src/egl/drivers/dri2/platform_wayland.c

   1 /*
   2  * Copyright © 2011-2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  27  */
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <limits.h>
  32 #include <dlfcn.h>
  33 #include <errno.h>
  34 #include <unistd.h>
  35 #include <fcntl.h>
  36 #include <xf86drm.h>
  37
  38 #include "egl_dri2.h"
  39
  40 #include <wayland-client.h>
  41 #include "wayland-drm-client-protocol.h"
  42
  43 enum wl_drm_format_flags {
  44    HAS_ARGB8888 = 1,
  45    HAS_XRGB8888 = 2
  46 };
  47
  48 static void
  49 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  50 {
  51    int *done = data;
  52
  53    *done = 1;
  54    wl_callback_destroy(callback);
  55 }
  56
  57 static const struct wl_callback_listener sync_listener = {
  58    sync_callback
  59 };
  60
  61 static int
  62 roundtrip(struct dri2_egl_display *dri2_dpy)
  63 {
  64    struct wl_callback *callback;
  65    int done = 0, ret = 0;
  66
  67    callback = wl_display_sync(dri2_dpy->wl_dpy);
  68    wl_callback_add_listener(callback, &sync_listener, &done);
  69    wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
  70    while (ret != -1 && !done)
  71       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  72
  73    if (!done)
  74       wl_callback_destroy(callback);
  75
  76    return ret;
  77 }
  78
  79 static void
  80 wl_buffer_release(void *data, struct wl_buffer *buffer)
  81 {
  82    struct dri2_egl_surface *dri2_surf = data;
  83    int i;
  84
  85    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  86       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  87          break;
  88
  89    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
  90       wl_buffer_destroy(buffer);
  91       return;
  92    }
  93
  94    dri2_surf->color_buffers[i].locked = 0;
  95 }
  96
  97 static struct wl_buffer_listener wl_buffer_listener = {
  98    wl_buffer_release
  99 };
 100
 101 static void
 102 resize_callback(struct wl_egl_window *wl_win, void *data)
 103 {
 104    struct dri2_egl_surface *dri2_surf = data;
 105    struct dri2_egl_display *dri2_dpy =
 106       dri2_egl_display(dri2_surf->base.Resource.Display);
 107
 108    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 109 }
 110
 111 /**
 112  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 113  */
 114 static _EGLSurface *
 115 dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 116                     _EGLConfig *conf, EGLNativeWindowType window,
 117                     const EGLint *attrib_list)
 118 {
 119    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 120    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 121    struct dri2_egl_surface *dri2_surf;
 122
 123    (void) drv;
 124
 125    dri2_surf = malloc(sizeof *dri2_surf);
 126    if (!dri2_surf) {
 127       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 128       return NULL;
 129    }
 130
 131    memset(dri2_surf, 0, sizeof *dri2_surf);
 132    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 133       goto cleanup_surf;
 134
 135    if (conf->AlphaSize == 0)
 136       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 137    else
 138       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 139
 140    switch (type) {
 141    case EGL_WINDOW_BIT:
 142       dri2_surf->wl_win = (struct wl_egl_window *) window;
 143
 144       dri2_surf->wl_win->private = dri2_surf;
 145       dri2_surf->wl_win->resize_callback = resize_callback;
 146
 147       dri2_surf->base.Width =  -1;
 148       dri2_surf->base.Height = -1;
 149       break;
 150    default:
 151       goto cleanup_surf;
 152    }
 153
 154    dri2_surf->dri_drawable =
 155       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 156                                             type == EGL_WINDOW_BIT ?
 157                                             dri2_conf->dri_double_config :
 158                                             dri2_conf->dri_single_config,
 159                                             dri2_surf);
 160    if (dri2_surf->dri_drawable == NULL) {
 161       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 162       goto cleanup_dri_drawable;
 163    }
 164
 165    return &dri2_surf->base;
 166
 167  cleanup_dri_drawable:
 168    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 169  cleanup_surf:
 170    free(dri2_surf);
 171
 172    return NULL;
 173 }
 174
 175 /**
 176  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 177  */
 178 static _EGLSurface *
 179 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 180                            _EGLConfig *conf, EGLNativeWindowType window,
 181                            const EGLint *attrib_list)
 182 {
 183    return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 184                               window, attrib_list);
 185 }
 186
 187 /**
 188  * Called via eglDestroySurface(), drv->API.DestroySurface().
