%s' does not support click method %d\n",
+               clutter_input_device_get_device_name (device), mode);
+  else
+    change_property (device, "libinput Click Method Enabled",
+                     XA_INTEGER, 8, &values, 2);
+
+  meta_XFree(available);
 }

 static void
@@ -243,7 +316,7 @@ meta_input_settings_x11_class_init (MetaInputSettingsX11Class *klass)
  input_settings_class->set_left_handed = meta_input_settings_x11_set_left_handed;
  input_settings_class->set_tap_enabled = meta_input_settings_x11_set_tap_enabled;
  input_settings_class->set_invert_scroll = meta_input_settings_x11_set_invert_scroll;
-  input_settings_class->set_scroll_method = meta_input_settings_x11_set_scroll_method;
+  input_settings_class->set_edge_scroll = meta_input_settings_x11_set_edge_scroll;
  input_settings_class->set_scroll_button = meta_input_settings_x11_set_scroll_button;
  input_settings_class->set_click_method = meta_input_settings_x11_set_click_method;
  input_settings_class->set_keyboard_repeat = meta_input_settings_x11_set_keyboard_repeat;
--- a/src/backends/x11/meta-monitor-manager-xrandr.c
+++ b/src/backends/x11/meta-monitor-manager-xrandr.c
@@ -58,6 +58,7 @@ struct _MetaMonitorManagerXrandr
  XRRScreenResources *resources;
  int rr_event_base;
  int rr_error_base;
+  gboolean has_randr15;
 };

 struct _MetaMonitorManagerXrandrClass
@@ -194,11 +195,10 @@ static gboolean
 output_get_boolean_property (MetaMonitorManagerXrandr *manager_xrandr,
                             MetaOutput *output, const char *propname)
 {
-  gboolean value = FALSE;
  Atom atom, actual_type;
  int actual_format;
  unsigned long nitems, bytes_after;
-  unsigned char *buffer;
+  g_autofree unsigned char *buffer = NULL;

  atom = XInternAtom (manager_xrandr->xdisplay, propname, False);
  XRRGetOutputProperty (manager_xrandr->xdisplay,
@@ -209,13 +209,9 @@ output_get_boolean_property (MetaMonitorManagerXrandr *manager_xrandr,
                        &nitems, &bytes_after, &buffer);

  if (actual_type != XA_CARDINAL || actual_format != 32 || nitems < 1)
-    goto out;
+    return FALSE;

-  value = ((int*)buffer)[0];
-
- out:
-  XFree (buffer);
-  return value;
+  return ((int*)buffer)[0];
 }

 static gboolean
@@ -225,6 +221,76 @@ output_get_presentation_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
  return output_get_boolean_property (manager_xrandr, output, "_MUTTER_PRESENTATION_OUTPUT");
 }

+static gboolean
+output_get_underscanning_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
+                                 MetaOutput               *output)
+{
+  Atom atom, actual_type;
+  int actual_format;
+  unsigned long nitems, bytes_after;
+  g_autofree unsigned char *buffer = NULL;
+  g_autofree char *str = NULL;
+
+  atom = XInternAtom (manager_xrandr->xdisplay, "underscan", False);
+  XRRGetOutputProperty (manager_xrandr->xdisplay,
+                        (XID)output->winsys_id,
+                        atom,
+                        0, G_MAXLONG, False, False, XA_ATOM,
+                        &actual_type, &actual_format,
+                        &nitems, &bytes_after, &buffer);
+
+  if (actual_type != XA_ATOM || actual_format != 32 || nitems < 1)
+    return FALSE;
+
+  str = XGetAtomName (manager_xrandr->xdisplay, *(Atom *)buffer);
+  return (strcmp (str, "on") == 0);
+}
+
+static gboolean
+output_get_supports_underscanning_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
+                                          MetaOutput               *output)
+{
+  Atom atom, actual_type;
+  int actual_format, i;
+  unsigned long nitems, bytes_after;
+  g_autofree unsigned char *buffer = NULL;
+  XRRPropertyInfo *property_info;
+  Atom *values;
+  gboolean supports_underscanning = FALSE;
+
+  atom = XInternAtom (manager_xrandr->xdisplay, "underscan", False);
+  XRRGetOutputProperty (manager_xrandr->xdisplay,
+                        (XID)output->winsys_id,
+                        atom,
+                        0, G_MAXLONG, False, False, XA_ATOM,
+                        &actual_type, &actual_format,
+                        &nitems, &bytes_after, &buffer);
+
+  if (actual_type != XA_ATOM || actual_format != 32 || nitems < 1)
+    return FALSE;
+
+  property_info = XRRQueryOutputProperty (manager_xrandr->xdisplay,
+                                          (XID) output->winsys_id,
+                                          atom);
+  values = (Atom *) property_info->values;
+
+  for (i = 0; i < property_info->num_values; i++)
+    {
+      /* The output supports underscanning if "on" is a valid value
+       * for the underscan property.
+       */
+      char *name = XGetAtomName (manager_xrandr->xdisplay, values[i]);
+      if (strcmp (name, "on") == 0)
+        supports_underscanning = TRUE;
+
+      XFree (name);
+    }
+
+  XFree (property_info);
+
+  return supports_underscanning;
+}
+
 static int
 normalize_backlight (MetaOutput *output,
                     int         hw_value)
@@ -241,7 +307,7 @@ output_get_backlight_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
  Atom atom, actual_type;
  int actual_format;
  unsigned long nitems, bytes_after;
-  unsigned char *buffer;
+  g_autofree unsigned char *buffer = NULL;

  atom = XInternAtom (manager_xrandr->xdisplay, "Backlight", False);
  XRRGetOutputProperty (manager_xrandr->xdisplay,
@@ -252,12 +318,9 @@ output_get_backlight_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
                        &nitems, &bytes_after, &buffer);

  if (actual_type != XA_INTEGER || actual_format != 32 || nitems < 1)
-    goto out;
+    return FALSE;

  value = ((int*)buffer)[0];
-
- out:
-  XFree (buffer);
  if (value > 0)
    return normalize_backlight (output, value);
  else
@@ -270,7 +333,7 @@ output_get_backlight_limits_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
 {
  Atom atom;
  xcb_connection_t *xcb_conn;
-  xcb_randr_query_output_property_reply_t *reply;
+  g_autofree xcb_randr_query_output_property_reply_t *reply;

  atom = XInternAtom (manager_xrandr->xdisplay, "Backlight", False);

@@ -288,15 +351,12 @@ output_get_backlight_limits_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
  if (!reply->range || reply->length != 2)
    {
      meta_verbose ("backlight %s was not range\n", output->name);
-      goto out;
+      return;
    }

  int32_t *values = xcb_randr_query_output_property_valid_values (reply);
  output->backlight_min = values[0];
  output->backlight_max = values[1];
-
-out:
-  free (reply);
 }

 static int
@@ -359,12 +419,6 @@ read_output_edid (MetaMonitorManagerXrandr *manager_xrandr,
      result = get_edid_property (manager_xrandr->xdisplay, winsys_id, edid_atom, &len);
    }

-  if (!result)
-    {
-      edid_atom = XInternAtom (manager_xrandr->xdisplay, "XFree86_DDC_EDID1_RAWDATA", FALSE);
-      result = get_edid_property (manager_xrandr->xdisplay, winsys_id, edid_atom, &len);
-    }
-
  if (result)
    {
      if (len > 0 && len % 128 == 0)
@@ -376,6 +430,42 @@ read_output_edid (MetaMonitorManagerXrandr *manager_xrandr,
  return NULL;
 }

+static void
+output_get_tile_info (MetaMonitorManagerXrandr *manager_xrandr,
+                      MetaOutput *output)
+{
+  Atom tile_atom;
+  unsigned char *prop;
+  unsigned long nitems, bytes_after;
+  int actual_format;
+  Atom actual_type;
+
+  if (manager_xrandr->has_randr15 == FALSE)
+    return;
+
+  tile_atom = XInternAtom (manager_xrandr->xdisplay, "TILE", FALSE);
+  XRRGetOutputProperty (manager_xrandr->xdisplay,
+                        output->winsys_id,
+                        tile_atom, 0, 100, False,
+                        False, AnyPropertyType,
+                        &actual_type, &actual_format,
+                        &nitems, &bytes_after, &prop);
+
+  if (actual_type == XA_INTEGER && actual_format == 32 && nitems == 8)
+    {
+      long *values = (long *)prop;
+      output->tile_info.group_id = values[0];
+      output->tile_info.flags = values[1];
+      output->tile_info.max_h_tiles = values[2];
+      output->tile_info.max_v_tiles = values[3];
+      output->tile_info.loc_h_tile = values[4];
+      output->tile_info.loc_v_tile = values[5];
+      output->tile_info.tile_w = values[6];
+      output->tile_info.tile_h = values[7];
+    }
+  XFree (prop);
+}
+
 static gboolean
 output_get_hotplug_mode_update (MetaMonitorManagerXrandr *manager_xrandr,
                                MetaOutput               *output)
@@ -447,11 +537,10 @@ static MetaConnectorType
 output_get_connector_type_from_prop (MetaMonitorManagerXrandr *manager_xrandr,
                                     MetaOutput               *output)
 {
-  MetaConnectorType ret = META_CONNECTOR_TYPE_Unknown;
  Atom atom, actual_type, connector_type_atom;
  int actual_format;
  unsigned long nitems, bytes_after;
-  unsigned char *buffer;
+  g_autofree unsigned char *buffer = NULL;

  atom = XInternAtom (manager_xrandr->xdisplay, "ConnectorType", False);
  XRRGetOutputProperty (manager_xrandr->xdisplay,
@@ -462,14 +551,10 @@ output_get_connector_type_from_prop (MetaMonitorManagerXrandr *manager_xrandr,
                        &nitems, &bytes_after, &buffer);

  if (actual_type != XA_ATOM || actual_format != 32 || nitems < 1)
-    goto out;
+    return META_CONNECTOR_TYPE_Unknown;

  connector_type_atom = ((Atom *) buffer)[0];
-  ret = connector_type_from_atom (manager_xrandr, connector_type_atom);
-
- out:
-  meta_XFree (buffer);
-  return ret;
+  return connector_type_from_atom (manager_xrandr, connector_type_atom);
 }

 static MetaConnectorType
@@ -506,7 +591,7 @@ output_get_connector_type_from_name (MetaMonitorManagerXrandr *manager_xrandr,
  if (g_str_has_prefix (name, "Virtual"))
    return META_CONNECTOR_TYPE_VIRTUAL;
  if (g_str_has_prefix (name, "Composite"))
-    return META_CONNECTOR_TYPE_VGA;
+    return META_CONNECTOR_TYPE_Composite;
  if (g_str_has_prefix (name, "S-video"))
    return META_CONNECTOR_TYPE_SVIDEO;
  if (g_str_has_prefix (name, "TV"))
@@ -546,6 +631,70 @@ output_get_connector_type (MetaMonitorManagerXrandr *manager_xrandr,
  return META_CONNECTOR_TYPE_Unknown;
 }

+static void
+output_get_modes (MetaMonitorManager *manager,
+                  MetaOutput         *meta_output,
+                  XRROutputInfo      *output)
+{
+  guint j, k;
+  guint n_actual_modes;
+
+  meta_output->modes = g_new0 (MetaMonitorMode *, output->nmode);
+
+  n_actual_modes = 0;
+  for (j = 0; j < (guint)output->nmode; j++)
+    {
+      for (k = 0; k < manager->n_modes; k++)
+        {
+          if (output->modes[j] == (XID)manager->modes[k].mode_id)
+            {
+              meta_output->modes[n_actual_modes] = &manager->modes[k];
+              n_actual_modes += 1;
+              break;
+            }
+        }
+    }
+  meta_output->n_modes = n_actual_modes;
+  if (n_actual_modes > 0)
+    meta_output->preferred_mode = meta_output->modes[0];
+}
+
+static void
+output_get_crtcs (MetaMonitorManager *manager,
+                  MetaOutput         *meta_output,
+                  XRROutputInfo      *output)
+{
+  guint j, k;
+  guint n_actual_crtcs;
+
+  meta_output->possible_crtcs = g_new0 (MetaCRTC *, output->ncrtc);
+
+  n_actual_crtcs = 0;
+  for (j = 0; j < (unsigned)output->ncrtc; j++)
+    {
+      for (k = 0; k < manager->n_crtcs; k++)
+        {
+          if ((XID)manager->crtcs[k].crtc_id == output->crtcs[j])
+            {
+              meta_output->possible_crtcs[n_actual_crtcs] = &manager->crtcs[k];
+              n_actual_crtcs += 1;
+              break;
+            }
+        }
+    }
+  meta_output->n_possible_crtcs = n_actual_crtcs;
+
+  meta_output->crtc = NULL;
+  for (j = 0; j < manager->n_crtcs; j++)
+    {
+      if ((XID)manager->crtcs[j].crtc_id == output->crtc)
+        {
+          meta_output->crtc = &manager->crtcs[j];
+          break;
+        }
+    }
+}
+
 static char *
 get_xmode_name (XRRModeInfo *xmode)
 {
@@ -682,6 +831,8 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
      MetaOutput *meta_output;

      output = XRRGetOutputInfo (manager_xrandr->xdisplay, resources, resources->outputs[i]);
+      if (!output)
+        continue;

      meta_output = &manager->outputs[n_actual_outputs];

@@ -704,44 +855,9 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
 	  meta_output->suggested_y = output_get_suggested_y (manager_xrandr, meta_output);
          meta_output->connector_type = output_get_connector_type (manager_xrandr, meta_output);

-	  meta_output->n_modes = output->nmode;
-	  meta_output->modes = g_new0 (MetaMonitorMode *, meta_output->n_modes);
-	  for (j = 0; j < meta_output->n_modes; j++)
-	    {
-	      for (k = 0; k < manager->n_modes; k++)
-		{
-		  if (output->modes[j] == (XID)manager->modes[k].mode_id)
-		    {
-		      meta_output->modes[j] = &manager->modes[k];
-		      break;
-		    }
-		}
-	    }
-	  meta_output->preferred_mode = meta_output->modes[0];
-
-	  meta_output->n_possible_crtcs = output->ncrtc;
-	  meta_output->possible_crtcs = g_new0 (MetaCRTC *, meta_output->n_possible_crtcs);
-	  for (j = 0; j < (unsigned)output->ncrtc; j++)
-	    {
-	      for (k = 0; k < manager->n_crtcs; k++)
-		{
-		  if ((XID)manager->crtcs[k].crtc_id == output->crtcs[j])
-		    {
-		      meta_output->possible_crtcs[j] = &manager->crtcs[k];
-		      break;
-		    }
-		}
-	    }
-
-	  meta_output->crtc = NULL;
-	  for (j = 0; j < manager->n_crtcs; j++)
-	    {
-	      if ((XID)manager->crtcs[j].crtc_id == output->crtc)
-		{
-		  meta_output->crtc = &manager->crtcs[j];
-		  break;
-		}
-	    }
+	  output_get_tile_info (manager_xrandr, meta_output);
+	  output_get_modes (manager, meta_output, output);
+          output_get_crtcs (manager, meta_output, output);

 	  meta_output->n_possible_clones = output->nclone;
 	  meta_output->possible_clones = g_new0 (MetaOutput *, meta_output->n_possible_clones);
@@ -756,6 +872,8 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)

 	  meta_output->is_primary = ((XID)meta_output->winsys_id == primary_output);
 	  meta_output->is_presentation = output_get_presentation_xrandr (manager_xrandr, meta_output);
+	  meta_output->is_underscanning = output_get_underscanning_xrandr (manager_xrandr, meta_output);
+          meta_output->supports_underscanning = output_get_supports_underscanning_xrandr (manager_xrandr, meta_output);
 	  output_get_backlight_limits_xrandr (manager_xrandr, meta_output);

 	  if (!(meta_output->backlight_min == 0 && meta_output->backlight_max == 0))
@@ -763,7 +881,10 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
 	  else
 	    meta_output->backlight = -1;

-	  n_actual_outputs++;
+          if (meta_output->n_modes == 0 || meta_output->n_possible_crtcs == 0)
+            meta_monitor_manager_clear_output (meta_output);
+          else
+            n_actual_outputs++;
 	}

      XRRFreeOutputInfo (output);
@@ -869,11 +990,58 @@ output_set_presentation_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
  int value = presentation;

  atom = XInternAtom (manager_xrandr->xdisplay, "_MUTTER_PRESENTATION_OUTPUT", False);
-  XRRChangeOutputProperty (manager_xrandr->xdisplay,
-                           (XID)output->winsys_id,
-                           atom,
-                           XA_CARDINAL, 32, PropModeReplace,
-                           (unsigned char*) &value, 1);
+
+  xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                    (XID)output->winsys_id,
+                                    atom, XCB_ATOM_CARDINAL, 32,
+                                    XCB_PROP_MODE_REPLACE,
+                                    1, &value);
+}
+
+static void
+output_set_underscanning_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
+                                 MetaOutput               *output,
+                                 gboolean                  underscanning)
+{
+  Atom prop, valueatom;
+  const char *value;
+
+  prop = XInternAtom (manager_xrandr->xdisplay, "underscan", False);
+
+  value = underscanning ? "on" : "off";
+  valueatom = XInternAtom (manager_xrandr->xdisplay, value, False);
+
+  xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                    (XID)output->winsys_id,
+                                    prop, XCB_ATOM_ATOM, 32,
+                                    XCB_PROP_MODE_REPLACE,
+                                    1, &valueatom);
+
+  /* Configure the border at the same time. Currently, we use a
+   * 5% of the width/height of the mode. In the future, we should
+   * make the border configurable. */
+  if (underscanning)
+    {
+      uint32_t border_value;
+
+      prop = XInternAtom (manager_xrandr->xdisplay, "underscan hborder", False);
+      border_value = output->crtc->current_mode->width * 0.05;
+
+      xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                        (XID)output->winsys_id,
+                                        prop, XCB_ATOM_INTEGER, 32,
+                                        XCB_PROP_MODE_REPLACE,
+                                        1, &border_value);
+
+      prop = XInternAtom (manager_xrandr->xdisplay, "underscan vborder", False);
+      border_value = output->crtc->current_mode->height * 0.05;
+
+      xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                        (XID)output->winsys_id,
+                                        prop, XCB_ATOM_INTEGER, 32,
+                                        XCB_PROP_MODE_REPLACE,
+                                        1, &border_value);
+    }
 }

 static void
@@ -992,17 +1160,16 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
      if (crtc_info->mode != NULL)
        {
          MetaMonitorMode *mode;
-          XID *outputs;
-          unsigned int j, n_outputs;
-          int width, height;
+          g_autofree XID *output_ids = NULL;
+          unsigned int j, n_output_ids;
          Status ok;

          mode = crtc_info->mode;

-          n_outputs = crtc_info->outputs->len;
-          outputs = g_new (XID, n_outputs);
+          n_output_ids = crtc_info->outputs->len;
+          output_ids = g_new (XID, n_output_ids);

-          for (j = 0; j < n_outputs; j++)
+          for (j = 0; j < n_output_ids; j++)
            {
              MetaOutput *output;

@@ -1011,7 +1178,7 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
              output->is_dirty = TRUE;
              output->crtc = crtc;

-              outputs[j] = output->winsys_id;
+              output_ids[j] = output->winsys_id;
            }

          ok = XRRSetCrtcConfig (manager_xrandr->xdisplay,
@@ -1021,7 +1188,7 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
                                 crtc_info->x, crtc_info->y,
                                 (XID)mode->mode_id,
                                 meta_monitor_transform_to_xrandr (crtc_info->transform),
-                                 outputs, n_outputs);
+                                 output_ids, n_output_ids);

          if (ok != Success)
            {
@@ -1029,7 +1196,7 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
                            (unsigned)(crtc->crtc_id), (unsigned)(mode->mode_id),
                            mode->width, mode->height, (float)mode->refresh_rate,
                            crtc_info->x, crtc_info->y, crtc_info->transform);
-              goto next;
+              continue;
            }

          if (meta_monitor_transform_is_rotated (crtc_info->transform))
@@ -1049,9 +1216,6 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
          crtc->rect.height = height;
          crtc->current_mode = mode;
          crtc->transform = crtc_info->transform;
-
-        next:
-          g_free (outputs);
        }
    }

@@ -1071,8 +1235,14 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
                                      output_info->output,
                                      output_info->is_presentation);

+      if (output_get_supports_underscanning_xrandr (manager_xrandr, output_info->output))
+        output_set_underscanning_xrandr (manager_xrandr,
+                                         output_info->output,
+                                         output_info->is_underscanning);
+
      output->is_primary = output_info->is_primary;
      output->is_presentation = output_info->is_presentation;
+      output->is_underscanning = output_info->is_underscanning;
    }

  /* Disable outputs not mentioned in the list */
@@ -1106,11 +1276,12 @@ meta_monitor_manager_xrandr_change_backlight (MetaMonitorManager *manager,
  hw_value = round ((double)value / 100.0 * output->backlight_max + output->backlight_min);

  atom = XInternAtom (manager_xrandr->xdisplay, "Backlight", False);
-  XRRChangeOutputProperty (manager_xrandr->xdisplay,
-                           (XID)output->winsys_id,
-                           atom,
-                           XA_INTEGER, 32, PropModeReplace,
-                           (unsigned char *) &hw_value, 1);
+
+  xcb_randr_change_output_property (XGetXCBConnection (manager_xrandr->xdisplay),
+                                    (XID)output->winsys_id,
+                                    atom, XCB_ATOM_INTEGER, 32,
+                                    XCB_PROP_MODE_REPLACE,
+                                    1, &hw_value);

  /* We're not selecting for property notifies, so update the value immediately */
  output->backlight = normalize_backlight (output, hw_value);
@@ -1158,6 +1329,88 @@ meta_monitor_manager_xrandr_set_crtc_gamma (MetaMonitorManager *manager,
  XRRFreeGamma (gamma);
 }

