4.14.2

gsk: Use hinted extents

Closes #6577 and #6568

See merge request GNOME/gtk!7086

.gitlab-ci/fedora.Dockerfile

@@ -2,8 +2,6 @@ FROM fedora:39
 
 RUN dnf -y install \
     adwaita-icon-theme \
-    atk-devel \
-    at-spi2-atk-devel \
     avahi-gobject-devel \
     cairo-devel \
     cairo-gobject-devel \
@@ -18,7 +16,6 @@ RUN dnf -y install \
     dejavu-sans-mono-fonts \
     desktop-file-utils \
     diffutils \
-    docbook-style-xsl \
     elfutils-libelf-devel \
     expat-devel \
     fribidi-devel \

.gitlab-ci/flatpak-build.sh

@@ -19,7 +19,6 @@ flatpak build ${builddir} meson \
                 --buildtype=debugoptimized \
                 -Dx11-backend=true \
                 -Dwayland-backend=true \
-                -Dvulkan=disabled \
                 -Dbuild-tests=false \
                 -Dbuild-testsuite=false \
                 -Dbuild-examples=false \

.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 \

NEWS

@@ -1,6 +1,94 @@
-Overview of Changes in 4.14.1, xx-xx-xxxx
+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
+=========================================
+
+* GtkTextView:
+ - Fix a mixup of cursor and anchor when retrieving surrounding text
+   in input methods
+
+* Printing:
+ - Avoid accessing freed printers
+
+* Accessibility:
+ - Fix memory leaks
+
+* GDK:
+ - Rename the GDK_VULKAN_SKIP environment variable to GDK_VULKAN_DISABLE
+ - Add a GDK_GL_DISABLE environment variable
+
+* GSK:
+ - Rename the GSK_GPU_SKIP environment variable to GSK_GPU_DISABLE
+ - Speed up handling of repeated ops, which should help for text
+ - Speed up the inner loop of text node conversion
+ - Drop the glyph-align optimization flag
+ - ngl: Avoid reusing frames while they are in use
+ - Fix flickering thumbnails in nautilus
+ - Speed up buffer handling in both ngl and Vulkan
+
+* Demos:
+ - Skip demos using gl shaders when we're not using the gl renderer
+
+* Build:
+ - Fix some ubsan warnings
+ - Avoid zink in ci since it spams stderr
+
+* Translation updates:
+ Czech
+ German
+ Korean
+ Russian
+
 
 Overview of Changes in 4.14.0, 12-03-2024
 =========================================

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

@@ -185,7 +185,6 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
                 "-Ddemo-profile=devel"
             ],

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

@@ -114,7 +114,6 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
                 "-Ddemo-profile=devel"
             ],

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

@@ -114,7 +114,6 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
                 "-Ddemo-profile=devel"
             ],
@@ -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

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

demos/gtk-demo/fishbowl.c

@@ -184,6 +184,12 @@ create_cogs (void)
   return picture;
 }
 
+static gboolean
+check_cogs (GtkFishbowl *fb)
+{
+  return GSK_IS_GL_RENDERER (gtk_native_get_renderer (gtk_widget_get_native (GTK_WIDGET (fb))));
+}
+
 static void
 mapped (GtkWidget *w)
 {
@@ -218,36 +224,41 @@ create_graph (void)
 
 static const struct {
   const char *name;
-  GtkWidget * (*create_func) (void);
+  GtkWidget * (* create_func) (void);
+  gboolean    (* check) (GtkFishbowl *fb);
 } widget_types[] = {
-  { "Icon",       create_icon           },
-  { "Button",     create_button         },
-  { "Blurbutton", create_blurred_button },
-  { "Fontbutton", create_font_button    },
-  { "Levelbar",   create_level_bar      },
-  { "Label",      create_label          },
-  { "Spinner",    create_spinner        },
-  { "Spinbutton", create_spinbutton     },
-  { "Video",      create_video          },
-  { "Gears",      create_gears          },
-  { "Switch",     create_switch         },
-  { "Menubutton", create_menu_button    },
-  { "Shader",     create_cogs           },
-  { "Tiger",      create_tiger          },
-  { "Graph",      create_graph          },
+  { "Icon",       create_icon,           NULL },
+  { "Button",     create_button,         NULL },
+  { "Blurbutton", create_blurred_button, NULL },
+  { "Fontbutton", create_font_button,    NULL },
+  { "Levelbar",   create_level_bar,      NULL },
+  { "Label",      create_label,          NULL },
+  { "Spinner",    create_spinner,        NULL },
+  { "Spinbutton", create_spinbutton,     NULL },
+  { "Video",      create_video,          NULL },
+  { "Gears",      create_gears,          NULL },
+  { "Switch",     create_switch,         NULL },
+  { "Menubutton", create_menu_button,    NULL },
+  { "Shader",     create_cogs,           check_cogs },
+  { "Tiger",      create_tiger,          NULL },
+  { "Graph",      create_graph,          NULL },
 };
 
 static int selected_widget_type = -1;
 static const int N_WIDGET_TYPES = G_N_ELEMENTS (widget_types);
 
-static void
+static gboolean
 set_widget_type (GtkFishbowl *fishbowl,
                  int          widget_type_index)
 {
   GtkWidget *window;
 
   if (widget_type_index == selected_widget_type)
-    return;
+    return TRUE;
+
+  if (widget_types[widget_type_index].check != NULL &&
+      !widget_types[widget_type_index].check (fishbowl))
+    return FALSE;
 
   selected_widget_type = widget_type_index;
 
@@ -257,6 +268,8 @@ set_widget_type (GtkFishbowl *fishbowl,
   window = GTK_WIDGET (gtk_widget_get_root (GTK_WIDGET (fishbowl)));
   gtk_window_set_title (GTK_WINDOW (window),
                         widget_types[selected_widget_type].name);
+
+  return TRUE;
 }
 
 G_MODULE_EXPORT void
@@ -264,14 +277,17 @@ fishbowl_next_button_clicked_cb (GtkButton *source,
                                  gpointer   user_data)
 {
   GtkFishbowl *fishbowl = user_data;
-  int new_index;
+  int new_index = selected_widget_type;
 
-  if (selected_widget_type + 1 >= N_WIDGET_TYPES)
-    new_index = 0;
-  else
-    new_index = selected_widget_type + 1;
+  do
+    {
+      if (new_index + 1 >= N_WIDGET_TYPES)
+        new_index = 0;
+      else
+        new_index = new_index + 1;
 
-  set_widget_type (fishbowl, new_index);
+    }
+  while (!set_widget_type (fishbowl, new_index));
 }
 
 G_MODULE_EXPORT void
@@ -279,14 +295,18 @@ fishbowl_prev_button_clicked_cb (GtkButton *source,
                                  gpointer   user_data)
 {
   GtkFishbowl *fishbowl = user_data;
-  int new_index;
+  int new_index = selected_widget_type;
 
-  if (selected_widget_type - 1 < 0)
-    new_index = N_WIDGET_TYPES - 1;
-  else
-    new_index = selected_widget_type - 1;
+  do
+    {
+      if (new_index - 1 < 0)
+        new_index = N_WIDGET_TYPES - 1;
+      else
+        new_index = new_index - 1;
 
-  set_widget_type (fishbowl, new_index);
+    }
+
+  while (!set_widget_type (fishbowl, new_index));
 }
 
 G_MODULE_EXPORT void

demos/gtk-demo/main.c

@@ -827,13 +827,25 @@ demo_search_changed_cb (GtkSearchEntry *entry,
   gtk_filter_changed (filter, GTK_FILTER_CHANGE_DIFFERENT);
 }
 
+static gboolean
+demo_can_run (GtkWidget  *window,
+              const char *name)
+{
+  if (name != NULL && strcmp (name, "gltransition") == 0)
+    return GSK_IS_GL_RENDERER (gtk_native_get_renderer (GTK_NATIVE (window)));
+
+  return TRUE;
+}
+
 static GListModel *
-create_demo_model (void)
+create_demo_model (GtkWidget *window)
 {
   GListStore *store = g_list_store_new (GTK_TYPE_DEMO);
   DemoData *demo = gtk_demos;
   GtkDemo *d;
 
+  gtk_widget_realize (window);
+
   d = GTK_DEMO (g_object_new (GTK_TYPE_DEMO, NULL));
   d->name = "main";
   d->title = "GTK Demo";
@@ -845,16 +857,20 @@ create_demo_model (void)
 
   while (demo->title)
     {
-      d = GTK_DEMO (g_object_new (GTK_TYPE_DEMO, NULL));
-      DemoData *children = demo->children;
+       DemoData *children = demo->children;
 
-      d->name = demo->name;
-      d->title = demo->title;
-      d->keywords = demo->keywords;
-      d->filename = demo->filename;
-      d->func = demo->func;
+      if (demo_can_run (window, demo->name))
+        {
+          d = GTK_DEMO (g_object_new (GTK_TYPE_DEMO, NULL));
 
-      g_list_store_append (store, d);
+          d->name = demo->name;
+          d->title = demo->title;
+          d->keywords = demo->keywords;
+          d->filename = demo->filename;
+          d->func = demo->func;
+
+          g_list_store_append (store, d);
+        }
 
       if (children)
         {
@@ -862,15 +878,19 @@ create_demo_model (void)
 
           while (children->title)
             {
-              GtkDemo *child = GTK_DEMO (g_object_new (GTK_TYPE_DEMO, NULL));
+              if (demo_can_run (window, children->name))
+                {
+                  GtkDemo *child = GTK_DEMO (g_object_new (GTK_TYPE_DEMO, NULL));
 
-              child->name = children->name;
-              child->title = children->title;
-              child->keywords = children->keywords;
-              child->filename = children->filename;
-              child->func = children->func;
+                  child->name = children->name;
+                  child->title = children->title;
+                  child->keywords = children->keywords;
+                  child->filename = children->filename;
+                  child->func = children->func;
+
+                  g_list_store_append (G_LIST_STORE (d->children_model), child);
+                }
 
-              g_list_store_append (G_LIST_STORE (d->children_model), child);
               children++;
             }
         }
@@ -936,7 +956,7 @@ activate (GApplication *app)
   search_bar = GTK_WIDGET (gtk_builder_get_object (builder, "searchbar"));
   g_signal_connect (search_bar, "notify::search-mode-enabled", G_CALLBACK (clear_search), NULL);
 
-  listmodel = create_demo_model ();
+  listmodel = create_demo_model (window);
   treemodel = gtk_tree_list_model_new (G_LIST_MODEL (listmodel),
                                        FALSE,
                                        TRUE,

demos/gtk-demo/menus.ui

@@ -2,7 +2,7 @@
 <interface>
   <menu id="menubar">
     <submenu>
-      <attribute name="label" translatable="yes">_Application</attribute>
+      <attribute name="label" translatable="yes">_File</attribute>
       <section>
         <item>
           <attribute name="label" translatable="yes">_New</attribute>
@@ -33,7 +33,7 @@
       </section>
     </submenu>
     <submenu>
-      <attribute name="label" translatable="yes">_File</attribute>
+      <attribute name="label" translatable="yes">_Preferences</attribute>
       <section>
         <item>
           <attribute name="label" translatable="yes">_Prefer Dark Theme</attribute>

demos/gtk-demo/path_maze.c

@@ -338,7 +338,7 @@ do_path_maze (GtkWidget *do_widget)
       GskPath *path;
 
       window = gtk_window_new ();
-      gtk_window_set_resizable (GTK_WINDOW (window), TRUE);
+      gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
       gtk_window_set_title (GTK_WINDOW (window), "Follow the maze with the mouse");
       g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
 

docs/reference/gtk/building.md

@@ -38,13 +38,13 @@ can run the build, using Ninja:
 
 ```
 cd builddir
-ninja
-ninja install
+meson compile
+meson install
 ```
 
 If you don't have permission to write to the directory you are
 installing in, you may have to change to root temporarily before
-running `ninja install`.
+running `meson install`.
 
 Several environment variables are useful to pass to set before
 running *meson*. `CPPFLAGS` contains options to pass to the C
@@ -112,10 +112,10 @@ responsible for controlling the debugging features of GTK with
 
 ## Dependencies
 
-Before you can compile the GTK widget toolkit, you need to have
-various other tools and libraries installed on your
-system. Dependencies of GTK have their own build systems, so
-you will need to refer to their own installation instructions.
+Before you can compile GTK, you need to have various other tools and
+libraries installed on your system. Dependencies of GTK have their own
+build systems, so you will need to refer to their own installation
+instructions.
 
 A particular important tool used by GTK to find its dependencies
 is `pkg-config`.
@@ -156,8 +156,8 @@ Other libraries are maintained separately.
   the development environment for these libraries that your
   operating system vendor provides.
 - The [fontconfig](https://www.freedesktop.org/wiki/Software/fontconfig/)
-  library provides Pango with a standard way of locating
-  fonts and matching them against font names.
+  library provides Pango with a standard way of locating fonts and matching
+  them against font names.
 - [Cairo](https://www.cairographics.org) is a graphics library that
   supports vector graphics and image compositing. Both Pango and GTK
   use Cairo for drawing. Note that we also need the auxiliary cairo-gobject
@@ -220,13 +220,12 @@ meson configure builddir
 
 ### `x11-backend`, `win32-backend`, `broadway-backend`, `wayland-backend` and `macos-backend`
 
-Enable specific backends for GDK.  If none of these options
-are given, the Wayland backend will be enabled by default,
-if the platform is Linux; the X11 backend will also be enabled
-by default, unless the platform is Windows, in which case the
-default is win32, or the platform is macOS, in which case the
-default is macOS. If any backend is explicitly enabled or disabled,
-no other platform will be enabled automatically.
+Enable specific backends for GDK.  If none of these options are given, the
+Wayland backend will be enabled by default, if the platform is Linux; the
+X11 backend will also be enabled by default, unless the platform is Windows,
+in which case the default is win32, or the platform is macOS, in which case
+the default is macOS. If any backend is explicitly enabled or disabled, no
+other platform will be enabled automatically.
 
 ### `vulkan`
 

docs/reference/gtk/css-overview.md

@@ -1,7 +1,7 @@
 Title: CSS in GTK
 Slug: css
 
-This chapter describes how GTK uses CSS for styling and layout. 
+This chapter describes how GTK uses CSS for styling and layout.
 It is not meant to be an explanation of CSS from first principles,
 but focuses on listing supported CSS features and differences
 between Web CSS and GTK.

docs/reference/gtk/overview.md

@@ -28,6 +28,9 @@ GTK depends on the following libraries:
  - **OpenGL**: OpenGL is the premier environment for developing portable,
    interactive 2D and 3D graphics applications. More information available
    on the [Khronos website][opengl].
+ - **Vulkan**: Vulkan is the a newer graphics API, that can be considered
+   the successor of OpenGL.  More information available on the
+   [Khronos website][vulkan].
  - **Pango**: Pango is a library for internationalized text handling. It
    centers around the `PangoLayout` object, representing a paragraph of
    text.  Pango provides the engine for `GtkTextView`, `GtkLabel`,
@@ -60,6 +63,7 @@ GTK is divided into three parts:
 [gio]: https://developer.gnome.org/gio/stable/
 [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/
 [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

@@ -278,14 +278,11 @@ are only available when GTK has been configured with `-Ddebug=true`.
 : OpenGL renderer information
 
 `vulkan`
-: Vulkan renderer information
+: Check Vulkan errors
 
 `shaders`
 : Information about shaders
 
-`surface`
-: Information about surfaces
-
 `fallback`
 : Information about fallback usage in renderers
 
@@ -303,9 +300,6 @@ A number of options affect behavior instead of logging:
 `full-redraw`
 : Force full redraws
 
-`sync`
-: Sync after each frame
-
 `staging`
 : Use a staging image for texture upload (Vulkan only)
 
@@ -347,6 +341,28 @@ a `*`, which means: try all remaining backends. The special value
 backends. For more information about selecting backends,
 see the [func@Gdk.DisplayManager.get] function.
 
+### `GDK_GL_DISABLE`
+
+This variable can be set to a list of values, which cause GDK to
+disable extension features of the OpenGL support.
+Note that these features may already be disabled if the GL driver
+does not support them.
+
+`debug`
+: GL_KHR_debug
+
+`unpack-subimage`
+:GL_EXT_unpack_subimage
+
+`half-float`
+:GL_OES_vertex_half_float
+
+`sync`
+:GL_ARB_sync
+
+`base-instance`
+:GL_EXT_base_instance
+
 ### `GDK_VULKAN_DEVICE`
 
 This variable can be set to the index of a Vulkan device to override
@@ -354,7 +370,7 @@ the default selection of the device that is used for Vulkan rendering.
 The special value `list` can be used to obtain a list of all Vulkan
 devices.
 
-### `GDK_VULKAN_SKIP`
+### `GDK_VULKAN_DISABLE`
 
 This variable can be set to a list of values, which cause GDK to
 disable features of the Vulkan support.
@@ -434,7 +450,7 @@ using and the GDK backend supports them:
     installation.
 
 
-### `GSK_GPU_SKIP`
+### `GSK_GPU_DISABLE`
 
 This variable can be set to a list of values, which cause GSK to
 disable certain optimizations of the "ngl" and "vulkan" renderer.
@@ -454,9 +470,6 @@ disable certain optimizations of the "ngl" and "vulkan" renderer.
 `mipmap`
 : Avoid creating mipmaps
 
-`gl-baseinstance`
-: Assume no ARB/EXT_base_instance support
-
 The special value `all` can be used to turn on all values. The special
 value `help` can be used to obtain a list of all supported values.
 
@@ -469,10 +482,10 @@ n seconds. The default timeout is 15 seconds.
 
 ### `GSK_MAX_TEXTURE_SIZE`
 
-Limit texture size to the minimum of this value and the OpenGL limit
-for texture sizes. This can be used to debug issues with texture slicing
-on systems where the OpenGL texture size limit would otherwise make
-texture slicing difficult to test.
+Limit texture size to the minimum of this value and the OpenGL limit for
+texture sizes in the "gl" renderer. This can be used to debug issues with
+texture slicing on systems where the OpenGL texture size limit would
+otherwise make texture slicing difficult to test.
 
