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 /**
 657  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 658  */
 659 static EGLBoolean
 660 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 661                                  _EGLDisplay *disp,
 662                                  _EGLSurface *draw,
 663                                  const EGLint *rects,
 664                                  EGLint n_rects)
 665 {
 666    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 667    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 668    int i;
 669
 670    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 671       if (dri2_surf->color_buffers[i].age > 0)
 672          dri2_surf->color_buffers[i].age++;
 673
 674    /* Make sure we have a back buffer in case we're swapping without ever
 675     * rendering. */
 676    if (get_back_bo(dri2_surf) < 0) {
 677       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 678       return EGL_FALSE;
 679    }
 680
 681    if (draw->SwapInterval > 0) {
 682       dri2_surf->throttle_callback =
 683          wl_surface_frame(dri2_surf->wl_win->surface);
 684       wl_callback_add_listener(dri2_surf->throttle_callback,
 685                                &throttle_listener, dri2_surf);
 686       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 687                          dri2_dpy->wl_queue);
 688    }
 689
 690    dri2_surf->back->age = 1;
 691    dri2_surf->current = dri2_surf->back;
 692    dri2_surf->back = NULL;
 693
 694    create_wl_buffer(dri2_surf);
 695
 696    wl_surface_attach(dri2_surf->wl_win->surface,
 697                      dri2_surf->current->wl_buffer,
 698                      dri2_surf->dx, dri2_surf->dy);
 699
 700    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 701    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 702    /* reset resize growing parameters */
 703    dri2_surf->dx = 0;
 704    dri2_surf->dy = 0;
 705
 706    /* We deliberately ignore the damage region and post maximum damage, due to
 707     * https://bugs.freedesktop.org/78190 */
 708    wl_surface_damage(dri2_surf->wl_win->surface,
 709                      0, 0, INT32_MAX, INT32_MAX);
 710
 711    if (dri2_dpy->is_different_gpu) {
 712       _EGLContext *ctx = _eglGetCurrentContext();
 713       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 714       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 715                                  dri2_surf->current->linear_copy,
 716                                  dri2_surf->current->dri_image,
 717                                  0, 0, dri2_surf->base.Width,
 718                                  dri2_surf->base.Height,
 719                                  0, 0, dri2_surf->base.Width,
 720                                  dri2_surf->base.Height, 0);
 721    }
 722
 723    dri2_flush_drawable_for_swapbuffers(disp, draw);
 724    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 725
 726    wl_surface_commit(dri2_surf->wl_win->surface);
 727
 728    /* If we're not waiting for a frame callback then we'll at least throttle
 729     * to a sync callback so that we always give a chance for the compositor to
 730     * handle the commit and send a release event before checking for a free
 731     * buffer */
 732    if (dri2_surf->throttle_callback == NULL) {
 733       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
 734       wl_callback_add_listener(dri2_surf->throttle_callback,
 735                                &throttle_listener, dri2_surf);
 736       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 737                          dri2_dpy->wl_queue);
 738    }
 739
 740    wl_display_flush(dri2_dpy->wl_dpy);
 741
 742    return EGL_TRUE;
 743 }
 744
 745 static EGLint
 746 dri2_wl_query_buffer_age(_EGLDriver *drv,
 747                          _EGLDisplay *disp, _EGLSurface *surface)
 748 {
 749    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 750
 751    if (get_back_bo(dri2_surf) < 0) {
 752       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 753       return 0;
 754    }
 755
 756    return dri2_surf->back->age;
 757 }
 758
 759 static EGLBoolean
 760 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 761 {
 762    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 763 }
 764
 765 static struct wl_buffer *
 766 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 767                                           _EGLDisplay *disp,
 768                                           _EGLImage *img)
 769 {
 770    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 771    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 772    __DRIimage *image = dri2_img->dri_image;
 773    struct wl_buffer *buffer;
 774    int width, height, format, pitch;
 775    enum wl_drm_format wl_format;
 776
 777    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 778
 779    switch (format) {
 780    case __DRI_IMAGE_FORMAT_ARGB8888:
 781       if (!(dri2_dpy->formats & HAS_ARGB8888))
 782          goto bad_format;
 783       wl_format = WL_DRM_FORMAT_ARGB8888;
 784       break;
 785    case __DRI_IMAGE_FORMAT_XRGB8888:
 786       if (!(dri2_dpy->formats & HAS_XRGB8888))
 787          goto bad_format;
 788       wl_format = WL_DRM_FORMAT_XRGB8888;
 789       break;
 790    default:
 791       goto bad_format;
 792    }
 793
 794    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 795    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 796    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 797
