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linux-drm-syncobj-v1: add helper to signal on buffer release

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This commit is contained in:
Simon Ser 2024-05-10 16:46:15 +02:00
parent c7035da5e2
commit 850dd7a792
2 changed files with 46 additions and 0 deletions
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9
include/wlr/types/wlr_linux_drm_syncobj_v1.h
View file

@ -43,4 +43,13 @@ struct wlr_linux_drm_syncobj_manager_v1 *wlr_linux_drm_syncobj_manager_v1_create
struct wlr_linux_drm_syncobj_surface_v1_state *wlr_linux_drm_syncobj_v1_get_surface_state(
struct wlr_surface *surface);
/**
* Signal the release point when wlr_buffer.events.release is emitted.
*
* Compositors unwilling to track fine-grained commit release can call this
* helper on surface commit.
*/
bool wlr_linux_drm_syncobj_v1_state_signal_release_with_buffer(
struct wlr_linux_drm_syncobj_surface_v1_state *state, struct wlr_buffer *buffer);
#endif

37
types/wlr_linux_drm_syncobj_v1.c
View file

@ -467,3 +467,40 @@ wlr_linux_drm_syncobj_v1_get_surface_state(struct wlr_surface *wlr_surface) {
}
return &surface->current;
}
struct release_signaller {
struct wlr_drm_syncobj_timeline *timeline;
uint64_t point;
struct wl_listener buffer_release;
};
static void release_signaller_handle_buffer_release(struct wl_listener *listener, void *data) {
struct release_signaller *signaller = wl_container_of(listener, signaller, buffer_release);
if (drmSyncobjTimelineSignal(signaller->timeline->drm_fd, &signaller->timeline->handle,
&signaller->point, 1) != 0) {
wlr_log(WLR_ERROR, "drmSyncobjTimelineSignal() failed");
}
wlr_drm_syncobj_timeline_unref(signaller->timeline);
free(signaller);
}
bool wlr_linux_drm_syncobj_v1_state_signal_release_with_buffer(
struct wlr_linux_drm_syncobj_surface_v1_state *state, struct wlr_buffer *buffer) {
assert(buffer->n_locks > 0);
assert(state->release_timeline != NULL);
struct release_signaller *signaller = calloc(1, sizeof(*signaller));
if (signaller == NULL) {
return false;
}
signaller->timeline = wlr_drm_syncobj_timeline_ref(state->release_timeline);
signaller->point = state->release_point;
signaller->buffer_release.notify = release_signaller_handle_buffer_release;
wl_signal_add(&buffer->events.release, &signaller->buffer_release);
return true;
}