 ### `GTK_CSD`
 

gdk/gdkdisplay.c

@@ -1538,6 +1538,7 @@ describe_egl_config (EGLDisplay egl_display,
                      EGLConfig  egl_config)
 {
   EGLint red, green, blue, alpha, type;
+  EGLint depth, stencil;
 
   if (egl_config == NULL)
     return g_strdup ("-");
@@ -1556,7 +1557,16 @@ describe_egl_config (EGLDisplay egl_display,
   else
     type = EGL_COLOR_COMPONENT_TYPE_FIXED_EXT;
 
-  return g_strdup_printf ("R%dG%dB%dA%d%s", red, green, blue, alpha, type == EGL_COLOR_COMPONENT_TYPE_FIXED_EXT ? "" : " float");
+  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, depth %d, stencil %d", red, green, blue, alpha,
+                          type == EGL_COLOR_COMPONENT_TYPE_FIXED_EXT ? "" : " float",
+                          depth,
+                          stencil);
 }
 
 gpointer

gdk/gdkdrag.c

@@ -50,18 +50,6 @@
 #include "gdkenumtypes.h"
 #include "gdkeventsprivate.h"
 
-static struct {
-  GdkDragAction action;
-  const char   *name;
-  GdkCursor    *cursor;
-} drag_cursors[] = {
-  { GDK_ACTION_ASK,     "dnd-ask",  NULL },
-  { GDK_ACTION_COPY,    "copy", NULL },
-  { GDK_ACTION_MOVE,    "move", NULL },
-  { GDK_ACTION_LINK,    "alias", NULL },
-  { 0,                  "no-drop", NULL },
-};
-
 enum {
   PROP_0,
   PROP_CONTENT,
@@ -786,6 +774,20 @@ gdk_drag_handle_source_event (GdkEvent *event)
   return FALSE;
 }
 
+static struct {
+  GdkDragAction action;
+  const char   *name;
+  GdkCursor    *cursor;
+} drag_cursors[] = {
+  { 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_drag_get_cursor (GdkDrag       *drag,
                      GdkDragAction  action)

gdk/gdkgl.c

@@ -125,7 +125,7 @@ gdk_cairo_draw_from_gl (cairo_t              *cr,
    * the GL_UNPACK_ROW_LENGTH support
    */
   if (gdk_gl_context_get_use_es (paint_context) &&
-      !(version >= 300 || gdk_gl_context_has_unpack_subimage (paint_context)))
+      !(version >= 300 || gdk_gl_context_has_feature (paint_context, GDK_GL_FEATURE_UNPACK_SUBIMAGE)))
     return;
 
   /* TODO: avoid reading back non-required data due to dest clip */

gdk/gdkglcontext.c

@@ -103,6 +103,15 @@
 
 #define DEFAULT_ALLOWED_APIS GDK_GL_API_GL | GDK_GL_API_GLES
 
+static const GdkDebugKey gdk_gl_feature_keys[] = {
+  { "debug", GDK_GL_FEATURE_DEBUG, "GL_KHR_debug" },
+  { "unpack-subimage", GDK_GL_FEATURE_UNPACK_SUBIMAGE, "GL_EXT_unpack_subimage" },
+  { "half-float", GDK_GL_FEATURE_VERTEX_HALF_FLOAT, "GL_OES_vertex_half_float" },
+  { "sync", GDK_GL_FEATURE_SYNC, "GL_ARB_sync" },
+  { "base-instance", GDK_GL_FEATURE_BASE_INSTANCE, "GL_ARB_base_instance" },
+  { "buffer-storage", GDK_GL_FEATURE_BUFFER_STORAGE, "GL_EXT_buffer_storage" },
+};
+
 typedef struct _GdkGLContextPrivate GdkGLContextPrivate;
 
 struct _GdkGLContextPrivate
@@ -112,13 +121,9 @@ struct _GdkGLContextPrivate
 
   GdkGLMemoryFlags memory_flags[GDK_MEMORY_N_FORMATS];
 
-  guint has_khr_debug : 1;
+  GdkGLFeatures features;
   guint use_khr_debug : 1;
-  guint has_half_float : 1;
-  guint has_sync : 1;
-  guint has_unpack_subimage : 1;
   guint has_debug_output : 1;
-  guint has_bgra : 1;
   guint extensions_checked : 1;
   guint debug_enabled : 1;
   guint forward_compatible : 1;
@@ -290,7 +295,7 @@ gdk_gl_context_create_egl_context (GdkGLContext *context,
   GdkDisplay *display = gdk_gl_context_get_display (context);
   EGLDisplay egl_display = gdk_display_get_egl_display (display);
   GdkGLContext *share = gdk_display_get_gl_context (display);
-  GdkGLContextPrivate *share_priv = gdk_gl_context_get_instance_private (share);
+  GdkGLContextPrivate *share_priv = share ? gdk_gl_context_get_instance_private (share) : NULL;
   EGLConfig egl_config;
   EGLContext ctx;
   EGLint context_attribs[N_EGL_ATTRS], i = 0, flags = 0;
@@ -898,11 +903,12 @@ gdk_gl_context_label_object_printf  (GdkGLContext *context,
 
 
 gboolean
-gdk_gl_context_has_unpack_subimage (GdkGLContext *context)
+gdk_gl_context_has_feature (GdkGLContext  *self,
+                            GdkGLFeatures  feature)
 {
-  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
 
-  return priv->has_unpack_subimage;
+  return (priv->features & feature) == feature;
 }
 
 static gboolean
@@ -1664,10 +1670,53 @@ gdk_gl_version_init_epoxy (GdkGLVersion *version)
   *version = GDK_GL_VERSION_INIT (epoxy_version / 10, epoxy_version % 10);
 }
 
+static GdkGLFeatures
+gdk_gl_context_check_features (GdkGLContext *context)
+{
+  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+  GdkGLFeatures features = 0;
+
+  if (gdk_gl_context_get_use_es (context))
+    {
+      if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)) ||
+          epoxy_has_gl_extension ("GL_EXT_unpack_subimage"))
+        features |= GDK_GL_FEATURE_UNPACK_SUBIMAGE;
+    }
+  else
+    {
+      features |= GDK_GL_FEATURE_UNPACK_SUBIMAGE;
+    }
+
+  if (epoxy_has_gl_extension ("GL_KHR_debug"))
+    features |= GDK_GL_FEATURE_DEBUG;
+
+  if (gdk_gl_context_check_version (context, "3.0", "3.0") ||
+      epoxy_has_gl_extension ("GL_OES_vertex_half_float"))
+    features |= GDK_GL_FEATURE_VERTEX_HALF_FLOAT;
+
+  if (gdk_gl_context_check_version (context, "3.2", "3.0") ||
+      epoxy_has_gl_extension ("GL_ARB_sync") ||
+      epoxy_has_gl_extension ("GL_APPLE_sync"))
+    features |= GDK_GL_FEATURE_SYNC;
+
+  if (gdk_gl_context_check_version (context, "4.2", "9.9") ||
+      epoxy_has_gl_extension ("GL_EXT_base_instance") ||
+      epoxy_has_gl_extension ("GL_ARB_base_instance"))
+    features |= GDK_GL_FEATURE_BASE_INSTANCE;
+
+  if (gdk_gl_context_check_version (context, "4.4", "9.9") ||
+      epoxy_has_gl_extension ("GL_EXT_buffer_storage") ||
+      epoxy_has_gl_extension ("GL_ARB_buffer_storage"))
+    features |= GDK_GL_FEATURE_BUFFER_STORAGE;
+
+  return features;
+}
+
 static void
 gdk_gl_context_check_extensions (GdkGLContext *context)
 {
   GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
+  GdkGLFeatures supported_features, disabled_features;
   gboolean gl_debug = FALSE;
   GdkDisplay *display;
 
@@ -1685,69 +1734,54 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
 
   if (priv->has_debug_output && gl_debug)
     {
-      gdk_gl_context_make_current (context);
       glEnable (GL_DEBUG_OUTPUT);
       glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS);
       glDebugMessageCallback (gl_debug_message_callback, NULL);
     }
 
-  if (gdk_gl_context_get_use_es (context))
-    {
-      priv->has_unpack_subimage = gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)) ||
-                                  epoxy_has_gl_extension ("GL_EXT_unpack_subimage");
-      priv->has_khr_debug = epoxy_has_gl_extension ("GL_KHR_debug");
-      priv->has_bgra = epoxy_has_gl_extension ("GL_EXT_texture_format_BGRA8888");
-    }
-  else
-    {
-      priv->has_unpack_subimage = TRUE;
-      priv->has_khr_debug = epoxy_has_gl_extension ("GL_KHR_debug");
-      priv->has_bgra = TRUE;
+  /* If we asked for a core profile, but didn't get one, we're in legacy mode */
+  if (!gdk_gl_context_get_use_es (context) &&
+      !gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 2)))
+    priv->is_legacy = TRUE;
 
-      /* We asked for a core profile, but we didn't get one, so we're in legacy mode */
-      if (!gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 2)))
-        priv->is_legacy = TRUE;
-    }
+  supported_features = gdk_gl_context_check_features (context);
+  disabled_features = gdk_parse_debug_var ("GDK_GL_DISABLE",
+                                           gdk_gl_feature_keys,
+                                           G_N_ELEMENTS (gdk_gl_feature_keys));
 
-  if (priv->has_khr_debug && gl_debug)
+  priv->features = supported_features & ~disabled_features;
+
+  gdk_gl_context_init_memory_flags (context);
+
+  if ((priv->features & GDK_GL_FEATURE_DEBUG) && gl_debug)
     {
       priv->use_khr_debug = TRUE;
       glGetIntegerv (GL_MAX_LABEL_LENGTH, &priv->max_debug_label_length);
     }
 
-  priv->has_half_float = gdk_gl_context_check_version (context, "3.0", "3.0") ||
-                         epoxy_has_gl_extension ("GL_OES_vertex_half_float");
-
-  priv->has_sync = gdk_gl_context_check_version (context, "3.2", "3.0") ||
-                   epoxy_has_gl_extension ("GL_ARB_sync") ||
-                   epoxy_has_gl_extension ("GL_APPLE_sync");
-
-  gdk_gl_context_init_memory_flags (context);
-
-  {
-    int max_texture_size;
-    glGetIntegerv (GL_MAX_TEXTURE_SIZE, &max_texture_size);
-    GDK_DISPLAY_DEBUG (gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context)), OPENGL,
-                       "%s version: %d.%d (%s)\n"
-                       "* GLSL version: %s\n"
-                       "* Max texture size: %d\n"
-                       "* Extensions checked:\n"
-                       " - GL_KHR_debug: %s\n"
-                       " - GL_EXT_unpack_subimage: %s\n"
-                       " - half float: %s\n"
-                       " - sync: %s\n"
-                       " - bgra: %s",
-                       gdk_gl_context_get_use_es (context) ? "OpenGL ES" : "OpenGL",
-                       gdk_gl_version_get_major (&priv->gl_version), gdk_gl_version_get_minor (&priv->gl_version),
-                       priv->is_legacy ? "legacy" : "core",
-                       glGetString (GL_SHADING_LANGUAGE_VERSION),
-                       max_texture_size,
-                       priv->has_khr_debug ? "yes" : "no",
-                       priv->has_unpack_subimage ? "yes" : "no",
-                       priv->has_half_float ? "yes" : "no",
-                       priv->has_sync ? "yes" : "no",
-                       priv->has_bgra ? "yes" : "no");
-  }
+  if (GDK_DISPLAY_DEBUG_CHECK (display, OPENGL))
+    {
+      int i, max_texture_size;
+      glGetIntegerv (GL_MAX_TEXTURE_SIZE, &max_texture_size);
+      gdk_debug_message ("%s version: %d.%d (%s)\n"
+                         "* GLSL version: %s\n"
+                         "* Max texture size: %d\n",
+                         gdk_gl_context_get_use_es (context) ? "OpenGL ES" : "OpenGL",
+                         gdk_gl_version_get_major (&priv->gl_version), gdk_gl_version_get_minor (&priv->gl_version),
+                         priv->is_legacy ? "legacy" : "core",
+                         glGetString (GL_SHADING_LANGUAGE_VERSION),
+                         max_texture_size);
+      gdk_debug_message ("Enabled features (use GDK_GL_DISABLE env var to disable):");
+      for (i = 0; i < G_N_ELEMENTS (gdk_gl_feature_keys); i++)
+        {
+          gdk_debug_message ("    %s: %s",
+                             gdk_gl_feature_keys[i].key,
+                             (priv->features & gdk_gl_feature_keys[i].value) ? "YES" :
+                             ((disabled_features & gdk_gl_feature_keys[i].value) ? "disabled via env var" :
+                             (((supported_features & gdk_gl_feature_keys[i].value) == 0) ? "not supported" :
+                             "Hum, what? This should not happen.")));
+        }
+    }
 
   priv->extensions_checked = TRUE;
 }
@@ -2016,30 +2050,6 @@ gdk_gl_context_get_format_flags (GdkGLContext    *self,
   return priv->memory_flags[format];
 }
 
-gboolean
-gdk_gl_context_has_debug (GdkGLContext *self)
-{
-  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
-
-  return priv->debug_enabled || priv->use_khr_debug;
-}
-
-gboolean
-gdk_gl_context_has_vertex_half_float (GdkGLContext *self)
-{
-  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
-
-  return priv->has_half_float;
-}
-
-gboolean
-gdk_gl_context_has_sync (GdkGLContext *self)
-{
-  GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
-
-  return priv->has_sync;
-}
-
 /* Return if glGenVertexArrays, glBindVertexArray and glDeleteVertexArrays
  * can be used
  */

gdk/gdkglcontextprivate.h

@@ -27,6 +27,15 @@
 
 G_BEGIN_DECLS
 
+typedef enum {
+  GDK_GL_FEATURE_DEBUG                      = 1 << 0,
+  GDK_GL_FEATURE_UNPACK_SUBIMAGE            = 1 << 1,
+  GDK_GL_FEATURE_VERTEX_HALF_FLOAT          = 1 << 2,
+  GDK_GL_FEATURE_SYNC                       = 1 << 3,
+  GDK_GL_FEATURE_BASE_INSTANCE              = 1 << 4,
+  GDK_GL_FEATURE_BUFFER_STORAGE             = 1 << 5,
+} GdkGLFeatures;
+
 typedef enum {
   GDK_GL_NONE = 0,
   GDK_GL_EGL,
@@ -142,7 +151,6 @@ void                    gdk_gl_context_get_matching_version     (GdkGLContext
                                                                  gboolean                legacy,
                                                                  GdkGLVersion           *out_version);
 
-gboolean                gdk_gl_context_has_unpack_subimage      (GdkGLContext    *context);
 void                    gdk_gl_context_push_debug_group         (GdkGLContext    *context,
                                                                  const char      *message);
 void                    gdk_gl_context_push_debug_group_printf  (GdkGLContext    *context,
@@ -163,14 +171,11 @@ const char *            gdk_gl_context_get_glsl_version_string  (GdkGLContext
 
 GdkGLMemoryFlags        gdk_gl_context_get_format_flags         (GdkGLContext    *self,
                                                                  GdkMemoryFormat  format) G_GNUC_PURE;
-gboolean                gdk_gl_context_has_debug                (GdkGLContext    *self) G_GNUC_PURE;
+gboolean                gdk_gl_context_has_feature              (GdkGLContext    *self,
+                                                                 GdkGLFeatures    feature) G_GNUC_PURE;
 
 gboolean                gdk_gl_context_use_es_bgra              (GdkGLContext    *context);
 
-gboolean                gdk_gl_context_has_vertex_half_float    (GdkGLContext    *self) G_GNUC_PURE;
-
-gboolean                gdk_gl_context_has_sync                 (GdkGLContext    *self) G_GNUC_PURE;
-
 gboolean                gdk_gl_context_has_vertex_arrays        (GdkGLContext    *self) G_GNUC_PURE;
 
 double                  gdk_gl_context_get_scale                (GdkGLContext    *self);

gdk/gdkgltexture.c

@@ -494,7 +494,7 @@ gdk_gl_texture_new_from_builder (GdkGLTextureBuilder *builder,
   self->id = gdk_gl_texture_builder_get_id (builder);
   GDK_TEXTURE (self)->format = gdk_gl_texture_builder_get_format (builder);
   self->has_mipmap = gdk_gl_texture_builder_get_has_mipmap (builder);
-  if (gdk_gl_context_has_sync (self->context))
+  if (gdk_gl_context_has_feature (self->context, GDK_GL_FEATURE_SYNC))
     self->sync = gdk_gl_texture_builder_get_sync (builder);
   self->destroy = destroy;
   self->data = data;

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/gdkvulkancontext.c

@@ -552,9 +552,8 @@ physical_device_supports_extension (VkPhysicalDevice  device,
   return FALSE;
 }
 
-static gboolean
-physical_device_check_features (VkPhysicalDevice   device,
-                                GdkVulkanFeatures *out_features)
+static GdkVulkanFeatures
+physical_device_check_features (VkPhysicalDevice device)
 {
   VkPhysicalDeviceVulkan12Features v12_features = {
       .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VULKAN_1_2_FEATURES,
@@ -563,15 +562,16 @@ physical_device_check_features (VkPhysicalDevice   device,
       .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_YCBCR_CONVERSION_FEATURES,
       .pNext = &v12_features
   };
-  VkPhysicalDeviceFeatures2 features = {
+  VkPhysicalDeviceFeatures2 v10_features = {
       .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2,
       .pNext = &ycbcr_features
   };
   VkExternalSemaphoreProperties semaphore_props = {
       .sType = VK_STRUCTURE_TYPE_EXTERNAL_SEMAPHORE_PROPERTIES,
   };
+  GdkVulkanFeatures features;
 
-  vkGetPhysicalDeviceFeatures2 (device, &features);
+  vkGetPhysicalDeviceFeatures2 (device, &v10_features);
   vkGetPhysicalDeviceExternalSemaphoreProperties (device,
                                                   &(VkPhysicalDeviceExternalSemaphoreInfo) {
 		                                      .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTERNAL_SEMAPHORE_INFO,
@@ -579,46 +579,46 @@ physical_device_check_features (VkPhysicalDevice   device,
 	                                          },
                                                   &semaphore_props);
 
-  *out_features = 0;
+  features = 0;
 
-  if (features.features.shaderUniformBufferArrayDynamicIndexing &&
-      features.features.shaderSampledImageArrayDynamicIndexing)
-    *out_features |= GDK_VULKAN_FEATURE_DYNAMIC_INDEXING;
+  if (v10_features.features.shaderUniformBufferArrayDynamicIndexing &&
+      v10_features.features.shaderSampledImageArrayDynamicIndexing)
+    features |= GDK_VULKAN_FEATURE_DYNAMIC_INDEXING;
 
   if (v12_features.descriptorIndexing &&
       v12_features.descriptorBindingPartiallyBound &&
       v12_features.descriptorBindingVariableDescriptorCount &&
       v12_features.descriptorBindingSampledImageUpdateAfterBind &&
       v12_features.descriptorBindingStorageBufferUpdateAfterBind)
-    *out_features |= GDK_VULKAN_FEATURE_DESCRIPTOR_INDEXING;
+    features |= GDK_VULKAN_FEATURE_DESCRIPTOR_INDEXING;
   else if (physical_device_supports_extension (device, VK_EXT_DESCRIPTOR_INDEXING_EXTENSION_NAME))
-    *out_features |= GDK_VULKAN_FEATURE_DESCRIPTOR_INDEXING;
+    features |= GDK_VULKAN_FEATURE_DESCRIPTOR_INDEXING;
 
   if (v12_features.shaderSampledImageArrayNonUniformIndexing &&
       v12_features.shaderStorageBufferArrayNonUniformIndexing)
-    *out_features |= GDK_VULKAN_FEATURE_NONUNIFORM_INDEXING;
+    features |= GDK_VULKAN_FEATURE_NONUNIFORM_INDEXING;
 
   if (ycbcr_features.samplerYcbcrConversion ||
       physical_device_supports_extension (device, VK_KHR_SAMPLER_YCBCR_CONVERSION_EXTENSION_NAME))
-    *out_features |= GDK_VULKAN_FEATURE_YCBCR;
+    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))
-    *out_features |= GDK_VULKAN_FEATURE_DMABUF;
+    features |= GDK_VULKAN_FEATURE_DMABUF;
 
   if (physical_device_supports_extension (device, VK_KHR_EXTERNAL_SEMAPHORE_FD_EXTENSION_NAME))
     {
       if (semaphore_props.externalSemaphoreFeatures & VK_EXTERNAL_SEMAPHORE_FEATURE_EXPORTABLE_BIT)
-        *out_features |= GDK_VULKAN_FEATURE_SEMAPHORE_EXPORT;
+        features |= GDK_VULKAN_FEATURE_SEMAPHORE_EXPORT;
 
       if (semaphore_props.externalSemaphoreFeatures & VK_EXTERNAL_SEMAPHORE_FEATURE_IMPORTABLE_BIT)
-        *out_features |= GDK_VULKAN_FEATURE_SEMAPHORE_IMPORT;
+        features |= GDK_VULKAN_FEATURE_SEMAPHORE_IMPORT;
     }
 
   if (physical_device_supports_extension (device, VK_KHR_INCREMENTAL_PRESENT_EXTENSION_NAME))
-    *out_features |= GDK_VULKAN_FEATURE_INCREMENTAL_PRESENT;
+    features |= GDK_VULKAN_FEATURE_INCREMENTAL_PRESENT;
 
-  return TRUE;
+  return features;
 }
 
 static void
@@ -1366,7 +1366,7 @@ gdk_display_create_vulkan_device (GdkDisplay  *display,
   first = 0;
   last = n_devices;
 
-  skip_features = gdk_parse_debug_var ("GDK_VULKAN_SKIP",
+  skip_features = gdk_parse_debug_var ("GDK_VULKAN_DISABLE",
                                        gsk_vulkan_feature_keys,
                                        G_N_ELEMENTS (gsk_vulkan_feature_keys));
 
@@ -1454,8 +1454,7 @@ gdk_display_create_vulkan_device (GdkDisplay  *display,
       GdkVulkanFeatures features, device_features;
       uint32_t n_queue_props;
 
-      if (!physical_device_check_features (devices[i], &device_features))
-        continue;
+      device_features = physical_device_check_features (devices[i]);
 
       features = device_features & ~skip_features;
 
@@ -1540,7 +1539,7 @@ gdk_display_create_vulkan_device (GdkDisplay  *display,
               display->vk_queue_family_index = j;
               display->vulkan_features = features;
 
-              GDK_DISPLAY_DEBUG (display, VULKAN, "Enabled features (use GDK_VULKAN_SKIP env var to disable):");
+              GDK_DISPLAY_DEBUG (display, VULKAN, "Enabled features (use GDK_VULKAN_DISABLE env var to disable):");
               for (i = 0; i < G_N_ELEMENTS (gsk_vulkan_feature_keys); i++)
                 {
                   GDK_DISPLAY_DEBUG (display, VULKAN, "    %s: %s",

gdk/macos/GdkMacosWindow.c

@@ -296,10 +296,6 @@ typedef NSString *CALayerContentsGravity;
   GdkMonitor *monitor;
   GdkRectangle geometry;
   GdkRectangle workarea;
-  int shadow_top = 0;
-  int shadow_left = 0;
-  int shadow_right = 0;
-  int shadow_bottom = 0;
   GdkRectangle window_gdk;
   GdkPoint pointer_position;
   GdkPoint new_origin;
@@ -307,13 +303,6 @@ typedef NSString *CALayerContentsGravity;
   if (!inManualMove)
     return NO;
 
