src/egl/drivers/dri2/platform_wayland.c

   1 /*
   2  * Copyright © 2011-2012 Intel Corporation
   3  * Copyright © 2012 Collabora, Ltd.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  20  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Kristian Høgsberg <krh@bitplanet.net>
  27  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  28  */
  29
  30 #include <stdint.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <limits.h>
  34 #include <dlfcn.h>
  35 #include <errno.h>
  36 #include <unistd.h>
  37 #include <fcntl.h>
  38 #include <xf86drm.h>
  39 #include <sys/mman.h>
  40
  41 #include "egl_dri2.h"
  42 #include "egl_dri2_fallbacks.h"
  43 #include "loader.h"
  44
  45 #include <wayland-client.h>
  46 #include "wayland-drm-client-protocol.h"
  47
  48 enum wl_drm_format_flags {
  49    HAS_ARGB8888 = 1,
  50    HAS_XRGB8888 = 2,
  51    HAS_RGB565 = 4,
  52 };
  53
  54 static EGLBoolean
  55 dri2_wl_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  56                       EGLint interval);
  57
  58 static void
  59 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  60 {
  61    int *done = data;
  62
  63    *done = 1;
  64    wl_callback_destroy(callback);
  65 }
  66
  67 static const struct wl_callback_listener sync_listener = {
  68    .done = sync_callback
  69 };
  70
  71 static int
  72 roundtrip(struct dri2_egl_display *dri2_dpy)
  73 {
  74    struct wl_callback *callback;
  75    int done = 0, ret = 0;
  76
  77    callback = wl_display_sync(dri2_dpy->wl_dpy_wrapper);
  78    wl_callback_add_listener(callback, &sync_listener, &done);
  79    while (ret != -1 && !done)
  80       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  81
  82    if (!done)
  83       wl_callback_destroy(callback);
  84
  85    return ret;
  86 }
  87
  88 static void
  89 wl_buffer_release(void *data, struct wl_buffer *buffer)
  90 {
  91    struct dri2_egl_surface *dri2_surf = data;
  92    int i;
  93
  94    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  95       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  96          break;
  97
  98    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
  99       wl_buffer_destroy(buffer);
 100       return;
 101    }
 102
 103    dri2_surf->color_buffers[i].locked = 0;
 104 }
 105
 106 static const struct wl_buffer_listener wl_buffer_listener = {
 107    .release = wl_buffer_release
 108 };
 109
 110 static void
 111 resize_callback(struct wl_egl_window *wl_win, void *data)
 112 {
 113    struct dri2_egl_surface *dri2_surf = data;
 114    struct dri2_egl_display *dri2_dpy =
 115       dri2_egl_display(dri2_surf->base.Resource.Display);
 116
 117    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 118 }
 119
 120 static void
 121 destroy_window_callback(void *data)
 122 {
 123    struct dri2_egl_surface *dri2_surf = data;
 124    dri2_surf->wl_win = NULL;
 125 }
 126
 127 /**
 128  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 129  */
 130 static _EGLSurface *
 131 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 132                               _EGLConfig *conf, void *native_window,
 133                               const EGLint *attrib_list)
 134 {
 135    __DRIcreateNewDrawableFunc createNewDrawable;
 136    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 137    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 138    struct wl_egl_window *window = native_window;
 139    struct dri2_egl_surface *dri2_surf;
 140    const __DRIconfig *config;
 141
 142    dri2_surf = calloc(1, sizeof *dri2_surf);
 143    if (!dri2_surf) {
 144       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 145       return NULL;
 146    }
 147
 148    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 149       goto cleanup_surf;
 150
 151    if (conf->RedSize == 5)
 152       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 153    else if (conf->AlphaSize == 0)
 154       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 155    else
 156       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 157
 158    if (!window) {
 159       _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 160       goto cleanup_surf;
 161    }
 162
 163    dri2_surf->wl_win = window;
 164
 165    dri2_surf->wl_win->private = dri2_surf;
 166    dri2_surf->wl_win->destroy_window_callback = destroy_window_callback;
 167
 168    dri2_surf->base.Width =  -1;
 169    dri2_surf->base.Height = -1;
 170
 171    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 172                                 dri2_surf->base.GLColorspace);
 173
 174    if (dri2_dpy->dri2) {
 175       dri2_surf->wl_win->resize_callback = resize_callback;
 176
 177       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
 178    } else {
 179       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
 180    }
 181
 182    dri2_surf->dri_drawable = (*createNewDrawable)(dri2_dpy->dri_screen, config,
 183                                                   dri2_surf);
 184     if (dri2_surf->dri_drawable == NULL) {
 185       _eglError(EGL_BAD_ALLOC, "createNewDrawable");
 186        goto cleanup_surf;
 187     }
 188
 189    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
 190                          dri2_dpy->default_swap_interval);
 191
 192    return &dri2_surf->base;
 193
 194  cleanup_surf:
 195    free(dri2_surf);
 196
 197    return NULL;
 198 }
 199
 200 static _EGLSurface *
 201 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 202                               _EGLConfig *conf, void *native_window,
 203                               const EGLint *attrib_list)
 204 {
 205    /* From the EGL_EXT_platform_wayland spec, version 3:
 206     *
 207     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 208     *   that belongs to Wayland. Any such call fails and generates
 209     *   EGL_BAD_PARAMETER.
 210     */
 211    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 212              "Wayland");
 213    return NULL;
 214 }
 215
 216 /**
 217  * Called via eglDestroySurface(), drv->API.DestroySurface().
