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 int
  59 roundtrip(struct dri2_egl_display *dri2_dpy)
  60 {
  61    return wl_display_roundtrip_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  62 }
  63
  64 static void
  65 wl_buffer_release(void *data, struct wl_buffer *buffer)
  66 {
  67    struct dri2_egl_surface *dri2_surf = data;
  68    int i;
  69
  70    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  71       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  72          break;
  73
  74    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
  75       wl_buffer_destroy(buffer);
  76       return;
  77    }
  78
  79    dri2_surf->color_buffers[i].locked = 0;
  80 }
  81
  82 static const struct wl_buffer_listener wl_buffer_listener = {
  83    .release = wl_buffer_release
  84 };
  85
  86 static void
  87 resize_callback(struct wl_egl_window *wl_win, void *data)
  88 {
  89    struct dri2_egl_surface *dri2_surf = data;
  90    struct dri2_egl_display *dri2_dpy =
  91       dri2_egl_display(dri2_surf->base.Resource.Display);
  92
  93    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
  94 }
  95
  96 static void
  97 destroy_window_callback(void *data)
  98 {
  99    struct dri2_egl_surface *dri2_surf = data;
 100    dri2_surf->wl_win = NULL;
 101 }
 102
 103 /**
 104  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 105  */
 106 static _EGLSurface *
 107 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 108                               _EGLConfig *conf, void *native_window,
 109                               const EGLint *attrib_list)
 110 {
 111    __DRIcreateNewDrawableFunc createNewDrawable;
 112    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 113    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 114    struct wl_egl_window *window = native_window;
 115    struct dri2_egl_surface *dri2_surf;
 116    const __DRIconfig *config;
 117
 118    dri2_surf = calloc(1, sizeof *dri2_surf);
 119    if (!dri2_surf) {
 120       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 121       return NULL;
 122    }
 123
 124    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 125       goto cleanup_surf;
 126
 127    if (dri2_dpy->dri2) {
 128       if (conf->RedSize == 5)
 129          dri2_surf->format = WL_DRM_FORMAT_RGB565;
 130       else if (conf->AlphaSize == 0)
 131          dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 132       else
 133          dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 134    } else {
 135       if (conf->RedSize == 5)
 136          dri2_surf->format = WL_SHM_FORMAT_RGB565;
 137       else if (conf->AlphaSize == 0)
 138          dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
 139       else
 140          dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
 141    }
 142
 143    if (!window) {
 144       _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 145       goto cleanup_surf;
 146    }
 147
 148    dri2_surf->wl_win = window;
 149    dri2_surf->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 150    if (!window) {
 151       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 152       goto cleanup_surf;
 153    }
 154
 155    if (dri2_dpy->wl_drm) {
 156       dri2_surf->wl_drm_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_drm);
 157       if (!dri2_surf->wl_drm_wrapper) {
 158          _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 159          goto cleanup_queue;
 160       }
 161       wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_drm_wrapper,
 162                          dri2_surf->wl_queue);
 163    }
 164
 165    dri2_surf->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
 166    if (!dri2_surf->wl_dpy_wrapper) {
 167       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 168       goto cleanup_drm;
 169    }
 170    wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_dpy_wrapper,
 171                       dri2_surf->wl_queue);
 172
 173    dri2_surf->wl_surface_wrapper = wl_proxy_create_wrapper(window->surface);
 174    if (!dri2_surf->wl_surface_wrapper) {
 175       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 176       goto cleanup_drm;
 177    }
 178    wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_surface_wrapper,
 179                       dri2_surf->wl_queue);
 180
 181    dri2_surf->wl_win->private = dri2_surf;
 182    dri2_surf->wl_win->destroy_window_callback = destroy_window_callback;
 183
 184    dri2_surf->base.Width =  -1;
 185    dri2_surf->base.Height = -1;
 186
 187    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 188                                 dri2_surf->base.GLColorspace);
 189
 190    if (dri2_dpy->dri2) {
 191       dri2_surf->wl_win->resize_callback = resize_callback;
 192
 193       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
 194    } else {
 195       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
 196    }
 197
 198    dri2_surf->dri_drawable = (*createNewDrawable)(dri2_dpy->dri_screen, config,
 199                                                   dri2_surf);
 200     if (dri2_surf->dri_drawable == NULL) {
 201       _eglError(EGL_BAD_ALLOC, "createNewDrawable");
 202        goto cleanup_surf;
 203     }
 204
 205    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
 206                          dri2_dpy->default_swap_interval);
 207
 208    return &dri2_surf->base;
 209
 210  cleanup_drm:
 211    if (dri2_surf->wl_drm_wrapper)
 212       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 213  cleanup_queue:
 214    wl_event_queue_destroy(dri2_surf->wl_queue);
 215  cleanup_surf:
 216    free(dri2_surf);
 217
 218    return NULL;
 219 }
 220
 221 static _EGLSurface *
 222 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 223                               _EGLConfig *conf, void *native_window,
 224                               const EGLint *attrib_list)
 225 {
 226    /* From the EGL_EXT_platform_wayland spec, version 3:
 227     *
 228     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 229     *   that belongs to Wayland. Any such call fails and generates
 230     *   EGL_BAD_PARAMETER.
 231     */
 232    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 233              "Wayland");
 234    return NULL;
 235 }
 236
 237 /**
 238  * Called via eglDestroySurface(), drv->API.DestroySurface().