 189  */
 190 static EGLBoolean
 191 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 192 {
 193    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 194    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 195    int i;
 196
 197    (void) drv;
 198
 199    if (!_eglPutSurface(surf))
 200       return EGL_TRUE;
 201
 202    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 203
 204    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 205       if (dri2_surf->color_buffers[i].wl_buffer)
 206          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 207       if (dri2_surf->color_buffers[i].dri_buffer)
 208          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 209                                        dri2_surf->color_buffers[i].dri_buffer);
 210    }
 211
 212    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 213       if (dri2_surf->dri_buffers[i] &&
 214           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 215          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 216                                        dri2_surf->dri_buffers[i]);
 217
 218    if (dri2_surf->frame_callback)
 219       wl_callback_destroy(dri2_surf->frame_callback);
 220
 221    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 222       dri2_surf->wl_win->private = NULL;
 223       dri2_surf->wl_win->resize_callback = NULL;
 224    }
 225
 226    free(surf);
 227
 228    return EGL_TRUE;
 229 }
 230
 231 static void
 232 dri2_release_buffers(struct dri2_egl_surface *dri2_surf)
 233 {
 234    struct dri2_egl_display *dri2_dpy =
 235       dri2_egl_display(dri2_surf->base.Resource.Display);
 236    int i;
 237
 238    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 239       if (dri2_surf->color_buffers[i].wl_buffer &&
 240           !dri2_surf->color_buffers[i].locked)
 241          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 242       if (dri2_surf->color_buffers[i].dri_buffer)
 243          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 244                                        dri2_surf->color_buffers[i].dri_buffer);
 245
 246       dri2_surf->color_buffers[i].wl_buffer = NULL;
 247       dri2_surf->color_buffers[i].dri_buffer = NULL;
 248       dri2_surf->color_buffers[i].locked = 0;
 249    }
 250
 251    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 252       if (dri2_surf->dri_buffers[i] &&
 253           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 254          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 255                                        dri2_surf->dri_buffers[i]);
 256 }
 257
 258 static int
 259 get_back_bo(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 260 {
 261    struct dri2_egl_display *dri2_dpy =
 262       dri2_egl_display(dri2_surf->base.Resource.Display);
 263    int i;
 264
 265    /* There might be a buffer release already queued that wasn't processed */
 266    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 267
 268    if (dri2_surf->back == NULL) {
 269       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 270          /* Get an unlocked buffer, preferrably one with a dri_buffer already
 271           * allocated. */
 272          if (dri2_surf->color_buffers[i].locked)
 273             continue;
 274          if (dri2_surf->back == NULL)
 275             dri2_surf->back = &dri2_surf->color_buffers[i];
 276          else if (dri2_surf->back->dri_buffer == NULL)
 277             dri2_surf->back = &dri2_surf->color_buffers[i];
 278       }
 279    }
 280
 281    if (dri2_surf->back == NULL)
 282       return -1;
 283    if (dri2_surf->back->dri_buffer == NULL) {
 284       dri2_surf->back->dri_buffer =
 285          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 286                                         __DRI_BUFFER_BACK_LEFT, 32,
 287                                         dri2_surf->base.Width,
 288                                         dri2_surf->base.Height);
 289    }
 290    if (dri2_surf->back->dri_buffer == NULL)
 291       return -1;
 292
 293    dri2_surf->back->locked = 1;
 294    memcpy(buffer, dri2_surf->back->dri_buffer, sizeof *buffer);
 295
 296    return 0;
 297 }
 298
 299 static int
 300 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 301            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 302 {
 303    struct dri2_egl_display *dri2_dpy =
 304       dri2_egl_display(dri2_surf->base.Resource.Display);
 305    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 306
 307    if (b == NULL) {
 308       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 309                                          attachment, format,