 218  */
 219 static EGLBoolean
 220 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 221 {
 222    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 223    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 224    int i;
 225
 226    (void) drv;
 227
 228    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 229
 230    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 231       if (dri2_surf->color_buffers[i].wl_buffer)
 232          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 233       if (dri2_surf->color_buffers[i].dri_image)
 234          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 235       if (dri2_surf->color_buffers[i].linear_copy)
 236          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 237       if (dri2_surf->color_buffers[i].data)
 238          munmap(dri2_surf->color_buffers[i].data,
 239                 dri2_surf->color_buffers[i].data_size);
 240    }
 241
 242    if (dri2_dpy->dri2) {
 243       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 244          if (dri2_surf->dri_buffers[i] &&
 245              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 246             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 247                                           dri2_surf->dri_buffers[i]);
 248    }
 249
 250    if (dri2_surf->throttle_callback)
 251       wl_callback_destroy(dri2_surf->throttle_callback);
 252
 253    if (dri2_surf->wl_win) {
 254       dri2_surf->wl_win->private = NULL;
 255       dri2_surf->wl_win->resize_callback = NULL;
 256       dri2_surf->wl_win->destroy_window_callback = NULL;
 257    }
 258
 259    free(surf);
 260
 261    return EGL_TRUE;
 262 }
 263
 264 static void
 265 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 266 {
 267    struct dri2_egl_display *dri2_dpy =
 268       dri2_egl_display(dri2_surf->base.Resource.Display);
 269    int i;
 270
 271    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 272       if (dri2_surf->color_buffers[i].wl_buffer &&
 273           !dri2_surf->color_buffers[i].locked)
 274          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 275       if (dri2_surf->color_buffers[i].dri_image)
 276          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 277       if (dri2_surf->color_buffers[i].linear_copy)
 278          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 279       if (dri2_surf->color_buffers[i].data)
 280          munmap(dri2_surf->color_buffers[i].data,
 281                 dri2_surf->color_buffers[i].data_size);
 282
 283       dri2_surf->color_buffers[i].wl_buffer = NULL;
 284       dri2_surf->color_buffers[i].dri_image = NULL;
 285       dri2_surf->color_buffers[i].linear_copy = NULL;
 286       dri2_surf->color_buffers[i].data = NULL;
 287       dri2_surf->color_buffers[i].locked = 0;
 288    }
 289
 290    if (dri2_dpy->dri2) {
 291       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 292          if (dri2_surf->dri_buffers[i] &&
 293              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 294             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 295                                           dri2_surf->dri_buffers[i]);
 296    }
 297 }
 298
 299 static int
 300 get_back_bo(struct dri2_egl_surface *dri2_surf)
 301 {
 302    struct dri2_egl_display *dri2_dpy =
 303       dri2_egl_display(dri2_surf->base.Resource.Display);
 304    int i, use_flags;
 305    unsigned int dri_image_format;
 306
 307    /* currently supports three WL DRM formats,
 308     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 309     * and WL_DRM_FORMAT_RGB565
 310     */
 311    switch (dri2_surf->format) {
 312    case WL_DRM_FORMAT_ARGB8888:
 313       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 314       break;
 315    case WL_DRM_FORMAT_XRGB8888:
 316       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 317       break;
 318    case WL_DRM_FORMAT_RGB565:
 319       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 320       break;
 321    default:
 322       /* format is not supported */
 323       return -1;
 324    }
 325
 326    /* There might be a buffer release already queued that wasn't processed */
 327    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 328
 329    if (dri2_surf->back == NULL) {
 330       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 331          /* Get an unlocked buffer, preferrably one with a dri_buffer
 332           * already allocated. */
 333          if (dri2_surf->color_buffers[i].locked)
 334             continue;
 335          if (dri2_surf->back == NULL)
 336             dri2_surf->back = &dri2_surf->color_buffers[i];
 337          else if (dri2_surf->back->dri_image == NULL)
 338             dri2_surf->back = &dri2_surf->color_buffers[i];
 339       }
 340    }
 341
 342    if (dri2_surf->back == NULL)
 343       return -1;
 344
 345    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 346
 347    if (dri2_dpy->is_different_gpu &&
 348        dri2_surf->back->linear_copy == NULL) {
 349        dri2_surf->back->linear_copy =
 350           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 351                                       dri2_surf->base.Width,
 352                                       dri2_surf->base.Height,
 353                                       dri_image_format,
 354                                       use_flags |
 355                                       __DRI_IMAGE_USE_LINEAR,
 356                                       NULL);
 357       if (dri2_surf->back->linear_copy == NULL)
 358           return -1;
 359    }
 360
 361    if (dri2_surf->back->dri_image == NULL) {
 362       dri2_surf->back->dri_image =
 363          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 364                                       dri2_surf->base.Width,
 365                                       dri2_surf->base.Height,
 366                                       dri_image_format,
 367                                       dri2_dpy->is_different_gpu ?
 368                                          0 : use_flags,
 369                                       NULL);
 370       dri2_surf->back->age = 0;
 371    }
 372    if (dri2_surf->back->dri_image == NULL)
 373       return -1;
 374
 375    dri2_surf->back->locked = 1;
 376
 377    return 0;
 378 }
 379
 380
 381 static void
 382 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 383 {
 384    struct dri2_egl_display *dri2_dpy =
 385       dri2_egl_display(dri2_surf->base.Resource.Display);
 386    __DRIimage *image;
 387    int name, pitch;
 388
 389    image = dri2_surf->back->dri_image;
 390
 391    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 392    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 393
 394    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 395    buffer->name = name;
 396    buffer->pitch = pitch;
 397    buffer->cpp = 4;
 398    buffer->flags = 0;
 399 }
 400
 401 static int
 402 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 403            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 404 {
 405    struct dri2_egl_display *dri2_dpy =
 406       dri2_egl_display(dri2_surf->base.Resource.Display);
 407    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 408
 409    if (b == NULL) {
 410       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 411                                          attachment, format,
 412                                          dri2_surf->base.Width,
 413                                          dri2_surf->base.Height);
 414       dri2_surf->dri_buffers[attachment] = b;
 415    }
 416    if (b == NULL)
 417       return -1;
 418
 419    memcpy(buffer, b, sizeof *buffer);
 420
 421    return 0;
 422 }
 423
 424 static int
 425 update_buffers(struct dri2_egl_surface *dri2_surf)
 426 {
 427    struct dri2_egl_display *dri2_dpy =
 428       dri2_egl_display(dri2_surf->base.Resource.Display);
 429    int i;
 430
 431    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 432        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 433
 434       dri2_wl_release_buffers(dri2_surf);
 435
 436       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 437       dri2_surf->base.Height = dri2_surf->wl_win->height;
 438       dri2_surf->dx = dri2_surf->wl_win->dx;
 439       dri2_surf->dy = dri2_surf->wl_win->dy;
 440    }
 441
 442    if (get_back_bo(dri2_surf) < 0) {
 443       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 444       return -1;
 445    }
 446
 447    /* If we have an extra unlocked buffer at this point, we had to do triple
 448     * buffering for a while, but now can go back to just double buffering.
