src/egl/drivers/dri2/platform_wayland.c

   1 /*
   2  * Copyright © 2011-2012 Intel Corporation
   3  * Copyright © 2012 Collabora, Ltd.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  20  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Kristian Høgsberg <krh@bitplanet.net>
  27  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  28  */
  29
  30 #include <stdint.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <limits.h>
  34 #include <dlfcn.h>
  35 #include <errno.h>
  36 #include <unistd.h>
  37 #include <fcntl.h>
  38 #include <xf86drm.h>
  39 #include <sys/mman.h>
  40
  41 #include "egl_dri2.h"
  42 #include "egl_dri2_fallbacks.h"
  43 #include "loader.h"
  44
  45 #include <wayland-client.h>
  46 #include "wayland-drm-client-protocol.h"
  47
  48 enum wl_drm_format_flags {
  49    HAS_ARGB8888 = 1,
  50    HAS_XRGB8888 = 2,
  51    HAS_RGB565 = 4,
  52 };
  53
  54 static EGLBoolean
  55 dri2_wl_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  56                       EGLint interval);
  57
  58 static void
  59 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  60 {
  61    int *done = data;
  62
  63    *done = 1;
  64    wl_callback_destroy(callback);
  65 }
  66
  67 static const struct wl_callback_listener sync_listener = {
  68    .done = sync_callback
  69 };
  70
  71 static int
  72 roundtrip(struct dri2_egl_display *dri2_dpy)
  73 {
  74    struct wl_callback *callback;
  75    int done = 0, ret = 0;
  76
  77    callback = wl_display_sync(dri2_dpy->wl_dpy);
  78    wl_callback_add_listener(callback, &sync_listener, &done);
  79    wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
  80    while (ret != -1 && !done)
  81       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  82
  83    if (!done)
  84       wl_callback_destroy(callback);
  85
  86    return ret;
  87 }
  88
  89 static void
  90 wl_buffer_release(void *data, struct wl_buffer *buffer)
  91 {
  92    struct dri2_egl_surface *dri2_surf = data;
  93    int i;
  94
  95    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  96       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  97          break;
  98
  99    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
 100       wl_buffer_destroy(buffer);
 101       return;
 102    }
 103
 104    dri2_surf->color_buffers[i].locked = 0;
 105 }
 106
 107 static const struct wl_buffer_listener wl_buffer_listener = {
 108    .release = wl_buffer_release
 109 };
 110
 111 static void
 112 resize_callback(struct wl_egl_window *wl_win, void *data)
 113 {
 114    struct dri2_egl_surface *dri2_surf = data;
 115    struct dri2_egl_display *dri2_dpy =
 116       dri2_egl_display(dri2_surf->base.Resource.Display);
 117
 118    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 119 }
 120
 121 /**
 122  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 123  */
 124 static _EGLSurface *
 125 dri2_wl_create_surface(_EGLDriver *drv, _EGLDisplay *disp,
 126                        _EGLConfig *conf, void *native_window,
 127                        const EGLint *attrib_list)
 128 {
 129    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 130    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 131    struct wl_egl_window *window = native_window;
 132    struct dri2_egl_surface *dri2_surf;
 133    const __DRIconfig *config;
 134
 135    (void) drv;
 136
 137    dri2_surf = calloc(1, sizeof *dri2_surf);
 138    if (!dri2_surf) {
 139       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 140       return NULL;
 141    }
 142
 143    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 144       goto cleanup_surf;
 145
 146    if (conf->RedSize == 5)
 147       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 148    else if (conf->AlphaSize == 0)
 149       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 150    else
 151       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 152
 153    if (!window) {
 154       _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 155       goto cleanup_surf;
 156    }
 157
 158    dri2_surf->wl_win = window;
 159
 160    dri2_surf->wl_win->private = dri2_surf;
 161    dri2_surf->wl_win->resize_callback = resize_callback;
 162
 163    dri2_surf->base.Width =  -1;
 164    dri2_surf->base.Height = -1;
 165
 166    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 167                                 dri2_surf->base.GLColorspace);
 168
 169    dri2_surf->dri_drawable =
 170       (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen, config,
 171                                            dri2_surf);
 172    if (dri2_surf->dri_drawable == NULL) {
 173       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 174       goto cleanup_surf;
 175    }
 176
 177    return &dri2_surf->base;
 178
 179  cleanup_surf:
 180    free(dri2_surf);
 181
 182    return NULL;
 183 }
 184
 185 /**
 186  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 187  */
 188 static _EGLSurface *
 189 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 190                               _EGLConfig *conf, void *native_window,
 191                               const EGLint *attrib_list)
 192 {
 193    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 194    _EGLSurface *surf;
 195
 196    surf = dri2_wl_create_surface(drv, disp, conf, native_window, attrib_list);
 197
 198    if (surf != NULL)
 199       dri2_wl_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 200
 201    return surf;
 202 }
 203
 204 static _EGLSurface *
 205 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 206                               _EGLConfig *conf, void *native_window,
 207                               const EGLint *attrib_list)
 208 {
 209    /* From the EGL_EXT_platform_wayland spec, version 3:
 210     *
 211     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 212     *   that belongs to Wayland. Any such call fails and generates
 213     *   EGL_BAD_PARAMETER.
 214     */
 215    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 216              "Wayland");
 217    return NULL;
 218 }
 219
 220 /**
 221  * Called via eglDestroySurface(), drv->API.DestroySurface().
