css: Speed up parsing without variables

Do a cheesy upfront strstr to find out if there's any var( at all.
If not, we don't need to consult the parser to find out if a
property value has references.

.gitlab-ci.yml

@@ -445,9 +445,8 @@ reference:
             --force-fallback-for=gdk-pixbuf,pango
             -Dintrospection=enabled
             -Ddocumentation=true
-            -Dgtk_doc=true
             -Dgdk-pixbuf:gtk_doc=true
-            -Dpango:gtk_doc=true
+            -Dpango:documentation=true
             -Dbuild-demos=false
             -Dbuild-examples=false
             -Dbuild-tests=false

.gitlab-ci/flatpak-build.sh

@@ -19,13 +19,12 @@ flatpak build ${builddir} meson \
                 --buildtype=debugoptimized \
                 -Dx11-backend=true \
                 -Dwayland-backend=true \
-                -Dvulkan=disabled \
                 -Dbuild-tests=false \
                 -Dbuild-testsuite=false \
                 -Dbuild-examples=false \
                 -Dintrospection=disabled \
                 -Dbuild-demos=true \
-                -Ddemo-profile=devel \
+                -Dprofile=devel \
                 _flatpak_build
 
 flatpak build --env=CI_COMMIT_SHORT_SHA=$CI_COMMIT_SHORT_SHA ${builddir} ninja -C _flatpak_build install

.gitlab-ci/test-msys2.sh

@@ -34,7 +34,8 @@ pacman --noconfirm -S --needed \
     mingw-w64-$MSYS2_ARCH-shared-mime-info \
     mingw-w64-$MSYS2_ARCH-python-gobject \
     mingw-w64-$MSYS2_ARCH-shaderc \
-    mingw-w64-$MSYS2_ARCH-vulkan
+    mingw-w64-$MSYS2_ARCH-vulkan \
+    mingw-w64-$MSYS2_ARCH-vulkan-headers
 
 mkdir -p _ccache
 export CCACHE_BASEDIR="$(pwd)"
@@ -44,7 +45,7 @@ export CCACHE_DIR="${CCACHE_BASEDIR}/_ccache"
 ccache --zero-stats
 ccache --show-stats
 export CCACHE_DISABLE=true
-meson \
+meson setup \
     -Dx11-backend=false \
     -Dwayland-backend=false \
     -Dwin32-backend=true \

CONTRIBUTING.md

@@ -35,7 +35,7 @@ The issue tracker is meant to be used for actionable issues only.
 
 You should not open a new issue for security related questions.
 
-When in doubt, follow [security](https://security.gnome.org/).
+When in doubt, follow the process for [GNOME security issues](https://security.gnome.org/).
 
 ### Bug reports
 
@@ -144,33 +144,28 @@ $ git clone https://gitlab.gnome.org/yourusername/gtk.git
 $ cd gtk
 ```
 
-**Note**: if you plan to push changes to back to the main repository and
-have a GNOME account, you can skip the fork, and use the following instead:
-
-```sh
-$ git clone git@gitlab.gnome.org:GNOME/gtk.git
-$ cd gtk
-```
-
 To compile the Git version of GTK on your system, you will need to
 configure your build using Meson:
 
 ```sh
-$ meson _builddir .
-$ cd _builddir
-$ ninja
+$ meson setup _builddir .
+$ meson compile -C _builddir
 ```
 
 Typically, you should work on your own branch:
 
 ```sh
-$ git checkout -b your-branch
+$ git switch -C your-branch
 ```
 
 Once you've finished working on the bug fix or feature, push the branch
 to the Git repository and open a new merge request, to let the GTK
 maintainers review your contribution.
 
+**Important**: Do **not** attach a diff or a patch file to a GitLab issue.
+Patches cannot be reviewed, and do not not go through the CI pipeline. If
+you wish to submit your changes to GTK, always use a merge request.
+
 ### Code reviews
 
 Each contribution is reviewed by the core developers of the GTK project.
@@ -262,4 +257,4 @@ people committing to GTK to follow a few rules:
 
 If you have been contributing to GTK for a while and you don't have commit
 access to the repository, you may ask to obtain it following the [GNOME account
-process](https://wiki.gnome.org/AccountsTeam/NewAccounts).
+process](https://handbook.gnome.org/infrastructure/developer-access.html).

NEWS

@@ -1,6 +1,216 @@
-Overview of Changes in 4.14.2, xx-xx-xxxx
+Overview of Changes in 4.15.1, xx-xx-xxxx
 =========================================
 
+* GtkGraphicsOffload:
+ - Don't crash without a child
+
+* CSS:
+ - Support the :root selector
+ - Support variables and custom properties
+
+* Icontheme:
+ - Make symbolic svg loading more efficient
+ - Handle color-free symbolics more efficiently
+
+* Accessibility:
+ - Make the gtk-demo sidebar search more accessible
+ - Stop emitting focus events
+ - Realize child contexts when necessary
+
+* GDK:
+ - Support XDG_ACTIVATION_TOKEN
+ - dmabuf: Be more defensive when importing unknown formats to GL
+ - dmabuf: Use narrow range for YUV
+ - vulkan: Recreate swapchains when necessary or beneficial
+
+* GSK:
+ - Improve logging for GDK_DEBUG=offload
+ - Improve logging for GSK_DEBUG=renderer
+ - gpu: Warn about inefficient texture import
+ - gpu: Handle tiny offscreens correctly
+ - vulkan: Add profiler marks in various places
+ - vulkan: Fix a problem with imported dmabufs showing up black
+ - cairo: Speed up mask nodes, since we use them for symbolic icons
+
+* Wayland:
+ - Use wl_compositor version 6
+
+* X11:
+ - Implement a missing method
+
+* Build:
+ - Fix many ubsan warnings
+
+* Debugging:
+ - Show more texture details in the recorder
+
+* macOS:
+ - Fix problems with events handed back to the OS
+ - Respect GDK_DEBUG=default-settings
+
+* Translation updates:
+ Korean
+ Portuguese
+ Turkish
+
+
+Overview of Changes in 4.15.0, 21-04-2024
+=========================================
+
+This release changes the default GSK renderer to be Vulkan, on
+Wayland. Other platforms still use ngl.
+
+The intent of this change is to get wider testing and verify that
+Vulkan drivers are good enough for us to rely on. If significant
+problems show up, we will revert this change for 4.16.
+
+You can still override the renderer choice using the GSK_RENDERER
+environment variable.
+
+---
+
+This release also changes font rendering settings by introducing
+a new high-level gtk-font-rendering settings which gives GTK more
+freedom to decide on font rendering.
+
+You can still use the low-level font-related settings by changing
+the new property to 'manual'.
+
+---
+
+* GtkColumnView:
+ - Fix infinite loops in dispose
+ - Fix problems with weak ref cycles in GtkExpression
+
+* GtkListView:
+* GtkShortcutManager:
+ - Track the propagation phase of added controllers
+
+* GtkGLArea:
+ - Produce dmabuf textures, so graphics offload is possible
+
+* GtkTextView:
+ - Support text shadows
+
+* GtkGraphicsOffload:
+ - Add a black-background property
+
+* Settings:
+ - Add a new gtk-font-rendering setting
+
+* Accessibility:
+ - Add support for GetRangeExtents to GtkAccessibleText
+ - Add support for GetOffsetAtPoint to GtkAccessibleText
+ - Implement GtkAccessibleRange for scrollbars
+
+* GDK:
+ - Add a callback-based cursor API
+
+* GSK:
+-  Use the Vulkan renderer by default
+ - Avoid an infinite recursion with offscreens in some cases
+ - Optimize graphics offload to make it more likely that compositors
+   can use direct scanout
+
+* X11:
+ - Fix some confusing debug messages
+ - Drop a no-longer-relevant optimization that was interfering with
+   getting the current window manager capabilities
+
+* macOS:
+ - Implement the color picker for macOS 10.15+
+
+* Debugging:
+ - Snow monitor resolution in the inspector
+
+* Demos:
+ - Use graphics offload in the shadertoy demo
+ - Show more reliable fps numbers in the fishbowl demo
+
+* Tools:
+ - Support generating pdf in gtk4-rendernode-tool
+
+* Build:
+ - Require pango 1.52
+ - Require cairo 1.18
+ - Add a missing dependency that was causing build failures
+ - Drop deprecated build options:
+   gtk_doc -> documentation
+   update_screenshots -> screenshots
+   demo-profile -> profile
+   demos -> build-demos
+
+* Deprecations:
+ - gdk_widget_set/get_font_options
+ - gdk_wayland/x11_display_set_cursor_theme
+
+* Translation updates:
+ Basque
+ Brazilian Portuguese
+ British English
+ Chinese (China)
+ Hebrew
+ Kabyle
+ Persian
+ Polish
+ Russian
+ Slovenian
+ Swedish
+ Turkish
+
+
+Overview of Changes in 4.14.2, 03-04-2024
+=========================================
+
+* GtkScale:
+ - Improve positioning of values in some cases
+
+* Theme:
+ - Make progress in entries visible
+
+* Accessibility:
+ - Fix text insertion handling
+
+* GDK:
+ - dnd: Use the default cursor durion motion
+ - dnd: Use a better cursor for indicating the move action
+
+* GSK:
+ - gl: Handle offloads in offscreen context better
+ - Fix text rendering problems with some fonts
+
+* Wayland:
+ - Tighten up some protocol version checks
+ - Use the presentation time protocol
+ - Fix a crash with subsurfaces
+ - Improve settings portal handling
+
+* macOS:
+ - Fix up the app menu support
+
+* Windows:
+ - Fix problems with minimization
+ - Fix build without fontconfig
+
+* Debugging:
+ - Add font settings in the inspector
+
+* Demos:
+ - Clean up the application demo
+ - Update cursor images for the cursor demo
+
+* Translation updates:
+ Catalan
+ Czech
+ French
+ Georgian
+ Hebrew
+ Persian
+ Slovenian
+ Turkish
+ Ukrainian
+
+
 Overview of Changes in 4.14.1, 16-03-2024
 =========================================
 

README.md

@@ -125,7 +125,7 @@ version, for example `gtk-4-10`.
 How to report bugs
 ------------------
 
-Bugs should be reported on the [issues page](https://gitlab.gnome.org/GNOME/gtk/issues/new).
+Bugs should be reported on the [issues page](https://gitlab.gnome.org/GNOME/gtk/issues/).
 
 In the bug report please include:
 

build-aux/flatpak/org.gtk.Demo4.json

@@ -185,9 +185,8 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
-                "-Ddemo-profile=devel"
+                "-Dprofile=devel"
             ],
             "sources" : [
                 {

build-aux/flatpak/org.gtk.IconBrowser4.json

@@ -114,9 +114,8 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
-                "-Ddemo-profile=devel"
+                "-Dprofile=devel"
             ],
             "sources" : [
                 {

build-aux/flatpak/org.gtk.WidgetFactory4.json

@@ -114,9 +114,8 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
-                "-Ddemo-profile=devel"
+                "-Dprofile=devel"
             ],
             "sources" : [
                 {
@@ -131,7 +130,6 @@
         "env" : {
             "DBUS_SESSION_BUS_ADDRESS" : "''",
             "GSK_RENDERER" : "opengl",
-            "GDK_DEBUG" : "vulkan-disable",
             "G_ENABLE_DEBUG" : "true"
         }
     }

build-aux/flatpak/org.gtk.gtk4.NodeEditor.json

@@ -114,9 +114,8 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
-                "-Ddemo-profile=devel"
+                "-Dprofile=devel"
             ],
             "sources" : [
                 {
@@ -131,7 +130,6 @@
         "env" : {
             "DBUS_SESSION_BUS_ADDRESS" : "''",
             "GSK_RENDERER" : "opengl",
-            "GDK_DEBUG" : "vulkan-disable",
             "G_ENABLE_DEBUG" : "true"
         }
     }

demos/gtk-demo/cursors.c

@@ -15,12 +15,54 @@ on_destroy (gpointer data)
   window = NULL;
 }
 
+static GdkTexture *
+cursor_callback (GdkCursor *cursor,
+                 int        cursor_size,
+                 double     scale,
+                 int       *width,
+                 int       *height,
+                 int       *hotspot_x,
+                 int       *hotspot_y,
+                 gpointer   data)
+{
+  GdkPixbuf *pixbuf;
+  GdkTexture *texture;
+  GError *error = NULL;
+  int scaled_size;
+
+  scaled_size = ceil (cursor_size * scale);
+
+  pixbuf = gdk_pixbuf_new_from_resource_at_scale ("/cursors/images/gtk-logo.svg",
+                                                  scaled_size, scaled_size,
+                                                  TRUE,
+                                                  &error);
+  if (!pixbuf)
+    {
+      g_print ("%s\n", error->message);
+      g_error_free (error);
+      return NULL;
+    }
+
+  texture = gdk_texture_new_for_pixbuf (pixbuf);
+
+  g_object_unref (pixbuf);
+
+  *width = cursor_size;
+  *height = cursor_size;
+  *hotspot_x = 18 * cursor_size / 32.0;
+  *hotspot_y = 2 * cursor_size / 32.0;
+
+  return texture;
+}
+
 GtkWidget *
 do_cursors (GtkWidget *do_widget)
 {
   if (!window)
     {
       GtkBuilder *builder;
+      GtkWidget *logo_callback;
+      GdkCursor *cursor;
 
       builder = gtk_builder_new_from_resource ("/cursors/cursors.ui");
       window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
@@ -29,6 +71,10 @@ do_cursors (GtkWidget *do_widget)
                               gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
                         G_CALLBACK (on_destroy), NULL);
+      logo_callback = GTK_WIDGET (gtk_builder_get_object (builder, "logo_callback"));
+      cursor = gdk_cursor_new_from_callback (cursor_callback, NULL, NULL, NULL);
+      gtk_widget_set_cursor (logo_callback, cursor);
+      g_object_unref (cursor);
       g_object_unref (builder);
     }
 

demos/gtk-demo/demo.gresource.xml

@@ -116,6 +116,7 @@
     <file>w_resize_cursor.png</file>
     <file>zoom_in_cursor.png</file>
     <file>zoom_out_cursor.png</file>
+    <file>gtk-logo.svg</file>
   </gresource>
   <gresource prefix="/dnd">
     <file>dnd.css</file>

demos/gtk-demo/fontify.c

@@ -363,7 +363,9 @@ insert_markup_idle (gpointer data)
 
       if (g_get_monotonic_time () - begin > G_TIME_SPAN_MILLISECOND)
         {
-          g_idle_add (insert_markup_idle, data);
+          guint id;
+          id = g_idle_add (insert_markup_idle, data);
+          g_source_set_name_by_id (id, "[gtk-demo] insert_markup_idle");
           return G_SOURCE_REMOVE;
         }
 
@@ -398,7 +400,9 @@ parse_markup_idle (gpointer data)
   do {
     if (g_get_monotonic_time () - begin > G_TIME_SPAN_MILLISECOND)
       {
-        g_idle_add (parse_markup_idle, data);
+        guint id;
+        id = g_idle_add (parse_markup_idle, data);
+        g_source_set_name_by_id (id, "[gtk-demo] parse_markup_idle");
         return G_SOURCE_REMOVE;
       }
 

demos/gtk-demo/gtk-logo.svg

@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="128"
+   height="128"
+   id="svg6843"
+   sodipodi:version="0.32"
+   inkscape:version="0.92.4 5da689c313, 2019-01-14"
+   version="1.0"
+   sodipodi:docname="gtk-logo.svg"
+   inkscape:output_extension="org.inkscape.output.svg.inkscape"
+   inkscape:export-filename="/home/ebassi/Pictures/gtk-logo-256.png"
+   inkscape:export-xdpi="192"
+   inkscape:export-ydpi="192">
+  <defs
+     id="defs6845">
+    <inkscape:perspective
+       sodipodi:type="inkscape:persp3d"
+       inkscape:vp_x="-50 : 600 : 1"
+       inkscape:vp_y="0 : 1000 : 0"
+       inkscape:vp_z="700 : 600 : 1"
+       inkscape:persp3d-origin="300 : 400 : 1"
+       id="perspective13" />
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="2.8284271"
+     inkscape:cx="69.874353"
+     inkscape:cy="64.313526"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     inkscape:document-units="px"
+     inkscape:grid-bbox="true"
+     width="128px"
+     height="128px"
+     showguides="true"
+     inkscape:guide-bbox="true"
+     inkscape:window-width="1920"
+     inkscape:window-height="1016"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1">
+    <inkscape:grid
+       type="xygrid"
+       id="grid7947" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata6848">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title />
+        <dc:date />
+        <dc:creator>
+          <cc:Agent>
+            <dc:title />
+          </cc:Agent>
+        </dc:creator>
+        <dc:rights>
+          <cc:Agent>
+            <dc:title />
+          </cc:Agent>
+        </dc:rights>
+        <dc:publisher>
+          <cc:Agent>
+            <dc:title />
+          </cc:Agent>
+        </dc:publisher>
+        <dc:identifier />
+        <dc:source />
+        <dc:relation />
+        <dc:language />
+        <dc:subject>
+          <rdf:Bag />
+        </dc:subject>
+        <dc:coverage />
+        <dc:description />
+        <dc:contributor>
+          <cc:Agent>
+            <dc:title />
+          </cc:Agent>
+        </dc:contributor>
+        <cc:license
+           rdf:resource="" />
+      </cc:Work>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     id="layer1"
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer">
+    <path
+       sodipodi:nodetypes="ccccc"
+       id="path6976"
+       d="M 20.88413,30.82696 L 53.816977,55.527708 L 107.33282,39.060543 L 70.587303,17.177763 L 20.88413,30.82696 z"
+       style="fill:#729fcf;fill-opacity:1;fill-rule:evenodd;stroke:#ffffff;stroke-width:2.12364459;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;display:inline" />
+    <path
+       id="path6978"
+       d="M 22.94243,82.287118 L 20.88413,30.82696 L 53.816977,55.527708 L 53.816977,111.10486 L 22.94243,82.287118 z"
+       style="fill:#e40000;fill-opacity:1;fill-rule:evenodd;stroke:#ffffff;stroke-width:2.12364459;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;display:inline" />
+    <path
+       id="path6980"
+       d="M 53.816977,111.10486 L 103.21619,90.5207 L 107.33282,39.060543 L 53.816977,55.527708 L 53.816977,111.10486 z"
+       style="fill:#7fe719;fill-opacity:1;fill-rule:evenodd;stroke:#ffffff;stroke-width:2.12364459;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;display:inline" />
+    <path
+       sodipodi:nodetypes="ccc"
+       id="path6982"
+       d="M 23.216626,81.319479 L 70.48573,67.361442 L 103.38422,90.444516"
+       style="opacity:1;fill:none;fill-rule:evenodd;stroke:#ffffff;stroke-width:1.25;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
+    <path
+       sodipodi:nodetypes="cc"
+       id="path6984"
+       d="M 70.434539,17.875593 L 70.434539,66.984877"
+       style="opacity:1;fill:#babdb6;fill-rule:evenodd;stroke:#ffffff;stroke-width:1.25;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
+  </g>
+</svg>

demos/gtk-demo/gtkfishbowl.c

@@ -456,43 +456,33 @@ gtk_fishbowl_do_update (GtkFishbowl *fishbowl)
 {
   GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
   GdkFrameClock *frame_clock;
-  GdkFrameTimings *start, *end;
-  gint64 start_counter, end_counter;
-  gint64 n_frames, expected_frames;
-  gint64 start_timestamp, end_timestamp;
+  GdkFrameTimings *end;
+  gint64 end_counter;
+  double fps, expected_fps;
   gint64 interval;
 
   frame_clock = gtk_widget_get_frame_clock (GTK_WIDGET (fishbowl));
   if (frame_clock == NULL)
     return;
 
-  start_counter = gdk_frame_clock_get_history_start (frame_clock);
-  end_counter = gdk_frame_clock_get_frame_counter (frame_clock);
-  start = gdk_frame_clock_get_timings (frame_clock, start_counter);
-  for (end = gdk_frame_clock_get_timings (frame_clock, end_counter);
-       end_counter > start_counter && end != NULL && !gdk_frame_timings_get_complete (end);
-       end = gdk_frame_clock_get_timings (frame_clock, end_counter))
-    end_counter--;
-  if (end_counter - start_counter < 4)
+  fps = gdk_frame_clock_get_fps (frame_clock);
+  if (fps <= 0.0)
     return;
 
-  start_timestamp = gdk_frame_timings_get_presentation_time (start);
-  end_timestamp = gdk_frame_timings_get_presentation_time (end);
-  if (start_timestamp == 0 || end_timestamp == 0)
-    {
-      start_timestamp = gdk_frame_timings_get_frame_time (start);
-      end_timestamp = gdk_frame_timings_get_frame_time (end);
-    }
-
-  n_frames = end_counter - start_counter;
-  priv->framerate = ((double) n_frames) * G_USEC_PER_SEC / (end_timestamp - start_timestamp);
-  priv->framerate = ((int)(priv->framerate * 100))/100.0;
-
+  priv->framerate = fps;
   g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_FRAMERATE]);
 
   if (!priv->benchmark)
     return;
 
+  end_counter = gdk_frame_clock_get_frame_counter (frame_clock);
+  for (end = gdk_frame_clock_get_timings (frame_clock, end_counter);
+       end != NULL && !gdk_frame_timings_get_complete (end);
+       end = gdk_frame_clock_get_timings (frame_clock, end_counter))
+    end_counter--;
+  if (end == NULL)
+    return;
+
   interval = gdk_frame_timings_get_refresh_interval (end);
   if (interval == 0)
     {
@@ -500,16 +490,16 @@ gtk_fishbowl_do_update (GtkFishbowl *fishbowl)
       if (interval == 0)
         return;
     }
-  expected_frames = round ((double) (end_timestamp - start_timestamp) / interval);
+  expected_fps = (double) G_USEC_PER_SEC / interval;
 
-  if (n_frames >= expected_frames)
+  if (fps > (expected_fps - 1))
     {
       if (priv->last_benchmark_change > 0)
         priv->last_benchmark_change *= 2;
       else
         priv->last_benchmark_change = 1;
     }
-  else if (n_frames + 1 < expected_frames)
+  else if (0.95 * fps < expected_fps)
     {
       if (priv->last_benchmark_change < 0)
         priv->last_benchmark_change--;

demos/gtk-demo/language-names.c

@@ -40,7 +40,7 @@ get_win32_all_locales_scripts (LPWSTR locale_w, DWORD flags, LPARAM param)
 {
   wchar_t *langname_w = NULL;
   wchar_t locale_abbrev_w[9];
-  gchar *langname, *locale_abbrev, *locale, *p;
+  gchar *langname, *locale_abbrev, *locale;
   gint i;
   const LCTYPE iso639_lctypes[] = { LOCALE_SISO639LANGNAME, LOCALE_SISO639LANGNAME2 };
   GHashTable *ht_scripts_langs = (GHashTable *) param;
@@ -59,7 +59,6 @@ get_win32_all_locales_scripts (LPWSTR locale_w, DWORD flags, LPARAM param)
   GetLocaleInfoEx (locale_w, LOCALE_SLOCALIZEDDISPLAYNAME, langname_w, langname_size);
   langname = g_utf16_to_utf8 (langname_w, -1, NULL, NULL, NULL);
   locale = g_utf16_to_utf8 (locale_w, -1, NULL, NULL, NULL);
-  p = strchr (locale, '-');
   lang = pango_language_from_string (locale);
   if (g_hash_table_lookup (ht_scripts_langs, lang) == NULL)
     g_hash_table_insert (ht_scripts_langs, lang, langname);

demos/gtk-demo/main.c

@@ -20,6 +20,7 @@
 #include "config.h"
 #include <gtk/gtk.h>
 #include <glib/gstdio.h>
+#include <glib/gi18n.h>
 
 #include "demos.h"
 #include "fontify.h"
@@ -923,6 +924,34 @@ clear_search (GtkSearchBar *bar)
     }
 }
 
+static void
+search_results_update (GObject    *filter_model,
+                       GParamSpec *pspec,
+                       GtkEntry   *entry)
+{
+  gsize n_items = g_list_model_get_n_items (G_LIST_MODEL (filter_model));
+
+  if (strlen (gtk_editable_get_text (GTK_EDITABLE (entry))) > 0)
+    {
+      char *text;
+
+      if (n_items > 0)
+        text = g_strdup_printf (ngettext ("%ld search result", "%ld search results", n_items), n_items);
+      else
+        text = g_strdup (_("No search results"));
+
+      gtk_accessible_update_property (GTK_ACCESSIBLE (entry),
+                                      GTK_ACCESSIBLE_PROPERTY_DESCRIPTION, text,
+                                      -1);
+
+      g_free (text);
+    }
+  else
+    {
+      gtk_accessible_reset_property (GTK_ACCESSIBLE (entry), GTK_ACCESSIBLE_PROPERTY_DESCRIPTION);
+    }
+}
+
 static void
 activate (GApplication *app)
 {
@@ -970,6 +999,7 @@ activate (GApplication *app)
 
   search_entry = GTK_WIDGET (gtk_builder_get_object (builder, "search-entry"));
   g_signal_connect (search_entry, "search-changed", G_CALLBACK (demo_search_changed_cb), filter);
+  g_signal_connect (filter_model, "notify::n-items", G_CALLBACK (search_results_update), search_entry);
 
   selection = gtk_single_selection_new (G_LIST_MODEL (filter_model));
   g_signal_connect (selection, "notify::selected-item", G_CALLBACK (selection_cb), NULL);

demos/gtk-demo/shadertoy.c

@@ -120,7 +120,7 @@ create_shadertoy_window (GtkWidget *do_widget)
   gtk_box_append (GTK_BOX (box), aspect);
 
   shadertoy = new_shadertoy ("/shadertoy/alienplanet.glsl");
-  gtk_aspect_frame_set_child (GTK_ASPECT_FRAME (aspect), shadertoy);
+  gtk_aspect_frame_set_child (GTK_ASPECT_FRAME (aspect), gtk_graphics_offload_new (shadertoy));
 
   sw = gtk_scrolled_window_new ();
   gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (sw), 250);

demos/node-editor/node-format.md

@@ -330,6 +330,7 @@ stroke bounds of the path.
 | offset       | `<point>`           | 0 0                 | non-default |
 | hint-style   | `<hint style>`      | slight              | non-default |
 | antialias    | `<antialias>`       | gray                | non-default |
+| hint-metrics | `<hint metrics>`    | off                 | non-default |
 
 Creates a node like `gsk_text_node_new()` with the given properties.
 
@@ -346,6 +347,7 @@ font, an error node will be returned.
 
 Possible values for hint-style are none, slight or full.
 Possible value for antialias are none or gray.
+Possible value for hint-metrics are on or off.
 
 ### texture
 

docs/reference/gdk/cairo.md

@@ -5,8 +5,11 @@ Title: Cairo interaction
 [Cairo](http://cairographics.org) is a graphics library that supports vector
 graphics and image compositing that can be used with GTK.
 
-GDK does not wrap the Cairo API; instead it allows to create Cairo
-drawing contexts which can be used to draw on [class@Gdk.Surface]s.
+GDK does not wrap the Cairo API and it is not possible to use cairo directly
+to draw on a [class@Gdk.Surface]. You can either use a
+[GtkDrawingArea](../gtk4/class.DrawingArea.html) widget or
+[gtk_snapshot_append_cairo](../gtk4/func.Snapshot.append_cairo.html)
+for drawing with cairo in a GTK4 application.
 
 Additional functions allow use [struct@Gdk.Rectangle]s with Cairo
 and to use [struct@Gdk.RGBA], `GdkPixbuf`, and [class@Gdk.Surface]

docs/reference/gtk/css-overview.md

@@ -74,6 +74,7 @@ in a selector, widget names must be prefixed with a # character.
 | E:not(selector) | [CSS Selector Level 3](https://www.w3.org/TR/css3-selectors/#negation) | |
 | E:dir(ltr), E:dir(rtl) | [CSS Selector Level 4](https://drafts.csswg.org/selectors/#the-dir-pseudo) | |
 | E:drop(active) | [CSS Selector Level 4](https://drafts.csswg.org/selectors/#drag-pseudos) | |
+| E:root | [CSS Selector Level 3](https://www.w3.org/TR/selectors-3/#root-pseudo) | |
 | E F | [CSS Selector Level 3](https://www.w3.org/TR/css3-selectors/#descendent-combinators) | |
 | E > F | [CSS Selector Level 3](https://www.w3.org/TR/css3-selectors/#child-combinators) | |
 | E ~ F | [CSS Selector Level 3](https://www.w3.org/TR/css3-selectors/#general-sibling-combinators) | |

docs/reference/gtk/css-properties.md

@@ -56,6 +56,30 @@ follows:
 1 value:
 : all
 
+## Custom Properties
+
+GTK supports custom properties as defined in the
+[CSS Custom Properties for Cascading Variables](https://www.w3.org/TR/css-variables-1)
+spec.
+
+Custom properties are defined as follows:
+
+```css
+--prop: red;
+```
+
+and used via the `var` keyword:
+
+```css
+color: var(--prop);
+```
+
+Custom properties can have a fallback for when the referred property is invalid:
+
+```css
+color: var(--prop, green);
+```
+
 ## Colors
 
 GTK extends the CSS syntax with several additional ways to specify colors.

docs/reference/gtk/gtk4-broadwayd.rst

@@ -8,6 +8,10 @@ gtk4-broadwayd
 The Broadway display server
 ---------------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 |   **gtk4-broadwayd** [OPTIONS...] <DISPLAY>

docs/reference/gtk/gtk4-builder-tool.rst

@@ -8,6 +8,10 @@ gtk4-builder-tool
 GtkBuilder File Utility
 -----------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 |   **gtk4-builder-tool** <COMMAND> [OPTIONS...] <FILE>

docs/reference/gtk/gtk4-demo-application.rst

@@ -8,6 +8,9 @@ gtk4-demo-application
 Demonstrate GtkApplication
 --------------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
 
 SYNOPSIS
 --------

docs/reference/gtk/gtk4-demo.rst

@@ -8,6 +8,10 @@ gtk4-demo
 Demonstrate GTK widgets
 -----------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 

docs/reference/gtk/gtk4-encode-symbolic-svg.rst

@@ -8,6 +8,10 @@ gtk4-encode-symbolic-svg
 Symbolic icon conversion utility
 --------------------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 

docs/reference/gtk/gtk4-icon-browser.rst

@@ -8,6 +8,10 @@ gtk4-icon-browser
 List themed icons
 -----------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 

docs/reference/gtk/gtk4-launch.rst

@@ -8,6 +8,10 @@ gtk4-launch
 Launch an application
 ---------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 

docs/reference/gtk/gtk4-node-editor.rst

@@ -8,6 +8,10 @@ gtk4-node-editor
 Editor render nodes
 -----------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 

docs/reference/gtk/gtk4-path-tool.rst

@@ -8,6 +8,10 @@ gtk4-path-tool
 GskPath Utility
 -----------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 |   **gtk4-path-tool** <COMMAND> [OPTIONS...] <PATH>

docs/reference/gtk/gtk4-query-settings.rst

@@ -8,6 +8,10 @@ gtk4-query-settings
 Print name and value of GTK settings
 ------------------------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 

docs/reference/gtk/gtk4-rendernode-tool.rst

@@ -8,6 +8,10 @@ gtk4-rendernode-tool
 GskRenderNode Utility
 -----------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 |   **gtk4-rendernode-tool** <COMMAND> [OPTIONS...] <FILE>
@@ -45,13 +49,14 @@ without any titlebar.
 Rendering
 ^^^^^^^^^
 
-The ``render`` command saves a rendering of the rendernode as a png or tiff image.
-The name of the file to write can be specified as a second FILE argument.
+The ``render`` command saves a rendering of the rendernode as a png, tiff or svg
+image or as pdf document. The name of the file to write can be specified as a second
+FILE argument.
 
 ``--renderer=RENDERER``
 
   Use the given renderer. Use ``--renderer=help`` to get a information
-  about poassible values for the ``RENDERER``.
+  about possible values for the ``RENDERER``.
 
 Benchmark
 ^^^^^^^^^
@@ -93,4 +98,4 @@ exit code is 1. If the images are identical, it is 0.
 
 ``--quiet``
 
-  Don't write results to stdout.`
+  Don't write results to stdout.

docs/reference/gtk/gtk4-update-icon-cache.rst

@@ -8,6 +8,10 @@ gtk4-update-icon-cache
 Icon theme caching utility
 --------------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 

docs/reference/gtk/gtk4-widget-factory.rst

@@ -8,6 +8,10 @@ gtk4-widget-factory
 Showcase GTK widgets and styles
 -------------------------------
 
+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 

docs/reference/gtk/meson.build

@@ -80,7 +80,7 @@ if get_option('man-pages') and rst2man.found()
     [ 'gtk4-path-tool', '1', ],
   ]
 
-  if get_option('demos')
+  if get_option('build-demos')
     rst_files += [
       [ 'gtk4-demo', '1', ],
       [ 'gtk4-demo-application', '1', ],

docs/reference/gtk/overview.md

@@ -58,12 +58,12 @@ GTK is divided into three parts:
    storage types for efficient use in GUI applications, and much more.
 
 [gnu-lgpl]: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
-[glib]: https://developer.gnome.org/glib/stable/
-[gobject]: https://developer.gnome.org/gobject/stable/
-[gio]: https://developer.gnome.org/gio/stable/
+[glib]: https://docs.gtk.org/glib/
+[gobject]: https://docs.gtk.org/gobject/
+[gio]: https://docs.gtk.org/gio/
 [cairo]: https://www.cairographics.org/manual/
 [opengl]: https://www.opengl.org/about/
 [vulkan]: https://www.vulkan.org/
-[pango]: https://pango.gnome.org/
-[gdkpixbuf]: https://developer.gnome.org/gdk-pixbuf/stable/
+[pango]: https://docs.gtk.org/pango/
+[gdkpixbuf]: https://docs.gtk.org/gdk-pixbuf/
 [graphene]: https://ebassi.github.io/graphene/

docs/reference/gtk/question_index.md

@@ -27,7 +27,7 @@ the question you have, this list is a good place to start.
     Every major version of GTK comes with a [migration guide](#migrating). You may also
     find useful information in the documentation for specific widgets and functions. If
     you have a question not covered in the manual, feel free to ask, and please
-    [file a bug report](https://gitlab.gnome.org/GNOME/gtk/issues/new) against the
+    [file a bug report](https://gitlab.gnome.org/GNOME/gtk/issues/) against the
     documentation.
 
 *  Should I maintain parallel versions of my UI in GTK x and GTK y?
@@ -54,7 +54,7 @@ the question you have, this list is a good place to start.
     For strings returned from functions, they will be declared "const" if they should
     not be freed. Non-const strings should be freed with `g_free()`. Arrays follow the
     same rule. If you find an undocumented exception to the rules, please
-    [file a bug report.](https://gitlab.gnome.org/GNOME/gtk/issues/new).
+    [file a bug report.](https://gitlab.gnome.org/GNOME/gtk/issues/).
 
     The transfer annotations for gobject-introspection that are part of the
     documentation can provide useful hints for memory handling semantics as well.

docs/reference/gtk/resources.md

@@ -4,7 +4,7 @@ Slug: gtk-resources
 ## Opening a bug or feature request
 
 If you encounter a bug, misfeature, or missing feature in GTK, please
-file a bug report on our [GitLab project](https://gitlab.gnome.org/GNOME/gtk/issues/new).
+file a bug report on our [GitLab project](https://gitlab.gnome.org/GNOME/gtk/issues/).
 You should also file issues if the documentation is out of date with the
 existing API, or unclear.
 

docs/reference/gtk/running.md

@@ -217,6 +217,10 @@ A number of options affect behavior instead of logging:
 `no-portals`
 : Disable use of [portals](https://docs.flatpak.org/en/latest/portals.html)
 
+`force-offload`
+: Force graphics offload for all textures, even when slower. This allows
+  to debug offloading in the absence of dmabufs.
+
 `gl-disable`
 : Disable OpenGL support
 

docs/reference/gtk/section-accessibility.md

@@ -155,6 +155,7 @@ Each property name is part of the `GtkAccessibleProperty` enumeration.
 | %GTK_ACCESSIBLE_PROPERTY_VALUE_MIN | “aria-valuemin” | double |
 | %GTK_ACCESSIBLE_PROPERTY_VALUE_NOW | “aria-valuenow” | double |
 | %GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT | “aria-valuetext” | translatable string |
+| %GTK_ACCESSIBLE_PROPERTY_HELP_TEXT | N/A | translatable string |
 
 #### List of accessible relations
 
@@ -216,6 +217,10 @@ are accessible as part of the development process. The GTK Inspector shows
 the accessible attributes of each widget, and also provides an overlay that
 can highlight accessibility issues.
 
+If you support some non-standard keyboard interactions for a widget, you
+**should** set an appropriate `GTK_ACCESSIBLE_PROPERTY_HELP_TEXT` to help
+discoverability of the behavior.
+
 It is possible to set accessible attributes in UI files as well:
 ```xml
 <object class="GtkButton" id="button1">

