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       dri2_surf->back->age = 0;
 290    }
 291    if (dri2_surf->back->dri_buffer == NULL)
 292       return -1;
 293
 294    dri2_surf->back->locked = 1;
 295    memcpy(buffer, dri2_surf->back->dri_buffer, sizeof *buffer);
 296
 297    return 0;
 298 }
 299
 300 static int
 301 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 302            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 303 {
 304    struct dri2_egl_display *dri2_dpy =
 305       dri2_egl_display(dri2_surf->base.Resource.Display);
 306    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 307
 308    if (b == NULL) {
 309       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 310                                          attachment, format,
 311                                          dri2_surf->base.Width,
 312                                          dri2_surf->base.Height);
 313       dri2_surf->dri_buffers[attachment] = b;
 314    }
 315    if (b == NULL)
 316       return -1;
 317
 318    memcpy(buffer, b, sizeof *buffer);
 319
 320    return 0;
 321 }
 322
 323 static __DRIbuffer *
 324 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 325                              int *width, int *height,
 326                              unsigned int *attachments, int count,
 327                              int *out_count, void *loaderPrivate)
 328 {
 329    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 330    struct dri2_egl_display *dri2_dpy =
 331       dri2_egl_display(dri2_surf->base.Resource.Display);
 332    int i, j;
 333
 334    if (dri2_surf->base.Type == EGL_WINDOW_BIT &&
 335        (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 336         dri2_surf->base.Height != dri2_surf->wl_win->height)) {
 337
 338       dri2_release_buffers(dri2_surf);
 339
 340       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 341       dri2_surf->base.Height = dri2_surf->wl_win->height;
 342       dri2_surf->dx = dri2_surf->wl_win->dx;
 343       dri2_surf->dy = dri2_surf->wl_win->dy;
 344    }
 345
 346    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 347       switch (attachments[i]) {
 348       case __DRI_BUFFER_BACK_LEFT:
 349          if (get_back_bo(dri2_surf, &dri2_surf->buffers[j]) < 0) {
 350             _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 351             return NULL;
 352          }
 353          break;
 354       default:
 355          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 356                         &dri2_surf->buffers[j]) < 0) {
 357             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 358             return NULL;
 359          }
 360          break;
 361       }
 362    }
 363
 364    /* If we have an extra unlocked buffer at this point, we had to do triple
 365     * buffering for a while, but now can go back to just double buffering.
 366     * That means we can free any unlocked buffer now. */
 367    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 368       if (!dri2_surf->color_buffers[i].locked &&
 369           dri2_surf->color_buffers[i].wl_buffer) {
 370          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 371          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 372                                        dri2_surf->color_buffers[i].dri_buffer);
 373          dri2_surf->color_buffers[i].wl_buffer = NULL;
 374          dri2_surf->color_buffers[i].dri_buffer = NULL;
 375       }
 376    }
 377
 378    *out_count = j;
 379    if (j == 0)
 380            return NULL;
 381
 382    *width = dri2_surf->base.Width;
 383    *height = dri2_surf->base.Height;
 384
 385    return dri2_surf->buffers;
 386 }
 387
 388 static __DRIbuffer *
 389 dri2_get_buffers(__DRIdrawable * driDrawable,
 390                  int *width, int *height,
 391                  unsigned int *attachments, int count,
 392                  int *out_count, void *loaderPrivate)
 393 {
 394    unsigned int *attachments_with_format;
 395    __DRIbuffer *buffer;
 396    const unsigned int format = 32;
 397    int i;
 398
 399    attachments_with_format = calloc(count * 2, sizeof(unsigned int));
 400    if (!attachments_with_format) {
 401       *out_count = 0;
 402       return NULL;
 403    }
 404
 405    for (i = 0; i < count; ++i) {
 406       attachments_with_format[2*i] = attachments[i];
 407       attachments_with_format[2*i + 1] = format;
 408    }
 409
 410    buffer =
 411       dri2_get_buffers_with_format(driDrawable,
 412                                    width, height,
 413                                    attachments_with_format, count,
 414                                    out_count, loaderPrivate);
 415
 416    free(attachments_with_format);
 417
 418    return buffer;
 419 }
 420
 421 static void
 422 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 423 {
 424    (void) driDrawable;
 425    (void) loaderPrivate;
 426 }
 427
 428 static void
 429 wayland_frame_callback(void *data, struct wl_callback *callback, uint32_t time)
 430 {
 431    struct dri2_egl_surface *dri2_surf = data;
 432
 433    dri2_surf->frame_callback = NULL;
 434    wl_callback_destroy(callback);
 435 }
 436
 437 static const struct wl_callback_listener frame_listener = {
 438         wayland_frame_callback
 439 };
