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-rw-r--r--backend/backend.c7
-rw-r--r--backend/drm/drm.c3
-rw-r--r--backend/meson.build1
-rw-r--r--backend/wayland/backend.c3
-rw-r--r--backend/x11/backend.c336
-rw-r--r--include/backend/x11.h56
-rw-r--r--include/wlr/backend/x11.h13
-rw-r--r--include/wlr/egl.h2
-rw-r--r--meson.build2
-rw-r--r--render/egl.c23
10 files changed, 424 insertions, 22 deletions
diff --git a/backend/backend.c b/backend/backend.c
index 88b9dfbc..ec309da4 100644
--- a/backend/backend.c
+++ b/backend/backend.c
@@ -10,6 +10,7 @@
#include <wlr/backend/drm.h>
#include <wlr/backend/libinput.h>
#include <wlr/backend/wayland.h>
+#include <wlr/backend/x11.h>
#include <wlr/backend/multi.h>
#include <wlr/util/log.h>
@@ -77,9 +78,9 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display) {
}
}
- if (getenv("DISPLAY")) {
- wlr_log(L_ERROR, "X11 backend is not implemented"); // TODO
- return NULL;
+ const char *x11_display = getenv("DISPLAY");
+ if (x11_display) {
+ return wlr_x11_backend_create(display, x11_display);
}
// Attempt DRM+libinput
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index 8e70e528..1a656172 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -182,7 +182,8 @@ bool wlr_drm_renderer_init(struct wlr_drm_renderer *renderer, int fd) {
return false;
}
- if (!wlr_egl_init(&renderer->egl, EGL_PLATFORM_GBM_MESA, renderer->gbm)) {
+ if (!wlr_egl_init(&renderer->egl, EGL_PLATFORM_GBM_MESA,
+ GBM_FORMAT_ARGB8888, renderer->gbm)) {
gbm_device_destroy(renderer->gbm);
return false;
}
diff --git a/backend/meson.build b/backend/meson.build
index a3cb7b64..9e3b6fed 100644
--- a/backend/meson.build
+++ b/backend/meson.build
@@ -22,6 +22,7 @@ backend_files = files(
'wayland/registry.c',
'wayland/wl_seat.c',
'wayland/os-compatibility.c',
+ 'x11/backend.c',
)
if systemd.found()
diff --git a/backend/wayland/backend.c b/backend/wayland/backend.c
index 264ce338..e57f3583 100644
--- a/backend/wayland/backend.c
+++ b/backend/wayland/backend.c
@@ -42,6 +42,7 @@ static bool wlr_wl_backend_start(struct wlr_backend *_backend) {
}
backend->started = true;
+
for (size_t i = 0; i < backend->requested_outputs; ++i) {
wlr_wl_output_create(&backend->backend);
}
@@ -145,7 +146,7 @@ struct wlr_backend *wlr_wl_backend_create(struct wl_display *display) {
return false;
}
- wlr_egl_init(&backend->egl, EGL_PLATFORM_WAYLAND_EXT, backend->remote_display);
+ wlr_egl_init(&backend->egl, EGL_PLATFORM_WAYLAND_EXT, WL_SHM_FORMAT_ARGB8888, backend->remote_display);
wlr_egl_bind_display(&backend->egl, backend->local_display);
return &backend->backend;
diff --git a/backend/x11/backend.c b/backend/x11/backend.c
new file mode 100644
index 00000000..88c022d1
--- /dev/null
+++ b/backend/x11/backend.c
@@ -0,0 +1,336 @@
+#define _POSIX_C_SOURCE 199309L
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <EGL/egl.h>
+#include <wayland-server.h>
+#include <xcb/xcb.h>
+#include <xcb/glx.h>
+#include <X11/Xlib-xcb.h>
+#include <linux/input-event-codes.h>
+#include <wlr/backend/interface.h>
+#include <wlr/backend/x11.h>
+#include <wlr/egl.h>
+#include <wlr/interfaces/wlr_output.h>
+#include <wlr/interfaces/wlr_input_device.h>
+#include <wlr/interfaces/wlr_keyboard.h>
+#include <wlr/interfaces/wlr_pointer.h>
+#include <wlr/util/log.h>
+#include "backend/x11.h"
+
+static struct wlr_backend_impl backend_impl;
+static struct wlr_output_impl output_impl;
+
+static uint32_t xcb_button_to_wl(uint32_t button) {
+ switch (button) {
+ case XCB_BUTTON_INDEX_1: return BTN_LEFT;
+ case XCB_BUTTON_INDEX_2: return BTN_MIDDLE;
+ case XCB_BUTTON_INDEX_3: return BTN_RIGHT;
+ // XXX: I'm not sure the scroll-wheel direction is right
+ case XCB_BUTTON_INDEX_4: return BTN_GEAR_UP;
+ case XCB_BUTTON_INDEX_5: return BTN_GEAR_DOWN;
+ default: return 0;
+ }
+}
+
+static bool handle_x11_event(struct wlr_x11_backend *x11, xcb_generic_event_t *event) {
+ struct wlr_x11_output *output = &x11->output;
+
+ switch (event->response_type) {
+ case XCB_EXPOSE: {
+ wl_signal_emit(&output->wlr_output.events.frame, output);
+ break;
+ }
+ case XCB_KEY_PRESS:
+ case XCB_KEY_RELEASE: {
+ xcb_key_press_event_t *ev = (xcb_key_press_event_t *)event;
+ struct wlr_event_keyboard_key key = {
+ .time_sec = ev->time / 1000,
+ .time_usec = (ev->time % 1000) * 1000,
+ .keycode = ev->detail - 8,
+ .state = event->response_type == XCB_KEY_PRESS ?
