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    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 struct wl_buffer_listener wl_buffer_listener = {
 108    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
 134    (void) drv;
 135
 136    dri2_surf = calloc(1, sizeof *dri2_surf);
 137    if (!dri2_surf) {
 138       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 139       return NULL;
 140    }
 141
 142    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 143       goto cleanup_surf;
 144
 145    if (conf->RedSize == 5)
 146       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 147    else if (conf->AlphaSize == 0)
 148       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 149    else
 150       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 151
 152    dri2_surf->wl_win = window;
 153
 154    dri2_surf->wl_win->private = dri2_surf;
 155    dri2_surf->wl_win->resize_callback = resize_callback;
 156
 157    dri2_surf->base.Width =  -1;
 158    dri2_surf->base.Height = -1;
 159
 160    dri2_surf->dri_drawable =
 161       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 162                                             dri2_conf->dri_double_config,
 163                                             dri2_surf);
 164    if (dri2_surf->dri_drawable == NULL) {
 165       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 166       goto cleanup_dri_drawable;
 167    }
 168
 169    return &dri2_surf->base;
 170
 171  cleanup_dri_drawable:
 172    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 173  cleanup_surf:
 174    free(dri2_surf);
 175
 176    return NULL;
 177 }
 178
 179 /**
 180  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 181  */
 182 static _EGLSurface *
 183 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 184                               _EGLConfig *conf, void *native_window,
 185                               const EGLint *attrib_list)
 186 {
 187    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 188    _EGLSurface *surf;
 189
 190    surf = dri2_wl_create_surface(drv, disp, conf, native_window, attrib_list);
 191
 192    if (surf != NULL)
 193       dri2_wl_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 194
 195    return surf;
 196 }
 197
 198 static _EGLSurface *
 199 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 200                               _EGLConfig *conf, void *native_window,
 201                               const EGLint *attrib_list)
 202 {
 203    /* From the EGL_EXT_platform_wayland spec, version 3:
 204     *
 205     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 206     *   that belongs to Wayland. Any such call fails and generates
 207     *   EGL_BAD_PARAMETER.
 208     */
 209    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 210              "Wayland");
 211    return NULL;
 212 }
 213
 214 /**
 215  * Called via eglDestroySurface(), drv->API.DestroySurface().
 216  */
 217 static EGLBoolean
 218 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 219 {
 220    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 221    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 222    int i;
 223
 224    (void) drv;
 225
 226    if (!_eglPutSurface(surf))
 227       return EGL_TRUE;
 228
 229    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 230
 231    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 232       if (dri2_surf->color_buffers[i].wl_buffer)
 233          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 234       if (dri2_surf->color_buffers[i].dri_image)
 235          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 236       if (dri2_surf->color_buffers[i].linear_copy)
 237          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 238       if (dri2_surf->color_buffers[i].data)
 239          munmap(dri2_surf->color_buffers[i].data,
 240                 dri2_surf->color_buffers[i].data_size);
 241    }
 242
 243    if (dri2_dpy->dri2) {
 244       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 245          if (dri2_surf->dri_buffers[i] &&
 246              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 247             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 248                                           dri2_surf->dri_buffers[i]);
 249    }
 250
 251    if (dri2_surf->throttle_callback)
 252       wl_callback_destroy(dri2_surf->throttle_callback);
 253
 254    dri2_surf->wl_win->private = NULL;
 255    dri2_surf->wl_win->resize_callback = NULL;
 256
 257    free(surf);
 258
 259    return EGL_TRUE;
 260 }
 261
 262 static void
 263 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 264 {
 265    struct dri2_egl_display *dri2_dpy =
 266       dri2_egl_display(dri2_surf->base.Resource.Display);
 267    int i;
 268
 269    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 270       if (dri2_surf->color_buffers[i].wl_buffer &&
 271           !dri2_surf->color_buffers[i].locked)
 272          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 273       if (dri2_surf->color_buffers[i].dri_image)
 274          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 275       if (dri2_surf->color_buffers[i].linear_copy)
 276          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 277       if (dri2_surf->color_buffers[i].data)
 278          munmap(dri2_surf->color_buffers[i].data,
 279                 dri2_surf->color_buffers[i].data_size);
 280
 281       dri2_surf->color_buffers[i].wl_buffer = NULL;
 282       dri2_surf->color_buffers[i].dri_image = NULL;
 283       dri2_surf->color_buffers[i].linear_copy = NULL;
 284       dri2_surf->color_buffers[i].data = NULL;
 285       dri2_surf->color_buffers[i].locked = 0;
 286    }
 287
 288    if (dri2_dpy->dri2) {
 289       for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 290          if (dri2_surf->dri_buffers[i] &&
