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meta-shaped-texture: Don't queue redraws for obscured regions

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When we get a damage event we update the window by calling
meta_shaped_texture_update_area which queues a redraw on the actor.
We can avoid that for obscured regions by comparing the damage area to
our visible area.

This patch causes _NET_WM_FRAME_DRAWN messages to be not sent in some cases
where they should be sent; they will be added back in a later commit.

https://bugzilla.gnome.org/show_bug.cgi?id=703332
This commit is contained in:
Adel Gadllah 2013-08-27 16:45:15 +02:00 committed by Jasper St. Pierre
parent 0089b5769c
commit f08921bd0c
5 changed files with 166 additions and 54 deletions
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54
src/compositor/meta-shaped-texture.c
View File

@ -738,19 +738,38 @@ queue_damage_redraw_with_clip (MetaShapedTexture *stex,
clutter_actor_queue_redraw_with_clip (self, &clip);
}
void
/**
* meta_shaped_texture_update_area:
* @stex: #MetaShapedTexture
* @x: the x coordinate of the damaged area
* @y: the y coordinate of the damaged area
* @width: the width of the damaged area
* @height: the height of the damaged area
* @unobscured_region: The unobscured region of the window or %NULL if
* there is no valid one (like when the actor is transformed or
* has a mapped clone)
*
* Repairs the damaged area indicated by @x, @y, @width and @height
* and queues a redraw for the intersection @visibible_region and
* the damage area. If @visibible_region is %NULL a redraw will always
* get queued.
*
* Return value: Whether a redraw have been queued or not
*/
gboolean
meta_shaped_texture_update_area (MetaShapedTexture *stex,
int x,
int y,
int width,
int height)
int height,
cairo_region_t *unobscured_region)
{
MetaShapedTexturePrivate *priv;
priv = stex->priv;
if (priv->texture == NULL)
return;
return FALSE;
switch (priv->type)
{
@ -765,7 +784,34 @@ meta_shaped_texture_update_area (MetaShapedTexture *stex,
meta_texture_tower_update_area (priv->paint_tower, x, y, width, height);
queue_damage_redraw_with_clip (stex, x, y, width, height);
if (unobscured_region)
{
cairo_region_t *intersection;
if (cairo_region_is_empty (unobscured_region))
return FALSE;
intersection = cairo_region_copy (unobscured_region);
cairo_region_intersect_rectangle (intersection, &clip);
if (!cairo_region_is_empty (intersection))
{
cairo_rectangle_int_t damage_rect;
cairo_region_get_extents (intersection, &damage_rect);
clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &damage_rect);
cairo_region_destroy (intersection);
return TRUE;
}
cairo_region_destroy (intersection);
return FALSE;
}
clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &clip);
return TRUE;
}
/**

11
src/compositor/meta-window-actor-private.h
View File

@ -70,11 +70,14 @@ void meta_window_actor_queue_frame_drawn (MetaWindowActor *self,
cairo_region_t *meta_window_actor_get_obscured_region (MetaWindowActor *self);
void meta_window_actor_set_visible_region (MetaWindowActor *self,
cairo_region_t *visible_region);
void meta_window_actor_set_visible_region_beneath (MetaWindowActor *self,
void meta_window_actor_set_clip_region (MetaWindowActor *self,
cairo_region_t *clip_region);
void meta_window_actor_set_clip_region_beneath (MetaWindowActor *self,
cairo_region_t *beneath_region);
void meta_window_actor_reset_visible_regions (MetaWindowActor *self);
void meta_window_actor_reset_clip_regions (MetaWindowActor *self);
void meta_window_actor_set_unobscured_region (MetaWindowActor *self,
cairo_region_t *unobscured_region);
void meta_window_actor_effect_completed (MetaWindowActor *actor,
gulong event);