 310                                          dri2_surf->base.Width,
 311                                          dri2_surf->base.Height);
 312       dri2_surf->dri_buffers[attachment] = b;
 313    }
 314    if (b == NULL)
 315       return -1;
 316
 317    memcpy(buffer, b, sizeof *buffer);
 318
 319    return 0;
 320 }
 321
 322 static __DRIbuffer *
 323 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 324                              int *width, int *height,
 325                              unsigned int *attachments, int count,
 326                              int *out_count, void *loaderPrivate)
 327 {
 328    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 329    struct dri2_egl_display *dri2_dpy =
 330       dri2_egl_display(dri2_surf->base.Resource.Display);
 331    int i, j;
 332
 333    if (dri2_surf->base.Type == EGL_WINDOW_BIT &&
 334        (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 335         dri2_surf->base.Height != dri2_surf->wl_win->height)) {
 336
 337       dri2_release_buffers(dri2_surf);
 338
 339       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 340       dri2_surf->base.Height = dri2_surf->wl_win->height;
 341       dri2_surf->dx = dri2_surf->wl_win->dx;
 342       dri2_surf->dy = dri2_surf->wl_win->dy;
 343    }
 344
 345    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 346       switch (attachments[i]) {
 347       case __DRI_BUFFER_BACK_LEFT:
 348          if (get_back_bo(dri2_surf, &dri2_surf->buffers[j]) < 0) {
 349             _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 350             return NULL;
 351          }
 352          break;
 353       default:
 354          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 355                         &dri2_surf->buffers[j]) < 0) {
 356             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 357             return NULL;
 358          }
 359          break;
 360       }
 361    }
 362
 363    /* If we have an extra unlocked buffer at this point, we had to do triple
 364     * buffering for a while, but now can go back to just double buffering.
 365     * That means we can free any unlocked buffer now. */
 366    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 367       if (!dri2_surf->color_buffers[i].locked &&
 368           dri2_surf->color_buffers[i].wl_buffer) {
 369          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 370          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 371                                        dri2_surf->color_buffers[i].dri_buffer);
 372          dri2_surf->color_buffers[i].wl_buffer = NULL;
 373          dri2_surf->color_buffers[i].dri_buffer = NULL;
 374       }
 375    }
 376
 377    *out_count = j;
 378    if (j == 0)
 379            return NULL;
 380
 381    *width = dri2_surf->base.Width;
 382    *height = dri2_surf->base.Height;
 383
 384    return dri2_surf->buffers;
 385 }
 386
 387 static __DRIbuffer *
 388 dri2_get_buffers(__DRIdrawable * driDrawable,
 389                  int *width, int *height,
 390                  unsigned int *attachments, int count,
 391                  int *out_count, void *loaderPrivate)
 392 {
 393    unsigned int *attachments_with_format;
 394    __DRIbuffer *buffer;
 395    const unsigned int format = 32;
 396    int i;
 397
 398    attachments_with_format = calloc(count * 2, sizeof(unsigned int));
 399    if (!attachments_with_format) {
 400       *out_count = 0;
 401       return NULL;
 402    }
 403
 404    for (i = 0; i < count; ++i) {
 405       attachments_with_format[2*i] = attachments[i];
 406       attachments_with_format[2*i + 1] = format;
 407    }
 408
 409    buffer =
 410       dri2_get_buffers_with_format(driDrawable,
 411                                    width, height,
 412                                    attachments_with_format, count,
 413                                    out_count, loaderPrivate);
 414
 415    free(attachments_with_format);
 416
 417    return buffer;
 418 }
 419
 420 static void
 421 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 422 {
 423    (void) driDrawable;
 424    (void) loaderPrivate;
 425 }
 426
 427 static void
 428 wayland_frame_callback(void *data, struct wl_callback *callback, uint32_t time)
 429 {
 430    struct dri2_egl_surface *dri2_surf = data;
 431
 432    dri2_surf->frame_callback = NULL;
 433    wl_callback_destroy(callback);
 434 }
 435
 436 static const struct wl_callback_listener frame_listener = {
 437         wayland_frame_callback
 438 };
 439
 440 /**
 441  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 442  */
 443 static EGLBoolean
 444 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 445 {
