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wayland/actor-surface: Intersect input/opaque region with surface region

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As per specification

> The compositor ignores the parts of the input region that
> fall outside of the surface.

> The compositor ignores the parts of the opaque region that
> fall outside of the surface

This fixes culling problems under certain conditions.
This commit is contained in:
Robert Mader 2018-07-02 12:22:30 +02:00 committed by Robert Mader
parent b8340f1355
commit 6a92c6f83f
1 changed files with 8 additions and 0 deletions
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8
src/wayland/meta-wayland-actor-surface.c
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@ -140,6 +140,7 @@ meta_wayland_actor_surface_real_sync_actor_state (MetaWaylandActorSurface *actor
MetaShapedTexture *stex;
double actor_scale;
GList *l;
cairo_rectangle_int_t surface_rect;
surface_actor = priv->actor;
stex = meta_surface_actor_get_texture (surface_actor);
@ -147,6 +148,11 @@ meta_wayland_actor_surface_real_sync_actor_state (MetaWaylandActorSurface *actor
actor_scale = meta_wayland_actor_surface_calculate_scale (actor_surface);
clutter_actor_set_scale (CLUTTER_ACTOR (stex), actor_scale, actor_scale);
surface_rect = (cairo_rectangle_int_t) {
.width = meta_wayland_surface_get_width (surface),
.height = meta_wayland_surface_get_height (surface),
};
if (surface->input_region)
{
cairo_region_t *scaled_input_region;
@ -156,6 +162,7 @@ meta_wayland_actor_surface_real_sync_actor_state (MetaWaylandActorSurface *actor
region_scale = (int) (surface->scale * actor_scale);
scaled_input_region = meta_region_scale (surface->input_region,
region_scale);
cairo_region_intersect_rectangle (scaled_input_region, &surface_rect);
meta_surface_actor_set_input_region (surface_actor, scaled_input_region);
cairo_region_destroy (scaled_input_region);
}
@ -171,6 +178,7 @@ meta_wayland_actor_surface_real_sync_actor_state (MetaWaylandActorSurface *actor
/* Wayland surface coordinate space -> stage coordinate space */
scaled_opaque_region = meta_region_scale (surface->opaque_region,
surface->scale);
cairo_region_intersect_rectangle (scaled_opaque_region, &surface_rect);
meta_surface_actor_set_opaque_region (surface_actor,
scaled_opaque_region);
cairo_region_destroy (scaled_opaque_region);