 449     * That means we can free any unlocked buffer now. */
 450    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 451       if (!dri2_surf->color_buffers[i].locked &&
 452           dri2_surf->color_buffers[i].wl_buffer) {
 453          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 454          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 455          if (dri2_dpy->is_different_gpu)
 456             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 457          dri2_surf->color_buffers[i].wl_buffer = NULL;
 458          dri2_surf->color_buffers[i].dri_image = NULL;
 459          dri2_surf->color_buffers[i].linear_copy = NULL;
 460       }
 461    }
 462
 463    return 0;
 464 }
 465
 466 static __DRIbuffer *
 467 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 468                                 int *width, int *height,
 469                                 unsigned int *attachments, int count,
 470                                 int *out_count, void *loaderPrivate)
 471 {
 472    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 473    int i, j;
 474
 475    if (update_buffers(dri2_surf) < 0)
 476       return NULL;
 477
 478    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 479       switch (attachments[i]) {
 480       case __DRI_BUFFER_BACK_LEFT:
 481          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 482          break;
 483       default:
 484          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 485                         &dri2_surf->buffers[j]) < 0) {
 486             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 487             return NULL;
 488          }
 489          break;
 490       }
 491    }
 492
 493    *out_count = j;
 494    if (j == 0)
 495            return NULL;
 496
 497    *width = dri2_surf->base.Width;
 498    *height = dri2_surf->base.Height;
 499
 500    return dri2_surf->buffers;
 501 }
 502
 503 static __DRIbuffer *
 504 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 505                     int *width, int *height,
 506                     unsigned int *attachments, int count,
 507                     int *out_count, void *loaderPrivate)
 508 {
 509    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 510    unsigned int *attachments_with_format;
 511    __DRIbuffer *buffer;
 512    unsigned int bpp;
 513
 514    int i;
 515
 516    switch (dri2_surf->format) {
 517    case WL_DRM_FORMAT_ARGB8888:
 518    case WL_DRM_FORMAT_XRGB8888:
 519       bpp = 32;
 520       break;
 521    case WL_DRM_FORMAT_RGB565:
 522       bpp = 16;
 523       break;
 524    default:
 525       /* format is not supported */
 526       return NULL;
 527    }
 528
 529    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 530    if (!attachments_with_format) {
 531       *out_count = 0;
 532       return NULL;
 533    }
 534
 535    for (i = 0; i < count; ++i) {
 536       attachments_with_format[2*i] = attachments[i];
 537       attachments_with_format[2*i + 1] = bpp;
 538    }
 539
 540    buffer =
 541       dri2_wl_get_buffers_with_format(driDrawable,
 542                                       width, height,
 543                                       attachments_with_format, count,
 544                                       out_count, loaderPrivate);
 545
 546    free(attachments_with_format);
 547
 548    return buffer;
 549 }
 550
 551 static int
 552 image_get_buffers(__DRIdrawable *driDrawable,
 553                   unsigned int format,
 554                   uint32_t *stamp,
 555                   void *loaderPrivate,
 556                   uint32_t buffer_mask,
 557                   struct __DRIimageList *buffers)
 558 {
 559    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 560
 561    if (update_buffers(dri2_surf) < 0)
 562       return 0;
 563
 564    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 565    buffers->back = dri2_surf->back->dri_image;
 566
 567    return 1;
 568 }
 569
 570 static void
 571 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 572 {
 573    (void) driDrawable;
 574    (void) loaderPrivate;
 575 }
 576
 577 static const __DRIdri2LoaderExtension dri2_loader_extension = {
 578    .base = { __DRI_DRI2_LOADER, 3 },
 579
 580    .getBuffers           = dri2_wl_get_buffers,
 581    .flushFrontBuffer     = dri2_wl_flush_front_buffer,
 582    .getBuffersWithFormat = dri2_wl_get_buffers_with_format,
 583 };
 584
 585 static const __DRIimageLoaderExtension image_loader_extension = {
 586    .base = { __DRI_IMAGE_LOADER, 1 },
 587
 588    .getBuffers          = image_get_buffers,
 589    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 590 };
 591
 592 static void
 593 wayland_throttle_callback(void *data,
 594                           struct wl_callback *callback,
 595                           uint32_t time)
 596 {
 597    struct dri2_egl_surface *dri2_surf = data;
 598
 599    dri2_surf->throttle_callback = NULL;
 600    wl_callback_destroy(callback);
 601 }
 602
 603 static const struct wl_callback_listener throttle_listener = {
 604    .done = wayland_throttle_callback
 605 };
 606
 607 static void
 608 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 609 {
 610    struct dri2_egl_display *dri2_dpy =
 611       dri2_egl_display(dri2_surf->base.Resource.Display);
 612    __DRIimage *image;
 613    int fd, stride, name;
 614
 615    if (dri2_surf->current->wl_buffer != NULL)
 616       return;
 617
 618    if (dri2_dpy->is_different_gpu) {
 619       image = dri2_surf->current->linear_copy;
 620    } else {
 621       image = dri2_surf->current->dri_image;
 622    }
 623    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 624       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 625       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 626
 627       dri2_surf->current->wl_buffer =
 628          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 629                                     fd,
 630                                     dri2_surf->base.Width,
 631                                     dri2_surf->base.Height,
 632                                     dri2_surf->format,
 633                                     0, stride,
 634                                     0, 0,
 635                                     0, 0);
 636       close(fd);
 637    } else {
 638       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 639       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 640
 641       dri2_surf->current->wl_buffer =
 642          wl_drm_create_buffer(dri2_dpy->wl_drm,
 643                               name,
 644                               dri2_surf->base.Width,
 645                               dri2_surf->base.Height,
 646                               stride,
 647                               dri2_surf->format);
 648    }
 649
 650    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 651                       dri2_dpy->wl_queue);
 652    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 653                           &wl_buffer_listener, dri2_surf);
 654 }
 655
 656 static EGLBoolean
 657 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 658                   const EGLint *rects,
 659                   EGLint n_rects)
 660 {
 661 /* The WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION macro and
 662  * wl_proxy_get_version() were both introduced in wayland 1.10.
 663  * Instead of bumping our wayland dependency we just make this
 664  * function conditional on the required 1.10 features, falling
 665  * back to old (correct but suboptimal) behaviour for older
 666  * wayland.
