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mutter/clutter/cogl/clutter-stage-cogl.c
Adel Gadllah 2639395533 stage-cogl: Fix buffer_age code path 
Currently we where checking whether the damage_history list contains
more or equal then buffer_age entries. This is wrong because we prepend
our current clip to the list just before the check.

Fix that to check whether we have more entries instead of more or equal.

https://bugzilla.gnome.org/show_bug.cgi?id=724788
2014-02-20 12:00:20 +01:00

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/*
* 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
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define CLUTTER_ENABLE_EXPERIMENTAL_API
#include "clutter-config.h"
#include "clutter-stage-cogl.h"
#include "clutter-actor-private.h"
#include "clutter-backend-private.h"
#include "clutter-debug.h"
#include "clutter-event.h"
#include "clutter-enum-types.h"
#include "clutter-feature.h"
#include "clutter-main.h"
#include "clutter-private.h"
#include "clutter-profile.h"
#include "clutter-stage-private.h"
static void clutter_stage_window_iface_init (ClutterStageWindowIface *iface);
G_DEFINE_TYPE_WITH_CODE (ClutterStageCogl,
_clutter_stage_cogl,
G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_STAGE_WINDOW,
clutter_stage_window_iface_init));
enum {
PROP_0,
PROP_WRAPPER,
PROP_BACKEND,
PROP_LAST
};
static void
clutter_stage_cogl_unrealize (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
CLUTTER_NOTE (BACKEND, "Unrealizing Cogl stage [%p]", stage_cogl);
if (stage_cogl->onscreen != NULL)
{
cogl_onscreen_remove_frame_callback (stage_cogl->onscreen,
stage_cogl->frame_closure);
stage_cogl->frame_closure = NULL;
cogl_object_unref (stage_cogl->onscreen);
stage_cogl->onscreen = NULL;
}
}
static void
frame_cb (CoglOnscreen *onscreen,
CoglFrameEvent event,
CoglFrameInfo *info,
void *user_data)
{
ClutterStageCogl *stage_cogl = user_data;
if (event == COGL_FRAME_EVENT_SYNC)
{
/* Early versions of the swap_event implementation in Mesa
* deliver BufferSwapComplete event when not selected for,
* so if we get a swap event we aren't expecting, just ignore it.
*
* https://bugs.freedesktop.org/show_bug.cgi?id=27962
*
* FIXME: This issue can be hidden inside Cogl so we shouldn't
* need to care about this bug here.
*/
if (stage_cogl->pending_swaps > 0)
stage_cogl->pending_swaps--;
}
else if (event == COGL_FRAME_EVENT_COMPLETE)
{
gint64 presentation_time_cogl = cogl_frame_info_get_presentation_time (info);
if (presentation_time_cogl != 0)
{
CoglContext *context = cogl_framebuffer_get_context (COGL_FRAMEBUFFER (onscreen));
gint64 current_time_cogl = cogl_get_clock_time (context);
gint64 now = g_get_monotonic_time ();
stage_cogl->last_presentation_time =
now + (presentation_time_cogl - current_time_cogl) / 1000;
}
stage_cogl->refresh_rate = cogl_frame_info_get_refresh_rate (info);
}
}
static gboolean
clutter_stage_cogl_realize (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
ClutterBackend *backend;
CoglFramebuffer *framebuffer;
GError *error = NULL;
gfloat width = 800;
gfloat height = 600;
CLUTTER_NOTE (BACKEND, "Realizing stage '%s' [%p]",
G_OBJECT_TYPE_NAME (stage_cogl),
stage_cogl);
backend = clutter_get_default_backend ();
if (stage_cogl->onscreen == NULL)
{
stage_cogl->onscreen = cogl_onscreen_new (backend->cogl_context,
width, height);
}
cogl_onscreen_set_swap_throttled (stage_cogl->onscreen,
_clutter_get_sync_to_vblank ());
framebuffer = COGL_FRAMEBUFFER (stage_cogl->onscreen);
if (!cogl_framebuffer_allocate (framebuffer, &error))
{
g_warning ("Failed to allocate stage: %s", error->message);
g_error_free (error);
cogl_object_unref (stage_cogl->onscreen);
stage_cogl->onscreen = NULL;
return FALSE;
}
/* FIXME: for fullscreen Cogl platforms then the size we gave
* will be ignored, so we need to make sure the stage size is
* updated to this size. */
stage_cogl->frame_closure =
cogl_onscreen_add_frame_callback (stage_cogl->onscreen,
frame_cb,
stage_cogl,
NULL);
return TRUE;
}
static void
clutter_stage_cogl_schedule_update (ClutterStageWindow *stage_window,
gint sync_delay)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
gint64 now;
float refresh_rate;
gint64 refresh_interval;
if (stage_cogl->update_time != -1)
return;
now = g_get_monotonic_time ();
if (sync_delay < 0)
{
stage_cogl->update_time = now;
return;
}
/* We only extrapolate presentation times for 150ms - this is somewhat
* arbitrary. The reasons it might not be accurate for larger times are
* that the refresh interval might be wrong or the vertical refresh
* might be downclocked if nothing is going on onscreen.
