mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-12-28 20:39:50 +01:00
275 lines
7.3 KiB
C
275 lines
7.3 KiB
C
#define _POSIX_C_SOURCE 200809L
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <libinput.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <wayland-server.h>
|
|
#include <wlr/backend/drm.h>
|
|
#include <wlr/backend/headless.h>
|
|
#include <wlr/backend/interface.h>
|
|
#include <wlr/backend/libinput.h>
|
|
#include <wlr/backend/multi.h>
|
|
#include <wlr/backend/session.h>
|
|
#include <wlr/backend/wayland.h>
|
|
#include <wlr/config.h>
|
|
#include <wlr/util/log.h>
|
|
|
|
/* WLR_HAS_X11_BACKEND needs to be after wlr/config.h */
|
|
#ifdef WLR_HAS_X11_BACKEND
|
|
#include <wlr/backend/x11.h>
|
|
#endif
|
|
|
|
void wlr_backend_init(struct wlr_backend *backend,
|
|
const struct wlr_backend_impl *impl) {
|
|
assert(backend);
|
|
backend->impl = impl;
|
|
wl_signal_init(&backend->events.destroy);
|
|
wl_signal_init(&backend->events.new_input);
|
|
wl_signal_init(&backend->events.new_output);
|
|
}
|
|
|
|
bool wlr_backend_start(struct wlr_backend *backend) {
|
|
if (backend->impl->start) {
|
|
return backend->impl->start(backend);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void wlr_backend_destroy(struct wlr_backend *backend) {
|
|
if (!backend) {
|
|
return;
|
|
}
|
|
|
|
if (backend->impl && backend->impl->destroy) {
|
|
backend->impl->destroy(backend);
|
|
} else {
|
|
free(backend);
|
|
}
|
|
}
|
|
|
|
struct wlr_renderer *wlr_backend_get_renderer(struct wlr_backend *backend) {
|
|
if (backend->impl->get_renderer) {
|
|
return backend->impl->get_renderer(backend);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static size_t parse_outputs_env(const char *name) {
|
|
const char *outputs_str = getenv(name);
|
|
if (outputs_str == NULL) {
|
|
return 1;
|
|
}
|
|
|
|
char *end;
|
|
int outputs = (int)strtol(outputs_str, &end, 10);
|
|
if (*end || outputs < 0) {
|
|
wlr_log(WLR_ERROR, "%s specified with invalid integer, ignoring", name);
|
|
return 1;
|
|
}
|
|
|
|
return outputs;
|
|
}
|
|
|
|
static struct wlr_backend *attempt_wl_backend(struct wl_display *display,
|
|
wlr_renderer_create_func_t create_renderer_func) {
|
|
struct wlr_backend *backend = wlr_wl_backend_create(display, NULL, create_renderer_func);
|
|
if (backend == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
size_t outputs = parse_outputs_env("WLR_WL_OUTPUTS");
|
|
for (size_t i = 0; i < outputs; ++i) {
|
|
wlr_wl_output_create(backend);
|
|
}
|
|
|
|
return backend;
|
|
}
|
|
|
|
#ifdef WLR_HAS_X11_BACKEND
|
|
static struct wlr_backend *attempt_x11_backend(struct wl_display *display,
|
|
const char *x11_display, wlr_renderer_create_func_t create_renderer_func) {
|
|
struct wlr_backend *backend = wlr_x11_backend_create(display, x11_display, create_renderer_func);
|
|
if (backend == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
size_t outputs = parse_outputs_env("WLR_X11_OUTPUTS");
|
|
for (size_t i = 0; i < outputs; ++i) {
|
|
wlr_x11_output_create(backend);
|
|
}
|
|
|
|
return backend;
|
|
}
|
|
#endif
|
|
|
|
static struct wlr_backend *attempt_headless_backend(
|
|
struct wl_display *display, wlr_renderer_create_func_t create_renderer_func) {
|
|
struct wlr_backend *backend = wlr_headless_backend_create(display, create_renderer_func);
|
|
if (backend == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
size_t outputs = parse_outputs_env("WLR_HEADLESS_OUTPUTS");
|
|
for (size_t i = 0; i < outputs; ++i) {
|
|
wlr_headless_add_output(backend, 1280, 720);
|
|
}
|
|
|
|
return backend;
|
|
}
|
|
|
|
static struct wlr_backend *attempt_drm_backend(struct wl_display *display,
|
|
struct wlr_backend *backend, struct wlr_session *session,
|
|
wlr_renderer_create_func_t create_renderer_func) {
|
|
int gpus[8];
|
|
size_t num_gpus = wlr_session_find_gpus(session, 8, gpus);
|
|
struct wlr_backend *primary_drm = NULL;
|
|
wlr_log(WLR_INFO, "Found %zu GPUs", num_gpus);
|
|
|
|
for (size_t i = 0; i < num_gpus; ++i) {
|
|
struct wlr_backend *drm = wlr_drm_backend_create(display, session,
|
|
gpus[i], primary_drm, create_renderer_func);
|
|
if (!drm) {
|
|
