[PATCH v2 3/3] Create a weston_surface_state structure for storing pending surface state and move the surface commit logic into weston_surface_commit_state

Jason Ekstrand jason at jlekstrand.net
Thu Jun 26 11:19:05 PDT 2014


From: Jason Ekstrand <jason at jlekstrand.net>

This new structure is used for both weston_surface.pending and
weston_subsurface.cached.

Signed-off-by: Jason Ekstrand <jason.ekstrand at intel.com>
---
 src/compositor.c | 270 +++++++++++++++++++++++--------------------------------
 src/compositor.h |  80 +++++++----------
 2 files changed, 142 insertions(+), 208 deletions(-)

diff --git a/src/compositor.c b/src/compositor.c
index 4ccae79..be33a36 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -320,16 +320,6 @@ weston_client_launch(struct weston_compositor *compositor,
 }
 
 static void
-surface_handle_pending_buffer_destroy(struct wl_listener *listener, void *data)
-{
-	struct weston_surface *surface =
-		container_of(listener, struct weston_surface,
-			     pending.buffer_destroy_listener);
-
-	surface->pending.buffer = NULL;
-}
-
-static void
 empty_region(pixman_region32_t *region)
 {
 	pixman_region32_fini(region);
@@ -389,6 +379,72 @@ struct weston_frame_callback {
 	struct wl_list link;
 };
 
+static void
+surface_state_handle_buffer_destroy(struct wl_listener *listener, void *data)
+{
+	struct weston_surface_state *state =
+		container_of(listener, struct weston_surface_state,
+			     buffer_destroy_listener);
+
+	state->buffer = NULL;
+}
+
+static void
+weston_surface_state_init(struct weston_surface_state *state)
+{
+	state->newly_attached = 0;
+	state->buffer = NULL;
+	state->buffer_destroy_listener.notify =
+		surface_state_handle_buffer_destroy;
+	state->sx = 0;
+	state->sy = 0;
+
+	pixman_region32_fini(&state->damage);
+	pixman_region32_fini(&state->opaque);
+	region_init_infinite(&state->input);
+
+	wl_list_init(&state->frame_callback_list);
+
+	state->buffer_viewport.buffer.transform = WL_OUTPUT_TRANSFORM_NORMAL;
+	state->buffer_viewport.buffer.scale = 1;
+	state->buffer_viewport.buffer.src_width = wl_fixed_from_int(-1);
+	state->buffer_viewport.surface.width = -1;
+	state->buffer_viewport.changed = 0;
+}
+
+static void
+weston_surface_state_fini(struct weston_surface_state *state)
+{
+	struct weston_frame_callback *cb, *next;
+
+	wl_list_for_each_safe(cb, next,
+			      &state->frame_callback_list, link)
+		wl_resource_destroy(cb->resource);
+
+	pixman_region32_fini(&state->input);
+	pixman_region32_fini(&state->opaque);
+	pixman_region32_fini(&state->damage);
+
+	if (state->buffer)
+		wl_list_remove(&state->buffer_destroy_listener.link);
+	state->buffer = NULL;
+}
+
+static void
+weston_surface_state_set_buffer(struct weston_surface_state *state,
+				struct weston_buffer *buffer)
+{
+	if (state->buffer == buffer)
+		return;
+
+	if (state->buffer)
+		wl_list_remove(&state->buffer_destroy_listener.link);
+	state->buffer = buffer;
+	if (state->buffer)
+		wl_signal_add(&state->buffer->destroy_signal,
+			      &state->buffer_destroy_listener);
+}
+
 WL_EXPORT struct weston_surface *
 weston_surface_create(struct weston_compositor *compositor)
 {
@@ -409,10 +465,10 @@ weston_surface_create(struct weston_compositor *compositor)
 	surface->buffer_viewport.buffer.scale = 1;
 	surface->buffer_viewport.buffer.src_width = wl_fixed_from_int(-1);
 	surface->buffer_viewport.surface.width = -1;
-	surface->pending.buffer_viewport.changed = 0;
-	surface->pending.buffer_viewport = surface->buffer_viewport;
+
+	weston_surface_state_init(&surface->pending);
+
 	surface->output = NULL;
-	surface->pending.newly_attached = 0;
 
 	surface->viewport_resource = NULL;
 
