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->dri2) {
 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       if (conf->RedSize == 5)
 136          dri2_surf->format = WL_SHM_FORMAT_RGB565;
 137       else if (conf->AlphaSize == 0)
 138          dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
 139       else
 140          dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
 141    }
 142
 143    if (!window) {
 144       _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 145       goto cleanup_surf;
 146    }
 147
 148    dri2_surf->wl_win = window;
 149    dri2_surf->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 150    if (!dri2_surf->wl_queue) {
 151       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 152       goto cleanup_surf;
 153    }
 154
 155    if (dri2_dpy->wl_drm) {
 156       dri2_surf->wl_drm_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_drm);
 157       if (!dri2_surf->wl_drm_wrapper) {
 158          _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 159          goto cleanup_queue;
 160       }
 161       wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_drm_wrapper,
 162                          dri2_surf->wl_queue);
 163    }
 164
 165    dri2_surf->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
 166    if (!dri2_surf->wl_dpy_wrapper) {
 167       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 168       goto cleanup_drm;
 169    }
 170    wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_dpy_wrapper,
 171                       dri2_surf->wl_queue);
 172
 173    dri2_surf->wl_surface_wrapper = wl_proxy_create_wrapper(window->surface);
 174    if (!dri2_surf->wl_surface_wrapper) {
 175       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 176       goto cleanup_drm;
 177    }
 178    wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_surface_wrapper,
 179                       dri2_surf->wl_queue);
 180
 181    dri2_surf->wl_win->private = dri2_surf;
 182    dri2_surf->wl_win->destroy_window_callback = destroy_window_callback;
 183
 184    dri2_surf->base.Width =  -1;
 185    dri2_surf->base.Height = -1;
 186
 187    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 188                                 dri2_surf->base.GLColorspace);
 189
 190    if (dri2_dpy->dri2) {
 191       dri2_surf->wl_win->resize_callback = resize_callback;
 192
 193       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
 194    } else {
 195       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
 196    }
 197
 198    dri2_surf->dri_drawable = (*createNewDrawable)(dri2_dpy->dri_screen, config,
 199                                                   dri2_surf);
 200     if (dri2_surf->dri_drawable == NULL) {
 201       _eglError(EGL_BAD_ALLOC, "createNewDrawable");
 202        goto cleanup_surf;
 203     }
 204
 205    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
 206                          dri2_dpy->default_swap_interval);
 207
 208    return &dri2_surf->base;
 209
 210  cleanup_drm:
 211    if (dri2_surf->wl_drm_wrapper)
 212       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 213  cleanup_queue:
 214    wl_event_queue_destroy(dri2_surf->wl_queue);
 215  cleanup_surf:
 216    free(dri2_surf);
 217
 218    return NULL;
 219 }
 220
 221 static _EGLSurface *
 222 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 223                               _EGLConfig *conf, void *native_window,
 224                               const EGLint *attrib_list)
 225 {
 226    /* From the EGL_EXT_platform_wayland spec, version 3:
 227     *
 228     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 229     *   that belongs to Wayland. Any such call fails and generates
 230     *   EGL_BAD_PARAMETER.
 231     */
 232    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 233              "Wayland");
 234    return NULL;
 235 }
 236
 237 /**
 238  * Called via eglDestroySurface(), drv->API.DestroySurface().
 239  */
 240 static EGLBoolean
 241 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 242 {
 243    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 244    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 245    int i;
 246
 247    (void) drv;
 248
 249    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 250
 251    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 252       if (dri2_surf->color_buffers[i].wl_buffer)
 253          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 254       if (dri2_surf->color_buffers[i].dri_image)
 255          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 256       if (dri2_surf->color_buffers[i].linear_copy)
 257          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 258       if (dri2_surf->color_buffers[i].data)
 259          munmap(dri2_surf->color_buffers[i].data,
 260                 dri2_surf->color_buffers[i].data_size);
 261    }
 262
 263    if (dri2_dpy->dri2) {
 264       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 265          if (dri2_surf->dri_buffers[i] &&
 266              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 267             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 268                                           dri2_surf->dri_buffers[i]);
 269    }
 270
 271    if (dri2_surf->throttle_callback)
 272       wl_callback_destroy(dri2_surf->throttle_callback);
 273
 274    if (dri2_surf->wl_win) {
 275       dri2_surf->wl_win->private = NULL;
 276       dri2_surf->wl_win->resize_callback = NULL;
 277       dri2_surf->wl_win->destroy_window_callback = NULL;
 278    }
 279
 280    if (dri2_surf->wl_drm_wrapper)
 281       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 282    wl_proxy_wrapper_destroy(dri2_surf->wl_surface_wrapper);
 283    wl_proxy_wrapper_destroy(dri2_surf->wl_dpy_wrapper);
 284    wl_event_queue_destroy(dri2_surf->wl_queue);
 285
 286    free(surf);
 287
 288    return EGL_TRUE;
 289 }
 290
 291 static void
 292 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 293 {
 294    struct dri2_egl_display *dri2_dpy =
 295       dri2_egl_display(dri2_surf->base.Resource.Display);
 296    int i;
 297
 298    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 299       if (dri2_surf->color_buffers[i].wl_buffer &&
 300           !dri2_surf->color_buffers[i].locked)
 301          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 302       if (dri2_surf->color_buffers[i].dri_image)
 303          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 304       if (dri2_surf->color_buffers[i].linear_copy)
 305          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 306       if (dri2_surf->color_buffers[i].data)
 307          munmap(dri2_surf->color_buffers[i].data,
 308                 dri2_surf->color_buffers[i].data_size);
 309
 310       dri2_surf->color_buffers[i].wl_buffer = NULL;
 311       dri2_surf->color_buffers[i].dri_image = NULL;
 312       dri2_surf->color_buffers[i].linear_copy = NULL;
 313       dri2_surf->color_buffers[i].data = NULL;
 314       dri2_surf->color_buffers[i].locked = 0;
 315    }
 316
 317    if (dri2_dpy->dri2) {
 318       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 319          if (dri2_surf->dri_buffers[i] &&
 320              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 321             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 322                                           dri2_surf->dri_buffers[i]);
