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frame-clock: Add callback before the actual frame callback

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Aimed to have the frame listener do things like processing events before
the actual frame. In between the before-frame and actual frame,
timelines will be advanced.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1285
This commit is contained in:
Jonas Ådahl 2020-03-25 09:20:38 +01:00
parent 6ffdfff9ee
commit cae5b99537
3 changed files with 83 additions and 1 deletions
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14
clutter/clutter/clutter-frame-clock.c
View File

@ -255,6 +255,7 @@ static gboolean
clutter_frame_clock_dispatch (gpointer user_data)
{
ClutterFrameClock *frame_clock = user_data;
int64_t frame_count;
ClutterFrameResult result;
COGL_TRACE_BEGIN_SCOPED (ClutterFrameCLockDispatch, "Frame Clock (dispatch)");
@ -263,9 +264,20 @@ clutter_frame_clock_dispatch (gpointer user_data)
frame_clock->state = CLUTTER_FRAME_CLOCK_STATE_DISPATCHING;
frame_count = frame_clock->frame_count++;
COGL_TRACE_BEGIN (ClutterFrameClockEvents, "Frame Clock (before frame)");
if (frame_clock->listener.iface->before_frame)
{
frame_clock->listener.iface->before_frame (frame_clock,
frame_count,
frame_clock->listener.user_data);
}
COGL_TRACE_END (ClutterFrameClockEvents);
COGL_TRACE_BEGIN (ClutterFrameClockFrame, "Frame Clock (frame)");
result = frame_clock->listener.iface->frame (frame_clock,
frame_clock->frame_count++,
frame_count,
frame_clock->listener.user_data);
COGL_TRACE_END (ClutterFrameClockFrame);

3
clutter/clutter/clutter-frame-clock.h
View File

@ -38,6 +38,9 @@ G_DECLARE_FINAL_TYPE (ClutterFrameClock, clutter_frame_clock,
typedef struct _ClutterFrameListenerIface
{
void (* before_frame) (ClutterFrameClock *frame_clock,
int64_t frame_count,
gpointer user_data);
ClutterFrameResult (* frame) (ClutterFrameClock *frame_clock,
int64_t frame_count,
gpointer user_data);

67
src/tests/clutter/conform/frame-clock.c
View File

@ -458,10 +458,77 @@ frame_clock_schedule_update_now (void)
g_source_unref (source);
}
static void
before_frame_frame_clock_before_frame (ClutterFrameClock *frame_clock,
int64_t frame_count,
gpointer user_data)
{
int64_t *expected_frame_count = user_data;
g_assert_cmpint (*expected_frame_count, ==, frame_count);
}
static ClutterFrameResult
before_frame_frame_clock_frame (ClutterFrameClock *frame_clock,
int64_t frame_count,
gpointer user_data)
{
int64_t *expected_frame_count = user_data;
g_assert_cmpint (*expected_frame_count, ==, frame_count);
(*expected_frame_count)++;
clutter_frame_clock_notify_presented (frame_clock, g_get_monotonic_time ());
clutter_frame_clock_schedule_update (frame_clock);
return CLUTTER_FRAME_RESULT_PENDING_PRESENTED;
}
static const ClutterFrameListenerIface before_frame_frame_listener_iface = {
.before_frame = before_frame_frame_clock_before_frame,
.frame = before_frame_frame_clock_frame,
};
static gboolean
quit_main_loop_timeout (gpointer user_data)
{
GMainLoop *main_loop = user_data;
g_main_loop_quit (main_loop);
return G_SOURCE_REMOVE;
}
static void
frame_clock_before_frame (void)
{
GMainLoop *main_loop;
ClutterFrameClock *frame_clock;
expected_frame_count = 0;
main_loop = g_main_loop_new (NULL, FALSE);
frame_clock = clutter_frame_clock_new (refresh_rate,
&before_frame_frame_listener_iface,
&expected_frame_count);
clutter_frame_clock_schedule_update (frame_clock);
g_timeout_add (100, quit_main_loop_timeout, main_loop);
g_main_loop_run (main_loop);
/* We should have at least processed a couple of frames within 100 ms. */
g_assert_cmpint (expected_frame_count, >, 2);
g_main_loop_unref (main_loop);
g_object_unref (frame_clock);
}
CLUTTER_TEST_SUITE (
CLUTTER_TEST_UNIT ("/frame-clock/schedule-update", frame_clock_schedule_update)
CLUTTER_TEST_UNIT ("/frame-clock/immediate-present", frame_clock_immediate_present)
CLUTTER_TEST_UNIT ("/frame-clock/delayed-damage", frame_clock_delayed_damage)
CLUTTER_TEST_UNIT ("/frame-clock/no-damage", frame_clock_no_damage)
CLUTTER_TEST_UNIT ("/frame-clock/schedule-update-now", frame_clock_schedule_update_now)
CLUTTER_TEST_UNIT ("/frame-clock/before-frame", frame_clock_before_frame)
)