@@ -424,13 +480,6 @@ weston_surface_create(struct weston_compositor *compositor)
 
 	wl_list_init(&surface->frame_callback_list);
 
-	surface->pending.buffer_destroy_listener.notify =
-		surface_handle_pending_buffer_destroy;
-	pixman_region32_init(&surface->pending.damage);
-	pixman_region32_init(&surface->pending.opaque);
-	region_init_infinite(&surface->pending.input);
-	wl_list_init(&surface->pending.frame_callback_list);
-
 	wl_list_init(&surface->subsurface_list);
 	wl_list_init(&surface->subsurface_list_pending);
 
@@ -1360,9 +1409,7 @@ weston_surface_unmap(struct weston_surface *surface)
 static void
 weston_surface_reset_pending_buffer(struct weston_surface *surface)
 {
-	if (surface->pending.buffer)
-		wl_list_remove(&surface->pending.buffer_destroy_listener.link);
-	surface->pending.buffer = NULL;
+	weston_surface_state_set_buffer(&surface->pending, NULL);
 	surface->pending.sx = 0;
 	surface->pending.sy = 0;
 	surface->pending.newly_attached = 0;
@@ -1411,16 +1458,7 @@ weston_surface_destroy(struct weston_surface *surface)
 	wl_list_for_each_safe(ev, nv, &surface->views, surface_link)
 		weston_view_destroy(ev);
 
-	wl_list_for_each_safe(cb, next,
-			      &surface->pending.frame_callback_list, link)
-		wl_resource_destroy(cb->resource);
-
-	pixman_region32_fini(&surface->pending.input);
-	pixman_region32_fini(&surface->pending.opaque);
-	pixman_region32_fini(&surface->pending.damage);
-
-	if (surface->pending.buffer)
-		wl_list_remove(&surface->pending.buffer_destroy_listener.link);
+	weston_surface_state_fini(&surface->pending);
 
 	weston_buffer_reference(&surface->buffer_ref, NULL);
 
@@ -1946,17 +1984,11 @@ surface_attach(struct wl_client *client,
 
 	/* Attach, attach, without commit in between does not send
 	 * wl_buffer.release. */
-	if (surface->pending.buffer)
-		wl_list_remove(&surface->pending.buffer_destroy_listener.link);
+	weston_surface_state_set_buffer(&surface->pending, buffer);
 
 	surface->pending.sx = sx;
 	surface->pending.sy = sy;
-	surface->pending.buffer = buffer;
 	surface->pending.newly_attached = 1;
-	if (buffer) {
-		wl_signal_add(&buffer->destroy_signal,
-			      &surface->pending.buffer_destroy_listener);
-	}
 }
 
 static void
@@ -2055,7 +2087,8 @@ weston_surface_commit_subsurface_order(struct weston_surface *surface)
 }
 
 static void
-weston_surface_commit(struct weston_surface *surface)
+weston_surface_commit_state(struct weston_surface *surface,
+			    struct weston_surface_state *state)
 {
 	struct weston_view *view;
 	pixman_region32_t opaque;
@@ -2063,37 +2096,35 @@ weston_surface_commit(struct weston_surface *surface)
 	/* wl_surface.set_buffer_transform */
 	/* wl_surface.set_buffer_scale */
 	/* wl_viewport.set */
-	surface->buffer_viewport = surface->pending.buffer_viewport;
+	surface->buffer_viewport = state->buffer_viewport;
 
 	/* wl_surface.attach */
-	if (surface->pending.newly_attached)
-		weston_surface_attach(surface, surface->pending.buffer);
+	if (state->newly_attached)
+		weston_surface_attach(surface, state->buffer);
+	weston_surface_state_set_buffer(state, NULL);
 
-	if (surface->pending.newly_attached ||
-	    surface->pending.buffer_viewport.changed) {
+	if (state->newly_attached || state->buffer_viewport.changed) {
 		weston_surface_update_size(surface);
 		if (surface->configure)
-			surface->configure(surface, surface->pending.sx,
-					   surface->pending.sy);
+			surface->configure(surface, state->sx, state->sy);
 	}
 
