mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-12-23 02:19:49 +01:00
407 lines
9.8 KiB
C
407 lines
9.8 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-core.h>
|
|
|
|
#include <wlr/backend/headless.h>
|
|
#include <wlr/backend/interface.h>
|
|
#include <wlr/backend/multi.h>
|
|
#include <wlr/backend/noop.h>
|
|
#include <wlr/backend/session.h>
|
|
#include <wlr/backend/wayland.h>
|
|
#include <wlr/config.h>
|
|
#include <wlr/render/wlr_renderer.h>
|
|
#include <wlr/util/log.h>
|
|
#include "backend/backend.h"
|
|
#include "backend/multi.h"
|
|
#include "render/allocator.h"
|
|
#include "util/signal.h"
|
|
|
|
#if WLR_HAS_DRM_BACKEND
|
|
#include <wlr/backend/drm.h>
|
|
#endif
|
|
|
|
#if WLR_HAS_LIBINPUT_BACKEND
|
|
#include <wlr/backend/libinput.h>
|
|
#endif
|
|
|
|
#if 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);
|
|
}
|
|
|
|
void wlr_backend_finish(struct wlr_backend *backend) {
|
|
wlr_signal_emit_safe(&backend->events.destroy, backend);
|
|
wlr_allocator_destroy(backend->allocator);
|
|
if (backend->has_own_renderer) {
|
|
wlr_renderer_destroy(backend->renderer);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
static bool backend_create_renderer(struct wlr_backend *backend) {
|
|
if (backend->renderer != NULL) {
|
|
return true;
|
|
}
|
|
|
|
backend->renderer = wlr_renderer_autocreate(backend);
|
|
if (backend->renderer == NULL) {
|
|
return false;
|
|
}
|
|
|
|
backend->has_own_renderer = true;
|
|
return true;
|
|
}
|
|
|
|
struct wlr_renderer *wlr_backend_get_renderer(struct wlr_backend *backend) {
|
|
if (backend->impl->get_renderer) {
|
|
return backend->impl->get_renderer(backend);
|
|
}
|
|
if (backend_get_buffer_caps(backend) != 0) {
|
|
// If the backend is capable of presenting buffers, automatically create
|
|
// the renderer if necessary.
|
|
if (!backend_create_renderer(backend)) {
|
|
wlr_log(WLR_ERROR, "Failed to create backend renderer");
|
|
return NULL;
|
|
}
|
|
return backend->renderer;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_session *wlr_backend_get_session(struct wlr_backend *backend) {
|
|
if (backend->impl->get_session) {
|
|
return backend->impl->get_session(backend);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
clockid_t wlr_backend_get_presentation_clock(struct wlr_backend *backend) {
|
|
if (backend->impl->get_presentation_clock) {
|
|
return backend->impl->get_presentation_clock(backend);
|
|
}
|
|
return CLOCK_MONOTONIC;
|
|
}
|
|
|
|
int wlr_backend_get_drm_fd(struct wlr_backend *backend) {
|
|
if (!backend->impl->get_drm_fd) {
|
|
return -1;
|
|
}
|
|
return backend->impl->get_drm_fd(backend);
|
|
}
|
|
|
|
uint32_t backend_get_buffer_caps(struct wlr_backend *backend) {
|
|
if (!backend->impl->get_buffer_caps) {
|
|
return 0;
|
|
}
|
|
|
|
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) {
|
|
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) {
|
|
struct wlr_backend *backend = wlr_wl_backend_create(display, NULL);
|
|
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;
|
|
}
|
|
|
|
#if WLR_HAS_X11_BACKEND
|
|
static struct wlr_backend *attempt_x11_backend(struct wl_display *display,
|
|
const char *x11_display) {
|
|
struct wlr_backend *backend = wlr_x11_backend_create(display, x11_display);
|
|
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) {
|
|
struct wlr_backend *backend = wlr_headless_backend_create(display);
|
|
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_noop_backend(struct wl_display *display) {
|
|
struct wlr_backend *backend = wlr_noop_backend_create(display);
|
|
if (backend == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
size_t outputs = parse_outputs_env("WLR_NOOP_OUTPUTS");
|
|
for (size_t i = 0; i < outputs; ++i) {
|
|
wlr_noop_add_output(backend);
|
|
}
|
|
|
|
return backend;
|
|
}
|
|
|
|
#if WLR_HAS_DRM_BACKEND
|
|
static struct wlr_backend *attempt_drm_backend(struct wl_display *display,
|
|
struct wlr_backend *backend, struct wlr_session *session) {
|
|
struct wlr_device *gpus[8];
|
|
ssize_t num_gpus = wlr_session_find_gpus(session, 8, gpus);
|
|
if (num_gpus < 0) {
|
|
wlr_log(WLR_ERROR, "Failed to find GPUs");
|
|
return NULL;
|
|
}
|
|
|
|
wlr_log(WLR_INFO, "Found %zu GPUs", num_gpus);
|
|
|
|
struct wlr_backend *primary_drm = NULL;
|
|
for (size_t i = 0; i < (size_t)num_gpus; ++i) {
|
|
