src/egl/drivers/dri2/platform_wayland.c

   1 /*
   2  * Copyright © 2011-2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  27  */
  28
  29 #include <stdint.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <limits.h>
  33 #include <dlfcn.h>
  34 #include <errno.h>
  35 #include <unistd.h>
  36 #include <fcntl.h>
  37 #include <xf86drm.h>
  38
  39 #include "egl_dri2.h"
  40 #include "egl_dri2_fallbacks.h"
  41 #include "loader.h"
  42
  43 #include <wayland-client.h>
  44 #include "wayland-drm-client-protocol.h"
  45
  46 enum wl_drm_format_flags {
  47    HAS_ARGB8888 = 1,
  48    HAS_XRGB8888 = 2,
  49    HAS_RGB565 = 4,
  50 };
  51
  52 static EGLBoolean
  53 dri2_wl_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  54                       EGLint interval);
  55
  56 static void
  57 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  58 {
  59    int *done = data;
  60
  61    *done = 1;
  62    wl_callback_destroy(callback);
  63 }
  64
  65 static const struct wl_callback_listener sync_listener = {
  66    sync_callback
  67 };
  68
  69 static int
  70 roundtrip(struct dri2_egl_display *dri2_dpy)
  71 {
  72    struct wl_callback *callback;
  73    int done = 0, ret = 0;
  74
  75    callback = wl_display_sync(dri2_dpy->wl_dpy);
  76    wl_callback_add_listener(callback, &sync_listener, &done);
  77    wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
  78    while (ret != -1 && !done)
  79       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  80
  81    if (!done)
  82       wl_callback_destroy(callback);
  83
  84    return ret;
  85 }
  86
  87 static void
  88 wl_buffer_release(void *data, struct wl_buffer *buffer)
  89 {
  90    struct dri2_egl_surface *dri2_surf = data;
  91    int i;
  92
  93    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  94       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  95          break;
  96
  97    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
  98       wl_buffer_destroy(buffer);
  99       return;
 100    }
 101
 102    dri2_surf->color_buffers[i].locked = 0;
 103 }
 104
 105 static struct wl_buffer_listener wl_buffer_listener = {
 106    wl_buffer_release
 107 };
 108
 109 static void
 110 resize_callback(struct wl_egl_window *wl_win, void *data)
 111 {
 112    struct dri2_egl_surface *dri2_surf = data;
 113    struct dri2_egl_display *dri2_dpy =
 114       dri2_egl_display(dri2_surf->base.Resource.Display);
 115
 116    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 117 }
 118
 119 /**
 120  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 121  */
 122 static _EGLSurface *
 123 dri2_wl_create_surface(_EGLDriver *drv, _EGLDisplay *disp,
 124                        _EGLConfig *conf, void *native_window,
 125                        const EGLint *attrib_list)
 126 {
 127    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 128    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 129    struct wl_egl_window *window = native_window;
 130    struct dri2_egl_surface *dri2_surf;
 131
 132    (void) drv;
 133
 134    dri2_surf = calloc(1, sizeof *dri2_surf);
 135    if (!dri2_surf) {
 136       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 137       return NULL;
 138    }
 139
 140    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 141       goto cleanup_surf;
 142
 143    if (conf->RedSize == 5)
 144       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 145    else if (conf->AlphaSize == 0)
 146       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 147    else
 148       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 149
 150    dri2_surf->wl_win = window;
 151
 152    dri2_surf->wl_win->private = dri2_surf;
 153    dri2_surf->wl_win->resize_callback = resize_callback;
 154
 155    dri2_surf->base.Width =  -1;
 156    dri2_surf->base.Height = -1;
 157
 158    dri2_surf->dri_drawable =
 159       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 160                                             dri2_conf->dri_double_config,
 161                                             dri2_surf);
 162    if (dri2_surf->dri_drawable == NULL) {
 163       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 164       goto cleanup_dri_drawable;
 165    }
 166
 167    return &dri2_surf->base;
 168
 169  cleanup_dri_drawable:
 170    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 171  cleanup_surf:
 172    free(dri2_surf);
 173
 174    return NULL;
 175 }
 176
 177 /**
 178  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 179  */
 180 static _EGLSurface *
 181 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 182                               _EGLConfig *conf, void *native_window,
 183                               const EGLint *attrib_list)
 184 {
 185    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 186    _EGLSurface *surf;
 187
 188    surf = dri2_wl_create_surface(drv, disp, conf, native_window, attrib_list);
 189
 190    if (surf != NULL)
 191       dri2_wl_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 192
 193    return surf;
 194 }
 195
 196 static _EGLSurface *
 197 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 198                               _EGLConfig *conf, void *native_window,
 199                               const EGLint *attrib_list)
 200 {
 201    /* From the EGL_EXT_platform_wayland spec, version 3:
 202     *
 203     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 204     *   that belongs to Wayland. Any such call fails and generates
 205     *   EGL_BAD_PARAMETER.
