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presentation-time: add helper for common case

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Most of the time, compositors just display the surface's current buffer
on an output. Add an helper to make it easy to support presentation-time
in this case.
This commit is contained in:
Simon Ser 2019-11-17 00:20:26 +01:00 • committed by Drew DeVault
parent 533ea6d7ef
commit 2122e49bea
2 changed files with 111 additions and 0 deletions
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30
include/wlr/types/wlr_presentation_time.h
View file

@ -14,6 +14,9 @@
#include <time.h>
#include <wayland-server-core.h>
struct wlr_output;
struct wlr_output_event_present;
struct wlr_presentation {
struct wl_global *global;
struct wl_list resources; // wl_resource_get_link
@ -42,8 +45,17 @@ struct wlr_presentation_feedback {
bool sampled;
bool presented;
// Only when the wlr_presentation_surface_sampled_on_output helper has been
// called
struct wlr_output *output;
bool output_committed;
uint32_t output_commit_seq;
struct wl_listener surface_commit;
struct wl_listener surface_destroy;
struct wl_listener output_commit;
struct wl_listener output_present;
struct wl_listener output_destroy;
};
struct wlr_presentation_event {
@ -81,4 +93,22 @@ void wlr_presentation_feedback_send_presented(
void wlr_presentation_feedback_destroy(
struct wlr_presentation_feedback *feedback);
/**
* Fill a wlr_presentation_event from a wlr_output_event_present.
*/
void wlr_presentation_event_from_output(struct wlr_presentation_event *event,
const struct wlr_output_event_present *output_event);
/**
* Mark the current surface's buffer as sampled on the given output.
*
* Instead of calling wlr_presentation_surface_sampled and managing the
* wlr_presentation_feedback itself, the compositor can call this function
* before a wlr_output_commit call to indicate that the surface's current
* contents will be displayed on the output.
*/
void wlr_presentation_surface_sampled_on_output(
struct wlr_presentation *presentation, struct wlr_surface *surface,
struct wlr_output *output);
#endif