+#ifdef HAVE_XRANDR15
+static void
+meta_monitor_manager_xrandr_add_monitor(MetaMonitorManager *manager,
+                                        MetaMonitorInfo *monitor)
+{
+  MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
+  XRRMonitorInfo *m;
+  int o;
+  Atom name;
+  char name_buf[40];
+
+  if (manager_xrandr->has_randr15 == FALSE)
+    return;
+
+  if (monitor->n_outputs <= 1)
+    return;
+
+  if (monitor->outputs[0]->product)
+    snprintf (name_buf, 40, "%s-%d", monitor->outputs[0]->product, monitor->outputs[0]->tile_info.group_id);
+  else
+    snprintf (name_buf, 40, "Tiled-%d", monitor->outputs[0]->tile_info.group_id);
+
+  name = XInternAtom (manager_xrandr->xdisplay, name_buf, False);
+  monitor->monitor_winsys_xid = name;
+  m = XRRAllocateMonitor (manager_xrandr->xdisplay, monitor->n_outputs);
+  if (!m)
+    return;
+  m->name = name;
+  m->primary = monitor->is_primary;
+  m->automatic = True;
+
+  for (o = 0; o < monitor->n_outputs; o++) {
+    MetaOutput *output = monitor->outputs[o];
+    m->outputs[o] = output->winsys_id;
+  }
+  XRRSetMonitor (manager_xrandr->xdisplay,
+                 DefaultRootWindow (manager_xrandr->xdisplay),
+                 m);
+  XRRFreeMonitors (m);
+}
+
+static void
+meta_monitor_manager_xrandr_delete_monitor(MetaMonitorManager *manager,
+                                           int monitor_winsys_xid)
+{
+  MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
+
+  if (manager_xrandr->has_randr15 == FALSE)
+    return;
+  XRRDeleteMonitor (manager_xrandr->xdisplay,
+                    DefaultRootWindow (manager_xrandr->xdisplay),
+                    monitor_winsys_xid);
+}
+
+static void
+meta_monitor_manager_xrandr_init_monitors(MetaMonitorManagerXrandr *manager_xrandr)
+{
+  XRRMonitorInfo *m;
+  int n, i;
+
+  if (manager_xrandr->has_randr15 == FALSE)
+    return;
+
+  /* delete any tiled monitors setup, as mutter will want to recreate
+     things in its image */
+  m = XRRGetMonitors (manager_xrandr->xdisplay,
+                      DefaultRootWindow (manager_xrandr->xdisplay),
+                      FALSE, &n);
+  if (n == -1)
+    return;
+
+  for (i = 0; i < n; i++)
+    {
+      if (m[i].noutput > 1)
+        XRRDeleteMonitor (manager_xrandr->xdisplay,
+                          DefaultRootWindow (manager_xrandr->xdisplay),
+                          m[i].name);
+    }
+  XRRFreeMonitors (m);
+}
+#endif
+
 static void
 meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr)
 {
@@ -1173,6 +1426,7 @@ meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr)
    }
  else
    {
+      int major_version, minor_version;
      /* We only use ScreenChangeNotify, but GDK uses the others,
 	 and we don't want to step on its toes */
      XRRSelectInput (manager_xrandr->xdisplay,
@@ -1180,6 +1434,17 @@ meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr)
 		      RRScreenChangeNotifyMask
 		      | RRCrtcChangeNotifyMask
 		      | RROutputPropertyNotifyMask);
+
+      manager_xrandr->has_randr15 = FALSE;
+      XRRQueryVersion (manager_xrandr->xdisplay, &major_version,
+                       &minor_version);
+#ifdef HAVE_XRANDR15
+      if (major_version > 1 ||
+          (major_version == 1 &&
+           minor_version >= 5))
+        manager_xrandr->has_randr15 = TRUE;
+      meta_monitor_manager_xrandr_init_monitors (manager_xrandr);
+#endif
    }
 }

@@ -1210,6 +1475,10 @@ meta_monitor_manager_xrandr_class_init (MetaMonitorManagerXrandrClass *klass)
  manager_class->change_backlight = meta_monitor_manager_xrandr_change_backlight;
  manager_class->get_crtc_gamma = meta_monitor_manager_xrandr_get_crtc_gamma;
  manager_class->set_crtc_gamma = meta_monitor_manager_xrandr_set_crtc_gamma;
+#ifdef HAVE_XRANDR15
+  manager_class->add_monitor = meta_monitor_manager_xrandr_add_monitor;
+  manager_class->delete_monitor = meta_monitor_manager_xrandr_delete_monitor;
+#endif
 }

 gboolean
--- a/src/backends/x11/nested/meta-cursor-renderer-x11-nested.c
+++ b/src/backends/x11/nested/meta-cursor-renderer-x11-nested.c
@@ -0,0 +1,89 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#include "config.h"
+
+#include "backends/x11/nested/meta-cursor-renderer-x11-nested.h"
+
+#include "backends/x11/meta-backend-x11.h"
+
+struct _MetaCursorRendererX11Nested
+{
+  MetaCursorRenderer parent;
+};
+
+G_DEFINE_TYPE (MetaCursorRendererX11Nested, meta_cursor_renderer_x11_nested,
+               META_TYPE_CURSOR_RENDERER);
+
+static gboolean
+meta_cursor_renderer_x11_nested_update_cursor (MetaCursorRenderer *renderer,
+                                               MetaCursorSprite   *cursor_sprite)
+{
+  if (cursor_sprite)
+    meta_cursor_sprite_realize_texture (cursor_sprite);
+  return FALSE;
+}
+
+static Cursor
+create_empty_cursor (Display *xdisplay)
+{
+  XcursorImage *image;
+  XcursorPixel *pixels;
+  Cursor xcursor;
+
+  image = XcursorImageCreate (1, 1);
+  if (image == NULL)
+    return None;
+
+  image->xhot = 0;
+  image->yhot = 0;
+
+  pixels = image->pixels;
+  pixels[0] = 0;
+
+  xcursor = XcursorImageLoadCursor (xdisplay, image);
+  XcursorImageDestroy (image);
+
+  return xcursor;
+}
+
+static void
+meta_cursor_renderer_x11_nested_init (MetaCursorRendererX11Nested *x11_nested)
+{
+  MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
+  Window xwindow = meta_backend_x11_get_xwindow (backend);
+  Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
+
+  Cursor empty_xcursor = create_empty_cursor (xdisplay);
+  XDefineCursor (xdisplay, xwindow, empty_xcursor);
+  XFreeCursor (xdisplay, empty_xcursor);
+}
+
+static void
+meta_cursor_renderer_x11_nested_class_init (MetaCursorRendererX11NestedClass *klass)
+{
+  MetaCursorRendererClass *renderer_class = META_CURSOR_RENDERER_CLASS (klass);
+
+  renderer_class->update_cursor = meta_cursor_renderer_x11_nested_update_cursor;
+}
--- a/src/backends/x11/nested/meta-cursor-renderer-x11-nested.h
+++ b/src/backends/x11/nested/meta-cursor-renderer-x11-nested.h
@@ -0,0 +1,38 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#ifndef META_CURSOR_RENDERER_X11_NESTED_NESTED_H
+#define META_CURSOR_RENDERER_X11_NESTED_NESTED_H
+
+#include <glib-object.h>
+
+#include "backends/meta-cursor-renderer.h"
+
+#define META_TYPE_CURSOR_RENDERER_X11_NESTED (meta_cursor_renderer_x11_nested_get_type ())
+G_DECLARE_FINAL_TYPE (MetaCursorRendererX11Nested,
+                      meta_cursor_renderer_x11_nested,
+                      META, CURSOR_RENDERER_X11_NESTED,
+                      MetaCursorRenderer);
+
+#endif /* META_CURSOR_RENDERER_X11_NESTED_NESTED_H */
--- a/src/compositor/compositor-private.h
+++ b/src/compositor/compositor-private.h
@@ -15,7 +15,8 @@ struct _MetaCompositor
 {
  MetaDisplay    *display;

-  guint           repaint_func_id;
+  guint           pre_paint_func_id;
+  guint           post_paint_func_id;

  gint64          server_time_query_time;
  gint64          server_time_offset;
@@ -40,6 +41,7 @@ struct _MetaCompositor
  MetaPluginManager *plugin_mgr;

  gboolean frame_has_updated_xsurfaces;
+  gboolean have_x11_sync_object;
 };

 /* Wait 2ms after vblank before starting to draw next frame */
--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -37,11 +37,6 @@
 * compositor needs to delay hiding the windows until the switch
 * workspace animation completes.
 *
- * meta_compositor_maximize_window() and meta_compositor_unmaximize_window()
- * are transitions within the visible state. The window is resized __before__
- * the call, so it may be necessary to readjust the display based on the
- * old_rect to start the animation.
- *
 * # Containers #
 *
 * There's two containers in the stage that are used to place window actors, here
@@ -79,6 +74,7 @@
 #include "frame.h"
 #include <X11/extensions/shape.h>
 #include <X11/extensions/Xcomposite.h>
+#include "meta-sync-ring.h"

 #include "backends/x11/meta-backend-x11.h"

@@ -125,7 +121,11 @@ meta_switch_workspace_completed (MetaCompositor *compositor)
 void
 meta_compositor_destroy (MetaCompositor *compositor)
 {
-  clutter_threads_remove_repaint_func (compositor->repaint_func_id);
+  clutter_threads_remove_repaint_func (compositor->pre_paint_func_id);
+  clutter_threads_remove_repaint_func (compositor->post_paint_func_id);
+
+  if (compositor->have_x11_sync_object)
+    meta_sync_ring_destroy ();
 }

 static void
@@ -468,13 +468,11 @@ meta_compositor_manage (MetaCompositor *compositor)
  MetaDisplay *display = compositor->display;
  Display *xdisplay = display->xdisplay;
  MetaScreen *screen = display->screen;
+  MetaBackend *backend = meta_get_backend ();

  meta_screen_set_cm_selection (display->screen);

-  {
-    MetaBackend *backend = meta_get_backend ();
-    compositor->stage = meta_backend_get_stage (backend);
-  }
+  compositor->stage = meta_backend_get_stage (backend);

  /* We use connect_after() here to accomodate code in GNOME Shell that,
   * when benchmarking drawing performance, connects to ::after-paint
@@ -510,7 +508,7 @@ meta_compositor_manage (MetaCompositor *compositor)

      compositor->output = screen->composite_overlay_window;

-      xwin = meta_backend_x11_get_xwindow (META_BACKEND_X11 (meta_get_backend ()));
+      xwin = meta_backend_x11_get_xwindow (META_BACKEND_X11 (backend));

      XReparentWindow (xdisplay, xwin, compositor->output, 0, 0);

@@ -530,6 +528,8 @@ meta_compositor_manage (MetaCompositor *compositor)
       * contents until we show the stage.
       */
      XMapWindow (xdisplay, compositor->output);
+
+      compositor->have_x11_sync_object = meta_sync_ring_init (xdisplay);
    }

  redirect_windows (display->screen);
@@ -731,6 +731,9 @@ meta_compositor_process_event (MetaCompositor *compositor,
        process_damage (compositor, (XDamageNotifyEvent *) event, window);
    }

+  if (compositor->have_x11_sync_object)
+    meta_sync_ring_handle_event (event);
+
  /* Clutter needs to know about MapNotify events otherwise it will
     think the stage is invisible */
  if (!meta_is_wayland_compositor () && event->type == MapNotify)
@@ -769,23 +772,14 @@ meta_compositor_hide_window (MetaCompositor *compositor,
 }

 void
-meta_compositor_maximize_window (MetaCompositor    *compositor,
-                                 MetaWindow        *window,
-				 MetaRectangle	   *old_rect,
-				 MetaRectangle	   *new_rect)
+meta_compositor_size_change_window (MetaCompositor    *compositor,
+                                    MetaWindow        *window,
+                                    MetaSizeChange     which_change,
+                                    MetaRectangle     *old_frame_rect,
+                                    MetaRectangle     *old_buffer_rect)
 {
  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  meta_window_actor_maximize (window_actor, old_rect, new_rect);
-}
-
-void
-meta_compositor_unmaximize_window (MetaCompositor    *compositor,
-                                   MetaWindow        *window,
-				   MetaRectangle     *old_rect,
-				   MetaRectangle     *new_rect)
-{
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  meta_window_actor_unmaximize (window_actor, old_rect, new_rect);
+  meta_window_actor_size_change (window_actor, which_change, old_frame_rect, old_buffer_rect);
 }

 void
@@ -1044,11 +1038,12 @@ frame_callback (CoglOnscreen  *onscreen,
    }
 }

-static void
-pre_paint_windows (MetaCompositor *compositor)
+static gboolean
+meta_pre_paint_func (gpointer data)
 {
  GList *l;
  MetaWindowActor *top_window;
+  MetaCompositor *compositor = data;

  if (compositor->onscreen == NULL)
    {
@@ -1060,7 +1055,7 @@ pre_paint_windows (MetaCompositor *compositor)
    }

  if (compositor->windows == NULL)
-    return;
+    return TRUE;

  top_window = g_list_last (compositor->windows)->data;

@@ -1077,10 +1072,12 @@ pre_paint_windows (MetaCompositor *compositor)
    {
      /* We need to make sure that any X drawing that happens before
       * the XDamageSubtract() for each window above is visible to
-       * subsequent GL rendering; the only standardized way to do this
-       * is EXT_x11_sync_object, which isn't yet widely available. For
-       * now, we count on details of Xorg and the open source drivers,
-       * and hope for the best otherwise.
+       * subsequent GL rendering; the standardized way to do this is
+       * GL_EXT_X11_sync_object. Since this isn't implemented yet in
+       * mesa, we also have a path that relies on the implementation
+       * of the open source drivers.
+       *
+       * Anything else, we just hope for the best.
       *
       * Xorg and open source driver specifics:
       *
@@ -1095,17 +1092,28 @@ pre_paint_windows (MetaCompositor *compositor)
       * round trip request at this point is sufficient to flush the
       * GLX buffers.
       */
-      XSync (compositor->display->xdisplay, False);
-
-      compositor->frame_has_updated_xsurfaces = FALSE;
+      if (compositor->have_x11_sync_object)
+        compositor->have_x11_sync_object = meta_sync_ring_insert_wait ();
+      else
+        XSync (compositor->display->xdisplay, False);
    }
+
+  return TRUE;
 }

 static gboolean
-meta_repaint_func (gpointer data)
+meta_post_paint_func (gpointer data)
 {
  MetaCompositor *compositor = data;
-  pre_paint_windows (compositor);
+
+  if (compositor->frame_has_updated_xsurfaces)
+    {
+      if (compositor->have_x11_sync_object)
+        compositor->have_x11_sync_object = meta_sync_ring_after_frame ();
+
+      compositor->frame_has_updated_xsurfaces = FALSE;
+    }
+
  return TRUE;
 }

@@ -1140,10 +1148,16 @@ meta_compositor_new (MetaDisplay *display)
                    G_CALLBACK (on_shadow_factory_changed),
                    compositor);

-  compositor->repaint_func_id = clutter_threads_add_repaint_func (meta_repaint_func,
-                                                                  compositor,
-                                                                  NULL);
-
+  compositor->pre_paint_func_id =
+    clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_PRE_PAINT,
+                                           meta_pre_paint_func,
+                                           compositor,
+                                           NULL);
+  compositor->post_paint_func_id =
+    clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_POST_PAINT,
+                                           meta_post_paint_func,
+                                           compositor,
+                                           NULL);
  return compositor;
 }

--- a/src/compositor/meta-background.c
+++ b/src/compositor/meta-background.c
@@ -22,6 +22,8 @@
 #include "meta-background-private.h"
 #include "cogl-utils.h"

+#include <string.h>
+
 enum
 {
  CHANGED,
@@ -71,6 +73,8 @@ enum

 G_DEFINE_TYPE (MetaBackground, meta_background, G_TYPE_OBJECT)

+static gboolean texture_has_alpha (CoglTexture *texture);
+
 static GSList *all_backgrounds = NULL;

 static void
@@ -474,7 +478,7 @@ get_texture_area (MetaBackground          *self,
    }
 }

-static void
+static gboolean
 draw_texture (MetaBackground        *self,
              CoglFramebuffer       *framebuffer,
              CoglPipeline          *pipeline,
@@ -483,6 +487,7 @@ draw_texture (MetaBackground        *self,
 {
  MetaBackgroundPrivate *priv = self->priv;
  cairo_rectangle_int_t texture_area;
+  gboolean bare_region_visible;

  get_texture_area (self, monitor_area, texture, &texture_area);

@@ -503,6 +508,9 @@ draw_texture (MetaBackground        *self,
                                                - texture_area.y / (float)texture_area.height,
                                                (monitor_area->width - texture_area.x) / (float)texture_area.width,
                                                (monitor_area->height - texture_area.y) / (float)texture_area.height);
+
+      bare_region_visible = texture_has_alpha (texture);
+
      /* Draw just the texture */
      break;
    case G_DESKTOP_BACKGROUND_STYLE_CENTERED:
@@ -513,11 +521,16 @@ draw_texture (MetaBackground        *self,
                                                texture_area.x + texture_area.width,
                                                texture_area.y + texture_area.height,
                                                0, 0, 1.0, 1.0);
+      bare_region_visible = texture_has_alpha (texture) || memcmp (&texture_area, monitor_area, sizeof (cairo_rectangle_int_t)) != 0;
+      break;
    case G_DESKTOP_BACKGROUND_STYLE_NONE:
+      bare_region_visible = TRUE;
      break;
    default:
-      g_return_if_reached();
+      g_return_val_if_reached(FALSE);
    }
+
+  return bare_region_visible;
 }

 static void
@@ -748,6 +761,7 @@ meta_background_get_texture (MetaBackground         *self,
  if (monitor->dirty)
    {
      CoglError *catch_error = NULL;
+      gboolean bare_region_visible = FALSE;

      if (monitor->texture == NULL)
        {
@@ -783,9 +797,9 @@ meta_background_get_texture (MetaBackground         *self,
          cogl_pipeline_set_layer_texture (pipeline, 0, texture2);
          cogl_pipeline_set_layer_wrap_mode (pipeline, 0, get_wrap_mode (priv->style));

-          draw_texture (self,
-                        monitor->fbo, pipeline,
-                        texture2, &monitor_area);
+          bare_region_visible = draw_texture (self,
+                                              monitor->fbo, pipeline,
+                                              texture2, &monitor_area);

          cogl_object_unref (pipeline);
        }
@@ -796,8 +810,7 @@ meta_background_get_texture (MetaBackground         *self,
                                    0.0, 0.0, 0.0, 0.0);
        }

-      if (texture1 != NULL &&
-          !(texture2 != NULL && priv->blend_factor == 1.0 && !texture_has_alpha (texture2)))
+      if (texture1 != NULL && priv->blend_factor != 1.0)
        {
          CoglPipeline *pipeline = create_pipeline (PIPELINE_ADD);
          cogl_pipeline_set_color4f (pipeline,
@@ -808,15 +821,14 @@ meta_background_get_texture (MetaBackground         *self,
          cogl_pipeline_set_layer_texture (pipeline, 0, texture1);
          cogl_pipeline_set_layer_wrap_mode (pipeline, 0, get_wrap_mode (priv->style));

-          draw_texture (self,
-                        monitor->fbo, pipeline,
-                        texture1, &monitor_area);
+          bare_region_visible = bare_region_visible || draw_texture (self,
+                                                                     monitor->fbo, pipeline,
+                                                                     texture1, &monitor_area);

          cogl_object_unref (pipeline);
        }

-      if (!((texture2 != NULL && priv->blend_factor == 1.0 && !texture_has_alpha (texture2)) ||
-            (texture1 != NULL && !texture_has_alpha (texture1))))
+      if (bare_region_visible)
        {
          CoglPipeline *pipeline = create_pipeline (PIPELINE_OVER_REVERSE);

--- a/src/compositor/meta-feedback-actor.c
+++ b/src/compositor/meta-feedback-actor.c
@@ -187,7 +187,7 @@ meta_feedback_actor_set_anchor (MetaFeedbackActor *self,
  if (priv->anchor_x == anchor_x && priv->anchor_y == anchor_y)
    return;

-  if (priv->anchor_x != anchor_y)
+  if (priv->anchor_x != anchor_x)
    {
      priv->anchor_x = anchor_x;
      g_object_notify (G_OBJECT (self), "anchor-x");
--- a/src/compositor/meta-plugin-manager.c
+++ b/src/compositor/meta-plugin-manager.c
@@ -149,7 +149,7 @@ meta_plugin_manager_kill_switch_workspace (MetaPluginManager *plugin_mgr)
 gboolean
 meta_plugin_manager_event_simple (MetaPluginManager *plugin_mgr,
                                  MetaWindowActor   *actor,
-                                  unsigned long      event)
+                                  MetaPluginEffect   event)
 {
  MetaPlugin *plugin = plugin_mgr->plugin;
  MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
@@ -196,67 +196,32 @@ meta_plugin_manager_event_simple (MetaPluginManager *plugin_mgr,
        }
      break;
    default:
-      g_warning ("Incorrect handler called for event %lu", event);
+      g_warning ("Incorrect handler called for event %d", event);
    }

  return retval;
 }

-/*
- * The public method that the compositor hooks into for maximize and unmaximize
- * events.
- *
- * Returns TRUE if the plugin handled the event type (i.e.,
- * if the return value is FALSE, there will be no subsequent call to the
- * manager completed() callback, and the compositor must ensure that any
- * appropriate post-effect cleanup is carried out.
- */
 gboolean
-meta_plugin_manager_event_maximize (MetaPluginManager *plugin_mgr,
-                                    MetaWindowActor   *actor,
-                                    unsigned long      event,
-                                    gint               target_x,
-                                    gint               target_y,
-                                    gint               target_width,
-                                    gint               target_height)
+meta_plugin_manager_event_size_change (MetaPluginManager *plugin_mgr,
+                                       MetaWindowActor   *actor,
+                                       MetaSizeChange     which_change,
+                                       MetaRectangle     *old_frame_rect,
+                                       MetaRectangle     *old_buffer_rect)
 {
  MetaPlugin *plugin = plugin_mgr->plugin;
  MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
  MetaDisplay *display = plugin_mgr->compositor->display;
-  gboolean retval = FALSE;

  if (display->display_opening)
    return FALSE;

-  switch (event)
-    {
-    case META_PLUGIN_MAXIMIZE:
-      if (klass->maximize)
-        {
-          retval = TRUE;
-          meta_plugin_manager_kill_window_effects (plugin_mgr,
-                                                   actor);
-          klass->maximize (plugin, actor,
-                           target_x, target_y,
-                           target_width, target_height);
-        }
-      break;
-    case META_PLUGIN_UNMAXIMIZE:
-      if (klass->unmaximize)
-        {
-          retval = TRUE;
-          meta_plugin_manager_kill_window_effects (plugin_mgr,
-                                                   actor);
-          klass->unmaximize (plugin, actor,
-                             target_x, target_y,
-                             target_width, target_height);
-        }
-      break;
-    default:
-      g_warning ("Incorrect handler called for event %lu", event);
-    }
+  if (!klass->size_change)
+    return FALSE;

-  return retval;
+  meta_plugin_manager_kill_window_effects (plugin_mgr, actor);
+  klass->size_change (plugin, actor, which_change, old_frame_rect, old_buffer_rect);
+  return TRUE;
 }

