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 /**
 122  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 123  */
 124 static _EGLSurface *
 125 dri2_wl_create_surface(_EGLDriver *drv, _EGLDisplay *disp,
 126                        _EGLConfig *conf, void *native_window,
 127                        const EGLint *attrib_list)
 128 {
 129    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 130    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 131    struct wl_egl_window *window = native_window;
 132    struct dri2_egl_surface *dri2_surf;
 133    const __DRIconfig *config;
 134
 135    (void) drv;
 136
 137    dri2_surf = calloc(1, sizeof *dri2_surf);
 138    if (!dri2_surf) {
 139       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 140       return NULL;
 141    }
 142
 143    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 144       goto cleanup_surf;
 145
 146    if (conf->RedSize == 5)
 147       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 148    else if (conf->AlphaSize == 0)
 149       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 150    else
 151       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 152
 153    if (!window) {
 154       _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 155       goto cleanup_surf;
 156    }
 157
 158    dri2_surf->wl_win = window;
 159
 160    dri2_surf->wl_win->private = dri2_surf;
 161    dri2_surf->wl_win->resize_callback = resize_callback;
 162
 163    dri2_surf->base.Width =  -1;
 164    dri2_surf->base.Height = -1;
 165
 166    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 167                                 dri2_surf->base.GLColorspace);
 168
 169    dri2_surf->dri_drawable =
 170       (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen, config,
 171                                            dri2_surf);
 172    if (dri2_surf->dri_drawable == NULL) {
 173       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 174       goto cleanup_surf;
 175    }
 176
 177    return &dri2_surf->base;
 178
 179  cleanup_surf:
 180    free(dri2_surf);
 181
 182    return NULL;
 183 }
 184
 185 /**
 186  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 187  */
 188 static _EGLSurface *
 189 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 190                               _EGLConfig *conf, void *native_window,
 191                               const EGLint *attrib_list)
 192 {
 193    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 194    _EGLSurface *surf;
 195
 196    surf = dri2_wl_create_surface(drv, disp, conf, native_window, attrib_list);
 197
 198    if (surf != NULL)
 199       dri2_wl_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 200
 201    return surf;
 202 }
 203
 204 static _EGLSurface *
 205 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 206                               _EGLConfig *conf, void *native_window,
 207                               const EGLint *attrib_list)
 208 {
 209    /* From the EGL_EXT_platform_wayland spec, version 3:
 210     *
 211     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 212     *   that belongs to Wayland. Any such call fails and generates
 213     *   EGL_BAD_PARAMETER.
 214     */
 215    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 216              "Wayland");
 217    return NULL;
 218 }
 219
 220 /**
 221  * Called via eglDestroySurface(), drv->API.DestroySurface().
 222  */
 223 static EGLBoolean
 224 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 225 {
 226    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 227    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 228    int i;
 229
 230    (void) drv;
 231
 232    if (!_eglPutSurface(surf))
 233       return EGL_TRUE;
 234
 235    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 236
 237    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 238       if (dri2_surf->color_buffers[i].wl_buffer)
 239          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 240       if (dri2_surf->color_buffers[i].dri_image)
 241          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 242       if (dri2_surf->color_buffers[i].linear_copy)
 243          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 244       if (dri2_surf->color_buffers[i].data)
 245          munmap(dri2_surf->color_buffers[i].data,
 246                 dri2_surf->color_buffers[i].data_size);
 247    }
 248
 249    if (dri2_dpy->dri2) {
 250       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 251          if (dri2_surf->dri_buffers[i] &&
 252              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 253             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 254                                           dri2_surf->dri_buffers[i]);
 255    }
 256
 257    if (dri2_surf->throttle_callback)
 258       wl_callback_destroy(dri2_surf->throttle_callback);
 259
 260    dri2_surf->wl_win->private = NULL;
 261    dri2_surf->wl_win->resize_callback = NULL;
 262
 263    free(surf);
 264
 265    return EGL_TRUE;
 266 }
 267
 268 static void
 269 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 270 {
 271    struct dri2_egl_display *dri2_dpy =
 272       dri2_egl_display(dri2_surf->base.Resource.Display);
 273    int i;
 274
 275    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 276       if (dri2_surf->color_buffers[i].wl_buffer &&
 277           !dri2_surf->color_buffers[i].locked)
 278          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 279       if (dri2_surf->color_buffers[i].dri_image)
 280          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 281       if (dri2_surf->color_buffers[i].linear_copy)
 282          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 283       if (dri2_surf->color_buffers[i].data)
 284          munmap(dri2_surf->color_buffers[i].data,
 285                 dri2_surf->color_buffers[i].data_size);
 286
 287       dri2_surf->color_buffers[i].wl_buffer = NULL;
 288       dri2_surf->color_buffers[i].dri_image = NULL;
 289       dri2_surf->color_buffers[i].linear_copy = NULL;
 290       dri2_surf->color_buffers[i].data = NULL;
 291       dri2_surf->color_buffers[i].locked = 0;
 292    }
 293
 294    if (dri2_dpy->dri2) {
 295       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 296          if (dri2_surf->dri_buffers[i] &&
 297              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 298             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 299                                           dri2_surf->dri_buffers[i]);
 300    }
 301 }
 302
 303 static int
 304 get_back_bo(struct dri2_egl_surface *dri2_surf)
 305 {
 306    struct dri2_egl_display *dri2_dpy =
 307       dri2_egl_display(dri2_surf->base.Resource.Display);
 308    int i, use_flags;
 309    unsigned int dri_image_format;
 310
 311    /* currently supports three WL DRM formats,
 312     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 313     * and WL_DRM_FORMAT_RGB565
 314     */
 315    switch (dri2_surf->format) {
 316    case WL_DRM_FORMAT_ARGB8888:
 317       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 318       break;
 319    case WL_DRM_FORMAT_XRGB8888:
 320       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 321       break;
 322    case WL_DRM_FORMAT_RGB565:
 323       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 324       break;
 325    default:
 326       /* format is not supported */
 327       return -1;
 328    }
 329
 330    /* We always want to throttle to some event (either a frame callback or
 331     * a sync request) after the commit so that we can be sure the
 332     * compositor has had a chance to handle it and send us a release event
 333     * before we look for a free buffer */
 334    while (dri2_surf->throttle_callback != NULL)
 335       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 336                                     dri2_dpy->wl_queue) == -1)
 337          return -1;
 338
 339    if (dri2_surf->back == NULL) {
 340       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 341          /* Get an unlocked buffer, preferrably one with a dri_buffer
 342           * already allocated. */
 343          if (dri2_surf->color_buffers[i].locked)
 344             continue;
 345          if (dri2_surf->back == NULL)
 346             dri2_surf->back = &dri2_surf->color_buffers[i];
 347          else if (dri2_surf->back->dri_image == NULL)
 348             dri2_surf->back = &dri2_surf->color_buffers[i];
 349       }
 350    }
 351
 352    if (dri2_surf->back == NULL)
 353       return -1;
 354
 355    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 356
 357    if (dri2_dpy->is_different_gpu &&
 358        dri2_surf->back->linear_copy == NULL) {
 359        dri2_surf->back->linear_copy =
 360           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 361                                       dri2_surf->base.Width,
 362                                       dri2_surf->base.Height,
 363                                       dri_image_format,
 364                                       use_flags |
 365                                       __DRI_IMAGE_USE_LINEAR,
 366                                       NULL);
 367       if (dri2_surf->back->linear_copy == NULL)
 368           return -1;
 369    }
 370
 371    if (dri2_surf->back->dri_image == NULL) {
 372       dri2_surf->back->dri_image =
 373          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 374                                       dri2_surf->base.Width,
 375                                       dri2_surf->base.Height,
 376                                       dri_image_format,
 377                                       dri2_dpy->is_different_gpu ?