65
src/compositor/meta-window-actor.c
View File

@ -77,6 +77,9 @@ struct _MetaWindowActorPrivate
/* The region we should clip to when painting the shadow */
cairo_region_t *shadow_clip;
/* The region that is visible, used to optimize out redraws */
cairo_region_t *unobscured_region;
/* Extracted size-invariant shape used for shadows */
MetaWindowShape *shadow_shape;
@ -445,6 +448,7 @@ meta_window_actor_dispose (GObject *object)
meta_window_actor_detach_x11_pixmap (self);
}
g_clear_pointer (&priv->unobscured_region, cairo_region_destroy);
g_clear_pointer (&priv->shape_region, cairo_region_destroy);
g_clear_pointer (&priv->input_region, cairo_region_destroy);
g_clear_pointer (&priv->opaque_region, cairo_region_destroy);
@ -948,7 +952,8 @@ meta_window_actor_damage_all (MetaWindowActor *self)
meta_shaped_texture_update_area (META_SHAPED_TEXTURE (priv->actor),
0, 0,
cogl_texture_get_width (texture),
cogl_texture_get_height (texture));
cogl_texture_get_height (texture),
clutter_actor_has_mapped_clones (priv->actor) ? NULL : priv->unobscured_region);
priv->needs_damage_all = FALSE;
priv->repaint_scheduled = TRUE;
@ -1734,39 +1739,66 @@ see_region (cairo_region_t *region,
#endif
/**
* meta_window_actor_set_visible_region:
* meta_window_actor_set_unobscured_region:
* @self: a #MetaWindowActor
* @visible_region: the region of the screen that isn't completely
* @unobscured_region: the region of the screen that isn't completely
* obscured.
*
* Provides a hint as to what areas of the window need to queue
* redraws when damaged. Regions not in @unobscured_region are completely obscured.
* Unlike meta_window_actor_set_clip_region(), the region here
* doesn't take into account any clipping that is in effect while drawing.
*/
void
meta_window_actor_set_unobscured_region (MetaWindowActor *self,
cairo_region_t *unobscured_region)
{
MetaWindowActorPrivate *priv = self->priv;
if (priv->unobscured_region)
cairo_region_destroy (priv->unobscured_region);
if (unobscured_region)
priv->unobscured_region = cairo_region_copy (unobscured_region);
else
priv->unobscured_region = NULL;
}
/**
* meta_window_actor_set_clip_region:
* @self: a #MetaWindowActor
* @clip_region: the region of the screen that isn't completely
* obscured.
*
* Provides a hint as to what areas of the window need to be
* drawn. Regions not in @visible_region are completely obscured.
* drawn. Regions not in @clip_region are completely obscured or
* not drawn in this frame.
* This will be set before painting then unset afterwards.
*/
void
meta_window_actor_set_visible_region (MetaWindowActor *self,
cairo_region_t *visible_region)
meta_window_actor_set_clip_region (MetaWindowActor *self,
cairo_region_t *clip_region)
{
MetaWindowActorPrivate *priv = self->priv;
meta_shaped_texture_set_clip_region (META_SHAPED_TEXTURE (priv->actor),
visible_region);
clip_region);
}
/**
* meta_window_actor_set_visible_region_beneath:
* meta_window_actor_set_clip_region_beneath:
* @self: a #MetaWindowActor
* @visible_region: the region of the screen that isn't completely
* @clip_region: the region of the screen that isn't completely
* obscured beneath the main window texture.
*
* Provides a hint as to what areas need to be drawn *beneath*
* the main window texture. This is the relevant visible region
* the main window texture. This is the relevant clip region
* when drawing the shadow, properly accounting for areas of the
* shadow hid by the window itself. This will be set before painting
* then unset afterwards.
*/
void
meta_window_actor_set_visible_region_beneath (MetaWindowActor *self,
meta_window_actor_set_clip_region_beneath (MetaWindowActor *self,
cairo_region_t *beneath_region)
{
MetaWindowActorPrivate *priv = self->priv;
@ -1786,14 +1818,14 @@ meta_window_actor_set_visible_region_beneath (MetaWindowActor *self,
}
/**
* meta_window_actor_reset_visible_regions:
* meta_window_actor_reset_clip_regions:
* @self: a #MetaWindowActor
*
* Unsets the regions set by meta_window_actor_set_visible_region() and
* meta_window_actor_set_visible_region_beneath()
* Unsets the regions set by meta_window_actor_set_clip_region() and
* meta_window_actor_set_clip_region_beneath()
*/
void
meta_window_actor_reset_visible_regions (MetaWindowActor *self)
meta_window_actor_reset_clip_regions (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
@ -2019,7 +2051,8 @@ meta_window_actor_process_x11_damage (MetaWindowActor *self,
event->area.x,
event->area.y,
event->area.width,
event->area.height);
event->area.height,
clutter_actor_has_mapped_clones (priv->actor) ? NULL : priv->unobscured_region);
priv->repaint_scheduled = TRUE;
}

