mutter/src/backends/meta-stage-impl.c
Daniel van Vugt 626498348b stage-impl: Blit damage regions of all ages when using a shadow FB
Original idea by Gert van de Kraats, modified to avoid having an
unused intermediate swap_region.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/2602
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3117>
2023-07-21 10:43:18 +00:00

883 lines
28 KiB
C

/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright (C) 2007,2008,2009,2010,2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
* Authors:
* Matthew Allum
* Robert Bragg
* Neil Roberts
* Emmanuele Bassi
*/
#include "config.h"
#include "backends/meta-stage-impl-private.h"
#include <stdlib.h>
#include <math.h>
#include "backends/meta-stage-view-private.h"
#include "clutter/clutter-mutter.h"
#include "cogl/cogl.h"
#include "core/util-private.h"
#include "meta/meta-backend.h"
#define MAX_STACK_RECTS 256
typedef struct _MetaStageImplPrivate
{
MetaBackend *backend;
int64_t global_frame_counter;
} MetaStageImplPrivate;
static void
clutter_stage_window_iface_init (ClutterStageWindowInterface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaStageImpl,
meta_stage_impl,
G_TYPE_OBJECT,
G_ADD_PRIVATE (MetaStageImpl)
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_STAGE_WINDOW,
clutter_stage_window_iface_init));
enum
{
PROP_0,
PROP_WRAPPER,
PROP_BACKEND,
N_PROPS
};
static GParamSpec *obj_props[N_PROPS];
static void
meta_stage_impl_unrealize (ClutterStageWindow *stage_window)
{
meta_topic (META_DEBUG_BACKEND, "Unrealizing Cogl stage [%p]", stage_window);
}
static gboolean
meta_stage_impl_realize (ClutterStageWindow *stage_window)
{
ClutterBackend *backend;
meta_topic (META_DEBUG_BACKEND,
"Realizing stage '%s' [%p]",
G_OBJECT_TYPE_NAME (stage_window),
stage_window);
backend = clutter_get_default_backend ();
if (backend->cogl_context == NULL)
{
g_warning ("Failed to realize stage: missing Cogl context");
return FALSE;
}
return TRUE;
}
static int64_t
meta_stage_impl_get_frame_counter (ClutterStageWindow *stage_window)
{
MetaStageImpl *stage_impl = META_STAGE_IMPL (stage_window);
MetaStageImplPrivate *priv =
meta_stage_impl_get_instance_private (stage_impl);
return priv->global_frame_counter;
}
static ClutterActor *
meta_stage_impl_get_wrapper (ClutterStageWindow *stage_window)
{
return CLUTTER_ACTOR (META_STAGE_IMPL (stage_window)->wrapper);
}
static void
meta_stage_impl_show (ClutterStageWindow *stage_window,
gboolean do_raise)
{
MetaStageImpl *stage_impl = META_STAGE_IMPL (stage_window);
clutter_actor_map (CLUTTER_ACTOR (stage_impl->wrapper));
}
static void
meta_stage_impl_hide (ClutterStageWindow *stage_window)
{
MetaStageImpl *stage_impl = META_STAGE_IMPL (stage_window);
clutter_actor_unmap (CLUTTER_ACTOR (stage_impl->wrapper));
}
static void
meta_stage_impl_resize (ClutterStageWindow *stage_window,
gint width,
gint height)
{
}
static void
paint_damage_region (ClutterStageWindow *stage_window,
ClutterStageView *view,
cairo_region_t *swap_region,
cairo_region_t *queued_redraw_clip)
{
CoglFramebuffer *framebuffer = clutter_stage_view_get_framebuffer (view);
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
static CoglPipeline *overlay_blue = NULL;
MetaStageImpl *stage_impl = META_STAGE_IMPL (stage_window);
ClutterActor *actor = CLUTTER_ACTOR (stage_impl->wrapper);
graphene_matrix_t transform;
int n_rects, i;
cogl_framebuffer_push_matrix (framebuffer);
clutter_actor_get_transform (actor, &transform);
cogl_framebuffer_transform (framebuffer, &transform);
/* Blue for the swap region */
if (G_UNLIKELY (overlay_blue == NULL))
{
overlay_blue = cogl_pipeline_new (ctx);
cogl_pipeline_set_color4ub (overlay_blue, 0x00, 0x00, 0x33, 0x33);
