From 6c649bab537f75ebf4def87be2a59c860bcc6859 Mon Sep 17 00:00:00 2001 From: Simon Ser Date: Sat, 16 Nov 2019 22:15:33 +0100 Subject: output: add wlr_output_event_present.commit_seq This is set to the value of wlr_output.commit_seq when the frame has been submitted. This allows tracking presentation with more then 1 full frame of latency. References: https://github.com/swaywm/wlroots/issues/1917 --- backend/drm/drm.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'backend/drm') diff --git a/backend/drm/drm.c b/backend/drm/drm.c index 9bcafeb6..fc6834ff 100644 --- a/backend/drm/drm.c +++ b/backend/drm/drm.c @@ -1497,6 +1497,9 @@ static void page_flip_handler(int fd, unsigned seq, .tv_nsec = tv_usec * 1000, }; struct wlr_output_event_present present_event = { + /* The DRM backend guarantees that the presentation event will be for + * the last submitted frame. */ + .commit_seq = conn->output.commit_seq, .when = &present_time, .seq = seq, .refresh = mhz_to_nsec(conn->output.refresh), -- cgit v1.2.3