compositor/compositor-drm.c

   1 /*
   2  * Copyright © 2008-2010 Kristian Høgsberg
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 #define _GNU_SOURCE
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <fcntl.h>
  25 #include <unistd.h>
  26
  27 #include <xf86drm.h>
  28 #include <xf86drmMode.h>
  29
  30 #include "compositor.h"
  31
  32 struct drm_compositor {
  33         struct wlsc_compositor base;
  34
  35         struct udev *udev;
  36         struct wl_event_source *drm_source;
  37
  38         struct udev_monitor *udev_monitor;
  39         struct wl_event_source *udev_drm_source;
  40
  41         struct {
  42                 int fd;
  43         } drm;
  44         uint32_t crtc_allocator;
  45         uint32_t connector_allocator;
  46         struct tty *tty;
  47
  48         PFNEGLCREATEDRMIMAGEMESA create_drm_image;
  49         PFNEGLEXPORTDRMIMAGEMESA export_drm_image;
  50 };
  51
  52 struct drm_output {
  53         struct wlsc_output   base;
  54
  55         drmModeModeInfo mode;
  56         uint32_t crtc_id;
  57         uint32_t connector_id;
  58         GLuint rbo[2];
  59         uint32_t fb_id[2];
  60         EGLImageKHR image[2];
  61         uint32_t current;
  62
  63         struct wlsc_surface *scanout_surface;
  64
  65         uint32_t fs_surf_fb_id;
  66         uint32_t pending_fs_surf_fb_id;
  67 };
  68
  69 static int
  70 drm_output_prepare_render(struct wlsc_output *output_base)
  71 {
  72         struct drm_output *output = (struct drm_output *) output_base;
  73
  74         glFramebufferRenderbuffer(GL_FRAMEBUFFER,
  75                                   GL_COLOR_ATTACHMENT0,
  76                                   GL_RENDERBUFFER,
  77                                   output->rbo[output->current]);
  78
  79         if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
  80                 return -1;
  81
  82         return 0;
  83 }
  84
  85 static int
  86 drm_output_present(struct wlsc_output *output_base)
  87 {
  88         struct drm_output *output = (struct drm_output *) output_base;
  89         struct drm_compositor *c =
  90                 (struct drm_compositor *) output->base.compositor;
  91         uint32_t fb_id = 0;
  92
  93         if (drm_output_prepare_render(&output->base))
  94                 return -1;
  95         glFlush();
  96
  97         output->current ^= 1;
  98
  99         if (output->scanout_surface != NULL) {
 100                 output->scanout_surface = NULL;
 101                 fb_id = output->fs_surf_fb_id;
 102         } else {
 103                 fb_id = output->fb_id[output->current ^ 1];
 104         }
 105
 106         drmModePageFlip(c->drm.fd, output->crtc_id,
 107                         fb_id,
 108                         DRM_MODE_PAGE_FLIP_EVENT, output);
 109
 110         return 0;
 111 }
 112
 113 static void
 114 page_flip_handler(int fd, unsigned int frame,
 115                   unsigned int sec, unsigned int usec, void *data)
 116 {
 117         struct drm_output *output = (struct drm_output *) data;
 118         struct drm_compositor *c =
 119                 (struct drm_compositor *) output->base.compositor;
 120         uint32_t msecs;
 121
 122         if (output->pending_fs_surf_fb_id) {
 123                 drmModeRmFB(c->drm.fd, output->pending_fs_surf_fb_id);
 124                 output->pending_fs_surf_fb_id = 0;
 125         }
 126
 127         if (output->fs_surf_fb_id) {
 128                 output->pending_fs_surf_fb_id = output->fs_surf_fb_id;
 129                 output->fs_surf_fb_id = 0;
 130         }
 131
 132         msecs = sec * 1000 + usec / 1000;
 133         wlsc_output_finish_frame(&output->base, msecs);
 134 }
 135
 136 static int
 137 drm_output_prepare_scanout_surface(struct wlsc_output *output_base,
 138                                    struct wlsc_surface *es)
 139 {
 140         struct drm_output *output = (struct drm_output *) output_base;
 141         struct drm_compositor *c =
 142                 (struct drm_compositor *) output->base.compositor;
 143         EGLint handle, stride;
 144         int ret;
 145         uint32_t fb_id = 0;
 146
 147         if (es->width != output->base.width ||
 148             es->height != output->base.height ||
 149             es->image == EGL_NO_IMAGE_KHR)
 150                 return -1;
 151
 152         c->export_drm_image(c->base.display,
 153                             es->image, NULL, &handle, &stride);
 154
 155         if (handle == 0)
 156                 return -1;
 157
 158         ret = drmModeAddFB(c->drm.fd,
 159                            output->base.width, output->base.height,
