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83f8bfd2ca
When we are painting a stack of 5-10 maximized windows, the standard bottom-to-top method of drawing every actor results in a tremendous amount of overdraw and can easily max out the available memory bandwidth on a low-end* graphics chipset. It's even worse if window textures are being accessed over the AGP bus. When we have opaque windows, we can go ahead and compute visibility ourselves (in classic X-server fashion) and use that information to restrict drawing obscured actors. * Add MutterWindowGroup - a ClutterGroup subclass with logic for figuring out obscured regions. * Add mutter_window_get_obscured_region() to get the region obscured by that window. * Add mutter_shaped_texture_set_clip_region() to hint a clip region to the painting code; this is set based on the computed visible region of MutterWindowGroup. * Add tidy_texture_frame_set_needs_paint() to hint that the paint can be skipped entirely; this is used when we detect that the window shadow is entirely obscured. http://bugzilla.gnome.org/show_bug.cgi?id=587344
52 lines
2.3 KiB
C
52 lines
2.3 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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#ifndef MUTTER_WINDOW_PRIVATE_H
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#define MUTTER_WINDOW_PRIVATE_H
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#include <X11/extensions/Xdamage.h>
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#include <gdk/gdk.h>
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#include "compositor-mutter.h"
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MutterWindow *mutter_window_new (MetaWindow *window);
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void mutter_window_destroy (MutterWindow *cw);
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void mutter_window_show (MutterWindow *cw,
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MetaCompEffect effect);
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void mutter_window_hide (MutterWindow *cw,
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MetaCompEffect effect);
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void mutter_window_maximize (MutterWindow *cw,
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MetaRectangle *old_rect,
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MetaRectangle *new_rect);
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void mutter_window_unmaximize (MutterWindow *cw,
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MetaRectangle *old_rect,
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MetaRectangle *new_rect);
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void mutter_window_process_damage (MutterWindow *cw,
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XDamageNotifyEvent *event);
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void mutter_window_pre_paint (MutterWindow *self);
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gboolean mutter_window_effect_in_progress (MutterWindow *cw);
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void mutter_window_sync_actor_position (MutterWindow *cw);
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void mutter_window_sync_visibility (MutterWindow *cw);
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void mutter_window_update_window_type (MutterWindow *cw);
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void mutter_window_update_shape (MutterWindow *cw,
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gboolean shaped);
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void mutter_window_update_opacity (MutterWindow *cw);
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void mutter_window_mapped (MutterWindow *cw);
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void mutter_window_unmapped (MutterWindow *cw);
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GdkRegion *mutter_window_get_obscured_region (MutterWindow *cw);
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void mutter_window_set_visible_region (MutterWindow *cw,
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GdkRegion *visible_region);
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void mutter_window_set_visible_region_beneath (MutterWindow *cw,
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GdkRegion *beneath_region);
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void mutter_window_reset_visible_regions (MutterWindow *cw);
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void mutter_window_effect_completed (MutterWindow *actor,
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gulong event);
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#endif /* MUTTER_WINDOW_PRIVATE_H */
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