mirror of
https://github.com/brl/mutter.git
synced 2024-11-30 12:00:44 -05:00
b248941af5
New experimental API is added to allow changing the way that redraws are timed for a stage to include a "sync delay" - a period after the vertical blanking period where Clutter simply waits for updates. In detail, the algorithm is that when the master clock is restarted after drawing a frame (in the case where there are timelines running) or started fresh in response to a queued redraw or relayout, the start is scheduled at the next sync point (sync_delay ms after the predicted vblank period) rather than done immediately. https://bugzilla.gnome.org/show_bug.cgi?id=692901
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
#ifndef __CLUTTER_STAGE_COGL_H__
|
|
#define __CLUTTER_STAGE_COGL_H__
|
|
|
|
#include <cairo.h>
|
|
#include <clutter/clutter-backend.h>
|
|
#include <clutter/clutter-stage.h>
|
|
|
|
#ifdef COGL_HAS_X11_SUPPORT
|
|
#include <X11/Xlib.h>
|
|
#include <X11/Xatom.h>
|
|
#include <X11/Xutil.h>
|
|
#endif
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define CLUTTER_TYPE_STAGE_COGL (_clutter_stage_cogl_get_type ())
|
|
#define CLUTTER_STAGE_COGL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_STAGE_COGL, ClutterStageCogl))
|
|
#define CLUTTER_IS_STAGE_COGL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_STAGE_COGL))
|
|
#define CLUTTER_STAGE_COGL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_STAGE_COGL, ClutterStageCoglClass))
|
|
#define CLUTTER_IS_STAGE_COGL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_STAGE_COGL))
|
|
#define CLUTTER_STAGE_COGL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_STAGE_COGL, ClutterStageCoglClass))
|
|
|
|
typedef struct _ClutterStageCogl ClutterStageCogl;
|
|
typedef struct _ClutterStageCoglClass ClutterStageCoglClass;
|
|
|
|
struct _ClutterStageCogl
|
|
{
|
|
GObject parent_instance;
|
|
|
|
/* the stage wrapper */
|
|
ClutterStage *wrapper;
|
|
|
|
/* back pointer to the backend */
|
|
ClutterBackend *backend;
|
|
|
|
CoglOnscreen *onscreen;
|
|
|
|
gint64 last_presentation_time;
|
|
float refresh_rate;
|
|
|
|
gint64 update_time;
|
|
gint pending_swaps;
|
|
CoglFrameClosure *frame_closure;
|
|
|
|
/* We only enable clipped redraws after 2 frames, since we've seen
|
|
* a lot of drivers can struggle to get going and may output some
|
|
* junk frames to start with. */
|
|
unsigned long frame_count;
|
|
|
|
cairo_rectangle_int_t bounding_redraw_clip;
|
|
|
|
guint initialized_redraw_clip : 1;
|
|
|
|
/* TRUE if the current paint cycle has a clipped redraw. In that
|
|
case bounding_redraw_clip specifies the the bounds. */
|
|
guint using_clipped_redraw : 1;
|
|
|
|
guint dirty_backbuffer : 1;
|
|
|
|
/* Stores a list of previous damaged areas */
|
|
GSList *damage_history;
|
|
};
|
|
|
|
struct _ClutterStageCoglClass
|
|
{
|
|
GObjectClass parent_class;
|
|
};
|
|
|
|
GType _clutter_stage_cogl_get_type (void) G_GNUC_CONST;
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __CLUTTER_STAGE_COGL_H__ */
|