src/egl/drivers/dri2/platform_wayland.c

   1 /*
   2  * Copyright © 2011-2012 Intel Corporation
   3  * Copyright © 2012 Collabora, Ltd.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  20  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Kristian Høgsberg <krh@bitplanet.net>
  27  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  28  */
  29
  30 #include <stdint.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <limits.h>
  34 #include <dlfcn.h>
  35 #include <errno.h>
  36 #include <unistd.h>
  37 #include <fcntl.h>
  38 #include <xf86drm.h>
  39 #include <sys/mman.h>
  40
  41 #include "egl_dri2.h"
  42 #include "egl_dri2_fallbacks.h"
  43 #include "loader.h"
  44
  45 #include <wayland-client.h>
  46 #include "wayland-drm-client-protocol.h"
  47
  48 enum wl_drm_format_flags {
  49    HAS_ARGB8888 = 1,
  50    HAS_XRGB8888 = 2,
  51    HAS_RGB565 = 4,
  52 };
  53
  54 static EGLBoolean
  55 dri2_wl_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  56                       EGLint interval);
  57
  58 static void
  59 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  60 {
  61    int *done = data;
  62
  63    *done = 1;
  64    wl_callback_destroy(callback);
  65 }
  66
  67 static const struct wl_callback_listener sync_listener = {
  68    .done = sync_callback
  69 };
  70
  71 static int
  72 roundtrip(struct dri2_egl_display *dri2_dpy)
  73 {
  74    struct wl_callback *callback;
  75    int done = 0, ret = 0;
  76
  77    callback = wl_display_sync(dri2_dpy->wl_dpy);
  78    wl_callback_add_listener(callback, &sync_listener, &done);
  79    wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
  80    while (ret != -1 && !done)
  81       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  82
  83    if (!done)
  84       wl_callback_destroy(callback);
  85
  86    return ret;
  87 }
  88
  89 static void
  90 wl_buffer_release(void *data, struct wl_buffer *buffer)
  91 {
  92    struct dri2_egl_surface *dri2_surf = data;
  93    int i;
  94
  95    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  96       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  97          break;
  98
  99    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
 100       wl_buffer_destroy(buffer);
 101       return;
 102    }
 103
 104    dri2_surf->color_buffers[i].locked = 0;
 105 }
 106
 107 static const struct wl_buffer_listener wl_buffer_listener = {
 108    .release = wl_buffer_release
 109 };
 110
 111 static void
 112 resize_callback(struct wl_egl_window *wl_win, void *data)
 113 {
 114    struct dri2_egl_surface *dri2_surf = data;
 115    struct dri2_egl_display *dri2_dpy =
 116       dri2_egl_display(dri2_surf->base.Resource.Display);
 117
 118    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 119 }
 120
 121 static void
 122 destroy_window_callback(void *data)
 123 {
 124    struct dri2_egl_surface *dri2_surf = data;
 125    dri2_surf->wl_win = NULL;
 126 }
 127
 128 /**
 129  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 130  */
 131 static _EGLSurface *
 132 dri2_wl_create_surface(_EGLDriver *drv, _EGLDisplay *disp,
 133                        _EGLConfig *conf, void *native_window,
 134                        const EGLint *attrib_list)
 135 {
 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    (void) drv;
 143
 144    dri2_surf = calloc(1, sizeof *dri2_surf);
 145    if (!dri2_surf) {
 146       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 147       return NULL;
 148    }
 149
 150    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 151       goto cleanup_surf;
 152
 153    if (conf->RedSize == 5)
 154       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 155    else if (conf->AlphaSize == 0)
 156       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 157    else
 158       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 159
 160    if (!window) {
 161       _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 162       goto cleanup_surf;
 163    }
 164
 165    dri2_surf->wl_win = window;
 166
 167    dri2_surf->wl_win->private = dri2_surf;
 168    dri2_surf->wl_win->resize_callback = resize_callback;
 169    dri2_surf->wl_win->destroy_window_callback = destroy_window_callback;
 170
 171    dri2_surf->base.Width =  -1;
 172    dri2_surf->base.Height = -1;
 173
 174    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 175                                 dri2_surf->base.GLColorspace);
 176
 177    dri2_surf->dri_drawable =
 178       (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen, config,
 179                                            dri2_surf);
 180    if (dri2_surf->dri_drawable == NULL) {
 181       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 182       goto cleanup_surf;
 183    }
 184
 185    return &dri2_surf->base;
 186
 187  cleanup_surf:
 188    free(dri2_surf);
 189
 190    return NULL;
 191 }
 192
 193 /**
 194  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 195  */
 196 static _EGLSurface *
 197 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 198                               _EGLConfig *conf, void *native_window,
 199                               const EGLint *attrib_list)
 200 {
 201    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 202    _EGLSurface *surf;
 203
 204    surf = dri2_wl_create_surface(drv, disp, conf, native_window, attrib_list);
 205
 206    if (surf != NULL)
 207       dri2_wl_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 208
 209    return surf;
 210 }
 211
 212 static _EGLSurface *
 213 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 214                               _EGLConfig *conf, void *native_window,
 215                               const EGLint *attrib_list)
 216 {
 217    /* From the EGL_EXT_platform_wayland spec, version 3:
 218     *
 219     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 220     *   that belongs to Wayland. Any such call fails and generates
 221     *   EGL_BAD_PARAMETER.
 222     */
 223    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 224              "Wayland");
 225    return NULL;
 226 }
 227
 228 /**
 229  * Called via eglDestroySurface(), drv->API.DestroySurface().
