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cogl/frame: Keep track of target presentation time

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It's yet to be used for anything, but will later on.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2795>
This commit is contained in:
Jonas Ådahl 2022-10-26 19:45:46 +02:00
parent 08b0e563d4
commit e5602062e2
3 changed files with 23 additions and 0 deletions
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7
cogl/cogl/cogl-frame-info-private.h
View File

@ -78,10 +78,17 @@ struct _CoglFrameInfo
CoglTimestampQuery *timestamp_query;
int64_t gpu_time_before_buffer_swap_ns;
int64_t cpu_time_before_buffer_swap_us;
gboolean has_target_presentation_time;
int64_t target_presentation_time_us;
};
COGL_EXPORT
CoglFrameInfo *cogl_frame_info_new (CoglContext *context,
int64_t global_frame_counter);
COGL_EXPORT
void cogl_frame_info_set_target_presentation_time (CoglFrameInfo *info,
int64_t presentation_time_us);
#endif /* __COGL_FRAME_INFO_PRIVATE_H */

8
cogl/cogl/cogl-frame-info.c
View File

@ -142,3 +142,11 @@ cogl_frame_info_get_time_before_buffer_swap_us (CoglFrameInfo *info)
{
return info->cpu_time_before_buffer_swap_us;
}
void
cogl_frame_info_set_target_presentation_time (CoglFrameInfo *info,
int64_t presentation_time_us)
{
info->has_target_presentation_time = TRUE;
info->target_presentation_time_us = presentation_time_us;
}

8
src/backends/meta-stage-impl.c
View File

@ -265,6 +265,7 @@ swap_framebuffer (ClutterStageWindow *stage_window,
if (COGL_IS_ONSCREEN (framebuffer))
{
CoglOnscreen *onscreen = COGL_ONSCREEN (framebuffer);
int64_t target_presentation_time_us;
int *damage, n_rects, i;
CoglFrameInfo *frame_info;
@ -285,6 +286,13 @@ swap_framebuffer (ClutterStageWindow *stage_window,
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)
{