 291              dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 292             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 293                                           dri2_surf->dri_buffers[i]);
 294    }
 295 }
 296
 297 static int
 298 get_back_bo(struct dri2_egl_surface *dri2_surf)
 299 {
 300    struct dri2_egl_display *dri2_dpy =
 301       dri2_egl_display(dri2_surf->base.Resource.Display);
 302    int i;
 303    unsigned int dri_image_format;
 304
 305    /* currently supports three WL DRM formats,
 306     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 307     * and WL_DRM_FORMAT_RGB565
 308     */
 309    switch (dri2_surf->format) {
 310    case WL_DRM_FORMAT_ARGB8888:
 311       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 312       break;
 313    case WL_DRM_FORMAT_XRGB8888:
 314       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 315       break;
 316    case WL_DRM_FORMAT_RGB565:
 317       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 318       break;
 319    default:
 320       /* format is not supported */
 321       return -1;
 322    }
 323
 324    /* We always want to throttle to some event (either a frame callback or
 325     * a sync request) after the commit so that we can be sure the
 326     * compositor has had a chance to handle it and send us a release event
 327     * before we look for a free buffer */
 328    while (dri2_surf->throttle_callback != NULL)
 329       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 330                                     dri2_dpy->wl_queue) == -1)
 331          return -1;
 332
 333    if (dri2_surf->back == NULL) {
 334       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 335          /* Get an unlocked buffer, preferrably one with a dri_buffer
 336           * already allocated. */
 337          if (dri2_surf->color_buffers[i].locked)
 338             continue;
 339          if (dri2_surf->back == NULL)
 340             dri2_surf->back = &dri2_surf->color_buffers[i];
 341          else if (dri2_surf->back->dri_image == NULL)
 342             dri2_surf->back = &dri2_surf->color_buffers[i];
 343       }
 344    }
 345
 346    if (dri2_surf->back == NULL)
 347       return -1;
 348
 349    if (dri2_dpy->is_different_gpu &&
 350        dri2_surf->back->linear_copy == NULL) {
 351        dri2_surf->back->linear_copy =
 352           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 353                                       dri2_surf->base.Width,
 354                                       dri2_surf->base.Height,
 355                                       dri_image_format,
 356                                       __DRI_IMAGE_USE_SHARE |
 357                                       __DRI_IMAGE_USE_LINEAR,
 358                                       NULL);
 359       if (dri2_surf->back->linear_copy == NULL)
 360           return -1;
 361    }
 362
 363    if (dri2_surf->back->dri_image == NULL) {
 364       dri2_surf->back->dri_image =
 365          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 366                                       dri2_surf->base.Width,
 367                                       dri2_surf->base.Height,
 368                                       dri_image_format,
 369                                       dri2_dpy->is_different_gpu ?
 370                                          0 : __DRI_IMAGE_USE_SHARE,
 371                                       NULL);
 372       dri2_surf->back->age = 0;
 373    }
 374    if (dri2_surf->back->dri_image == NULL)
 375       return -1;
 376
 377    dri2_surf->back->locked = 1;
 378
 379    return 0;
 380 }
 381
 382
 383 static void
 384 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 385 {
 386    struct dri2_egl_display *dri2_dpy =
 387       dri2_egl_display(dri2_surf->base.Resource.Display);
 388    __DRIimage *image;
 389    int name, pitch;
 390
 391    image = dri2_surf->back->dri_image;
 392
 393    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 394    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 395
 396    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 397    buffer->name = name;
 398    buffer->pitch = pitch;
 399    buffer->cpp = 4;
 400    buffer->flags = 0;
 401 }
 402
 403 static int
 404 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 405            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 406 {
 407    struct dri2_egl_display *dri2_dpy =
 408       dri2_egl_display(dri2_surf->base.Resource.Display);
 409    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 410
 411    if (b == NULL) {
 412       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 413                                          attachment, format,
 414                                          dri2_surf->base.Width,
 415                                          dri2_surf->base.Height);
 416       dri2_surf->dri_buffers[attachment] = b;
 417    }
 418    if (b == NULL)
 419       return -1;
 420
 421    memcpy(buffer, b, sizeof *buffer);
 422
 423    return 0;
 424 }
 425
 426 static int
 427 update_buffers(struct dri2_egl_surface *dri2_surf)
 428 {
 429    struct dri2_egl_display *dri2_dpy =
 430       dri2_egl_display(dri2_surf->base.Resource.Display);
 431    int i;
 432
 433    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 434        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 435
 436       dri2_wl_release_buffers(dri2_surf);
 437
 438       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 439       dri2_surf->base.Height = dri2_surf->wl_win->height;
 440       dri2_surf->dx = dri2_surf->wl_win->dx;
 441       dri2_surf->dy = dri2_surf->wl_win->dy;
 442    }
 443
 444    if (get_back_bo(dri2_surf) < 0) {
 445       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 446       return -1;
 447    }
 448
 449    /* If we have an extra unlocked buffer at this point, we had to do triple
 450     * buffering for a while, but now can go back to just double buffering.