-	weston_surface_reset_pending_buffer(surface);
+	state->sx = 0;
+	state->sy = 0;
+	state->newly_attached = 0;
+	state->buffer_viewport.changed = 0;
 
 	/* wl_surface.damage */
 	pixman_region32_union(&surface->damage, &surface->damage,
-			      &surface->pending.damage);
+			      &state->damage);
 	pixman_region32_intersect_rect(&surface->damage, &surface->damage,
-				       0, 0,
-				       surface->width,
-				       surface->height);
-	empty_region(&surface->pending.damage);
+				       0, 0, surface->width, surface->height);
+	empty_region(&state->damage);
 
 	/* wl_surface.set_opaque_region */
-	pixman_region32_init_rect(&opaque, 0, 0,
-				  surface->width,
-				  surface->height);
-	pixman_region32_intersect(&opaque,
-				  &opaque, &surface->pending.opaque);
+	pixman_region32_init(&opaque);
+	pixman_region32_intersect_rect(&opaque, &state->opaque,
+				       0, 0, surface->width, surface->height);
 
 	if (!pixman_region32_equal(&opaque, &surface->opaque)) {
 		pixman_region32_copy(&surface->opaque, &opaque);
@@ -2104,17 +2135,19 @@ weston_surface_commit(struct weston_surface *surface)
 	pixman_region32_fini(&opaque);
 
 	/* wl_surface.set_input_region */
-	pixman_region32_fini(&surface->input);
-	pixman_region32_init_rect(&surface->input, 0, 0,
-				  surface->width,
-				  surface->height);
-	pixman_region32_intersect(&surface->input,
-				  &surface->input, &surface->pending.input);
+	pixman_region32_intersect_rect(&surface->input, &state->input,
+				       0, 0, surface->width, surface->height);
 
 	/* wl_surface.frame */
 	wl_list_insert_list(&surface->frame_callback_list,
-			    &surface->pending.frame_callback_list);
-	wl_list_init(&surface->pending.frame_callback_list);
+			    &state->frame_callback_list);
+	wl_list_init(&state->frame_callback_list);
+}
+
+static void
+weston_surface_commit(struct weston_surface *surface)
+{
+	weston_surface_commit_state(surface, &surface->pending);
 
 	weston_surface_commit_subsurface_order(surface);
 
@@ -2302,73 +2335,15 @@ static void
 weston_subsurface_commit_from_cache(struct weston_subsurface *sub)
 {
 	struct weston_surface *surface = sub->surface;
-	struct weston_view *view;
-	pixman_region32_t opaque;
-
-	/* wl_surface.set_buffer_transform */
-	/* wl_surface.set_buffer_scale */
-	/* wl_viewport.set */
-	surface->buffer_viewport = sub->cached.buffer_viewport;
-
-	/* wl_surface.attach */
-	if (sub->cached.newly_attached)
-		weston_surface_attach(surface, sub->cached.buffer_ref.buffer);
-	weston_buffer_reference(&sub->cached.buffer_ref, NULL);
-
-	if (sub->cached.newly_attached || sub->cached.buffer_viewport.changed) {
-		weston_surface_update_size(surface);
-		if (surface->configure)
-			surface->configure(surface, sub->cached.sx,
-					   sub->cached.sy);
-	}
-
-	sub->cached.sx = 0;
-	sub->cached.sy = 0;
-	sub->cached.newly_attached = 0;
-	sub->cached.buffer_viewport.changed = 0;
-
-	/* wl_surface.damage */
-	pixman_region32_union(&surface->damage, &surface->damage,
-			      &sub->cached.damage);
-	pixman_region32_intersect_rect(&surface->damage, &surface->damage,
-				       0, 0,
-				       surface->width,
-				       surface->height);
-	empty_region(&sub->cached.damage);
-
-	/* wl_surface.set_opaque_region */
-	pixman_region32_init_rect(&opaque, 0, 0,
-				  surface->width,
-				  surface->height);
-	pixman_region32_intersect(&opaque,
-				  &opaque, &sub->cached.opaque);
 