struct wlr_backend *drm = wlr_drm_backend_create(display, session,
|
|
gpus[i], primary_drm);
|
|
if (!drm) {
|
|
wlr_log(WLR_ERROR, "Failed to create DRM backend");
|
|
continue;
|
|
}
|
|
|
|
if (!primary_drm) {
|
|
primary_drm = drm;
|
|
}
|
|
|
|
wlr_multi_backend_add(backend, drm);
|
|
}
|
|
|
|
return primary_drm;
|
|
}
|
|
#endif
|
|
|
|
static struct wlr_backend *attempt_backend_by_name(struct wl_display *display,
|
|
struct wlr_backend *backend, struct wlr_session **session,
|
|
const char *name) {
|
|
if (strcmp(name, "wayland") == 0) {
|
|
return attempt_wl_backend(display);
|
|
#if WLR_HAS_X11_BACKEND
|
|
} else if (strcmp(name, "x11") == 0) {
|
|
return attempt_x11_backend(display, NULL);
|
|
#endif
|
|
} else if (strcmp(name, "headless") == 0) {
|
|
return attempt_headless_backend(display);
|
|
} else if (strcmp(name, "noop") == 0) {
|
|
return attempt_noop_backend(display);
|
|
} else if (strcmp(name, "drm") == 0 || strcmp(name, "libinput") == 0) {
|
|
// DRM and libinput need a session
|
|
if (!*session) {
|
|
*session = wlr_session_create(display);
|
|
if (!*session) {
|
|
wlr_log(WLR_ERROR, "failed to start a session");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (strcmp(name, "libinput") == 0) {
|
|
#if WLR_HAS_LIBINPUT_BACKEND
|
|
return wlr_libinput_backend_create(display, *session);
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
} else {
|
|
#if WLR_HAS_DRM_BACKEND
|
|
return attempt_drm_backend(display, backend, *session);
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
wlr_log(WLR_ERROR, "unrecognized backend '%s'", name);
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_backend *wlr_backend_autocreate(struct wl_display *display) {
|
|
struct wlr_backend *backend = wlr_multi_backend_create(display);
|
|
struct wlr_multi_backend *multi = (struct wlr_multi_backend *)backend;
|
|
if (!backend) {
|
|
wlr_log(WLR_ERROR, "could not allocate multibackend");
|
|
return NULL;
|
|
}
|
|
|
|
char *names = getenv("WLR_BACKENDS");
|
|
if (names) {
|
|
wlr_log(WLR_INFO, "Loading user-specified backends due to WLR_BACKENDS: %s",
|
|
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, &multi->session, name);
|
|
if (subbackend == NULL) {
|
|
wlr_log(WLR_ERROR, "failed to start backend '%s'", name);
|
|
wlr_session_destroy(multi->session);
|
|
wlr_backend_destroy(backend);
|
|
free(names);
|
|
return NULL;
|
|
}
|
|
|
|
if (!wlr_multi_backend_add(backend, subbackend)) {
|
|
wlr_log(WLR_ERROR, "failed to add backend '%s'", name);
|
|
wlr_session_destroy(multi->session);
|
|
wlr_backend_destroy(backend);
|
|
free(names);
|
|
return NULL;
|
|
}
|
|
|
|
name = strtok_r(NULL, ",", &saveptr);
|
|
}
|
|
|
|
free(names);
|
|
return backend;
|
|
}
|
|
|
|
if (getenv("WAYLAND_DISPLAY") || getenv("WAYLAND_SOCKET")) {
|
|
struct wlr_backend *wl_backend = attempt_wl_backend(display);
|
|
if (!wl_backend) {
|
|
goto error;
|
|
}
|
|
|
|
wlr_multi_backend_add(backend, wl_backend);
|
|
return backend;
|
|
}
|
|
|
|
#if WLR_HAS_X11_BACKEND
|
|
const char *x11_display = getenv("DISPLAY");
|
|
if (x11_display) {
|
|
struct wlr_backend *x11_backend =
|
|
attempt_x11_backend(display, x11_display);
|
|
if (!x11_backend) {
|
|
goto error;
|
|
}
|
|
|
|
wlr_multi_backend_add(backend, x11_backend);
|
|
return backend;
|
|
}
|
|
#endif
|
|
|
|
// Attempt DRM+libinput
|
|
multi->session = wlr_session_create(display);
|
|
if (!multi->session) {
|
|
wlr_log(WLR_ERROR, "Failed to start a DRM session");
|
|
wlr_backend_destroy(backend);
|
|
return NULL;
|
|
}
|
|
|
|
#if WLR_HAS_LIBINPUT_BACKEND
|
|
struct wlr_backend *libinput = wlr_libinput_backend_create(display,
|
|
multi->session);
|
|
if (!libinput) {
|
|
wlr_log(WLR_ERROR, "Failed to start libinput backend");
|
|
wlr_session_destroy(multi->session);
|
|
wlr_backend_destroy(backend);
|
|
return NULL;
|
|
}
|
|
wlr_multi_backend_add(backend, libinput);
|
|
#endif
|
|
|
|
#if WLR_HAS_DRM_BACKEND
|
|
struct wlr_backend *primary_drm =
|
|
attempt_drm_backend(display, backend, multi->session);
|
|
if (!primary_drm) {
|
|
wlr_log(WLR_ERROR, "Failed to open any DRM device");
|
|
wlr_backend_destroy(libinput);
|
|
wlr_session_destroy(multi->session);
|
|
wlr_backend_destroy(backend);
|
|
return NULL;
|
|
}
|
|
|
|
return backend;
|
|
#endif
|
|
|
|
error:
|
|
wlr_backend_destroy(backend);
|
|
return NULL;
|
|
}
|