 798    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 799       int fd;
 800
 801       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 802
 803       buffer =
 804          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 805                                     fd,
 806                                     width, height,
 807                                     wl_format,
 808                                     0, pitch,
 809                                     0, 0,
 810                                     0, 0);
 811
 812       close(fd);
 813    } else {
 814       int name;
 815
 816       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 817
 818       buffer =
 819          wl_drm_create_buffer(dri2_dpy->wl_drm,
 820                               name,
 821                               width, height,
 822                               pitch,
 823                               wl_format);
 824    }
 825
 826    /* The buffer object will have been created with our internal event queue
 827     * because it is using the wl_drm object as a proxy factory. We want the
 828     * buffer to be used by the application so we'll reset it to the display's
 829     * default event queue */
 830    if (buffer)
 831       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 832
 833    return buffer;
 834
 835 bad_format:
 836    _eglError(EGL_BAD_MATCH, "unsupported image format");
 837    return NULL;
 838 }
 839
 840 static int
 841 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 842 {
 843    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 844    int ret = 0;
 845
 846    if (dri2_dpy->is_render_node) {
 847       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 848                             "authenticate for render-nodes");
 849       return 0;
 850    }
 851    dri2_dpy->authenticated = 0;
 852
 853    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 854    if (roundtrip(dri2_dpy) < 0)
 855       ret = -1;
 856
 857    if (!dri2_dpy->authenticated)
 858       ret = -1;
 859
 860    /* reset authenticated */
 861    dri2_dpy->authenticated = 1;
 862
 863    return ret;
 864 }
 865
 866 static void
 867 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 868 {
 869    struct dri2_egl_display *dri2_dpy = data;
 870    drm_magic_t magic;
 871
 872    dri2_dpy->device_name = strdup(device);
 873    if (!dri2_dpy->device_name)
 874       return;
 875
 876    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 877    if (dri2_dpy->fd == -1) {
 878       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 879               dri2_dpy->device_name, strerror(errno));
 880       return;
 881    }
 882
 883    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 884       dri2_dpy->authenticated = 1;
 885    } else {
 886       drmGetMagic(dri2_dpy->fd, &magic);
 887       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 888    }
 889 }
 890
 891 static void
 892 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 893 {
 894    struct dri2_egl_display *dri2_dpy = data;
 895
 896    switch (format) {
 897    case WL_DRM_FORMAT_ARGB8888:
 898       dri2_dpy->formats |= HAS_ARGB8888;
 899       break;
 900    case WL_DRM_FORMAT_XRGB8888:
 901       dri2_dpy->formats |= HAS_XRGB8888;
 902       break;
 903    case WL_DRM_FORMAT_RGB565:
 904       dri2_dpy->formats |= HAS_RGB565;
 905       break;
 906    }
 907 }
 908
 909 static void
 910 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 911 {
 912    struct dri2_egl_display *dri2_dpy = data;
 913
 914    dri2_dpy->capabilities = value;
 915 }
 916
 917 static void
 918 drm_handle_authenticated(void *data, struct wl_drm *drm)
 919 {
 920    struct dri2_egl_display *dri2_dpy = data;
 921
 922    dri2_dpy->authenticated = 1;
 923 }
 924
 925 static const struct wl_drm_listener drm_listener = {
 926    .device = drm_handle_device,
 927    .format = drm_handle_format,
 928    .authenticated = drm_handle_authenticated,
 929    .capabilities = drm_handle_capabilities
 930 };
 931
 932 static void
 933 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 934                        const char *interface, uint32_t version)
 935 {
 936    struct dri2_egl_display *dri2_dpy = data;
 937
 938    if (version > 1)
 939       version = 2;
 940    if (strcmp(interface, "wl_drm") == 0) {
 941       dri2_dpy->wl_drm =
 942          wl_registry_bind(registry, name, &wl_drm_interface, version);
 943       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 944    }
 945 }
 946
 947 static void
 948 registry_handle_global_remove(void *data, struct wl_registry *registry,
 949                               uint32_t name)
 950 {
 951 }
 952
 953 static const struct wl_registry_listener registry_listener_drm = {
 954    .global = registry_handle_global_drm,
 955    .global_remove = registry_handle_global_remove
 956 };
 957
 958 static EGLBoolean
 959 dri2_wl_swap_interval(_EGLDriver *drv,
 960                    _EGLDisplay *disp,
 961                    _EGLSurface *surf,
 962                    EGLint interval)
 963 {
 964    if (interval > surf->Config->MaxSwapInterval)
 965       interval = surf->Config->MaxSwapInterval;
 966    else if (interval < surf->Config->MinSwapInterval)
 967       interval = surf->Config->MinSwapInterval;
 968
 969    surf->SwapInterval = interval;
 970
 971    return EGL_TRUE;
 972 }
 973
 974 static void
 975 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
 976 {
 977    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 978
