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 = false;
  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->flush)
 192       dri2_surf->wl_win->resize_callback = resize_callback;
 193
 194    if (dri2_dpy->image_driver)
 195       createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
 196    else if (dri2_dpy->dri2)
 197       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
 198    else
 199       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
 200
 201    dri2_surf->dri_drawable = (*createNewDrawable)(dri2_dpy->dri_screen, config,
 202                                                   dri2_surf);
 203     if (dri2_surf->dri_drawable == NULL) {
 204       _eglError(EGL_BAD_ALLOC, "createNewDrawable");
 205        goto cleanup_surf;
 206     }
 207
 208    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
 209                          dri2_dpy->default_swap_interval);
 210
 211    return &dri2_surf->base;
 212
 213  cleanup_drm:
 214    if (dri2_surf->wl_drm_wrapper)
 215       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 216  cleanup_queue:
 217    wl_event_queue_destroy(dri2_surf->wl_queue);
 218  cleanup_surf:
 219    free(dri2_surf);
 220
 221    return NULL;
 222 }
 223
 224 static _EGLSurface *
 225 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 226                               _EGLConfig *conf, void *native_window,
 227                               const EGLint *attrib_list)
 228 {
 229    /* From the EGL_EXT_platform_wayland spec, version 3:
 230     *
 231     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 232     *   that belongs to Wayland. Any such call fails and generates
 233     *   EGL_BAD_PARAMETER.
 234     */
 235    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 236              "Wayland");
 237    return NULL;
 238 }
 239
 240 /**
 241  * Called via eglDestroySurface(), drv->API.DestroySurface().
 242  */
 243 static EGLBoolean
 244 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 245 {
 246    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 247    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 248    int i;
 249
 250    (void) drv;
 251
 252    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 253
 254    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 255       if (dri2_surf->color_buffers[i].wl_buffer)
 256          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 257       if (dri2_surf->color_buffers[i].dri_image)
 258          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 259       if (dri2_surf->color_buffers[i].linear_copy)
 260          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 261       if (dri2_surf->color_buffers[i].data)
 262          munmap(dri2_surf->color_buffers[i].data,
 263                 dri2_surf->color_buffers[i].data_size);
 264    }
 265
 266    if (dri2_dpy->dri2) {
 267       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 268          if (dri2_surf->dri_buffers[i] &&
 269              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 270             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 271                                           dri2_surf->dri_buffers[i]);
 272    }
 273
 274    if (dri2_surf->throttle_callback)
 275       wl_callback_destroy(dri2_surf->throttle_callback);
 276
 277    if (dri2_surf->wl_win) {
 278       dri2_surf->wl_win->private = NULL;
 279       dri2_surf->wl_win->resize_callback = NULL;
 280       dri2_surf->wl_win->destroy_window_callback = NULL;
 281    }
 282
 283    if (dri2_surf->wl_drm_wrapper)
 284       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 285    wl_proxy_wrapper_destroy(dri2_surf->wl_surface_wrapper);
 286    wl_proxy_wrapper_destroy(dri2_surf->wl_dpy_wrapper);
 287    wl_event_queue_destroy(dri2_surf->wl_queue);
 288
 289    free(surf);
 290
 291    return EGL_TRUE;
 292 }
 293
 294 static void
 295 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 296 {
 297    struct dri2_egl_display *dri2_dpy =
 298       dri2_egl_display(dri2_surf->base.Resource.Display);
 299    int i;
 300
 301    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 302       if (dri2_surf->color_buffers[i].wl_buffer &&
 303           !dri2_surf->color_buffers[i].locked)
 304          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 305       if (dri2_surf->color_buffers[i].dri_image)
 306          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 307       if (dri2_surf->color_buffers[i].linear_copy)
 308          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 309       if (dri2_surf->color_buffers[i].data)
 310          munmap(dri2_surf->color_buffers[i].data,
 311                 dri2_surf->color_buffers[i].data_size);
 312
 313       dri2_surf->color_buffers[i].wl_buffer = NULL;
 314       dri2_surf->color_buffers[i].dri_image = NULL;
 315       dri2_surf->color_buffers[i].linear_copy = NULL;
 316       dri2_surf->color_buffers[i].data = NULL;
 317       dri2_surf->color_buffers[i].locked = false;
 318    }
 319
 320    if (dri2_dpy->dri2) {
 321       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 322          if (dri2_surf->dri_buffers[i] &&
 323              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 324             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 325                                           dri2_surf->dri_buffers[i]);
 326    }
 327 }
 328
 329 static int
 330 get_back_bo(struct dri2_egl_surface *dri2_surf)
 331 {
 332    struct dri2_egl_display *dri2_dpy =
 333       dri2_egl_display(dri2_surf->base.Resource.Display);
 334    int i, use_flags;
 335    unsigned int dri_image_format;
 336
 337    /* currently supports three WL DRM formats,
 338     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 339     * and WL_DRM_FORMAT_RGB565
 340     */
 341    switch (dri2_surf->format) {
 342    case WL_DRM_FORMAT_ARGB8888:
 343       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 344       break;
 345    case WL_DRM_FORMAT_XRGB8888:
 346       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 347       break;
 348    case WL_DRM_FORMAT_RGB565:
 349       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 350       break;
 351    default:
 352       /* format is not supported */
 353       return -1;
 354    }
 355
 356    /* There might be a buffer release already queued that wasn't processed */
 357    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
 358
 359    while (dri2_surf->back == NULL) {
 360       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 361          /* Get an unlocked buffer, preferrably one with a dri_buffer
 362           * already allocated. */
 363          if (dri2_surf->color_buffers[i].locked)
 364             continue;
 365          if (dri2_surf->back == NULL)
 366             dri2_surf->back = &dri2_surf->color_buffers[i];
 367          else if (dri2_surf->back->dri_image == NULL)
 368             dri2_surf->back = &dri2_surf->color_buffers[i];
 369       }
 370
 371       if (dri2_surf->back)
 372          break;
 373
 374       /* If we don't have a buffer, then block on the server to release one for
 375        * us, and try again. */
 376       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_surf->wl_queue) < 0)
 377           return -1;
 378    }
 379
 380    if (dri2_surf->back == NULL)
 381       return -1;
 382
 383    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 384
 385    if (dri2_dpy->is_different_gpu &&
 386        dri2_surf->back->linear_copy == NULL) {
 387        dri2_surf->back->linear_copy =
 388           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 389                                       dri2_surf->base.Width,
 390                                       dri2_surf->base.Height,
 391                                       dri_image_format,
 392                                       use_flags |
 393                                       __DRI_IMAGE_USE_LINEAR,
 394                                       NULL);
 395       if (dri2_surf->back->linear_copy == NULL)
 396           return -1;
 397    }
 398
 399    if (dri2_surf->back->dri_image == NULL) {
 400       dri2_surf->back->dri_image =
 401          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 402                                       dri2_surf->base.Width,
 403                                       dri2_surf->base.Height,
 404                                       dri_image_format,
 405                                       dri2_dpy->is_different_gpu ?