 323    }
 324 }
 325
 326 static int
 327 get_back_bo(struct dri2_egl_surface *dri2_surf)
 328 {
 329    struct dri2_egl_display *dri2_dpy =
 330       dri2_egl_display(dri2_surf->base.Resource.Display);
 331    int i, use_flags;
 332    unsigned int dri_image_format;
 333
 334    /* currently supports three WL DRM formats,
 335     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 336     * and WL_DRM_FORMAT_RGB565
 337     */
 338    switch (dri2_surf->format) {
 339    case WL_DRM_FORMAT_ARGB8888:
 340       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 341       break;
 342    case WL_DRM_FORMAT_XRGB8888:
 343       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 344       break;
 345    case WL_DRM_FORMAT_RGB565:
 346       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 347       break;
 348    default:
 349       /* format is not supported */
 350       return -1;
 351    }
 352
 353    /* There might be a buffer release already queued that wasn't processed */
 354    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
 355
 356    while (dri2_surf->back == NULL) {
 357       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 358          /* Get an unlocked buffer, preferrably one with a dri_buffer
 359           * already allocated. */
 360          if (dri2_surf->color_buffers[i].locked)
 361             continue;
 362          if (dri2_surf->back == NULL)
 363             dri2_surf->back = &dri2_surf->color_buffers[i];
 364          else if (dri2_surf->back->dri_image == NULL)
 365             dri2_surf->back = &dri2_surf->color_buffers[i];
 366       }
 367
 368       if (dri2_surf->back)
 369          break;
 370
 371       /* If we don't have a buffer, then block on the server to release one for
 372        * us, and try again. */
 373       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_surf->wl_queue) < 0)
 374           return -1;
 375    }
 376
 377    if (dri2_surf->back == NULL)
 378       return -1;
 379
 380    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 381
 382    if (dri2_dpy->is_different_gpu &&
 383        dri2_surf->back->linear_copy == NULL) {
 384        dri2_surf->back->linear_copy =
 385           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 386                                       dri2_surf->base.Width,
 387                                       dri2_surf->base.Height,
 388                                       dri_image_format,
 389                                       use_flags |
 390                                       __DRI_IMAGE_USE_LINEAR,
 391                                       NULL);
 392       if (dri2_surf->back->linear_copy == NULL)
 393           return -1;
 394    }
 395
 396    if (dri2_surf->back->dri_image == NULL) {
 397       dri2_surf->back->dri_image =
 398          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 399                                       dri2_surf->base.Width,
 400                                       dri2_surf->base.Height,
 401                                       dri_image_format,
 402                                       dri2_dpy->is_different_gpu ?
 403                                          0 : use_flags,
 404                                       NULL);
 405       dri2_surf->back->age = 0;
 406    }
 407    if (dri2_surf->back->dri_image == NULL)
 408       return -1;
 409
 410    dri2_surf->back->locked = 1;
 411
 412    return 0;
 413 }
 414
 415
 416 static void
 417 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 418 {
 419    struct dri2_egl_display *dri2_dpy =
 420       dri2_egl_display(dri2_surf->base.Resource.Display);
 421    __DRIimage *image;
 422    int name, pitch;
 423
 424    image = dri2_surf->back->dri_image;
 425
 426    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 427    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 428
 429    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 430    buffer->name = name;
 431    buffer->pitch = pitch;
 432    buffer->cpp = 4;
 433    buffer->flags = 0;
 434 }
 435
 436 static int
 437 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 438            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 439 {
 440    struct dri2_egl_display *dri2_dpy =
 441       dri2_egl_display(dri2_surf->base.Resource.Display);
 442    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 443
 444    if (b == NULL) {
 445       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 446                                          attachment, format,
 447                                          dri2_surf->base.Width,
 448                                          dri2_surf->base.Height);
 449       dri2_surf->dri_buffers[attachment] = b;
 450    }
 451    if (b == NULL)
 452       return -1;
 453
 454    memcpy(buffer, b, sizeof *buffer);
 455
 456    return 0;
 457 }
 458
 459 static int
 460 update_buffers(struct dri2_egl_surface *dri2_surf)
 461 {
 462    struct dri2_egl_display *dri2_dpy =
 463       dri2_egl_display(dri2_surf->base.Resource.Display);
 464    int i;
 465
 466    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 467        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 468
 469       dri2_wl_release_buffers(dri2_surf);
 470
 471       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 472       dri2_surf->base.Height = dri2_surf->wl_win->height;
 473       dri2_surf->dx = dri2_surf->wl_win->dx;
 474       dri2_surf->dy = dri2_surf->wl_win->dy;
 475    }
 476
 477    if (get_back_bo(dri2_surf) < 0) {
 478       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 479       return -1;
 480    }
 481
 482    /* If we have an extra unlocked buffer at this point, we had to do triple
 483     * buffering for a while, but now can go back to just double buffering.
 484     * That means we can free any unlocked buffer now. */
 485    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 486       if (!dri2_surf->color_buffers[i].locked &&
 487           dri2_surf->color_buffers[i].wl_buffer) {
 488          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 489          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 490          if (dri2_dpy->is_different_gpu)
 491             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 492          dri2_surf->color_buffers[i].wl_buffer = NULL;
 493          dri2_surf->color_buffers[i].dri_image = NULL;
 494          dri2_surf->color_buffers[i].linear_copy = NULL;
 495       }
 496    }
 497
 498    return 0;
 499 }
 500
 501 static __DRIbuffer *
 502 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 503                                 int *width, int *height,
 504                                 unsigned int *attachments, int count,
 505                                 int *out_count, void *loaderPrivate)
 506 {
 507    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 508    int i, j;
 509
 510    if (update_buffers(dri2_surf) < 0)
 511       return NULL;
 512
 513    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 514       switch (attachments[i]) {
 515       case __DRI_BUFFER_BACK_LEFT:
 516          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 517          break;
 518       default:
 519          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 520                         &dri2_surf->buffers[j]) < 0) {