 230  */
 231 static EGLBoolean
 232 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 233 {
 234    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 235    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 236    int i;
 237
 238    (void) drv;
 239
 240    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 241
 242    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 243       if (dri2_surf->color_buffers[i].wl_buffer)
 244          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 245       if (dri2_surf->color_buffers[i].dri_image)
 246          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 247       if (dri2_surf->color_buffers[i].linear_copy)
 248          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 249       if (dri2_surf->color_buffers[i].data)
 250          munmap(dri2_surf->color_buffers[i].data,
 251                 dri2_surf->color_buffers[i].data_size);
 252    }
 253
 254    if (dri2_dpy->dri2) {
 255       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 256          if (dri2_surf->dri_buffers[i] &&
 257              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 258             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 259                                           dri2_surf->dri_buffers[i]);
 260    }
 261
 262    if (dri2_surf->throttle_callback)
 263       wl_callback_destroy(dri2_surf->throttle_callback);
 264
 265    if (dri2_surf->wl_win) {
 266       dri2_surf->wl_win->private = NULL;
 267       dri2_surf->wl_win->resize_callback = NULL;
 268       dri2_surf->wl_win->destroy_window_callback = NULL;
 269    }
 270
 271    free(surf);
 272
 273    return EGL_TRUE;
 274 }
 275
 276 static void
 277 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 278 {
 279    struct dri2_egl_display *dri2_dpy =
 280       dri2_egl_display(dri2_surf->base.Resource.Display);
 281    int i;
 282
 283    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 284       if (dri2_surf->color_buffers[i].wl_buffer &&
 285           !dri2_surf->color_buffers[i].locked)
 286          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 287       if (dri2_surf->color_buffers[i].dri_image)
 288          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 289       if (dri2_surf->color_buffers[i].linear_copy)
 290          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 291       if (dri2_surf->color_buffers[i].data)
 292          munmap(dri2_surf->color_buffers[i].data,
 293                 dri2_surf->color_buffers[i].data_size);
 294
 295       dri2_surf->color_buffers[i].wl_buffer = NULL;
 296       dri2_surf->color_buffers[i].dri_image = NULL;
 297       dri2_surf->color_buffers[i].linear_copy = NULL;
 298       dri2_surf->color_buffers[i].data = NULL;
 299       dri2_surf->color_buffers[i].locked = 0;
 300    }
 301
 302    if (dri2_dpy->dri2) {
 303       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 304          if (dri2_surf->dri_buffers[i] &&
 305              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 306             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 307                                           dri2_surf->dri_buffers[i]);
 308    }
 309 }
 310
 311 static int
 312 get_back_bo(struct dri2_egl_surface *dri2_surf)
 313 {
 314    struct dri2_egl_display *dri2_dpy =
 315       dri2_egl_display(dri2_surf->base.Resource.Display);
 316    int i, use_flags;
 317    unsigned int dri_image_format;
 318
 319    /* currently supports three WL DRM formats,
 320     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 321     * and WL_DRM_FORMAT_RGB565
 322     */
 323    switch (dri2_surf->format) {
 324    case WL_DRM_FORMAT_ARGB8888:
 325       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 326       break;
 327    case WL_DRM_FORMAT_XRGB8888:
 328       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 329       break;
 330    case WL_DRM_FORMAT_RGB565:
 331       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 332       break;
 333    default:
 334       /* format is not supported */
 335       return -1;
 336    }
 337
 338    /* We always want to throttle to some event (either a frame callback or
 339     * a sync request) after the commit so that we can be sure the
 340     * compositor has had a chance to handle it and send us a release event
 341     * before we look for a free buffer */
 342    while (dri2_surf->throttle_callback != NULL)
 343       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 344                                     dri2_dpy->wl_queue) == -1)
 345          return -1;
 346
 347    if (dri2_surf->back == NULL) {
 348       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 349          /* Get an unlocked buffer, preferrably one with a dri_buffer
 350           * already allocated. */
 351          if (dri2_surf->color_buffers[i].locked)
 352             continue;
 353          if (dri2_surf->back == NULL)
 354             dri2_surf->back = &dri2_surf->color_buffers[i];
 355          else if (dri2_surf->back->dri_image == NULL)
 356             dri2_surf->back = &dri2_surf->color_buffers[i];
 357       }
 358    }
 359
 360    if (dri2_surf->back == NULL)
 361       return -1;
 362
 363    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 364
 365    if (dri2_dpy->is_different_gpu &&
 366        dri2_surf->back->linear_copy == NULL) {
 367        dri2_surf->back->linear_copy =
 368           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 369                                       dri2_surf->base.Width,
 370                                       dri2_surf->base.Height,
 371                                       dri_image_format,
 372                                       use_flags |
 373                                       __DRI_IMAGE_USE_LINEAR,
 374                                       NULL);
 375       if (dri2_surf->back->linear_copy == NULL)
 376           return -1;
 377    }
 378
 379    if (dri2_surf->back->dri_image == NULL) {
 380       dri2_surf->back->dri_image =
 381          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 382                                       dri2_surf->base.Width,
 383                                       dri2_surf->base.Height,
 384                                       dri_image_format,
 385                                       dri2_dpy->is_different_gpu ?
 386                                          0 : use_flags,
 387                                       NULL);
 388       dri2_surf->back->age = 0;
 389    }
 390    if (dri2_surf->back->dri_image == NULL)
 391       return -1;
 392
 393    dri2_surf->back->locked = 1;
 394
 395    return 0;
 396 }
 397
 398
 399 static void
 400 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 401 {
 402    struct dri2_egl_display *dri2_dpy =
 403       dri2_egl_display(dri2_surf->base.Resource.Display);
 404    __DRIimage *image;
 405    int name, pitch;
 406
 407    image = dri2_surf->back->dri_image;
 408
 409    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 410    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 411
 412    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 413    buffer->name = name;
 414    buffer->pitch = pitch;
 415    buffer->cpp = 4;
 416    buffer->flags = 0;
 417 }
 418
 419 static int
 420 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 421            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 422 {
 423    struct dri2_egl_display *dri2_dpy =
 424       dri2_egl_display(dri2_surf->base.Resource.Display);
 425    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 426
 427    if (b == NULL) {
 428       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 429                                          attachment, format,
 430                                          dri2_surf->base.Width,
 431                                          dri2_surf->base.Height);
 432       dri2_surf->dri_buffers[attachment] = b;
 433    }
 434    if (b == NULL)
 435       return -1;
 436
 437    memcpy(buffer, b, sizeof *buffer);
 438
 439    return 0;
 440 }
 441
 442 static int
 443 update_buffers(struct dri2_egl_surface *dri2_surf)
 444 {
 445    struct dri2_egl_display *dri2_dpy =
 446       dri2_egl_display(dri2_surf->base.Resource.Display);
 447    int i;
 448
 449    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 450        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 451
 452       dri2_wl_release_buffers(dri2_surf);
 453
 454       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 455       dri2_surf->base.Height = dri2_surf->wl_win->height;
 456       dri2_surf->dx = dri2_surf->wl_win->dx;
 457       dri2_surf->dy = dri2_surf->wl_win->dy;
 458    }
 459
 460    if (get_back_bo(dri2_surf) < 0) {
 461       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 462       return -1;
 463    }
 464
 465    /* If we have an extra unlocked buffer at this point, we had to do triple
 466     * buffering for a while, but now can go back to just double buffering.