 222  */
 223 static EGLBoolean
 224 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 225 {
 226    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 227    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 228    int i;
 229
 230    (void) drv;
 231
 232    if (!_eglPutSurface(surf))
 233       return EGL_TRUE;
 234
 235    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 236
 237    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 238       if (dri2_surf->color_buffers[i].wl_buffer)
 239          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 240       if (dri2_surf->color_buffers[i].dri_image)
 241          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 242       if (dri2_surf->color_buffers[i].linear_copy)
 243          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 244       if (dri2_surf->color_buffers[i].data)
 245          munmap(dri2_surf->color_buffers[i].data,
 246                 dri2_surf->color_buffers[i].data_size);
 247    }
 248
 249    if (dri2_dpy->dri2) {
 250       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 251          if (dri2_surf->dri_buffers[i] &&
 252              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 253             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 254                                           dri2_surf->dri_buffers[i]);
 255    }
 256
 257    if (dri2_surf->throttle_callback)
 258       wl_callback_destroy(dri2_surf->throttle_callback);
 259
 260    dri2_surf->wl_win->private = NULL;
 261    dri2_surf->wl_win->resize_callback = NULL;
 262
 263    free(surf);
 264
 265    return EGL_TRUE;
 266 }
 267
 268 static void
 269 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 270 {
 271    struct dri2_egl_display *dri2_dpy =
 272       dri2_egl_display(dri2_surf->base.Resource.Display);
 273    int i;
 274
 275    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 276       if (dri2_surf->color_buffers[i].wl_buffer &&
 277           !dri2_surf->color_buffers[i].locked)
 278          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 279       if (dri2_surf->color_buffers[i].dri_image)
 280          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 281       if (dri2_surf->color_buffers[i].linear_copy)
 282          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 283       if (dri2_surf->color_buffers[i].data)
 284          munmap(dri2_surf->color_buffers[i].data,
 285                 dri2_surf->color_buffers[i].data_size);
 286
 287       dri2_surf->color_buffers[i].wl_buffer = NULL;
 288       dri2_surf->color_buffers[i].dri_image = NULL;
 289       dri2_surf->color_buffers[i].linear_copy = NULL;
 290       dri2_surf->color_buffers[i].data = NULL;
 291       dri2_surf->color_buffers[i].locked = 0;
 292    }
 293
 294    if (dri2_dpy->dri2) {
 295       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 296          if (dri2_surf->dri_buffers[i] &&
 297              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 298             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 299                                           dri2_surf->dri_buffers[i]);
 300    }
 301 }
 302
 303 static int
 304 get_back_bo(struct dri2_egl_surface *dri2_surf)
 305 {
 306    struct dri2_egl_display *dri2_dpy =
 307       dri2_egl_display(dri2_surf->base.Resource.Display);
 308    int i;
 309    unsigned int dri_image_format;
 310
 311    /* currently supports three WL DRM formats,
 312     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 313     * and WL_DRM_FORMAT_RGB565
 314     */
 315    switch (dri2_surf->format) {
 316    case WL_DRM_FORMAT_ARGB8888:
 317       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 318       break;
 319    case WL_DRM_FORMAT_XRGB8888:
 320       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 321       break;
 322    case WL_DRM_FORMAT_RGB565:
 323       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 324       break;
 325    default:
 326       /* format is not supported */
 327       return -1;
 328    }
 329
 330    /* We always want to throttle to some event (either a frame callback or
 331     * a sync request) after the commit so that we can be sure the
 332     * compositor has had a chance to handle it and send us a release event
 333     * before we look for a free buffer */
 334    while (dri2_surf->throttle_callback != NULL)
 335       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 336                                     dri2_dpy->wl_queue) == -1)
 337          return -1;
 338
 339    if (dri2_surf->back == NULL) {
 340       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 341          /* Get an unlocked buffer, preferrably one with a dri_buffer
 342           * already allocated. */
 343          if (dri2_surf->color_buffers[i].locked)
 344             continue;
 345          if (dri2_surf->back == NULL)
 346             dri2_surf->back = &dri2_surf->color_buffers[i];
 347          else if (dri2_surf->back->dri_image == NULL)
 348             dri2_surf->back = &dri2_surf->color_buffers[i];
 349       }
 350    }
 351
 352    if (dri2_surf->back == NULL)
 353       return -1;
 354
 355    if (dri2_dpy->is_different_gpu &&
 356        dri2_surf->back->linear_copy == NULL) {
 357        dri2_surf->back->linear_copy =
 358           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 359                                       dri2_surf->base.Width,
 360                                       dri2_surf->base.Height,
 361                                       dri_image_format,
 362                                       __DRI_IMAGE_USE_SHARE |
 363                                       __DRI_IMAGE_USE_LINEAR,
 364                                       NULL);
 365       if (dri2_surf->back->linear_copy == NULL)
 366           return -1;
 367    }
 368
 369    if (dri2_surf->back->dri_image == NULL) {
 370       dri2_surf->back->dri_image =
 371          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 372                                       dri2_surf->base.Width,
 373                                       dri2_surf->base.Height,
 374                                       dri_image_format,
 375                                       dri2_dpy->is_different_gpu ?
 376                                          0 : __DRI_IMAGE_USE_SHARE,
 377                                       NULL);
 378       dri2_surf->back->age = 0;
 379    }
 380    if (dri2_surf->back->dri_image == NULL)
 381       return -1;
 382
 383    dri2_surf->back->locked = 1;
 384
 385    return 0;
 386 }
 387
 388
 389 static void
 390 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 391 {
 392    struct dri2_egl_display *dri2_dpy =
 393       dri2_egl_display(dri2_surf->base.Resource.Display);
 394    __DRIimage *image;
 395    int name, pitch;
 396
 397    image = dri2_surf->back->dri_image;
 398
 399    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 400    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 401
 402    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 403    buffer->name = name;
 404    buffer->pitch = pitch;
 405    buffer->cpp = 4;
 406    buffer->flags = 0;
 407 }
 408
 409 static int
 410 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 411            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 412 {
 413    struct dri2_egl_display *dri2_dpy =
 414       dri2_egl_display(dri2_surf->base.Resource.Display);
 415    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 416
 417    if (b == NULL) {
 418       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 419                                          attachment, format,
 420                                          dri2_surf->base.Width,
 421                                          dri2_surf->base.Height);
 422       dri2_surf->dri_buffers[attachment] = b;
 423    }
 424    if (b == NULL)
 425       return -1;
 426
 427    memcpy(buffer, b, sizeof *buffer);
 428
 429    return 0;
 430 }
 431
 432 static int
 433 update_buffers(struct dri2_egl_surface *dri2_surf)
 434 {
 435    struct dri2_egl_display *dri2_dpy =
 436       dri2_egl_display(dri2_surf->base.Resource.Display);
 437    int i;
 438
 439    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 440        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 441
 442       dri2_wl_release_buffers(dri2_surf);
 443
 444       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 445       dri2_surf->base.Height = dri2_surf->wl_win->height;
 446       dri2_surf->dx = dri2_surf->wl_win->dx;
 447       dri2_surf->dy = dri2_surf->wl_win->dy;
 448    }
 449
 450    if (get_back_bo(dri2_surf) < 0) {
 451       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 452       return -1;
 453    }
 454
 455    /* If we have an extra unlocked buffer at this point, we had to do triple
 456     * buffering for a while, but now can go back to just double buffering.
