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clutter/view: Make it possible to assign a temporary direct scanout

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Make it possible to cause the next frame to scan out directly from the
passed CoglScannout. This makes it possible to completely bypass
compositing for the following frame.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/798
This commit is contained in:
Jonas Ådahl 2019-09-12 11:28:50 +02:00
parent 3da8c1bfdc
commit 753066598f
5 changed files with 58 additions and 2 deletions
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4
clutter/clutter/clutter-mutter.h
View File

@ -57,6 +57,10 @@ void clutter_stage_thaw_updates (ClutterStage *stage);
CLUTTER_EXPORT
void clutter_stage_update_resource_scales (ClutterStage *stage);
CLUTTER_EXPORT
void clutter_stage_view_assign_next_scanout (ClutterStageView *stage_view,
CoglScanout *scanout);
CLUTTER_EXPORT
gboolean clutter_actor_has_damage (ClutterActor *actor);

2
clutter/clutter/clutter-stage-view-private.h
View File

@ -43,4 +43,6 @@ const cairo_region_t * clutter_stage_view_peek_redraw_clip (ClutterStageView *vi
cairo_region_t * clutter_stage_view_take_redraw_clip (ClutterStageView *view);
CoglScanout * clutter_stage_view_take_scanout (ClutterStageView *view);
#endif /* __CLUTTER_STAGE_VIEW_PRIVATE_H__ */

24
clutter/clutter/clutter-stage-view.c
View File

@ -24,6 +24,8 @@
#include <math.h>
#include "clutter/clutter-private.h"
#include "clutter/clutter-mutter.h"
#include "cogl/cogl.h"
enum
{
@ -52,6 +54,8 @@ typedef struct _ClutterStageViewPrivate
CoglOffscreen *shadowfb;
CoglPipeline *shadowfb_pipeline;
CoglScanout *next_scanout;
gboolean has_redraw_clip;
cairo_region_t *redraw_clip;
@ -407,6 +411,26 @@ clutter_stage_default_get_offscreen_transformation_matrix (ClutterStageView *vie
cogl_matrix_init_identity (matrix);
}
void
clutter_stage_view_assign_next_scanout (ClutterStageView *view,
CoglScanout *scanout)
{
ClutterStageViewPrivate *priv =
clutter_stage_view_get_instance_private (view);
g_clear_object (&priv->next_scanout);
priv->next_scanout = scanout;
}
CoglScanout *
clutter_stage_view_take_scanout (ClutterStageView *view)
{
ClutterStageViewPrivate *priv =
clutter_stage_view_get_instance_private (view);
return g_steal_pointer (&priv->next_scanout);
}
static void
clutter_stage_view_get_property (GObject *object,
guint prop_id,

28
clutter/clutter/cogl/clutter-stage-cogl.c
View File

@ -959,6 +959,20 @@ clutter_stage_cogl_redraw_view (ClutterStageWindow *stage_window,
}
}
static void
clutter_stage_cogl_scanout_view (ClutterStageCogl *stage_cogl,
ClutterStageView *view,
CoglScanout *scanout)
{
CoglFramebuffer *framebuffer = clutter_stage_view_get_framebuffer (view);
CoglOnscreen *onscreen;
g_return_if_fail (cogl_is_onscreen (framebuffer));
onscreen = COGL_ONSCREEN (framebuffer);
cogl_onscreen_direct_scanout (onscreen, scanout);
}
static void
clutter_stage_cogl_redraw (ClutterStageWindow *stage_window)
{
@ -971,11 +985,23 @@ clutter_stage_cogl_redraw (ClutterStageWindow *stage_window)
for (l = _clutter_stage_window_get_views (stage_window); l; l = l->next)
{
ClutterStageView *view = l->data;
g_autoptr (CoglScanout) scanout = NULL;
if (!clutter_stage_view_has_redraw_clip (view))
continue;
swap_event |= clutter_stage_cogl_redraw_view (stage_window, view);
scanout = clutter_stage_view_take_scanout (view);
if (scanout)
{
clutter_stage_cogl_scanout_view (stage_cogl,
view,
scanout);
swap_event = TRUE;
}
else
{
swap_event |= clutter_stage_cogl_redraw_view (stage_window, view);
}
}
_clutter_stage_emit_after_paint (stage_cogl->wrapper);

2
cogl/cogl/cogl-onscreen.h
View File

@ -289,7 +289,7 @@ cogl_onscreen_swap_buffers_with_damage (CoglOnscreen *onscreen,
/**
* cogl_onscreen_direct_scanout: (skip)
*/
void
COGL_EXPORT void
cogl_onscreen_direct_scanout (CoglOnscreen *onscreen,
CoglScanout *scanout);