 239  */
 240 static EGLBoolean
 241 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 242 {
 243    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 244    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 245    int i;
 246
 247    (void) drv;
 248
 249    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 250
 251    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 252       if (dri2_surf->color_buffers[i].wl_buffer)
 253          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 254       if (dri2_surf->color_buffers[i].dri_image)
 255          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 256       if (dri2_surf->color_buffers[i].linear_copy)
 257          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 258       if (dri2_surf->color_buffers[i].data)
 259          munmap(dri2_surf->color_buffers[i].data,
 260                 dri2_surf->color_buffers[i].data_size);
 261    }
 262
 263    if (dri2_dpy->dri2) {
 264       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 265          if (dri2_surf->dri_buffers[i] &&
 266              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 267             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 268                                           dri2_surf->dri_buffers[i]);
 269    }
 270
 271    if (dri2_surf->throttle_callback)
 272       wl_callback_destroy(dri2_surf->throttle_callback);
 273
 274    if (dri2_surf->wl_win) {
 275       dri2_surf->wl_win->private = NULL;
 276       dri2_surf->wl_win->resize_callback = NULL;
 277       dri2_surf->wl_win->destroy_window_callback = NULL;
 278    }
 279
 280    if (dri2_surf->wl_drm_wrapper)
 281       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 282    wl_proxy_wrapper_destroy(dri2_surf->wl_surface_wrapper);
 283    wl_proxy_wrapper_destroy(dri2_surf->wl_dpy_wrapper);
 284    wl_event_queue_destroy(dri2_surf->wl_queue);
 285
 286    free(surf);
 287
 288    return EGL_TRUE;
 289 }
 290
 291 static void
 292 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 293 {
 294    struct dri2_egl_display *dri2_dpy =
 295       dri2_egl_display(dri2_surf->base.Resource.Display);
 296    int i;
 297
 298    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 299       if (dri2_surf->color_buffers[i].wl_buffer &&
 300           !dri2_surf->color_buffers[i].locked)
 301          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 302       if (dri2_surf->color_buffers[i].dri_image)
 303          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 304       if (dri2_surf->color_buffers[i].linear_copy)
 305          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 306       if (dri2_surf->color_buffers[i].data)
 307          munmap(dri2_surf->color_buffers[i].data,
 308                 dri2_surf->color_buffers[i].data_size);
 309
 310       dri2_surf->color_buffers[i].wl_buffer = NULL;
 311       dri2_surf->color_buffers[i].dri_image = NULL;
 312       dri2_surf->color_buffers[i].linear_copy = NULL;
 313       dri2_surf->color_buffers[i].data = NULL;
 314       dri2_surf->color_buffers[i].locked = 0;
 315    }
 316
 317    if (dri2_dpy->dri2) {
 318       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 319          if (dri2_surf->dri_buffers[i] &&
 320              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 321             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 322                                           dri2_surf->dri_buffers[i]);
 323    }
 324 }
 325
 326 static int
 327 get_back_bo(struct dri2_egl_surface *dri2_surf)
 328 {
 329    struct dri2_egl_display *dri2_dpy =
 330       dri2_egl_display(dri2_surf->base.Resource.Display);
 331    int i, use_flags;
 332    unsigned int dri_image_format;
 333
 334    /* currently supports three WL DRM formats,
 335     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 336     * and WL_DRM_FORMAT_RGB565
 337     */
 338    switch (dri2_surf->format) {
 339    case WL_DRM_FORMAT_ARGB8888:
 340       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 341       break;
 342    case WL_DRM_FORMAT_XRGB8888:
 343       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 344       break;
 345    case WL_DRM_FORMAT_RGB565:
 346       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 347       break;
 348    default:
 349       /* format is not supported */
 350       return -1;
 351    }
 352
 353    /* There might be a buffer release already queued that wasn't processed */
 354    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
 355
 356    if (dri2_surf->back == NULL) {
 357       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 358          /* Get an unlocked buffer, preferrably one with a dri_buffer
 359           * already allocated. */
 360          if (dri2_surf->color_buffers[i].locked)
 361             continue;
 362          if (dri2_surf->back == NULL)
 363             dri2_surf->back = &dri2_surf->color_buffers[i];
 364          else if (dri2_surf->back->dri_image == NULL)
 365             dri2_surf->back = &dri2_surf->color_buffers[i];
 366       }
 367    }
 368
 369    if (dri2_surf->back == NULL)
 370       return -1;
 371
 372    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 373
 374    if (dri2_dpy->is_different_gpu &&
 375        dri2_surf->back->linear_copy == NULL) {
 376        dri2_surf->back->linear_copy =
 377           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 378                                       dri2_surf->base.Width,
 379                                       dri2_surf->base.Height,
 380                                       dri_image_format,
 381                                       use_flags |
 382                                       __DRI_IMAGE_USE_LINEAR,
 383                                       NULL);
 384       if (dri2_surf->back->linear_copy == NULL)
 385           return -1;
 386    }
 387
 388    if (dri2_surf->back->dri_image == NULL) {
 389       dri2_surf->back->dri_image =
 390          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 391                                       dri2_surf->base.Width,
 392                                       dri2_surf->base.Height,
 393                                       dri_image_format,
 394                                       dri2_dpy->is_different_gpu ?
 395                                          0 : use_flags,
 396                                       NULL);
 397       dri2_surf->back->age = 0;
 398    }
 399    if (dri2_surf->back->dri_image == NULL)
 400       return -1;
 401
 402    dri2_surf->back->locked = 1;
 403
 404    return 0;
 405 }
 406
 407
 408 static void
 409 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 410 {
 411    struct dri2_egl_display *dri2_dpy =
 412       dri2_egl_display(dri2_surf->base.Resource.Display);
 413    __DRIimage *image;
 414    int name, pitch;
 415
 416    image = dri2_surf->back->dri_image;
 417
 418    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 419    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 420
 421    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 422    buffer->name = name;
 423    buffer->pitch = pitch;
 424    buffer->cpp = 4;
 425    buffer->flags = 0;
 426 }
 427
 428 static int
 429 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 430            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 431 {
 432    struct dri2_egl_display *dri2_dpy =
 433       dri2_egl_display(dri2_surf->base.Resource.Display);
 434    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 435
 436    if (b == NULL) {
 437       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 438                                          attachment, format,
 439                                          dri2_surf->base.Width,
 440                                          dri2_surf->base.Height);
 441       dri2_surf->dri_buffers[attachment] = b;
 442    }
 443    if (b == NULL)
 444       return -1;
 445
 446    memcpy(buffer, b, sizeof *buffer);
 447
 448    return 0;
 449 }
 450
 451 static int
 452 update_buffers(struct dri2_egl_surface *dri2_surf)
 453 {
 454    struct dri2_egl_display *dri2_dpy =
 455       dri2_egl_display(dri2_surf->base.Resource.Display);
 456    int i;
 457
 458    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 459        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 460
 461       dri2_wl_release_buffers(dri2_surf);
 462
 463       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 464       dri2_surf->base.Height = dri2_surf->wl_win->height;
 465       dri2_surf->dx = dri2_surf->wl_win->dx;
 466       dri2_surf->dy = dri2_surf->wl_win->dy;
 467    }
 468
 469    if (get_back_bo(dri2_surf) < 0) {
 470       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 471       return -1;
 472    }
 473
 474    /* If we have an extra unlocked buffer at this point, we had to do triple
 475     * buffering for a while, but now can go back to just double buffering.
