presentation-time: make API more flexible
The wlr_presentation_feedback struct now tracks presentation feedback for multiple resources (but still a single surface content update). This allows the compositor to properly send presentation events even when there is more than one frame of latency or when it references a surface's buffer.
This commit is contained in:
parent
3084cee7bc
commit
533ea6d7ef
|
@ -28,17 +28,19 @@ struct wlr_presentation {
|
|||
};
|
||||
|
||||
struct wlr_presentation_feedback {
|
||||
struct wl_resource *resource;
|
||||
struct wlr_presentation *presentation;
|
||||
struct wlr_surface *surface;
|
||||
struct wlr_surface *surface; // NULL if the surface has been destroyed
|
||||
struct wl_list link; // wlr_presentation::feedbacks
|
||||
|
||||
struct wl_list resources; // wl_resource_get_link
|
||||
|
||||
// The surface contents were committed.
|
||||
bool committed;
|
||||
// The surface contents were sampled by the compositor and are to be
|
||||
// presented on the next flip. Can become true only after committed becomes
|
||||
// true.
|
||||
bool sampled;
|
||||
bool presented;
|
||||
|
||||
struct wl_listener surface_commit;
|
||||
struct wl_listener surface_destroy;
|
||||
|
@ -58,10 +60,25 @@ struct wlr_backend;
|
|||
struct wlr_presentation *wlr_presentation_create(struct wl_display *display,
|
||||
struct wlr_backend *backend);
|
||||
void wlr_presentation_destroy(struct wlr_presentation *presentation);
|
||||
void wlr_presentation_send_surface_presented(
|
||||
struct wlr_presentation *presentation, struct wlr_surface *surface,
|
||||
struct wlr_presentation_event *event);
|
||||
void wlr_presentation_surface_sampled(
|
||||
/**
|
||||
* Mark the current surface's buffer as sampled.
|
||||
*
|
||||
* The compositor must call this function when it uses the surface's current
|
||||
* contents (e.g. when rendering the surface's current texture, when
|
||||
* referencing its current buffer, or when directly scanning out its current
|
||||
* buffer). A wlr_presentation_feedback is returned. The compositor should call
|
||||
* wlr_presentation_feedback_send_presented if this content has been displayed,
|
||||
* then wlr_presentation_feedback_destroy.
|
||||
*
|
||||
* NULL is returned if the client hasn't requested presentation feedback for
|
||||
* this surface.
|
||||
*/
|
||||
struct wlr_presentation_feedback *wlr_presentation_surface_sampled(
|
||||
struct wlr_presentation *presentation, struct wlr_surface *surface);
|
||||
void wlr_presentation_feedback_send_presented(
|
||||
struct wlr_presentation_feedback *feedback,
|
||||
struct wlr_presentation_event *event);
|
||||
void wlr_presentation_feedback_destroy(
|
||||
struct wlr_presentation_feedback *feedback);
|
||||
|
||||
#endif
|
||||
|
|
|
@ -9,31 +9,19 @@
|
|||
|
||||
#define PRESENTATION_VERSION 1
|
||||
|
||||
static struct wlr_presentation_feedback *presentation_feedback_from_resource(
|
||||
struct wl_resource *resource) {
|
||||
assert(wl_resource_instance_of(resource,
|
||||
&wp_presentation_feedback_interface, NULL));
|
||||
return wl_resource_get_user_data(resource);
|
||||
}
|
||||
|
||||
static void feedback_handle_resource_destroy(struct wl_resource *resource) {
|
||||
struct wlr_presentation_feedback *feedback =
|
||||
presentation_feedback_from_resource(resource);
|
||||
wl_list_remove(&feedback->surface_commit.link);
|
||||
wl_list_remove(&feedback->surface_destroy.link);
|
||||
wl_list_remove(&feedback->link);
|
||||
free(feedback);
|
||||
wl_list_remove(wl_resource_get_link(resource));
|
||||
}
|
||||
|
||||
// Destroys the feedback
|
||||
static void feedback_send_presented(struct wlr_presentation_feedback *feedback,
|
||||
static void feedback_resource_send_presented(
|
||||
struct wl_resource *feedback_resource,
|
||||
struct wlr_presentation_event *event) {
|
||||
struct wl_client *client = wl_resource_get_client(feedback->resource);
|
||||
struct wl_resource *resource;
|
||||
wl_resource_for_each(resource, &event->output->resources) {
|
||||
if (wl_resource_get_client(resource) == client) {
|
||||
wp_presentation_feedback_send_sync_output(feedback->resource,
|
||||
resource);
|
||||
struct wl_client *client = wl_resource_get_client(feedback_resource);
|
||||