 667  */
 668 #ifdef WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION
 669    int i;
 670
 671    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_win->surface)
 672        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 673       return EGL_FALSE;
 674
 675    for (i = 0; i < n_rects; i++) {
 676       const int *rect = &rects[i * 4];
 677
 678       wl_surface_damage_buffer(dri2_surf->wl_win->surface,
 679                                rect[0],
 680                                dri2_surf->base.Height - rect[1] - rect[3],
 681                                rect[2], rect[3]);
 682    }
 683    return EGL_TRUE;
 684 #endif
 685    return EGL_FALSE;
 686 }
 687 /**
 688  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 689  */
 690 static EGLBoolean
 691 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 692                                  _EGLDisplay *disp,
 693                                  _EGLSurface *draw,
 694                                  const EGLint *rects,
 695                                  EGLint n_rects)
 696 {
 697    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 698    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 699    int i;
 700
 701    while (dri2_surf->throttle_callback != NULL)
 702       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 703                                     dri2_dpy->wl_queue) == -1)
 704          return -1;
 705
 706    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 707       if (dri2_surf->color_buffers[i].age > 0)
 708          dri2_surf->color_buffers[i].age++;
 709
 710    /* Make sure we have a back buffer in case we're swapping without ever
 711     * rendering. */
 712    if (get_back_bo(dri2_surf) < 0) {
 713       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 714       return EGL_FALSE;
 715    }
 716
 717    if (draw->SwapInterval > 0) {
 718       dri2_surf->throttle_callback =
 719          wl_surface_frame(dri2_surf->wl_win->surface);
 720       wl_callback_add_listener(dri2_surf->throttle_callback,
 721                                &throttle_listener, dri2_surf);
 722       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 723                          dri2_dpy->wl_queue);
 724    }
 725
 726    dri2_surf->back->age = 1;
 727    dri2_surf->current = dri2_surf->back;
 728    dri2_surf->back = NULL;
 729
 730    create_wl_buffer(dri2_surf);
 731
 732    wl_surface_attach(dri2_surf->wl_win->surface,
 733                      dri2_surf->current->wl_buffer,
 734                      dri2_surf->dx, dri2_surf->dy);
 735
 736    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 737    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 738    /* reset resize growing parameters */
 739    dri2_surf->dx = 0;
 740    dri2_surf->dy = 0;
 741
 742    /* If the compositor doesn't support damage_buffer, we deliberately
 743     * ignore the damage region and post maximum damage, due to
 744     * https://bugs.freedesktop.org/78190 */
 745    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 746       wl_surface_damage(dri2_surf->wl_win->surface,
 747                         0, 0, INT32_MAX, INT32_MAX);
 748
 749    if (dri2_dpy->is_different_gpu) {
 750       _EGLContext *ctx = _eglGetCurrentContext();
 751       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 752       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 753                                  dri2_surf->current->linear_copy,
 754                                  dri2_surf->current->dri_image,
 755                                  0, 0, dri2_surf->base.Width,
 756                                  dri2_surf->base.Height,
 757                                  0, 0, dri2_surf->base.Width,
 758                                  dri2_surf->base.Height, 0);
 759    }
 760
 761    dri2_flush_drawable_for_swapbuffers(disp, draw);
 762    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 763
 764    wl_surface_commit(dri2_surf->wl_win->surface);
 765
 766    /* If we're not waiting for a frame callback then we'll at least throttle
 767     * to a sync callback so that we always give a chance for the compositor to
 768     * handle the commit and send a release event before checking for a free
 769     * buffer */
 770    if (dri2_surf->throttle_callback == NULL) {
 771       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy_wrapper);
 772       wl_callback_add_listener(dri2_surf->throttle_callback,
 773                                &throttle_listener, dri2_surf);
 774    }
 775
 776    wl_display_flush(dri2_dpy->wl_dpy);
 777
 778    return EGL_TRUE;
 779 }
 780
 781 static EGLint
 782 dri2_wl_query_buffer_age(_EGLDriver *drv,
 783                          _EGLDisplay *disp, _EGLSurface *surface)
 784 {
 785    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 786
 787    if (get_back_bo(dri2_surf) < 0) {
 788       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 789       return 0;
 790    }
 791
 792    return dri2_surf->back->age;
 793 }
 794
 795 static EGLBoolean
 796 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 797 {
 798    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 799 }
 800
 801 static struct wl_buffer *
 802 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 803                                           _EGLDisplay *disp,
 804                                           _EGLImage *img)
 805 {
 806    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 807    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 808    __DRIimage *image = dri2_img->dri_image;
 809    struct wl_buffer *buffer;
 810    int width, height, format, pitch;
 811    enum wl_drm_format wl_format;
 812
 813    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 814
 815    switch (format) {
 816    case __DRI_IMAGE_FORMAT_ARGB8888:
 817       if (!(dri2_dpy->formats & HAS_ARGB8888))
 818          goto bad_format;
 819       wl_format = WL_DRM_FORMAT_ARGB8888;
 820       break;
 821    case __DRI_IMAGE_FORMAT_XRGB8888:
 822       if (!(dri2_dpy->formats & HAS_XRGB8888))
 823          goto bad_format;
 824       wl_format = WL_DRM_FORMAT_XRGB8888;
 825       break;
 826    default:
 827       goto bad_format;
 828    }
 829
 830    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 831    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 832    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 833
 834    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 835       int fd;
 836
 837       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 838
 839       buffer =
 840          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 841                                     fd,
 842                                     width, height,
 843                                     wl_format,
 844                                     0, pitch,
 845                                     0, 0,
 846                                     0, 0);
 847
 848       close(fd);
 849    } else {
 850       int name;
 851
 852       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 853
 854       buffer =
 855          wl_drm_create_buffer(dri2_dpy->wl_drm,
 856                               name,
 857                               width, height,
 858                               pitch,
 859                               wl_format);
 860    }
 861
 862    /* The buffer object will have been created with our internal event queue
 863     * because it is using the wl_drm object as a proxy factory. We want the
 864     * buffer to be used by the application so we'll reset it to the display's
 865     * default event queue */
 866    if (buffer)
 867       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 868
 869    return buffer;
 870
 871 bad_format:
 872    _eglError(EGL_BAD_MATCH, "unsupported image format");
 873    return NULL;
 874 }
 875
 876 static int
 877 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 878 {
 879    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 880    int ret = 0;
 881
 882    if (dri2_dpy->is_render_node) {
 883       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 884                             "authenticate for render-nodes");
 885       return 0;
 886    }
 887    dri2_dpy->authenticated = 0;
 888
 889    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 890    if (roundtrip(dri2_dpy) < 0)
 891       ret = -1;
 892
 893    if (!dri2_dpy->authenticated)
 894       ret = -1;
 895
 896    /* reset authenticated */
 897    dri2_dpy->authenticated = 1;
 898
 899    return ret;
 900 }
 901
 902 static void
 903 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 904 {
 905    struct dri2_egl_display *dri2_dpy = data;
 906    drm_magic_t magic;
 907
 908    dri2_dpy->device_name = strdup(device);
 909    if (!dri2_dpy->device_name)
 910       return;
 911
 912    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 913    if (dri2_dpy->fd == -1) {
 914       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 915               dri2_dpy->device_name, strerror(errno));
 916       return;
 917    }
 918
 919    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 920       dri2_dpy->authenticated = 1;
 921    } else {
 922       drmGetMagic(dri2_dpy->fd, &magic);
 923       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 924    }
 925 }
 926
 927 static void
 928 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 929 {
 930    struct dri2_egl_display *dri2_dpy = data;
 931
 932    switch (format) {
 933    case WL_DRM_FORMAT_ARGB8888:
 934       dri2_dpy->formats |= HAS_ARGB8888;
 935       break;
 936    case WL_DRM_FORMAT_XRGB8888:
 937       dri2_dpy->formats |= HAS_XRGB8888;
 938       break;
 939    case WL_DRM_FORMAT_RGB565:
 940       dri2_dpy->formats |= HAS_RGB565;
 941       break;
 942    }
 943 }
 944
 945 static void
 946 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 947 {
 948    struct dri2_egl_display *dri2_dpy = data;
 949
 950    dri2_dpy->capabilities = value;
 951 }
 952
 953 static void
 954 drm_handle_authenticated(void *data, struct wl_drm *drm)
 955 {
 956    struct dri2_egl_display *dri2_dpy = data;
 957
 958    dri2_dpy->authenticated = 1;
 959 }
 960
 961 static const struct wl_drm_listener drm_listener = {
 962    .device = drm_handle_device,
 963    .format = drm_handle_format,
 964    .authenticated = drm_handle_authenticated,
 965    .capabilities = drm_handle_capabilities
 966 };
 967
 968 static void
 969 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 970                        const char *interface, uint32_t version)
 971 {
 972    struct dri2_egl_display *dri2_dpy = data;
 973
 974    if (version > 1)
 975       version = 2;
 976    if (strcmp(interface, "wl_drm") == 0) {
 977       dri2_dpy->wl_drm =
