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linux-explicit-synchronization-v1: new protocol implementation

Browse source 
This patch adds support for the
linux-explicit-synchronization-unstable-v1 protocol.

To test, run weston-simple-dmabuf-egl.
This commit is contained in:
Simon Ser 2020-03-15 15:02:04 +01:00
parent 7aff45fa0d
commit 4f5909ca6a
4 changed files with 446 additions and 0 deletions
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80
include/wlr/types/wlr_linux_explicit_synchronization_v1.h Normal file
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/*
* This an unstable interface of wlroots. No guarantees are made regarding the
* future consistency of this API.
*/
#ifndef WLR_USE_UNSTABLE
#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
#endif
#ifndef WLR_TYPES_WLR_LINUX_EXPLICIT_SYNCHRONIZATION_V1_H
#define WLR_TYPES_WLR_LINUX_EXPLICIT_SYNCHRONIZATION_V1_H
#include <wayland-server-core.h>
#include <wlr/util/addon.h>
struct wlr_linux_surface_synchronization_v1_state {
int acquire_fence_fd;
struct wlr_linux_buffer_release_v1 *buffer_release;
};
struct wlr_linux_surface_synchronization_v1 {
struct wl_resource *resource;
struct wlr_surface *surface;
// private state
struct wlr_addon addon;
struct wlr_linux_surface_synchronization_v1_state pending, current;
struct wl_listener surface_commit;
};
struct wlr_linux_buffer_release_v1 {
struct wl_resource *resource;
};
struct wlr_linux_explicit_synchronization_v1 {
struct wl_global *global;
struct {
struct wl_signal destroy;
} events;
// private state
struct wl_listener display_destroy;
};
/**
* Advertise explicit synchronization support to clients.
*
* The compositor must be prepared to handle fences coming from clients and to
* send release fences correctly. In particular, both the renderer and the
* backend need to support explicit synchronization.
*/
struct wlr_linux_explicit_synchronization_v1 *
wlr_linux_explicit_synchronization_v1_create(struct wl_display *display);
/**
* Signal the provided timeline synchronization point when the last submitted
* buffer is ready to be acquired.
*/
bool wlr_linux_explicit_synchronization_v1_signal_surface_timeline(
struct wlr_linux_explicit_synchronization_v1 *explicit_sync,
struct wlr_surface *surface, struct wlr_render_timeline *timeline,
uint64_t dst_point);
/**
* Send a timeline synchronization point to the client which can be used to
* wait for the buffer to be released.
*
* The synchronization point must already be materialized: wait-before-submit
* is not supported.
*/
bool wlr_linux_explicit_synchronization_v1_wait_surface_timeline(
struct wlr_linux_explicit_synchronization_v1 *explicit_sync,
struct wlr_surface *surface, struct wlr_render_timeline *timeline,
uint64_t src_point);
#endif