 476     * That means we can free any unlocked buffer now. */
 477    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 478       if (!dri2_surf->color_buffers[i].locked &&
 479           dri2_surf->color_buffers[i].wl_buffer) {
 480          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 481          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 482          if (dri2_dpy->is_different_gpu)
 483             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 484          dri2_surf->color_buffers[i].wl_buffer = NULL;
 485          dri2_surf->color_buffers[i].dri_image = NULL;
 486          dri2_surf->color_buffers[i].linear_copy = NULL;
 487       }
 488    }
 489
 490    return 0;
 491 }
 492
 493 static __DRIbuffer *
 494 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 495                                 int *width, int *height,
 496                                 unsigned int *attachments, int count,
 497                                 int *out_count, void *loaderPrivate)
 498 {
 499    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 500    int i, j;
 501
 502    if (update_buffers(dri2_surf) < 0)
 503       return NULL;
 504
 505    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 506       switch (attachments[i]) {
 507       case __DRI_BUFFER_BACK_LEFT:
 508          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 509          break;
 510       default:
 511          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 512                         &dri2_surf->buffers[j]) < 0) {
 513             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 514             return NULL;
 515          }
 516          break;
 517       }
 518    }
 519
 520    *out_count = j;
 521    if (j == 0)
 522            return NULL;
 523
 524    *width = dri2_surf->base.Width;
 525    *height = dri2_surf->base.Height;
 526
 527    return dri2_surf->buffers;
 528 }
 529
 530 static __DRIbuffer *
 531 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 532                     int *width, int *height,
 533                     unsigned int *attachments, int count,
 534                     int *out_count, void *loaderPrivate)
 535 {
 536    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 537    unsigned int *attachments_with_format;
 538    __DRIbuffer *buffer;
 539    unsigned int bpp;
 540
 541    int i;
 542
 543    switch (dri2_surf->format) {
 544    case WL_DRM_FORMAT_ARGB8888:
 545    case WL_DRM_FORMAT_XRGB8888:
 546       bpp = 32;
 547       break;
 548    case WL_DRM_FORMAT_RGB565:
 549       bpp = 16;
 550       break;
 551    default:
 552       /* format is not supported */
 553       return NULL;
 554    }
 555
 556    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 557    if (!attachments_with_format) {
 558       *out_count = 0;
 559       return NULL;
 560    }
 561
 562    for (i = 0; i < count; ++i) {
 563       attachments_with_format[2*i] = attachments[i];
 564       attachments_with_format[2*i + 1] = bpp;
 565    }
 566
 567    buffer =
 568       dri2_wl_get_buffers_with_format(driDrawable,
 569                                       width, height,
 570                                       attachments_with_format, count,
 571                                       out_count, loaderPrivate);
 572
 573    free(attachments_with_format);
 574
 575    return buffer;
 576 }
 577
 578 static int
 579 image_get_buffers(__DRIdrawable *driDrawable,
 580                   unsigned int format,
 581                   uint32_t *stamp,
 582                   void *loaderPrivate,
 583                   uint32_t buffer_mask,
 584                   struct __DRIimageList *buffers)
 585 {
 586    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 587
 588    if (update_buffers(dri2_surf) < 0)
 589       return 0;
 590
 591    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 592    buffers->back = dri2_surf->back->dri_image;
 593
 594    return 1;
 595 }
 596
 597 static void
 598 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 599 {
 600    (void) driDrawable;
 601    (void) loaderPrivate;
 602 }
 603
 604 static const __DRIdri2LoaderExtension dri2_loader_extension = {
 605    .base = { __DRI_DRI2_LOADER, 3 },
 606
 607    .getBuffers           = dri2_wl_get_buffers,
 608    .flushFrontBuffer     = dri2_wl_flush_front_buffer,
 609    .getBuffersWithFormat = dri2_wl_get_buffers_with_format,
 610 };
 611
 612 static const __DRIimageLoaderExtension image_loader_extension = {
 613    .base = { __DRI_IMAGE_LOADER, 1 },
 614
 615    .getBuffers          = image_get_buffers,
 616    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 617 };
 618
 619 static void
 620 wayland_throttle_callback(void *data,
 621                           struct wl_callback *callback,
 622                           uint32_t time)
 623 {
 624    struct dri2_egl_surface *dri2_surf = data;
 625
 626    dri2_surf->throttle_callback = NULL;
 627    wl_callback_destroy(callback);
 628 }
 629
 630 static const struct wl_callback_listener throttle_listener = {
 631    .done = wayland_throttle_callback
 632 };
 633
 634 static void
 635 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 636 {
 637    struct dri2_egl_display *dri2_dpy =
 638       dri2_egl_display(dri2_surf->base.Resource.Display);
 639    __DRIimage *image;
 640    int fd, stride, name;
 641
 642    if (dri2_surf->current->wl_buffer != NULL)
 643       return;
 644
 645    if (dri2_dpy->is_different_gpu) {
 646       image = dri2_surf->current->linear_copy;
 647    } else {
 648       image = dri2_surf->current->dri_image;
 649    }
 650    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 651       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 652       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 653
 654       dri2_surf->current->wl_buffer =
 655          wl_drm_create_prime_buffer(dri2_surf->wl_drm_wrapper,
 656                                     fd,
 657                                     dri2_surf->base.Width,
 658                                     dri2_surf->base.Height,
 659                                     dri2_surf->format,
 660                                     0, stride,
 661                                     0, 0,
 662                                     0, 0);
 663       close(fd);
 664    } else {
 665       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 666       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 667
 668       dri2_surf->current->wl_buffer =
 669          wl_drm_create_buffer(dri2_surf->wl_drm_wrapper,
 670                               name,
 671                               dri2_surf->base.Width,
 672                               dri2_surf->base.Height,
 673                               stride,
 674                               dri2_surf->format);
 675    }
 676
 677    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 678                           &wl_buffer_listener, dri2_surf);
 679 }
 680
 681 static EGLBoolean
 682 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 683                   const EGLint *rects,
 684                   EGLint n_rects)
 685 {
 686    int i;
 687
 688    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_surface_wrapper)
 689        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 690       return EGL_FALSE;
 691
 692    for (i = 0; i < n_rects; i++) {
 693       const int *rect = &rects[i * 4];
 694
 695       wl_surface_damage_buffer(dri2_surf->wl_surface_wrapper,
 696                                rect[0],
 697                                dri2_surf->base.Height - rect[1] - rect[3],
 698                                rect[2], rect[3]);
 699    }
 700    return EGL_TRUE;
 701 }
 702 /**
 703  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 704  */
 705 static EGLBoolean
 706 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 707                                  _EGLDisplay *disp,
 708                                  _EGLSurface *draw,
 709                                  const EGLint *rects,
 710                                  EGLint n_rects)
 711 {
 712    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 713    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 714    int i;
 715
 716    while (dri2_surf->throttle_callback != NULL)
 717       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 718                                     dri2_surf->wl_queue) == -1)
 719          return -1;
 720
 721    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 722       if (dri2_surf->color_buffers[i].age > 0)
 723          dri2_surf->color_buffers[i].age++;
 724
 725    /* Make sure we have a back buffer in case we're swapping without ever
 726     * rendering. */
 727    if (get_back_bo(dri2_surf) < 0) {
 728       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 729       return EGL_FALSE;
 730    }
 731
 732    if (draw->SwapInterval > 0) {
 733       dri2_surf->throttle_callback =
 734          wl_surface_frame(dri2_surf->wl_surface_wrapper);
 735       wl_callback_add_listener(dri2_surf->throttle_callback,
 736                                &throttle_listener, dri2_surf);
 737    }
 738
 739    dri2_surf->back->age = 1;
 740    dri2_surf->current = dri2_surf->back;
 741    dri2_surf->back = NULL;
 742
 743    create_wl_buffer(dri2_surf);
 744
 745    wl_surface_attach(dri2_surf->wl_surface_wrapper,
 746                      dri2_surf->current->wl_buffer,
 747                      dri2_surf->dx, dri2_surf->dy);