 406                                          0 : use_flags,
 407                                       NULL);
 408       dri2_surf->back->age = 0;
 409    }
 410    if (dri2_surf->back->dri_image == NULL)
 411       return -1;
 412
 413    dri2_surf->back->locked = true;
 414
 415    return 0;
 416 }
 417
 418
 419 static void
 420 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 421 {
 422    struct dri2_egl_display *dri2_dpy =
 423       dri2_egl_display(dri2_surf->base.Resource.Display);
 424    __DRIimage *image;
 425    int name, pitch;
 426
 427    image = dri2_surf->back->dri_image;
 428
 429    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 430    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 431
 432    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 433    buffer->name = name;
 434    buffer->pitch = pitch;
 435    buffer->cpp = 4;
 436    buffer->flags = 0;
 437 }
 438
 439 static int
 440 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 441            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 442 {
 443    struct dri2_egl_display *dri2_dpy =
 444       dri2_egl_display(dri2_surf->base.Resource.Display);
 445    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 446
 447    if (b == NULL) {
 448       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 449                                          attachment, format,
 450                                          dri2_surf->base.Width,
 451                                          dri2_surf->base.Height);
 452       dri2_surf->dri_buffers[attachment] = b;
 453    }
 454    if (b == NULL)
 455       return -1;
 456
 457    memcpy(buffer, b, sizeof *buffer);
 458
 459    return 0;
 460 }
 461
 462 static int
 463 update_buffers(struct dri2_egl_surface *dri2_surf)
 464 {
 465    struct dri2_egl_display *dri2_dpy =
 466       dri2_egl_display(dri2_surf->base.Resource.Display);
 467    int i;
 468
 469    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 470        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 471
 472       dri2_wl_release_buffers(dri2_surf);
 473
 474       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 475       dri2_surf->base.Height = dri2_surf->wl_win->height;
 476       dri2_surf->dx = dri2_surf->wl_win->dx;
 477       dri2_surf->dy = dri2_surf->wl_win->dy;
 478    }
 479
 480    if (get_back_bo(dri2_surf) < 0) {
 481       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 482       return -1;
 483    }
 484
 485    /* If we have an extra unlocked buffer at this point, we had to do triple
 486     * buffering for a while, but now can go back to just double buffering.
 487     * That means we can free any unlocked buffer now. */
 488    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 489       if (!dri2_surf->color_buffers[i].locked &&
 490           dri2_surf->color_buffers[i].wl_buffer) {
 491          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 492          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 493          if (dri2_dpy->is_different_gpu)
 494             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 495          dri2_surf->color_buffers[i].wl_buffer = NULL;
 496          dri2_surf->color_buffers[i].dri_image = NULL;
 497          dri2_surf->color_buffers[i].linear_copy = NULL;
 498       }
 499    }
 500
 501    return 0;
 502 }
 503
 504 static __DRIbuffer *
 505 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 506                                 int *width, int *height,
 507                                 unsigned int *attachments, int count,
 508                                 int *out_count, void *loaderPrivate)
 509 {
 510    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 511    int i, j;
 512
 513    if (update_buffers(dri2_surf) < 0)
 514       return NULL;
 515
 516    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 517       switch (attachments[i]) {
 518       case __DRI_BUFFER_BACK_LEFT:
 519          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 520          break;
 521       default:
 522          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 523                         &dri2_surf->buffers[j]) < 0) {
 524             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 525             return NULL;
 526          }
 527          break;
 528       }
 529    }
 530
 531    *out_count = j;
 532    if (j == 0)
 533            return NULL;
 534
 535    *width = dri2_surf->base.Width;
 536    *height = dri2_surf->base.Height;
 537
 538    return dri2_surf->buffers;
 539 }
 540
 541 static __DRIbuffer *
 542 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 543                     int *width, int *height,
 544                     unsigned int *attachments, int count,
 545                     int *out_count, void *loaderPrivate)
 546 {
 547    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 548    unsigned int *attachments_with_format;
 549    __DRIbuffer *buffer;
 550    unsigned int bpp;
 551
 552    int i;
 553
 554    switch (dri2_surf->format) {
 555    case WL_DRM_FORMAT_ARGB8888:
 556    case WL_DRM_FORMAT_XRGB8888:
 557       bpp = 32;
 558       break;
 559    case WL_DRM_FORMAT_RGB565:
 560       bpp = 16;
 561       break;
 562    default:
 563       /* format is not supported */
 564       return NULL;
 565    }
 566
 567    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 568    if (!attachments_with_format) {
 569       *out_count = 0;
 570       return NULL;
 571    }
 572
 573    for (i = 0; i < count; ++i) {
 574       attachments_with_format[2*i] = attachments[i];
 575       attachments_with_format[2*i + 1] = bpp;
 576    }
 577
 578    buffer =
 579       dri2_wl_get_buffers_with_format(driDrawable,
 580                                       width, height,
 581                                       attachments_with_format, count,
 582                                       out_count, loaderPrivate);
 583
 584    free(attachments_with_format);
 585
 586    return buffer;
 587 }
 588
 589 static int
 590 image_get_buffers(__DRIdrawable *driDrawable,
 591                   unsigned int format,
 592                   uint32_t *stamp,
 593                   void *loaderPrivate,
 594                   uint32_t buffer_mask,
 595                   struct __DRIimageList *buffers)
 596 {
 597    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 598
 599    if (update_buffers(dri2_surf) < 0)
 600       return 0;
 601
 602    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 603    buffers->back = dri2_surf->back->dri_image;
 604
 605    return 1;
 606 }
 607
 608 static void
 609 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 610 {
 611    (void) driDrawable;
 612    (void) loaderPrivate;
 613 }
 614
 615 static const __DRIdri2LoaderExtension dri2_loader_extension = {
 616    .base = { __DRI_DRI2_LOADER, 3 },
 617
 618    .getBuffers           = dri2_wl_get_buffers,
 619    .flushFrontBuffer     = dri2_wl_flush_front_buffer,
 620    .getBuffersWithFormat = dri2_wl_get_buffers_with_format,
 621 };
 622
 623 static const __DRIimageLoaderExtension image_loader_extension = {
 624    .base = { __DRI_IMAGE_LOADER, 1 },
 625
 626    .getBuffers          = image_get_buffers,
 627    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 628 };
 629
 630 static void
 631 wayland_throttle_callback(void *data,
 632                           struct wl_callback *callback,
 633                           uint32_t time)
 634 {
 635    struct dri2_egl_surface *dri2_surf = data;
 636
 637    dri2_surf->throttle_callback = NULL;
 638    wl_callback_destroy(callback);
 639 }
 640
 641 static const struct wl_callback_listener throttle_listener = {
 642    .done = wayland_throttle_callback
 643 };
 644
 645 static void
