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 int
  59 roundtrip(struct dri2_egl_display *dri2_dpy)
  60 {
  61    return wl_display_roundtrip_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  62 }
  63
  64 static void
  65 wl_buffer_release(void *data, struct wl_buffer *buffer)
  66 {
  67    struct dri2_egl_surface *dri2_surf = data;
  68    int i;
  69
  70    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  71       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  72          break;
  73
  74    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
  75       wl_buffer_destroy(buffer);
  76       return;
  77    }
  78
  79    dri2_surf->color_buffers[i].locked = 0;
  80 }
  81
  82 static const struct wl_buffer_listener wl_buffer_listener = {
  83    .release = wl_buffer_release
  84 };
  85
  86 static void
  87 resize_callback(struct wl_egl_window *wl_win, void *data)
  88 {
  89    struct dri2_egl_surface *dri2_surf = data;
  90    struct dri2_egl_display *dri2_dpy =
  91       dri2_egl_display(dri2_surf->base.Resource.Display);
  92
  93    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
  94 }
  95
  96 static void
  97 destroy_window_callback(void *data)
  98 {
  99    struct dri2_egl_surface *dri2_surf = data;
 100    dri2_surf->wl_win = NULL;
 101 }
 102
 103 /**
 104  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 105  */
 106 static _EGLSurface *
 107 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 108                               _EGLConfig *conf, void *native_window,
 109                               const EGLint *attrib_list)
 110 {
 111    __DRIcreateNewDrawableFunc createNewDrawable;
 112    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 113    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 114    struct wl_egl_window *window = native_window;
 115    struct dri2_egl_surface *dri2_surf;
 116    const __DRIconfig *config;
 117
 118    dri2_surf = calloc(1, sizeof *dri2_surf);
 119    if (!dri2_surf) {
 120       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 121       return NULL;
 122    }
 123
 124    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 125       goto cleanup_surf;
 126
 127    if (dri2_dpy->wl_drm) {
 128       if (conf->RedSize == 5)
 129          dri2_surf->format = WL_DRM_FORMAT_RGB565;
 130       else if (conf->AlphaSize == 0)
 131          dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 132       else
 133          dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 134    } else {
 135       assert(dri2_dpy->wl_shm);
 136       if (conf->RedSize == 5)
 137          dri2_surf->format = WL_SHM_FORMAT_RGB565;
 138       else if (conf->AlphaSize == 0)
 139          dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
 140       else
 141          dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
 142    }
 143
 144    if (!window) {
 145       _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 146       goto cleanup_surf;
 147    }
 148
 149    dri2_surf->wl_win = window;
 150    dri2_surf->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 151    if (!dri2_surf->wl_queue) {
 152       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 153       goto cleanup_surf;
 154    }
 155
 156    if (dri2_dpy->wl_drm) {
 157       dri2_surf->wl_drm_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_drm);
 158       if (!dri2_surf->wl_drm_wrapper) {
 159          _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 160          goto cleanup_queue;
 161       }
 162       wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_drm_wrapper,
 163                          dri2_surf->wl_queue);
 164    }
 165
 166    dri2_surf->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
 167    if (!dri2_surf->wl_dpy_wrapper) {
 168       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 169       goto cleanup_drm;
 170    }
 171    wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_dpy_wrapper,
 172                       dri2_surf->wl_queue);
 173
 174    dri2_surf->wl_surface_wrapper = wl_proxy_create_wrapper(window->surface);
 175    if (!dri2_surf->wl_surface_wrapper) {
 176       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 177       goto cleanup_drm;
 178    }
 179    wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_surface_wrapper,
 180                       dri2_surf->wl_queue);
 181
 182    dri2_surf->wl_win->private = dri2_surf;
 183    dri2_surf->wl_win->destroy_window_callback = destroy_window_callback;
 184
 185    dri2_surf->base.Width =  -1;
 186    dri2_surf->base.Height = -1;
 187
 188    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 189                                 dri2_surf->base.GLColorspace);
 190
 191    if (dri2_dpy->dri2) {
 192       dri2_surf->wl_win->resize_callback = resize_callback;
 193
 194       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
 195    } else {
 196       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
 197    }
 198
 199    dri2_surf->dri_drawable = (*createNewDrawable)(dri2_dpy->dri_screen, config,
 200                                                   dri2_surf);
 201     if (dri2_surf->dri_drawable == NULL) {
 202       _eglError(EGL_BAD_ALLOC, "createNewDrawable");
 203        goto cleanup_surf;
 204     }
 205
 206    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
 207                          dri2_dpy->default_swap_interval);
 208
 209    return &dri2_surf->base;
 210
 211  cleanup_drm:
 212    if (dri2_surf->wl_drm_wrapper)
 213       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 214  cleanup_queue:
 215    wl_event_queue_destroy(dri2_surf->wl_queue);
 216  cleanup_surf:
 217    free(dri2_surf);
 218
 219    return NULL;
 220 }
 221
 222 static _EGLSurface *
 223 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 224                               _EGLConfig *conf, void *native_window,
 225                               const EGLint *attrib_list)
 226 {
 227    /* From the EGL_EXT_platform_wayland spec, version 3:
 228     *
 229     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 230     *   that belongs to Wayland. Any such call fails and generates
 231     *   EGL_BAD_PARAMETER.
 232     */
 233    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 234              "Wayland");
 235    return NULL;
 236 }
 237
 238 /**
 239  * Called via eglDestroySurface(), drv->API.DestroySurface().