 467     * That means we can free any unlocked buffer now. */
 468    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 469       if (!dri2_surf->color_buffers[i].locked &&
 470           dri2_surf->color_buffers[i].wl_buffer) {
 471          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 472          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 473          if (dri2_dpy->is_different_gpu)
 474             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 475          dri2_surf->color_buffers[i].wl_buffer = NULL;
 476          dri2_surf->color_buffers[i].dri_image = NULL;
 477          dri2_surf->color_buffers[i].linear_copy = NULL;
 478       }
 479    }
 480
 481    return 0;
 482 }
 483
 484 static __DRIbuffer *
 485 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 486                                 int *width, int *height,
 487                                 unsigned int *attachments, int count,
 488                                 int *out_count, void *loaderPrivate)
 489 {
 490    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 491    int i, j;
 492
 493    if (update_buffers(dri2_surf) < 0)
 494       return NULL;
 495
 496    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 497       switch (attachments[i]) {
 498       case __DRI_BUFFER_BACK_LEFT:
 499          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 500          break;
 501       default:
 502          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 503                         &dri2_surf->buffers[j]) < 0) {
 504             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 505             return NULL;
 506          }
 507          break;
 508       }
 509    }
 510
 511    *out_count = j;
 512    if (j == 0)
 513            return NULL;
 514
 515    *width = dri2_surf->base.Width;
 516    *height = dri2_surf->base.Height;
 517
 518    return dri2_surf->buffers;
 519 }
 520
 521 static __DRIbuffer *
 522 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 523                     int *width, int *height,
 524                     unsigned int *attachments, int count,
 525                     int *out_count, void *loaderPrivate)
 526 {
 527    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 528    unsigned int *attachments_with_format;
 529    __DRIbuffer *buffer;
 530    unsigned int bpp;
 531
 532    int i;
 533
 534    switch (dri2_surf->format) {
 535    case WL_DRM_FORMAT_ARGB8888:
 536    case WL_DRM_FORMAT_XRGB8888:
 537       bpp = 32;
 538       break;
 539    case WL_DRM_FORMAT_RGB565:
 540       bpp = 16;
 541       break;
 542    default:
 543       /* format is not supported */
 544       return NULL;
 545    }
 546
 547    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 548    if (!attachments_with_format) {
 549       *out_count = 0;
 550       return NULL;
 551    }
 552
 553    for (i = 0; i < count; ++i) {
 554       attachments_with_format[2*i] = attachments[i];
 555       attachments_with_format[2*i + 1] = bpp;
 556    }
 557
 558    buffer =
 559       dri2_wl_get_buffers_with_format(driDrawable,
 560                                       width, height,
 561                                       attachments_with_format, count,
 562                                       out_count, loaderPrivate);
 563
 564    free(attachments_with_format);
 565
 566    return buffer;
 567 }
 568
 569 static int
 570 image_get_buffers(__DRIdrawable *driDrawable,
 571                   unsigned int format,
 572                   uint32_t *stamp,
 573                   void *loaderPrivate,
 574                   uint32_t buffer_mask,
 575                   struct __DRIimageList *buffers)
 576 {
 577    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 578
 579    if (update_buffers(dri2_surf) < 0)
 580       return 0;
 581
 582    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 583    buffers->back = dri2_surf->back->dri_image;
 584
 585    return 1;
 586 }
 587
 588 static void
 589 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 590 {
 591    (void) driDrawable;
 592    (void) loaderPrivate;
 593 }
 594
 595 static const __DRIdri2LoaderExtension dri2_loader_extension = {
 596    .base = { __DRI_DRI2_LOADER, 3 },
 597
 598    .getBuffers           = dri2_wl_get_buffers,
 599    .flushFrontBuffer     = dri2_wl_flush_front_buffer,
 600    .getBuffersWithFormat = dri2_wl_get_buffers_with_format,
 601 };
 602
 603 static const __DRIimageLoaderExtension image_loader_extension = {
 604    .base = { __DRI_IMAGE_LOADER, 1 },
 605
 606    .getBuffers          = image_get_buffers,
 607    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 608 };
 609
 610 static void
 611 wayland_throttle_callback(void *data,
 612                           struct wl_callback *callback,
 613                           uint32_t time)
 614 {
 615    struct dri2_egl_surface *dri2_surf = data;
 616
 617    dri2_surf->throttle_callback = NULL;
 618    wl_callback_destroy(callback);
 619 }
 620
 621 static const struct wl_callback_listener throttle_listener = {
 622    .done = wayland_throttle_callback
 623 };
 624
 625 static void
 626 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 627 {
 628    struct dri2_egl_display *dri2_dpy =
 629       dri2_egl_display(dri2_surf->base.Resource.Display);
 630    __DRIimage *image;
 631    int fd, stride, name;
 632
 633    if (dri2_surf->current->wl_buffer != NULL)
 634       return;
 635
 636    if (dri2_dpy->is_different_gpu) {
 637       image = dri2_surf->current->linear_copy;
 638    } else {
 639       image = dri2_surf->current->dri_image;
 640    }
 641    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 642       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 643       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 644
 645       dri2_surf->current->wl_buffer =
 646          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 647                                     fd,
 648                                     dri2_surf->base.Width,
 649                                     dri2_surf->base.Height,
 650                                     dri2_surf->format,
 651                                     0, stride,
 652                                     0, 0,
 653                                     0, 0);
 654       close(fd);
 655    } else {
 656       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 657       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 658
 659       dri2_surf->current->wl_buffer =
 660          wl_drm_create_buffer(dri2_dpy->wl_drm,
 661                               name,
 662                               dri2_surf->base.Width,
 663                               dri2_surf->base.Height,
 664                               stride,
 665                               dri2_surf->format);
 666    }
 667
 668    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 669                       dri2_dpy->wl_queue);
 670    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 671                           &wl_buffer_listener, dri2_surf);
 672 }
 673
 674 static EGLBoolean
 675 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 676                   const EGLint *rects,
 677                   EGLint n_rects)
 678 {
 679 /* The WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION macro and
 680  * wl_proxy_get_version() were both introduced in wayland 1.10.
 681  * Instead of bumping our wayland dependency we just make this
 682  * function conditional on the required 1.10 features, falling
 683  * back to old (correct but suboptimal) behaviour for older
 684  * wayland.
 685  */
 686 #ifdef WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION
 687    int i;
 688
 689    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_win->surface)
 690        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 691       return EGL_FALSE;
 692
 693    for (i = 0; i < n_rects; i++) {
 694       const int *rect = &rects[i * 4];
 695
 696       wl_surface_damage_buffer(dri2_surf->wl_win->surface,
 697                                rect[0],
 698                                dri2_surf->base.Height - rect[1] - rect[3],
 699                                rect[2], rect[3]);
 700    }
 701    return EGL_TRUE;
 702 #endif
 703    return EGL_FALSE;
 704 }
 705 /**
 706  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 707  */
 708 static EGLBoolean
 709 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 710                                  _EGLDisplay *disp,
 711                                  _EGLSurface *draw,
 712                                  const EGLint *rects,
 713                                  EGLint n_rects)
 714 {
 715    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 716    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 717    int i;
 718
 719    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 720       if (dri2_surf->color_buffers[i].age > 0)
 721          dri2_surf->color_buffers[i].age++;
 722
 723    /* Make sure we have a back buffer in case we're swapping without ever
 724     * rendering. */
 725    if (get_back_bo(dri2_surf) < 0) {
 726       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 727       return EGL_FALSE;
 728    }
 729
 730    if (draw->SwapInterval > 0) {
 731       dri2_surf->throttle_callback =
 732          wl_surface_frame(dri2_surf->wl_win->surface);
 733       wl_callback_add_listener(dri2_surf->throttle_callback,
 734                                &throttle_listener, dri2_surf);
 735       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 736                          dri2_dpy->wl_queue);
