wayland/surface: Move shaped-texture synchronization to actor surface

As with most other state that ends up being pushed to the actor and the
associated shaped texture, also push the texture and the corresponding
metadata from the actor surface. This fixes an issue when a toplevel
surface was reset, where before the subsurface content was not properly
re-initialized, as content state synchronization only happened on
commit, not when asked to synchronize.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/961

src/wayland/meta-wayland-actor-surface.c

@@ -28,6 +28,7 @@
 #include "compositor/meta-surface-actor-wayland.h"
 #include "compositor/meta-window-actor-wayland.h"
 #include "compositor/region-utils.h"
+#include "wayland/meta-wayland-buffer.h"
 #include "wayland/meta-wayland-surface.h"
 #include "wayland/meta-window-wayland.h"
 
@@ -147,13 +148,33 @@ meta_wayland_actor_surface_real_sync_actor_state (MetaWaylandActorSurface *actor
     meta_wayland_surface_role_get_surface (surface_role);
   MetaSurfaceActor *surface_actor;
   MetaShapedTexture *stex;
+  MetaWaylandBuffer *buffer;
   cairo_rectangle_int_t surface_rect;
   int geometry_scale;
   MetaWaylandSurface *subsurface_surface;
 
   surface_actor = priv->actor;
   stex = meta_surface_actor_get_texture (surface_actor);
+
+  buffer = surface->buffer_ref.buffer;
+  if (buffer)
+    {
+      CoglSnippet *snippet;
+      gboolean is_y_inverted;
+
+      snippet = meta_wayland_buffer_create_snippet (buffer);
+      is_y_inverted = meta_wayland_buffer_is_y_inverted (buffer);
+
+      meta_shaped_texture_set_texture (stex, surface->texture);
+      meta_shaped_texture_set_snippet (stex, snippet);
+      meta_shaped_texture_set_is_y_inverted (stex, is_y_inverted);
       meta_shaped_texture_set_buffer_scale (stex, surface->scale);
+      cogl_clear_object (&snippet);
+    }
+  else
+    {
+      meta_shaped_texture_set_texture (stex, NULL);
+    }
 
   /* Wayland surface coordinate space -> stage coordinate space */
   geometry_scale = meta_wayland_actor_surface_get_geometry_scale (actor_surface);

src/wayland/meta-wayland-buffer.c

@@ -222,7 +222,6 @@ shm_buffer_get_cogl_pixel_format (struct wl_shm_buffer  *shm_buffer,
 static gboolean
 shm_buffer_attach (MetaWaylandBuffer  *buffer,
                    CoglTexture       **texture,
-                   gboolean           *changed_texture,
                    GError            **error)
 {
   MetaBackend *backend = meta_get_backend ();
@@ -248,7 +247,6 @@ shm_buffer_attach (MetaWaylandBuffer  *buffer,
       _cogl_texture_get_format (*texture) == format)
     {
       buffer->is_y_inverted = TRUE;
-      *changed_texture = FALSE;
       return TRUE;
     }
 
@@ -293,7 +291,6 @@ shm_buffer_attach (MetaWaylandBuffer  *buffer,
     return FALSE;
 
   *texture = new_texture;
-  *changed_texture = TRUE;
   buffer->is_y_inverted = TRUE;
 
   return TRUE;
@@ -302,7 +299,6 @@ shm_buffer_attach (MetaWaylandBuffer  *buffer,
 static gboolean
 egl_image_buffer_attach (MetaWaylandBuffer  *buffer,
                          CoglTexture       **texture,
-                         gboolean           *changed_texture,
                          GError            **error)
 {
   MetaBackend *backend = meta_get_backend ();
@@ -318,7 +314,6 @@ egl_image_buffer_attach (MetaWaylandBuffer  *buffer,
 
   if (buffer->egl_image.texture)
     {
-      *changed_texture = *texture != buffer->egl_image.texture;
       cogl_clear_object (texture);
       *texture = cogl_object_ref (buffer->egl_image.texture);
       return TRUE;
@@ -386,7 +381,6 @@ egl_image_buffer_attach (MetaWaylandBuffer  *buffer,
 
   cogl_clear_object (texture);
   *texture = cogl_object_ref (buffer->egl_image.texture);
-  *changed_texture = TRUE;
 
   return TRUE;
 }
@@ -395,7 +389,6 @@ egl_image_buffer_attach (MetaWaylandBuffer  *buffer,
 static gboolean
 egl_stream_buffer_attach (MetaWaylandBuffer  *buffer,
                           CoglTexture       **texture,
-                          gboolean           *changed_texture,
                           GError            **error)
 {
   MetaWaylandEglStream *stream = buffer->egl_stream.stream;
@@ -405,7 +398,6 @@ egl_stream_buffer_attach (MetaWaylandBuffer  *buffer,
   if (!meta_wayland_egl_stream_attach (stream, error))
     return FALSE;
 
-  *changed_texture = *texture != buffer->egl_stream.texture;
   cogl_clear_object (texture);
   *texture = cogl_object_ref (buffer->egl_stream.texture);
 
