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backend/multi: implement get_buffer_caps

This commit is contained in:
Simon Zeni 2021-10-22 16:14:37 -04:00 committed by Simon Ser
parent 7c10a77e0a
commit 70e8277175
1 changed files with 25 additions and 0 deletions
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25
backend/multi/backend.c
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@ -5,7 +5,9 @@
#include <time.h>
#include <wlr/backend/interface.h>
#include <wlr/backend/session.h>
#include <wlr/types/wlr_buffer.h>
#include <wlr/util/log.h>
#include "backend/backend.h"
#include "backend/multi.h"
#include "util/signal.h"
@ -109,6 +111,28 @@ static int multi_backend_get_drm_fd(struct wlr_backend *backend) {
return -1;
}
static uint32_t multi_backend_get_buffer_caps(struct wlr_backend *backend) {
struct wlr_multi_backend *multi = multi_backend_from_backend(backend);
if (wl_list_empty(&multi->backends)) {
return 0;
}
uint32_t caps = WLR_BUFFER_CAP_DATA_PTR | WLR_BUFFER_CAP_DMABUF
| WLR_BUFFER_CAP_SHM;
struct subbackend_state *sub;
wl_list_for_each(sub, &multi->backends, link) {
uint32_t backend_caps = backend_get_buffer_caps(sub->backend);
if (backend_caps != 0) {
// only count backend capable of presenting a buffer
caps = caps & backend_caps;
}
}
return caps;
}
static const struct wlr_backend_impl backend_impl = {
.start = multi_backend_start,
.destroy = multi_backend_destroy,
@ -116,6 +140,7 @@ static const struct wlr_backend_impl backend_impl = {
.get_session = multi_backend_get_session,
.get_presentation_clock = multi_backend_get_presentation_clock,
.get_drm_fd = multi_backend_get_drm_fd,
.get_buffer_caps = multi_backend_get_buffer_caps,
};
static void handle_display_destroy(struct wl_listener *listener, void *data) {