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_image)
 208          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 209    }
 210
 211    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 212       if (dri2_surf->dri_buffers[i] &&
 213           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 214          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 215                                        dri2_surf->dri_buffers[i]);
 216
 217    if (dri2_surf->frame_callback)
 218       wl_callback_destroy(dri2_surf->frame_callback);
 219
 220    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 221       dri2_surf->wl_win->private = NULL;
 222       dri2_surf->wl_win->resize_callback = NULL;
 223    }
 224
 225    free(surf);
 226
 227    return EGL_TRUE;
 228 }
 229
 230 static void
 231 dri2_release_buffers(struct dri2_egl_surface *dri2_surf)
 232 {
 233    struct dri2_egl_display *dri2_dpy =
 234       dri2_egl_display(dri2_surf->base.Resource.Display);
 235    int i;
 236
 237    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 238       if (dri2_surf->color_buffers[i].wl_buffer &&
 239           !dri2_surf->color_buffers[i].locked)
 240          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 241       if (dri2_surf->color_buffers[i].dri_image)
 242          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 243
 244       dri2_surf->color_buffers[i].wl_buffer = NULL;
 245       dri2_surf->color_buffers[i].dri_image = NULL;
 246       dri2_surf->color_buffers[i].locked = 0;
 247    }
 248
 249    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 250       if (dri2_surf->dri_buffers[i] &&
 251           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 252          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 253                                        dri2_surf->dri_buffers[i]);
 254 }
 255
 256 static int
 257 get_back_bo(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 258 {
 259    struct dri2_egl_display *dri2_dpy =
 260       dri2_egl_display(dri2_surf->base.Resource.Display);
 261    __DRIimage *image;
 262    int i, name, pitch;
 263
 264    /* There might be a buffer release already queued that wasn't processed */
 265    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 266
 267    if (dri2_surf->back == NULL) {
 268       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 269          /* Get an unlocked buffer, preferrably one with a dri_buffer already
 270           * allocated. */
 271          if (dri2_surf->color_buffers[i].locked)
 272             continue;
 273          if (dri2_surf->back == NULL)
 274             dri2_surf->back = &dri2_surf->color_buffers[i];
 275          else if (dri2_surf->back->dri_image == NULL)
 276             dri2_surf->back = &dri2_surf->color_buffers[i];
 277       }
 278    }
 279
 280    if (dri2_surf->back == NULL)
 281       return -1;
 282    if (dri2_surf->back->dri_image == NULL) {
 283       dri2_surf->back->dri_image =
 284          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 285                                       dri2_surf->base.Width,
 286                                       dri2_surf->base.Height,
 287                                       __DRI_IMAGE_FORMAT_ARGB8888,
 288                                       __DRI_IMAGE_USE_SHARE,
 289                                       NULL);
 290       dri2_surf->back->age = 0;
 291    }
 292    if (dri2_surf->back->dri_image == NULL)
 293       return -1;
 294
 295    image = dri2_surf->back->dri_image;
 296
 297    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 298    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 299
 300    dri2_surf->back->name = name;
 301    dri2_surf->back->pitch = pitch;
 302
 303    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 304    buffer->name = name;
 305    buffer->pitch = pitch;
 306    buffer->cpp = 4;
 307    buffer->flags = 0;
 308
 309    dri2_surf->back->locked = 1;
 310
 311    return 0;
 312 }
 313
 314 static int
 315 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 316            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 317 {
 318    struct dri2_egl_display *dri2_dpy =
 319       dri2_egl_display(dri2_surf->base.Resource.Display);
 320    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 321
 322    if (b == NULL) {
 323       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 324                                          attachment, format,
 325                                          dri2_surf->base.Width,
 326                                          dri2_surf->base.Height);
 327       dri2_surf->dri_buffers[attachment] = b;
 328    }
 329    if (b == NULL)
 330       return -1;
 331
 332    memcpy(buffer, b, sizeof *buffer);
 333
 334    return 0;
 335 }
 336
 337 static __DRIbuffer *
 338 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 339                              int *width, int *height,
 340                              unsigned int *attachments, int count,
 341                              int *out_count, void *loaderPrivate)
 342 {
 343    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 344    struct dri2_egl_display *dri2_dpy =
 345       dri2_egl_display(dri2_surf->base.Resource.Display);
 346    int i, j;
 347
 348    if (dri2_surf->base.Type == EGL_WINDOW_BIT &&
 349        (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 350         dri2_surf->base.Height != dri2_surf->wl_win->height)) {
 351
 352       dri2_release_buffers(dri2_surf);
 353
 354       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 355       dri2_surf->base.Height = dri2_surf->wl_win->height;
 356       dri2_surf->dx = dri2_surf->wl_win->dx;
 357       dri2_surf->dy = dri2_surf->wl_win->dy;
 358    }
 359
 360    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 361       switch (attachments[i]) {
 362       case __DRI_BUFFER_BACK_LEFT:
 363          if (get_back_bo(dri2_surf, &dri2_surf->buffers[j]) < 0) {
 364             _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 365             return NULL;
 366          }
 367          break;
 368       default:
 369          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 370                         &dri2_surf->buffers[j]) < 0) {
 371             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 372             return NULL;
 373          }
 374          break;
 375       }
 376    }
 377
 378    /* If we have an extra unlocked buffer at this point, we had to do triple
 379     * buffering for a while, but now can go back to just double buffering.