 646 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 647 {
 648    struct dri2_egl_display *dri2_dpy =
 649       dri2_egl_display(dri2_surf->base.Resource.Display);
 650    __DRIimage *image;
 651    int fd, stride, name;
 652
 653    if (dri2_surf->current->wl_buffer != NULL)
 654       return;
 655
 656    if (dri2_dpy->is_different_gpu) {
 657       image = dri2_surf->current->linear_copy;
 658    } else {
 659       image = dri2_surf->current->dri_image;
 660    }
 661    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 662       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 663       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 664
 665       dri2_surf->current->wl_buffer =
 666          wl_drm_create_prime_buffer(dri2_surf->wl_drm_wrapper,
 667                                     fd,
 668                                     dri2_surf->base.Width,
 669                                     dri2_surf->base.Height,
 670                                     dri2_surf->format,
 671                                     0, stride,
 672                                     0, 0,
 673                                     0, 0);
 674       close(fd);
 675    } else {
 676       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 677       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 678
 679       dri2_surf->current->wl_buffer =
 680          wl_drm_create_buffer(dri2_surf->wl_drm_wrapper,
 681                               name,
 682                               dri2_surf->base.Width,
 683                               dri2_surf->base.Height,
 684                               stride,
 685                               dri2_surf->format);
 686    }
 687
 688    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 689                           &wl_buffer_listener, dri2_surf);
 690 }
 691
 692 static EGLBoolean
 693 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 694                   const EGLint *rects,
 695                   EGLint n_rects)
 696 {
 697    int i;
 698
 699    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_surface_wrapper)
 700        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 701       return EGL_FALSE;
 702
 703    for (i = 0; i < n_rects; i++) {
 704       const int *rect = &rects[i * 4];
 705
 706       wl_surface_damage_buffer(dri2_surf->wl_surface_wrapper,
 707                                rect[0],
 708                                dri2_surf->base.Height - rect[1] - rect[3],
 709                                rect[2], rect[3]);
 710    }
 711    return EGL_TRUE;
 712 }
 713 /**
 714  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 715  */
 716 static EGLBoolean
 717 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 718                                  _EGLDisplay *disp,
 719                                  _EGLSurface *draw,
 720                                  const EGLint *rects,
 721                                  EGLint n_rects)
 722 {
 723    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 724    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 725    int i;
 726
 727    while (dri2_surf->throttle_callback != NULL)
 728       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 729                                     dri2_surf->wl_queue) == -1)
 730          return -1;
 731
 732    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 733       if (dri2_surf->color_buffers[i].age > 0)
 734          dri2_surf->color_buffers[i].age++;
 735
 736    /* Make sure we have a back buffer in case we're swapping without ever
 737     * rendering. */
 738    if (get_back_bo(dri2_surf) < 0) {
 739       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 740       return EGL_FALSE;
 741    }
 742
 743    if (draw->SwapInterval > 0) {
 744       dri2_surf->throttle_callback =
 745          wl_surface_frame(dri2_surf->wl_surface_wrapper);
 746       wl_callback_add_listener(dri2_surf->throttle_callback,
 747                                &throttle_listener, dri2_surf);
 748    }
 749
 750    dri2_surf->back->age = 1;
 751    dri2_surf->current = dri2_surf->back;
 752    dri2_surf->back = NULL;
 753
 754    create_wl_buffer(dri2_surf);
 755
 756    wl_surface_attach(dri2_surf->wl_surface_wrapper,
 757                      dri2_surf->current->wl_buffer,
 758                      dri2_surf->dx, dri2_surf->dy);
 759
 760    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 761    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 762    /* reset resize growing parameters */
 763    dri2_surf->dx = 0;
 764    dri2_surf->dy = 0;
 765
 766    /* If the compositor doesn't support damage_buffer, we deliberately
 767     * ignore the damage region and post maximum damage, due to
 768     * https://bugs.freedesktop.org/78190 */
 769    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 770       wl_surface_damage(dri2_surf->wl_surface_wrapper,
 771                         0, 0, INT32_MAX, INT32_MAX);
 772
 773    if (dri2_dpy->is_different_gpu) {
 774       _EGLContext *ctx = _eglGetCurrentContext();
 775       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 776       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 777                                  dri2_surf->current->linear_copy,
 778                                  dri2_surf->current->dri_image,
 779                                  0, 0, dri2_surf->base.Width,
 780                                  dri2_surf->base.Height,
 781                                  0, 0, dri2_surf->base.Width,
 782                                  dri2_surf->base.Height, 0);
 783    }
 784
 785    dri2_flush_drawable_for_swapbuffers(disp, draw);
 786    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 787
 788    wl_surface_commit(dri2_surf->wl_surface_wrapper);
 789
 790    /* If we're not waiting for a frame callback then we'll at least throttle
 791     * to a sync callback so that we always give a chance for the compositor to
 792     * handle the commit and send a release event before checking for a free
 793     * buffer */
 794    if (dri2_surf->throttle_callback == NULL) {
 795       dri2_surf->throttle_callback = wl_display_sync(dri2_surf->wl_dpy_wrapper);
 796       wl_callback_add_listener(dri2_surf->throttle_callback,
 797                                &throttle_listener, dri2_surf);
 798    }
 799
 800    wl_display_flush(dri2_dpy->wl_dpy);
 801
 802    return EGL_TRUE;
 803 }
 804
 805 static EGLint
 806 dri2_wl_query_buffer_age(_EGLDriver *drv,
 807                          _EGLDisplay *disp, _EGLSurface *surface)
 808 {
 809    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 810
 811    if (get_back_bo(dri2_surf) < 0) {
 812       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 813       return -1;
 814    }
 815
 816    return dri2_surf->back->age;
 817 }
 818
 819 static EGLBoolean
 820 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 821 {
 822    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 823 }
 824
 825 static struct wl_buffer *
 826 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 827                                           _EGLDisplay *disp,
 828                                           _EGLImage *img)
 829 {
 830    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 831    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 832    __DRIimage *image = dri2_img->dri_image;
 833    struct wl_buffer *buffer;
 834    int width, height, format, pitch;
 835    enum wl_drm_format wl_format;
 836
 837    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 838
 839    switch (format) {
 840    case __DRI_IMAGE_FORMAT_ARGB8888:
 841       if (!(dri2_dpy->formats & HAS_ARGB8888))
 842          goto bad_format;
 843       wl_format = WL_DRM_FORMAT_ARGB8888;
 844       break;
 845    case __DRI_IMAGE_FORMAT_XRGB8888:
 846       if (!(dri2_dpy->formats & HAS_XRGB8888))
 847          goto bad_format;
 848       wl_format = WL_DRM_FORMAT_XRGB8888;
 849       break;
 850    default:
 851       goto bad_format;
 852    }
 853
 854    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 855    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 856    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 857
 858    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 859       int fd;
 860
 861       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 862
 863       buffer =
 864          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 865                                     fd,
 866                                     width, height,
 867                                     wl_format,
 868                                     0, pitch,
 869                                     0, 0,
 870                                     0, 0);
 871
 872       close(fd);
 873    } else {
 874       int name;
 875
 876       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 877
 878       buffer =
 879          wl_drm_create_buffer(dri2_dpy->wl_drm,
 880                               name,
 881                               width, height,
 882                               pitch,
 883                               wl_format);
 884    }
 885
 886    /* The buffer object will have been created with our internal event queue
 887     * because it is using the wl_drm object as a proxy factory. We want the
 888     * buffer to be used by the application so we'll reset it to the display's
 889     * default event queue */
 890    if (buffer)
 891       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 892
 893    return buffer;
 894
 895 bad_format:
 896    _eglError(EGL_BAD_MATCH, "unsupported image format");
 897    return NULL;
 898 }
 899
 900 static int
 901 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 902 {
 903    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 904    int ret = 0;
 905
 906    if (dri2_dpy->is_render_node) {
 907       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 908                             "authenticate for render-nodes");
 909       return 0;
 910    }
 911    dri2_dpy->authenticated = false;
 912
 913    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 914    if (roundtrip(dri2_dpy) < 0)
 915       ret = -1;
 916
 917    if (!dri2_dpy->authenticated)
 918       ret = -1;
 919
 920    /* reset authenticated */
 921    dri2_dpy->authenticated = true;
 922
 923    return ret;
 924 }
 925
 926 static void
 927 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 928 {
 929    struct dri2_egl_display *dri2_dpy = data;
 930    drm_magic_t magic;
 931
 932    dri2_dpy->device_name = strdup(device);
 933    if (!dri2_dpy->device_name)
 934       return;
 935
 936    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 937    if (dri2_dpy->fd == -1) {
 938       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 939               dri2_dpy->device_name, strerror(errno));
 940       return;
 941    }
 942
 943    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 944       dri2_dpy->authenticated = true;
 945    } else {
 946       drmGetMagic(dri2_dpy->fd, &magic);
 947       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 948    }
 949 }
 950
 951 static void
 952 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 953 {
 954    struct dri2_egl_display *dri2_dpy = data;
 955
 956    switch (format) {
 957    case WL_DRM_FORMAT_ARGB8888:
 958       dri2_dpy->formats |= HAS_ARGB8888;
 959       break;
 960    case WL_DRM_FORMAT_XRGB8888:
 961       dri2_dpy->formats |= HAS_XRGB8888;
 962       break;
 963    case WL_DRM_FORMAT_RGB565:
 964       dri2_dpy->formats |= HAS_RGB565;
 965       break;
 966    }
 967 }
 968
 969 static void
 970 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 971 {
 972    struct dri2_egl_display *dri2_dpy = data;
 973
 974    dri2_dpy->capabilities = value;
 975 }
 976
 977 static void
 978 drm_handle_authenticated(void *data, struct wl_drm *drm)
 979 {
 980    struct dri2_egl_display *dri2_dpy = data;
 981
 982    dri2_dpy->authenticated = true;
 983 }
 984
 985 static const struct wl_drm_listener drm_listener = {
 986    .device = drm_handle_device,
 987    .format = drm_handle_format,
 988    .authenticated = drm_handle_authenticated,
 989    .capabilities = drm_handle_capabilities
 990 };
 991
 992 static void
 993 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 994                        const char *interface, uint32_t version)
 995 {
 996    struct dri2_egl_display *dri2_dpy = data;
 997
 998    if (version > 1)
 999       version = 2;
1000    if (strcmp(interface, "wl_drm") == 0) {
1001       dri2_dpy->wl_drm =
1002          wl_registry_bind(registry, name, &wl_drm_interface, version);
1003       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
1004    }
1005 }
1006
1007 static void
1008 registry_handle_global_remove(void *data, struct wl_registry *registry,
1009                               uint32_t name)
1010 {
1011 }
1012
1013 static const struct wl_registry_listener registry_listener_drm = {
1014    .global = registry_handle_global_drm,
1015    .global_remove = registry_handle_global_remove
1016 };
1017
1018 static EGLBoolean
1019 dri2_wl_swap_interval(_EGLDriver *drv,
1020                    _EGLDisplay *disp,
1021                    _EGLSurface *surf,
1022                    EGLint interval)
1023 {
1024    if (interval > surf->Config->MaxSwapInterval)
1025       interval = surf->Config->MaxSwapInterval;
1026    else if (interval < surf->Config->MinSwapInterval)
1027       interval = surf->Config->MinSwapInterval;
1028
1029    surf->SwapInterval = interval;
1030
1031    return EGL_TRUE;
1032 }
1033
1034 static void
1035 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1036 {
1037    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1038
1039    /* We can't use values greater than 1 on Wayland because we are using the
1040     * frame callback to synchronise the frame and the only way we be sure to
1041     * get a frame callback is to attach a new buffer. Therefore we can't just
1042     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1043
1044    if (dri2_dpy->config)
1045       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1046                                      "vblank_mode", &vblank_mode);
1047    switch (vblank_mode) {
1048    case DRI_CONF_VBLANK_NEVER:
1049       dri2_dpy->min_swap_interval = 0;
1050       dri2_dpy->max_swap_interval = 0;
1051       dri2_dpy->default_swap_interval = 0;
1052       break;
1053    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1054       dri2_dpy->min_swap_interval = 1;
1055       dri2_dpy->max_swap_interval = 1;
1056       dri2_dpy->default_swap_interval = 1;
1057       break;
1058    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1059       dri2_dpy->min_swap_interval = 0;
1060       dri2_dpy->max_swap_interval = 1;
1061       dri2_dpy->default_swap_interval = 0;
1062       break;
1063    default:
1064    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1065       dri2_dpy->min_swap_interval = 0;
1066       dri2_dpy->max_swap_interval = 1;
1067       dri2_dpy->default_swap_interval = 1;
1068       break;
1069    }
1070 }
1071
1072 static const struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1073    .authenticate = dri2_wl_authenticate,
1074    .create_window_surface = dri2_wl_create_window_surface,
1075    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1076    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1077    .destroy_surface = dri2_wl_destroy_surface,
1078    .create_image = dri2_create_image_khr,
1079    .swap_interval = dri2_wl_swap_interval,
1080    .swap_buffers = dri2_wl_swap_buffers,