 521             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 522             return NULL;
 523          }
 524          break;
 525       }
 526    }
 527
 528    *out_count = j;
 529    if (j == 0)
 530            return NULL;
 531
 532    *width = dri2_surf->base.Width;
 533    *height = dri2_surf->base.Height;
 534
 535    return dri2_surf->buffers;
 536 }
 537
 538 static __DRIbuffer *
 539 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 540                     int *width, int *height,
 541                     unsigned int *attachments, int count,
 542                     int *out_count, void *loaderPrivate)
 543 {
 544    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 545    unsigned int *attachments_with_format;
 546    __DRIbuffer *buffer;
 547    unsigned int bpp;
 548
 549    int i;
 550
 551    switch (dri2_surf->format) {
 552    case WL_DRM_FORMAT_ARGB8888:
 553    case WL_DRM_FORMAT_XRGB8888:
 554       bpp = 32;
 555       break;
 556    case WL_DRM_FORMAT_RGB565:
 557       bpp = 16;
 558       break;
 559    default:
 560       /* format is not supported */
 561       return NULL;
 562    }
 563
 564    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 565    if (!attachments_with_format) {
 566       *out_count = 0;
 567       return NULL;
 568    }
 569
 570    for (i = 0; i < count; ++i) {
 571       attachments_with_format[2*i] = attachments[i];
 572       attachments_with_format[2*i + 1] = bpp;
 573    }
 574
 575    buffer =
 576       dri2_wl_get_buffers_with_format(driDrawable,
 577                                       width, height,
 578                                       attachments_with_format, count,
 579                                       out_count, loaderPrivate);
 580
 581    free(attachments_with_format);
 582
 583    return buffer;
 584 }
 585
 586 static int
 587 image_get_buffers(__DRIdrawable *driDrawable,
 588                   unsigned int format,
 589                   uint32_t *stamp,
 590                   void *loaderPrivate,
 591                   uint32_t buffer_mask,
 592                   struct __DRIimageList *buffers)
 593 {
 594    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 595
 596    if (update_buffers(dri2_surf) < 0)
 597       return 0;
 598
 599    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 600    buffers->back = dri2_surf->back->dri_image;
 601
 602    return 1;
 603 }
 604
 605 static void
 606 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 607 {
 608    (void) driDrawable;
 609    (void) loaderPrivate;
 610 }
 611
 612 static const __DRIdri2LoaderExtension dri2_loader_extension = {
 613    .base = { __DRI_DRI2_LOADER, 3 },
 614
 615    .getBuffers           = dri2_wl_get_buffers,
 616    .flushFrontBuffer     = dri2_wl_flush_front_buffer,
 617    .getBuffersWithFormat = dri2_wl_get_buffers_with_format,
 618 };
 619
 620 static const __DRIimageLoaderExtension image_loader_extension = {
 621    .base = { __DRI_IMAGE_LOADER, 1 },
 622
 623    .getBuffers          = image_get_buffers,
 624    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 625 };
 626
 627 static void
 628 wayland_throttle_callback(void *data,
 629                           struct wl_callback *callback,
 630                           uint32_t time)
 631 {
 632    struct dri2_egl_surface *dri2_surf = data;
 633
 634    dri2_surf->throttle_callback = NULL;
 635    wl_callback_destroy(callback);
 636 }
 637
 638 static const struct wl_callback_listener throttle_listener = {
 639    .done = wayland_throttle_callback
 640 };
 641
 642 static void
 643 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 644 {
 645    struct dri2_egl_display *dri2_dpy =
 646       dri2_egl_display(dri2_surf->base.Resource.Display);
 647    __DRIimage *image;
 648    int fd, stride, name;
 649
 650    if (dri2_surf->current->wl_buffer != NULL)
 651       return;
 652
 653    if (dri2_dpy->is_different_gpu) {
 654       image = dri2_surf->current->linear_copy;
 655    } else {
 656       image = dri2_surf->current->dri_image;
 657    }
 658    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 659       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 660       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 661
 662       dri2_surf->current->wl_buffer =
 663          wl_drm_create_prime_buffer(dri2_surf->wl_drm_wrapper,
 664                                     fd,
 665                                     dri2_surf->base.Width,
 666                                     dri2_surf->base.Height,
 667                                     dri2_surf->format,
 668                                     0, stride,
 669                                     0, 0,
 670                                     0, 0);
 671       close(fd);
 672    } else {
 673       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 674       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 675
 676       dri2_surf->current->wl_buffer =
 677          wl_drm_create_buffer(dri2_surf->wl_drm_wrapper,
 678                               name,
 679                               dri2_surf->base.Width,
 680                               dri2_surf->base.Height,
 681                               stride,
 682                               dri2_surf->format);
 683    }
 684
 685    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 686                           &wl_buffer_listener, dri2_surf);
 687 }
 688
 689 static EGLBoolean
 690 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 691                   const EGLint *rects,
 692                   EGLint n_rects)
 693 {
 694    int i;
 695
 696    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_surface_wrapper)
 697        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 698       return EGL_FALSE;
 699
 700    for (i = 0; i < n_rects; i++) {
 701       const int *rect = &rects[i * 4];
 702
 703       wl_surface_damage_buffer(dri2_surf->wl_surface_wrapper,
 704                                rect[0],
 705                                dri2_surf->base.Height - rect[1] - rect[3],
 706                                rect[2], rect[3]);
 707    }
 708    return EGL_TRUE;
 709 }
 710 /**
 711  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 712  */
 713 static EGLBoolean
 714 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 715                                  _EGLDisplay *disp,
 716                                  _EGLSurface *draw,
 717                                  const EGLint *rects,
 718                                  EGLint n_rects)
 719 {
 720    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 721    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 722    int i;
 723
 724    while (dri2_surf->throttle_callback != NULL)
 725       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 726                                     dri2_surf->wl_queue) == -1)
 727          return -1;
 728
 729    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 730       if (dri2_surf->color_buffers[i].age > 0)
 731          dri2_surf->color_buffers[i].age++;
 732
 733    /* Make sure we have a back buffer in case we're swapping without ever
 734     * rendering. */
 735    if (get_back_bo(dri2_surf) < 0) {
 736       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 737       return EGL_FALSE;
 738    }
 739