 978          wl_registry_bind(registry, name, &wl_drm_interface, version);
 979       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 980    }
 981 }
 982
 983 static void
 984 registry_handle_global_remove(void *data, struct wl_registry *registry,
 985                               uint32_t name)
 986 {
 987 }
 988
 989 static const struct wl_registry_listener registry_listener_drm = {
 990    .global = registry_handle_global_drm,
 991    .global_remove = registry_handle_global_remove
 992 };
 993
 994 static EGLBoolean
 995 dri2_wl_swap_interval(_EGLDriver *drv,
 996                    _EGLDisplay *disp,
 997                    _EGLSurface *surf,
 998                    EGLint interval)
 999 {
1000    if (interval > surf->Config->MaxSwapInterval)
1001       interval = surf->Config->MaxSwapInterval;
1002    else if (interval < surf->Config->MinSwapInterval)
1003       interval = surf->Config->MinSwapInterval;
1004
1005    surf->SwapInterval = interval;
1006
1007    return EGL_TRUE;
1008 }
1009
1010 static void
1011 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1012 {
1013    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1014
1015    /* We can't use values greater than 1 on Wayland because we are using the
1016     * frame callback to synchronise the frame and the only way we be sure to
1017     * get a frame callback is to attach a new buffer. Therefore we can't just
1018     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1019
1020    if (dri2_dpy->config)
1021       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1022                                      "vblank_mode", &vblank_mode);
1023    switch (vblank_mode) {
1024    case DRI_CONF_VBLANK_NEVER:
1025       dri2_dpy->min_swap_interval = 0;
1026       dri2_dpy->max_swap_interval = 0;
1027       dri2_dpy->default_swap_interval = 0;
1028       break;
1029    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1030       dri2_dpy->min_swap_interval = 1;
1031       dri2_dpy->max_swap_interval = 1;
1032       dri2_dpy->default_swap_interval = 1;
1033       break;
1034    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1035       dri2_dpy->min_swap_interval = 0;
1036       dri2_dpy->max_swap_interval = 1;
1037       dri2_dpy->default_swap_interval = 0;
1038       break;
1039    default:
1040    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1041       dri2_dpy->min_swap_interval = 0;
1042       dri2_dpy->max_swap_interval = 1;
1043       dri2_dpy->default_swap_interval = 1;
1044       break;
1045    }
1046 }
1047
1048 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1049    .authenticate = dri2_wl_authenticate,
1050    .create_window_surface = dri2_wl_create_window_surface,
1051    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1052    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1053    .destroy_surface = dri2_wl_destroy_surface,
1054    .create_image = dri2_create_image_khr,
1055    .swap_interval = dri2_wl_swap_interval,
1056    .swap_buffers = dri2_wl_swap_buffers,
1057    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1058    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1059    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1060    .copy_buffers = dri2_fallback_copy_buffers,
1061    .query_buffer_age = dri2_wl_query_buffer_age,
1062    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1063    .get_sync_values = dri2_fallback_get_sync_values,
1064    .get_dri_drawable = dri2_surface_get_dri_drawable,
1065 };
1066
1067 static const __DRIextension *dri2_loader_extensions[] = {
1068    &dri2_loader_extension.base,
1069    &image_loader_extension.base,
1070    &image_lookup_extension.base,
1071    &use_invalidate.base,
1072    NULL,
1073 };
1074
1075 static const __DRIextension *image_loader_extensions[] = {
1076    &image_loader_extension.base,
1077    &image_lookup_extension.base,
1078    &use_invalidate.base,
1079    NULL,
1080 };
1081
1082 static EGLBoolean
1083 dri2_wl_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
1084 {
1085    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1086    static const struct {
1087       const char *format_name;
1088       int has_format;
1089       unsigned int rgba_masks[4];
1090    } visuals[] = {
1091       { "XRGB8888", HAS_XRGB8888, { 0xff0000, 0xff00, 0x00ff, 0xff000000 } },
1092       { "ARGB8888", HAS_ARGB8888, { 0xff0000, 0xff00, 0x00ff, 0 } },
1093       { "RGB565",   HAS_RGB565,   { 0x00f800, 0x07e0, 0x001f, 0 } },
1094    };
1095    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
1096    unsigned int count, i, j;
1097
1098    count = 0;
1099    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1100       for (j = 0; j < ARRAY_SIZE(visuals); j++) {
1101          struct dri2_egl_config *dri2_conf;
1102
1103          if (!(dri2_dpy->formats & visuals[j].has_format))
1104             continue;
1105
1106          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
1107                count + 1, EGL_WINDOW_BIT, NULL, visuals[j].rgba_masks);
1108          if (dri2_conf) {
1109             count++;
1110             format_count[j]++;
1111          }
1112       }
1113    }
1114
1115    for (i = 0; i < ARRAY_SIZE(format_count); i++) {
1116       if (!format_count[i]) {
1117          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
1118                  visuals[i].format_name);
1119       }
1120    }
1121
1122    return (count != 0);
1123 }
1124
1125 static EGLBoolean
1126 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1127 {
1128    struct dri2_egl_display *dri2_dpy;
1129
1130    loader_set_logger(_eglLog);
1131
1132    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1133    if (!dri2_dpy)
1134       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1135
1136    disp->DriverData = (void *) dri2_dpy;
1137    if (disp->PlatformDisplay == NULL) {
1138       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1139       if (dri2_dpy->wl_dpy == NULL)
1140          goto cleanup_dpy;
1141       dri2_dpy->own_device = 1;
1142    } else {
1143       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1144    }
1145
1146    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1147
1148    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1149    if (dri2_dpy->wl_dpy_wrapper == NULL)
1150       goto cleanup_dpy_wrapper;
1151
1152    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1153                       dri2_dpy->wl_queue);
1154
1155    if (dri2_dpy->own_device)
1156       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1157
1158    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1159    wl_registry_add_listener(dri2_dpy->wl_registry,
1160                             &registry_listener_drm, dri2_dpy);
1161    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1162       goto cleanup_registry;
1163
1164    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1165       goto cleanup_drm;
1166
1167    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1168       goto cleanup_fd;
1169
1170    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1171                                                &dri2_dpy->is_different_gpu);
1172    if (dri2_dpy->is_different_gpu) {
1173       free(dri2_dpy->device_name);
1174       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1175       if (!dri2_dpy->device_name) {
1176          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1177                                   "for requested GPU");
1178          goto cleanup_fd;
1179       }
1180    }
1181
1182    /* we have to do the check now, because loader_get_user_preferred_fd
1183     * will return a render-node when the requested gpu is different
1184     * to the server, but also if the client asks for the same gpu than
1185     * the server by requesting its pci-id */
1186    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1187
1188    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
1189    if (dri2_dpy->driver_name == NULL) {
1190       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1191       goto cleanup_fd;
1192    }
1193
1194    if (!dri2_load_driver(disp))
1195       goto cleanup_driver_name;
1196
1197    /* render nodes cannot use Gem names, and thus do not support
1198     * the __DRI_DRI2_LOADER extension */
1199    if (!dri2_dpy->is_render_node)
1200       dri2_dpy->loader_extensions = dri2_loader_extensions;
1201    else
1202       dri2_dpy->loader_extensions = image_loader_extensions;
1203
1204    if (!dri2_create_screen(disp))
1205       goto cleanup_driver;
1206
1207    dri2_wl_setup_swap_interval(dri2_dpy);
1208
1209    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1210     * createImageFromFds support indicates that Prime export/import
1211     * is supported by the driver. Fall back to
1212     * gem names if we don't have Prime support. */
1213
1214    if (dri2_dpy->image->base.version < 7 ||
1215        dri2_dpy->image->createImageFromFds == NULL)
1216       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1217
1218    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1219     * The server needs to accept them */
1220    if (dri2_dpy->is_render_node &&
1221        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1222       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1223       goto cleanup_screen;
1224    }
1225
1226    if (dri2_dpy->is_different_gpu &&
1227        (dri2_dpy->image->base.version < 9 ||
1228         dri2_dpy->image->blitImage == NULL)) {
1229       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1230                             "Image extension in the driver is not "
1231                             "compatible. Version 9 or later and blitImage() "
1232                             "are required");
1233       goto cleanup_screen;
1234    }
1235
1236    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1237       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1238       goto cleanup_screen;
1239    }
1240
1241    dri2_set_WL_bind_wayland_display(drv, disp);
1242    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1243     * because the buffer of the EGLImage has likely a tiling mode the server
1244     * gpu won't support. These is no way to check for now. Thus do not support the
1245     * extension */
1246    if (!dri2_dpy->is_different_gpu) {
1247       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1248    } else {
1249       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1250          dri2_fallback_create_wayland_buffer_from_image;
1251    }
1252    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1253
1254    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1255
1256    /* Fill vtbl last to prevent accidentally calling virtual function during
1257     * initialization.