 240  */
 241 static EGLBoolean
 242 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 243 {
 244    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 245    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 246    int i;
 247
 248    (void) drv;
 249
 250    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 251
 252    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 253       if (dri2_surf->color_buffers[i].wl_buffer)
 254          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 255       if (dri2_surf->color_buffers[i].dri_image)
 256          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 257       if (dri2_surf->color_buffers[i].linear_copy)
 258          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 259       if (dri2_surf->color_buffers[i].data)
 260          munmap(dri2_surf->color_buffers[i].data,
 261                 dri2_surf->color_buffers[i].data_size);
 262    }
 263
 264    if (dri2_dpy->dri2) {
 265       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 266          if (dri2_surf->dri_buffers[i] &&
 267              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 268             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 269                                           dri2_surf->dri_buffers[i]);
 270    }
 271
 272    if (dri2_surf->throttle_callback)
 273       wl_callback_destroy(dri2_surf->throttle_callback);
 274
 275    if (dri2_surf->wl_win) {
 276       dri2_surf->wl_win->private = NULL;
 277       dri2_surf->wl_win->resize_callback = NULL;
 278       dri2_surf->wl_win->destroy_window_callback = NULL;
 279    }
 280
 281    if (dri2_surf->wl_drm_wrapper)
 282       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 283    wl_proxy_wrapper_destroy(dri2_surf->wl_surface_wrapper);
 284    wl_proxy_wrapper_destroy(dri2_surf->wl_dpy_wrapper);
 285    wl_event_queue_destroy(dri2_surf->wl_queue);
 286
 287    free(surf);
 288
 289    return EGL_TRUE;
 290 }
 291
 292 static void
 293 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 294 {
 295    struct dri2_egl_display *dri2_dpy =
 296       dri2_egl_display(dri2_surf->base.Resource.Display);
 297    int i;
 298
 299    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 300       if (dri2_surf->color_buffers[i].wl_buffer &&
 301           !dri2_surf->color_buffers[i].locked)
 302          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 303       if (dri2_surf->color_buffers[i].dri_image)
 304          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 305       if (dri2_surf->color_buffers[i].linear_copy)
 306          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 307       if (dri2_surf->color_buffers[i].data)
 308          munmap(dri2_surf->color_buffers[i].data,
 309                 dri2_surf->color_buffers[i].data_size);
 310
 311       dri2_surf->color_buffers[i].wl_buffer = NULL;
 312       dri2_surf->color_buffers[i].dri_image = NULL;
 313       dri2_surf->color_buffers[i].linear_copy = NULL;
 314       dri2_surf->color_buffers[i].data = NULL;
 315       dri2_surf->color_buffers[i].locked = 0;
 316    }
 317
 318    if (dri2_dpy->dri2) {
 319       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 320          if (dri2_surf->dri_buffers[i] &&
 321              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 322             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 323                                           dri2_surf->dri_buffers[i]);
 324    }
 325 }
 326
 327 static int
 328 get_back_bo(struct dri2_egl_surface *dri2_surf)
 329 {
 330    struct dri2_egl_display *dri2_dpy =
 331       dri2_egl_display(dri2_surf->base.Resource.Display);
 332    int i, use_flags;
 333    unsigned int dri_image_format;
 334
 335    /* currently supports three WL DRM formats,
 336     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 337     * and WL_DRM_FORMAT_RGB565
 338     */
 339    switch (dri2_surf->format) {
 340    case WL_DRM_FORMAT_ARGB8888:
 341       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 342       break;
 343    case WL_DRM_FORMAT_XRGB8888:
 344       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 345       break;
 346    case WL_DRM_FORMAT_RGB565:
 347       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 348       break;
 349    default:
 350       /* format is not supported */
 351       return -1;
 352    }
 353
 354    /* There might be a buffer release already queued that wasn't processed */
 355    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
 356
 357    while (dri2_surf->back == NULL) {
 358       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 359          /* Get an unlocked buffer, preferrably one with a dri_buffer
 360           * already allocated. */
 361          if (dri2_surf->color_buffers[i].locked)
 362             continue;
 363          if (dri2_surf->back == NULL)
 364             dri2_surf->back = &dri2_surf->color_buffers[i];
 365          else if (dri2_surf->back->dri_image == NULL)
 366             dri2_surf->back = &dri2_surf->color_buffers[i];
 367       }
 368
 369       if (dri2_surf->back)
 370          break;
 371
 372       /* If we don't have a buffer, then block on the server to release one for
 373        * us, and try again. */
 374       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_surf->wl_queue) < 0)
 375           return -1;
 376    }
 377
 378    if (dri2_surf->back == NULL)
 379       return -1;
 380
 381    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 382
 383    if (dri2_dpy->is_different_gpu &&
 384        dri2_surf->back->linear_copy == NULL) {
 385        dri2_surf->back->linear_copy =
 386           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 387                                       dri2_surf->base.Width,
 388                                       dri2_surf->base.Height,
 389                                       dri_image_format,
 390                                       use_flags |
 391                                       __DRI_IMAGE_USE_LINEAR,
 392                                       NULL);
 393       if (dri2_surf->back->linear_copy == NULL)
 394           return -1;
 395    }
 396
 397    if (dri2_surf->back->dri_image == NULL) {
 398       dri2_surf->back->dri_image =
 399          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 400                                       dri2_surf->base.Width,
 401                                       dri2_surf->base.Height,
 402                                       dri_image_format,
 403                                       dri2_dpy->is_different_gpu ?
 404                                          0 : use_flags,
 405                                       NULL);
 406       dri2_surf->back->age = 0;
 407    }
 408    if (dri2_surf->back->dri_image == NULL)
 409       return -1;
 410
 411    dri2_surf->back->locked = 1;
 412
 413    return 0;
 414 }
 415
 416
 417 static void
 418 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 419 {
 420    struct dri2_egl_display *dri2_dpy =
 421       dri2_egl_display(dri2_surf->base.Resource.Display);
 422    __DRIimage *image;
 423    int name, pitch;
 424
 425    image = dri2_surf->back->dri_image;
 426
 427    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 428    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 429
 430    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 431    buffer->name = name;
 432    buffer->pitch = pitch;
 433    buffer->cpp = 4;
 434    buffer->flags = 0;
 435 }
 436
 437 static int
 438 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 439            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 440 {
 441    struct dri2_egl_display *dri2_dpy =
 442       dri2_egl_display(dri2_surf->base.Resource.Display);
 443    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 444
 445    if (b == NULL) {
 446       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 447                                          attachment, format,
 448                                          dri2_surf->base.Width,
 449                                          dri2_surf->base.Height);
 450       dri2_surf->dri_buffers[attachment] = b;
 451    }
 452    if (b == NULL)
 453       return -1;
 454
 455    memcpy(buffer, b, sizeof *buffer);
 456
 457    return 0;
 458 }
 459
 460 static int
 461 update_buffers(struct dri2_egl_surface *dri2_surf)
 462 {
 463    struct dri2_egl_display *dri2_dpy =
 464       dri2_egl_display(dri2_surf->base.Resource.Display);
 465    int i;
 466
 467    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 468        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 469
 470       dri2_wl_release_buffers(dri2_surf);
 471
 472       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 473       dri2_surf->base.Height = dri2_surf->wl_win->height;
 474       dri2_surf->dx = dri2_surf->wl_win->dx;
 475       dri2_surf->dy = dri2_surf->wl_win->dy;
 476    }
 477
 478    if (get_back_bo(dri2_surf) < 0) {
 479       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 480       return -1;
 481    }
 482
 483    /* If we have an extra unlocked buffer at this point, we had to do triple
 484     * buffering for a while, but now can go back to just double buffering.