 737    }
 738
 739    dri2_surf->back->age = 1;
 740    dri2_surf->current = dri2_surf->back;
 741    dri2_surf->back = NULL;
 742
 743    create_wl_buffer(dri2_surf);
 744
 745    wl_surface_attach(dri2_surf->wl_win->surface,
 746                      dri2_surf->current->wl_buffer,
 747                      dri2_surf->dx, dri2_surf->dy);
 748
 749    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 750    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 751    /* reset resize growing parameters */
 752    dri2_surf->dx = 0;
 753    dri2_surf->dy = 0;
 754
 755    /* If the compositor doesn't support damage_buffer, we deliberately
 756     * ignore the damage region and post maximum damage, due to
 757     * https://bugs.freedesktop.org/78190 */
 758    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 759       wl_surface_damage(dri2_surf->wl_win->surface,
 760                         0, 0, INT32_MAX, INT32_MAX);
 761
 762    if (dri2_dpy->is_different_gpu) {
 763       _EGLContext *ctx = _eglGetCurrentContext();
 764       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 765       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 766                                  dri2_surf->current->linear_copy,
 767                                  dri2_surf->current->dri_image,
 768                                  0, 0, dri2_surf->base.Width,
 769                                  dri2_surf->base.Height,
 770                                  0, 0, dri2_surf->base.Width,
 771                                  dri2_surf->base.Height, 0);
 772    }
 773
 774    dri2_flush_drawable_for_swapbuffers(disp, draw);
 775    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 776
 777    wl_surface_commit(dri2_surf->wl_win->surface);
 778
 779    /* If we're not waiting for a frame callback then we'll at least throttle
 780     * to a sync callback so that we always give a chance for the compositor to
 781     * handle the commit and send a release event before checking for a free
 782     * buffer */
 783    if (dri2_surf->throttle_callback == NULL) {
 784       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
 785       wl_callback_add_listener(dri2_surf->throttle_callback,
 786                                &throttle_listener, dri2_surf);
 787       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 788                          dri2_dpy->wl_queue);
 789    }
 790
 791    wl_display_flush(dri2_dpy->wl_dpy);
 792
 793    return EGL_TRUE;
 794 }
 795
 796 static EGLint
 797 dri2_wl_query_buffer_age(_EGLDriver *drv,
 798                          _EGLDisplay *disp, _EGLSurface *surface)
 799 {
 800    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 801
 802    if (get_back_bo(dri2_surf) < 0) {
 803       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 804       return 0;
 805    }
 806
 807    return dri2_surf->back->age;
 808 }
 809
 810 static EGLBoolean
 811 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 812 {
 813    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 814 }
 815
 816 static struct wl_buffer *
 817 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 818                                           _EGLDisplay *disp,
 819                                           _EGLImage *img)
 820 {
 821    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 822    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 823    __DRIimage *image = dri2_img->dri_image;
 824    struct wl_buffer *buffer;
 825    int width, height, format, pitch;
 826    enum wl_drm_format wl_format;
 827
 828    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 829
 830    switch (format) {
 831    case __DRI_IMAGE_FORMAT_ARGB8888:
 832       if (!(dri2_dpy->formats & HAS_ARGB8888))
 833          goto bad_format;
 834       wl_format = WL_DRM_FORMAT_ARGB8888;
 835       break;
 836    case __DRI_IMAGE_FORMAT_XRGB8888:
 837       if (!(dri2_dpy->formats & HAS_XRGB8888))
 838          goto bad_format;
 839       wl_format = WL_DRM_FORMAT_XRGB8888;
 840       break;
 841    default:
 842       goto bad_format;
 843    }
 844
 845    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 846    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 847    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 848
 849    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 850       int fd;
 851
 852       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 853
 854       buffer =
 855          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 856                                     fd,
 857                                     width, height,
 858                                     wl_format,
 859                                     0, pitch,
 860                                     0, 0,
 861                                     0, 0);
 862
 863       close(fd);
 864    } else {
 865       int name;
 866
 867       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 868
 869       buffer =
 870          wl_drm_create_buffer(dri2_dpy->wl_drm,
 871                               name,
 872                               width, height,
 873                               pitch,
 874                               wl_format);
 875    }
 876
 877    /* The buffer object will have been created with our internal event queue
 878     * because it is using the wl_drm object as a proxy factory. We want the
 879     * buffer to be used by the application so we'll reset it to the display's
 880     * default event queue */
 881    if (buffer)
 882       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 883
 884    return buffer;
 885
 886 bad_format:
 887    _eglError(EGL_BAD_MATCH, "unsupported image format");
 888    return NULL;
 889 }
 890
 891 static int
 892 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 893 {
 894    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 895    int ret = 0;
 896
 897    if (dri2_dpy->is_render_node) {
 898       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 899                             "authenticate for render-nodes");
 900       return 0;
 901    }
 902    dri2_dpy->authenticated = 0;
 903
 904    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 905    if (roundtrip(dri2_dpy) < 0)
 906       ret = -1;
 907
 908    if (!dri2_dpy->authenticated)
 909       ret = -1;
 910
 911    /* reset authenticated */
 912    dri2_dpy->authenticated = 1;
 913
 914    return ret;
 915 }
 916
 917 static void
 918 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 919 {
 920    struct dri2_egl_display *dri2_dpy = data;
 921    drm_magic_t magic;
 922
 923    dri2_dpy->device_name = strdup(device);
 924    if (!dri2_dpy->device_name)
 925       return;
 926
 927    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 928    if (dri2_dpy->fd == -1) {
 929       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 930               dri2_dpy->device_name, strerror(errno));
 931       return;
 932    }
 933
 934    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 935       dri2_dpy->authenticated = 1;
 936    } else {
 937       drmGetMagic(dri2_dpy->fd, &magic);
 938       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 939    }
 940 }
 941
 942 static void
 943 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 944 {
 945    struct dri2_egl_display *dri2_dpy = data;
 946
 947    switch (format) {
 948    case WL_DRM_FORMAT_ARGB8888:
 949       dri2_dpy->formats |= HAS_ARGB8888;
 950       break;
 951    case WL_DRM_FORMAT_XRGB8888:
 952       dri2_dpy->formats |= HAS_XRGB8888;
 953       break;
 954    case WL_DRM_FORMAT_RGB565:
 955       dri2_dpy->formats |= HAS_RGB565;
 956       break;
 957    }
 958 }
 959
 960 static void
 961 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 962 {
 963    struct dri2_egl_display *dri2_dpy = data;
 964
 965    dri2_dpy->capabilities = value;
 966 }
 967
 968 static void
 969 drm_handle_authenticated(void *data, struct wl_drm *drm)
 970 {
 971    struct dri2_egl_display *dri2_dpy = data;
 972
 973    dri2_dpy->authenticated = 1;
 974 }
 975
 976 static const struct wl_drm_listener drm_listener = {
 977    .device = drm_handle_device,
 978    .format = drm_handle_format,
 979    .authenticated = drm_handle_authenticated,
 980    .capabilities = drm_handle_capabilities
 981 };
 982
 983 static void
 984 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 985                        const char *interface, uint32_t version)
 986 {
 987    struct dri2_egl_display *dri2_dpy = data;
 988
 989    if (version > 1)
 990       version = 2;
 991    if (strcmp(interface, "wl_drm") == 0) {
 992       dri2_dpy->wl_drm =
 993          wl_registry_bind(registry, name, &wl_drm_interface, version);
 994       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 995    }
 996 }
 997
 998 static void
 999 registry_handle_global_remove(void *data, struct wl_registry *registry,
1000                               uint32_t name)
1001 {
1002 }
1003
1004 static const struct wl_registry_listener registry_listener_drm = {
1005    .global = registry_handle_global_drm,
1006    .global_remove = registry_handle_global_remove
1007 };
1008
1009 static EGLBoolean
1010 dri2_wl_swap_interval(_EGLDriver *drv,
1011                    _EGLDisplay *disp,
1012                    _EGLSurface *surf,
1013                    EGLint interval)
1014 {
1015    if (interval > surf->Config->MaxSwapInterval)
1016       interval = surf->Config->MaxSwapInterval;
1017    else if (interval < surf->Config->MinSwapInterval)
1018       interval = surf->Config->MinSwapInterval;
1019
1020    surf->SwapInterval = interval;