 979    /* We can't use values greater than 1 on Wayland because we are using the
 980     * frame callback to synchronise the frame and the only way we be sure to
 981     * get a frame callback is to attach a new buffer. Therefore we can't just
 982     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
 983
 984    if (dri2_dpy->config)
 985       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 986                                      "vblank_mode", &vblank_mode);
 987    switch (vblank_mode) {
 988    case DRI_CONF_VBLANK_NEVER:
 989       dri2_dpy->min_swap_interval = 0;
 990       dri2_dpy->max_swap_interval = 0;
 991       dri2_dpy->default_swap_interval = 0;
 992       break;
 993    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 994       dri2_dpy->min_swap_interval = 1;
 995       dri2_dpy->max_swap_interval = 1;
 996       dri2_dpy->default_swap_interval = 1;
 997       break;
 998    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 999       dri2_dpy->min_swap_interval = 0;
1000       dri2_dpy->max_swap_interval = 1;
1001       dri2_dpy->default_swap_interval = 0;
1002       break;
1003    default:
1004    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1005       dri2_dpy->min_swap_interval = 0;
1006       dri2_dpy->max_swap_interval = 1;
1007       dri2_dpy->default_swap_interval = 1;
1008       break;
1009    }
1010 }
1011
1012 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1013    .authenticate = dri2_wl_authenticate,
1014    .create_window_surface = dri2_wl_create_window_surface,
1015    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1016    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1017    .destroy_surface = dri2_wl_destroy_surface,
1018    .create_image = dri2_create_image_khr,
1019    .swap_interval = dri2_wl_swap_interval,
1020    .swap_buffers = dri2_wl_swap_buffers,
1021    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1022    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1023    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1024    .copy_buffers = dri2_fallback_copy_buffers,
1025    .query_buffer_age = dri2_wl_query_buffer_age,
1026    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1027    .get_sync_values = dri2_fallback_get_sync_values,
1028    .get_dri_drawable = dri2_surface_get_dri_drawable,
1029 };
1030
1031 static EGLBoolean
1032 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1033 {
1034    struct dri2_egl_display *dri2_dpy;
1035    const __DRIconfig *config;
1036    uint32_t types;
1037    int i;
1038    static const unsigned int argb_masks[4] =
1039       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1040    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1041    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1042
1043    loader_set_logger(_eglLog);
1044
1045    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1046    if (!dri2_dpy)
1047       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1048
1049    disp->DriverData = (void *) dri2_dpy;
1050    if (disp->PlatformDisplay == NULL) {
1051       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1052       if (dri2_dpy->wl_dpy == NULL)
1053          goto cleanup_dpy;
1054       dri2_dpy->own_device = 1;
1055    } else {
1056       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1057    }
1058
1059    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1060
1061    if (dri2_dpy->own_device)
1062       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1063
1064    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1065    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1066                       dri2_dpy->wl_queue);
1067    wl_registry_add_listener(dri2_dpy->wl_registry,
1068                             &registry_listener_drm, dri2_dpy);
1069    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1070       goto cleanup_registry;
1071
1072    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1073       goto cleanup_drm;
1074
1075    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1076       goto cleanup_fd;
1077
1078    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1079                                                &dri2_dpy->is_different_gpu);
1080    if (dri2_dpy->is_different_gpu) {
1081       free(dri2_dpy->device_name);
1082       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1083       if (!dri2_dpy->device_name) {
1084          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1085                                   "for requested GPU");
1086          goto cleanup_fd;
1087       }
1088    }
1089
1090    /* we have to do the check now, because loader_get_user_preferred_fd
1091     * will return a render-node when the requested gpu is different
1092     * to the server, but also if the client asks for the same gpu than
1093     * the server by requesting its pci-id */
1094    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1095
1096    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
1097    if (dri2_dpy->driver_name == NULL) {
1098       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1099       goto cleanup_fd;
1100    }
1101
1102    if (!dri2_load_driver(disp))
1103       goto cleanup_driver_name;
1104
1105    dri2_dpy->extensions[0] = &image_loader_extension.base;
1106    dri2_dpy->extensions[1] = &image_lookup_extension.base;
1107    dri2_dpy->extensions[2] = &use_invalidate.base;
1108
1109    /* render nodes cannot use Gem names, and thus do not support