+ WLR_KEY_PRESSED : WLR_KEY_RELEASED,
+ };
+
+ wl_signal_emit(&x11->keyboard.events.key, &key);
+ x11->time = ev->time;
+ break;
+ }
+ case XCB_BUTTON_PRESS:
+ case XCB_BUTTON_RELEASE: {
+ xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
+ struct wlr_event_pointer_button button = {
+ .device = &x11->pointer_dev,
+ .time_sec = ev->time / 1000,
+ .time_usec = (ev->time % 1000) * 1000,
+ .button = xcb_button_to_wl(ev->detail),
+ .state = event->response_type == XCB_BUTTON_PRESS ?
+ WLR_BUTTON_PRESSED : WLR_BUTTON_RELEASED,
+ };
+
+ wl_signal_emit(&x11->pointer.events.button, &button);
+ x11->time = ev->time;
+ break;
+ }
+ case XCB_MOTION_NOTIFY: {
+ xcb_motion_notify_event_t *ev = (xcb_motion_notify_event_t *)event;
+ struct wlr_event_pointer_motion_absolute abs = {
+ .device = &x11->pointer_dev,
+ .time_sec = ev->time / 1000,
+ .time_usec = (ev->time % 1000) * 1000,
+ .x_mm = ev->event_x,
+ .y_mm = ev->event_y,
+ .width_mm = output->wlr_output.width,
+ .height_mm = output->wlr_output.height,
+ };
+
+ wl_signal_emit(&x11->pointer.events.motion_absolute, &abs);
+ x11->time = ev->time;
+ break;
+ }
+ case XCB_CONFIGURE_NOTIFY: {
+ xcb_configure_notify_event_t *ev = (xcb_configure_notify_event_t *)event;
+
+ output->wlr_output.width = ev->width;
+ output->wlr_output.height = ev->height;
+ wlr_output_update_matrix(&output->wlr_output);
+ wl_signal_emit(&output->wlr_output.events.resolution, output);
+
+ // Move the pointer to its new location
+ xcb_query_pointer_cookie_t cookie =
+ xcb_query_pointer(x11->xcb_conn, output->win);
+ xcb_query_pointer_reply_t *pointer =
+ xcb_query_pointer_reply(x11->xcb_conn, cookie, NULL);
+ if (!pointer) {
+ break;
+ }
+
+ struct wlr_event_pointer_motion_absolute abs = {
+ .device = &x11->pointer_dev,
+ .time_sec = x11->time / 1000,
+ .time_usec = (x11->time % 1000) * 1000,
+ .x_mm = pointer->root_x,
+ .y_mm = pointer->root_y,
+ .width_mm = output->wlr_output.width,
+ .height_mm = output->wlr_output.height,
+ };
+
+ wl_signal_emit(&x11->pointer.events.motion_absolute, &abs);
+ break;
+ }
+ case XCB_GLX_DELETE_QUERIES_ARB: {
+ wl_display_terminate(x11->wl_display);
+ return true;
+ break;
+ }
+ default:
+ break;
+ }
+
+ return false;
+}
+
+static int x11_event(int fd, uint32_t mask, void *data) {
+ struct wlr_x11_backend *x11 = data;
+ xcb_generic_event_t *e;
+ bool quit = false;
+
+ while (!quit && (e = xcb_poll_for_event(x11->xcb_conn))) {
+ quit = handle_x11_event(x11, e);
+ free(e);
+ }
+
+ return 0;
+}
+
+static int signal_frame(void *data) {
+ struct wlr_x11_backend *x11 = data;
+ wl_signal_emit(&x11->output.wlr_output.events.frame, &x11->output);
+ wl_event_source_timer_update(x11->frame_timer, 16);
+ return 0;
+}
+
+static void init_atom(struct wlr_x11_backend *x11, struct wlr_x11_atom *atom,
+ uint8_t only_if_exists, const char *name) {
+ atom->cookie = xcb_intern_atom(x11->xcb_conn, only_if_exists, strlen(name), name);
+ atom->reply = xcb_intern_atom_reply(x11->xcb_conn, atom->cookie, NULL);
+}
+
+struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
+ const char *x11_display) {
+ struct wlr_x11_backend *x11 = calloc(1, sizeof(*x11));
+ if (!x11) {
+ return NULL;
+ }
+
+ wlr_backend_init(&x11->backend, &backend_impl);
+ x11->wl_display = display;
+
+ x11->xlib_conn = XOpenDisplay(x11_display);
