Implement the presentation-time protocol

include/sway/output.h

@@ -40,6 +40,7 @@ struct sway_output {
 	struct wl_listener mode;
 	struct wl_listener transform;
 	struct wl_listener scale;
+	struct wl_listener present;
 	struct wl_listener damage_destroy;
 	struct wl_listener damage_frame;
 

include/sway/server.h

@@ -8,12 +8,12 @@
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_data_device.h>
 #include <wlr/types/wlr_layer_shell_v1.h>
+#include <wlr/types/wlr_presentation_time.h>
 #include <wlr/types/wlr_server_decoration.h>
 #include <wlr/types/wlr_xdg_shell_v6.h>
 #include <wlr/types/wlr_xdg_shell.h>
-// TODO WLR: make Xwayland optional
-#include "list.h"
 #include "config.h"
+#include "list.h"
 #ifdef HAVE_XWAYLAND
 #include "sway/xwayland.h"
 #endif
@@ -58,6 +58,8 @@ struct sway_server {
 	struct wl_listener xdg_decoration;
 	struct wl_list xdg_decorations; // sway_xdg_decoration::link
 
+	struct wlr_presentation *presentation;
+
 	size_t txn_timeout_ms;
 	list_t *transactions;
 	list_t *dirty_nodes;

sway/desktop/output.c

@@ -11,10 +11,11 @@
 #include <wlr/types/wlr_output_damage.h>
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_output.h>
+#include <wlr/types/wlr_presentation_time.h>
 #include <wlr/types/wlr_surface.h>
 #include <wlr/util/region.h>
-#include "log.h"
 #include "config.h"
+#include "log.h"
 #include "sway/config.h"
 #include "sway/desktop/transaction.h"
 #include "sway/input/input-manager.h"
@@ -223,6 +224,75 @@ void output_drag_icons_for_each_surface(struct sway_output *output,
 	}
 }
 
+static void for_each_surface_container_iterator(struct sway_container *con,
+		void *_data) {
+	if (!con->view || !view_is_visible(con->view)) {
+		return;
+	}
+
+	struct surface_iterator_data *data = _data;
+	output_view_for_each_surface(data->output, con->view,
+		data->user_iterator, data->user_data);
+}
+
+static void output_for_each_surface(struct sway_output *output,
+		sway_surface_iterator_func_t iterator, void *user_data) {
+	if (output_has_opaque_overlay_layer_surface(output)) {
+		goto overlay;
+	}
+
+	struct surface_iterator_data data = {
+		.user_iterator = iterator,
+		.user_data = user_data,
+		.output = output,
+	};
+
+	struct sway_workspace *workspace = output_get_active_workspace(output);
+	if (workspace->current.fullscreen) {
+		for_each_surface_container_iterator(
+			workspace->current.fullscreen, &data);
+		container_for_each_child(workspace->current.fullscreen,
+			for_each_surface_container_iterator, &data);
+		for (int i = 0; i < workspace->current.floating->length; ++i) {
+			struct sway_container *floater =
+				workspace->current.floating->items[i];
+			if (container_is_transient_for(floater,
+					workspace->current.fullscreen)) {
+				for_each_surface_container_iterator(floater, &data);
+			}
+		}
+#ifdef HAVE_XWAYLAND
+		output_unmanaged_for_each_surface(output, &root->xwayland_unmanaged,
+			iterator, user_data);
+#endif
+	} else {
+		output_layer_for_each_surface(output,
+			&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
+			iterator, user_data);
+		output_layer_for_each_surface(output,
+			&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
+			iterator, user_data);
+
+		workspace_for_each_container(workspace,
+			for_each_surface_container_iterator, &data);
+
+#ifdef HAVE_XWAYLAND
+		output_unmanaged_for_each_surface(output, &root->xwayland_unmanaged,
+			iterator, user_data);
+#endif
+		output_layer_for_each_surface(output,
+			&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
+			iterator, user_data);
+	}
+
+overlay:
+	output_layer_for_each_surface(output,
+		&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
+		iterator, user_data);
+	output_drag_icons_for_each_surface(output, &root->drag_icons,
+		iterator, user_data);
+}
+
 static int scale_length(int length, int offset, float scale) {
 	return round((offset + length) * scale) - round(offset * scale);
 }
@@ -274,96 +344,13 @@ bool output_has_opaque_overlay_layer_surface(struct sway_output *output) {
 
 static void send_frame_done_iterator(struct sway_output *output,
 		struct wlr_surface *surface, struct wlr_box *box, float rotation,
-		void *_data) {
+		void *data) {
-	struct timespec *when = _data;
+	struct timespec *when = data;
 	wlr_surface_send_frame_done(surface, when);
 }
 