 206     */
 207    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 208              "Wayland");
 209    return NULL;
 210 }
 211
 212 /**
 213  * Called via eglDestroySurface(), drv->API.DestroySurface().
 214  */
 215 static EGLBoolean
 216 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 217 {
 218    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 219    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 220    int i;
 221
 222    (void) drv;
 223
 224    if (!_eglPutSurface(surf))
 225       return EGL_TRUE;
 226
 227    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 228
 229    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 230       if (dri2_surf->color_buffers[i].wl_buffer)
 231          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 232       if (dri2_surf->color_buffers[i].dri_image)
 233          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 234       if (dri2_surf->color_buffers[i].linear_copy)
 235          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 236    }
 237
 238    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 239       if (dri2_surf->dri_buffers[i] &&
 240           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 241          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 242                                        dri2_surf->dri_buffers[i]);
 243
 244    if (dri2_surf->throttle_callback)
 245       wl_callback_destroy(dri2_surf->throttle_callback);
 246
 247    dri2_surf->wl_win->private = NULL;
 248    dri2_surf->wl_win->resize_callback = NULL;
 249
 250    free(surf);
 251
 252    return EGL_TRUE;
 253 }
 254
 255 static void
 256 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 257 {
 258    struct dri2_egl_display *dri2_dpy =
 259       dri2_egl_display(dri2_surf->base.Resource.Display);
 260    int i;
 261
 262    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 263       if (dri2_surf->color_buffers[i].wl_buffer &&
 264           !dri2_surf->color_buffers[i].locked)
 265          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 266       if (dri2_surf->color_buffers[i].dri_image)
 267          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 268       if (dri2_surf->color_buffers[i].linear_copy)
 269          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 270
 271       dri2_surf->color_buffers[i].wl_buffer = NULL;
 272       dri2_surf->color_buffers[i].dri_image = NULL;
 273       dri2_surf->color_buffers[i].linear_copy = NULL;
 274       dri2_surf->color_buffers[i].locked = 0;
 275    }
 276
 277    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 278       if (dri2_surf->dri_buffers[i] &&
 279           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 280          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 281                                        dri2_surf->dri_buffers[i]);
 282 }
 283
 284 static int
 285 get_back_bo(struct dri2_egl_surface *dri2_surf)
 286 {
 287    struct dri2_egl_display *dri2_dpy =
 288       dri2_egl_display(dri2_surf->base.Resource.Display);
 289    int i;
 290    unsigned int dri_image_format;
 291
 292    /* currently supports three WL DRM formats,
 293     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 294     * and WL_DRM_FORMAT_RGB565
 295     */
 296    switch (dri2_surf->format) {
 297    case WL_DRM_FORMAT_ARGB8888:
 298       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 299       break;
 300    case WL_DRM_FORMAT_XRGB8888:
 301       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 302       break;
 303    case WL_DRM_FORMAT_RGB565:
 304       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 305       break;
 306    default:
 307       /* format is not supported */
 308       return -1;
 309    }
 310
 311    /* We always want to throttle to some event (either a frame callback or
 312     * a sync request) after the commit so that we can be sure the
 313     * compositor has had a chance to handle it and send us a release event
 314     * before we look for a free buffer */
 315    while (dri2_surf->throttle_callback != NULL)
 316       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 317                                     dri2_dpy->wl_queue) == -1)
 318          return -1;
 319
 320    if (dri2_surf->back == NULL) {
 321       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 322          /* Get an unlocked buffer, preferrably one with a dri_buffer
 323           * already allocated. */
 324          if (dri2_surf->color_buffers[i].locked)
 325             continue;
 326          if (dri2_surf->back == NULL)
 327             dri2_surf->back = &dri2_surf->color_buffers[i];
 328          else if (dri2_surf->back->dri_image == NULL)
 329             dri2_surf->back = &dri2_surf->color_buffers[i];
 330       }
 331    }
 332
 333    if (dri2_surf->back == NULL)
 334       return -1;
 335
 336    if (dri2_dpy->is_different_gpu &&
 337        dri2_surf->back->linear_copy == NULL) {
 338        dri2_surf->back->linear_copy =
 339           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 340                                       dri2_surf->base.Width,
 341                                       dri2_surf->base.Height,
 342                                       dri_image_format,
 343                                       __DRI_IMAGE_USE_SHARE |
 344                                       __DRI_IMAGE_USE_LINEAR,
 345                                       NULL);
 346       if (dri2_surf->back->linear_copy == NULL)
 347           return -1;
 348    }
 349
 350    if (dri2_surf->back->dri_image == NULL) {
 351       dri2_surf->back->dri_image =
 352          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 353                                       dri2_surf->base.Width,
 354                                       dri2_surf->base.Height,
 355                                       dri_image_format,
 356                                       dri2_dpy->is_different_gpu ?