 378                                          0 : use_flags,
 379                                       NULL);
 380       dri2_surf->back->age = 0;
 381    }
 382    if (dri2_surf->back->dri_image == NULL)
 383       return -1;
 384
 385    dri2_surf->back->locked = 1;
 386
 387    return 0;
 388 }
 389
 390
 391 static void
 392 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 393 {
 394    struct dri2_egl_display *dri2_dpy =
 395       dri2_egl_display(dri2_surf->base.Resource.Display);
 396    __DRIimage *image;
 397    int name, pitch;
 398
 399    image = dri2_surf->back->dri_image;
 400
 401    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 402    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 403
 404    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 405    buffer->name = name;
 406    buffer->pitch = pitch;
 407    buffer->cpp = 4;
 408    buffer->flags = 0;
 409 }
 410
 411 static int
 412 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 413            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 414 {
 415    struct dri2_egl_display *dri2_dpy =
 416       dri2_egl_display(dri2_surf->base.Resource.Display);
 417    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 418
 419    if (b == NULL) {
 420       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 421                                          attachment, format,
 422                                          dri2_surf->base.Width,
 423                                          dri2_surf->base.Height);
 424       dri2_surf->dri_buffers[attachment] = b;
 425    }
 426    if (b == NULL)
 427       return -1;
 428
 429    memcpy(buffer, b, sizeof *buffer);
 430
 431    return 0;
 432 }
 433
 434 static int
 435 update_buffers(struct dri2_egl_surface *dri2_surf)
 436 {
 437    struct dri2_egl_display *dri2_dpy =
 438       dri2_egl_display(dri2_surf->base.Resource.Display);
 439    int i;
 440
 441    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 442        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 443
 444       dri2_wl_release_buffers(dri2_surf);
 445
 446       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 447       dri2_surf->base.Height = dri2_surf->wl_win->height;
 448       dri2_surf->dx = dri2_surf->wl_win->dx;
 449       dri2_surf->dy = dri2_surf->wl_win->dy;
 450    }
 451
 452    if (get_back_bo(dri2_surf) < 0) {
 453       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 454       return -1;
 455    }
 456
 457    /* If we have an extra unlocked buffer at this point, we had to do triple
 458     * buffering for a while, but now can go back to just double buffering.
 459     * That means we can free any unlocked buffer now. */
 460    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 461       if (!dri2_surf->color_buffers[i].locked &&
 462           dri2_surf->color_buffers[i].wl_buffer) {
 463          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 464          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 465          if (dri2_dpy->is_different_gpu)
 466             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 467          dri2_surf->color_buffers[i].wl_buffer = NULL;
 468          dri2_surf->color_buffers[i].dri_image = NULL;
 469          dri2_surf->color_buffers[i].linear_copy = NULL;
 470       }
 471    }
 472
 473    return 0;
 474 }
 475
 476 static __DRIbuffer *
 477 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 478                                 int *width, int *height,
 479                                 unsigned int *attachments, int count,
 480                                 int *out_count, void *loaderPrivate)
 481 {
 482    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 483    int i, j;
 484
 485    if (update_buffers(dri2_surf) < 0)
 486       return NULL;
 487
 488    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 489       switch (attachments[i]) {
 490       case __DRI_BUFFER_BACK_LEFT:
 491          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 492          break;
 493       default:
 494          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 495                         &dri2_surf->buffers[j]) < 0) {
 496             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 497             return NULL;
 498          }
 499          break;
 500       }
 501    }
 502
 503    *out_count = j;
 504    if (j == 0)
 505            return NULL;
 506
 507    *width = dri2_surf->base.Width;
 508    *height = dri2_surf->base.Height;
 509
 510    return dri2_surf->buffers;
 511 }
 512
 513 static __DRIbuffer *
 514 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 515                     int *width, int *height,
 516                     unsigned int *attachments, int count,
 517                     int *out_count, void *loaderPrivate)
 518 {
 519    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 520    unsigned int *attachments_with_format;
 521    __DRIbuffer *buffer;
 522    unsigned int bpp;
 523
 524    int i;
 525
 526    switch (dri2_surf->format) {
 527    case WL_DRM_FORMAT_ARGB8888:
 528    case WL_DRM_FORMAT_XRGB8888:
 529       bpp = 32;
 530       break;
 531    case WL_DRM_FORMAT_RGB565:
 532       bpp = 16;
 533       break;
 534    default:
 535       /* format is not supported */
 536       return NULL;
 537    }
 538
 539    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 540    if (!attachments_with_format) {
 541       *out_count = 0;
 542       return NULL;
 543    }
 544
 545    for (i = 0; i < count; ++i) {
 546       attachments_with_format[2*i] = attachments[i];
 547       attachments_with_format[2*i + 1] = bpp;
 548    }
 549
 550    buffer =
 551       dri2_wl_get_buffers_with_format(driDrawable,
 552                                       width, height,
 553                                       attachments_with_format, count,
 554                                       out_count, loaderPrivate);
 555
 556    free(attachments_with_format);
 557
 558    return buffer;
 559 }
 560
 561 static int
 562 image_get_buffers(__DRIdrawable *driDrawable,
 563                   unsigned int format,
 564                   uint32_t *stamp,
 565                   void *loaderPrivate,
 566                   uint32_t buffer_mask,
 567                   struct __DRIimageList *buffers)
 568 {
 569    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 570
 571    if (update_buffers(dri2_surf) < 0)
 572       return 0;
 573
 574    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 575    buffers->back = dri2_surf->back->dri_image;
 576
 577    return 1;
 578 }
 579
 580 static void
 581 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 582 {
 583    (void) driDrawable;
 584    (void) loaderPrivate;
 585 }
 586
 587 static const __DRIimageLoaderExtension image_loader_extension = {
 588    .base = { __DRI_IMAGE_LOADER, 1 },
 589
 590    .getBuffers          = image_get_buffers,
 591    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 592 };
 593
 594 static void
 595 wayland_throttle_callback(void *data,
 596                           struct wl_callback *callback,
 597                           uint32_t time)
 598 {
 599    struct dri2_egl_surface *dri2_surf = data;
 600
 601    dri2_surf->throttle_callback = NULL;
 602    wl_callback_destroy(callback);
 603 }
 604
 605 static const struct wl_callback_listener throttle_listener = {
 606    .done = wayland_throttle_callback
 607 };
 608
 609 static void
 610 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 611 {
 612    struct dri2_egl_display *dri2_dpy =
 613       dri2_egl_display(dri2_surf->base.Resource.Display);
 614    __DRIimage *image;