+ if (!x11->xlib_conn) {
+ wlr_log(L_ERROR, "Failed to open X connection");
+ return NULL;
+ }
+
+ x11->xcb_conn = XGetXCBConnection(x11->xlib_conn);
+ if (!x11->xcb_conn || xcb_connection_has_error(x11->xcb_conn)) {
+ wlr_log(L_ERROR, "Failed to open xcb connection");
+ goto error_x11;
+ }
+
+ XSetEventQueueOwner(x11->xlib_conn, XCBOwnsEventQueue);
+
+ int fd = xcb_get_file_descriptor(x11->xcb_conn);
+ struct wl_event_loop *ev = wl_display_get_event_loop(display);
+ x11->event_source = wl_event_loop_add_fd(ev, fd, WL_EVENT_READABLE, x11_event, x11);
+ if (!x11->event_source) {
+ wlr_log(L_ERROR, "Could not create event source");
+ goto error_x11;
+ }
+
+ x11->frame_timer = wl_event_loop_add_timer(ev, signal_frame, x11);
+
+ x11->screen = xcb_setup_roots_iterator(xcb_get_setup(x11->xcb_conn)).data;
+
+ if (!wlr_egl_init(&x11->egl, EGL_PLATFORM_X11_KHR,
+ x11->screen->root_visual, x11->xlib_conn)) {
+ goto error_event;
+ }
+
+ wlr_input_device_init(&x11->keyboard_dev, WLR_INPUT_DEVICE_KEYBOARD,
+ NULL, "X11 keyboard", 0, 0);
+ wlr_keyboard_init(&x11->keyboard, NULL);
+ x11->keyboard_dev.keyboard = &x11->keyboard;
+
+ wlr_input_device_init(&x11->pointer_dev, WLR_INPUT_DEVICE_POINTER,
+ NULL, "X11 pointer", 0, 0);
+ wlr_pointer_init(&x11->pointer, NULL);
+ x11->pointer_dev.pointer = &x11->pointer;
+
+ return &x11->backend;
+
+error_event:
+ wl_event_source_remove(x11->event_source);
+error_x11:
+ xcb_disconnect(x11->xcb_conn);
+ XCloseDisplay(x11->xlib_conn);
+ free(x11);
+ return NULL;
+}
+
+static bool wlr_x11_backend_start(struct wlr_backend *backend) {
+ struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
+ struct wlr_x11_output *output = &x11->output;
+
+ uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
+ uint32_t values[2] = {
+ x11->screen->white_pixel,
+ XCB_EVENT_MASK_EXPOSURE |
+ XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE |
+ XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE |
+ XCB_EVENT_MASK_POINTER_MOTION |
+ XCB_EVENT_MASK_STRUCTURE_NOTIFY
+ };
+
+ output->x11 = x11;
+
+ wlr_output_init(&output->wlr_output, &output_impl);
+ snprintf(output->wlr_output.name, sizeof(output->wlr_output.name), "X11-1");
+
+ output->win = xcb_generate_id(x11->xcb_conn);
+ xcb_create_window(x11->xcb_conn, XCB_COPY_FROM_PARENT, output->win, x11->screen->root,
+ 0, 0, 1024, 768, 1, XCB_WINDOW_CLASS_INPUT_OUTPUT,
+ x11->screen->root_visual, mask, values);
+
+ output->surf = wlr_egl_create_surface(&x11->egl, &output->win);
+ if (!output->surf) {
+ wlr_log(L_ERROR, "Failed to create EGL surface");
+ return false;
+ }
+
+ init_atom(x11, &x11->atoms.wm_protocols, 1, "WM_PROTOCOLS");
+ init_atom(x11, &x11->atoms.wm_delete_window, 0, "WM_DELETE_WINDOW");
+
+ xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
+ x11->atoms.wm_protocols.reply->atom, XCB_ATOM_ATOM, 32, 1,
+ &x11->atoms.wm_delete_window.reply->atom);
+
+ xcb_map_window(x11->xcb_conn, output->win);
+ xcb_flush(x11->xcb_conn);
+
+ wl_signal_emit(&x11->backend.events.output_add, output);
+ wl_signal_emit(&x11->backend.events.input_add, &x11->keyboard_dev);
+ wl_signal_emit(&x11->backend.events.input_add, &x11->pointer_dev);
+
+ wl_event_source_timer_update(x11->frame_timer, 16);
+
+ return true;
+}
+
+static void wlr_x11_backend_destroy(struct wlr_backend *backend) {