1110     * the __DRI_DRI2_LOADER extension */
1111    if (!dri2_dpy->is_render_node) {
1112       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1113       dri2_dpy->dri2_loader_extension.base.version = 3;
1114       dri2_dpy->dri2_loader_extension.getBuffers = dri2_wl_get_buffers;
1115       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_wl_flush_front_buffer;
1116       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1117          dri2_wl_get_buffers_with_format;
1118       dri2_dpy->extensions[3] = &dri2_dpy->dri2_loader_extension.base;
1119       dri2_dpy->extensions[4] = NULL;
1120    } else
1121       dri2_dpy->extensions[3] = NULL;
1122
1123    dri2_dpy->swap_available = EGL_TRUE;
1124
1125    if (!dri2_create_screen(disp))
1126       goto cleanup_driver;
1127
1128    dri2_wl_setup_swap_interval(dri2_dpy);
1129
1130    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1131     * createImageFromFds support indicates that Prime export/import
1132     * is supported by the driver. Fall back to
1133     * gem names if we don't have Prime support. */
1134
1135    if (dri2_dpy->image->base.version < 7 ||
1136        dri2_dpy->image->createImageFromFds == NULL)
1137       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1138
1139    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1140     * The server needs to accept them */
1141    if (dri2_dpy->is_render_node &&
1142        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1143       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1144       goto cleanup_screen;
1145    }
1146
1147    if (dri2_dpy->is_different_gpu &&
1148        (dri2_dpy->image->base.version < 9 ||
1149         dri2_dpy->image->blitImage == NULL)) {
1150       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1151                             "Image extension in the driver is not "
1152                             "compatible. Version 9 or later and blitImage() "
1153                             "are required");
1154       goto cleanup_screen;
1155    }
1156
1157    types = EGL_WINDOW_BIT;
1158    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1159       config = dri2_dpy->driver_configs[i];
1160       if (dri2_dpy->formats & HAS_XRGB8888)
1161          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1162       if (dri2_dpy->formats & HAS_ARGB8888)
1163          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1164       if (dri2_dpy->formats & HAS_RGB565)
1165         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1166    }
1167
1168    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1169    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1170     * because the buffer of the EGLImage has likely a tiling mode the server
1171     * gpu won't support. These is no way to check for now. Thus do not support the
1172     * extension */
1173    if (!dri2_dpy->is_different_gpu) {
1174       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1175    } else {
1176       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1177          dri2_fallback_create_wayland_buffer_from_image;
1178    }
1179    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1180
1181    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1182
1183    /* Fill vtbl last to prevent accidentally calling virtual function during
1184     * initialization.
1185     */
1186    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1187
1188    return EGL_TRUE;
1189
1190  cleanup_screen:
1191    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1192  cleanup_driver:
1193    dlclose(dri2_dpy->driver);
1194  cleanup_driver_name:
1195    free(dri2_dpy->driver_name);
1196  cleanup_fd:
1197    close(dri2_dpy->fd);
1198  cleanup_drm:
1199    free(dri2_dpy->device_name);
1200    wl_drm_destroy(dri2_dpy->wl_drm);
1201  cleanup_registry:
1202    wl_registry_destroy(dri2_dpy->wl_registry);
1203    wl_event_queue_destroy(dri2_dpy->wl_queue);
1204  cleanup_dpy:
1205    free(dri2_dpy);
1206
1207    return EGL_FALSE;
1208 }
1209
1210 static int
1211 dri2_wl_swrast_get_stride_for_format(int format, int w)
1212 {
1213    if (format == WL_SHM_FORMAT_RGB565)
1214       return 2 * w;
1215    else /* ARGB8888 || XRGB8888 */
1216       return 4 * w;
1217 }
1218
1219 /*
1220  * Taken from weston shared/os-compatibility.c
1221  */
1222
1223 #ifndef HAVE_MKOSTEMP
1224
1225 static int
1226 set_cloexec_or_close(int fd)
1227 {
1228    long flags;
1229
1230    if (fd == -1)
1231       return -1;
1232
1233    flags = fcntl(fd, F_GETFD);
1234    if (flags == -1)
1235       goto err;
1236
1237    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1238       goto err;
1239
1240    return fd;
1241
1242 err:
1243    close(fd);
1244    return -1;
1245 }
1246
1247 #endif
1248
1249 /*
1250  * Taken from weston shared/os-compatibility.c
1251  */
1252
1253 static int
1254 create_tmpfile_cloexec(char *tmpname)
1255 {
1256    int fd;
1257
1258 #ifdef HAVE_MKOSTEMP
1259    fd = mkostemp(tmpname, O_CLOEXEC);
1260    if (fd >= 0)
1261       unlink(tmpname);
1262 #else
1263    fd = mkstemp(tmpname);
1264    if (fd >= 0) {
1265       fd = set_cloexec_or_close(fd);
1266       unlink(tmpname);
1267    }
1268 #endif
1269
1270    return fd;
1271 }
1272
1273 /*
1274  * Taken from weston shared/os-compatibility.c
1275  *
1276  * Create a new, unique, anonymous file of the given size, and
1277  * return the file descriptor for it. The file descriptor is set
1278  * CLOEXEC. The file is immediately suitable for mmap()'ing
1279  * the given size at offset zero.
