output: refactor backend API

This updates the backend part of the output API. This is mostly renaming:
make_current becomes attach_render and swap_buffers becomes commit.

This also fixes the RDP backend to support NULL damage.

14 files changed, 133 insertions, 105 deletions

diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index f86f63b8..f97166f1 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -238,14 +238,13 @@ static struct wlr_drm_connector *get_drm_connector_from_output(
 	return (struct wlr_drm_connector *)wlr_output;
 }
 
-static bool drm_connector_make_current(struct wlr_output *output,
+static bool drm_connector_attach_render(struct wlr_output *output,
 		int *buffer_age) {
 	struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
 	return make_drm_surface_current(&conn->crtc->primary->surf, buffer_age);
 }
 
-static bool drm_connector_swap_buffers(struct wlr_output *output,
-		pixman_region32_t *damage) {
+static bool drm_connector_commit(struct wlr_output *output) {
 	struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
 	struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
 	if (!drm->session->active) {
@@ -258,6 +257,11 @@ static bool drm_connector_swap_buffers(struct wlr_output *output,
 	}
 	struct wlr_drm_plane *plane = crtc->primary;
 
+	pixman_region32_t *damage = NULL;
+	if (output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {
+		damage = &output->pending.damage;
+	}
+
 	struct gbm_bo *bo = swap_drm_surface_buffers(&plane->surf, damage);
 	if (drm->parent) {
 		bo = copy_drm_surface_mgpu(&plane->mgpu_surf, bo);
@@ -334,7 +338,7 @@ bool set_drm_connector_gamma(struct wlr_output *output, size_t size,
 
 	bool ok = drm->iface->crtc_set_gamma(drm, conn->crtc, size, _r, _g, _b);
 	if (ok) {
-		wlr_output_update_needs_swap(output);
+		wlr_output_update_needs_commit(output);
 
 		free(conn->crtc->gamma_table);
 		conn->crtc->gamma_table = gamma_table;
@@ -673,7 +677,7 @@ static bool drm_connector_set_cursor(struct wlr_output *output,
 			return false;
 		}
 
-		wlr_output_update_needs_swap(output);
+		wlr_output_update_needs_commit(output);
 	}
 
 	if (!update_texture) {
@@ -733,7 +737,7 @@ static bool drm_connector_set_cursor(struct wlr_output *output,
 	}
 	bool ok = drm->iface->crtc_set_cursor(drm, crtc, bo);
 	if (ok) {
-		wlr_output_update_needs_swap(output);
+		wlr_output_update_needs_commit(output);
 	}
 	return ok;
 }
@@ -770,7 +774,7 @@ static bool drm_connector_move_cursor(struct wlr_output *output,
 
 	bool ok = drm->iface->crtc_move_cursor(drm, conn->crtc, box.x, box.y);
 	if (ok) {
-		wlr_output_update_needs_swap(output);
+		wlr_output_update_needs_commit(output);
 	}
 	return ok;
 }
@@ -832,8 +836,8 @@ static const struct wlr_output_impl output_impl = {
 	.set_cursor = drm_connector_set_cursor,
 	.move_cursor = drm_connector_move_cursor,
 	.destroy = drm_connector_destroy,
-	.make_current = drm_connector_make_current,
-	.swap_buffers = drm_connector_swap_buffers,
+	.attach_render = drm_connector_attach_render,
+	.commit = drm_connector_commit,
 	.set_gamma = set_drm_connector_gamma,
 	.get_gamma_size = drm_connector_get_gamma_size,
 	.export_dmabuf = drm_connector_export_dmabuf,
@@ -1431,7 +1435,7 @@ static void drm_connector_cleanup(struct wlr_drm_connector *conn) {
 			wl_event_source_remove(conn->output.idle_frame);
 			conn->output.idle_frame = NULL;
 		}
-		conn->output.needs_swap = false;
+		conn->output.needs_commit = false;
 		conn->output.frame_pending = false;
 