 615    int fd, stride, name;
 616
 617    if (dri2_surf->current->wl_buffer != NULL)
 618       return;
 619
 620    if (dri2_dpy->is_different_gpu) {
 621       image = dri2_surf->current->linear_copy;
 622    } else {
 623       image = dri2_surf->current->dri_image;
 624    }
 625    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 626       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 627       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 628
 629       dri2_surf->current->wl_buffer =
 630          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 631                                     fd,
 632                                     dri2_surf->base.Width,
 633                                     dri2_surf->base.Height,
 634                                     dri2_surf->format,
 635                                     0, stride,
 636                                     0, 0,
 637                                     0, 0);
 638       close(fd);
 639    } else {
 640       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 641       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 642
 643       dri2_surf->current->wl_buffer =
 644          wl_drm_create_buffer(dri2_dpy->wl_drm,
 645                               name,
 646                               dri2_surf->base.Width,
 647                               dri2_surf->base.Height,
 648                               stride,
 649                               dri2_surf->format);
 650    }
 651
 652    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 653                       dri2_dpy->wl_queue);
 654    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 655                           &wl_buffer_listener, dri2_surf);
 656 }
 657
 658 static EGLBoolean
 659 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 660                   const EGLint *rects,
 661                   EGLint n_rects)
 662 {
 663 /* The WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION macro and
 664  * wl_proxy_get_version() were both introduced in wayland 1.10.
 665  * Instead of bumping our wayland dependency we just make this
 666  * function conditional on the required 1.10 features, falling
 667  * back to old (correct but suboptimal) behaviour for older
 668  * wayland.
 669  */
 670 #ifdef WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION
 671    int i;
 672
 673    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_win->surface)
 674        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 675       return EGL_FALSE;
 676
 677    for (i = 0; i < n_rects; i++) {
 678       const int *rect = &rects[i * 4];
 679
 680       wl_surface_damage_buffer(dri2_surf->wl_win->surface,
 681                                rect[0],
 682                                dri2_surf->base.Height - rect[1] - rect[3],
 683                                rect[2], rect[3]);
 684    }
 685    return EGL_TRUE;
 686 #endif
 687    return EGL_FALSE;
 688 }
 689 /**
 690  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 691  */
 692 static EGLBoolean
 693 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 694                                  _EGLDisplay *disp,
 695                                  _EGLSurface *draw,
 696                                  const EGLint *rects,
 697                                  EGLint n_rects)
 698 {
 699    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 700    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 701    int i;
 702
 703    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 704       if (dri2_surf->color_buffers[i].age > 0)
 705          dri2_surf->color_buffers[i].age++;
 706
 707    /* Make sure we have a back buffer in case we're swapping without ever
 708     * rendering. */
 709    if (get_back_bo(dri2_surf) < 0) {
 710       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 711       return EGL_FALSE;
 712    }
 713
 714    if (draw->SwapInterval > 0) {
 715       dri2_surf->throttle_callback =
 716          wl_surface_frame(dri2_surf->wl_win->surface);
 717       wl_callback_add_listener(dri2_surf->throttle_callback,
 718                                &throttle_listener, dri2_surf);
 719       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 720                          dri2_dpy->wl_queue);
 721    }
 722
 723    dri2_surf->back->age = 1;
 724    dri2_surf->current = dri2_surf->back;
 725    dri2_surf->back = NULL;
 726
 727    create_wl_buffer(dri2_surf);
 728
 729    wl_surface_attach(dri2_surf->wl_win->surface,
 730                      dri2_surf->current->wl_buffer,
 731                      dri2_surf->dx, dri2_surf->dy);
 732
 733    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 734    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 735    /* reset resize growing parameters */
 736    dri2_surf->dx = 0;
 737    dri2_surf->dy = 0;
 738
 739    /* If the compositor doesn't support damage_buffer, we deliberately
 740     * ignore the damage region and post maximum damage, due to
 741     * https://bugs.freedesktop.org/78190 */
 742    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 743       wl_surface_damage(dri2_surf->wl_win->surface,
 744                         0, 0, INT32_MAX, INT32_MAX);
 745
 746    if (dri2_dpy->is_different_gpu) {
 747       _EGLContext *ctx = _eglGetCurrentContext();
 748       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 749       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 750                                  dri2_surf->current->linear_copy,
 751                                  dri2_surf->current->dri_image,
 752                                  0, 0, dri2_surf->base.Width,
 753                                  dri2_surf->base.Height,
 754                                  0, 0, dri2_surf->base.Width,
 755                                  dri2_surf->base.Height, 0);
 756    }
 757
 758    dri2_flush_drawable_for_swapbuffers(disp, draw);
 759    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 760
 761    wl_surface_commit(dri2_surf->wl_win->surface);
 762
 763    /* If we're not waiting for a frame callback then we'll at least throttle
 764     * to a sync callback so that we always give a chance for the compositor to
 765     * handle the commit and send a release event before checking for a free
 766     * buffer */
 767    if (dri2_surf->throttle_callback == NULL) {
 768       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
 769       wl_callback_add_listener(dri2_surf->throttle_callback,
 770                                &throttle_listener, dri2_surf);
 771       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 772                          dri2_dpy->wl_queue);
 773    }
 774
 775    wl_display_flush(dri2_dpy->wl_dpy);
 776
 777    return EGL_TRUE;
 778 }
 779
 780 static EGLint
 781 dri2_wl_query_buffer_age(_EGLDriver *drv,
 782                          _EGLDisplay *disp, _EGLSurface *surface)
 783 {
 784    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 785
 786    if (get_back_bo(dri2_surf) < 0) {
 787       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 788       return 0;
 789    }
 790
 791    return dri2_surf->back->age;
 792 }
 793
 794 static EGLBoolean
 795 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 796 {
 797    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 798 }
 799
 800 static struct wl_buffer *
 801 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 802                                           _EGLDisplay *disp,
 803                                           _EGLImage *img)
 804 {