-static void send_frame_done_layer(struct sway_output *output,
-		struct wl_list *layer_surfaces, struct timespec *when) {
-	output_layer_for_each_surface(output, layer_surfaces,
-		send_frame_done_iterator, when);
-}
-
-#ifdef HAVE_XWAYLAND
-static void send_frame_done_unmanaged(struct sway_output *output,
-		struct wl_list *unmanaged, struct timespec *when) {
-	output_unmanaged_for_each_surface(output, unmanaged,
-		send_frame_done_iterator, when);
-}
-#endif
-
-static void send_frame_done_drag_icons(struct sway_output *output,
-		struct wl_list *drag_icons, struct timespec *when) {
-	output_drag_icons_for_each_surface(output, drag_icons,
-		send_frame_done_iterator, when);
-}
-
-struct send_frame_done_data {
-	struct sway_output *output;
-	struct timespec *when;
-};
-
-static void send_frame_done_container_iterator(struct sway_container *con,
-		void *_data) {
-	if (!con->view) {
-		return;
-	}
-	if (!view_is_visible(con->view)) {
-		return;
-	}
-
-	struct send_frame_done_data *data = _data;
-	output_view_for_each_surface(data->output, con->view,
-		send_frame_done_iterator, data->when);
-}
-
 static void send_frame_done(struct sway_output *output, struct timespec *when) {
-	if (output_has_opaque_overlay_layer_surface(output)) {
+	output_for_each_surface(output, send_frame_done_iterator, when);
-		goto send_frame_overlay;
-	}
-
-	struct send_frame_done_data data = {
-		.output = output,
-		.when = when,
-	};
-	struct sway_workspace *workspace = output_get_active_workspace(output);
-	if (workspace->current.fullscreen) {
-		send_frame_done_container_iterator(
-				workspace->current.fullscreen, &data);
-		container_for_each_child(workspace->current.fullscreen,
-				send_frame_done_container_iterator, &data);
-		for (int i = 0; i < workspace->current.floating->length; ++i) {
-			struct sway_container *floater =
-				workspace->current.floating->items[i];
-			if (container_is_transient_for(floater,
-						workspace->current.fullscreen)) {
-				send_frame_done_container_iterator(floater, &data);
-			}
-		}
-#ifdef HAVE_XWAYLAND
-		send_frame_done_unmanaged(output, &root->xwayland_unmanaged, when);
-#endif
-	} else {
-		send_frame_done_layer(output,
-			&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND], when);
-		send_frame_done_layer(output,
-			&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM], when);
-
-		workspace_for_each_container(workspace,
-				send_frame_done_container_iterator, &data);
-
-#ifdef HAVE_XWAYLAND
-		send_frame_done_unmanaged(output, &root->xwayland_unmanaged, when);
-#endif
-		send_frame_done_layer(output,
-			&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP], when);
-	}
-
-send_frame_overlay:
-	send_frame_done_layer(output,
-		&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY], when);
-	send_frame_done_drag_icons(output, &root->drag_icons, when);
 }
 
 static void damage_handle_frame(struct wl_listener *listener, void *data) {
@@ -545,6 +532,29 @@ static void handle_scale(struct wl_listener *listener, void *data) {
 	transaction_commit_dirty();
 }
 
+static void send_presented_iterator(struct sway_output *output,
+		struct wlr_surface *surface, struct wlr_box *box, float rotation,
+		void *data) {
+	struct wlr_presentation_event *event = data;
+	wlr_presentation_send_surface_presented(server.presentation,
+		surface, event);
+}
+
+static void handle_present(struct wl_listener *listener, void *data) {
+	struct sway_output *output = wl_container_of(listener, output, present);
+	struct wlr_output_event_present *output_event = data;
+
+	struct wlr_presentation_event event = {
+		.output = output->wlr_output,
+		.tv_sec = (uint64_t)output_event->when->tv_sec,
+		.tv_nsec = (uint32_t)output_event->when->tv_nsec,
+		.refresh = (uint32_t)output_event->refresh,
+		.seq = (uint64_t)output_event->seq,
+		.flags = output_event->flags,
+	};
+	output_for_each_surface(output, send_presented_iterator, &event);
+}
+
 void handle_new_output(struct wl_listener *listener, void *data) {
 	struct sway_server *server = wl_container_of(listener, server, new_output);
 	struct wlr_output *wlr_output = data;
@@ -571,6 +581,7 @@ void output_add_listeners(struct sway_output *output) {
 	output->mode.notify = handle_mode;
 	output->transform.notify = handle_transform;
 	output->scale.notify = handle_scale;
+	output->present.notify = handle_present;
 	output->damage_frame.notify = damage_handle_frame;
 	output->damage_destroy.notify = damage_handle_destroy;
 }

sway/server.c

@@ -135,6 +135,9 @@ bool server_init(struct sway_server *server) {
 	server->xdg_decoration.notify = handle_xdg_decoration;
 	wl_list_init(&server->xdg_decorations);
 
+	server->presentation =
+		wlr_presentation_create(server->wl_display, server->backend);
+
 	wlr_export_dmabuf_manager_v1_create(server->wl_display);
 	wlr_screencopy_manager_v1_create(server->wl_display);
 

sway/tree/output.c

@@ -103,6 +103,7 @@ void output_enable(struct sway_output *output, struct output_config *oc) {
 	wl_signal_add(&wlr_output->events.mode, &output->mode);
 	wl_signal_add(&wlr_output->events.transform, &output->transform);
 	wl_signal_add(&wlr_output->events.scale, &output->scale);
+	wl_signal_add(&wlr_output->events.present, &output->present);
 	wl_signal_add(&output->damage->events.frame, &output->damage_frame);
 	wl_signal_add(&output->damage->events.destroy, &output->damage_destroy);
 
@@ -214,6 +215,7 @@ void output_disable(struct sway_output *output) {
 	wl_list_remove(&output->mode.link);
 	wl_list_remove(&output->transform.link);
 	wl_list_remove(&output->scale.link);
+	wl_list_remove(&output->present.link);
 	wl_list_remove(&output->damage_destroy.link);
 	wl_list_remove(&output->damage_frame.link);