1280  *
1281  * The file should not have a permanent backing store like a disk,
1282  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1283  *
1284  * The file name is deleted from the file system.
1285  *
1286  * The file is suitable for buffer sharing between processes by
1287  * transmitting the file descriptor over Unix sockets using the
1288  * SCM_RIGHTS methods.
1289  *
1290  * If the C library implements posix_fallocate(), it is used to
1291  * guarantee that disk space is available for the file at the
1292  * given size. If disk space is insufficent, errno is set to ENOSPC.
1293  * If posix_fallocate() is not supported, program may receive
1294  * SIGBUS on accessing mmap()'ed file contents instead.
1295  */
1296 static int
1297 os_create_anonymous_file(off_t size)
1298 {
1299    static const char template[] = "/mesa-shared-XXXXXX";
1300    const char *path;
1301    char *name;
1302    int fd;
1303    int ret;
1304
1305    path = getenv("XDG_RUNTIME_DIR");
1306    if (!path) {
1307       errno = ENOENT;
1308       return -1;
1309    }
1310
1311    name = malloc(strlen(path) + sizeof(template));
1312    if (!name)
1313       return -1;
1314
1315    strcpy(name, path);
1316    strcat(name, template);
1317
1318    fd = create_tmpfile_cloexec(name);
1319
1320    free(name);
1321
1322    if (fd < 0)
1323       return -1;
1324
1325    ret = ftruncate(fd, size);
1326    if (ret < 0) {
1327       close(fd);
1328       return -1;
1329    }
1330
1331    return fd;
1332 }
1333
1334
1335 static EGLBoolean
1336 dri2_wl_swrast_allocate_buffer(struct dri2_egl_display *dri2_dpy,
1337                                int format, int w, int h,
1338                                void **data, int *size,
1339                                struct wl_buffer **buffer)
1340 {
1341    struct wl_shm_pool *pool;
1342    int fd, stride, size_map;
1343    void *data_map;
1344
1345    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1346    size_map = h * stride;
1347
1348    /* Create a sharable buffer */
1349    fd = os_create_anonymous_file(size_map);
1350    if (fd < 0)
1351       return EGL_FALSE;
1352
1353    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1354    if (data_map == MAP_FAILED) {
1355       close(fd);
1356       return EGL_FALSE;
1357    }
1358
1359    /* Share it in a wl_buffer */
1360    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1361    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1362    wl_shm_pool_destroy(pool);
1363    close(fd);
1364
1365    *data = data_map;
1366    *size = size_map;
1367    return EGL_TRUE;
1368 }
1369
1370 static int
1371 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1372 {
1373    struct dri2_egl_display *dri2_dpy =
1374       dri2_egl_display(dri2_surf->base.Resource.Display);
1375    int i;
1376
1377    /* we need to do the following operations only once per frame */
1378    if (dri2_surf->back)
1379       return 0;
1380
1381    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1382        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1383
1384       dri2_wl_release_buffers(dri2_surf);
1385
1386       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1387       dri2_surf->base.Height = dri2_surf->wl_win->height;
1388       dri2_surf->dx = dri2_surf->wl_win->dx;
1389       dri2_surf->dy = dri2_surf->wl_win->dy;
1390       dri2_surf->current = NULL;
1391    }
1392
1393    /* find back buffer */
1394
1395    /* We always want to throttle to some event (either a frame callback or
1396     * a sync request) after the commit so that we can be sure the
1397     * compositor has had a chance to handle it and send us a release event
1398     * before we look for a free buffer */
1399    while (dri2_surf->throttle_callback != NULL)
1400       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1401                                     dri2_dpy->wl_queue) == -1)
1402          return -1;
1403
1404    /* try get free buffer already created */
1405    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1406       if (!dri2_surf->color_buffers[i].locked &&
1407           dri2_surf->color_buffers[i].wl_buffer) {
1408           dri2_surf->back = &dri2_surf->color_buffers[i];
1409           break;
1410       }
1411    }
1412
1413    /* else choose any another free location */
1414    if (!dri2_surf->back) {
1415       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1416          if (!dri2_surf->color_buffers[i].locked) {
1417              dri2_surf->back = &dri2_surf->color_buffers[i];
1418              if (!dri2_wl_swrast_allocate_buffer(dri2_dpy,
1419                                                  dri2_surf->format,
1420                                                  dri2_surf->base.Width,
1421                                                  dri2_surf->base.Height,
1422                                                  &dri2_surf->back->data,
1423                                                  &dri2_surf->back->data_size,
1424                                                  &dri2_surf->back->wl_buffer)) {
1425                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1426                  return -1;
1427              }
1428              wl_proxy_set_queue((struct wl_proxy *) dri2_surf->back->wl_buffer,
1429                                 dri2_dpy->wl_queue);
1430              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1431                                     &wl_buffer_listener, dri2_surf);
1432              break;
1433          }
1434       }
1435    }
1436
1437    if (!dri2_surf->back) {
1438       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1439       return -1;
1440    }
1441
1442    dri2_surf->back->locked = 1;
1443
1444    /* If we have an extra unlocked buffer at this point, we had to do triple
1445     * buffering for a while, but now can go back to just double buffering.