wlr_log(WLR_ERROR, "Failed to open DRM device %d", gpus[i]);
|
|
continue;
|
|
}
|
|
|
|
if (!primary_drm) {
|
|
primary_drm = drm;
|
|
}
|
|
|
|
wlr_multi_backend_add(backend, drm);
|
|
}
|
|
|
|
return primary_drm;
|
|
}
|
|
|
|
static struct wlr_backend *attempt_backend_by_name(struct wl_display *display,
|
|
struct wlr_backend *backend, struct wlr_session **session,
|
|
const char *name, wlr_renderer_create_func_t create_renderer_func) {
|
|
if (strcmp(name, "wayland") == 0) {
|
|
return attempt_wl_backend(display, create_renderer_func);
|
|
#ifdef WLR_HAS_X11_BACKEND
|
|
} else if (strcmp(name, "x11") == 0) {
|
|
return attempt_x11_backend(display, NULL, create_renderer_func);
|
|
#endif
|
|
} else if (strcmp(name, "headless") == 0) {
|
|
return attempt_headless_backend(display, create_renderer_func);
|
|
} else if (strcmp(name, "drm") == 0 || strcmp(name, "libinput") == 0) {
|
|
// DRM and libinput need a session
|
|
*session = wlr_session_create(display);
|
|
if (!*session) {
|
|
wlr_log(WLR_ERROR, "failed to start a session");
|
|
return NULL;
|
|
}
|
|
|
|
if (strcmp(name, "libinput") == 0) {
|
|
return wlr_libinput_backend_create(display, *session);
|
|
} else {
|
|
return attempt_drm_backend(display, backend, *session, create_renderer_func);
|
|
}
|
|
}
|
|
|
|
wlr_log(WLR_ERROR, "unrecognized backend '%s'", name);
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
|
|
wlr_renderer_create_func_t create_renderer_func) {
|
|
struct wlr_backend *backend = wlr_multi_backend_create(display);
|
|
if (!backend) {
|
|
wlr_log(WLR_ERROR, "could not allocate multibackend");
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_session *session = NULL;
|
|
|
|
char *names = getenv("WLR_BACKENDS");
|
|
if (names) {
|
|
names = strdup(names);
|
|
if (names == NULL) {
|
|
wlr_log(WLR_ERROR, "allocation failed");
|
|
wlr_backend_destroy(backend);
|
|
return NULL;
|
|
}
|
|
|
|
char *saveptr;
|
|
char *name = strtok_r(names, ",", &saveptr);
|
|
while (name != NULL) {
|
|
struct wlr_backend *subbackend =
|
|
attempt_backend_by_name(display, backend, &session, name, create_renderer_func);
|
|
if (subbackend == NULL) {
|
|
wlr_log(WLR_ERROR, "failed to start backend '%s'", name);
|
|
wlr_backend_destroy(backend);
|
|
wlr_session_destroy(session);
|
|
free(names);
|
|
return NULL;
|
|
}
|
|
|
|
if (!wlr_multi_backend_add(backend, subbackend)) {
|
|
wlr_log(WLR_ERROR, "failed to add backend '%s'", name);
|
|
wlr_backend_destroy(backend);
|
|
wlr_session_destroy(session);
|
|
free(names);
|
|
return NULL;
|
|
}
|
|
|
|
name = strtok_r(NULL, ",", &saveptr);
|
|
}
|
|
|
|
free(names);
|
|
return backend;
|
|
}
|
|
|
|
if (getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY") ||
|
|
getenv("WAYLAND_SOCKET")) {
|
|
struct wlr_backend *wl_backend = attempt_wl_backend(display,
|
|
create_renderer_func);
|
|
if (wl_backend) {
|
|
wlr_multi_backend_add(backend, wl_backend);
|
|
return backend;
|
|
}
|
|
}
|
|
|
|
#ifdef WLR_HAS_X11_BACKEND
|
|
const char *x11_display = getenv("DISPLAY");
|
|
if (x11_display) {
|
|
struct wlr_backend *x11_backend =
|
|
attempt_x11_backend(display, x11_display, create_renderer_func);
|
|
if (x11_backend) {
|
|
wlr_multi_backend_add(backend, x11_backend);
|
|
return backend;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Attempt DRM+libinput
|
|
session = wlr_session_create(display);
|
|
if (!session) {
|
|
wlr_log(WLR_ERROR, "Failed to start a DRM session");
|
|
wlr_backend_destroy(backend);
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_backend *libinput = wlr_libinput_backend_create(display, session);
|
|
if (!libinput) {
|
|
wlr_log(WLR_ERROR, "Failed to start libinput backend");
|
|
wlr_backend_destroy(backend);
|
|
wlr_session_destroy(session);
|
|
return NULL;
|
|
}
|
|
wlr_multi_backend_add(backend, libinput);
|
|
|
|
struct wlr_backend *primary_drm =
|
|
attempt_drm_backend(display, backend, session, create_renderer_func);
|
|
if (!primary_drm) {
|
|
wlr_log(WLR_ERROR, "Failed to open any DRM device");
|
|
wlr_backend_destroy(libinput);
|
|
wlr_backend_destroy(backend);
|
|
wlr_session_destroy(session);
|
|
return NULL;
|
|
}
|
|
|
|
return backend;
|
|
}
|