 160                            32, 32, stride, handle, &fb_id);
 161
 162         if (ret)
 163                 return -1;
 164
 165         output->fs_surf_fb_id = fb_id;
 166         output->scanout_surface = es;
 167
 168         return 0;
 169 }
 170
 171 static int
 172 drm_output_set_cursor(struct wlsc_output *output_base,
 173                       struct wl_input_device *input)
 174 {
 175         struct drm_output *output = (struct drm_output *) output_base;
 176         struct drm_compositor *c =
 177                 (struct drm_compositor *) output->base.compositor;
 178         struct wlsc_input_device *eid = (struct wlsc_input_device *) input;
 179         EGLint handle, stride;
 180         int ret = -1;
 181         pixman_region32_t cursor_region;
 182
 183         pixman_region32_init_rect(&cursor_region,
 184                                   eid->sprite->x, eid->sprite->y,
 185                                   eid->sprite->width, eid->sprite->height);
 186
 187         pixman_region32_intersect_rect(&cursor_region, &cursor_region,
 188                                        output->base.x, output->base.y,
 189                                        output->base.width, output->base.height);
 190
 191         if (!pixman_region32_not_empty(&cursor_region)) {
 192                 ret = 0;
 193                 goto out;
 194         }
 195
 196         if (eid->sprite->image == EGL_NO_IMAGE_KHR)
 197                 goto out;
 198
 199         if (eid->sprite->width > 64 || eid->sprite->height > 64)
 200                 goto out;
 201
 202         c->export_drm_image(c->base.display, eid->sprite->image,
 203                             NULL, &handle, &stride);
 204
 205         if (stride != 64 * 4) {
 206                 fprintf(stderr, "info: cursor stride is != 64\n");
 207                 goto out;
 208         }
 209
 210         ret = drmModeSetCursor(c->drm.fd, output->crtc_id, handle, 64, 64);
 211         if (ret) {
 212                 fprintf(stderr, "failed to set cursor: %s\n", strerror(-ret));
 213                 goto out;
 214         }
 215
 216         ret = drmModeMoveCursor(c->drm.fd, output->crtc_id,
 217                                 eid->sprite->x - output->base.x,
 218                                 eid->sprite->y - output->base.y);
 219         if (ret) {
 220                 fprintf(stderr, "failed to move cursor: %s\n", strerror(-ret));
 221                 goto out;
 222         }
 223
 224         printf("info: set hardware cursor\n");
 225
 226 out:
 227         pixman_region32_fini(&cursor_region);
 228         if (ret)
 229                 drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0);
 230         return ret;
 231 }
 232
 233 static int
 234 on_drm_input(int fd, uint32_t mask, void *data)
 235 {
 236         drmEventContext evctx;
 237
 238         memset(&evctx, 0, sizeof evctx);
 239         evctx.version = DRM_EVENT_CONTEXT_VERSION;
 240         evctx.page_flip_handler = page_flip_handler;
 241         drmHandleEvent(fd, &evctx);
 242
 243         return 1;
 244 }
 245
 246 static int
 247 init_egl(struct drm_compositor *ec, struct udev_device *device)
 248 {
 249         EGLint major, minor;
 250         const char *extensions, *filename;
 251         int fd;
 252         static const EGLint context_attribs[] = {
 253                 EGL_CONTEXT_CLIENT_VERSION, 2,
 254                 EGL_NONE
 255         };
 256
 257         filename = udev_device_get_devnode(device);
 258         fd = open(filename, O_RDWR, O_CLOEXEC);
 259         if (fd < 0) {
 260                 /* Probably permissions error */
 261                 fprintf(stderr, "couldn't open %s, skipping\n",
 262                         udev_device_get_devnode(device));
 263                 return -1;
 264         }
 265
 266         ec->drm.fd = fd;
 267         ec->base.display = eglGetDisplay(FD_TO_EGL_NATIVE_DPY(ec->drm.fd));
 268         if (ec->base.display == NULL) {
 269                 fprintf(stderr, "failed to create display\n");
 270                 return -1;
 271         }
 272
 273         if (!eglInitialize(ec->base.display, &major, &minor)) {
 274                 fprintf(stderr, "failed to initialize display\n");
 275                 return -1;
 276         }
 277
 278         extensions = eglQueryString(ec->base.display, EGL_EXTENSIONS);
 279         if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
 280                 fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
 281                 return -1;
 282         }
 283
 284         if (!eglBindAPI(EGL_OPENGL_ES_API)) {
 285                 fprintf(stderr, "failed to bind api EGL_OPENGL_ES_API\n");