 /*
--- a/src/compositor/meta-plugin-manager.h
+++ b/src/compositor/meta-plugin-manager.h
@@ -24,20 +24,17 @@

 #include <meta/types.h>
 #include <meta/screen.h>
-
-#define  META_PLUGIN_FROM_MANAGER_
 #include <meta/meta-plugin.h>
-#undef   META_PLUGIN_FROM_MANAGER_

-#define META_PLUGIN_MINIMIZE         (1<<0)
-#define META_PLUGIN_MAXIMIZE         (1<<1)
-#define META_PLUGIN_UNMAXIMIZE       (1<<2)
-#define META_PLUGIN_MAP              (1<<3)
-#define META_PLUGIN_DESTROY          (1<<4)
-#define META_PLUGIN_SWITCH_WORKSPACE (1<<5)
-#define META_PLUGIN_UNMINIMIZE       (1<<6)
-
-#define META_PLUGIN_ALL_EFFECTS      (~0)
+typedef enum {
+  META_PLUGIN_NONE,
+  META_PLUGIN_MINIMIZE,
+  META_PLUGIN_MAP,
+  META_PLUGIN_DESTROY,
+  META_PLUGIN_SWITCH_WORKSPACE,
+  META_PLUGIN_UNMINIMIZE,
+  META_PLUGIN_SIZE_CHANGE,
+} MetaPluginEffect;

 /**
 * MetaPluginManager: (skip)
@@ -51,15 +48,13 @@ void     meta_plugin_manager_load         (const gchar       *plugin_name);

 gboolean meta_plugin_manager_event_simple (MetaPluginManager *mgr,
                                           MetaWindowActor   *actor,
-                                           unsigned long      event);
+                                           MetaPluginEffect   event);

-gboolean meta_plugin_manager_event_maximize    (MetaPluginManager *mgr,
-                                                MetaWindowActor   *actor,
-                                                unsigned long      event,
-                                                gint               target_x,
-                                                gint               target_y,
-                                                gint               target_width,
-                                                gint               target_height);
+gboolean meta_plugin_manager_event_size_change    (MetaPluginManager *mgr,
+                                                   MetaWindowActor   *actor,
+                                                   MetaSizeChange     which_change,
+                                                   MetaRectangle     *old_frame_rect,
+                                                   MetaRectangle     *old_buffer_rect);

 gboolean meta_plugin_manager_switch_workspace (MetaPluginManager   *mgr,
                                               gint                 from,
--- a/src/compositor/meta-plugin.c
+++ b/src/compositor/meta-plugin.c
@@ -118,17 +118,10 @@ meta_plugin_unminimize_completed (MetaPlugin      *plugin,
 }

 void
-meta_plugin_maximize_completed (MetaPlugin      *plugin,
-                                MetaWindowActor *actor)
+meta_plugin_size_change_completed (MetaPlugin      *plugin,
+                                   MetaWindowActor *actor)
 {
-  meta_plugin_window_effect_completed (plugin, actor, META_PLUGIN_MAXIMIZE);
-}
-
-void
-meta_plugin_unmaximize_completed (MetaPlugin      *plugin,
-                                  MetaWindowActor *actor)
-{
-  meta_plugin_window_effect_completed (plugin, actor, META_PLUGIN_UNMAXIMIZE);
+  meta_plugin_window_effect_completed (plugin, actor, META_PLUGIN_SIZE_CHANGE);
 }

 void
--- a/src/compositor/meta-shadow-factory-private.h
+++ b/src/compositor/meta-shadow-factory-private.h
@@ -1,66 +0,0 @@
-/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
-/*
- * MetaShadowFactory:
- *
- * Create and cache shadow textures for arbitrary window shapes
- *
- * Copyright (C) 2010 Red Hat, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __META_SHADOW_FACTORY_PRIVATE_H__
-#define __META_SHADOW_FACTORY_PRIVATE_H__
-
-#include <cairo.h>
-#include <clutter/clutter.h>
-#include "meta-window-shape.h"
-#include <meta/meta-shadow-factory.h>
-
-/**
- * MetaShadow:
- * #MetaShadow holds a shadow texture along with information about how to
- * apply that texture to draw a window texture. (E.g., it knows how big the
- * unscaled borders are on each side of the shadow texture.)
- */
-typedef struct _MetaShadow MetaShadow;
-
-MetaShadow *meta_shadow_ref         (MetaShadow            *shadow);
-void        meta_shadow_unref       (MetaShadow            *shadow);
-CoglTexture*meta_shadow_get_texture (MetaShadow            *shadow);
-void        meta_shadow_paint       (MetaShadow            *shadow,
-                                     int                    window_x,
-                                     int                    window_y,
-                                     int                    window_width,
-                                     int                    window_height,
-                                     guint8                 opacity,
-                                     cairo_region_t        *clip,
-                                     gboolean               clip_strictly);
-void        meta_shadow_get_bounds  (MetaShadow            *shadow,
-                                     int                    window_x,
-                                     int                    window_y,
-                                     int                    window_width,
-                                     int                    window_height,
-                                     cairo_rectangle_int_t *bounds);
-
-MetaShadowFactory *meta_shadow_factory_new (void);
-
-MetaShadow *meta_shadow_factory_get_shadow (MetaShadowFactory *factory,
-                                            MetaWindowShape   *shape,
-                                            int                width,
-                                            int                height,
-                                            const char        *class_name,
-                                            gboolean           focused);
-
-#endif /* __META_SHADOW_FACTORY_PRIVATE_H__ */
--- a/src/compositor/meta-shadow-factory.c
+++ b/src/compositor/meta-shadow-factory.c
@@ -26,8 +26,9 @@
 #include <math.h>
 #include <string.h>

+#include <meta/meta-shadow-factory.h>
+
 #include "cogl-utils.h"
-#include "meta-shadow-factory-private.h"
 #include "region-utils.h"

 /* This file implements blurring the shape of a window to produce a
@@ -1048,3 +1049,6 @@ meta_shadow_factory_get_params (MetaShadowFactory *factory,
  if (params)
    *params = *stored_params;
 }
+
+G_DEFINE_BOXED_TYPE (MetaShadow, meta_shadow,
+                     meta_shadow_ref, meta_shadow_unref)
--- a/src/compositor/meta-shaped-texture-private.h
+++ b/src/compositor/meta-shaped-texture-private.h
@@ -32,6 +32,9 @@
 ClutterActor *meta_shaped_texture_new (void);
 void meta_shaped_texture_set_texture (MetaShapedTexture *stex,
                                      CoglTexture       *texture);
+void meta_shaped_texture_set_fallback_size (MetaShapedTexture *stex,
+                                            guint              fallback_width,
+                                            guint              fallback_height);
 gboolean meta_shaped_texture_is_obscured (MetaShapedTexture *self);

 #endif
--- a/src/compositor/meta-shaped-texture.c
+++ b/src/compositor/meta-shaped-texture.c
@@ -86,6 +86,7 @@ struct _MetaShapedTexturePrivate
  cairo_region_t *unobscured_region;

  guint tex_width, tex_height;
+  guint fallback_width, fallback_height;

  guint create_mipmaps : 1;
 };
@@ -136,7 +137,20 @@ set_unobscured_region (MetaShapedTexture *self,
  g_clear_pointer (&priv->unobscured_region, (GDestroyNotify) cairo_region_destroy);
  if (unobscured_region)
    {
-      cairo_rectangle_int_t bounds = { 0, 0, priv->tex_width, priv->tex_height };
+      guint width, height;
+
+      if (priv->texture)
+        {
+          width = priv->tex_width;
+          height = priv->tex_height;
+        }
+      else
+        {
+          width = priv->fallback_width;
+          height = priv->fallback_height;
+        }
+
+      cairo_rectangle_int_t bounds = { 0, 0, width, height };
      priv->unobscured_region = cairo_region_copy (unobscured_region);
      cairo_region_intersect_rectangle (priv->unobscured_region, &bounds);
    }
@@ -173,10 +187,25 @@ meta_shaped_texture_dispose (GObject *object)
  G_OBJECT_CLASS (meta_shaped_texture_parent_class)->dispose (object);
 }

+static CoglPipeline *
+get_base_pipeline (CoglContext *ctx)
+{
+  static CoglPipeline *template = NULL;
+  if (G_UNLIKELY (template == NULL))
+    {
+      template = cogl_pipeline_new (ctx);
+      cogl_pipeline_set_layer_wrap_mode_s (template, 0, COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+      cogl_pipeline_set_layer_wrap_mode_t (template, 0, COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+      cogl_pipeline_set_layer_wrap_mode_s (template, 1, COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+      cogl_pipeline_set_layer_wrap_mode_t (template, 1, COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+    }
+  return template;
+}
+
 static CoglPipeline *
 get_unmasked_pipeline (CoglContext *ctx)
 {
-  return cogl_pipeline_new (ctx);
+  return get_base_pipeline (ctx);
 }

 static CoglPipeline *
@@ -185,13 +214,13 @@ get_masked_pipeline (CoglContext *ctx)
  static CoglPipeline *template = NULL;
  if (G_UNLIKELY (template == NULL))
    {
-      template = cogl_pipeline_new (ctx);
+      template = cogl_pipeline_copy (get_base_pipeline (ctx));
      cogl_pipeline_set_layer_combine (template, 1,
                                       "RGBA = MODULATE (PREVIOUS, TEXTURE[A])",
                                       NULL);
    }

-  return cogl_pipeline_copy (template);
+  return template;
 }

 static CoglPipeline *
@@ -201,7 +230,7 @@ get_unblended_pipeline (CoglContext *ctx)
  if (G_UNLIKELY (template == NULL))
    {
      CoglColor color;
-      template = cogl_pipeline_new (ctx);
+      template = cogl_pipeline_copy (get_base_pipeline (ctx));
      cogl_color_init_from_4ub (&color, 255, 255, 255, 255);
      cogl_pipeline_set_blend (template,
                               "RGBA = ADD (SRC_COLOR, 0)",
@@ -209,7 +238,7 @@ get_unblended_pipeline (CoglContext *ctx)
      cogl_pipeline_set_color (template, &color);
    }

-  return cogl_pipeline_copy (template);
+  return template;
 }

 static void
@@ -420,8 +449,6 @@ meta_shaped_texture_paint (ClutterActor *actor)
              cairo_region_get_rectangle (region, i, &rect);
              paint_clipped_rectangle (fb, opaque_pipeline, &rect, &alloc);
            }
-
-          cogl_object_unref (opaque_pipeline);
        }

      cairo_region_destroy (region);
@@ -484,8 +511,6 @@ meta_shaped_texture_paint (ClutterActor *actor)
                                           alloc.x2 - alloc.x1,
                                           alloc.y2 - alloc.y1);
        }
-
-      cogl_object_unref (blended_pipeline);
    }

  if (blended_region != NULL)
@@ -498,17 +523,18 @@ meta_shaped_texture_get_preferred_width (ClutterActor *self,
                                         gfloat       *min_width_p,
                                         gfloat       *natural_width_p)
 {
-  MetaShapedTexturePrivate *priv;
+  MetaShapedTexturePrivate *priv = META_SHAPED_TEXTURE (self)->priv;
+  guint width;

-  g_return_if_fail (META_IS_SHAPED_TEXTURE (self));
-
-  priv = META_SHAPED_TEXTURE (self)->priv;
+  if (priv->texture)
+    width = priv->tex_width;
+  else
+    width = priv->fallback_width;

  if (min_width_p)
-    *min_width_p = priv->tex_width;
-
+    *min_width_p = width;
  if (natural_width_p)
-    *natural_width_p = priv->tex_width;
+    *natural_width_p = width;
 }

 static void
@@ -517,17 +543,18 @@ meta_shaped_texture_get_preferred_height (ClutterActor *self,
                                          gfloat       *min_height_p,
                                          gfloat       *natural_height_p)
 {
-  MetaShapedTexturePrivate *priv;
+  MetaShapedTexturePrivate *priv = META_SHAPED_TEXTURE (self)->priv;
+  guint height;

-  g_return_if_fail (META_IS_SHAPED_TEXTURE (self));
-
-  priv = META_SHAPED_TEXTURE (self)->priv;
+  if (priv->texture)
+    height = priv->tex_height;
+  else
+    height = priv->fallback_height;

  if (min_height_p)
-    *min_height_p = priv->tex_height;
-
+    *min_height_p = height;
  if (natural_height_p)
-    *natural_height_p = priv->tex_height;
+    *natural_height_p = height;
 }

 static cairo_region_t *
@@ -860,6 +887,17 @@ meta_shaped_texture_get_image (MetaShapedTexture     *stex,
  return surface;
 }

+void
+meta_shaped_texture_set_fallback_size (MetaShapedTexture *self,
+                                       guint              fallback_width,
+                                       guint              fallback_height)
+{
+  MetaShapedTexturePrivate *priv = self->priv;
+
+  priv->fallback_width = fallback_width;
+  priv->fallback_height = fallback_height;
+}
+
 static void
 meta_shaped_texture_cull_out (MetaCullable   *cullable,
                              cairo_region_t *unobscured_region,
--- a/src/compositor/meta-surface-actor-wayland.c
+++ b/src/compositor/meta-surface-actor-wayland.c
@@ -26,16 +26,28 @@

 #include "meta-surface-actor-wayland.h"

+#include <math.h>
 #include <cogl/cogl-wayland-server.h>
 #include "meta-shaped-texture-private.h"

+#include "wayland/meta-wayland-buffer.h"
 #include "wayland/meta-wayland-private.h"
+#include "wayland/meta-window-wayland.h"

 #include "compositor/region-utils.h"

+enum {
+  PAINTING,
+
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
 struct _MetaSurfaceActorWaylandPrivate
 {
  MetaWaylandSurface *surface;
+  struct wl_list frame_callback_list;
 };
 typedef struct _MetaSurfaceActorWaylandPrivate MetaSurfaceActorWaylandPrivate;

@@ -80,53 +92,89 @@ meta_surface_actor_wayland_is_unredirected (MetaSurfaceActor *actor)
  return FALSE;
 }

-static int
-get_output_scale (int winsys_id)
-{
-  MetaMonitorManager *monitor_manager = meta_monitor_manager_get ();
-  MetaOutput *outputs;
-  guint n_outputs, i;
-  int output_scale = 1;
-
-  outputs = meta_monitor_manager_get_outputs (monitor_manager, &n_outputs);
-
-  for (i = 0; i < n_outputs; i++)
-    {
-      if (outputs[i].winsys_id == winsys_id)
-        {
-          output_scale = outputs[i].scale;
-          break;
-        }
-    }
-
-  return output_scale;
-}
-
 double
 meta_surface_actor_wayland_get_scale (MetaSurfaceActorWayland *actor)
 {
   MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (actor);
   MetaWaylandSurface *surface = priv->surface;
-   MetaWindow *window = surface->window;
+   MetaWindow *window;
   int output_scale = 1;

-   while (surface)
-    {
-      if (surface->window)
-        {
-          window = surface->window;
-          break;
-        }
-      surface = surface->sub.parent;
-    }
+   if (!surface)
+     return 1;
+
+   window = meta_wayland_surface_get_toplevel_window (surface);

   /* XXX: We do not handle x11 clients yet */
   if (window && window->client_type != META_WINDOW_CLIENT_TYPE_X11)
-     output_scale = get_output_scale (window->monitor->winsys_id);
+     output_scale = meta_window_wayland_get_main_monitor_scale (window);

   return (double)output_scale / (double)priv->surface->scale;
 }

+static void
+logical_to_actor_position (MetaSurfaceActorWayland *self,
+                           int                     *x,
+                           int                     *y)
+{
+  MetaWaylandSurface *surface = meta_surface_actor_wayland_get_surface (self);
+  MetaWindow *toplevel_window;
+  int monitor_scale = 1;
+
+  toplevel_window = meta_wayland_surface_get_toplevel_window (surface);
+  if (toplevel_window)
+    monitor_scale = meta_window_wayland_get_main_monitor_scale (toplevel_window);
+
+  *x = *x * monitor_scale;
+  *y = *y * monitor_scale;
+}
+
+/* Convert the current actor state to the corresponding subsurface rectangle
+ * in logical pixel coordinate space. */
+void
+meta_surface_actor_wayland_get_subsurface_rect (MetaSurfaceActorWayland *self,
+                                                MetaRectangle           *rect)
+{
+  MetaWaylandSurface *surface = meta_surface_actor_wayland_get_surface (self);
+  CoglTexture *texture = surface->buffer->texture;
+  MetaWindow *toplevel_window;
+  int monitor_scale;
+  float x, y;
+
+  toplevel_window = meta_wayland_surface_get_toplevel_window (surface);
+  monitor_scale = meta_window_wayland_get_main_monitor_scale (toplevel_window);
+
+  clutter_actor_get_position (CLUTTER_ACTOR (self), &x, &y);
+  *rect = (MetaRectangle) {
+    .x = x / monitor_scale,
+    .y = y / monitor_scale,
+    .width = cogl_texture_get_width (texture) / surface->scale,
+    .height = cogl_texture_get_height (texture) / surface->scale,
+  };
+}
+
+void
+meta_surface_actor_wayland_sync_subsurface_state (MetaSurfaceActorWayland *self)
+{
+  MetaWaylandSurface *surface = meta_surface_actor_wayland_get_surface (self);
+  MetaWindow *window;
+  int x = surface->offset_x + surface->sub.x;
+  int y = surface->offset_y + surface->sub.y;
+
+  window = meta_wayland_surface_get_toplevel_window (surface);
+  if (window && window->client_type == META_WINDOW_CLIENT_TYPE_X11)
+    {
+      /* Bail directly if this is part of a Xwayland window and warn
+       * if there happen to be offsets anyway since that is not supposed
+       * to happen. */
+      g_warn_if_fail (x == 0 && y == 0);
+      return;
+    }
+
+  logical_to_actor_position (self, &x, &y);
+  clutter_actor_set_position (CLUTTER_ACTOR (self), x, y);
+}
+
 void
 meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self)
 {
@@ -158,6 +206,10 @@ meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self)
                                           scaled_input_region);
      cairo_region_destroy (scaled_input_region);
    }
+  else
+    {
+      meta_surface_actor_set_input_region (META_SURFACE_ACTOR (self), NULL);
+    }

  /* Opaque region */
  if (surface->opaque_region)
@@ -173,31 +225,88 @@ meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self)
                                            scaled_opaque_region);
      cairo_region_destroy (scaled_opaque_region);
    }
+  else
+    {
+      meta_surface_actor_set_opaque_region (META_SURFACE_ACTOR (self), NULL);
+    }
+
+  meta_surface_actor_wayland_sync_subsurface_state (self);
 }

 void
 meta_surface_actor_wayland_sync_state_recursive (MetaSurfaceActorWayland *self)
 {
  MetaWaylandSurface *surface = meta_surface_actor_wayland_get_surface (self);
+  MetaWindow *window = meta_wayland_surface_get_toplevel_window (surface);
  GList *iter;

  meta_surface_actor_wayland_sync_state (self);

-  for (iter = surface->subsurfaces; iter != NULL; iter = iter->next)
+  if (window && window->client_type != META_WINDOW_CLIENT_TYPE_X11)
    {
-      MetaWaylandSurface *subsurf = iter->data;
+      for (iter = surface->subsurfaces; iter != NULL; iter = iter->next)
+        {
+          MetaWaylandSurface *subsurf = iter->data;

-      meta_surface_actor_wayland_sync_state_recursive (
-        META_SURFACE_ACTOR_WAYLAND (subsurf->surface_actor));
+          meta_surface_actor_wayland_sync_state_recursive (
+            META_SURFACE_ACTOR_WAYLAND (subsurf->surface_actor));
+        }
    }
 }

+gboolean
+meta_surface_actor_wayland_is_on_monitor (MetaSurfaceActorWayland *self,
+                                          MetaMonitorInfo         *monitor)
+{
+  float x, y, width, height;
+  cairo_rectangle_int_t actor_rect;
+  cairo_region_t *region;
+  gboolean is_on_monitor;
+
+  clutter_actor_get_transformed_position (CLUTTER_ACTOR (self), &x, &y);
+  clutter_actor_get_transformed_size (CLUTTER_ACTOR (self), &width, &height);
+
+  actor_rect.x = (int)roundf (x);
+  actor_rect.y = (int)roundf (y);
+  actor_rect.width = (int)roundf (x + width) - actor_rect.x;
+  actor_rect.height = (int)roundf (y + height) - actor_rect.y;
+
+  /* Calculate the scaled surface actor region. */
+  region = cairo_region_create_rectangle (&actor_rect);
+
+  cairo_region_intersect_rectangle (region,
+				    &((cairo_rectangle_int_t) {
+				      .x = monitor->rect.x,
+				      .y = monitor->rect.y,
+				      .width = monitor->rect.width,
+				      .height = monitor->rect.height,
+				    }));
+
+  is_on_monitor = !cairo_region_is_empty (region);
+  cairo_region_destroy (region);
+
+  return is_on_monitor;
+}
+
+void
+meta_surface_actor_wayland_add_frame_callbacks (MetaSurfaceActorWayland *self,
+                                                struct wl_list *frame_callbacks)
+{
+  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
+
+  wl_list_insert_list (&priv->frame_callback_list, frame_callbacks);
+}
+
 static MetaWindow *
 meta_surface_actor_wayland_get_window (MetaSurfaceActor *actor)
 {
  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (META_SURFACE_ACTOR_WAYLAND (actor));
+  MetaWaylandSurface *surface = priv->surface;

-  return priv->surface->window;
+  if (!surface)
+    return NULL;
+
+  return surface->window;
 }

 static void
@@ -236,6 +345,26 @@ meta_surface_actor_wayland_get_preferred_height  (ClutterActor *self,
    *natural_height_p *= scale;
 }