}
n_rects = cairo_region_num_rectangles (swap_region);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
float x_1, x_2, y_1, y_2;
cairo_region_get_rectangle (swap_region, i, &rect);
x_1 = rect.x;
x_2 = rect.x + rect.width;
y_1 = rect.y;
y_2 = rect.y + rect.height;
cogl_framebuffer_draw_rectangle (framebuffer, overlay_blue, x_1, y_1, x_2, y_2);
}
/* Red for the clip */
if (queued_redraw_clip)
{
static CoglPipeline *overlay_red = NULL;
if (G_UNLIKELY (overlay_red == NULL))
{
overlay_red = cogl_pipeline_new (ctx);
cogl_pipeline_set_color4ub (overlay_red, 0x33, 0x00, 0x00, 0x33);
}
n_rects = cairo_region_num_rectangles (queued_redraw_clip);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
float x_1, x_2, y_1, y_2;
cairo_region_get_rectangle (queued_redraw_clip, i, &rect);
x_1 = rect.x;
x_2 = rect.x + rect.width;
y_1 = rect.y;
y_2 = rect.y + rect.height;
cogl_framebuffer_draw_rectangle (framebuffer, overlay_red, x_1, y_1, x_2, y_2);
}
}
cogl_framebuffer_pop_matrix (framebuffer);
}
static void
queue_damage_region (ClutterStageWindow *stage_window,
ClutterStageView *stage_view,
cairo_region_t *damage_region)
{
int *damage, n_rects, i;
g_autofree int *freeme = NULL;
CoglFramebuffer *framebuffer;
CoglOnscreen *onscreen;
int fb_width;
int fb_height;
if (cairo_region_is_empty (damage_region))
return;
framebuffer = clutter_stage_view_get_onscreen (stage_view);
if (!COGL_IS_ONSCREEN (framebuffer))
return;
onscreen = COGL_ONSCREEN (framebuffer);
fb_width = cogl_framebuffer_get_width (framebuffer);
fb_height = cogl_framebuffer_get_height (framebuffer);
n_rects = cairo_region_num_rectangles (damage_region);
if (n_rects < MAX_STACK_RECTS)
damage = g_newa (int, n_rects * 4);
else
damage = freeme = g_new (int, n_rects * 4);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (damage_region, i, &rect);
clutter_stage_view_transform_rect_to_onscreen (stage_view,
&rect,
fb_width,
fb_height,
&rect);
damage[i * 4] = rect.x;
/* y coordinate needs to be flipped for OpenGL */
damage[i * 4 + 1] = fb_height - rect.y - rect.height;
damage[i * 4 + 2] = rect.width;
damage[i * 4 + 3] = rect.height;
}
cogl_onscreen_queue_damage_region (onscreen, damage, n_rects);
}
static void
swap_framebuffer (ClutterStageWindow *stage_window,
ClutterStageView *stage_view,
cairo_region_t *swap_region,
gboolean swap_with_damage,
ClutterFrame *frame)
{
MetaStageImpl *stage_impl = META_STAGE_IMPL (stage_window);
MetaStageImplPrivate *priv =
meta_stage_impl_get_instance_private (stage_impl);
CoglFramebuffer *framebuffer = clutter_stage_view_get_onscreen (stage_view);
CoglContext *cogl_context = cogl_framebuffer_get_context (framebuffer);
clutter_stage_view_before_swap_buffer (stage_view, swap_region);
if (COGL_IS_ONSCREEN (framebuffer))
{
CoglOnscreen *onscreen = COGL_ONSCREEN (framebuffer);
int64_t target_presentation_time_us;
int *damage, n_rects, i;
CoglFrameInfo *frame_info;
n_rects = cairo_region_num_rectangles (swap_region);
damage = g_newa (int, n_rects * 4);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (swap_region, i, &rect);
damage[i * 4] = rect.x;
damage[i * 4 + 1] = rect.y;
damage[i * 4 + 2] = rect.width;
damage[i * 4 + 3] = rect.height;
}
frame_info =
cogl_frame_info_new (cogl_context, priv->global_frame_counter);
priv->global_frame_counter++;
if (clutter_frame_get_target_presentation_time (frame,
&target_presentation_time_us))
{
cogl_frame_info_set_target_presentation_time (frame_info,
target_presentation_time_us);
}
/* push on the screen */
if (n_rects > 0 && !swap_with_damage)
{
meta_topic (META_DEBUG_BACKEND,
"cogl_onscreen_swap_region (onscreen: %p)",
onscreen);
cogl_onscreen_swap_region (onscreen,
damage, n_rects,
frame_info,
frame);