 740    if (draw->SwapInterval > 0) {
 741       dri2_surf->throttle_callback =
 742          wl_surface_frame(dri2_surf->wl_surface_wrapper);
 743       wl_callback_add_listener(dri2_surf->throttle_callback,
 744                                &throttle_listener, dri2_surf);
 745    }
 746
 747    dri2_surf->back->age = 1;
 748    dri2_surf->current = dri2_surf->back;
 749    dri2_surf->back = NULL;
 750
 751    create_wl_buffer(dri2_surf);
 752
 753    wl_surface_attach(dri2_surf->wl_surface_wrapper,
 754                      dri2_surf->current->wl_buffer,
 755                      dri2_surf->dx, dri2_surf->dy);
 756
 757    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 758    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 759    /* reset resize growing parameters */
 760    dri2_surf->dx = 0;
 761    dri2_surf->dy = 0;
 762
 763    /* If the compositor doesn't support damage_buffer, we deliberately
 764     * ignore the damage region and post maximum damage, due to
 765     * https://bugs.freedesktop.org/78190 */
 766    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 767       wl_surface_damage(dri2_surf->wl_surface_wrapper,
 768                         0, 0, INT32_MAX, INT32_MAX);
 769
 770    if (dri2_dpy->is_different_gpu) {
 771       _EGLContext *ctx = _eglGetCurrentContext();
 772       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 773       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 774                                  dri2_surf->current->linear_copy,
 775                                  dri2_surf->current->dri_image,
 776                                  0, 0, dri2_surf->base.Width,
 777                                  dri2_surf->base.Height,
 778                                  0, 0, dri2_surf->base.Width,
 779                                  dri2_surf->base.Height, 0);
 780    }
 781
 782    dri2_flush_drawable_for_swapbuffers(disp, draw);
 783    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 784
 785    wl_surface_commit(dri2_surf->wl_surface_wrapper);
 786
 787    /* If we're not waiting for a frame callback then we'll at least throttle
 788     * to a sync callback so that we always give a chance for the compositor to
 789     * handle the commit and send a release event before checking for a free
 790     * buffer */
 791    if (dri2_surf->throttle_callback == NULL) {
 792       dri2_surf->throttle_callback = wl_display_sync(dri2_surf->wl_dpy_wrapper);
 793       wl_callback_add_listener(dri2_surf->throttle_callback,
 794                                &throttle_listener, dri2_surf);
 795    }
 796
 797    wl_display_flush(dri2_dpy->wl_dpy);
 798
 799    return EGL_TRUE;
 800 }
 801
 802 static EGLint
 803 dri2_wl_query_buffer_age(_EGLDriver *drv,
 804                          _EGLDisplay *disp, _EGLSurface *surface)
 805 {
 806    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 807
 808    if (get_back_bo(dri2_surf) < 0) {
 809       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 810       return 0;
 811    }
 812
 813    return dri2_surf->back->age;
 814 }
 815
 816 static EGLBoolean
 817 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 818 {
 819    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 820 }
 821
 822 static struct wl_buffer *
 823 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 824                                           _EGLDisplay *disp,
 825                                           _EGLImage *img)
 826 {
 827    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 828    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 829    __DRIimage *image = dri2_img->dri_image;
 830    struct wl_buffer *buffer;
 831    int width, height, format, pitch;
 832    enum wl_drm_format wl_format;
 833
 834    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 835
 836    switch (format) {
 837    case __DRI_IMAGE_FORMAT_ARGB8888:
 838       if (!(dri2_dpy->formats & HAS_ARGB8888))
 839          goto bad_format;
 840       wl_format = WL_DRM_FORMAT_ARGB8888;
 841       break;
 842    case __DRI_IMAGE_FORMAT_XRGB8888:
 843       if (!(dri2_dpy->formats & HAS_XRGB8888))
 844          goto bad_format;
 845       wl_format = WL_DRM_FORMAT_XRGB8888;
 846       break;
 847    default:
 848       goto bad_format;
 849    }
 850
 851    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 852    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 853    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 854
 855    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 856       int fd;
 857
 858       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 859
 860       buffer =
 861          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 862                                     fd,
 863                                     width, height,
 864                                     wl_format,
 865                                     0, pitch,
 866                                     0, 0,
 867                                     0, 0);
 868
 869       close(fd);
 870    } else {
 871       int name;
 872
 873       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 874
 875       buffer =
 876          wl_drm_create_buffer(dri2_dpy->wl_drm,
 877                               name,
 878                               width, height,
 879                               pitch,
 880                               wl_format);
 881    }
 882
 883    /* The buffer object will have been created with our internal event queue
 884     * because it is using the wl_drm object as a proxy factory. We want the
 885     * buffer to be used by the application so we'll reset it to the display's
 886     * default event queue */
 887    if (buffer)
 888       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 889
 890    return buffer;
 891
 892 bad_format:
 893    _eglError(EGL_BAD_MATCH, "unsupported image format");
 894    return NULL;
 895 }
 896
 897 static int
 898 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 899 {
 900    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 901    int ret = 0;
 902
 903    if (dri2_dpy->is_render_node) {
 904       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 905                             "authenticate for render-nodes");
 906       return 0;
 907    }
 908    dri2_dpy->authenticated = 0;
 909
 910    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 911    if (roundtrip(dri2_dpy) < 0)
 912       ret = -1;
 913
 914    if (!dri2_dpy->authenticated)
 915       ret = -1;
 916
 917    /* reset authenticated */
 918    dri2_dpy->authenticated = 1;
 919
 920    return ret;
 921 }
 922
 923 static void
 924 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 925 {
 926    struct dri2_egl_display *dri2_dpy = data;
 927    drm_magic_t magic;
 928
 929    dri2_dpy->device_name = strdup(device);
 930    if (!dri2_dpy->device_name)
 931       return;
 932
 933    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 934    if (dri2_dpy->fd == -1) {
 935       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 936               dri2_dpy->device_name, strerror(errno));
 937       return;
 938    }
 939
 940    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 941       dri2_dpy->authenticated = 1;
 942    } else {
 943       drmGetMagic(dri2_dpy->fd, &magic);
 944       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 945    }