1021
1022    return EGL_TRUE;
1023 }
1024
1025 static void
1026 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1027 {
1028    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1029
1030    /* We can't use values greater than 1 on Wayland because we are using the
1031     * frame callback to synchronise the frame and the only way we be sure to
1032     * get a frame callback is to attach a new buffer. Therefore we can't just
1033     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1034
1035    if (dri2_dpy->config)
1036       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1037                                      "vblank_mode", &vblank_mode);
1038    switch (vblank_mode) {
1039    case DRI_CONF_VBLANK_NEVER:
1040       dri2_dpy->min_swap_interval = 0;
1041       dri2_dpy->max_swap_interval = 0;
1042       dri2_dpy->default_swap_interval = 0;
1043       break;
1044    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1045       dri2_dpy->min_swap_interval = 1;
1046       dri2_dpy->max_swap_interval = 1;
1047       dri2_dpy->default_swap_interval = 1;
1048       break;
1049    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1050       dri2_dpy->min_swap_interval = 0;
1051       dri2_dpy->max_swap_interval = 1;
1052       dri2_dpy->default_swap_interval = 0;
1053       break;
1054    default:
1055    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1056       dri2_dpy->min_swap_interval = 0;
1057       dri2_dpy->max_swap_interval = 1;
1058       dri2_dpy->default_swap_interval = 1;
1059       break;
1060    }
1061 }
1062
1063 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1064    .authenticate = dri2_wl_authenticate,
1065    .create_window_surface = dri2_wl_create_window_surface,
1066    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1067    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1068    .destroy_surface = dri2_wl_destroy_surface,
1069    .create_image = dri2_create_image_khr,
1070    .swap_interval = dri2_wl_swap_interval,
1071    .swap_buffers = dri2_wl_swap_buffers,
1072    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1073    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1074    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1075    .copy_buffers = dri2_fallback_copy_buffers,
1076    .query_buffer_age = dri2_wl_query_buffer_age,
1077    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1078    .get_sync_values = dri2_fallback_get_sync_values,
1079    .get_dri_drawable = dri2_surface_get_dri_drawable,
1080 };
1081
1082 static const __DRIextension *dri2_loader_extensions[] = {
1083    &dri2_loader_extension.base,
1084    &image_lookup_extension.base,
1085    &use_invalidate.base,
1086    NULL,
1087 };
1088
1089 static const __DRIextension *image_loader_extensions[] = {
1090    &image_loader_extension.base,
1091    &image_lookup_extension.base,
1092    &use_invalidate.base,
1093    NULL,
1094 };
1095
1096 static EGLBoolean
1097 dri2_wl_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
1098 {
1099    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1100    static const struct {
1101       const char *format_name;
1102       int has_format;
1103       unsigned int rgba_masks[4];
1104    } visuals[] = {
1105       { "XRGB8888", HAS_XRGB8888, { 0xff0000, 0xff00, 0x00ff, 0xff000000 } },
1106       { "ARGB8888", HAS_ARGB8888, { 0xff0000, 0xff00, 0x00ff, 0 } },
1107       { "RGB565",   HAS_RGB565,   { 0x00f800, 0x07e0, 0x001f, 0 } },
1108    };
1109    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
1110    unsigned int count, i, j;
1111
1112    count = 0;
1113    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1114       for (j = 0; j < ARRAY_SIZE(visuals); j++) {
1115          struct dri2_egl_config *dri2_conf;
1116
1117          if (!(dri2_dpy->formats & visuals[j].has_format))
1118             continue;
1119
1120          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
1121                count + 1, EGL_WINDOW_BIT, NULL, visuals[j].rgba_masks);
1122          if (dri2_conf) {
1123             count++;
1124             format_count[j]++;
1125          }
1126       }
1127    }
1128
1129    for (i = 0; i < ARRAY_SIZE(format_count); i++) {
1130       if (!format_count[i]) {
1131          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
1132                  visuals[i].format_name);
1133       }
1134    }
1135
1136    return (count != 0);
1137 }
1138
1139 static EGLBoolean
1140 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1141 {
1142    struct dri2_egl_display *dri2_dpy;
1143
1144    loader_set_logger(_eglLog);
1145
1146    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1147    if (!dri2_dpy)
1148       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1149
1150    disp->DriverData = (void *) dri2_dpy;
1151    if (disp->PlatformDisplay == NULL) {
1152       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1153       if (dri2_dpy->wl_dpy == NULL)
1154          goto cleanup_dpy;
1155       dri2_dpy->own_device = 1;
1156    } else {
1157       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1158    }
1159
1160    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1161
1162    if (dri2_dpy->own_device)
1163       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1164
1165    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1166    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1167                       dri2_dpy->wl_queue);
1168    wl_registry_add_listener(dri2_dpy->wl_registry,
1169                             &registry_listener_drm, dri2_dpy);
1170    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1171       goto cleanup_registry;
1172
1173    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1174       goto cleanup_drm;
1175
1176    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1177       goto cleanup_fd;
1178
1179    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1180                                                &dri2_dpy->is_different_gpu);
1181    if (dri2_dpy->is_different_gpu) {
1182       free(dri2_dpy->device_name);
1183       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1184       if (!dri2_dpy->device_name) {
1185          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1186                                   "for requested GPU");
1187          goto cleanup_fd;
1188       }
1189    }
1190
1191    /* we have to do the check now, because loader_get_user_preferred_fd
1192     * will return a render-node when the requested gpu is different
1193     * to the server, but also if the client asks for the same gpu than
1194     * the server by requesting its pci-id */
1195    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1196
1197    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
1198    if (dri2_dpy->driver_name == NULL) {
1199       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1200       goto cleanup_fd;
1201    }
1202
1203    if (!dri2_load_driver(disp))
1204       goto cleanup_driver_name;
1205
1206    /* render nodes cannot use Gem names, and thus do not support
1207     * the __DRI_DRI2_LOADER extension */
1208    if (!dri2_dpy->is_render_node)
1209       dri2_dpy->loader_extensions = dri2_loader_extensions;
1210    else
1211       dri2_dpy->loader_extensions = image_loader_extensions;
1212
1213    if (!dri2_create_screen(disp))
1214       goto cleanup_driver;
1215
1216    dri2_wl_setup_swap_interval(dri2_dpy);
1217
1218    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1219     * createImageFromFds support indicates that Prime export/import
1220     * is supported by the driver. Fall back to
1221     * gem names if we don't have Prime support. */
1222
1223    if (dri2_dpy->image->base.version < 7 ||
1224        dri2_dpy->image->createImageFromFds == NULL)
1225       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1226
1227    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1228     * The server needs to accept them */
1229    if (dri2_dpy->is_render_node &&
1230        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1231       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1232       goto cleanup_screen;
1233    }
1234
1235    if (dri2_dpy->is_different_gpu &&
1236        (dri2_dpy->image->base.version < 9 ||
1237         dri2_dpy->image->blitImage == NULL)) {
1238       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1239                             "Image extension in the driver is not "
1240                             "compatible. Version 9 or later and blitImage() "
1241                             "are required");
1242       goto cleanup_screen;
1243    }
1244
1245    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1246       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1247       goto cleanup_screen;
1248    }
1249
1250    dri2_set_WL_bind_wayland_display(drv, disp);
1251    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1252     * because the buffer of the EGLImage has likely a tiling mode the server
1253     * gpu won't support. These is no way to check for now. Thus do not support the
1254     * extension */
1255    if (!dri2_dpy->is_different_gpu) {
1256       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1257    } else {
1258       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1259          dri2_fallback_create_wayland_buffer_from_image;
1260    }
1261    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1262
1263    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1264
1265    /* Fill vtbl last to prevent accidentally calling virtual function during
1266     * initialization.