@@ -435,7 +427,6 @@ egl_stream_buffer_attach (MetaWaylandBuffer  *buffer,
 gboolean
 meta_wayland_buffer_attach (MetaWaylandBuffer  *buffer,
                             CoglTexture       **texture,
-                            gboolean           *changed_texture,
                             GError            **error)
 {
   g_return_val_if_fail (buffer->resource, FALSE);
@@ -452,17 +443,16 @@ meta_wayland_buffer_attach (MetaWaylandBuffer  *buffer,
   switch (buffer->type)
     {
     case META_WAYLAND_BUFFER_TYPE_SHM:
-      return shm_buffer_attach (buffer, texture, changed_texture, error);
+      return shm_buffer_attach (buffer, texture, error);
     case META_WAYLAND_BUFFER_TYPE_EGL_IMAGE:
-      return egl_image_buffer_attach (buffer, texture, changed_texture, error);
+      return egl_image_buffer_attach (buffer, texture, error);
 #ifdef HAVE_WAYLAND_EGLSTREAM
     case META_WAYLAND_BUFFER_TYPE_EGL_STREAM:
-      return egl_stream_buffer_attach (buffer, texture, changed_texture, error);
+      return egl_stream_buffer_attach (buffer, texture, error);
 #endif
     case META_WAYLAND_BUFFER_TYPE_DMA_BUF:
       return meta_wayland_dma_buf_buffer_attach (buffer,
                                                  texture,
-                                                 changed_texture,
                                                  error);
     case META_WAYLAND_BUFFER_TYPE_UNKNOWN:
       g_assert_not_reached ();

src/wayland/meta-wayland-buffer.h

@@ -82,7 +82,6 @@ gboolean                meta_wayland_buffer_is_realized         (MetaWaylandBuff
 gboolean                meta_wayland_buffer_realize             (MetaWaylandBuffer     *buffer);
 gboolean                meta_wayland_buffer_attach              (MetaWaylandBuffer     *buffer,
                                                                  CoglTexture          **texture,
-                                                                 gboolean              *changed_texture,
                                                                  GError               **error);
 CoglSnippet *           meta_wayland_buffer_create_snippet      (MetaWaylandBuffer     *buffer);
 gboolean                meta_wayland_buffer_is_y_inverted       (MetaWaylandBuffer     *buffer);

src/wayland/meta-wayland-dma-buf.c

@@ -168,13 +168,11 @@ meta_wayland_dma_buf_realize_texture (MetaWaylandBuffer  *buffer,
 gboolean
 meta_wayland_dma_buf_buffer_attach (MetaWaylandBuffer  *buffer,
                                     CoglTexture       **texture,
-                                    gboolean           *changed_texture,
                                     GError            **error)
 {
   if (!meta_wayland_dma_buf_realize_texture (buffer, error))
     return FALSE;
 
-  *changed_texture = *texture != buffer->dma_buf.texture;
   cogl_clear_object (texture);
   *texture = cogl_object_ref (buffer->dma_buf.texture);
   return TRUE;

src/wayland/meta-wayland-dma-buf.h

@@ -44,7 +44,6 @@ gboolean meta_wayland_dma_buf_init (MetaWaylandCompositor *compositor);
 gboolean
 meta_wayland_dma_buf_buffer_attach (MetaWaylandBuffer  *buffer,
                                     CoglTexture       **texture,
-                                    gboolean           *changed_texture,
                                     GError            **error);
 
 MetaWaylandDmaBufBuffer *

src/wayland/meta-wayland-surface.c

@@ -652,11 +652,9 @@ meta_wayland_surface_apply_state (MetaWaylandSurface      *surface,
       if (state->buffer)
         {
           GError *error = NULL;
-          gboolean changed_texture;
 
           if (!meta_wayland_buffer_attach (state->buffer,
                                            &surface->texture,
-                                           &changed_texture,
                                            &error))
             {
               g_warning ("Could not import pending buffer: %s", error->message);
@@ -667,24 +665,6 @@ meta_wayland_surface_apply_state (MetaWaylandSurface      *surface,
               g_error_free (error);
               goto cleanup;
             }
-
-          if (changed_texture && meta_wayland_surface_get_actor (surface))
-            {
-              MetaShapedTexture *stex;
-              CoglTexture *texture;
-              CoglSnippet *snippet;
-              gboolean is_y_inverted;
-
-              stex = meta_surface_actor_get_texture (meta_wayland_surface_get_actor (surface));
-              texture = surface->texture;
-              snippet = meta_wayland_buffer_create_snippet (state->buffer);
-              is_y_inverted = meta_wayland_buffer_is_y_inverted (state->buffer);
-
-              meta_shaped_texture_set_texture (stex, texture);
-              meta_shaped_texture_set_snippet (stex, snippet);
-              meta_shaped_texture_set_is_y_inverted (stex, is_y_inverted);
-              g_clear_pointer (&snippet, cogl_object_unref);
-            }
         }
       else
         {