 451     * That means we can free any unlocked buffer now. */
 452    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 453       if (!dri2_surf->color_buffers[i].locked &&
 454           dri2_surf->color_buffers[i].wl_buffer) {
 455          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 456          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 457          if (dri2_dpy->is_different_gpu)
 458             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 459          dri2_surf->color_buffers[i].wl_buffer = NULL;
 460          dri2_surf->color_buffers[i].dri_image = NULL;
 461          dri2_surf->color_buffers[i].linear_copy = NULL;
 462       }
 463    }
 464
 465    return 0;
 466 }
 467
 468 static __DRIbuffer *
 469 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 470                                 int *width, int *height,
 471                                 unsigned int *attachments, int count,
 472                                 int *out_count, void *loaderPrivate)
 473 {
 474    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 475    int i, j;
 476
 477    if (update_buffers(dri2_surf) < 0)
 478       return NULL;
 479
 480    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 481       switch (attachments[i]) {
 482       case __DRI_BUFFER_BACK_LEFT:
 483          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 484          break;
 485       default:
 486          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 487                         &dri2_surf->buffers[j]) < 0) {
 488             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 489             return NULL;
 490          }
 491          break;
 492       }
 493    }
 494
 495    *out_count = j;
 496    if (j == 0)
 497            return NULL;
 498
 499    *width = dri2_surf->base.Width;
 500    *height = dri2_surf->base.Height;
 501
 502    return dri2_surf->buffers;
 503 }
 504
 505 static __DRIbuffer *
 506 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 507                     int *width, int *height,
 508                     unsigned int *attachments, int count,
 509                     int *out_count, void *loaderPrivate)
 510 {
 511    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 512    unsigned int *attachments_with_format;
 513    __DRIbuffer *buffer;
 514    unsigned int bpp;
 515
 516    int i;
 517
 518    switch (dri2_surf->format) {
 519    case WL_DRM_FORMAT_ARGB8888:
 520    case WL_DRM_FORMAT_XRGB8888:
 521       bpp = 32;
 522       break;
 523    case WL_DRM_FORMAT_RGB565:
 524       bpp = 16;
 525       break;
 526    default:
 527       /* format is not supported */
 528       return NULL;
 529    }
 530
 531    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 532    if (!attachments_with_format) {
 533       *out_count = 0;
 534       return NULL;
 535    }
 536
 537    for (i = 0; i < count; ++i) {
 538       attachments_with_format[2*i] = attachments[i];
 539       attachments_with_format[2*i + 1] = bpp;
 540    }
 541
 542    buffer =
 543       dri2_wl_get_buffers_with_format(driDrawable,
 544                                       width, height,
 545                                       attachments_with_format, count,
 546                                       out_count, loaderPrivate);
 547
 548    free(attachments_with_format);
 549
 550    return buffer;
 551 }
 552
 553 static int
 554 image_get_buffers(__DRIdrawable *driDrawable,
 555                   unsigned int format,
 556                   uint32_t *stamp,
 557                   void *loaderPrivate,
 558                   uint32_t buffer_mask,
 559                   struct __DRIimageList *buffers)
 560 {
 561    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 562
 563    if (update_buffers(dri2_surf) < 0)
 564       return 0;
 565
 566    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 567    buffers->back = dri2_surf->back->dri_image;
 568
 569    return 1;
 570 }
 571
 572 static void
 573 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 574 {
 575    (void) driDrawable;
 576    (void) loaderPrivate;
 577 }
 578
 579 static const __DRIimageLoaderExtension image_loader_extension = {
 580    .base = { __DRI_IMAGE_LOADER, 1 },
 581
 582    .getBuffers          = image_get_buffers,
 583    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 584 };
 585
 586 static void
 587 wayland_throttle_callback(void *data,
 588                           struct wl_callback *callback,
 589                           uint32_t time)
 590 {
 591    struct dri2_egl_surface *dri2_surf = data;
 592
 593    dri2_surf->throttle_callback = NULL;
 594    wl_callback_destroy(callback);
 595 }
 596
 597 static const struct wl_callback_listener throttle_listener = {
 598    wayland_throttle_callback
 599 };
 600
 601 static void
 602 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 603 {