-  /* Get our shadow so we can adjust the window position sans-shadow */
-  _gdk_macos_surface_get_shadow (gdk_surface,
-                                 &shadow_top,
-                                 &shadow_right,
-                                 &shadow_bottom,
-                                 &shadow_left);
-
   windowFrame = [self frame];
   currentLocation = [NSEvent mouseLocation];
 
@@ -339,21 +328,9 @@ typedef NSString *CALayerContentsGravity;
   window_gdk.width = windowFrame.size.width;
   window_gdk.height = windowFrame.size.height;
 
-  /* Subtract our shadowin from the window */
-  window_gdk.x += shadow_left;
-  window_gdk.y += shadow_top;
-  window_gdk.width = window_gdk.width - shadow_left - shadow_right;
-  window_gdk.height = window_gdk.height - shadow_top - shadow_bottom;
-
   /* Now place things on the monitor */
   _edge_snapping_motion (&self->snapping, &pointer_position, &window_gdk);
 
-  /* And add our shadow back to the frame */
-  window_gdk.x -= shadow_left;
-  window_gdk.y -= shadow_top;
-  window_gdk.width += shadow_left + shadow_right;
-  window_gdk.height += shadow_top + shadow_bottom;
-
   /* Convert to quartz coordinates */
   _gdk_macos_display_to_display_coords ([self gdkDisplay],
                                         window_gdk.x,
@@ -715,26 +692,16 @@ typedef NSString *CALayerContentsGravity;
 
 -(void)setStyleMask:(NSWindowStyleMask)styleMask
 {
-  gboolean was_fullscreen;
-  gboolean is_fullscreen;
   gboolean was_opaque;
   gboolean is_opaque;
 
-  was_fullscreen = (([self styleMask] & NSWindowStyleMaskFullScreen) != 0);
   was_opaque = (([self styleMask] & NSWindowStyleMaskTitled) != 0);
 
   [super setStyleMask:styleMask];
 
-  is_fullscreen = (([self styleMask] & NSWindowStyleMaskFullScreen) != 0);
   is_opaque = (([self styleMask] & NSWindowStyleMaskTitled) != 0);
 
-  if (was_fullscreen != is_fullscreen)
-    {
-      if (was_fullscreen)
-        [self setFrame:lastUnfullscreenFrame display:NO];
-
-      _gdk_macos_surface_update_fullscreen_state (gdk_surface);
-    }
+  _gdk_macos_surface_update_fullscreen_state (gdk_surface);
 
   if (was_opaque != is_opaque)
     {
@@ -747,17 +714,11 @@ typedef NSString *CALayerContentsGravity;
 
 -(NSRect)constrainFrameRect:(NSRect)frameRect toScreen:(NSScreen *)screen
 {
-  GdkMacosSurface *surface = gdk_surface;
   NSRect rect;
-  int shadow_top;
 
-  /* Allow the window to move up "shadow_top" more than normally allowed
-   * by the default impl. This makes it possible to move windows with
-   * client side shadow right up to the screen's menu bar. */
-  _gdk_macos_surface_get_shadow (surface, &shadow_top, NULL, NULL, NULL);
   rect = [super constrainFrameRect:frameRect toScreen:screen];
   if (frameRect.origin.y > rect.origin.y)
-    rect.origin.y = MIN (frameRect.origin.y, rect.origin.y + shadow_top);
+    rect.origin.y = MIN (frameRect.origin.y, rect.origin.y);
 
   return rect;
 }
@@ -777,7 +738,6 @@ typedef NSString *CALayerContentsGravity;
 -(void)windowWillEnterFullScreen:(NSNotification *)aNotification
 {
   inFullscreenTransition = YES;
-  lastUnfullscreenFrame = [self frame];
 }
 
 -(void)windowDidEnterFullScreen:(NSNotification *)aNotification

gdk/macos/GdkMacosWindow.h

@@ -49,7 +49,6 @@
 
   EdgeSnapping     snapping;
 
-  NSRect           lastUnfullscreenFrame;
   BOOL             inFullscreenTransition;
 }
 

gdk/macos/gdkmacosdisplay-wm.c

@@ -47,20 +47,20 @@ _gdk_macos_display_position_toplevel_with_parent (GdkMacosDisplay *self,
   /* Try to center on top of the parent but also try to make the whole thing
    * visible in case that lands us under the topbar/panel/etc.
    */
-  parent_rect.x = parent->root_x + parent->shadow_left;
-  parent_rect.y = parent->root_y + parent->shadow_top;
-  parent_rect.width = GDK_SURFACE (parent)->width - parent->shadow_left - parent->shadow_right;
-  parent_rect.height = GDK_SURFACE (parent)->height - parent->shadow_top - parent->shadow_bottom;
+  parent_rect.x = parent->root_x;
+  parent_rect.y = parent->root_y;
+  parent_rect.width = GDK_SURFACE (parent)->width;
+  parent_rect.height = GDK_SURFACE (parent)->height;
 
-  surface_rect.width = GDK_SURFACE (surface)->width - surface->shadow_left - surface->shadow_right;
-  surface_rect.height = GDK_SURFACE (surface)->height - surface->shadow_top - surface->shadow_bottom;
+  surface_rect.width = GDK_SURFACE (surface)->width;
+  surface_rect.height = GDK_SURFACE (surface)->height;
   surface_rect.x = parent_rect.x + ((parent_rect.width - surface_rect.width) / 2);
   surface_rect.y = parent_rect.y + ((parent_rect.height - surface_rect.height) / 2);
 
   _gdk_macos_monitor_clamp (GDK_MACOS_MONITOR (monitor), &surface_rect);
 
-  *x = surface_rect.x - surface->shadow_left;
-  *y = surface_rect.y - surface->shadow_top;
+  *x = surface_rect.x;
+  *y = surface_rect.y;
 }
 
 static inline gboolean
@@ -99,15 +99,15 @@ _gdk_macos_display_position_toplevel (GdkMacosDisplay *self,
   gdk_macos_monitor_get_workarea (monitor, &workarea);
 
   /* First place at top-left of current monitor */
-  surface_rect.width = GDK_SURFACE (surface)->width - surface->shadow_left - surface->shadow_right;
-  surface_rect.height = GDK_SURFACE (surface)->height - surface->shadow_top - surface->shadow_bottom;
+  surface_rect.width = GDK_SURFACE (surface)->width;
+  surface_rect.height = GDK_SURFACE (surface)->height;
   surface_rect.x = workarea.x + ((workarea.width - surface_rect.width) / 2);
   surface_rect.y = workarea.y + ((workarea.height - surface_rect.height) / 2);
 
   _gdk_macos_monitor_clamp (GDK_MACOS_MONITOR (surface->best_monitor), &surface_rect);
 
-  *x = surface_rect.x - surface->shadow_left;
-  *y = surface_rect.y - surface->shadow_top;
+  *x = surface_rect.x;
+  *y = surface_rect.y;
 
   /* Try to see if there are any other surfaces at this origin and if so,
    * adjust until we get something better.
@@ -119,11 +119,11 @@ _gdk_macos_display_position_toplevel (GdkMacosDisplay *self,
       *y += WARP_OFFSET_Y;
 
       /* If we reached the bottom right, just bail and try the workspace origin */
-      if (*x + surface->shadow_left + WARP_OFFSET_X > workarea.x + workarea.width ||
-          *y + surface->shadow_top + WARP_OFFSET_Y > workarea.y + workarea.height)
+      if (*x + WARP_OFFSET_X > workarea.x + workarea.width ||
+          *y + WARP_OFFSET_Y > workarea.y + workarea.height)
         {
-          *x = workarea.x - surface->shadow_left;
-          *y = workarea.y - surface->shadow_top;
+          *x = workarea.x;
+          *y = workarea.y;
           return;
         }
     }

gdk/macos/gdkmacosdisplay.c

@@ -998,7 +998,9 @@ _gdk_macos_display_get_nsevent (GdkEvent *event)
     {
       const GdkToNSEventMap *map = iter->data;
 
-      if (map->gdk_event == event)
+      if (map->gdk_event->event_type == event->event_type &&
+          map->gdk_event->device == event->device &&
+          map->gdk_event->time == event->time)
         return map->nsevent;
     }
 

gdk/macos/gdkmacospopupsurface.c

@@ -68,19 +68,10 @@ gdk_macos_popup_surface_layout (GdkMacosPopupSurface *self,
     monitor = _gdk_macos_surface_get_best_monitor (GDK_MACOS_SURFACE (self));
   gdk_macos_monitor_get_workarea (monitor, &bounds);
 
-  gdk_popup_layout_get_shadow_width (layout,
-                                     &self->parent_instance.shadow_left,
-                                     &self->parent_instance.shadow_right,
-                                     &self->parent_instance.shadow_top,
-                                     &self->parent_instance.shadow_bottom);
-
   gdk_surface_layout_popup_helper (GDK_SURFACE (self),
                                    width,
                                    height,
-                                   self->parent_instance.shadow_left,
-                                   self->parent_instance.shadow_right,
-                                   self->parent_instance.shadow_top,
-                                   self->parent_instance.shadow_bottom,
+                                   0, 0, 0, 0, /* shadow-left/right/top/bottom */
                                    monitor,
                                    &bounds,
                                    self->layout,

gdk/macos/gdkmacossurface-private.h

@@ -61,11 +61,6 @@ struct _GdkMacosSurface
     int height;
   } next_layout;
 
-  int shadow_top;
-  int shadow_right;
-  int shadow_bottom;
-  int shadow_left;
-
   cairo_rectangle_int_t next_frame;
 
   gint64 pending_frame_counter;
@@ -91,16 +86,6 @@ CGDirectDisplayID  _gdk_macos_surface_get_screen_id           (GdkMacosSurface
 const char        *_gdk_macos_surface_get_title               (GdkMacosSurface      *self);
 void               _gdk_macos_surface_set_title               (GdkMacosSurface      *self,
                                                                const char           *title);
-void               _gdk_macos_surface_get_shadow              (GdkMacosSurface      *self,
-                                                               int                  *top,
-                                                               int                  *right,
-                                                               int                  *bottom,
-                                                               int                  *left);
-void               _gdk_macos_surface_set_shadow              (GdkMacosSurface      *self,
-                                                               int                   top,
-                                                               int                   right,
-                                                               int                   bottom,
-                                                               int                   left);
 gboolean           _gdk_macos_surface_is_opaque               (GdkMacosSurface      *self);
 NSView            *_gdk_macos_surface_get_view                (GdkMacosSurface      *self);
 gboolean           _gdk_macos_surface_get_modal_hint          (GdkMacosSurface      *self);

gdk/macos/gdkmacossurface.c

@@ -56,14 +56,6 @@ enum {
 
 static GParamSpec *properties [LAST_PROP];
 
-static gboolean
-window_is_fullscreen (GdkMacosSurface *self)
-{
-  g_assert (GDK_IS_MACOS_SURFACE (self));
-
-  return ([self->window styleMask] & NSWindowStyleMaskFullScreen) != 0;
-}
-
 void
 _gdk_macos_surface_request_frame (GdkMacosSurface *self)
 {
@@ -244,32 +236,6 @@ gdk_macos_surface_get_scale (GdkSurface *surface)
   return [self->window backingScaleFactor];
 }
 
-void
-_gdk_macos_surface_set_shadow (GdkMacosSurface *surface,
-                               int              top,
-                               int              right,
-                               int              bottom,
-                               int              left)
-{
-  GdkMacosSurface *self = (GdkMacosSurface *)surface;
-
-  g_assert (GDK_IS_MACOS_SURFACE (self));
-
-  if (self->shadow_top == top &&
-      self->shadow_right == right &&
-      self->shadow_bottom == bottom &&
-      self->shadow_left == left)
-    return;
-
-  self->shadow_top = top;
-  self->shadow_right = right;
-  self->shadow_bottom = bottom;
-  self->shadow_left = left;
-
-  if (top || right || bottom || left)
-    [self->window setHasShadow:NO];
-}
-
 static void
 gdk_macos_surface_begin_frame (GdkMacosSurface *self)
 {
@@ -587,29 +553,6 @@ gdk_macos_surface_init (GdkMacosSurface *self)
   self->monitors = g_ptr_array_new_with_free_func (g_object_unref);
 }
 
-void
-_gdk_macos_surface_get_shadow (GdkMacosSurface *self,
-                               int             *top,
-                               int             *right,
-                               int             *bottom,
-                               int             *left)
-{
-
-  g_return_if_fail (GDK_IS_MACOS_SURFACE (self));
-
-  if (top)
-    *top = self->shadow_top;
-
-  if (left)
-    *left = self->shadow_left;
-
-  if (bottom)
-    *bottom = self->shadow_bottom;
-
-  if (right)
-    *right = self->shadow_right;
-}
-
 gboolean
 _gdk_macos_surface_is_opaque (GdkMacosSurface *self)
 {
@@ -758,7 +701,7 @@ _gdk_macos_surface_update_fullscreen_state (GdkMacosSurface *self)
   g_return_if_fail (GDK_IS_MACOS_SURFACE (self));
 
   state = GDK_SURFACE (self)->state;
-  is_fullscreen = window_is_fullscreen (self);
+  is_fullscreen = ([self->window styleMask] & NSWindowStyleMaskFullScreen) != 0;
   was_fullscreen = (state & GDK_TOPLEVEL_STATE_FULLSCREEN) != 0;
 
   if (is_fullscreen != was_fullscreen)
@@ -1105,16 +1048,12 @@ _gdk_macos_surface_monitor_changed (GdkMacosSurface *self)
 
           g_set_object (&child->best_monitor, best);
 
-          area.x = self->root_x + GDK_SURFACE (child)->x + child->shadow_left;
-          area.y = self->root_y + GDK_SURFACE (child)->y + child->shadow_top;
-          area.width = GDK_SURFACE (child)->width - child->shadow_left - child->shadow_right;
-          area.height = GDK_SURFACE (child)->height - child->shadow_top - child->shadow_bottom;
+          area.x = self->root_x + GDK_SURFACE (child)->x;
+          area.y = self->root_y + GDK_SURFACE (child)->y;
+          area.width = GDK_SURFACE (child)->width;
+          area.height = GDK_SURFACE (child)->height;
 
           _gdk_macos_monitor_clamp (GDK_MACOS_MONITOR (best), &area);
-
-          area.x -= child->shadow_left;
-          area.y -= child->shadow_top;
-
           _gdk_macos_surface_move (child, area.x, area.y);
           gdk_surface_invalidate_rect (GDK_SURFACE (child), NULL);
         }

gdk/macos/gdkmacostoplevelsurface.c

@@ -152,13 +152,6 @@ _gdk_macos_toplevel_surface_compute_size (GdkSurface *surface)
       mask = GDK_HINT_MIN_SIZE | GDK_HINT_MAX_SIZE;
     }
 
-  if (size.shadow.is_valid)
-    _gdk_macos_surface_set_shadow (macos_surface,
-                                   size.shadow.top,
-                                   size.shadow.right,
-                                   size.shadow.bottom,
-                                   size.shadow.left);
-
   _gdk_macos_surface_set_geometry_hints (macos_surface, &geometry, mask);
 
   if (surface->state & (GDK_TOPLEVEL_STATE_FULLSCREEN |

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" },

gdk/wayland/gdkdevice-wayland-private.h

@@ -182,6 +182,8 @@ 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

@@ -310,7 +310,8 @@ 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 (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
@@ -585,21 +585,25 @@ 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));
     }
 
@@ -700,7 +704,8 @@ _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 +715,18 @@ _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;
@@ -799,6 +816,7 @@ 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->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)
@@ -1996,9 +2014,10 @@ 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;

gdk/wayland/gdkdisplay-wayland.h

@@ -39,6 +39,7 @@
 #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 <glib.h>
 #include <gdk/gdkkeys.h>
@@ -125,6 +126,7 @@ struct _GdkWaylandDisplay
   struct xdg_activation_v1 *xdg_activation;
   struct wp_fractional_scale_manager_v1 *fractional_scale;
   struct wp_viewporter *viewporter;
+  struct wp_presentation *presentation;
 
   GList *async_roundtrips;
 

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>
 

gdk/wayland/gdkseat-wayland.c

@@ -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),
@@ -4390,15 +4391,24 @@ _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.c

@@ -466,9 +466,9 @@ gdk_wayland_surface_create_subsurface (GdkSurface *surface)
   GdkWaylandSubsurface *sub;
   struct wl_region *region;
 
-  if (disp->viewporter == NULL)
+  if (disp->subcompositor == NULL || disp->viewporter == NULL)
     {
-      GDK_DISPLAY_DEBUG (display, OFFLOAD, "Can't use subsurfaces without viewporter");
+      GDK_DISPLAY_DEBUG (display, OFFLOAD, "Can't use subsurfaces without subcompositor and viewporter");
       return NULL;
     }
 

gdk/wayland/gdksurface-wayland-private.h

@@ -44,6 +44,8 @@ struct _GdkWaylandSurface
   struct wl_event_queue *event_queue;
   struct wl_callback *frame_callback;
 
+  GdkWaylandPresentationTime *presentation_time;
+
   unsigned int initial_configure_received : 1;
   unsigned int has_uncommitted_ack_configure : 1;
   unsigned int has_pending_subsurface_commits : 1;

gdk/wayland/gdksurface-wayland.c

@@ -52,6 +52,7 @@
 #include "gdktoplevel-wayland-private.h"
 
 #include "linux-dmabuf-unstable-v1-client-protocol.h"
+#include "presentation-time-client-protocol.h"
 
 
 /**
@@ -270,6 +271,20 @@ gdk_wayland_surface_update_size (GdkSurface               *surface,
   _gdk_surface_update_size (surface);
 }
 
+static void
+gdk_wayland_surface_clear_frame_callback (GdkWaylandSurface *self)
+{
+  GdkSurface *surface = GDK_SURFACE (self);
+
+  g_clear_pointer (&self->frame_callback, wl_callback_destroy);
+
+  for (gsize i = 0; i < gdk_surface_get_n_subsurfaces (surface); i++)
+    {
+      GdkSubsurface *subsurface = gdk_surface_get_subsurface (surface, i);
+      gdk_wayland_subsurface_clear_frame_callback (subsurface);
+    }
+}
+
 void
 gdk_wayland_surface_frame_callback (GdkSurface *surface,
                                     uint32_t    time)
@@ -283,13 +298,7 @@ gdk_wayland_surface_frame_callback (GdkSurface *surface,
   gdk_profiler_add_mark (GDK_PROFILER_CURRENT_TIME, 0, "Wayland frame event", NULL);
   GDK_DISPLAY_DEBUG (GDK_DISPLAY (display_wayland), EVENTS, "frame %p", surface);
 
-  g_clear_pointer (&impl->frame_callback, wl_callback_destroy);
-
-  for (gsize i = 0; i < gdk_surface_get_n_subsurfaces (surface); i++)
-    {
-      GdkSubsurface *subsurface = gdk_surface_get_subsurface (surface, i);
-      gdk_wayland_subsurface_clear_frame_callback (subsurface);
-    }
+  gdk_wayland_surface_clear_frame_callback (impl);
 
   GDK_WAYLAND_SURFACE_GET_CLASS (impl)->handle_frame (impl);
 
@@ -403,6 +412,17 @@ gdk_wayland_surface_request_frame (GdkSurface *surface)
   wl_proxy_set_queue ((struct wl_proxy *) self->frame_callback, NULL);
   wl_callback_add_listener (self->frame_callback, &frame_listener, surface);
 
+  if (self->presentation_time == NULL)
+    {
+      GdkWaylandDisplay *wayland_display = GDK_WAYLAND_DISPLAY (gdk_surface_get_display (surface));
+      self->presentation_time = gdk_wayland_presentation_time_new (wayland_display);
+    }
+
+  gdk_wayland_presentation_time_track (self->presentation_time,
+                                       clock,
+                                       self->display_server.wl_surface,
+                                       gdk_frame_clock_get_frame_counter (clock));
+
   for (gsize i = 0; i < gdk_surface_get_n_subsurfaces (surface); i++)
     {
       GdkSubsurface *subsurface = gdk_surface_get_subsurface (surface, i);
@@ -1048,7 +1068,8 @@ gdk_wayland_surface_hide_surface (GdkSurface *surface)
 
   unmap_popups_for_surface (surface);
 
-  g_clear_pointer (&impl->frame_callback, wl_callback_destroy);
+  g_clear_pointer (&impl->presentation_time, gdk_wayland_presentation_time_free);
+  gdk_wayland_surface_clear_frame_callback (impl);
   if (impl->awaiting_frame_frozen)
     {
       impl->awaiting_frame_frozen = FALSE;

gdk/wayland/gdktoplevel-wayland.c

@@ -34,6 +34,7 @@
 #include "gdktoplevelprivate.h"
 #include "gdkdevice-wayland-private.h"
 
+#include <wayland/presentation-time-client-protocol.h>
 #include <wayland/xdg-shell-unstable-v6-client-protocol.h>
 #include <wayland/xdg-foreign-unstable-v2-client-protocol.h>
 