gdk/broadway/broadway.js

@@ -91,6 +91,31 @@ const GDK_META_MASK     = 1 << 28;
 
 var useDataUrls = window.location.search.includes("datauri");
 
+/* check if we are on Android and using Chrome */
+var isAndroidChrome = false;
+{
+    var ua = navigator.userAgent.toLowerCase();
+    if (ua.indexOf("android") > -1 && ua.indexOf("chrom") > -1) {
+	isAndroidChrome = true;
+    }
+}
+/* check for the passive option for Event listener */
+let passiveSupported = false;
+try {
+    const options = {
+	get passive() { // This function will be called when the browser
+            //   attempts to access the passive property.
+	    passiveSupported = true;
+	    return false;
+	}
+    };
+
+    window.addEventListener("test", null, options);
+    window.removeEventListener("test", null, options);
+} catch(err) {
+    passiveSupported = false;
+}
+
 /* This base64code is based on https://github.com/beatgammit/base64-js/blob/master/index.js which is MIT licensed */
 
 var b64_lookup = [];
@@ -215,11 +240,32 @@ function logStackTrace(len) {
         log(callstack[i]);
 }
 
+/* Helper functions for touch identifier to make it unique on Android */
+var globalTouchIdentifier = Math.round(Date.now() / 1000);
+function touchIdentifierStart(tId)
+{
+    if (isAndroidChrome) {
+	if (tId == 0) {
+	    return ++globalTouchIdentifier;
+	}
+	return globalTouchIdentifier + tId;
+    }
+    return tId;
+}
+function touchIdentifier(tId)
+{
+    if (isAndroidChrome) {
+	return globalTouchIdentifier + tId;
+    }
+    return tId;
+}
+
 var grab = new Object();
 grab.surface = null;
 grab.ownerEvents = false;
 grab.implicit = false;
 var keyDownList = [];
+var inputList = [];
 var lastSerial = 0;
 var lastX = 0;
 var lastY = 0;
@@ -987,7 +1033,14 @@ function handleDisplayCommands(display_commands)
             break;
         case DISPLAY_OP_DELETE_SURFACE:
             var id = cmd[1];
-            delete surfaces[id];
+	    if (id == surfaceWithMouse) {
+		surfaceWithMouse = 0;
+	    }
+	    if (id == realSurfaceWithMouse) {
+		realSurfaceWithMouse = 0;
+		firstTouchDownId = null;
+	    }
+           delete surfaces[id];
             break;
         case DISPLAY_OP_CHANGE_TEXTURE:
             var image = cmd[1];
@@ -1371,8 +1424,14 @@ function getEffectiveEventTarget (id) {
 function updateKeyboardStatus() {
     if (fakeInput != null && showKeyboardChanged) {
         showKeyboardChanged = false;
-        if (showKeyboard)
+        if (showKeyboard) {
+	    if (isAndroidChrome) {
+		fakeInput.blur();
+		fakeInput.value = ' '.repeat(80); // TODO: Should be exchange with broadway server
+		                                  // to bring real value here.
+	    }
             fakeInput.focus();
+	}
         else
             fakeInput.blur();
     }
@@ -2924,6 +2983,19 @@ function pushKeyEvent(fev) {
     keyDownList.push(fev);
 }
 