1258     */
1259    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1260
1261    return EGL_TRUE;
1262
1263  cleanup_screen:
1264    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1265  cleanup_driver:
1266    dlclose(dri2_dpy->driver);
1267  cleanup_driver_name:
1268    free(dri2_dpy->driver_name);
1269  cleanup_fd:
1270    close(dri2_dpy->fd);
1271  cleanup_drm:
1272    free(dri2_dpy->device_name);
1273    wl_drm_destroy(dri2_dpy->wl_drm);
1274  cleanup_registry:
1275    wl_registry_destroy(dri2_dpy->wl_registry);
1276    wl_proxy_wrapper_destroy(dri2_dpy->wl_dpy_wrapper);
1277  cleanup_dpy_wrapper:
1278    wl_event_queue_destroy(dri2_dpy->wl_queue);
1279    if (disp->PlatformDisplay == NULL)
1280       wl_display_disconnect(dri2_dpy->wl_dpy);
1281  cleanup_dpy:
1282    free(dri2_dpy);
1283    disp->DriverData = NULL;
1284
1285    return EGL_FALSE;
1286 }
1287
1288 static int
1289 dri2_wl_swrast_get_stride_for_format(int format, int w)
1290 {
1291    if (format == WL_SHM_FORMAT_RGB565)
1292       return 2 * w;
1293    else /* ARGB8888 || XRGB8888 */
1294       return 4 * w;
1295 }
1296
1297 /*
1298  * Taken from weston shared/os-compatibility.c
1299  */
1300
1301 #ifndef HAVE_MKOSTEMP
1302
1303 static int
1304 set_cloexec_or_close(int fd)
1305 {
1306    long flags;
1307
1308    if (fd == -1)
1309       return -1;
1310
1311    flags = fcntl(fd, F_GETFD);
1312    if (flags == -1)
1313       goto err;
1314
1315    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1316       goto err;
1317
1318    return fd;
1319
1320 err:
1321    close(fd);
1322    return -1;
1323 }
1324
1325 #endif
1326
1327 /*
1328  * Taken from weston shared/os-compatibility.c
1329  */
1330
1331 static int
1332 create_tmpfile_cloexec(char *tmpname)
1333 {
1334    int fd;
1335
1336 #ifdef HAVE_MKOSTEMP
1337    fd = mkostemp(tmpname, O_CLOEXEC);
1338    if (fd >= 0)
1339       unlink(tmpname);
1340 #else
1341    fd = mkstemp(tmpname);
1342    if (fd >= 0) {
1343       fd = set_cloexec_or_close(fd);
1344       unlink(tmpname);
1345    }
1346 #endif
1347
1348    return fd;
1349 }
1350
1351 /*
1352  * Taken from weston shared/os-compatibility.c
1353  *
1354  * Create a new, unique, anonymous file of the given size, and
1355  * return the file descriptor for it. The file descriptor is set
1356  * CLOEXEC. The file is immediately suitable for mmap()'ing
1357  * the given size at offset zero.
1358  *
1359  * The file should not have a permanent backing store like a disk,
1360  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1361  *
1362  * The file name is deleted from the file system.
1363  *
1364  * The file is suitable for buffer sharing between processes by
1365  * transmitting the file descriptor over Unix sockets using the
1366  * SCM_RIGHTS methods.
1367  *
1368  * If the C library implements posix_fallocate(), it is used to
1369  * guarantee that disk space is available for the file at the
1370  * given size. If disk space is insufficent, errno is set to ENOSPC.
1371  * If posix_fallocate() is not supported, program may receive
1372  * SIGBUS on accessing mmap()'ed file contents instead.