1446     * That means we can free any unlocked buffer now. */
1447    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1448       if (!dri2_surf->color_buffers[i].locked &&
1449           dri2_surf->color_buffers[i].wl_buffer) {
1450          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1451          munmap(dri2_surf->color_buffers[i].data,
1452                 dri2_surf->color_buffers[i].data_size);
1453          dri2_surf->color_buffers[i].wl_buffer = NULL;
1454          dri2_surf->color_buffers[i].data = NULL;
1455       }
1456    }
1457
1458    return 0;
1459 }
1460
1461 static void*
1462 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1463 {
1464    /* if there has been a resize: */
1465    if (!dri2_surf->current)
1466       return NULL;
1467
1468    return dri2_surf->current->data;
1469 }
1470
1471 static void*
1472 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1473 {
1474    assert(dri2_surf->back);
1475    return dri2_surf->back->data;
1476 }
1477
1478 static void
1479 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1480 {
1481    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1482
1483    if (dri2_surf->base.SwapInterval > 0) {
1484       dri2_surf->throttle_callback =
1485          wl_surface_frame(dri2_surf->wl_win->surface);
1486       wl_callback_add_listener(dri2_surf->throttle_callback,
1487                                &throttle_listener, dri2_surf);
1488       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1489                          dri2_dpy->wl_queue);
1490    }
1491
1492    dri2_surf->current = dri2_surf->back;
1493    dri2_surf->back = NULL;
1494
1495    wl_surface_attach(dri2_surf->wl_win->surface,
1496                      dri2_surf->current->wl_buffer,
1497                      dri2_surf->dx, dri2_surf->dy);
1498
1499    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1500    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1501    /* reset resize growing parameters */
1502    dri2_surf->dx = 0;
1503    dri2_surf->dy = 0;
1504
1505    wl_surface_damage(dri2_surf->wl_win->surface,
1506                      0, 0, INT32_MAX, INT32_MAX);
1507    wl_surface_commit(dri2_surf->wl_win->surface);
1508
1509    /* If we're not waiting for a frame callback then we'll at least throttle
1510     * to a sync callback so that we always give a chance for the compositor to
1511     * handle the commit and send a release event before checking for a free
1512     * buffer */
1513    if (dri2_surf->throttle_callback == NULL) {
1514       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
1515       wl_callback_add_listener(dri2_surf->throttle_callback,
1516                                &throttle_listener, dri2_surf);
1517       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1518                          dri2_dpy->wl_queue);
1519    }
1520
1521    wl_display_flush(dri2_dpy->wl_dpy);
1522 }
1523
1524 static void
1525 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1526                                  int *x, int *y, int *w, int *h,
1527                                  void *loaderPrivate)
1528 {
1529    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1530
1531    (void) swrast_update_buffers(dri2_surf);
1532    *x = 0;
1533    *y = 0;
1534    *w = dri2_surf->base.Width;
1535    *h = dri2_surf->base.Height;
1536 }
1537
1538 static void
1539 dri2_wl_swrast_get_image(__DRIdrawable * read,
1540                          int x, int y, int w, int h,
1541                          char *data, void *loaderPrivate)
1542 {
1543    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1544    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1545    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1546    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1547    int dst_stride = copy_width;
1548    char *src, *dst;
1549
1550    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1551    if (!src) {
1552       memset(data, 0, copy_width * h);
1553       return;
1554    }
1555
1556    assert(data != src);
1557    assert(copy_width <= src_stride);
1558
1559    src += x_offset;
1560    src += y * src_stride;
1561    dst = data;
1562
1563    if (copy_width > src_stride-x_offset)
1564       copy_width = src_stride-x_offset;
1565    if (h > dri2_surf->base.Height-y)
1566       h = dri2_surf->base.Height-y;
1567
1568    for (; h>0; h--) {
1569       memcpy(dst, src, copy_width);
1570       src += src_stride;
1571       dst += dst_stride;
1572    }
1573 }
1574
1575 static void
1576 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1577                          int x, int y, int w, int h, int stride,
1578                          char *data, void *loaderPrivate)
1579 {
1580    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1581    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1582    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1583    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1584    char *src, *dst;
1585
1586    assert(copy_width <= stride);
1587