 748
 749    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 750    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 751    /* reset resize growing parameters */
 752    dri2_surf->dx = 0;
 753    dri2_surf->dy = 0;
 754
 755    /* If the compositor doesn't support damage_buffer, we deliberately
 756     * ignore the damage region and post maximum damage, due to
 757     * https://bugs.freedesktop.org/78190 */
 758    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 759       wl_surface_damage(dri2_surf->wl_surface_wrapper,
 760                         0, 0, INT32_MAX, INT32_MAX);
 761
 762    if (dri2_dpy->is_different_gpu) {
 763       _EGLContext *ctx = _eglGetCurrentContext();
 764       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 765       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 766                                  dri2_surf->current->linear_copy,
 767                                  dri2_surf->current->dri_image,
 768                                  0, 0, dri2_surf->base.Width,
 769                                  dri2_surf->base.Height,
 770                                  0, 0, dri2_surf->base.Width,
 771                                  dri2_surf->base.Height, 0);
 772    }
 773
 774    dri2_flush_drawable_for_swapbuffers(disp, draw);
 775    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 776
 777    wl_surface_commit(dri2_surf->wl_surface_wrapper);
 778
 779    /* If we're not waiting for a frame callback then we'll at least throttle
 780     * to a sync callback so that we always give a chance for the compositor to
 781     * handle the commit and send a release event before checking for a free
 782     * buffer */
 783    if (dri2_surf->throttle_callback == NULL) {
 784       dri2_surf->throttle_callback = wl_display_sync(dri2_surf->wl_dpy_wrapper);
 785       wl_callback_add_listener(dri2_surf->throttle_callback,
 786                                &throttle_listener, dri2_surf);
 787    }
 788
 789    wl_display_flush(dri2_dpy->wl_dpy);
 790
 791    return EGL_TRUE;
 792 }
 793
 794 static EGLint
 795 dri2_wl_query_buffer_age(_EGLDriver *drv,
 796                          _EGLDisplay *disp, _EGLSurface *surface)
 797 {
 798    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 799
 800    if (get_back_bo(dri2_surf) < 0) {
 801       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 802       return 0;
 803    }
 804
 805    return dri2_surf->back->age;
 806 }
 807
 808 static EGLBoolean
 809 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 810 {
 811    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 812 }
 813
 814 static struct wl_buffer *
 815 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 816                                           _EGLDisplay *disp,
 817                                           _EGLImage *img)
 818 {
 819    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 820    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 821    __DRIimage *image = dri2_img->dri_image;
 822    struct wl_buffer *buffer;
 823    int width, height, format, pitch;
 824    enum wl_drm_format wl_format;
 825
 826    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 827
 828    switch (format) {
 829    case __DRI_IMAGE_FORMAT_ARGB8888:
 830       if (!(dri2_dpy->formats & HAS_ARGB8888))
 831          goto bad_format;
 832       wl_format = WL_DRM_FORMAT_ARGB8888;
 833       break;
 834    case __DRI_IMAGE_FORMAT_XRGB8888:
 835       if (!(dri2_dpy->formats & HAS_XRGB8888))
 836          goto bad_format;
 837       wl_format = WL_DRM_FORMAT_XRGB8888;
 838       break;
 839    default:
 840       goto bad_format;
 841    }
 842
 843    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 844    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 845    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 846
 847    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 848       int fd;
 849
 850       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 851
 852       buffer =
 853          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 854                                     fd,
 855                                     width, height,
 856                                     wl_format,
 857                                     0, pitch,
 858                                     0, 0,
 859                                     0, 0);
 860
 861       close(fd);
 862    } else {
 863       int name;
 864
 865       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 866
 867       buffer =
 868          wl_drm_create_buffer(dri2_dpy->wl_drm,
 869                               name,
 870                               width, height,
 871                               pitch,
 872                               wl_format);
 873    }
 874
 875    /* The buffer object will have been created with our internal event queue
 876     * because it is using the wl_drm object as a proxy factory. We want the
 877     * buffer to be used by the application so we'll reset it to the display's
 878     * default event queue */
 879    if (buffer)
 880       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 881
 882    return buffer;
 883
 884 bad_format:
 885    _eglError(EGL_BAD_MATCH, "unsupported image format");
 886    return NULL;
 887 }
 888
 889 static int
 890 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 891 {
 892    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 893    int ret = 0;
 894
 895    if (dri2_dpy->is_render_node) {
 896       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 897                             "authenticate for render-nodes");
 898       return 0;
 899    }
 900    dri2_dpy->authenticated = 0;
 901
 902    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 903    if (roundtrip(dri2_dpy) < 0)
 904       ret = -1;
 905
 906    if (!dri2_dpy->authenticated)
 907       ret = -1;
 908
 909    /* reset authenticated */
 910    dri2_dpy->authenticated = 1;
 911
 912    return ret;
 913 }
 914
 915 static void
 916 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 917 {
 918    struct dri2_egl_display *dri2_dpy = data;
 919    drm_magic_t magic;
 920
 921    dri2_dpy->device_name = strdup(device);
 922    if (!dri2_dpy->device_name)
 923       return;
 924
 925    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 926    if (dri2_dpy->fd == -1) {
 927       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 928               dri2_dpy->device_name, strerror(errno));
 929       return;
 930    }
 931
 932    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 933       dri2_dpy->authenticated = 1;
 934    } else {
 935       drmGetMagic(dri2_dpy->fd, &magic);
 936       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 937    }
 938 }
 939
 940 static void
 941 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 942 {
 943    struct dri2_egl_display *dri2_dpy = data;
 944
 945    switch (format) {
 946    case WL_DRM_FORMAT_ARGB8888:
 947       dri2_dpy->formats |= HAS_ARGB8888;
 948       break;
 949    case WL_DRM_FORMAT_XRGB8888:
 950       dri2_dpy->formats |= HAS_XRGB8888;
 951       break;
 952    case WL_DRM_FORMAT_RGB565:
 953       dri2_dpy->formats |= HAS_RGB565;
 954       break;
 955    }
 956 }
 957
 958 static void
 959 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 960 {
 961    struct dri2_egl_display *dri2_dpy = data;
 962
 963    dri2_dpy->capabilities = value;
 964 }
 965
 966 static void
 967 drm_handle_authenticated(void *data, struct wl_drm *drm)
 968 {
 969    struct dri2_egl_display *dri2_dpy = data;
 970
 971    dri2_dpy->authenticated = 1;
 972 }
 973
 974 static const struct wl_drm_listener drm_listener = {
 975    .device = drm_handle_device,
 976    .format = drm_handle_format,
 977    .authenticated = drm_handle_authenticated,
 978    .capabilities = drm_handle_capabilities
 979 };
 980
 981 static void
 982 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 983                        const char *interface, uint32_t version)
 984 {
 985    struct dri2_egl_display *dri2_dpy = data;
 986
 987    if (version > 1)
 988       version = 2;
 989    if (strcmp(interface, "wl_drm") == 0) {
 990       dri2_dpy->wl_drm =
 991          wl_registry_bind(registry, name, &wl_drm_interface, version);
 992       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 993    }
 994 }
 995
 996 static void
 997 registry_handle_global_remove(void *data, struct wl_registry *registry,
 998                               uint32_t name)
 999 {
1000 }
1001
1002 static const struct wl_registry_listener registry_listener_drm = {
1003    .global = registry_handle_global_drm,
1004    .global_remove = registry_handle_global_remove
1005 };
1006
1007 static EGLBoolean
1008 dri2_wl_swap_interval(_EGLDriver *drv,
1009                    _EGLDisplay *disp,
1010                    _EGLSurface *surf,
1011                    EGLint interval)
1012 {
1013    if (interval > surf->Config->MaxSwapInterval)
1014       interval = surf->Config->MaxSwapInterval;
1015    else if (interval < surf->Config->MinSwapInterval)
1016       interval = surf->Config->MinSwapInterval;
1017
1018    surf->SwapInterval = interval;
1019
1020    return EGL_TRUE;
1021 }
1022
1023 static void
1024 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1025 {
1026    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1027
1028    /* We can't use values greater than 1 on Wayland because we are using the