1267     */
1268    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1269
1270    return EGL_TRUE;
1271
1272  cleanup_screen:
1273    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1274  cleanup_driver:
1275    dlclose(dri2_dpy->driver);
1276  cleanup_driver_name:
1277    free(dri2_dpy->driver_name);
1278  cleanup_fd:
1279    close(dri2_dpy->fd);
1280  cleanup_drm:
1281    free(dri2_dpy->device_name);
1282    wl_drm_destroy(dri2_dpy->wl_drm);
1283  cleanup_registry:
1284    wl_registry_destroy(dri2_dpy->wl_registry);
1285    wl_event_queue_destroy(dri2_dpy->wl_queue);
1286  cleanup_dpy:
1287    free(dri2_dpy);
1288    disp->DriverData = NULL;
1289
1290    return EGL_FALSE;
1291 }
1292
1293 static int
1294 dri2_wl_swrast_get_stride_for_format(int format, int w)
1295 {
1296    if (format == WL_SHM_FORMAT_RGB565)
1297       return 2 * w;
1298    else /* ARGB8888 || XRGB8888 */
1299       return 4 * w;
1300 }
1301
1302 /*
1303  * Taken from weston shared/os-compatibility.c
1304  */
1305
1306 #ifndef HAVE_MKOSTEMP
1307
1308 static int
1309 set_cloexec_or_close(int fd)
1310 {
1311    long flags;
1312
1313    if (fd == -1)
1314       return -1;
1315
1316    flags = fcntl(fd, F_GETFD);
1317    if (flags == -1)
1318       goto err;
1319
1320    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1321       goto err;
1322
1323    return fd;
1324
1325 err:
1326    close(fd);
1327    return -1;
1328 }
1329
1330 #endif
1331
1332 /*
1333  * Taken from weston shared/os-compatibility.c
1334  */
1335
1336 static int
1337 create_tmpfile_cloexec(char *tmpname)
1338 {
1339    int fd;
1340
1341 #ifdef HAVE_MKOSTEMP
1342    fd = mkostemp(tmpname, O_CLOEXEC);
1343    if (fd >= 0)
1344       unlink(tmpname);
1345 #else
1346    fd = mkstemp(tmpname);
1347    if (fd >= 0) {
1348       fd = set_cloexec_or_close(fd);
1349       unlink(tmpname);
1350    }
1351 #endif
1352
1353    return fd;
1354 }
1355
1356 /*
1357  * Taken from weston shared/os-compatibility.c
1358  *
1359  * Create a new, unique, anonymous file of the given size, and
1360  * return the file descriptor for it. The file descriptor is set
1361  * CLOEXEC. The file is immediately suitable for mmap()'ing
1362  * the given size at offset zero.
1363  *
1364  * The file should not have a permanent backing store like a disk,
1365  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1366  *
1367  * The file name is deleted from the file system.
1368  *
1369  * The file is suitable for buffer sharing between processes by
1370  * transmitting the file descriptor over Unix sockets using the
1371  * SCM_RIGHTS methods.
1372  *
1373  * If the C library implements posix_fallocate(), it is used to
1374  * guarantee that disk space is available for the file at the
1375  * given size. If disk space is insufficent, errno is set to ENOSPC.
1376  * If posix_fallocate() is not supported, program may receive
1377  * SIGBUS on accessing mmap()'ed file contents instead.
1378  */
1379 static int
1380 os_create_anonymous_file(off_t size)
1381 {
1382    static const char template[] = "/mesa-shared-XXXXXX";
1383    const char *path;
1384    char *name;
1385    int fd;
1386    int ret;
1387
1388    path = getenv("XDG_RUNTIME_DIR");
1389    if (!path) {
1390       errno = ENOENT;
1391       return -1;
1392    }
1393
1394    name = malloc(strlen(path) + sizeof(template));
1395    if (!name)
1396       return -1;
1397
1398    strcpy(name, path);
1399    strcat(name, template);
1400
1401    fd = create_tmpfile_cloexec(name);
1402
1403    free(name);
1404
1405    if (fd < 0)
1406       return -1;
1407
1408    ret = ftruncate(fd, size);
1409    if (ret < 0) {
1410       close(fd);
1411       return -1;
1412    }
1413
1414    return fd;
1415 }
1416
1417
1418 static EGLBoolean
1419 dri2_wl_swrast_allocate_buffer(struct dri2_egl_display *dri2_dpy,
1420                                int format, int w, int h,
1421                                void **data, int *size,
1422                                struct wl_buffer **buffer)
1423 {
1424    struct wl_shm_pool *pool;
1425    int fd, stride, size_map;
1426    void *data_map;
1427
1428    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1429    size_map = h * stride;
1430
1431    /* Create a sharable buffer */
1432    fd = os_create_anonymous_file(size_map);
1433    if (fd < 0)
1434       return EGL_FALSE;
1435
1436    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1437    if (data_map == MAP_FAILED) {
1438       close(fd);
1439       return EGL_FALSE;
1440    }
1441
1442    /* Share it in a wl_buffer */
1443    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1444    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1445    wl_shm_pool_destroy(pool);
1446    close(fd);
1447
1448    *data = data_map;
1449    *size = size_map;
1450    return EGL_TRUE;
1451 }
1452
1453 static int
1454 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1455 {
1456    struct dri2_egl_display *dri2_dpy =
1457       dri2_egl_display(dri2_surf->base.Resource.Display);
1458    int i;
1459
1460    /* we need to do the following operations only once per frame */
1461    if (dri2_surf->back)
1462       return 0;
1463
1464    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1465        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1466
1467       dri2_wl_release_buffers(dri2_surf);
1468
1469       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1470       dri2_surf->base.Height = dri2_surf->wl_win->height;
1471       dri2_surf->dx = dri2_surf->wl_win->dx;
1472       dri2_surf->dy = dri2_surf->wl_win->dy;
1473       dri2_surf->current = NULL;
1474    }
1475
1476    /* find back buffer */
1477
1478    /* We always want to throttle to some event (either a frame callback or
1479     * a sync request) after the commit so that we can be sure the
1480     * compositor has had a chance to handle it and send us a release event
1481     * before we look for a free buffer */
1482    while (dri2_surf->throttle_callback != NULL)
1483       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1484                                     dri2_dpy->wl_queue) == -1)
1485          return -1;
1486
1487    /* try get free buffer already created */
1488    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1489       if (!dri2_surf->color_buffers[i].locked &&
1490           dri2_surf->color_buffers[i].wl_buffer) {
1491           dri2_surf->back = &dri2_surf->color_buffers[i];
1492           break;
1493       }
1494    }
1495
1496    /* else choose any another free location */
1497    if (!dri2_surf->back) {
1498       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1499          if (!dri2_surf->color_buffers[i].locked) {
1500              dri2_surf->back = &dri2_surf->color_buffers[i];
1501              if (!dri2_wl_swrast_allocate_buffer(dri2_dpy,
1502                                                  dri2_surf->format,
1503                                                  dri2_surf->base.Width,
1504                                                  dri2_surf->base.Height,
1505                                                  &dri2_surf->back->data,
1506                                                  &dri2_surf->back->data_size,
1507                                                  &dri2_surf->back->wl_buffer)) {
1508                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1509                  return -1;
1510              }
1511              wl_proxy_set_queue((struct wl_proxy *) dri2_surf->back->wl_buffer,
1512                                 dri2_dpy->wl_queue);
1513              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1514                                     &wl_buffer_listener, dri2_surf);
1515              break;
1516          }
1517       }
1518    }
1519
1520    if (!dri2_surf->back) {
1521       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1522       return -1;
1523    }
1524
1525    dri2_surf->back->locked = 1;
1526
1527    /* If we have an extra unlocked buffer at this point, we had to do triple
1528     * buffering for a while, but now can go back to just double buffering.