 		/* Fallthrough */
diff --git a/backend/headless/output.c b/backend/headless/output.c
index 6d3b6f96..0073cb33 100644
--- a/backend/headless/output.c
+++ b/backend/headless/output.c
@@ -56,15 +56,15 @@ static void output_transform(struct wlr_output *wlr_output,
 	output->wlr_output.transform = transform;
 }
 
-static bool output_make_current(struct wlr_output *wlr_output, int *buffer_age) {
+static bool output_attach_render(struct wlr_output *wlr_output,
+		int *buffer_age) {
 	struct wlr_headless_output *output =
 		headless_output_from_output(wlr_output);
 	return wlr_egl_make_current(&output->backend->egl, output->egl_surface,
 		buffer_age);
 }
 
-static bool output_swap_buffers(struct wlr_output *wlr_output,
-		pixman_region32_t *damage) {
+static bool output_commit(struct wlr_output *wlr_output) {
 	// Nothing needs to be done for pbuffers
 	wlr_output_send_present(wlr_output, NULL);
 	return true;
@@ -86,8 +86,8 @@ static const struct wlr_output_impl output_impl = {
 	.set_custom_mode = output_set_custom_mode,
 	.transform = output_transform,
 	.destroy = output_destroy,
-	.make_current = output_make_current,
-	.swap_buffers = output_swap_buffers,
+	.attach_render = output_attach_render,
+	.commit = output_commit,
 };
 
 bool wlr_output_is_headless(struct wlr_output *wlr_output) {
diff --git a/backend/noop/output.c b/backend/noop/output.c
index 5d9aa90d..7273095d 100644
--- a/backend/noop/output.c
+++ b/backend/noop/output.c
@@ -23,12 +23,12 @@ static bool output_set_custom_mode(struct wlr_output *wlr_output,
 	return true;
 }
 
-static bool output_make_current(struct wlr_output *wlr_output, int *buffer_age) {
+static bool output_attach_render(struct wlr_output *wlr_output,
+		int *buffer_age) {
 	return true;
 }
 
-static bool output_swap_buffers(struct wlr_output *wlr_output,
-		pixman_region32_t *damage) {
+static bool output_commit(struct wlr_output *wlr_output) {
 	return true;
 }
 
@@ -45,8 +45,8 @@ static const struct wlr_output_impl output_impl = {
 	.transform = output_transform,
 	.set_custom_mode = output_set_custom_mode,
 	.destroy = output_destroy,
-	.make_current = output_make_current,
-	.swap_buffers = output_swap_buffers,
+	.attach_render = output_attach_render,
+	.commit = output_commit,
 };
 
 bool wlr_output_is_noop(struct wlr_output *wlr_output) {
diff --git a/backend/rdp/output.c b/backend/rdp/output.c
index 4d5d259d..5e20dda4 100644
--- a/backend/rdp/output.c
+++ b/backend/rdp/output.c
@@ -69,7 +69,8 @@ static void output_transform(struct wlr_output *wlr_output,
 	output->wlr_output.transform = transform;
 }
 
-static bool output_make_current(struct wlr_output *wlr_output, int *buffer_age) {
+static bool output_attach_render(struct wlr_output *wlr_output,
+		int *buffer_age) {
 	struct wlr_rdp_output *output =
 		rdp_output_from_output(wlr_output);
 	return wlr_egl_make_current(&output->backend->egl, output->egl_surface,
@@ -169,31 +170,39 @@ static bool nsc_swap_buffers(
 	return true;
 }
 
-static bool output_swap_buffers(
-		struct wlr_output *wlr_output, pixman_region32_t *damage) {
-	if (!pixman_region32_not_empty(damage)) {
-		return true;
-	}
-
+static bool output_commit(struct wlr_output *wlr_output) {
 	struct wlr_rdp_output *output =
 		rdp_output_from_output(wlr_output);
+	bool ret = false;
 