1588    (void) swrast_update_buffers(dri2_surf);
1589    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1590
1591    /* partial copy, copy old content */
1592    if (copy_width < dst_stride)
1593       dri2_wl_swrast_get_image(draw, 0, 0,
1594                                dri2_surf->base.Width, dri2_surf->base.Height,
1595                                dst, loaderPrivate);
1596
1597    dst += x_offset;
1598    dst += y * dst_stride;
1599
1600    src = data;
1601
1602    /* drivers expect we do these checks (and some rely on it) */
1603    if (copy_width > dst_stride-x_offset)
1604       copy_width = dst_stride-x_offset;
1605    if (h > dri2_surf->base.Height-y)
1606       h = dri2_surf->base.Height-y;
1607
1608    for (; h>0; h--) {
1609       memcpy(dst, src, copy_width);
1610       src += stride;
1611       dst += dst_stride;
1612    }
1613    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1614 }
1615
1616 static void
1617 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1618                          int x, int y, int w, int h,
1619                          char *data, void *loaderPrivate)
1620 {
1621    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1622    int stride;
1623
1624    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1625    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1626                              stride, data, loaderPrivate);
1627 }
1628
1629 /**
1630  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
1631  */
1632 static _EGLSurface *
1633 dri2_wl_swrast_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
1634                                      _EGLConfig *conf, void *native_window,
1635                                      const EGLint *attrib_list)
1636 {
1637    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1638    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
1639    struct wl_egl_window *window = native_window;
1640    struct dri2_egl_surface *dri2_surf;
1641    const __DRIconfig *config;
1642
1643    (void) drv;
1644
1645    dri2_surf = calloc(1, sizeof *dri2_surf);
1646    if (!dri2_surf) {
1647       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
1648       return NULL;
1649    }
1650
1651    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
1652       goto cleanup_surf;
1653
1654    if (conf->RedSize == 5)
1655       dri2_surf->format = WL_SHM_FORMAT_RGB565;
1656    else if (conf->AlphaSize == 0)
1657       dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
1658    else
1659       dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
1660
1661    dri2_surf->wl_win = window;
1662
1663    dri2_surf->base.Width = -1;
1664    dri2_surf->base.Height = -1;
1665
1666    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
1667                                 dri2_surf->base.GLColorspace);
1668
1669    dri2_surf->dri_drawable =
1670       (*dri2_dpy->swrast->createNewDrawable)(dri2_dpy->dri_screen,
1671                                              config, dri2_surf);
1672    if (dri2_surf->dri_drawable == NULL) {
1673       _eglError(EGL_BAD_ALLOC, "swrast->createNewDrawable");
1674       goto cleanup_dri_drawable;
1675    }
1676
1677    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
1678                          dri2_dpy->default_swap_interval);
1679
1680    return &dri2_surf->base;
1681
1682  cleanup_dri_drawable:
1683    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
1684  cleanup_surf:
1685    free(dri2_surf);
1686
1687    return NULL;
1688 }
1689
1690 static EGLBoolean
1691 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1692 {
1693    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1694    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1695
1696    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1697    return EGL_TRUE;
1698 }
1699
1700 static void
1701 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1702 {
1703    struct dri2_egl_display *dri2_dpy = data;
1704
1705    switch (format) {
1706    case WL_SHM_FORMAT_ARGB8888:
1707       dri2_dpy->formats |= HAS_ARGB8888;
1708       break;
1709    case WL_SHM_FORMAT_XRGB8888:
1710       dri2_dpy->formats |= HAS_XRGB8888;
1711       break;
1712    case WL_SHM_FORMAT_RGB565:
1713       dri2_dpy->formats |= HAS_RGB565;
1714       break;
1715    }
1716 }
1717
1718 static const struct wl_shm_listener shm_listener = {
1719    .format = shm_handle_format
1720 };
1721
1722 static void
1723 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1724                               const char *interface, uint32_t version)
1725 {
1726    struct dri2_egl_display *dri2_dpy = data;
1727
1728    if (strcmp(interface, "wl_shm") == 0) {
1729       dri2_dpy->wl_shm =
1730          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1731       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1732    }
1733 }
1734
1735 static const struct wl_registry_listener registry_listener_swrast = {
1736    .global = registry_handle_global_swrast,
1737    .global_remove = registry_handle_global_remove
1738 };
1739