 357                                          0 : __DRI_IMAGE_USE_SHARE,
 358                                       NULL);
 359       dri2_surf->back->age = 0;
 360    }
 361    if (dri2_surf->back->dri_image == NULL)
 362       return -1;
 363
 364    dri2_surf->back->locked = 1;
 365
 366    return 0;
 367 }
 368
 369
 370 static void
 371 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 372 {
 373    struct dri2_egl_display *dri2_dpy =
 374       dri2_egl_display(dri2_surf->base.Resource.Display);
 375    __DRIimage *image;
 376    int name, pitch;
 377
 378    image = dri2_surf->back->dri_image;
 379
 380    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 381    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 382
 383    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 384    buffer->name = name;
 385    buffer->pitch = pitch;
 386    buffer->cpp = 4;
 387    buffer->flags = 0;
 388 }
 389
 390 static int
 391 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 392            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 393 {
 394    struct dri2_egl_display *dri2_dpy =
 395       dri2_egl_display(dri2_surf->base.Resource.Display);
 396    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 397
 398    if (b == NULL) {
 399       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 400                                          attachment, format,
 401                                          dri2_surf->base.Width,
 402                                          dri2_surf->base.Height);
 403       dri2_surf->dri_buffers[attachment] = b;
 404    }
 405    if (b == NULL)
 406       return -1;
 407
 408    memcpy(buffer, b, sizeof *buffer);
 409
 410    return 0;
 411 }
 412
 413 static int
 414 update_buffers(struct dri2_egl_surface *dri2_surf)
 415 {
 416    struct dri2_egl_display *dri2_dpy =
 417       dri2_egl_display(dri2_surf->base.Resource.Display);
 418    int i;
 419
 420    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 421        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 422
 423       dri2_wl_release_buffers(dri2_surf);
 424
 425       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 426       dri2_surf->base.Height = dri2_surf->wl_win->height;
 427       dri2_surf->dx = dri2_surf->wl_win->dx;
 428       dri2_surf->dy = dri2_surf->wl_win->dy;
 429    }
 430
 431    if (get_back_bo(dri2_surf) < 0) {
 432       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 433       return -1;
 434    }
 435
 436    /* If we have an extra unlocked buffer at this point, we had to do triple
 437     * buffering for a while, but now can go back to just double buffering.
 438     * That means we can free any unlocked buffer now. */
 439    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 440       if (!dri2_surf->color_buffers[i].locked &&
 441           dri2_surf->color_buffers[i].wl_buffer) {
 442          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 443          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 444          if (dri2_dpy->is_different_gpu)
 445             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 446          dri2_surf->color_buffers[i].wl_buffer = NULL;
 447          dri2_surf->color_buffers[i].dri_image = NULL;
 448          dri2_surf->color_buffers[i].linear_copy = NULL;
 449       }
 450    }
 451
 452    return 0;
 453 }
 454
 455 static __DRIbuffer *
 456 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 457                                 int *width, int *height,
 458                                 unsigned int *attachments, int count,
 459                                 int *out_count, void *loaderPrivate)
 460 {
 461    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 462    int i, j;
 463
 464    if (update_buffers(dri2_surf) < 0)
 465       return NULL;
 466
 467    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 468       switch (attachments[i]) {
 469       case __DRI_BUFFER_BACK_LEFT:
 470          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 471          break;
 472       default:
 473          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 474                         &dri2_surf->buffers[j]) < 0) {
 475             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 476             return NULL;
 477          }
 478          break;
 479       }
 480    }
 481
 482    *out_count = j;
 483    if (j == 0)
 484            return NULL;
 485
 486    *width = dri2_surf->base.Width;
 487    *height = dri2_surf->base.Height;
 488
 489    return dri2_surf->buffers;
 490 }
 491
 492 static __DRIbuffer *
 493 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 494                     int *width, int *height,
 495                     unsigned int *attachments, int count,
 496                     int *out_count, void *loaderPrivate)
 497 {
 498    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 499    unsigned int *attachments_with_format;
 500    __DRIbuffer *buffer;
 501    unsigned int bpp;
 502
 503    int i;
 504
 505    switch (dri2_surf->format) {
 506    case WL_DRM_FORMAT_ARGB8888:
 507    case WL_DRM_FORMAT_XRGB8888:
 508       bpp = 32;
 509       break;
 510    case WL_DRM_FORMAT_RGB565:
 511       bpp = 16;
 512       break;
 513    default:
 514       /* format is not supported */
 515       return NULL;
 516    }
 517
 518    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 519    if (!attachments_with_format) {
 520       *out_count = 0;
 521       return NULL;
 522    }
 523
 524    for (i = 0; i < count; ++i) {
 525       attachments_with_format[2*i] = attachments[i];
 526       attachments_with_format[2*i + 1] = bpp;
 527    }
 528
 529    buffer =
 530       dri2_wl_get_buffers_with_format(driDrawable,
 531                                       width, height,
 532                                       attachments_with_format, count,
 533                                       out_count, loaderPrivate);
 534
 535    free(attachments_with_format);
 536
 537    return buffer;
 538 }
 539
 540 static int
 541 image_get_buffers(__DRIdrawable *driDrawable,
 542                   unsigned int format,
 543                   uint32_t *stamp,
 544                   void *loaderPrivate,
 545                   uint32_t buffer_mask,
 546                   struct __DRIimageList *buffers)
 547 {
 548    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 549
 550    if (update_buffers(dri2_surf) < 0)
 551       return 0;
 552
 553    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 554    buffers->back = dri2_surf->back->dri_image;
 555
 556    return 1;
 557 }
 558
 559 static void
 560 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 561 {
 562    (void) driDrawable;
 563    (void) loaderPrivate;
 564 }
 565
 566 static const __DRIimageLoaderExtension image_loader_extension = {
 567    .base = { __DRI_IMAGE_LOADER, 1 },
 568
 569    .getBuffers          = image_get_buffers,
 570    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 571 };
 572
 573 static void
 574 wayland_throttle_callback(void *data,
 575                           struct wl_callback *callback,
 576                           uint32_t time)
 577 {
 578    struct dri2_egl_surface *dri2_surf = data;
 579
 580    dri2_surf->throttle_callback = NULL;
 581    wl_callback_destroy(callback);
 582 }
 583
 584 static const struct wl_callback_listener throttle_listener = {
 585    wayland_throttle_callback
 586 };
 587
 588 static void
 589 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 590 {
 591    struct dri2_egl_display *dri2_dpy =
 592       dri2_egl_display(dri2_surf->base.Resource.Display);
 593    __DRIimage *image;
 594    int fd, stride, name;
 595
 596    if (dri2_surf->current->wl_buffer != NULL)
 597       return;
 598
 599    if (dri2_dpy->is_different_gpu) {
 600       image = dri2_surf->current->linear_copy;
 601    } else {
 602       image = dri2_surf->current->dri_image;
 603    }
 604    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 605       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 606       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 607
 608       dri2_surf->current->wl_buffer =
 609          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 610                                     fd,
 611                                     dri2_surf->base.Width,
 612                                     dri2_surf->base.Height,
 613                                     dri2_surf->format,
 614                                     0, stride,
 615                                     0, 0,
 616                                     0, 0);
 617       close(fd);
 618    } else {
 619       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 620       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 621
 622       dri2_surf->current->wl_buffer =
 623          wl_drm_create_buffer(dri2_dpy->wl_drm,
 624                               name,
 625                               dri2_surf->base.Width,
 626                               dri2_surf->base.Height,
 627                               stride,
 628                               dri2_surf->format);
 629    }
 630
 631    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 632                       dri2_dpy->wl_queue);
 633    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 634                           &wl_buffer_listener, dri2_surf);
 635 }
 636
 637 /**
 638  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 639  */
 640 static EGLBoolean
 641 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 642                                  _EGLDisplay *disp,
 643                                  _EGLSurface *draw,
 644                                  const EGLint *rects,
 645                                  EGLint n_rects)
 646 {
 647    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 648    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 649    int i;
 650
 651    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 652       if (dri2_surf->color_buffers[i].age > 0)
 653          dri2_surf->color_buffers[i].age++;
 654
 655    /* Make sure we have a back buffer in case we're swapping without ever
 656     * rendering. */
 657    if (get_back_bo(dri2_surf) < 0) {