 457     * That means we can free any unlocked buffer now. */
 458    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 459       if (!dri2_surf->color_buffers[i].locked &&
 460           dri2_surf->color_buffers[i].wl_buffer) {
 461          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 462          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 463          if (dri2_dpy->is_different_gpu)
 464             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 465          dri2_surf->color_buffers[i].wl_buffer = NULL;
 466          dri2_surf->color_buffers[i].dri_image = NULL;
 467          dri2_surf->color_buffers[i].linear_copy = NULL;
 468       }
 469    }
 470
 471    return 0;
 472 }
 473
 474 static __DRIbuffer *
 475 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 476                                 int *width, int *height,
 477                                 unsigned int *attachments, int count,
 478                                 int *out_count, void *loaderPrivate)
 479 {
 480    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 481    int i, j;
 482
 483    if (update_buffers(dri2_surf) < 0)
 484       return NULL;
 485
 486    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 487       switch (attachments[i]) {
 488       case __DRI_BUFFER_BACK_LEFT:
 489          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 490          break;
 491       default:
 492          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 493                         &dri2_surf->buffers[j]) < 0) {
 494             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 495             return NULL;
 496          }
 497          break;
 498       }
 499    }
 500
 501    *out_count = j;
 502    if (j == 0)
 503            return NULL;
 504
 505    *width = dri2_surf->base.Width;
 506    *height = dri2_surf->base.Height;
 507
 508    return dri2_surf->buffers;
 509 }
 510
 511 static __DRIbuffer *
 512 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 513                     int *width, int *height,
 514                     unsigned int *attachments, int count,
 515                     int *out_count, void *loaderPrivate)
 516 {
 517    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 518    unsigned int *attachments_with_format;
 519    __DRIbuffer *buffer;
 520    unsigned int bpp;
 521
 522    int i;
 523
 524    switch (dri2_surf->format) {
 525    case WL_DRM_FORMAT_ARGB8888:
 526    case WL_DRM_FORMAT_XRGB8888:
 527       bpp = 32;
 528       break;
 529    case WL_DRM_FORMAT_RGB565:
 530       bpp = 16;
 531       break;
 532    default:
 533       /* format is not supported */
 534       return NULL;
 535    }
 536
 537    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 538    if (!attachments_with_format) {
 539       *out_count = 0;
 540       return NULL;
 541    }
 542
 543    for (i = 0; i < count; ++i) {
 544       attachments_with_format[2*i] = attachments[i];
 545       attachments_with_format[2*i + 1] = bpp;
 546    }
 547
 548    buffer =
 549       dri2_wl_get_buffers_with_format(driDrawable,
 550                                       width, height,
 551                                       attachments_with_format, count,
 552                                       out_count, loaderPrivate);
 553
 554    free(attachments_with_format);
 555
 556    return buffer;
 557 }
 558
 559 static int
 560 image_get_buffers(__DRIdrawable *driDrawable,
 561                   unsigned int format,
 562                   uint32_t *stamp,
 563                   void *loaderPrivate,
 564                   uint32_t buffer_mask,
 565                   struct __DRIimageList *buffers)
 566 {
 567    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 568
 569    if (update_buffers(dri2_surf) < 0)
 570       return 0;
 571
 572    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 573    buffers->back = dri2_surf->back->dri_image;
 574
 575    return 1;
 576 }
 577
 578 static void
 579 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 580 {
 581    (void) driDrawable;
 582    (void) loaderPrivate;
 583 }
 584
 585 static const __DRIimageLoaderExtension image_loader_extension = {
 586    .base = { __DRI_IMAGE_LOADER, 1 },
 587
 588    .getBuffers          = image_get_buffers,
 589    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 590 };
 591
 592 static void
 593 wayland_throttle_callback(void *data,
 594                           struct wl_callback *callback,
 595                           uint32_t time)
 596 {
 597    struct dri2_egl_surface *dri2_surf = data;
 598
 599    dri2_surf->throttle_callback = NULL;
 600    wl_callback_destroy(callback);
 601 }
 602
 603 static const struct wl_callback_listener throttle_listener = {
 604    .done = wayland_throttle_callback
 605 };
 606
 607 static void
 608 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 609 {
 610    struct dri2_egl_display *dri2_dpy =
 611       dri2_egl_display(dri2_surf->base.Resource.Display);
 612    __DRIimage *image;
 613    int fd, stride, name;
 614
 615    if (dri2_surf->current->wl_buffer != NULL)
 616       return;
 617
 618    if (dri2_dpy->is_different_gpu) {
 619       image = dri2_surf->current->linear_copy;
 620    } else {
 621       image = dri2_surf->current->dri_image;
 622    }
 623    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 624       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 625       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 626
 627       dri2_surf->current->wl_buffer =
 628          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 629                                     fd,
 630                                     dri2_surf->base.Width,
 631                                     dri2_surf->base.Height,
 632                                     dri2_surf->format,
 633                                     0, stride,
 634                                     0, 0,
 635                                     0, 0);
 636       close(fd);
 637    } else {
 638       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 639       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 640
 641       dri2_surf->current->wl_buffer =
 642          wl_drm_create_buffer(dri2_dpy->wl_drm,
 643                               name,
 644                               dri2_surf->base.Width,
 645                               dri2_surf->base.Height,
 646                               stride,
 647                               dri2_surf->format);
 648    }
 649
 650    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 651                       dri2_dpy->wl_queue);
 652    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 653                           &wl_buffer_listener, dri2_surf);
 654 }
 655
 656 static EGLBoolean
 657 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 658                   const EGLint *rects,
 659                   EGLint n_rects)
 660 {
 661 /* The WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION macro and
 662  * wl_proxy_get_version() were both introduced in wayland 1.10.
 663  * Instead of bumping our wayland dependency we just make this
 664  * function conditional on the required 1.10 features, falling
 665  * back to old (correct but suboptimal) behaviour for older
 666  * wayland.
 667  */
 668 #ifdef WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION
 669    int i;
 670
 671    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_win->surface)
 672        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 673       return EGL_FALSE;
 674
 675    for (i = 0; i < n_rects; i++) {
 676       const int *rect = &rects[i * 4];
 677
 678       wl_surface_damage_buffer(dri2_surf->wl_win->surface,
 679                                rect[0],
 680                                dri2_surf->base.Height - rect[1] - rect[3],
 681                                rect[2], rect[3]);
 682    }
 683    return EGL_TRUE;
 684 #endif
 685    return EGL_FALSE;
 686 }
 687 /**
 688  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 689  */
 690 static EGLBoolean
 691 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 692                                  _EGLDisplay *disp,
 693                                  _EGLSurface *draw,
 694                                  const EGLint *rects,
 695                                  EGLint n_rects)
 696 {
 697    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 698    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 699    int i;
 700
 701    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 702       if (dri2_surf->color_buffers[i].age > 0)
 703          dri2_surf->color_buffers[i].age++;
 704
 705    /* Make sure we have a back buffer in case we're swapping without ever
 706     * rendering. */
 707    if (get_back_bo(dri2_surf) < 0) {
 708       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 709       return EGL_FALSE;
 710    }
 711
 712    if (draw->SwapInterval > 0) {
 713       dri2_surf->throttle_callback =
 714          wl_surface_frame(dri2_surf->wl_win->surface);
 715       wl_callback_add_listener(dri2_surf->throttle_callback,
 716                                &throttle_listener, dri2_surf);
 717       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 718                          dri2_dpy->wl_queue);