 440
 441 /**
 442  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 443  */
 444 static EGLBoolean
 445 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 446 {
 447    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 448    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 449    __DRIbuffer buffer;
 450    int i, ret = 0;
 451
 452    while (dri2_surf->frame_callback && ret != -1)
 453       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 454    if (ret < 0)
 455       return EGL_FALSE;
 456
 457    dri2_surf->frame_callback = wl_surface_frame(dri2_surf->wl_win->surface);
 458    wl_callback_add_listener(dri2_surf->frame_callback,
 459                             &frame_listener, dri2_surf);
 460    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->frame_callback,
 461                       dri2_dpy->wl_queue);
 462
 463    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 464       if (dri2_surf->color_buffers[i].age > 0)
 465          dri2_surf->color_buffers[i].age++;
 466
 467    /* Make sure we have a back buffer in case we're swapping without ever
 468     * rendering. */
 469    if (get_back_bo(dri2_surf, &buffer) < 0) {
 470       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 471       return EGL_FALSE;
 472    }
 473
 474    dri2_surf->back->age = 1;
 475    dri2_surf->current = dri2_surf->back;
 476    dri2_surf->back = NULL;
 477
 478    if (dri2_surf->current->wl_buffer == NULL) {
 479       dri2_surf->current->wl_buffer =
 480          wl_drm_create_buffer(dri2_dpy->wl_drm,
 481                               dri2_surf->current->dri_buffer->name,
 482                               dri2_surf->base.Width,
 483                               dri2_surf->base.Height,
 484                               dri2_surf->current->dri_buffer->pitch,
 485                               dri2_surf->format);
 486       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 487                          dri2_dpy->wl_queue);
 488       wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 489                              &wl_buffer_listener, dri2_surf);
 490    }
 491
 492    wl_surface_attach(dri2_surf->wl_win->surface,
 493                      dri2_surf->current->wl_buffer,
 494                      dri2_surf->dx, dri2_surf->dy);
 495
 496    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 497    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 498    /* reset resize growing parameters */
 499    dri2_surf->dx = 0;
 500    dri2_surf->dy = 0;
 501
 502    wl_surface_damage(dri2_surf->wl_win->surface, 0, 0,
 503                      dri2_surf->base.Width, dri2_surf->base.Height);
 504
 505    wl_surface_commit(dri2_surf->wl_win->surface);
 506
 507    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 508    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 509
 510    return EGL_TRUE;
 511 }
 512
 513 static EGLint
 514 dri2_query_buffer_age(_EGLDriver *drv,
 515                       _EGLDisplay *disp, _EGLSurface *surface)
 516 {
 517    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 518    __DRIbuffer buffer;
 519
 520    if (get_back_bo(dri2_surf, &buffer) < 0) {
 521       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 522       return 0;
 523    }
 524
 525    return dri2_surf->back->age;
 526 }
 527
 528 static int
 529 dri2_wayland_authenticate(_EGLDisplay *disp, uint32_t id)
 530 {
 531    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 532    int ret = 0;
 533
 534    dri2_dpy->authenticated = 0;
 535
 536    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 537    if (roundtrip(dri2_dpy) < 0)
 538       ret = -1;
 539
 540    if (!dri2_dpy->authenticated)
 541       ret = -1;
 542
 543    /* reset authenticated */
 544    dri2_dpy->authenticated = 1;
 545
 546    return ret;
 547 }
 548
 549 /**
 550  * Called via eglTerminate(), drv->API.Terminate().
 551  */
 552 static EGLBoolean
 553 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 554 {
 555    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 556
 557    _eglReleaseDisplayResources(drv, disp);
 558    _eglCleanupDisplay(disp);
 559
 560    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 561    close(dri2_dpy->fd);
 562    dlclose(dri2_dpy->driver);
 563    free(dri2_dpy->driver_name);
 564    free(dri2_dpy->device_name);
 565    wl_drm_destroy(dri2_dpy->wl_drm);
 566    if (dri2_dpy->own_device)
 567       wl_display_disconnect(dri2_dpy->wl_dpy);
 568    free(dri2_dpy);
 569    disp->DriverData = NULL;
 570
 571    return EGL_TRUE;
 572 }
 573
 574 static void
 575 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 576 {
 577    struct dri2_egl_display *dri2_dpy = data;
 578    drm_magic_t magic;
 579
 580    dri2_dpy->device_name = strdup(device);
 581    if (!dri2_dpy->device_name)
 582       return;
 583
 584 #ifdef O_CLOEXEC
 585    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 586    if (dri2_dpy->fd == -1 && errno == EINVAL)
 587 #endif
 588    {
 589       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 590       if (dri2_dpy->fd != -1)
 591          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 592             FD_CLOEXEC);
 593    }
 594    if (dri2_dpy->fd == -1) {
 595       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 596               dri2_dpy->device_name, strerror(errno));