+function copyInputEvent(ev) {
+    var members = ['inputType', 'data'], i, obj = {};
+    for (i = 0; i < members.length; i++) {
+	if (typeof ev[members[i]] !== "undefined")
+	    obj[members[i]] = ev[members[i]];
+    }
+    return obj;
+}
+
+function pushInputEvent(fev) {
+    inputList.push(fev);
+}
+
 function getKeyEvent(keyCode, pop) {
     var i, fev = null;
     for (i = keyDownList.length-1; i >= 0; i--) {
@@ -3022,6 +3094,29 @@ function handleKeyUp(e) {
         keysym = fev.keysym;
     else {
         //log("Key event (keyCode = " + ev.keyCode + ") not found on keyDownList");
+	if (isAndroidChrome && (ev.keyCode == 229)) {
+	    var i, fev = null, len = inputList.length, str;
+	    for (i = 0; i < len; i++) {
+		fev = inputList[i];
+		switch(fev.inputType) {
+		case "deleteContentBackward":
+		    sendInput(BROADWAY_EVENT_KEY_PRESS, [65288, lastState]);
+		    sendInput(BROADWAY_EVENT_KEY_RELEASE, [65288, lastState]);
+		    break;
+		case "insertText":
+		    if (fev.data !== undefined) {
+			for (let sym of fev.data) {
+			    sendInput(BROADWAY_EVENT_KEY_PRESS, [sym.codePointAt(0), lastState]);
+			    sendInput(BROADWAY_EVENT_KEY_RELEASE, [sym.codePointAt(0), lastState]);
+			}
+		    }
+		    break;
+		default:
+		    break;
+		}
+	    }
+	    inputList.splice(0, len);
+	}
         keysym = 0;
     }
 
@@ -3030,6 +3125,16 @@ function handleKeyUp(e) {
     return cancelEvent(ev);
 }
 
+function handleInput (e)  {
+    var fev = null, ev = (e ? e : window.event), keysym = null, suppress = false;
+
+    fev = copyInputEvent(ev);
+    pushInputEvent(fev);
+
+    // Stop keypress events just in case
+    return cancelEvent(ev);
+}
+
 function onKeyDown (ev) {
     updateForEvent(ev);
     return handleKeyDown(ev);
@@ -3045,6 +3150,11 @@ function onKeyUp (ev) {
     return handleKeyUp(ev);
 }
 
+function onInput (ev) {
+    updateForEvent(ev);
+    return handleInput(ev);
+}
+
 function cancelEvent(ev)
 {
     ev = ev ? ev : window.event;
@@ -3076,13 +3186,14 @@ function onMouseWheel(ev)
 }
 
 function onTouchStart(ev) {
-    event.preventDefault();
+    ev.preventDefault();
 
     updateKeyboardStatus();
     updateForEvent(ev);
 
     for (var i = 0; i < ev.changedTouches.length; i++) {
         var touch = ev.changedTouches.item(i);
+	var touchId = touchIdentifierStart(touch.identifier);
 
         var origId = getSurfaceId(touch);
         var id = getEffectiveEventTarget (origId);
@@ -3090,7 +3201,7 @@ function onTouchStart(ev) {
         var isEmulated = 0;
 
         if (firstTouchDownId == null) {
-            firstTouchDownId = touch.identifier;
+            firstTouchDownId = touchId;
             isEmulated = 1;
 
             if (realSurfaceWithMouse != origId || id != surfaceWithMouse) {
@@ -3105,52 +3216,54 @@ function onTouchStart(ev) {
             }
         }
 
-        sendInput (BROADWAY_EVENT_TOUCH, [0, id, touch.identifier, isEmulated, pos.rootX, pos.rootY, pos.winX, pos.winY, lastState]);
+        sendInput (BROADWAY_EVENT_TOUCH, [0, id, touchId, isEmulated, pos.rootX, pos.rootY, pos.winX, pos.winY, lastState]);
     }
 }
 
 function onTouchMove(ev) {
-    event.preventDefault();
+    ev.preventDefault();
 
     updateKeyboardStatus();
     updateForEvent(ev);
 
     for (var i = 0; i < ev.changedTouches.length; i++) {
         var touch = ev.changedTouches.item(i);
+	var touchId = touchIdentifier(touch.identifier);
 
         var origId = getSurfaceId(touch);
         var id = getEffectiveEventTarget (origId);
         var pos = getPositionsFromEvent(touch, id);
 
         var isEmulated = 0;
-        if (firstTouchDownId == touch.identifier) {
+        if (firstTouchDownId == touchId) {
             isEmulated = 1;
         }
 
-        sendInput (BROADWAY_EVENT_TOUCH, [1, id, touch.identifier, isEmulated, pos.rootX, pos.rootY, pos.winX, pos.winY, lastState]);
+        sendInput (BROADWAY_EVENT_TOUCH, [1, id, touchId, isEmulated, pos.rootX, pos.rootY, pos.winX, pos.winY, lastState]);
     }
 }
 
 function onTouchEnd(ev) {
-    event.preventDefault();
+    ev.preventDefault();
 
     updateKeyboardStatus();
     updateForEvent(ev);
 
     for (var i = 0; i < ev.changedTouches.length; i++) {
         var touch = ev.changedTouches.item(i);
+	var touchId = touchIdentifier(touch.identifier);
 
         var origId = getSurfaceId(touch);
         var id = getEffectiveEventTarget (origId);
         var pos = getPositionsFromEvent(touch, id);
 
         var isEmulated = 0;
-        if (firstTouchDownId == touch.identifier) {
+        if (firstTouchDownId == touchId) {
             isEmulated = 1;
             firstTouchDownId = null;
         }
 
-        sendInput (BROADWAY_EVENT_TOUCH, [2, id, touch.identifier, isEmulated, pos.rootX, pos.rootY, pos.winX, pos.winY, lastState]);
+        sendInput (BROADWAY_EVENT_TOUCH, [2, id, touchId, isEmulated, pos.rootX, pos.rootY, pos.winX, pos.winY, lastState]);
     }
 }
 
@@ -3167,11 +3280,11 @@ function setupDocument(document)
     document.onkeyup = onKeyUp;
 
     if (document.addEventListener) {
-      document.addEventListener('DOMMouseScroll', onMouseWheel, false);
-      document.addEventListener('mousewheel', onMouseWheel, false);
-      document.addEventListener('touchstart', onTouchStart, false);
-      document.addEventListener('touchmove', onTouchMove, false);
-      document.addEventListener('touchend', onTouchEnd, false);
+	document.addEventListener('DOMMouseScroll', onMouseWheel, passiveSupported ? { passive: false, capture: false } : false);
+	document.addEventListener('mousewheel', onMouseWheel, passiveSupported ? { passive: false, capture: false } : false);
+	document.addEventListener('touchstart', onTouchStart, passiveSupported ? { passive: false, capture: false } : false);
+	document.addEventListener('touchmove', onTouchMove, passiveSupported ? { passive: false, capture: false } : false);
+	document.addEventListener('touchend', onTouchEnd, passiveSupported ? { passive: false, capture: false } : false);
     } else if (document.attachEvent) {
       element.attachEvent("onmousewheel", onMouseWheel);
     }
@@ -3237,12 +3350,14 @@ function connect()
     };
 
     var iOS = /(iPad|iPhone|iPod)/g.test( navigator.userAgent );
-    if (iOS) {
+    if (iOS || isAndroidChrome) {
         fakeInput = document.createElement("input");
         fakeInput.type = "text";
         fakeInput.style.position = "absolute";
         fakeInput.style.left = "-1000px";
         fakeInput.style.top = "-1000px";
         document.body.appendChild(fakeInput);
+	if (isAndroidChrome)
+	    fakeInput.addEventListener('input', onInput, passiveSupported ? { passive: false, capture: false } : false);
     }
 }

gdk/broadway/meson.build

@@ -52,8 +52,7 @@ broadwayjs_h = custom_target('broadwayjs.h',
 )
 
 libgdk_broadway = static_library('gdk-broadway',
-  clienthtml_h, broadwayjs_h,
-  gdk_broadway_sources, gdkconfig, gdkenum_h,
+  sources: [ clienthtml_h, broadwayjs_h, gdk_broadway_sources, gdk_gen_headers ],
   include_directories: [confinc, gdkinc],
   c_args: [
     '-DGTK_COMPILATION',

gdk/gdk.c

@@ -122,6 +122,7 @@ static const GdkDebugKey gdk_debug_keys[] = {
 
   { "portals",         GDK_DEBUG_PORTALS, "Force use of portals" },
   { "no-portals",      GDK_DEBUG_NO_PORTALS, "Disable use of portals" },
+  { "force-offload",   GDK_DEBUG_FORCE_OFFLOAD, "Force graphics offload for all textures" },
   { "gl-disable",      GDK_DEBUG_GL_DISABLE, "Disable OpenGL support" },
   { "gl-no-fractional", GDK_DEBUG_GL_NO_FRACTIONAL, "Disable fractional scaling for OpenGL" },
   { "gl-debug",        GDK_DEBUG_GL_DEBUG, "Insert debugging information in OpenGL" },
@@ -142,31 +143,50 @@ static const GdkDebugKey gdk_debug_keys[] = {
 
 #ifdef G_HAS_CONSTRUCTORS
 #ifdef G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA
-#pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(stash_desktop_startup_notification_id)
+#pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(stash_and_unset_environment)
 #endif
-G_DEFINE_CONSTRUCTOR(stash_desktop_startup_notification_id)
+G_DEFINE_CONSTRUCTOR(stash_and_unset_environment)
 #endif
 
 static char *startup_notification_id = NULL;
+static char *xdg_activation_token = NULL;
 
 static void
-stash_desktop_startup_notification_id (void)
+stash_and_unset_environment (void)
 {
-  const char *desktop_startup_id;
-
-  desktop_startup_id = g_getenv ("DESKTOP_STARTUP_ID");
-  if (desktop_startup_id && *desktop_startup_id != '\0')
-    {
-      if (!g_utf8_validate (desktop_startup_id, -1, NULL))
-        g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8");
-      else
-        startup_notification_id = g_strdup (desktop_startup_id);
-    }
-
-  /* Clear the environment variable so it won't be inherited by
+  /* Copies environment variables and unsets them so they won't be inherited by
    * child processes and confuse things.
+   *
+   * Changing environment variables can be racy so we try to do this as early as
+   * possible in the program flow and before any printing that might involve
+   * environment variables.
    */
-  g_unsetenv ("DESKTOP_STARTUP_ID");
+  struct {
+    const char *key;
+    char **dst;
+  } vars[] = {
+    { "DESKTOP_STARTUP_ID", &startup_notification_id },
+    { "XDG_ACTIVATION_TOKEN", &xdg_activation_token },
+  };
+  size_t i;
+
+  for (i = 0; i < G_N_ELEMENTS (vars); i++)
+    *vars[i].dst = g_strdup (g_getenv (vars[i].key));
+
+  for (i = 0; i < G_N_ELEMENTS (vars); i++)
+    g_unsetenv (vars[i].key);
+
+  for (i = 0; i < G_N_ELEMENTS (vars); i++)
+    {
+      if (*vars[i].dst == NULL)
+        continue;
+
+      if (!g_utf8_validate (*vars[i].dst, -1, NULL))
+        {
+          g_warning ("%s contains invalid UTF-8", vars[i].key);
+          g_clear_pointer (vars[i].dst, g_free);
+        }
+    }
 }
 
 static gpointer
@@ -291,7 +311,7 @@ gdk_pre_parse (void)
     gdk_gl_backend_use (GDK_GL_WGL);
 
 #ifndef G_HAS_CONSTRUCTORS
-  stash_desktop_startup_notification_id ();
+  stash_and_unset_environment ();
 #endif
 }
 
@@ -325,15 +345,20 @@ gdk_display_open_default (void)
 /*< private >
  * gdk_get_startup_notification_id:
  *
- * Returns the original value of the DESKTOP_STARTUP_ID environment
- * variable if it was defined and valid, or %NULL otherwise.
+ * Returns the original value of the XDG_ACTIVATION_TOKEN environment
+ * variable if it was defined and valid, otherwise it returns the original
+ * value of the DESKTOP_STARTUP_ID environment variable if it was defined
+ * and valid, or %NULL if neither of them were defined and valid.
  *
  * Returns: (nullable) (transfer none): the original value of the
- *   DESKTOP_STARTUP_ID environment variable
+ *   XDG_ACTIVATION_TOKEN or DESKTOP_STARTUP_ID environment variable
  */
 const char *
 gdk_get_startup_notification_id (void)
 {
+  if (xdg_activation_token)
+    return xdg_activation_token;
+
   return startup_notification_id;
 }
 

gdk/gdkarrayimpl.c

@@ -41,8 +41,10 @@ G_BEGIN_DECLS
 
 #ifdef GDK_ARRAY_NULL_TERMINATED
 #define GDK_ARRAY_REAL_SIZE(_size) ((_size) + 1)
+#define GDK_ARRAY_MAX_SIZE (G_MAXSIZE / sizeof (_T_) - 1)
 #else
 #define GDK_ARRAY_REAL_SIZE(_size) (_size)
+#define GDK_ARRAY_MAX_SIZE (G_MAXSIZE / sizeof (_T_))
 #endif
 
 /* make this readable */
@@ -177,18 +179,23 @@ G_GNUC_UNUSED static inline void
 gdk_array(reserve) (GdkArray *self,
                     gsize      n)
 {
-  gsize new_size, size;
+  gsize new_capacity, size, capacity;
 
-  if (n <= gdk_array(get_capacity) (self))
-    return;
+  if (G_UNLIKELY (n > GDK_ARRAY_MAX_SIZE))
+    g_error ("requesting array size of %zu, but maximum size is %zu", n, GDK_ARRAY_MAX_SIZE);
+
+  capacity = gdk_array(get_capacity) (self);
+  if (n <= capacity)
+     return;
 
   size = gdk_array(get_size) (self);
-  new_size = ((gsize) 1) << g_bit_storage (MAX (GDK_ARRAY_REAL_SIZE (n), 16) - 1);
+  /* capacity * 2 can overflow, that's why we MAX() */
+  new_capacity = MAX (GDK_ARRAY_REAL_SIZE (n), capacity * 2);
 
 #ifdef GDK_ARRAY_PREALLOC
   if (self->start == self->preallocated)
     {
-      self->start = g_new (_T_, new_size);
+      self->start = g_new (_T_, new_capacity);
       memcpy (self->start, self->preallocated, sizeof (_T_) * GDK_ARRAY_REAL_SIZE (size));
     }
   else
@@ -196,15 +203,15 @@ gdk_array(reserve) (GdkArray *self,
 #ifdef GDK_ARRAY_NULL_TERMINATED
   if (self->start == NULL)
     {
-      self->start = g_new (_T_, new_size);
+      self->start = g_new (_T_, new_capacity);
       *self->start = *(_T_[1]) { 0 };
     }
   else
 #endif
-    self->start = g_renew (_T_, self->start, new_size);
+    self->start = g_renew (_T_, self->start, new_capacity);
 
   self->end = self->start + size;
-  self->end_allocation = self->start + new_size;
+  self->end_allocation = self->start + new_capacity;
 #ifdef GDK_ARRAY_NULL_TERMINATED
   self->end_allocation--;
 #endif
@@ -312,6 +319,7 @@ gdk_array(get) (const GdkArray *self,
 #undef gdk_array_paste
 #undef gdk_array
 #undef GDK_ARRAY_REAL_SIZE
+#undef GDK_ARRAY_MAX_SIZE
 
 #undef GDK_ARRAY_BY_VALUE
 #undef GDK_ARRAY_ELEMENT_TYPE

gdk/gdkcursor.c

@@ -156,6 +156,9 @@ gdk_cursor_finalize (GObject *object)
   g_clear_object (&cursor->texture);
   g_clear_object (&cursor->fallback);
 
+  if (cursor->destroy)
+    cursor->destroy (cursor->data);
+
   G_OBJECT_CLASS (gdk_cursor_parent_class)->finalize (object);
 }
 
@@ -253,6 +256,11 @@ gdk_cursor_hash (gconstpointer pointer)
     hash ^= g_str_hash (cursor->name);
   else if (cursor->texture)
     hash ^= g_direct_hash (cursor->texture);
+  else if (cursor->callback)
+    {
+      hash ^= g_direct_hash (cursor->callback);
+      hash ^= g_direct_hash (cursor->data);
+    }
 
   hash ^= (cursor->hotspot_x << 8) | cursor->hotspot_y;
 
@@ -281,6 +289,10 @@ gdk_cursor_equal (gconstpointer a,
       ca->hotspot_y != cb->hotspot_y)
     return FALSE;
 
+  if (ca->callback != cb->callback ||
+      ca->data != cb->data)
+    return FALSE;
+
   return TRUE;
 }
 
@@ -355,6 +367,45 @@ gdk_cursor_new_from_texture (GdkTexture *texture,
                        NULL);
 }
 
+/**
+ * gdk_cursor_new_from_callback:
+ * @callback: the `GdkCursorGetTextureCallback`
+ * @data: data to pass to @callback
+ * @destroy: destroy notify for @data
+ * @fallback: (nullable): the `GdkCursor` to fall back to when
+ *   this one cannot be supported
+ *
+ * Creates a new callback-based cursor object.
+ *
+ * Cursors of this kind produce textures for the cursor
+ * image on demand, when the @callback is called.
+ *
+ * Returns: (nullable): a new `GdkCursor`
+ *
+ * Since: 4.16
+ */
+GdkCursor *
+gdk_cursor_new_from_callback (GdkCursorGetTextureCallback  callback,
+                              gpointer                     data,
+                              GDestroyNotify               destroy,
+                              GdkCursor                   *fallback)
+{
+  GdkCursor *cursor;
+
+  g_return_val_if_fail (callback != NULL, NULL);
+  g_return_val_if_fail (fallback == NULL || GDK_IS_CURSOR (fallback), NULL);
+
+  cursor = g_object_new (GDK_TYPE_CURSOR,
+                         "fallback", fallback,
+                         NULL);
+
+  cursor->callback = callback;
+  cursor->data = data;
+  cursor->destroy = destroy;
+
+  return cursor;
+}
+
 /**
  * gdk_cursor_get_fallback: (attributes org.gtk.Method.get_property=fallback)
  * @cursor: a `GdkCursor`
@@ -459,3 +510,22 @@ gdk_cursor_get_hotspot_y (GdkCursor *cursor)
 
   return cursor->hotspot_y;
 }
+
+GdkTexture *
+gdk_cursor_get_texture_for_size (GdkCursor *cursor,
+                                 int        cursor_size,
+                                 double     scale,
+                                 int       *width,
+                                 int       *height,
+                                 int       *hotspot_x,
+                                 int       *hotspot_y)
+{
+  if (cursor->callback == NULL)
+    return NULL;
+
+  return cursor->callback (cursor,
+                           cursor_size, scale,
+                           width, height,
+                           hotspot_x, hotspot_y,
+                           cursor->data);
+}

gdk/gdkcursor.h

@@ -51,6 +51,52 @@ GDK_AVAILABLE_IN_ALL
 GdkCursor*  gdk_cursor_new_from_name     (const char      *name,
                                           GdkCursor       *fallback);
 
+/**
+ * GdkCursorGetTestureCallback:
+ * @cursor: the `GdkCursor`
+ * @cursor_size: the nominal cursor size, in application pixels
+ * @scale: the device scale
+ * @width: (out): return location for the actual cursor width,
+ *   in application pixels
+ * @height: (out): return location for the actual cursor height,
+ *   in application pixels
+ * @hotspot_x: (out): return location for the hotspot X position,
+ *   in application pixels
+ * @hotspot_y: (out): return location for the hotspot Y position,
+ *   in application pixels
+ * @data: User data for the callback
+ *
+ * The type of callback used by a dynamic `GdkCursor` to generate
+ * a texture for the cursor image at the given @cursor_size
+ * and @scale.
+ *
+ * The actual cursor size in application pixels may be different
+ * from @cursor_size x @cursor_size, and will be returned in
+ * @width, @height. The returned texture should have a size that
+ * corresponds to the actual cursor size, in device pixels (i.e.
+ * application pixels, multiplied by @scale).
+ *
+ * This function may fail and return `NULL`, in which case
+ * the fallback cursor will be used.
+ *
+ * Returns: (nullable) (transfer full): the cursor image, or
+ *   `NULL` if none could be produced.
+ */
+typedef GdkTexture * (* GdkCursorGetTextureCallback) (GdkCursor   *cursor,
+                                                      int          cursor_size,
+                                                      double       scale,
+                                                      int         *width,
+                                                      int         *height,
+                                                      int         *hotspot_x,
+                                                      int         *hotspot_y,
+                                                      gpointer     data);
+
+GDK_AVAILABLE_IN_4_16
+GdkCursor * gdk_cursor_new_from_callback (GdkCursorGetTextureCallback  callback,
+                                          gpointer                     data,
+                                          GDestroyNotify               destroy,
+                                          GdkCursor                   *fallback);
+
 GDK_AVAILABLE_IN_ALL
 GdkCursor * gdk_cursor_get_fallback      (GdkCursor       *cursor);
 GDK_AVAILABLE_IN_ALL

gdk/gdkcursorprivate.h

@@ -44,6 +44,10 @@ struct _GdkCursor
   GdkTexture *texture;
   int hotspot_x;
   int hotspot_y;
+
+  GdkCursorGetTextureCallback callback;
+  gpointer data;
+  GDestroyNotify destroy;
 };
 
 struct _GdkCursorClass
@@ -55,5 +59,13 @@ guint                   gdk_cursor_hash                         (gconstpointer
 gboolean                gdk_cursor_equal                        (gconstpointer          a,
                                                                  gconstpointer          b);
 