 286                 return -1;
 287         }
 288
 289         ec->base.context = eglCreateContext(ec->base.display, NULL,
 290                                             EGL_NO_CONTEXT, context_attribs);
 291         if (ec->base.context == NULL) {
 292                 fprintf(stderr, "failed to create context\n");
 293                 return -1;
 294         }
 295
 296         if (!eglMakeCurrent(ec->base.display, EGL_NO_SURFACE,
 297                             EGL_NO_SURFACE, ec->base.context)) {
 298                 fprintf(stderr, "failed to make context current\n");
 299                 return -1;
 300         }
 301
 302         return 0;
 303 }
 304
 305 static drmModeModeInfo builtin_1024x768 = {
 306         63500,                  /* clock */
 307         1024, 1072, 1176, 1328, 0,
 308         768, 771, 775, 798, 0,
 309         59920,
 310         DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
 311         0,
 312         "1024x768"
 313 };
 314
 315 static int
 316 create_output_for_connector(struct drm_compositor *ec,
 317                             drmModeRes *resources,
 318                             drmModeConnector *connector,
 319                             int x, int y)
 320 {
 321         struct drm_output *output;
 322         drmModeEncoder *encoder;
 323         drmModeModeInfo *mode;
 324         int i, ret;
 325         EGLint handle, stride, attribs[] = {
 326                 EGL_WIDTH,              0,
 327                 EGL_HEIGHT,             0,
 328                 EGL_DRM_BUFFER_FORMAT_MESA,     EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
 329                 EGL_DRM_BUFFER_USE_MESA,        EGL_DRM_BUFFER_USE_SCANOUT_MESA,
 330                 EGL_NONE
 331         };
 332
 333         output = malloc(sizeof *output);
 334         if (output == NULL)
 335                 return -1;
 336
 337         if (connector->count_modes > 0)
 338                 mode = &connector->modes[0];
 339         else
 340                 mode = &builtin_1024x768;
 341
 342         encoder = drmModeGetEncoder(ec->drm.fd, connector->encoders[0]);
 343         if (encoder == NULL) {
 344                 fprintf(stderr, "No encoder for connector.\n");
 345                 return -1;
 346         }
 347
 348         for (i = 0; i < resources->count_crtcs; i++) {
 349                 if (encoder->possible_crtcs & (1 << i) &&
 350                     !(ec->crtc_allocator & (1 << resources->crtcs[i])))
 351                         break;
 352         }
 353         if (i == resources->count_crtcs) {
 354                 fprintf(stderr, "No usable crtc for encoder.\n");
 355                 return -1;
 356         }
 357
 358         memset(output, 0, sizeof *output);
 359         wlsc_output_init(&output->base, &ec->base, x, y,
 360                          mode->hdisplay, mode->vdisplay, 0);
 361
 362         output->crtc_id = resources->crtcs[i];
 363         ec->crtc_allocator |= (1 << output->crtc_id);
 364
 365         output->connector_id = connector->connector_id;
 366         ec->connector_allocator |= (1 << output->connector_id);
 367         output->mode = *mode;
 368
 369         drmModeFreeEncoder(encoder);
 370
 371         glGenRenderbuffers(2, output->rbo);
 372         for (i = 0; i < 2; i++) {
 373                 glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
 374
 375                 attribs[1] = output->base.width;
 376                 attribs[3] = output->base.height;
 377                 output->image[i] =
 378                         ec->create_drm_image(ec->base.display, attribs);
 379                 ec->base.image_target_renderbuffer_storage(GL_RENDERBUFFER,
 380                                                            output->image[i]);
 381                 ec->export_drm_image(ec->base.display, output->image[i],
 382                                      NULL, &handle, &stride);
 383
 384                 ret = drmModeAddFB(ec->drm.fd,
 385                                    output->base.width, output->base.height,
 386                                    32, 32, stride, handle, &output->fb_id[i]);
 387                 if (ret) {
 388                         fprintf(stderr, "failed to add fb %d: %m\n", i);
 389                         return -1;
 390                 }
 391         }
 392
 393         output->current = 0;
 394         glFramebufferRenderbuffer(GL_FRAMEBUFFER,
 395                                   GL_COLOR_ATTACHMENT0,
 396                                   GL_RENDERBUFFER,
 397                                   output->rbo[output->current]);
 398         ret = drmModeSetCrtc(ec->drm.fd, output->crtc_id,