 946 }
 947
 948 static void
 949 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 950 {
 951    struct dri2_egl_display *dri2_dpy = data;
 952
 953    switch (format) {
 954    case WL_DRM_FORMAT_ARGB8888:
 955       dri2_dpy->formats |= HAS_ARGB8888;
 956       break;
 957    case WL_DRM_FORMAT_XRGB8888:
 958       dri2_dpy->formats |= HAS_XRGB8888;
 959       break;
 960    case WL_DRM_FORMAT_RGB565:
 961       dri2_dpy->formats |= HAS_RGB565;
 962       break;
 963    }
 964 }
 965
 966 static void
 967 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 968 {
 969    struct dri2_egl_display *dri2_dpy = data;
 970
 971    dri2_dpy->capabilities = value;
 972 }
 973
 974 static void
 975 drm_handle_authenticated(void *data, struct wl_drm *drm)
 976 {
 977    struct dri2_egl_display *dri2_dpy = data;
 978
 979    dri2_dpy->authenticated = 1;
 980 }
 981
 982 static const struct wl_drm_listener drm_listener = {
 983    .device = drm_handle_device,
 984    .format = drm_handle_format,
 985    .authenticated = drm_handle_authenticated,
 986    .capabilities = drm_handle_capabilities
 987 };
 988
 989 static void
 990 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 991                        const char *interface, uint32_t version)
 992 {
 993    struct dri2_egl_display *dri2_dpy = data;
 994
 995    if (version > 1)
 996       version = 2;
 997    if (strcmp(interface, "wl_drm") == 0) {
 998       dri2_dpy->wl_drm =
 999          wl_registry_bind(registry, name, &wl_drm_interface, version);
1000       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
1001    }
1002 }
1003
1004 static void
1005 registry_handle_global_remove(void *data, struct wl_registry *registry,
1006                               uint32_t name)
1007 {
1008 }
1009
1010 static const struct wl_registry_listener registry_listener_drm = {
1011    .global = registry_handle_global_drm,
1012    .global_remove = registry_handle_global_remove
1013 };
1014
1015 static EGLBoolean
1016 dri2_wl_swap_interval(_EGLDriver *drv,
1017                    _EGLDisplay *disp,
1018                    _EGLSurface *surf,
1019                    EGLint interval)
1020 {
1021    if (interval > surf->Config->MaxSwapInterval)
1022       interval = surf->Config->MaxSwapInterval;
1023    else if (interval < surf->Config->MinSwapInterval)
1024       interval = surf->Config->MinSwapInterval;
1025
1026    surf->SwapInterval = interval;
1027
1028    return EGL_TRUE;
1029 }
1030
1031 static void
1032 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1033 {
1034    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1035
1036    /* We can't use values greater than 1 on Wayland because we are using the
1037     * frame callback to synchronise the frame and the only way we be sure to
1038     * get a frame callback is to attach a new buffer. Therefore we can't just
1039     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1040
1041    if (dri2_dpy->config)
1042       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1043                                      "vblank_mode", &vblank_mode);
1044    switch (vblank_mode) {
1045    case DRI_CONF_VBLANK_NEVER:
1046       dri2_dpy->min_swap_interval = 0;
1047       dri2_dpy->max_swap_interval = 0;
1048       dri2_dpy->default_swap_interval = 0;
1049       break;
1050    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1051       dri2_dpy->min_swap_interval = 1;
1052       dri2_dpy->max_swap_interval = 1;
1053       dri2_dpy->default_swap_interval = 1;
1054       break;
1055    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1056       dri2_dpy->min_swap_interval = 0;
1057       dri2_dpy->max_swap_interval = 1;
1058       dri2_dpy->default_swap_interval = 0;
1059       break;
1060    default:
1061    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1062       dri2_dpy->min_swap_interval = 0;
1063       dri2_dpy->max_swap_interval = 1;
1064       dri2_dpy->default_swap_interval = 1;
1065       break;
1066    }
1067 }
1068
1069 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1070    .authenticate = dri2_wl_authenticate,
1071    .create_window_surface = dri2_wl_create_window_surface,
1072    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1073    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1074    .destroy_surface = dri2_wl_destroy_surface,
1075    .create_image = dri2_create_image_khr,
1076    .swap_interval = dri2_wl_swap_interval,
1077    .swap_buffers = dri2_wl_swap_buffers,
1078    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1079    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1080    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1081    .copy_buffers = dri2_fallback_copy_buffers,
1082    .query_buffer_age = dri2_wl_query_buffer_age,
1083    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1084    .get_sync_values = dri2_fallback_get_sync_values,
1085    .get_dri_drawable = dri2_surface_get_dri_drawable,
1086 };
1087
1088 static const __DRIextension *dri2_loader_extensions[] = {
1089    &dri2_loader_extension.base,
1090    &image_loader_extension.base,
1091    &image_lookup_extension.base,
1092    &use_invalidate.base,
1093    NULL,
1094 };
1095
1096 static const __DRIextension *image_loader_extensions[] = {
1097    &image_loader_extension.base,
1098    &image_lookup_extension.base,
1099    &use_invalidate.base,
1100    NULL,
1101 };
1102
1103 static EGLBoolean
1104 dri2_wl_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
1105 {
1106    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1107    static const struct {
1108       const char *format_name;
1109       int has_format;
1110       unsigned int rgba_masks[4];
1111    } visuals[] = {
1112       { "XRGB8888", HAS_XRGB8888, { 0xff0000, 0xff00, 0x00ff, 0xff000000 } },
1113       { "ARGB8888", HAS_ARGB8888, { 0xff0000, 0xff00, 0x00ff, 0 } },
1114       { "RGB565",   HAS_RGB565,   { 0x00f800, 0x07e0, 0x001f, 0 } },
1115    };
1116    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
1117    unsigned int count, i, j;
1118
1119    count = 0;
1120    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1121       for (j = 0; j < ARRAY_SIZE(visuals); j++) {
1122          struct dri2_egl_config *dri2_conf;
1123
1124          if (!(dri2_dpy->formats & visuals[j].has_format))
1125             continue;
1126
1127          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
1128                count + 1, EGL_WINDOW_BIT, NULL, visuals[j].rgba_masks);
1129          if (dri2_conf) {
1130             count++;
1131             format_count[j]++;
1132          }
1133       }
1134    }
1135
1136    for (i = 0; i < ARRAY_SIZE(format_count); i++) {
1137       if (!format_count[i]) {
1138          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
1139                  visuals[i].format_name);
1140       }
1141    }
1142
1143    return (count != 0);
1144 }
1145
1146 static EGLBoolean
1147 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1148 {
1149    struct dri2_egl_display *dri2_dpy;
1150
1151    loader_set_logger(_eglLog);
1152
1153    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1154    if (!dri2_dpy)
1155       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1156
1157    dri2_dpy->fd = -1;
1158    disp->DriverData = (void *) dri2_dpy;
1159    if (disp->PlatformDisplay == NULL) {