+GdkTexture *            gdk_cursor_get_texture_for_size         (GdkCursor *cursor,
+                                                                 int        cursor_size,
+                                                                 double     scale,
+                                                                 int       *width,
+                                                                 int       *height,
+                                                                 int       *hotspot_x,
+                                                                 int       *hotspot_y);
+
 G_END_DECLS
 

gdk/gdkdebugprivate.h

@@ -44,7 +44,7 @@ typedef enum {
   GDK_DEBUG_NO_PORTALS      = 1 << 15,
   GDK_DEBUG_GL_DISABLE      = 1 << 16,
   GDK_DEBUG_GL_NO_FRACTIONAL= 1 << 17,
-
+  GDK_DEBUG_FORCE_OFFLOAD   = 1 << 18,
   GDK_DEBUG_GL_DISABLE_GL   = 1 << 19,
   GDK_DEBUG_GL_DISABLE_GLES = 1 << 20,
   GDK_DEBUG_GL_PREFER_GL    = 1 << 21,

gdk/gdkdisplay.c

@@ -1559,13 +1559,14 @@ describe_egl_config (EGLDisplay egl_display,
 
   if (!eglGetConfigAttrib (egl_display, egl_config, EGL_DEPTH_SIZE, &depth))
     depth = 0;
+
   if (!eglGetConfigAttrib (egl_display, egl_config, EGL_STENCIL_SIZE, &stencil))
     stencil = 0;
 
-  return g_strdup_printf ("R%dG%dB%dA%d%s%s%s", red, green, blue, alpha,
+  return g_strdup_printf ("R%dG%dB%dA%d%s, depth %d, stencil %d", red, green, blue, alpha,
                           type == EGL_COLOR_COMPONENT_TYPE_FIXED_EXT ? "" : " float",
-                          depth > 0 ? ", depth buffer" : "",
-                          stencil > 0 ? ", stencil buffer" : "");
+                          depth,
+                          stencil);
 }
 
 gpointer

gdk/gdkdmabuf.c

@@ -144,8 +144,8 @@ struct _YUVCoefficients
 };
 
 /* multiplied by 65536 */
-//static const YUVCoefficients itu601_narrow = { 104597, -25675, -53279, 132201 };
-static const YUVCoefficients itu601_wide = { 74711, -25864, -38050, 133176 };
+static const YUVCoefficients itu601_narrow = { 104597, -25675, -53279, 132201 };
+//static const YUVCoefficients itu601_wide = { 74711, -25864, -38050, 133176 };
 
 static inline void
 get_uv_values (const YUVCoefficients *coeffs,
@@ -229,7 +229,7 @@ download_nv12 (guchar          *dst_data,
           int r, g, b;
           gsize xs, ys;
 
-          get_uv_values (&itu601_wide, uv_data[x / X_SUB * 2 + U], uv_data[x / X_SUB * 2 + V], &r, &g, &b);
+          get_uv_values (&itu601_narrow, uv_data[x / X_SUB * 2 + U], uv_data[x / X_SUB * 2 + V], &r, &g, &b);
 
           for (ys = 0; ys < Y_SUB && y + ys < height; ys++)
             for (xs = 0; xs < X_SUB && x + xs < width; xs++)
@@ -309,7 +309,7 @@ download_yuv_3 (guchar          *dst_data,
           int r, g, b;
           gsize xs, ys;
 
-          get_uv_values (&itu601_wide, u_data[x / X_SUB], v_data[x / X_SUB], &r, &g, &b);
+          get_uv_values (&itu601_narrow, u_data[x / X_SUB], v_data[x / X_SUB], &r, &g, &b);
 
           for (ys = 0; ys < Y_SUB && y + ys < height; ys++)
             for (xs = 0; xs < X_SUB && x + xs < width; xs++)
@@ -365,7 +365,7 @@ download_yuyv (guchar          *dst_data,
         {
           int r, g, b;
 
-          get_uv_values (&itu601_wide, src_data[2 * x + U], src_data[2 * x + V], &r, &g, &b);
+          get_uv_values (&itu601_narrow, src_data[2 * x + U], src_data[2 * x + V], &r, &g, &b);
           set_rgb_values (&dst_data[3 * x], src_data[2 * x + Y1], r, g, b);
           if (x + 1 < width)
             set_rgb_values (&dst_data[3 * (x + 1)], src_data[2 * x + Y2], r, g, b);

gdk/gdkdmabufegl.c

@@ -163,6 +163,8 @@ gdk_dmabuf_get_egl_downloader (GdkDisplay              *display,
     return NULL;
 
   previous = gdk_gl_context_get_current ();
+  if (previous)
+    g_object_ref (previous);
   formats = gdk_dmabuf_formats_builder_new ();
   external = gdk_dmabuf_formats_builder_new ();
 
@@ -194,7 +196,10 @@ gdk_dmabuf_get_egl_downloader (GdkDisplay              *display,
     }
 
   if (previous)
-    gdk_gl_context_make_current (previous);
+    {
+      gdk_gl_context_make_current (previous);
+      g_object_unref (previous);
+    }
 
   return GDK_DMABUF_DOWNLOADER (renderer);
 }
@@ -239,7 +244,7 @@ gdk_dmabuf_egl_create_image (GdkDisplay      *display,
   attribs[i++] = EGL_YUV_COLOR_SPACE_HINT_EXT;
   attribs[i++] = EGL_ITU_REC601_EXT;
   attribs[i++] = EGL_SAMPLE_RANGE_HINT_EXT;
-  attribs[i++] = EGL_YUV_FULL_RANGE_EXT;
+  attribs[i++] = EGL_YUV_NARROW_RANGE_EXT;
 
 #define ADD_PLANE(plane) \
   { \
@@ -265,6 +270,7 @@ gdk_dmabuf_egl_create_image (GdkDisplay      *display,
   if (dmabuf->n_planes > 3) ADD_PLANE (3);
 
   attribs[i++] = EGL_NONE;
+  g_assert (i < G_N_ELEMENTS (attribs));
 
   image = eglCreateImageKHR (egl_display,
                              EGL_NO_CONTEXT,

gdk/gdkdmabuftexture.c

@@ -25,6 +25,7 @@
 #include "gdkdmabufformatsbuilderprivate.h"
 #include "gdkdmabuffourccprivate.h"
 #include "gdkdmabufprivate.h"
+#include "gdkdmabuftexturebuilderprivate.h"
 #include "gdktextureprivate.h"
 #include <gdk/gdkglcontext.h>
 #include <gdk/gdkgltexturebuilder.h>
@@ -71,7 +72,10 @@ gdk_dmabuf_texture_dispose (GObject *object)
   GdkDmabufTexture *self = GDK_DMABUF_TEXTURE (object);
 
   if (self->destroy)
-    self->destroy (self->data);
+    {
+      self->destroy (self->data);
+      self->destroy = NULL;
+    }
 
   g_clear_object (&self->downloader);
   g_clear_object (&self->display);

gdk/gdkdmabuftexturebuilder.c

@@ -25,6 +25,7 @@
 #include "gdkdisplay.h"
 #include "gdkenumtypes.h"
 #include "gdkdmabuftextureprivate.h"
+#include "gdkdmabuftexturebuilderprivate.h"
 
 #include <cairo-gobject.h>
 
@@ -948,22 +949,20 @@ gdk_dmabuf_texture_builder_set_update_region (GdkDmabufTextureBuilder *self,
  *
  * Builds a new `GdkTexture` with the values set up in the builder.
  *
- * It is a programming error to call this function if any mandatory
- * property has not been set.
+ * It is a programming error to call this function if any mandatory property has not been set.
  *
- * If the dmabuf is not supported by GTK, %NULL will be returned and @error will be set.
+ * Not all formats defined in the `drm_fourcc.h` header are supported. You can use
+ * [method@Gdk.Display.get_dmabuf_formats] to get a list of supported formats. If the
+ * format is not supported by GTK, %NULL will be returned and @error will be set.
  *
  * The `destroy` function gets called when the returned texture gets released.
  *
- * It is possible to call this function multiple times to create multiple textures,
- * possibly with changing properties in between.
- *
  * It is the responsibility of the caller to keep the file descriptors for the planes
  * open until the created texture is no longer used, and close them afterwards (possibly
  * using the @destroy notify).
  *
- * Not all formats defined in the `drm_fourcc.h` header are supported. You can use
- * [method@Gdk.Display.get_dmabuf_formats] to get a list of supported formats.
+ * It is possible to call this function multiple times to create multiple textures,
+ * possibly with changing properties in between.
  *
  * Returns: (transfer full) (nullable): a newly built `GdkTexture` or `NULL`
  *   if the format is not supported
@@ -1004,3 +1003,19 @@ gdk_dmabuf_texture_builder_get_dmabuf (GdkDmabufTextureBuilder *self)
 {
   return &self->dmabuf;
 }
+
+void
+gdk_dmabuf_texture_builder_set_dmabuf (GdkDmabufTextureBuilder *self,
+                                       const GdkDmabuf         *dmabuf)
+{
+  gdk_dmabuf_texture_builder_set_fourcc (self, dmabuf->fourcc);
+  gdk_dmabuf_texture_builder_set_modifier (self, dmabuf->modifier);
+  gdk_dmabuf_texture_builder_set_n_planes (self, dmabuf->n_planes);
+
+  for (unsigned int i = 0; i < dmabuf->n_planes; i++)
+    {
+      gdk_dmabuf_texture_builder_set_fd (self, i, dmabuf->planes[i].fd);
+      gdk_dmabuf_texture_builder_set_stride (self, i, dmabuf->planes[i].stride);
+      gdk_dmabuf_texture_builder_set_offset (self, i, dmabuf->planes[i].offset);
+    }
+}

gdk/gdkdmabuftexturebuilderprivate.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "gdkdmabuftexturebuilder.h"
+#include "gdkdmabufprivate.h"
+
+G_BEGIN_DECLS
+
+const GdkDmabuf *       gdk_dmabuf_texture_builder_get_dmabuf   (GdkDmabufTextureBuilder *builder);
+
+void                    gdk_dmabuf_texture_builder_set_dmabuf   (GdkDmabufTextureBuilder *builder,
+                                                                 const GdkDmabuf         *dmabuf);
+
+G_END_DECLS
+

gdk/gdkdmabuftextureprivate.h

@@ -7,8 +7,6 @@
 
 G_BEGIN_DECLS
 
-const GdkDmabuf *       gdk_dmabuf_texture_builder_get_dmabuf   (GdkDmabufTextureBuilder *builder);
-
 GdkTexture *            gdk_dmabuf_texture_new_from_builder (GdkDmabufTextureBuilder *builder,
                                                              GDestroyNotify           destroy,
                                                              gpointer                 data,

gdk/gdkdrag.c

@@ -779,11 +779,13 @@ static struct {
   const char   *name;
   GdkCursor    *cursor;
 } drag_cursors[] = {
-  { 0,               "default", NULL },
-  { GDK_ACTION_ASK,  "dnd-ask", NULL },
-  { GDK_ACTION_COPY, "copy",    NULL },
-  { GDK_ACTION_MOVE, "move",    NULL },
-  { GDK_ACTION_LINK, "alias",   NULL },
+  { 0,               "default",  NULL },
+  { GDK_ACTION_ASK,  "dnd-ask",  NULL },
+  { GDK_ACTION_COPY, "copy",     NULL },
+  { GDK_ACTION_MOVE, "dnd-move", NULL }, /* Not using move here, since move is stuck using
+                                          * a mismatched visual metaphor in Adwaita
+                                          */
+  { GDK_ACTION_LINK, "alias",    NULL },
 };
 
 GdkCursor *

gdk/gdkframeclockidle.c

@@ -192,13 +192,6 @@ compute_smooth_frame_time (GdkFrameClock *clock,
    *        and new_frame_time >= old_frame_time. */
   frames_passed = (new_frame_time - smoothed_frame_time_base + frame_interval / 2) / frame_interval;
 
-  if (frames_passed > 1)
-    gdk_profiler_add_markf ((smoothed_frame_time_base - (frame_interval * (frames_passed-1))) * 1000L,
-                            frame_interval * (frames_passed-1) * 1000L,
-                            "Dropped Frames",
-                            "%u frames may have been dropped",
-                            frames_passed-1);
-
   /* We use an approximately whole number of frames in the future from
    * last smoothed frame time. This way we avoid minor jitter in the
    * frame times making the animation speed uneven, but still animate

gdk/gdkglcontext.c

@@ -1956,8 +1956,6 @@ gdk_gl_context_get_glsl_version_string (GdkGLContext *self)
         return "#version 310 es";
       else if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
         return "#version 300 es";
-      else if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
-        return "#version 300 es";
       else
         return "#version 100";
     }
@@ -2198,12 +2196,78 @@ gdk_gl_context_import_dmabuf (GdkGLContext    *self,
 
   gdk_display_init_dmabuf (display);
 
-  if (!gdk_dmabuf_formats_contains (display->egl_external_formats, dmabuf->fourcc, dmabuf->modifier))
+  if (gdk_dmabuf_formats_contains (display->egl_dmabuf_formats, dmabuf->fourcc, dmabuf->modifier))
     {
+      /* This is the path for modern drivers that support modifiers */
+
+      if (!gdk_dmabuf_formats_contains (display->egl_external_formats, dmabuf->fourcc, dmabuf->modifier))
+        {
+          texture_id = gdk_gl_context_import_dmabuf_for_target (self,
+                                                                width, height,
+                                                                dmabuf,
+                                                                GL_TEXTURE_2D);
+          if (texture_id == 0)
+            {
+              GDK_DISPLAY_DEBUG (display, DMABUF,
+                                 "Import of %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf failed",
+                                 width, height,
+                                 (char *) &dmabuf->fourcc, dmabuf->modifier);
+              return 0;
+            }
+
+          GDK_DISPLAY_DEBUG (display, DMABUF,
+                             "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as GL_TEXTURE_2D texture",
+                             width, height,
+                             (char *) &dmabuf->fourcc, dmabuf->modifier);
+          *external = FALSE;
+          return texture_id;
+        }
+
+      if (!gdk_gl_context_get_use_es (self))
+        {
+          GDK_DISPLAY_DEBUG (display, DMABUF,
+                             "Can't import external_only %.4s:%#" G_GINT64_MODIFIER "x outside of GLES",
+                             (char *) &dmabuf->fourcc, dmabuf->modifier);
+          return 0;
+        }
+
       texture_id = gdk_gl_context_import_dmabuf_for_target (self,
                                                             width, height,
                                                             dmabuf,
-                                                            GL_TEXTURE_2D);
+                                                            GL_TEXTURE_EXTERNAL_OES);
+      if (texture_id == 0)
+        {
+          GDK_DISPLAY_DEBUG (display, DMABUF,
+                             "Import of external_only %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf failed",
+                             width, height,
+                             (char *) &dmabuf->fourcc, dmabuf->modifier);
+          return 0;
+        }
+
+      GDK_DISPLAY_DEBUG (display, DMABUF,
+                         "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as GL_TEXTURE_EXTERNAL_OES texture",
+                         width, height,
+                         (char *) &dmabuf->fourcc, dmabuf->modifier);
+      *external = TRUE;
+      return texture_id;
+    }
+  else
+    {
+      /* This is the opportunistic path.
+       * We hit it both for drivers that do not support modifiers as well as for dmabufs
+       * that the driver did not explicitly advertise. */
+      int target;
+
+      if (gdk_gl_context_get_use_es (self))
+        target = GL_TEXTURE_EXTERNAL_OES;
+      else
+        target = GL_TEXTURE_2D;
+
+      texture_id = gdk_gl_context_import_dmabuf_for_target (self,
+                                                            width, height,
+                                                            dmabuf,
+                                                            target);
+
       if (texture_id == 0)
         {
           GDK_DISPLAY_DEBUG (display, DMABUF,
@@ -2214,40 +2278,13 @@ gdk_gl_context_import_dmabuf (GdkGLContext    *self,
         }
 
       GDK_DISPLAY_DEBUG (display, DMABUF,
-                         "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as GL_TEXTURE_2D texture",
+                         "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as %s texture",
                          width, height,
-                         (char *) &dmabuf->fourcc, dmabuf->modifier);
-      *external = FALSE;
+                         (char *) &dmabuf->fourcc, dmabuf->modifier,
+                         target == GL_TEXTURE_EXTERNAL_OES ? "GL_TEXTURE_EXTERNAL_OES" : "GL_TEXTURE_2D");
+      *external = target == GL_TEXTURE_EXTERNAL_OES;
       return texture_id;
     }
-
-  if (!gdk_gl_context_get_use_es (self))
-    {
-      GDK_DISPLAY_DEBUG (display, DMABUF,
-                         "Can't import external_only %.4s:%#" G_GINT64_MODIFIER "x outside of GLES",
-                         (char *) &dmabuf->fourcc, dmabuf->modifier);
-      return 0;
-    }
-
-  texture_id = gdk_gl_context_import_dmabuf_for_target (self,
-                                                        width, height,
-                                                        dmabuf,
-                                                        GL_TEXTURE_EXTERNAL_OES);
-  if (texture_id == 0)
-    {
-      GDK_DISPLAY_DEBUG (display, DMABUF,
-                         "Import of external_only %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf failed",
-                         width, height,
-                         (char *) &dmabuf->fourcc, dmabuf->modifier);
-      return 0;
-    }
-
-  GDK_DISPLAY_DEBUG (display, DMABUF,
-                     "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as GL_TEXTURE_EXTERNAL_OES texture",
-                     width, height,
-                     (char *) &dmabuf->fourcc, dmabuf->modifier);
-  *external = TRUE;
-  return texture_id;
 }
 
 gboolean

gdk/gdkmonitor.c

@@ -744,3 +744,11 @@ gdk_monitor_set_description (GdkMonitor *monitor,
   g_object_notify_by_pspec (G_OBJECT (monitor), props[PROP_DESCRIPTION]);
 }
 
+#define MM_PER_INCH 25.4
+
+double
+gdk_monitor_get_dpi (GdkMonitor *monitor)
+{
+  return MAX ((monitor->geometry.width * monitor->scale) / (monitor->width_mm / MM_PER_INCH),
+              (monitor->geometry.height * monitor->scale) / (monitor->height_mm / MM_PER_INCH));
+}

gdk/gdkmonitorprivate.h

@@ -76,6 +76,7 @@ void            gdk_monitor_set_subpixel_layout (GdkMonitor        *monitor,
 void            gdk_monitor_invalidate          (GdkMonitor *monitor);
 void            gdk_monitor_set_description     (GdkMonitor *monitor,
                                                  const char *description);
+double          gdk_monitor_get_dpi             (GdkMonitor *monitor);
 
 G_END_DECLS
 

gdk/gdkpaintable.h

@@ -59,7 +59,7 @@ typedef enum {
  * @get_current_image: return a `GdkPaintable` that does not change over
  *   time. This means the `GDK_PAINTABLE_STATIC_SIZE` and
  *   `GDK_PAINTABLE_STATIC_CONTENTS` flag are set.
- * @get_flags: Get the flags for this instance. See [enum@Gdk.PaintableFlags]
+ * @get_flags: Get the flags for this instance. See [flags@Gdk.PaintableFlags]
  *   for details.
  * @get_intrinsic_width: The preferred width for this object to be
  *   snapshot at or 0 if none. This is purely a hint. The object must still

gdk/gdkrgba.c

@@ -98,9 +98,9 @@ gdk_rgba_free (GdkRGBA *rgba)
  * Returns: %TRUE if the @rgba is clear
  */
 gboolean
-gdk_rgba_is_clear (const GdkRGBA *rgba)
+(gdk_rgba_is_clear) (const GdkRGBA *rgba)
 {
-  return rgba->alpha < ((float) 0x00ff / (float) 0xffff);
+  return _gdk_rgba_is_clear (rgba);
 }
 