 380     * That means we can free any unlocked buffer now. */
 381    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 382       if (!dri2_surf->color_buffers[i].locked &&
 383           dri2_surf->color_buffers[i].wl_buffer) {
 384          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 385          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 386          dri2_surf->color_buffers[i].wl_buffer = NULL;
 387          dri2_surf->color_buffers[i].dri_image = NULL;
 388       }
 389    }
 390
 391    *out_count = j;
 392    if (j == 0)
 393            return NULL;
 394
 395    *width = dri2_surf->base.Width;
 396    *height = dri2_surf->base.Height;
 397
 398    return dri2_surf->buffers;
 399 }
 400
 401 static __DRIbuffer *
 402 dri2_get_buffers(__DRIdrawable * driDrawable,
 403                  int *width, int *height,
 404                  unsigned int *attachments, int count,
 405                  int *out_count, void *loaderPrivate)
 406 {
 407    unsigned int *attachments_with_format;
 408    __DRIbuffer *buffer;
 409    const unsigned int format = 32;
 410    int i;
 411
 412    attachments_with_format = calloc(count * 2, sizeof(unsigned int));
 413    if (!attachments_with_format) {
 414       *out_count = 0;
 415       return NULL;
 416    }
 417
 418    for (i = 0; i < count; ++i) {
 419       attachments_with_format[2*i] = attachments[i];
 420       attachments_with_format[2*i + 1] = format;
 421    }
 422
 423    buffer =
 424       dri2_get_buffers_with_format(driDrawable,
 425                                    width, height,
 426                                    attachments_with_format, count,
 427                                    out_count, loaderPrivate);
 428
 429    free(attachments_with_format);
 430
 431    return buffer;
 432 }
 433
 434 static void
 435 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 436 {
 437    (void) driDrawable;
 438    (void) loaderPrivate;
 439 }
 440
 441 static void
 442 wayland_frame_callback(void *data, struct wl_callback *callback, uint32_t time)
 443 {
 444    struct dri2_egl_surface *dri2_surf = data;
 445
 446    dri2_surf->frame_callback = NULL;
 447    wl_callback_destroy(callback);
 448 }
 449
 450 static const struct wl_callback_listener frame_listener = {
 451         wayland_frame_callback
 452 };
 453
 454 /**
 455  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 456  */
 457 static EGLBoolean
 458 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 459 {
 460    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 461    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 462    __DRIbuffer buffer;
 463    int i, ret = 0;
 464
 465    while (dri2_surf->frame_callback && ret != -1)
 466       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 467    if (ret < 0)
 468       return EGL_FALSE;
 469
 470    dri2_surf->frame_callback = wl_surface_frame(dri2_surf->wl_win->surface);
 471    wl_callback_add_listener(dri2_surf->frame_callback,
 472                             &frame_listener, dri2_surf);
 473    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->frame_callback,
 474                       dri2_dpy->wl_queue);
 475
 476    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 477       if (dri2_surf->color_buffers[i].age > 0)
 478          dri2_surf->color_buffers[i].age++;
 479
 480    /* Make sure we have a back buffer in case we're swapping without ever
 481     * rendering. */
 482    if (get_back_bo(dri2_surf, &buffer) < 0) {
 483       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 484       return EGL_FALSE;
 485    }
 486
 487    dri2_surf->back->age = 1;
 488    dri2_surf->current = dri2_surf->back;
 489    dri2_surf->back = NULL;
 490
 491    if (dri2_surf->current->wl_buffer == NULL) {
 492       dri2_surf->current->wl_buffer =
 493          wl_drm_create_buffer(dri2_dpy->wl_drm,
 494                               dri2_surf->current->name,
 495                               dri2_surf->base.Width,
 496                               dri2_surf->base.Height,
 497                               dri2_surf->current->pitch,
 498                               dri2_surf->format);
 499       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 500                          dri2_dpy->wl_queue);