1081    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1082    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1083    .set_damage_region = dri2_fallback_set_damage_region,
1084    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1085    .copy_buffers = dri2_fallback_copy_buffers,
1086    .query_buffer_age = dri2_wl_query_buffer_age,
1087    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1088    .get_sync_values = dri2_fallback_get_sync_values,
1089    .get_dri_drawable = dri2_surface_get_dri_drawable,
1090 };
1091
1092 static const __DRIextension *dri2_loader_extensions[] = {
1093    &dri2_loader_extension.base,
1094    &image_loader_extension.base,
1095    &image_lookup_extension.base,
1096    &use_invalidate.base,
1097    NULL,
1098 };
1099
1100 static const __DRIextension *image_loader_extensions[] = {
1101    &image_loader_extension.base,
1102    &image_lookup_extension.base,
1103    &use_invalidate.base,
1104    NULL,
1105 };
1106
1107 static EGLBoolean
1108 dri2_wl_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
1109 {
1110    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1111    static const struct {
1112       const char *format_name;
1113       int has_format;
1114       unsigned int rgba_masks[4];
1115    } visuals[] = {
1116       { "XRGB8888", HAS_XRGB8888, { 0xff0000, 0xff00, 0x00ff, 0xff000000 } },
1117       { "ARGB8888", HAS_ARGB8888, { 0xff0000, 0xff00, 0x00ff, 0 } },
1118       { "RGB565",   HAS_RGB565,   { 0x00f800, 0x07e0, 0x001f, 0 } },
1119    };
1120    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
1121    unsigned int count, i, j;
1122
1123    count = 0;
1124    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1125       for (j = 0; j < ARRAY_SIZE(visuals); j++) {
1126          struct dri2_egl_config *dri2_conf;
1127
1128          if (!(dri2_dpy->formats & visuals[j].has_format))
1129             continue;
1130
1131          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
1132                count + 1, EGL_WINDOW_BIT, NULL, visuals[j].rgba_masks);
1133          if (dri2_conf) {
1134             count++;
1135             format_count[j]++;
1136          }
1137       }
1138    }
1139
1140    for (i = 0; i < ARRAY_SIZE(format_count); i++) {
1141       if (!format_count[i]) {
1142          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
1143                  visuals[i].format_name);
1144       }
1145    }
1146
1147    return (count != 0);
1148 }
1149
1150 static EGLBoolean
1151 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1152 {
1153    struct dri2_egl_display *dri2_dpy;
1154
1155    loader_set_logger(_eglLog);
1156
1157    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1158    if (!dri2_dpy)
1159       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1160
1161    dri2_dpy->fd = -1;
1162    disp->DriverData = (void *) dri2_dpy;
1163    if (disp->PlatformDisplay == NULL) {
1164       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1165       if (dri2_dpy->wl_dpy == NULL)
1166          goto cleanup;
1167       dri2_dpy->own_device = true;
1168    } else {
1169       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1170    }
1171
1172    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1173
1174    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1175    if (dri2_dpy->wl_dpy_wrapper == NULL)
1176       goto cleanup;
1177
1178    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1179                       dri2_dpy->wl_queue);
1180
1181    if (dri2_dpy->own_device)
1182       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1183
1184    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1185    wl_registry_add_listener(dri2_dpy->wl_registry,
1186                             &registry_listener_drm, dri2_dpy);
1187    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1188       goto cleanup;
1189
1190    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1191       goto cleanup;
1192
1193    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1194       goto cleanup;
1195
1196    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1197                                                &dri2_dpy->is_different_gpu);
1198    if (dri2_dpy->is_different_gpu) {
1199       free(dri2_dpy->device_name);
1200       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1201       if (!dri2_dpy->device_name) {
1202          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1203                                   "for requested GPU");
1204          goto cleanup;
1205       }
1206    }
1207
1208    /* we have to do the check now, because loader_get_user_preferred_fd
1209     * will return a render-node when the requested gpu is different
1210     * to the server, but also if the client asks for the same gpu than
1211     * the server by requesting its pci-id */
1212    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1213
1214    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
1215    if (dri2_dpy->driver_name == NULL) {
1216       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1217       goto cleanup;
1218    }
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       if (!dri2_load_driver(disp)) {
1225          _eglError(EGL_BAD_ALLOC, "DRI2: failed to load driver");
1226          goto cleanup;
1227       }
1228    } else {
1229       dri2_dpy->loader_extensions = image_loader_extensions;
1230       if (!dri2_load_driver_dri3(disp)) {
1231          _eglError(EGL_BAD_ALLOC, "DRI3: failed to load driver");
1232          goto cleanup;
1233       }
1234    }
1235
1236    if (!dri2_create_screen(disp))
1237       goto cleanup;
1238
1239    if (!dri2_setup_extensions(disp))
1240       goto cleanup;
1241
1242    dri2_setup_screen(disp);
1243
1244    dri2_wl_setup_swap_interval(dri2_dpy);
1245
1246    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1247     * createImageFromFds support indicates that Prime export/import
1248     * is supported by the driver. Fall back to
1249     * gem names if we don't have Prime support. */
1250
1251    if (dri2_dpy->image->base.version < 7 ||
1252        dri2_dpy->image->createImageFromFds == NULL)
1253       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1254
1255    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1256     * The server needs to accept them */
1257    if (dri2_dpy->is_render_node &&
1258        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1259       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1260       goto cleanup;
1261    }
1262
1263    if (dri2_dpy->is_different_gpu &&
1264        (dri2_dpy->image->base.version < 9 ||
1265         dri2_dpy->image->blitImage == NULL)) {
1266       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1267                             "Image extension in the driver is not "
1268                             "compatible. Version 9 or later and blitImage() "
1269                             "are required");
1270       goto cleanup;
1271    }
1272
1273    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1274       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1275       goto cleanup;
1276    }
1277
1278    dri2_set_WL_bind_wayland_display(drv, disp);
1279    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1280     * because the buffer of the EGLImage has likely a tiling mode the server
1281     * gpu won't support. These is no way to check for now. Thus do not support the
1282     * extension */
1283    if (!dri2_dpy->is_different_gpu)
1284       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1285
1286    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1287
1288    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1289
1290    /* Fill vtbl last to prevent accidentally calling virtual function during
1291     * initialization.
