src/egl/drivers/dri2/platform_wayland.c

   1 /*
   2  * Copyright © 2011-2012 Intel Corporation
   3  * Copyright © 2012 Collabora, Ltd.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  20  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Kristian Høgsberg <krh@bitplanet.net>
  27  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  28  */
  29
  30 #include <stdint.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <limits.h>
  34 #include <dlfcn.h>
  35 #include <errno.h>
  36 #include <unistd.h>
  37 #include <fcntl.h>
  38 #include <xf86drm.h>
  39 #include <sys/mman.h>
  40
  41 #include "egl_dri2.h"
  42 #include "egl_dri2_fallbacks.h"
  43 #include "loader.h"
  44
  45 #include <wayland-client.h>
  46 #include "wayland-drm-client-protocol.h"
  47
  48 enum wl_drm_format_flags {
  49    HAS_ARGB8888 = 1,
  50    HAS_XRGB8888 = 2,
  51    HAS_RGB565 = 4,
  52 };
  53
  54 static EGLBoolean
  55 dri2_wl_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  56                       EGLint interval);
  57
  58 static void
  59 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  60 {
  61    int *done = data;
  62
  63    *done = 1;
  64    wl_callback_destroy(callback);
  65 }
  66
  67 static const struct wl_callback_listener sync_listener = {
  68    .done = sync_callback
  69 };
  70
  71 static int
  72 roundtrip(struct dri2_egl_display *dri2_dpy)
  73 {
  74    struct wl_callback *callback;
  75    int done = 0, ret = 0;
  76
  77    callback = wl_display_sync(dri2_dpy->wl_dpy);
  78    wl_callback_add_listener(callback, &sync_listener, &done);
  79    wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
  80    while (ret != -1 && !done)
  81       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  82
  83    if (!done)
  84       wl_callback_destroy(callback);
  85
  86    return ret;
  87 }
  88
  89 static void
  90 wl_buffer_release(void *data, struct wl_buffer *buffer)
  91 {
  92    struct dri2_egl_surface *dri2_surf = data;
  93    int i;
  94
  95    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  96       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  97          break;
  98
  99    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
 100       wl_buffer_destroy(buffer);
 101       return;
 102    }
 103
 104    dri2_surf->color_buffers[i].locked = 0;
 105 }
 106
 107 static const struct wl_buffer_listener wl_buffer_listener = {
 108    .release = wl_buffer_release
 109 };
 110
 111 static void
 112 resize_callback(struct wl_egl_window *wl_win, void *data)
 113 {
 114    struct dri2_egl_surface *dri2_surf = data;
 115    struct dri2_egl_display *dri2_dpy =
 116       dri2_egl_display(dri2_surf->base.Resource.Display);
 117
 118    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 119 }
 120
 121 /**
 122  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 123  */
 124 static _EGLSurface *
 125 dri2_wl_create_surface(_EGLDriver *drv, _EGLDisplay *disp,
 126                        _EGLConfig *conf, void *native_window,
 127                        const EGLint *attrib_list)
 128 {
 129    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 130    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 131    struct wl_egl_window *window = native_window;
 132    struct dri2_egl_surface *dri2_surf;
 133    const __DRIconfig *config;
 134
 135    (void) drv;
 136
 137    dri2_surf = calloc(1, sizeof *dri2_surf);
 138    if (!dri2_surf) {
 139       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 140       return NULL;
 141    }
 142
 143    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 144       goto cleanup_surf;
 145
 146    if (conf->RedSize == 5)
 147       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 148    else if (conf->AlphaSize == 0)
 149       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 150    else
 151       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 152
 153    if (!window) {
 154       _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 155       goto cleanup_surf;
 156    }
 157
 158    dri2_surf->wl_win = window;
 159
 160    dri2_surf->wl_win->private = dri2_surf;
 161    dri2_surf->wl_win->resize_callback = resize_callback;
 162
 163    dri2_surf->base.Width =  -1;
 164    dri2_surf->base.Height = -1;
 165
 166    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 167                                 dri2_surf->base.GLColorspace);
 168
 169    dri2_surf->dri_drawable =
 170       (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen, config,
 171                                            dri2_surf);
 172    if (dri2_surf->dri_drawable == NULL) {
 173       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 174       goto cleanup_surf;
 175    }
 176
 177    return &dri2_surf->base;
 178
 179  cleanup_surf:
 180    free(dri2_surf);
 181
 182    return NULL;
 183 }
 184
 185 /**
 186  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 187  */
 188 static _EGLSurface *
 189 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 190                               _EGLConfig *conf, void *native_window,
 191                               const EGLint *attrib_list)
 192 {
 193    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 194    _EGLSurface *surf;
 195
 196    surf = dri2_wl_create_surface(drv, disp, conf, native_window, attrib_list);
 197
 198    if (surf != NULL)
 199       dri2_wl_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 200
 201    return surf;
 202 }
 203
 204 static _EGLSurface *
 205 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 206                               _EGLConfig *conf, void *native_window,
 207                               const EGLint *attrib_list)
 208 {
 209    /* From the EGL_EXT_platform_wayland spec, version 3:
 210     *
 211     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 212     *   that belongs to Wayland. Any such call fails and generates
 213     *   EGL_BAD_PARAMETER.
 214     */
 215    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 216              "Wayland");
 217    return NULL;
 218 }
 219
 220 /**
 221  * Called via eglDestroySurface(), drv->API.DestroySurface().