 /**
@@ -115,9 +115,9 @@ gdk_rgba_is_clear (const GdkRGBA *rgba)
  * Returns: %TRUE if the @rgba is opaque
  */
 gboolean
-gdk_rgba_is_opaque (const GdkRGBA *rgba)
+(gdk_rgba_is_opaque) (const GdkRGBA *rgba)
 {
-  return rgba->alpha > ((float)0xff00 / (float)0xffff);
+  return _gdk_rgba_is_opaque (rgba);
 }
 
 #define SKIP_WHITESPACES(s) while (*(s) == ' ') (s)++;
@@ -368,21 +368,10 @@ gdk_rgba_hash (gconstpointer p)
  * Returns: %TRUE if the two colors compare equal
  */
 gboolean
-gdk_rgba_equal (gconstpointer p1,
-                gconstpointer p2)
+(gdk_rgba_equal) (gconstpointer p1,
+                  gconstpointer p2)
 {
-  const GdkRGBA *rgba1, *rgba2;
-
-  rgba1 = p1;
-  rgba2 = p2;
-
-  if (rgba1->red == rgba2->red &&
-      rgba1->green == rgba2->green &&
-      rgba1->blue == rgba2->blue &&
-      rgba1->alpha == rgba2->alpha)
-    return TRUE;
-
-  return FALSE;
+  return _gdk_rgba_equal (p1, p2);
 }
 
 /**

gdk/gdkrgbaprivate.h

@@ -43,5 +43,34 @@
 gboolean               gdk_rgba_parser_parse                    (GtkCssParser           *parser,
                                                                  GdkRGBA                *rgba);
 
+#define gdk_rgba_is_clear(rgba) _gdk_rgba_is_clear (rgba)
+#define gdk_rgba_is_opaque(rgba) _gdk_rgba_is_opaque (rgba)
+#define gdk_rgba_equal(p1, p2) _gdk_rgba_equal (p1, p2)
+
+static inline gboolean
+_gdk_rgba_is_clear (const GdkRGBA *rgba)
+{
+  return rgba->alpha < ((float) 0x00ff / (float) 0xffff);
+}
+
+static inline gboolean
+_gdk_rgba_is_opaque (const GdkRGBA *rgba)
+{
+  return rgba->alpha > ((float)0xff00 / (float)0xffff);
+}
+
+static inline gboolean
+_gdk_rgba_equal (gconstpointer p1,
+                 gconstpointer p2)
+{
+  const GdkRGBA *rgba1 = p1;
+  const GdkRGBA *rgba2 = p2;
+
+  return rgba1->red == rgba2->red &&
+         rgba1->green == rgba2->green &&
+         rgba1->blue == rgba2->blue &&
+         rgba1->alpha == rgba2->alpha;
+}
+
 G_END_DECLS
 

gdk/gdksubsurface.c

@@ -48,6 +48,14 @@ gdk_subsurface_class_init (GdkSubsurfaceClass *class)
   object_class->finalize = gdk_subsurface_finalize;
 }
 
+/*< private >
+ * gdk_subsurface_get_parent:
+ * @subsurface: a `GdkSubsurface`
+ *
+ * Returns the parent surface of @subsurface.
+ *
+ * Returns: the parent surface
+ */
 GdkSurface *
 gdk_subsurface_get_parent (GdkSubsurface *subsurface)
 {
@@ -108,15 +116,41 @@ insert_subsurface (GdkSubsurface *subsurface,
     }
 }
 
+/*< private >
+ * gdk_subsurface_attach:
+ * @subsurface: the `GdkSubsurface`
+ * @texture: the texture to attach. This typically has to be a `GdkDmabufTexture`
+ * @source: the source rectangle (i.e. the subset of the texture) to display
+ * @dest: the dest rectangle, in application pixels, relative to the parent surface.
+ *   It must be integral in application and device pixels, or attaching will fail
+ * @transform: the transform to apply to the texture contents before displaying
+ * @background: (nullable): the background rectangle, in application pixels relative
+ *   to the parent surface. This tells GDK to put a black background of this
+ *   size below the subsurface. It must be integral in application and device pixels,
+ *   or attaching will fail
+ * @above: whether the subsurface should be above its sibling
+ * @sibling: (nullable): the sibling subsurface to stack relative to, or `NULL` to
+ *   stack relative to the parent surface
+ *
+ * Attaches content to a subsurface.
+ *
+ * This function takes all the necessary arguments to determine the subsurface
+ * configuration, including its position, size, content, background and stacking.
+ *
+ * Returns: `TRUE` if the attaching succeeded
+ */
 gboolean
 gdk_subsurface_attach (GdkSubsurface         *subsurface,
                        GdkTexture            *texture,
                        const graphene_rect_t *source,
                        const graphene_rect_t *dest,
+                       GdkTextureTransform    transform,
+                       const graphene_rect_t *background,
                        gboolean               above,
                        GdkSubsurface         *sibling)
 {
   GdkSurface *parent = subsurface->parent;
+  gboolean result;
 
   g_return_val_if_fail (GDK_IS_SUBSURFACE (subsurface), FALSE);
   g_return_val_if_fail (GDK_IS_TEXTURE (texture), FALSE);
@@ -130,6 +164,15 @@ gdk_subsurface_attach (GdkSubsurface         *subsurface,
   g_return_val_if_fail (sibling == NULL || GDK_IS_SUBSURFACE (sibling), FALSE);
   g_return_val_if_fail (sibling == NULL || sibling->parent == subsurface->parent, FALSE);
 
+  result = GDK_SUBSURFACE_GET_CLASS (subsurface)->attach (subsurface,
+                                                          texture,
+                                                          source,
+                                                          dest,
+                                                          transform,
+                                                          background,
+                                                          above,
+                                                          sibling);
+
   remove_subsurface (subsurface);
 
   if (sibling)
@@ -155,9 +198,17 @@ gdk_subsurface_attach (GdkSubsurface         *subsurface,
         }
     }
 
-  return GDK_SUBSURFACE_GET_CLASS (subsurface)->attach (subsurface, texture, source, dest, above, sibling);
+  return result;
 }
 
+/*< private >
+ * gdk_subsurface_detach:
+ * @subsurface: a `GdkSubsurface`
+ *
+ * Hides the subsurface.
+ *
+ * To show it again, you need to call gdk_subsurface_attach().
+ */
 void
 gdk_subsurface_detach (GdkSubsurface *subsurface)
 {
@@ -168,6 +219,14 @@ gdk_subsurface_detach (GdkSubsurface *subsurface)
   GDK_SUBSURFACE_GET_CLASS (subsurface)->detach (subsurface);
 }
 
+/*< private >
+ * gdk_subsurface_get_texture:
+ * @subsurface: a `GdkSubsurface`
+ *
+ * Gets the texture that is currently displayed by the subsurface.
+ *
+ * Returns: (nullable): the texture that is displayed
+ */
 GdkTexture *
 gdk_subsurface_get_texture (GdkSubsurface *subsurface)
 {
@@ -176,30 +235,138 @@ gdk_subsurface_get_texture (GdkSubsurface *subsurface)
   return GDK_SUBSURFACE_GET_CLASS (subsurface)->get_texture (subsurface);
 }
 
+/*< private >
+ * gdk_subsurface_get_source_rect:
+ * @subsurface: a `GdkSubsurface`
+ * @rect: (out caller-allocates): return location for the rectangle
+ *
+ * Returns the source rect that was specified in the most recent
+ * gdk_subsurface_attach() call for @subsurface.
+ */
 void
-gdk_subsurface_get_source (GdkSubsurface   *subsurface,
-                           graphene_rect_t *source)
+gdk_subsurface_get_source_rect (GdkSubsurface   *subsurface,
+                                graphene_rect_t *rect)
 {
   g_return_if_fail (GDK_IS_SUBSURFACE (subsurface));
-  g_return_if_fail (source != NULL);
+  g_return_if_fail (rect != NULL);
 
-  GDK_SUBSURFACE_GET_CLASS (subsurface)->get_source (subsurface, source);
+  GDK_SUBSURFACE_GET_CLASS (subsurface)->get_source_rect (subsurface, rect);
 }
 
+/*< private >
+ * gdk_subsurface_get_texture_rect:
+ * @subsurface: a `GdkSubsurface`
+ * @rect: (out caller-allocates): return location for the rectangle
+ *
+ * Returns the texture rect that was specified in the most recent
+ * gdk_subsurface_attach() call for @subsurface.
+ */
 void
-gdk_subsurface_get_dest (GdkSubsurface   *subsurface,
-                         graphene_rect_t *dest)
+gdk_subsurface_get_texture_rect (GdkSubsurface   *subsurface,
+                                 graphene_rect_t *rect)
 {
   g_return_if_fail (GDK_IS_SUBSURFACE (subsurface));
-  g_return_if_fail (dest != NULL);
+  g_return_if_fail (rect != NULL);
 
-  GDK_SUBSURFACE_GET_CLASS (subsurface)->get_dest (subsurface, dest);
+  GDK_SUBSURFACE_GET_CLASS (subsurface)->get_texture_rect (subsurface, rect);
 }
 
+/*< private >
+ * gdk_subsurface_is_above_parent:
+ * @subsurface: a `GdkSubsurface`
+ *
+ * Returns whether the subsurface is above the parent surface
+ * or below. Note that a subsurface can be above its parent
+ * surface, and still be covered by sibling subsurfaces.
+ *
+ * Returns: `TRUE` if @subsurface is above its parent
+ */
 gboolean
 gdk_subsurface_is_above_parent (GdkSubsurface *subsurface)
 {
-  g_return_val_if_fail (GDK_IS_SUBSURFACE (subsurface), TRUE);
+  g_return_val_if_fail (GDK_IS_SUBSURFACE (subsurface), FALSE);
 
   return subsurface->above_parent;
 }
+
+/*< private>
+ * gdk_subsurface_get_sibling:
+ * @subsurface: the `GdkSubsurface`
+ * @above: whether to get the subsurface above
+ *
+ * Returns the subsurface above (or below) @subsurface in
+ * the stacking order.
+ *
+ * Returns: the sibling, or `NULL` if there is none.
+ */
+GdkSubsurface *
+gdk_subsurface_get_sibling (GdkSubsurface *subsurface,
+                            gboolean       above)
+{
+  g_return_val_if_fail (GDK_IS_SUBSURFACE (subsurface), NULL);
+
+  if (above)
+    return subsurface->sibling_above;
+  else
+    return subsurface->sibling_below;
+}
+
+/*< private >
+ * gdk_subsurface_get_transform:
+ * @subsurface: a `GdkSubsurface`
+ *
+ * Returns the transform that was specified in the most recent call to
+ * gdk_subsurface_attach() call for @subsurface.
+ *
+ * Returns: the transform
+ */
+GdkTextureTransform
+gdk_subsurface_get_transform (GdkSubsurface *subsurface)
+{
+  g_return_val_if_fail (GDK_IS_SUBSURFACE (subsurface), GDK_TEXTURE_TRANSFORM_NORMAL);
+
+  return GDK_SUBSURFACE_GET_CLASS (subsurface)->get_transform (subsurface);
+}
+
+/*< private >
+ * gdk_subsurface_get_background_rect:
+ * @subsurface: a `GdkSubsurface`
+ * @rect: (out caller-allocates): return location for the rectangle
+ *
+ * Obtains the background rect that was specified in the most recent
+ * gdk_subsurface_attach() call for @subsurface.
+ *
+ * Returns: `TRUE` if @subsurface has a background
+ */
+gboolean
+gdk_subsurface_get_background_rect (GdkSubsurface   *subsurface,
+                                    graphene_rect_t *rect)
+{
+  g_return_val_if_fail (GDK_IS_SUBSURFACE (subsurface), FALSE);
+  g_return_val_if_fail (rect != NULL, FALSE);
+
+  return GDK_SUBSURFACE_GET_CLASS (subsurface)->get_background_rect (subsurface, rect);
+}
+
+/*< private >
+ * gdk_subsurface_get_bounds:
+ * @subsurface: a `GdkSubsurface`
+ * @bounds: (out caller-allocates): return location for the bounds
+ *
+ * Returns the bounds of the subsurface.
+ *
+ * The bounds are the union of the texture and background rects.
+ */
+void
+gdk_subsurface_get_bounds (GdkSubsurface   *subsurface,
+                           graphene_rect_t *bounds)
+{
+  graphene_rect_t background;
+
+  g_return_if_fail (GDK_IS_SUBSURFACE (subsurface));
+  g_return_if_fail (bounds != NULL);
+
+  gdk_subsurface_get_texture_rect (subsurface, bounds);
+  if (gdk_subsurface_get_background_rect (subsurface, &background))
+    graphene_rect_union (bounds, &background, bounds);
+}

gdk/gdksubsurfaceprivate.h

@@ -47,42 +47,68 @@ struct _GdkSubsurface
   GdkSubsurface *sibling_below;
 };
 
+typedef enum {
+  GDK_TEXTURE_TRANSFORM_NORMAL,
+  GDK_TEXTURE_TRANSFORM_90,
+  GDK_TEXTURE_TRANSFORM_180,
+  GDK_TEXTURE_TRANSFORM_270,
+  GDK_TEXTURE_TRANSFORM_FLIPPED,
+  GDK_TEXTURE_TRANSFORM_FLIPPED_90,
+  GDK_TEXTURE_TRANSFORM_FLIPPED_180,
+  GDK_TEXTURE_TRANSFORM_FLIPPED_270,
+} GdkTextureTransform;
 
 struct _GdkSubsurfaceClass
 {
   GObjectClass parent_class;
 
-  gboolean     (* attach)          (GdkSubsurface         *subsurface,
-                                    GdkTexture            *texture,
-                                    const graphene_rect_t *source,
-                                    const graphene_rect_t *dest,
-                                    gboolean               above,
-                                    GdkSubsurface         *sibling);
-  void         (* detach)          (GdkSubsurface         *subsurface);
-  GdkTexture * (* get_texture)     (GdkSubsurface         *subsurface);
-  void         (* get_source)      (GdkSubsurface         *subsurface,
-                                    graphene_rect_t       *source);
-  void         (* get_dest)        (GdkSubsurface         *subsurface,
-                                    graphene_rect_t       *dest);
+  gboolean     (* attach)              (GdkSubsurface         *subsurface,
+                                        GdkTexture            *texture,
+                                        const graphene_rect_t *source,
+                                        const graphene_rect_t *dest,
+                                        GdkTextureTransform    transform,
+                                        const graphene_rect_t *bg,
+                                        gboolean               above,
+                                        GdkSubsurface         *sibling);
+  void         (* detach)              (GdkSubsurface         *subsurface);
+  GdkTexture * (* get_texture)         (GdkSubsurface         *subsurface);
+  void         (* get_source_rect)     (GdkSubsurface         *subsurface,
+                                        graphene_rect_t       *rect);
+  void         (* get_texture_rect)    (GdkSubsurface         *subsurface,
+                                        graphene_rect_t       *rect);
+  GdkTextureTransform
+               (* get_transform)       (GdkSubsurface         *subsurface);
+  gboolean     (* get_background_rect) (GdkSubsurface         *subsurface,
+                                        graphene_rect_t       *rect);
 };
 
-GType           gdk_subsurface_get_type        (void) G_GNUC_CONST;
+GType           gdk_subsurface_get_type            (void) G_GNUC_CONST;
 
-GdkSurface *    gdk_subsurface_get_parent      (GdkSubsurface         *subsurface);
-gboolean        gdk_subsurface_attach          (GdkSubsurface         *subsurface,
-                                                GdkTexture            *texture,
-                                                const graphene_rect_t *source,
-                                                const graphene_rect_t *dest,
-                                                gboolean               above,
-                                                GdkSubsurface         *sibling);
-void            gdk_subsurface_detach          (GdkSubsurface         *subsurface);
-GdkTexture *    gdk_subsurface_get_texture     (GdkSubsurface         *subsurface);
-void            gdk_subsurface_get_source      (GdkSubsurface         *subsurface,
-                                                graphene_rect_t       *source);
-void            gdk_subsurface_get_dest        (GdkSubsurface         *subsurface,
-                                               graphene_rect_t       *dest);
-gboolean        gdk_subsurface_is_above_parent (GdkSubsurface         *subsurface);
+GdkSurface *    gdk_subsurface_get_parent          (GdkSubsurface         *subsurface);
 
+gboolean        gdk_subsurface_attach              (GdkSubsurface         *subsurface,
+                                                    GdkTexture            *texture,
+                                                    const graphene_rect_t *source,
+                                                    const graphene_rect_t *dest,
+                                                    GdkTextureTransform    transform,
+                                                    const graphene_rect_t *background,
+                                                    gboolean               above,
+                                                    GdkSubsurface         *sibling);
+void            gdk_subsurface_detach              (GdkSubsurface         *subsurface);
+GdkTexture *    gdk_subsurface_get_texture         (GdkSubsurface         *subsurface);
+void            gdk_subsurface_get_source_rect     (GdkSubsurface         *subsurface,
+                                                    graphene_rect_t       *rect);
+void            gdk_subsurface_get_texture_rect    (GdkSubsurface         *subsurface,
+                                                    graphene_rect_t       *rect);
+gboolean        gdk_subsurface_is_above_parent     (GdkSubsurface         *subsurface);
+GdkSubsurface * gdk_subsurface_get_sibling         (GdkSubsurface         *subsurface,
+                                                    gboolean               above);
+GdkTextureTransform
+                gdk_subsurface_get_transform       (GdkSubsurface         *subsurface);
+gboolean        gdk_subsurface_get_background_rect (GdkSubsurface         *subsurface,
+                                                    graphene_rect_t       *rect);
+void            gdk_subsurface_get_bounds          (GdkSubsurface         *subsurface,
+                                                    graphene_rect_t       *bounds);
 
 G_END_DECLS
 

gdk/gdktexture.c

@@ -563,7 +563,7 @@ gdk_texture_new_from_bytes_internal (GBytes  *bytes,
 {
   if (gdk_is_png (bytes))
     {
-      return gdk_load_png (bytes, error);
+      return gdk_load_png (bytes, NULL, error);
     }
   else if (gdk_is_jpeg (bytes))
     {

gdk/gdkvulkancontext.c

@@ -29,6 +29,7 @@
 #include "gdkdmabuffourccprivate.h"
 #include "gdkdmabuftextureprivate.h"
 #include "gdkdisplayprivate.h"
+#include "gdkprofilerprivate.h"
 #include <glib/gi18n-lib.h>
 #include <math.h>
 
@@ -57,6 +58,9 @@ static const GdkDebugKey gsk_vulkan_feature_keys[] = {
  *
  * Support for `GdkVulkanContext` is platform-specific and context creation
  * can fail, returning %NULL context.
+ *
+ * Deprecated: 4.14: GTK does not expose any Vulkan internals. This
+ *   struct is a leftover that was accidentally exposed.
  */
 
 typedef struct _GdkVulkanContextPrivate GdkVulkanContextPrivate;
@@ -603,7 +607,8 @@ physical_device_check_features (VkPhysicalDevice device)
     features |= GDK_VULKAN_FEATURE_YCBCR;
 
   if (physical_device_supports_extension (device, VK_KHR_EXTERNAL_MEMORY_FD_EXTENSION_NAME) &&
-      physical_device_supports_extension (device, VK_EXT_IMAGE_DRM_FORMAT_MODIFIER_EXTENSION_NAME))
+      physical_device_supports_extension (device, VK_EXT_IMAGE_DRM_FORMAT_MODIFIER_EXTENSION_NAME) &&
+      physical_device_supports_extension (device, VK_EXT_EXTERNAL_MEMORY_DMA_BUF_EXTENSION_NAME))
     features |= GDK_VULKAN_FEATURE_DMABUF;
 
   if (physical_device_supports_extension (device, VK_KHR_EXTERNAL_SEMAPHORE_FD_EXTENSION_NAME))
@@ -628,6 +633,7 @@ gdk_vulkan_context_begin_frame (GdkDrawContext *draw_context,
 {
   GdkVulkanContext *context = GDK_VULKAN_CONTEXT (draw_context);
   GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context);
+  VkResult acquire_result;
   guint i;
 
   if (depth != priv->current_format)
@@ -649,12 +655,29 @@ gdk_vulkan_context_begin_frame (GdkDrawContext *draw_context,
       cairo_region_union (priv->regions[i], region);
     }
 