 805    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 806    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 807    __DRIimage *image = dri2_img->dri_image;
 808    struct wl_buffer *buffer;
 809    int width, height, format, pitch;
 810    enum wl_drm_format wl_format;
 811
 812    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 813
 814    switch (format) {
 815    case __DRI_IMAGE_FORMAT_ARGB8888:
 816       if (!(dri2_dpy->formats & HAS_ARGB8888))
 817          goto bad_format;
 818       wl_format = WL_DRM_FORMAT_ARGB8888;
 819       break;
 820    case __DRI_IMAGE_FORMAT_XRGB8888:
 821       if (!(dri2_dpy->formats & HAS_XRGB8888))
 822          goto bad_format;
 823       wl_format = WL_DRM_FORMAT_XRGB8888;
 824       break;
 825    default:
 826       goto bad_format;
 827    }
 828
 829    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 830    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 831    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 832
 833    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 834       int fd;
 835
 836       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 837
 838       buffer =
 839          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 840                                     fd,
 841                                     width, height,
 842                                     wl_format,
 843                                     0, pitch,
 844                                     0, 0,
 845                                     0, 0);
 846
 847       close(fd);
 848    } else {
 849       int name;
 850
 851       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 852
 853       buffer =
 854          wl_drm_create_buffer(dri2_dpy->wl_drm,
 855                               name,
 856                               width, height,
 857                               pitch,
 858                               wl_format);
 859    }
 860
 861    /* The buffer object will have been created with our internal event queue
 862     * because it is using the wl_drm object as a proxy factory. We want the
 863     * buffer to be used by the application so we'll reset it to the display's
 864     * default event queue */
 865    if (buffer)
 866       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 867
 868    return buffer;
 869
 870 bad_format:
 871    _eglError(EGL_BAD_MATCH, "unsupported image format");
 872    return NULL;
 873 }
 874
 875 static int
 876 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 877 {
 878    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 879    int ret = 0;
 880
 881    if (dri2_dpy->is_render_node) {
 882       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 883                             "authenticate for render-nodes");
 884       return 0;
 885    }
 886    dri2_dpy->authenticated = 0;
 887
 888    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 889    if (roundtrip(dri2_dpy) < 0)
 890       ret = -1;
 891
 892    if (!dri2_dpy->authenticated)
 893       ret = -1;
 894
 895    /* reset authenticated */
 896    dri2_dpy->authenticated = 1;
 897
 898    return ret;
 899 }
 900
 901 static void
 902 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 903 {
 904    struct dri2_egl_display *dri2_dpy = data;
 905    drm_magic_t magic;
 906
 907    dri2_dpy->device_name = strdup(device);
 908    if (!dri2_dpy->device_name)
 909       return;
 910
 911    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 912    if (dri2_dpy->fd == -1) {
 913       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 914               dri2_dpy->device_name, strerror(errno));
 915       return;
 916    }
 917
 918    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 919       dri2_dpy->authenticated = 1;
 920    } else {
 921       drmGetMagic(dri2_dpy->fd, &magic);
 922       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 923    }
 924 }
 925
 926 static void
 927 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 928 {
 929    struct dri2_egl_display *dri2_dpy = data;
 930
 931    switch (format) {
 932    case WL_DRM_FORMAT_ARGB8888:
 933       dri2_dpy->formats |= HAS_ARGB8888;
 934       break;
 935    case WL_DRM_FORMAT_XRGB8888:
 936       dri2_dpy->formats |= HAS_XRGB8888;
 937       break;
 938    case WL_DRM_FORMAT_RGB565:
 939       dri2_dpy->formats |= HAS_RGB565;
 940       break;
 941    }
 942 }
 943
 944 static void
 945 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 946 {
 947    struct dri2_egl_display *dri2_dpy = data;
 948
 949    dri2_dpy->capabilities = value;
 950 }
 951
 952 static void
 953 drm_handle_authenticated(void *data, struct wl_drm *drm)
 954 {
 955    struct dri2_egl_display *dri2_dpy = data;
 956
 957    dri2_dpy->authenticated = 1;
 958 }
 959
 960 static const struct wl_drm_listener drm_listener = {
 961    .device = drm_handle_device,
 962    .format = drm_handle_format,
 963    .authenticated = drm_handle_authenticated,
 964    .capabilities = drm_handle_capabilities
 965 };
 966
 967 static void
 968 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 969                        const char *interface, uint32_t version)
 970 {
 971    struct dri2_egl_display *dri2_dpy = data;
 972
 973    if (version > 1)
 974       version = 2;
 975    if (strcmp(interface, "wl_drm") == 0) {
 976       dri2_dpy->wl_drm =
 977          wl_registry_bind(registry, name, &wl_drm_interface, version);
 978       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 979    }
 980 }
 981
 982 static void
 983 registry_handle_global_remove(void *data, struct wl_registry *registry,
 984                               uint32_t name)
 985 {
 986 }
 987
 988 static const struct wl_registry_listener registry_listener_drm = {
 989    .global = registry_handle_global_drm,
 990    .global_remove = registry_handle_global_remove
 991 };
 992
 993 static EGLBoolean
 994 dri2_wl_swap_interval(_EGLDriver *drv,
 995                    _EGLDisplay *disp,
 996                    _EGLSurface *surf,
 997                    EGLint interval)
 998 {
 999    if (interval > surf->Config->MaxSwapInterval)
1000       interval = surf->Config->MaxSwapInterval;
1001    else if (interval < surf->Config->MinSwapInterval)
1002       interval = surf->Config->MinSwapInterval;
1003
1004    surf->SwapInterval = interval;
1005
1006    return EGL_TRUE;
1007 }
1008
1009 static void
1010 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1011 {
1012    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1013
1014    /* We can't use values greater than 1 on Wayland because we are using the
1015     * frame callback to synchronise the frame and the only way we be sure to
1016     * get a frame callback is to attach a new buffer. Therefore we can't just
1017     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1018
1019    if (dri2_dpy->config)
1020       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1021                                      "vblank_mode", &vblank_mode);
1022    switch (vblank_mode) {
1023    case DRI_CONF_VBLANK_NEVER:
1024       dri2_dpy->min_swap_interval = 0;
1025       dri2_dpy->max_swap_interval = 0;
1026       dri2_dpy->default_swap_interval = 0;
1027       break;
1028    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1029       dri2_dpy->min_swap_interval = 1;
1030       dri2_dpy->max_swap_interval = 1;
1031       dri2_dpy->default_swap_interval = 1;
1032       break;
1033    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1034       dri2_dpy->min_swap_interval = 0;
1035       dri2_dpy->max_swap_interval = 1;
1036       dri2_dpy->default_swap_interval = 0;
1037       break;
1038    default:
1039    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1040       dri2_dpy->min_swap_interval = 0;
1041       dri2_dpy->max_swap_interval = 1;
1042       dri2_dpy->default_swap_interval = 1;
1043       break;
1044    }
1045 }
1046
1047 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1048    .authenticate = dri2_wl_authenticate,
1049    .create_window_surface = dri2_wl_create_window_surface,
1050    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1051    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1052    .destroy_surface = dri2_wl_destroy_surface,
1053    .create_image = dri2_create_image_khr,
1054    .swap_interval = dri2_wl_swap_interval,
1055    .swap_buffers = dri2_wl_swap_buffers,
1056    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1057    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1058    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1059    .copy_buffers = dri2_fallback_copy_buffers,
1060    .query_buffer_age = dri2_wl_query_buffer_age,
1061    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1062    .get_sync_values = dri2_fallback_get_sync_values,
1063    .get_dri_drawable = dri2_surface_get_dri_drawable,
1064 };
1065
1066 static EGLBoolean
1067 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1068 {
1069    struct dri2_egl_display *dri2_dpy;
1070    const __DRIconfig *config;
1071    uint32_t types;
1072    int i;
1073    static const unsigned int argb_masks[4] =
1074       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1075    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1076    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1077
1078    loader_set_logger(_eglLog);
1079
1080    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1081    if (!dri2_dpy)
1082       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1083
1084    disp->DriverData = (void *) dri2_dpy;
1085    if (disp->PlatformDisplay == NULL) {
1086       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1087       if (dri2_dpy->wl_dpy == NULL)
1088          goto cleanup_dpy;
1089       dri2_dpy->own_device = 1;
1090    } else {
1091       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1092    }
1093
1094    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1095
1096    if (dri2_dpy->own_device)
1097       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1098
1099    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1100    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1101                       dri2_dpy->wl_queue);
1102    wl_registry_add_listener(dri2_dpy->wl_registry,
1103                             &registry_listener_drm, dri2_dpy);
1104    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1105       goto cleanup_registry;
1106
1107    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1108       goto cleanup_drm;
1109
1110    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1111       goto cleanup_fd;
1112
1113    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1114                                                &dri2_dpy->is_different_gpu);
1115    if (dri2_dpy->is_different_gpu) {
1116       free(dri2_dpy->device_name);
1117       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1118       if (!dri2_dpy->device_name) {
1119          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1120                                   "for requested GPU");
1121          goto cleanup_fd;
1122       }
1123    }
1124
1125    /* we have to do the check now, because loader_get_user_preferred_fd
1126     * will return a render-node when the requested gpu is different
1127     * to the server, but also if the client asks for the same gpu than
1128     * the server by requesting its pci-id */
1129    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1130
1131    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
1132    if (dri2_dpy->driver_name == NULL) {
1133       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1134       goto cleanup_fd;
1135    }
1136
1137    if (!dri2_load_driver(disp))
1138       goto cleanup_driver_name;
1139
1140    dri2_dpy->extensions[0] = &image_loader_extension.base;
1141    dri2_dpy->extensions[1] = &image_lookup_extension.base;
1142    dri2_dpy->extensions[2] = &use_invalidate.base;
1143
1144    /* render nodes cannot use Gem names, and thus do not support
1145     * the __DRI_DRI2_LOADER extension */
1146    if (!dri2_dpy->is_render_node) {
1147       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1148       dri2_dpy->dri2_loader_extension.base.version = 3;
1149       dri2_dpy->dri2_loader_extension.getBuffers = dri2_wl_get_buffers;
1150       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_wl_flush_front_buffer;
1151       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1152          dri2_wl_get_buffers_with_format;
1153       dri2_dpy->extensions[3] = &dri2_dpy->dri2_loader_extension.base;
1154       dri2_dpy->extensions[4] = NULL;
1155    } else
1156       dri2_dpy->extensions[3] = NULL;
1157
1158    dri2_dpy->swap_available = EGL_TRUE;
1159
1160    if (!dri2_create_screen(disp))
1161       goto cleanup_driver;
1162
1163    dri2_wl_setup_swap_interval(dri2_dpy);
1164
1165    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1166     * createImageFromFds support indicates that Prime export/import
1167     * is supported by the driver. Fall back to
1168     * gem names if we don't have Prime support. */
1169
1170    if (dri2_dpy->image->base.version < 7 ||
1171        dri2_dpy->image->createImageFromFds == NULL)
1172       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1173
1174    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1175     * The server needs to accept them */
1176    if (dri2_dpy->is_render_node &&
1177        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1178       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1179       goto cleanup_screen;
1180    }
1181
1182    if (dri2_dpy->is_different_gpu &&
1183        (dri2_dpy->image->base.version < 9 ||
1184         dri2_dpy->image->blitImage == NULL)) {
1185       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1186                             "Image extension in the driver is not "
1187                             "compatible. Version 9 or later and blitImage() "
1188                             "are required");
1189       goto cleanup_screen;
1190    }
1191
1192    types = EGL_WINDOW_BIT;
1193    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1194       config = dri2_dpy->driver_configs[i];
1195       if (dri2_dpy->formats & HAS_XRGB8888)
1196          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1197       if (dri2_dpy->formats & HAS_ARGB8888)
1198          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1199       if (dri2_dpy->formats & HAS_RGB565)
1200         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1201    }
1202
1203    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1204    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1205     * because the buffer of the EGLImage has likely a tiling mode the server
1206     * gpu won't support. These is no way to check for now. Thus do not support the
1207     * extension */
1208    if (!dri2_dpy->is_different_gpu) {
1209       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1210    } else {
1211       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1212          dri2_fallback_create_wayland_buffer_from_image;
1213    }
1214    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1215
1216    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1217
1218    /* Fill vtbl last to prevent accidentally calling virtual function during
1219     * initialization.