-	// Update shadow buffer
+	pixman_region32_t output_region;
+	pixman_region32_init(&output_region);
+	pixman_region32_union_rect(&output_region, &output_region,
+		0, 0, wlr_output->width, wlr_output->height);
+
+	pixman_region32_t *damage = &output_region;
+	if (wlr_output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {
+		damage = &wlr_output->pending.damage;
+	}
+
+	int x = damage->extents.x1;
+	int y = damage->extents.y1;
 	int width = damage->extents.x2 - damage->extents.x1;
 	int height = damage->extents.y2 - damage->extents.y1;
+
+	// Update shadow buffer
 	struct wlr_renderer *renderer =
 		wlr_backend_get_renderer(&output->backend->backend);
 	// TODO performance: add support for flags
-	if (!wlr_renderer_read_pixels(renderer, WL_SHM_FORMAT_XRGB8888,
-				NULL, pixman_image_get_stride(output->shadow_surface),
-				width, height, damage->extents.x1, damage->extents.y1,
-				damage->extents.x1, damage->extents.y1,
-				pixman_image_get_data(output->shadow_surface))) {
-		return false;
+	ret = wlr_renderer_read_pixels(renderer, WL_SHM_FORMAT_XRGB8888,
+		NULL, pixman_image_get_stride(output->shadow_surface),
+		width, height, x, y, x, y,
+		pixman_image_get_data(output->shadow_surface));
+	if (!ret) {
+		goto out;
 	}
 
 	// Send along to clients
-	bool ret = false;
 	rdpSettings *settings = output->context->peer->settings;
 	if (settings->RemoteFxCodec) {
 		ret = rfx_swap_buffers(output, damage);
@@ -202,8 +211,16 @@ static bool output_swap_buffers(
 	} else {
 		// This would perform like ass so why bother
 		wlr_log(WLR_ERROR, "Raw updates are not supported; use rfx or nsc");
+		ret = false;
 	}
+	if (!ret) {
+		goto out;
+	}
+
 	wlr_output_send_present(wlr_output, NULL);
+
+out:
+	pixman_region32_fini(&output_region);
 	return ret;
 }
 
@@ -224,8 +241,8 @@ static const struct wlr_output_impl output_impl = {
 	.set_custom_mode = output_set_custom_mode,
 	.transform = output_transform,
 	.destroy = output_destroy,
-	.make_current = output_make_current,
-	.swap_buffers = output_swap_buffers,
+	.attach_render = output_attach_render,
+	.commit = output_commit,
 };
 
 bool wlr_output_is_rdp(struct wlr_output *wlr_output) {
diff --git a/backend/wayland/output.c b/backend/wayland/output.c
index 64ead4ac..2eaaaf9c 100644
--- a/backend/wayland/output.c
+++ b/backend/wayland/output.c
@@ -50,7 +50,7 @@ static bool output_set_custom_mode(struct wlr_output *wlr_output,
 	return true;
 }
 
-static bool output_make_current(struct wlr_output *wlr_output,
+static bool output_attach_render(struct wlr_output *wlr_output,
 		int *buffer_age) {
 	struct wlr_wl_output *output =
 		get_wl_output_from_output(wlr_output);
@@ -58,8 +58,7 @@ static bool output_make_current(struct wlr_output *wlr_output,
 		buffer_age);
 }
 
-static bool output_swap_buffers(struct wlr_output *wlr_output,
-		pixman_region32_t *damage) {
+static bool output_commit(struct wlr_output *wlr_output) {
 	struct wlr_wl_output *output =
 		get_wl_output_from_output(wlr_output);
 
@@ -71,6 +70,11 @@ static bool output_swap_buffers(struct wlr_output *wlr_output,
 	output->frame_callback = wl_surface_frame(output->surface);
 	wl_callback_add_listener(output->frame_callback, &frame_listener, output);
 