 485     * That means we can free any unlocked buffer now. */
 486    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 487       if (!dri2_surf->color_buffers[i].locked &&
 488           dri2_surf->color_buffers[i].wl_buffer) {
 489          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 490          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 491          if (dri2_dpy->is_different_gpu)
 492             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 493          dri2_surf->color_buffers[i].wl_buffer = NULL;
 494          dri2_surf->color_buffers[i].dri_image = NULL;
 495          dri2_surf->color_buffers[i].linear_copy = NULL;
 496       }
 497    }
 498
 499    return 0;
 500 }
 501
 502 static __DRIbuffer *
 503 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 504                                 int *width, int *height,
 505                                 unsigned int *attachments, int count,
 506                                 int *out_count, void *loaderPrivate)
 507 {
 508    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 509    int i, j;
 510
 511    if (update_buffers(dri2_surf) < 0)
 512       return NULL;
 513
 514    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 515       switch (attachments[i]) {
 516       case __DRI_BUFFER_BACK_LEFT:
 517          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 518          break;
 519       default:
 520          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 521                         &dri2_surf->buffers[j]) < 0) {
 522             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 523             return NULL;
 524          }
 525          break;
 526       }
 527    }
 528
 529    *out_count = j;
 530    if (j == 0)
 531            return NULL;
 532
 533    *width = dri2_surf->base.Width;
 534    *height = dri2_surf->base.Height;
 535
 536    return dri2_surf->buffers;
 537 }
 538
 539 static __DRIbuffer *
 540 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 541                     int *width, int *height,
 542                     unsigned int *attachments, int count,
 543                     int *out_count, void *loaderPrivate)
 544 {
 545    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 546    unsigned int *attachments_with_format;
 547    __DRIbuffer *buffer;
 548    unsigned int bpp;
 549
 550    int i;
 551
 552    switch (dri2_surf->format) {
 553    case WL_DRM_FORMAT_ARGB8888:
 554    case WL_DRM_FORMAT_XRGB8888:
 555       bpp = 32;
 556       break;
 557    case WL_DRM_FORMAT_RGB565:
 558       bpp = 16;
 559       break;
 560    default:
 561       /* format is not supported */
 562       return NULL;
 563    }
 564
 565    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 566    if (!attachments_with_format) {
 567       *out_count = 0;
 568       return NULL;
 569    }
 570
 571    for (i = 0; i < count; ++i) {
 572       attachments_with_format[2*i] = attachments[i];
 573       attachments_with_format[2*i + 1] = bpp;
 574    }
 575
 576    buffer =
 577       dri2_wl_get_buffers_with_format(driDrawable,
 578                                       width, height,
 579                                       attachments_with_format, count,
 580                                       out_count, loaderPrivate);
 581
 582    free(attachments_with_format);
 583
 584    return buffer;
 585 }
 586
 587 static int
 588 image_get_buffers(__DRIdrawable *driDrawable,
 589                   unsigned int format,
 590                   uint32_t *stamp,
 591                   void *loaderPrivate,
 592                   uint32_t buffer_mask,
 593                   struct __DRIimageList *buffers)
 594 {
 595    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 596
 597    if (update_buffers(dri2_surf) < 0)
 598       return 0;
 599
 600    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 601    buffers->back = dri2_surf->back->dri_image;
 602
 603    return 1;
 604 }
 605
 606 static void
 607 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 608 {
 609    (void) driDrawable;
 610    (void) loaderPrivate;
 611 }
 612
 613 static const __DRIdri2LoaderExtension dri2_loader_extension = {
 614    .base = { __DRI_DRI2_LOADER, 3 },
 615
 616    .getBuffers           = dri2_wl_get_buffers,
 617    .flushFrontBuffer     = dri2_wl_flush_front_buffer,
 618    .getBuffersWithFormat = dri2_wl_get_buffers_with_format,
 619 };
 620
 621 static const __DRIimageLoaderExtension image_loader_extension = {
 622    .base = { __DRI_IMAGE_LOADER, 1 },
 623
 624    .getBuffers          = image_get_buffers,
 625    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 626 };
 627
 628 static void
 629 wayland_throttle_callback(void *data,
 630                           struct wl_callback *callback,
 631                           uint32_t time)
 632 {
 633    struct dri2_egl_surface *dri2_surf = data;
 634
 635    dri2_surf->throttle_callback = NULL;
 636    wl_callback_destroy(callback);
 637 }
 638
 639 static const struct wl_callback_listener throttle_listener = {
 640    .done = wayland_throttle_callback
 641 };
 642
 643 static void
 644 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 645 {
 646    struct dri2_egl_display *dri2_dpy =
 647       dri2_egl_display(dri2_surf->base.Resource.Display);
 648    __DRIimage *image;
 649    int fd, stride, name;
 650
 651    if (dri2_surf->current->wl_buffer != NULL)
 652       return;
 653
 654    if (dri2_dpy->is_different_gpu) {
 655       image = dri2_surf->current->linear_copy;
 656    } else {
 657       image = dri2_surf->current->dri_image;
 658    }
 659    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 660       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 661       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 662
 663       dri2_surf->current->wl_buffer =
 664          wl_drm_create_prime_buffer(dri2_surf->wl_drm_wrapper,
 665                                     fd,
 666                                     dri2_surf->base.Width,
 667                                     dri2_surf->base.Height,
 668                                     dri2_surf->format,
 669                                     0, stride,
 670                                     0, 0,
 671                                     0, 0);
 672       close(fd);
 673    } else {
 674       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 675       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 676
 677       dri2_surf->current->wl_buffer =
 678          wl_drm_create_buffer(dri2_surf->wl_drm_wrapper,
 679                               name,
 680                               dri2_surf->base.Width,
 681                               dri2_surf->base.Height,
 682                               stride,
 683                               dri2_surf->format);
 684    }
 685
 686    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 687                           &wl_buffer_listener, dri2_surf);
 688 }
 689
 690 static EGLBoolean
 691 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 692                   const EGLint *rects,
 693                   EGLint n_rects)
 694 {
 695    int i;
 696
 697    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_surface_wrapper)
 698        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 699       return EGL_FALSE;
 700
 701    for (i = 0; i < n_rects; i++) {
 702       const int *rect = &rects[i * 4];
 703
 704       wl_surface_damage_buffer(dri2_surf->wl_surface_wrapper,
 705                                rect[0],
 706                                dri2_surf->base.Height - rect[1] - rect[3],
 707                                rect[2], rect[3]);
 708    }
 709    return EGL_TRUE;
 710 }