 446    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 447    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 448    int ret = 0;
 449
 450    while (dri2_surf->frame_callback && ret != -1)
 451       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 452    if (ret < 0)
 453       return EGL_FALSE;
 454
 455    dri2_surf->frame_callback = wl_surface_frame(dri2_surf->wl_win->surface);
 456    wl_callback_add_listener(dri2_surf->frame_callback,
 457                             &frame_listener, dri2_surf);
 458    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->frame_callback,
 459                       dri2_dpy->wl_queue);
 460
 461    dri2_surf->current = dri2_surf->back;
 462    dri2_surf->back = NULL;
 463
 464    if (dri2_surf->current->wl_buffer == NULL) {
 465       dri2_surf->current->wl_buffer =
 466          wl_drm_create_buffer(dri2_dpy->wl_drm,
 467                               dri2_surf->current->dri_buffer->name,
 468                               dri2_surf->base.Width,
 469                               dri2_surf->base.Height,
 470                               dri2_surf->current->dri_buffer->pitch,
 471                               dri2_surf->format);
 472       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 473                          dri2_dpy->wl_queue);
 474       wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 475                              &wl_buffer_listener, dri2_surf);
 476    }
 477
 478    wl_surface_attach(dri2_surf->wl_win->surface,
 479                      dri2_surf->current->wl_buffer,
 480                      dri2_surf->dx, dri2_surf->dy);
 481
 482    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 483    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 484    /* reset resize growing parameters */
 485    dri2_surf->dx = 0;
 486    dri2_surf->dy = 0;
 487
 488    wl_surface_damage(dri2_surf->wl_win->surface, 0, 0,
 489                      dri2_surf->base.Width, dri2_surf->base.Height);
 490
 491    wl_surface_commit(dri2_surf->wl_win->surface);
 492
 493    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 494    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 495
 496    return EGL_TRUE;
 497 }
 498
 499 static int
 500 dri2_wayland_authenticate(_EGLDisplay *disp, uint32_t id)
 501 {
 502    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 503    int ret = 0;
 504
 505    dri2_dpy->authenticated = 0;
 506
 507    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 508    if (roundtrip(dri2_dpy) < 0)
 509       ret = -1;
 510
 511    if (!dri2_dpy->authenticated)
 512       ret = -1;
 513
 514    /* reset authenticated */
 515    dri2_dpy->authenticated = 1;
 516
 517    return ret;
 518 }
 519
 520 /**
 521  * Called via eglTerminate(), drv->API.Terminate().
 522  */
 523 static EGLBoolean
 524 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 525 {
 526    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 527
 528    _eglReleaseDisplayResources(drv, disp);
 529    _eglCleanupDisplay(disp);
 530
 531    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 532    close(dri2_dpy->fd);
 533    dlclose(dri2_dpy->driver);
 534    free(dri2_dpy->driver_name);
 535    free(dri2_dpy->device_name);
 536    wl_drm_destroy(dri2_dpy->wl_drm);
 537    if (dri2_dpy->own_device)
 538       wl_display_disconnect(dri2_dpy->wl_dpy);
 539    free(dri2_dpy);
 540    disp->DriverData = NULL;
 541
 542    return EGL_TRUE;
 543 }
 544
 545 static void
 546 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 547 {
 548    struct dri2_egl_display *dri2_dpy = data;
 549    drm_magic_t magic;
 550
 551    dri2_dpy->device_name = strdup(device);
 552    if (!dri2_dpy->device_name)
 553       return;
 554
 555 #ifdef O_CLOEXEC
 556    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 557    if (dri2_dpy->fd == -1 && errno == EINVAL)
 558 #endif
 559    {
 560       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 561       if (dri2_dpy->fd != -1)
 562          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 563             FD_CLOEXEC);
 564    }
 565    if (dri2_dpy->fd == -1) {
 566       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 567               dri2_dpy->device_name, strerror(errno));
 568       return;
 569    }
 570
 571    drmGetMagic(dri2_dpy->fd, &magic);
 572    wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 573 }
 574
 575 static void
 576 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 577 {
 578    struct dri2_egl_display *dri2_dpy = data;
 579
 580    switch (format) {
 581    case WL_DRM_FORMAT_ARGB8888:
 582       dri2_dpy->formats |= HAS_ARGB8888;
 583       break;
 584    case WL_DRM_FORMAT_XRGB8888:
 585       dri2_dpy->formats |= HAS_XRGB8888;
 586       break;
 587    }
 588 }
 589
 590 static void
 591 drm_handle_authenticated(void *data, struct wl_drm *drm)
 592 {
 593    struct dri2_egl_display *dri2_dpy = data;
 594
 595    dri2_dpy->authenticated = 1;
 596 }
 597
 598 static const struct wl_drm_listener drm_listener = {
 599         drm_handle_device,
 600         drm_handle_format,
 601         drm_handle_authenticated
 602 };
 603
 604 static void
 605 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 606                        const char *interface, uint32_t version)
 607 {
 608    struct dri2_egl_display *dri2_dpy = data;
 609
 610    if (strcmp(interface, "wl_drm") == 0) {
 611       dri2_dpy->wl_drm =
 612          wl_registry_bind(registry, name, &wl_drm_interface, 1);
 613       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 614    }
 615 }
 616
 617 static const struct wl_registry_listener registry_listener = {
 618         registry_handle_global
 619 };
 620
 621 EGLBoolean
 622 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
 623 {
 624    struct dri2_egl_display *dri2_dpy;
 625    const __DRIconfig *config;
 626    uint32_t types;
 627    int i;
 628    static const unsigned int argb_masks[4] =
 629       { 0xff0000, 0xff00, 0xff, 0xff000000 };
 630    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
 631
 632    drv->API.CreateWindowSurface = dri2_create_window_surface;
 633    drv->API.DestroySurface = dri2_destroy_surface;
 634    drv->API.SwapBuffers = dri2_swap_buffers;
 635    drv->API.Terminate = dri2_terminate;
 636
 637    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 638    if (!dri2_dpy)
 639       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 640
 641    disp->DriverData = (void *) dri2_dpy;
 642    if (disp->PlatformDisplay == NULL) {
 643       dri2_dpy->wl_dpy = wl_display_connect(NULL);
 644       if (dri2_dpy->wl_dpy == NULL)
 645          goto cleanup_dpy;
 646       dri2_dpy->own_device = 1;
 647    } else {
 648       dri2_dpy->wl_dpy = disp->PlatformDisplay;
 649    }
 650
 651    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 652    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
 653    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
 654                       dri2_dpy->wl_queue);
 655    wl_registry_add_listener(dri2_dpy->wl_registry,
 656                             &registry_listener, dri2_dpy);
 657    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
 658       goto cleanup_dpy;
 659
 660    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
 661       goto cleanup_drm;
 662
 663    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
 664       goto cleanup_fd;
 665
 666    dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
 667    if (dri2_dpy->driver_name == NULL) {
 668       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
 669       goto cleanup_fd;
 670    }
 671
 672    if (!dri2_load_driver(disp))
 673       goto cleanup_driver_name;
 674
 675    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 676    dri2_dpy->dri2_loader_extension.base.version = 3;
 677    dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
 678    dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 679    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 680       dri2_get_buffers_with_format;
 681
 682    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 683    dri2_dpy->extensions[1] = &image_lookup_extension.base;
 684    dri2_dpy->extensions[2] = &use_invalidate.base;
 685    dri2_dpy->extensions[3] = NULL;
 686
 687    if (!dri2_create_screen(disp))
 688       goto cleanup_driver;
 689
 690    types = EGL_WINDOW_BIT;
 691    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
 692       config = dri2_dpy->driver_configs[i];
 693       if (dri2_dpy->formats & HAS_XRGB8888)
 694          dri2_add_config(disp, config, i + 1, 0, types, NULL, rgb_masks);
 695       if (dri2_dpy->formats & HAS_ARGB8888)
 696          dri2_add_config(disp, config, i + 1, 0, types, NULL, argb_masks);
 697    }
 698
 699    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
 700    dri2_dpy->authenticate = dri2_wayland_authenticate;
 701
 702    /* we're supporting EGL 1.4 */
 703    disp->VersionMajor = 1;
 704    disp->VersionMinor = 4;
 705
 706    return EGL_TRUE;
 707
 708  cleanup_driver:
 709    dlclose(dri2_dpy->driver);
 710  cleanup_driver_name:
 711    free(dri2_dpy->driver_name);
 712  cleanup_fd:
 713    close(dri2_dpy->fd);
 714  cleanup_drm:
 715    free(dri2_dpy->device_name);
 716    wl_drm_destroy(dri2_dpy->wl_drm);
 717  cleanup_dpy:
 718    free(dri2_dpy);
 719
 720    return EGL_FALSE;
 721 }