1160       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1161       if (dri2_dpy->wl_dpy == NULL)
1162          goto cleanup;
1163       dri2_dpy->own_device = 1;
1164    } else {
1165       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1166    }
1167
1168    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1169
1170    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1171    if (dri2_dpy->wl_dpy_wrapper == NULL)
1172       goto cleanup;
1173
1174    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1175                       dri2_dpy->wl_queue);
1176
1177    if (dri2_dpy->own_device)
1178       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1179
1180    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1181    wl_registry_add_listener(dri2_dpy->wl_registry,
1182                             &registry_listener_drm, dri2_dpy);
1183    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1184       goto cleanup;
1185
1186    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1187       goto cleanup;
1188
1189    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1190       goto cleanup;
1191
1192    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1193                                                &dri2_dpy->is_different_gpu);
1194    if (dri2_dpy->is_different_gpu) {
1195       free(dri2_dpy->device_name);
1196       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1197       if (!dri2_dpy->device_name) {
1198          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1199                                   "for requested GPU");
1200          goto cleanup;
1201       }
1202    }
1203
1204    /* we have to do the check now, because loader_get_user_preferred_fd
1205     * will return a render-node when the requested gpu is different
1206     * to the server, but also if the client asks for the same gpu than
1207     * the server by requesting its pci-id */
1208    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1209
1210    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
1211    if (dri2_dpy->driver_name == NULL) {
1212       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1213       goto cleanup;
1214    }
1215
1216    if (!dri2_load_driver(disp))
1217       goto cleanup;
1218
1219    /* render nodes cannot use Gem names, and thus do not support
1220     * the __DRI_DRI2_LOADER extension */
1221    if (!dri2_dpy->is_render_node)
1222       dri2_dpy->loader_extensions = dri2_loader_extensions;
1223    else
1224       dri2_dpy->loader_extensions = image_loader_extensions;
1225
1226    if (!dri2_create_screen(disp))
1227       goto cleanup;
1228
1229    if (!dri2_setup_extensions(disp))
1230       goto cleanup;
1231
1232    dri2_setup_screen(disp);
1233
1234    dri2_wl_setup_swap_interval(dri2_dpy);
1235
1236    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1237     * createImageFromFds support indicates that Prime export/import
1238     * is supported by the driver. Fall back to
1239     * gem names if we don't have Prime support. */
1240
1241    if (dri2_dpy->image->base.version < 7 ||
1242        dri2_dpy->image->createImageFromFds == NULL)
1243       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1244
1245    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1246     * The server needs to accept them */
1247    if (dri2_dpy->is_render_node &&
1248        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1249       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1250       goto cleanup;
1251    }
1252
1253    if (dri2_dpy->is_different_gpu &&
1254        (dri2_dpy->image->base.version < 9 ||
1255         dri2_dpy->image->blitImage == NULL)) {
1256       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1257                             "Image extension in the driver is not "
1258                             "compatible. Version 9 or later and blitImage() "
1259                             "are required");
1260       goto cleanup;
1261    }
1262
1263    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1264       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1265       goto cleanup;
1266    }
1267
1268    dri2_set_WL_bind_wayland_display(drv, disp);
1269    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1270     * because the buffer of the EGLImage has likely a tiling mode the server
1271     * gpu won't support. These is no way to check for now. Thus do not support the
1272     * extension */
1273    if (!dri2_dpy->is_different_gpu) {
1274       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1275    } else {
1276       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1277          dri2_fallback_create_wayland_buffer_from_image;
1278    }
1279    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1280
1281    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1282
1283    /* Fill vtbl last to prevent accidentally calling virtual function during
1284     * initialization.
1285     */
1286    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1287
1288    return EGL_TRUE;
1289
1290  cleanup:
1291    dri2_display_destroy(disp);
1292    return EGL_FALSE;
1293 }
1294
1295 static int
1296 dri2_wl_swrast_get_stride_for_format(int format, int w)
1297 {
1298    if (format == WL_SHM_FORMAT_RGB565)
1299       return 2 * w;
1300    else /* ARGB8888 || XRGB8888 */
1301       return 4 * w;
1302 }
1303
1304 /*
1305  * Taken from weston shared/os-compatibility.c
1306  */
1307
1308 #ifndef HAVE_MKOSTEMP
1309
1310 static int
1311 set_cloexec_or_close(int fd)
1312 {
1313    long flags;
1314
1315    if (fd == -1)
1316       return -1;
1317
1318    flags = fcntl(fd, F_GETFD);
1319    if (flags == -1)
1320       goto err;
1321
1322    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1323       goto err;
1324
1325    return fd;
1326
1327 err:
1328    close(fd);
1329    return -1;
1330 }
1331
1332 #endif
1333
1334 /*
1335  * Taken from weston shared/os-compatibility.c
1336  */
1337
1338 static int
1339 create_tmpfile_cloexec(char *tmpname)
1340 {
1341    int fd;
1342
1343 #ifdef HAVE_MKOSTEMP
1344    fd = mkostemp(tmpname, O_CLOEXEC);
1345    if (fd >= 0)
1346       unlink(tmpname);
1347 #else
1348    fd = mkstemp(tmpname);
1349    if (fd >= 0) {
1350       fd = set_cloexec_or_close(fd);
1351       unlink(tmpname);
1352    }
1353 #endif
1354
1355    return fd;
1356 }
1357
1358 /*
1359  * Taken from weston shared/os-compatibility.c
1360  *
1361  * Create a new, unique, anonymous file of the given size, and
1362  * return the file descriptor for it. The file descriptor is set
1363  * CLOEXEC. The file is immediately suitable for mmap()'ing
1364  * the given size at offset zero.
1365  *
1366  * The file should not have a permanent backing store like a disk,
1367  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1368  *
1369  * The file name is deleted from the file system.
1370  *
1371  * The file is suitable for buffer sharing between processes by
1372  * transmitting the file descriptor over Unix sockets using the
1373  * SCM_RIGHTS methods.
1374  *
1375  * If the C library implements posix_fallocate(), it is used to
1376  * guarantee that disk space is available for the file at the
1377  * given size. If disk space is insufficent, errno is set to ENOSPC.
1378  * If posix_fallocate() is not supported, program may receive
1379  * SIGBUS on accessing mmap()'ed file contents instead.