 711 /**
 712  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 713  */
 714 static EGLBoolean
 715 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 716                                  _EGLDisplay *disp,
 717                                  _EGLSurface *draw,
 718                                  const EGLint *rects,
 719                                  EGLint n_rects)
 720 {
 721    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 722    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 723    int i;
 724
 725    while (dri2_surf->throttle_callback != NULL)
 726       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 727                                     dri2_surf->wl_queue) == -1)
 728          return -1;
 729
 730    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 731       if (dri2_surf->color_buffers[i].age > 0)
 732          dri2_surf->color_buffers[i].age++;
 733
 734    /* Make sure we have a back buffer in case we're swapping without ever
 735     * rendering. */
 736    if (get_back_bo(dri2_surf) < 0) {
 737       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 738       return EGL_FALSE;
 739    }
 740
 741    if (draw->SwapInterval > 0) {
 742       dri2_surf->throttle_callback =
 743          wl_surface_frame(dri2_surf->wl_surface_wrapper);
 744       wl_callback_add_listener(dri2_surf->throttle_callback,
 745                                &throttle_listener, dri2_surf);
 746    }
 747
 748    dri2_surf->back->age = 1;
 749    dri2_surf->current = dri2_surf->back;
 750    dri2_surf->back = NULL;
 751
 752    create_wl_buffer(dri2_surf);
 753
 754    wl_surface_attach(dri2_surf->wl_surface_wrapper,
 755                      dri2_surf->current->wl_buffer,
 756                      dri2_surf->dx, dri2_surf->dy);
 757
 758    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 759    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 760    /* reset resize growing parameters */
 761    dri2_surf->dx = 0;
 762    dri2_surf->dy = 0;
 763
 764    /* If the compositor doesn't support damage_buffer, we deliberately
 765     * ignore the damage region and post maximum damage, due to
 766     * https://bugs.freedesktop.org/78190 */
 767    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 768       wl_surface_damage(dri2_surf->wl_surface_wrapper,
 769                         0, 0, INT32_MAX, INT32_MAX);
 770
 771    if (dri2_dpy->is_different_gpu) {
 772       _EGLContext *ctx = _eglGetCurrentContext();
 773       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 774       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 775                                  dri2_surf->current->linear_copy,
 776                                  dri2_surf->current->dri_image,
 777                                  0, 0, dri2_surf->base.Width,
 778                                  dri2_surf->base.Height,
 779                                  0, 0, dri2_surf->base.Width,
 780                                  dri2_surf->base.Height, 0);
 781    }
 782
 783    dri2_flush_drawable_for_swapbuffers(disp, draw);
 784    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 785
 786    wl_surface_commit(dri2_surf->wl_surface_wrapper);
 787
 788    /* If we're not waiting for a frame callback then we'll at least throttle
 789     * to a sync callback so that we always give a chance for the compositor to
 790     * handle the commit and send a release event before checking for a free
 791     * buffer */
 792    if (dri2_surf->throttle_callback == NULL) {
 793       dri2_surf->throttle_callback = wl_display_sync(dri2_surf->wl_dpy_wrapper);
 794       wl_callback_add_listener(dri2_surf->throttle_callback,
 795                                &throttle_listener, dri2_surf);
 796    }
 797
 798    wl_display_flush(dri2_dpy->wl_dpy);
 799
 800    return EGL_TRUE;
 801 }
 802
 803 static EGLint
 804 dri2_wl_query_buffer_age(_EGLDriver *drv,
 805                          _EGLDisplay *disp, _EGLSurface *surface)
 806 {
 807    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 808
 809    if (get_back_bo(dri2_surf) < 0) {
 810       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 811       return 0;
 812    }
 813
 814    return dri2_surf->back->age;
 815 }
 816
 817 static EGLBoolean
 818 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 819 {
 820    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 821 }
 822
 823 static struct wl_buffer *
 824 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 825                                           _EGLDisplay *disp,
 826                                           _EGLImage *img)
 827 {
 828    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 829    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 830    __DRIimage *image = dri2_img->dri_image;
 831    struct wl_buffer *buffer;
 832    int width, height, format, pitch;
 833    enum wl_drm_format wl_format;
 834
 835    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 836
 837    switch (format) {
 838    case __DRI_IMAGE_FORMAT_ARGB8888:
 839       if (!(dri2_dpy->formats & HAS_ARGB8888))
 840          goto bad_format;
 841       wl_format = WL_DRM_FORMAT_ARGB8888;
 842       break;
 843    case __DRI_IMAGE_FORMAT_XRGB8888:
 844       if (!(dri2_dpy->formats & HAS_XRGB8888))
 845          goto bad_format;
 846       wl_format = WL_DRM_FORMAT_XRGB8888;
 847       break;
 848    default:
 849       goto bad_format;
 850    }
 851
 852    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 853    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 854    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 855
 856    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 857       int fd;
 858
 859       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 860
 861       buffer =
 862          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 863                                     fd,
 864                                     width, height,
 865                                     wl_format,
 866                                     0, pitch,
 867                                     0, 0,
 868                                     0, 0);
 869
 870       close(fd);
 871    } else {
 872       int name;
 873
 874       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 875
 876       buffer =
 877          wl_drm_create_buffer(dri2_dpy->wl_drm,
 878                               name,
 879                               width, height,
 880                               pitch,
 881                               wl_format);
 882    }
 883
 884    /* The buffer object will have been created with our internal event queue
 885     * because it is using the wl_drm object as a proxy factory. We want the
 886     * buffer to be used by the application so we'll reset it to the display's
 887     * default event queue */
 888    if (buffer)
 889       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 890
 891    return buffer;
 892
 893 bad_format:
 894    _eglError(EGL_BAD_MATCH, "unsupported image format");
 895    return NULL;
 896 }
 897
 898 static int
 899 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 900 {
 901    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 902    int ret = 0;
 903
 904    if (dri2_dpy->is_render_node) {
 905       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 906                             "authenticate for render-nodes");
 907       return 0;
 908    }
 909    dri2_dpy->authenticated = 0;
 910
 911    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 912    if (roundtrip(dri2_dpy) < 0)
 913       ret = -1;
 914
 915    if (!dri2_dpy->authenticated)
 916       ret = -1;
 917