-	if (!pixman_region32_equal(&opaque, &surface->opaque)) {
-		pixman_region32_copy(&surface->opaque, &opaque);
-		wl_list_for_each(view, &surface->views, surface_link)
-			weston_view_geometry_dirty(view);
-	}
-
-	pixman_region32_fini(&opaque);
-
-	/* wl_surface.set_input_region */
-	pixman_region32_fini(&surface->input);
-	pixman_region32_init_rect(&surface->input, 0, 0,
-				  surface->width,
-				  surface->height);
-	pixman_region32_intersect(&surface->input,
-				  &surface->input, &sub->cached.input);
-
-	/* wl_surface.frame */
-	wl_list_insert_list(&surface->frame_callback_list,
-			    &sub->cached.frame_callback_list);
-	wl_list_init(&sub->cached.frame_callback_list);
+	weston_surface_commit_state(surface, &sub->cached);
+	weston_buffer_reference(&sub->cached_buffer_ref, NULL);
 
 	weston_surface_commit_subsurface_order(surface);
 
 	weston_surface_schedule_repaint(surface);
 
-	sub->cached.has_data = 0;
+	sub->has_cached_data = 0;
 }
 
 static void
@@ -2390,7 +2365,9 @@ weston_subsurface_commit_to_cache(struct weston_subsurface *sub)
 
 	if (surface->pending.newly_attached) {
 		sub->cached.newly_attached = 1;
-		weston_buffer_reference(&sub->cached.buffer_ref,
+		weston_surface_state_set_buffer(&sub->cached,
+						surface->pending.buffer);
+		weston_buffer_reference(&sub->cached_buffer_ref,
 					surface->pending.buffer);
 	}
 	sub->cached.sx += surface->pending.sx;
@@ -2413,7 +2390,7 @@ weston_subsurface_commit_to_cache(struct weston_subsurface *sub)
 			    &surface->pending.frame_callback_list);
 	wl_list_init(&surface->pending.frame_callback_list);
 
-	sub->cached.has_data = 1;
+	sub->has_cached_data = 1;
 }
 
 static int
@@ -2442,7 +2419,7 @@ weston_subsurface_commit(struct weston_subsurface *sub)
 	if (weston_subsurface_is_synchronized(sub)) {
 		weston_subsurface_commit_to_cache(sub);
 	} else {
-		if (sub->cached.has_data) {
+		if (sub->has_cached_data) {
 			/* flush accumulated state from cache */
 			weston_subsurface_commit_to_cache(sub);
 			weston_subsurface_commit_from_cache(sub);
@@ -2469,7 +2446,7 @@ weston_subsurface_synchronized_commit(struct weston_subsurface *sub)
 	 * all the way down.
 	 */
 
-	if (sub->cached.has_data)
+	if (sub->has_cached_data)
 		weston_subsurface_commit_from_cache(sub);
 
 	wl_list_for_each(tmp, &surface->subsurface_list, parent_link) {
@@ -2675,30 +2652,6 @@ subsurface_set_desync(struct wl_client *client, struct wl_resource *resource)
 }
 
 static void
-weston_subsurface_cache_init(struct weston_subsurface *sub)
-{
-	pixman_region32_init(&sub->cached.damage);
-	pixman_region32_init(&sub->cached.opaque);
-	pixman_region32_init(&sub->cached.input);
-	wl_list_init(&sub->cached.frame_callback_list);
-	sub->cached.buffer_ref.buffer = NULL;
-}
-
-static void
-weston_subsurface_cache_fini(struct weston_subsurface *sub)
-{
-	struct weston_frame_callback *cb, *tmp;
-
-	wl_list_for_each_safe(cb, tmp, &sub->cached.frame_callback_list, link)
-		wl_resource_destroy(cb->resource);
-
-	weston_buffer_reference(&sub->cached.buffer_ref, NULL);
-	pixman_region32_fini(&sub->cached.damage);
-	pixman_region32_fini(&sub->cached.opaque);
-	pixman_region32_fini(&sub->cached.input);
-}
-
-static void
 weston_subsurface_unlink_parent(struct weston_subsurface *sub)
 {
 	wl_list_remove(&sub->parent_link);
@@ -2800,7 +2753,8 @@ weston_subsurface_destroy(struct weston_subsurface *sub)
 		if (sub->parent)
 			weston_subsurface_unlink_parent(sub);
 