struct wl_resource *output_resource;
|
||||
wl_resource_for_each(output_resource, &event->output->resources) {
|
||||
if (wl_resource_get_client(output_resource) == client) {
|
||||
wp_presentation_feedback_send_sync_output(feedback_resource,
|
||||
output_resource);
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -41,18 +29,17 @@ static void feedback_send_presented(struct wlr_presentation_feedback *feedback,
|
|||
uint32_t tv_sec_lo = event->tv_sec & 0xFFFFFFFF;
|
||||
uint32_t seq_hi = event->seq >> 32;
|
||||
uint32_t seq_lo = event->seq & 0xFFFFFFFF;
|
||||
wp_presentation_feedback_send_presented(feedback->resource,
|
||||
wp_presentation_feedback_send_presented(feedback_resource,
|
||||
tv_sec_hi, tv_sec_lo, event->tv_nsec, event->refresh,
|
||||
seq_hi, seq_lo, event->flags);
|
||||
|
||||
wl_resource_destroy(feedback->resource);
|
||||
wl_resource_destroy(feedback_resource);
|
||||
}
|
||||
|
||||
// Destroys the feedback
|
||||
static void feedback_send_discarded(
|
||||
struct wlr_presentation_feedback *feedback) {
|
||||
wp_presentation_feedback_send_discarded(feedback->resource);
|
||||
wl_resource_destroy(feedback->resource);
|
||||
static void feedback_resource_send_discarded(
|
||||
struct wl_resource *feedback_resource) {
|
||||
wp_presentation_feedback_send_discarded(feedback_resource);
|
||||
wl_resource_destroy(feedback_resource);
|
||||
}
|
||||
|
||||
static void feedback_handle_surface_commit(struct wl_listener *listener,
|
||||
|
@ -63,18 +50,33 @@ static void feedback_handle_surface_commit(struct wl_listener *listener,
|
|||
if (feedback->committed) {
|
||||
if (!feedback->sampled) {
|
||||
// The content update has been superseded
|
||||
feedback_send_discarded(feedback);
|
||||
wlr_presentation_feedback_destroy(feedback);
|
||||
}
|
||||
} else {
|
||||
feedback->committed = true;
|
||||
}
|
||||
}
|
||||
|
||||
static void feedback_unset_surface(struct wlr_presentation_feedback *feedback) {
|
||||
if (feedback->surface == NULL) {
|
||||
return;
|
||||
}
|
||||
|
||||
feedback->surface = NULL;
|
||||
wl_list_remove(&feedback->surface_commit.link);
|
||||
wl_list_remove(&feedback->surface_destroy.link);
|
||||
}
|
||||
|
||||
static void feedback_handle_surface_destroy(struct wl_listener *listener,
|
||||
void *data) {
|
||||
struct wlr_presentation_feedback *feedback =
|
||||
wl_container_of(listener, feedback, surface_destroy);
|
||||
feedback_send_discarded(feedback);
|
||||
if (feedback->sampled) {
|
||||
// The compositor might have a handle on this feedback
|
||||
feedback_unset_surface(feedback);
|
||||
} else {
|
||||
wlr_presentation_feedback_destroy(feedback);
|
||||
}
|
||||
}
|
||||
|
||||
static const struct wp_presentation_interface presentation_impl;
|
||||
|
@ -87,39 +89,50 @@ static struct wlr_presentation *presentation_from_resource(
|
|||
}
|
||||
|
||||
static void presentation_handle_feedback(struct wl_client *client,
|
||||
struct wl_resource *resource, struct wl_resource *surface_resource,
|
||||
uint32_t id) {
|
||||
struct wl_resource *presentation_resource,
|
||||
struct wl_resource *surface_resource, uint32_t id) {
|
||||
struct wlr_presentation *presentation =
|
||||
presentation_from_resource(resource);
|
||||
presentation_from_resource(presentation_resource);
|
||||
struct wlr_surface *surface = wlr_surface_from_resource(surface_resource);
|
||||
|
||||
struct wlr_presentation_feedback *feedback =
|
||||
calloc(1, sizeof(struct wlr_presentation_feedback));
|
||||
if (feedback == NULL) {
|
||||
wl_client_post_no_memory(client);
|
||||
return;
|
||||
bool found = false;
|
||||
struct wlr_presentation_feedback *feedback;
|
||||
wl_list_for_each(feedback, &presentation->feedbacks, link) {
|
||||
if (feedback->surface == surface && !feedback->committed) {
|
||||
found = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!found) {
|
||||
feedback = calloc(1, sizeof(struct wlr_presentation_feedback));
|
||||
if (feedback == NULL) {
|
||||
wl_client_post_no_memory(client);
|
||||
return;
|
||||
}
|
||||
|
||||
feedback->surface = surface;
|
||||
wl_list_init(&feedback->resources);
|
||||
|
||||
feedback->surface_commit.notify = feedback_handle_surface_commit;
|
||||
wl_signal_add(&surface->events.commit, &feedback->surface_commit);