 918    /* reset authenticated */
 919    dri2_dpy->authenticated = 1;
 920
 921    return ret;
 922 }
 923
 924 static void
 925 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 926 {
 927    struct dri2_egl_display *dri2_dpy = data;
 928    drm_magic_t magic;
 929
 930    dri2_dpy->device_name = strdup(device);
 931    if (!dri2_dpy->device_name)
 932       return;
 933
 934    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 935    if (dri2_dpy->fd == -1) {
 936       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 937               dri2_dpy->device_name, strerror(errno));
 938       return;
 939    }
 940
 941    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 942       dri2_dpy->authenticated = 1;
 943    } else {
 944       drmGetMagic(dri2_dpy->fd, &magic);
 945       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 946    }
 947 }
 948
 949 static void
 950 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 951 {
 952    struct dri2_egl_display *dri2_dpy = data;
 953
 954    switch (format) {
 955    case WL_DRM_FORMAT_ARGB8888:
 956       dri2_dpy->formats |= HAS_ARGB8888;
 957       break;
 958    case WL_DRM_FORMAT_XRGB8888:
 959       dri2_dpy->formats |= HAS_XRGB8888;
 960       break;
 961    case WL_DRM_FORMAT_RGB565:
 962       dri2_dpy->formats |= HAS_RGB565;
 963       break;
 964    }
 965 }
 966
 967 static void
 968 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 969 {
 970    struct dri2_egl_display *dri2_dpy = data;
 971
 972    dri2_dpy->capabilities = value;
 973 }
 974
 975 static void
 976 drm_handle_authenticated(void *data, struct wl_drm *drm)
 977 {
 978    struct dri2_egl_display *dri2_dpy = data;
 979
 980    dri2_dpy->authenticated = 1;
 981 }
 982
 983 static const struct wl_drm_listener drm_listener = {
 984    .device = drm_handle_device,
 985    .format = drm_handle_format,
 986    .authenticated = drm_handle_authenticated,
 987    .capabilities = drm_handle_capabilities
 988 };
 989
 990 static void
 991 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 992                        const char *interface, uint32_t version)
 993 {
 994    struct dri2_egl_display *dri2_dpy = data;
 995
 996    if (version > 1)
 997       version = 2;
 998    if (strcmp(interface, "wl_drm") == 0) {
 999       dri2_dpy->wl_drm =
1000          wl_registry_bind(registry, name, &wl_drm_interface, version);
1001       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
1002    }
1003 }
1004
1005 static void
1006 registry_handle_global_remove(void *data, struct wl_registry *registry,
1007                               uint32_t name)
1008 {
1009 }
1010
1011 static const struct wl_registry_listener registry_listener_drm = {
1012    .global = registry_handle_global_drm,
1013    .global_remove = registry_handle_global_remove
1014 };
1015
1016 static EGLBoolean
1017 dri2_wl_swap_interval(_EGLDriver *drv,
1018                    _EGLDisplay *disp,
1019                    _EGLSurface *surf,
1020                    EGLint interval)
1021 {
1022    if (interval > surf->Config->MaxSwapInterval)
1023       interval = surf->Config->MaxSwapInterval;
1024    else if (interval < surf->Config->MinSwapInterval)
1025       interval = surf->Config->MinSwapInterval;
1026
1027    surf->SwapInterval = interval;
1028
1029    return EGL_TRUE;
1030 }
1031
1032 static void
1033 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1034 {
1035    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1036
1037    /* We can't use values greater than 1 on Wayland because we are using the
1038     * frame callback to synchronise the frame and the only way we be sure to
1039     * get a frame callback is to attach a new buffer. Therefore we can't just
1040     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1041
1042    if (dri2_dpy->config)
1043       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1044                                      "vblank_mode", &vblank_mode);
1045    switch (vblank_mode) {
1046    case DRI_CONF_VBLANK_NEVER:
1047       dri2_dpy->min_swap_interval = 0;
1048       dri2_dpy->max_swap_interval = 0;
1049       dri2_dpy->default_swap_interval = 0;
1050       break;
1051    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1052       dri2_dpy->min_swap_interval = 1;
1053       dri2_dpy->max_swap_interval = 1;
1054       dri2_dpy->default_swap_interval = 1;
1055       break;
1056    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1057       dri2_dpy->min_swap_interval = 0;
1058       dri2_dpy->max_swap_interval = 1;
1059       dri2_dpy->default_swap_interval = 0;
1060       break;
1061    default:
1062    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1063       dri2_dpy->min_swap_interval = 0;
1064       dri2_dpy->max_swap_interval = 1;
1065       dri2_dpy->default_swap_interval = 1;
1066       break;
1067    }
1068 }
1069
1070 static const struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1071    .authenticate = dri2_wl_authenticate,
1072    .create_window_surface = dri2_wl_create_window_surface,
1073    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1074    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1075    .destroy_surface = dri2_wl_destroy_surface,
1076    .create_image = dri2_create_image_khr,
1077    .swap_interval = dri2_wl_swap_interval,
1078    .swap_buffers = dri2_wl_swap_buffers,
1079    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1080    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1081    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1082    .copy_buffers = dri2_fallback_copy_buffers,
1083    .query_buffer_age = dri2_wl_query_buffer_age,
1084    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1085    .get_sync_values = dri2_fallback_get_sync_values,
1086    .get_dri_drawable = dri2_surface_get_dri_drawable,
1087 };
1088
1089 static const __DRIextension *dri2_loader_extensions[] = {
1090    &dri2_loader_extension.base,
1091    &image_loader_extension.base,
1092    &image_lookup_extension.base,
1093    &use_invalidate.base,
1094    NULL,
1095 };
1096
1097 static const __DRIextension *image_loader_extensions[] = {
1098    &image_loader_extension.base,
1099    &image_lookup_extension.base,
1100    &use_invalidate.base,
1101    NULL,
1102 };
1103
1104 static EGLBoolean
1105 dri2_wl_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
1106 {
1107    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1108    static const struct {
1109       const char *format_name;
1110       int has_format;
1111       unsigned int rgba_masks[4];
1112    } visuals[] = {
1113       { "XRGB8888", HAS_XRGB8888, { 0xff0000, 0xff00, 0x00ff, 0xff000000 } },
1114       { "ARGB8888", HAS_ARGB8888, { 0xff0000, 0xff00, 0x00ff, 0 } },
1115       { "RGB565",   HAS_RGB565,   { 0x00f800, 0x07e0, 0x001f, 0 } },
1116    };
1117    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
1118    unsigned int count, i, j;
1119
1120    count = 0;
1121    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1122       for (j = 0; j < ARRAY_SIZE(visuals); j++) {
1123          struct dri2_egl_config *dri2_conf;
1124
1125          if (!(dri2_dpy->formats & visuals[j].has_format))
1126             continue;
1127
1128          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
1129                count + 1, EGL_WINDOW_BIT, NULL, visuals[j].rgba_masks);
1130          if (dri2_conf) {
1131             count++;
1132             format_count[j]++;
1133          }
1134       }
1135    }
1136
1137    for (i = 0; i < ARRAY_SIZE(format_count); i++) {
1138       if (!format_count[i]) {
1139          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
1140                  visuals[i].format_name);
1141       }
1142    }
1143
1144    return (count != 0);