}
else
{
meta_topic (META_DEBUG_BACKEND,
"cogl_onscreen_swap_buffers (onscreen: %p)",
onscreen);
cogl_onscreen_swap_buffers_with_damage (onscreen,
damage, n_rects,
frame_info,
frame);
}
}
else
{
MetaStageView *view = META_STAGE_VIEW (stage_view);
meta_topic (META_DEBUG_BACKEND,
"fake offscreen swap (framebuffer: %p)",
framebuffer);
meta_stage_view_perform_fake_swap (view, priv->global_frame_counter);
priv->global_frame_counter++;
}
}
static cairo_region_t *
offset_scale_and_clamp_region (const cairo_region_t *region,
int offset_x,
int offset_y,
float scale)
{
int n_rects, i;
cairo_rectangle_int_t *rects;
g_autofree cairo_rectangle_int_t *freeme = NULL;
n_rects = cairo_region_num_rectangles (region);
if (n_rects == 0)
return cairo_region_create ();
if (n_rects < MAX_STACK_RECTS)
rects = g_newa (cairo_rectangle_int_t, n_rects);
else
rects = freeme = g_new (cairo_rectangle_int_t, n_rects);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t *rect = &rects[i];
graphene_rect_t tmp;
cairo_region_get_rectangle (region, i, rect);
_clutter_util_rect_from_rectangle (rect, &tmp);
graphene_rect_offset (&tmp, offset_x, offset_y);
graphene_rect_scale (&tmp, scale, scale, &tmp);
_clutter_util_rectangle_int_extents (&tmp, rect);
}
return cairo_region_create_rectangles (rects, n_rects);
}
static cairo_region_t *
scale_offset_and_clamp_region (const cairo_region_t *region,
float scale,
int offset_x,
int offset_y)
{
int n_rects, i;
cairo_rectangle_int_t *rects;
g_autofree cairo_rectangle_int_t *freeme = NULL;
n_rects = cairo_region_num_rectangles (region);
if (n_rects == 0)
return cairo_region_create ();
if (n_rects < MAX_STACK_RECTS)
rects = g_newa (cairo_rectangle_int_t, n_rects);
else
rects = freeme = g_new (cairo_rectangle_int_t, n_rects);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t *rect = &rects[i];
graphene_rect_t tmp;
cairo_region_get_rectangle (region, i, rect);
_clutter_util_rect_from_rectangle (rect, &tmp);
graphene_rect_scale (&tmp, scale, scale, &tmp);
graphene_rect_offset (&tmp, offset_x, offset_y);
_clutter_util_rectangle_int_extents (&tmp, rect);
}
return cairo_region_create_rectangles (rects, n_rects);
}
static void
paint_stage (MetaStageImpl *stage_impl,
ClutterStageView *stage_view,
cairo_region_t *redraw_clip,
ClutterFrame *frame)
{
ClutterStage *stage = stage_impl->wrapper;
_clutter_stage_maybe_setup_viewport (stage, stage_view);
clutter_stage_paint_view (stage, stage_view, redraw_clip, frame);
clutter_stage_view_after_paint (stage_view, redraw_clip);
}
static cairo_region_t *
transform_swap_region_to_onscreen (ClutterStageView *stage_view,
cairo_region_t *swap_region)
{
CoglFramebuffer *onscreen = clutter_stage_view_get_onscreen (stage_view);
int n_rects, i;
cairo_rectangle_int_t *rects;
cairo_region_t *transformed_region;
int width, height;
width = cogl_framebuffer_get_width (onscreen);
height = cogl_framebuffer_get_height (onscreen);
n_rects = cairo_region_num_rectangles (swap_region);
rects = g_newa (cairo_rectangle_int_t, n_rects);
for (i = 0; i < n_rects; i++)
{
cairo_region_get_rectangle (swap_region, i, &rects[i]);
clutter_stage_view_transform_rect_to_onscreen (stage_view,
&rects[i],
width,
height,
&rects[i]);
}
transformed_region = cairo_region_create_rectangles (rects, n_rects);
return transformed_region;
}
static gboolean
should_use_clipped_redraw (gboolean is_full_redraw,
gboolean has_buffer_age,
gboolean buffer_has_valid_damage_history,
ClutterDrawDebugFlag paint_debug_flags,
CoglFramebuffer *framebuffer,
ClutterStageWindow *stage_window)
{
gboolean can_blit_sub_buffer;
gboolean can_use_clipped_redraw;
gboolean is_warmed_up;
if (is_full_redraw)
return FALSE;
