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render/allocator: introduce wlr_allocator_autocreate

This commit is contained in:
Simon Zeni 2021-04-23 17:06:21 -04:00 committed by Simon Ser
parent 982498fab3
commit 318e3ac92c
2 changed files with 49 additions and 0 deletions
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7
include/render/allocator.h
View File

@ -7,6 +7,8 @@
#include <wlr/render/drm_format_set.h>
struct wlr_allocator;
struct wlr_backend;
struct wlr_renderer;
struct wlr_allocator_interface {
struct wlr_buffer *(*create_buffer)(struct wlr_allocator *alloc,
@ -22,6 +24,11 @@ struct wlr_allocator {
} events;
};
/**
* Creates the adequate wlr_allocator given a backend and a renderer
*/
struct wlr_allocator *wlr_allocator_autocreate(struct wlr_backend *backend,
struct wlr_renderer *renderer);
/**
* Destroy the allocator.
*/

42
render/allocator.c
View File

@ -1,6 +1,15 @@
#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <fcntl.h>
#include <stdlib.h>
#include <wlr/util/log.h>
#include <xf86drm.h>
#include "backend/backend.h"
#include "render/allocator.h"
#include "render/gbm_allocator.h"
#include "render/shm_allocator.h"
#include "render/wlr_renderer.h"
#include "types/wlr_buffer.h"
void wlr_allocator_init(struct wlr_allocator *alloc,
const struct wlr_allocator_interface *impl) {
@ -9,6 +18,39 @@ void wlr_allocator_init(struct wlr_allocator *alloc,
wl_signal_init(&alloc->events.destroy);
}
struct wlr_allocator *wlr_allocator_autocreate(struct wlr_backend *backend,
struct wlr_renderer *renderer) {
uint32_t backend_caps = backend_get_buffer_caps(backend);
uint32_t renderer_caps = renderer_get_render_buffer_caps(renderer);
int drm_fd = wlr_backend_get_drm_fd(backend);
struct wlr_allocator *alloc = NULL;
uint32_t gbm_caps = WLR_BUFFER_CAP_DMABUF;
if ((backend_caps & gbm_caps) && (renderer_caps & gbm_caps)
&& drm_fd != -1) {
wlr_log(WLR_DEBUG, "Trying to create gbm allocator");
int fd = fcntl(drm_fd, F_DUPFD_CLOEXEC, 0);
if (fd < 0) {
wlr_log(WLR_ERROR, "fcntl(F_DUPFD_CLOEXEC) failed");
} else if ((alloc = wlr_gbm_allocator_create(fd)) != NULL) {
return alloc;
}
wlr_log(WLR_DEBUG, "Failed to create gbm allocator");
}
uint32_t shm_caps = WLR_BUFFER_CAP_SHM | WLR_BUFFER_CAP_DATA_PTR;
if ((backend_caps & shm_caps) && (renderer_caps & shm_caps)) {
wlr_log(WLR_DEBUG, "Trying to create shm allocator");
if ((alloc = wlr_shm_allocator_create()) != NULL) {
return alloc;
}
wlr_log(WLR_DEBUG, "Failed to create shm allocator");
}
wlr_log(WLR_ERROR, "Failed to create allocator");
return NULL;
}
void wlr_allocator_destroy(struct wlr_allocator *alloc) {
if (alloc == NULL) {
return;