1373  */
1374 static int
1375 os_create_anonymous_file(off_t size)
1376 {
1377    static const char template[] = "/mesa-shared-XXXXXX";
1378    const char *path;
1379    char *name;
1380    int fd;
1381    int ret;
1382
1383    path = getenv("XDG_RUNTIME_DIR");
1384    if (!path) {
1385       errno = ENOENT;
1386       return -1;
1387    }
1388
1389    name = malloc(strlen(path) + sizeof(template));
1390    if (!name)
1391       return -1;
1392
1393    strcpy(name, path);
1394    strcat(name, template);
1395
1396    fd = create_tmpfile_cloexec(name);
1397
1398    free(name);
1399
1400    if (fd < 0)
1401       return -1;
1402
1403    ret = ftruncate(fd, size);
1404    if (ret < 0) {
1405       close(fd);
1406       return -1;
1407    }
1408
1409    return fd;
1410 }
1411
1412
1413 static EGLBoolean
1414 dri2_wl_swrast_allocate_buffer(struct dri2_egl_display *dri2_dpy,
1415                                int format, int w, int h,
1416                                void **data, int *size,
1417                                struct wl_buffer **buffer)
1418 {
1419    struct wl_shm_pool *pool;
1420    int fd, stride, size_map;
1421    void *data_map;
1422
1423    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1424    size_map = h * stride;
1425
1426    /* Create a sharable buffer */
1427    fd = os_create_anonymous_file(size_map);
1428    if (fd < 0)
1429       return EGL_FALSE;
1430
1431    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1432    if (data_map == MAP_FAILED) {
1433       close(fd);
1434       return EGL_FALSE;
1435    }
1436
1437    /* Share it in a wl_buffer */
1438    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1439    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1440    wl_shm_pool_destroy(pool);
1441    close(fd);
1442
1443    *data = data_map;
1444    *size = size_map;
1445    return EGL_TRUE;
1446 }
1447
1448 static int
1449 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1450 {
1451    struct dri2_egl_display *dri2_dpy =
1452       dri2_egl_display(dri2_surf->base.Resource.Display);
1453    int i;
1454
1455    /* we need to do the following operations only once per frame */
1456    if (dri2_surf->back)
1457       return 0;
1458
1459    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1460        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1461
1462       dri2_wl_release_buffers(dri2_surf);
1463
1464       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1465       dri2_surf->base.Height = dri2_surf->wl_win->height;
1466       dri2_surf->dx = dri2_surf->wl_win->dx;
1467       dri2_surf->dy = dri2_surf->wl_win->dy;
1468       dri2_surf->current = NULL;
1469    }
1470
1471    /* find back buffer */
1472
1473    /* There might be a buffer release already queued that wasn't processed */
1474    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
1475
1476    /* try get free buffer already created */
1477    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1478       if (!dri2_surf->color_buffers[i].locked &&
1479           dri2_surf->color_buffers[i].wl_buffer) {
1480           dri2_surf->back = &dri2_surf->color_buffers[i];
1481           break;
1482       }
1483    }
1484
1485    /* else choose any another free location */
1486    if (!dri2_surf->back) {
1487       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1488          if (!dri2_surf->color_buffers[i].locked) {
1489              dri2_surf->back = &dri2_surf->color_buffers[i];
1490              if (!dri2_wl_swrast_allocate_buffer(dri2_dpy,
1491                                                  dri2_surf->format,
1492                                                  dri2_surf->base.Width,
1493                                                  dri2_surf->base.Height,
1494                                                  &dri2_surf->back->data,
1495                                                  &dri2_surf->back->data_size,
1496                                                  &dri2_surf->back->wl_buffer)) {
1497                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1498                  return -1;
1499              }
1500              wl_proxy_set_queue((struct wl_proxy *) dri2_surf->back->wl_buffer,
1501                                 dri2_dpy->wl_queue);
1502              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1503                                     &wl_buffer_listener, dri2_surf);
1504              break;
1505          }
1506       }
1507    }
1508
1509    if (!dri2_surf->back) {
1510       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1511       return -1;
1512    }
1513
1514    dri2_surf->back->locked = 1;
1515
1516    /* If we have an extra unlocked buffer at this point, we had to do triple
1517     * buffering for a while, but now can go back to just double buffering.
1518     * That means we can free any unlocked buffer now. */
1519    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1520       if (!dri2_surf->color_buffers[i].locked &&
1521           dri2_surf->color_buffers[i].wl_buffer) {
1522          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1523          munmap(dri2_surf->color_buffers[i].data,
1524                 dri2_surf->color_buffers[i].data_size);
1525          dri2_surf->color_buffers[i].wl_buffer = NULL;
1526          dri2_surf->color_buffers[i].data = NULL;
1527       }
1528    }
1529
1530    return 0;
1531 }
1532
1533 static void*
1534 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1535 {
1536    /* if there has been a resize: */
1537    if (!dri2_surf->current)
1538       return NULL;
1539
1540    return dri2_surf->current->data;
1541 }
1542
1543 static void*
1544 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1545 {
1546    assert(dri2_surf->back);
1547    return dri2_surf->back->data;
1548 }
1549
1550 static void
1551 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1552 {
1553    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1554
1555    while (dri2_surf->throttle_callback != NULL)
1556       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1557                                     dri2_dpy->wl_queue) == -1)
1558          return;
1559
1560    if (dri2_surf->base.SwapInterval > 0) {
1561       dri2_surf->throttle_callback =
1562          wl_surface_frame(dri2_surf->wl_win->surface);
1563       wl_callback_add_listener(dri2_surf->throttle_callback,
1564                                &throttle_listener, dri2_surf);
1565       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1566                          dri2_dpy->wl_queue);
1567    }
1568
1569    dri2_surf->current = dri2_surf->back;
1570    dri2_surf->back = NULL;
1571
1572    wl_surface_attach(dri2_surf->wl_win->surface,
1573                      dri2_surf->current->wl_buffer,
1574                      dri2_surf->dx, dri2_surf->dy);
1575
1576    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1577    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1578    /* reset resize growing parameters */
1579    dri2_surf->dx = 0;
1580    dri2_surf->dy = 0;
1581
1582    wl_surface_damage(dri2_surf->wl_win->surface,
1583                      0, 0, INT32_MAX, INT32_MAX);
1584    wl_surface_commit(dri2_surf->wl_win->surface);
1585
1586    /* If we're not waiting for a frame callback then we'll at least throttle
1587     * to a sync callback so that we always give a chance for the compositor to
1588     * handle the commit and send a release event before checking for a free
1589     * buffer */
1590    if (dri2_surf->throttle_callback == NULL) {
1591       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy_wrapper);
1592       wl_callback_add_listener(dri2_surf->throttle_callback,
1593                                &throttle_listener, dri2_surf);
1594    }
1595
1596    wl_display_flush(dri2_dpy->wl_dpy);
1597 }
1598
1599 static void
1600 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1601                                  int *x, int *y, int *w, int *h,
1602                                  void *loaderPrivate)
1603 {
1604    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1605
1606    (void) swrast_update_buffers(dri2_surf);
1607    *x = 0;
1608    *y = 0;
1609    *w = dri2_surf->base.Width;
1610    *h = dri2_surf->base.Height;
1611 }
1612
1613 static void
1614 dri2_wl_swrast_get_image(__DRIdrawable * read,
1615                          int x, int y, int w, int h,
1616                          char *data, void *loaderPrivate)
1617 {
1618    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1619    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1620    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1621    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1622    int dst_stride = copy_width;
1623    char *src, *dst;
1624
1625    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1626    if (!src) {