 604    struct dri2_egl_display *dri2_dpy =
 605       dri2_egl_display(dri2_surf->base.Resource.Display);
 606    __DRIimage *image;
 607    int fd, stride, name;
 608
 609    if (dri2_surf->current->wl_buffer != NULL)
 610       return;
 611
 612    if (dri2_dpy->is_different_gpu) {
 613       image = dri2_surf->current->linear_copy;
 614    } else {
 615       image = dri2_surf->current->dri_image;
 616    }
 617    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 618       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 619       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 620
 621       dri2_surf->current->wl_buffer =
 622          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 623                                     fd,
 624                                     dri2_surf->base.Width,
 625                                     dri2_surf->base.Height,
 626                                     dri2_surf->format,
 627                                     0, stride,
 628                                     0, 0,
 629                                     0, 0);
 630       close(fd);
 631    } else {
 632       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 633       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 634
 635       dri2_surf->current->wl_buffer =
 636          wl_drm_create_buffer(dri2_dpy->wl_drm,
 637                               name,
 638                               dri2_surf->base.Width,
 639                               dri2_surf->base.Height,
 640                               stride,
 641                               dri2_surf->format);
 642    }
 643
 644    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 645                       dri2_dpy->wl_queue);
 646    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 647                           &wl_buffer_listener, dri2_surf);
 648 }
 649
 650 /**
 651  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 652  */
 653 static EGLBoolean
 654 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 655                                  _EGLDisplay *disp,
 656                                  _EGLSurface *draw,
 657                                  const EGLint *rects,
 658                                  EGLint n_rects)
 659 {
 660    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 661    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 662    int i;
 663
 664    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 665       if (dri2_surf->color_buffers[i].age > 0)
 666          dri2_surf->color_buffers[i].age++;
 667
 668    /* Make sure we have a back buffer in case we're swapping without ever
 669     * rendering. */
 670    if (get_back_bo(dri2_surf) < 0) {
 671       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 672       return EGL_FALSE;
 673    }
 674
 675    if (draw->SwapInterval > 0) {
 676       dri2_surf->throttle_callback =
 677          wl_surface_frame(dri2_surf->wl_win->surface);
 678       wl_callback_add_listener(dri2_surf->throttle_callback,
 679                                &throttle_listener, dri2_surf);
 680       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 681                          dri2_dpy->wl_queue);
 682    }
 683
 684    dri2_surf->back->age = 1;
 685    dri2_surf->current = dri2_surf->back;
 686    dri2_surf->back = NULL;
 687
 688    create_wl_buffer(dri2_surf);
 689
 690    wl_surface_attach(dri2_surf->wl_win->surface,
 691                      dri2_surf->current->wl_buffer,
 692                      dri2_surf->dx, dri2_surf->dy);
 693
 694    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 695    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 696    /* reset resize growing parameters */
 697    dri2_surf->dx = 0;
 698    dri2_surf->dy = 0;
 699
 700    if (n_rects == 0) {
 701       wl_surface_damage(dri2_surf->wl_win->surface,
 702                         0, 0, INT32_MAX, INT32_MAX);
 703    } else {
 704       for (i = 0; i < n_rects; i++) {
 705          const int *rect = &rects[i * 4];
 706          wl_surface_damage(dri2_surf->wl_win->surface,
 707                            rect[0],
 708                            dri2_surf->base.Height - rect[1] - rect[3],
 709                            rect[2], rect[3]);
 710       }
 711    }
 712
 713    if (dri2_dpy->is_different_gpu) {
 714       _EGLContext *ctx = _eglGetCurrentContext();
 715       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 716       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 717                                  dri2_surf->current->linear_copy,
 718                                  dri2_surf->current->dri_image,
 719                                  0, 0, dri2_surf->base.Width,
 720                                  dri2_surf->base.Height,
 721                                  0, 0, dri2_surf->base.Width,
 722                                  dri2_surf->base.Height, 0);