-  GDK_VK_CHECK (vkAcquireNextImageKHR, gdk_vulkan_context_get_device (context),
-                                       priv->swapchain,
-                                       UINT64_MAX,
-                                       priv->draw_semaphore,
-                                       VK_NULL_HANDLE,
-                                       &priv->draw_index);
+acquire_next_image:
+  acquire_result = GDK_VK_CHECK (vkAcquireNextImageKHR, gdk_vulkan_context_get_device (context),
+                                                        priv->swapchain,
+                                                        UINT64_MAX,
+                                                        priv->draw_semaphore,
+                                                        VK_NULL_HANDLE,
+                                                        &priv->draw_index);
+  if ((acquire_result == VK_ERROR_OUT_OF_DATE_KHR) ||
+      (acquire_result == VK_SUBOPTIMAL_KHR))
+    {
+      GError *error = NULL;
+
+      GDK_DEBUG (VULKAN, "Recreating the swapchain");
+
+      if (!gdk_vulkan_context_check_swapchain (context, &error))
+        {
+          g_warning ("%s", error->message);
+          g_error_free (error);
+          return;
+        }
+
+       goto acquire_next_image;
+     }
 
   cairo_region_union (region, priv->regions[priv->draw_index]);
 }
@@ -1107,6 +1130,7 @@ gdk_display_load_pipeline_cache (GdkDisplay *display)
 static gboolean
 gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
 {
+  G_GNUC_UNUSED gint64 begin_time = GDK_PROFILER_CURRENT_TIME;
   GError *error = NULL;
   VkDevice device;
   VkPipelineCache cache;
@@ -1121,14 +1145,13 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
   GDK_VK_CHECK (vkGetPipelineCacheData, device, cache, &size, NULL);
   if (size == 0)
     return TRUE;
-  
+
   if (size == display->vk_pipeline_cache_size)
     {
       GDK_DEBUG (VULKAN, "pipeline cache size (%zu bytes) unchanged, skipping save", size);
       return TRUE;
     }
 
-
   data = g_malloc (size);
   if (GDK_VK_CHECK (vkGetPipelineCacheData, device, cache, &size, data) != VK_SUCCESS)
     {
@@ -1148,7 +1171,7 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
 
   file = gdk_vulkan_get_pipeline_cache_file (display);
 
-  GDK_DEBUG (VULKAN, "Saving pipeline cache to %s", g_file_peek_path (file));
+  GDK_DEBUG (VULKAN, "Saving pipeline cache of size %lu to %s", size, g_file_peek_path (file));
 
   if (!g_file_replace_contents (file,
                                 data,
@@ -1163,7 +1186,7 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
       if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_WRONG_ETAG))
         {
           VkPipelineCache new_cache;
-          
+
           GDK_DEBUG (VULKAN, "Pipeline cache file modified, merging into current");
           new_cache = gdk_display_load_pipeline_cache (display);
           if (new_cache)
@@ -1190,10 +1213,15 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
       return FALSE;
     }
 
+  gdk_profiler_end_markf (begin_time,
+                          "Save Vulkan pipeline cache", "%s size %lu",
+                          g_file_peek_path (file), size);
+
   g_object_unref (file);
   g_free (data);
   g_free (display->vk_pipeline_cache_etag);
   display->vk_pipeline_cache_etag = etag;
+  display->vk_pipeline_cache_size = size;
 
   return TRUE;
 }
@@ -1233,6 +1261,11 @@ gdk_display_create_pipeline_cache (GdkDisplay *display)
                                            },
                                            NULL,
                                            &display->vk_pipeline_cache);
+      GDK_DEBUG (VULKAN, "Creating empty pipeline cache");
+    }
+  else
+    {
+      GDK_DEBUG (VULKAN, "Loading pipeline cache (%lu bytes)", display->vk_pipeline_cache_size);
     }
 }
 
@@ -1342,6 +1375,7 @@ static gboolean
 gdk_display_create_vulkan_device (GdkDisplay  *display,
                                   GError     **error)
 {
+  G_GNUC_UNUSED gint64 start_time = GDK_PROFILER_CURRENT_TIME;
   uint32_t i, j, k;
   const char *override;
   gboolean list_devices;
@@ -1484,6 +1518,7 @@ gdk_display_create_vulkan_device (GdkDisplay  *display,
 
                   g_ptr_array_add (device_extensions, (gpointer) VK_KHR_EXTERNAL_MEMORY_FD_EXTENSION_NAME);
                   g_ptr_array_add (device_extensions, (gpointer) VK_KHR_EXTERNAL_MEMORY_EXTENSION_NAME);
+                  g_ptr_array_add (device_extensions, (gpointer) VK_EXT_EXTERNAL_MEMORY_DMA_BUF_EXTENSION_NAME);
 
                   g_ptr_array_add (device_extensions, (gpointer) VK_EXT_IMAGE_DRM_FORMAT_MODIFIER_EXTENSION_NAME);
                   g_ptr_array_add (device_extensions, (gpointer) VK_KHR_IMAGE_FORMAT_LIST_EXTENSION_NAME);
@@ -1550,6 +1585,8 @@ gdk_display_create_vulkan_device (GdkDisplay  *display,
                                        "Hum, what? This should not happen.")));
                 }
 
+              gdk_profiler_end_mark (start_time, "Create Vulkan device", NULL);
+
               return TRUE;
             }
         }
@@ -1588,6 +1625,7 @@ static gboolean
 gdk_display_create_vulkan_instance (GdkDisplay  *display,
                                     GError     **error)
 {
+  G_GNUC_UNUSED gint64 start_time = GDK_PROFILER_CURRENT_TIME;
   uint32_t i;
   GPtrArray *used_extensions;
   GPtrArray *used_layers;
@@ -1749,6 +1787,8 @@ gdk_display_create_vulkan_instance (GdkDisplay  *display,
 
   display->vk_shader_modules = g_hash_table_new (g_str_hash, g_str_equal);
 
+  gdk_profiler_end_mark (start_time, "Create Vulkan instance", NULL);
+
   return TRUE;
 }
 

gdk/loaders/gdkpng.c

@@ -127,15 +127,18 @@ png_simple_warning_callback (png_structp     png,
 }
 
 /* }}} */
-/* {{{ Public API */ 
+/* {{{ Public API */
 
 GdkTexture *
-gdk_load_png (GBytes  *bytes,
-              GError **error)
+gdk_load_png (GBytes      *bytes,
+              GHashTable  *options,
+              GError     **error)
 {
   png_io io;
   png_struct *png = NULL;
   png_info *info;
+  png_textp text;
+  int num_texts;
   guint width, height;
   gsize i, stride;
   int depth, color_type;
@@ -297,6 +300,17 @@ gdk_load_png (GBytes  *bytes,
   texture = gdk_memory_texture_new (width, height, format, out_bytes, stride);
   g_bytes_unref (out_bytes);
 
+  if (options && png_get_text (png, info, &text, &num_texts))
+    {
+      for (i = 0; i < num_texts; i++)
+        {
+          if (text->compression != -1)
+            continue;
+
+          g_hash_table_insert (options, g_strdup (text->key), g_strdup (text->text));
+        }
+    }
+
   g_free (row_pointers);
   png_destroy_read_struct (&png, &info, NULL);
 

gdk/loaders/gdkpngprivate.h

@@ -23,6 +23,7 @@
 #define PNG_SIGNATURE "\x89PNG"
 
 GdkTexture *gdk_load_png        (GBytes         *bytes,
+                                 GHashTable     *options,
                                  GError        **error);
 
 GBytes     *gdk_save_png        (GdkTexture     *texture);

gdk/macos/gdkmacoscursor.c

@@ -22,6 +22,7 @@
 #include <string.h>
 
 #include "gdkmacoscursor-private.h"
+#include "gdkcursorprivate.h"
 
 @interface NSCursor()
 -(long long)_coreCursorType;
@@ -217,9 +218,25 @@ _gdk_macos_cursor_get_ns_cursor (GdkCursor *cursor)
 
       if (name == NULL)
         {
-          nscursor = create_cursor_from_texture (gdk_cursor_get_texture (cursor),
-                                                 gdk_cursor_get_hotspot_x (cursor),
-                                                 gdk_cursor_get_hotspot_y (cursor));
+          GdkTexture *texture;
+          int hotspot_x, hotspot_y;
+
+          texture = gdk_cursor_get_texture (cursor);
+          hotspot_x = gdk_cursor_get_hotspot_x (cursor);
+          hotspot_y = gdk_cursor_get_hotspot_y (cursor);
+
+          if (texture == NULL)
+            {
+              int size = 32; // FIXME
+              int width, height;
+
+              texture = gdk_cursor_get_texture_for_size (cursor, size, 1,
+                                                         &width, &height,
+                                                         &hotspot_x, &hotspot_y);
+            }
+
+          nscursor = create_cursor_from_texture (texture, hotspot_x, hotspot_y);
+
           return nscursor;
         }
     }

gdk/macos/gdkmacosdisplay-private.h

@@ -161,7 +161,8 @@ void             _gdk_macos_display_send_event                     (GdkMacosDisp
 void             _gdk_macos_display_warp_pointer                   (GdkMacosDisplay *self,
                                                                     int              x,
                                                                     int              y);
-NSEvent         *_gdk_macos_display_get_nsevent                    (GdkEvent        *event);
+NSEvent         *_gdk_macos_display_get_matching_nsevent           (GdkEvent        *event);
+NSEvent         *_gdk_macos_display_get_exact_nsevent              (GdkEvent        *event);
 NSEvent         *_gdk_macos_display_get_last_nsevent               (void);
 GdkDrag         *_gdk_macos_display_find_drag                      (GdkMacosDisplay *self,
                                                                     NSInteger        sequence_number);

gdk/macos/gdkmacosdisplay.c

@@ -77,6 +77,9 @@ gdk_macos_display_get_setting (GdkDisplay  *display,
                                const char *setting,
                                GValue      *value)
 {
+  if (gdk_display_get_debug_flags (display) & GDK_DEBUG_DEFAULT_SETTINGS)
+    return FALSE;
+
   return _gdk_macos_display_get_setting (GDK_MACOS_DISPLAY (display), setting, value);
 }
 
@@ -991,17 +994,41 @@ _gdk_macos_display_warp_pointer (GdkMacosDisplay *self,
   CGWarpMouseCursorPosition ((CGPoint) { x, y });
 }
 
+/* Find the matching `NSEvent` for an `GdkEvent`. This function
+ * return the `NSEvent`, also for rewritten `GdkEvent`'s.
+ */
 NSEvent *
-_gdk_macos_display_get_nsevent (GdkEvent *event)
+_gdk_macos_display_get_matching_nsevent (GdkEvent *event)
 {
-  for (const GList *iter = event_map.head; iter; iter = iter->next)
+  for (GList *iter = event_map.head; iter; iter = iter->next)
     {
-      const GdkToNSEventMap *map = iter->data;
+      GdkToNSEventMap *map = iter->data;
 
       if (map->gdk_event->event_type == event->event_type &&
           map->gdk_event->device == event->device &&
           map->gdk_event->time == event->time)
-        return map->nsevent;
+        {
+          return map->nsevent;
+        }
+    }
+
+  return NULL;
+}
+
+/* Find the matching `NSEvent` for the original `GdkEvent`.
+ * If an event was rewritten, it returns `NULL`.
+ */
+NSEvent *
+_gdk_macos_display_get_exact_nsevent (GdkEvent *event)
+{
+  for (GList *iter = event_map.head; iter; iter = iter->next)
+    {
+      GdkToNSEventMap *map = iter->data;
+
+      if (map->gdk_event == event)
+        {
+          return map->nsevent;
+        }
     }
 
   return NULL;

gdk/macos/gdkmacoseventsource.c

@@ -738,7 +738,7 @@ gdk_macos_event_source_dispatch (GSource     *source,
 
       if (!handled)
         {
-          NSEvent *nsevent = _gdk_macos_display_get_nsevent (event);
+          NSEvent *nsevent = _gdk_macos_display_get_exact_nsevent (event);
           if (nsevent != NULL)
             [NSApp sendEvent: nsevent];
         }

gdk/macos/meson.build

@@ -61,7 +61,7 @@ gdk_macos_deps = [
 libgdk_c_args += ['-xobjective-c']
 
 libgdk_macos = static_library('gdk-macos',
-  gdk_macos_sources, gdkconfig, gdkenum_h,
+  sources: [ gdk_macos_sources, gdk_gen_headers ],
   include_directories: [ confinc, gdkinc, ],
   c_args: [ libgdk_c_args, common_cflags, ],
   link_with: [],

gdk/meson.build

@@ -202,7 +202,13 @@ gdkwayland_inc = include_directories('wayland')
 wlinc = include_directories('.')
 win32rcinc = include_directories('win32/rc')
 
-gdk_gen_headers = [gdkenum_h, gdkmarshal_h, gdkconfig, gdkversionmacros_h, gdk_visibility_h]
+gdk_gen_headers = [
+  gdkenum_h,
+  gdkmarshal_h,
+  gdkconfig,
+  gdkversionmacros_h,
+  gdk_visibility_h,
+]
 
 gdk_deps = [
   libm,
@@ -278,7 +284,7 @@ if gdk_backends.length() == 0
 endif
 
 libgdk = static_library('gdk',
-  sources: [gdk_sources, gdk_backends_gen_headers, gdkconfig],
+  sources: [gdk_sources, gdk_backends_gen_headers, gdk_gen_headers],
   dependencies: gdk_deps + [libgtk_css_dep],
   link_with: [libgtk_css],
   include_directories: [confinc, gdkx11_inc, wlinc],
@@ -290,7 +296,7 @@ libgdk = static_library('gdk',
 # list the dependencies and generated headers and such, for use in the
 # "public" libgtk_dep used by internal executables.
 libgdk_dep = declare_dependency(
-  sources: ['gdk.h', gdkconfig, gdkenum_h],
+  sources: ['gdk.h', gdk_gen_headers],
   include_directories: [confinc, gdkx11_inc, wlinc],
   dependencies: gdk_deps + [libgtk_css_dep],
 )

gdk/wayland/gdkcairocontext-wayland.c

@@ -198,17 +198,8 @@ static void
 gdk_wayland_cairo_context_empty_frame (GdkDrawContext *draw_context)
 {
   GdkSurface *surface = gdk_draw_context_get_surface (draw_context);
-  GdkWaylandSurface *impl = GDK_WAYLAND_SURFACE (surface);
 
-  if (!impl->has_pending_subsurface_commits)
-    return;
-
-  gdk_wayland_surface_sync (surface);
-  gdk_wayland_surface_request_frame (surface);
-
-  gdk_profiler_add_mark (GDK_PROFILER_CURRENT_TIME, 0, "Wayland surface commit", NULL);
-  gdk_wayland_surface_commit (surface);
-  gdk_wayland_surface_notify_committed (surface);
+  gdk_wayland_surface_handle_empty_frame (surface);
 }
 
 static void

gdk/wayland/gdkcursor-wayland.c

@@ -79,6 +79,7 @@ static const struct {
   { "move",         "dnd-move" },
   { "no-drop",      "dnd-none" },
   { "dnd-ask",      "dnd-copy" }, /* not CSS, but we want to guarantee it anyway */
+  { "dnd-move",     "default" },
   { "not-allowed",  "crossed_circle" },
   { "grab",         "hand2" },
   { "grabbing",     "hand2" },
@@ -154,31 +155,39 @@ static const struct wl_buffer_listener buffer_listener = {
 struct wl_buffer *
 _gdk_wayland_cursor_get_buffer (GdkWaylandDisplay *display,
                                 GdkCursor         *cursor,
-                                guint              desired_scale,
+                                double             desired_scale,
+                                gboolean           use_viewporter,
                                 guint              image_index,
                                 int               *hotspot_x,
                                 int               *hotspot_y,
                                 int               *width,
                                 int               *height,
-                                int               *scale)
+                                double            *scale)
 {
   GdkTexture *texture;
 
   if (gdk_cursor_get_name (cursor))
     {
       struct wl_cursor *c;
+      int scale_factor;
 
       if (g_str_equal (gdk_cursor_get_name (cursor), "none"))
-        goto none;
+        {
+          *hotspot_x = *hotspot_y = 0;
+          *width = *height = 0;
+          *scale = 1;
+          return NULL;
+        }
+
+      scale_factor = (int) ceil (desired_scale);
 
       c = gdk_wayland_cursor_load_for_name (display,
-                                            _gdk_wayland_display_get_cursor_theme (display),
-                                            desired_scale,
+                                            display->cursor_theme,
+                                            scale_factor,
                                             gdk_cursor_get_name (cursor));
       if (c && c->image_count > 0)
         {
           struct wl_cursor_image *image;
-          int cursor_scale;
 
           if (image_index >= c->image_count)
             {
@@ -190,27 +199,27 @@ _gdk_wayland_cursor_get_buffer (GdkWaylandDisplay *display,
 
           image = c->images[image_index];
 
-          cursor_scale = desired_scale;
-          if ((image->width % cursor_scale != 0) ||
-              (image->height % cursor_scale != 0))
+          *width = display->cursor_theme_size;
+          *height = display->cursor_theme_size;
+          *scale = image->width / (double) *width;
+          *hotspot_x = image->hotspot_x / scale_factor;
+          *hotspot_y = image->hotspot_y / scale_factor;
+
+          if (*scale != scale_factor && !use_viewporter)
             {
-              g_warning (G_STRLOC " cursor image size (%dx%d) not an integer "
-                         "multiple of scale (%d)", image->width, image->height,
-                         cursor_scale);
-              cursor_scale = 1;
+              g_warning (G_STRLOC " cursor image size (%d) not an integer "
+                         "multiple of theme size (%d)", image->width, *width);
+              *width = image->width;
+              *height = image->height;
+              *hotspot_x = image->hotspot_x;
+              *hotspot_y = image->hotspot_y;
+              *scale = 1;
             }
 
-          *hotspot_x = image->hotspot_x / cursor_scale;
-          *hotspot_y = image->hotspot_y / cursor_scale;
-
-          *width = image->width / cursor_scale;
-          *height = image->height / cursor_scale;
-          *scale = cursor_scale;
-
           return wl_cursor_image_get_buffer (image);
         }
     }
-  else
+  else if (gdk_cursor_get_texture (cursor))
     {
       cairo_surface_t *surface;
       struct wl_buffer *buffer;
@@ -225,7 +234,7 @@ from_texture:
                                                             gdk_texture_get_width (texture),
                                                             gdk_texture_get_height (texture),
                                                             &GDK_FRACTIONAL_SCALE_INIT_INT (1));
-          
+
           gdk_texture_download (texture,
                                 cairo_image_surface_get_data (surface),
                                 cairo_image_surface_get_stride (surface));
@@ -249,29 +258,63 @@ from_texture:
 
       return buffer;
     }
+  else
+    {
+      if (!use_viewporter)
+        *scale = ceil (desired_scale);
+      else
+        *scale = desired_scale;
+
+      texture = gdk_cursor_get_texture_for_size (cursor,
+                                                 display->cursor_theme_size,
+                                                 *scale,
+                                                 width,
+                                                 height,
+                                                 hotspot_x,
+                                                 hotspot_y);
+
+      if (texture)
+        {
+          cairo_surface_t *surface;
+          struct wl_buffer *buffer;
+
+          surface = gdk_wayland_display_create_shm_surface (display,
+                                                            gdk_texture_get_width (texture),
+                                                            gdk_texture_get_height (texture),
+                                                            &GDK_FRACTIONAL_SCALE_INIT_INT (1));
+
+          gdk_texture_download (texture,
+                                cairo_image_surface_get_data (surface),
+                                cairo_image_surface_get_stride (surface));
+          cairo_surface_mark_dirty (surface);
+
+          buffer = _gdk_wayland_shm_surface_get_wl_buffer (surface);
+          wl_buffer_add_listener (buffer, &buffer_listener, surface);
+
+          g_object_unref (texture);
+
+          return buffer;
+        }
+    }
 
   if (gdk_cursor_get_fallback (cursor))
-    return _gdk_wayland_cursor_get_buffer (display,
-                                           gdk_cursor_get_fallback (cursor), 
-                                           desired_scale,
-                                           image_index,
-                                           hotspot_x, hotspot_y,
-                                           width, height,
-                                           scale);
+    {
+      return _gdk_wayland_cursor_get_buffer (display,
+                                             gdk_cursor_get_fallback (cursor),
+                                             desired_scale,
+                                             use_viewporter,
+                                             image_index,
+                                             hotspot_x, hotspot_y,
+                                             width, height,
+                                             scale);
+    }
   else
     {
       texture = gdk_texture_new_from_resource ("/org/gtk/libgdk/cursor/default");
       goto from_texture;
     }
 