1627       memset(data, 0, copy_width * h);
1628       return;
1629    }
1630
1631    assert(data != src);
1632    assert(copy_width <= src_stride);
1633
1634    src += x_offset;
1635    src += y * src_stride;
1636    dst = data;
1637
1638    if (copy_width > src_stride-x_offset)
1639       copy_width = src_stride-x_offset;
1640    if (h > dri2_surf->base.Height-y)
1641       h = dri2_surf->base.Height-y;
1642
1643    for (; h>0; h--) {
1644       memcpy(dst, src, copy_width);
1645       src += src_stride;
1646       dst += dst_stride;
1647    }
1648 }
1649
1650 static void
1651 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1652                          int x, int y, int w, int h, int stride,
1653                          char *data, void *loaderPrivate)
1654 {
1655    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1656    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1657    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1658    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1659    char *src, *dst;
1660
1661    assert(copy_width <= stride);
1662
1663    (void) swrast_update_buffers(dri2_surf);
1664    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1665
1666    /* partial copy, copy old content */
1667    if (copy_width < dst_stride)
1668       dri2_wl_swrast_get_image(draw, 0, 0,
1669                                dri2_surf->base.Width, dri2_surf->base.Height,
1670                                dst, loaderPrivate);
1671
1672    dst += x_offset;
1673    dst += y * dst_stride;
1674
1675    src = data;
1676
1677    /* drivers expect we do these checks (and some rely on it) */
1678    if (copy_width > dst_stride-x_offset)
1679       copy_width = dst_stride-x_offset;
1680    if (h > dri2_surf->base.Height-y)
1681       h = dri2_surf->base.Height-y;
1682
1683    for (; h>0; h--) {
1684       memcpy(dst, src, copy_width);
1685       src += stride;
1686       dst += dst_stride;
1687    }
1688    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1689 }
1690
1691 static void
1692 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1693                          int x, int y, int w, int h,
1694                          char *data, void *loaderPrivate)
1695 {
1696    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1697    int stride;
1698
1699    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1700    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1701                              stride, data, loaderPrivate);
1702 }
1703
1704 static EGLBoolean
1705 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1706 {
1707    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1708    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1709
1710    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1711    return EGL_TRUE;
1712 }
1713
1714 static void
1715 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1716 {
1717    struct dri2_egl_display *dri2_dpy = data;
1718
1719    switch (format) {
1720    case WL_SHM_FORMAT_ARGB8888:
1721       dri2_dpy->formats |= HAS_ARGB8888;
1722       break;
1723    case WL_SHM_FORMAT_XRGB8888:
1724       dri2_dpy->formats |= HAS_XRGB8888;
1725       break;
1726    case WL_SHM_FORMAT_RGB565:
1727       dri2_dpy->formats |= HAS_RGB565;
1728       break;
1729    }
1730 }
1731
1732 static const struct wl_shm_listener shm_listener = {
1733    .format = shm_handle_format
1734 };
1735
1736 static void
1737 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1738                               const char *interface, uint32_t version)
1739 {
1740    struct dri2_egl_display *dri2_dpy = data;
1741
1742    if (strcmp(interface, "wl_shm") == 0) {
1743       dri2_dpy->wl_shm =
1744          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1745       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1746    }
1747 }
1748
1749 static const struct wl_registry_listener registry_listener_swrast = {
1750    .global = registry_handle_global_swrast,
1751    .global_remove = registry_handle_global_remove
1752 };
1753
1754 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1755    .authenticate = NULL,
1756    .create_window_surface = dri2_wl_create_window_surface,
1757    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1758    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1759    .destroy_surface = dri2_wl_destroy_surface,
1760    .create_image = dri2_fallback_create_image_khr,
1761    .swap_interval = dri2_wl_swap_interval,
1762    .swap_buffers = dri2_wl_swrast_swap_buffers,
1763    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1764    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1765    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1766    .copy_buffers = dri2_fallback_copy_buffers,
1767    .query_buffer_age = dri2_fallback_query_buffer_age,
1768    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1769    .get_sync_values = dri2_fallback_get_sync_values,
1770    .get_dri_drawable = dri2_surface_get_dri_drawable,
1771 };
1772
1773 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1774    .base = { __DRI_SWRAST_LOADER, 2 },
1775
1776    .getDrawableInfo = dri2_wl_swrast_get_drawable_info,
1777    .putImage        = dri2_wl_swrast_put_image,
1778    .getImage        = dri2_wl_swrast_get_image,
1779    .putImage2       = dri2_wl_swrast_put_image2,
1780 };
1781
1782 static const __DRIextension *swrast_loader_extensions[] = {
1783    &swrast_loader_extension.base,
1784    NULL,
1785 };
1786
1787 static EGLBoolean
1788 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1789 {
1790    struct dri2_egl_display *dri2_dpy;
1791
1792    loader_set_logger(_eglLog);
1793
1794    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1795    if (!dri2_dpy)
1796       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1797
1798    disp->DriverData = (void *) dri2_dpy;
1799    if (disp->PlatformDisplay == NULL) {
1800       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1801       if (dri2_dpy->wl_dpy == NULL)
1802          goto cleanup_dpy;
1803       dri2_dpy->own_device = 1;
1804    } else {
1805       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1806    }
1807
1808    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1809
1810    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1811    if (dri2_dpy->wl_dpy_wrapper == NULL)
1812       goto cleanup_dpy_wrapper;
1813
1814    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1815                       dri2_dpy->wl_queue);
1816
1817    if (dri2_dpy->own_device)
1818       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1819
1820    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1821    wl_registry_add_listener(dri2_dpy->wl_registry,
1822                             &registry_listener_swrast, dri2_dpy);
1823
1824    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1825       goto cleanup_registry;
1826
1827    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1828       goto cleanup_shm;
1829
1830    dri2_dpy->fd = -1;
1831    dri2_dpy->driver_name = strdup("swrast");
1832    if (!dri2_load_driver_swrast(disp))
1833       goto cleanup_shm;
1834
1835    dri2_dpy->loader_extensions = swrast_loader_extensions;
1836
1837    if (!dri2_create_screen(disp))
1838       goto cleanup_driver;
1839
1840    dri2_wl_setup_swap_interval(dri2_dpy);
1841
1842    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1843       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1844       goto cleanup_screen;
1845    }
1846
1847    /* Fill vtbl last to prevent accidentally calling virtual function during
1848     * initialization.
1849     */
1850    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1851
1852    return EGL_TRUE;
1853
1854  cleanup_screen:
1855    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1856  cleanup_driver:
1857    dlclose(dri2_dpy->driver);
1858  cleanup_shm:
1859    wl_shm_destroy(dri2_dpy->wl_shm);
1860  cleanup_registry:
1861    wl_registry_destroy(dri2_dpy->wl_registry);
1862    wl_proxy_wrapper_destroy(dri2_dpy->wl_dpy_wrapper);
1863  cleanup_dpy_wrapper:
1864    wl_event_queue_destroy(dri2_dpy->wl_queue);
1865    if (disp->PlatformDisplay == NULL)
1866       wl_display_disconnect(dri2_dpy->wl_dpy);
1867  cleanup_dpy:
1868    free(dri2_dpy);
1869    disp->DriverData = NULL;
1870
1871    return EGL_FALSE;
1872 }
1873
1874 EGLBoolean
1875 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1876 {
1877    EGLBoolean initialized = EGL_TRUE;
1878
1879    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1880
1881    if (hw_accel) {
1882       if (!dri2_initialize_wayland_drm(drv, disp)) {
1883          initialized = dri2_initialize_wayland_swrast(drv, disp);
1884       }
1885    } else {
1886       initialized = dri2_initialize_wayland_swrast(drv, disp);
1887    }
1888
1889    return initialized;
1890
1891 }