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window-actor: Use different shape_regions/masks based on focus state

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We now update the frame mask and -shape on every focus change, which
is expensive and wasteful if we recompute the same two regions over
and over again. To address this, use different regions/masks based on
the focus state, so that we'll be able to re-use a previously computed
one if possible.

https://bugzilla.gnome.org/show_bug.cgi?id=744667
This commit is contained in:
Florian Müllner 2016-10-28 12:58:39 +02:00
parent 385cce7b8e
commit b35ad080ce
1 changed files with 42 additions and 15 deletions
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57
src/compositor/meta-window-actor.c
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@ -67,8 +67,12 @@ struct _MetaWindowActorPrivate
MetaShadow *focused_shadow;
MetaShadow *unfocused_shadow;
CoglTexture *focused_mask;
CoglTexture *unfocused_mask;
/* A region that matches the shape of the window, including frame bounds */
cairo_region_t *shape_region;
cairo_region_t *focused_shape_region;
cairo_region_t *unfocused_shape_region;
/* The region we should clip to when painting the shadow */
cairo_region_t *shadow_clip;
@ -458,7 +462,8 @@ meta_window_actor_constructed (GObject *object)
/* Start off with an empty shape region to maintain the invariant
* that it's always set */
priv->shape_region = cairo_region_create ();
priv->focused_shape_region = cairo_region_create ();
priv->unfocused_shape_region = cairo_region_create ();
}
static void
@ -479,9 +484,13 @@ meta_window_actor_dispose (GObject *object)
priv->send_frame_messages_timer = 0;
}
g_clear_pointer (&priv->shape_region, cairo_region_destroy);
g_clear_pointer (&priv->focused_shape_region, cairo_region_destroy);
g_clear_pointer (&priv->unfocused_shape_region, cairo_region_destroy);
g_clear_pointer (&priv->shadow_clip, cairo_region_destroy);
g_clear_pointer (&priv->focused_mask, cogl_object_unref);
g_clear_pointer (&priv->unfocused_mask, cogl_object_unref);
g_clear_pointer (&priv->shadow_class, g_free);
g_clear_pointer (&priv->focused_shadow, meta_shadow_unref);
g_clear_pointer (&priv->unfocused_shadow, meta_shadow_unref);
@ -622,8 +631,10 @@ meta_window_actor_get_shape_bounds (MetaWindowActor *self,
cairo_rectangle_int_t *bounds)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_get_extents (priv->shape_region, bounds);
gboolean appears_focused = meta_window_appears_focused (priv->window);
cairo_region_t *shape_region = appears_focused ? priv->focused_shape_region
: priv->unfocused_shape_region;
cairo_region_get_extents (shape_region, bounds);
}
static void
@ -1586,7 +1597,12 @@ check_needs_shadow (MetaWindowActor *self)
if (*shadow_location == NULL && should_have_shadow)
{
if (priv->shadow_shape == NULL)
priv->shadow_shape = meta_window_shape_new (priv->shape_region);
{
cairo_region_t *shape_region;
shape_region = appears_focused ? priv->focused_shape_region
: priv->unfocused_shape_region;
priv->shadow_shape = meta_window_shape_new (shape_region);
}
MetaShadowFactory *factory = meta_shadow_factory_get_default ();
const char *shadow_class = meta_window_actor_get_shadow_class (self);
@ -1679,10 +1695,11 @@ build_and_scan_frame_mask (MetaWindowActor *self,
guchar *mask_data;
guint tex_width, tex_height;
MetaShapedTexture *stex;
CoglTexture *paint_tex, *mask_texture;
CoglTexture *paint_tex, *mask_texture, **mask_ptr;
int stride;
cairo_t *cr;
cairo_surface_t *surface;
gboolean appears_focused = meta_window_appears_focused (priv->window);
stex = meta_surface_actor_get_texture (priv->surface);
g_return_if_fail (stex);
@ -1763,8 +1780,10 @@ build_and_scan_frame_mask (MetaWindowActor *self,
}
meta_shaped_texture_set_mask_texture (stex, mask_texture);
if (mask_texture)
cogl_object_unref (mask_texture);
mask_ptr = appears_focused ? &priv->focused_mask : &priv->unfocused_mask;
g_clear_pointer (mask_ptr, cogl_object_unref);
*mask_ptr = mask_texture;
g_free (mask_data);
}
@ -1773,8 +1792,12 @@ static void
meta_window_actor_update_shape_region (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_t *region = NULL;
cairo_region_t *region = NULL, **shape_region;
cairo_rectangle_int_t client_area;
gboolean appears_focused = meta_window_appears_focused (priv->window);
shape_region = appears_focused ? &priv->focused_shape_region
: &priv->unfocused_shape_region;
meta_window_get_client_area_rect (priv->window, &client_area);
@ -1798,8 +1821,8 @@ meta_window_actor_update_shape_region (MetaWindowActor *self)
if ((priv->window->shape_region != NULL) || (priv->window->frame != NULL))
build_and_scan_frame_mask (self, &client_area, region);
g_clear_pointer (&priv->shape_region, cairo_region_destroy);
priv->shape_region = region;
g_clear_pointer (shape_region, cairo_region_destroy);
*shape_region = region;
g_clear_pointer (&priv->shadow_shape, meta_window_shape_unref);
@ -1833,8 +1856,12 @@ static void
meta_window_actor_update_opaque_region (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_t *opaque_region;
cairo_region_t *opaque_region, *shape_region;
gboolean argb32 = is_argb32 (self);
gboolean appears_focused = meta_window_appears_focused (priv->window);
shape_region = appears_focused ? priv->focused_shape_region
: priv->unfocused_shape_region;
if (argb32 && priv->window->opaque_region != NULL)
{
@ -1854,12 +1881,12 @@ meta_window_actor_update_opaque_region (MetaWindowActor *self)
*/
opaque_region = cairo_region_copy (priv->window->opaque_region);
cairo_region_translate (opaque_region, client_area.x, client_area.y);
cairo_region_intersect (opaque_region, priv->shape_region);
cairo_region_intersect (opaque_region, shape_region);
}
else if (argb32)
opaque_region = NULL;
else
opaque_region = cairo_region_reference (priv->shape_region);
opaque_region = cairo_region_reference (shape_region);
meta_surface_actor_set_opaque_region (priv->surface, opaque_region);
cairo_region_destroy (opaque_region);