 723    }
 724
 725    dri2_flush_drawable_for_swapbuffers(disp, draw);
 726    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 727
 728    wl_surface_commit(dri2_surf->wl_win->surface);
 729
 730    /* If we're not waiting for a frame callback then we'll at least throttle
 731     * to a sync callback so that we always give a chance for the compositor to
 732     * handle the commit and send a release event before checking for a free
 733     * buffer */
 734    if (dri2_surf->throttle_callback == NULL) {
 735       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
 736       wl_callback_add_listener(dri2_surf->throttle_callback,
 737                                &throttle_listener, dri2_surf);
 738       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 739                          dri2_dpy->wl_queue);
 740    }
 741
 742    wl_display_flush(dri2_dpy->wl_dpy);
 743
 744    return EGL_TRUE;
 745 }
 746
 747 static EGLint
 748 dri2_wl_query_buffer_age(_EGLDriver *drv,
 749                          _EGLDisplay *disp, _EGLSurface *surface)
 750 {
 751    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 752
 753    if (get_back_bo(dri2_surf) < 0) {
 754       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 755       return 0;
 756    }
 757
 758    return dri2_surf->back->age;
 759 }
 760
 761 static EGLBoolean
 762 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 763 {
 764    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 765 }
 766
 767 static struct wl_buffer *
 768 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 769                                           _EGLDisplay *disp,
 770                                           _EGLImage *img)
 771 {
 772    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 773    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 774    __DRIimage *image = dri2_img->dri_image;
 775    struct wl_buffer *buffer;
 776    int width, height, format, pitch;
 777    enum wl_drm_format wl_format;
 778
 779    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 780
 781    switch (format) {
 782    case __DRI_IMAGE_FORMAT_ARGB8888:
 783       if (!(dri2_dpy->formats & HAS_ARGB8888))
 784          goto bad_format;
 785       wl_format = WL_DRM_FORMAT_ARGB8888;
 786       break;
 787    case __DRI_IMAGE_FORMAT_XRGB8888:
 788       if (!(dri2_dpy->formats & HAS_XRGB8888))
 789          goto bad_format;
 790       wl_format = WL_DRM_FORMAT_XRGB8888;
 791       break;
 792    default:
 793       goto bad_format;
 794    }
 795
 796    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 797    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 798    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 799
 800    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 801       int fd;
 802
 803       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 804
 805       buffer =
 806          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 807                                     fd,
 808                                     width, height,
 809                                     wl_format,
 810                                     0, pitch,
 811                                     0, 0,
 812                                     0, 0);
 813
 814       close(fd);
 815    } else {
 816       int name;
 817
 818       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 819
 820       buffer =
 821          wl_drm_create_buffer(dri2_dpy->wl_drm,
 822                               name,
 823                               width, height,
 824                               pitch,
 825                               wl_format);
 826    }
 827
 828    /* The buffer object will have been created with our internal event queue
 829     * because it is using the wl_drm object as a proxy factory. We want the
 830     * buffer to be used by the application so we'll reset it to the display's
 831     * default event queue */
 832    if (buffer)
 833       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 834
 835    return buffer;
 836
 837 bad_format:
 838    _eglError(EGL_BAD_MATCH, "unsupported image format");
 839    return NULL;
 840 }
 841
 842 static char
 843 is_fd_render_node(int fd)
 844 {
 845    struct stat render;
 846
 847    if (fstat(fd, &render))
 848       return 0;
 849
 850    if (!S_ISCHR(render.st_mode))
 851       return 0;
 852
 853    if (render.st_rdev & 0x80)
 854       return 1;
 855    return 0;
 856 }
 857
 858 static int
 859 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 860 {
 861    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 862    int ret = 0;
 863
 864    if (dri2_dpy->is_render_node) {
 865       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 866                             "authenticate for render-nodes");
 867       return 0;
 868    }
 869    dri2_dpy->authenticated = 0;
 870