*/
if (stage_cogl->last_presentation_time == 0||
stage_cogl->last_presentation_time < now - 150000)
{
stage_cogl->update_time = now;
return;
}
refresh_rate = stage_cogl->refresh_rate;
if (refresh_rate == 0.0)
refresh_rate = 60.0;
refresh_interval = (gint64) (0.5 + 1000000 / refresh_rate);
if (refresh_interval == 0)
refresh_interval = 16667; /* 1/60th second */
stage_cogl->update_time = stage_cogl->last_presentation_time + 1000 * sync_delay;
while (stage_cogl->update_time < now)
stage_cogl->update_time += refresh_interval;
}
static gint64
clutter_stage_cogl_get_update_time (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
if (stage_cogl->pending_swaps)
return -1; /* in the future, indefinite */
return stage_cogl->update_time;
}
static void
clutter_stage_cogl_clear_update_time (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
stage_cogl->update_time = -1;
}
static ClutterActor *
clutter_stage_cogl_get_wrapper (ClutterStageWindow *stage_window)
{
return CLUTTER_ACTOR (CLUTTER_STAGE_COGL (stage_window)->wrapper);
}
static void
clutter_stage_cogl_show (ClutterStageWindow *stage_window,
gboolean do_raise)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
clutter_actor_map (CLUTTER_ACTOR (stage_cogl->wrapper));
}
static void
clutter_stage_cogl_hide (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
clutter_actor_unmap (CLUTTER_ACTOR (stage_cogl->wrapper));
}
static void
clutter_stage_cogl_get_geometry (ClutterStageWindow *stage_window,
cairo_rectangle_int_t *geometry)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
int window_scale;
window_scale = _clutter_stage_window_get_scale_factor (stage_window);
if (geometry != NULL)
{
if (stage_cogl->onscreen)
{
CoglFramebuffer *framebuffer =
COGL_FRAMEBUFFER (stage_cogl->onscreen);
geometry->x = geometry->y = 0;
geometry->width = cogl_framebuffer_get_width (framebuffer) / window_scale;
geometry->height = cogl_framebuffer_get_height (framebuffer) / window_scale;
}
else
{
geometry->x = geometry->y = 0;
geometry->width = 800;
geometry->height = 600;
}
}
}
static void
clutter_stage_cogl_resize (ClutterStageWindow *stage_window,
gint width,
gint height)
{
}
static gboolean
clutter_stage_cogl_has_redraw_clips (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
/* NB: at the start of each new frame there is an implied clip that
* clips everything (i.e. nothing would be drawn) so we need to make
* sure we return True in the un-initialized case here.
*
* NB: a clip width of 0 means a full stage redraw has been queued
* so we effectively don't have any redraw clips in that case.
*/
if (!stage_cogl->initialized_redraw_clip ||
(stage_cogl->initialized_redraw_clip &&
stage_cogl->bounding_redraw_clip.width != 0))
return TRUE;
else
return FALSE;
}
static gboolean
clutter_stage_cogl_ignoring_redraw_clips (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
/* NB: a clip width of 0 means a full stage redraw is required */
if (stage_cogl->initialized_redraw_clip &&
stage_cogl->bounding_redraw_clip.width == 0)
return TRUE;
else
return FALSE;
}
/* A redraw clip represents (in stage coordinates) the bounding box of
* something that needs to be redraw. Typically they are added to the
* StageWindow as a result of clutter_actor_queue_clipped_redraw() by
* actors such as ClutterGLXTexturePixmap. All redraw clips are
* discarded after the next paint.
*
* A NULL stage_clip means the whole stage needs to be redrawn.
*
* What we do with this information:
* - we keep track of the bounding box for all redraw clips
* - when we come to redraw; we scissor the redraw to that box and use
* glBlitFramebuffer to present the redraw to the front
* buffer.