if (paint_debug_flags & CLUTTER_DEBUG_DISABLE_CLIPPED_REDRAWS)
return FALSE;
if (COGL_IS_OFFSCREEN (framebuffer))
return TRUE;
if (!buffer_has_valid_damage_history)
{
meta_topic (META_DEBUG_BACKEND,
"Invalid back buffer age: forcing full redraw");
return FALSE;
}
can_blit_sub_buffer =
cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_SWAP_REGION);
can_use_clipped_redraw =
_clutter_stage_window_can_clip_redraws (stage_window) &&
(can_blit_sub_buffer || has_buffer_age);
/* Some drivers struggle to get going and produce some junk
* frames when starting up... */
is_warmed_up =
cogl_onscreen_get_frame_counter (COGL_ONSCREEN (framebuffer)) > 3;
return is_warmed_up && can_use_clipped_redraw;
}
static void
meta_stage_impl_redraw_view_primary (MetaStageImpl *stage_impl,
ClutterStageView *stage_view,
ClutterFrame *frame)
{
ClutterStageWindow *stage_window = CLUTTER_STAGE_WINDOW (stage_impl);
MetaStageView *view = META_STAGE_VIEW (stage_view);
CoglFramebuffer *fb = clutter_stage_view_get_framebuffer (stage_view);
CoglFramebuffer *onscreen = clutter_stage_view_get_onscreen (stage_view);
cairo_rectangle_int_t view_rect;
gboolean is_full_redraw;
gboolean use_clipped_redraw;
gboolean buffer_has_valid_damage_history = FALSE;
gboolean has_buffer_age;
gboolean swap_with_damage;
cairo_region_t *redraw_clip;
cairo_region_t *queued_redraw_clip = NULL;
cairo_region_t *fb_clip_region;
cairo_region_t *swap_region;
ClutterDrawDebugFlag paint_debug_flags;
ClutterDamageHistory *damage_history;
float fb_scale;
int fb_width, fb_height;
int buffer_age = 0;
clutter_stage_view_get_layout (stage_view, &view_rect);
fb_scale = clutter_stage_view_get_scale (stage_view);
fb_width = cogl_framebuffer_get_width (fb);
fb_height = cogl_framebuffer_get_height (fb);
has_buffer_age =
COGL_IS_ONSCREEN (onscreen) &&
cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_BUFFER_AGE);
redraw_clip = clutter_stage_view_take_accumulated_redraw_clip (stage_view);
/* NB: a NULL redraw clip == full stage redraw */
if (!redraw_clip)
is_full_redraw = TRUE;
else
is_full_redraw = FALSE;
damage_history = meta_stage_view_get_damage_history (view);
if (has_buffer_age)
{
buffer_age = cogl_onscreen_get_buffer_age (COGL_ONSCREEN (onscreen));
buffer_has_valid_damage_history =
clutter_damage_history_is_age_valid (damage_history,
buffer_age);
}
meta_get_clutter_debug_flags (NULL, &paint_debug_flags, NULL);
use_clipped_redraw =
should_use_clipped_redraw (is_full_redraw,
has_buffer_age,
buffer_has_valid_damage_history,
paint_debug_flags,
onscreen,
stage_window);
if (use_clipped_redraw)
{
fb_clip_region = offset_scale_and_clamp_region (redraw_clip,
-view_rect.x,
-view_rect.y,
fb_scale);
if (G_UNLIKELY (paint_debug_flags & CLUTTER_DEBUG_PAINT_DAMAGE_REGION))
{
queued_redraw_clip =
scale_offset_and_clamp_region (fb_clip_region,
1.0 / fb_scale,
view_rect.x,
view_rect.y);
}
}
else
{
cairo_rectangle_int_t fb_rect;
fb_rect = (cairo_rectangle_int_t) {
.width = fb_width,
.height = fb_height,
};
fb_clip_region = cairo_region_create_rectangle (&fb_rect);
g_clear_pointer (&redraw_clip, cairo_region_destroy);
redraw_clip = cairo_region_create_rectangle (&view_rect);
if (G_UNLIKELY (paint_debug_flags & CLUTTER_DEBUG_PAINT_DAMAGE_REGION))
queued_redraw_clip = cairo_region_reference (redraw_clip);
}
g_return_if_fail (!cairo_region_is_empty (fb_clip_region));
/* XXX: It seems there will be a race here in that the stage
* window may be resized before the cogl_onscreen_swap_region
* is handled and so we may copy the wrong region. I can't
* really see how we can handle this with the current state of X
* but at least in this case a full redraw should be queued by
* the resize anyway so it should only exhibit temporary
* artefacts.
*/
/* swap_region does not need damage history, set it up before that */
if (!use_clipped_redraw)
swap_region = cairo_region_create ();
else if (clutter_stage_view_has_shadowfb (stage_view))
swap_region = cairo_region_reference (fb_clip_region);
else
swap_region = cairo_region_copy (fb_clip_region);
swap_with_damage = FALSE;
if (has_buffer_age)
{
clutter_damage_history_record (damage_history, fb_clip_region);
if (use_clipped_redraw)
{
int age;
for (age = 1; age <= buffer_age; age++)
{
const cairo_region_t *old_damage;
old_damage =
clutter_damage_history_lookup (damage_history, age);
cairo_region_union (fb_clip_region, old_damage);
}
meta_topic (META_DEBUG_BACKEND,
"Reusing back buffer(age=%d) - repairing region: num rects: %d",
buffer_age,
cairo_region_num_rectangles (fb_clip_region));
swap_with_damage = TRUE;
}
clutter_damage_history_step (damage_history);
}
if (use_clipped_redraw)
{
/* Regenerate redraw_clip because:
* 1. It's missing the regions added from damage_history above; and
* 2. If using fractional scaling then it might be a fraction of a
* logical pixel (or one physical pixel) smaller than
* fb_clip_region, due to the clamping from
* offset_scale_and_clamp_region. So we need to ensure redraw_clip
* is a superset of fb_clip_region to avoid such gaps.
*/
cairo_region_destroy (redraw_clip);
redraw_clip = scale_offset_and_clamp_region (fb_clip_region,
1.0 / fb_scale,
view_rect.x,
view_rect.y);
}
if (paint_debug_flags & CLUTTER_DEBUG_PAINT_DAMAGE_REGION)
{
cairo_region_t *debug_redraw_clip;
debug_redraw_clip = cairo_region_create_rectangle (&view_rect);
paint_stage (stage_impl, stage_view, debug_redraw_clip, frame);
cairo_region_destroy (debug_redraw_clip);
}
else if (use_clipped_redraw)
{
queue_damage_region (stage_window, stage_view, fb_clip_region);
cogl_framebuffer_push_region_clip (fb, fb_clip_region);
paint_stage (stage_impl, stage_view, redraw_clip, frame);
cogl_framebuffer_pop_clip (fb);
}
else
{
meta_topic (META_DEBUG_BACKEND, "Unclipped stage paint");
paint_stage (stage_impl, stage_view, redraw_clip, frame);
}
g_clear_pointer (&redraw_clip, cairo_region_destroy);
g_clear_pointer (&fb_clip_region, cairo_region_destroy);
COGL_TRACE_BEGIN_SCOPED (MetaStageImplRedrawViewSwapFramebuffer,
"Paint (swap framebuffer)");
if (queued_redraw_clip)
{
cairo_region_t *swap_region_in_stage_space;
swap_region_in_stage_space =
scale_offset_and_clamp_region (swap_region,
1.0f / fb_scale,
view_rect.x,
view_rect.y);
cairo_region_subtract (swap_region_in_stage_space, queued_redraw_clip);
paint_damage_region (stage_window, stage_view,
swap_region_in_stage_space, queued_redraw_clip);
cairo_region_destroy (queued_redraw_clip);
cairo_region_destroy (swap_region_in_stage_space);
}
if (clutter_stage_view_get_onscreen (stage_view) !=
clutter_stage_view_get_framebuffer (stage_view))
{
cairo_region_t *transformed_swap_region;
transformed_swap_region =
transform_swap_region_to_onscreen (stage_view, swap_region);
cairo_region_destroy (swap_region);
swap_region = transformed_swap_region;
}
swap_framebuffer (stage_window,
stage_view,
swap_region,
swap_with_damage,
frame);
cairo_region_destroy (swap_region);
}
static gboolean
meta_stage_impl_scanout_view (MetaStageImpl *stage_impl,
ClutterStageView *stage_view,
CoglScanout *scanout,
ClutterFrame *frame,
GError **error)
{
MetaStageImplPrivate *priv =