 658       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 659       return EGL_FALSE;
 660    }
 661
 662    if (draw->SwapInterval > 0) {
 663       dri2_surf->throttle_callback =
 664          wl_surface_frame(dri2_surf->wl_win->surface);
 665       wl_callback_add_listener(dri2_surf->throttle_callback,
 666                                &throttle_listener, dri2_surf);
 667       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 668                          dri2_dpy->wl_queue);
 669    }
 670
 671    dri2_surf->back->age = 1;
 672    dri2_surf->current = dri2_surf->back;
 673    dri2_surf->back = NULL;
 674
 675    create_wl_buffer(dri2_surf);
 676
 677    wl_surface_attach(dri2_surf->wl_win->surface,
 678                      dri2_surf->current->wl_buffer,
 679                      dri2_surf->dx, dri2_surf->dy);
 680
 681    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 682    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 683    /* reset resize growing parameters */
 684    dri2_surf->dx = 0;
 685    dri2_surf->dy = 0;
 686
 687    if (n_rects == 0) {
 688       wl_surface_damage(dri2_surf->wl_win->surface,
 689                         0, 0, INT32_MAX, INT32_MAX);
 690    } else {
 691       for (i = 0; i < n_rects; i++) {
 692          const int *rect = &rects[i * 4];
 693          wl_surface_damage(dri2_surf->wl_win->surface,
 694                            rect[0],
 695                            dri2_surf->base.Height - rect[1] - rect[3],
 696                            rect[2], rect[3]);
 697       }
 698    }
 699
 700    if (dri2_dpy->is_different_gpu) {
 701       _EGLContext *ctx = _eglGetCurrentContext();
 702       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 703       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 704                                  dri2_surf->current->linear_copy,
 705                                  dri2_surf->current->dri_image,
 706                                  0, 0, dri2_surf->base.Width,
 707                                  dri2_surf->base.Height,
 708                                  0, 0, dri2_surf->base.Width,
 709                                  dri2_surf->base.Height, 0);
 710    }
 711
 712    dri2_flush_drawable_for_swapbuffers(disp, draw);
 713    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 714
 715    wl_surface_commit(dri2_surf->wl_win->surface);
 716
 717    /* If we're not waiting for a frame callback then we'll at least throttle
 718     * to a sync callback so that we always give a chance for the compositor to
 719     * handle the commit and send a release event before checking for a free
 720     * buffer */
 721    if (dri2_surf->throttle_callback == NULL) {
 722       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
 723       wl_callback_add_listener(dri2_surf->throttle_callback,
 724                                &throttle_listener, dri2_surf);
 725       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 726                          dri2_dpy->wl_queue);
 727    }
 728
 729    wl_display_flush(dri2_dpy->wl_dpy);
 730
 731    return EGL_TRUE;
 732 }
 733
 734 static EGLint
 735 dri2_wl_query_buffer_age(_EGLDriver *drv,
 736                          _EGLDisplay *disp, _EGLSurface *surface)
 737 {
 738    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 739
 740    if (get_back_bo(dri2_surf) < 0) {
 741       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 742       return 0;
 743    }
 744
 745    return dri2_surf->back->age;
 746 }
 747
 748 static EGLBoolean
 749 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 750 {
 751    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 752 }
 753
 754 static struct wl_buffer *
 755 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 756                                           _EGLDisplay *disp,
 757                                           _EGLImage *img)
 758 {
 759    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 760    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 761    __DRIimage *image = dri2_img->dri_image;
 762    struct wl_buffer *buffer;
 763    int width, height, format, pitch;
 764    enum wl_drm_format wl_format;
 765
 766    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 767
 768    switch (format) {
 769    case __DRI_IMAGE_FORMAT_ARGB8888:
 770       if (!(dri2_dpy->formats & HAS_ARGB8888))
 771          goto bad_format;
 772       wl_format = WL_DRM_FORMAT_ARGB8888;
 773       break;
 774    case __DRI_IMAGE_FORMAT_XRGB8888:
 775       if (!(dri2_dpy->formats & HAS_XRGB8888))
 776          goto bad_format;
 777       wl_format = WL_DRM_FORMAT_XRGB8888;
 778       break;
 779    default:
 780       goto bad_format;
 781    }
 782
 783    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 784    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 785    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 786
 787    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 788       int fd;
 789
 790       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 791
 792       buffer =