*/
static void
clutter_stage_cogl_add_redraw_clip (ClutterStageWindow *stage_window,
cairo_rectangle_int_t *stage_clip)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
/* If we are already forced to do a full stage redraw then bail early */
if (clutter_stage_cogl_ignoring_redraw_clips (stage_window))
return;
/* A NULL stage clip means a full stage redraw has been queued and
* we keep track of this by setting a zero width
* stage_cogl->bounding_redraw_clip */
if (stage_clip == NULL)
{
stage_cogl->bounding_redraw_clip.width = 0;
stage_cogl->initialized_redraw_clip = TRUE;
return;
}
/* Ignore requests to add degenerate/empty clip rectangles */
if (stage_clip->width == 0 || stage_clip->height == 0)
return;
if (!stage_cogl->initialized_redraw_clip)
{
stage_cogl->bounding_redraw_clip = *stage_clip;
}
else if (stage_cogl->bounding_redraw_clip.width > 0)
{
_clutter_util_rectangle_union (&stage_cogl->bounding_redraw_clip,
stage_clip,
&stage_cogl->bounding_redraw_clip);
}
stage_cogl->initialized_redraw_clip = TRUE;
}
static gboolean
clutter_stage_cogl_get_redraw_clip_bounds (ClutterStageWindow *stage_window,
cairo_rectangle_int_t *stage_clip)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
if (stage_cogl->using_clipped_redraw)
{
*stage_clip = stage_cogl->bounding_redraw_clip;
return TRUE;
}
return FALSE;
}
/* XXX: This is basically identical to clutter_stage_glx_redraw */
static void
clutter_stage_cogl_redraw (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
cairo_rectangle_int_t geom;
gboolean have_clip;
gboolean may_use_clipped_redraw;
gboolean use_clipped_redraw;
gboolean can_blit_sub_buffer;
gboolean has_buffer_age;
ClutterActor *wrapper;
cairo_rectangle_int_t *clip_region;
gboolean force_swap;
int window_scale;
CLUTTER_STATIC_TIMER (painting_timer,
"Redrawing", /* parent */
"Painting actors",
"The time spent painting actors",
0 /* no application private data */);
CLUTTER_STATIC_TIMER (swapbuffers_timer,
"Redrawing", /* parent */
"SwapBuffers",
"The time spent blocked by SwapBuffers",
0 /* no application private data */);
CLUTTER_STATIC_TIMER (blit_sub_buffer_timer,
"Redrawing", /* parent */
"blit_sub_buffer",
"The time spent in blit_sub_buffer",
0 /* no application private data */);
wrapper = CLUTTER_ACTOR (stage_cogl->wrapper);
if (!stage_cogl->onscreen)
return;
CLUTTER_TIMER_START (_clutter_uprof_context, painting_timer);
can_blit_sub_buffer =
cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_SWAP_REGION);
has_buffer_age = cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_BUFFER_AGE);
_clutter_stage_window_get_geometry (stage_window, &geom);
/* NB: a zero width redraw clip == full stage redraw */
have_clip = (stage_cogl->bounding_redraw_clip.width != 0 &&
!(stage_cogl->bounding_redraw_clip.x == 0 &&
stage_cogl->bounding_redraw_clip.y == 0 &&
stage_cogl->bounding_redraw_clip.width == geom.width &&
stage_cogl->bounding_redraw_clip.height == geom.height));
may_use_clipped_redraw = FALSE;
if (_clutter_stage_window_can_clip_redraws (stage_window) &&
can_blit_sub_buffer &&
have_clip &&
/* some drivers struggle to get going and produce some junk
* frames when starting up... */
stage_cogl->frame_count > 3)
{
may_use_clipped_redraw = TRUE;
clip_region = &stage_cogl->bounding_redraw_clip;
}
if (may_use_clipped_redraw &&
G_LIKELY (!(clutter_paint_debug_flags & CLUTTER_DEBUG_DISABLE_CLIPPED_REDRAWS)))
use_clipped_redraw = TRUE;
else
use_clipped_redraw = FALSE;
force_swap = FALSE;
window_scale = _clutter_stage_window_get_scale_factor (stage_window);
if (use_clipped_redraw)
{
if (has_buffer_age)
{
int age = cogl_onscreen_get_buffer_age (stage_cogl->onscreen);
cairo_rectangle_int_t *current_damage;
current_damage = g_new0 (cairo_rectangle_int_t, 1);
current_damage->x = clip_region->x;
