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libweston: Separate damage accumulation from visibility calculation

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This is kind of confusing, as the visibility calculation is just a side
effect of the damage accumulation.

At the expense of walking the paint node list another time, make this
a separate function.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
This commit is contained in:
Derek Foreman 2023-06-21 16:51:37 -05:00
parent 7b2ae2ba77
commit 6ba7e57c1c
1 changed files with 34 additions and 8 deletions
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42
libweston/compositor.c
View file

@ -974,7 +974,7 @@ weston_view_move_to_plane(struct weston_view *view,
* A repaint is scheduled for this view.
*
* The region of all opaque views covering this view is stored in
* weston_view::clip and updated by view_accumulate_damage() during
* weston_view::clip and updated by output_update_visibility() during
* weston_output_repaint(). Specifically, that region matches the
* scenegraph as it was last painted.
*/
@ -2907,8 +2907,7 @@ surface_flush_damage(struct weston_surface *surface, struct weston_output *outpu
}
static void
view_accumulate_damage(struct weston_view *view,
pixman_region32_t *opaque)
view_accumulate_damage(struct weston_view *view)
{
pixman_region32_t damage;
@ -2927,20 +2926,27 @@ view_accumulate_damage(struct weston_view *view,
view->geometry.pos_offset.y);
}
pixman_region32_intersect(&damage, &damage,
&view->transform.boundingbox);
pixman_region32_subtract(&damage, &damage, opaque);
pixman_region32_intersect(&damage, &damage, &view->visible);
pixman_region32_union(&view->plane->damage,
&view->plane->damage, &damage);
pixman_region32_fini(&damage);
}
static void
view_update_clip_and_visible(struct weston_view *view,
pixman_region32_t *opaque)
{
assert(!view->transform.dirty);
pixman_region32_subtract(&view->visible, &view->transform.boundingbox,
opaque);
pixman_region32_copy(&view->clip, opaque);
pixman_region32_union(opaque, opaque, &view->transform.opaque);
}
static void
output_accumulate_damage(struct weston_output *output)
output_update_visibility(struct weston_output *output)
{
struct weston_compositor *ec = output->compositor;
struct weston_plane *plane;
@ -2959,7 +2965,7 @@ output_accumulate_damage(struct weston_output *output)
if (pnode->view->plane != plane)
continue;
view_accumulate_damage(pnode->view, &opaque);
view_update_clip_and_visible(pnode->view, &opaque);
}
pixman_region32_union(&clip, &clip, &opaque);
@ -2967,6 +2973,24 @@ output_accumulate_damage(struct weston_output *output)
}
pixman_region32_fini(&clip);
}
static void
output_accumulate_damage(struct weston_output *output)
{
struct weston_compositor *ec = output->compositor;
struct weston_plane *plane;
struct weston_paint_node *pnode;
wl_list_for_each(plane, &ec->plane_list, link) {
wl_list_for_each(pnode, &output->paint_node_z_order_list,
z_order_link) {
if (pnode->view->plane != plane)
continue;
view_accumulate_damage(pnode->view);
}
}
wl_list_for_each(pnode, &output->paint_node_z_order_list,
z_order_link) {
@ -3254,6 +3278,8 @@ weston_output_repaint(struct weston_output *output)
}
}
output_update_visibility(output);
output_accumulate_damage(output);
pixman_region32_init(&output_damage);