1292     */
1293    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1294
1295    return EGL_TRUE;
1296
1297  cleanup:
1298    dri2_display_destroy(disp);
1299    return EGL_FALSE;
1300 }
1301
1302 static int
1303 dri2_wl_swrast_get_stride_for_format(int format, int w)
1304 {
1305    if (format == WL_SHM_FORMAT_RGB565)
1306       return 2 * w;
1307    else /* ARGB8888 || XRGB8888 */
1308       return 4 * w;
1309 }
1310
1311 /*
1312  * Taken from weston shared/os-compatibility.c
1313  */
1314
1315 #ifndef HAVE_MKOSTEMP
1316
1317 static int
1318 set_cloexec_or_close(int fd)
1319 {
1320    long flags;
1321
1322    if (fd == -1)
1323       return -1;
1324
1325    flags = fcntl(fd, F_GETFD);
1326    if (flags == -1)
1327       goto err;
1328
1329    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1330       goto err;
1331
1332    return fd;
1333
1334 err:
1335    close(fd);
1336    return -1;
1337 }
1338
1339 #endif
1340
1341 /*
1342  * Taken from weston shared/os-compatibility.c
1343  */
1344
1345 static int
1346 create_tmpfile_cloexec(char *tmpname)
1347 {
1348    int fd;
1349
1350 #ifdef HAVE_MKOSTEMP
1351    fd = mkostemp(tmpname, O_CLOEXEC);
1352    if (fd >= 0)
1353       unlink(tmpname);
1354 #else
1355    fd = mkstemp(tmpname);
1356    if (fd >= 0) {
1357       fd = set_cloexec_or_close(fd);
1358       unlink(tmpname);
1359    }
1360 #endif
1361
1362    return fd;
1363 }
1364
1365 /*
1366  * Taken from weston shared/os-compatibility.c
1367  *
1368  * Create a new, unique, anonymous file of the given size, and
1369  * return the file descriptor for it. The file descriptor is set
1370  * CLOEXEC. The file is immediately suitable for mmap()'ing
1371  * the given size at offset zero.
1372  *
1373  * The file should not have a permanent backing store like a disk,
1374  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1375  *
1376  * The file name is deleted from the file system.
1377  *
1378  * The file is suitable for buffer sharing between processes by
1379  * transmitting the file descriptor over Unix sockets using the
1380  * SCM_RIGHTS methods.
1381  *
1382  * If the C library implements posix_fallocate(), it is used to
1383  * guarantee that disk space is available for the file at the
1384  * given size. If disk space is insufficent, errno is set to ENOSPC.
1385  * If posix_fallocate() is not supported, program may receive
1386  * SIGBUS on accessing mmap()'ed file contents instead.
1387  */
1388 static int
1389 os_create_anonymous_file(off_t size)
1390 {
1391    static const char template[] = "/mesa-shared-XXXXXX";
1392    const char *path;
1393    char *name;
1394    int fd;
1395    int ret;
1396
1397    path = getenv("XDG_RUNTIME_DIR");
1398    if (!path) {
1399       errno = ENOENT;
1400       return -1;
1401    }
1402
1403    name = malloc(strlen(path) + sizeof(template));
1404    if (!name)
1405       return -1;
1406
1407    strcpy(name, path);
1408    strcat(name, template);
1409
1410    fd = create_tmpfile_cloexec(name);
1411
1412    free(name);
1413
1414    if (fd < 0)
1415       return -1;
1416
1417    ret = ftruncate(fd, size);
1418    if (ret < 0) {
1419       close(fd);
1420       return -1;
1421    }
1422
1423    return fd;
1424 }
1425
1426
1427 static EGLBoolean
1428 dri2_wl_swrast_allocate_buffer(struct dri2_egl_surface *dri2_surf,
1429                                int format, int w, int h,
1430                                void **data, int *size,
1431                                struct wl_buffer **buffer)
1432 {
1433    struct dri2_egl_display *dri2_dpy =
1434       dri2_egl_display(dri2_surf->base.Resource.Display);
1435    struct wl_shm_pool *pool;
1436    int fd, stride, size_map;
1437    void *data_map;
1438
1439    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1440    size_map = h * stride;
1441
1442    /* Create a sharable buffer */
1443    fd = os_create_anonymous_file(size_map);
1444    if (fd < 0)
1445       return EGL_FALSE;
1446
1447    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1448    if (data_map == MAP_FAILED) {
1449       close(fd);
1450       return EGL_FALSE;
1451    }
1452
1453    /* Share it in a wl_buffer */
1454    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1455    wl_proxy_set_queue((struct wl_proxy *)pool, dri2_surf->wl_queue);
1456    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1457    wl_shm_pool_destroy(pool);
1458    close(fd);
1459
1460    *data = data_map;
1461    *size = size_map;
1462    return EGL_TRUE;
1463 }
1464
1465 static int
1466 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1467 {
1468    struct dri2_egl_display *dri2_dpy =
1469       dri2_egl_display(dri2_surf->base.Resource.Display);
1470    int i;
1471
1472    /* we need to do the following operations only once per frame */
1473    if (dri2_surf->back)
1474       return 0;
1475
1476    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1477        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1478
1479       dri2_wl_release_buffers(dri2_surf);
1480
1481       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1482       dri2_surf->base.Height = dri2_surf->wl_win->height;
1483       dri2_surf->dx = dri2_surf->wl_win->dx;
1484       dri2_surf->dy = dri2_surf->wl_win->dy;
1485       dri2_surf->current = NULL;
1486    }
1487
1488    /* find back buffer */
1489
1490    /* There might be a buffer release already queued that wasn't processed */
1491    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
1492
1493    /* try get free buffer already created */
1494    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1495       if (!dri2_surf->color_buffers[i].locked &&
1496           dri2_surf->color_buffers[i].wl_buffer) {
1497           dri2_surf->back = &dri2_surf->color_buffers[i];
1498           break;
1499       }
1500    }
1501
1502    /* else choose any another free location */
1503    if (!dri2_surf->back) {
1504       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1505          if (!dri2_surf->color_buffers[i].locked) {
1506              dri2_surf->back = &dri2_surf->color_buffers[i];
1507              if (!dri2_wl_swrast_allocate_buffer(dri2_surf,
1508                                                  dri2_surf->format,
1509                                                  dri2_surf->base.Width,
1510                                                  dri2_surf->base.Height,
1511                                                  &dri2_surf->back->data,
1512                                                  &dri2_surf->back->data_size,
