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backend: automatically create allocator

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Introduce a new backend_get_allocator function that automatically
creates an allocator for the backend if the backend has a renderer.
This commit is contained in:
Simon Ser 2021-04-28 23:39:36 +02:00 committed by Kenny Levinsen
parent bcabe34a2e
commit 4dae12890f
3 changed files with 26 additions and 0 deletions
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19
backend/backend.c
View file

@ -19,6 +19,7 @@
#include <wlr/util/log.h>
#include "backend/backend.h"
#include "backend/multi.h"
#include "render/allocator.h"
#include "util/signal.h"
#if WLR_HAS_X11_BACKEND
@ -36,6 +37,7 @@ void wlr_backend_init(struct wlr_backend *backend,
void wlr_backend_finish(struct wlr_backend *backend) {
wlr_signal_emit_safe(&backend->events.destroy, backend);
wlr_allocator_destroy(backend->allocator);
wlr_renderer_destroy(backend->renderer);
}
@ -116,6 +118,23 @@ uint32_t backend_get_buffer_caps(struct wlr_backend *backend) {
return backend->impl->get_buffer_caps(backend);
}
struct wlr_allocator *backend_get_allocator(struct wlr_backend *backend) {
if (backend->allocator != NULL) {
return backend->allocator;
}
struct wlr_renderer *renderer = wlr_backend_get_renderer(backend);
if (renderer == NULL) {
return NULL;
}
backend->allocator = wlr_allocator_autocreate(backend, renderer);
if (backend->allocator == NULL) {
wlr_log(WLR_ERROR, "Failed to create backend allocator");
}
return backend->allocator;
}
static size_t parse_outputs_env(const char *name) {
const char *outputs_str = getenv(name);
if (outputs_str == NULL) {

6
include/backend/backend.h
View file

@ -10,4 +10,10 @@
*/
uint32_t backend_get_buffer_caps(struct wlr_backend *backend);
/**
* Get the backend's allocator. Automatically creates the allocator if
* necessary.
*/
struct wlr_allocator *backend_get_allocator(struct wlr_backend *backend);
#endif

1
include/wlr/backend.h
View file

@ -29,6 +29,7 @@ struct wlr_backend {
// Private state
struct wlr_renderer *renderer;
struct wlr_allocator *allocator;
};
/**