 399                              output->fb_id[output->current ^ 1], 0, 0,
 400                              &output->connector_id, 1, &output->mode);
 401         if (ret) {
 402                 fprintf(stderr, "failed to set mode: %m\n");
 403                 return -1;
 404         }
 405
 406         output->scanout_surface = NULL;
 407         output->base.prepare_render = drm_output_prepare_render;
 408         output->base.present = drm_output_present;
 409         output->base.prepare_scanout_surface =
 410                 drm_output_prepare_scanout_surface;
 411         output->base.set_hardware_cursor = drm_output_set_cursor;
 412
 413         wl_list_insert(ec->base.output_list.prev, &output->base.link);
 414
 415         return 0;
 416 }
 417
 418 static int
 419 create_outputs(struct drm_compositor *ec, int option_connector)
 420 {
 421         drmModeConnector *connector;
 422         drmModeRes *resources;
 423         int i;
 424         int x = 0, y = 0;
 425
 426         resources = drmModeGetResources(ec->drm.fd);
 427         if (!resources) {
 428                 fprintf(stderr, "drmModeGetResources failed\n");
 429                 return -1;
 430         }
 431
 432         for (i = 0; i < resources->count_connectors; i++) {
 433                 connector = drmModeGetConnector(ec->drm.fd, resources->connectors[i]);
 434                 if (connector == NULL)
 435                         continue;
 436
 437                 if (connector->connection == DRM_MODE_CONNECTED &&
 438                     (option_connector == 0 ||
 439                      connector->connector_id == option_connector))
 440                         if (create_output_for_connector(ec, resources,
 441                                                         connector, x, y) < 0)
 442                                 return -1;
 443
 444                 x += container_of(ec->base.output_list.prev, struct wlsc_output,
 445                                   link)->width;
 446
 447                 drmModeFreeConnector(connector);
 448         }
 449
 450         if (wl_list_empty(&ec->base.output_list)) {
 451                 fprintf(stderr, "No currently active connector found.\n");
 452                 return -1;
 453         }
 454
 455         drmModeFreeResources(resources);
 456
 457         return 0;
 458 }
 459
 460 static int
 461 destroy_output(struct drm_output *output)
 462 {
 463         struct drm_compositor *ec =
 464                 (struct drm_compositor *) output->base.compositor;
 465         int i;
 466
 467         glFramebufferRenderbuffer(GL_FRAMEBUFFER,
 468                                   GL_COLOR_ATTACHMENT0,
 469                                   GL_RENDERBUFFER,
 470                                   0);
 471
 472         glBindRenderbuffer(GL_RENDERBUFFER, 0);
 473         glDeleteRenderbuffers(2, output->rbo);
 474
 475         for (i = 0; i < 2; i++) {
 476                 ec->base.destroy_image(ec->base.display, output->image[i]);
 477                 drmModeRmFB(ec->drm.fd, output->fb_id[i]);
 478         }
 479
 480         ec->crtc_allocator &= ~(1 << output->crtc_id);
 481         ec->connector_allocator &= ~(1 << output->connector_id);
 482
 483         wlsc_output_destroy(&output->base);
 484         wl_list_remove(&output->base.link);
 485
 486         free(output);
 487
 488         return 0;
 489 }
 490
 491 static void
 492 update_outputs(struct drm_compositor *ec)
 493 {
 494         drmModeConnector *connector;
 495         drmModeRes *resources;
 496         struct drm_output *output, *next;
 497         int x = 0, y = 0;
 498         int x_offset = 0, y_offset = 0;
 499         uint32_t connected = 0, disconnects = 0;
 500         int i;
 501
 502         resources = drmModeGetResources(ec->drm.fd);
 503         if (!resources) {
 504                 fprintf(stderr, "drmModeGetResources failed\n");
 505                 return;
 506         }
 507
 508         /* collect new connects */
 509         for (i = 0; i < resources->count_connectors; i++) {
 510                 connector =
 511                         drmModeGetConnector(ec->drm.fd,
 512                                             resources->connectors[i]);
 513                 if (connector == NULL ||
 514                     connector->connection != DRM_MODE_CONNECTED)
 515                         continue;
 516
 517                 connected |= (1 << connector->connector_id);
 518
 519                 if (!(ec->connector_allocator & (1 << connector->connector_id))) {
 520                         struct wlsc_output *last_output =
 521                                 container_of(ec->base.output_list.prev,