-none:
-  *hotspot_x = 0;
-  *hotspot_y = 0;
-  *width = 0;
-  *height = 0;
-  *scale = 1;
-
-  return NULL;
+  g_assert_not_reached ();
 }
 
 guint

gdk/wayland/gdkdevice-wayland-private.h

@@ -62,6 +62,7 @@ struct _GdkWaylandPointerData {
   uint32_t grab_time;
 
   struct wl_surface *pointer_surface;
+  struct wp_viewport *pointer_surface_viewport;
   guint cursor_is_default: 1;
   GdkCursor *cursor;
   guint cursor_timeout_id;
@@ -69,7 +70,7 @@ struct _GdkWaylandPointerData {
   guint cursor_image_delay;
   guint touchpad_event_sequence;
 
-  guint current_output_scale;
+  double current_output_scale;
   GSList *pointer_surface_outputs;
 
   /* Accumulated event data for a pointer frame */
@@ -182,6 +183,8 @@ struct _GdkWaylandSeat
   GdkWaylandPointerData pointer_info;
   GdkWaylandPointerData touch_info;
 
+  uint32_t latest_touch_down_serial;
+
   GdkModifierType key_modifiers;
   GdkSurface *keyboard_focus;
   GdkSurface *grab_surface;

gdk/wayland/gdkdevice-wayland.c

@@ -260,18 +260,25 @@ gdk_wayland_device_update_surface_cursor (GdkDevice *device)
   GdkWaylandPointerData *pointer =
     gdk_wayland_device_get_pointer (wayland_device);
   struct wl_buffer *buffer;
-  int x, y, w, h, scale;
+  int x, y, w, h;
+  double scale;
   guint next_image_index, next_image_delay;
   gboolean retval = G_SOURCE_REMOVE;
   GdkWaylandTabletData *tablet;
+  gboolean use_viewport;
 
   tablet = gdk_wayland_seat_find_tablet (seat, device);
 
+  use_viewport = pointer->pointer_surface_viewport != NULL;
+  if (g_getenv ("NO_POINTER_VIEWPORT"))
+    use_viewport = FALSE;
+
   if (pointer->cursor)
     {
       buffer = _gdk_wayland_cursor_get_buffer (GDK_WAYLAND_DISPLAY (seat->display),
                                                pointer->cursor,
                                                pointer->current_output_scale,
+                                               use_viewport,
                                                pointer->cursor_image_index,
                                                &x, &y, &w, &h, &scale);
     }
@@ -310,7 +317,17 @@ gdk_wayland_device_update_surface_cursor (GdkDevice *device)
   if (buffer)
     {
       wl_surface_attach (pointer->pointer_surface, buffer, 0, 0);
-      wl_surface_set_buffer_scale (pointer->pointer_surface, scale);
+      if (use_viewport)
+        {
+          wp_viewport_set_source (pointer->pointer_surface_viewport,
+                                  wl_fixed_from_int (0),
+                                  wl_fixed_from_int (0),
+                                  wl_fixed_from_double (w * scale),
+                                  wl_fixed_from_double (h * scale));
+          wp_viewport_set_destination (pointer->pointer_surface_viewport, w, h);
+        }
+      else if (wl_surface_get_version (pointer->pointer_surface) >= WL_SURFACE_SET_BUFFER_SCALE_SINCE_VERSION)
+        wl_surface_set_buffer_scale (pointer->pointer_surface, scale);
       wl_surface_damage (pointer->pointer_surface,  0, 0, w, h);
       wl_surface_commit (pointer->pointer_surface);
     }

gdk/wayland/gdkdisplay-wayland.c

@@ -58,6 +58,7 @@
 #include <wayland/xdg-foreign-unstable-v2-client-protocol.h>
 #include <wayland/server-decoration-client-protocol.h>
 #include "linux-dmabuf-unstable-v1-client-protocol.h"
+#include "presentation-time-client-protocol.h"
 
 #include "wm-button-layout-translation.h"
 
@@ -95,7 +96,6 @@
 #define GTK_SHELL1_VERSION       5
 #define OUTPUT_VERSION_WITH_DONE 2
 #define NO_XDG_OUTPUT_DONE_SINCE_VERSION 3
-#define XDG_ACTIVATION_VERSION   1
 #define OUTPUT_VERSION           3
 
 #ifdef HAVE_TOPLEVEL_STATE_SUSPENDED
@@ -105,6 +105,9 @@
 #endif
 
 static void _gdk_wayland_display_load_cursor_theme (GdkWaylandDisplay *display_wayland);
+static void _gdk_wayland_display_set_cursor_theme  (GdkDisplay        *display,
+                                                    const char        *name,
+                                                    int                size);
 
 G_DEFINE_TYPE (GdkWaylandDisplay, gdk_wayland_display, GDK_TYPE_DISPLAY)
 
@@ -284,93 +287,6 @@ static const struct wl_shm_listener wl_shm_listener = {
   wl_shm_format
 };
 
-static void
-linux_dmabuf_done (void *data,
-                   struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1)
-{
-  GDK_DEBUG (MISC, "dmabuf feedback done");
-}
-
-static void
-linux_dmabuf_format_table (void *data,
-                           struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                           int32_t fd,
-                           uint32_t size)
-{
-  GdkWaylandDisplay *display_wayland = data;
-
-  display_wayland->linux_dmabuf_n_formats = size / 16;
-  display_wayland->linux_dmabuf_formats = mmap (NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
-
-  GDK_DEBUG (MISC, "got dmabuf format table (%lu entries)", display_wayland->linux_dmabuf_n_formats);
-}
-
-static void
-linux_dmabuf_main_device (void *data,
-                          struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                          struct wl_array *device)
-{
-  dev_t dev G_GNUC_UNUSED = *(dev_t *)device->data;
-
-  GDK_DEBUG (MISC, "got dmabuf main device: %u %u", major (dev), minor (dev));
-}
-
-static void
-linux_dmabuf_tranche_done (void *data,
-                           struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1)
-{
-  GDK_DEBUG (MISC, "dmabuf feedback tranche done");
-}
-
-static void
-linux_dmabuf_tranche_target_device (void *data,
-                                    struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                                    struct wl_array *device)
-{
-  dev_t dev G_GNUC_UNUSED = *(dev_t *)device->data;
-
-  GDK_DEBUG (MISC, "got dmabuf tranche target device: %u %u", major (dev), minor (dev));
-}
-
-static void
-linux_dmabuf_tranche_formats (void *data,
-                              struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                              struct wl_array *indices)
-{
-  GdkWaylandDisplay *display_wayland = data;
-
-  GDK_DEBUG (MISC, "got dmabuf tranche formats (%lu entries):", indices->size / sizeof (guint16));
-  guint16 *pos;
-
-  wl_array_for_each (pos, indices)
-    {
-      LinuxDmabufFormat *fmt G_GNUC_UNUSED = &display_wayland->linux_dmabuf_formats[*pos];
-      uint32_t f G_GNUC_UNUSED = fmt->fourcc;
-      uint64_t m G_GNUC_UNUSED = fmt->modifier;
-      GDK_DEBUG (MISC, "  %.4s:%#" G_GINT64_MODIFIER "x", (char *) &f, m);
-    }
-}
-
-static void
-linux_dmabuf_tranche_flags (void *data,
-                            struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                            uint32_t flags)
-{
-  GDK_DEBUG (MISC,
-             "got dmabuf tranche flags: %s",
-             flags & ZWP_LINUX_DMABUF_FEEDBACK_V1_TRANCHE_FLAGS_SCANOUT ? "scanout" : "");
-}
-
-static const struct zwp_linux_dmabuf_feedback_v1_listener linux_dmabuf_feedback_listener = {
-  linux_dmabuf_done,
-  linux_dmabuf_format_table,
-  linux_dmabuf_main_device,
-  linux_dmabuf_tranche_done,
-  linux_dmabuf_tranche_target_device,
-  linux_dmabuf_tranche_formats,
-  linux_dmabuf_tranche_flags,
-};
-
 static void
 server_decoration_manager_default_mode (void                                          *data,
                                         struct org_kde_kwin_server_decoration_manager *manager,
@@ -437,7 +353,7 @@ gdk_registry_handle_global (void               *data,
     {
       display_wayland->compositor =
         wl_registry_bind (display_wayland->wl_registry, id,
-                          &wl_compositor_interface, MIN (version, 5));
+                          &wl_compositor_interface, MIN (version, 6));
     }
   else if (strcmp (interface, "wl_shm") == 0)
     {
@@ -447,12 +363,14 @@ gdk_registry_handle_global (void               *data,
     }
   else if (strcmp (interface, "zwp_linux_dmabuf_v1") == 0 && version >= 4)
     {
+      struct zwp_linux_dmabuf_feedback_v1 *feedback;
+
       display_wayland->linux_dmabuf =
         wl_registry_bind (display_wayland->wl_registry, id, &zwp_linux_dmabuf_v1_interface, version);
-      display_wayland->linux_dmabuf_feedback =
-        zwp_linux_dmabuf_v1_get_default_feedback (display_wayland->linux_dmabuf);
-     zwp_linux_dmabuf_feedback_v1_add_listener (display_wayland->linux_dmabuf_feedback,
-                                                &linux_dmabuf_feedback_listener, display_wayland);
+      feedback = zwp_linux_dmabuf_v1_get_default_feedback (display_wayland->linux_dmabuf);
+      display_wayland->dmabuf_formats_info = dmabuf_formats_info_new (GDK_DISPLAY (display_wayland),
+                                                                      "default",
+                                                                      feedback);
       _gdk_wayland_display_async_roundtrip (display_wayland);
     }
   else if (strcmp (interface, "xdg_wm_base") == 0)
@@ -585,24 +503,34 @@ gdk_registry_handle_global (void               *data,
     {
       display_wayland->xdg_activation =
         wl_registry_bind (display_wayland->wl_registry, id,
-                          &xdg_activation_v1_interface,
-                          MIN (version, XDG_ACTIVATION_VERSION));
+                          &xdg_activation_v1_interface, 1);
     }
   else if (strcmp (interface, "wp_fractional_scale_manager_v1") == 0)
     {
       display_wayland->fractional_scale =
         wl_registry_bind (display_wayland->wl_registry, id,
-                          &wp_fractional_scale_manager_v1_interface,
-                          MIN (version, 1));
+                          &wp_fractional_scale_manager_v1_interface, 1);
     }
   else if (strcmp (interface, "wp_viewporter") == 0)
     {
       display_wayland->viewporter =
         wl_registry_bind (display_wayland->wl_registry, id,
-                          &wp_viewporter_interface,
+                          &wp_viewporter_interface, 1);
+    }
+  else if (strcmp (interface, "wp_presentation") == 0)
+    {
+      display_wayland->presentation =
+        wl_registry_bind (display_wayland->wl_registry, id,
+                          &wp_presentation_interface,
+                          MIN (version, 1));
+    }
+  else if (strcmp (interface, wp_single_pixel_buffer_manager_v1_interface.name) == 0)
+    {
+      display_wayland->single_pixel_buffer =
+        wl_registry_bind (display_wayland->wl_registry, id,
+                          &wp_single_pixel_buffer_manager_v1_interface,
                           MIN (version, 1));
     }
-
 
   g_hash_table_insert (display_wayland->known_globals,
                        GUINT_TO_POINTER (id), g_strdup (interface));
@@ -700,7 +628,8 @@ _gdk_wayland_display_open (const char *display_name)
   process_on_globals_closures (display_wayland);
 
   /* Wait for initializing to complete. This means waiting for all
-   * asynchronous roundtrips that were triggered during initial roundtrip. */
+   * asynchronous roundtrips that were triggered during initial roundtrip.
+   */
   while (display_wayland->async_roundtrips != NULL)
     {
       if (wl_display_dispatch (display_wayland->wl_display) < 0)
@@ -710,6 +639,18 @@ _gdk_wayland_display_open (const char *display_name)
         }
     }
 
+  /* Check that we got all the required globals */
+  if (display_wayland->compositor == NULL ||
+      display_wayland->shm == NULL ||
+      display_wayland->data_device_manager == NULL)
+    {
+      g_warning ("The Wayland compositor does not provide one or more of the required interfaces, "
+                 "not using Wayland display");
+      g_object_unref (display);
+
+      return NULL;
+    }
+
   if (display_wayland->xdg_wm_base_id)
     {
       display_wayland->shell_variant = GDK_WAYLAND_SHELL_VARIANT_XDG_SHELL;
@@ -799,10 +740,10 @@ gdk_wayland_display_dispose (GObject *object)
   g_clear_pointer (&display_wayland->xdg_activation, xdg_activation_v1_destroy);
   g_clear_pointer (&display_wayland->fractional_scale, wp_fractional_scale_manager_v1_destroy);
   g_clear_pointer (&display_wayland->viewporter, wp_viewporter_destroy);
+  g_clear_pointer (&display_wayland->presentation, wp_presentation_destroy);
+  g_clear_pointer (&display_wayland->single_pixel_buffer, wp_single_pixel_buffer_manager_v1_destroy);
   g_clear_pointer (&display_wayland->linux_dmabuf, zwp_linux_dmabuf_v1_destroy);
-  g_clear_pointer (&display_wayland->linux_dmabuf_feedback, zwp_linux_dmabuf_feedback_v1_destroy);
-  if (display_wayland->linux_dmabuf_formats)
-    munmap (display_wayland->linux_dmabuf_formats, display_wayland->linux_dmabuf_n_formats * 16);
+  g_clear_pointer (&display_wayland->dmabuf_formats_info, dmabuf_formats_info_free);
 
   g_clear_pointer (&display_wayland->shm, wl_shm_destroy);
   g_clear_pointer (&display_wayland->wl_registry, wl_registry_destroy);
@@ -1104,7 +1045,7 @@ G_GNUC_END_IGNORE_DEPRECATIONS
   display_class->get_monitors = gdk_wayland_display_get_monitors;
   display_class->get_monitor_at_surface = gdk_wayland_display_get_monitor_at_surface;
   display_class->get_setting = gdk_wayland_display_get_setting;
-  display_class->set_cursor_theme = gdk_wayland_display_set_cursor_theme;
+  display_class->set_cursor_theme = _gdk_wayland_display_set_cursor_theme;
 }
 
 static void
@@ -1177,11 +1118,22 @@ get_cursor_theme (GdkWaylandDisplay *display_wayland,
  * @size: the size to use for cursors
  *
  * Sets the cursor theme for the given @display.
+ *
+ * Deprecated: 4.16: Use the cursor-related properties of
+ *   [GtkSettings](../gtk4/class.Settings.html) to set the cursor theme
  */
 void
 gdk_wayland_display_set_cursor_theme (GdkDisplay *display,
                                       const char *name,
                                       int         size)
+{
+  _gdk_wayland_display_set_cursor_theme (display, name, size);
+}
+
+static void
+_gdk_wayland_display_set_cursor_theme (GdkDisplay *display,
+                                       const char *name,
+                                       int         size)
 {
   GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY(display);
   struct wl_cursor_theme *theme;
@@ -1250,7 +1202,7 @@ _gdk_wayland_display_load_cursor_theme (GdkWaylandDisplay *display_wayland)
   else
     name = "default";
 
-  gdk_wayland_display_set_cursor_theme (GDK_DISPLAY (display_wayland), name, size);
+  _gdk_wayland_display_set_cursor_theme (GDK_DISPLAY (display_wayland), name, size);
   g_value_unset (&v);
 
   gdk_profiler_end_mark (before, "Wayland cursor theme load", NULL);
@@ -1786,6 +1738,7 @@ static TranslationEntry translations[] = {
   { FALSE, "org.gnome.desktop.interface", "font-hinting", "gtk-xft-hinting", G_TYPE_NONE, { .i = 1 } },
   { FALSE, "org.gnome.desktop.interface", "font-hinting", "gtk-xft-hintstyle", G_TYPE_NONE, { .i = 1 } },
   { FALSE, "org.gnome.desktop.interface", "font-rgba-order", "gtk-xft-rgba", G_TYPE_NONE, { .i = 0 } },
+  { FALSE, "org.gnome.desktop.interface", "font-rendering", "gtk-font-rendering", G_TYPE_ENUM, { .i = 0 } },
   { FALSE, "org.gnome.settings-daemon.plugins.xsettings", "antialiasing", "gtk-xft-antialias", G_TYPE_NONE, { .i = 1 } },
   { FALSE, "org.gnome.settings-daemon.plugins.xsettings", "hinting", "gtk-xft-hinting", G_TYPE_NONE, { .i = 1 } },
   { FALSE, "org.gnome.settings-daemon.plugins.xsettings", "hinting", "gtk-xft-hintstyle", G_TYPE_NONE, { .i = 1 } },
@@ -1877,6 +1830,7 @@ apply_portal_setting (TranslationEntry *entry,
       entry->fallback.s = g_intern_string (g_variant_get_string (value, NULL));
       break;
     case G_TYPE_INT:
+    case G_TYPE_ENUM:
       entry->fallback.i = g_variant_get_int32 (value);
       break;
     case G_TYPE_BOOLEAN:
@@ -1996,9 +1950,10 @@ init_settings (GdkDisplay *display)
 
       g_variant_get (ret, "(a{sa{sv}})", &iter);
 
-      if (g_variant_n_children (ret) == 0)
+      if (g_variant_iter_n_children (iter) == 0)
         {
           g_debug ("Received no portal settings");
+          g_clear_pointer (&iter, g_variant_iter_free);
           g_clear_pointer (&ret, g_variant_unref);
 
           goto fallback;
@@ -2125,6 +2080,9 @@ set_value_from_entry (GdkDisplay       *display,
         case G_TYPE_BOOLEAN:
           g_value_set_boolean (value, entry->fallback.b);
           break;
+        case G_TYPE_ENUM:
+          g_value_set_enum (value, entry->fallback.i);
+          break;
         case G_TYPE_NONE:
           if (g_str_equal (entry->setting, "gtk-fontconfig-timestamp"))
             g_value_set_uint (value, (guint)entry->fallback.i);
@@ -2175,6 +2133,11 @@ set_value_from_entry (GdkDisplay       *display,
                                   ? g_settings_get_boolean (settings, entry->key)
                                   : entry->fallback.b);
       break;
+    case G_TYPE_ENUM:
+      g_value_set_enum (value, settings && entry->valid
+                               ? g_settings_get_enum (settings, entry->key)
+                               : entry->fallback.i);
+      break;
     case G_TYPE_NONE:
       if (g_str_equal (entry->setting, "gtk-fontconfig-timestamp"))
         g_value_set_uint (value, (guint)entry->fallback.i);

gdk/wayland/gdkdisplay-wayland.h

@@ -39,6 +39,8 @@
 #include <gdk/wayland/xdg-activation-v1-client-protocol.h>
 #include <gdk/wayland/fractional-scale-v1-client-protocol.h>
 #include <gdk/wayland/viewporter-client-protocol.h>
+#include <gdk/wayland/presentation-time-client-protocol.h>
+#include <gdk/wayland/single-pixel-buffer-v1-client-protocol.h>
 
 #include <glib.h>
 #include <gdk/gdkkeys.h>
@@ -47,6 +49,7 @@
 
 #include "gdkdisplayprivate.h"
 #include "gdkwaylanddevice.h"
+#include "gdkdmabuf-wayland-private.h"
 #include "cursor/wayland-cursor.h"
 
 #include <epoxy/egl.h>
@@ -71,13 +74,6 @@ typedef enum _GdkWaylandShellVariant
   GDK_WAYLAND_SHELL_VARIANT_ZXDG_SHELL_V6
 } GdkWaylandShellVariant;
 