+static void
+meta_surface_actor_wayland_paint (ClutterActor *actor)
+{
+  MetaSurfaceActorWayland *self = META_SURFACE_ACTOR_WAYLAND (actor);
+  MetaSurfaceActorWaylandPrivate *priv =
+    meta_surface_actor_wayland_get_instance_private (self);
+
+  if (priv->surface)
+    {
+      MetaWaylandCompositor *compositor = priv->surface->compositor;
+
+      wl_list_insert_list (&compositor->frame_callbacks, &priv->frame_callback_list);
+      wl_list_init (&priv->frame_callback_list);
+    }
+
+  g_signal_emit (actor, signals[PAINTING], 0);
+
+  CLUTTER_ACTOR_CLASS (meta_surface_actor_wayland_parent_class)->paint (actor);
+}
+
 static void
 meta_surface_actor_wayland_dispose (GObject *object)
 {
@@ -255,6 +384,7 @@ meta_surface_actor_wayland_class_init (MetaSurfaceActorWaylandClass *klass)

  actor_class->get_preferred_width = meta_surface_actor_wayland_get_preferred_width;
  actor_class->get_preferred_height = meta_surface_actor_wayland_get_preferred_height;
+  actor_class->paint = meta_surface_actor_wayland_paint;

  surface_actor_class->process_damage = meta_surface_actor_wayland_process_damage;
  surface_actor_class->pre_paint = meta_surface_actor_wayland_pre_paint;
@@ -267,6 +397,13 @@ meta_surface_actor_wayland_class_init (MetaSurfaceActorWaylandClass *klass)
  surface_actor_class->get_window = meta_surface_actor_wayland_get_window;

  object_class->dispose = meta_surface_actor_wayland_dispose;
+
+  signals[PAINTING] = g_signal_new ("painting",
+                                    G_TYPE_FROM_CLASS (object_class),
+                                    G_SIGNAL_RUN_LAST,
+                                    0,
+                                    NULL, NULL, NULL,
+                                    G_TYPE_NONE, 0);
 }

 static void
@@ -282,6 +419,7 @@ meta_surface_actor_wayland_new (MetaWaylandSurface *surface)

  g_assert (meta_is_wayland_compositor ());

+  wl_list_init (&priv->frame_callback_list);
  priv->surface = surface;

  return META_SURFACE_ACTOR (self);
@@ -301,3 +439,18 @@ meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self)
  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
  return priv->surface;
 }
+
+void
+meta_surface_actor_wayland_surface_destroyed (MetaSurfaceActorWayland *self)
+{
+  MetaWaylandFrameCallback *callback, *next;
+  MetaSurfaceActorWaylandPrivate *priv =
+    meta_surface_actor_wayland_get_instance_private (self);
+
+  wl_list_for_each_safe (callback, next, &priv->frame_callback_list, link)
+    {
+      wl_resource_destroy (callback->resource);
+    }
+
+  priv->surface = NULL;
+}
--- a/src/compositor/meta-surface-actor-wayland.h
+++ b/src/compositor/meta-surface-actor-wayland.h
@@ -30,6 +30,9 @@
 #include "meta-surface-actor.h"

 #include "wayland/meta-wayland.h"
+#include "wayland/meta-wayland-private.h"
+
+#include "backends/meta-monitor-manager-private.h"

 G_BEGIN_DECLS

@@ -57,16 +60,28 @@ GType meta_surface_actor_wayland_get_type (void);

 MetaSurfaceActor * meta_surface_actor_wayland_new (MetaWaylandSurface *surface);
 MetaWaylandSurface * meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self);
+void meta_surface_actor_wayland_surface_destroyed (MetaSurfaceActorWayland *self);

 void meta_surface_actor_wayland_set_texture (MetaSurfaceActorWayland *self,
                                             CoglTexture *texture);

 double meta_surface_actor_wayland_get_scale (MetaSurfaceActorWayland *actor);

+void meta_surface_actor_wayland_get_subsurface_rect (MetaSurfaceActorWayland *self,
+                                                     MetaRectangle           *rect);
+
 void meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self);

 void meta_surface_actor_wayland_sync_state_recursive (MetaSurfaceActorWayland *self);

+void meta_surface_actor_wayland_sync_subsurface_state (MetaSurfaceActorWayland *self);
+
+gboolean meta_surface_actor_wayland_is_on_monitor (MetaSurfaceActorWayland *self,
+                                                   MetaMonitorInfo         *monitor);
+
+void meta_surface_actor_wayland_add_frame_callbacks (MetaSurfaceActorWayland *self,
+                                                     struct wl_list *frame_callbacks);
+
 G_END_DECLS

 #endif /* __META_SURFACE_ACTOR_WAYLAND_H__ */
--- a/src/compositor/meta-surface-actor-x11.c
+++ b/src/compositor/meta-surface-actor-x11.c
@@ -416,6 +416,7 @@ meta_surface_actor_x11_set_size (MetaSurfaceActorX11 *self,
                                 int width, int height)
 {
  MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self);
+  MetaShapedTexture *stex = meta_surface_actor_get_texture (META_SURFACE_ACTOR (self));

  if (priv->last_width == width &&
      priv->last_height == height)
@@ -424,4 +425,5 @@ meta_surface_actor_x11_set_size (MetaSurfaceActorX11 *self,
  priv->size_changed = TRUE;
  priv->last_width = width;
  priv->last_height = height;
+  meta_shaped_texture_set_fallback_size (stex, width, height);
 }
--- a/src/compositor/meta-sync-ring.c
+++ b/src/compositor/meta-sync-ring.c
@@ -0,0 +1,592 @@
+/*
+ * This is based on an original C++ implementation for compiz that
+ * carries the following copyright notice:
+ *
+ *
+ * Copyright © 2011 NVIDIA Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of NVIDIA
+ * Corporation not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission.  NVIDIA Corporation makes no representations about the
+ * suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * NVIDIA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+ * Authors: James Jones <jajones@nvidia.com>
+ */
+
+#include <string.h>
+
+#include <GL/gl.h>
+#include <GL/glx.h>
+#include <X11/extensions/sync.h>
+
+#include <cogl/cogl.h>
+#include <clutter/clutter.h>
+
+#include <meta/util.h>
+
+#include "meta-sync-ring.h"
+
+/* Theory of operation:
+ *
+ * We use a ring of NUM_SYNCS fence objects. On each frame we advance
+ * to the next fence in the ring. For each fence we do:
+ *
+ * 1. fence is XSyncTriggerFence()'d and glWaitSync()'d
+ * 2. NUM_SYNCS / 2 frames later, fence should be triggered
+ * 3. fence is XSyncResetFence()'d
+ * 4. NUM_SYNCS / 2 frames later, fence should be reset
+ * 5. go back to 1 and re-use fence
+ *
+ * glClientWaitSync() and XAlarms are used in steps 2 and 4,
+ * respectively, to double-check the expectections.
+ */
+
+#define NUM_SYNCS 10
+#define MAX_SYNC_WAIT_TIME (1 * 1000 * 1000 * 1000) /* one sec */
+#define MAX_REBOOT_ATTEMPTS 2
+
+typedef enum
+{
+  META_SYNC_STATE_READY,
+  META_SYNC_STATE_WAITING,
+  META_SYNC_STATE_DONE,
+  META_SYNC_STATE_RESET_PENDING,
+} MetaSyncState;
+
+typedef struct
+{
+  Display *xdisplay;
+
+  XSyncFence xfence;
+  GLsync gl_x11_sync;
+  GLsync gpu_fence;
+
+  XSyncCounter xcounter;
+  XSyncAlarm xalarm;
+  XSyncValue next_counter_value;
+
+  MetaSyncState state;
+} MetaSync;
+
+typedef struct
+{
+  Display *xdisplay;
+  int xsync_event_base;
+  int xsync_error_base;
+
+  GHashTable *alarm_to_sync;
+
+  MetaSync *syncs_array[NUM_SYNCS];
+  guint current_sync_idx;
+  MetaSync *current_sync;
+  guint warmup_syncs;
+
+  guint reboots;
+} MetaSyncRing;
+
+static MetaSyncRing meta_sync_ring = { 0 };
+
+static XSyncValue SYNC_VALUE_ZERO;
+static XSyncValue SYNC_VALUE_ONE;
+
+static const char*      (*meta_gl_get_string) (GLenum name);
+static void             (*meta_gl_get_integerv) (GLenum  pname,
+                                                 GLint  *params);
+static const char*      (*meta_gl_get_stringi) (GLenum name,
+                                                GLuint index);
+static void             (*meta_gl_delete_sync) (GLsync sync);
+static GLenum           (*meta_gl_client_wait_sync) (GLsync sync,
+                                                     GLbitfield flags,
+                                                     GLuint64 timeout);
+static void             (*meta_gl_wait_sync) (GLsync sync,
+                                              GLbitfield flags,
+                                              GLuint64 timeout);
+static GLsync           (*meta_gl_import_sync) (GLenum external_sync_type,
+                                                GLintptr external_sync,
+                                                GLbitfield flags);
+static GLsync           (*meta_gl_fence_sync) (GLenum condition,
+                                               GLbitfield flags);
+
+static MetaSyncRing *
+meta_sync_ring_get (void)
+{
+  if (meta_sync_ring.reboots > MAX_REBOOT_ATTEMPTS)
+    return NULL;
+
+  return &meta_sync_ring;
+}
+
+static gboolean
+load_gl_symbol (const char  *name,
+                void       **func)
+{
+  *func = cogl_get_proc_address (name);
+  if (!*func)
+    {
+      meta_verbose ("MetaSyncRing: failed to resolve required GL symbol \"%s\"\n", name);
+      return FALSE;
+    }
+  return TRUE;
+}
+
+static gboolean
+check_gl_extensions (void)
+{
+  ClutterBackend *backend;
+  CoglContext *cogl_context;
+  CoglDisplay *cogl_display;
+  CoglRenderer *cogl_renderer;
+
+  backend = clutter_get_default_backend ();
+  cogl_context = clutter_backend_get_cogl_context (backend);
+  cogl_display = cogl_context_get_display (cogl_context);
+  cogl_renderer = cogl_display_get_renderer (cogl_display);
+
+  switch (cogl_renderer_get_driver (cogl_renderer))
+    {
+    case COGL_DRIVER_GL3:
+      {
+        int num_extensions, i;
+        gboolean arb_sync = FALSE;
+        gboolean x11_sync_object = FALSE;
+
+        meta_gl_get_integerv (GL_NUM_EXTENSIONS, &num_extensions);
+
+        for (i = 0; i < num_extensions; ++i)
+          {
+            const char *ext = meta_gl_get_stringi (GL_EXTENSIONS, i);
+
+            if (g_strcmp0 ("GL_ARB_sync", ext) == 0)
+              arb_sync = TRUE;
+            else if (g_strcmp0 ("GL_EXT_x11_sync_object", ext) == 0)
+              x11_sync_object = TRUE;
+          }
+
+        return arb_sync && x11_sync_object;
+      }
+    case COGL_DRIVER_GL:
+      {
+        const char *extensions = meta_gl_get_string (GL_EXTENSIONS);
+        return (extensions != NULL &&
+                strstr (extensions, "GL_ARB_sync") != NULL &&
+                strstr (extensions, "GL_EXT_x11_sync_object") != NULL);
+      }
+    default:
+      break;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+load_required_symbols (void)
+{
+  static gboolean success = FALSE;
+
+  if (success)
+    return TRUE;
+
+  /* We don't link against libGL directly because cogl may want to
+   * use something else. This assumes that cogl has been initialized
+   * and dynamically loaded libGL at this point.
+   */
+
+  if (!load_gl_symbol ("glGetString", (void **) &meta_gl_get_string))
+    goto out;
+  if (!load_gl_symbol ("glGetIntegerv", (void **) &meta_gl_get_integerv))
+    goto out;
+  if (!load_gl_symbol ("glGetStringi", (void **) &meta_gl_get_stringi))
+    goto out;
+
+  if (!check_gl_extensions ())
+    {
+      meta_verbose ("MetaSyncRing: couldn't find required GL extensions\n");
+      goto out;
+    }
+
+  if (!load_gl_symbol ("glDeleteSync", (void **) &meta_gl_delete_sync))
+    goto out;
+  if (!load_gl_symbol ("glClientWaitSync", (void **) &meta_gl_client_wait_sync))
+    goto out;
+  if (!load_gl_symbol ("glWaitSync", (void **) &meta_gl_wait_sync))
+    goto out;
+  if (!load_gl_symbol ("glImportSyncEXT", (void **) &meta_gl_import_sync))
+    goto out;
+  if (!load_gl_symbol ("glFenceSync", (void **) &meta_gl_fence_sync))
+    goto out;
+
+  success = TRUE;
+ out:
+  return success;
+}
+
+static void
+meta_sync_insert (MetaSync *self)
+{
+  g_return_if_fail (self->state == META_SYNC_STATE_READY);
+
+  XSyncTriggerFence (self->xdisplay, self->xfence);
+  XFlush (self->xdisplay);
+
+  meta_gl_wait_sync (self->gl_x11_sync, 0, GL_TIMEOUT_IGNORED);
+  self->gpu_fence = meta_gl_fence_sync (GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
+
+  self->state = META_SYNC_STATE_WAITING;
+}
+
+static GLenum
+meta_sync_check_update_finished (MetaSync *self,
+                                 GLuint64  timeout)
+{
+  GLenum status = GL_WAIT_FAILED;
+
+  switch (self->state)
+    {
+    case META_SYNC_STATE_DONE:
+      status = GL_ALREADY_SIGNALED;
+      break;
+    case META_SYNC_STATE_WAITING:
+      status = meta_gl_client_wait_sync (self->gpu_fence, 0, timeout);
+      if (status == GL_ALREADY_SIGNALED || status == GL_CONDITION_SATISFIED)
+        {
+          self->state = META_SYNC_STATE_DONE;
+          meta_gl_delete_sync (self->gpu_fence);
+          self->gpu_fence = 0;
+        }
+      break;
+    default:
+      break;
+    }
+
+  g_warn_if_fail (status != GL_WAIT_FAILED);
+
+  return status;
+}
+
+static void
+meta_sync_reset (MetaSync *self)
+{
+  XSyncAlarmAttributes attrs;
+  int overflow;
+
+  g_return_if_fail (self->state == META_SYNC_STATE_DONE);
+
+  XSyncResetFence (self->xdisplay, self->xfence);
+
+  attrs.trigger.wait_value = self->next_counter_value;
+
+  XSyncChangeAlarm (self->xdisplay, self->xalarm, XSyncCAValue, &attrs);
+  XSyncSetCounter (self->xdisplay, self->xcounter, self->next_counter_value);
+
+  XSyncValueAdd (&self->next_counter_value,
+                 self->next_counter_value,
+                 SYNC_VALUE_ONE,
+                 &overflow);
+
+  self->state = META_SYNC_STATE_RESET_PENDING;
+}
+
+static void
+meta_sync_handle_event (MetaSync              *self,
+                        XSyncAlarmNotifyEvent *event)
+{
+  g_return_if_fail (event->alarm == self->xalarm);
+  g_return_if_fail (self->state == META_SYNC_STATE_RESET_PENDING);
+
+  self->state = META_SYNC_STATE_READY;
+}
+
+static MetaSync *
+meta_sync_new (Display *xdisplay)
+{
+  MetaSync *self;
+  XSyncAlarmAttributes attrs;
+
+  self = g_malloc0 (sizeof (MetaSync));
+
+  self->xdisplay = xdisplay;
+
+  self->xfence = XSyncCreateFence (xdisplay, DefaultRootWindow (xdisplay), FALSE);
+  self->gl_x11_sync = 0;
+  self->gpu_fence = 0;
+
+  self->xcounter = XSyncCreateCounter (xdisplay, SYNC_VALUE_ZERO);
+
+  attrs.trigger.counter = self->xcounter;
+  attrs.trigger.value_type = XSyncAbsolute;
+  attrs.trigger.wait_value = SYNC_VALUE_ONE;
+  attrs.trigger.test_type = XSyncPositiveTransition;
+  attrs.events = TRUE;
+  self->xalarm = XSyncCreateAlarm (xdisplay,
+                                   XSyncCACounter |
+                                   XSyncCAValueType |
+                                   XSyncCAValue |
+                                   XSyncCATestType |
+                                   XSyncCAEvents,
+                                   &attrs);
+
+  XSyncIntToValue (&self->next_counter_value, 1);
+
+  self->state = META_SYNC_STATE_READY;
+
+  return self;
+}
+
+static void
+meta_sync_import (MetaSync *self)
+{
+  g_return_if_fail (self->gl_x11_sync == 0);
+  self->gl_x11_sync = meta_gl_import_sync (GL_SYNC_X11_FENCE_EXT, self->xfence, 0);
+}
+
+static Bool
+alarm_event_predicate (Display  *dpy,
+                       XEvent   *event,
+                       XPointer  data)
+{
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return False;
+
+  if (event->type == ring->xsync_event_base + XSyncAlarmNotify)
+    {
+      if (((MetaSync *) data)->xalarm == ((XSyncAlarmNotifyEvent *) event)->alarm)
+        return True;
+    }
+  return False;
+}
+
+static void
+meta_sync_free (MetaSync *self)
+{
+  /* When our assumptions don't hold, something has gone wrong but we
+   * don't know what, so we reboot the ring. While doing that, we
+   * trigger fences before deleting them to try to get ourselves out
+   * of a potentially stuck GPU state.
+   */
+  switch (self->state)
+    {
+    case META_SYNC_STATE_WAITING:
+      meta_gl_delete_sync (self->gpu_fence);
+      break;
+    case META_SYNC_STATE_DONE:
+      /* nothing to do */
+      break;
+    case META_SYNC_STATE_RESET_PENDING:
+      {
+        XEvent event;
+        XIfEvent (self->xdisplay, &event, alarm_event_predicate, (XPointer) self);
+        meta_sync_handle_event (self, (XSyncAlarmNotifyEvent *) &event);
+      }
+      /* fall through */
+    case META_SYNC_STATE_READY:
+      XSyncTriggerFence (self->xdisplay, self->xfence);
+      XFlush (self->xdisplay);
+      break;
+    default:
+      break;
+    }
+
+  meta_gl_delete_sync (self->gl_x11_sync);
+  XSyncDestroyFence (self->xdisplay, self->xfence);
+  XSyncDestroyCounter (self->xdisplay, self->xcounter);
+  XSyncDestroyAlarm (self->xdisplay, self->xalarm);
+
+  g_free (self);
+}
+
+gboolean
+meta_sync_ring_init (Display *xdisplay)
+{
+  gint major, minor;
+  guint i;
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return FALSE;
+
+  g_return_val_if_fail (xdisplay != NULL, FALSE);
+  g_return_val_if_fail (ring->xdisplay == NULL, FALSE);
+
+  if (!load_required_symbols ())
+    return FALSE;
+
+  if (!XSyncQueryExtension (xdisplay, &ring->xsync_event_base, &ring->xsync_error_base) ||
+      !XSyncInitialize (xdisplay, &major, &minor))
+    return FALSE;
+
+  XSyncIntToValue (&SYNC_VALUE_ZERO, 0);
+  XSyncIntToValue (&SYNC_VALUE_ONE, 1);
+
+  ring->xdisplay = xdisplay;
+
+  ring->alarm_to_sync = g_hash_table_new (NULL, NULL);
+
+  for (i = 0; i < NUM_SYNCS; ++i)
+    {
+      MetaSync *sync = meta_sync_new (ring->xdisplay);
+      ring->syncs_array[i] = sync;
+      g_hash_table_replace (ring->alarm_to_sync, (gpointer) sync->xalarm, sync);
+    }
+  /* Since the connection we create the X fences on isn't the same as
+   * the one used for the GLX context, we need to XSync() here to
+   * ensure glImportSync() succeeds. */
+  XSync (xdisplay, False);
+  for (i = 0; i < NUM_SYNCS; ++i)
+    meta_sync_import (ring->syncs_array[i]);
+
+  ring->current_sync_idx = 0;
+  ring->current_sync = ring->syncs_array[0];
+  ring->warmup_syncs = 0;
+
+  return TRUE;
+}
+
+void
+meta_sync_ring_destroy (void)
+{
+  guint i;
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return;
+
+  g_return_if_fail (ring->xdisplay != NULL);
+
+  ring->current_sync_idx = 0;
+  ring->current_sync = NULL;
+  ring->warmup_syncs = 0;
+
+  for (i = 0; i < NUM_SYNCS; ++i)
+    meta_sync_free (ring->syncs_array[i]);
+
+  g_hash_table_destroy (ring->alarm_to_sync);
+
+  ring->xsync_event_base = 0;
+  ring->xsync_error_base = 0;
+  ring->xdisplay = NULL;
+}
+
+static gboolean
+meta_sync_ring_reboot (Display *xdisplay)
+{
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return FALSE;
+
+  meta_sync_ring_destroy ();
+
+  ring->reboots += 1;
+
+  if (!meta_sync_ring_get ())
+    {
+      meta_warning ("MetaSyncRing: Too many reboots -- disabling\n");
+      return FALSE;
+    }
+
+  return meta_sync_ring_init (xdisplay);
+}
+
+gboolean
+meta_sync_ring_after_frame (void)
+{
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return FALSE;
+
+  g_return_val_if_fail (ring->xdisplay != NULL, FALSE);
+
+  if (ring->warmup_syncs >= NUM_SYNCS / 2)
+    {
+      guint reset_sync_idx = (ring->current_sync_idx + NUM_SYNCS - (NUM_SYNCS / 2)) % NUM_SYNCS;
+      MetaSync *sync_to_reset = ring->syncs_array[reset_sync_idx];
+
+      GLenum status = meta_sync_check_update_finished (sync_to_reset, 0);
+      if (status == GL_TIMEOUT_EXPIRED)
+        {
+          meta_warning ("MetaSyncRing: We should never wait for a sync -- add more syncs?\n");
+          status = meta_sync_check_update_finished (sync_to_reset, MAX_SYNC_WAIT_TIME);
+        }
+
+      if (status != GL_ALREADY_SIGNALED && status != GL_CONDITION_SATISFIED)
+        {
+          meta_warning ("MetaSyncRing: Timed out waiting for sync object.\n");
+          return meta_sync_ring_reboot (ring->xdisplay);
+        }
+
+      meta_sync_reset (sync_to_reset);
+    }
+  else
+    {
+      ring->warmup_syncs += 1;
+    }
+
+  ring->current_sync_idx += 1;
+  ring->current_sync_idx %= NUM_SYNCS;
+
+  ring->current_sync = ring->syncs_array[ring->current_sync_idx];
+
+  return TRUE;
+}
+
+gboolean
+meta_sync_ring_insert_wait (void)
+{
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return FALSE;
+
+  g_return_val_if_fail (ring->xdisplay != NULL, FALSE);
+
+  if (ring->current_sync->state != META_SYNC_STATE_READY)
+    {
+      meta_warning ("MetaSyncRing: Sync object is not ready -- were events handled properly?\n");
+      if (!meta_sync_ring_reboot (ring->xdisplay))
+        return FALSE;
+    }
+
+  meta_sync_insert (ring->current_sync);
+
+  return TRUE;
+}
+
+void
+meta_sync_ring_handle_event (XEvent *xevent)
+{
+  XSyncAlarmNotifyEvent *event;
+  MetaSync *sync;
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return;
+
+  g_return_if_fail (ring->xdisplay != NULL);
+
+  if (xevent->type != (ring->xsync_event_base + XSyncAlarmNotify))
+    return;
+
+  event = (XSyncAlarmNotifyEvent *) xevent;
+
+  sync = g_hash_table_lookup (ring->alarm_to_sync, (gpointer) event->alarm);
+  if (sync)
+    meta_sync_handle_event (sync, event);
+}
--- a/src/compositor/meta-sync-ring.h
+++ b/src/compositor/meta-sync-ring.h
@@ -0,0 +1,14 @@
+#ifndef _META_SYNC_RING_H_
+#define _META_SYNC_RING_H_
+
+#include <glib.h>
+
+#include <X11/Xlib.h>
+
+gboolean meta_sync_ring_init (Display *dpy);
+void meta_sync_ring_destroy (void);
+gboolean meta_sync_ring_after_frame (void);
+gboolean meta_sync_ring_insert_wait (void);
+void meta_sync_ring_handle_event (XEvent *event);
+
+#endif  /* _META_SYNC_RING_H_ */
--- a/src/compositor/meta-window-actor-private.h
+++ b/src/compositor/meta-window-actor-private.h
@@ -8,6 +8,7 @@
 #include <X11/extensions/Xdamage.h>
 #include <meta/compositor-mutter.h>
 #include "meta-surface-actor.h"
+#include "meta-plugin-manager.h"