+ if (!backend) {
+ return;
+ }
+
+ struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
+
+ wl_event_source_remove(x11->frame_timer);
+ wlr_egl_free(&x11->egl);
+
+ xcb_disconnect(x11->xcb_conn);
+ free(x11);
+}
+
+static struct wlr_egl *wlr_x11_backend_get_egl(struct wlr_backend *backend) {
+ struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
+ return &x11->egl;
+}
+
+bool wlr_backend_is_x11(struct wlr_backend *backend) {
+ return backend->impl == &backend_impl;
+}
+
+static struct wlr_backend_impl backend_impl = {
+ .start = wlr_x11_backend_start,
+ .destroy = wlr_x11_backend_destroy,
+ .get_egl = wlr_x11_backend_get_egl,
+};
+
+static void output_transform(struct wlr_output *wlr_output, enum wl_output_transform transform) {
+ struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
+ output->wlr_output.transform = transform;
+}
+
+static void output_destroy(struct wlr_output *wlr_output) {
+ struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
+ struct wlr_x11_backend *x11 = output->x11;
+
+ eglDestroySurface(x11->egl.display, output->surf);
+ xcb_destroy_window(x11->xcb_conn, output->win);
+}
+
+static void output_make_current(struct wlr_output *wlr_output) {
+ struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
+ struct wlr_x11_backend *x11 = output->x11;
+
+ if (!eglMakeCurrent(x11->egl.display, output->surf, output->surf, x11->egl.context)) {
+ wlr_log(L_ERROR, "eglMakeCurrent failed: %s", egl_error());
+ }
+}
+
+static void output_swap_buffers(struct wlr_output *wlr_output) {
+ struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
+ struct wlr_x11_backend *x11 = output->x11;
+
+ if (!eglSwapBuffers(x11->egl.display, output->surf)) {
+ wlr_log(L_ERROR, "eglSwapBuffers failed: %s", egl_error());
+ }
+}
+
+static struct wlr_output_impl output_impl = {
+ .transform = output_transform,
+ .destroy = output_destroy,
+ .make_current = output_make_current,
+ .swap_buffers = output_swap_buffers,
+};
diff --git a/include/backend/x11.h b/include/backend/x11.h
new file mode 100644
index 00000000..b4284b63
--- /dev/null
+++ b/include/backend/x11.h
@@ -0,0 +1,56 @@
+#ifndef WLR_X11_H
+#define WLR_X11_H
+
+#include <stdbool.h>
+#include <xcb/xcb.h>
+#include <X11/Xlib-xcb.h>
+#include <wayland-server.h>
+#include <wlr/egl.h>
+#include <wlr/types/wlr_output.h>
+#include <wlr/types/wlr_input_device.h>
+
+struct wlr_x11_backend;
+
+struct wlr_x11_output {
+ struct wlr_output wlr_output;
+ struct wlr_x11_backend *x11;
+
+ xcb_window_t win;
+ EGLSurface surf;
+};
+
+struct wlr_x11_atom {
+ xcb_intern_atom_cookie_t cookie;
+ xcb_intern_atom_reply_t *reply;
+};
+
+struct wlr_x11_backend {
+ struct wlr_backend backend;
+ struct wl_display *wl_display;
+
+ Display *xlib_conn;
+ xcb_connection_t *xcb_conn;
+ xcb_screen_t *screen;
+
+ struct wlr_x11_output output;
+
+ struct wlr_keyboard keyboard;
+ struct wlr_input_device keyboard_dev;
+
+ struct wlr_pointer pointer;
+ struct wlr_input_device pointer_dev;
+
+ struct wlr_egl egl;
+ struct wl_event_source *event_source;
+ struct wl_event_source *frame_timer;
+
+ struct {
+ struct wlr_x11_atom wm_protocols;
+ struct wlr_x11_atom wm_delete_window;
+ } atoms;
+
+ // The time we last received an event
+ xcb_timestamp_t time;
+};
+
+#endif
diff --git a/include/wlr/backend/x11.h b/include/wlr/backend/x11.h