+	pixman_region32_t *damage = NULL;
+	if (wlr_output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {
+		damage = &wlr_output->pending.damage;
+	}
+
 	if (!wlr_egl_swap_buffers(&output->backend->egl,
 			output->egl_surface, damage)) {
 		return false;
@@ -220,8 +224,8 @@ static const struct wlr_output_impl output_impl = {
 	.set_custom_mode = output_set_custom_mode,
 	.transform = output_transform,
 	.destroy = output_destroy,
-	.make_current = output_make_current,
-	.swap_buffers = output_swap_buffers,
+	.attach_render = output_attach_render,
+	.commit = output_commit,
 	.set_cursor = output_set_cursor,
 	.move_cursor = output_move_cursor,
 	.schedule_frame = output_schedule_frame,
diff --git a/backend/x11/backend.c b/backend/x11/backend.c
index 38715631..ddd8ab77 100644
--- a/backend/x11/backend.c
+++ b/backend/x11/backend.c
@@ -46,7 +46,7 @@ static void handle_x11_event(struct wlr_x11_backend *x11,
 		struct wlr_x11_output *output =
 			get_x11_output_from_window_id(x11, ev->window);
 		if (output != NULL) {
-			wlr_output_update_needs_swap(&output->wlr_output);
+			wlr_output_update_needs_commit(&output->wlr_output);
 		}
 		break;
 	}
diff --git a/backend/x11/output.c b/backend/x11/output.c
index a9bd5c0a..8ee15d51 100644
--- a/backend/x11/output.c
+++ b/backend/x11/output.c
@@ -95,7 +95,7 @@ static void output_destroy(struct wlr_output *wlr_output) {
 	free(output);
 }
 
-static bool output_make_current(struct wlr_output *wlr_output,
+static bool output_attach_render(struct wlr_output *wlr_output,
 		int *buffer_age) {
 	struct wlr_x11_output *output = get_x11_output_from_output(wlr_output);
 	struct wlr_x11_backend *x11 = output->x11;
@@ -103,11 +103,15 @@ static bool output_make_current(struct wlr_output *wlr_output,
 	return wlr_egl_make_current(&x11->egl, output->surf, buffer_age);
 }
 
-static bool output_swap_buffers(struct wlr_output *wlr_output,
-		pixman_region32_t *damage) {
-	struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
+static bool output_commit(struct wlr_output *wlr_output) {
+	struct wlr_x11_output *output = get_x11_output_from_output(wlr_output);
 	struct wlr_x11_backend *x11 = output->x11;
 
+	pixman_region32_t *damage = NULL;
+	if (wlr_output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {
+		damage = &wlr_output->pending.damage;
+	}
+
 	if (!wlr_egl_swap_buffers(&x11->egl, output->surf, damage)) {
 		return false;
 	}
@@ -120,8 +124,8 @@ static const struct wlr_output_impl output_impl = {
 	.set_custom_mode = output_set_custom_mode,
 	.transform = output_transform,
 	.destroy = output_destroy,
-	.make_current = output_make_current,
-	.swap_buffers = output_swap_buffers,
+	.attach_render = output_attach_render,
+	.commit = output_commit,
 };
 
 struct wlr_output *wlr_x11_output_create(struct wlr_backend *backend) {
diff --git a/include/wlr/interfaces/wlr_output.h b/include/wlr/interfaces/wlr_output.h
index f7ffe3b4..283afe66 100644
--- a/include/wlr/interfaces/wlr_output.h
+++ b/include/wlr/interfaces/wlr_output.h
@@ -26,8 +26,8 @@ struct wlr_output_impl {
 		int32_t hotspot_x, int32_t hotspot_y, bool update_texture);
 	bool (*move_cursor)(struct wlr_output *output, int x, int y);
 	void (*destroy)(struct wlr_output *output);
-	bool (*make_current)(struct wlr_output *output, int *buffer_age);
-	bool (*swap_buffers)(struct wlr_output *output, pixman_region32_t *damage);
+	bool (*attach_render)(struct wlr_output *output, int *buffer_age);
+	bool (*commit)(struct wlr_output *output);
 	bool (*set_gamma)(struct wlr_output *output, size_t size,
 		const uint16_t *r, const uint16_t *g, const uint16_t *b);
 	size_t (*get_gamma_size)(struct wlr_output *output);
@@ -43,7 +43,7 @@ void wlr_output_update_mode(struct wlr_output *output,
 void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width,
 	int32_t height, int32_t refresh);
 void wlr_output_update_enabled(struct wlr_output *output, bool enabled);
-void wlr_output_update_needs_swap(struct wlr_output *output);
+void wlr_output_update_needs_commit(struct wlr_output *output);
 void wlr_output_damage_whole(struct wlr_output *output);
 void wlr_output_send_frame(struct wlr_output *output);
 void wlr_output_send_present(struct wlr_output *output,
diff --git a/include/wlr/types/wlr_output.h b/include/wlr/types/wlr_output.h
index cd34dc99..b2f4cff9 100644
--- a/include/wlr/types/wlr_output.h
+++ b/include/wlr/types/wlr_output.h
@@ -97,7 +97,7 @@ struct wlr_output {
 	enum wl_output_subpixel subpixel;
 	enum wl_output_transform transform;
 
-	bool needs_swap;
+	bool needs_commit;
 	// damage for cursors and fullscreen surface, in output-local coordinates
 	pixman_region32_t damage;
 	bool frame_pending;
@@ -110,7 +110,7 @@ struct wlr_output {
 		struct wl_signal frame;
 		// Emitted when buffers need to be swapped (because software cursors or
 		// fullscreen damage or because of backend-specific logic)
-		struct wl_signal needs_swap;
+		struct wl_signal needs_commit;
 		// Emitted right before buffer swap
 		struct wl_signal swap_buffers; // wlr_output_event_swap_buffers
 		// Emitted right after the buffer has been presented to the user
diff --git a/include/wlr/types/wlr_output_damage.h b/include/wlr/types/wlr_output_damage.h
index d614e6d6..68f518d9 100644
--- a/include/wlr/types/wlr_output_damage.h
+++ b/include/wlr/types/wlr_output_damage.h
@@ -48,7 +48,7 @@ struct wlr_output_damage {
 	struct wl_listener output_mode;
 	struct wl_listener output_transform;
 	struct wl_listener output_scale;
-	struct wl_listener output_needs_swap;
+	struct wl_listener output_needs_commit;
 	struct wl_listener output_frame;
 };
 
diff --git a/types/wlr_output.c b/types/wlr_output.c
index c9b2689e..26ccb779 100644
--- a/types/wlr_output.c
+++ b/types/wlr_output.c
@@ -260,7 +260,7 @@ static void handle_display_destroy(struct wl_listener *listener, void *data) {
 
 void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
 		const struct wlr_output_impl *impl, struct wl_display *display) {
-	assert(impl->make_current && impl->swap_buffers && impl->transform);
+	assert(impl->attach_render && impl->commit && impl->transform);
 	if (impl->set_cursor || impl->move_cursor) {
 		assert(impl->set_cursor && impl->move_cursor);
 	}
@@ -273,7 +273,7 @@ void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
 	wl_list_init(&output->cursors);
 	wl_list_init(&output->resources);
 	wl_signal_init(&output->events.frame);
-	wl_signal_init(&output->events.needs_swap);
+	wl_signal_init(&output->events.needs_commit);
 	wl_signal_init(&output->events.swap_buffers);
 	wl_signal_init(&output->events.present);
 	wl_signal_init(&output->events.enable);
@@ -363,7 +363,7 @@ struct wlr_output_mode *wlr_output_preferred_mode(struct wlr_output *output) {
 }
 
 bool wlr_output_attach_render(struct wlr_output *output, int *buffer_age) {
-	if (!output->impl->make_current(output, buffer_age)) {
+	if (!output->impl->attach_render(output, buffer_age)) {
 		return false;
 	}
 
@@ -373,7 +373,7 @@ bool wlr_output_attach_render(struct wlr_output *output, int *buffer_age) {
 
 bool wlr_output_preferred_read_format(struct wlr_output *output,
 		enum wl_shm_format *fmt) {
-	if (!output->impl->make_current(output, NULL)) {
+	if (!output->impl->attach_render(output, NULL)) {
 		return false;
 	}
 
@@ -407,43 +407,41 @@ bool wlr_output_commit(struct wlr_output *output) {
 		output->idle_frame = NULL;
 	}
 