 719    }
 720
 721    dri2_surf->back->age = 1;
 722    dri2_surf->current = dri2_surf->back;
 723    dri2_surf->back = NULL;
 724
 725    create_wl_buffer(dri2_surf);
 726
 727    wl_surface_attach(dri2_surf->wl_win->surface,
 728                      dri2_surf->current->wl_buffer,
 729                      dri2_surf->dx, dri2_surf->dy);
 730
 731    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 732    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 733    /* reset resize growing parameters */
 734    dri2_surf->dx = 0;
 735    dri2_surf->dy = 0;
 736
 737    /* If the compositor doesn't support damage_buffer, we deliberately
 738     * ignore the damage region and post maximum damage, due to
 739     * https://bugs.freedesktop.org/78190 */
 740    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 741       wl_surface_damage(dri2_surf->wl_win->surface,
 742                         0, 0, INT32_MAX, INT32_MAX);
 743
 744    if (dri2_dpy->is_different_gpu) {
 745       _EGLContext *ctx = _eglGetCurrentContext();
 746       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 747       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 748                                  dri2_surf->current->linear_copy,
 749                                  dri2_surf->current->dri_image,
 750                                  0, 0, dri2_surf->base.Width,
 751                                  dri2_surf->base.Height,
 752                                  0, 0, dri2_surf->base.Width,
 753                                  dri2_surf->base.Height, 0);
 754    }
 755
 756    dri2_flush_drawable_for_swapbuffers(disp, draw);
 757    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 758
 759    wl_surface_commit(dri2_surf->wl_win->surface);
 760
 761    /* If we're not waiting for a frame callback then we'll at least throttle
 762     * to a sync callback so that we always give a chance for the compositor to
 763     * handle the commit and send a release event before checking for a free
 764     * buffer */
 765    if (dri2_surf->throttle_callback == NULL) {
 766       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
 767       wl_callback_add_listener(dri2_surf->throttle_callback,
 768                                &throttle_listener, dri2_surf);
 769       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 770                          dri2_dpy->wl_queue);
 771    }
 772
 773    wl_display_flush(dri2_dpy->wl_dpy);
 774
 775    return EGL_TRUE;
 776 }
 777
 778 static EGLint
 779 dri2_wl_query_buffer_age(_EGLDriver *drv,
 780                          _EGLDisplay *disp, _EGLSurface *surface)
 781 {
 782    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 783
 784    if (get_back_bo(dri2_surf) < 0) {
 785       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 786       return 0;
 787    }
 788
 789    return dri2_surf->back->age;
 790 }
 791
 792 static EGLBoolean
 793 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 794 {
 795    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 796 }
 797
 798 static struct wl_buffer *
 799 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 800                                           _EGLDisplay *disp,
 801                                           _EGLImage *img)
 802 {
 803    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 804    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 805    __DRIimage *image = dri2_img->dri_image;
 806    struct wl_buffer *buffer;
 807    int width, height, format, pitch;
 808    enum wl_drm_format wl_format;
 809
 810    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 811
 812    switch (format) {
 813    case __DRI_IMAGE_FORMAT_ARGB8888:
 814       if (!(dri2_dpy->formats & HAS_ARGB8888))
 815          goto bad_format;
 816       wl_format = WL_DRM_FORMAT_ARGB8888;
 817       break;
 818    case __DRI_IMAGE_FORMAT_XRGB8888:
 819       if (!(dri2_dpy->formats & HAS_XRGB8888))
 820          goto bad_format;
 821       wl_format = WL_DRM_FORMAT_XRGB8888;
 822       break;
 823    default:
 824       goto bad_format;
 825    }
 826
 827    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 828    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 829    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 830
 831    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 832       int fd;
 833
 834       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 835
 836       buffer =
 837          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 838                                     fd,
 839                                     width, height,
 840                                     wl_format,
 841                                     0, pitch,
 842                                     0, 0,
 843                                     0, 0);
 844
 845       close(fd);
 846    } else {
 847       int name;
 848
 849       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 850
 851       buffer =
 852          wl_drm_create_buffer(dri2_dpy->wl_drm,
 853                               name,
 854                               width, height,
 855                               pitch,
 856                               wl_format);
 857    }
 858
 859    /* The buffer object will have been created with our internal event queue
 860     * because it is using the wl_drm object as a proxy factory. We want the
 861     * buffer to be used by the application so we'll reset it to the display's
 862     * default event queue */
 863    if (buffer)
 864       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 865
 866    return buffer;
 867
 868 bad_format:
 869    _eglError(EGL_BAD_MATCH, "unsupported image format");
 870    return NULL;
 871 }
 872
 873 static int
 874 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 875 {
 876    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 877    int ret = 0;
 878
 879    if (dri2_dpy->is_render_node) {
 880       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 881                             "authenticate for render-nodes");
 882       return 0;
 883    }
 884    dri2_dpy->authenticated = 0;
 885
 886    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 887    if (roundtrip(dri2_dpy) < 0)
 888       ret = -1;
 889
 890    if (!dri2_dpy->authenticated)
 891       ret = -1;
 892
 893    /* reset authenticated */
 894    dri2_dpy->authenticated = 1;
 895
 896    return ret;
 897 }
 898
 899 static void
 900 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 901 {
 902    struct dri2_egl_display *dri2_dpy = data;
 903    drm_magic_t magic;
 904
 905    dri2_dpy->device_name = strdup(device);
 906    if (!dri2_dpy->device_name)
 907       return;
 908
 909    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 910    if (dri2_dpy->fd == -1) {
 911       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 912               dri2_dpy->device_name, strerror(errno));
 913       return;
 914    }
 915
 916    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 917       dri2_dpy->authenticated = 1;
 918    } else {
 919       drmGetMagic(dri2_dpy->fd, &magic);
 920       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 921    }
 922 }
 923
 924 static void
 925 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 926 {
 927    struct dri2_egl_display *dri2_dpy = data;
 928
 929    switch (format) {
 930    case WL_DRM_FORMAT_ARGB8888:
 931       dri2_dpy->formats |= HAS_ARGB8888;
 932       break;
 933    case WL_DRM_FORMAT_XRGB8888:
 934       dri2_dpy->formats |= HAS_XRGB8888;
 935       break;
 936    case WL_DRM_FORMAT_RGB565:
 937       dri2_dpy->formats |= HAS_RGB565;
 938       break;
 939    }
 940 }
 941
 942 static void
 943 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 944 {
 945    struct dri2_egl_display *dri2_dpy = data;
 946
 947    dri2_dpy->capabilities = value;
 948 }
 949
 950 static void
 951 drm_handle_authenticated(void *data, struct wl_drm *drm)
 952 {
 953    struct dri2_egl_display *dri2_dpy = data;
 954
 955    dri2_dpy->authenticated = 1;
 956 }
 957
 958 static const struct wl_drm_listener drm_listener = {
 959    .device = drm_handle_device,
 960    .format = drm_handle_format,
 961    .authenticated = drm_handle_authenticated,
 962    .capabilities = drm_handle_capabilities
 963 };
 964
 965 static void
 966 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 967                        const char *interface, uint32_t version)
 968 {
 969    struct dri2_egl_display *dri2_dpy = data;
 970
 971    if (version > 1)
 972       version = 2;
 973    if (strcmp(interface, "wl_drm") == 0) {
 974       dri2_dpy->wl_drm =
 975          wl_registry_bind(registry, name, &wl_drm_interface, version);
 976       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 977    }
 978 }
 979
 980 static void
 981 registry_handle_global_remove(void *data, struct wl_registry *registry,
 982                               uint32_t name)
 983 {
 984 }
 985
 986 static const struct wl_registry_listener registry_listener_drm = {
 987    .global = registry_handle_global_drm,
 988    .global_remove = registry_handle_global_remove
 989 };
 990
 991 static EGLBoolean
 992 dri2_wl_swap_interval(_EGLDriver *drv,
 993                    _EGLDisplay *disp,
 994                    _EGLSurface *surf,
 995                    EGLint interval)