1220     */
1221    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1222
1223    return EGL_TRUE;
1224
1225  cleanup_screen:
1226    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1227  cleanup_driver:
1228    dlclose(dri2_dpy->driver);
1229  cleanup_driver_name:
1230    free(dri2_dpy->driver_name);
1231  cleanup_fd:
1232    close(dri2_dpy->fd);
1233  cleanup_drm:
1234    free(dri2_dpy->device_name);
1235    wl_drm_destroy(dri2_dpy->wl_drm);
1236  cleanup_registry:
1237    wl_registry_destroy(dri2_dpy->wl_registry);
1238    wl_event_queue_destroy(dri2_dpy->wl_queue);
1239  cleanup_dpy:
1240    free(dri2_dpy);
1241
1242    return EGL_FALSE;
1243 }
1244
1245 static int
1246 dri2_wl_swrast_get_stride_for_format(int format, int w)
1247 {
1248    if (format == WL_SHM_FORMAT_RGB565)
1249       return 2 * w;
1250    else /* ARGB8888 || XRGB8888 */
1251       return 4 * w;
1252 }
1253
1254 /*
1255  * Taken from weston shared/os-compatibility.c
1256  */
1257
1258 #ifndef HAVE_MKOSTEMP
1259
1260 static int
1261 set_cloexec_or_close(int fd)
1262 {
1263    long flags;
1264
1265    if (fd == -1)
1266       return -1;
1267
1268    flags = fcntl(fd, F_GETFD);
1269    if (flags == -1)
1270       goto err;
1271
1272    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1273       goto err;
1274
1275    return fd;
1276
1277 err:
1278    close(fd);
1279    return -1;
1280 }
1281
1282 #endif
1283
1284 /*
1285  * Taken from weston shared/os-compatibility.c
1286  */
1287
1288 static int
1289 create_tmpfile_cloexec(char *tmpname)
1290 {
1291    int fd;
1292
1293 #ifdef HAVE_MKOSTEMP
1294    fd = mkostemp(tmpname, O_CLOEXEC);
1295    if (fd >= 0)
1296       unlink(tmpname);
1297 #else
1298    fd = mkstemp(tmpname);
1299    if (fd >= 0) {
1300       fd = set_cloexec_or_close(fd);
1301       unlink(tmpname);
1302    }
1303 #endif
1304
1305    return fd;
1306 }
1307
1308 /*
1309  * Taken from weston shared/os-compatibility.c
1310  *
1311  * Create a new, unique, anonymous file of the given size, and
1312  * return the file descriptor for it. The file descriptor is set
1313  * CLOEXEC. The file is immediately suitable for mmap()'ing
1314  * the given size at offset zero.
1315  *
1316  * The file should not have a permanent backing store like a disk,
1317  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1318  *
1319  * The file name is deleted from the file system.
1320  *
1321  * The file is suitable for buffer sharing between processes by
1322  * transmitting the file descriptor over Unix sockets using the
1323  * SCM_RIGHTS methods.
1324  *
1325  * If the C library implements posix_fallocate(), it is used to
1326  * guarantee that disk space is available for the file at the
1327  * given size. If disk space is insufficent, errno is set to ENOSPC.
1328  * If posix_fallocate() is not supported, program may receive
1329  * SIGBUS on accessing mmap()'ed file contents instead.
1330  */
1331 static int
1332 os_create_anonymous_file(off_t size)
1333 {
1334    static const char template[] = "/mesa-shared-XXXXXX";
1335    const char *path;
1336    char *name;
1337    int fd;
1338    int ret;
1339
1340    path = getenv("XDG_RUNTIME_DIR");
1341    if (!path) {
1342       errno = ENOENT;
1343       return -1;
1344    }
1345
1346    name = malloc(strlen(path) + sizeof(template));
1347    if (!name)
1348       return -1;
1349
1350    strcpy(name, path);
1351    strcat(name, template);
1352
1353    fd = create_tmpfile_cloexec(name);
1354
1355    free(name);
1356
1357    if (fd < 0)
1358       return -1;
1359
1360    ret = ftruncate(fd, size);
1361    if (ret < 0) {
1362       close(fd);
1363       return -1;
1364    }
1365
1366    return fd;
1367 }
1368
1369
1370 static EGLBoolean
1371 dri2_wl_swrast_allocate_buffer(struct dri2_egl_display *dri2_dpy,
1372                                int format, int w, int h,
1373                                void **data, int *size,
1374                                struct wl_buffer **buffer)
1375 {
1376    struct wl_shm_pool *pool;
1377    int fd, stride, size_map;
1378    void *data_map;
1379
1380    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1381    size_map = h * stride;
1382
1383    /* Create a sharable buffer */
1384    fd = os_create_anonymous_file(size_map);
1385    if (fd < 0)
1386       return EGL_FALSE;
1387
1388    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1389    if (data_map == MAP_FAILED) {
1390       close(fd);
1391       return EGL_FALSE;
1392    }
1393
1394    /* Share it in a wl_buffer */
1395    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1396    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1397    wl_shm_pool_destroy(pool);
1398    close(fd);
1399
1400    *data = data_map;
1401    *size = size_map;
1402    return EGL_TRUE;
1403 }
1404
1405 static int
1406 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1407 {
1408    struct dri2_egl_display *dri2_dpy =
1409       dri2_egl_display(dri2_surf->base.Resource.Display);
1410    int i;
1411
1412    /* we need to do the following operations only once per frame */
1413    if (dri2_surf->back)
1414       return 0;
1415
1416    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1417        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1418
1419       dri2_wl_release_buffers(dri2_surf);
1420
1421       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1422       dri2_surf->base.Height = dri2_surf->wl_win->height;
1423       dri2_surf->dx = dri2_surf->wl_win->dx;
1424       dri2_surf->dy = dri2_surf->wl_win->dy;
1425       dri2_surf->current = NULL;
1426    }
1427
1428    /* find back buffer */
1429
1430    /* We always want to throttle to some event (either a frame callback or
1431     * a sync request) after the commit so that we can be sure the
1432     * compositor has had a chance to handle it and send us a release event
1433     * before we look for a free buffer */
1434    while (dri2_surf->throttle_callback != NULL)
1435       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1436                                     dri2_dpy->wl_queue) == -1)
1437          return -1;
1438
1439    /* try get free buffer already created */
1440    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1441       if (!dri2_surf->color_buffers[i].locked &&
1442           dri2_surf->color_buffers[i].wl_buffer) {
1443           dri2_surf->back = &dri2_surf->color_buffers[i];
1444           break;
1445       }
1446    }
1447
1448    /* else choose any another free location */
1449    if (!dri2_surf->back) {
1450       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1451          if (!dri2_surf->color_buffers[i].locked) {
1452              dri2_surf->back = &dri2_surf->color_buffers[i];
1453              if (!dri2_wl_swrast_allocate_buffer(dri2_dpy,
1454                                                  dri2_surf->format,
1455                                                  dri2_surf->base.Width,
1456                                                  dri2_surf->base.Height,
1457                                                  &dri2_surf->back->data,
1458                                                  &dri2_surf->back->data_size,
1459                                                  &dri2_surf->back->wl_buffer)) {
1460                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1461                  return -1;
1462              }
1463              wl_proxy_set_queue((struct wl_proxy *) dri2_surf->back->wl_buffer,
1464                                 dri2_dpy->wl_queue);
1465              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1466                                     &wl_buffer_listener, dri2_surf);
1467              break;
1468          }
1469       }
1470    }
1471
1472    if (!dri2_surf->back) {
1473       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1474       return -1;
1475    }
1476
1477    dri2_surf->back->locked = 1;
1478
1479    /* If we have an extra unlocked buffer at this point, we had to do triple
1480     * buffering for a while, but now can go back to just double buffering.