current_damage->y = clip_region->y;
current_damage->width = clip_region->width;
current_damage->height = clip_region->height;
stage_cogl->damage_history = g_slist_prepend (stage_cogl->damage_history, current_damage);
if (age != 0 && !stage_cogl->dirty_backbuffer && g_slist_length (stage_cogl->damage_history) > age)
{
int i = 0;
GSList *tmp = NULL;
/* We skip the first entry because it is the clip_region itself */
for (tmp = stage_cogl->damage_history->next; tmp; tmp = tmp->next)
{
_clutter_util_rectangle_union (clip_region, tmp->data, clip_region);
i++;
if (i == age)
{
g_slist_free_full (tmp->next, g_free);
tmp->next = NULL;
}
}
force_swap = TRUE;
CLUTTER_NOTE (CLIPPING, "Reusing back buffer - repairing region: x=%d, y=%d, width=%d, height=%d\n",
clip_region->x,
clip_region->y,
clip_region->width,
clip_region->height);
}
else if (age == 0 || stage_cogl->dirty_backbuffer)
{
CLUTTER_NOTE (CLIPPING, "Invalid back buffer: Resetting damage history list.\n");
g_slist_free_full (stage_cogl->damage_history, g_free);
stage_cogl->damage_history = NULL;
}
}
}
else
{
CLUTTER_NOTE (CLIPPING, "Unclipped redraw: Resetting damage history list.\n");
g_slist_free_full (stage_cogl->damage_history, g_free);
stage_cogl->damage_history = NULL;
}
if (has_buffer_age && !force_swap)
use_clipped_redraw = FALSE;
if (use_clipped_redraw)
{
CoglFramebuffer *fb = COGL_FRAMEBUFFER (stage_cogl->onscreen);
CLUTTER_NOTE (CLIPPING,
"Stage clip pushed: x=%d, y=%d, width=%d, height=%d\n",
clip_region->x,
clip_region->y,
clip_region->width,
clip_region->height);
stage_cogl->using_clipped_redraw = TRUE;
cogl_framebuffer_push_scissor_clip (fb,
clip_region->x * window_scale,
clip_region->y * window_scale,
clip_region->width * window_scale,
clip_region->height * window_scale);
_clutter_stage_do_paint (CLUTTER_STAGE (wrapper), clip_region);
cogl_framebuffer_pop_clip (fb);
stage_cogl->using_clipped_redraw = FALSE;
}
else
{
CLUTTER_NOTE (CLIPPING, "Unclipped stage paint\n");
/* If we are trying to debug redraw issues then we want to pass
* the bounding_redraw_clip so it can be visualized */
if (G_UNLIKELY (clutter_paint_debug_flags & CLUTTER_DEBUG_DISABLE_CLIPPED_REDRAWS) &&
may_use_clipped_redraw)
{
_clutter_stage_do_paint (CLUTTER_STAGE (wrapper),
clip_region);
}
else
_clutter_stage_do_paint (CLUTTER_STAGE (wrapper), NULL);
}
if (may_use_clipped_redraw &&
G_UNLIKELY ((clutter_paint_debug_flags & CLUTTER_DEBUG_REDRAWS)))
{
CoglFramebuffer *fb = COGL_FRAMEBUFFER (stage_cogl->onscreen);
CoglContext *ctx = cogl_framebuffer_get_context (fb);
static CoglPipeline *outline = NULL;
cairo_rectangle_int_t *clip = &stage_cogl->bounding_redraw_clip;
ClutterActor *actor = CLUTTER_ACTOR (wrapper);
float x_1 = clip->x * window_scale;
float x_2 = clip->x + clip->width * window_scale;
float y_1 = clip->y * window_scale;
float y_2 = clip->y + clip->height * window_scale;
CoglVertexP2 quad[4] = {
{ x_1, y_1 },
{ x_2, y_1 },
{ x_2, y_2 },
{ x_1, y_2 }
};
CoglPrimitive *prim;
CoglMatrix modelview;
if (outline == NULL)
{
outline = cogl_pipeline_new (ctx);
cogl_pipeline_set_color4ub (outline, 0xff, 0x00, 0x00, 0xff);
}
prim = cogl_primitive_new_p2 (ctx,
COGL_VERTICES_MODE_LINE_LOOP,
4, /* n_vertices */
quad);
cogl_framebuffer_push_matrix (fb);
cogl_matrix_init_identity (&modelview);
_clutter_actor_apply_modelview_transform (actor, &modelview);
cogl_framebuffer_set_modelview_matrix (fb, &modelview);
cogl_framebuffer_draw_primitive (COGL_FRAMEBUFFER (stage_cogl->onscreen),
outline,
prim);
cogl_framebuffer_pop_matrix (fb);
cogl_object_unref (prim);
}
CLUTTER_TIMER_STOP (_clutter_uprof_context, painting_timer);
/* push on the screen */
if (use_clipped_redraw && !force_swap)
{
cairo_rectangle_int_t *clip = clip_region;
int copy_area[4];
/* 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.