@@ -122,6 +123,8 @@ struct _GdkWaylandToplevel
 
   struct wl_output *initial_fullscreen_output;
 
+  struct wp_presentation_feedback *feedback;
+
   struct {
     GdkToplevelState unset_flags;
     GdkToplevelState set_flags;

gdk/wayland/gdkwaylandpresentationtime-private.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <gdk/gdkframeclock.h>
+#include <gdk/wayland/gdkdisplay-wayland.h>
+#include <gdk/wayland/gdksurface-wayland.h>
+#include <gdk/wayland/gdkwaylanddisplay.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GdkWaylandPresentationTime GdkWaylandPresentationTime;
+
+GdkWaylandPresentationTime *gdk_wayland_presentation_time_new   (GdkWaylandDisplay          *display);
+void                        gdk_wayland_presentation_time_track (GdkWaylandPresentationTime *self,
+                                                                 GdkFrameClock              *frame_clock,
+                                                                 struct wl_surface          *surface,
+                                                                 gint64                      frame_number);
+void                        gdk_wayland_presentation_time_free  (GdkWaylandPresentationTime *self);
+
+G_END_DECLS

gdk/wayland/gdkwaylandpresentationtime.c

@@ -0,0 +1,152 @@
+#include "config.h"
+
+#include <gdk/gdkframeclockprivate.h>
+
+#include "gdkwaylandpresentationtime-private.h"
+
+typedef struct _GdkWaylandPresentationFrame
+{
+  GdkWaylandPresentationTime *self;
+  struct wp_presentation_feedback *feedback;
+  GdkFrameClock *frame_clock;
+  gint64 frame_number;
+} GdkWaylandPresentationFrame;
+
+static void
+gdk_wayland_presentation_frame_free (GdkWaylandPresentationFrame *frame)
+{
+  g_clear_pointer (&frame->feedback, wp_presentation_feedback_destroy);
+  g_clear_object (&frame->frame_clock);
+  frame->self = NULL;
+  g_free (frame);
+}
+
+struct _GdkWaylandPresentationTime
+{
+  GdkWaylandDisplay *display;
+  GPtrArray *frames;
+};
+
+GdkWaylandPresentationTime *
+gdk_wayland_presentation_time_new (GdkWaylandDisplay *display)
+{
+  GdkWaylandPresentationTime *self;
+
+  g_return_val_if_fail (GDK_IS_WAYLAND_DISPLAY (display), NULL);
+
+  self = g_new0 (GdkWaylandPresentationTime, 1);
+  self->display = g_object_ref (display);
+  self->frames = g_ptr_array_new_with_free_func ((GDestroyNotify)gdk_wayland_presentation_frame_free);
+
+  return self;
+}
+
+void
+gdk_wayland_presentation_time_free (GdkWaylandPresentationTime *self)
+{
+  g_clear_pointer (&self->frames, g_ptr_array_unref);
+  g_clear_object (&self->display);
+  g_free (self);
+}
+
+static gint64
+time_from_wayland (uint32_t tv_sec_hi,
+                   uint32_t tv_sec_lo,
+                   uint32_t tv_nsec)
+{
+  guint64 t = tv_sec_hi;
+  t <<= 32;
+  t |= tv_sec_lo;
+  t *= G_USEC_PER_SEC;
+  t += tv_nsec / 1000L;
+  return (gint64)t;
+}
+
+static void
+gdk_wayland_presentation_feedback_sync_output (void                            *data,
+                                               struct wp_presentation_feedback *feedback,
+                                               struct wl_output                *output)
+{
+}
+
+static void
+gdk_wayland_presentation_feedback_presented (void                            *data,
+                                             struct wp_presentation_feedback *feedback,
+                                             uint32_t                         tv_sec_hi,
+                                             uint32_t                         tv_sec_lo,
+                                             uint32_t                         tv_nsec,
+                                             uint32_t                         refresh,
+                                             uint32_t                         seq_hi,
+                                             uint32_t                         seq_lo,
+                                             uint32_t                         flags)
+{
+  GdkWaylandPresentationFrame *frame = data;
+  GdkWaylandPresentationTime *self;
+  GdkFrameTimings *timings;
+  guint pos;
+
+  g_assert (frame != NULL);
+  g_assert (frame->self != NULL);
+
+  self = frame->self;
+
+  if ((timings = gdk_frame_clock_get_timings (frame->frame_clock, frame->frame_number)))
+    {
+      timings->presentation_time = time_from_wayland (tv_sec_hi, tv_sec_lo, tv_nsec);
+      timings->complete = TRUE;
+    }
+
+  if (g_ptr_array_find (self->frames, frame, &pos))
+    g_ptr_array_remove_index_fast (self->frames, pos);
+}
+
+static void
+gdk_wayland_presentation_feedback_discarded (void                            *data,
+                                             struct wp_presentation_feedback *feedback)
+{
+  GdkWaylandPresentationFrame *frame = data;
+  guint pos;
+
+  g_assert (frame != NULL);
+  g_assert (frame->self != NULL);
+
+  if (g_ptr_array_find (frame->self->frames, frame, &pos))
+    g_ptr_array_remove_index_fast (frame->self->frames, pos);
+}
+
+static const struct wp_presentation_feedback_listener gdk_wayland_presentation_feedback_listener = {
+  gdk_wayland_presentation_feedback_sync_output,
+  gdk_wayland_presentation_feedback_presented,
+  gdk_wayland_presentation_feedback_discarded,
+};
+
+void
+gdk_wayland_presentation_time_track (GdkWaylandPresentationTime *self,
+                                     GdkFrameClock              *frame_clock,
+                                     struct wl_surface          *surface,
+                                     gint64                      frame_number)
+{
+  struct wp_presentation_feedback *feedback;
+  GdkWaylandPresentationFrame *frame;
+
+  g_return_if_fail (self != NULL);
+  g_return_if_fail (surface != NULL);
+
+  if (self->display->presentation == NULL)
+    return;
+
+  if (!(feedback = wp_presentation_feedback (self->display->presentation, surface)))
+    return;
+
+  frame = g_new0 (GdkWaylandPresentationFrame, 1);
+  frame->self = self;
+  frame->frame_clock = g_object_ref (frame_clock);
+  frame->frame_number = frame_number;
+  frame->feedback = g_steal_pointer (&feedback);
+
+  g_ptr_array_add (self->frames, frame);
+
+  wp_presentation_feedback_add_listener (frame->feedback,
+                                         &gdk_wayland_presentation_feedback_listener,
+                                         frame);
+}

gdk/wayland/meson.build

@@ -22,6 +22,7 @@ gdk_wayland_sources = files([
   'gdktoplevel-wayland.c',
   'gdkpopup-wayland.c',
   'gdkvulkancontext-wayland.c',
+  'gdkwaylandpresentationtime.c',
   'wm-button-layout-translation.c',
 ])
 
@@ -69,6 +70,7 @@ proto_sources = [
   ['xdg-activation', 'staging', 'v1', ],
   ['fractional-scale', 'staging', 'v1', ],
   ['linux-dmabuf', 'unstable', 'v1', ],
+  ['presentation-time', 'stable', 'v1', ],
 ]
 
 gdk_wayland_gen_headers = []

gdk/win32/gdksurface-win32.c

@@ -1627,7 +1627,7 @@ _gdk_win32_surface_lacks_wm_decorations (GdkSurface *window)
   has_any_decorations = FALSE;
 
   if (style & (WS_BORDER | WS_THICKFRAME | WS_CAPTION |
-               WS_SYSMENU | WS_MINIMIZEBOX | WS_MAXIMIZEBOX))
+               WS_SYSMENU | WS_MAXIMIZEBOX))
     has_any_decorations = TRUE;
   else
     GDK_NOTE (MISC, g_print ("Window %p (handle %p): has no decorations (style %lx)\n",
@@ -1696,7 +1696,6 @@ _gdk_win32_surface_update_style_bits (GdkSurface *window)
       update_single_bit (&new_style, all, decorations & GDK_DECOR_RESIZEH, WS_THICKFRAME);
       update_single_bit (&new_style, all, decorations & GDK_DECOR_TITLE, WS_CAPTION);
       update_single_bit (&new_style, all, decorations & GDK_DECOR_MENU, WS_SYSMENU);
-      update_single_bit (&new_style, all, decorations & GDK_DECOR_MINIMIZE, WS_MINIMIZEBOX);
       update_single_bit (&new_style, all, decorations & GDK_DECOR_MAXIMIZE, WS_MAXIMIZEBOX);
     }
 

gsk/gl/gskglcommandqueue.c

@@ -488,12 +488,14 @@ gsk_gl_command_queue_new (GdkGLContext      *context,
       int max_texture_size = atoi (g_getenv ("GSK_MAX_TEXTURE_SIZE"));
       if (max_texture_size == 0)
         {
-          g_warning ("Failed to parse GSK_MAX_TEXTURE_SIZE");
+          g_warning ("Failed to parse %s", "GSK_MAX_TEXTURE_SIZE");
         }
       else
         {
           max_texture_size = MAX (max_texture_size, 512);
-          GSK_DEBUG(OPENGL, "Limiting max texture size to %d", max_texture_size);
+          GSK_DEBUG (RENDERER,
+                     "Limiting texture size in the GL renderer to %d (via %s)",
+                     max_texture_size, "GSK_MAX_TEXTURE_SIZE");
           self->max_texture_size = MIN (self->max_texture_size, max_texture_size);
         }
     }
@@ -1622,7 +1624,7 @@ gsk_gl_command_queue_do_upload_texture_chunk (GskGLCommandQueue *self,
     {
       glTexSubImage2D (GL_TEXTURE_2D, 0, x, y, width, height, gl_format, gl_type, data);
     }
-  else if (stride % bpp == 0 && gdk_gl_context_has_unpack_subimage (self->context))
+  else if (stride % bpp == 0 && gdk_gl_context_has_feature (self->context, GDK_GL_FEATURE_UNPACK_SUBIMAGE))
     {
       glPixelStorei (GL_UNPACK_ROW_LENGTH, stride / bpp);
 

gsk/gl/gskgldriver.c

@@ -1835,7 +1835,7 @@ gsk_gl_driver_create_gdk_texture (GskGLDriver     *self,
   state = g_new0 (GskGLTextureState, 1);
   state->texture_id = texture_id;
   state->context = g_object_ref (self->command_queue->context);
-  if (gdk_gl_context_has_sync (self->command_queue->context))
+  if (gdk_gl_context_has_feature (self->command_queue->context, GDK_GL_FEATURE_SYNC))
     state->sync = glFenceSync (GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
 
   g_hash_table_steal (self->textures, GUINT_TO_POINTER (texture_id));

gsk/gl/gskglrenderer.c

@@ -194,7 +194,7 @@ gsk_gl_renderer_realize (GskRenderer  *renderer,
     {
       gdk_gl_context_make_current (context);
 
-      if (!gdk_gl_context_has_vertex_half_float (context))
+      if (!gdk_gl_context_has_feature (context, GDK_GL_FEATURE_VERTEX_HALF_FLOAT))
         {
           int major, minor;
 

gsk/gl/gskglrenderjob.c

@@ -52,8 +52,6 @@
 #include "ninesliceprivate.h"
 #include "fp16private.h"
 
-#define ALLOW_OFFLOAD_FOR_ANY_TEXTURE 1
-
 #define ORTHO_NEAR_PLANE   -10000
 #define ORTHO_FAR_PLANE     10000
 #define MAX_GRADIENT_STOPS  6
@@ -176,6 +174,8 @@ struct _GskGLRenderJob
    * looking at the format of the framebuffer we are rendering on.
    */
   int target_format;
+
+  guint offscreen_count; /* if > 0, we're rendering to an offscreen */
 };
 
 typedef struct _GskGLRenderOffscreen
@@ -1235,7 +1235,7 @@ gsk_gl_render_job_visit_as_fallback (GskGLRenderJob      *job,
   texture = gdk_texture_new_for_surface (surface);
   texture_id = gsk_gl_driver_load_texture (job->driver, texture, FALSE);
 
-  if (gdk_gl_context_has_debug (job->command_queue->context))
+  if (gdk_gl_context_has_feature (job->command_queue->context, GDK_GL_FEATURE_DEBUG))
     gdk_gl_context_label_object_printf (job->command_queue->context, GL_TEXTURE, texture_id,
                                         "Fallback %s %d",
                                         g_type_name_from_instance ((GTypeInstance *) node),
@@ -2532,7 +2532,7 @@ gsk_gl_render_job_visit_blurred_outset_shadow_node (GskGLRenderJob      *job,
                                           get_target_format (job, node),
                                           &render_target);
 
-      if (gdk_gl_context_has_debug (context))
+      if (gdk_gl_context_has_feature (context, GDK_GL_FEATURE_DEBUG))
         {
           gdk_gl_context_label_object_printf (context,
                                               GL_TEXTURE,
@@ -4002,9 +4002,15 @@ gsk_gl_render_job_visit_subsurface_node (GskGLRenderJob      *job,
     {
       if (!gdk_subsurface_is_above_parent (subsurface))
         {
-          /* Clear the area so we can see through */
-          if (gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color)))
+          if (job->offscreen_count > 0)
             {
+              GDK_DISPLAY_DEBUG (gdk_gl_context_get_display (job->command_queue->context), OFFLOAD, "Hiding subsurface %p in offscreen context", subsurface);
+              gdk_subsurface_detach (subsurface);
+              gsk_gl_render_job_visit_node (job, gsk_subsurface_node_get_child (node));
+            }
+          else if (gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color)))
+            {
+              /* Clear the area so we can see through */
               GskGLCommandBatch *batch;
               guint16 color[4];
               rgba_to_half (&(GdkRGBA){0,0,0,0}, color);
@@ -4382,7 +4388,7 @@ gsk_gl_render_job_visit_node_with_offscreen (GskGLRenderJob       *job,
                                            &render_target))
     g_assert_not_reached ();
 
-  if (gdk_gl_context_has_debug (job->command_queue->context))
+  if (gdk_gl_context_has_feature (job->command_queue->context, GDK_GL_FEATURE_DEBUG))
     {
       gdk_gl_context_label_object_printf (job->command_queue->context,
                                           GL_TEXTURE,
@@ -4422,8 +4428,12 @@ gsk_gl_render_job_visit_node_with_offscreen (GskGLRenderJob       *job,
       reset_clip = TRUE;
     }
 
+  job->offscreen_count++;
+
   gsk_gl_render_job_visit_node (job, node);
 
+  job->offscreen_count--;
+
   if (reset_clip)
     gsk_gl_render_job_pop_clip (job);
 

gsk/gpu/gskglbuffer.c

@@ -1,30 +1,25 @@
 #include "config.h"
 
-#include <gdk/gdkprofilerprivate.h>
-
 #include "gskglbufferprivate.h"
 
+/* {{{ GskGLBuffer */
+
 struct _GskGLBuffer
 {
   GskGpuBuffer parent_instance;
 
   GLenum target;
   GLuint buffer_id;
-  GLenum access;
   guchar *data;
 };
 
 G_DEFINE_TYPE (GskGLBuffer, gsk_gl_buffer, GSK_TYPE_GPU_BUFFER)
 
-static guint profiler_buffer_uploads_id;
-static gint64 profiler_buffer_uploads;
-
 static void
 gsk_gl_buffer_finalize (GObject *object)
 {
   GskGLBuffer *self = GSK_GL_BUFFER (object);
 
-  g_free (self->data);
   glDeleteBuffers (1, &self->buffer_id);
 
   G_OBJECT_CLASS (gsk_gl_buffer_parent_class)->finalize (object);
@@ -42,16 +37,6 @@ static void
 gsk_gl_buffer_unmap (GskGpuBuffer *buffer,
                      gsize         used)
 {
-  GskGLBuffer *self = GSK_GL_BUFFER (buffer);
-
-  if (used == 0)
-    return;
-
-  gsk_gl_buffer_bind (self);
-
-  profiler_buffer_uploads += used;
-  glBufferSubData (self->target, 0, used, self->data);
-  gdk_profiler_set_int_counter (profiler_buffer_uploads_id, profiler_buffer_uploads);
 }
 
 static void
@@ -64,8 +49,6 @@ gsk_gl_buffer_class_init (GskGLBufferClass *klass)
   buffer_class->unmap = gsk_gl_buffer_unmap;
 
   gobject_class->finalize = gsk_gl_buffer_finalize;
-
-  profiler_buffer_uploads_id = gdk_profiler_define_int_counter ("ngl-buffer-uploads", "Number of bytes uploaded to GPU");
 }
 
 static void
@@ -73,28 +56,6 @@ gsk_gl_buffer_init (GskGLBuffer *self)
 {
 }
 
-GskGpuBuffer *
-gsk_gl_buffer_new (GLenum target,
-                   gsize  size,
-                   GLenum access)
-{
-  GskGLBuffer *self;
-
-  self = g_object_new (GSK_TYPE_GL_BUFFER, NULL);
-
-  gsk_gpu_buffer_setup (GSK_GPU_BUFFER (self), size);
-
-  self->target = target;
-  self->access = access;
-
-  glGenBuffers (1, &self->buffer_id);
-  glBindBuffer (target, self->buffer_id);
-  glBufferData (target, size, NULL, GL_STATIC_DRAW);
-  self->data = malloc (size);
-
-  return GSK_GPU_BUFFER (self);
-}
-
 void
 gsk_gl_buffer_bind (GskGLBuffer *self)
 {
@@ -108,3 +69,140 @@ gsk_gl_buffer_bind_base (GskGLBuffer *self,
   glBindBufferBase (self->target, index, self->buffer_id);
 }
 
+static void
+gsk_gl_buffer_setup (GskGLBuffer *self,
+                     GLenum       target,
+                     gsize        size)
+{
+  gsk_gpu_buffer_setup (GSK_GPU_BUFFER (self), size);
+
+  self->target = target;
+
+  glGenBuffers (1, &self->buffer_id);
+}
+
+/* }}} */
+/* {{{ GskGLMappedBuffer */
+
+struct _GskGLMappedBuffer
+{
+  GskGLBuffer parent_instance;
+};
+
+G_DEFINE_TYPE (GskGLMappedBuffer, gsk_gl_mapped_buffer, GSK_TYPE_GL_BUFFER)
+
+static void
+gsk_gl_mapped_buffer_finalize (GObject *object)
+{
+  GskGLBuffer *self = GSK_GL_BUFFER (object);
+
+  gsk_gl_buffer_bind (self);
+  glUnmapBuffer (self->target);
+
+  G_OBJECT_CLASS (gsk_gl_mapped_buffer_parent_class)->finalize (object);
+}
+
+static void
+gsk_gl_mapped_buffer_class_init (GskGLMappedBufferClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  gobject_class->finalize = gsk_gl_mapped_buffer_finalize;
+}
+
+static void
+gsk_gl_mapped_buffer_init (GskGLMappedBuffer *self)
+{
+}
+
+GskGpuBuffer *
+gsk_gl_mapped_buffer_new (GLenum target,
+                          gsize  size)
+{
+  GskGLBuffer *self;
+
+  self = g_object_new (GSK_TYPE_GL_MAPPED_BUFFER, NULL);
+
+  gsk_gl_buffer_setup (self, target, size);
+  gsk_gl_buffer_bind (self);
+
+  glBufferStorage (target,
+                   size,
+                   NULL,
+                   GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
+  self->data = glMapBufferRange (target,
+                                 0,
+                                 size,
+                                 GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
+
+  return GSK_GPU_BUFFER (self);
+}
+
+/* }}} */
+/* {{{ GskGLCopiedBuffer */
+
+struct _GskGLCopiedBuffer
+{
+  GskGLBuffer parent_instance;
+};
+
+G_DEFINE_TYPE (GskGLCopiedBuffer, gsk_gl_copied_buffer, GSK_TYPE_GL_BUFFER)
+
+static void
+gsk_gl_copied_buffer_finalize (GObject *object)
+{
+  GskGLBuffer *self = GSK_GL_BUFFER (object);
+
+  g_free (self->data);
+
+  G_OBJECT_CLASS (gsk_gl_copied_buffer_parent_class)->finalize (object);
+}
+
+static void
+gsk_gl_copied_buffer_unmap (GskGpuBuffer *buffer,
+                            gsize         used)
+{
+  GskGLBuffer *self = GSK_GL_BUFFER (buffer);
+
+  if (used == 0)
+    return;
+
+  gsk_gl_buffer_bind (self);
+
+  glBufferSubData (self->target, 0, used, self->data);
+}
+
+static void
+gsk_gl_copied_buffer_class_init (GskGLCopiedBufferClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GskGpuBufferClass *buffer_class = GSK_GPU_BUFFER_CLASS (klass);
+
+  gobject_class->finalize = gsk_gl_copied_buffer_finalize;
+
+  buffer_class->unmap = gsk_gl_copied_buffer_unmap;
+}
+
+static void
+gsk_gl_copied_buffer_init (GskGLCopiedBuffer *self)
+{
+}
+
+GskGpuBuffer *
+gsk_gl_copied_buffer_new (GLenum target,
+                          gsize  size)
+{
+  GskGLBuffer *self;
+
+  self = g_object_new (GSK_TYPE_GL_COPIED_BUFFER, NULL);
+
+  gsk_gl_buffer_setup (self, target, size);
+  gsk_gl_buffer_bind (self);
+
+  glBufferData (target, size, NULL, GL_STATIC_DRAW);
+  self->data = malloc (size);
+
+  return GSK_GPU_BUFFER (self);
+}
+
+/* }}} */

gsk/gpu/gskglbufferprivate.h

@@ -7,12 +7,17 @@
 G_BEGIN_DECLS
 
 #define GSK_TYPE_GL_BUFFER (gsk_gl_buffer_get_type ())
+#define GSK_TYPE_GL_MAPPED_BUFFER (gsk_gl_mapped_buffer_get_type ())
+#define GSK_TYPE_GL_COPIED_BUFFER (gsk_gl_copied_buffer_get_type ())
 