meta_stage_impl_get_instance_private (stage_impl);
CoglFramebuffer *framebuffer =
clutter_stage_view_get_onscreen (stage_view);
CoglContext *cogl_context = cogl_framebuffer_get_context (framebuffer);
CoglOnscreen *onscreen;
CoglFrameInfo *frame_info;
g_assert (COGL_IS_ONSCREEN (framebuffer));
onscreen = COGL_ONSCREEN (framebuffer);
frame_info = cogl_frame_info_new (cogl_context, priv->global_frame_counter);
if (!cogl_onscreen_direct_scanout (onscreen,
scanout,
frame_info,
frame,
error))
{
cogl_object_unref (frame_info);
return FALSE;
}
priv->global_frame_counter++;
return TRUE;
}
static void
meta_stage_impl_redraw_view (ClutterStageWindow *stage_window,
ClutterStageView *stage_view,
ClutterFrame *frame)
{
MetaStageImpl *stage_impl = META_STAGE_IMPL (stage_window);
g_autoptr (CoglScanout) scanout = NULL;
scanout = clutter_stage_view_take_scanout (stage_view);
if (scanout)
{
g_autoptr (GError) error = NULL;
if (meta_stage_impl_scanout_view (stage_impl,
stage_view,
scanout,
frame,
&error))
{
clutter_stage_view_accumulate_redraw_clip (stage_view);
return;
}
if (!g_error_matches (error,
COGL_SCANOUT_ERROR,
COGL_SCANOUT_ERROR_INHIBITED))
g_warning ("Failed to scan out client buffer: %s", error->message);
}
meta_stage_impl_redraw_view_primary (stage_impl, stage_view, frame);
}
void
meta_stage_impl_add_onscreen_frame_info (MetaStageImpl *stage_impl,
ClutterStageView *stage_view)
{
MetaStageImplPrivate *priv =
meta_stage_impl_get_instance_private (stage_impl);
CoglFramebuffer *framebuffer = clutter_stage_view_get_onscreen (stage_view);
CoglContext *cogl_context = cogl_framebuffer_get_context (framebuffer);
CoglFrameInfo *frame_info;
frame_info = cogl_frame_info_new (cogl_context, priv->global_frame_counter);
priv->global_frame_counter++;
cogl_onscreen_add_frame_info (COGL_ONSCREEN (framebuffer), frame_info);
}
static void
clutter_stage_window_iface_init (ClutterStageWindowInterface *iface)
{
iface->realize = meta_stage_impl_realize;
iface->unrealize = meta_stage_impl_unrealize;
iface->get_wrapper = meta_stage_impl_get_wrapper;
iface->resize = meta_stage_impl_resize;
iface->show = meta_stage_impl_show;
iface->hide = meta_stage_impl_hide;
iface->get_frame_counter = meta_stage_impl_get_frame_counter;
iface->redraw_view = meta_stage_impl_redraw_view;
}
static void
meta_stage_impl_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaStageImpl *self = META_STAGE_IMPL (gobject);
MetaStageImplPrivate *priv = meta_stage_impl_get_instance_private (self);
switch (prop_id)
{
case PROP_WRAPPER:
self->wrapper = g_value_get_object (value);
break;
case PROP_BACKEND:
priv->backend = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
meta_stage_impl_class_init (MetaStageImplClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = meta_stage_impl_set_property;
obj_props[PROP_WRAPPER] =
g_param_spec_object ("wrapper", NULL, NULL,
CLUTTER_TYPE_STAGE,
G_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_BACKEND] =
g_param_spec_object ("backend", NULL, NULL,
META_TYPE_BACKEND,
G_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, N_PROPS, obj_props);
}
static void
meta_stage_impl_init (MetaStageImpl *stage)
{
}
MetaBackend *
meta_stage_impl_get_backend (MetaStageImpl *stage_impl)
{
MetaStageImplPrivate *priv =
meta_stage_impl_get_instance_private (stage_impl);
return priv->backend;
}