1145 }
1146
1147 static EGLBoolean
1148 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1149 {
1150    struct dri2_egl_display *dri2_dpy;
1151
1152    loader_set_logger(_eglLog);
1153
1154    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1155    if (!dri2_dpy)
1156       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1157
1158    dri2_dpy->fd = -1;
1159    disp->DriverData = (void *) dri2_dpy;
1160    if (disp->PlatformDisplay == NULL) {
1161       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1162       if (dri2_dpy->wl_dpy == NULL)
1163          goto cleanup;
1164       dri2_dpy->own_device = 1;
1165    } else {
1166       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1167    }
1168
1169    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1170
1171    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1172    if (dri2_dpy->wl_dpy_wrapper == NULL)
1173       goto cleanup;
1174
1175    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1176                       dri2_dpy->wl_queue);
1177
1178    if (dri2_dpy->own_device)
1179       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1180
1181    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1182    wl_registry_add_listener(dri2_dpy->wl_registry,
1183                             &registry_listener_drm, dri2_dpy);
1184    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1185       goto cleanup;
1186
1187    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1188       goto cleanup;
1189
1190    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1191       goto cleanup;
1192
1193    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1194                                                &dri2_dpy->is_different_gpu);
1195    if (dri2_dpy->is_different_gpu) {
1196       free(dri2_dpy->device_name);
1197       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1198       if (!dri2_dpy->device_name) {
1199          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1200                                   "for requested GPU");
1201          goto cleanup;
1202       }
1203    }
1204
1205    /* we have to do the check now, because loader_get_user_preferred_fd
1206     * will return a render-node when the requested gpu is different
1207     * to the server, but also if the client asks for the same gpu than
1208     * the server by requesting its pci-id */
1209    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1210
1211    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
1212    if (dri2_dpy->driver_name == NULL) {
1213       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1214       goto cleanup;
1215    }
1216
1217    if (!dri2_load_driver(disp))
1218       goto cleanup;
1219
1220    /* render nodes cannot use Gem names, and thus do not support
1221     * the __DRI_DRI2_LOADER extension */
1222    if (!dri2_dpy->is_render_node)
1223       dri2_dpy->loader_extensions = dri2_loader_extensions;
1224    else
1225       dri2_dpy->loader_extensions = image_loader_extensions;
1226
1227    if (!dri2_create_screen(disp))
1228       goto cleanup;
1229
1230    if (!dri2_setup_extensions(disp))
1231       goto cleanup;
1232
1233    dri2_setup_screen(disp);
1234
1235    dri2_wl_setup_swap_interval(dri2_dpy);
1236
1237    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1238     * createImageFromFds support indicates that Prime export/import
1239     * is supported by the driver. Fall back to
1240     * gem names if we don't have Prime support. */
1241
1242    if (dri2_dpy->image->base.version < 7 ||
1243        dri2_dpy->image->createImageFromFds == NULL)
1244       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1245
1246    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1247     * The server needs to accept them */
1248    if (dri2_dpy->is_render_node &&
1249        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1250       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1251       goto cleanup;
1252    }
1253
1254    if (dri2_dpy->is_different_gpu &&
1255        (dri2_dpy->image->base.version < 9 ||
1256         dri2_dpy->image->blitImage == NULL)) {
1257       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1258                             "Image extension in the driver is not "
1259                             "compatible. Version 9 or later and blitImage() "
1260                             "are required");
1261       goto cleanup;
1262    }
1263
1264    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1265       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1266       goto cleanup;
1267    }
1268
1269    dri2_set_WL_bind_wayland_display(drv, disp);
1270    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1271     * because the buffer of the EGLImage has likely a tiling mode the server
1272     * gpu won't support. These is no way to check for now. Thus do not support the
1273     * extension */
1274    if (!dri2_dpy->is_different_gpu)
1275       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1276
1277    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1278
1279    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1280
1281    /* Fill vtbl last to prevent accidentally calling virtual function during
1282     * initialization.
1283     */
1284    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1285
1286    return EGL_TRUE;
1287
1288  cleanup:
1289    dri2_display_destroy(disp);
1290    return EGL_FALSE;
1291 }
1292
1293 static int
1294 dri2_wl_swrast_get_stride_for_format(int format, int w)
1295 {
1296    if (format == WL_SHM_FORMAT_RGB565)
1297       return 2 * w;
1298    else /* ARGB8888 || XRGB8888 */
1299       return 4 * w;
1300 }
1301
1302 /*
1303  * Taken from weston shared/os-compatibility.c
1304  */
1305
1306 #ifndef HAVE_MKOSTEMP
1307
1308 static int
1309 set_cloexec_or_close(int fd)
1310 {
1311    long flags;
1312
1313    if (fd == -1)
1314       return -1;
1315
1316    flags = fcntl(fd, F_GETFD);
1317    if (flags == -1)
1318       goto err;
1319
1320    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1321       goto err;
1322
1323    return fd;
1324
1325 err:
1326    close(fd);
1327    return -1;
1328 }
1329
1330 #endif
1331
1332 /*
1333  * Taken from weston shared/os-compatibility.c
1334  */
1335
1336 static int
1337 create_tmpfile_cloexec(char *tmpname)
1338 {
1339    int fd;
1340
1341 #ifdef HAVE_MKOSTEMP
1342    fd = mkostemp(tmpname, O_CLOEXEC);
1343    if (fd >= 0)
1344       unlink(tmpname);
1345 #else
1346    fd = mkstemp(tmpname);
1347    if (fd >= 0) {
1348       fd = set_cloexec_or_close(fd);
1349       unlink(tmpname);
1350    }
1351 #endif
1352
1353    return fd;
1354 }
1355
1356 /*
1357  * Taken from weston shared/os-compatibility.c
1358  *
1359  * Create a new, unique, anonymous file of the given size, and
1360  * return the file descriptor for it. The file descriptor is set
1361  * CLOEXEC. The file is immediately suitable for mmap()'ing
1362  * the given size at offset zero.
1363  *
1364  * The file should not have a permanent backing store like a disk,
1365  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1366  *
1367  * The file name is deleted from the file system.
1368  *
1369  * The file is suitable for buffer sharing between processes by
1370  * transmitting the file descriptor over Unix sockets using the
1371  * SCM_RIGHTS methods.
1372  *
1373  * If the C library implements posix_fallocate(), it is used to
1374  * guarantee that disk space is available for the file at the
1375  * given size. If disk space is insufficent, errno is set to ENOSPC.
1376  * If posix_fallocate() is not supported, program may receive
1377  * SIGBUS on accessing mmap()'ed file contents instead.