1481     * That means we can free any unlocked buffer now. */
1482    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1483       if (!dri2_surf->color_buffers[i].locked &&
1484           dri2_surf->color_buffers[i].wl_buffer) {
1485          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1486          munmap(dri2_surf->color_buffers[i].data,
1487                 dri2_surf->color_buffers[i].data_size);
1488          dri2_surf->color_buffers[i].wl_buffer = NULL;
1489          dri2_surf->color_buffers[i].data = NULL;
1490       }
1491    }
1492
1493    return 0;
1494 }
1495
1496 static void*
1497 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1498 {
1499    /* if there has been a resize: */
1500    if (!dri2_surf->current)
1501       return NULL;
1502
1503    return dri2_surf->current->data;
1504 }
1505
1506 static void*
1507 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1508 {
1509    assert(dri2_surf->back);
1510    return dri2_surf->back->data;
1511 }
1512
1513 static void
1514 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1515 {
1516    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1517
1518    if (dri2_surf->base.SwapInterval > 0) {
1519       dri2_surf->throttle_callback =
1520          wl_surface_frame(dri2_surf->wl_win->surface);
1521       wl_callback_add_listener(dri2_surf->throttle_callback,
1522                                &throttle_listener, dri2_surf);
1523       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1524                          dri2_dpy->wl_queue);
1525    }
1526
1527    dri2_surf->current = dri2_surf->back;
1528    dri2_surf->back = NULL;
1529
1530    wl_surface_attach(dri2_surf->wl_win->surface,
1531                      dri2_surf->current->wl_buffer,
1532                      dri2_surf->dx, dri2_surf->dy);
1533
1534    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1535    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1536    /* reset resize growing parameters */
1537    dri2_surf->dx = 0;
1538    dri2_surf->dy = 0;
1539
1540    wl_surface_damage(dri2_surf->wl_win->surface,
1541                      0, 0, INT32_MAX, INT32_MAX);
1542    wl_surface_commit(dri2_surf->wl_win->surface);
1543
1544    /* If we're not waiting for a frame callback then we'll at least throttle
1545     * to a sync callback so that we always give a chance for the compositor to
1546     * handle the commit and send a release event before checking for a free
1547     * buffer */
1548    if (dri2_surf->throttle_callback == NULL) {
1549       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
1550       wl_callback_add_listener(dri2_surf->throttle_callback,
1551                                &throttle_listener, dri2_surf);
1552       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1553                          dri2_dpy->wl_queue);
1554    }
1555
1556    wl_display_flush(dri2_dpy->wl_dpy);
1557 }
1558
1559 static void
1560 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1561                                  int *x, int *y, int *w, int *h,
1562                                  void *loaderPrivate)
1563 {
1564    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1565
1566    (void) swrast_update_buffers(dri2_surf);
1567    *x = 0;
1568    *y = 0;
1569    *w = dri2_surf->base.Width;
1570    *h = dri2_surf->base.Height;
1571 }
1572
1573 static void
1574 dri2_wl_swrast_get_image(__DRIdrawable * read,
1575                          int x, int y, int w, int h,
1576                          char *data, void *loaderPrivate)
1577 {
1578    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1579    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1580    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1581    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1582    int dst_stride = copy_width;
1583    char *src, *dst;
1584
1585    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1586    if (!src) {
1587       memset(data, 0, copy_width * h);
1588       return;
1589    }
1590
1591    assert(data != src);
1592    assert(copy_width <= src_stride);
1593
1594    src += x_offset;
1595    src += y * src_stride;
1596    dst = data;
1597
1598    if (copy_width > src_stride-x_offset)
1599       copy_width = src_stride-x_offset;
1600    if (h > dri2_surf->base.Height-y)
1601       h = dri2_surf->base.Height-y;
1602
1603    for (; h>0; h--) {
1604       memcpy(dst, src, copy_width);
1605       src += src_stride;
1606       dst += dst_stride;
1607    }
1608 }
1609
1610 static void
1611 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1612                          int x, int y, int w, int h, int stride,
1613                          char *data, void *loaderPrivate)
1614 {
1615    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1616    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1617    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1618    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1619    char *src, *dst;
1620
1621    assert(copy_width <= stride);
1622
1623    (void) swrast_update_buffers(dri2_surf);
1624    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1625
1626    /* partial copy, copy old content */
1627    if (copy_width < dst_stride)
1628       dri2_wl_swrast_get_image(draw, 0, 0,
1629                                dri2_surf->base.Width, dri2_surf->base.Height,
1630                                dst, loaderPrivate);
1631
1632    dst += x_offset;
1633    dst += y * dst_stride;
1634
1635    src = data;
1636
1637    /* drivers expect we do these checks (and some rely on it) */
1638    if (copy_width > dst_stride-x_offset)
1639       copy_width = dst_stride-x_offset;
1640    if (h > dri2_surf->base.Height-y)
1641       h = dri2_surf->base.Height-y;
1642
1643    for (; h>0; h--) {
1644       memcpy(dst, src, copy_width);
1645       src += stride;
1646       dst += dst_stride;
1647    }
1648    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1649 }
1650
1651 static void
1652 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1653                          int x, int y, int w, int h,
1654                          char *data, void *loaderPrivate)
1655 {
1656    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1657    int stride;
1658
1659    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1660    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1661                              stride, data, loaderPrivate);
1662 }
1663
1664 /**
1665  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
1666  */
1667 static _EGLSurface *
1668 dri2_wl_swrast_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
1669                                      _EGLConfig *conf, void *native_window,
1670                                      const EGLint *attrib_list)
1671 {
1672    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1673    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
1674    struct wl_egl_window *window = native_window;
1675    struct dri2_egl_surface *dri2_surf;
1676    const __DRIconfig *config;
1677
1678    (void) drv;
1679
1680    dri2_surf = calloc(1, sizeof *dri2_surf);
1681    if (!dri2_surf) {
1682       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
1683       return NULL;
1684    }
1685
1686    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
1687       goto cleanup_surf;
1688
1689    if (conf->RedSize == 5)
1690       dri2_surf->format = WL_SHM_FORMAT_RGB565;
1691    else if (conf->AlphaSize == 0)
1692       dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
1693    else