 501       wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 502                              &wl_buffer_listener, dri2_surf);
 503    }
 504
 505    wl_surface_attach(dri2_surf->wl_win->surface,
 506                      dri2_surf->current->wl_buffer,
 507                      dri2_surf->dx, dri2_surf->dy);
 508
 509    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 510    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 511    /* reset resize growing parameters */
 512    dri2_surf->dx = 0;
 513    dri2_surf->dy = 0;
 514
 515    wl_surface_damage(dri2_surf->wl_win->surface, 0, 0,
 516                      dri2_surf->base.Width, dri2_surf->base.Height);
 517
 518    wl_surface_commit(dri2_surf->wl_win->surface);
 519
 520    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 521    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 522
 523    return EGL_TRUE;
 524 }
 525
 526 static EGLint
 527 dri2_query_buffer_age(_EGLDriver *drv,
 528                       _EGLDisplay *disp, _EGLSurface *surface)
 529 {
 530    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 531    __DRIbuffer buffer;
 532
 533    if (get_back_bo(dri2_surf, &buffer) < 0) {
 534       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 535       return 0;
 536    }
 537
 538    return dri2_surf->back->age;
 539 }
 540
 541 static int
 542 dri2_wayland_authenticate(_EGLDisplay *disp, uint32_t id)
 543 {
 544    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 545    int ret = 0;
 546
 547    dri2_dpy->authenticated = 0;
 548
 549    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 550    if (roundtrip(dri2_dpy) < 0)
 551       ret = -1;
 552
 553    if (!dri2_dpy->authenticated)
 554       ret = -1;
 555
 556    /* reset authenticated */
 557    dri2_dpy->authenticated = 1;
 558
 559    return ret;
 560 }
 561
 562 /**
 563  * Called via eglTerminate(), drv->API.Terminate().
 564  */
 565 static EGLBoolean
 566 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 567 {
 568    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 569
 570    _eglReleaseDisplayResources(drv, disp);
 571    _eglCleanupDisplay(disp);
 572
 573    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 574    close(dri2_dpy->fd);
 575    dlclose(dri2_dpy->driver);
 576    free(dri2_dpy->driver_name);
 577    free(dri2_dpy->device_name);
 578    wl_drm_destroy(dri2_dpy->wl_drm);
 579    if (dri2_dpy->own_device)
 580       wl_display_disconnect(dri2_dpy->wl_dpy);
 581    free(dri2_dpy);
 582    disp->DriverData = NULL;
 583
 584    return EGL_TRUE;
 585 }
 586
 587 static void
 588 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 589 {
 590    struct dri2_egl_display *dri2_dpy = data;
 591    drm_magic_t magic;
 592
 593    dri2_dpy->device_name = strdup(device);
 594    if (!dri2_dpy->device_name)
 595       return;
 596
 597 #ifdef O_CLOEXEC
 598    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 599    if (dri2_dpy->fd == -1 && errno == EINVAL)
 600 #endif
 601    {
 602       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 603       if (dri2_dpy->fd != -1)
 604          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 605             FD_CLOEXEC);
 606    }
 607    if (dri2_dpy->fd == -1) {
 608       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 609               dri2_dpy->device_name, strerror(errno));
 610       return;
 611    }
 612
 613    drmGetMagic(dri2_dpy->fd, &magic);
 614    wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 615 }
 616
 617 static void
 618 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 619 {
 620    struct dri2_egl_display *dri2_dpy = data;
 621
 622    switch (format) {
 623    case WL_DRM_FORMAT_ARGB8888:
 624       dri2_dpy->formats |= HAS_ARGB8888;
 625       break;
 626    case WL_DRM_FORMAT_XRGB8888:
 627       dri2_dpy->formats |= HAS_XRGB8888;
 628       break;
 629    }
 630 }
 631
 632 static void
 633 drm_handle_authenticated(void *data, struct wl_drm *drm)
 634 {
 635    struct dri2_egl_display *dri2_dpy = data;
 636
 637    dri2_dpy->authenticated = 1;
 638 }
 639
 640 static const struct wl_drm_listener drm_listener = {
 641         drm_handle_device,
 642         drm_handle_format,
 643         drm_handle_authenticated
 644 };
 645
 646 static void
 647 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 648                        const char *interface, uint32_t version)
