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presentation-time: add separate helper for zero-copy

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The backend is not able to tell whether a surface is being
presented via direct scan-out or not. The backend will set
ZERO_COPY if the buffer submitted via the output commit was
presented in a zero-copy fashion, but will no know whether the
buffer comes from the compositor or the client.
This commit is contained in:
Simon Ser 2023-04-14 20:41:27 +02:00
parent fe84bfc8d9
commit 67447d6cb4
3 changed files with 48 additions and 14 deletions
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20
include/wlr/types/wlr_presentation_time.h
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@ -33,11 +33,12 @@ struct wlr_presentation {
struct wlr_presentation_feedback {
struct wl_list resources; // wl_resource_get_link()
// Only when the wlr_presentation_surface_sampled_on_output() helper has
// been called.
// Only when the wlr_presentation_surface_textured_on_output() or
// wlr_presentation_surface_scanned_out_on_output() helper has been called.
struct wlr_output *output;
bool output_committed;
uint32_t output_commit_seq;
bool zero_copy;
struct wl_listener output_commit;
struct wl_listener output_present;
@ -85,14 +86,23 @@ 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.
* Mark the current surface's buffer as textured on the given output.
*
* Instead of calling wlr_presentation_surface_sampled() and managing the
* struct 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.
* contents have been copied to a buffer which will be displayed on the output.
*/
void wlr_presentation_surface_sampled_on_output(
void wlr_presentation_surface_textured_on_output(
struct wlr_presentation *presentation, struct wlr_surface *surface,
struct wlr_output *output);
/**
* Mark the current surface's buffer as scanned out on the given output.
*
* Same as wlr_presentation_surface_textured_on_output(), but indicates direct
* scan-out.
*/
void wlr_presentation_surface_scanned_out_on_output(
struct wlr_presentation *presentation, struct wlr_surface *surface,
struct wlr_output *output);