Use pixman_region32_clear instead of our own empty_region

This requires pixman 0.25.2

Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>

clients/nested.c

@@ -550,13 +550,6 @@ surface_set_input_region(struct wl_client *client,
 	fprintf(stderr, "surface_set_input_region\n");
 }
 
-static void
-empty_region(pixman_region32_t *region)
-{
-	pixman_region32_fini(region);
-	pixman_region32_init(region);
-}
-
 static void
 surface_commit(struct wl_client *client, struct wl_resource *resource)
 {
@@ -574,7 +567,7 @@ surface_commit(struct wl_client *client, struct wl_resource *resource)
 	surface->pending.newly_attached = 0;
 
 	/* wl_surface.damage */
-	empty_region(&surface->pending.damage);
+	pixman_region32_clear(&surface->pending.damage);
 
 	/* wl_surface.frame */
 	wl_list_insert_list(&surface->frame_callback_list,

configure.ac

@@ -59,7 +59,7 @@ AC_CHECK_HEADERS([execinfo.h])
 
 AC_CHECK_FUNCS([mkostemp strchrnul initgroups posix_fallocate])
 
-COMPOSITOR_MODULES="wayland-server >= 1.3.90 pixman-1"
+COMPOSITOR_MODULES="wayland-server >= 1.3.90 pixman-1 >= 0.25.2"
 
 AC_ARG_ENABLE(egl, [  --disable-egl],,
               enable_egl=yes)

src/compositor.c

@@ -329,13 +329,6 @@ surface_handle_pending_buffer_destroy(struct wl_listener *listener, void *data)
 	surface->pending.buffer = NULL;
 }
 
-static void
-empty_region(pixman_region32_t *region)
-{
-	pixman_region32_fini(region);
-	pixman_region32_init(region);
-}
-
 static void
 region_init_infinite(pixman_region32_t *region)
 {
@@ -1561,7 +1554,7 @@ surface_flush_damage(struct weston_surface *surface)
 	    wl_shm_buffer_get(surface->buffer_ref.buffer->resource))
 		surface->compositor->renderer->flush_damage(surface);
 
-	empty_region(&surface->damage);
+	pixman_region32_clear(&surface->damage);
 }
 
 static void
@@ -2020,7 +2013,7 @@ surface_set_opaque_region(struct wl_client *client,
 		pixman_region32_copy(&surface->pending.opaque,
 				     &region->region);
 	} else {
-		empty_region(&surface->pending.opaque);
+		pixman_region32_clear(&surface->pending.opaque);
 	}
 }
 
@@ -2083,10 +2076,8 @@ weston_surface_commit(struct weston_surface *surface)
 	pixman_region32_union(&surface->damage, &surface->damage,
 			      &surface->pending.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);
+	pixman_region32_clear(&surface->pending.damage);
 
 	/* wl_surface.set_opaque_region */
 	pixman_region32_init_rect(&opaque, 0, 0,
@@ -2334,7 +2325,7 @@ weston_subsurface_commit_from_cache(struct weston_subsurface *sub)
 				       0, 0,
 				       surface->width,
 				       surface->height);
-	empty_region(&sub->cached.damage);
+	pixman_region32_clear(&sub->cached.damage);
 
 	/* wl_surface.set_opaque_region */
 	pixman_region32_init_rect(&opaque, 0, 0,
@@ -2386,7 +2377,7 @@ weston_subsurface_commit_to_cache(struct weston_subsurface *sub)
 				  -surface->pending.sx, -surface->pending.sy);
 	pixman_region32_union(&sub->cached.damage, &sub->cached.damage,
 			      &surface->pending.damage);
-	empty_region(&surface->pending.damage);
+	pixman_region32_clear(&surface->pending.damage);
 
 	if (surface->pending.newly_attached) {
 		sub->cached.newly_attached = 1;

src/data-device.c

@@ -52,13 +52,6 @@ struct weston_touch_drag {
 	struct weston_touch_grab grab;
 };
 
-static void
-empty_region(pixman_region32_t *region)
-{
-	pixman_region32_fini(region);
-	pixman_region32_init(region);
-}
-
 static void
 data_offer_accept(struct wl_client *client, struct wl_resource *resource,
 		  uint32_t serial, const char *mime_type)
@@ -203,7 +196,7 @@ drag_surface_configure(struct weston_drag *drag,
 		wl_list_remove(&drag->icon->layer_link);
 		wl_list_insert(list, &drag->icon->layer_link);
 		weston_view_update_transform(drag->icon);
-		empty_region(&es->pending.input);
+		pixman_region32_clear(&es->pending.input);
 	}
 
 	drag->dx += sx;
@@ -358,7 +351,7 @@ data_device_end_drag_grab(struct weston_drag *drag,
 			weston_view_unmap(drag->icon);
 
 		drag->icon->surface->configure = NULL;
-		empty_region(&drag->icon->surface->pending.input);
+		pixman_region32_clear(&drag->icon->surface->pending.input);
 		wl_list_remove(&drag->icon_destroy_listener.link);
 		weston_view_destroy(drag->icon);
 	}