 G_DECLARE_FINAL_TYPE (GskGLBuffer, gsk_gl_buffer, GSK, GL_BUFFER, GskGpuBuffer)
+G_DECLARE_FINAL_TYPE (GskGLMappedBuffer, gsk_gl_mapped_buffer, GSK, GL_MAPPED_BUFFER, GskGLBuffer)
+G_DECLARE_FINAL_TYPE (GskGLCopiedBuffer, gsk_gl_copied_buffer, GSK, GL_COPIED_BUFFER, GskGLBuffer)
 
-GskGpuBuffer *          gsk_gl_buffer_new                               (GLenum                  target,
-                                                                         gsize                   size,
-                                                                         GLenum                  access);
+GskGpuBuffer *          gsk_gl_mapped_buffer_new                        (GLenum                  target,
+                                                                         gsize                   size);
+GskGpuBuffer *          gsk_gl_copied_buffer_new                        (GLenum                  target,
+                                                                         gsize                   size);
 
 void                    gsk_gl_buffer_bind                              (GskGLBuffer            *self);
 void                    gsk_gl_buffer_bind_base                         (GskGLBuffer            *self,

gsk/gpu/gskglframe.c

@@ -20,6 +20,7 @@ struct _GskGLFrame
 
   GLuint globals_buffer_id;
   guint next_texture_slot;
+  GLsync sync;
 
   GHashTable *vaos;
 };
@@ -34,7 +35,23 @@ G_DEFINE_TYPE (GskGLFrame, gsk_gl_frame, GSK_TYPE_GPU_FRAME)
 static gboolean
 gsk_gl_frame_is_busy (GskGpuFrame *frame)
 {
-  return FALSE;
+  GskGLFrame *self = GSK_GL_FRAME (frame);
+
+  if (!self->sync)
+    return FALSE;
+
+  return glClientWaitSync (self->sync, 0, 0) == GL_TIMEOUT_EXPIRED;
+}
+
+static void
+gsk_gl_frame_wait (GskGpuFrame *frame)
+{
+  GskGLFrame *self = GSK_GL_FRAME (frame);
+
+  if (!self->sync)
+    return;
+
+  glClientWaitSync (self->sync, 0, G_MAXINT64);
 }
 
 static void
@@ -50,6 +67,12 @@ gsk_gl_frame_cleanup (GskGpuFrame *frame)
 {
   GskGLFrame *self = GSK_GL_FRAME (frame);
 
+  if (self->sync)
+    {
+      glClientWaitSync (self->sync, 0, -1);
+      g_clear_pointer (&self->sync, glDeleteSync);
+    }
+
   self->next_texture_slot = 0;
 
   GSK_GPU_FRAME_CLASS (gsk_gl_frame_parent_class)->cleanup (frame);
@@ -124,14 +147,22 @@ gsk_gl_frame_create_vertex_buffer (GskGpuFrame *frame,
    */
   g_hash_table_remove_all (self->vaos);
 
-  return gsk_gl_buffer_new (GL_ARRAY_BUFFER, size, GL_WRITE_ONLY);
+  if (gdk_gl_context_has_feature (GDK_GL_CONTEXT (gsk_gpu_frame_get_context (frame)),
+                                  GDK_GL_FEATURE_BUFFER_STORAGE))
+    return gsk_gl_mapped_buffer_new (GL_ARRAY_BUFFER, size);
+  else
+    return gsk_gl_copied_buffer_new (GL_ARRAY_BUFFER, size);
 }
 
 static GskGpuBuffer *
 gsk_gl_frame_create_storage_buffer (GskGpuFrame *frame,
                                     gsize        size)
 {
-  return gsk_gl_buffer_new (GL_UNIFORM_BUFFER, size, GL_WRITE_ONLY);
+  if (gdk_gl_context_has_feature (GDK_GL_CONTEXT (gsk_gpu_frame_get_context (frame)),
+                                  GDK_GL_FEATURE_BUFFER_STORAGE))
+    return gsk_gl_mapped_buffer_new (GL_UNIFORM_BUFFER, size);
+  else
+    return gsk_gl_copied_buffer_new (GL_UNIFORM_BUFFER, size);
 }
 
 static void
@@ -160,6 +191,10 @@ gsk_gl_frame_submit (GskGpuFrame  *frame,
     {
       op = gsk_gpu_op_gl_command (op, frame, &state);
     }
+
+  if (gdk_gl_context_has_feature (GDK_GL_CONTEXT (gsk_gpu_frame_get_context (frame)),
+                                  GDK_GL_FEATURE_SYNC))
+    self->sync = glFenceSync (GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
 }
 
 static void
@@ -180,6 +215,7 @@ gsk_gl_frame_class_init (GskGLFrameClass *klass)
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
   gpu_frame_class->is_busy = gsk_gl_frame_is_busy;
+  gpu_frame_class->wait = gsk_gl_frame_wait;
   gpu_frame_class->setup = gsk_gl_frame_setup;
   gpu_frame_class->cleanup = gsk_gl_frame_cleanup;
   gpu_frame_class->upload_texture = gsk_gl_frame_upload_texture;

gsk/gpu/gskgpublendmodeop.c

@@ -17,23 +17,16 @@ struct _GskGpuBlendModeOp
 };
 
 static void
-gsk_gpu_blend_mode_op_print (GskGpuOp    *op,
-                             GskGpuFrame *frame,
-                             GString     *string,
-                             guint        indent)
+gsk_gpu_blend_mode_op_print_instance (GskGpuShaderOp *shader,
+                                      gpointer        instance_,
+                                      GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuBlendmodeInstance *instance;
+  GskGpuBlendmodeInstance *instance = (GskGpuBlendmodeInstance *) instance_;
 
-  instance = (GskGpuBlendmodeInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "blend-mode");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->bottom_id);
   gsk_gpu_print_enum (string, GSK_TYPE_BLEND_MODE, shader->variation);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->top_id);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_BLEND_MODE_OP_CLASS = {
@@ -41,7 +34,7 @@ static const GskGpuShaderOpClass GSK_GPU_BLEND_MODE_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuBlendModeOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_blend_mode_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -52,6 +45,7 @@ static const GskGpuShaderOpClass GSK_GPU_BLEND_MODE_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_blendmode_info,
 #endif
+  gsk_gpu_blend_mode_op_print_instance,
   gsk_gpu_blendmode_setup_attrib_locations,
   gsk_gpu_blendmode_setup_vao
 };

gsk/gpu/gskgpublurop.c

@@ -20,22 +20,15 @@ struct _GskGpuBlurOp
 };
 
 static void
-gsk_gpu_blur_op_print (GskGpuOp    *op,
-                       GskGpuFrame *frame,
-                       GString     *string,
-                       guint        indent)
+gsk_gpu_blur_op_print_instance (GskGpuShaderOp *shader,
+                                gpointer        instance_,
+                                GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuBlurInstance *instance;
+  GskGpuBlurInstance *instance = (GskGpuBlurInstance *) instance_;
 
-  instance = (GskGpuBlurInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "blur");
-  gsk_gpu_print_shader_info (string, shader->clip);
   g_string_append_printf (string, "%g,%g ", instance->blur_direction[0], instance->blur_direction[1]);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->tex_id);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_BLUR_OP_CLASS = {
@@ -43,7 +36,7 @@ static const GskGpuShaderOpClass GSK_GPU_BLUR_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuBlurOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_blur_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -54,6 +47,7 @@ static const GskGpuShaderOpClass GSK_GPU_BLUR_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_blur_info,
 #endif
+  gsk_gpu_blur_op_print_instance,
   gsk_gpu_blur_setup_attrib_locations,
   gsk_gpu_blur_setup_vao
 };

gsk/gpu/gskgpuborderop.c

@@ -25,18 +25,12 @@ color_equal (const float *color1,
 }
 
 static void
-gsk_gpu_border_op_print (GskGpuOp    *op,
-                         GskGpuFrame *frame,
-                         GString     *string,
-                         guint        indent)
+gsk_gpu_border_op_print_instance (GskGpuShaderOp *shader,
+                                  gpointer        instance_,
+                                  GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuBorderInstance *instance;
+  GskGpuBorderInstance *instance = (GskGpuBorderInstance *) instance_;
 
-  instance = (GskGpuBorderInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "border");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rounded_rect (string, instance->outline);
 
   gsk_gpu_print_rgba (string, (const float *) &instance->border_colors[0]);
@@ -58,8 +52,6 @@ gsk_gpu_border_op_print (GskGpuOp    *op,
                               instance->border_widths[2],
                               instance->border_widths[3]);
     }
-
-  gsk_gpu_print_newline (string);
 }
 
 #ifdef GDK_RENDERING_VULKAN
@@ -85,7 +77,7 @@ static const GskGpuShaderOpClass GSK_GPU_BORDER_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuBorderOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_border_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_border_op_vk_command,
 #endif
@@ -96,6 +88,7 @@ static const GskGpuShaderOpClass GSK_GPU_BORDER_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_border_info,
 #endif
+  gsk_gpu_border_op_print_instance,
   gsk_gpu_border_setup_attrib_locations,
   gsk_gpu_border_setup_vao
 };

gsk/gpu/gskgpuboxshadowop.c

@@ -20,24 +20,17 @@ struct _GskGpuBoxShadowOp
 };
 
 static void
-gsk_gpu_box_shadow_op_print (GskGpuOp    *op,
-                             GskGpuFrame *frame,
-                             GString     *string,
-                             guint        indent)
+gsk_gpu_box_shadow_op_print_instance (GskGpuShaderOp *shader,
+                                      gpointer        instance_,
+                                      GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuBoxshadowInstance *instance;
+  GskGpuBoxshadowInstance *instance = (GskGpuBoxshadowInstance *) instance_;
 
-  instance = (GskGpuBoxshadowInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, shader->variation & VARIATION_INSET ? "inset-shadow" : "outset-shadow");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rounded_rect (string, instance->outline);
   gsk_gpu_print_rgba (string, instance->color);
   g_string_append_printf (string, "%g %g %g %g ",
                           instance->shadow_offset[0], instance->shadow_offset[1],
                           instance->blur_radius, instance->shadow_spread);
-  gsk_gpu_print_newline (string);
 }
 
 #ifdef GDK_RENDERING_VULKAN
@@ -63,7 +56,7 @@ static const GskGpuShaderOpClass GSK_GPU_BOX_SHADOW_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuBoxShadowOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_box_shadow_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_box_shadow_op_vk_command,
 #endif
@@ -74,6 +67,7 @@ static const GskGpuShaderOpClass GSK_GPU_BOX_SHADOW_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_boxshadow_info,
 #endif
+  gsk_gpu_box_shadow_op_print_instance,
   gsk_gpu_boxshadow_setup_attrib_locations,
   gsk_gpu_boxshadow_setup_vao
 };

gsk/gpu/gskgpubuffer.c

@@ -2,6 +2,8 @@
 
 #include "gskgpubufferprivate.h"
 
+#include <gdk/gdkprofilerprivate.h>
+
 typedef struct _GskGpuBufferPrivate GskGpuBufferPrivate;
 
 struct _GskGpuBufferPrivate
@@ -11,9 +13,13 @@ struct _GskGpuBufferPrivate
 
 G_DEFINE_TYPE_WITH_PRIVATE (GskGpuBuffer, gsk_gpu_buffer, G_TYPE_OBJECT)
 
+static guint profiler_buffer_uploads_id;
+static gint64 profiler_buffer_uploads;
+
 static void
 gsk_gpu_buffer_class_init (GskGpuBufferClass *klass)
 {
+  profiler_buffer_uploads_id = gdk_profiler_define_int_counter ("ngl-buffer-uploads", "Number of bytes uploaded to GPU");
 }
 
 static void
@@ -29,7 +35,7 @@ gsk_gpu_buffer_setup (GskGpuBuffer *self,
 
   priv->size = size;
 }
-                     
+
 gsize
 gsk_gpu_buffer_get_size (GskGpuBuffer *self)
 {
@@ -49,5 +55,8 @@ gsk_gpu_buffer_unmap (GskGpuBuffer *self,
                       gsize         size)
 {
   GSK_GPU_BUFFER_GET_CLASS (self)->unmap (self, size);
+
+  profiler_buffer_uploads += size;
+  gdk_profiler_set_int_counter (profiler_buffer_uploads_id, profiler_buffer_uploads);
 }
 

gsk/gpu/gskgpucolorizeop.c

@@ -16,22 +16,15 @@ struct _GskGpuColorizeOp
 };
 
 static void
-gsk_gpu_colorize_op_print (GskGpuOp    *op,
-                           GskGpuFrame *frame,
-                           GString     *string,
-                           guint        indent)
+gsk_gpu_colorize_op_print_instance (GskGpuShaderOp *shader,
+                                    gpointer        instance_,
+                                    GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuColorizeInstance *instance;
+  GskGpuColorizeInstance *instance = (GskGpuColorizeInstance *) instance_;
 
-  instance = (GskGpuColorizeInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "colorize");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->tex_id);
   gsk_gpu_print_rgba (string, instance->color);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_COLORIZE_OP_CLASS = {
@@ -39,7 +32,7 @@ static const GskGpuShaderOpClass GSK_GPU_COLORIZE_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuColorizeOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_colorize_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -50,6 +43,7 @@ static const GskGpuShaderOpClass GSK_GPU_COLORIZE_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_colorize_info,
 #endif
+  gsk_gpu_colorize_op_print_instance,
   gsk_gpu_colorize_setup_attrib_locations,
   gsk_gpu_colorize_setup_vao
 };

gsk/gpu/gskgpucolormatrixop.c

@@ -16,21 +16,14 @@ struct _GskGpuColorMatrixOp
 };
 
 static void
-gsk_gpu_color_matrix_op_print (GskGpuOp    *op,
-                               GskGpuFrame *frame,
-                               GString     *string,
-                               guint        indent)
+gsk_gpu_color_matrix_op_print_instance (GskGpuShaderOp *shader,
+                                        gpointer        instance_,
+                                        GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuColormatrixInstance *instance;
+  GskGpuColormatrixInstance *instance = (GskGpuColormatrixInstance *) instance_;
 
-  instance = (GskGpuColormatrixInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "color-matrix");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->tex_id);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_COLOR_MATRIX_OP_CLASS = {
@@ -38,7 +31,7 @@ static const GskGpuShaderOpClass GSK_GPU_COLOR_MATRIX_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuColorMatrixOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_color_matrix_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -49,6 +42,7 @@ static const GskGpuShaderOpClass GSK_GPU_COLOR_MATRIX_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_colormatrix_info,
 #endif
+  gsk_gpu_color_matrix_op_print_instance,
   gsk_gpu_colormatrix_setup_attrib_locations,
   gsk_gpu_colormatrix_setup_vao
 };

gsk/gpu/gskgpucolorop.c

@@ -17,21 +17,14 @@ struct _GskGpuColorOp
 };
 
 static void
-gsk_gpu_color_op_print (GskGpuOp    *op,
-                        GskGpuFrame *frame,
-                        GString     *string,
-                        guint        indent)
+gsk_gpu_color_op_print_instance (GskGpuShaderOp *shader,
+                                 gpointer        instance_,
+                                 GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuColorInstance *instance;
+  GskGpuColorInstance *instance = (GskGpuColorInstance *) instance_;
 
-  instance = (GskGpuColorInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "color");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_rgba (string, instance->color);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_COLOR_OP_CLASS = {
@@ -39,7 +32,7 @@ static const GskGpuShaderOpClass GSK_GPU_COLOR_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuColorOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_color_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -50,6 +43,7 @@ static const GskGpuShaderOpClass GSK_GPU_COLOR_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_color_info,
 #endif
+  gsk_gpu_color_op_print_instance,
   gsk_gpu_color_setup_attrib_locations,
   gsk_gpu_color_setup_vao
 };

gsk/gpu/gskgpuconicgradientop.c

@@ -18,20 +18,13 @@ struct _GskGpuConicGradientOp
 };
 
 static void
-gsk_gpu_conic_gradient_op_print (GskGpuOp    *op,
-                                 GskGpuFrame *frame,
-                                 GString     *string,
-                                 guint        indent)
+gsk_gpu_conic_gradient_op_print_instance (GskGpuShaderOp *shader,
+                                          gpointer        instance_,
+                                          GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuConicgradientInstance *instance;
+  GskGpuConicgradientInstance *instance = (GskGpuConicgradientInstance *) instance_;
 
-  instance = (GskGpuConicgradientInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "conic-gradient");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_CONIC_GRADIENT_OP_CLASS = {
@@ -39,7 +32,7 @@ static const GskGpuShaderOpClass GSK_GPU_CONIC_GRADIENT_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuConicGradientOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_conic_gradient_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -50,6 +43,7 @@ static const GskGpuShaderOpClass GSK_GPU_CONIC_GRADIENT_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_conicgradient_info,
 #endif
+  gsk_gpu_conic_gradient_op_print_instance,
   gsk_gpu_conicgradient_setup_attrib_locations,
   gsk_gpu_conicgradient_setup_vao
 };

gsk/gpu/gskgpucrossfadeop.c

@@ -16,23 +16,16 @@ struct _GskGpuCrossFadeOp
 };
 
 static void
-gsk_gpu_cross_fade_op_print (GskGpuOp    *op,
-                             GskGpuFrame *frame,
-                             GString     *string,
-                             guint        indent)
+gsk_gpu_cross_fade_op_print_instance (GskGpuShaderOp *shader,
+                                      gpointer        instance_,
+                                      GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuCrossfadeInstance *instance;
+  GskGpuCrossfadeInstance *instance = (GskGpuCrossfadeInstance *) instance_;
 
-  instance = (GskGpuCrossfadeInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "cross-fade");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->start_id);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->end_id);
   g_string_append_printf (string, "%g%%", 100 * instance->opacity_progress[1]);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_CROSS_FADE_OP_CLASS = {
@@ -40,7 +33,7 @@ static const GskGpuShaderOpClass GSK_GPU_CROSS_FADE_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuCrossFadeOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_cross_fade_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -51,6 +44,7 @@ static const GskGpuShaderOpClass GSK_GPU_CROSS_FADE_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_crossfade_info,
 #endif
+  gsk_gpu_cross_fade_op_print_instance,
   gsk_gpu_crossfade_setup_attrib_locations,
   gsk_gpu_crossfade_setup_vao
 };

gsk/gpu/gskgpudevice.c

@@ -918,12 +918,7 @@ gsk_gpu_device_lookup_glyph_image (GskGpuDevice           *self,
       return cache->image;
     }
 
-  /* Note: we want to scale the font to the required size *and* ensure that
-   * metrics hinting is off. The latter is necessary since pango lets metrics
-   * hinting influence the rendering of hexboxes, and we get bad outcomes if
-   * that happens.
-   */
-  scaled_font = gsk_reload_font (font, scale, CAIRO_HINT_METRICS_OFF, CAIRO_HINT_STYLE_DEFAULT, CAIRO_ANTIALIAS_DEFAULT);
+  scaled_font = gsk_reload_font (font, scale, CAIRO_HINT_METRICS_DEFAULT, CAIRO_HINT_STYLE_DEFAULT, CAIRO_ANTIALIAS_DEFAULT);
 
   subpixel_x = (flags & 3) / 4.f;
   subpixel_y = ((flags >> 2) & 3) / 4.f;

gsk/gpu/gskgpudownloadop.c

@@ -272,7 +272,7 @@ gsk_gpu_download_op_gl_command (GskGpuOp          *op,
   data->context = g_object_ref (context);
   data->texture_id = gsk_gl_image_steal_texture (GSK_GL_IMAGE (self->image));
 
-  if (gdk_gl_context_has_sync (context))
+  if (gdk_gl_context_has_feature (context, GDK_GL_FEATURE_SYNC))
     data->sync = glFenceSync (GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
 
   builder = gdk_gl_texture_builder_new ();

gsk/gpu/gskgpuframe.c

@@ -40,6 +40,7 @@ struct _GskGpuFramePrivate
 
   GskGpuOps ops;
   GskGpuOp *first_op;
+  GskGpuOp *last_op;
 