 MetaWindowActor *meta_window_actor_new (MetaWindow *window);

@@ -18,12 +19,10 @@ void meta_window_actor_show (MetaWindowActor *self,
 void meta_window_actor_hide (MetaWindowActor *self,
                             MetaCompEffect   effect);

-void meta_window_actor_maximize   (MetaWindowActor *self,
-                                   MetaRectangle   *old_rect,
-                                   MetaRectangle   *new_rect);
-void meta_window_actor_unmaximize (MetaWindowActor *self,
-                                   MetaRectangle   *old_rect,
-                                   MetaRectangle   *new_rect);
+void meta_window_actor_size_change   (MetaWindowActor *self,
+                                      MetaSizeChange   which_change,
+                                      MetaRectangle   *old_frame_rect,
+                                      MetaRectangle   *old_buffer_rect);

 void meta_window_actor_process_x11_damage (MetaWindowActor    *self,
                                           XDamageNotifyEvent *event);
@@ -55,8 +54,8 @@ void     meta_window_actor_sync_updates_frozen (MetaWindowActor *self);
 void     meta_window_actor_queue_frame_drawn   (MetaWindowActor *self,
                                                gboolean         no_delay_frame);

-void meta_window_actor_effect_completed (MetaWindowActor *actor,
-                                         gulong           event);
+void meta_window_actor_effect_completed (MetaWindowActor  *actor,
+                                         MetaPluginEffect  event);

 MetaSurfaceActor *meta_window_actor_get_surface (MetaWindowActor *self);
 void meta_window_actor_update_surface (MetaWindowActor *self);
--- a/src/compositor/meta-window-actor.c
+++ b/src/compositor/meta-window-actor.c
@@ -20,10 +20,11 @@
 #include "frame.h"
 #include <meta/window.h>
 #include <meta/meta-shaped-texture.h>
+#include <meta/meta-enum-types.h>
+#include <meta/meta-shadow-factory.h>

 #include "compositor-private.h"
 #include "meta-shaped-texture-private.h"
-#include "meta-shadow-factory-private.h"
 #include "meta-window-actor-private.h"
 #include "meta-texture-rectangle.h"
 #include "region-utils.h"
@@ -74,6 +75,8 @@ struct _MetaWindowActorPrivate
  MetaWindowShape  *shadow_shape;
  char *            shadow_class;

+  MetaShadowMode    shadow_mode;
+
  guint             send_frame_messages_timer;
  gint64            frame_drawn_time;

@@ -87,8 +90,7 @@ struct _MetaWindowActorPrivate
   */
  gint              minimize_in_progress;
  gint              unminimize_in_progress;
-  gint              maximize_in_progress;
-  gint              unmaximize_in_progress;
+  gint              size_change_in_progress;
  gint              map_in_progress;
  gint              destroy_in_progress;

@@ -110,8 +112,6 @@ struct _MetaWindowActorPrivate

  guint		    needs_destroy	   : 1;

-  guint             no_shadow              : 1;
-
  guint             updates_frozen         : 1;
  guint             first_frame_state      : 2; /* FirstFrameState */
 };
@@ -147,7 +147,7 @@ static guint signals[LAST_SIGNAL] = { 0 };
 enum
 {
  PROP_META_WINDOW = 1,
-  PROP_NO_SHADOW,
+  PROP_SHADOW_MODE,
  PROP_SHADOW_CLASS
 };

@@ -245,14 +245,15 @@ meta_window_actor_class_init (MetaWindowActorClass *klass)
                                   PROP_META_WINDOW,
                                   pspec);

-  pspec = g_param_spec_boolean ("no-shadow",
-                                "No shadow",
-                                "Do not add shaddow to this window",
-                                FALSE,
-                                G_PARAM_READWRITE);
+  pspec = g_param_spec_enum ("shadow-mode",
+                             "Shadow mode",
+                             "Decides when to paint shadows",
+                             META_TYPE_SHADOW_MODE,
+                             META_SHADOW_MODE_AUTO,
+                             G_PARAM_READWRITE);

  g_object_class_install_property (object_class,
-                                   PROP_NO_SHADOW,
+                                   PROP_SHADOW_MODE,
                                   pspec);

  pspec = g_param_spec_string ("shadow-class",
@@ -510,14 +511,14 @@ meta_window_actor_set_property (GObject      *object,
      g_signal_connect_object (priv->window, "notify::appears-focused",
                               G_CALLBACK (window_appears_focused_notify), self, 0);
      break;
-    case PROP_NO_SHADOW:
+    case PROP_SHADOW_MODE:
      {
-        gboolean newv = g_value_get_boolean (value);
+        MetaShadowMode newv = g_value_get_enum (value);

-        if (newv == priv->no_shadow)
+        if (newv == priv->shadow_mode)
          return;

-        priv->no_shadow = newv;
+        priv->shadow_mode = newv;

        meta_window_actor_invalidate_shadow (self);
      }
@@ -554,8 +555,8 @@ meta_window_actor_get_property (GObject      *object,
    case PROP_META_WINDOW:
      g_value_set_object (value, priv->window);
      break;
-    case PROP_NO_SHADOW:
-      g_value_set_boolean (value, priv->no_shadow);
+    case PROP_SHADOW_MODE:
+      g_value_set_enum (value, priv->shadow_mode);
      break;
    case PROP_SHADOW_CLASS:
      g_value_set_string (value, priv->shadow_class);
@@ -615,8 +616,10 @@ meta_window_actor_get_shape_bounds (MetaWindowActor       *self,
 #ifdef HAVE_WAYLAND
  if (META_IS_SURFACE_ACTOR_WAYLAND (priv->surface))
    {
-      double scale = priv->surface ?
-                     meta_surface_actor_wayland_get_scale (META_SURFACE_ACTOR_WAYLAND (priv->surface)) : 1.;
+      MetaSurfaceActorWayland *surface_actor =
+        META_SURFACE_ACTOR_WAYLAND (priv->surface);
+      double scale = meta_surface_actor_wayland_get_scale (surface_actor);
+
      bounds->x *= scale;
      bounds->y *= scale;
      bounds->width *= scale;
@@ -802,8 +805,10 @@ meta_window_actor_has_shadow (MetaWindowActor *self)
 {
  MetaWindowActorPrivate *priv = self->priv;

-  if (priv->no_shadow)
+  if (priv->shadow_mode == META_SHADOW_MODE_FORCED_OFF)
    return FALSE;
+  if (priv->shadow_mode == META_SHADOW_MODE_FORCED_ON)
+    return TRUE;

  /* Leaving out shadows for maximized and fullscreen windows is an effeciency
   * win and also prevents the unsightly effect of the shadow of maximized
@@ -827,21 +832,23 @@ meta_window_actor_has_shadow (MetaWindowActor *self)
    return TRUE;

  /*
-   * Do not add shadows to non-opaque windows; eventually we should generate
-   * a shadow from the input shape for such windows.
+   * Do not add shadows to non-opaque (ARGB32) windows, as we can't easily
+   * generate shadows for them.
   */
  if (is_non_opaque (self))
    return FALSE;

  /*
-   * Add shadows to override redirect windows on X11 unless the toolkit
-   * indicates that it is handling shadows itself (e.g., Gtk menus).
+   * If a window specifies that it has custom frame extents, that likely
+   * means that it is drawing a shadow itself. Don't draw our own.
   */
-  if (priv->window->override_redirect &&
-      !priv->window->has_custom_frame_extents)
-    return TRUE;
+  if (priv->window->has_custom_frame_extents)
+    return FALSE;

-  return FALSE;
+  /*
+   * Generate shadows for all other windows.
+   */
+  return TRUE;
 }

 /**
@@ -1036,20 +1043,18 @@ gboolean
 meta_window_actor_effect_in_progress (MetaWindowActor *self)
 {
  return (self->priv->minimize_in_progress ||
-	  self->priv->maximize_in_progress ||
-	  self->priv->unmaximize_in_progress ||
+	  self->priv->size_change_in_progress ||
 	  self->priv->map_in_progress ||
 	  self->priv->destroy_in_progress);
 }

 static gboolean
-is_freeze_thaw_effect (gulong event)
+is_freeze_thaw_effect (MetaPluginEffect event)
 {
  switch (event)
  {
  case META_PLUGIN_DESTROY:
-  case META_PLUGIN_MAXIMIZE:
-  case META_PLUGIN_UNMAXIMIZE:
+  case META_PLUGIN_SIZE_CHANGE:
    return TRUE;
    break;
  default:
@@ -1058,8 +1063,8 @@ is_freeze_thaw_effect (gulong event)
 }

 static gboolean
-start_simple_effect (MetaWindowActor *self,
-                     gulong        event)
+start_simple_effect (MetaWindowActor  *self,
+                     MetaPluginEffect  event)
 {
  MetaWindowActorPrivate *priv = self->priv;
  MetaCompositor *compositor = priv->compositor;
@@ -1068,6 +1073,8 @@ start_simple_effect (MetaWindowActor *self,

  switch (event)
  {
+  case META_PLUGIN_NONE:
+    return FALSE;
  case META_PLUGIN_MINIMIZE:
    counter = &priv->minimize_in_progress;
    break;
@@ -1080,8 +1087,7 @@ start_simple_effect (MetaWindowActor *self,
  case META_PLUGIN_DESTROY:
    counter = &priv->destroy_in_progress;
    break;
-  case META_PLUGIN_UNMAXIMIZE:
-  case META_PLUGIN_MAXIMIZE:
+  case META_PLUGIN_SIZE_CHANGE:
  case META_PLUGIN_SWITCH_WORKSPACE:
    g_assert_not_reached ();
    break;
@@ -1123,8 +1129,8 @@ meta_window_actor_after_effects (MetaWindowActor *self)
 }

 void
-meta_window_actor_effect_completed (MetaWindowActor *self,
-                                    gulong           event)
+meta_window_actor_effect_completed (MetaWindowActor  *self,
+                                    MetaPluginEffect  event)
 {
  MetaWindowActorPrivate *priv   = self->priv;

@@ -1134,6 +1140,8 @@ meta_window_actor_effect_completed (MetaWindowActor *self,

  switch (event)
  {
+  case META_PLUGIN_NONE:
+    break;
  case META_PLUGIN_MINIMIZE:
    {
      priv->minimize_in_progress--;
@@ -1176,20 +1184,12 @@ meta_window_actor_effect_completed (MetaWindowActor *self,
 	priv->destroy_in_progress = 0;
      }
    break;
-  case META_PLUGIN_UNMAXIMIZE:
-    priv->unmaximize_in_progress--;
-    if (priv->unmaximize_in_progress < 0)
+  case META_PLUGIN_SIZE_CHANGE:
+    priv->size_change_in_progress--;
+    if (priv->size_change_in_progress < 0)
      {
-	g_warning ("Error in unmaximize accounting.");
-	priv->unmaximize_in_progress = 0;
-      }
-    break;
-  case META_PLUGIN_MAXIMIZE:
-    priv->maximize_in_progress--;
-    if (priv->maximize_in_progress < 0)
-      {
-	g_warning ("Error in maximize accounting.");
-	priv->maximize_in_progress = 0;
+	g_warning ("Error in size change accounting.");
+	priv->size_change_in_progress = 0;
      }
    break;
  case META_PLUGIN_SWITCH_WORKSPACE:
@@ -1300,7 +1300,7 @@ meta_window_actor_show (MetaWindowActor   *self,
 {
  MetaWindowActorPrivate *priv = self->priv;
  MetaCompositor *compositor = priv->compositor;
-  gulong event = 0;
+  MetaPluginEffect event;

  g_return_if_fail (!priv->visible);

@@ -1315,14 +1315,13 @@ meta_window_actor_show (MetaWindowActor   *self,
      event = META_PLUGIN_UNMINIMIZE;
      break;
    case META_COMP_EFFECT_NONE:
+      event = META_PLUGIN_NONE;
      break;
-    case META_COMP_EFFECT_DESTROY:
-    case META_COMP_EFFECT_MINIMIZE:
+    default:
      g_assert_not_reached();
    }

  if (compositor->switch_workspace_in_progress ||
-      event == 0 ||
      !start_simple_effect (self, event))
    {
      clutter_actor_show (CLUTTER_ACTOR (self));
@@ -1335,7 +1334,7 @@ meta_window_actor_hide (MetaWindowActor *self,
 {
  MetaWindowActorPrivate *priv = self->priv;
  MetaCompositor *compositor = priv->compositor;
-  gulong event = 0;
+  MetaPluginEffect event;

  g_return_if_fail (priv->visible);

@@ -1357,70 +1356,32 @@ meta_window_actor_hide (MetaWindowActor *self,
      event = META_PLUGIN_MINIMIZE;
      break;
    case META_COMP_EFFECT_NONE:
+      event = META_PLUGIN_NONE;
      break;
-    case META_COMP_EFFECT_UNMINIMIZE:
-    case META_COMP_EFFECT_CREATE:
+    default:
      g_assert_not_reached();
    }

-  if (event == 0 ||
-      !start_simple_effect (self, event))
+  if (!start_simple_effect (self, event))
    clutter_actor_hide (CLUTTER_ACTOR (self));
 }

 void
-meta_window_actor_maximize (MetaWindowActor    *self,
-                            MetaRectangle      *old_rect,
-                            MetaRectangle      *new_rect)
+meta_window_actor_size_change (MetaWindowActor    *self,
+                               MetaSizeChange      which_change,
+                               MetaRectangle      *old_frame_rect,
+                               MetaRectangle      *old_buffer_rect)
 {
  MetaWindowActorPrivate *priv = self->priv;
  MetaCompositor *compositor = priv->compositor;

-  /* The window has already been resized (in order to compute new_rect),
-   * which by side effect caused the actor to be resized. Restore it to the
-   * old size and position */
-  clutter_actor_set_position (CLUTTER_ACTOR (self), old_rect->x, old_rect->y);
-  clutter_actor_set_size (CLUTTER_ACTOR (self), old_rect->width, old_rect->height);
-
-  self->priv->maximize_in_progress++;
+  self->priv->size_change_in_progress++;
  meta_window_actor_freeze (self);

-  if (!meta_plugin_manager_event_maximize (compositor->plugin_mgr,
-                                           self,
-                                           META_PLUGIN_MAXIMIZE,
-                                           new_rect->x, new_rect->y,
-                                           new_rect->width, new_rect->height))
-
+  if (!meta_plugin_manager_event_size_change (compositor->plugin_mgr, self,
+                                              which_change, old_frame_rect, old_buffer_rect))
    {
-      self->priv->maximize_in_progress--;
-      meta_window_actor_thaw (self);
-    }
-}
-
-void
-meta_window_actor_unmaximize (MetaWindowActor   *self,
-                              MetaRectangle     *old_rect,
-                              MetaRectangle     *new_rect)
-{
-  MetaWindowActorPrivate *priv = self->priv;
-  MetaCompositor *compositor = priv->compositor;
-
-  /* The window has already been resized (in order to compute new_rect),
-   * which by side effect caused the actor to be resized. Restore it to the
-   * old size and position */
-  clutter_actor_set_position (CLUTTER_ACTOR (self), old_rect->x, old_rect->y);
-  clutter_actor_set_size (CLUTTER_ACTOR (self), old_rect->width, old_rect->height);
-
-  self->priv->unmaximize_in_progress++;
-  meta_window_actor_freeze (self);
-
-  if (!meta_plugin_manager_event_maximize (compositor->plugin_mgr,
-                                           self,
-                                           META_PLUGIN_UNMAXIMIZE,
-                                           new_rect->x, new_rect->y,
-                                           new_rect->width, new_rect->height))
-    {
-      self->priv->unmaximize_in_progress--;
+      self->priv->size_change_in_progress--;
      meta_window_actor_thaw (self);
    }
 }
--- a/src/compositor/meta-window-group.c
+++ b/src/compositor/meta-window-group.c
@@ -58,9 +58,7 @@ meta_window_group_paint (ClutterActor *actor)
  cairo_region_t *clip_region;
  cairo_region_t *unobscured_region;
  cairo_rectangle_int_t visible_rect, clip_rect;
-  int paint_x_offset, paint_y_offset;
  int paint_x_origin, paint_y_origin;
-  int actor_x_origin, actor_y_origin;
  int screen_width, screen_height;

  MetaWindowGroup *window_group = META_WINDOW_GROUP (actor);
@@ -82,7 +80,7 @@ meta_window_group_paint (ClutterActor *actor)
   * on the stage.
   */
  if (!meta_actor_painting_untransformed (screen_width, screen_height, &paint_x_origin, &paint_y_origin) ||
-      !meta_actor_is_untransformed (actor, &actor_x_origin, &actor_y_origin))
+      !meta_actor_is_untransformed (actor, NULL, NULL))
    {
      CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);
      return;
@@ -105,9 +103,7 @@ meta_window_group_paint (ClutterActor *actor)

  clip_region = cairo_region_create_rectangle (&clip_rect);

-  paint_x_offset = paint_x_origin - actor_x_origin;
-  paint_y_offset = paint_y_origin - actor_y_origin;
-  cairo_region_translate (clip_region, -paint_x_offset, -paint_y_offset);
+  cairo_region_translate (clip_region, -paint_x_origin, -paint_y_origin);

  meta_cullable_cull_out (META_CULLABLE (window_group), unobscured_region, clip_region);

@@ -145,6 +141,36 @@ meta_window_group_get_paint_volume (ClutterActor       *self,
  return TRUE;
 }

+/* This is a workaround for Clutter's awful allocation tracking.
+ * Without this, any time the window group changed size, which is
+ * any time windows are dragged around, we'll do a full repaint
+ * of the window group, which includes the background actor, meaning
+ * a full-stage repaint.
+ *
+ * Since actors are allowed to paint outside their allocation, and
+ * since child actors are allowed to be outside their parents, this
+ * doesn't affect anything, but it means that we'll get much more
+ * sane and consistent clipped repaints from Clutter. */
+static void
+meta_window_group_get_preferred_width (ClutterActor *actor,
+                                       gfloat        for_height,
+                                       gfloat       *min_width,
+                                       gfloat       *nat_width)
+{
+  *min_width = 0;
+  *nat_width = 0;
+}
+
+static void
+meta_window_group_get_preferred_height (ClutterActor *actor,
+                                        gfloat        for_width,
+                                        gfloat       *min_height,
+                                        gfloat       *nat_height)
+{
+  *min_height = 0;
+  *nat_height = 0;
+}
+
 static void
 meta_window_group_class_init (MetaWindowGroupClass *klass)
 {
@@ -152,6 +178,8 @@ meta_window_group_class_init (MetaWindowGroupClass *klass)

  actor_class->paint = meta_window_group_paint;
  actor_class->get_paint_volume = meta_window_group_get_paint_volume;
+  actor_class->get_preferred_width = meta_window_group_get_preferred_width;
+  actor_class->get_preferred_height = meta_window_group_get_preferred_height;
 }

 static void
--- a/src/compositor/meta-window-shape.c
+++ b/src/compositor/meta-window-shape.c
@@ -1,4 +1,5 @@
 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
 /*
 * MetaWindowShape
 *
@@ -19,9 +20,12 @@
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
-#include <string.h>

-#include "meta-window-shape.h"
+#include "config.h"
+
+#include <meta/meta-window-shape.h>
+
+#include <string.h>
 #include "region-utils.h"

 struct _MetaWindowShape
@@ -250,3 +254,5 @@ meta_window_shape_to_region (MetaWindowShape *shape,
  return region;
 }

+G_DEFINE_BOXED_TYPE (MetaWindowShape, meta_window_shape,
+                     meta_window_shape_ref, meta_window_shape_unref)
--- a/src/compositor/plugins/default.c
+++ b/src/compositor/plugins/default.c
@@ -255,6 +255,31 @@ get_actor_private (MetaWindowActor *actor)
  return priv;
 }

+static ClutterTimeline *
+actor_animate (ClutterActor         *actor,
+               ClutterAnimationMode  mode,
+               guint                 duration,
+               const gchar          *first_property,
+               ...)
+{
+  va_list args;
+  ClutterTransition *transition;
+
+  clutter_actor_save_easing_state (actor);
+  clutter_actor_set_easing_mode (actor, mode);
+  clutter_actor_set_easing_duration (actor, duration);
+
+  va_start (args, first_property);
+  g_object_set_valist (G_OBJECT (actor), first_property, args);
+  va_end (args);
+
+  transition = clutter_actor_get_transition (actor, first_property);
+
+  clutter_actor_restore_easing_state (actor);
+
+  return CLUTTER_TIMELINE (transition);
+}
+
 static void
 on_switch_workspace_effect_complete (ClutterTimeline *timeline, gpointer data)
 {
@@ -271,7 +296,10 @@ on_switch_workspace_effect_complete (ClutterTimeline *timeline, gpointer data)

      if (apriv->orig_parent)
        {
-          clutter_actor_reparent (a, apriv->orig_parent);
+          g_object_ref (a);
+          clutter_actor_remove_child (clutter_actor_get_parent (a), a);
+          clutter_actor_add_child (apriv->orig_parent, a);
+          g_object_unref (a);
          apriv->orig_parent = NULL;
        }

@@ -360,11 +388,10 @@ switch_workspace (MetaPlugin *plugin,
  MetaScreen *screen;
  MetaDefaultPluginPrivate *priv = META_DEFAULT_PLUGIN (plugin)->priv;
  GList        *l;
-  ClutterActor *workspace0  = clutter_group_new ();
-  ClutterActor *workspace1  = clutter_group_new ();
+  ClutterActor *workspace0  = clutter_actor_new ();
+  ClutterActor *workspace1  = clutter_actor_new ();
  ClutterActor *stage;
  int           screen_width, screen_height;
-  ClutterAnimation *animation;

  screen = meta_plugin_get_screen (plugin);
  stage = meta_get_stage_for_screen (screen);
@@ -373,17 +400,15 @@ switch_workspace (MetaPlugin *plugin,
                        &screen_width,
                        &screen_height);