-		weston_subsurface_cache_fini(sub);
+		weston_surface_state_fini(&sub->cached);
+		weston_buffer_reference(&sub->cached_buffer_ref, NULL);
 
 		sub->surface->configure = NULL;
 		sub->surface->configure_private = NULL;
@@ -2849,7 +2803,7 @@ weston_subsurface_create(uint32_t id, struct weston_surface *surface,
 				       sub, subsurface_resource_destroy);
 	weston_subsurface_link_surface(sub, surface);
 	weston_subsurface_link_parent(sub, parent);
-	weston_subsurface_cache_init(sub);
+	weston_surface_state_init(&sub->cached);
 	sub->synchronized = 1;
 
 	return sub;
diff --git a/src/compositor.h b/src/compositor.h
index 06f8b03..bef5e1d 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -789,6 +789,32 @@ struct weston_view {
 	uint32_t output_mask;
 };
 
+struct weston_surface_state {
+	/* wl_surface.attach */
+	int newly_attached;
+	struct weston_buffer *buffer;
+	struct wl_listener buffer_destroy_listener;
+	int32_t sx;
+	int32_t sy;
+
+	/* wl_surface.damage */
+	pixman_region32_t damage;
+
+	/* wl_surface.set_opaque_region */
+	pixman_region32_t opaque;
+
+	/* wl_surface.set_input_region */
+	pixman_region32_t input;
+
+	/* wl_surface.frame */
+	struct wl_list frame_callback_list;
+
+	/* wl_surface.set_buffer_transform */
+	/* wl_surface.set_scaling_factor */
+	/* wl_viewport.set */
+	struct weston_buffer_viewport buffer_viewport;
+};
+
 struct weston_surface {
 	struct wl_resource *resource;
 	struct wl_signal destroy_signal;
@@ -833,31 +859,7 @@ struct weston_surface {
 	struct wl_resource *viewport_resource;
 
 	/* All the pending state, that wl_surface.commit will apply. */
-	struct {
-		/* wl_surface.attach */
-		int newly_attached;
-		struct weston_buffer *buffer;
-		struct wl_listener buffer_destroy_listener;
-		int32_t sx;
-		int32_t sy;
-
-		/* wl_surface.damage */
-		pixman_region32_t damage;
-
-		/* wl_surface.set_opaque_region */
-		pixman_region32_t opaque;
-
-		/* wl_surface.set_input_region */
-		pixman_region32_t input;
-
-		/* wl_surface.frame */
-		struct wl_list frame_callback_list;
-
-		/* wl_surface.set_buffer_transform */
-		/* wl_surface.set_scaling_factor */
-		/* wl_viewport.set */
-		struct weston_buffer_viewport buffer_viewport;
-	} pending;
+	struct weston_surface_state pending;
 
 	/*
 	 * If non-NULL, this function will be called on
@@ -895,31 +897,9 @@ struct weston_subsurface {
 		int set;
 	} position;
 
-	struct {
-		int has_data;
-
-		/* wl_surface.attach */
-		int newly_attached;
-		struct weston_buffer_reference buffer_ref;
-		int32_t sx;
-		int32_t sy;
-
-		/* wl_surface.damage */
-		pixman_region32_t damage;
-
-		/* wl_surface.set_opaque_region */
-		pixman_region32_t opaque;
-
-		/* wl_surface.set_input_region */
-		pixman_region32_t input;
-
-		/* wl_surface.frame */
-		struct wl_list frame_callback_list;
-
-		/* wl_surface.set_buffer_transform */
-		/* wl_surface.set_buffer_scale */
-		struct weston_buffer_viewport buffer_viewport;
-	} cached;
+	int has_cached_data;
+	struct weston_surface_state cached;
+	struct weston_buffer_reference cached_buffer_ref;
 
 	int synchronized;
 
-- 
2.0.0



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