 793          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 794                                     fd,
 795                                     width, height,
 796                                     wl_format,
 797                                     0, pitch,
 798                                     0, 0,
 799                                     0, 0);
 800
 801       close(fd);
 802    } else {
 803       int name;
 804
 805       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 806
 807       buffer =
 808          wl_drm_create_buffer(dri2_dpy->wl_drm,
 809                               name,
 810                               width, height,
 811                               pitch,
 812                               wl_format);
 813    }
 814
 815    /* The buffer object will have been created with our internal event queue
 816     * because it is using the wl_drm object as a proxy factory. We want the
 817     * buffer to be used by the application so we'll reset it to the display's
 818     * default event queue */
 819    if (buffer)
 820       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 821
 822    return buffer;
 823
 824 bad_format:
 825    _eglError(EGL_BAD_MATCH, "unsupported image format");
 826    return NULL;
 827 }
 828
 829 static char
 830 is_fd_render_node(int fd)
 831 {
 832    struct stat render;
 833
 834    if (fstat(fd, &render))
 835       return 0;
 836
 837    if (!S_ISCHR(render.st_mode))
 838       return 0;
 839
 840    if (render.st_rdev & 0x80)
 841       return 1;
 842    return 0;
 843 }
 844
 845 static int
 846 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 847 {
 848    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 849    int ret = 0;
 850
 851    if (dri2_dpy->is_render_node) {
 852       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 853                             "authenticate for render-nodes");
 854       return 0;
 855    }
 856    dri2_dpy->authenticated = 0;
 857
 858    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 859    if (roundtrip(dri2_dpy) < 0)
 860       ret = -1;
 861
 862    if (!dri2_dpy->authenticated)
 863       ret = -1;
 864
 865    /* reset authenticated */
 866    dri2_dpy->authenticated = 1;
 867
 868    return ret;
 869 }
 870
 871 static void
 872 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 873 {
 874    struct dri2_egl_display *dri2_dpy = data;
 875    drm_magic_t magic;
 876
 877    dri2_dpy->device_name = strdup(device);
 878    if (!dri2_dpy->device_name)
 879       return;
 880
 881 #ifdef O_CLOEXEC
 882    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 883    if (dri2_dpy->fd == -1 && errno == EINVAL)
 884 #endif
 885    {
 886       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 887       if (dri2_dpy->fd != -1)
 888          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 889             FD_CLOEXEC);
 890    }
 891    if (dri2_dpy->fd == -1) {
 892       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 893               dri2_dpy->device_name, strerror(errno));
 894       return;
 895    }
 896
 897    if (is_fd_render_node(dri2_dpy->fd)) {
 898       dri2_dpy->authenticated = 1;
 899    } else {
 900       drmGetMagic(dri2_dpy->fd, &magic);
 901       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 902    }
 903 }
 904
 905 static void
 906 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 907 {
 908    struct dri2_egl_display *dri2_dpy = data;
 909
 910    switch (format) {
 911    case WL_DRM_FORMAT_ARGB8888:
 912       dri2_dpy->formats |= HAS_ARGB8888;
 913       break;
 914    case WL_DRM_FORMAT_XRGB8888:
 915       dri2_dpy->formats |= HAS_XRGB8888;
 916       break;
 917    case WL_DRM_FORMAT_RGB565:
 918       dri2_dpy->formats |= HAS_RGB565;
 919       break;
 920    }
 921 }
 922
 923 static void
 924 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 925 {
 926    struct dri2_egl_display *dri2_dpy = data;
 927
 928    dri2_dpy->capabilities = value;
 929 }
 930
 931 static void
 932 drm_handle_authenticated(void *data, struct wl_drm *drm)
 933 {
 934    struct dri2_egl_display *dri2_dpy = data;
 935
 936    dri2_dpy->authenticated = 1;
 937 }
 938
 939 static const struct wl_drm_listener drm_listener = {
 940         drm_handle_device,
 941         drm_handle_format,
 942         drm_handle_authenticated,
 943         drm_handle_capabilities
 944 };
 945
 946 static void
 947 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 948                        const char *interface, uint32_t version)
 949 {
 950    struct dri2_egl_display *dri2_dpy = data;
 951
 952    if (version > 1)
 953       version = 2;
 954    if (strcmp(interface, "wl_drm") == 0) {
 955       dri2_dpy->wl_drm =
 956          wl_registry_bind(registry, name, &wl_drm_interface, version);
 957       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 958    }
 959 }
 960
 961 static void
 962 registry_handle_global_remove(void *data, struct wl_registry *registry,
 963                               uint32_t name)
 964 {
 965 }
 966
 967 static const struct wl_registry_listener registry_listener = {
 968    registry_handle_global,