1694       dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
1695
1696    dri2_surf->wl_win = window;
1697
1698    dri2_surf->base.Width = -1;
1699    dri2_surf->base.Height = -1;
1700
1701    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
1702                                 dri2_surf->base.GLColorspace);
1703
1704    dri2_surf->dri_drawable =
1705       (*dri2_dpy->swrast->createNewDrawable)(dri2_dpy->dri_screen,
1706                                              config, dri2_surf);
1707    if (dri2_surf->dri_drawable == NULL) {
1708       _eglError(EGL_BAD_ALLOC, "swrast->createNewDrawable");
1709       goto cleanup_dri_drawable;
1710    }
1711
1712    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
1713                          dri2_dpy->default_swap_interval);
1714
1715    return &dri2_surf->base;
1716
1717  cleanup_dri_drawable:
1718    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
1719  cleanup_surf:
1720    free(dri2_surf);
1721
1722    return NULL;
1723 }
1724
1725 static EGLBoolean
1726 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1727 {
1728    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1729    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1730
1731    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1732    return EGL_TRUE;
1733 }
1734
1735 static void
1736 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1737 {
1738    struct dri2_egl_display *dri2_dpy = data;
1739
1740    switch (format) {
1741    case WL_SHM_FORMAT_ARGB8888:
1742       dri2_dpy->formats |= HAS_ARGB8888;
1743       break;
1744    case WL_SHM_FORMAT_XRGB8888:
1745       dri2_dpy->formats |= HAS_XRGB8888;
1746       break;
1747    case WL_SHM_FORMAT_RGB565:
1748       dri2_dpy->formats |= HAS_RGB565;
1749       break;
1750    }
1751 }
1752
1753 static const struct wl_shm_listener shm_listener = {
1754    .format = shm_handle_format
1755 };
1756
1757 static void
1758 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1759                               const char *interface, uint32_t version)
1760 {
1761    struct dri2_egl_display *dri2_dpy = data;
1762
1763    if (strcmp(interface, "wl_shm") == 0) {
1764       dri2_dpy->wl_shm =
1765          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1766       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1767    }
1768 }
1769
1770 static const struct wl_registry_listener registry_listener_swrast = {
1771    .global = registry_handle_global_swrast,
1772    .global_remove = registry_handle_global_remove
1773 };
1774
1775 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1776    .authenticate = NULL,
1777    .create_window_surface = dri2_wl_swrast_create_window_surface,
1778    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1779    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1780    .destroy_surface = dri2_wl_destroy_surface,
1781    .create_image = dri2_fallback_create_image_khr,
1782    .swap_interval = dri2_wl_swap_interval,
1783    .swap_buffers = dri2_wl_swrast_swap_buffers,
1784    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1785    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1786    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1787    .copy_buffers = dri2_fallback_copy_buffers,
1788    .query_buffer_age = dri2_fallback_query_buffer_age,
1789    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1790    .get_sync_values = dri2_fallback_get_sync_values,
1791    .get_dri_drawable = dri2_surface_get_dri_drawable,
1792 };
1793
1794 static EGLBoolean
1795 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1796 {
1797    struct dri2_egl_display *dri2_dpy;
1798    const __DRIconfig *config;
1799    uint32_t types;
1800    int i;
1801    static const unsigned int argb_masks[4] =
1802       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1803    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1804    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1805
1806    loader_set_logger(_eglLog);
1807
1808    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1809    if (!dri2_dpy)
1810       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1811
1812    disp->DriverData = (void *) dri2_dpy;
1813    if (disp->PlatformDisplay == NULL) {
1814       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1815       if (dri2_dpy->wl_dpy == NULL)
1816          goto cleanup_dpy;
1817       dri2_dpy->own_device = 1;
1818    } else {
1819       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1820    }
1821
1822    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1823
1824    if (dri2_dpy->own_device)
1825       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1826
1827    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1828    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1829                       dri2_dpy->wl_queue);
1830    wl_registry_add_listener(dri2_dpy->wl_registry,
1831                             &registry_listener_swrast, dri2_dpy);
1832
1833    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1834       goto cleanup_registry;
1835
1836    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1837       goto cleanup_shm;
1838
1839    dri2_dpy->fd = -1;
1840    dri2_dpy->driver_name = strdup("swrast");
1841    if (!dri2_load_driver_swrast(disp))
1842       goto cleanup_shm;
1843
1844    dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
1845    dri2_dpy->swrast_loader_extension.base.version = 2;
1846    dri2_dpy->swrast_loader_extension.getDrawableInfo = dri2_wl_swrast_get_drawable_info;
1847    dri2_dpy->swrast_loader_extension.putImage = dri2_wl_swrast_put_image;
1848    dri2_dpy->swrast_loader_extension.getImage = dri2_wl_swrast_get_image;
1849    dri2_dpy->swrast_loader_extension.putImage2 = dri2_wl_swrast_put_image2;
1850
1851    dri2_dpy->extensions[0] = &dri2_dpy->swrast_loader_extension.base;
1852    dri2_dpy->extensions[1] = NULL;
1853
1854    if (!dri2_create_screen(disp))
1855       goto cleanup_driver;
1856
1857    dri2_wl_setup_swap_interval(dri2_dpy);
1858
1859    types = EGL_WINDOW_BIT;
1860    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1861       config = dri2_dpy->driver_configs[i];
1862       if (dri2_dpy->formats & HAS_XRGB8888)
1863          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1864       if (dri2_dpy->formats & HAS_ARGB8888)
1865          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1866       if (dri2_dpy->formats & HAS_RGB565)
1867         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1868    }
1869
1870    /* Fill vtbl last to prevent accidentally calling virtual function during
1871     * initialization.
1872     */
1873    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1874
1875    return EGL_TRUE;
1876
1877  cleanup_driver:
1878    dlclose(dri2_dpy->driver);
1879  cleanup_shm:
1880    wl_shm_destroy(dri2_dpy->wl_shm);
1881  cleanup_registry:
1882    wl_registry_destroy(dri2_dpy->wl_registry);
1883    wl_event_queue_destroy(dri2_dpy->wl_queue);
1884  cleanup_dpy:
1885    free(dri2_dpy);
1886
1887    return EGL_FALSE;
1888 }
1889
1890 EGLBoolean
1891 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1892 {
1893    EGLBoolean initialized = EGL_TRUE;
1894
1895    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1896
1897    if (hw_accel) {
1898       if (!dri2_initialize_wayland_drm(drv, disp)) {
1899          initialized = dri2_initialize_wayland_swrast(drv, disp);
1900       }
1901    } else {
1902       initialized = dri2_initialize_wayland_swrast(drv, disp);
1903    }
1904
1905    return initialized;
1906
1907 }