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backend/wayland: report parent presentation clock

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There's no guarantee that the parent Wayland compositor uses
CLOCK_MONOTONIC for reporting presentation timestamps, they could
be using e.g. CLOCK_MONOTONIC_RAW or another system-specific clock.

Forward the value via wlr_backend_impl.get_presentation_clock.

References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3254#note_1143061
This commit is contained in:
Simon Ser 2021-11-22 19:29:30 +01:00
parent 3d73b899ff
commit 3b93da70a0
2 changed files with 20 additions and 0 deletions
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include/backend/wayland.h
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@ -40,6 +40,7 @@ struct wlr_wl_backend {
struct zwp_relative_pointer_manager_v1 *zwp_relative_pointer_manager_v1;
struct wl_list seats; // wlr_wl_seat.link
struct zwp_tablet_manager_v2 *tablet_manager;
clockid_t presentation_clock;
struct wlr_drm_format_set shm_formats;
struct wlr_drm_format_set linux_dmabuf_v1_formats;
struct wl_drm *legacy_drm;