 522                                              struct wlsc_output, link);
 523
 524                         /* XXX: not yet needed, we die with 0 outputs */
 525                         if (!wl_list_empty(&ec->base.output_list))
 526                                 x = last_output->x + last_output->width;
 527                         else
 528                                 x = 0;
 529                         y = 0;
 530                         create_output_for_connector(ec, resources,
 531                                                     connector, x, y);
 532                         printf("connector %d connected\n",
 533                                connector->connector_id);
 534
 535                 }
 536                 drmModeFreeConnector(connector);
 537         }
 538         drmModeFreeResources(resources);
 539
 540         disconnects = ec->connector_allocator & ~connected;
 541         if (disconnects) {
 542                 wl_list_for_each_safe(output, next, &ec->base.output_list,
 543                                       base.link) {
 544                         if (x_offset != 0 || y_offset != 0) {
 545                                 wlsc_output_move(&output->base,
 546                                                  output->base.x - x_offset,
 547                                                  output->base.y - y_offset);
 548                         }
 549
 550                         if (disconnects & (1 << output->connector_id)) {
 551                                 disconnects &= ~(1 << output->connector_id);
 552                                 printf("connector %d disconnected\n",
 553                                        output->connector_id);
 554                                 x_offset += output->base.width;
 555                                 destroy_output(output);
 556                         }
 557                 }
 558         }
 559
 560         /* FIXME: handle zero outputs, without terminating */
 561         if (ec->connector_allocator == 0)
 562                 wl_display_terminate(ec->base.wl_display);
 563 }
 564
 565 static int
 566 udev_event_is_hotplug(struct udev_device *device)
 567 {
 568         struct udev_list_entry *list, *hotplug_entry;
 569
 570         list = udev_device_get_properties_list_entry(device);
 571
 572         hotplug_entry = udev_list_entry_get_by_name(list, "HOTPLUG");
 573         if (hotplug_entry == NULL)
 574                 return 0;
 575
 576         return strcmp(udev_list_entry_get_value(hotplug_entry), "1") == 0;
 577 }
 578
 579 static int
 580 udev_drm_event(int fd, uint32_t mask, void *data)
 581 {
 582         struct drm_compositor *ec = data;
 583         struct udev_device *event;
 584
 585         event = udev_monitor_receive_device(ec->udev_monitor);
 586
 587         if (udev_event_is_hotplug(event))
 588                 update_outputs(ec);
 589
 590         udev_device_unref(event);
 591
 592         return 1;
 593 }
 594
 595 static EGLImageKHR
 596 drm_compositor_create_cursor_image(struct wlsc_compositor *ec,
 597                                    int32_t width, int32_t height)
 598 {
 599         EGLint image_attribs[] = {
 600                 EGL_WIDTH, 0,
 601                 EGL_HEIGHT, 0,
 602                 EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
 603                 0, 0,
 604                 EGL_NONE
 605         };
 606         EGLint stride, name;
 607         EGLImageKHR tmp_image, image;
 608         struct drm_compositor *c = (struct drm_compositor *) ec;
 609
 610         if (width > 64 || height > 64)
 611                 return EGL_NO_IMAGE_KHR;
 612
 613         image_attribs[1] = 64;
 614         image_attribs[3] = 64;
 615         image_attribs[6] = EGL_DRM_BUFFER_USE_MESA;
 616         image_attribs[7] = EGL_DRM_BUFFER_USE_SCANOUT_MESA;
 617
 618         tmp_image = c->create_drm_image(ec->display, image_attribs);
 619
 620         c->export_drm_image(ec->display, tmp_image, &name, NULL, &stride);
 621
 622         if (stride == 64)
 623                 return tmp_image;
 624
 625         /* recreate image width stide 64 forced */
 626         image_attribs[1] = width;
 627         image_attribs[3] = height;
 628         image_attribs[6] = EGL_DRM_BUFFER_STRIDE_MESA;
 629         image_attribs[7] = 64;
 630
 631         image = ec->create_image(ec->display,
 632                                  EGL_NO_CONTEXT,
 633                                  EGL_DRM_BUFFER_MESA,
 634                                  (EGLClientBuffer)(intptr_t) name,
 635                                  image_attribs);