   GskGpuBuffer *vertex_buffer;
   guchar *vertex_buffer_data;
@@ -70,6 +71,8 @@ gsk_gpu_frame_default_cleanup (GskGpuFrame *self)
       gsk_gpu_op_finish (op);
     }
   gsk_gpu_ops_set_size (&priv->ops, 0);
+
+  priv->last_op = NULL;
 }
 
 static void
@@ -248,27 +251,35 @@ gsk_gpu_frame_sort_render_pass (GskGpuFrame *self,
                                 SortData    *sort_data)
 {
   SortData subpasses = { { NULL, NULL }, { NULL, NULL } };
+  SortData pass = { { NULL, NULL }, { NULL, NULL } };
+
+  if (op->op_class->stage == GSK_GPU_STAGE_BEGIN_PASS)
+    {
+      pass.command.first = op;
+      pass.command.last = op;
+      op = op->next;
+    }
 
   while (op)
     {
       switch (op->op_class->stage)
       {
         case GSK_GPU_STAGE_UPLOAD:
-          if (sort_data->upload.first == NULL)
-            sort_data->upload.first = op;
+          if (pass.upload.first == NULL)
+            pass.upload.first = op;
           else
-            sort_data->upload.last->next = op;
-          sort_data->upload.last = op;
+            pass.upload.last->next = op;
+          pass.upload.last = op;
           op = op->next;
           break;
 
         case GSK_GPU_STAGE_COMMAND:
         case GSK_GPU_STAGE_SHADER:
-          if (sort_data->command.first == NULL)
-            sort_data->command.first = op;
+          if (pass.command.first == NULL)
+            pass.command.first = op;
           else
-            sort_data->command.last->next = op;
-          sort_data->command.last = op;
+            pass.command.last->next = op;
+          pass.command.last = op;
           op = op->next;
           break;
 
@@ -282,19 +293,13 @@ gsk_gpu_frame_sort_render_pass (GskGpuFrame *self,
           break;
 
         case GSK_GPU_STAGE_BEGIN_PASS:
-          if (subpasses.command.first == NULL)
-            subpasses.command.first = op;
-          else
-            subpasses.command.last->next = op;
-          subpasses.command.last = op;
-
           /* append subpass to existing subpasses */
-          op = gsk_gpu_frame_sort_render_pass (self, op->next, &subpasses);
+          op = gsk_gpu_frame_sort_render_pass (self, op, &subpasses);
           break;
 
         case GSK_GPU_STAGE_END_PASS:
-          sort_data->command.last->next = op;
-          sort_data->command.last = op;
+          pass.command.last->next = op;
+          pass.command.last = op;
           op = op->next;
           goto out;
 
@@ -305,22 +310,38 @@ gsk_gpu_frame_sort_render_pass (GskGpuFrame *self,
     }
 
 out:
-  /* prepend subpasses to the current pass */
+  /* append to the sort data, first the subpasses, then the current pass */
   if (subpasses.upload.first)
     {
       if (sort_data->upload.first != NULL)
-        subpasses.upload.last->next = sort_data->upload.first;
+        sort_data->upload.last->next = subpasses.upload.first;
       else
-        sort_data->upload.last = subpasses.upload.last;
-      sort_data->upload.first = subpasses.upload.first;
+        sort_data->upload.first = subpasses.upload.first;
+      sort_data->upload.last = subpasses.upload.last;
+    }
+  if (pass.upload.first)
+    {
+      if (sort_data->upload.first != NULL)
+        sort_data->upload.last->next = pass.upload.first;
+      else
+        sort_data->upload.first = pass.upload.first;
+      sort_data->upload.last = pass.upload.last;
     }
   if (subpasses.command.first)
     {
       if (sort_data->command.first != NULL)
-        subpasses.command.last->next = sort_data->command.first;
+        sort_data->command.last->next = subpasses.command.first;
       else
-        sort_data->command.last = subpasses.command.last;
-      sort_data->command.first = subpasses.command.first;
+        sort_data->command.first = subpasses.command.first;
+      sort_data->command.last = subpasses.command.last;
+    }
+  if (pass.command.first)
+    {
+      if (sort_data->command.first != NULL)
+        sort_data->command.last->next = pass.command.first;
+      else
+        sort_data->command.first = pass.command.first;
+      sort_data->command.last = pass.command.last;
     }
 
   return op;
@@ -331,8 +352,13 @@ gsk_gpu_frame_sort_ops (GskGpuFrame *self)
 {
   GskGpuFramePrivate *priv = gsk_gpu_frame_get_instance_private (self);
   SortData sort_data = { { NULL, }, };
-  
-  gsk_gpu_frame_sort_render_pass (self, priv->first_op, &sort_data);
+  GskGpuOp *op;
+
+  op = priv->first_op;
+  while (op)
+    {
+      op = gsk_gpu_frame_sort_render_pass (self, op, &sort_data);
+    }
 
   if (sort_data.upload.first)
     {
@@ -343,6 +369,8 @@ gsk_gpu_frame_sort_ops (GskGpuFrame *self)
     priv->first_op = sort_data.command.first;
   if (sort_data.command.last)
     sort_data.command.last->next = NULL;
+
+  priv->last_op = NULL;
 }
 
 gpointer
@@ -360,7 +388,17 @@ gsk_gpu_frame_alloc_op (GskGpuFrame *self,
                       NULL,
                       size);
 
-  return gsk_gpu_ops_index (&priv->ops, pos);
+  priv->last_op = (GskGpuOp *) gsk_gpu_ops_index (&priv->ops, pos);
+
+  return priv->last_op;
+}
+
+GskGpuOp *
+gsk_gpu_frame_get_last_op (GskGpuFrame *self)
+{
+  GskGpuFramePrivate *priv = gsk_gpu_frame_get_instance_private (self);
+
+  return priv->last_op;
 }
 
 GskGpuImage *
@@ -505,6 +543,12 @@ gsk_gpu_frame_is_busy (GskGpuFrame *self)
   return GSK_GPU_FRAME_GET_CLASS (self)->is_busy (self);
 }
 
+void
+gsk_gpu_frame_wait (GskGpuFrame *self)
+{
+  GSK_GPU_FRAME_GET_CLASS (self)->wait (self);
+}
+
 static void
 copy_texture (gpointer    user_data,
               GdkTexture *texture)

gsk/gpu/gskgpuframeprivate.h

@@ -24,6 +24,7 @@ struct _GskGpuFrameClass
   GObjectClass parent_class;
 
   gboolean              (* is_busy)                                     (GskGpuFrame            *self);
+  void                  (* wait)                                        (GskGpuFrame            *self);
   void                  (* setup)                                       (GskGpuFrame            *self);
   void                  (* cleanup)                                     (GskGpuFrame            *self);
   GskGpuImage *         (* upload_texture)                              (GskGpuFrame            *self,
@@ -69,6 +70,7 @@ GskGpuBuffer *          gsk_gpu_frame_write_storage_buffer              (GskGpuF
                                                                          gsize                  *out_offset);
 
 gboolean                gsk_gpu_frame_is_busy                           (GskGpuFrame            *self);
+void                    gsk_gpu_frame_wait                              (GskGpuFrame            *self);
 
 void                    gsk_gpu_frame_render                            (GskGpuFrame            *self,
                                                                          gint64                  timestamp,
@@ -83,6 +85,7 @@ void                    gsk_gpu_frame_download_texture                  (GskGpuF
                                                                          GdkMemoryFormat         format,
                                                                          guchar                 *data,
                                                                          gsize                   stride);
+GskGpuOp               *gsk_gpu_frame_get_last_op                       (GskGpuFrame            *self);
 
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskGpuFrame, g_object_unref)
 

gsk/gpu/gskgpulineargradientop.c

@@ -19,23 +19,15 @@ struct _GskGpuLinearGradientOp
 };
 
 static void
-gsk_gpu_linear_gradient_op_print (GskGpuOp    *op,
-                                  GskGpuFrame *frame,
-                                  GString     *string,
-                                  guint        indent)
+gsk_gpu_linear_gradient_op_print_instance (GskGpuShaderOp *shader,
+                                           gpointer        instance_,
+                                           GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuLineargradientInstance *instance;
-
-  instance = (GskGpuLineargradientInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
+  GskGpuLineargradientInstance *instance = (GskGpuLineargradientInstance *) instance_;
 
   if (shader->variation & VARIATION_REPEATING)
-    gsk_gpu_print_op (string, indent, "repeating-linear-gradient");
-  else
-    gsk_gpu_print_op (string, indent, "linear-gradient");
-  gsk_gpu_print_shader_info (string, shader->clip);
+    gsk_gpu_print_string (string, "repeating");
   gsk_gpu_print_rect (string, instance->rect);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_LINEAR_GRADIENT_OP_CLASS = {
@@ -43,7 +35,7 @@ static const GskGpuShaderOpClass GSK_GPU_LINEAR_GRADIENT_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuLinearGradientOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_linear_gradient_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -54,6 +46,7 @@ static const GskGpuShaderOpClass GSK_GPU_LINEAR_GRADIENT_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_lineargradient_info,
 #endif
+  gsk_gpu_linear_gradient_op_print_instance,
   gsk_gpu_lineargradient_setup_attrib_locations,
   gsk_gpu_lineargradient_setup_vao
 };

gsk/gpu/gskgpumaskop.c

@@ -16,22 +16,15 @@ struct _GskGpuMaskOp
 };
 
 static void
-gsk_gpu_mask_op_print (GskGpuOp    *op,
-                       GskGpuFrame *frame,
-                       GString     *string,
-                       guint        indent)
+gsk_gpu_mask_op_print_instance (GskGpuShaderOp *shader,
+                                gpointer        instance_,
+                                GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuMaskInstance *instance;
+  GskGpuMaskInstance *instance = (GskGpuMaskInstance *) instance_;
 
-  instance = (GskGpuMaskInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "mask");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->source_id);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->mask_id);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_MASK_OP_CLASS = {
@@ -39,7 +32,7 @@ static const GskGpuShaderOpClass GSK_GPU_MASK_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuMaskOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_mask_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -50,6 +43,7 @@ static const GskGpuShaderOpClass GSK_GPU_MASK_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_mask_info,
 #endif
+  gsk_gpu_mask_op_print_instance,
   gsk_gpu_mask_setup_attrib_locations,
   gsk_gpu_mask_setup_vao
 };

gsk/gpu/gskgpunodeprocessor.c

@@ -36,7 +36,6 @@
 #include "gskdebugprivate.h"
 #include "gskpath.h"
 #include "gskrectprivate.h"
-#include "gskvec2private.h"
 #include "gskrendernodeprivate.h"
 #include "gskroundedrectprivate.h"
 #include "gskstrokeprivate.h"
@@ -196,9 +195,9 @@ gsk_gpu_node_processor_init (GskGpuNodeProcessor         *self,
 
   self->modelview = NULL;
   gsk_gpu_image_get_projection_matrix (target, &self->projection);
-  gsk_vec2_init (&self->scale,
-                 width / viewport->size.width,
-                 height / viewport->size.height);
+  graphene_vec2_init (&self->scale,
+                      width / viewport->size.width,
+                      height / viewport->size.height);
   self->offset = GRAPHENE_POINT_INIT (-viewport->origin.x,
                                       -viewport->origin.y);
   self->opacity = 1.0;
@@ -320,8 +319,8 @@ rect_round_to_pixels (const graphene_rect_t  *src,
 {
   float x, y, xscale, yscale, inv_xscale, inv_yscale;
 
-  xscale = gsk_vec2_get_x (pixel_scale);
-  yscale = gsk_vec2_get_y (pixel_scale);
+  xscale = graphene_vec2_get_x (pixel_scale);
+  yscale = graphene_vec2_get_y (pixel_scale);
   inv_xscale = 1.0f / xscale;
   inv_yscale = 1.0f / yscale;
 
@@ -346,8 +345,8 @@ gsk_gpu_node_processor_init_draw (GskGpuNodeProcessor   *self,
 
   area.x = 0;
   area.y = 0;
-  area.width = ceilf (gsk_vec2_get_x (scale) * viewport->size.width - EPSILON);
-  area.height = ceilf (gsk_vec2_get_y (scale) * viewport->size.height - EPSILON);
+  area.width = ceilf (graphene_vec2_get_x (scale) * viewport->size.width - EPSILON);
+  area.height = ceilf (graphene_vec2_get_y (scale) * viewport->size.height - EPSILON);
 
   image = gsk_gpu_device_create_offscreen_image (gsk_gpu_frame_get_device (frame),
                                                  FALSE,
@@ -630,8 +629,8 @@ gsk_gpu_node_processor_rect_is_integer (GskGpuNodeProcessor   *self,
                                         cairo_rectangle_int_t *int_rect)
 {
   graphene_rect_t transformed_rect;
-  float scale_x = gsk_vec2_get_x (&self->scale);
-  float scale_y = gsk_vec2_get_y (&self->scale);
+  float scale_x = graphene_vec2_get_x (&self->scale);
+  float scale_y = graphene_vec2_get_y (&self->scale);
 
   switch (gsk_transform_get_category (self->modelview))
     {
@@ -1031,7 +1030,7 @@ gsk_gpu_node_processor_blur_op (GskGpuNodeProcessor       *self,
 
   gsk_gpu_node_processor_sync_globals (&other, 0);
 
-  gsk_vec2_init (&direction, blur_radius, 0.0f);
+  graphene_vec2_init (&direction, blur_radius, 0.0f);
   gsk_gpu_blur_op (other.frame,
                    gsk_gpu_clip_get_shader_clip (&other.clip, &other.offset, &intermediate_rect),
                    source_desc,
@@ -1045,7 +1044,7 @@ gsk_gpu_node_processor_blur_op (GskGpuNodeProcessor       *self,
 
   real_offset = GRAPHENE_POINT_INIT (self->offset.x + shadow_offset->x,
                                      self->offset.y + shadow_offset->y);
-  gsk_vec2_init (&direction, 0.0f, blur_radius);
+  graphene_vec2_init (&direction, 0.0f, blur_radius);
   intermediate_descriptor = gsk_gpu_node_processor_add_image (self, intermediate, GSK_GPU_SAMPLER_TRANSPARENT);
   if (shadow_color)
     {
@@ -1582,8 +1581,8 @@ gsk_gpu_node_processor_add_transform_node (GskGpuNodeProcessor *self,
         gsk_gpu_clip_scale (&self->clip, &old_clip, scale_x, scale_y);
         self->offset.x = (self->offset.x + dx) / scale_x;
         self->offset.y = (self->offset.y + dy) / scale_y;
-        gsk_vec2_init (&self->scale, fabs (scale_x), fabs (scale_y));
-        gsk_vec2_multiply (&self->scale, &old_scale, &self->scale);
+        graphene_vec2_init (&self->scale, fabs (scale_x), fabs (scale_y));
+        graphene_vec2_multiply (&self->scale, &old_scale, &self->scale);
         self->modelview = gsk_transform_scale (self->modelview,
                                                scale_x / fabs (scale_x),
                                                scale_y / fabs (scale_y));
@@ -1643,15 +1642,15 @@ gsk_gpu_node_processor_add_transform_node (GskGpuNodeProcessor *self,
         old_modelview = gsk_transform_ref (self->modelview);
 
         self->modelview = gsk_transform_scale (self->modelview,
-                                               gsk_vec2_get_x (&self->scale),
-                                               gsk_vec2_get_y (&self->scale));
+                                               graphene_vec2_get_x (&self->scale),
+                                               graphene_vec2_get_y (&self->scale));
         self->modelview = gsk_transform_transform (self->modelview, clip_transform);
         gsk_transform_unref (clip_transform);
 
         extract_scale_from_transform (self->modelview, &scale_x, &scale_y);
 
-        old_pixels = MAX (gsk_vec2_get_x (&old_scale) * old_clip.rect.bounds.size.width,
-                          gsk_vec2_get_y (&old_scale) * old_clip.rect.bounds.size.height);
+        old_pixels = MAX (graphene_vec2_get_x (&old_scale) * old_clip.rect.bounds.size.width,
+                          graphene_vec2_get_y (&old_scale) * old_clip.rect.bounds.size.height);
         new_pixels = MAX (scale_x * self->clip.rect.bounds.size.width,
                           scale_y * self->clip.rect.bounds.size.height);
 
@@ -1664,7 +1663,7 @@ gsk_gpu_node_processor_add_transform_node (GskGpuNodeProcessor *self,
           }
 
         self->modelview = gsk_transform_scale (self->modelview, 1 / scale_x, 1 / scale_y);
-        gsk_vec2_init (&self->scale, scale_x, scale_y);
+        graphene_vec2_init (&self->scale, scale_x, scale_y);
         self->offset = *graphene_point_zero ();
       }
       break;
@@ -1736,8 +1735,8 @@ gsk_gpu_node_processor_create_transform_pattern (GskGpuPatternWriter *self,
         self->bounds.size.width *= inv_sx;
         self->bounds.size.height *= inv_sy;
         self->offset = GRAPHENE_POINT_INIT (0, 0);
-        gsk_vec2_init (&self->scale, fabs (sx), fabs (sy));
-        gsk_vec2_multiply (&self->scale, &old_scale, &self->scale);
+        graphene_vec2_init (&self->scale, fabs (sx), fabs (sy));
+        graphene_vec2_multiply (&self->scale, &old_scale, &self->scale);
       }
       break;
 
@@ -1821,8 +1820,8 @@ gsk_gpu_node_processor_add_color_node (GskGpuNodeProcessor *self,
               return;
             }
 
-          scale_x = gsk_vec2_get_x (&self->scale);
-          scale_y = gsk_vec2_get_y (&self->scale);
+          scale_x = graphene_vec2_get_x (&self->scale);
+          scale_y = graphene_vec2_get_y (&self->scale);
           clipped = GRAPHENE_RECT_INIT (int_clipped.x / scale_x, int_clipped.y / scale_y,
                                         int_clipped.width / scale_x, int_clipped.height / scale_y);
           shader_clip = gsk_gpu_clip_get_shader_clip (&self->clip, graphene_point_zero(), &clipped);
@@ -1949,8 +1948,8 @@ gsk_gpu_node_processor_add_texture_node (GskGpuNodeProcessor *self,
     }
 
   if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_MIPMAP) &&
-      (gdk_texture_get_width (texture) > 2 * node->bounds.size.width * gsk_vec2_get_x (&self->scale) ||
-       gdk_texture_get_height (texture) > 2 * node->bounds.size.height * gsk_vec2_get_y (&self->scale)))
+      (gdk_texture_get_width (texture) > 2 * node->bounds.size.width * graphene_vec2_get_x (&self->scale) ||
+       gdk_texture_get_height (texture) > 2 * node->bounds.size.height * graphene_vec2_get_y (&self->scale)))
     {
       guint32 descriptor;
 
@@ -2016,8 +2015,8 @@ gsk_gpu_node_processor_create_texture_pattern (GskGpuPatternWriter *self,
     }
 
   if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_MIPMAP) &&
-      (gdk_texture_get_width (texture) > 2 * node->bounds.size.width * gsk_vec2_get_x (&self->scale) ||
-       gdk_texture_get_height (texture) > 2 * node->bounds.size.height * gsk_vec2_get_y (&self->scale)))
+      (gdk_texture_get_width (texture) > 2 * node->bounds.size.width * graphene_vec2_get_x (&self->scale) ||
+       gdk_texture_get_height (texture) > 2 * node->bounds.size.height * graphene_vec2_get_y (&self->scale)))
     {
       image = gsk_gpu_node_processor_ensure_image (self->frame,
                                                    image,
@@ -2061,7 +2060,7 @@ gsk_gpu_node_processor_add_texture_scale_node (GskGpuNodeProcessor *self,
   gboolean need_mipmap, need_offscreen;
 
   need_offscreen = self->modelview != NULL ||
-                   gsk_vec2_equal (&self->scale, graphene_vec2_one ());
+            !graphene_vec2_equal (&self->scale, graphene_vec2_one ());
   if (need_offscreen)
     {
       GskGpuImage *offscreen;
@@ -3001,8 +3000,12 @@ gsk_gpu_node_processor_add_glyph_node (GskGpuNodeProcessor *self,
   guint i, num_glyphs;
   float scale, inv_scale;
   GdkRGBA color;
-  gboolean glyph_align;
-  gboolean hinting;
+  float align_scale_x, align_scale_y;
+  float inv_align_scale_x, inv_align_scale_y;
+  unsigned int flags_mask;
+  GskGpuImage *last_image;
+  guint32 descriptor;
+  const float inv_pango_scale = 1.f / PANGO_SCALE;
 
   if (self->opacity < 1.0 &&
       gsk_text_node_has_color_glyphs (node))
@@ -3022,48 +3025,41 @@ gsk_gpu_node_processor_add_glyph_node (GskGpuNodeProcessor *self,
   offset.x += self->offset.x;
   offset.y += self->offset.y;
 
