src/egl/drivers/dri2/platform_wayland.c

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