-	if (output->pending.committed & WLR_OUTPUT_STATE_BUFFER) {
-		struct timespec now;
-		clock_gettime(CLOCK_MONOTONIC, &now);
-
-		pixman_region32_t *damage = NULL;
-		if (output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {
-			damage = &output->pending.damage;
-		}
+	if (!(output->pending.committed & WLR_OUTPUT_STATE_BUFFER)) {
+		wlr_log(WLR_ERROR, "Tried to commit without attaching a buffer");
+		return false;
+	}
 
-		struct wlr_output_event_swap_buffers event = {
-			.output = output,
-			.when = &now,
-			.damage = damage,
-		};
-		wlr_signal_emit_safe(&output->events.swap_buffers, &event);
+	struct timespec now;
+	clock_gettime(CLOCK_MONOTONIC, &now);
 
-		if (!output->impl->swap_buffers(output, damage)) {
-			return false;
-		}
+	pixman_region32_t *damage = NULL;
+	if (output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {
+		damage = &output->pending.damage;
+	}
 
-		struct wlr_output_cursor *cursor;
-		wl_list_for_each(cursor, &output->cursors, link) {
-			if (!cursor->enabled || !cursor->visible || cursor->surface == NULL) {
-				continue;
-			}
-			wlr_surface_send_frame_done(cursor->surface, &now);
-		}
+	struct wlr_output_event_swap_buffers event = {
+		.output = output,
+		.when = &now,
+		.damage = damage,
+	};
+	wlr_signal_emit_safe(&output->events.swap_buffers, &event);
 
-		output->frame_pending = true;
-		output->needs_swap = false;
-		output_state_clear(&output->pending);
-		return true;
-	} else {
-		wlr_log(WLR_ERROR, "Tried to commit without attaching a buffer");
+	if (!output->impl->commit(output)) {
 		return false;
 	}
 
+	struct wlr_output_cursor *cursor;
+	wl_list_for_each(cursor, &output->cursors, link) {
+		if (!cursor->enabled || !cursor->visible || cursor->surface == NULL) {
+			continue;
+		}
+		wlr_surface_send_frame_done(cursor->surface, &now);
+	}
+
+	output->frame_pending = true;
+	output->needs_commit = false;
+	output_state_clear(&output->pending);
 	return true;
 }
 
@@ -522,9 +520,9 @@ bool wlr_output_export_dmabuf(struct wlr_output *output,
 	return output->impl->export_dmabuf(output, attribs);
 }
 
-void wlr_output_update_needs_swap(struct wlr_output *output) {
-	output->needs_swap = true;
-	wlr_signal_emit_safe(&output->events.needs_swap, output);
+void wlr_output_update_needs_commit(struct wlr_output *output) {
+	output->needs_commit = true;
+	wlr_signal_emit_safe(&output->events.needs_commit, output);
 }
 
 void wlr_output_damage_whole(struct wlr_output *output) {
@@ -533,7 +531,7 @@ void wlr_output_damage_whole(struct wlr_output *output) {
 
 	pixman_region32_union_rect(&output->damage, &output->damage, 0, 0,
 		width, height);
-	wlr_output_update_needs_swap(output);
+	wlr_output_update_needs_commit(output);
 }
 
 struct wlr_output *wlr_output_from_resource(struct wl_resource *resource) {
@@ -679,7 +677,7 @@ static void output_cursor_damage_whole(struct wlr_output_cursor *cursor) {
 	output_cursor_get_box(cursor, &box);
 	pixman_region32_union_rect(&cursor->output->damage, &cursor->output->damage,
 		box.x, box.y, box.width, box.height);
-	wlr_output_update_needs_swap(cursor->output);
+	wlr_output_update_needs_commit(cursor->output);
 }
 
 static void output_cursor_reset(struct wlr_output_cursor *cursor) {
diff --git a/types/wlr_output_damage.c b/types/wlr_output_damage.c
index d7949769..952814d3 100644
--- a/types/wlr_output_damage.c
+++ b/types/wlr_output_damage.c
@@ -31,9 +31,10 @@ static void output_handle_scale(struct wl_listener *listener, void *data) {
 	wlr_output_damage_add_whole(output_damage);
 }
 