1029     * frame callback to synchronise the frame and the only way we be sure to
1030     * get a frame callback is to attach a new buffer. Therefore we can't just
1031     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1032
1033    if (dri2_dpy->config)
1034       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1035                                      "vblank_mode", &vblank_mode);
1036    switch (vblank_mode) {
1037    case DRI_CONF_VBLANK_NEVER:
1038       dri2_dpy->min_swap_interval = 0;
1039       dri2_dpy->max_swap_interval = 0;
1040       dri2_dpy->default_swap_interval = 0;
1041       break;
1042    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1043       dri2_dpy->min_swap_interval = 1;
1044       dri2_dpy->max_swap_interval = 1;
1045       dri2_dpy->default_swap_interval = 1;
1046       break;
1047    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1048       dri2_dpy->min_swap_interval = 0;
1049       dri2_dpy->max_swap_interval = 1;
1050       dri2_dpy->default_swap_interval = 0;
1051       break;
1052    default:
1053    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1054       dri2_dpy->min_swap_interval = 0;
1055       dri2_dpy->max_swap_interval = 1;
1056       dri2_dpy->default_swap_interval = 1;
1057       break;
1058    }
1059 }
1060
1061 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1062    .authenticate = dri2_wl_authenticate,
1063    .create_window_surface = dri2_wl_create_window_surface,
1064    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1065    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1066    .destroy_surface = dri2_wl_destroy_surface,
1067    .create_image = dri2_create_image_khr,
1068    .swap_interval = dri2_wl_swap_interval,
1069    .swap_buffers = dri2_wl_swap_buffers,
1070    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1071    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1072    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1073    .copy_buffers = dri2_fallback_copy_buffers,
1074    .query_buffer_age = dri2_wl_query_buffer_age,
1075    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1076    .get_sync_values = dri2_fallback_get_sync_values,
1077    .get_dri_drawable = dri2_surface_get_dri_drawable,
1078 };
1079
1080 static const __DRIextension *dri2_loader_extensions[] = {
1081    &dri2_loader_extension.base,
1082    &image_loader_extension.base,
1083    &image_lookup_extension.base,
1084    &use_invalidate.base,
1085    NULL,
1086 };
1087
1088 static const __DRIextension *image_loader_extensions[] = {
1089    &image_loader_extension.base,
1090    &image_lookup_extension.base,
1091    &use_invalidate.base,
1092    NULL,
1093 };
1094
1095 static EGLBoolean
1096 dri2_wl_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
1097 {
1098    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1099    static const struct {
1100       const char *format_name;
1101       int has_format;
1102       unsigned int rgba_masks[4];
1103    } visuals[] = {
1104       { "XRGB8888", HAS_XRGB8888, { 0xff0000, 0xff00, 0x00ff, 0xff000000 } },
1105       { "ARGB8888", HAS_ARGB8888, { 0xff0000, 0xff00, 0x00ff, 0 } },
1106       { "RGB565",   HAS_RGB565,   { 0x00f800, 0x07e0, 0x001f, 0 } },
1107    };
1108    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
1109    unsigned int count, i, j;
1110
1111    count = 0;
1112    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1113       for (j = 0; j < ARRAY_SIZE(visuals); j++) {
1114          struct dri2_egl_config *dri2_conf;
1115
1116          if (!(dri2_dpy->formats & visuals[j].has_format))
1117             continue;
1118
1119          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
1120                count + 1, EGL_WINDOW_BIT, NULL, visuals[j].rgba_masks);
1121          if (dri2_conf) {
1122             count++;
1123             format_count[j]++;
1124          }
1125       }
1126    }
1127
1128    for (i = 0; i < ARRAY_SIZE(format_count); i++) {
1129       if (!format_count[i]) {
1130          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
1131                  visuals[i].format_name);
1132       }
1133    }
1134
1135    return (count != 0);
1136 }
1137
1138 static EGLBoolean
1139 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1140 {
1141    struct dri2_egl_display *dri2_dpy;
1142
1143    loader_set_logger(_eglLog);
1144
1145    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1146    if (!dri2_dpy)
1147       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1148
1149    disp->DriverData = (void *) dri2_dpy;
1150    if (disp->PlatformDisplay == NULL) {
1151       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1152       if (dri2_dpy->wl_dpy == NULL)
1153          goto cleanup_dpy;
1154       dri2_dpy->own_device = 1;
1155    } else {
1156       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1157    }
1158
1159    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1160
1161    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1162    if (dri2_dpy->wl_dpy_wrapper == NULL)
1163       goto cleanup_dpy_wrapper;
1164
1165    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1166                       dri2_dpy->wl_queue);
1167
1168    if (dri2_dpy->own_device)
1169       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1170
1171    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1172    wl_registry_add_listener(dri2_dpy->wl_registry,
1173                             &registry_listener_drm, dri2_dpy);
1174    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1175       goto cleanup_registry;
1176
1177    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1178       goto cleanup_drm;
1179
1180    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1181       goto cleanup_fd;
1182
1183    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1184                                                &dri2_dpy->is_different_gpu);
1185    if (dri2_dpy->is_different_gpu) {
1186       free(dri2_dpy->device_name);
1187       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1188       if (!dri2_dpy->device_name) {
1189          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1190                                   "for requested GPU");
1191          goto cleanup_fd;
1192       }
1193    }
1194
1195    /* we have to do the check now, because loader_get_user_preferred_fd
1196     * will return a render-node when the requested gpu is different
1197     * to the server, but also if the client asks for the same gpu than
1198     * the server by requesting its pci-id */
1199    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1200
1201    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
1202    if (dri2_dpy->driver_name == NULL) {
1203       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1204       goto cleanup_fd;
1205    }
1206
1207    if (!dri2_load_driver(disp))
1208       goto cleanup_driver_name;
1209
1210    /* render nodes cannot use Gem names, and thus do not support
1211     * the __DRI_DRI2_LOADER extension */
1212    if (!dri2_dpy->is_render_node)
1213       dri2_dpy->loader_extensions = dri2_loader_extensions;
1214    else
1215       dri2_dpy->loader_extensions = image_loader_extensions;
1216
1217    if (!dri2_create_screen(disp))
1218       goto cleanup_driver;
1219
1220    dri2_wl_setup_swap_interval(dri2_dpy);
1221
1222    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1223     * createImageFromFds support indicates that Prime export/import
1224     * is supported by the driver. Fall back to
1225     * gem names if we don't have Prime support. */
1226
1227    if (dri2_dpy->image->base.version < 7 ||
1228        dri2_dpy->image->createImageFromFds == NULL)
1229       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1230
1231    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1232     * The server needs to accept them */
1233    if (dri2_dpy->is_render_node &&
1234        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1235       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1236       goto cleanup_screen;
1237    }
1238
1239    if (dri2_dpy->is_different_gpu &&
1240        (dri2_dpy->image->base.version < 9 ||
1241         dri2_dpy->image->blitImage == NULL)) {
1242       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1243                             "Image extension in the driver is not "
1244                             "compatible. Version 9 or later and blitImage() "
1245                             "are required");
1246       goto cleanup_screen;
1247    }
1248
1249    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1250       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1251       goto cleanup_screen;
1252    }
1253
1254    dri2_set_WL_bind_wayland_display(drv, disp);
1255    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1256     * because the buffer of the EGLImage has likely a tiling mode the server
1257     * gpu won't support. These is no way to check for now. Thus do not support the
1258     * extension */
1259    if (!dri2_dpy->is_different_gpu) {
1260       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1261    } else {
1262       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1263          dri2_fallback_create_wayland_buffer_from_image;
1264    }
1265    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1266
1267    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1268
1269    /* Fill vtbl last to prevent accidentally calling virtual function during
1270     * initialization.