1513                                                  &dri2_surf->back->wl_buffer)) {
1514                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1515                  return -1;
1516              }
1517              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1518                                     &wl_buffer_listener, dri2_surf);
1519              break;
1520          }
1521       }
1522    }
1523
1524    if (!dri2_surf->back) {
1525       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1526       return -1;
1527    }
1528
1529    dri2_surf->back->locked = true;
1530
1531    /* If we have an extra unlocked buffer at this point, we had to do triple
1532     * buffering for a while, but now can go back to just double buffering.
1533     * That means we can free any unlocked buffer now. */
1534    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1535       if (!dri2_surf->color_buffers[i].locked &&
1536           dri2_surf->color_buffers[i].wl_buffer) {
1537          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1538          munmap(dri2_surf->color_buffers[i].data,
1539                 dri2_surf->color_buffers[i].data_size);
1540          dri2_surf->color_buffers[i].wl_buffer = NULL;
1541          dri2_surf->color_buffers[i].data = NULL;
1542       }
1543    }
1544
1545    return 0;
1546 }
1547
1548 static void*
1549 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1550 {
1551    /* if there has been a resize: */
1552    if (!dri2_surf->current)
1553       return NULL;
1554
1555    return dri2_surf->current->data;
1556 }
1557
1558 static void*
1559 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1560 {
1561    assert(dri2_surf->back);
1562    return dri2_surf->back->data;
1563 }
1564
1565 static void
1566 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1567 {
1568    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1569
1570    while (dri2_surf->throttle_callback != NULL)
1571       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1572                                     dri2_surf->wl_queue) == -1)
1573          return;
1574
1575    if (dri2_surf->base.SwapInterval > 0) {
1576       dri2_surf->throttle_callback =
1577          wl_surface_frame(dri2_surf->wl_surface_wrapper);
1578       wl_callback_add_listener(dri2_surf->throttle_callback,
1579                                &throttle_listener, dri2_surf);
1580    }
1581
1582    dri2_surf->current = dri2_surf->back;
1583    dri2_surf->back = NULL;
1584
1585    wl_surface_attach(dri2_surf->wl_surface_wrapper,
1586                      dri2_surf->current->wl_buffer,
1587                      dri2_surf->dx, dri2_surf->dy);
1588
1589    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1590    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1591    /* reset resize growing parameters */
1592    dri2_surf->dx = 0;
1593    dri2_surf->dy = 0;
1594
1595    wl_surface_damage(dri2_surf->wl_surface_wrapper,
1596                      0, 0, INT32_MAX, INT32_MAX);
1597    wl_surface_commit(dri2_surf->wl_surface_wrapper);
1598
1599    /* If we're not waiting for a frame callback then we'll at least throttle
1600     * to a sync callback so that we always give a chance for the compositor to
1601     * handle the commit and send a release event before checking for a free
1602     * buffer */
1603    if (dri2_surf->throttle_callback == NULL) {
1604       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy_wrapper);
1605       wl_callback_add_listener(dri2_surf->throttle_callback,
1606                                &throttle_listener, dri2_surf);
1607    }
1608
1609    wl_display_flush(dri2_dpy->wl_dpy);
1610 }
1611
1612 static void
1613 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1614                                  int *x, int *y, int *w, int *h,
1615                                  void *loaderPrivate)
1616 {
1617    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1618
1619    (void) swrast_update_buffers(dri2_surf);
1620    *x = 0;
1621    *y = 0;
1622    *w = dri2_surf->base.Width;
1623    *h = dri2_surf->base.Height;
1624 }
1625
1626 static void
1627 dri2_wl_swrast_get_image(__DRIdrawable * read,
1628                          int x, int y, int w, int h,
1629                          char *data, void *loaderPrivate)
1630 {
1631    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1632    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1633    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1634    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1635    int dst_stride = copy_width;
1636    char *src, *dst;
1637
1638    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1639    if (!src) {
1640       memset(data, 0, copy_width * h);
1641       return;
1642    }
1643
1644    assert(data != src);
1645    assert(copy_width <= src_stride);
1646
1647    src += x_offset;
1648    src += y * src_stride;
1649    dst = data;
1650
1651    if (copy_width > src_stride-x_offset)
1652       copy_width = src_stride-x_offset;
1653    if (h > dri2_surf->base.Height-y)
1654       h = dri2_surf->base.Height-y;
1655
1656    for (; h>0; h--) {
1657       memcpy(dst, src, copy_width);
1658       src += src_stride;
1659       dst += dst_stride;
1660    }
1661 }
1662
1663 static void
1664 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1665                          int x, int y, int w, int h, int stride,
1666                          char *data, void *loaderPrivate)
1667 {
1668    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1669    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1670    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1671    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1672    char *src, *dst;
1673
1674    assert(copy_width <= stride);
1675
1676    (void) swrast_update_buffers(dri2_surf);
1677    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1678
1679    /* partial copy, copy old content */
1680    if (copy_width < dst_stride)
1681       dri2_wl_swrast_get_image(draw, 0, 0,
1682                                dri2_surf->base.Width, dri2_surf->base.Height,
1683                                dst, loaderPrivate);
1684
1685    dst += x_offset;
1686    dst += y * dst_stride;
1687
1688    src = data;
1689
1690    /* drivers expect we do these checks (and some rely on it) */
1691    if (copy_width > dst_stride-x_offset)
1692       copy_width = dst_stride-x_offset;
1693    if (h > dri2_surf->base.Height-y)
1694       h = dri2_surf->base.Height-y;
1695
1696    for (; h>0; h--) {