-static void output_handle_needs_swap(struct wl_listener *listener, void *data) {
+static void output_handle_needs_commit(struct wl_listener *listener,
+		void *data) {
 	struct wlr_output_damage *output_damage =
-		wl_container_of(listener, output_damage, output_needs_swap);
+		wl_container_of(listener, output_damage, output_needs_commit);
 	pixman_region32_union(&output_damage->current, &output_damage->current,
 		&output_damage->output->damage);
 	wlr_output_schedule_frame(output_damage->output);
@@ -75,8 +76,8 @@ struct wlr_output_damage *wlr_output_damage_create(struct wlr_output *output) {
 	output_damage->output_transform.notify = output_handle_transform;
 	wl_signal_add(&output->events.scale, &output_damage->output_scale);
 	output_damage->output_scale.notify = output_handle_scale;
-	wl_signal_add(&output->events.needs_swap, &output_damage->output_needs_swap);
-	output_damage->output_needs_swap.notify = output_handle_needs_swap;
+	wl_signal_add(&output->events.needs_commit, &output_damage->output_needs_commit);
+	output_damage->output_needs_commit.notify = output_handle_needs_commit;
 	wl_signal_add(&output->events.frame, &output_damage->output_frame);
 	output_damage->output_frame.notify = output_handle_frame;
 
@@ -92,7 +93,7 @@ void wlr_output_damage_destroy(struct wlr_output_damage *output_damage) {
 	wl_list_remove(&output_damage->output_mode.link);
 	wl_list_remove(&output_damage->output_transform.link);
 	wl_list_remove(&output_damage->output_scale.link);
-	wl_list_remove(&output_damage->output_needs_swap.link);
+	wl_list_remove(&output_damage->output_needs_commit.link);
 	wl_list_remove(&output_damage->output_frame.link);
 	pixman_region32_fini(&output_damage->current);
 	for (size_t i = 0; i < WLR_OUTPUT_DAMAGE_PREVIOUS_LEN; ++i) {
@@ -102,7 +103,7 @@ void wlr_output_damage_destroy(struct wlr_output_damage *output_damage) {
 }
 
 bool wlr_output_damage_make_current(struct wlr_output_damage *output_damage,
-		bool *needs_swap, pixman_region32_t *damage) {
+		bool *needs_commit, pixman_region32_t *damage) {
 	struct wlr_output *output = output_damage->output;
 
 	int buffer_age = -1;
@@ -136,7 +137,7 @@ bool wlr_output_damage_make_current(struct wlr_output_damage *output_damage,
 		}
 	}
 
-	*needs_swap = output->needs_swap || pixman_region32_not_empty(damage);
+	*needs_commit = output->needs_commit || pixman_region32_not_empty(damage);
 	return true;
 }
 
diff --git a/types/wlr_screencopy_v1.c b/types/wlr_screencopy_v1.c
index 8beb650f..a7f8db59 100644
--- a/types/wlr_screencopy_v1.c
+++ b/types/wlr_screencopy_v1.c
@@ -135,8 +135,8 @@ static void frame_handle_copy(struct wl_client *client,
 	wl_resource_add_destroy_listener(buffer_resource, &frame->buffer_destroy);
 	frame->buffer_destroy.notify = frame_handle_buffer_destroy;
 
-	// Schedule a buffer swap
-	output->needs_swap = true;
+	// Schedule a buffer commit
+	output->needs_commit = true;
 	wlr_output_schedule_frame(output);
 
 	if (frame->overlay_cursor) {
diff --git a/types/wlr_screenshooter.c b/types/wlr_screenshooter.c
index c85e6ba5..9ced6b19 100644
--- a/types/wlr_screenshooter.c
+++ b/types/wlr_screenshooter.c
@@ -145,8 +145,8 @@ static void screenshooter_shoot(struct wl_client *client,
 	state->frame_listener.notify = output_handle_frame;
 	wl_signal_add(&output->events.swap_buffers, &state->frame_listener);
 
-	// Schedule a buffer swap
-	output->needs_swap = true;
+	// Schedule a buffer commit
+	output->needs_commit = true;
 	wlr_output_schedule_frame(output);
 }