1271     */
1272    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1273
1274    return EGL_TRUE;
1275
1276  cleanup_screen:
1277    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1278  cleanup_driver:
1279    dlclose(dri2_dpy->driver);
1280  cleanup_driver_name:
1281    free(dri2_dpy->driver_name);
1282  cleanup_fd:
1283    close(dri2_dpy->fd);
1284  cleanup_drm:
1285    free(dri2_dpy->device_name);
1286    wl_drm_destroy(dri2_dpy->wl_drm);
1287  cleanup_registry:
1288    wl_registry_destroy(dri2_dpy->wl_registry);
1289    wl_proxy_wrapper_destroy(dri2_dpy->wl_dpy_wrapper);
1290  cleanup_dpy_wrapper:
1291    wl_event_queue_destroy(dri2_dpy->wl_queue);
1292    if (disp->PlatformDisplay == NULL)
1293       wl_display_disconnect(dri2_dpy->wl_dpy);
1294  cleanup_dpy:
1295    free(dri2_dpy);
1296    disp->DriverData = NULL;
1297
1298    return EGL_FALSE;
1299 }
1300
1301 static int
1302 dri2_wl_swrast_get_stride_for_format(int format, int w)
1303 {
1304    if (format == WL_SHM_FORMAT_RGB565)
1305       return 2 * w;
1306    else /* ARGB8888 || XRGB8888 */
1307       return 4 * w;
1308 }
1309
1310 /*
1311  * Taken from weston shared/os-compatibility.c
1312  */
1313
1314 #ifndef HAVE_MKOSTEMP
1315
1316 static int
1317 set_cloexec_or_close(int fd)
1318 {
1319    long flags;
1320
1321    if (fd == -1)
1322       return -1;
1323
1324    flags = fcntl(fd, F_GETFD);
1325    if (flags == -1)
1326       goto err;
1327
1328    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1329       goto err;
1330
1331    return fd;
1332
1333 err:
1334    close(fd);
1335    return -1;
1336 }
1337
1338 #endif
1339
1340 /*
1341  * Taken from weston shared/os-compatibility.c
1342  */
1343
1344 static int
1345 create_tmpfile_cloexec(char *tmpname)
1346 {
1347    int fd;
1348
1349 #ifdef HAVE_MKOSTEMP
1350    fd = mkostemp(tmpname, O_CLOEXEC);
1351    if (fd >= 0)
1352       unlink(tmpname);
1353 #else
1354    fd = mkstemp(tmpname);
1355    if (fd >= 0) {
1356       fd = set_cloexec_or_close(fd);
1357       unlink(tmpname);
1358    }
1359 #endif
1360
1361    return fd;
1362 }
1363
1364 /*
1365  * Taken from weston shared/os-compatibility.c
1366  *
1367  * Create a new, unique, anonymous file of the given size, and
1368  * return the file descriptor for it. The file descriptor is set
1369  * CLOEXEC. The file is immediately suitable for mmap()'ing
1370  * the given size at offset zero.
1371  *
1372  * The file should not have a permanent backing store like a disk,
1373  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1374  *
1375  * The file name is deleted from the file system.
1376  *
1377  * The file is suitable for buffer sharing between processes by
1378  * transmitting the file descriptor over Unix sockets using the
1379  * SCM_RIGHTS methods.
1380  *
1381  * If the C library implements posix_fallocate(), it is used to
1382  * guarantee that disk space is available for the file at the
1383  * given size. If disk space is insufficent, errno is set to ENOSPC.
1384  * If posix_fallocate() is not supported, program may receive
1385  * SIGBUS on accessing mmap()'ed file contents instead.
1386  */
1387 static int
1388 os_create_anonymous_file(off_t size)
1389 {
1390    static const char template[] = "/mesa-shared-XXXXXX";
1391    const char *path;
1392    char *name;
1393    int fd;
1394    int ret;
1395
1396    path = getenv("XDG_RUNTIME_DIR");
1397    if (!path) {
1398       errno = ENOENT;
1399       return -1;
1400    }
1401
1402    name = malloc(strlen(path) + sizeof(template));
1403    if (!name)
1404       return -1;
1405
1406    strcpy(name, path);
1407    strcat(name, template);
1408
1409    fd = create_tmpfile_cloexec(name);
1410
1411    free(name);
1412
1413    if (fd < 0)
1414       return -1;
1415
1416    ret = ftruncate(fd, size);
1417    if (ret < 0) {
1418       close(fd);
1419       return -1;
1420    }
1421
1422    return fd;
1423 }
1424
1425
1426 static EGLBoolean
1427 dri2_wl_swrast_allocate_buffer(struct dri2_egl_surface *dri2_surf,
1428                                int format, int w, int h,
1429                                void **data, int *size,
1430                                struct wl_buffer **buffer)
1431 {
1432    struct dri2_egl_display *dri2_dpy =
1433       dri2_egl_display(dri2_surf->base.Resource.Display);
1434    struct wl_shm_pool *pool;
1435    int fd, stride, size_map;
1436    void *data_map;
1437
1438    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1439    size_map = h * stride;
1440
1441    /* Create a sharable buffer */
1442    fd = os_create_anonymous_file(size_map);
1443    if (fd < 0)
1444       return EGL_FALSE;
1445
1446    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1447    if (data_map == MAP_FAILED) {
1448       close(fd);
1449       return EGL_FALSE;
1450    }
1451
1452    /* Share it in a wl_buffer */
1453    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1454    wl_proxy_set_queue((struct wl_proxy *)pool, dri2_surf->wl_queue);
1455    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1456    wl_shm_pool_destroy(pool);
1457    close(fd);
1458
1459    *data = data_map;
1460    *size = size_map;
1461    return EGL_TRUE;
1462 }
1463
1464 static int
1465 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1466 {
1467    struct dri2_egl_display *dri2_dpy =
1468       dri2_egl_display(dri2_surf->base.Resource.Display);
1469    int i;
1470
1471    /* we need to do the following operations only once per frame */
1472    if (dri2_surf->back)
1473       return 0;
1474
1475    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1476        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1477
1478       dri2_wl_release_buffers(dri2_surf);
1479
1480       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1481       dri2_surf->base.Height = dri2_surf->wl_win->height;
1482       dri2_surf->dx = dri2_surf->wl_win->dx;
1483       dri2_surf->dy = dri2_surf->wl_win->dy;
1484       dri2_surf->current = NULL;
1485    }
1486
1487    /* find back buffer */
1488
1489    /* There might be a buffer release already queued that wasn't processed */
1490    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
1491
1492    /* try get free buffer already created */
1493    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1494       if (!dri2_surf->color_buffers[i].locked &&
1495           dri2_surf->color_buffers[i].wl_buffer) {
1496           dri2_surf->back = &dri2_surf->color_buffers[i];
1497           break;
1498       }
1499    }
1500
1501    /* else choose any another free location */
1502    if (!dri2_surf->back) {
1503       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1504          if (!dri2_surf->color_buffers[i].locked) {
1505              dri2_surf->back = &dri2_surf->color_buffers[i];
1506              if (!dri2_wl_swrast_allocate_buffer(dri2_surf,
1507                                                  dri2_surf->format,
1508                                                  dri2_surf->base.Width,
1509                                                  dri2_surf->base.Height,
1510                                                  &dri2_surf->back->data,
1511                                                  &dri2_surf->back->data_size,
1512                                                  &dri2_surf->back->wl_buffer)) {
1513                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1514                  return -1;
1515              }
1516              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1517                                     &wl_buffer_listener, dri2_surf);
1518              break;
1519          }
1520       }
1521    }
1522
1523    if (!dri2_surf->back) {
1524       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1525       return -1;
1526    }
1527
1528    dri2_surf->back->locked = 1;
1529
1530    /* If we have an extra unlocked buffer at this point, we had to do triple
1531     * buffering for a while, but now can go back to just double buffering.
1532     * That means we can free any unlocked buffer now. */
1533    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1534       if (!dri2_surf->color_buffers[i].locked &&
1535           dri2_surf->color_buffers[i].wl_buffer) {
1536          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1537          munmap(dri2_surf->color_buffers[i].data,
1538                 dri2_surf->color_buffers[i].data_size);
1539          dri2_surf->color_buffers[i].wl_buffer = NULL;
1540          dri2_surf->color_buffers[i].data = NULL;
1541       }
1542    }
1543
1544    return 0;
1545 }
1546
1547 static void*
1548 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1549 {
1550    /* if there has been a resize: */
1551    if (!dri2_surf->current)
1552       return NULL;
1553
1554    return dri2_surf->current->data;
1555 }
1556
1557 static void*
1558 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1559 {
1560    assert(dri2_surf->back);
1561    return dri2_surf->back->data;
1562 }
1563
1564 static void
1565 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1566 {
1567    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1568
1569    while (dri2_surf->throttle_callback != NULL)
1570       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1571                                     dri2_surf->wl_queue) == -1)
1572          return;
1573
1574    if (dri2_surf->base.SwapInterval > 0) {
1575       dri2_surf->throttle_callback =
1576          wl_surface_frame(dri2_surf->wl_surface_wrapper);
1577       wl_callback_add_listener(dri2_surf->throttle_callback,
1578                                &throttle_listener, dri2_surf);
1579    }
1580
1581    dri2_surf->current = dri2_surf->back;
1582    dri2_surf->back = NULL;
1583
1584    wl_surface_attach(dri2_surf->wl_surface_wrapper,
1585                      dri2_surf->current->wl_buffer,
1586                      dri2_surf->dx, dri2_surf->dy);
1587
1588    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1589    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1590    /* reset resize growing parameters */
1591    dri2_surf->dx = 0;
1592    dri2_surf->dy = 0;
1593
1594    wl_surface_damage(dri2_surf->wl_surface_wrapper,
1595                      0, 0, INT32_MAX, INT32_MAX);
1596    wl_surface_commit(dri2_surf->wl_surface_wrapper);
1597
1598    /* If we're not waiting for a frame callback then we'll at least throttle
1599     * to a sync callback so that we always give a chance for the compositor to
1600     * handle the commit and send a release event before checking for a free
1601     * buffer */
1602    if (dri2_surf->throttle_callback == NULL) {
1603       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy_wrapper);
1604       wl_callback_add_listener(dri2_surf->throttle_callback,
1605                                &throttle_listener, dri2_surf);
1606    }
1607
1608    wl_display_flush(dri2_dpy->wl_dpy);
1609 }
1610
1611 static void
1612 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1613                                  int *x, int *y, int *w, int *h,
1614                                  void *loaderPrivate)
1615 {
1616    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1617
1618    (void) swrast_update_buffers(dri2_surf);
1619    *x = 0;
1620    *y = 0;
1621    *w = dri2_surf->base.Width;
1622    *h = dri2_surf->base.Height;
1623 }
1624
1625 static void
1626 dri2_wl_swrast_get_image(__DRIdrawable * read,
1627                          int x, int y, int w, int h,
1628                          char *data, void *loaderPrivate)
1629 {
1630    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1631    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1632    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1633    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1634    int dst_stride = copy_width;
1635    char *src, *dst;
1636
1637    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1638    if (!src) {
1639       memset(data, 0, copy_width * h);
1640       return;
1641    }
1642
1643    assert(data != src);
1644    assert(copy_width <= src_stride);
1645
1646    src += x_offset;
1647    src += y * src_stride;
1648    dst = data;
1649
1650    if (copy_width > src_stride-x_offset)
1651       copy_width = src_stride-x_offset;
1652    if (h > dri2_surf->base.Height-y)
1653       h = dri2_surf->base.Height-y;
1654
1655    for (; h>0; h--) {
1656       memcpy(dst, src, copy_width);
1657       src += src_stride;
1658       dst += dst_stride;
1659    }
1660 }
1661
1662 static void
1663 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1664                          int x, int y, int w, int h, int stride,
1665                          char *data, void *loaderPrivate)
1666 {
1667    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1668    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1669    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1670    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1671    char *src, *dst;
1672
1673    assert(copy_width <= stride);
1674
1675    (void) swrast_update_buffers(dri2_surf);
1676    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1677
1678    /* partial copy, copy old content */
1679    if (copy_width < dst_stride)
1680       dri2_wl_swrast_get_image(draw, 0, 0,
1681                                dri2_surf->base.Width, dri2_surf->base.Height,
1682                                dst, loaderPrivate);
1683
1684    dst += x_offset;
1685    dst += y * dst_stride;
1686
1687    src = data;
1688
1689    /* drivers expect we do these checks (and some rely on it) */
1690    if (copy_width > dst_stride-x_offset)
1691       copy_width = dst_stride-x_offset;
1692    if (h > dri2_surf->base.Height-y)
1693       h = dri2_surf->base.Height-y;
1694
1695    for (; h>0; h--) {
1696       memcpy(dst, src, copy_width);
1697       src += stride;
1698       dst += dst_stride;
1699    }
1700    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1701 }
1702
1703 static void
1704 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1705                          int x, int y, int w, int h,
1706                          char *data, void *loaderPrivate)
1707 {
1708    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1709    int stride;
1710
1711    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1712    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1713                              stride, data, loaderPrivate);
1714 }
1715
1716 static EGLBoolean
1717 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1718 {
1719    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1720    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1721
1722    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1723    return EGL_TRUE;
1724 }
1725
1726 static void
1727 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1728 {
1729    struct dri2_egl_display *dri2_dpy = data;
1730
1731    switch (format) {
1732    case WL_SHM_FORMAT_ARGB8888:
1733       dri2_dpy->formats |= HAS_ARGB8888;
1734       break;
1735    case WL_SHM_FORMAT_XRGB8888:
1736       dri2_dpy->formats |= HAS_XRGB8888;
1737       break;
1738    case WL_SHM_FORMAT_RGB565:
1739       dri2_dpy->formats |= HAS_RGB565;
1740       break;
1741    }
1742 }
1743
1744 static const struct wl_shm_listener shm_listener = {
1745    .format = shm_handle_format
1746 };
1747
1748 static void
1749 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1750                               const char *interface, uint32_t version)
1751 {
1752    struct dri2_egl_display *dri2_dpy = data;
1753
1754    if (strcmp(interface, "wl_shm") == 0) {
1755       dri2_dpy->wl_shm =
1756          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1757       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1758    }
1759 }
1760
1761 static const struct wl_registry_listener registry_listener_swrast = {
1762    .global = registry_handle_global_swrast,
1763    .global_remove = registry_handle_global_remove
1764 };
1765
1766 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1767    .authenticate = NULL,
1768    .create_window_surface = dri2_wl_create_window_surface,
1769    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1770    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1771    .destroy_surface = dri2_wl_destroy_surface,
1772    .create_image = dri2_fallback_create_image_khr,
1773    .swap_interval = dri2_wl_swap_interval,
1774    .swap_buffers = dri2_wl_swrast_swap_buffers,
1775    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1776    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1777    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1778    .copy_buffers = dri2_fallback_copy_buffers,
1779    .query_buffer_age = dri2_fallback_query_buffer_age,
1780    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1781    .get_sync_values = dri2_fallback_get_sync_values,
1782    .get_dri_drawable = dri2_surface_get_dri_drawable,
1783 };
1784
1785 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1786    .base = { __DRI_SWRAST_LOADER, 2 },
1787
1788    .getDrawableInfo = dri2_wl_swrast_get_drawable_info,
1789    .putImage        = dri2_wl_swrast_put_image,
1790    .getImage        = dri2_wl_swrast_get_image,
1791    .putImage2       = dri2_wl_swrast_put_image2,
1792 };
1793
1794 static const __DRIextension *swrast_loader_extensions[] = {
1795    &swrast_loader_extension.base,
1796    NULL,
1797 };
1798
1799 static EGLBoolean
1800 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1801 {
1802    struct dri2_egl_display *dri2_dpy;
1803
1804    loader_set_logger(_eglLog);
1805
1806    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1807    if (!dri2_dpy)
1808       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1809
1810    disp->DriverData = (void *) dri2_dpy;
1811    if (disp->PlatformDisplay == NULL) {
1812       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1813       if (dri2_dpy->wl_dpy == NULL)
1814          goto cleanup_dpy;
1815       dri2_dpy->own_device = 1;
1816    } else {
1817       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1818    }
1819
1820    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1821
1822    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1823    if (dri2_dpy->wl_dpy_wrapper == NULL)
1824       goto cleanup_dpy_wrapper;
1825
1826    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1827                       dri2_dpy->wl_queue);
1828
1829    if (dri2_dpy->own_device)
1830       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1831
1832    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1833    wl_registry_add_listener(dri2_dpy->wl_registry,
1834                             &registry_listener_swrast, dri2_dpy);
1835
1836    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1837       goto cleanup_registry;
1838
1839    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1840       goto cleanup_shm;
1841
1842    dri2_dpy->fd = -1;
1843    dri2_dpy->driver_name = strdup("swrast");
1844    if (!dri2_load_driver_swrast(disp))
1845       goto cleanup_shm;
1846
1847    dri2_dpy->loader_extensions = swrast_loader_extensions;
1848
1849    if (!dri2_create_screen(disp))
1850       goto cleanup_driver;
1851
1852    dri2_wl_setup_swap_interval(dri2_dpy);
1853
1854    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1855       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1856       goto cleanup_screen;
1857    }
1858
1859    /* Fill vtbl last to prevent accidentally calling virtual function during
1860     * initialization.
1861     */
1862    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1863
1864    return EGL_TRUE;
1865
1866  cleanup_screen:
1867    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1868  cleanup_driver:
1869    dlclose(dri2_dpy->driver);
1870  cleanup_shm:
1871    wl_shm_destroy(dri2_dpy->wl_shm);
1872  cleanup_registry:
1873    wl_registry_destroy(dri2_dpy->wl_registry);
1874    wl_proxy_wrapper_destroy(dri2_dpy->wl_dpy_wrapper);
1875  cleanup_dpy_wrapper:
1876    wl_event_queue_destroy(dri2_dpy->wl_queue);
1877    if (disp->PlatformDisplay == NULL)
1878       wl_display_disconnect(dri2_dpy->wl_dpy);
1879  cleanup_dpy:
1880    free(dri2_dpy);
1881    disp->DriverData = NULL;
1882
1883    return EGL_FALSE;
1884 }
1885
1886 EGLBoolean
1887 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1888 {
1889    EGLBoolean initialized = EGL_TRUE;
1890
1891    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1892
1893    if (hw_accel) {
1894       if (!dri2_initialize_wayland_drm(drv, disp)) {
1895          initialized = dri2_initialize_wayland_swrast(drv, disp);
1896       }
1897    } else {
1898       initialized = dri2_initialize_wayland_swrast(drv, disp);
1899    }
1900
1901    return initialized;
1902
1903 }