*/
copy_area[0] = clip->x * window_scale;
copy_area[1] = clip->y * window_scale;
copy_area[2] = clip->width * window_scale;
copy_area[3] = clip->height * window_scale;
CLUTTER_NOTE (BACKEND,
"cogl_onscreen_swap_region (onscreen: %p, "
"x: %d, y: %d, "
"width: %d, height: %d)",
stage_cogl->onscreen,
copy_area[0], copy_area[1], copy_area[2], copy_area[3]);
CLUTTER_TIMER_START (_clutter_uprof_context, blit_sub_buffer_timer);
cogl_onscreen_swap_region (stage_cogl->onscreen, copy_area, 1);
CLUTTER_TIMER_STOP (_clutter_uprof_context, blit_sub_buffer_timer);
}
else
{
CLUTTER_NOTE (BACKEND, "cogl_onscreen_swap_buffers (onscreen: %p)",
stage_cogl->onscreen);
/* If we have swap buffer events then cogl_onscreen_swap_buffers
* will return immediately and we need to track that there is a
* swap in progress... */
if (clutter_feature_available (CLUTTER_FEATURE_SWAP_EVENTS))
stage_cogl->pending_swaps++;
CLUTTER_TIMER_START (_clutter_uprof_context, swapbuffers_timer);
cogl_onscreen_swap_buffers (stage_cogl->onscreen);
CLUTTER_TIMER_STOP (_clutter_uprof_context, swapbuffers_timer);
}
/* reset the redraw clipping for the next paint... */
stage_cogl->initialized_redraw_clip = FALSE;
/* We have repaired the backbuffer */
stage_cogl->dirty_backbuffer = FALSE;
stage_cogl->frame_count++;
}
static CoglFramebuffer *
clutter_stage_cogl_get_active_framebuffer (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
return COGL_FRAMEBUFFER (stage_cogl->onscreen);
}
static void
clutter_stage_cogl_dirty_back_buffer (ClutterStageWindow *stage_window)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
stage_cogl->dirty_backbuffer = TRUE;
}
static void
clutter_stage_cogl_get_dirty_pixel (ClutterStageWindow *stage_window,
int *x,
int *y)
{
ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);
gboolean has_buffer_age = cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_BUFFER_AGE);
if ((stage_cogl->damage_history == NULL && has_buffer_age) || !has_buffer_age)
{
*x = 0;
*y = 0;
}
else
{
cairo_rectangle_int_t *rect;
rect = (cairo_rectangle_int_t *) (stage_cogl->damage_history->data);
*x = rect->x;
*y = rect->y;
}
}
static void
clutter_stage_window_iface_init (ClutterStageWindowIface *iface)
{
iface->realize = clutter_stage_cogl_realize;
iface->unrealize = clutter_stage_cogl_unrealize;
iface->get_wrapper = clutter_stage_cogl_get_wrapper;
iface->get_geometry = clutter_stage_cogl_get_geometry;
iface->resize = clutter_stage_cogl_resize;
iface->show = clutter_stage_cogl_show;
iface->hide = clutter_stage_cogl_hide;
iface->schedule_update = clutter_stage_cogl_schedule_update;
iface->get_update_time = clutter_stage_cogl_get_update_time;
iface->clear_update_time = clutter_stage_cogl_clear_update_time;
iface->add_redraw_clip = clutter_stage_cogl_add_redraw_clip;
iface->has_redraw_clips = clutter_stage_cogl_has_redraw_clips;
iface->ignoring_redraw_clips = clutter_stage_cogl_ignoring_redraw_clips;
iface->get_redraw_clip_bounds = clutter_stage_cogl_get_redraw_clip_bounds;
iface->redraw = clutter_stage_cogl_redraw;
iface->get_active_framebuffer = clutter_stage_cogl_get_active_framebuffer;
iface->dirty_back_buffer = clutter_stage_cogl_dirty_back_buffer;
iface->get_dirty_pixel = clutter_stage_cogl_get_dirty_pixel;
}
static void
clutter_stage_cogl_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterStageCogl *self = CLUTTER_STAGE_COGL (gobject);
switch (prop_id)
{
case PROP_WRAPPER:
self->wrapper = g_value_get_object (value);
break;
case PROP_BACKEND:
self->backend = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
_clutter_stage_cogl_class_init (ClutterStageCoglClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = clutter_stage_cogl_set_property;
g_object_class_override_property (gobject_class, PROP_WRAPPER, "wrapper");
g_object_class_override_property (gobject_class, PROP_BACKEND, "backend");
}
static void
_clutter_stage_cogl_init (ClutterStageCogl *stage)
{
stage->last_presentation_time = 0;
stage->refresh_rate = 0.0;
stage->update_time = -1;
}
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