82af1fb87e
This commit assumes that cursor surfaces work in a "mailbox" fashion. If they are painted multiple times before a successful flip, all commits but the last get discarded, and the last commit gets presented after the flip succeeds. This is more or less how it works in the atomic backend, and also more or less how it works in other backends, with the exception that the cursor painting might fail without any way of knowing. This assumption is still better than unconditionally discarding all cursor surface feedbacks as if the cursor painting always fails. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1484>
67 lines
2.5 KiB
C
67 lines
2.5 KiB
C
/*
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* presentation-time protocol
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*
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* Copyright (C) 2020 Ivan Molodetskikh <yalterz@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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*/
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#ifndef META_WAYLAND_PRESENTATION_TIME_PRIVATE_H
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#define META_WAYLAND_PRESENTATION_TIME_PRIVATE_H
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#include <wayland-server.h>
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#include "clutter/clutter.h"
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#include "wayland/meta-wayland-cursor-surface.h"
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#include "wayland/meta-wayland-types.h"
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typedef struct _MetaWaylandPresentationFeedback
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{
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struct wl_list link;
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struct wl_resource *resource;
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MetaWaylandSurface *surface;
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} MetaWaylandPresentationFeedback;
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typedef struct _MetaWaylandPresentationTime
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{
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GList *feedback_surfaces;
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/*
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* A mapping from (ClutterStageView *) to a
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* (MetaWaylandPresentationFeedback *) wl_list of presentation-time feedbacks
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* that are scheduled to be presented.
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*/
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GHashTable *feedbacks;
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} MetaWaylandPresentationTime;
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void meta_wayland_init_presentation_time (MetaWaylandCompositor *compositor);
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void meta_wayland_presentation_feedback_discard (MetaWaylandPresentationFeedback *feedback);
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void meta_wayland_presentation_feedback_present (MetaWaylandPresentationFeedback *feedback,
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ClutterFrameInfo *frame_info,
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MetaWaylandOutput *output);
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struct wl_list * meta_wayland_presentation_time_ensure_feedbacks (MetaWaylandPresentationTime *presentation_time,
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ClutterStageView *stage_view);
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void meta_wayland_presentation_time_cursor_painted (MetaWaylandPresentationTime *presentation_time,
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ClutterStageView *stage_view,
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MetaWaylandCursorSurface *cursor_surface);
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#endif /* META_WAYLAND_PRESENTATION_TIME_PRIVATE_H */
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