 996 {
 997    if (interval > surf->Config->MaxSwapInterval)
 998       interval = surf->Config->MaxSwapInterval;
 999    else if (interval < surf->Config->MinSwapInterval)
1000       interval = surf->Config->MinSwapInterval;
1001
1002    surf->SwapInterval = interval;
1003
1004    return EGL_TRUE;
1005 }
1006
1007 static void
1008 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1009 {
1010    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1011
1012    /* We can't use values greater than 1 on Wayland because we are using the
1013     * frame callback to synchronise the frame and the only way we be sure to
1014     * get a frame callback is to attach a new buffer. Therefore we can't just
1015     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1016
1017    if (dri2_dpy->config)
1018       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1019                                      "vblank_mode", &vblank_mode);
1020    switch (vblank_mode) {
1021    case DRI_CONF_VBLANK_NEVER:
1022       dri2_dpy->min_swap_interval = 0;
1023       dri2_dpy->max_swap_interval = 0;
1024       dri2_dpy->default_swap_interval = 0;
1025       break;
1026    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1027       dri2_dpy->min_swap_interval = 1;
1028       dri2_dpy->max_swap_interval = 1;
1029       dri2_dpy->default_swap_interval = 1;
1030       break;
1031    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1032       dri2_dpy->min_swap_interval = 0;
1033       dri2_dpy->max_swap_interval = 1;
1034       dri2_dpy->default_swap_interval = 0;
1035       break;
1036    default:
1037    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1038       dri2_dpy->min_swap_interval = 0;
1039       dri2_dpy->max_swap_interval = 1;
1040       dri2_dpy->default_swap_interval = 1;
1041       break;
1042    }
1043 }
1044
1045 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1046    .authenticate = dri2_wl_authenticate,
1047    .create_window_surface = dri2_wl_create_window_surface,
1048    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1049    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1050    .destroy_surface = dri2_wl_destroy_surface,
1051    .create_image = dri2_create_image_khr,
1052    .swap_interval = dri2_wl_swap_interval,
1053    .swap_buffers = dri2_wl_swap_buffers,
1054    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1055    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1056    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1057    .copy_buffers = dri2_fallback_copy_buffers,
1058    .query_buffer_age = dri2_wl_query_buffer_age,
1059    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1060    .get_sync_values = dri2_fallback_get_sync_values,
1061    .get_dri_drawable = dri2_surface_get_dri_drawable,
1062 };
1063
1064 static EGLBoolean
1065 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1066 {
1067    struct dri2_egl_display *dri2_dpy;
1068    const __DRIconfig *config;
1069    uint32_t types;
1070    int i;
1071    static const unsigned int argb_masks[4] =
1072       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1073    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1074    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1075
1076    loader_set_logger(_eglLog);
1077
1078    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1079    if (!dri2_dpy)
1080       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1081
1082    disp->DriverData = (void *) dri2_dpy;
1083    if (disp->PlatformDisplay == NULL) {
1084       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1085       if (dri2_dpy->wl_dpy == NULL)
1086          goto cleanup_dpy;
1087       dri2_dpy->own_device = 1;
1088    } else {
1089       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1090    }
1091
1092    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1093
1094    if (dri2_dpy->own_device)
1095       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1096
1097    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1098    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1099                       dri2_dpy->wl_queue);
1100    wl_registry_add_listener(dri2_dpy->wl_registry,
1101                             &registry_listener_drm, dri2_dpy);
1102    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1103       goto cleanup_registry;
1104
1105    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1106       goto cleanup_drm;
1107
1108    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1109       goto cleanup_fd;
1110
1111    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1112                                                &dri2_dpy->is_different_gpu);
1113    if (dri2_dpy->is_different_gpu) {
1114       free(dri2_dpy->device_name);
1115       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1116       if (!dri2_dpy->device_name) {
1117          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1118                                   "for requested GPU");
1119          goto cleanup_fd;
1120       }
1121    }
1122
1123    /* we have to do the check now, because loader_get_user_preferred_fd
1124     * will return a render-node when the requested gpu is different
1125     * to the server, but also if the client asks for the same gpu than
1126     * the server by requesting its pci-id */
1127    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1128
1129    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
1130    if (dri2_dpy->driver_name == NULL) {
1131       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1132       goto cleanup_fd;
1133    }
1134
1135    if (!dri2_load_driver(disp))
1136       goto cleanup_driver_name;
1137
1138    dri2_dpy->extensions[0] = &image_loader_extension.base;
1139    dri2_dpy->extensions[1] = &image_lookup_extension.base;
1140    dri2_dpy->extensions[2] = &use_invalidate.base;
1141
1142    /* render nodes cannot use Gem names, and thus do not support
1143     * the __DRI_DRI2_LOADER extension */
1144    if (!dri2_dpy->is_render_node) {
1145       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1146       dri2_dpy->dri2_loader_extension.base.version = 3;
1147       dri2_dpy->dri2_loader_extension.getBuffers = dri2_wl_get_buffers;
1148       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_wl_flush_front_buffer;
1149       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1150          dri2_wl_get_buffers_with_format;
1151       dri2_dpy->extensions[3] = &dri2_dpy->dri2_loader_extension.base;
1152       dri2_dpy->extensions[4] = NULL;
1153    } else
1154       dri2_dpy->extensions[3] = NULL;
1155
1156    dri2_dpy->swap_available = EGL_TRUE;
1157
1158    if (!dri2_create_screen(disp))
1159       goto cleanup_driver;
1160
1161    dri2_wl_setup_swap_interval(dri2_dpy);
1162
1163    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1164     * createImageFromFds support indicates that Prime export/import
1165     * is supported by the driver. Fall back to
1166     * gem names if we don't have Prime support. */
1167
1168    if (dri2_dpy->image->base.version < 7 ||
1169        dri2_dpy->image->createImageFromFds == NULL)
1170       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1171
1172    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1173     * The server needs to accept them */
1174    if (dri2_dpy->is_render_node &&
1175        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1176       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1177       goto cleanup_screen;
1178    }
1179
1180    if (dri2_dpy->is_different_gpu &&
1181        (dri2_dpy->image->base.version < 9 ||
1182         dri2_dpy->image->blitImage == NULL)) {
1183       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1184                             "Image extension in the driver is not "
1185                             "compatible. Version 9 or later and blitImage() "
1186                             "are required");
1187       goto cleanup_screen;
1188    }
1189
1190    types = EGL_WINDOW_BIT;
1191    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1192       config = dri2_dpy->driver_configs[i];
1193       if (dri2_dpy->formats & HAS_XRGB8888)
1194          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1195       if (dri2_dpy->formats & HAS_ARGB8888)
1196          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1197       if (dri2_dpy->formats & HAS_RGB565)
1198         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1199    }
1200
1201    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1202    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1203     * because the buffer of the EGLImage has likely a tiling mode the server
1204     * gpu won't support. These is no way to check for now. Thus do not support the
1205     * extension */
1206    if (!dri2_dpy->is_different_gpu) {
1207       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1208    } else {
1209       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1210          dri2_fallback_create_wayland_buffer_from_image;
1211    }
1212    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1213
1214    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1215
1216    /* Fill vtbl last to prevent accidentally calling virtual function during
1217     * initialization.