1529     * That means we can free any unlocked buffer now. */
1530    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1531       if (!dri2_surf->color_buffers[i].locked &&
1532           dri2_surf->color_buffers[i].wl_buffer) {
1533          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1534          munmap(dri2_surf->color_buffers[i].data,
1535                 dri2_surf->color_buffers[i].data_size);
1536          dri2_surf->color_buffers[i].wl_buffer = NULL;
1537          dri2_surf->color_buffers[i].data = NULL;
1538       }
1539    }
1540
1541    return 0;
1542 }
1543
1544 static void*
1545 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1546 {
1547    /* if there has been a resize: */
1548    if (!dri2_surf->current)
1549       return NULL;
1550
1551    return dri2_surf->current->data;
1552 }
1553
1554 static void*
1555 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1556 {
1557    assert(dri2_surf->back);
1558    return dri2_surf->back->data;
1559 }
1560
1561 static void
1562 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1563 {
1564    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1565
1566    if (dri2_surf->base.SwapInterval > 0) {
1567       dri2_surf->throttle_callback =
1568          wl_surface_frame(dri2_surf->wl_win->surface);
1569       wl_callback_add_listener(dri2_surf->throttle_callback,
1570                                &throttle_listener, dri2_surf);
1571       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1572                          dri2_dpy->wl_queue);
1573    }
1574
1575    dri2_surf->current = dri2_surf->back;
1576    dri2_surf->back = NULL;
1577
1578    wl_surface_attach(dri2_surf->wl_win->surface,
1579                      dri2_surf->current->wl_buffer,
1580                      dri2_surf->dx, dri2_surf->dy);
1581
1582    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1583    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1584    /* reset resize growing parameters */
1585    dri2_surf->dx = 0;
1586    dri2_surf->dy = 0;
1587
1588    wl_surface_damage(dri2_surf->wl_win->surface,
1589                      0, 0, INT32_MAX, INT32_MAX);
1590    wl_surface_commit(dri2_surf->wl_win->surface);
1591
1592    /* If we're not waiting for a frame callback then we'll at least throttle
1593     * to a sync callback so that we always give a chance for the compositor to
1594     * handle the commit and send a release event before checking for a free
1595     * buffer */
1596    if (dri2_surf->throttle_callback == NULL) {
1597       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
1598       wl_callback_add_listener(dri2_surf->throttle_callback,
1599                                &throttle_listener, dri2_surf);
1600       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1601                          dri2_dpy->wl_queue);
1602    }
1603
1604    wl_display_flush(dri2_dpy->wl_dpy);
1605 }
1606
1607 static void
1608 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1609                                  int *x, int *y, int *w, int *h,
1610                                  void *loaderPrivate)
1611 {
1612    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1613
1614    (void) swrast_update_buffers(dri2_surf);
1615    *x = 0;
1616    *y = 0;
1617    *w = dri2_surf->base.Width;
1618    *h = dri2_surf->base.Height;
1619 }
1620
1621 static void
1622 dri2_wl_swrast_get_image(__DRIdrawable * read,
1623                          int x, int y, int w, int h,
1624                          char *data, void *loaderPrivate)
1625 {
1626    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1627    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1628    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1629    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1630    int dst_stride = copy_width;
1631    char *src, *dst;
1632
1633    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1634    if (!src) {
1635       memset(data, 0, copy_width * h);
1636       return;
1637    }
1638
1639    assert(data != src);
1640    assert(copy_width <= src_stride);
1641
1642    src += x_offset;
1643    src += y * src_stride;
1644    dst = data;
1645
1646    if (copy_width > src_stride-x_offset)
1647       copy_width = src_stride-x_offset;
1648    if (h > dri2_surf->base.Height-y)
1649       h = dri2_surf->base.Height-y;
1650
1651    for (; h>0; h--) {
1652       memcpy(dst, src, copy_width);
1653       src += src_stride;
1654       dst += dst_stride;
1655    }
1656 }
1657
1658 static void
1659 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1660                          int x, int y, int w, int h, int stride,
1661                          char *data, void *loaderPrivate)
1662 {
1663    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1664    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1665    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1666    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1667    char *src, *dst;
1668
1669    assert(copy_width <= stride);
1670
1671    (void) swrast_update_buffers(dri2_surf);
1672    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1673
1674    /* partial copy, copy old content */
1675    if (copy_width < dst_stride)
1676       dri2_wl_swrast_get_image(draw, 0, 0,
1677                                dri2_surf->base.Width, dri2_surf->base.Height,
1678                                dst, loaderPrivate);
1679
1680    dst += x_offset;
1681    dst += y * dst_stride;
1682
1683    src = data;
1684
1685    /* drivers expect we do these checks (and some rely on it) */
1686    if (copy_width > dst_stride-x_offset)
1687       copy_width = dst_stride-x_offset;
1688    if (h > dri2_surf->base.Height-y)
1689       h = dri2_surf->base.Height-y;
1690
1691    for (; h>0; h--) {
1692       memcpy(dst, src, copy_width);
1693       src += stride;
1694       dst += dst_stride;
1695    }
1696    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1697 }
1698
1699 static void
1700 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1701                          int x, int y, int w, int h,
1702                          char *data, void *loaderPrivate)
1703 {
1704    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1705    int stride;
1706
1707    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1708    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1709                              stride, data, loaderPrivate);
1710 }
1711
1712 /**
1713  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
1714  */
1715 static _EGLSurface *
1716 dri2_wl_swrast_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
1717                                      _EGLConfig *conf, void *native_window,
1718                                      const EGLint *attrib_list)
1719 {
1720    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1721    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
1722    struct wl_egl_window *window = native_window;
1723    struct dri2_egl_surface *dri2_surf;
1724    const __DRIconfig *config;
1725
1726    (void) drv;
1727
1728    dri2_surf = calloc(1, sizeof *dri2_surf);
1729    if (!dri2_surf) {
1730       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
1731       return NULL;
1732    }
1733
1734    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