new file mode 100644
index 00000000..3901649b
--- /dev/null
+++ b/include/wlr/backend/x11.h
@@ -0,0 +1,13 @@
+#ifndef WLR_BACKEND_X11_H
+#define WLR_BACKEND_X11_H
+
+#include <stdbool.h>
+#include <wayland-server.h>
+#include <wlr/backend.h>
+
+struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
+ const char *x11_display);
+
+bool wlr_backend_is_x11(struct wlr_backend *backend);
+
+#endif
diff --git a/include/wlr/egl.h b/include/wlr/egl.h
index b37317a5..25329175 100644
--- a/include/wlr/egl.h
+++ b/include/wlr/egl.h
@@ -30,7 +30,7 @@ struct wlr_egl {
* Initializes an egl context for the given platform and remote display.
* Will attempt to load all possibly required api functions.
*/
-bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *display);
+bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, EGLint visual_id, void *display);
/**
* Frees all related egl resources, makes the context not-current and
diff --git a/meson.build b/meson.build
index c0fb50e1..520eceb9 100644
--- a/meson.build
+++ b/meson.build
@@ -45,6 +45,7 @@ udev = dependency('libudev')
pixman = dependency('pixman-1')
xcb = dependency('xcb')
xcb_composite = dependency('xcb-composite')
+x11_xcb = dependency('x11-xcb')
libcap = dependency('libcap', required: false)
systemd = dependency('libsystemd', required: false)
elogind = dependency('libelogind', required: false)
@@ -85,6 +86,7 @@ wlr_deps = [
pixman,
xcb,
xcb_composite,
+ x11_xcb,
libcap,
systemd,
math,
diff --git a/render/egl.c b/render/egl.c
index 048626ba..82dea50c 100644
--- a/render/egl.c
+++ b/render/egl.c
@@ -1,7 +1,6 @@
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
-#include <gbm.h> // GBM_FORMAT_XRGB8888
#include <stdlib.h>
#include <wlr/util/log.h>
#include <wlr/egl.h>
@@ -68,7 +67,7 @@ static bool egl_exts(struct wlr_egl *egl) {
return true;
}
-static bool egl_get_config(EGLDisplay disp, EGLConfig *out, EGLenum platform) {
+static bool egl_get_config(EGLDisplay disp, EGLConfig *out, EGLint visual_id) {
EGLint count = 0, matched = 0, ret;
ret = eglGetConfigs(disp, NULL, 0, &count);
@@ -86,21 +85,13 @@ static bool egl_get_config(EGLDisplay disp, EGLConfig *out, EGLenum platform) {
}
for (int i = 0; i < matched; ++i) {
- EGLint gbm_format;
-
- if (platform == EGL_PLATFORM_WAYLAND_EXT) {
- *out = configs[i];
- return true;
- }
-
- if (!eglGetConfigAttrib(disp,
- configs[i],
- EGL_NATIVE_VISUAL_ID,
- &gbm_format)) {
+ EGLint visual;
+ if (!eglGetConfigAttrib(disp, configs[i],
+ EGL_NATIVE_VISUAL_ID, &visual)) {
continue;
}
- if (gbm_format == GBM_FORMAT_ARGB8888) {
+ if (visual == visual_id) {
*out = configs[i];
return true;
}
@@ -110,7 +101,7 @@ static bool egl_get_config(EGLDisplay disp, EGLConfig *out, EGLenum platform) {
return false;
}
-bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform,
+bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, EGLint visual_id,
void *remote_display) {
if (!egl_exts(egl)) {
return false;
@@ -133,7 +124,7 @@ bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform,
goto error;
}
- if (!egl_get_config(egl->display, &egl->config, platform)) {
+ if (!egl_get_config(egl->display, &egl->config, visual_id)) {
wlr_log(L_ERROR, "Failed to get EGL config");
goto error;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 06:17:35 +0000