-  scale = MAX (gsk_vec2_get_x (&self->scale), gsk_vec2_get_y (&self->scale));
+  scale = MAX (graphene_vec2_get_x (&self->scale), graphene_vec2_get_y (&self->scale));
   inv_scale = 1.f / scale;
 
-  glyph_align = gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_GLYPH_ALIGN);
-  hinting = gsk_font_get_hint_style (font) != CAIRO_HINT_STYLE_NONE;
+  if (gsk_font_get_hint_style (font) != CAIRO_HINT_STYLE_NONE)
+    {
+      align_scale_x = scale * 4;
+      align_scale_y = scale;
+      flags_mask = 3;
+    }
+  else
+    {
+      align_scale_x = align_scale_y = scale * 4;
+      flags_mask = 15;
+    }
 
+  inv_align_scale_x = 1 / align_scale_x;
+  inv_align_scale_y = 1 / align_scale_y;
+
+  last_image = NULL;
+  descriptor = 0;
   for (i = 0; i < num_glyphs; i++)
     {
       GskGpuImage *image;
       graphene_rect_t glyph_bounds, glyph_tex_rect;
       graphene_point_t glyph_offset, glyph_origin;
-      guint32 descriptor;
       GskGpuGlyphLookupFlags flags;
 
-      glyph_origin = GRAPHENE_POINT_INIT (offset.x + (float) glyphs[i].geometry.x_offset / PANGO_SCALE,
-                                          offset.y + (float) glyphs[i].geometry.y_offset / PANGO_SCALE);
+      glyph_origin = GRAPHENE_POINT_INIT (offset.x + glyphs[i].geometry.x_offset * inv_pango_scale,
+                                          offset.y + glyphs[i].geometry.y_offset * inv_pango_scale);
 
-      if (hinting && glyph_align)
-        {
-          /* Force glyph_origin.y to be device pixel aligned.
-           * The hinter expects that.
-           */
-          glyph_origin.x = floor (glyph_origin.x * scale * 4 + .5);
-          flags = ((int) glyph_origin.x & 3);
-          glyph_origin.x = 0.25 * inv_scale * glyph_origin.x;
-          glyph_origin.y = floor (glyph_origin.y * scale + .5) * inv_scale;
-        }
-      else if (glyph_align)
-        {
-          glyph_origin.x = floor (glyph_origin.x * scale * 4 + .5);
-          glyph_origin.y = floor (glyph_origin.y * scale * 4 + .5);
-          flags = ((int) glyph_origin.x & 3) |
-                  (((int) glyph_origin.y & 3) << 2);
-          glyph_origin.x = 0.25 * inv_scale * glyph_origin.x;
-          glyph_origin.y = 0.25 * inv_scale * glyph_origin.y;
-        }
-      else
-        {
-          glyph_origin.x = floor (glyph_origin.x * scale + .5) * inv_scale;
-          glyph_origin.y = floor (glyph_origin.y * scale + .5) * inv_scale;
-          flags = 0;
-        }
+      glyph_origin.x = floorf (glyph_origin.x * align_scale_x + 0.5f);
+      glyph_origin.y = floorf (glyph_origin.y * align_scale_y + 0.5f);
+      flags = (((int) glyph_origin.x & 3) | (((int) glyph_origin.y & 3) << 2)) & flags_mask;
+      glyph_origin.x *= inv_align_scale_x;
+      glyph_origin.y *= inv_align_scale_y;
 
       image = gsk_gpu_device_lookup_glyph_image (device,
                                                  self->frame,
@@ -3085,7 +3081,11 @@ gsk_gpu_node_processor_add_glyph_node (GskGpuNodeProcessor *self,
       glyph_origin = GRAPHENE_POINT_INIT (glyph_origin.x - glyph_offset.x * inv_scale,
                                           glyph_origin.y - glyph_offset.y * inv_scale);
 
-      descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
+      if (image != last_image)
+        {
+          descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
+          last_image = image;
+        }
 
       if (glyphs[i].attr.is_color)
         gsk_gpu_texture_op (self->frame,
@@ -3105,7 +3105,7 @@ gsk_gpu_node_processor_add_glyph_node (GskGpuNodeProcessor *self,
                              &glyph_tex_rect,
                              &color);
 
-      offset.x += (float) glyphs[i].geometry.width / PANGO_SCALE;
+      offset.x += glyphs[i].geometry.width * inv_pango_scale;
     }
 }
 
@@ -3122,8 +3122,10 @@ gsk_gpu_node_processor_create_glyph_pattern (GskGpuPatternWriter *self,
   guint32 tex_id;
   GskGpuImage *last_image;
   graphene_point_t offset;
-  gboolean glyph_align;
-  gboolean hinting;
+  float align_scale_x, align_scale_y;
+  float inv_align_scale_x, inv_align_scale_y;
+  unsigned int flags_mask;
+  const float inv_pango_scale = 1.f / PANGO_SCALE;
 
   if (gsk_text_node_has_color_glyphs (node))
     return FALSE;
@@ -3136,15 +3138,27 @@ gsk_gpu_node_processor_create_glyph_pattern (GskGpuPatternWriter *self,
   offset.x += self->offset.x;
   offset.y += self->offset.y;
 
-  scale = MAX (gsk_vec2_get_x (&self->scale), gsk_vec2_get_y (&self->scale));
+  scale = MAX (graphene_vec2_get_x (&self->scale), graphene_vec2_get_y (&self->scale));
   inv_scale = 1.f / scale;
 
   gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_GLYPHS);
   gsk_gpu_pattern_writer_append_rgba (self, gsk_text_node_get_color (node));
   gsk_gpu_pattern_writer_append_uint (self, num_glyphs);
 
-  glyph_align = gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_GLYPH_ALIGN);
-  hinting = gsk_font_get_hint_style (font) != CAIRO_HINT_STYLE_NONE;
+  if (gsk_font_get_hint_style (font) != CAIRO_HINT_STYLE_NONE)
+    {
+      align_scale_x = scale * 4;
+      align_scale_y = scale;
+      flags_mask = 3;
+    }
+  else
+    {
+      align_scale_x = align_scale_y = scale * 4;
+      flags_mask = 15;
+    }
+
+  inv_align_scale_x = 1 / align_scale_x;
+  inv_align_scale_y = 1 / align_scale_y;
 
   last_image = NULL;
   for (i = 0; i < num_glyphs; i++)
@@ -3154,34 +3168,14 @@ gsk_gpu_node_processor_create_glyph_pattern (GskGpuPatternWriter *self,
       graphene_point_t glyph_offset, glyph_origin;
       GskGpuGlyphLookupFlags flags;
 
-      glyph_origin = GRAPHENE_POINT_INIT (offset.x + (float) glyphs[i].geometry.x_offset / PANGO_SCALE,
-                                          offset.y + (float) glyphs[i].geometry.y_offset / PANGO_SCALE);
+      glyph_origin = GRAPHENE_POINT_INIT (offset.x + glyphs[i].geometry.x_offset * inv_pango_scale,
+                                          offset.y + glyphs[i].geometry.y_offset * inv_pango_scale);
 
-      if (hinting && glyph_align)
-        {
-          /* Force glyph_origin.y to be device pixel aligned.
-           * The hinter expects that.
-           */
-          glyph_origin.x = roundf (glyph_origin.x * scale * 4);
-          flags = ((int) glyph_origin.x & 3);
-          glyph_origin.x = 0.25 * inv_scale * glyph_origin.x;
-          glyph_origin.y = roundf (glyph_origin.y * scale) * inv_scale;
-        }
-      else if (glyph_align)
-        {
-          glyph_origin.x = roundf (glyph_origin.x * scale * 4);
-          glyph_origin.y = roundf (glyph_origin.y * scale * 4);
-          flags = ((int) glyph_origin.x & 3) |
-                  (((int) glyph_origin.y & 3) << 2);
-          glyph_origin.x = 0.25 * inv_scale * glyph_origin.x;
-          glyph_origin.y = 0.25 * inv_scale * glyph_origin.y;
-        }
-      else
-        {
-          glyph_origin.x = roundf (glyph_origin.x * scale) * inv_scale;
-          glyph_origin.y = roundf (glyph_origin.y * scale) * inv_scale;
-          flags = 0;
-        }
+      glyph_origin.x = floorf (glyph_origin.x * align_scale_x + 0.5f);
+      glyph_origin.y = floorf (glyph_origin.y * align_scale_y + 0.5f);
+      flags = (((int) glyph_origin.x & 3) | (((int) glyph_origin.y & 3) << 2)) & flags_mask;
+      glyph_origin.x *= inv_align_scale_x;
+      glyph_origin.y *= inv_align_scale_y;
 
       image = gsk_gpu_device_lookup_glyph_image (device,
                                                  self->frame,
@@ -3221,7 +3215,7 @@ gsk_gpu_node_processor_create_glyph_pattern (GskGpuPatternWriter *self,
                                           ),
                                           &glyph_origin);
 
-      offset.x += (float) glyphs[i].geometry.width / PANGO_SCALE;
+      offset.x += glyphs[i].geometry.width * inv_pango_scale;
     }
 
   return TRUE;

gsk/gpu/gskgpuradialgradientop.c

@@ -19,23 +19,15 @@ struct _GskGpuRadialGradientOp
 };
 
 static void
-gsk_gpu_radial_gradient_op_print (GskGpuOp    *op,
-                                  GskGpuFrame *frame,
-                                  GString     *string,
-                                  guint        indent)
+gsk_gpu_radial_gradient_op_print_instance (GskGpuShaderOp *shader,
+                                           gpointer        instance_,
+                                           GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuRadialgradientInstance *instance;
-
-  instance = (GskGpuRadialgradientInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
+  GskGpuRadialgradientInstance *instance = (GskGpuRadialgradientInstance *) instance_;
 
   if (shader->variation & VARIATION_REPEATING)
-    gsk_gpu_print_op (string, indent, "repeating-radial-gradient");
-  else
-    gsk_gpu_print_op (string, indent, "radial-gradient");
-  gsk_gpu_print_shader_info (string, shader->clip);
+    gsk_gpu_print_string (string, "repeating");
   gsk_gpu_print_rect (string, instance->rect);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_RADIAL_GRADIENT_OP_CLASS = {
@@ -43,7 +35,7 @@ static const GskGpuShaderOpClass GSK_GPU_RADIAL_GRADIENT_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuRadialGradientOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_radial_gradient_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -54,6 +46,7 @@ static const GskGpuShaderOpClass GSK_GPU_RADIAL_GRADIENT_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_radialgradient_info,
 #endif
+  gsk_gpu_radial_gradient_op_print_instance,
   gsk_gpu_radialgradient_setup_attrib_locations,
   gsk_gpu_radialgradient_setup_vao
 };

gsk/gpu/gskgpurenderer.c

@@ -30,9 +30,6 @@ static const GdkDebugKey gsk_gpu_optimization_keys[] = {
   { "blit", GSK_GPU_OPTIMIZE_BLIT, "Use shaders instead of vkCmdBlit()/glBlitFramebuffer()" },
   { "gradients", GSK_GPU_OPTIMIZE_GRADIENTS, "Don't supersample gradients" },
   { "mipmap", GSK_GPU_OPTIMIZE_MIPMAP, "Avoid creating mipmaps" },
-  { "glyph-align", GSK_GPU_OPTIMIZE_GLYPH_ALIGN, "Never align glyphs to the subpixel grid" },
-
-  { "gl-baseinstance", GSK_GPU_OPTIMIZE_GL_BASE_INSTANCE, "Assume no ARB/EXT_base_instance support" },
 };
 
 typedef struct _GskGpuRendererPrivate GskGpuRendererPrivate;
@@ -167,24 +164,36 @@ static GskGpuFrame *
 gsk_gpu_renderer_get_frame (GskGpuRenderer *self)
 {
   GskGpuRendererPrivate *priv = gsk_gpu_renderer_get_instance_private (self);
+  GskGpuFrame *earliest_frame = NULL;
+  gint64 earliest_time = G_MAXINT64;
   guint i;
 
-  while (TRUE)
+  for (i = 0; i < G_N_ELEMENTS (priv->frames); i++)
     {
-      for (i = 0; i < G_N_ELEMENTS (priv->frames); i++)
-        {
-          if (priv->frames[i] == NULL)
-            {
-              priv->frames[i] = gsk_gpu_renderer_create_frame (self);
-              return priv->frames[i];
-            }
+      gint64 timestamp;
 
-          if (!gsk_gpu_frame_is_busy (priv->frames[i]))
-            return priv->frames[i];
+      if (priv->frames[i] == NULL)
+        {
+          priv->frames[i] = gsk_gpu_renderer_create_frame (self);
+          return priv->frames[i];
         }
 
-      GSK_GPU_RENDERER_GET_CLASS (self)->wait (self, priv->frames, GSK_GPU_MAX_FRAMES);
+      if (!gsk_gpu_frame_is_busy (priv->frames[i]))
+        return priv->frames[i];
+
+      timestamp = gsk_gpu_frame_get_timestamp (priv->frames[i]);
+      if (timestamp < earliest_time)
+        {
+          earliest_time = timestamp;
+          earliest_frame = priv->frames[i];
+        }
     }
+
+  g_assert (earliest_frame);
+
+  gsk_gpu_frame_wait (earliest_frame);
+
+  return earliest_frame;
 }
 
 static gboolean
@@ -218,31 +227,17 @@ gsk_gpu_renderer_unrealize (GskRenderer *renderer)
 {
   GskGpuRenderer *self = GSK_GPU_RENDERER (renderer);
   GskGpuRendererPrivate *priv = gsk_gpu_renderer_get_instance_private (self);
-  gsize i, j;
+  gsize i;
 
   gsk_gpu_renderer_make_current (self);
 
-  while (TRUE)
+  for (i = 0; i < G_N_ELEMENTS (priv->frames); i++)
     {
-      for (i = 0, j = 0; i < G_N_ELEMENTS (priv->frames); i++)
-        {
-          if (priv->frames[i] == NULL)
-            break;
-          if (gsk_gpu_frame_is_busy (priv->frames[i]))
-            {
-              if (i > j)
-                {
-                  priv->frames[j] = priv->frames[i];
-                  priv->frames[i] = NULL;
-                }
-              j++;
-              continue;
-            }
-          g_clear_object (&priv->frames[i]);
-        }
-      if (j == 0)
+      if (priv->frames[i] == NULL)
         break;
-      GSK_GPU_RENDERER_GET_CLASS (self)->wait (self, priv->frames, j);
+      if (gsk_gpu_frame_is_busy (priv->frames[i]))
+        gsk_gpu_frame_wait (priv->frames[i]);
+      g_clear_object (&priv->frames[i]);
     }
 
   g_clear_object (&priv->context);
@@ -458,7 +453,7 @@ gsk_gpu_renderer_class_init (GskGpuRendererClass *klass)
   gsk_ensure_resources ();
 
   klass->optimizations = -1;
-  klass->optimizations &= ~gdk_parse_debug_var ("GSK_GPU_SKIP",
+  klass->optimizations &= ~gdk_parse_debug_var ("GSK_GPU_DISABLE",
                                                 gsk_gpu_optimization_keys,
                                                 G_N_ELEMENTS (gsk_gpu_optimization_keys));
   klass->get_scale = gsk_gpu_renderer_real_get_scale;

gsk/gpu/gskgpurendererprivate.h

@@ -35,9 +35,6 @@ struct _GskGpuRendererClass
 
   void                  (* make_current)                                (GskGpuRenderer         *self);
   GskGpuImage *         (* get_backbuffer)                              (GskGpuRenderer         *self);
-  void                  (* wait)                                        (GskGpuRenderer         *self,
-                                                                         GskGpuFrame           **frame,
-                                                                         gsize                   n_frames);
 
   double                (* get_scale)                                   (GskGpuRenderer         *self);
   GdkDmabufFormats *    (* get_dmabuf_formats)                          (GskGpuRenderer         *self);

gsk/gpu/gskgpuroundedcolorop.c

@@ -17,21 +17,14 @@ struct _GskGpuRoundedColorOp
 };
 
 static void
-gsk_gpu_rounded_color_op_print (GskGpuOp    *op,
-                                GskGpuFrame *frame,
-                                GString     *string,
-                                guint        indent)
+gsk_gpu_rounded_color_op_print_instance (GskGpuShaderOp *shader,
+                                         gpointer        instance_,
+                                         GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuRoundedcolorInstance *instance;
+  GskGpuRoundedcolorInstance *instance = (GskGpuRoundedcolorInstance *) instance_;
 
-  instance = (GskGpuRoundedcolorInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "rounded-color");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rounded_rect (string, instance->outline);
   gsk_gpu_print_rgba (string, instance->color);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_ROUNDED_COLOR_OP_CLASS = {
@@ -39,7 +32,7 @@ static const GskGpuShaderOpClass GSK_GPU_ROUNDED_COLOR_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuRoundedColorOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_rounded_color_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -50,6 +43,7 @@ static const GskGpuShaderOpClass GSK_GPU_ROUNDED_COLOR_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_roundedcolor_info,
 #endif
+  gsk_gpu_rounded_color_op_print_instance,
   gsk_gpu_roundedcolor_setup_attrib_locations,
   gsk_gpu_roundedcolor_setup_vao
 };

gsk/gpu/gskgpushaderop.c

@@ -3,6 +3,7 @@
 #include "gskgpushaderopprivate.h"
 
 #include "gskgpuframeprivate.h"
+#include "gskgpuprintprivate.h"
 #include "gskgldescriptorsprivate.h"
 #include "gskgldeviceprivate.h"
 #include "gskglframeprivate.h"
@@ -12,6 +13,8 @@
 #include "gskvulkandeviceprivate.h"
 #endif
 
+#include "gdkglcontextprivate.h"
+
 /* maximum number of ops to merge into one call
  * If this number is too high, the command may take too long
  * causing the driver to kill us.
@@ -26,6 +29,36 @@ gsk_gpu_shader_op_finish (GskGpuOp *op)
   g_clear_object (&self->desc);
 }
 
+void
+gsk_gpu_shader_op_print (GskGpuOp    *op,
+                         GskGpuFrame *frame,
+                         GString     *string,
+                         guint        indent)
+{
+  GskGpuShaderOp *self = (GskGpuShaderOp *) op;
+  const GskGpuShaderOpClass *shader_class = (const GskGpuShaderOpClass *) op->op_class;
+  const char *shader_name;
+  guchar *instance;
+  gsize i;
+
+  if (g_str_has_prefix (shader_class->shader_name, "gskgpu"))
+    shader_name = shader_class->shader_name + 6;
+  else
+    shader_name = shader_class->shader_name;
+
+  instance = gsk_gpu_frame_get_vertex_data (frame, self->vertex_offset);
+
+  for (i = 0; i < self->n_ops; i++)
+    {
+      gsk_gpu_print_op (string, indent, shader_name);
+      gsk_gpu_print_shader_info (string, self->clip);
+      shader_class->print_instance (self,
+                                    instance + i * shader_class->vertex_size,
+                                    string);
+      gsk_gpu_print_newline (string);
+    }
+}
+
 #ifdef GDK_RENDERING_VULKAN
 GskGpuOp *
 gsk_gpu_shader_op_vk_command_n (GskGpuOp              *op,
@@ -37,15 +70,15 @@ gsk_gpu_shader_op_vk_command_n (GskGpuOp              *op,
   GskGpuShaderOpClass *shader_op_class = (GskGpuShaderOpClass *) op->op_class;
   GskVulkanDescriptors *desc;
   GskGpuOp *next;
-  gsize i, n;
+  gsize i, n_ops, max_ops_per_draw;
 
   if (gsk_gpu_frame_should_optimize (frame, GSK_GPU_OPTIMIZE_MERGE) &&
       gsk_vulkan_device_has_feature (GSK_VULKAN_DEVICE (gsk_gpu_frame_get_device (frame)),
                                      GDK_VULKAN_FEATURE_NONUNIFORM_INDEXING))
-    n = MAX_MERGE_OPS;
+    max_ops_per_draw = MAX_MERGE_OPS;
   else
-    n = 1;
-  i = 1;
+    max_ops_per_draw = 1;
+
   desc = GSK_VULKAN_DESCRIPTORS (self->desc);
   if (desc && state->desc != desc)
     {
@@ -53,7 +86,8 @@ gsk_gpu_shader_op_vk_command_n (GskGpuOp              *op,
       state->desc = desc;
     }
 
-  for (next = op->next; next && i < n; next = next->next)
+  n_ops = self->n_ops;
+  for (next = op->next; next; next = next->next)
     {
       GskGpuShaderOp *next_shader = (GskGpuShaderOp *) next;
   