 222  */
 223 static EGLBoolean
 224 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 225 {
 226    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 227    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 228    int i;
 229
 230    (void) drv;
 231
 232    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 233
 234    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 235       if (dri2_surf->color_buffers[i].wl_buffer)
 236          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 237       if (dri2_surf->color_buffers[i].dri_image)
 238          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 239       if (dri2_surf->color_buffers[i].linear_copy)
 240          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 241       if (dri2_surf->color_buffers[i].data)
 242          munmap(dri2_surf->color_buffers[i].data,
 243                 dri2_surf->color_buffers[i].data_size);
 244    }
 245
 246    if (dri2_dpy->dri2) {
 247       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 248          if (dri2_surf->dri_buffers[i] &&
 249              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 250             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 251                                           dri2_surf->dri_buffers[i]);
 252    }
 253
 254    if (dri2_surf->throttle_callback)
 255       wl_callback_destroy(dri2_surf->throttle_callback);
 256
 257    dri2_surf->wl_win->private = NULL;
 258    dri2_surf->wl_win->resize_callback = NULL;
 259
 260    free(surf);
 261
 262    return EGL_TRUE;
 263 }
 264
 265 static void
 266 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 267 {
 268    struct dri2_egl_display *dri2_dpy =
 269       dri2_egl_display(dri2_surf->base.Resource.Display);
 270    int i;
 271
 272    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 273       if (dri2_surf->color_buffers[i].wl_buffer &&
 274           !dri2_surf->color_buffers[i].locked)
 275          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 276       if (dri2_surf->color_buffers[i].dri_image)
 277          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 278       if (dri2_surf->color_buffers[i].linear_copy)
 279          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 280       if (dri2_surf->color_buffers[i].data)
 281          munmap(dri2_surf->color_buffers[i].data,
 282                 dri2_surf->color_buffers[i].data_size);
 283
 284       dri2_surf->color_buffers[i].wl_buffer = NULL;
 285       dri2_surf->color_buffers[i].dri_image = NULL;
 286       dri2_surf->color_buffers[i].linear_copy = NULL;
 287       dri2_surf->color_buffers[i].data = NULL;
 288       dri2_surf->color_buffers[i].locked = 0;
 289    }
 290
 291    if (dri2_dpy->dri2) {
 292       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 293          if (dri2_surf->dri_buffers[i] &&
 294              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 295             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 296                                           dri2_surf->dri_buffers[i]);
 297    }
 298 }
 299
 300 static int
 301 get_back_bo(struct dri2_egl_surface *dri2_surf)
 302 {
 303    struct dri2_egl_display *dri2_dpy =
 304       dri2_egl_display(dri2_surf->base.Resource.Display);
 305    int i, use_flags;
 306    unsigned int dri_image_format;
 307
 308    /* currently supports three WL DRM formats,
 309     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 310     * and WL_DRM_FORMAT_RGB565
 311     */
 312    switch (dri2_surf->format) {
 313    case WL_DRM_FORMAT_ARGB8888:
 314       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 315       break;
 316    case WL_DRM_FORMAT_XRGB8888:
 317       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 318       break;
 319    case WL_DRM_FORMAT_RGB565:
 320       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 321       break;
 322    default:
 323       /* format is not supported */
 324       return -1;
 325    }
 326
 327    /* We always want to throttle to some event (either a frame callback or
 328     * a sync request) after the commit so that we can be sure the
 329     * compositor has had a chance to handle it and send us a release event
 330     * before we look for a free buffer */
 331    while (dri2_surf->throttle_callback != NULL)
 332       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 333                                     dri2_dpy->wl_queue) == -1)
 334          return -1;
 335
 336    if (dri2_surf->back == NULL) {
 337       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 338          /* Get an unlocked buffer, preferrably one with a dri_buffer
 339           * already allocated. */
 340          if (dri2_surf->color_buffers[i].locked)
 341             continue;
 342          if (dri2_surf->back == NULL)
 343             dri2_surf->back = &dri2_surf->color_buffers[i];
 344          else if (dri2_surf->back->dri_image == NULL)
 345             dri2_surf->back = &dri2_surf->color_buffers[i];
 346       }
 347    }
 348
 349    if (dri2_surf->back == NULL)
 350       return -1;
 351
 352    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 353
 354    if (dri2_dpy->is_different_gpu &&
 355        dri2_surf->back->linear_copy == NULL) {
 356        dri2_surf->back->linear_copy =
 357           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 358                                       dri2_surf->base.Width,
 359                                       dri2_surf->base.Height,
 360                                       dri_image_format,
 361                                       use_flags |
 362                                       __DRI_IMAGE_USE_LINEAR,
 363                                       NULL);
 364       if (dri2_surf->back->linear_copy == NULL)
 365           return -1;
 366    }
 367
 368    if (dri2_surf->back->dri_image == NULL) {
 369       dri2_surf->back->dri_image =
 370          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 371                                       dri2_surf->base.Width,
 372                                       dri2_surf->base.Height,
 373                                       dri_image_format,
 374                                       dri2_dpy->is_different_gpu ?
 375                                          0 : use_flags,
 376                                       NULL);
 377       dri2_surf->back->age = 0;
 378    }
 379    if (dri2_surf->back->dri_image == NULL)
 380       return -1;
 381
 382    dri2_surf->back->locked = 1;
 383
 384    return 0;
 385 }
 386
 387
 388 static void
 389 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 390 {
 391    struct dri2_egl_display *dri2_dpy =
 392       dri2_egl_display(dri2_surf->base.Resource.Display);
 393    __DRIimage *image;
 394    int name, pitch;
 395
 396    image = dri2_surf->back->dri_image;
 397
 398    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 399    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 400
 401    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 402    buffer->name = name;
 403    buffer->pitch = pitch;
 404    buffer->cpp = 4;
 405    buffer->flags = 0;
 406 }
 407
 408 static int
 409 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 410            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 411 {
 412    struct dri2_egl_display *dri2_dpy =
 413       dri2_egl_display(dri2_surf->base.Resource.Display);
 414    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 415
 416    if (b == NULL) {
 417       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 418                                          attachment, format,
 419                                          dri2_surf->base.Width,
 420                                          dri2_surf->base.Height);
 421       dri2_surf->dri_buffers[attachment] = b;
 422    }
 423    if (b == NULL)
 424       return -1;
 425
 426    memcpy(buffer, b, sizeof *buffer);
 427
 428    return 0;
 429 }
 430
 431 static int
 432 update_buffers(struct dri2_egl_surface *dri2_surf)
 433 {
 434    struct dri2_egl_display *dri2_dpy =
 435       dri2_egl_display(dri2_surf->base.Resource.Display);
 436    int i;
 437
 438    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 439        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 440
 441       dri2_wl_release_buffers(dri2_surf);
 442
 443       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 444       dri2_surf->base.Height = dri2_surf->wl_win->height;
 445       dri2_surf->dx = dri2_surf->wl_win->dx;
 446       dri2_surf->dy = dri2_surf->wl_win->dy;
 447    }
 448
 449    if (get_back_bo(dri2_surf) < 0) {
 450       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 451       return -1;
 452    }
 453
 454    /* If we have an extra unlocked buffer at this point, we had to do triple
 455     * buffering for a while, but now can go back to just double buffering.
 456     * That means we can free any unlocked buffer now. */
 457    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 458       if (!dri2_surf->color_buffers[i].locked &&
 459           dri2_surf->color_buffers[i].wl_buffer) {
 460          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 461          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 462          if (dri2_dpy->is_different_gpu)
 463             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 464          dri2_surf->color_buffers[i].wl_buffer = NULL;
 465          dri2_surf->color_buffers[i].dri_image = NULL;
 466          dri2_surf->color_buffers[i].linear_copy = NULL;
 467       }
 468    }
 469
 470    return 0;
 471 }
 472
 473 static __DRIbuffer *
 474 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 475                                 int *width, int *height,
 476                                 unsigned int *attachments, int count,
 477                                 int *out_count, void *loaderPrivate)
 478 {
 479    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 480    int i, j;
 481
 482    if (update_buffers(dri2_surf) < 0)
 483       return NULL;
 484
 485    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 486       switch (attachments[i]) {
 487       case __DRI_BUFFER_BACK_LEFT:
 488          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 489          break;
 490       default:
 491          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 492                         &dri2_surf->buffers[j]) < 0) {
 493             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 494             return NULL;
 495          }
 496          break;
 497       }
 498    }
 499
 500    *out_count = j;
 501    if (j == 0)
 502            return NULL;
 503
 504    *width = dri2_surf->base.Width;
 505    *height = dri2_surf->base.Height;
 506
 507    return dri2_surf->buffers;
 508 }
 509
 510 static __DRIbuffer *
 511 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 512                     int *width, int *height,
 513                     unsigned int *attachments, int count,
 514                     int *out_count, void *loaderPrivate)
 515 {
 516    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 517    unsigned int *attachments_with_format;
 518    __DRIbuffer *buffer;
 519    unsigned int bpp;
 520
 521    int i;
 522
 523    switch (dri2_surf->format) {
 524    case WL_DRM_FORMAT_ARGB8888:
 525    case WL_DRM_FORMAT_XRGB8888:
 526       bpp = 32;
 527       break;
 528    case WL_DRM_FORMAT_RGB565:
 529       bpp = 16;
 530       break;
 531    default:
 532       /* format is not supported */
 533       return NULL;
 534    }
 535
 536    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 537    if (!attachments_with_format) {
 538       *out_count = 0;
 539       return NULL;
 540    }
 541
 542    for (i = 0; i < count; ++i) {
 543       attachments_with_format[2*i] = attachments[i];
 544       attachments_with_format[2*i + 1] = bpp;
 545    }
 546
 547    buffer =
 548       dri2_wl_get_buffers_with_format(driDrawable,
 549                                       width, height,
 550                                       attachments_with_format, count,
 551                                       out_count, loaderPrivate);
 552
 553    free(attachments_with_format);
 554
 555    return buffer;
 556 }
 557
 558 static int
 559 image_get_buffers(__DRIdrawable *driDrawable,
 560                   unsigned int format,
 561                   uint32_t *stamp,
 562                   void *loaderPrivate,
 563                   uint32_t buffer_mask,
 564                   struct __DRIimageList *buffers)
 565 {
 566    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 567
 568    if (update_buffers(dri2_surf) < 0)
 569       return 0;
 570
 571    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 572    buffers->back = dri2_surf->back->dri_image;
 573
 574    return 1;
 575 }
 576
 577 static void
 578 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 579 {
 580    (void) driDrawable;
 581    (void) loaderPrivate;
 582 }
 583
 584 static const __DRIimageLoaderExtension image_loader_extension = {
 585    .base = { __DRI_IMAGE_LOADER, 1 },
 586
 587    .getBuffers          = image_get_buffers,
 588    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 589 };
 590
 591 static void
 592 wayland_throttle_callback(void *data,
 593                           struct wl_callback *callback,
 594                           uint32_t time)
 595 {
 596    struct dri2_egl_surface *dri2_surf = data;
 597
 598    dri2_surf->throttle_callback = NULL;
 599    wl_callback_destroy(callback);
 600 }
 601
 602 static const struct wl_callback_listener throttle_listener = {
 603    .done = wayland_throttle_callback
 604 };
 605
 606 static void
 607 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 608 {
 609    struct dri2_egl_display *dri2_dpy =
 610       dri2_egl_display(dri2_surf->base.Resource.Display);
 611    __DRIimage *image;
 612    int fd, stride, name;
 613
 614    if (dri2_surf->current->wl_buffer != NULL)
 615       return;
 616
 617    if (dri2_dpy->is_different_gpu) {
 618       image = dri2_surf->current->linear_copy;
 619    } else {
 620       image = dri2_surf->current->dri_image;
 621    }
 622    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 623       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 624       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 625
 626       dri2_surf->current->wl_buffer =
 627          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 628                                     fd,
 629                                     dri2_surf->base.Width,
 630                                     dri2_surf->base.Height,
 631                                     dri2_surf->format,
 632                                     0, stride,
 633                                     0, 0,
 634                                     0, 0);
 635       close(fd);
 636    } else {
 637       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 638       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 639
 640       dri2_surf->current->wl_buffer =
 641          wl_drm_create_buffer(dri2_dpy->wl_drm,
 642                               name,
 643                               dri2_surf->base.Width,
 644                               dri2_surf->base.Height,
 645                               stride,
 646                               dri2_surf->format);
 647    }
 648
 649    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 650                       dri2_dpy->wl_queue);
 651    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 652                           &wl_buffer_listener, dri2_surf);
 653 }
 654
 655 static EGLBoolean
 656 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 657                   const EGLint *rects,
 658                   EGLint n_rects)
 659 {
 660 /* The WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION macro and
 661  * wl_proxy_get_version() were both introduced in wayland 1.10.
 662  * Instead of bumping our wayland dependency we just make this
 663  * function conditional on the required 1.10 features, falling
 664  * back to old (correct but suboptimal) behaviour for older
 665  * wayland.
 666  */
 667 #ifdef WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION
 668    int i;
 669
 670    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_win->surface)
 671        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 672       return EGL_FALSE;
 673
 674    for (i = 0; i < n_rects; i++) {
 675       const int *rect = &rects[i * 4];
 676
 677       wl_surface_damage_buffer(dri2_surf->wl_win->surface,
 678                                rect[0],
 679                                dri2_surf->base.Height - rect[1] - rect[3],
 680                                rect[2], rect[3]);
 681    }
 682    return EGL_TRUE;
 683 #endif
 684    return EGL_FALSE;
 685 }
 686 /**
 687  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 688  */
 689 static EGLBoolean
 690 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 691                                  _EGLDisplay *disp,
 692                                  _EGLSurface *draw,
 693                                  const EGLint *rects,
 694                                  EGLint n_rects)
 695 {
 696    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 697    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 698    int i;
 699
 700    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 701       if (dri2_surf->color_buffers[i].age > 0)
 702          dri2_surf->color_buffers[i].age++;
 703
 704    /* Make sure we have a back buffer in case we're swapping without ever
 705     * rendering. */
 706    if (get_back_bo(dri2_surf) < 0) {
 707       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 708       return EGL_FALSE;
 709    }
 710
 711    if (draw->SwapInterval > 0) {
 712       dri2_surf->throttle_callback =
 713          wl_surface_frame(dri2_surf->wl_win->surface);
 714       wl_callback_add_listener(dri2_surf->throttle_callback,
 715                                &throttle_listener, dri2_surf);
 716       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 717                          dri2_dpy->wl_queue);
 718    }
 719
 720    dri2_surf->back->age = 1;
 721    dri2_surf->current = dri2_surf->back;
 722    dri2_surf->back = NULL;
 723
 724    create_wl_buffer(dri2_surf);
 725
 726    wl_surface_attach(dri2_surf->wl_win->surface,
 727                      dri2_surf->current->wl_buffer,
 728                      dri2_surf->dx, dri2_surf->dy);
 729
 730    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 731    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 732    /* reset resize growing parameters */
 733    dri2_surf->dx = 0;
 734    dri2_surf->dy = 0;
 735
 736    /* If the compositor doesn't support damage_buffer, we deliberately
 737     * ignore the damage region and post maximum damage, due to
 738     * https://bugs.freedesktop.org/78190 */
 739    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 740       wl_surface_damage(dri2_surf->wl_win->surface,
 741                         0, 0, INT32_MAX, INT32_MAX);
 742
 743    if (dri2_dpy->is_different_gpu) {
 744       _EGLContext *ctx = _eglGetCurrentContext();
 745       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 746       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 747                                  dri2_surf->current->linear_copy,
 748                                  dri2_surf->current->dri_image,
 749                                  0, 0, dri2_surf->base.Width,
 750                                  dri2_surf->base.Height,
 751                                  0, 0, dri2_surf->base.Width,
 752                                  dri2_surf->base.Height, 0);
 753    }
 754
 755    dri2_flush_drawable_for_swapbuffers(disp, draw);
 756    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 757
 758    wl_surface_commit(dri2_surf->wl_win->surface);
 759
 760    /* If we're not waiting for a frame callback then we'll at least throttle
 761     * to a sync callback so that we always give a chance for the compositor to
 762     * handle the commit and send a release event before checking for a free
 763     * buffer */
 764    if (dri2_surf->throttle_callback == NULL) {
 765       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
 766       wl_callback_add_listener(dri2_surf->throttle_callback,
 767                                &throttle_listener, dri2_surf);
 768       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 769                          dri2_dpy->wl_queue);
 770    }
 771
 772    wl_display_flush(dri2_dpy->wl_dpy);
 773
 774    return EGL_TRUE;
 775 }
 776
 777 static EGLint
 778 dri2_wl_query_buffer_age(_EGLDriver *drv,
 779                          _EGLDisplay *disp, _EGLSurface *surface)
 780 {
 781    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 782
 783    if (get_back_bo(dri2_surf) < 0) {
 784       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 785       return 0;
 786    }
 787
 788    return dri2_surf->back->age;
 789 }
 790
 791 static EGLBoolean
 792 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 793 {
 794    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 795 }
 796
 797 static struct wl_buffer *
 798 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 799                                           _EGLDisplay *disp,
 800                                           _EGLImage *img)
 801 {
 802    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 803    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 804    __DRIimage *image = dri2_img->dri_image;
 805    struct wl_buffer *buffer;
 806    int width, height, format, pitch;
 807    enum wl_drm_format wl_format;
 808
 809    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 810
 811    switch (format) {
 812    case __DRI_IMAGE_FORMAT_ARGB8888:
 813       if (!(dri2_dpy->formats & HAS_ARGB8888))
 814          goto bad_format;
 815       wl_format = WL_DRM_FORMAT_ARGB8888;
 816       break;
 817    case __DRI_IMAGE_FORMAT_XRGB8888:
 818       if (!(dri2_dpy->formats & HAS_XRGB8888))
 819          goto bad_format;
 820       wl_format = WL_DRM_FORMAT_XRGB8888;
 821       break;
 822    default:
 823       goto bad_format;
 824    }
 825
 826    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 827    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 828    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 829
 830    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 831       int fd;
 832
 833       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 834
 835       buffer =
 836          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 837                                     fd,
 838                                     width, height,
 839                                     wl_format,
 840                                     0, pitch,
 841                                     0, 0,
 842                                     0, 0);
 843
 844       close(fd);
 845    } else {
 846       int name;
 847
 848       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 849
 850       buffer =
 851          wl_drm_create_buffer(dri2_dpy->wl_drm,
 852                               name,
 853                               width, height,
 854                               pitch,
 855                               wl_format);
 856    }
 857
 858    /* The buffer object will have been created with our internal event queue
 859     * because it is using the wl_drm object as a proxy factory. We want the
 860     * buffer to be used by the application so we'll reset it to the display's
 861     * default event queue */
 862    if (buffer)
 863       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 864
 865    return buffer;
 866
 867 bad_format:
 868    _eglError(EGL_BAD_MATCH, "unsupported image format");
 869    return NULL;
 870 }
 871
 872 static int
 873 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 874 {
 875    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 876    int ret = 0;
 877
 878    if (dri2_dpy->is_render_node) {
 879       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 880                             "authenticate for render-nodes");
 881       return 0;
 882    }
 883    dri2_dpy->authenticated = 0;
 884
 885    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 886    if (roundtrip(dri2_dpy) < 0)
 887       ret = -1;
 888
 889    if (!dri2_dpy->authenticated)
 890       ret = -1;
 891
 892    /* reset authenticated */
 893    dri2_dpy->authenticated = 1;
 894
 895    return ret;
 896 }
 897
 898 static void
 899 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 900 {
 901    struct dri2_egl_display *dri2_dpy = data;
 902    drm_magic_t magic;
 903
 904    dri2_dpy->device_name = strdup(device);
 905    if (!dri2_dpy->device_name)
 906       return;
 907
 908    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 909    if (dri2_dpy->fd == -1) {
 910       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 911               dri2_dpy->device_name, strerror(errno));
 912       return;
 913    }
 914
 915    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 916       dri2_dpy->authenticated = 1;
 917    } else {
 918       drmGetMagic(dri2_dpy->fd, &magic);
 919       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 920    }
 921 }
 922
 923 static void
 924 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 925 {
 926    struct dri2_egl_display *dri2_dpy = data;
 927
 928    switch (format) {
 929    case WL_DRM_FORMAT_ARGB8888:
 930       dri2_dpy->formats |= HAS_ARGB8888;
 931       break;
 932    case WL_DRM_FORMAT_XRGB8888:
 933       dri2_dpy->formats |= HAS_XRGB8888;
 934       break;
 935    case WL_DRM_FORMAT_RGB565:
 936       dri2_dpy->formats |= HAS_RGB565;
 937       break;
 938    }
 939 }
 940
 941 static void
 942 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 943 {
 944    struct dri2_egl_display *dri2_dpy = data;
 945
 946    dri2_dpy->capabilities = value;
 947 }
 948
 949 static void
 950 drm_handle_authenticated(void *data, struct wl_drm *drm)
 951 {
 952    struct dri2_egl_display *dri2_dpy = data;
 953
 954    dri2_dpy->authenticated = 1;
 955 }
 956
 957 static const struct wl_drm_listener drm_listener = {
 958    .device = drm_handle_device,
 959    .format = drm_handle_format,
 960    .authenticated = drm_handle_authenticated,
 961    .capabilities = drm_handle_capabilities
 962 };
 963
 964 static void
 965 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 966                        const char *interface, uint32_t version)
 967 {
 968    struct dri2_egl_display *dri2_dpy = data;
 969
 970    if (version > 1)
 971       version = 2;
 972    if (strcmp(interface, "wl_drm") == 0) {
 973       dri2_dpy->wl_drm =
 974          wl_registry_bind(registry, name, &wl_drm_interface, version);
 975       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 976    }
 977 }
 978
 979 static void
 980 registry_handle_global_remove(void *data, struct wl_registry *registry,
 981                               uint32_t name)
 982 {
 983 }
 984
 985 static const struct wl_registry_listener registry_listener_drm = {
 986    .global = registry_handle_global_drm,
 987    .global_remove = registry_handle_global_remove
 988 };
 989
 990 static EGLBoolean
 991 dri2_wl_swap_interval(_EGLDriver *drv,
 992                    _EGLDisplay *disp,
 993                    _EGLSurface *surf,
 994                    EGLint interval)
 995 {
 996    if (interval > surf->Config->MaxSwapInterval)
 997       interval = surf->Config->MaxSwapInterval;
 998    else if (interval < surf->Config->MinSwapInterval)
 999       interval = surf->Config->MinSwapInterval;
1000
1001    surf->SwapInterval = interval;
1002
1003    return EGL_TRUE;
1004 }
1005
1006 static void
1007 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1008 {
1009    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1010
1011    /* We can't use values greater than 1 on Wayland because we are using the
1012     * frame callback to synchronise the frame and the only way we be sure to
1013     * get a frame callback is to attach a new buffer. Therefore we can't just
1014     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1015
1016    if (dri2_dpy->config)
1017       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1018                                      "vblank_mode", &vblank_mode);
1019    switch (vblank_mode) {
1020    case DRI_CONF_VBLANK_NEVER:
1021       dri2_dpy->min_swap_interval = 0;
1022       dri2_dpy->max_swap_interval = 0;
1023       dri2_dpy->default_swap_interval = 0;
1024       break;
1025    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1026       dri2_dpy->min_swap_interval = 1;
1027       dri2_dpy->max_swap_interval = 1;
1028       dri2_dpy->default_swap_interval = 1;
1029       break;
1030    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1031       dri2_dpy->min_swap_interval = 0;
1032       dri2_dpy->max_swap_interval = 1;
1033       dri2_dpy->default_swap_interval = 0;
1034       break;
1035    default:
1036    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1037       dri2_dpy->min_swap_interval = 0;
1038       dri2_dpy->max_swap_interval = 1;
1039       dri2_dpy->default_swap_interval = 1;
1040       break;
1041    }
1042 }
1043
1044 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1045    .authenticate = dri2_wl_authenticate,
1046    .create_window_surface = dri2_wl_create_window_surface,
1047    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1048    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1049    .destroy_surface = dri2_wl_destroy_surface,
1050    .create_image = dri2_create_image_khr,
1051    .swap_interval = dri2_wl_swap_interval,
1052    .swap_buffers = dri2_wl_swap_buffers,
1053    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1054    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1055    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1056    .copy_buffers = dri2_fallback_copy_buffers,
1057    .query_buffer_age = dri2_wl_query_buffer_age,
1058    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1059    .get_sync_values = dri2_fallback_get_sync_values,
1060    .get_dri_drawable = dri2_surface_get_dri_drawable,
1061 };
1062
1063 static EGLBoolean
1064 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1065 {
1066    struct dri2_egl_display *dri2_dpy;
1067    const __DRIconfig *config;
1068    uint32_t types;
1069    int i;
1070    static const unsigned int argb_masks[4] =
1071       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1072    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1073    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1074
1075    loader_set_logger(_eglLog);
1076
1077    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1078    if (!dri2_dpy)
1079       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1080
1081    disp->DriverData = (void *) dri2_dpy;
1082    if (disp->PlatformDisplay == NULL) {
1083       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1084       if (dri2_dpy->wl_dpy == NULL)
1085          goto cleanup_dpy;
1086       dri2_dpy->own_device = 1;
1087    } else {
1088       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1089    }
1090
1091    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1092
1093    if (dri2_dpy->own_device)
1094       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1095
1096    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1097    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1098                       dri2_dpy->wl_queue);
1099    wl_registry_add_listener(dri2_dpy->wl_registry,
1100                             &registry_listener_drm, dri2_dpy);
1101    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1102       goto cleanup_registry;
1103
1104    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1105       goto cleanup_drm;
1106
1107    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1108       goto cleanup_fd;
1109
1110    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1111                                                &dri2_dpy->is_different_gpu);
1112    if (dri2_dpy->is_different_gpu) {
1113       free(dri2_dpy->device_name);
1114       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1115       if (!dri2_dpy->device_name) {
1116          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1117                                   "for requested GPU");
1118          goto cleanup_fd;
1119       }
1120    }
1121
1122    /* we have to do the check now, because loader_get_user_preferred_fd
1123     * will return a render-node when the requested gpu is different
1124     * to the server, but also if the client asks for the same gpu than
1125     * the server by requesting its pci-id */
1126    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1127
1128    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
1129    if (dri2_dpy->driver_name == NULL) {
1130       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1131       goto cleanup_fd;
1132    }
1133
1134    if (!dri2_load_driver(disp))
1135       goto cleanup_driver_name;
1136
1137    dri2_dpy->extensions[0] = &image_loader_extension.base;
1138    dri2_dpy->extensions[1] = &image_lookup_extension.base;
1139    dri2_dpy->extensions[2] = &use_invalidate.base;
1140
1141    /* render nodes cannot use Gem names, and thus do not support
1142     * the __DRI_DRI2_LOADER extension */
1143    if (!dri2_dpy->is_render_node) {
1144       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1145       dri2_dpy->dri2_loader_extension.base.version = 3;
1146       dri2_dpy->dri2_loader_extension.getBuffers = dri2_wl_get_buffers;
1147       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_wl_flush_front_buffer;
1148       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1149          dri2_wl_get_buffers_with_format;
1150       dri2_dpy->extensions[3] = &dri2_dpy->dri2_loader_extension.base;
1151       dri2_dpy->extensions[4] = NULL;
1152    } else
1153       dri2_dpy->extensions[3] = NULL;
1154
1155    if (!dri2_create_screen(disp))
1156       goto cleanup_driver;
1157
1158    dri2_wl_setup_swap_interval(dri2_dpy);
1159
1160    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1161     * createImageFromFds support indicates that Prime export/import
1162     * is supported by the driver. Fall back to
1163     * gem names if we don't have Prime support. */
1164
1165    if (dri2_dpy->image->base.version < 7 ||
1166        dri2_dpy->image->createImageFromFds == NULL)
1167       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1168
1169    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1170     * The server needs to accept them */
1171    if (dri2_dpy->is_render_node &&
1172        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1173       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1174       goto cleanup_screen;
1175    }
1176
1177    if (dri2_dpy->is_different_gpu &&
1178        (dri2_dpy->image->base.version < 9 ||
1179         dri2_dpy->image->blitImage == NULL)) {
1180       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1181                             "Image extension in the driver is not "
1182                             "compatible. Version 9 or later and blitImage() "
1183                             "are required");
1184       goto cleanup_screen;
1185    }
1186
1187    types = EGL_WINDOW_BIT;
1188    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1189       config = dri2_dpy->driver_configs[i];
1190       if (dri2_dpy->formats & HAS_XRGB8888)
1191          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1192       if (dri2_dpy->formats & HAS_ARGB8888)
1193          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1194       if (dri2_dpy->formats & HAS_RGB565)
1195         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1196    }
1197
1198    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1199    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1200     * because the buffer of the EGLImage has likely a tiling mode the server
1201     * gpu won't support. These is no way to check for now. Thus do not support the
1202     * extension */
1203    if (!dri2_dpy->is_different_gpu) {
1204       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1205    } else {
1206       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1207          dri2_fallback_create_wayland_buffer_from_image;
1208    }
1209    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1210
1211    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1212
1213    /* Fill vtbl last to prevent accidentally calling virtual function during
1214     * initialization.
1215     */
1216    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1217
1218    return EGL_TRUE;
1219
1220  cleanup_screen:
1221    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1222  cleanup_driver:
1223    dlclose(dri2_dpy->driver);
1224  cleanup_driver_name:
1225    free(dri2_dpy->driver_name);
1226  cleanup_fd:
1227    close(dri2_dpy->fd);
1228  cleanup_drm:
1229    free(dri2_dpy->device_name);
1230    wl_drm_destroy(dri2_dpy->wl_drm);
1231  cleanup_registry:
1232    wl_registry_destroy(dri2_dpy->wl_registry);
1233    wl_event_queue_destroy(dri2_dpy->wl_queue);
1234  cleanup_dpy:
1235    free(dri2_dpy);
1236    disp->DriverData = NULL;
1237
1238    return EGL_FALSE;
1239 }
1240
1241 static int
1242 dri2_wl_swrast_get_stride_for_format(int format, int w)
1243 {
1244    if (format == WL_SHM_FORMAT_RGB565)
1245       return 2 * w;
1246    else /* ARGB8888 || XRGB8888 */
1247       return 4 * w;
1248 }
1249
1250 /*
1251  * Taken from weston shared/os-compatibility.c
1252  */
1253
1254 #ifndef HAVE_MKOSTEMP
1255
1256 static int
1257 set_cloexec_or_close(int fd)
1258 {
1259    long flags;
1260
1261    if (fd == -1)
1262       return -1;
1263
1264    flags = fcntl(fd, F_GETFD);
1265    if (flags == -1)
1266       goto err;
1267
1268    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1269       goto err;
1270
1271    return fd;
1272
1273 err:
1274    close(fd);
1275    return -1;
1276 }
1277
1278 #endif
1279
1280 /*
1281  * Taken from weston shared/os-compatibility.c
1282  */
1283
1284 static int
1285 create_tmpfile_cloexec(char *tmpname)
1286 {
1287    int fd;
1288
1289 #ifdef HAVE_MKOSTEMP
1290    fd = mkostemp(tmpname, O_CLOEXEC);
1291    if (fd >= 0)
1292       unlink(tmpname);
1293 #else
1294    fd = mkstemp(tmpname);
1295    if (fd >= 0) {
1296       fd = set_cloexec_or_close(fd);
1297       unlink(tmpname);
1298    }
1299 #endif
1300
1301    return fd;
1302 }
1303
1304 /*
1305  * Taken from weston shared/os-compatibility.c
1306  *
1307  * Create a new, unique, anonymous file of the given size, and
1308  * return the file descriptor for it. The file descriptor is set
1309  * CLOEXEC. The file is immediately suitable for mmap()'ing
1310  * the given size at offset zero.
1311  *
1312  * The file should not have a permanent backing store like a disk,
1313  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1314  *
1315  * The file name is deleted from the file system.
1316  *
1317  * The file is suitable for buffer sharing between processes by
1318  * transmitting the file descriptor over Unix sockets using the
1319  * SCM_RIGHTS methods.
1320  *
1321  * If the C library implements posix_fallocate(), it is used to
1322  * guarantee that disk space is available for the file at the
1323  * given size. If disk space is insufficent, errno is set to ENOSPC.
1324  * If posix_fallocate() is not supported, program may receive
1325  * SIGBUS on accessing mmap()'ed file contents instead.
1326  */
1327 static int
1328 os_create_anonymous_file(off_t size)
1329 {
1330    static const char template[] = "/mesa-shared-XXXXXX";
1331    const char *path;
1332    char *name;
1333    int fd;
1334    int ret;
1335
1336    path = getenv("XDG_RUNTIME_DIR");
1337    if (!path) {
1338       errno = ENOENT;
1339       return -1;
1340    }
1341
1342    name = malloc(strlen(path) + sizeof(template));
1343    if (!name)
1344       return -1;
1345
1346    strcpy(name, path);
1347    strcat(name, template);
1348
1349    fd = create_tmpfile_cloexec(name);
1350
1351    free(name);
1352
1353    if (fd < 0)
1354       return -1;
1355
1356    ret = ftruncate(fd, size);
1357    if (ret < 0) {
1358       close(fd);
1359       return -1;
1360    }
1361
1362    return fd;
1363 }
1364
1365
1366 static EGLBoolean
1367 dri2_wl_swrast_allocate_buffer(struct dri2_egl_display *dri2_dpy,
1368                                int format, int w, int h,
1369                                void **data, int *size,
1370                                struct wl_buffer **buffer)
1371 {
1372    struct wl_shm_pool *pool;
1373    int fd, stride, size_map;
1374    void *data_map;
1375
1376    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1377    size_map = h * stride;
1378
1379    /* Create a sharable buffer */
1380    fd = os_create_anonymous_file(size_map);
1381    if (fd < 0)
1382       return EGL_FALSE;
1383
1384    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1385    if (data_map == MAP_FAILED) {
1386       close(fd);
1387       return EGL_FALSE;
1388    }
1389
1390    /* Share it in a wl_buffer */
1391    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1392    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1393    wl_shm_pool_destroy(pool);
1394    close(fd);
1395
1396    *data = data_map;
1397    *size = size_map;
1398    return EGL_TRUE;
1399 }
1400
1401 static int
1402 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1403 {
1404    struct dri2_egl_display *dri2_dpy =
1405       dri2_egl_display(dri2_surf->base.Resource.Display);
1406    int i;
1407
1408    /* we need to do the following operations only once per frame */
1409    if (dri2_surf->back)
1410       return 0;
1411
1412    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1413        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1414
1415       dri2_wl_release_buffers(dri2_surf);
1416
1417       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1418       dri2_surf->base.Height = dri2_surf->wl_win->height;
1419       dri2_surf->dx = dri2_surf->wl_win->dx;
1420       dri2_surf->dy = dri2_surf->wl_win->dy;
1421       dri2_surf->current = NULL;
1422    }
1423
1424    /* find back buffer */
1425
1426    /* We always want to throttle to some event (either a frame callback or
1427     * a sync request) after the commit so that we can be sure the
1428     * compositor has had a chance to handle it and send us a release event
1429     * before we look for a free buffer */
1430    while (dri2_surf->throttle_callback != NULL)
1431       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1432                                     dri2_dpy->wl_queue) == -1)
1433          return -1;
1434
1435    /* try get free buffer already created */
1436    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1437       if (!dri2_surf->color_buffers[i].locked &&
1438           dri2_surf->color_buffers[i].wl_buffer) {
1439           dri2_surf->back = &dri2_surf->color_buffers[i];
1440           break;
1441       }
1442    }
1443
1444    /* else choose any another free location */
1445    if (!dri2_surf->back) {
1446       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1447          if (!dri2_surf->color_buffers[i].locked) {
1448              dri2_surf->back = &dri2_surf->color_buffers[i];
1449              if (!dri2_wl_swrast_allocate_buffer(dri2_dpy,
1450                                                  dri2_surf->format,
1451                                                  dri2_surf->base.Width,
1452                                                  dri2_surf->base.Height,
1453                                                  &dri2_surf->back->data,
1454                                                  &dri2_surf->back->data_size,
1455                                                  &dri2_surf->back->wl_buffer)) {
1456                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1457                  return -1;
1458              }
1459              wl_proxy_set_queue((struct wl_proxy *) dri2_surf->back->wl_buffer,
1460                                 dri2_dpy->wl_queue);
1461              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1462                                     &wl_buffer_listener, dri2_surf);
1463              break;
1464          }
1465       }
1466    }
1467
1468    if (!dri2_surf->back) {
1469       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1470       return -1;
1471    }
1472
1473    dri2_surf->back->locked = 1;
1474
1475    /* If we have an extra unlocked buffer at this point, we had to do triple
1476     * buffering for a while, but now can go back to just double buffering.
1477     * That means we can free any unlocked buffer now. */
1478    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1479       if (!dri2_surf->color_buffers[i].locked &&
1480           dri2_surf->color_buffers[i].wl_buffer) {
1481          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1482          munmap(dri2_surf->color_buffers[i].data,
1483                 dri2_surf->color_buffers[i].data_size);
1484          dri2_surf->color_buffers[i].wl_buffer = NULL;
1485          dri2_surf->color_buffers[i].data = NULL;
1486       }
1487    }
1488
1489    return 0;
1490 }
1491
1492 static void*
1493 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1494 {
1495    /* if there has been a resize: */
1496    if (!dri2_surf->current)
1497       return NULL;
1498
1499    return dri2_surf->current->data;
1500 }
1501
1502 static void*
1503 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1504 {
1505    assert(dri2_surf->back);
1506    return dri2_surf->back->data;
1507 }
1508
1509 static void
1510 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1511 {
1512    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1513
1514    if (dri2_surf->base.SwapInterval > 0) {
1515       dri2_surf->throttle_callback =
1516          wl_surface_frame(dri2_surf->wl_win->surface);
1517       wl_callback_add_listener(dri2_surf->throttle_callback,
1518                                &throttle_listener, dri2_surf);
1519       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1520                          dri2_dpy->wl_queue);
1521    }
1522
1523    dri2_surf->current = dri2_surf->back;
1524    dri2_surf->back = NULL;
1525
1526    wl_surface_attach(dri2_surf->wl_win->surface,
1527                      dri2_surf->current->wl_buffer,
1528                      dri2_surf->dx, dri2_surf->dy);
1529
1530    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1531    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1532    /* reset resize growing parameters */
1533    dri2_surf->dx = 0;
1534    dri2_surf->dy = 0;
1535
1536    wl_surface_damage(dri2_surf->wl_win->surface,
1537                      0, 0, INT32_MAX, INT32_MAX);
1538    wl_surface_commit(dri2_surf->wl_win->surface);
1539
1540    /* If we're not waiting for a frame callback then we'll at least throttle
1541     * to a sync callback so that we always give a chance for the compositor to
1542     * handle the commit and send a release event before checking for a free
1543     * buffer */
1544    if (dri2_surf->throttle_callback == NULL) {
1545       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
1546       wl_callback_add_listener(dri2_surf->throttle_callback,
1547                                &throttle_listener, dri2_surf);
1548       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1549                          dri2_dpy->wl_queue);
1550    }
1551
1552    wl_display_flush(dri2_dpy->wl_dpy);
1553 }
1554
1555 static void
1556 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1557                                  int *x, int *y, int *w, int *h,
1558                                  void *loaderPrivate)
1559 {
1560    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1561
1562    (void) swrast_update_buffers(dri2_surf);
1563    *x = 0;
1564    *y = 0;
1565    *w = dri2_surf->base.Width;
1566    *h = dri2_surf->base.Height;
1567 }
1568
1569 static void
1570 dri2_wl_swrast_get_image(__DRIdrawable * read,
1571                          int x, int y, int w, int h,
1572                          char *data, void *loaderPrivate)
1573 {
1574    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1575    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1576    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1577    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1578    int dst_stride = copy_width;
1579    char *src, *dst;
1580
1581    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1582    if (!src) {
1583       memset(data, 0, copy_width * h);
1584       return;
1585    }
1586
1587    assert(data != src);
1588    assert(copy_width <= src_stride);
1589
1590    src += x_offset;
1591    src += y * src_stride;
1592    dst = data;
1593
1594    if (copy_width > src_stride-x_offset)
1595       copy_width = src_stride-x_offset;
1596    if (h > dri2_surf->base.Height-y)
1597       h = dri2_surf->base.Height-y;
1598
1599    for (; h>0; h--) {
1600       memcpy(dst, src, copy_width);
1601       src += src_stride;
1602       dst += dst_stride;
1603    }
1604 }
1605
1606 static void
1607 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1608                          int x, int y, int w, int h, int stride,
1609                          char *data, void *loaderPrivate)
1610 {
1611    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1612    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1613    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1614    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1615    char *src, *dst;
1616
1617    assert(copy_width <= stride);
1618
1619    (void) swrast_update_buffers(dri2_surf);
1620    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1621
1622    /* partial copy, copy old content */
1623    if (copy_width < dst_stride)
1624       dri2_wl_swrast_get_image(draw, 0, 0,
1625                                dri2_surf->base.Width, dri2_surf->base.Height,
1626                                dst, loaderPrivate);
1627
1628    dst += x_offset;
1629    dst += y * dst_stride;
1630
1631    src = data;
1632
1633    /* drivers expect we do these checks (and some rely on it) */
1634    if (copy_width > dst_stride-x_offset)
1635       copy_width = dst_stride-x_offset;
1636    if (h > dri2_surf->base.Height-y)
1637       h = dri2_surf->base.Height-y;
1638
1639    for (; h>0; h--) {
1640       memcpy(dst, src, copy_width);
1641       src += stride;
1642       dst += dst_stride;
1643    }
1644    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1645 }
1646
1647 static void
1648 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1649                          int x, int y, int w, int h,
1650                          char *data, void *loaderPrivate)
1651 {
1652    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1653    int stride;
1654
1655    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1656    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1657                              stride, data, loaderPrivate);
1658 }
1659
1660 /**
1661  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
1662  */
1663 static _EGLSurface *
1664 dri2_wl_swrast_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
1665                                      _EGLConfig *conf, void *native_window,
1666                                      const EGLint *attrib_list)
1667 {
1668    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1669    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
1670    struct wl_egl_window *window = native_window;
1671    struct dri2_egl_surface *dri2_surf;
1672    const __DRIconfig *config;
1673
1674    (void) drv;
1675
1676    dri2_surf = calloc(1, sizeof *dri2_surf);
1677    if (!dri2_surf) {
1678       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
1679       return NULL;
1680    }
1681
1682    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
1683       goto cleanup_surf;
1684
1685    if (conf->RedSize == 5)
1686       dri2_surf->format = WL_SHM_FORMAT_RGB565;
1687    else if (conf->AlphaSize == 0)
1688       dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
1689    else
1690       dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
1691
1692    dri2_surf->wl_win = window;
1693
1694    dri2_surf->base.Width = -1;
1695    dri2_surf->base.Height = -1;
1696
1697    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
1698                                 dri2_surf->base.GLColorspace);
1699
1700    dri2_surf->dri_drawable =
1701       (*dri2_dpy->swrast->createNewDrawable)(dri2_dpy->dri_screen,
1702                                              config, dri2_surf);
1703    if (dri2_surf->dri_drawable == NULL) {
1704       _eglError(EGL_BAD_ALLOC, "swrast->createNewDrawable");
1705       goto cleanup_dri_drawable;
1706    }
1707
1708    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
1709                          dri2_dpy->default_swap_interval);
1710
1711    return &dri2_surf->base;
1712
1713  cleanup_dri_drawable:
1714    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
1715  cleanup_surf:
1716    free(dri2_surf);
1717
1718    return NULL;
1719 }
1720
1721 static EGLBoolean
1722 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1723 {
1724    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1725    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1726
1727    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1728    return EGL_TRUE;
1729 }
1730
1731 static void
1732 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1733 {
1734    struct dri2_egl_display *dri2_dpy = data;
1735
1736    switch (format) {
1737    case WL_SHM_FORMAT_ARGB8888:
1738       dri2_dpy->formats |= HAS_ARGB8888;
1739       break;
1740    case WL_SHM_FORMAT_XRGB8888:
1741       dri2_dpy->formats |= HAS_XRGB8888;
1742       break;
1743    case WL_SHM_FORMAT_RGB565:
1744       dri2_dpy->formats |= HAS_RGB565;
1745       break;
1746    }
1747 }
1748
1749 static const struct wl_shm_listener shm_listener = {
1750    .format = shm_handle_format
1751 };
1752
1753 static void
1754 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1755                               const char *interface, uint32_t version)
1756 {
1757    struct dri2_egl_display *dri2_dpy = data;
1758
1759    if (strcmp(interface, "wl_shm") == 0) {
1760       dri2_dpy->wl_shm =
1761          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1762       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1763    }
1764 }
1765
1766 static const struct wl_registry_listener registry_listener_swrast = {
1767    .global = registry_handle_global_swrast,
1768    .global_remove = registry_handle_global_remove
1769 };
1770
1771 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1772    .authenticate = NULL,
1773    .create_window_surface = dri2_wl_swrast_create_window_surface,
1774    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1775    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1776    .destroy_surface = dri2_wl_destroy_surface,
1777    .create_image = dri2_fallback_create_image_khr,
1778    .swap_interval = dri2_wl_swap_interval,
1779    .swap_buffers = dri2_wl_swrast_swap_buffers,
1780    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1781    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1782    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1783    .copy_buffers = dri2_fallback_copy_buffers,
1784    .query_buffer_age = dri2_fallback_query_buffer_age,
1785    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1786    .get_sync_values = dri2_fallback_get_sync_values,
1787    .get_dri_drawable = dri2_surface_get_dri_drawable,
1788 };
1789
1790 static EGLBoolean
1791 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1792 {
1793    struct dri2_egl_display *dri2_dpy;
1794    const __DRIconfig *config;
1795    uint32_t types;
1796    int i;
1797    static const unsigned int argb_masks[4] =
1798       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1799    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1800    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1801
1802    loader_set_logger(_eglLog);
1803
1804    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1805    if (!dri2_dpy)
1806       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1807
1808    disp->DriverData = (void *) dri2_dpy;
1809    if (disp->PlatformDisplay == NULL) {
1810       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1811       if (dri2_dpy->wl_dpy == NULL)
1812          goto cleanup_dpy;
1813       dri2_dpy->own_device = 1;
1814    } else {
1815       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1816    }
1817
1818    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1819
1820    if (dri2_dpy->own_device)
1821       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1822
1823    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1824    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1825                       dri2_dpy->wl_queue);
1826    wl_registry_add_listener(dri2_dpy->wl_registry,
1827                             &registry_listener_swrast, dri2_dpy);
1828
1829    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1830       goto cleanup_registry;
1831
1832    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1833       goto cleanup_shm;
1834
1835    dri2_dpy->fd = -1;
1836    dri2_dpy->driver_name = strdup("swrast");
1837    if (!dri2_load_driver_swrast(disp))
1838       goto cleanup_shm;
1839
1840    dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
1841    dri2_dpy->swrast_loader_extension.base.version = 2;
1842    dri2_dpy->swrast_loader_extension.getDrawableInfo = dri2_wl_swrast_get_drawable_info;
1843    dri2_dpy->swrast_loader_extension.putImage = dri2_wl_swrast_put_image;
1844    dri2_dpy->swrast_loader_extension.getImage = dri2_wl_swrast_get_image;
1845    dri2_dpy->swrast_loader_extension.putImage2 = dri2_wl_swrast_put_image2;
1846
1847    dri2_dpy->extensions[0] = &dri2_dpy->swrast_loader_extension.base;
1848    dri2_dpy->extensions[1] = NULL;
1849
1850    if (!dri2_create_screen(disp))
1851       goto cleanup_driver;
1852
1853    dri2_wl_setup_swap_interval(dri2_dpy);
1854
1855    types = EGL_WINDOW_BIT;
1856    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1857       config = dri2_dpy->driver_configs[i];
1858       if (dri2_dpy->formats & HAS_XRGB8888)
1859          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1860       if (dri2_dpy->formats & HAS_ARGB8888)
1861          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1862       if (dri2_dpy->formats & HAS_RGB565)
1863         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1864    }
1865
1866    /* Fill vtbl last to prevent accidentally calling virtual function during
1867     * initialization.
1868     */
1869    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1870
1871    return EGL_TRUE;
1872
1873  cleanup_driver:
1874    dlclose(dri2_dpy->driver);
1875  cleanup_shm:
1876    wl_shm_destroy(dri2_dpy->wl_shm);
1877  cleanup_registry:
1878    wl_registry_destroy(dri2_dpy->wl_registry);
1879    wl_event_queue_destroy(dri2_dpy->wl_queue);
1880  cleanup_dpy:
1881    free(dri2_dpy);
1882    disp->DriverData = NULL;
1883
1884    return EGL_FALSE;
1885 }
1886
1887 EGLBoolean
1888 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1889 {
1890    EGLBoolean initialized = EGL_TRUE;
1891
1892    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1893
1894    if (hw_accel) {
1895       if (!dri2_initialize_wayland_drm(drv, disp)) {
1896          initialized = dri2_initialize_wayland_swrast(drv, disp);
1897       }
1898    } else {
1899       initialized = dri2_initialize_wayland_swrast(drv, disp);
1900    }
1901
1902    return initialized;
1903
1904 }