1735       goto cleanup_surf;
1736
1737    if (conf->RedSize == 5)
1738       dri2_surf->format = WL_SHM_FORMAT_RGB565;
1739    else if (conf->AlphaSize == 0)
1740       dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
1741    else
1742       dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
1743
1744    dri2_surf->wl_win = window;
1745
1746    dri2_surf->base.Width = -1;
1747    dri2_surf->base.Height = -1;
1748
1749    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
1750                                 dri2_surf->base.GLColorspace);
1751
1752    dri2_surf->dri_drawable =
1753       (*dri2_dpy->swrast->createNewDrawable)(dri2_dpy->dri_screen,
1754                                              config, dri2_surf);
1755    if (dri2_surf->dri_drawable == NULL) {
1756       _eglError(EGL_BAD_ALLOC, "swrast->createNewDrawable");
1757       goto cleanup_dri_drawable;
1758    }
1759
1760    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
1761                          dri2_dpy->default_swap_interval);
1762
1763    return &dri2_surf->base;
1764
1765  cleanup_dri_drawable:
1766    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
1767  cleanup_surf:
1768    free(dri2_surf);
1769
1770    return NULL;
1771 }
1772
1773 static EGLBoolean
1774 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1775 {
1776    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1777    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1778
1779    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1780    return EGL_TRUE;
1781 }
1782
1783 static void
1784 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1785 {
1786    struct dri2_egl_display *dri2_dpy = data;
1787
1788    switch (format) {
1789    case WL_SHM_FORMAT_ARGB8888:
1790       dri2_dpy->formats |= HAS_ARGB8888;
1791       break;
1792    case WL_SHM_FORMAT_XRGB8888:
1793       dri2_dpy->formats |= HAS_XRGB8888;
1794       break;
1795    case WL_SHM_FORMAT_RGB565:
1796       dri2_dpy->formats |= HAS_RGB565;
1797       break;
1798    }
1799 }
1800
1801 static const struct wl_shm_listener shm_listener = {
1802    .format = shm_handle_format
1803 };
1804
1805 static void
1806 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1807                               const char *interface, uint32_t version)
1808 {
1809    struct dri2_egl_display *dri2_dpy = data;
1810
1811    if (strcmp(interface, "wl_shm") == 0) {
1812       dri2_dpy->wl_shm =
1813          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1814       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1815    }
1816 }
1817
1818 static const struct wl_registry_listener registry_listener_swrast = {
1819    .global = registry_handle_global_swrast,
1820    .global_remove = registry_handle_global_remove
1821 };
1822
1823 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1824    .authenticate = NULL,
1825    .create_window_surface = dri2_wl_swrast_create_window_surface,
1826    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1827    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1828    .destroy_surface = dri2_wl_destroy_surface,
1829    .create_image = dri2_fallback_create_image_khr,
1830    .swap_interval = dri2_wl_swap_interval,
1831    .swap_buffers = dri2_wl_swrast_swap_buffers,
1832    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1833    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1834    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1835    .copy_buffers = dri2_fallback_copy_buffers,
1836    .query_buffer_age = dri2_fallback_query_buffer_age,
1837    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1838    .get_sync_values = dri2_fallback_get_sync_values,
1839    .get_dri_drawable = dri2_surface_get_dri_drawable,
1840 };
1841
1842 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1843    .base = { __DRI_SWRAST_LOADER, 2 },
1844
1845    .getDrawableInfo = dri2_wl_swrast_get_drawable_info,
1846    .putImage        = dri2_wl_swrast_put_image,
1847    .getImage        = dri2_wl_swrast_get_image,
1848    .putImage2       = dri2_wl_swrast_put_image2,
1849 };
1850
1851 static const __DRIextension *swrast_loader_extensions[] = {
1852    &swrast_loader_extension.base,
1853    NULL,
1854 };
1855
1856 static EGLBoolean
1857 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1858 {
1859    struct dri2_egl_display *dri2_dpy;
1860
1861    loader_set_logger(_eglLog);
1862
1863    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1864    if (!dri2_dpy)
1865       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1866
1867    disp->DriverData = (void *) dri2_dpy;
1868    if (disp->PlatformDisplay == NULL) {
1869       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1870       if (dri2_dpy->wl_dpy == NULL)
1871          goto cleanup_dpy;
1872       dri2_dpy->own_device = 1;
1873    } else {
1874       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1875    }
1876
1877    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1878
1879    if (dri2_dpy->own_device)
1880       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1881
1882    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1883    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1884                       dri2_dpy->wl_queue);
1885    wl_registry_add_listener(dri2_dpy->wl_registry,
1886                             &registry_listener_swrast, dri2_dpy);
1887
1888    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1889       goto cleanup_registry;
1890
1891    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1892       goto cleanup_shm;
1893
1894    dri2_dpy->fd = -1;
1895    dri2_dpy->driver_name = strdup("swrast");
1896    if (!dri2_load_driver_swrast(disp))
1897       goto cleanup_shm;
1898
1899    dri2_dpy->loader_extensions = swrast_loader_extensions;
1900
1901    if (!dri2_create_screen(disp))
1902       goto cleanup_driver;
1903
1904    dri2_wl_setup_swap_interval(dri2_dpy);
1905
1906    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1907       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1908       goto cleanup_screen;
1909    }
1910
1911    /* Fill vtbl last to prevent accidentally calling virtual function during
1912     * initialization.
1913     */
1914    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1915
1916    return EGL_TRUE;
1917
1918  cleanup_screen:
1919    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1920  cleanup_driver:
1921    dlclose(dri2_dpy->driver);
1922  cleanup_shm:
1923    wl_shm_destroy(dri2_dpy->wl_shm);
1924  cleanup_registry:
1925    wl_registry_destroy(dri2_dpy->wl_registry);
1926    wl_event_queue_destroy(dri2_dpy->wl_queue);
1927  cleanup_dpy:
1928    free(dri2_dpy);
1929    disp->DriverData = NULL;
1930
1931    return EGL_FALSE;
1932 }
1933
1934 EGLBoolean
1935 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1936 {
1937    EGLBoolean initialized = EGL_TRUE;
1938
1939    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1940
1941    if (hw_accel) {
1942       if (!dri2_initialize_wayland_drm(drv, disp)) {
1943          initialized = dri2_initialize_wayland_swrast(drv, disp);
1944       }
1945    } else {
1946       initialized = dri2_initialize_wayland_swrast(drv, disp);
1947    }
1948
1949    return initialized;
1950
1951 }