1740 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1741    .authenticate = NULL,
1742    .create_window_surface = dri2_wl_swrast_create_window_surface,
1743    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1744    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1745    .destroy_surface = dri2_wl_destroy_surface,
1746    .create_image = dri2_fallback_create_image_khr,
1747    .swap_interval = dri2_wl_swap_interval,
1748    .swap_buffers = dri2_wl_swrast_swap_buffers,
1749    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1750    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1751    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1752    .copy_buffers = dri2_fallback_copy_buffers,
1753    .query_buffer_age = dri2_fallback_query_buffer_age,
1754    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1755    .get_sync_values = dri2_fallback_get_sync_values,
1756    .get_dri_drawable = dri2_surface_get_dri_drawable,
1757 };
1758
1759 static EGLBoolean
1760 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1761 {
1762    struct dri2_egl_display *dri2_dpy;
1763    const __DRIconfig *config;
1764    uint32_t types;
1765    int i;
1766    static const unsigned int argb_masks[4] =
1767       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1768    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1769    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1770
1771    loader_set_logger(_eglLog);
1772
1773    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1774    if (!dri2_dpy)
1775       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1776
1777    disp->DriverData = (void *) dri2_dpy;
1778    if (disp->PlatformDisplay == NULL) {
1779       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1780       if (dri2_dpy->wl_dpy == NULL)
1781          goto cleanup_dpy;
1782       dri2_dpy->own_device = 1;
1783    } else {
1784       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1785    }
1786
1787    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1788
1789    if (dri2_dpy->own_device)
1790       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1791
1792    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1793    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1794                       dri2_dpy->wl_queue);
1795    wl_registry_add_listener(dri2_dpy->wl_registry,
1796                             &registry_listener_swrast, dri2_dpy);
1797
1798    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1799       goto cleanup_registry;
1800
1801    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1802       goto cleanup_shm;
1803
1804    dri2_dpy->fd = -1;
1805    dri2_dpy->driver_name = strdup("swrast");
1806    if (!dri2_load_driver_swrast(disp))
1807       goto cleanup_shm;
1808
1809    dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
1810    dri2_dpy->swrast_loader_extension.base.version = 2;
1811    dri2_dpy->swrast_loader_extension.getDrawableInfo = dri2_wl_swrast_get_drawable_info;
1812    dri2_dpy->swrast_loader_extension.putImage = dri2_wl_swrast_put_image;
1813    dri2_dpy->swrast_loader_extension.getImage = dri2_wl_swrast_get_image;
1814    dri2_dpy->swrast_loader_extension.putImage2 = dri2_wl_swrast_put_image2;
1815
1816    dri2_dpy->extensions[0] = &dri2_dpy->swrast_loader_extension.base;
1817    dri2_dpy->extensions[1] = NULL;
1818
1819    if (!dri2_create_screen(disp))
1820       goto cleanup_driver;
1821
1822    dri2_wl_setup_swap_interval(dri2_dpy);
1823
1824    types = EGL_WINDOW_BIT;
1825    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1826       config = dri2_dpy->driver_configs[i];
1827       if (dri2_dpy->formats & HAS_XRGB8888)
1828          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1829       if (dri2_dpy->formats & HAS_ARGB8888)
1830          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1831       if (dri2_dpy->formats & HAS_RGB565)
1832         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1833    }
1834
1835    /* Fill vtbl last to prevent accidentally calling virtual function during
1836     * initialization.
1837     */
1838    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1839
1840    return EGL_TRUE;
1841
1842  cleanup_driver:
1843    dlclose(dri2_dpy->driver);
1844  cleanup_shm:
1845    wl_shm_destroy(dri2_dpy->wl_shm);
1846  cleanup_registry:
1847    wl_registry_destroy(dri2_dpy->wl_registry);
1848    wl_event_queue_destroy(dri2_dpy->wl_queue);
1849  cleanup_dpy:
1850    free(dri2_dpy);
1851
1852    return EGL_FALSE;
1853 }
1854
1855 EGLBoolean
1856 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1857 {
1858    EGLBoolean initialized = EGL_TRUE;
1859
1860    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1861
1862    if (hw_accel) {
1863       if (!dri2_initialize_wayland_drm(drv, disp)) {
1864          initialized = dri2_initialize_wayland_swrast(drv, disp);
1865       }
1866    } else {
1867       initialized = dri2_initialize_wayland_swrast(drv, disp);
1868    }
1869
1870    return initialized;
1871
1872 }