1378  */
1379 static int
1380 os_create_anonymous_file(off_t size)
1381 {
1382    static const char template[] = "/mesa-shared-XXXXXX";
1383    const char *path;
1384    char *name;
1385    int fd;
1386    int ret;
1387
1388    path = getenv("XDG_RUNTIME_DIR");
1389    if (!path) {
1390       errno = ENOENT;
1391       return -1;
1392    }
1393
1394    name = malloc(strlen(path) + sizeof(template));
1395    if (!name)
1396       return -1;
1397
1398    strcpy(name, path);
1399    strcat(name, template);
1400
1401    fd = create_tmpfile_cloexec(name);
1402
1403    free(name);
1404
1405    if (fd < 0)
1406       return -1;
1407
1408    ret = ftruncate(fd, size);
1409    if (ret < 0) {
1410       close(fd);
1411       return -1;
1412    }
1413
1414    return fd;
1415 }
1416
1417
1418 static EGLBoolean
1419 dri2_wl_swrast_allocate_buffer(struct dri2_egl_surface *dri2_surf,
1420                                int format, int w, int h,
1421                                void **data, int *size,
1422                                struct wl_buffer **buffer)
1423 {
1424    struct dri2_egl_display *dri2_dpy =
1425       dri2_egl_display(dri2_surf->base.Resource.Display);
1426    struct wl_shm_pool *pool;
1427    int fd, stride, size_map;
1428    void *data_map;
1429
1430    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1431    size_map = h * stride;
1432
1433    /* Create a sharable buffer */
1434    fd = os_create_anonymous_file(size_map);
1435    if (fd < 0)
1436       return EGL_FALSE;
1437
1438    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1439    if (data_map == MAP_FAILED) {
1440       close(fd);
1441       return EGL_FALSE;
1442    }
1443
1444    /* Share it in a wl_buffer */
1445    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1446    wl_proxy_set_queue((struct wl_proxy *)pool, dri2_surf->wl_queue);
1447    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1448    wl_shm_pool_destroy(pool);
1449    close(fd);
1450
1451    *data = data_map;
1452    *size = size_map;
1453    return EGL_TRUE;
1454 }
1455
1456 static int
1457 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1458 {
1459    struct dri2_egl_display *dri2_dpy =
1460       dri2_egl_display(dri2_surf->base.Resource.Display);
1461    int i;
1462
1463    /* we need to do the following operations only once per frame */
1464    if (dri2_surf->back)
1465       return 0;
1466
1467    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1468        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1469
1470       dri2_wl_release_buffers(dri2_surf);
1471
1472       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1473       dri2_surf->base.Height = dri2_surf->wl_win->height;
1474       dri2_surf->dx = dri2_surf->wl_win->dx;
1475       dri2_surf->dy = dri2_surf->wl_win->dy;
1476       dri2_surf->current = NULL;
1477    }
1478
1479    /* find back buffer */
1480
1481    /* There might be a buffer release already queued that wasn't processed */
1482    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
1483
1484    /* try get free buffer already created */
1485    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1486       if (!dri2_surf->color_buffers[i].locked &&
1487           dri2_surf->color_buffers[i].wl_buffer) {
1488           dri2_surf->back = &dri2_surf->color_buffers[i];
1489           break;
1490       }
1491    }
1492
1493    /* else choose any another free location */
1494    if (!dri2_surf->back) {
1495       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1496          if (!dri2_surf->color_buffers[i].locked) {
1497              dri2_surf->back = &dri2_surf->color_buffers[i];
1498              if (!dri2_wl_swrast_allocate_buffer(dri2_surf,
1499                                                  dri2_surf->format,
1500                                                  dri2_surf->base.Width,
1501                                                  dri2_surf->base.Height,
1502                                                  &dri2_surf->back->data,
1503                                                  &dri2_surf->back->data_size,
1504                                                  &dri2_surf->back->wl_buffer)) {
1505                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1506                  return -1;
1507              }
1508              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1509                                     &wl_buffer_listener, dri2_surf);
1510              break;
1511          }
1512       }
1513    }
1514
1515    if (!dri2_surf->back) {
1516       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1517       return -1;
1518    }
1519
1520    dri2_surf->back->locked = 1;
1521
1522    /* If we have an extra unlocked buffer at this point, we had to do triple
1523     * buffering for a while, but now can go back to just double buffering.
1524     * That means we can free any unlocked buffer now. */
1525    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1526       if (!dri2_surf->color_buffers[i].locked &&
1527           dri2_surf->color_buffers[i].wl_buffer) {
1528          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1529          munmap(dri2_surf->color_buffers[i].data,
1530                 dri2_surf->color_buffers[i].data_size);
1531          dri2_surf->color_buffers[i].wl_buffer = NULL;
1532          dri2_surf->color_buffers[i].data = NULL;
1533       }
1534    }
1535
1536    return 0;
1537 }
1538
1539 static void*
1540 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1541 {
1542    /* if there has been a resize: */
1543    if (!dri2_surf->current)
1544       return NULL;
1545
1546    return dri2_surf->current->data;
1547 }
1548
1549 static void*
1550 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1551 {
1552    assert(dri2_surf->back);
1553    return dri2_surf->back->data;
1554 }
1555
1556 static void
1557 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1558 {
1559    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1560
1561    while (dri2_surf->throttle_callback != NULL)
1562       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1563                                     dri2_surf->wl_queue) == -1)
1564          return;
1565
1566    if (dri2_surf->base.SwapInterval > 0) {
1567       dri2_surf->throttle_callback =
1568          wl_surface_frame(dri2_surf->wl_surface_wrapper);
1569       wl_callback_add_listener(dri2_surf->throttle_callback,
1570                                &throttle_listener, dri2_surf);
1571    }
1572
1573    dri2_surf->current = dri2_surf->back;
1574    dri2_surf->back = NULL;
1575
1576    wl_surface_attach(dri2_surf->wl_surface_wrapper,
1577                      dri2_surf->current->wl_buffer,
1578                      dri2_surf->dx, dri2_surf->dy);
1579
1580    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1581    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1582    /* reset resize growing parameters */
1583    dri2_surf->dx = 0;
1584    dri2_surf->dy = 0;
1585
1586    wl_surface_damage(dri2_surf->wl_surface_wrapper,
1587                      0, 0, INT32_MAX, INT32_MAX);
1588    wl_surface_commit(dri2_surf->wl_surface_wrapper);
1589
1590    /* If we're not waiting for a frame callback then we'll at least throttle
1591     * to a sync callback so that we always give a chance for the compositor to
1592     * handle the commit and send a release event before checking for a free
1593     * buffer */
1594    if (dri2_surf->throttle_callback == NULL) {
1595       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy_wrapper);
1596       wl_callback_add_listener(dri2_surf->throttle_callback,
1597                                &throttle_listener, dri2_surf);
1598    }
1599
1600    wl_display_flush(dri2_dpy->wl_dpy);
1601 }
1602
1603 static void
1604 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1605                                  int *x, int *y, int *w, int *h,
1606                                  void *loaderPrivate)
1607 {
1608    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1609
1610    (void) swrast_update_buffers(dri2_surf);
1611    *x = 0;
1612    *y = 0;
1613    *w = dri2_surf->base.Width;
1614    *h = dri2_surf->base.Height;
1615 }
1616
1617 static void
1618 dri2_wl_swrast_get_image(__DRIdrawable * read,
1619                          int x, int y, int w, int h,
1620                          char *data, void *loaderPrivate)
1621 {