1218     */
1219    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1220
1221    return EGL_TRUE;
1222
1223  cleanup_screen:
1224    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1225  cleanup_driver:
1226    dlclose(dri2_dpy->driver);
1227  cleanup_driver_name:
1228    free(dri2_dpy->driver_name);
1229  cleanup_fd:
1230    close(dri2_dpy->fd);
1231  cleanup_drm:
1232    free(dri2_dpy->device_name);
1233    wl_drm_destroy(dri2_dpy->wl_drm);
1234  cleanup_registry:
1235    wl_registry_destroy(dri2_dpy->wl_registry);
1236    wl_event_queue_destroy(dri2_dpy->wl_queue);
1237  cleanup_dpy:
1238    free(dri2_dpy);
1239
1240    return EGL_FALSE;
1241 }
1242
1243 static int
1244 dri2_wl_swrast_get_stride_for_format(int format, int w)
1245 {
1246    if (format == WL_SHM_FORMAT_RGB565)
1247       return 2 * w;
1248    else /* ARGB8888 || XRGB8888 */
1249       return 4 * w;
1250 }
1251
1252 /*
1253  * Taken from weston shared/os-compatibility.c
1254  */
1255
1256 #ifndef HAVE_MKOSTEMP
1257
1258 static int
1259 set_cloexec_or_close(int fd)
1260 {
1261    long flags;
1262
1263    if (fd == -1)
1264       return -1;
1265
1266    flags = fcntl(fd, F_GETFD);
1267    if (flags == -1)
1268       goto err;
1269
1270    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1271       goto err;
1272
1273    return fd;
1274
1275 err:
1276    close(fd);
1277    return -1;
1278 }
1279
1280 #endif
1281
1282 /*
1283  * Taken from weston shared/os-compatibility.c
1284  */
1285
1286 static int
1287 create_tmpfile_cloexec(char *tmpname)
1288 {
1289    int fd;
1290
1291 #ifdef HAVE_MKOSTEMP
1292    fd = mkostemp(tmpname, O_CLOEXEC);
1293    if (fd >= 0)
1294       unlink(tmpname);
1295 #else
1296    fd = mkstemp(tmpname);
1297    if (fd >= 0) {
1298       fd = set_cloexec_or_close(fd);
1299       unlink(tmpname);
1300    }
1301 #endif
1302
1303    return fd;
1304 }
1305
1306 /*
1307  * Taken from weston shared/os-compatibility.c
1308  *
1309  * Create a new, unique, anonymous file of the given size, and
1310  * return the file descriptor for it. The file descriptor is set
1311  * CLOEXEC. The file is immediately suitable for mmap()'ing
1312  * the given size at offset zero.
1313  *
1314  * The file should not have a permanent backing store like a disk,
1315  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1316  *
1317  * The file name is deleted from the file system.
1318  *
1319  * The file is suitable for buffer sharing between processes by
1320  * transmitting the file descriptor over Unix sockets using the
1321  * SCM_RIGHTS methods.
1322  *
1323  * If the C library implements posix_fallocate(), it is used to
1324  * guarantee that disk space is available for the file at the
1325  * given size. If disk space is insufficent, errno is set to ENOSPC.
1326  * If posix_fallocate() is not supported, program may receive
1327  * SIGBUS on accessing mmap()'ed file contents instead.
1328  */
1329 static int
1330 os_create_anonymous_file(off_t size)
1331 {
1332    static const char template[] = "/mesa-shared-XXXXXX";
1333    const char *path;
1334    char *name;
1335    int fd;
1336    int ret;
1337
1338    path = getenv("XDG_RUNTIME_DIR");
1339    if (!path) {
1340       errno = ENOENT;
1341       return -1;
1342    }
1343
1344    name = malloc(strlen(path) + sizeof(template));
1345    if (!name)
1346       return -1;
1347
1348    strcpy(name, path);
1349    strcat(name, template);
1350
1351    fd = create_tmpfile_cloexec(name);
1352
1353    free(name);
1354
1355    if (fd < 0)
1356       return -1;
1357
1358    ret = ftruncate(fd, size);
1359    if (ret < 0) {
1360       close(fd);
1361       return -1;
1362    }
1363
1364    return fd;
1365 }
1366
1367
1368 static EGLBoolean
1369 dri2_wl_swrast_allocate_buffer(struct dri2_egl_display *dri2_dpy,
1370                                int format, int w, int h,
1371                                void **data, int *size,
1372                                struct wl_buffer **buffer)
1373 {
1374    struct wl_shm_pool *pool;
1375    int fd, stride, size_map;
1376    void *data_map;
1377
1378    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1379    size_map = h * stride;
1380
1381    /* Create a sharable buffer */
1382    fd = os_create_anonymous_file(size_map);
1383    if (fd < 0)
1384       return EGL_FALSE;
1385
1386    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1387    if (data_map == MAP_FAILED) {
1388       close(fd);
1389       return EGL_FALSE;
1390    }
1391
1392    /* Share it in a wl_buffer */
1393    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1394    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1395    wl_shm_pool_destroy(pool);
1396    close(fd);
1397
1398    *data = data_map;
1399    *size = size_map;
1400    return EGL_TRUE;
1401 }
1402
1403 static int
1404 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1405 {
1406    struct dri2_egl_display *dri2_dpy =
1407       dri2_egl_display(dri2_surf->base.Resource.Display);
1408    int i;
1409
1410    /* we need to do the following operations only once per frame */
1411    if (dri2_surf->back)
1412       return 0;
1413
1414    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1415        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1416
1417       dri2_wl_release_buffers(dri2_surf);
1418
1419       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1420       dri2_surf->base.Height = dri2_surf->wl_win->height;
1421       dri2_surf->dx = dri2_surf->wl_win->dx;
1422       dri2_surf->dy = dri2_surf->wl_win->dy;
1423       dri2_surf->current = NULL;
1424    }
1425
1426    /* find back buffer */
1427
1428    /* We always want to throttle to some event (either a frame callback or
1429     * a sync request) after the commit so that we can be sure the
1430     * compositor has had a chance to handle it and send us a release event
1431     * before we look for a free buffer */
1432    while (dri2_surf->throttle_callback != NULL)
1433       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1434                                     dri2_dpy->wl_queue) == -1)
1435          return -1;
1436
1437    /* try get free buffer already created */
1438    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1439       if (!dri2_surf->color_buffers[i].locked &&
1440           dri2_surf->color_buffers[i].wl_buffer) {
1441           dri2_surf->back = &dri2_surf->color_buffers[i];
1442           break;
1443       }
1444    }
1445
1446    /* else choose any another free location */
1447    if (!dri2_surf->back) {
1448       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1449          if (!dri2_surf->color_buffers[i].locked) {
1450              dri2_surf->back = &dri2_surf->color_buffers[i];
1451              if (!dri2_wl_swrast_allocate_buffer(dri2_dpy,
1452                                                  dri2_surf->format,
1453                                                  dri2_surf->base.Width,
1454                                                  dri2_surf->base.Height,
1455                                                  &dri2_surf->back->data,
1456                                                  &dri2_surf->back->data_size,
1457                                                  &dri2_surf->back->wl_buffer)) {
1458                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1459                  return -1;
1460              }
1461              wl_proxy_set_queue((struct wl_proxy *) dri2_surf->back->wl_buffer,
1462                                 dri2_dpy->wl_queue);
1463              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1464                                     &wl_buffer_listener, dri2_surf);
1465              break;
1466          }
1467       }
1468    }
1469
1470    if (!dri2_surf->back) {
1471       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1472       return -1;
1473    }
1474
1475    dri2_surf->back->locked = 1;
1476
1477    /* If we have an extra unlocked buffer at this point, we had to do triple
1478     * buffering for a while, but now can go back to just double buffering.