|
||||
|
||||
feedback->surface_destroy.notify = feedback_handle_surface_destroy;
|
||||
wl_signal_add(&surface->events.destroy, &feedback->surface_destroy);
|
||||
|
||||
wl_list_insert(&presentation->feedbacks, &feedback->link);
|
||||
}
|
||||
|
||||
uint32_t version = wl_resource_get_version(resource);
|
||||
feedback->resource = wl_resource_create(client,
|
||||
uint32_t version = wl_resource_get_version(presentation_resource);
|
||||
struct wl_resource *resource = wl_resource_create(client,
|
||||
&wp_presentation_feedback_interface, version, id);
|
||||
if (feedback->resource == NULL) {
|
||||
free(feedback);
|
||||
if (resource == NULL) {
|
||||
wl_client_post_no_memory(client);
|
||||
return;
|
||||
}
|
||||
wl_resource_set_implementation(feedback->resource, NULL, feedback,
|
||||
wl_resource_set_implementation(resource, NULL, feedback,
|
||||
feedback_handle_resource_destroy);
|
||||
|
||||
feedback->surface = surface;
|
||||
|
||||
feedback->surface_commit.notify = feedback_handle_surface_commit;
|
||||
wl_signal_add(&surface->events.commit, &feedback->surface_commit);
|
||||
|
||||
feedback->surface_destroy.notify = feedback_handle_surface_destroy;
|
||||
wl_signal_add(&surface->events.destroy, &feedback->surface_destroy);
|
||||
|
||||
wl_list_insert(&presentation->feedbacks, &feedback->link);
|
||||
wl_list_insert(&feedback->resources, wl_resource_get_link(resource));
|
||||
}
|
||||
|
||||
static void presentation_handle_destroy(struct wl_client *client,
|
||||
|
@ -198,7 +211,7 @@ void wlr_presentation_destroy(struct wlr_presentation *presentation) {
|
|||
struct wlr_presentation_feedback *feedback, *feedback_tmp;
|
||||
wl_list_for_each_safe(feedback, feedback_tmp, &presentation->feedbacks,
|
||||
link) {
|
||||
wl_resource_destroy(feedback->resource);
|
||||
wlr_presentation_feedback_destroy(feedback);
|
||||
}
|
||||
|
||||
struct wl_resource *resource, *resource_tmp;
|
||||
|
@ -211,27 +224,47 @@ void wlr_presentation_destroy(struct wlr_presentation *presentation) {
|
|||
free(presentation);
|
||||
}
|
||||
|
||||
void wlr_presentation_send_surface_presented(
|
||||
struct wlr_presentation *presentation, struct wlr_surface *surface,
|
||||
void wlr_presentation_feedback_send_presented(
|
||||
struct wlr_presentation_feedback *feedback,
|
||||
struct wlr_presentation_event *event) {
|
||||
// TODO: maybe use a hashtable to optimize this function
|
||||
struct wlr_presentation_feedback *feedback, *feedback_tmp;
|
||||
wl_list_for_each_safe(feedback, feedback_tmp,
|
||||
&presentation->feedbacks, link) {
|
||||
if (feedback->surface == surface && feedback->sampled) {
|
||||
feedback_send_presented(feedback, event);
|
||||
}
|
||||
struct wl_resource *resource, *tmp;
|
||||
wl_resource_for_each_safe(resource, tmp, &feedback->resources) {
|
||||
feedback_resource_send_presented(resource, event);
|
||||
}
|
||||
|
||||
feedback->presented = true;
|
||||
}
|
||||
|
||||
void wlr_presentation_surface_sampled(
|
||||
struct wlr_presentation_feedback *wlr_presentation_surface_sampled(
|
||||
struct wlr_presentation *presentation, struct wlr_surface *surface) {
|
||||
// TODO: maybe use a hashtable to optimize this function
|
||||
struct wlr_presentation_feedback *feedback, *feedback_tmp;
|
||||
wl_list_for_each_safe(feedback, feedback_tmp,
|
||||
&presentation->feedbacks, link) {
|
||||
if (feedback->surface == surface && feedback->committed) {
|
||||
if (feedback->surface == surface && feedback->committed &&
|
||||
!feedback->sampled) {
|
||||
feedback->sampled = true;
|
||||
return feedback;
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void wlr_presentation_feedback_destroy(
|
||||
struct wlr_presentation_feedback *feedback) {
|
||||
if (feedback == NULL) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (!feedback->presented) {
|
||||
struct wl_resource *resource, *tmp;
|
||||
wl_resource_for_each_safe(resource, tmp, &feedback->resources) {
|
||||
feedback_resource_send_discarded(resource);
|
||||
}
|
||||
}
|
||||
assert(wl_list_empty(&feedback->resources));
|
||||
|
||||
feedback_unset_surface(feedback);
|
||||
wl_list_remove(&feedback->link);
|
||||
free(feedback);
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue