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