1479     * That means we can free any unlocked buffer now. */
1480    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1481       if (!dri2_surf->color_buffers[i].locked &&
1482           dri2_surf->color_buffers[i].wl_buffer) {
1483          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1484          munmap(dri2_surf->color_buffers[i].data,
1485                 dri2_surf->color_buffers[i].data_size);
1486          dri2_surf->color_buffers[i].wl_buffer = NULL;
1487          dri2_surf->color_buffers[i].data = NULL;
1488       }
1489    }
1490
1491    return 0;
1492 }
1493
1494 static void*
1495 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1496 {
1497    /* if there has been a resize: */
1498    if (!dri2_surf->current)
1499       return NULL;
1500
1501    return dri2_surf->current->data;
1502 }
1503
1504 static void*
1505 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1506 {
1507    assert(dri2_surf->back);
1508    return dri2_surf->back->data;
1509 }
1510
1511 static void
1512 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1513 {
1514    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1515
1516    if (dri2_surf->base.SwapInterval > 0) {
1517       dri2_surf->throttle_callback =
1518          wl_surface_frame(dri2_surf->wl_win->surface);
1519       wl_callback_add_listener(dri2_surf->throttle_callback,
1520                                &throttle_listener, dri2_surf);
1521       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1522                          dri2_dpy->wl_queue);
1523    }
1524
1525    dri2_surf->current = dri2_surf->back;
1526    dri2_surf->back = NULL;
1527
1528    wl_surface_attach(dri2_surf->wl_win->surface,
1529                      dri2_surf->current->wl_buffer,
1530                      dri2_surf->dx, dri2_surf->dy);
1531
1532    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1533    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1534    /* reset resize growing parameters */
1535    dri2_surf->dx = 0;
1536    dri2_surf->dy = 0;
1537
1538    wl_surface_damage(dri2_surf->wl_win->surface,
1539                      0, 0, INT32_MAX, INT32_MAX);
1540    wl_surface_commit(dri2_surf->wl_win->surface);
1541
1542    /* If we're not waiting for a frame callback then we'll at least throttle
1543     * to a sync callback so that we always give a chance for the compositor to
1544     * handle the commit and send a release event before checking for a free
1545     * buffer */
1546    if (dri2_surf->throttle_callback == NULL) {
1547       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
1548       wl_callback_add_listener(dri2_surf->throttle_callback,
1549                                &throttle_listener, dri2_surf);
1550       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1551                          dri2_dpy->wl_queue);
1552    }
1553
1554    wl_display_flush(dri2_dpy->wl_dpy);
1555 }
1556
1557 static void
1558 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1559                                  int *x, int *y, int *w, int *h,
1560                                  void *loaderPrivate)
1561 {
1562    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1563
1564    (void) swrast_update_buffers(dri2_surf);
1565    *x = 0;
1566    *y = 0;
1567    *w = dri2_surf->base.Width;
1568    *h = dri2_surf->base.Height;
1569 }
1570
1571 static void
1572 dri2_wl_swrast_get_image(__DRIdrawable * read,
1573                          int x, int y, int w, int h,
1574                          char *data, void *loaderPrivate)
1575 {
1576    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1577    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1578    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1579    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1580    int dst_stride = copy_width;
1581    char *src, *dst;
1582
1583    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1584    if (!src) {
1585       memset(data, 0, copy_width * h);
1586       return;
1587    }
1588
1589    assert(data != src);
1590    assert(copy_width <= src_stride);
1591
1592    src += x_offset;
1593    src += y * src_stride;
1594    dst = data;
1595
1596    if (copy_width > src_stride-x_offset)
1597       copy_width = src_stride-x_offset;
1598    if (h > dri2_surf->base.Height-y)
1599       h = dri2_surf->base.Height-y;
1600
1601    for (; h>0; h--) {
1602       memcpy(dst, src, copy_width);
1603       src += src_stride;
1604       dst += dst_stride;
1605    }
1606 }
1607
1608 static void
1609 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1610                          int x, int y, int w, int h, int stride,
1611                          char *data, void *loaderPrivate)
1612 {
1613    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1614    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1615    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1616    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1617    char *src, *dst;
1618
1619    assert(copy_width <= stride);
1620
1621    (void) swrast_update_buffers(dri2_surf);
1622    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1623
1624    /* partial copy, copy old content */
1625    if (copy_width < dst_stride)
1626       dri2_wl_swrast_get_image(draw, 0, 0,
1627                                dri2_surf->base.Width, dri2_surf->base.Height,
1628                                dst, loaderPrivate);
1629
1630    dst += x_offset;
1631    dst += y * dst_stride;
1632
1633    src = data;
1634
1635    /* drivers expect we do these checks (and some rely on it) */
1636    if (copy_width > dst_stride-x_offset)
1637       copy_width = dst_stride-x_offset;
1638    if (h > dri2_surf->base.Height-y)
1639       h = dri2_surf->base.Height-y;
1640
1641    for (; h>0; h--) {
1642       memcpy(dst, src, copy_width);
1643       src += stride;
1644       dst += dst_stride;
1645    }
1646    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1647 }
1648
1649 static void
1650 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1651                          int x, int y, int w, int h,
1652                          char *data, void *loaderPrivate)
1653 {
1654    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1655    int stride;
1656
1657    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1658    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1659                              stride, data, loaderPrivate);
1660 }
1661
1662 /**
1663  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
1664  */
1665 static _EGLSurface *
1666 dri2_wl_swrast_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
1667                                      _EGLConfig *conf, void *native_window,
1668                                      const EGLint *attrib_list)
1669 {
1670    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1671    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
1672    struct wl_egl_window *window = native_window;
1673    struct dri2_egl_surface *dri2_surf;
1674    const __DRIconfig *config;
1675
1676    (void) drv;
1677
1678    dri2_surf = calloc(1, sizeof *dri2_surf);
1679    if (!dri2_surf) {
1680       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
1681       return NULL;
1682    }
1683
1684    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
1685       goto cleanup_surf;
1686
1687    if (conf->RedSize == 5)
1688       dri2_surf->format = WL_SHM_FORMAT_RGB565;
1689    else if (conf->AlphaSize == 0)
1690       dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
1691    else