 636         c->export_drm_image(ec->display, image, &name, NULL, &stride);
 637
 638         ec->destroy_image(ec->display, tmp_image);
 639
 640         return image;
 641 }
 642
 643 static void
 644 drm_destroy(struct wlsc_compositor *ec)
 645 {
 646         struct drm_compositor *d = (struct drm_compositor *) ec;
 647
 648         tty_destroy(d->tty);
 649
 650         free(d);
 651 }
 652
 653 struct wlsc_compositor *
 654 drm_compositor_create(struct wl_display *display, int connector)
 655 {
 656         struct drm_compositor *ec;
 657         struct udev_enumerate *e;
 658         struct udev_list_entry *entry;
 659         struct udev_device *device;
 660         const char *path;
 661         struct wl_event_loop *loop;
 662
 663         ec = malloc(sizeof *ec);
 664         if (ec == NULL)
 665                 return NULL;
 666
 667         memset(ec, 0, sizeof *ec);
 668         ec->udev = udev_new();
 669         if (ec->udev == NULL) {
 670                 fprintf(stderr, "failed to initialize udev context\n");
 671                 return NULL;
 672         }
 673
 674         e = udev_enumerate_new(ec->udev);
 675         udev_enumerate_add_match_subsystem(e, "drm");
 676         udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
 677         udev_enumerate_scan_devices(e);
 678         device = NULL;
 679         udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
 680                 path = udev_list_entry_get_name(entry);
 681                 device = udev_device_new_from_syspath(ec->udev, path);
 682                 break;
 683         }
 684         udev_enumerate_unref(e);
 685
 686         if (device == NULL) {
 687                 fprintf(stderr, "no drm device found\n");
 688                 return NULL;
 689         }
 690
 691         ec->base.wl_display = display;
 692         if (init_egl(ec, device) < 0) {
 693                 fprintf(stderr, "failed to initialize egl\n");
 694                 return NULL;
 695         }
 696
 697         ec->base.destroy = drm_destroy;
 698         ec->base.create_cursor_image = drm_compositor_create_cursor_image;
 699
 700         ec->base.focus = 1;
 701
 702         glGenFramebuffers(1, &ec->base.fbo);
 703         glBindFramebuffer(GL_FRAMEBUFFER, ec->base.fbo);
 704
 705         ec->create_drm_image =
 706                 (void *) eglGetProcAddress("eglCreateDRMImageMESA");
 707         ec->export_drm_image =
 708                 (void *) eglGetProcAddress("eglExportDRMImageMESA");
 709
 710         /* Can't init base class until we have a current egl context */
 711         if (wlsc_compositor_init(&ec->base, display) < 0)
 712                 return NULL;
 713
 714         if (create_outputs(ec, connector) < 0) {
 715                 fprintf(stderr, "failed to create output for %s\n", path);
 716                 return NULL;
 717         }
 718
 719         evdev_input_add_devices(&ec->base, ec->udev);
 720
 721         loop = wl_display_get_event_loop(ec->base.wl_display);
 722         ec->drm_source =
 723                 wl_event_loop_add_fd(loop, ec->drm.fd,
 724                                      WL_EVENT_READABLE, on_drm_input, ec);
 725         ec->tty = tty_create(&ec->base);
 726
 727         ec->udev_monitor = udev_monitor_new_from_netlink(ec->udev, "udev");
 728         if (ec->udev_monitor == NULL) {
 729                 fprintf(stderr, "failed to intialize udev monitor\n");
 730                 return NULL;
 731         }
 732         udev_monitor_filter_add_match_subsystem_devtype(ec->udev_monitor,
 733                                                         "drm", NULL);
 734         ec->udev_drm_source =
 735                 wl_event_loop_add_fd(loop, udev_monitor_get_fd(ec->udev_monitor),
 736                                      WL_EVENT_READABLE, udev_drm_event, ec);
 737
 738         if (udev_monitor_enable_receiving(ec->udev_monitor) < 0) {
 739                 fprintf(stderr, "failed to enable udev-monitor receiving\n");
 740                 return NULL;
 741         }
 742
 743         return &ec->base;
 744 }
 745
 746 struct wlsc_compositor *
 747 backend_init(struct wl_display *display, char *options)
 748 {
 749         int connector, i;
 750         char *p, *value;
 751
 752         static char * const tokens[] = { "connector", NULL };
 753
 754         p = options;
 755         while (i = getsubopt(&p, tokens, &value), i != -1) {
 756                 switch (i) {
 757                 case 0:
 758                         connector = strol(value, NULL, 0);
 759                         break;
 760                 }
 761         }
 762
 763         return drm_compositor_create(display, connector);
 764 }