 597       return;
 598    }
 599
 600    drmGetMagic(dri2_dpy->fd, &magic);
 601    wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 602 }
 603
 604 static void
 605 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 606 {
 607    struct dri2_egl_display *dri2_dpy = data;
 608
 609    switch (format) {
 610    case WL_DRM_FORMAT_ARGB8888:
 611       dri2_dpy->formats |= HAS_ARGB8888;
 612       break;
 613    case WL_DRM_FORMAT_XRGB8888:
 614       dri2_dpy->formats |= HAS_XRGB8888;
 615       break;
 616    }
 617 }
 618
 619 static void
 620 drm_handle_authenticated(void *data, struct wl_drm *drm)
 621 {
 622    struct dri2_egl_display *dri2_dpy = data;
 623
 624    dri2_dpy->authenticated = 1;
 625 }
 626
 627 static const struct wl_drm_listener drm_listener = {
 628         drm_handle_device,
 629         drm_handle_format,
 630         drm_handle_authenticated
 631 };
 632
 633 static void
 634 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 635                        const char *interface, uint32_t version)
 636 {
 637    struct dri2_egl_display *dri2_dpy = data;
 638
 639    if (strcmp(interface, "wl_drm") == 0) {
 640       dri2_dpy->wl_drm =
 641          wl_registry_bind(registry, name, &wl_drm_interface, 1);
 642       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 643    }
 644 }
 645
 646 static const struct wl_registry_listener registry_listener = {
 647         registry_handle_global
 648 };
 649
 650 EGLBoolean
 651 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
 652 {
 653    struct dri2_egl_display *dri2_dpy;
 654    const __DRIconfig *config;
 655    uint32_t types;
 656    int i;
 657    static const unsigned int argb_masks[4] =
 658       { 0xff0000, 0xff00, 0xff, 0xff000000 };
 659    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
 660
 661    drv->API.CreateWindowSurface = dri2_create_window_surface;
 662    drv->API.DestroySurface = dri2_destroy_surface;
 663    drv->API.SwapBuffers = dri2_swap_buffers;
 664    drv->API.Terminate = dri2_terminate;
 665    drv->API.QueryBufferAge = dri2_query_buffer_age;
 666
 667    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 668    if (!dri2_dpy)
 669       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 670
 671    disp->DriverData = (void *) dri2_dpy;
 672    if (disp->PlatformDisplay == NULL) {
 673       dri2_dpy->wl_dpy = wl_display_connect(NULL);
 674       if (dri2_dpy->wl_dpy == NULL)
 675          goto cleanup_dpy;
 676       dri2_dpy->own_device = 1;
 677    } else {
 678       dri2_dpy->wl_dpy = disp->PlatformDisplay;
 679    }
 680
 681    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 682    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
 683    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
 684                       dri2_dpy->wl_queue);
 685    wl_registry_add_listener(dri2_dpy->wl_registry,
 686                             &registry_listener, dri2_dpy);
 687    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
 688       goto cleanup_dpy;
 689
 690    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
 691       goto cleanup_drm;
 692
 693    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
 694       goto cleanup_fd;
 695
 696    dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
 697    if (dri2_dpy->driver_name == NULL) {
 698       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
 699       goto cleanup_fd;
 700    }
 701
 702    if (!dri2_load_driver(disp))
 703       goto cleanup_driver_name;
 704
 705    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 706    dri2_dpy->dri2_loader_extension.base.version = 3;
 707    dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
 708    dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 709    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 710       dri2_get_buffers_with_format;
 711
 712    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 713    dri2_dpy->extensions[1] = &image_lookup_extension.base;
 714    dri2_dpy->extensions[2] = &use_invalidate.base;
 715    dri2_dpy->extensions[3] = NULL;
 716
 717    if (!dri2_create_screen(disp))
 718       goto cleanup_driver;
 719
 720    types = EGL_WINDOW_BIT;
 721    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
 722       config = dri2_dpy->driver_configs[i];
 723       if (dri2_dpy->formats & HAS_XRGB8888)
 724          dri2_add_config(disp, config, i + 1, 0, types, NULL, rgb_masks);
 725       if (dri2_dpy->formats & HAS_ARGB8888)
 726          dri2_add_config(disp, config, i + 1, 0, types, NULL, argb_masks);
 727    }
 728
 729    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
 730    disp->Extensions.EXT_buffer_age = EGL_TRUE;
 731    dri2_dpy->authenticate = dri2_wayland_authenticate;
 732
 733    /* we're supporting EGL 1.4 */
 734    disp->VersionMajor = 1;
 735    disp->VersionMinor = 4;
 736
 737    return EGL_TRUE;
 738
 739  cleanup_driver:
 740    dlclose(dri2_dpy->driver);
 741  cleanup_driver_name:
 742    free(dri2_dpy->driver_name);
 743  cleanup_fd:
 744    close(dri2_dpy->fd);
 745  cleanup_drm:
 746    free(dri2_dpy->device_name);
 747    wl_drm_destroy(dri2_dpy->wl_drm);
 748  cleanup_dpy:
 749    free(dri2_dpy);
 750
 751    return EGL_FALSE;
 752 }