69
src/compositor/meta-window-group.c
View File

@ -90,17 +90,30 @@ painting_untransformed (MetaWindowGroup *window_group,
static void
meta_window_group_paint (ClutterActor *actor)
{
cairo_region_t *visible_region;
ClutterActor *stage;
cairo_region_t *clip_region;
cairo_region_t *unobscured_region;
ClutterActorIter iter;
ClutterActor *child;
cairo_rectangle_int_t visible_rect;
cairo_rectangle_int_t visible_rect, clip_rect;
int paint_x_origin, paint_y_origin;
int actor_x_origin, actor_y_origin;
int paint_x_offset, paint_y_offset;
MetaWindowGroup *window_group = META_WINDOW_GROUP (actor);
MetaCompScreen *info;
MetaCompScreen *info = meta_screen_get_compositor_data (window_group->screen);
ClutterActor *stage = clutter_actor_get_stage (actor);
/* Start off by treating all windows as completely unobscured, so damage anywhere
* in a window queues redraws, but confine it more below. */
clutter_actor_iter_init (&iter, actor);
while (clutter_actor_iter_next (&iter, &child))
{
if (META_IS_WINDOW_ACTOR (child))
{
MetaWindowActor *window_actor = META_WINDOW_ACTOR (child);
meta_window_actor_set_unobscured_region (window_actor, NULL);
}
}
/* Normally we expect an actor to be drawn at it's position on the screen.
* However, if we're inside the paint of a ClutterClone, that won't be the
@ -125,17 +138,22 @@ meta_window_group_paint (ClutterActor *actor)
paint_x_offset = paint_x_origin - actor_x_origin;
paint_y_offset = paint_y_origin - actor_y_origin;
visible_rect.x = visible_rect.y = 0;
visible_rect.width = clutter_actor_get_width (CLUTTER_ACTOR (stage));
visible_rect.height = clutter_actor_get_height (CLUTTER_ACTOR (stage));
unobscured_region = cairo_region_create_rectangle (&visible_rect);
/* Get the clipped redraw bounds from Clutter so that we can avoid
* painting shadows on windows that don't need to be painted in this
* frame. In the case of a multihead setup with mismatched monitor
* sizes, we could intersect this with an accurate union of the
* monitors to avoid painting shadows that are visible only in the
* holes. */
stage = clutter_actor_get_stage (actor);
clutter_stage_get_redraw_clip_bounds (CLUTTER_STAGE (stage),
&visible_rect);
&clip_rect);
visible_region = cairo_region_create_rectangle (&visible_rect);
clip_region = cairo_region_create_rectangle (&clip_rect);
if (!meta_is_wayland_compositor ())
{
@ -146,7 +164,8 @@ meta_window_group_paint (ClutterActor *actor)
MetaWindow *window = meta_window_actor_get_meta_window (info->unredirected_window);
meta_window_get_outer_rect (window, (MetaRectangle *)&unredirected_rect);
cairo_region_subtract_rectangle (visible_region, &unredirected_rect);
cairo_region_subtract_rectangle (unobscured_region, &unredirected_rect);
cairo_region_subtract_rectangle (clip_region, &unredirected_rect);
}
}
@ -195,20 +214,28 @@ meta_window_group_paint (ClutterActor *actor)
x += paint_x_offset;
y += paint_y_offset;
/* Temporarily move to the coordinate system of the actor */
cairo_region_translate (visible_region, - x, - y);
meta_window_actor_set_visible_region (window_actor, visible_region);
/* Temporarily move to the coordinate system of the actor */
cairo_region_translate (unobscured_region, - x, - y);
cairo_region_translate (clip_region, - x, - y);
meta_window_actor_set_unobscured_region (window_actor, unobscured_region);
meta_window_actor_set_clip_region (window_actor, clip_region);
if (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (window_actor)) == 0xff)
{
cairo_region_t *obscured_region = meta_window_actor_get_obscured_region (window_actor);
if (obscured_region)
cairo_region_subtract (visible_region, obscured_region);
{
cairo_region_subtract (unobscured_region, obscured_region);
cairo_region_subtract (clip_region, obscured_region);
}
}
meta_window_actor_set_visible_region_beneath (window_actor, visible_region);
cairo_region_translate (visible_region, x, y);
meta_window_actor_set_clip_region_beneath (window_actor, clip_region);
cairo_region_translate (unobscured_region, x, y);
cairo_region_translate (clip_region, x, y);
}
else if (META_IS_BACKGROUND_ACTOR (child) ||
META_IS_BACKGROUND_GROUP (child))
@ -221,17 +248,19 @@ meta_window_group_paint (ClutterActor *actor)
x += paint_x_offset;
y += paint_y_offset;
cairo_region_translate (visible_region, - x, - y);
cairo_region_translate (clip_region, - x, - y);
if (META_IS_BACKGROUND_GROUP (child))
meta_background_group_set_visible_region (META_BACKGROUND_GROUP (child), visible_region);
meta_background_group_set_clip_region (META_BACKGROUND_GROUP (child), clip_region);
else
meta_background_actor_set_visible_region (META_BACKGROUND_ACTOR (child), visible_region);
cairo_region_translate (visible_region, x, y);
meta_background_actor_set_clip_region (META_BACKGROUND_ACTOR (child), clip_region);
cairo_region_translate (clip_region, x, y);
}
}
cairo_region_destroy (visible_region);
cairo_region_destroy (unobscured_region);
cairo_region_destroy (clip_region);
CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);
@ -244,7 +273,7 @@ meta_window_group_paint (ClutterActor *actor)
if (META_IS_WINDOW_ACTOR (child))
{
MetaWindowActor *window_actor = META_WINDOW_ACTOR (child);
meta_window_actor_reset_visible_regions (window_actor);
meta_window_actor_reset_clip_regions (window_actor);
}
else if (META_IS_BACKGROUND_ACTOR (child))
{

5
src/meta/meta-shaped-texture.h
View File

@ -67,11 +67,12 @@ GType meta_shaped_texture_get_type (void) G_GNUC_CONST;
void meta_shaped_texture_set_create_mipmaps (MetaShapedTexture *stex,
gboolean create_mipmaps);
void meta_shaped_texture_update_area (MetaShapedTexture *stex,
gboolean meta_shaped_texture_update_area (MetaShapedTexture *stex,
int x,
int y,
int width,
int height);
int height,
cairo_region_t *unobscured_region);
CoglTexture * meta_shaped_texture_get_texture (MetaShapedTexture *stex);