1692       dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
1693
1694    dri2_surf->wl_win = window;
1695
1696    dri2_surf->base.Width = -1;
1697    dri2_surf->base.Height = -1;
1698
1699    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
1700                                 dri2_surf->base.GLColorspace);
1701
1702    dri2_surf->dri_drawable =
1703       (*dri2_dpy->swrast->createNewDrawable)(dri2_dpy->dri_screen,
1704                                              config, dri2_surf);
1705    if (dri2_surf->dri_drawable == NULL) {
1706       _eglError(EGL_BAD_ALLOC, "swrast->createNewDrawable");
1707       goto cleanup_dri_drawable;
1708    }
1709
1710    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
1711                          dri2_dpy->default_swap_interval);
1712
1713    return &dri2_surf->base;
1714
1715  cleanup_dri_drawable:
1716    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
1717  cleanup_surf:
1718    free(dri2_surf);
1719
1720    return NULL;
1721 }
1722
1723 static EGLBoolean
1724 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1725 {
1726    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1727    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1728
1729    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1730    return EGL_TRUE;
1731 }
1732
1733 static void
1734 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1735 {
1736    struct dri2_egl_display *dri2_dpy = data;
1737
1738    switch (format) {
1739    case WL_SHM_FORMAT_ARGB8888:
1740       dri2_dpy->formats |= HAS_ARGB8888;
1741       break;
1742    case WL_SHM_FORMAT_XRGB8888:
1743       dri2_dpy->formats |= HAS_XRGB8888;
1744       break;
1745    case WL_SHM_FORMAT_RGB565:
1746       dri2_dpy->formats |= HAS_RGB565;
1747       break;
1748    }
1749 }
1750
1751 static const struct wl_shm_listener shm_listener = {
1752    .format = shm_handle_format
1753 };
1754
1755 static void
1756 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1757                               const char *interface, uint32_t version)
1758 {
1759    struct dri2_egl_display *dri2_dpy = data;
1760
1761    if (strcmp(interface, "wl_shm") == 0) {
1762       dri2_dpy->wl_shm =
1763          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1764       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1765    }
1766 }
1767
1768 static const struct wl_registry_listener registry_listener_swrast = {
1769    .global = registry_handle_global_swrast,
1770    .global_remove = registry_handle_global_remove
1771 };
1772
1773 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1774    .authenticate = NULL,
1775    .create_window_surface = dri2_wl_swrast_create_window_surface,
1776    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1777    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1778    .destroy_surface = dri2_wl_destroy_surface,
1779    .create_image = dri2_fallback_create_image_khr,
1780    .swap_interval = dri2_wl_swap_interval,
1781    .swap_buffers = dri2_wl_swrast_swap_buffers,
1782    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1783    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1784    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1785    .copy_buffers = dri2_fallback_copy_buffers,
1786    .query_buffer_age = dri2_fallback_query_buffer_age,
1787    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1788    .get_sync_values = dri2_fallback_get_sync_values,
1789    .get_dri_drawable = dri2_surface_get_dri_drawable,
1790 };
1791
1792 static EGLBoolean
1793 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1794 {
1795    struct dri2_egl_display *dri2_dpy;
1796    const __DRIconfig *config;
1797    uint32_t types;
1798    int i;
1799    static const unsigned int argb_masks[4] =
1800       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1801    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1802    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1803
1804    loader_set_logger(_eglLog);
1805
1806    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1807    if (!dri2_dpy)
1808       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1809
1810    disp->DriverData = (void *) dri2_dpy;
1811    if (disp->PlatformDisplay == NULL) {
1812       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1813       if (dri2_dpy->wl_dpy == NULL)
1814          goto cleanup_dpy;
1815       dri2_dpy->own_device = 1;
1816    } else {
1817       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1818    }
1819
1820    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1821
1822    if (dri2_dpy->own_device)
1823       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1824
1825    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1826    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1827                       dri2_dpy->wl_queue);
1828    wl_registry_add_listener(dri2_dpy->wl_registry,
1829                             &registry_listener_swrast, dri2_dpy);
1830
1831    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1832       goto cleanup_registry;
1833
1834    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1835       goto cleanup_shm;
1836
1837    dri2_dpy->fd = -1;
1838    dri2_dpy->driver_name = strdup("swrast");
1839    if (!dri2_load_driver_swrast(disp))
1840       goto cleanup_shm;
1841
1842    dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
1843    dri2_dpy->swrast_loader_extension.base.version = 2;
1844    dri2_dpy->swrast_loader_extension.getDrawableInfo = dri2_wl_swrast_get_drawable_info;
1845    dri2_dpy->swrast_loader_extension.putImage = dri2_wl_swrast_put_image;
1846    dri2_dpy->swrast_loader_extension.getImage = dri2_wl_swrast_get_image;
1847    dri2_dpy->swrast_loader_extension.putImage2 = dri2_wl_swrast_put_image2;
1848
1849    dri2_dpy->extensions[0] = &dri2_dpy->swrast_loader_extension.base;
1850    dri2_dpy->extensions[1] = NULL;
1851
1852    if (!dri2_create_screen(disp))
1853       goto cleanup_driver;
1854
1855    dri2_wl_setup_swap_interval(dri2_dpy);
1856
1857    types = EGL_WINDOW_BIT;
1858    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1859       config = dri2_dpy->driver_configs[i];
1860       if (dri2_dpy->formats & HAS_XRGB8888)
1861          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1862       if (dri2_dpy->formats & HAS_ARGB8888)
1863          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1864       if (dri2_dpy->formats & HAS_RGB565)
1865         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1866    }
1867
1868    /* Fill vtbl last to prevent accidentally calling virtual function during
1869     * initialization.
1870     */
1871    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1872
1873    return EGL_TRUE;
1874
1875  cleanup_driver:
1876    dlclose(dri2_dpy->driver);
1877  cleanup_shm:
1878    wl_shm_destroy(dri2_dpy->wl_shm);
1879  cleanup_registry:
1880    wl_registry_destroy(dri2_dpy->wl_registry);
1881    wl_event_queue_destroy(dri2_dpy->wl_queue);
1882  cleanup_dpy:
1883    free(dri2_dpy);
1884
1885    return EGL_FALSE;
1886 }
1887
1888 EGLBoolean
1889 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1890 {
1891    EGLBoolean initialized = EGL_TRUE;
1892
1893    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1894
1895    if (hw_accel) {
1896       if (!dri2_initialize_wayland_drm(drv, disp)) {
1897          initialized = dri2_initialize_wayland_swrast(drv, disp);
1898       }
1899    } else {
1900       initialized = dri2_initialize_wayland_swrast(drv, disp);
1901    }
1902
1903    return initialized;
1904
1905 }