1380  */
1381 static int
1382 os_create_anonymous_file(off_t size)
1383 {
1384    static const char template[] = "/mesa-shared-XXXXXX";
1385    const char *path;
1386    char *name;
1387    int fd;
1388    int ret;
1389
1390    path = getenv("XDG_RUNTIME_DIR");
1391    if (!path) {
1392       errno = ENOENT;
1393       return -1;
1394    }
1395
1396    name = malloc(strlen(path) + sizeof(template));
1397    if (!name)
1398       return -1;
1399
1400    strcpy(name, path);
1401    strcat(name, template);
1402
1403    fd = create_tmpfile_cloexec(name);
1404
1405    free(name);
1406
1407    if (fd < 0)
1408       return -1;
1409
1410    ret = ftruncate(fd, size);
1411    if (ret < 0) {
1412       close(fd);
1413       return -1;
1414    }
1415
1416    return fd;
1417 }
1418
1419
1420 static EGLBoolean
1421 dri2_wl_swrast_allocate_buffer(struct dri2_egl_surface *dri2_surf,
1422                                int format, int w, int h,
1423                                void **data, int *size,
1424                                struct wl_buffer **buffer)
1425 {
1426    struct dri2_egl_display *dri2_dpy =
1427       dri2_egl_display(dri2_surf->base.Resource.Display);
1428    struct wl_shm_pool *pool;
1429    int fd, stride, size_map;
1430    void *data_map;
1431
1432    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1433    size_map = h * stride;
1434
1435    /* Create a sharable buffer */
1436    fd = os_create_anonymous_file(size_map);
1437    if (fd < 0)
1438       return EGL_FALSE;
1439
1440    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1441    if (data_map == MAP_FAILED) {
1442       close(fd);
1443       return EGL_FALSE;
1444    }
1445
1446    /* Share it in a wl_buffer */
1447    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1448    wl_proxy_set_queue((struct wl_proxy *)pool, dri2_surf->wl_queue);
1449    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1450    wl_shm_pool_destroy(pool);
1451    close(fd);
1452
1453    *data = data_map;
1454    *size = size_map;
1455    return EGL_TRUE;
1456 }
1457
1458 static int
1459 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1460 {
1461    struct dri2_egl_display *dri2_dpy =
1462       dri2_egl_display(dri2_surf->base.Resource.Display);
1463    int i;
1464
1465    /* we need to do the following operations only once per frame */
1466    if (dri2_surf->back)
1467       return 0;
1468
1469    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1470        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1471
1472       dri2_wl_release_buffers(dri2_surf);
1473
1474       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1475       dri2_surf->base.Height = dri2_surf->wl_win->height;
1476       dri2_surf->dx = dri2_surf->wl_win->dx;
1477       dri2_surf->dy = dri2_surf->wl_win->dy;
1478       dri2_surf->current = NULL;
1479    }
1480
1481    /* find back buffer */
1482
1483    /* There might be a buffer release already queued that wasn't processed */
1484    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
1485
1486    /* try get free buffer already created */
1487    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1488       if (!dri2_surf->color_buffers[i].locked &&
1489           dri2_surf->color_buffers[i].wl_buffer) {
1490           dri2_surf->back = &dri2_surf->color_buffers[i];
1491           break;
1492       }
1493    }
1494
1495    /* else choose any another free location */
1496    if (!dri2_surf->back) {
1497       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1498          if (!dri2_surf->color_buffers[i].locked) {
1499              dri2_surf->back = &dri2_surf->color_buffers[i];
1500              if (!dri2_wl_swrast_allocate_buffer(dri2_surf,
1501                                                  dri2_surf->format,
1502                                                  dri2_surf->base.Width,
1503                                                  dri2_surf->base.Height,
1504                                                  &dri2_surf->back->data,
1505                                                  &dri2_surf->back->data_size,
1506                                                  &dri2_surf->back->wl_buffer)) {
1507                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1508                  return -1;
1509              }
1510              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1511                                     &wl_buffer_listener, dri2_surf);
1512              break;
1513          }
1514       }
1515    }
1516
1517    if (!dri2_surf->back) {
1518       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1519       return -1;
1520    }
1521
1522    dri2_surf->back->locked = 1;
1523
1524    /* If we have an extra unlocked buffer at this point, we had to do triple
1525     * buffering for a while, but now can go back to just double buffering.
1526     * That means we can free any unlocked buffer now. */
1527    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1528       if (!dri2_surf->color_buffers[i].locked &&
1529           dri2_surf->color_buffers[i].wl_buffer) {
1530          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1531          munmap(dri2_surf->color_buffers[i].data,
1532                 dri2_surf->color_buffers[i].data_size);
1533          dri2_surf->color_buffers[i].wl_buffer = NULL;
1534          dri2_surf->color_buffers[i].data = NULL;
1535       }
1536    }
1537
1538    return 0;
1539 }
1540
1541 static void*
1542 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1543 {
1544    /* if there has been a resize: */
1545    if (!dri2_surf->current)
1546       return NULL;
1547
1548    return dri2_surf->current->data;
1549 }
1550
1551 static void*
1552 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1553 {
1554    assert(dri2_surf->back);
1555    return dri2_surf->back->data;
1556 }
1557
1558 static void
1559 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1560 {
1561    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1562
1563    while (dri2_surf->throttle_callback != NULL)
1564       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1565                                     dri2_surf->wl_queue) == -1)
1566          return;
1567
1568    if (dri2_surf->base.SwapInterval > 0) {
1569       dri2_surf->throttle_callback =
1570          wl_surface_frame(dri2_surf->wl_surface_wrapper);
1571       wl_callback_add_listener(dri2_surf->throttle_callback,
1572                                &throttle_listener, dri2_surf);
1573    }
1574
1575    dri2_surf->current = dri2_surf->back;
1576    dri2_surf->back = NULL;
1577
1578    wl_surface_attach(dri2_surf->wl_surface_wrapper,
1579                      dri2_surf->current->wl_buffer,
1580                      dri2_surf->dx, dri2_surf->dy);
1581
1582    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1583    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1584    /* reset resize growing parameters */
1585    dri2_surf->dx = 0;
1586    dri2_surf->dy = 0;
1587
1588    wl_surface_damage(dri2_surf->wl_surface_wrapper,
1589                      0, 0, INT32_MAX, INT32_MAX);
1590    wl_surface_commit(dri2_surf->wl_surface_wrapper);
1591
1592    /* If we're not waiting for a frame callback then we'll at least throttle
1593     * to a sync callback so that we always give a chance for the compositor to
1594     * handle the commit and send a release event before checking for a free
1595     * buffer */
1596    if (dri2_surf->throttle_callback == NULL) {
1597       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy_wrapper);
1598       wl_callback_add_listener(dri2_surf->throttle_callback,
1599                                &throttle_listener, dri2_surf);
1600    }
1601
1602    wl_display_flush(dri2_dpy->wl_dpy);
1603 }
1604
1605 static void
1606 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1607                                  int *x, int *y, int *w, int *h,
1608                                  void *loaderPrivate)
1609 {
1610    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1611
1612    (void) swrast_update_buffers(dri2_surf);
1613    *x = 0;
1614    *y = 0;
1615    *w = dri2_surf->base.Width;
1616    *h = dri2_surf->base.Height;
1617 }
1618
1619 static void
1620 dri2_wl_swrast_get_image(__DRIdrawable * read,
1621                          int x, int y, int w, int h,
1622                          char *data, void *loaderPrivate)
1623 {
1624    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1625    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1626    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1627    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1628    int dst_stride = copy_width;