@@ -61,10 +95,10 @@ gsk_gpu_shader_op_vk_command_n (GskGpuOp              *op,
           next_shader->desc != self->desc ||
           next_shader->variation != self->variation ||
           next_shader->clip != self->clip ||
-          next_shader->vertex_offset != self->vertex_offset + i * shader_op_class->vertex_size)
+          next_shader->vertex_offset != self->vertex_offset + n_ops * shader_op_class->vertex_size)
         break;
 
-      i++;
+      n_ops += next_shader->n_ops;
     }
 
   vkCmdBindPipeline (state->vk_command_buffer,
@@ -78,10 +112,13 @@ gsk_gpu_shader_op_vk_command_n (GskGpuOp              *op,
                                                         state->vk_format,
                                                         state->vk_render_pass));
 
-  vkCmdDraw (state->vk_command_buffer,
-             6 * instance_scale, i,
-             0, self->vertex_offset / shader_op_class->vertex_size);
-
+  for (i = 0; i < n_ops; i += max_ops_per_draw)
+    {
+      vkCmdDraw (state->vk_command_buffer,
+                 6 * instance_scale, MIN (max_ops_per_draw, n_ops - i),
+                 0, self->vertex_offset / shader_op_class->vertex_size + i);
+    }
+ 
   return next;
 }
 
@@ -104,7 +141,7 @@ gsk_gpu_shader_op_gl_command_n (GskGpuOp          *op,
   GskGpuShaderOpClass *shader_op_class = (GskGpuShaderOpClass *) op->op_class;
   GskGLDescriptors *desc;
   GskGpuOp *next;
-  gsize i, n, n_external;
+  gsize i, n_ops, n_external, max_ops_per_draw;
 
   desc = GSK_GL_DESCRIPTORS (self->desc);
   if (desc)
@@ -135,11 +172,12 @@ gsk_gpu_shader_op_gl_command_n (GskGpuOp          *op,
     }
 
   if (gsk_gpu_frame_should_optimize (frame, GSK_GPU_OPTIMIZE_MERGE))
-    n = MAX_MERGE_OPS;
+    max_ops_per_draw = MAX_MERGE_OPS;
   else
-    n = 1;
-  i = 1;
-  for (next = op->next; next && i < n; next = next->next)
+    max_ops_per_draw = 1;
+
+  n_ops = self->n_ops;
+  for (next = op->next; next; next = next->next)
     {
       GskGpuShaderOp *next_shader = (GskGpuShaderOp *) next;
 
@@ -147,28 +185,32 @@ gsk_gpu_shader_op_gl_command_n (GskGpuOp          *op,
           next_shader->desc != self->desc ||
           next_shader->variation != self->variation ||
           next_shader->clip != self->clip ||
-          next_shader->vertex_offset != self->vertex_offset + i * shader_op_class->vertex_size)
+          next_shader->vertex_offset != self->vertex_offset + n_ops * shader_op_class->vertex_size)
         break;
 
-      i++;
+      n_ops += next_shader->n_ops;
     }
 
-  if (gsk_gpu_frame_should_optimize (frame, GSK_GPU_OPTIMIZE_GL_BASE_INSTANCE))
+  for (i = 0; i < n_ops; i += max_ops_per_draw)
     {
-      glDrawArraysInstancedBaseInstance (GL_TRIANGLES,
-                                         0,
-                                         6 * instance_scale,
-                                         i,
-                                         self->vertex_offset / shader_op_class->vertex_size);
-    }
-  else
-    {
-      shader_op_class->setup_vao (self->vertex_offset);
+      if (gdk_gl_context_has_feature (GDK_GL_CONTEXT (gsk_gpu_frame_get_context (frame)),
+                                      GDK_GL_FEATURE_BASE_INSTANCE))
+        {
+          glDrawArraysInstancedBaseInstance (GL_TRIANGLES,
+                                             0,
+                                             6 * instance_scale,
+                                             MIN (max_ops_per_draw, n_ops - i),
+                                             self->vertex_offset / shader_op_class->vertex_size + i);
+        }
+      else
+        {
+          shader_op_class->setup_vao (self->vertex_offset + i * shader_op_class->vertex_size);
 
-      glDrawArraysInstanced (GL_TRIANGLES,
-                             0,
-                             6 * instance_scale,
-                             i);
+          glDrawArraysInstanced (GL_TRIANGLES,
+                                 0,
+                                 6 * instance_scale,
+                                 MIN (max_ops_per_draw, n_ops - i));
+        }
     }
 
   return next;
@@ -182,7 +224,7 @@ gsk_gpu_shader_op_gl_command (GskGpuOp          *op,
   return gsk_gpu_shader_op_gl_command_n (op, frame, state, 1);
 }
 
-GskGpuShaderOp *
+void
 gsk_gpu_shader_op_alloc (GskGpuFrame               *frame,
                          const GskGpuShaderOpClass *op_class,
                          guint32                    variation,
@@ -190,20 +232,39 @@ gsk_gpu_shader_op_alloc (GskGpuFrame               *frame,
                          GskGpuDescriptors         *desc,
                          gpointer                   out_vertex_data)
 {
-  GskGpuShaderOp *self;
+  GskGpuOp *last;
+  GskGpuShaderOp *last_shader;
+  gsize vertex_offset;
 
-  self = (GskGpuShaderOp *) gsk_gpu_op_alloc (frame, &op_class->parent_class);
+  vertex_offset = gsk_gpu_frame_reserve_vertex_data (frame, op_class->vertex_size);
 
-  self->variation = variation;
-  self->clip = clip;
-  if (desc)
-    self->desc = g_object_ref (desc);
+  last = gsk_gpu_frame_get_last_op (frame);
+  /* careful: We're casting without checking, but the if() does the check */
+  last_shader = (GskGpuShaderOp *) last;
+  if (last &&
+      last->op_class == (const GskGpuOpClass *) op_class &&
+      last_shader->desc == desc &&
+      last_shader->variation == variation &&
+      last_shader->clip == clip &&
+      last_shader->vertex_offset + last_shader->n_ops * op_class->vertex_size == vertex_offset)
+    {
+      last_shader->n_ops++;
+    }
   else
-    self->desc = NULL;
-  self->vertex_offset = gsk_gpu_frame_reserve_vertex_data (frame, op_class->vertex_size);
+    {
+      GskGpuShaderOp *self;
+      self = (GskGpuShaderOp *) gsk_gpu_op_alloc (frame, &op_class->parent_class);
 
-  *((gpointer *) out_vertex_data) = gsk_gpu_frame_get_vertex_data (frame, self->vertex_offset);
+      self->variation = variation;
+      self->clip = clip;
+      self->vertex_offset = vertex_offset;
+      if (desc)
+        self->desc = g_object_ref (desc);
+      else
+        self->desc = NULL;
+      self->n_ops = 1;
+    }
 
-  return self;
+  *((gpointer *) out_vertex_data) = gsk_gpu_frame_get_vertex_data (frame, vertex_offset);
 }
 

gsk/gpu/gskgpushaderopprivate.h

@@ -14,6 +14,7 @@ struct _GskGpuShaderOp
   guint32 variation;
   GskGpuShaderClip clip;
   gsize vertex_offset;
+  gsize n_ops;
 };
 
 struct _GskGpuShaderOpClass
@@ -25,11 +26,14 @@ struct _GskGpuShaderOpClass
 #ifdef GDK_RENDERING_VULKAN
   const VkPipelineVertexInputStateCreateInfo *vertex_input_state;
 #endif
+  void                  (* print_instance)                              (GskGpuShaderOp         *shader,
+                                                                         gpointer                instance,
+                                                                         GString                *string);
   void                  (* setup_attrib_locations)                      (GLuint                  program);
   void                  (* setup_vao)                                   (gsize                   offset);
 };
 
-GskGpuShaderOp *        gsk_gpu_shader_op_alloc                         (GskGpuFrame            *frame,
+void                    gsk_gpu_shader_op_alloc                         (GskGpuFrame            *frame,
                                                                          const GskGpuShaderOpClass *op_class,
                                                                          guint32                 variation,
                                                                          GskGpuShaderClip        clip,
@@ -38,6 +42,10 @@ GskGpuShaderOp *        gsk_gpu_shader_op_alloc                         (GskGpuF
 
 void                    gsk_gpu_shader_op_finish                        (GskGpuOp               *op);
 
+void                    gsk_gpu_shader_op_print                         (GskGpuOp               *op,
+                                                                         GskGpuFrame            *frame,
+                                                                         GString                *string,
+                                                                         guint                   indent);
 #ifdef GDK_RENDERING_VULKAN
 GskGpuOp *              gsk_gpu_shader_op_vk_command_n                  (GskGpuOp               *op,
                                                                          GskGpuFrame            *frame,

gsk/gpu/gskgpustraightalphaop.c

@@ -19,21 +19,14 @@ struct _GskGpuStraightAlphaOp
 };
 
 static void
-gsk_gpu_straight_alpha_op_print (GskGpuOp    *op,
-                                 GskGpuFrame *frame,
-                                 GString     *string,
-                                 guint        indent)
+gsk_gpu_straight_alpha_op_print_instance (GskGpuShaderOp *shader,
+                                          gpointer        instance_,
+                                          GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuStraightalphaInstance *instance;
+  GskGpuStraightalphaInstance *instance = (GskGpuStraightalphaInstance *) instance_;
 
-  instance = (GskGpuStraightalphaInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "straight-alpha");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->tex_id);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_STRAIGHT_ALPHA_OP_CLASS = {
@@ -41,7 +34,7 @@ static const GskGpuShaderOpClass GSK_GPU_STRAIGHT_ALPHA_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuStraightAlphaOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_straight_alpha_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -52,6 +45,7 @@ static const GskGpuShaderOpClass GSK_GPU_STRAIGHT_ALPHA_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_straightalpha_info,
 #endif
+  gsk_gpu_straight_alpha_op_print_instance,
   gsk_gpu_straightalpha_setup_attrib_locations,
   gsk_gpu_straightalpha_setup_vao
 };

gsk/gpu/gskgputextureop.c

@@ -16,21 +16,14 @@ struct _GskGpuTextureOp
 };
 
 static void
-gsk_gpu_texture_op_print (GskGpuOp    *op,
-                          GskGpuFrame *frame,
-                          GString     *string,
-                          guint        indent)
+gsk_gpu_texture_op_print_instance (GskGpuShaderOp *shader,
+                                   gpointer        instance_,
+                                   GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuTextureInstance *instance;
+  GskGpuTextureInstance *instance = (GskGpuTextureInstance *) instance_;
 
-  instance = (GskGpuTextureInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "texture");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
   gsk_gpu_print_image_descriptor (string, shader->desc, instance->tex_id);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_TEXTURE_OP_CLASS = {
@@ -38,7 +31,7 @@ static const GskGpuShaderOpClass GSK_GPU_TEXTURE_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuTextureOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_texture_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -49,6 +42,7 @@ static const GskGpuShaderOpClass GSK_GPU_TEXTURE_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_texture_info,
 #endif
+  gsk_gpu_texture_op_print_instance,
   gsk_gpu_texture_setup_attrib_locations,
   gsk_gpu_texture_setup_vao
 };

gsk/gpu/gskgputypesprivate.h

@@ -118,8 +118,5 @@ typedef enum {
   GSK_GPU_OPTIMIZE_BLIT                 = 1 <<  3,
   GSK_GPU_OPTIMIZE_GRADIENTS            = 1 <<  4,
   GSK_GPU_OPTIMIZE_MIPMAP               = 1 <<  5,
-  GSK_GPU_OPTIMIZE_GLYPH_ALIGN          = 1 <<  6,
-  /* These require hardware support */
-  GSK_GPU_OPTIMIZE_GL_BASE_INSTANCE     = 1 <<  7,
 } GskGpuOptimizations;
 

gsk/gpu/gskgpuuberop.c

@@ -17,20 +17,13 @@ struct _GskGpuUberOp
 };
 
 static void
-gsk_gpu_uber_op_print (GskGpuOp    *op,
-                       GskGpuFrame *frame,
-                       GString     *string,
-                       guint        indent)
+gsk_gpu_uber_op_print_instance (GskGpuShaderOp *shader,
+                                gpointer        instance_,
+                                GString        *string)
 {
-  GskGpuShaderOp *shader = (GskGpuShaderOp *) op;
-  GskGpuUberInstance *instance;
+  GskGpuUberInstance *instance = instance_;
 
-  instance = (GskGpuUberInstance *) gsk_gpu_frame_get_vertex_data (frame, shader->vertex_offset);
-
-  gsk_gpu_print_op (string, indent, "uber");
-  gsk_gpu_print_shader_info (string, shader->clip);
   gsk_gpu_print_rect (string, instance->rect);
-  gsk_gpu_print_newline (string);
 }
 
 static const GskGpuShaderOpClass GSK_GPU_UBER_OP_CLASS = {
@@ -38,7 +31,7 @@ static const GskGpuShaderOpClass GSK_GPU_UBER_OP_CLASS = {
     GSK_GPU_OP_SIZE (GskGpuUberOp),
     GSK_GPU_STAGE_SHADER,
     gsk_gpu_shader_op_finish,
-    gsk_gpu_uber_op_print,
+    gsk_gpu_shader_op_print,
 #ifdef GDK_RENDERING_VULKAN
     gsk_gpu_shader_op_vk_command,
 #endif
@@ -49,8 +42,9 @@ static const GskGpuShaderOpClass GSK_GPU_UBER_OP_CLASS = {
 #ifdef GDK_RENDERING_VULKAN
   &gsk_gpu_uber_info,
 #endif
+  gsk_gpu_uber_op_print_instance,
   gsk_gpu_uber_setup_attrib_locations,
-  gsk_gpu_uber_setup_vao
+  gsk_gpu_uber_setup_vao,
 };
 
 void

gsk/gpu/gskgpuuploadop.c

@@ -14,7 +14,6 @@
 
 #include "gdk/gdkglcontextprivate.h"
 #include "gsk/gskdebugprivate.h"
-#include "gskvec2private.h"
 
 static GskGpuOp *
 gsk_gpu_upload_op_gl_command_with_area (GskGpuOp                    *op,
@@ -53,7 +52,7 @@ gsk_gpu_upload_op_gl_command_with_area (GskGpuOp                    *op,
     {
       glTexSubImage2D (GL_TEXTURE_2D, 0, area->x, area->y, area->width, area->height, gl_format, gl_type, data);
     }
-  else if (stride % bpp == 0 && gdk_gl_context_has_unpack_subimage (context))
+  else if (stride % bpp == 0 && gdk_gl_context_has_feature (context, GDK_GL_FEATURE_UNPACK_SUBIMAGE))
     {
       glPixelStorei (GL_UNPACK_ROW_LENGTH, stride / bpp);
 
@@ -466,8 +465,8 @@ gsk_gpu_upload_cairo_op (GskGpuFrame           *frame,
   self->image = gsk_gpu_device_create_upload_image (gsk_gpu_frame_get_device (frame),
                                                     FALSE,
                                                     GDK_MEMORY_DEFAULT,
-                                                    ceil (gsk_vec2_get_x (scale) * viewport->size.width),
-                                                    ceil (gsk_vec2_get_y (scale) * viewport->size.height));
+                                                    ceil (graphene_vec2_get_x (scale) * viewport->size.width),
+                                                    ceil (graphene_vec2_get_y (scale) * viewport->size.height));
   self->viewport = *viewport;
   self->func = func;
   self->user_data = user_data;

gsk/gpu/gsknglrenderer.c

@@ -72,11 +72,6 @@ gsk_ngl_renderer_create_context (GskGpuRenderer       *renderer,
    */
   *supported &= ~GSK_GPU_OPTIMIZE_UBER;
 
-  if (!gdk_gl_context_check_version (context, "4.2", "9.9") &&
-      !epoxy_has_gl_extension ("GL_EXT_base_instance") &&
-      !epoxy_has_gl_extension ("GL_ARB_base_instance"))
-    *supported &= ~GSK_GPU_OPTIMIZE_GL_BASE_INSTANCE;
-
   return GDK_DRAW_CONTEXT (context);
 }
 
@@ -119,13 +114,6 @@ gsk_ngl_renderer_get_backbuffer (GskGpuRenderer *renderer)
   return self->backbuffer;
 }
 
-static void
-gsk_ngl_renderer_wait (GskGpuRenderer  *self,
-                       GskGpuFrame    **frame,
-                       gsize            n_frames)
-{
-}
-
 static double
 gsk_ngl_renderer_get_scale (GskGpuRenderer *self)
 {
@@ -164,7 +152,6 @@ gsk_ngl_renderer_class_init (GskNglRendererClass *klass)
   gpu_renderer_class->create_context = gsk_ngl_renderer_create_context;
   gpu_renderer_class->make_current = gsk_ngl_renderer_make_current;
   gpu_renderer_class->get_backbuffer = gsk_ngl_renderer_get_backbuffer;
-  gpu_renderer_class->wait = gsk_ngl_renderer_wait;
   gpu_renderer_class->get_scale = gsk_ngl_renderer_get_scale;
   gpu_renderer_class->get_dmabuf_formats = gsk_ngl_renderer_get_dmabuf_formats;
 

gsk/gpu/gskvulkanbuffer.c

@@ -97,7 +97,8 @@ gsk_vulkan_buffer_new_internal (GskVulkanDevice   *device,
   self->allocator = gsk_vulkan_device_find_allocator (device,
                                                       requirements.memoryTypeBits,
                                                       GSK_VULKAN_MEMORY_MAPPABLE,
-                                                      GSK_VULKAN_MEMORY_MAPPABLE);
+                                                      GSK_VULKAN_MEMORY_MAPPABLE |
+                                                      VK_MEMORY_PROPERTY_HOST_CACHED_BIT);
   gsk_vulkan_alloc (self->allocator,
                     requirements.size,
                     requirements.alignment,

gsk/gpu/gskvulkanframe.c

@@ -74,6 +74,21 @@ gsk_vulkan_frame_is_busy (GskGpuFrame *frame)
   return vkGetFenceStatus (device, self->vk_fence) == VK_NOT_READY;
 }
 
+static void
+gsk_vulkan_frame_wait (GskGpuFrame *frame)
+{
+  GskVulkanFrame *self = GSK_VULKAN_FRAME (frame);
+  VkDevice vk_device;
+
+  vk_device = gsk_vulkan_device_get_vk_device (GSK_VULKAN_DEVICE (gsk_gpu_frame_get_device (frame)));
+
+  GSK_VK_CHECK (vkWaitForFences, vk_device,
+                                 1,
+                                 &self->vk_fence,
+                                 VK_FALSE,
+                                 INT64_MAX);
+}
+
 static void
 gsk_vulkan_frame_setup (GskGpuFrame *frame)
 {
@@ -387,6 +402,7 @@ gsk_vulkan_frame_class_init (GskVulkanFrameClass *klass)
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
   gpu_frame_class->is_busy = gsk_vulkan_frame_is_busy;
+  gpu_frame_class->wait = gsk_vulkan_frame_wait;
   gpu_frame_class->setup = gsk_vulkan_frame_setup;
   gpu_frame_class->cleanup = gsk_vulkan_frame_cleanup;
   gpu_frame_class->upload_texture = gsk_vulkan_frame_upload_texture;

gsk/gpu/gskvulkanrenderer.c

@@ -129,31 +129,6 @@ gsk_vulkan_renderer_get_backbuffer (GskGpuRenderer *renderer)
   return self->targets[gdk_vulkan_context_get_draw_index (context)];
 }
 
-static void
-gsk_vulkan_renderer_wait (GskGpuRenderer  *renderer,
-                          GskGpuFrame    **frames,
-                          gsize            n_frames)
-{
-  VkFence *fences;
-  VkDevice vk_device;
-  gsize i;
-
-  vk_device = gsk_vulkan_device_get_vk_device (GSK_VULKAN_DEVICE (gsk_gpu_renderer_get_device (renderer)));
-
-  fences = g_alloca (sizeof (VkFence) * n_frames);
-
-  for (i = 0; i < n_frames; i++)
-    {
-      fences[i] = gsk_vulkan_frame_get_vk_fence (GSK_VULKAN_FRAME (frames[i]));
-    }
-
-  GSK_VK_CHECK (vkWaitForFences, vk_device,
-                                 n_frames,
-                                 fences,
-                                 VK_FALSE,
-                                 INT64_MAX);
-}
-
 static GdkDmabufFormats *
 gsk_vulkan_renderer_get_dmabuf_formats (GskGpuRenderer *renderer)
 {
@@ -189,7 +164,6 @@ gsk_vulkan_renderer_class_init (GskVulkanRendererClass *klass)
   gpu_renderer_class->create_context = gsk_vulkan_renderer_create_context;
   gpu_renderer_class->make_current = gsk_vulkan_renderer_make_current;
   gpu_renderer_class->get_backbuffer = gsk_vulkan_renderer_get_backbuffer;
-  gpu_renderer_class->wait = gsk_vulkan_renderer_wait;
   gpu_renderer_class->get_dmabuf_formats = gsk_vulkan_renderer_get_dmabuf_formats;
 
   renderer_class->unrealize = gsk_vulkan_renderer_unrealize;