-  clutter_actor_set_anchor_point (workspace1,
-                                  screen_width,
-                                  screen_height);
+  clutter_actor_set_pivot_point (workspace1, 1.0, 1.0);
  clutter_actor_set_position (workspace1,
                              screen_width,
                              screen_height);

  clutter_actor_set_scale (workspace1, 0.0, 0.0);

-  clutter_container_add_actor (CLUTTER_CONTAINER (stage), workspace1);
-  clutter_container_add_actor (CLUTTER_CONTAINER (stage), workspace0);
+  clutter_actor_add_child (stage, workspace1);
+  clutter_actor_add_child (stage, workspace0);

  if (from == to)
    {
@@ -406,12 +431,15 @@ switch_workspace (MetaPlugin *plugin,

      if (win_workspace == to || win_workspace == from)
        {
+          ClutterActor *parent = win_workspace == to ? workspace1 : workspace0;
          apriv->orig_parent = clutter_actor_get_parent (actor);

-          clutter_actor_reparent (actor,
-				  win_workspace == to ? workspace1 : workspace0);
-          clutter_actor_show_all (actor);
-          clutter_actor_raise_top (actor);
+          g_object_ref (actor);
+          clutter_actor_remove_child (clutter_actor_get_parent (actor), actor);
+          clutter_actor_add_child (parent, actor);
+          clutter_actor_show (actor);
+          clutter_actor_set_child_below_sibling (parent, actor, NULL);
+          g_object_unref (actor);
        }
      else if (win_workspace < 0)
        {
@@ -431,23 +459,21 @@ switch_workspace (MetaPlugin *plugin,
  priv->desktop1 = workspace0;
  priv->desktop2 = workspace1;

-  animation = clutter_actor_animate (workspace0, CLUTTER_EASE_IN_SINE,
-                                     SWITCH_TIMEOUT,
-                                     "scale-x", 1.0,
-                                     "scale-y", 1.0,
-                                     NULL);
-  priv->tml_switch_workspace1 = clutter_animation_get_timeline (animation);
+  priv->tml_switch_workspace1 = actor_animate (workspace0, CLUTTER_EASE_IN_SINE,
+                                               SWITCH_TIMEOUT,
+                                               "scale-x", 1.0,
+                                               "scale-y", 1.0,
+                                               NULL);
  g_signal_connect (priv->tml_switch_workspace1,
                    "completed",
                    G_CALLBACK (on_switch_workspace_effect_complete),
                    plugin);

-  animation = clutter_actor_animate (workspace1, CLUTTER_EASE_IN_SINE,
-                                     SWITCH_TIMEOUT,
-                                     "scale-x", 0.0,
-                                     "scale-y", 0.0,
-                                     NULL);
-  priv->tml_switch_workspace2 = clutter_animation_get_timeline (animation);
+  priv->tml_switch_workspace2 = actor_animate (workspace1, CLUTTER_EASE_IN_SINE,
+                                               SWITCH_TIMEOUT,
+                                               "scale-x", 0.0,
+                                               "scale-y", 0.0,
+                                               NULL);
 }


@@ -504,19 +530,17 @@ minimize (MetaPlugin *plugin, MetaWindowActor *window_actor)

  if (type == META_WINDOW_NORMAL)
    {
-      ClutterAnimation *animation;
      EffectCompleteData *data = g_new0 (EffectCompleteData, 1);
      ActorPrivate *apriv = get_actor_private (window_actor);

-      animation = clutter_actor_animate (actor,
-                                         CLUTTER_EASE_IN_SINE,
-                                         MINIMIZE_TIMEOUT,
-                                         "scale-x", 0.0,
-                                         "scale-y", 0.0,
-                                         "x", (double)icon_geometry.x,
-                                         "y", (double)icon_geometry.y,
-                                         NULL);
-      apriv->tml_minimize = clutter_animation_get_timeline (animation);
+      apriv->tml_minimize = actor_animate (actor,
+                                           CLUTTER_EASE_IN_SINE,
+                                           MINIMIZE_TIMEOUT,
+                                           "scale-x", 0.0,
+                                           "scale-y", 0.0,
+                                           "x", (double)icon_geometry.x,
+                                           "y", (double)icon_geometry.y,
+                                           NULL);
      data->plugin = plugin;
      data->actor = actor;
      g_signal_connect (apriv->tml_minimize, "completed",
@@ -561,7 +585,6 @@ map (MetaPlugin *plugin, MetaWindowActor *window_actor)

  if (type == META_WINDOW_NORMAL)
    {
-      ClutterAnimation *animation;
      EffectCompleteData *data = g_new0 (EffectCompleteData, 1);
      ActorPrivate *apriv = get_actor_private (window_actor);

@@ -570,14 +593,13 @@ map (MetaPlugin *plugin, MetaWindowActor *window_actor)
      clutter_actor_set_scale (actor, 0.5, 0.5);
      clutter_actor_show (actor);

-      animation = clutter_actor_animate (actor,
-                                         CLUTTER_EASE_OUT_QUAD,
-                                         MAP_TIMEOUT,
-                                         "opacity", 255,
-                                         "scale-x", 1.0,
-                                         "scale-y", 1.0,
-                                         NULL);
-      apriv->tml_map = clutter_animation_get_timeline (animation);
+      apriv->tml_map = actor_animate (actor,
+                                      CLUTTER_EASE_OUT_QUAD,
+                                      MAP_TIMEOUT,
+                                      "opacity", 255,
+                                      "scale-x", 1.0,
+                                      "scale-y", 1.0,
+                                      NULL);
      data->actor = actor;
      data->plugin = plugin;
      g_signal_connect (apriv->tml_map, "completed",
@@ -618,18 +640,16 @@ destroy (MetaPlugin *plugin, MetaWindowActor *window_actor)

  if (type == META_WINDOW_NORMAL)
    {
-      ClutterAnimation *animation;
      EffectCompleteData *data = g_new0 (EffectCompleteData, 1);
      ActorPrivate *apriv = get_actor_private (window_actor);

-      animation = clutter_actor_animate (actor,
-                                         CLUTTER_EASE_OUT_QUAD,
-                                         DESTROY_TIMEOUT,
-                                         "opacity", 0,
-                                         "scale-x", 0.8,
-                                         "scale-y", 0.8,
-                                         NULL);
-      apriv->tml_destroy = clutter_animation_get_timeline (animation);
+      apriv->tml_destroy = actor_animate (actor,
+                                          CLUTTER_EASE_OUT_QUAD,
+                                          DESTROY_TIMEOUT,
+                                          "opacity", 0,
+                                          "scale-x", 0.8,
+                                          "scale-y", 0.8,
+                                          NULL);
      data->plugin = plugin;
      data->actor = actor;
      g_signal_connect (apriv->tml_destroy, "completed",
@@ -689,7 +709,7 @@ show_tile_preview (MetaPlugin    *plugin,
  ScreenTilePreview *preview = get_screen_tile_preview (screen);
  ClutterActor *window_actor;

-  if (CLUTTER_ACTOR_IS_VISIBLE (preview->actor)
+  if (clutter_actor_is_visible (preview->actor)
      && preview->tile_rect.x == tile_rect->x
      && preview->tile_rect.y == tile_rect->y
      && preview->tile_rect.width == tile_rect->width
@@ -702,7 +722,9 @@ show_tile_preview (MetaPlugin    *plugin,
  clutter_actor_show (preview->actor);

  window_actor = CLUTTER_ACTOR (meta_window_get_compositor_private (window));
-  clutter_actor_lower (preview->actor, window_actor);
+  clutter_actor_set_child_below_sibling (clutter_actor_get_parent (preview->actor),
+                                         preview->actor,
+                                         window_actor);

  preview->tile_rect = *tile_rect;
 }
--- a/src/core/constraints.c
+++ b/src/core/constraints.c
@@ -493,11 +493,10 @@ place_window_if_needed(MetaWindow     *window,
  if (window->placed || did_placement)
    {
      if (window->maximize_horizontally_after_placement ||
-          window->maximize_vertically_after_placement   ||
-          window->fullscreen_after_placement)
+          window->maximize_vertically_after_placement)
        {
-          /* define a sane saved_rect so that the user can unmaximize or
-           * make unfullscreen to something reasonable.
+          /* define a sane saved_rect so that the user can unmaximize to
+           * something reasonable.
           */
          if (info->current.width >= info->work_area_monitor.width)
            {
@@ -525,15 +524,6 @@ place_window_if_needed(MetaWindow     *window,
                (window->maximize_vertically_after_placement ?
                 META_MAXIMIZE_VERTICAL : 0), &info->current);

-          if (window->fullscreen_after_placement)
-            {
-              window->saved_rect = info->current;
-              window->fullscreen = TRUE;
-              window->fullscreen_after_placement = FALSE;
-
-              g_object_notify (G_OBJECT (window), "fullscreen");
-            }
-
          window->maximize_horizontally_after_placement = FALSE;
          window->maximize_vertically_after_placement = FALSE;
        }
--- a/src/core/core.c
+++ b/src/core/core.c
@@ -172,18 +172,6 @@ meta_core_toggle_maximize (Display *xdisplay,
    meta_window_maximize (window, META_MAXIMIZE_BOTH);
 }

-void
-meta_core_change_workspace (Display *xdisplay,
-                            Window   frame_xwindow,
-                            int      new_workspace)
-{
-  MetaWindow *window = get_window (xdisplay, frame_xwindow);
-
-  meta_window_change_workspace (window,
-                                meta_screen_get_workspace_by_index (window->screen,
-                                                                    new_workspace));
-}
-
 void
 meta_core_show_window_menu (Display            *xdisplay,
                            Window              frame_xwindow,
@@ -217,19 +205,6 @@ meta_core_show_window_menu_for_rect (Display            *xdisplay,
  meta_window_show_menu_for_rect (window, menu, rect);
 }

-const char*
-meta_core_get_workspace_name_with_index (Display *xdisplay,
-                                         Window   xroot,
-                                         int      index)
-{
-  MetaDisplay *display;
-  MetaWorkspace *workspace;
-
-  display = meta_display_for_x_display (xdisplay);
-  workspace = meta_screen_get_workspace_by_index (display->screen, index);
-  return workspace ? meta_workspace_get_name (workspace) : NULL;
-}
-
 gboolean
 meta_core_begin_grab_op (Display    *xdisplay,
                         Window      frame_xwindow,
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -41,15 +41,6 @@ void meta_core_toggle_maximize_horizontally  (Display *xdisplay,
                                              Window   frame_xwindow);
 void meta_core_toggle_maximize_vertically    (Display *xdisplay,
                                              Window   frame_xwindow);
-void meta_core_change_workspace (Display *xdisplay,
-                                 Window   frame_xwindow,
-                                 int      new_workspace);
-
-int meta_core_get_frame_workspace (Display *xdisplay,
-                                   Window frame_xwindow);
-const char* meta_core_get_workspace_name_with_index (Display *xdisplay,
-                                                     Window xroot,
-                                                     int    index);

 void meta_core_show_window_menu (Display            *xdisplay,
                                 Window              frame_xwindow,
--- a/src/core/delete.c
+++ b/src/core/delete.c
@@ -160,12 +160,7 @@ void
 meta_window_set_alive (MetaWindow *window,
                       gboolean    is_alive)
 {
-  if (window->is_alive == is_alive)
-    return;
-
-  window->is_alive = is_alive;
-
-  if (window->is_alive)
+  if (is_alive)
    kill_delete_dialog (window);
  else
    show_delete_dialog (window, CurrentTime);
@@ -185,34 +180,6 @@ meta_window_delete (MetaWindow  *window,
  META_WINDOW_GET_CLASS (window)->delete (window, timestamp);

  meta_window_check_alive (window, timestamp);
-
-  if (window->has_focus)
-    {
-      /* FIXME Clean this up someday
-       * http://bugzilla.gnome.org/show_bug.cgi?id=108706
-       */
-#if 0
-      /* This is unfortunately going to result in weirdness
-       * if the window doesn't respond to the delete event.
-       * I don't know how to avoid that though.
-       */
-      meta_topic (META_DEBUG_FOCUS,
-                  "Focusing default window because focus window %s was deleted/killed\n",
-                  window->desc);
-      meta_workspace_focus_default_window (window->screen->active_workspace,
-                                           window);
-#else
-      meta_topic (META_DEBUG_FOCUS,
-                  "Not unfocusing %s on delete/kill\n",
-                  window->desc);
-#endif
-    }
-  else
-    {
-      meta_topic (META_DEBUG_FOCUS,
-                  "Window %s was deleted/killed but didn't have focus\n",
-                  window->desc);
-    }
 }

 void
--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -35,6 +35,7 @@
 #include <meta/boxes.h>
 #include <meta/display.h>
 #include "keybindings-private.h"
+#include "startup-notification-private.h"
 #include "meta-gesture-tracker-private.h"
 #include <meta/prefs.h>
 #include <meta/barrier.h>
@@ -121,7 +122,7 @@ struct _MetaDisplay
   * class is constructed.
   */
 #define item(x)  Atom atom_##x;
-#include <meta/atomnames.h>
+#include <x11/atomnames.h>
 #undef item

  /* The window and serial of the most recent FocusIn event. */
@@ -217,9 +218,6 @@ struct _MetaDisplay
  guint       grab_have_pointer : 1;
  guint       grab_have_keyboard : 1;
  guint       grab_frame_action : 1;
-  /* During a resize operation, the directions in which we've broken
-   * out of the initial maximization state */
-  guint       grab_resize_unmaximize : 2; /* MetaMaximizeFlags */
  MetaRectangle grab_initial_window_pos;
  int         grab_initial_x, grab_initial_y;  /* These are only relevant for */
  gboolean    grab_threshold_movement_reached; /* raise_on_click == FALSE.    */
@@ -279,9 +277,8 @@ struct _MetaDisplay
  int xinput_event_base;
  int xinput_opcode;

-#ifdef HAVE_STARTUP_NOTIFICATION
-  SnDisplay *sn_display;
-#endif
+  MetaStartupNotification *startup_notification;
+
  int xsync_event_base;
  int xsync_error_base;
  int shape_event_base;
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -46,7 +46,7 @@
 #include <meta/compositor.h>
 #include <meta/compositor-mutter.h>
 #include <X11/Xatom.h>
-#include "mutter-enum-types.h"
+#include <meta/meta-enum-types.h>
 #include "meta-idle-monitor-dbus.h"
 #include "meta-cursor-tracker-private.h"
 #include <meta/meta-backend.h>
@@ -400,28 +400,6 @@ meta_display_remove_pending_pings_for_window (MetaDisplay *display,
 }


-#ifdef HAVE_STARTUP_NOTIFICATION
-static void
-sn_error_trap_push (SnDisplay *sn_display,
-                    Display   *xdisplay)
-{
-  MetaDisplay *display;
-  display = meta_display_for_x_display (xdisplay);
-  if (display != NULL)
-    meta_error_trap_push (display);
-}
-
-static void
-sn_error_trap_pop (SnDisplay *sn_display,
-                   Display   *xdisplay)
-{
-  MetaDisplay *display;
-  display = meta_display_for_x_display (xdisplay);
-  if (display != NULL)
-    meta_error_trap_pop (display);
-}
-#endif
-
 static void
 enable_compositor (MetaDisplay *display)
 {
@@ -527,6 +505,20 @@ gesture_tracker_state_changed (MetaGestureTracker   *tracker,
    }
 }

+static void
+on_startup_notification_changed (MetaStartupNotification *sn,
+                                 gpointer                 sequence,
+                                 MetaDisplay             *display)
+{
+  if (!display->screen)
+    return;
+
+  g_slist_free (display->screen->startup_sequences);
+  display->screen->startup_sequences =
+    meta_startup_notification_get_sequences (display->startup_notification);
+  g_signal_emit_by_name (display->screen, "startup-sequence-changed", sequence);
+}
+
 /**
 * meta_display_open:
 *
@@ -547,9 +539,9 @@ meta_display_open (void)
  guint32 timestamp;

  /* A list of all atom names, so that we can intern them in one go. */
-  char *atom_names[] = {
+  const char *atom_names[] = {
 #define item(x) #x,
-#include <meta/atomnames.h>
+#include <x11/atomnames.h>
 #undef item
  };
  Atom atoms[G_N_ELEMENTS(atom_names)];
@@ -605,14 +597,13 @@ meta_display_open (void)
  meta_prefs_add_listener (prefs_changed_callback, display);

  meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
-  XInternAtoms (display->xdisplay, atom_names, G_N_ELEMENTS (atom_names),
+  XInternAtoms (display->xdisplay, (char **)atom_names, G_N_ELEMENTS (atom_names),
                False, atoms);
-  {
-    int i = 0;
+
+  i = 0;
 #define item(x) display->atom_##x = atoms[i++];
-#include <meta/atomnames.h>
+#include <x11/atomnames.h>
 #undef item
-  }

  display->prop_hooks = NULL;
  meta_display_init_window_prop_hooks (display);
@@ -631,12 +622,6 @@ meta_display_open (void)

  display->screen = NULL;

-#ifdef HAVE_STARTUP_NOTIFICATION
-  display->sn_display = sn_display_new (display->xdisplay,
-                                        sn_error_trap_push,
-                                        sn_error_trap_pop);
-#endif
-
  /* Get events */
  meta_display_init_events (display);
  meta_display_init_events_x11 (display);
@@ -917,6 +902,10 @@ meta_display_open (void)

  display->screen = screen;

+  display->startup_notification = meta_startup_notification_get (display);
+  g_signal_connect (display->startup_notification, "changed",
+                    G_CALLBACK (on_startup_notification_changed), display);
+
  meta_screen_init_workspaces (screen);

  enable_compositor (display);
@@ -1101,6 +1090,7 @@ meta_display_close (MetaDisplay *display,

  meta_display_remove_autoraise_callback (display);

+  g_clear_object (&display->startup_notification);
  g_clear_object (&display->gesture_tracker);

  if (display->focus_timeout_id)
@@ -1113,14 +1103,6 @@ meta_display_close (MetaDisplay *display,

  meta_screen_free (display->screen, timestamp);

-#ifdef HAVE_STARTUP_NOTIFICATION
-  if (display->sn_display)
-    {
-      sn_display_unref (display->sn_display);
-      display->sn_display = NULL;
-    }
-#endif
-
  /* Must be after all calls to meta_window_unmanage() since they
   * unregister windows
   */
@@ -1922,7 +1904,6 @@ meta_display_begin_grab_op (MetaDisplay *display,
  display->grab_last_moveresize_time.tv_usec = 0;
  display->grab_last_user_action_was_snap = FALSE;
  display->grab_frame_action = frame_action;
-  display->grab_resize_unmaximize = 0;

  meta_display_update_cursor (display);

@@ -1965,9 +1946,12 @@ meta_display_end_grab_op (MetaDisplay *display,
  meta_topic (META_DEBUG_WINDOW_OPS,
              "Ending grab op %u at time %u\n", grab_op, timestamp);

-  if (display->event_route == META_EVENT_ROUTE_NORMAL)
+  if (display->event_route == META_EVENT_ROUTE_NORMAL ||
+      display->event_route == META_EVENT_ROUTE_COMPOSITOR_GRAB)
    return;

+  g_assert (grab_window != NULL);
+
  g_signal_emit (display, display_signals[GRAB_OP_END], 0,
                 display->screen, grab_window, grab_op);

--- a/src/core/events.c
+++ b/src/core/events.c
@@ -40,6 +40,13 @@
 #endif
 #include "meta-surface-actor.h"

+#define IS_GESTURE_EVENT(e) ((e)->type == CLUTTER_TOUCHPAD_SWIPE || \
+                             (e)->type == CLUTTER_TOUCHPAD_PINCH || \
+                             (e)->type == CLUTTER_TOUCH_BEGIN || \
+                             (e)->type == CLUTTER_TOUCH_UPDATE || \
+                             (e)->type == CLUTTER_TOUCH_END || \
+                             (e)->type == CLUTTER_TOUCH_CANCEL)
+
 static MetaWindow *
 get_window_for_event (MetaDisplay        *display,
                      const ClutterEvent *event)
@@ -93,6 +100,15 @@ handle_idletime_for_event (const ClutterEvent *event)
      if (device == NULL)
        return;

+      if (event->any.flags & CLUTTER_EVENT_FLAG_SYNTHETIC ||
+          event->type == CLUTTER_ENTER ||
+          event->type == CLUTTER_LEAVE ||
+          event->type == CLUTTER_STAGE_STATE ||
+          event->type == CLUTTER_DESTROY_NOTIFY ||
+          event->type == CLUTTER_CLIENT_MESSAGE ||
+          event->type == CLUTTER_DELETE)
+        return;
+
      device_id = clutter_input_device_get_device_id (device);

      core_monitor = meta_idle_monitor_get_core ();
@@ -166,10 +182,25 @@ meta_display_handle_event (MetaDisplay        *display,
  sequence = clutter_event_get_event_sequence (event);

  /* Set the pointer emulating sequence on touch begin, if eligible */
-  if (event->type == CLUTTER_TOUCH_BEGIN &&
-      !display->pointer_emulating_sequence &&
-      sequence_is_pointer_emulated (display, event))
-    display->pointer_emulating_sequence = sequence;
+  if (event->type == CLUTTER_TOUCH_BEGIN)
+    {
+      if (sequence_is_pointer_emulated (display, event))
+        {
+          /* This is the new pointer emulating sequence */
+          display->pointer_emulating_sequence = sequence;
+        }
+      else if (display->pointer_emulating_sequence == sequence)
+        {
+          /* This sequence was "pointer emulating" in a prior incarnation,
+           * but now it isn't. We unset the pointer emulating sequence at
+           * this point so the current sequence is not mistaken as pointer
+           * emulating, while we've ensured that it's been deemed
+           * "pointer emulating" throughout all of the event processing
+           * of the previous incarnation.
+           */
+          display->pointer_emulating_sequence = NULL;
+        }
+    }