1697       memcpy(dst, src, copy_width);
1698       src += stride;
1699       dst += dst_stride;
1700    }
1701    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1702 }
1703
1704 static void
1705 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1706                          int x, int y, int w, int h,
1707                          char *data, void *loaderPrivate)
1708 {
1709    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1710    int stride;
1711
1712    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1713    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1714                              stride, data, loaderPrivate);
1715 }
1716
1717 static EGLBoolean
1718 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1719 {
1720    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1721    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1722
1723    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1724    return EGL_TRUE;
1725 }
1726
1727 static void
1728 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1729 {
1730    struct dri2_egl_display *dri2_dpy = data;
1731
1732    switch (format) {
1733    case WL_SHM_FORMAT_ARGB8888:
1734       dri2_dpy->formats |= HAS_ARGB8888;
1735       break;
1736    case WL_SHM_FORMAT_XRGB8888:
1737       dri2_dpy->formats |= HAS_XRGB8888;
1738       break;
1739    case WL_SHM_FORMAT_RGB565:
1740       dri2_dpy->formats |= HAS_RGB565;
1741       break;
1742    }
1743 }
1744
1745 static const struct wl_shm_listener shm_listener = {
1746    .format = shm_handle_format
1747 };
1748
1749 static void
1750 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1751                               const char *interface, uint32_t version)
1752 {
1753    struct dri2_egl_display *dri2_dpy = data;
1754
1755    if (strcmp(interface, "wl_shm") == 0) {
1756       dri2_dpy->wl_shm =
1757          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1758       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1759    }
1760 }
1761
1762 static const struct wl_registry_listener registry_listener_swrast = {
1763    .global = registry_handle_global_swrast,
1764    .global_remove = registry_handle_global_remove
1765 };
1766
1767 static const struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1768    .authenticate = NULL,
1769    .create_window_surface = dri2_wl_create_window_surface,
1770    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1771    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1772    .destroy_surface = dri2_wl_destroy_surface,
1773    .create_image = dri2_fallback_create_image_khr,
1774    .swap_interval = dri2_wl_swap_interval,
1775    .swap_buffers = dri2_wl_swrast_swap_buffers,
1776    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1777    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1778    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1779    .copy_buffers = dri2_fallback_copy_buffers,
1780    .query_buffer_age = dri2_fallback_query_buffer_age,
1781    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1782    .get_sync_values = dri2_fallback_get_sync_values,
1783    .get_dri_drawable = dri2_surface_get_dri_drawable,
1784 };
1785
1786 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1787    .base = { __DRI_SWRAST_LOADER, 2 },
1788
1789    .getDrawableInfo = dri2_wl_swrast_get_drawable_info,
1790    .putImage        = dri2_wl_swrast_put_image,
1791    .getImage        = dri2_wl_swrast_get_image,
1792    .putImage2       = dri2_wl_swrast_put_image2,
1793 };
1794
1795 static const __DRIextension *swrast_loader_extensions[] = {
1796    &swrast_loader_extension.base,
1797    NULL,
1798 };
1799
1800 static EGLBoolean
1801 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1802 {
1803    struct dri2_egl_display *dri2_dpy;
1804
1805    loader_set_logger(_eglLog);
1806
1807    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1808    if (!dri2_dpy)
1809       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1810
1811    dri2_dpy->fd = -1;
1812    disp->DriverData = (void *) dri2_dpy;
1813    if (disp->PlatformDisplay == NULL) {
1814       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1815       if (dri2_dpy->wl_dpy == NULL)
1816          goto cleanup;
1817       dri2_dpy->own_device = true;
1818    } else {
1819       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1820    }
1821
1822    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1823
1824    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1825    if (dri2_dpy->wl_dpy_wrapper == NULL)
1826       goto cleanup;
1827
1828    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1829                       dri2_dpy->wl_queue);
1830
1831    if (dri2_dpy->own_device)
1832       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1833
1834    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1835    wl_registry_add_listener(dri2_dpy->wl_registry,
1836                             &registry_listener_swrast, dri2_dpy);
1837
1838    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1839       goto cleanup;
1840
1841    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1842       goto cleanup;
1843
1844    dri2_dpy->driver_name = strdup("swrast");
1845    if (!dri2_load_driver_swrast(disp))
1846       goto cleanup;
1847
1848    dri2_dpy->loader_extensions = swrast_loader_extensions;
1849
1850    if (!dri2_create_screen(disp))
1851       goto cleanup;
1852
1853    if (!dri2_setup_extensions(disp))
1854       goto cleanup;
1855
1856    dri2_setup_screen(disp);
1857
1858    dri2_wl_setup_swap_interval(dri2_dpy);
1859
1860    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1861       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1862       goto cleanup;
1863    }
1864
1865    /* Fill vtbl last to prevent accidentally calling virtual function during
1866     * initialization.
1867     */
1868    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1869
1870    return EGL_TRUE;
1871
1872  cleanup:
1873    dri2_display_destroy(disp);
1874    return EGL_FALSE;
1875 }
1876
1877 EGLBoolean
1878 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1879 {
1880    EGLBoolean initialized = EGL_TRUE;
1881
1882    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1883
1884    if (hw_accel) {
1885       if (!dri2_initialize_wayland_drm(drv, disp)) {
1886          initialized = dri2_initialize_wayland_swrast(drv, disp);
1887       }
1888    } else {
1889       initialized = dri2_initialize_wayland_swrast(drv, disp);
1890    }
1891
1892    return initialized;
1893
1894 }