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backend/multi: implement wlr_backend_impl.{test,commit}

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Simon Ser 2022-09-14 11:40:50 +02:00 committed by Kenny Levinsen
parent 78c76ddd09
commit 917c650903
1 changed files with 63 additions and 0 deletions
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63
backend/multi/backend.c
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@ -4,6 +4,7 @@
#include <time.h>
#include <wlr/backend/interface.h>
#include <wlr/types/wlr_buffer.h>
#include <wlr/types/wlr_output.h>
#include <wlr/util/log.h>
#include "backend/backend.h"
#include "backend/multi.h"
@ -97,11 +98,73 @@ static uint32_t multi_backend_get_buffer_caps(struct wlr_backend *backend) {
return caps;
}
static int compare_output_state_backend(const void *data_a, const void *data_b) {
const struct wlr_backend_output_state *a = data_a;
const struct wlr_backend_output_state *b = data_b;
uintptr_t ptr_a = (uintptr_t)a->output->backend;
uintptr_t ptr_b = (uintptr_t)b->output->backend;
if (ptr_a == ptr_b) {
return 0;
} else if (ptr_a < ptr_b) {
return -1;
} else {
return 1;
}
}
static bool commit(struct wlr_backend *backend,
const struct wlr_backend_output_state *states, size_t states_len,
bool test_only) {
// Group states by backend, then perform one commit per backend
struct wlr_backend_output_state *by_backend = malloc(states_len * sizeof(by_backend[0]));
if (by_backend == NULL) {
return false;
}
memcpy(by_backend, states, states_len * sizeof(by_backend[0]));
qsort(by_backend, states_len, sizeof(by_backend[0]), compare_output_state_backend);
bool ok = true;
for (size_t i = 0; i < states_len; i++) {
struct wlr_backend *sub = by_backend[i].output->backend;
size_t j = i;
while (j < states_len && by_backend[j].output->backend == sub) {
j++;
}
if (test_only) {
ok = wlr_backend_test(sub, &by_backend[i], j - i);
} else {
ok = wlr_backend_commit(sub, &by_backend[i], j - i);
}
if (!ok) {
break;
}
}
free(by_backend);
return ok;
}
static bool multi_backend_test(struct wlr_backend *backend,
const struct wlr_backend_output_state *states, size_t states_len) {
return commit(backend, states, states_len, true);
}
static bool multi_backend_commit(struct wlr_backend *backend,
const struct wlr_backend_output_state *states, size_t states_len) {
return commit(backend, states, states_len, false);
}
static const struct wlr_backend_impl backend_impl = {
.start = multi_backend_start,
.destroy = multi_backend_destroy,
.get_drm_fd = multi_backend_get_drm_fd,
.get_buffer_caps = multi_backend_get_buffer_caps,
.test = multi_backend_test,
.commit = multi_backend_commit,
};
static void handle_event_loop_destroy(struct wl_listener *listener, void *data) {