 #ifdef HAVE_WAYLAND
  MetaWaylandCompositor *compositor = NULL;
@@ -190,8 +221,9 @@ meta_display_handle_event (MetaDisplay        *display,

  if (meta_is_wayland_compositor () && event->type == CLUTTER_MOTION)
    {
-      MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (NULL);
-      meta_cursor_tracker_update_position (tracker, event->motion.x, event->motion.y);
+      meta_cursor_tracker_update_position (meta_cursor_tracker_get_for_screen (NULL),
+                                           event->motion.x, event->motion.y);
+      display->monitor_cache_invalidated = TRUE;
    }

  handle_idletime_for_event (event);
@@ -255,15 +287,18 @@ meta_display_handle_event (MetaDisplay        *display,

  if (window)
    {
-      if (!clutter_event_get_event_sequence (event))
-        {
-          /* Swallow all non-touch events on windows that come our way.
-           * Touch events that reach here aren't yet in an accepted state,
-           * so Clutter must see them to maybe trigger gestures into
-           * recognition.
-           */
-          bypass_clutter = TRUE;
-        }
+      /* Events that are likely to trigger compositor gestures should
+       * be known to clutter so they can propagate along the hierarchy.
+       * Gesture-wise, there's two groups of events we should be getting
+       * here:
+       * - CLUTTER_TOUCH_* with a touch sequence that's not yet accepted
+       *   by the gesture tracker, these might trigger gesture actions
+       *   into recognition. Already accepted touch sequences are handled
+       *   directly by meta_gesture_tracker_handle_event().
+       * - CLUTTER_TOUCHPAD_* events over windows. These can likewise
+       *   trigger ::captured-event handlers along the way.
+       */
+      bypass_clutter = !IS_GESTURE_EVENT (event);

      meta_window_handle_ungrabbed_event (window, event);

@@ -315,11 +350,6 @@ meta_display_handle_event (MetaDisplay        *display,
    }
 #endif

-  /* Unset the pointer emulating sequence after its end event is processed */
-  if (event->type == CLUTTER_TOUCH_END &&
-      display->pointer_emulating_sequence == sequence)
-    display->pointer_emulating_sequence = NULL;
-
  display->current_time = CurrentTime;
  return bypass_clutter;
 }
--- a/src/core/keybindings-private.h
+++ b/src/core/keybindings-private.h
@@ -30,6 +30,7 @@
 #include <gio/gio.h>
 #include <meta/keybindings.h>
 #include <xkbcommon/xkbcommon.h>
+#include "meta-accel-parse.h"

 typedef struct _MetaKeyHandler MetaKeyHandler;
 struct _MetaKeyHandler
@@ -53,7 +54,6 @@ typedef struct _MetaResolvedKeyCombo {
 * @keycode: keycode
 * @modifiers: modifiers
 */
-typedef struct _MetaKeyCombo MetaKeyCombo;
 struct _MetaKeyCombo
 {
  unsigned int keysym;
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -188,7 +188,7 @@ reload_modmap (MetaKeyBindingManager *keys)

  /* Modifiers to find. */
  struct {
-    char *name;
+    const char *name;
    xkb_mod_mask_t *mask_p;
  } mods[] = {
    { "ScrollLock", &scroll_lock_mask },
@@ -3186,7 +3186,7 @@ handle_move_to_monitor (MetaDisplay    *display,
  gint which = binding->handler->data;
  const MetaMonitorInfo *current, *new;

-  current = meta_screen_get_monitor_for_window (screen, window);
+  current = window->monitor;
  new = meta_screen_get_monitor_neighbor (screen, current->number, which);

  if (new == NULL)
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -80,6 +80,10 @@

 #ifdef HAVE_WAYLAND
 #include "wayland/meta-wayland.h"
+# endif
+
+#if defined(HAVE_NATIVE_BACKEND) && defined(HAVE_WAYLAND)
+#include <systemd/sd-login.h>
 #endif

 /*
@@ -291,6 +295,95 @@ on_sigterm (gpointer user_data)
  return G_SOURCE_REMOVE;
 }

+#if defined(HAVE_WAYLAND) && defined(HAVE_NATIVE_BACKEND)
+static char *
+find_logind_session_type (void)
+{
+  char **sessions;
+  char *session_id;
+  char *session_type;
+  int ret, i;
+
+  ret = sd_pid_get_session (0, &session_id);
+
+  if (ret == 0 && session_id != NULL)
+    {
+      ret = sd_session_get_type (session_id, &session_type);
+      free (session_id);
+
+      if (ret < 0)
+        session_type = NULL;
+
+      goto out;
+    }
+  session_type = NULL;
+
+  ret = sd_uid_get_sessions (getuid (), TRUE, &sessions);
+
+  if (ret < 0 || sessions == NULL)
+    goto out;
+
+  for (i = 0; sessions[i] != NULL; i++)
+    {
+      ret = sd_session_get_type (sessions[i], &session_type);
+
+      if (ret < 0)
+        continue;
+
+      if (g_strcmp0 (session_type, "x11") == 0||
+          g_strcmp0 (session_type, "wayland") == 0)
+        break;
+
+      g_clear_pointer (&session_type, (GDestroyNotify) free);
+    }
+
+  for (i = 0; sessions[i] != NULL; i++)
+    free (sessions[i]);
+  free (sessions);
+
+out:
+  return session_type;
+}
+
+static gboolean
+check_for_wayland_session_type (void)
+{
+  char *session_type = NULL;
+  gboolean is_wayland = FALSE;
+
+  session_type = find_logind_session_type ();
+
+  if (session_type != NULL)
+    {
+      is_wayland = g_strcmp0 (session_type, "wayland") == 0;
+      free (session_type);
+    }
+
+  return is_wayland;
+}
+#endif
+
+static void
+init_backend (void)
+{
+  gboolean session_type_is_wayland = FALSE;
+
+#if defined(HAVE_WAYLAND) && defined(HAVE_NATIVE_BACKEND)
+  session_type_is_wayland = check_for_wayland_session_type ();
+#endif
+
+#if defined(CLUTTER_WINDOWING_EGL) && defined(HAVE_NATIVE_BACKEND)
+  if (opt_display_server || session_type_is_wayland)
+    clutter_set_windowing_backend (CLUTTER_WINDOWING_EGL);
+  else
+#endif
+    clutter_set_windowing_backend (CLUTTER_WINDOWING_X11);
+
+#ifdef HAVE_WAYLAND
+  meta_set_is_wayland_compositor (opt_wayland || session_type_is_wayland);
+#endif
+}
+
 /**
 * meta_init: (skip)
 *
@@ -323,16 +416,7 @@ meta_init (void)
  if (g_getenv ("MUTTER_DEBUG"))
    meta_set_debugging (TRUE);

-#if defined(CLUTTER_WINDOWING_EGL) && defined(HAVE_NATIVE_BACKEND)
-  if (opt_display_server)
-    clutter_set_windowing_backend (CLUTTER_WINDOWING_EGL);
-  else
-#endif
-    clutter_set_windowing_backend (CLUTTER_WINDOWING_X11);
-
-#ifdef HAVE_WAYLAND
-  meta_set_is_wayland_compositor (opt_wayland);
-#endif
+  init_backend ();

  if (g_get_home_dir ())
    if (chdir (g_get_home_dir ()) < 0)
--- a/src/core/meta-accel-parse.c
+++ b/src/core/meta-accel-parse.c
@@ -176,7 +176,6 @@ static gboolean
 accelerator_parse (const gchar         *accelerator,
                   MetaKeyCombo        *combo)
 {
-  gboolean error = FALSE;
  guint keyval, keycode;
  MetaVirtualModifier mods;
  gint len;
@@ -186,10 +185,7 @@ accelerator_parse (const gchar         *accelerator,
  combo->modifiers = 0;

  if (accelerator == NULL)
-    {
-      error = TRUE;
-      goto out;
-    }
+    return FALSE;

  keyval = 0;
  keycode = 0;
@@ -310,10 +306,7 @@ accelerator_parse (const gchar         *accelerator,
                  g_free (with_xf86);

                  if (keyval == XKB_KEY_NoSymbol)
-                    {
-                      error = TRUE;
-                      goto out;
-                    }
+                    return FALSE;
                }
 	    }

@@ -322,14 +315,10 @@ accelerator_parse (const gchar         *accelerator,
        }
    }

-out:
-  if (error)
-    return FALSE;
-
+ out:
  combo->keysym = keyval;
  combo->keycode = keycode;
  combo->modifiers = mods;
-
  return TRUE;
 }

--- a/src/core/meta-border.c
+++ b/src/core/meta-border.c
@@ -0,0 +1,154 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#include "config.h"
+
+#include "core/meta-border.h"
+
+#include <math.h>
+
+static inline float
+meta_vector2_cross_product (const MetaVector2 a,
+                            const MetaVector2 b)
+{
+  return a.x * b.y - a.y * b.x;
+}
+
+static inline MetaVector2
+meta_vector2_add (const MetaVector2 a,
+                  const MetaVector2 b)
+{
+  return (MetaVector2) {
+    .x = a.x + b.x,
+    .y = a.y + b.y,
+  };
+}
+
+static inline MetaVector2
+meta_vector2_multiply_constant (const float       c,
+                                const MetaVector2 a)
+{
+  return (MetaVector2) {
+    .x = c * a.x,
+    .y = c * a.y,
+  };
+}
+
+gboolean
+meta_line2_intersects_with (const MetaLine2 *line1,
+                            const MetaLine2 *line2,
+                            MetaVector2     *intersection)
+{
+  MetaVector2 p = line1->a;
+  MetaVector2 r = meta_vector2_subtract (line1->b, line1->a);
+  MetaVector2 q = line2->a;
+  MetaVector2 s = meta_vector2_subtract (line2->b, line2->a);
+  float rxs;
+  float sxr;
+  float t;
+  float u;
+
+  /*
+   * The line (p, r) and (q, s) intersects where
+   *
+   *   p + t r = q + u s
+   *
+   * Calculate t:
+   *
+   *   (p + t r) × s = (q + u s) × s
+   *   p × s + t (r × s) = q × s + u (s × s)
+   *   p × s + t (r × s) = q × s
+   *   t (r × s) = q × s - p × s
+   *   t (r × s) = (q - p) × s
+   *   t = ((q - p) × s) / (r × s)
+   *
+   * Using the same method, for u we get:
+   *
+   *   u = ((p - q) × r) / (s × r)
+   */
+
+  rxs = meta_vector2_cross_product (r, s);
+  sxr = meta_vector2_cross_product (s, r);
+
+  /* If r × s = 0 then the lines are either parallel or collinear. */
+  if (fabsf (rxs) < FLT_MIN)
+    return FALSE;
+
+  t = meta_vector2_cross_product (meta_vector2_subtract (q, p), s) / rxs;
+  u = meta_vector2_cross_product (meta_vector2_subtract (p, q), r) / sxr;
+
+  /* The lines only intersect if 0 ≤ t ≤ 1 and 0 ≤ u ≤ 1. */
+  if (t < 0.0 || t > 1.0 || u < 0.0 || u > 1.0)
+    return FALSE;
+
+  *intersection = meta_vector2_add (p, meta_vector2_multiply_constant (t, r));
+
+  return TRUE;
+}
+
+gboolean
+meta_border_is_horizontal (MetaBorder *border)
+{
+  return border->line.a.y == border->line.b.y;
+}
+
+gboolean
+meta_border_is_blocking_directions (MetaBorder               *border,
+                                    MetaBorderMotionDirection directions)
+{
+  if (meta_border_is_horizontal (border))
+    {
+      if ((directions & (META_BORDER_MOTION_DIRECTION_POSITIVE_Y |
+                         META_BORDER_MOTION_DIRECTION_NEGATIVE_Y)) == 0)
+        return FALSE;
+    }
+  else
+    {
+      if ((directions & (META_BORDER_MOTION_DIRECTION_POSITIVE_X |
+                         META_BORDER_MOTION_DIRECTION_NEGATIVE_X)) == 0)
+        return FALSE;
+    }
+
+  return (~border->blocking_directions & directions) != directions;
+}
+
+unsigned int
+meta_border_get_allows_directions (MetaBorder *border)
+{
+  return ~border->blocking_directions &
+    (META_BORDER_MOTION_DIRECTION_POSITIVE_X |
+     META_BORDER_MOTION_DIRECTION_POSITIVE_Y |
+     META_BORDER_MOTION_DIRECTION_NEGATIVE_X |
+     META_BORDER_MOTION_DIRECTION_NEGATIVE_Y);
+}
+
+void
+meta_border_set_allows_directions (MetaBorder *border, unsigned int directions)
+{
+  border->blocking_directions =
+    ~directions & (META_BORDER_MOTION_DIRECTION_POSITIVE_X |
+                   META_BORDER_MOTION_DIRECTION_POSITIVE_Y |
+                   META_BORDER_MOTION_DIRECTION_NEGATIVE_X |
+                   META_BORDER_MOTION_DIRECTION_NEGATIVE_Y);
+}
--- a/src/core/meta-border.h
+++ b/src/core/meta-border.h
@@ -0,0 +1,84 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#ifndef META_BORDER_H
+#define META_BORDER_H
+
+#include <glib.h>
+
+typedef enum
+{
+  META_BORDER_MOTION_DIRECTION_POSITIVE_X = 1 << 0,
+  META_BORDER_MOTION_DIRECTION_POSITIVE_Y = 1 << 1,
+  META_BORDER_MOTION_DIRECTION_NEGATIVE_X = 1 << 2,
+  META_BORDER_MOTION_DIRECTION_NEGATIVE_Y = 1 << 3,
+} MetaBorderMotionDirection;
+
+typedef struct _MetaVector2
+{
+  float x;
+  float y;
+} MetaVector2;
+
+typedef struct _MetaLine2
+{
+  MetaVector2 a;
+  MetaVector2 b;
+} MetaLine2;
+
+typedef struct _MetaBorder
+{
+  MetaLine2 line;
+  MetaBorderMotionDirection blocking_directions;
+} MetaBorder;
+
+static inline MetaVector2
+meta_vector2_subtract (const MetaVector2 a,
+                       const MetaVector2 b)
+{
+  return (MetaVector2) {
+    .x = a.x - b.x,
+    .y = a.y - b.y,
+  };
+}
+
+gboolean
+meta_line2_intersects_with (const MetaLine2 *line1,
+                            const MetaLine2 *line2,
+                            MetaVector2     *intersection);
+
+gboolean
+meta_border_is_horizontal (MetaBorder *border);
+
+gboolean
+meta_border_is_blocking_directions (MetaBorder               *border,
+                                    MetaBorderMotionDirection directions);
+
+unsigned int
+meta_border_get_allows_directions (MetaBorder *border);
+
+void
+meta_border_set_allows_directions (MetaBorder *border, unsigned int directions);
+
+#endif /* META_BORDER_H */
--- a/src/core/mutter.c
+++ b/src/core/mutter.c
@@ -44,7 +44,7 @@ print_version (const gchar    *option_name,
  exit (0);
 }

-static gchar *plugin = "default";
+static const char *plugin = "default";

 GOptionEntry mutter_options[] = {
  {
--- a/src/core/prefs.c
+++ b/src/core/prefs.c
@@ -96,6 +96,10 @@ static gboolean bell_is_audible = TRUE;
 static gboolean gnome_accessibility = FALSE;
 static gboolean gnome_animations = TRUE;
 static char *cursor_theme = NULL;
+/* cursor_size will, when running as an X11 compositing window manager, be the
+ * actual cursor size, multiplied with the global window scaling factor. On
+ * Wayland, it will be the actual cursor size retrieved from gsettings.
+ */
 static int   cursor_size = 24;
 static int   draggable_border_width = 10;
 static int   drag_threshold;
@@ -123,6 +127,9 @@ static gboolean update_binding         (MetaKeyPref *binding,
 static gboolean update_key_binding     (const char  *key,
                                        gchar      **strokes);

+static void wayland_settings_changed (GSettings      *settings,
+                                      gchar          *key,
+                                      gpointer        data);
 static void settings_changed (GSettings      *settings,
                              gchar          *key,
                              gpointer        data);
@@ -134,9 +141,10 @@ static void shell_shows_app_menu_changed (GtkSettings *settings,
                                          GParamSpec  *pspec,
                                          gpointer     data);

-static void update_cursor_size (GtkSettings *settings,
-                                GParamSpec *pspec,
-                                gpointer data);
+static void update_cursor_size_from_gtk (GtkSettings *settings,
+                                         GParamSpec *pspec,
+                                         gpointer data);
+static void update_cursor_size (void);

 static void queue_changed (MetaPreference  pref);

@@ -161,8 +169,8 @@ typedef struct

 typedef struct
 {
-  char *key;
-  char *schema;
+  const char *key;
+  const char *schema;
  MetaPreference pref;
 } MetaBasePreference;

@@ -963,14 +971,18 @@ meta_prefs_init (void)
                    G_CALLBACK (settings_changed), NULL);
  g_signal_connect (settings, "changed::" KEY_GNOME_CURSOR_THEME,
                    G_CALLBACK (settings_changed), NULL);
+  if (meta_is_wayland_compositor ())
+    g_signal_connect (settings, "changed::cursor-size",
+                      G_CALLBACK (wayland_settings_changed), NULL);
  g_hash_table_insert (settings_schemas, g_strdup (SCHEMA_INTERFACE), settings);

  g_signal_connect (gtk_settings_get_default (),
                    "notify::gtk-shell-shows-app-menu",
                    G_CALLBACK (shell_shows_app_menu_changed), NULL);

-  g_signal_connect (gtk_settings_get_default (), "notify::gtk-cursor-theme-size",
-                    G_CALLBACK (update_cursor_size), NULL);
+  if (!meta_is_wayland_compositor ())
+    g_signal_connect (gtk_settings_get_default (), "notify::gtk-cursor-theme-size",
+                      G_CALLBACK (update_cursor_size_from_gtk), NULL);

  settings = g_settings_new (SCHEMA_INPUT_SOURCES);
  g_signal_connect (settings, "changed::" KEY_XKB_OPTIONS,
@@ -992,7 +1004,7 @@ meta_prefs_init (void)
  handle_preference_init_string_array ();
  handle_preference_init_int ();

-  update_cursor_size (gtk_settings_get_default (), NULL, NULL);
+  update_cursor_size ();
  shell_shows_app_menu_changed (gtk_settings_get_default (), NULL, NULL);

  init_bindings ();
@@ -1133,6 +1145,20 @@ meta_prefs_override_preference_schema (const char *key, const char *schema)
 /****************************************************************************/


+static void
+wayland_settings_changed (GSettings      *settings,
+                          gchar          *key,
+                          gpointer        data)
+{
+  GVariant *value = g_settings_get_value (settings, key);
+  const GVariantType *type = g_variant_get_type (value);
+
+  g_return_if_fail (g_variant_type_equal (type, G_VARIANT_TYPE_INT32));
+  g_return_if_fail (g_str_equal (key, "cursor-size"));
+
+  update_cursor_size ();
+}
+
 static void
 settings_changed (GSettings *settings,
                  gchar *key,
@@ -1216,9 +1242,29 @@ shell_shows_app_menu_changed (GtkSettings *settings,
 }

 static void
-update_cursor_size (GtkSettings *settings,
-                    GParamSpec *pspec,
-                    gpointer data)
+update_cursor_size (void)
+{
+  if (meta_is_wayland_compositor ())
+    {
+      /* When running as a Wayland compositor, since we size of the cursor
+       * depends on what output it is on, we cannot use the GTK+
+       * "gtk-cursor-theme-size" setting because it has already been multiplied
+       * by the primary monitor scale. So, instead get the non-premultiplied
+       * cursor size value directly from gsettings instead.
+       */
+      cursor_size =
+        g_settings_get_int (SETTINGS (SCHEMA_INTERFACE), "cursor-size");
+    }
+  else
+    {
+      update_cursor_size_from_gtk (gtk_settings_get_default (), NULL, NULL);
+    }
+}
+
+static void
+update_cursor_size_from_gtk (GtkSettings *settings,
+                             GParamSpec *pspec,
+                             gpointer data)
 {
  GdkScreen *screen = gdk_screen_get_default ();
  GValue value = G_VALUE_INIT;
@@ -1431,42 +1477,11 @@ button_function_from_string (const char *str)
    return META_BUTTON_FUNCTION_MAXIMIZE;
  else if (strcmp (str, "close") == 0)
    return META_BUTTON_FUNCTION_CLOSE;
-  else if (strcmp (str, "shade") == 0)
-    return META_BUTTON_FUNCTION_SHADE;
-  else if (strcmp (str, "above") == 0)
-    return META_BUTTON_FUNCTION_ABOVE;
-  else if (strcmp (str, "stick") == 0)
-    return META_BUTTON_FUNCTION_STICK;
  else
    /* don't know; give up */
    return META_BUTTON_FUNCTION_LAST;
 }

-static MetaButtonFunction
-button_opposite_function (MetaButtonFunction ofwhat)
-{
-  switch (ofwhat)
-    {
-    case META_BUTTON_FUNCTION_SHADE:
-      return META_BUTTON_FUNCTION_UNSHADE;
-    case META_BUTTON_FUNCTION_UNSHADE:
-      return META_BUTTON_FUNCTION_SHADE;
-
-    case META_BUTTON_FUNCTION_ABOVE:
-      return META_BUTTON_FUNCTION_UNABOVE;
-    case META_BUTTON_FUNCTION_UNABOVE:
-      return META_BUTTON_FUNCTION_ABOVE;
-
-    case META_BUTTON_FUNCTION_STICK:
-      return META_BUTTON_FUNCTION_UNSTICK;
-    case META_BUTTON_FUNCTION_UNSTICK:
-      return META_BUTTON_FUNCTION_STICK;
-
-    default:
-      return META_BUTTON_FUNCTION_LAST;
-    }
-}
-
 static gboolean
 button_layout_handler (GVariant *value,
                       gpointer *result,
@@ -1510,12 +1525,6 @@ button_layout_handler (GVariant *value,
          if (i > 0 && strcmp("spacer", buttons[b]) == 0)
            {
              new_layout.left_buttons_has_spacer[i-1] = TRUE;
-              f = button_opposite_function (f);
-
-              if (f != META_BUTTON_FUNCTION_LAST)
-                {
-                  new_layout.left_buttons_has_spacer[i-2] = TRUE;
-                }
            }
          else
            {
@@ -1524,11 +1533,6 @@ button_layout_handler (GVariant *value,
                  new_layout.left_buttons[i] = f;
                  used[f] = TRUE;
                  ++i;
-
-                  f = button_opposite_function (f);
-
-                  if (f != META_BUTTON_FUNCTION_LAST)
-                      new_layout.left_buttons[i++] = f;
                }
              else
                {
@@ -1572,11 +1576,6 @@ button_layout_handler (GVariant *value,
          if (i > 0 && strcmp("spacer", buttons[b]) == 0)
            {
              new_layout.right_buttons_has_spacer[i-1] = TRUE;
-              f = button_opposite_function (f);
-              if (f != META_BUTTON_FUNCTION_LAST)
-                {
-                  new_layout.right_buttons_has_spacer[i-2] = TRUE;
-                }
            }
          else
            {
@@ -1585,12 +1584,6 @@ button_layout_handler (GVariant *value,
                  new_layout.right_buttons[i] = f;
                  used[f] = TRUE;
                  ++i;
-
-                  f = button_opposite_function (f);
-
-                  if (f != META_BUTTON_FUNCTION_LAST)
-                      new_layout.right_buttons[i++] = f;
-
                }
              else
                {
--- a/src/core/screen-private.h
+++ b/src/core/screen-private.h
@@ -41,14 +41,6 @@
 typedef void (* MetaScreenWindowFunc) (MetaWindow *window,
                                       gpointer    user_data);