 969    registry_handle_global_remove
 970 };
 971
 972 static EGLBoolean
 973 dri2_wl_swap_interval(_EGLDriver *drv,
 974                    _EGLDisplay *disp,
 975                    _EGLSurface *surf,
 976                    EGLint interval)
 977 {
 978    if (interval > surf->Config->MaxSwapInterval)
 979       interval = surf->Config->MaxSwapInterval;
 980    else if (interval < surf->Config->MinSwapInterval)
 981       interval = surf->Config->MinSwapInterval;
 982
 983    surf->SwapInterval = interval;
 984
 985    return EGL_TRUE;
 986 }
 987
 988 static void
 989 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
 990 {
 991    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 992
 993    /* We can't use values greater than 1 on Wayland because we are using the
 994     * frame callback to synchronise the frame and the only way we be sure to
 995     * get a frame callback is to attach a new buffer. Therefore we can't just
 996     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
 997
 998    if (dri2_dpy->config)
 999       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1000                                      "vblank_mode", &vblank_mode);
1001    switch (vblank_mode) {
1002    case DRI_CONF_VBLANK_NEVER:
1003       dri2_dpy->min_swap_interval = 0;
1004       dri2_dpy->max_swap_interval = 0;
1005       dri2_dpy->default_swap_interval = 0;
1006       break;
1007    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1008       dri2_dpy->min_swap_interval = 1;
1009       dri2_dpy->max_swap_interval = 1;
1010       dri2_dpy->default_swap_interval = 1;
1011       break;
1012    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1013       dri2_dpy->min_swap_interval = 0;
1014       dri2_dpy->max_swap_interval = 1;
1015       dri2_dpy->default_swap_interval = 0;
1016       break;
1017    default:
1018    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1019       dri2_dpy->min_swap_interval = 0;
1020       dri2_dpy->max_swap_interval = 1;
1021       dri2_dpy->default_swap_interval = 1;
1022       break;
1023    }
1024 }
1025
1026 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1027    .authenticate = dri2_wl_authenticate,
1028    .create_window_surface = dri2_wl_create_window_surface,
1029    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1030    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1031    .destroy_surface = dri2_wl_destroy_surface,
1032    .create_image = dri2_create_image_khr,
1033    .swap_interval = dri2_wl_swap_interval,
1034    .swap_buffers = dri2_wl_swap_buffers,
1035    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1036    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1037    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1038    .copy_buffers = dri2_fallback_copy_buffers,
1039    .query_buffer_age = dri2_wl_query_buffer_age,
1040    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1041    .get_sync_values = dri2_fallback_get_sync_values,
1042 };
1043
1044 EGLBoolean
1045 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1046 {
1047    struct dri2_egl_display *dri2_dpy;
1048    const __DRIconfig *config;
1049    uint32_t types;
1050    int i;
1051    static const unsigned int argb_masks[4] =
1052       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1053    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1054    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1055
1056    loader_set_logger(_eglLog);
1057
1058    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1059    if (!dri2_dpy)
1060       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1061
1062    disp->DriverData = (void *) dri2_dpy;
1063    if (disp->PlatformDisplay == NULL) {
1064       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1065       if (dri2_dpy->wl_dpy == NULL)
1066          goto cleanup_dpy;
1067       dri2_dpy->own_device = 1;
1068    } else {
1069       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1070    }
1071
1072    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1073
1074    if (dri2_dpy->own_device)
1075       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1076
1077    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1078    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1079                       dri2_dpy->wl_queue);
1080    wl_registry_add_listener(dri2_dpy->wl_registry,
1081                             &registry_listener, dri2_dpy);
1082    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1083       goto cleanup_registry;
1084
1085    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1086       goto cleanup_drm;
1087
1088    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1089       goto cleanup_fd;
1090
1091    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1092                                                &dri2_dpy->is_different_gpu);
1093    if (dri2_dpy->is_different_gpu) {
1094       free(dri2_dpy->device_name);
1095       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1096       if (!dri2_dpy->device_name) {
1097          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1098                                   "for requested GPU");