1622    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1623    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1624    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1625    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1626    int dst_stride = copy_width;
1627    char *src, *dst;
1628
1629    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1630    if (!src) {
1631       memset(data, 0, copy_width * h);
1632       return;
1633    }
1634
1635    assert(data != src);
1636    assert(copy_width <= src_stride);
1637
1638    src += x_offset;
1639    src += y * src_stride;
1640    dst = data;
1641
1642    if (copy_width > src_stride-x_offset)
1643       copy_width = src_stride-x_offset;
1644    if (h > dri2_surf->base.Height-y)
1645       h = dri2_surf->base.Height-y;
1646
1647    for (; h>0; h--) {
1648       memcpy(dst, src, copy_width);
1649       src += src_stride;
1650       dst += dst_stride;
1651    }
1652 }
1653
1654 static void
1655 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1656                          int x, int y, int w, int h, int stride,
1657                          char *data, void *loaderPrivate)
1658 {
1659    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1660    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1661    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1662    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1663    char *src, *dst;
1664
1665    assert(copy_width <= stride);
1666
1667    (void) swrast_update_buffers(dri2_surf);
1668    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1669
1670    /* partial copy, copy old content */
1671    if (copy_width < dst_stride)
1672       dri2_wl_swrast_get_image(draw, 0, 0,
1673                                dri2_surf->base.Width, dri2_surf->base.Height,
1674                                dst, loaderPrivate);
1675
1676    dst += x_offset;
1677    dst += y * dst_stride;
1678
1679    src = data;
1680
1681    /* drivers expect we do these checks (and some rely on it) */
1682    if (copy_width > dst_stride-x_offset)
1683       copy_width = dst_stride-x_offset;
1684    if (h > dri2_surf->base.Height-y)
1685       h = dri2_surf->base.Height-y;
1686
1687    for (; h>0; h--) {
1688       memcpy(dst, src, copy_width);
1689       src += stride;
1690       dst += dst_stride;
1691    }
1692    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1693 }
1694
1695 static void
1696 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1697                          int x, int y, int w, int h,
1698                          char *data, void *loaderPrivate)
1699 {
1700    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1701    int stride;
1702
1703    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1704    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1705                              stride, data, loaderPrivate);
1706 }
1707
1708 static EGLBoolean
1709 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1710 {
1711    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1712    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1713
1714    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1715    return EGL_TRUE;
1716 }
1717
1718 static void
1719 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1720 {
1721    struct dri2_egl_display *dri2_dpy = data;
1722
1723    switch (format) {
1724    case WL_SHM_FORMAT_ARGB8888:
1725       dri2_dpy->formats |= HAS_ARGB8888;
1726       break;
1727    case WL_SHM_FORMAT_XRGB8888:
1728       dri2_dpy->formats |= HAS_XRGB8888;
1729       break;
1730    case WL_SHM_FORMAT_RGB565:
1731       dri2_dpy->formats |= HAS_RGB565;
1732       break;
1733    }
1734 }
1735
1736 static const struct wl_shm_listener shm_listener = {
1737    .format = shm_handle_format
1738 };
1739
1740 static void
1741 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1742                               const char *interface, uint32_t version)
1743 {
1744    struct dri2_egl_display *dri2_dpy = data;
1745
1746    if (strcmp(interface, "wl_shm") == 0) {
1747       dri2_dpy->wl_shm =
1748          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1749       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1750    }
1751 }
1752
1753 static const struct wl_registry_listener registry_listener_swrast = {
1754    .global = registry_handle_global_swrast,
1755    .global_remove = registry_handle_global_remove
1756 };
1757
1758 static const struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1759    .authenticate = NULL,
1760    .create_window_surface = dri2_wl_create_window_surface,
1761    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1762    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1763    .destroy_surface = dri2_wl_destroy_surface,
1764    .create_image = dri2_fallback_create_image_khr,
1765    .swap_interval = dri2_wl_swap_interval,
1766    .swap_buffers = dri2_wl_swrast_swap_buffers,
1767    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1768    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1769    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1770    .copy_buffers = dri2_fallback_copy_buffers,
1771    .query_buffer_age = dri2_fallback_query_buffer_age,
1772    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1773    .get_sync_values = dri2_fallback_get_sync_values,
1774    .get_dri_drawable = dri2_surface_get_dri_drawable,
1775 };
1776
1777 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1778    .base = { __DRI_SWRAST_LOADER, 2 },
1779
1780    .getDrawableInfo = dri2_wl_swrast_get_drawable_info,
1781    .putImage        = dri2_wl_swrast_put_image,
1782    .getImage        = dri2_wl_swrast_get_image,
1783    .putImage2       = dri2_wl_swrast_put_image2,
1784 };
1785
1786 static const __DRIextension *swrast_loader_extensions[] = {
1787    &swrast_loader_extension.base,
1788    NULL,
1789 };
1790
1791 static EGLBoolean
1792 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1793 {
1794    struct dri2_egl_display *dri2_dpy;
1795
1796    loader_set_logger(_eglLog);
1797
1798    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1799    if (!dri2_dpy)
1800       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1801
1802    dri2_dpy->fd = -1;
1803    disp->DriverData = (void *) dri2_dpy;
1804    if (disp->PlatformDisplay == NULL) {
1805       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1806       if (dri2_dpy->wl_dpy == NULL)
1807          goto cleanup;
1808       dri2_dpy->own_device = 1;
1809    } else {
1810       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1811    }
1812
1813    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1814
1815    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1816    if (dri2_dpy->wl_dpy_wrapper == NULL)
1817       goto cleanup;
1818
1819    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1820                       dri2_dpy->wl_queue);
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_wrapper);
1826    wl_registry_add_listener(dri2_dpy->wl_registry,
1827                             &registry_listener_swrast, dri2_dpy);
1828
1829    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1830       goto cleanup;
1831
1832    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1833       goto cleanup;
1834
1835    dri2_dpy->driver_name = strdup("swrast");
1836    if (!dri2_load_driver_swrast(disp))
1837       goto cleanup;
1838
1839    dri2_dpy->loader_extensions = swrast_loader_extensions;
1840
1841    if (!dri2_create_screen(disp))
1842       goto cleanup;
1843
1844    if (!dri2_setup_extensions(disp))
1845       goto cleanup;
1846
1847    dri2_setup_screen(disp);
1848
1849    dri2_wl_setup_swap_interval(dri2_dpy);
1850
1851    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1852       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1853       goto cleanup;
1854    }
1855
1856    /* Fill vtbl last to prevent accidentally calling virtual function during
1857     * initialization.
1858     */
1859    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1860
1861    return EGL_TRUE;
1862
1863  cleanup:
1864    dri2_display_destroy(disp);
1865    return EGL_FALSE;
1866 }
1867
1868 EGLBoolean
1869 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1870 {
1871    EGLBoolean initialized = EGL_TRUE;
1872
1873    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1874
1875    if (hw_accel) {
1876       if (!dri2_initialize_wayland_drm(drv, disp)) {
1877          initialized = dri2_initialize_wayland_swrast(drv, disp);
1878       }
1879    } else {
1880       initialized = dri2_initialize_wayland_swrast(drv, disp);
1881    }
1882
1883    return initialized;
1884
1885 }