-typedef enum
-{
-  META_SCREEN_UP,
-  META_SCREEN_DOWN,
-  META_SCREEN_LEFT,
-  META_SCREEN_RIGHT
-} MetaScreenDirection;
-
 #define META_WIREFRAME_XOR_LINE_WIDTH 2

 struct _MetaScreen
@@ -93,11 +85,7 @@ struct _MetaScreen
  /* Cache the current monitor */
  int last_monitor_index;

-#ifdef HAVE_STARTUP_NOTIFICATION
-  SnMonitorContext *sn_context;
  GSList *startup_sequences;
-  guint startup_sequence_timeout;
-#endif

  Window wm_cm_selection_window;
  guint work_area_later;
@@ -157,8 +145,12 @@ const MetaMonitorInfo* meta_screen_get_current_monitor_info_for_pos   (MetaScree
                                                                       int y);
 const MetaMonitorInfo* meta_screen_get_monitor_for_rect   (MetaScreen    *screen,
                                                           MetaRectangle *rect);
-const MetaMonitorInfo* meta_screen_get_monitor_for_window (MetaScreen    *screen,
-                                                           MetaWindow    *window);
+const MetaMonitorInfo* meta_screen_calculate_monitor_for_window (MetaScreen    *screen,
+                                                                 MetaWindow    *window);
+
+const MetaMonitorInfo* meta_screen_get_monitor_for_point (MetaScreen    *screen,
+                                                          int            x,
+                                                          int            y);


 const MetaMonitorInfo* meta_screen_get_monitor_neighbor (MetaScreen *screen,
--- a/src/core/screen.c
+++ b/src/core/screen.c
@@ -40,9 +40,10 @@
 #include "keybindings-private.h"
 #include "stack.h"
 #include <meta/compositor.h>
-#include "mutter-enum-types.h"
+#include <meta/meta-enum-types.h>
 #include "core.h"
 #include "meta-cursor-tracker-private.h"
+#include "boxes-private.h"

 #include <X11/extensions/Xinerama.h>
 #include <X11/extensions/Xcomposite.h>
@@ -70,11 +71,6 @@ static void prefs_changed_callback (MetaPreference pref,
 static void set_desktop_geometry_hint (MetaScreen *screen);
 static void set_desktop_viewport_hint (MetaScreen *screen);

-#ifdef HAVE_STARTUP_NOTIFICATION
-static void meta_screen_sn_event   (SnMonitorEvent *event,
-                                    void           *user_data);
-#endif
-
 static void on_monitors_changed (MetaMonitorManager *manager,
                                 MetaScreen         *screen);

@@ -294,7 +290,7 @@ set_supported_hint (MetaScreen *screen)
  Atom atoms[] = {
 #define EWMH_ATOMS_ONLY
 #define item(x)  screen->display->atom_##x,
-#include <meta/atomnames.h>
+#include <x11/atomnames.h>
 #undef item
 #undef EWMH_ATOMS_ONLY

@@ -729,17 +725,6 @@ meta_screen_new (MetaDisplay *display,

  meta_prefs_add_listener (prefs_changed_callback, screen);

-#ifdef HAVE_STARTUP_NOTIFICATION
-  screen->sn_context =
-    sn_monitor_context_new (screen->display->sn_display,
-                            screen->number,
-                            meta_screen_sn_event,
-                            screen,
-                            NULL);
-  screen->startup_sequences = NULL;
-  screen->startup_sequence_timeout = 0;
-#endif
-
  meta_verbose ("Added screen %d ('%s') root 0x%lx\n",
                screen->number, screen->screen_name, screen->xroot);

@@ -750,7 +735,7 @@ void
 meta_screen_init_workspaces (MetaScreen *screen)
 {
  MetaWorkspace *current_workspace;
-  gulong current_workspace_index = 0;
+  uint32_t current_workspace_index = 0;
  guint32 timestamp;

  g_return_if_fail (META_IS_SCREEN (screen));
@@ -799,24 +784,6 @@ meta_screen_free (MetaScreen *screen,

  meta_screen_ungrab_keys (screen);

-#ifdef HAVE_STARTUP_NOTIFICATION
-  g_slist_foreach (screen->startup_sequences,
-                   (GFunc) sn_startup_sequence_unref, NULL);
-  g_slist_free (screen->startup_sequences);
-  screen->startup_sequences = NULL;
-
-  if (screen->startup_sequence_timeout != 0)
-    {
-      g_source_remove (screen->startup_sequence_timeout);
-      screen->startup_sequence_timeout = 0;
-    }
-  if (screen->sn_context)
-    {
-      sn_monitor_context_unref (screen->sn_context);
-      screen->sn_context = NULL;
-    }
-#endif
-
  meta_ui_free (screen->ui);

  meta_stack_free (screen->stack);
@@ -1166,7 +1133,7 @@ update_num_workspaces (MetaScreen *screen,
  if (meta_prefs_get_dynamic_workspaces ())
    {
      int n_items;
-      gulong *list;
+      uint32_t *list;

      n_items = 0;
      list = NULL;
@@ -1255,21 +1222,47 @@ update_num_workspaces (MetaScreen *screen,
  g_object_notify (G_OBJECT (screen), "n-workspaces");
 }

+static void
+root_cursor_prepare_at (MetaCursorSprite *cursor_sprite,
+                        int x,
+                        int y,
+                        MetaScreen *screen)
+{
+  const MetaMonitorInfo *monitor;
+
+  monitor = meta_screen_get_monitor_for_point (screen, x, y);
+
+  /* Reload the cursor texture if the scale has changed. */
+  meta_cursor_sprite_set_theme_scale (cursor_sprite, monitor->scale);
+}
+
+static void
+manage_root_cursor_sprite_scale (MetaScreen *screen,
+                                 MetaCursorSprite *cursor_sprite)
+{
+  g_signal_connect_object (cursor_sprite,
+                           "prepare-at",
+                           G_CALLBACK (root_cursor_prepare_at),
+                           screen,
+                           0);
+}
+
 void
 meta_screen_update_cursor (MetaScreen *screen)
 {
  MetaDisplay *display = screen->display;
  MetaCursor cursor = screen->current_cursor;
  Cursor xcursor;
-  MetaCursorReference *cursor_ref;
+  MetaCursorSprite *cursor_sprite;
  MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (screen);

-  cursor_ref = meta_cursor_reference_from_theme (cursor);
-  if (cursor_ref == NULL)
-    meta_fatal ("Could not find cursor. Perhaps set XCURSOR_PATH?");
+  cursor_sprite = meta_cursor_sprite_from_theme (cursor);

-  meta_cursor_tracker_set_root_cursor (tracker, cursor_ref);
-  meta_cursor_reference_unref (cursor_ref);
+  if (meta_is_wayland_compositor ())
+    manage_root_cursor_sprite_scale (screen, cursor_sprite);
+
+  meta_cursor_tracker_set_root_cursor (tracker, cursor_sprite);
+  g_object_unref (cursor_sprite);

  /* Set a cursor for X11 applications that don't specify their own */
  xcursor = meta_display_create_x_cursor (display, cursor);
@@ -1439,8 +1432,8 @@ meta_screen_get_monitor_for_rect (MetaScreen    *screen,
 }

 const MetaMonitorInfo*
-meta_screen_get_monitor_for_window (MetaScreen *screen,
-                                    MetaWindow *window)
+meta_screen_calculate_monitor_for_window (MetaScreen *screen,
+                                          MetaWindow *window)
 {
  MetaRectangle window_rect;

@@ -1457,6 +1450,25 @@ meta_screen_get_monitor_index_for_rect (MetaScreen    *screen,
  return monitor->number;
 }

+const MetaMonitorInfo *
+meta_screen_get_monitor_for_point (MetaScreen *screen,
+                                   int         x,
+                                   int         y)
+{
+  int i;
+
+  if (screen->n_monitor_infos == 1)
+    return &screen->monitor_infos[0];
+
+  for (i = 0; i < screen->n_monitor_infos; i++)
+    {
+      if (POINT_IN_RECT (x, y, screen->monitor_infos[i].rect))
+        return &screen->monitor_infos[i];
+    }
+
+  return NULL;
+}
+
 const MetaMonitorInfo*
 meta_screen_get_monitor_neighbor (MetaScreen         *screen,
                                  int                 which_monitor,
@@ -1490,6 +1502,16 @@ meta_screen_get_monitor_neighbor (MetaScreen         *screen,
  return NULL;
 }

+int
+meta_screen_get_monitor_neighbor_index (MetaScreen         *screen,
+                                        int                 which_monitor,
+                                        MetaScreenDirection direction)
+{
+  const MetaMonitorInfo *monitor;
+  monitor = meta_screen_get_monitor_neighbor (screen, which_monitor, direction);
+  return monitor ? monitor->number : -1;
+}
+
 void
 meta_screen_get_natural_monitor_list (MetaScreen *screen,
                                      int**       monitors_list,
@@ -1745,7 +1767,7 @@ meta_screen_get_monitor_geometry (MetaScreen    *screen,
 void
 meta_screen_update_workspace_layout (MetaScreen *screen)
 {
-  gulong *list;
+  uint32_t *list;
  int n_items;

  if (screen->workspace_layout_overridden)
@@ -2044,7 +2066,7 @@ meta_screen_queue_workarea_recalc (MetaScreen *screen)


 #ifdef WITH_VERBOSE_MODE
-static char *
+static const char *
 meta_screen_corner_to_string (MetaScreenCorner corner)
 {
  switch (corner)
@@ -2378,12 +2400,12 @@ on_monitors_changed (MetaMonitorManager *manager,
                       &changes);
    }

-  /* Queue a resize on all the windows */
-  meta_screen_foreach_window (screen, META_LIST_DEFAULT, meta_screen_resize_func, 0);
-
  /* Fix up monitor for all windows on this screen */
  meta_screen_foreach_window (screen, META_LIST_INCLUDE_OVERRIDE_REDIRECT, (MetaScreenWindowFunc) meta_window_update_for_monitors_changed, 0);

+  /* Queue a resize on all the windows */
+  meta_screen_foreach_window (screen, META_LIST_DEFAULT, meta_screen_resize_func, 0);
+
  meta_screen_queue_check_fullscreen (screen);

  g_signal_emit (screen, screen_signals[MONITORS_CHANGED], 0);
@@ -2482,208 +2504,6 @@ meta_screen_unshow_desktop (MetaScreen *screen)
  meta_screen_update_showing_desktop_hint (screen);
 }

-
-#ifdef HAVE_STARTUP_NOTIFICATION
-static gboolean startup_sequence_timeout (void *data);
-
-static void
-update_startup_feedback (MetaScreen *screen)
-{
-  if (screen->startup_sequences != NULL)
-    {
-      meta_topic (META_DEBUG_STARTUP,
-                  "Setting busy cursor\n");
-      meta_screen_set_cursor (screen, META_CURSOR_BUSY);
-    }
-  else
-    {
-      meta_topic (META_DEBUG_STARTUP,
-                  "Setting default cursor\n");
-      meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
-    }
-}
-
-static void
-add_sequence (MetaScreen        *screen,
-              SnStartupSequence *sequence)
-{
-  meta_topic (META_DEBUG_STARTUP,
-              "Adding sequence %s\n",
-              sn_startup_sequence_get_id (sequence));
-  sn_startup_sequence_ref (sequence);
-  screen->startup_sequences = g_slist_prepend (screen->startup_sequences,
-                                               sequence);
-
-  /* our timeout just polls every second, instead of bothering
-   * to compute exactly when we may next time out
-   */
-  if (screen->startup_sequence_timeout == 0)
-    {
-      screen->startup_sequence_timeout = g_timeout_add_seconds (1,
-                                                                startup_sequence_timeout,
-                                                                screen);
-      g_source_set_name_by_id (screen->startup_sequence_timeout,
-                               "[mutter] startup_sequence_timeout");
-    }
-
-  update_startup_feedback (screen);
-}
-
-static void
-remove_sequence (MetaScreen        *screen,
-                 SnStartupSequence *sequence)
-{
-  meta_topic (META_DEBUG_STARTUP,
-              "Removing sequence %s\n",
-              sn_startup_sequence_get_id (sequence));
-
-  screen->startup_sequences = g_slist_remove (screen->startup_sequences,
-                                              sequence);
-
-  if (screen->startup_sequences == NULL &&
-      screen->startup_sequence_timeout != 0)
-    {
-      g_source_remove (screen->startup_sequence_timeout);
-      screen->startup_sequence_timeout = 0;
-    }
-
-  update_startup_feedback (screen);
-
-  sn_startup_sequence_unref (sequence);
-}
-
-typedef struct
-{
-  GSList *list;
-  GTimeVal now;
-} CollectTimedOutData;
-
-/* This should be fairly long, as it should never be required unless
- * apps or .desktop files are buggy, and it's confusing if
- * OpenOffice or whatever seems to stop launching - people
- * might decide they need to launch it again.
- */
-#define STARTUP_TIMEOUT 15000
-
-static void
-collect_timed_out_foreach (void *element,
-                           void *data)
-{
-  CollectTimedOutData *ctod = data;
-  SnStartupSequence *sequence = element;
-  long tv_sec, tv_usec;
-  double elapsed;
-
-  sn_startup_sequence_get_last_active_time (sequence, &tv_sec, &tv_usec);
-
-  elapsed =
-    ((((double)ctod->now.tv_sec - tv_sec) * G_USEC_PER_SEC +
-      (ctod->now.tv_usec - tv_usec))) / 1000.0;
-
-  meta_topic (META_DEBUG_STARTUP,
-              "Sequence used %g seconds vs. %g max: %s\n",
-              elapsed, (double) STARTUP_TIMEOUT,
-              sn_startup_sequence_get_id (sequence));
-
-  if (elapsed > STARTUP_TIMEOUT)
-    ctod->list = g_slist_prepend (ctod->list, sequence);
-}
-
-static gboolean
-startup_sequence_timeout (void *data)
-{
-  MetaScreen *screen = data;
-  CollectTimedOutData ctod;
-  GSList *l;
-
-  ctod.list = NULL;
-  g_get_current_time (&ctod.now);
-  g_slist_foreach (screen->startup_sequences,
-                   collect_timed_out_foreach,
-                   &ctod);
-
-  for (l = ctod.list; l != NULL; l = l->next)
-    {
-      SnStartupSequence *sequence = l->data;
-
-      meta_topic (META_DEBUG_STARTUP,
-                  "Timed out sequence %s\n",
-                  sn_startup_sequence_get_id (sequence));
-
-      sn_startup_sequence_complete (sequence);
-    }
-
-  g_slist_free (ctod.list);
-
-  if (screen->startup_sequences != NULL)
-    {
-      return TRUE;
-    }
-  else
-    {
-      /* remove */
-      screen->startup_sequence_timeout = 0;
-      return FALSE;
-    }
-}
-
-static void
-meta_screen_sn_event (SnMonitorEvent *event,
-                      void           *user_data)
-{
-  MetaScreen *screen;
-  SnStartupSequence *sequence;
-
-  screen = user_data;
-
-  sequence = sn_monitor_event_get_startup_sequence (event);
-
-  sn_startup_sequence_ref (sequence);
-
-  switch (sn_monitor_event_get_type (event))
-    {
-    case SN_MONITOR_EVENT_INITIATED:
-      {
-        const char *wmclass;
-
-        wmclass = sn_startup_sequence_get_wmclass (sequence);
-
-        meta_topic (META_DEBUG_STARTUP,
-                    "Received startup initiated for %s wmclass %s\n",
-                    sn_startup_sequence_get_id (sequence),
-                    wmclass ? wmclass : "(unset)");
-        add_sequence (screen, sequence);
-      }
-      break;
-
-    case SN_MONITOR_EVENT_COMPLETED:
-      {
-        meta_topic (META_DEBUG_STARTUP,
-                    "Received startup completed for %s\n",
-                    sn_startup_sequence_get_id (sequence));
-        remove_sequence (screen,
-                         sn_monitor_event_get_startup_sequence (event));
-      }
-      break;
-
-    case SN_MONITOR_EVENT_CHANGED:
-      meta_topic (META_DEBUG_STARTUP,
-                  "Received startup changed for %s\n",
-                  sn_startup_sequence_get_id (sequence));
-      break;
-
-    case SN_MONITOR_EVENT_CANCELED:
-      meta_topic (META_DEBUG_STARTUP,
-                  "Received startup canceled for %s\n",
-                  sn_startup_sequence_get_id (sequence));
-      break;
-    }
-
-  g_signal_emit (G_OBJECT (screen), screen_signals[STARTUP_SEQUENCE_CHANGED], 0, sequence);
-
-  sn_startup_sequence_unref (sequence);
-}
-
 /**
 * meta_screen_get_startup_sequences: (skip)
 * @screen:
@@ -2695,7 +2515,6 @@ meta_screen_get_startup_sequences (MetaScreen *screen)
 {
  return screen->startup_sequences;
 }
-#endif

 /* Sets the initial_timestamp and initial_workspace properties
 * of a window according to information given us by the
--- a/src/core/stack.c
+++ b/src/core/stack.c
@@ -288,8 +288,7 @@ windows_on_different_monitor (MetaWindow *a,
  if (a->screen != b->screen)
    return TRUE;

-  return meta_screen_get_monitor_for_window (a->screen, a) !=
-    meta_screen_get_monitor_for_window (b->screen, b);
+  return a->monitor != b->monitor;
 }

 /* Get layer ignoring any transient or group relationships */
@@ -1056,7 +1055,7 @@ stack_sync_to_xserver (MetaStack *stack)
  all_root_children_stacked = g_array_new (FALSE, FALSE, sizeof (guint64));
  x11_hidden_stack_ids = g_array_new (FALSE, FALSE, sizeof (guint64));

-  meta_topic (META_DEBUG_STACK, "Top to bottom: ");
+  meta_topic (META_DEBUG_STACK, "Bottom to top: ");
  meta_push_no_msg_prefix ();

  for (tmp = g_list_last(stack->sorted); tmp != NULL; tmp = tmp->prev)
@@ -1089,11 +1088,7 @@ stack_sync_to_xserver (MetaStack *stack)
      if (w->hidden)
 	{
          if (w->client_type == META_WINDOW_CLIENT_TYPE_X11)
-            {
-              guint64 stack_id = top_level_window;
-
-              g_array_append_val (x11_hidden_stack_ids, stack_id);
-            }
+            g_array_append_val (x11_hidden_stack_ids, top_level_window);
 	  continue;
 	}

@@ -1239,24 +1234,10 @@ get_default_focus_window (MetaStack     *stack,
 {
  /* Find the topmost, focusable, mapped, window.
   * not_this_one is being unfocused or going away, so exclude it.
-   * Also, prefer to focus transient parent of not_this_one,
-   * or top window in same group as not_this_one.
   */

-  MetaWindow *transient_parent;
-  MetaWindow *topmost_in_group;
-  MetaWindow *topmost_overall;
-  MetaGroup *not_this_one_group;
  GList *l;

-  transient_parent = NULL;
-  topmost_in_group = NULL;
-  topmost_overall = NULL;
-  if (not_this_one)
-    not_this_one_group = meta_window_get_group (not_this_one);
-  else
-    not_this_one_group = NULL;
-
  stack_ensure_sorted (stack);

  /* top of this layer is at the front of the list */
@@ -1273,49 +1254,25 @@ get_default_focus_window (MetaStack     *stack,
      if (window->unmaps_pending > 0)
        continue;

-      if (window->minimized)
-        continue;
-
      if (window->unmanaging)
        continue;

      if (!(window->input || window->take_focus))
        continue;

-      if (workspace != NULL && !meta_window_located_on_workspace (window, workspace))
+      if (!meta_window_should_be_showing (window))
        continue;

      if (must_be_at_point && !window_contains_point (window, root_x, root_y))
        continue;

-      if (not_this_one != NULL)
-        {
-          if (transient_parent == NULL &&
-              meta_window_get_transient_for (not_this_one) == window)
-            transient_parent = window;
+      if (window->type == META_WINDOW_DOCK)
+        continue;

-          if (topmost_in_group == NULL &&
-              not_this_one_group != NULL &&
-              not_this_one_group == meta_window_get_group (window))
-            topmost_in_group = window;
-        }
-
-      if (topmost_overall == NULL && window->type != META_WINDOW_DOCK)
-        topmost_overall = window;
-
-      /* We could try to bail out early here for efficiency in
-       * some cases, but it's just not worth the code.
-       */
+      return window;
    }

-  if (transient_parent)
-    return transient_parent;
-  else if (topmost_in_group)
-    return topmost_in_group;
-  else if (topmost_overall)
-    return topmost_overall;
-  else
-    return NULL;
+  return NULL;
 }

 MetaWindow*
--- a/src/core/startup-notification-private.h
+++ b/src/core/startup-notification-private.h
@@ -0,0 +1,48 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2001, 2002 Havoc Pennington
+ * Copyright (C) 2002, 2003 Red Hat Inc.
+ * Some ICCCM manager selection code derived from fvwm2,
+ * Copyright (C) 2001 Dominik Vogt, Matthias Clasen, and fvwm2 team
+ * Copyright (C) 2003 Rob Adams
+ * Copyright (C) 2004-2006 Elijah Newren
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef META_STARTUP_NOTIFICATION_PRIVATE_H
+#define META_STARTUP_NOTIFICATION_PRIVATE_H
+
+#include "display-private.h"
+
+#define META_TYPE_STARTUP_NOTIFICATION (meta_startup_notification_get_type ())
+
+G_DECLARE_FINAL_TYPE (MetaStartupNotification,
+                      meta_startup_notification,
+                      META, STARTUP_NOTIFICATION,
+                      GObject)
+
+MetaStartupNotification *
+         meta_startup_notification_get             (MetaDisplay             *display);
+
+gboolean meta_startup_notification_handle_xevent   (MetaStartupNotification *sn,
+                                                    XEvent                  *xevent);
+
+void     meta_startup_notification_remove_sequence (MetaStartupNotification *sn,
+                                                    const gchar             *id);
+
+GSList * meta_startup_notification_get_sequences   (MetaStartupNotification *sn);
+
+#endif /* META_STARTUP_NOTIFICATION_PRIVATE_H */
--- a/Show More
+++ b/Show More