 649 {
 650    struct dri2_egl_display *dri2_dpy = data;
 651
 652    if (strcmp(interface, "wl_drm") == 0) {
 653       dri2_dpy->wl_drm =
 654          wl_registry_bind(registry, name, &wl_drm_interface, 1);
 655       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 656    }
 657 }
 658
 659 static const struct wl_registry_listener registry_listener = {
 660         registry_handle_global
 661 };
 662
 663 EGLBoolean
 664 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
 665 {
 666    struct dri2_egl_display *dri2_dpy;
 667    const __DRIconfig *config;
 668    uint32_t types;
 669    int i;
 670    static const unsigned int argb_masks[4] =
 671       { 0xff0000, 0xff00, 0xff, 0xff000000 };
 672    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
 673
 674    drv->API.CreateWindowSurface = dri2_create_window_surface;
 675    drv->API.DestroySurface = dri2_destroy_surface;
 676    drv->API.SwapBuffers = dri2_swap_buffers;
 677    drv->API.Terminate = dri2_terminate;
 678    drv->API.QueryBufferAge = dri2_query_buffer_age;
 679
 680    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 681    if (!dri2_dpy)
 682       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 683
 684    disp->DriverData = (void *) dri2_dpy;
 685    if (disp->PlatformDisplay == NULL) {
 686       dri2_dpy->wl_dpy = wl_display_connect(NULL);
 687       if (dri2_dpy->wl_dpy == NULL)
 688          goto cleanup_dpy;
 689       dri2_dpy->own_device = 1;
 690    } else {
 691       dri2_dpy->wl_dpy = disp->PlatformDisplay;
 692    }
 693
 694    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 695
 696    if (dri2_dpy->own_device)
 697       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
 698
 699    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
 700    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
 701                       dri2_dpy->wl_queue);
 702    wl_registry_add_listener(dri2_dpy->wl_registry,
 703                             &registry_listener, dri2_dpy);
 704    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
 705       goto cleanup_dpy;
 706
 707    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
 708       goto cleanup_drm;
 709
 710    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
 711       goto cleanup_fd;
 712
 713    dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
 714    if (dri2_dpy->driver_name == NULL) {
 715       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
 716       goto cleanup_fd;
 717    }
 718
 719    if (!dri2_load_driver(disp))
 720       goto cleanup_driver_name;
 721
 722    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 723    dri2_dpy->dri2_loader_extension.base.version = 3;
 724    dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
 725    dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 726    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 727       dri2_get_buffers_with_format;
 728
 729    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 730    dri2_dpy->extensions[1] = &image_lookup_extension.base;
 731    dri2_dpy->extensions[2] = &use_invalidate.base;
 732    dri2_dpy->extensions[3] = NULL;
 733
 734    if (!dri2_create_screen(disp))
 735       goto cleanup_driver;
 736
 737    types = EGL_WINDOW_BIT;
 738    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
 739       config = dri2_dpy->driver_configs[i];
 740       if (dri2_dpy->formats & HAS_XRGB8888)
 741          dri2_add_config(disp, config, i + 1, 0, types, NULL, rgb_masks);
 742       if (dri2_dpy->formats & HAS_ARGB8888)
 743          dri2_add_config(disp, config, i + 1, 0, types, NULL, argb_masks);
 744    }
 745
 746    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
 747    disp->Extensions.EXT_buffer_age = EGL_TRUE;
 748    dri2_dpy->authenticate = dri2_wayland_authenticate;
 749
 750    /* we're supporting EGL 1.4 */
 751    disp->VersionMajor = 1;
 752    disp->VersionMinor = 4;
 753
 754    return EGL_TRUE;
 755
 756  cleanup_driver:
 757    dlclose(dri2_dpy->driver);
 758  cleanup_driver_name:
 759    free(dri2_dpy->driver_name);
 760  cleanup_fd:
 761    close(dri2_dpy->fd);
 762  cleanup_drm:
 763    free(dri2_dpy->device_name);
 764    wl_drm_destroy(dri2_dpy->wl_drm);
 765  cleanup_dpy:
 766    free(dri2_dpy);
 767
 768    return EGL_FALSE;
 769 }