compositor: Compute whether or not a surface is overlapped
diff --git a/src/compositor.c b/src/compositor.c
index dbdfe91..bccd372 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -789,7 +789,8 @@
{
struct weston_compositor *ec = output->compositor;
struct weston_surface *es;
- pixman_region32_t opaque, new_damage, total_damage;
+ pixman_region32_t opaque, new_damage, total_damage,
+ overlap, surface_overlap;
output->prepare_render(output);
@@ -805,11 +806,25 @@
pixman_region32_init(&new_damage);
pixman_region32_init(&opaque);
+ pixman_region32_init(&overlap);
+
+ if (ec->fade.spring.current >= 0.001)
+ pixman_region32_union(&overlap, &overlap, &output->region);
+
wl_list_for_each(es, &ec->surface_list, link) {
pixman_region32_subtract(&es->damage, &es->damage, &opaque);
pixman_region32_union(&new_damage, &new_damage, &es->damage);
pixman_region32_union(&opaque, &opaque, &es->opaque);
+
+ pixman_region32_init(&surface_overlap);
+ pixman_region32_intersect_rect(&surface_overlap,
+ &overlap, es->x, es->y,
+ es->width, es->height);
+ es->overlapped = pixman_region32_not_empty(&surface_overlap);
+ pixman_region32_fini(&surface_overlap);
+ pixman_region32_union_rect(&overlap, &overlap, es->x, es->y,
+ es->width, es->height);
}
pixman_region32_init(&total_damage);
@@ -819,6 +834,7 @@
&new_damage, &output->region);
pixman_region32_fini(&opaque);
+ pixman_region32_fini(&overlap);
pixman_region32_fini(&new_damage);
wl_list_for_each(es, &ec->surface_list, link) {