1629    char *src, *dst;
1630
1631    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1632    if (!src) {
1633       memset(data, 0, copy_width * h);
1634       return;
1635    }
1636
1637    assert(data != src);
1638    assert(copy_width <= src_stride);
1639
1640    src += x_offset;
1641    src += y * src_stride;
1642    dst = data;
1643
1644    if (copy_width > src_stride-x_offset)
1645       copy_width = src_stride-x_offset;
1646    if (h > dri2_surf->base.Height-y)
1647       h = dri2_surf->base.Height-y;
1648
1649    for (; h>0; h--) {
1650       memcpy(dst, src, copy_width);
1651       src += src_stride;
1652       dst += dst_stride;
1653    }
1654 }
1655
1656 static void
1657 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1658                          int x, int y, int w, int h, int stride,
1659                          char *data, void *loaderPrivate)
1660 {
1661    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1662    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1663    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1664    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1665    char *src, *dst;
1666
1667    assert(copy_width <= stride);
1668
1669    (void) swrast_update_buffers(dri2_surf);
1670    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1671
1672    /* partial copy, copy old content */
1673    if (copy_width < dst_stride)
1674       dri2_wl_swrast_get_image(draw, 0, 0,
1675                                dri2_surf->base.Width, dri2_surf->base.Height,
1676                                dst, loaderPrivate);
1677
1678    dst += x_offset;
1679    dst += y * dst_stride;
1680
1681    src = data;
1682
1683    /* drivers expect we do these checks (and some rely on it) */
1684    if (copy_width > dst_stride-x_offset)
1685       copy_width = dst_stride-x_offset;
1686    if (h > dri2_surf->base.Height-y)
1687       h = dri2_surf->base.Height-y;
1688
1689    for (; h>0; h--) {
1690       memcpy(dst, src, copy_width);
1691       src += stride;
1692       dst += dst_stride;
1693    }
1694    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1695 }
1696
1697 static void
1698 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1699                          int x, int y, int w, int h,
1700                          char *data, void *loaderPrivate)
1701 {
1702    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1703    int stride;
1704
1705    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1706    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1707                              stride, data, loaderPrivate);
1708 }
1709
1710 static EGLBoolean
1711 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1712 {
1713    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1714    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1715
1716    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1717    return EGL_TRUE;
1718 }
1719
1720 static void
1721 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1722 {
1723    struct dri2_egl_display *dri2_dpy = data;
1724
1725    switch (format) {
1726    case WL_SHM_FORMAT_ARGB8888:
1727       dri2_dpy->formats |= HAS_ARGB8888;
1728       break;
1729    case WL_SHM_FORMAT_XRGB8888:
1730       dri2_dpy->formats |= HAS_XRGB8888;
1731       break;
1732    case WL_SHM_FORMAT_RGB565:
1733       dri2_dpy->formats |= HAS_RGB565;
1734       break;
1735    }
1736 }
1737
1738 static const struct wl_shm_listener shm_listener = {
1739    .format = shm_handle_format
1740 };
1741
1742 static void
1743 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1744                               const char *interface, uint32_t version)
1745 {
1746    struct dri2_egl_display *dri2_dpy = data;
1747
1748    if (strcmp(interface, "wl_shm") == 0) {
1749       dri2_dpy->wl_shm =
1750          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1751       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1752    }
1753 }
1754
1755 static const struct wl_registry_listener registry_listener_swrast = {
1756    .global = registry_handle_global_swrast,
1757    .global_remove = registry_handle_global_remove
1758 };
1759
1760 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1761    .authenticate = NULL,
1762    .create_window_surface = dri2_wl_create_window_surface,
1763    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1764    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1765    .destroy_surface = dri2_wl_destroy_surface,
1766    .create_image = dri2_fallback_create_image_khr,
1767    .swap_interval = dri2_wl_swap_interval,
1768    .swap_buffers = dri2_wl_swrast_swap_buffers,
1769    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1770    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1771    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1772    .copy_buffers = dri2_fallback_copy_buffers,
1773    .query_buffer_age = dri2_fallback_query_buffer_age,
1774    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1775    .get_sync_values = dri2_fallback_get_sync_values,
1776    .get_dri_drawable = dri2_surface_get_dri_drawable,
1777 };
1778
1779 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1780    .base = { __DRI_SWRAST_LOADER, 2 },
1781
1782    .getDrawableInfo = dri2_wl_swrast_get_drawable_info,
1783    .putImage        = dri2_wl_swrast_put_image,
1784    .getImage        = dri2_wl_swrast_get_image,
1785    .putImage2       = dri2_wl_swrast_put_image2,
1786 };
1787
1788 static const __DRIextension *swrast_loader_extensions[] = {
1789    &swrast_loader_extension.base,
1790    NULL,
1791 };
1792
1793 static EGLBoolean
1794 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1795 {
1796    struct dri2_egl_display *dri2_dpy;
1797
1798    loader_set_logger(_eglLog);
1799
1800    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1801    if (!dri2_dpy)
1802       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1803
1804    dri2_dpy->fd = -1;
1805    disp->DriverData = (void *) dri2_dpy;
1806    if (disp->PlatformDisplay == NULL) {
1807       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1808       if (dri2_dpy->wl_dpy == NULL)
1809          goto cleanup;
1810       dri2_dpy->own_device = 1;
1811    } else {
1812       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1813    }
1814
1815    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1816
1817    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1818    if (dri2_dpy->wl_dpy_wrapper == NULL)
1819       goto cleanup;
1820
1821    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1822                       dri2_dpy->wl_queue);
1823
1824    if (dri2_dpy->own_device)
1825       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1826
1827    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1828    wl_registry_add_listener(dri2_dpy->wl_registry,
1829                             &registry_listener_swrast, dri2_dpy);
1830
1831    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1832       goto cleanup;
1833
1834    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1835       goto cleanup;
1836
1837    dri2_dpy->driver_name = strdup("swrast");
1838    if (!dri2_load_driver_swrast(disp))
1839       goto cleanup;
1840
1841    dri2_dpy->loader_extensions = swrast_loader_extensions;
1842
1843    if (!dri2_create_screen(disp))
1844       goto cleanup;
1845
1846    if (!dri2_setup_extensions(disp))
1847       goto cleanup;
1848
1849    dri2_setup_screen(disp);
1850
1851    dri2_wl_setup_swap_interval(dri2_dpy);
1852
1853    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1854       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1855       goto cleanup;
1856    }
1857
1858    /* Fill vtbl last to prevent accidentally calling virtual function during
1859     * initialization.
1860     */
1861    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1862
1863    return EGL_TRUE;
1864
1865  cleanup:
1866    dri2_display_destroy(disp);
1867    return EGL_FALSE;
1868 }
1869
1870 EGLBoolean
1871 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1872 {
1873    EGLBoolean initialized = EGL_TRUE;
1874
1875    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1876
1877    if (hw_accel) {
1878       if (!dri2_initialize_wayland_drm(drv, disp)) {
1879          initialized = dri2_initialize_wayland_swrast(drv, disp);
1880       }
1881    } else {
1882       initialized = dri2_initialize_wayland_swrast(drv, disp);
1883    }
1884
1885    return initialized;
1886
1887 }