1099          goto cleanup_fd;
1100       }
1101    }
1102
1103    /* we have to do the check now, because loader_get_user_preferred_fd
1104     * will return a render-node when the requested gpu is different
1105     * to the server, but also if the client asks for the same gpu than
1106     * the server by requesting its pci-id */
1107    dri2_dpy->is_render_node = is_fd_render_node(dri2_dpy->fd);
1108
1109    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
1110    if (dri2_dpy->driver_name == NULL) {
1111       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1112       goto cleanup_fd;
1113    }
1114
1115    if (!dri2_load_driver(disp))
1116       goto cleanup_driver_name;
1117
1118    dri2_dpy->extensions[0] = &image_loader_extension.base;
1119    dri2_dpy->extensions[1] = &image_lookup_extension.base;
1120    dri2_dpy->extensions[2] = &use_invalidate.base;
1121
1122    /* render nodes cannot use Gem names, and thus do not support
1123     * the __DRI_DRI2_LOADER extension */
1124    if (!dri2_dpy->is_render_node) {
1125       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1126       dri2_dpy->dri2_loader_extension.base.version = 3;
1127       dri2_dpy->dri2_loader_extension.getBuffers = dri2_wl_get_buffers;
1128       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_wl_flush_front_buffer;
1129       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1130          dri2_wl_get_buffers_with_format;
1131       dri2_dpy->extensions[3] = &dri2_dpy->dri2_loader_extension.base;
1132       dri2_dpy->extensions[4] = NULL;
1133    } else
1134       dri2_dpy->extensions[3] = NULL;
1135
1136    dri2_dpy->swap_available = EGL_TRUE;
1137
1138    if (!dri2_create_screen(disp))
1139       goto cleanup_driver;
1140
1141    dri2_wl_setup_swap_interval(dri2_dpy);
1142
1143    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1144     * createImageFromFds support indicates that Prime export/import
1145     * is supported by the driver. Fall back to
1146     * gem names if we don't have Prime support. */
1147
1148    if (dri2_dpy->image->base.version < 7 ||
1149        dri2_dpy->image->createImageFromFds == NULL)
1150       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1151
1152    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1153     * The server needs to accept them */
1154    if (dri2_dpy->is_render_node &&
1155        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1156       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1157       goto cleanup_screen;
1158    }
1159
1160    if (dri2_dpy->is_different_gpu &&
1161        (dri2_dpy->image->base.version < 9 ||
1162         dri2_dpy->image->blitImage == NULL)) {
1163       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1164                             "Image extension in the driver is not "
1165                             "compatible. Version 9 or later and blitImage() "
1166                             "are required");
1167       goto cleanup_screen;
1168    }
1169
1170    types = EGL_WINDOW_BIT;
1171    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1172       config = dri2_dpy->driver_configs[i];
1173       if (dri2_dpy->formats & HAS_XRGB8888)
1174          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1175       if (dri2_dpy->formats & HAS_ARGB8888)
1176          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1177       if (dri2_dpy->formats & HAS_RGB565)
1178         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1179    }
1180
1181    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1182    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1183     * because the buffer of the EGLImage has likely a tiling mode the server
1184     * gpu won't support. These is no way to check for now. Thus do not support the
1185     * extension */
1186    if (!dri2_dpy->is_different_gpu) {
1187       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1188    } else {
1189       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1190          dri2_fallback_create_wayland_buffer_from_image;
1191    }
1192    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1193
1194    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1195
1196    /* we're supporting EGL 1.4 */
1197    disp->VersionMajor = 1;
1198    disp->VersionMinor = 4;
1199
1200    /* Fill vtbl last to prevent accidentally calling virtual function during
1201     * initialization.
1202     */
1203    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1204
1205    return EGL_TRUE;
1206
1207  cleanup_screen:
1208    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1209  cleanup_driver:
1210    dlclose(dri2_dpy->driver);
1211  cleanup_driver_name:
1212    free(dri2_dpy->driver_name);
1213  cleanup_fd:
1214    close(dri2_dpy->fd);
1215  cleanup_drm:
1216    free(dri2_dpy->device_name);
1217    wl_drm_destroy(dri2_dpy->wl_drm);
1218  cleanup_registry:
1219    wl_registry_destroy(dri2_dpy->wl_registry);
1220    wl_event_queue_destroy(dri2_dpy->wl_queue);
1221  cleanup_dpy:
1222    free(dri2_dpy);
1223
1224    return EGL_FALSE;
1225 }