-typedef struct
-{
-  uint32_t fourcc;
-  uint32_t padding;
-  uint64_t modifier;
-} LinuxDmabufFormat;
-
 struct _GdkWaylandDisplay
 {
   GdkDisplay parent_instance;
@@ -103,9 +99,7 @@ struct _GdkWaylandDisplay
   struct wl_compositor *compositor;
   struct wl_shm *shm;
   struct zwp_linux_dmabuf_v1 *linux_dmabuf;
-  struct zwp_linux_dmabuf_feedback_v1 *linux_dmabuf_feedback;
-  gsize linux_dmabuf_n_formats;
-  LinuxDmabufFormat *linux_dmabuf_formats;
+  DmabufFormatsInfo *dmabuf_formats_info;
   struct xdg_wm_base *xdg_wm_base;
   struct zxdg_shell_v6 *zxdg_shell_v6;
   struct gtk_shell1 *gtk_shell;
@@ -125,6 +119,8 @@ struct _GdkWaylandDisplay
   struct xdg_activation_v1 *xdg_activation;
   struct wp_fractional_scale_manager_v1 *fractional_scale;
   struct wp_viewporter *viewporter;
+  struct wp_presentation *presentation;
+  struct wp_single_pixel_buffer_manager_v1 *single_pixel_buffer;
 
   GList *async_roundtrips;
 

gdk/wayland/gdkdmabuf-wayland-private.h

@@ -0,0 +1,77 @@
+/*
+ * gdkdmabuf-wayland.h
+ *
+ * Copyright 2023 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "config.h"
+
+#include <stdint.h>
+#include <wayland-client.h>
+#include <wayland-egl.h>
+
+#include <glib.h>
+#include <gdk/gdkkeys.h>
+#include <gdk/gdksurface.h>
+
+G_BEGIN_DECLS
+
+typedef struct
+{
+  uint32_t fourcc;
+  uint32_t padding;
+  uint64_t modifier;
+} DmabufFormat;
+
+typedef struct
+{
+  dev_t target_device;
+  guint32 flags;
+  gsize n_formats;
+  DmabufFormat *formats;
+} DmabufTranche;
+
+typedef struct
+{
+  dev_t main_device;
+  GPtrArray *tranches;
+} DmabufFormats;
+
+typedef struct DmabufFormatsInfo DmabufFormatsInfo;
+
+struct DmabufFormatsInfo
+{
+  GdkDisplay *display;
+  char *name;
+  struct zwp_linux_dmabuf_feedback_v1 *feedback;
+
+  gsize n_dmabuf_formats;
+  DmabufFormat *dmabuf_format_table;
+
+  DmabufFormats *dmabuf_formats;
+  DmabufFormats *pending_dmabuf_formats;
+  DmabufTranche *pending_tranche;
+};
+
+DmabufFormatsInfo * dmabuf_formats_info_new  (GdkDisplay                          *display,
+                                              const char                          *name,
+                                              struct zwp_linux_dmabuf_feedback_v1 *feedback);
+
+void                dmabuf_formats_info_free (DmabufFormatsInfo                   *info);
+
+G_END_DECLS

gdk/wayland/gdkdmabuf-wayland.c

@@ -0,0 +1,241 @@
+#include "config.h"
+
+#include "gdkdmabuf-wayland-private.h"
+
+#include "gdkdebugprivate.h"
+#include "gdkdmabufformatsprivate.h"
+#include "gdkdmabufformatsbuilderprivate.h"
+#include "gdkdmabufformatsprivate.h"
+
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/sysmacros.h>
+
+#include "linux-dmabuf-unstable-v1-client-protocol.h"
+
+
+static DmabufTranche *
+dmabuf_tranche_new (void)
+{
+  return g_new0 (DmabufTranche, 1);
+}
+
+static void
+dmabuf_tranche_free (DmabufTranche *tranche)
+{
+  g_free (tranche->formats);
+  g_free (tranche);
+}
+
+static DmabufFormats *
+dmabuf_formats_new (void)
+{
+  DmabufFormats *formats;
+
+  formats = g_new0 (DmabufFormats, 1);
+  formats->tranches = g_ptr_array_new_with_free_func ((GDestroyNotify) dmabuf_tranche_free);
+
+  return formats;
+}
+
+static void
+dmabuf_formats_free (DmabufFormats *formats)
+{
+  g_ptr_array_unref (formats->tranches);
+  g_free (formats);
+}
+
+static void
+update_dmabuf_formats (DmabufFormatsInfo *info)
+{
+  DmabufFormats *formats = info->dmabuf_formats;
+
+  GDK_DISPLAY_DEBUG (info->display, MISC,
+                     "dmabuf format table (%lu entries)", info->n_dmabuf_formats);
+  GDK_DISPLAY_DEBUG (info->display, MISC,
+                     "dmabuf main device: %u %u",
+                     major (formats->main_device),
+                     minor (formats->main_device));
+
+  for (gsize i = 0; i < formats->tranches->len; i++)
+    {
+      DmabufTranche *tranche = g_ptr_array_index (formats->tranches, i);
+
+      GDK_DISPLAY_DEBUG (info->display, MISC,
+                         "dmabuf tranche target device: %u %u",
+                         major (tranche->target_device),
+                         minor (tranche->target_device));
+
+      GDK_DISPLAY_DEBUG (info->display, MISC,
+                         "dmabuf%s tranche (%lu entries):",
+                         tranche->flags & ZWP_LINUX_DMABUF_FEEDBACK_V1_TRANCHE_FLAGS_SCANOUT ? " scanout" : "",
+                         tranche->n_formats);
+
+      for (gsize j = 0; j < tranche->n_formats; j++)
+        {
+          GDK_DISPLAY_DEBUG (info->display, MISC,
+                             "  %.4s:%#" G_GINT64_MODIFIER "x",
+                             (char *) &(tranche->formats[j].fourcc),
+                             tranche->formats[j].modifier);
+        }
+    }
+}
+
+static void
+linux_dmabuf_done (void *data,
+                   struct zwp_linux_dmabuf_feedback_v1 *feedback)
+{
+  DmabufFormatsInfo *info = data;
+
+  g_clear_pointer (&info->dmabuf_formats, dmabuf_formats_free);
+
+  info->dmabuf_formats = info->pending_dmabuf_formats;
+  info->pending_dmabuf_formats = NULL;
+
+  update_dmabuf_formats (info);
+}
+
+static void
+linux_dmabuf_format_table (void *data,
+                           struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                           int32_t fd,
+                           uint32_t size)
+{
+  DmabufFormatsInfo *info = data;
+
+  if (info->dmabuf_formats)
+    munmap (info->dmabuf_formats, sizeof (DmabufFormat) * info->n_dmabuf_formats);
+
+  info->n_dmabuf_formats = size / 16;
+  info->dmabuf_format_table = mmap (NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+}
+
+static void
+linux_dmabuf_main_device (void *data,
+                          struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                          struct wl_array *device)
+{
+  DmabufFormatsInfo *info = data;
+  dev_t dev;
+
+  memcpy (&dev, device->data, sizeof (dev_t));
+
+  g_assert (info->pending_dmabuf_formats == NULL);
+
+  info->pending_dmabuf_formats = dmabuf_formats_new ();
+  info->pending_dmabuf_formats->main_device = dev;
+}
+
+static void
+linux_dmabuf_tranche_done (void *data,
+                           struct zwp_linux_dmabuf_feedback_v1 *feedback)
+{
+  DmabufFormatsInfo *info = data;
+
+  g_ptr_array_add (info->pending_dmabuf_formats->tranches,
+                   info->pending_tranche);
+
+  info->pending_tranche = NULL;
+}
+
+static void
+linux_dmabuf_tranche_target_device (void *data,
+                                    struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                                    struct wl_array *device)
+{
+  DmabufFormatsInfo *info = data;
+  dev_t dev;
+  DmabufTranche *tranche;
+
+  memcpy (&dev, device->data, sizeof (dev_t));
+
+  g_assert (info->pending_tranche == NULL);
+
+  tranche = dmabuf_tranche_new ();
+  tranche->target_device = dev;
+
+  info->pending_tranche = tranche;
+}
+
+static void
+linux_dmabuf_tranche_formats (void *data,
+                              struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                              struct wl_array *indices)
+{
+  DmabufFormatsInfo *info = data;
+  DmabufTranche *tranche;
+  int i;
+  guint16 *pos;
+
+  g_assert (info->pending_tranche != NULL);
+  tranche = info->pending_tranche;
+
+  tranche->n_formats = indices->size / sizeof (guint16);
+  tranche->formats = g_new (DmabufFormat, tranche->n_formats);
+
+  i = 0;
+  wl_array_for_each (pos, indices)
+    {
+      tranche->formats[i++] = info->dmabuf_format_table[*pos];
+    }
+}
+
+static void
+linux_dmabuf_tranche_flags (void *data,
+                            struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                            uint32_t flags)
+{
+  DmabufFormatsInfo *info = data;
+  DmabufTranche *tranche;
+
+  g_assert (info->pending_tranche != NULL);
+  tranche = info->pending_tranche;
+  tranche->flags = flags;
+}
+
+static const struct zwp_linux_dmabuf_feedback_v1_listener feedback_listener = {
+  linux_dmabuf_done,
+  linux_dmabuf_format_table,
+  linux_dmabuf_main_device,
+  linux_dmabuf_tranche_done,
+  linux_dmabuf_tranche_target_device,
+  linux_dmabuf_tranche_formats,
+  linux_dmabuf_tranche_flags,
+};
+
+DmabufFormatsInfo *
+dmabuf_formats_info_new (GdkDisplay                          *display,
+                         const char                          *name,
+                         struct zwp_linux_dmabuf_feedback_v1 *feedback)
+{
+  DmabufFormatsInfo *info;
+
+  info = g_new0 (DmabufFormatsInfo, 1);
+
+  info->display = display;
+  info->name = g_strdup (name);
+  info->feedback = feedback;
+
+  if (info->feedback)
+    zwp_linux_dmabuf_feedback_v1_add_listener (info->feedback,
+                                               &feedback_listener, info);
+
+  return info;
+}
+
+void
+dmabuf_formats_info_free (DmabufFormatsInfo *info)
+{
+  g_free (info->name);
+  g_clear_pointer (&info->feedback, zwp_linux_dmabuf_feedback_v1_destroy);
+  if (info->dmabuf_format_table)
+    {
+      munmap (info->dmabuf_format_table, info->n_dmabuf_formats * 16);
+      info->dmabuf_format_table = NULL;
+    }
+  g_clear_pointer (&info->dmabuf_formats, dmabuf_formats_free);
+  g_clear_pointer (&info->pending_dmabuf_formats, dmabuf_formats_free);
+  g_clear_pointer (&info->pending_tranche, dmabuf_tranche_free);
+
+  g_free (info);
+}

gdk/wayland/gdkglcontext-wayland.c

@@ -88,14 +88,7 @@ gdk_wayland_gl_context_empty_frame (GdkDrawContext *draw_context)
 {
   GdkSurface *surface = gdk_draw_context_get_surface (draw_context);
 
-  if (gdk_wayland_surface_needs_commit (surface))
-    {
-      gdk_wayland_surface_sync (surface);
-      gdk_wayland_surface_request_frame (surface);
-
-      gdk_wayland_surface_commit (surface);
-      gdk_wayland_surface_notify_committed (surface);
-    }
+  gdk_wayland_surface_handle_empty_frame (surface);
 }
 
 static void

gdk/wayland/gdkprivate-wayland.h

@@ -34,6 +34,7 @@
 #include <gdk/wayland/gdkwayland.h>
 #include <gdk/wayland/gdkdisplay-wayland.h>
 #include <gdk/wayland/gdkseat-wayland.h>
+#include <gdk/wayland/gdkwaylandpresentationtime-private.h>
 
 #include <xkbcommon/xkbcommon.h>
 
@@ -115,13 +116,14 @@ void       gdk_wayland_display_system_bell (GdkDisplay *display,
 
 struct wl_buffer *_gdk_wayland_cursor_get_buffer (GdkWaylandDisplay *display,
                                                   GdkCursor         *cursor,
-                                                  guint              desired_scale,
+                                                  double             desired_scale,
+                                                  gboolean           use_viewporter,
                                                   guint              image_index,
                                                   int               *hotspot_x,
                                                   int               *hotspot_y,
                                                   int               *w,
                                                   int               *h,
-                                                  int               *scale);
+                                                  double            *scale);
 guint      _gdk_wayland_cursor_get_next_image_index (GdkWaylandDisplay *display,
                                                      GdkCursor         *cursor,
                                                      guint              scale,
@@ -129,7 +131,7 @@ guint      _gdk_wayland_cursor_get_next_image_index (GdkWaylandDisplay *display,
                                                      guint             *next_image_delay);
 
 void            gdk_wayland_surface_sync                   (GdkSurface           *surface);
-gboolean        gdk_wayland_surface_needs_commit           (GdkSurface           *surface);
+void            gdk_wayland_surface_handle_empty_frame     (GdkSurface           *surface);
 void            gdk_wayland_surface_commit                 (GdkSurface           *surface);
 void            gdk_wayland_surface_notify_committed       (GdkSurface           *surface);
 void            gdk_wayland_surface_request_frame          (GdkSurface           *surface);

gdk/wayland/gdkseat-wayland.c

@@ -781,8 +781,8 @@ pointer_handle_motion (void              *data,
     {
       double x, y;
       gdk_event_get_position (event, &x, &y);
-      g_message ("motion %f %f, seat %p state %d",
-                 x, y, seat, gdk_event_get_modifier_state (event));
+      gdk_debug_message ("motion %f %f, seat %p state %d",
+                         x, y, seat, gdk_event_get_modifier_state (event));
     }
 
   if (wl_seat_get_version (seat->wl_seat) < WL_POINTER_HAS_FRAME)
@@ -1640,6 +1640,7 @@ touch_handle_down (void              *data,
   touch->x = wl_fixed_to_double (x);
   touch->y = wl_fixed_to_double (y);
   touch->touch_down_serial = serial;
+  seat->latest_touch_down_serial = serial;
 
   event = gdk_touch_event_new (GDK_TOUCH_BEGIN,
                                GDK_SLOT_TO_EVENT_SEQUENCE (touch->id),
@@ -1663,7 +1664,7 @@ touch_handle_down (void              *data,
     {
       double xx, yy;
       gdk_event_get_position (event, &xx, &yy);
-      g_message ("touch begin %f %f", xx, yy);
+      gdk_debug_message ("touch begin %f %f", xx, yy);
     }
 
   _gdk_wayland_display_deliver_event (seat->display, event);
@@ -1698,7 +1699,7 @@ touch_handle_up (void            *data,
     {
       double x, y;
       gdk_event_get_position (event, &x, &y);
-      g_message ("touch end %f %f", x, y);
+      gdk_debug_message ("touch end %f %f", x, y);
     }
 
   _gdk_wayland_display_deliver_event (seat->display, event);
@@ -1746,7 +1747,7 @@ touch_handle_motion (void            *data,
     {
       double xx, yy;
       gdk_event_get_position (event, &xx, &yy);
-      g_message ("touch update %f %f", xx, yy);
+      gdk_debug_message ("touch update %f %f", xx, yy);
     }
 
   _gdk_wayland_display_deliver_event (seat->display, event);
@@ -1840,9 +1841,9 @@ emit_gesture_swipe_event (GdkWaylandSeat          *seat,
     {
       double x, y;
       gdk_event_get_position (event, &x, &y);
-      g_message ("swipe event %d, coords: %f %f, seat %p state %d",
-                 gdk_event_get_event_type (event), x, y, seat,
-                 gdk_event_get_modifier_state (event));
+      gdk_debug_message ("swipe event %d, coords: %f %f, seat %p state %d",
+                         gdk_event_get_event_type (event), x, y, seat,
+                         gdk_event_get_modifier_state (event));
     }
 
   _gdk_wayland_display_deliver_event (seat->display, event);
@@ -1935,10 +1936,10 @@ emit_gesture_pinch_event (GdkWaylandSeat          *seat,
     {
       double x, y;
       gdk_event_get_position (event, &x, &y);
-      g_message ("pinch event %d, coords: %f %f, seat %p state %d",
-                       gdk_event_get_event_type (event),
-                       x, y, seat,
-                       gdk_event_get_modifier_state (event));
+      gdk_debug_message ("pinch event %d, coords: %f %f, seat %p state %d",
+                         gdk_event_get_event_type (event),
+                         x, y, seat,
+                         gdk_event_get_modifier_state (event));
     }
 
   _gdk_wayland_display_deliver_event (seat->display, event);
@@ -2029,10 +2030,10 @@ emit_gesture_hold_event (GdkWaylandSeat          *seat,
     {
       double x, y;
       gdk_event_get_position (event, &x, &y);
-      g_message ("hold event %d, coords: %f %f, seat %p state %d",
-                 gdk_event_get_event_type (event),
-                 x, y, seat,
-                 gdk_event_get_modifier_state (event));
+      gdk_debug_message ("hold event %d, coords: %f %f, seat %p state %d",
+                         gdk_event_get_event_type (event),
+                         x, y, seat,
+                         gdk_event_get_modifier_state (event));
     }
 
   _gdk_wayland_display_deliver_event (seat->display, event);
@@ -3766,8 +3767,7 @@ pointer_surface_update_scale (GdkDevice *device)
   GdkWaylandDevice *wayland_device = GDK_WAYLAND_DEVICE (device);
   GdkWaylandPointerData *pointer =
     gdk_wayland_device_get_pointer (wayland_device);
-  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (seat->display);
-  guint32 scale;
+  double scale;
   GSList *l;
 
   if (wl_surface_get_version (pointer->pointer_surface) < WL_SURFACE_SET_BUFFER_SCALE_SINCE_VERSION)
@@ -3782,8 +3782,8 @@ pointer_surface_update_scale (GdkDevice *device)
   scale = 1;
   for (l = pointer->pointer_surface_outputs; l != NULL; l = l->next)
     {
-      guint32 output_scale = gdk_wayland_display_get_output_scale (display_wayland, l->data);
-      scale = MAX (scale, output_scale);
+      GdkMonitor *monitor = gdk_wayland_display_get_monitor_for_output (seat->display, l->data);
+      scale = MAX (scale, gdk_monitor_get_scale (monitor));
     }
 
   if (pointer->current_output_scale == scale)
@@ -3878,6 +3878,7 @@ gdk_wayland_pointer_data_finalize (GdkWaylandPointerData *pointer)
   g_clear_object (&pointer->cursor);
   wl_surface_destroy (pointer->pointer_surface);
   g_slist_free (pointer->pointer_surface_outputs);
+  g_clear_pointer (&pointer->pointer_surface_viewport, wp_viewport_destroy);
 }
 
 static void
@@ -4241,6 +4242,9 @@ init_pointer_data (GdkWaylandPointerData *pointer_data,
   wl_surface_add_listener (pointer_data->pointer_surface,
                            &pointer_surface_listener,
                            logical_device);
+
+  if (display_wayland->viewporter)
+    pointer_data->pointer_surface_viewport = wp_viewporter_get_viewport (display_wayland->viewporter, pointer_data->pointer_surface);
 }
 
 void
@@ -4390,15 +4394,24 @@ _gdk_wayland_seat_get_last_implicit_grab_serial (GdkWaylandSeat    *seat,
         serial = tablet->pointer_info.press_serial;
     }
 
-  while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &touch))
+  if (g_hash_table_size (seat->touches) > 0)
     {
-      if (touch->touch_down_serial > serial)
+      while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &touch))
         {
-          if (sequence)
-            *sequence = GDK_SLOT_TO_EVENT_SEQUENCE (touch->id);
-          serial = touch->touch_down_serial;
+          if (touch->touch_down_serial > serial)
+            {
+              if (sequence)
+                *sequence = GDK_SLOT_TO_EVENT_SEQUENCE (touch->id);
+              serial = touch->touch_down_serial;
+
+            }
         }
     }
+  else
+    {
+      if (seat->latest_touch_down_serial > serial)
+        serial = seat->latest_touch_down_serial;
+    }
 
   return serial;
 }

gdk/wayland/gdksubsurface-wayland-private.h

@@ -2,6 +2,7 @@
 
 #include "gdksubsurfaceprivate.h"
 
+#include "wayland-client-protocol.h"
 
 typedef struct _GdkWaylandSubsurface GdkWaylandSubsurface;
 typedef struct _GdkWaylandSubsurfaceClass GdkWaylandSubsurfaceClass;
@@ -23,10 +24,17 @@ struct _GdkWaylandSubsurface
   GdkTexture *texture;
   cairo_rectangle_int_t dest;
   graphene_rect_t source;
+  enum wl_output_transform transform;
 
   struct wl_region *opaque_region;
 
   struct wl_callback *frame_callback;
+
+  struct wl_surface *bg_surface;
+  struct wl_subsurface *bg_subsurface;
+  struct wp_viewport *bg_viewport;
+  cairo_rectangle_int_t bg_rect;
+  gboolean bg_attached;
 };
 
 struct _GdkWaylandSubsurfaceClass