 871    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 872    if (roundtrip(dri2_dpy) < 0)
 873       ret = -1;
 874
 875    if (!dri2_dpy->authenticated)
 876       ret = -1;
 877
 878    /* reset authenticated */
 879    dri2_dpy->authenticated = 1;
 880
 881    return ret;
 882 }
 883
 884 static void
 885 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 886 {
 887    struct dri2_egl_display *dri2_dpy = data;
 888    drm_magic_t magic;
 889
 890    dri2_dpy->device_name = strdup(device);
 891    if (!dri2_dpy->device_name)
 892       return;
 893
 894 #ifdef O_CLOEXEC
 895    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 896    if (dri2_dpy->fd == -1 && errno == EINVAL)
 897 #endif
 898    {
 899       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 900       if (dri2_dpy->fd != -1)
 901          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 902             FD_CLOEXEC);
 903    }
 904    if (dri2_dpy->fd == -1) {
 905       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 906               dri2_dpy->device_name, strerror(errno));
 907       return;
 908    }
 909
 910    if (is_fd_render_node(dri2_dpy->fd)) {
 911       dri2_dpy->authenticated = 1;
 912    } else {
 913       drmGetMagic(dri2_dpy->fd, &magic);
 914       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 915    }
 916 }
 917
 918 static void
 919 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 920 {
 921    struct dri2_egl_display *dri2_dpy = data;
 922
 923    switch (format) {
 924    case WL_DRM_FORMAT_ARGB8888:
 925       dri2_dpy->formats |= HAS_ARGB8888;
 926       break;
 927    case WL_DRM_FORMAT_XRGB8888:
 928       dri2_dpy->formats |= HAS_XRGB8888;
 929       break;
 930    case WL_DRM_FORMAT_RGB565:
 931       dri2_dpy->formats |= HAS_RGB565;
 932       break;
 933    }
 934 }
 935
 936 static void
 937 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 938 {
 939    struct dri2_egl_display *dri2_dpy = data;
 940
 941    dri2_dpy->capabilities = value;
 942 }
 943
 944 static void
 945 drm_handle_authenticated(void *data, struct wl_drm *drm)
 946 {
 947    struct dri2_egl_display *dri2_dpy = data;
 948
 949    dri2_dpy->authenticated = 1;
 950 }
 951
 952 static const struct wl_drm_listener drm_listener = {
 953         drm_handle_device,
 954         drm_handle_format,
 955         drm_handle_authenticated,
 956         drm_handle_capabilities
 957 };
 958
 959 static void
 960 registry_handle_global_drm(void *data, struct wl_registry *registry, uint32_t name,
 961                        const char *interface, uint32_t version)
 962 {
 963    struct dri2_egl_display *dri2_dpy = data;
 964
 965    if (version > 1)
 966       version = 2;
 967    if (strcmp(interface, "wl_drm") == 0) {
 968       dri2_dpy->wl_drm =
 969          wl_registry_bind(registry, name, &wl_drm_interface, version);
 970       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 971    }
 972 }
 973
 974 static void
 975 registry_handle_global_remove(void *data, struct wl_registry *registry,
 976                               uint32_t name)
 977 {
 978 }
 979
 980 static const struct wl_registry_listener registry_listener_drm = {
 981    registry_handle_global_drm,
 982    registry_handle_global_remove
 983 };
 984
 985 static EGLBoolean
 986 dri2_wl_swap_interval(_EGLDriver *drv,
 987                    _EGLDisplay *disp,
 988                    _EGLSurface *surf,
 989                    EGLint interval)
 990 {
 991    if (interval > surf->Config->MaxSwapInterval)
 992       interval = surf->Config->MaxSwapInterval;
 993    else if (interval < surf->Config->MinSwapInterval)
 994       interval = surf->Config->MinSwapInterval;
 995
 996    surf->SwapInterval = interval;
 997
 998    return EGL_TRUE;
 999 }
1000
1001 static void
1002 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1003 {
1004    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1005
1006    /* We can't use values greater than 1 on Wayland because we are using the
1007     * frame callback to synchronise the frame and the only way we be sure to
1008     * get a frame callback is to attach a new buffer. Therefore we can't just
1009     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1010
1011    if (dri2_dpy->config)
1012       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1013                                      "vblank_mode", &vblank_mode);
1014    switch (vblank_mode) {
1015    case DRI_CONF_VBLANK_NEVER:
1016       dri2_dpy->min_swap_interval = 0;
1017       dri2_dpy->max_swap_interval = 0;
1018       dri2_dpy->default_swap_interval = 0;
1019       break;
1020    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1021       dri2_dpy->min_swap_interval = 1;
1022       dri2_dpy->max_swap_interval = 1;
1023       dri2_dpy->default_swap_interval = 1;
1024       break;
1025    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1026       dri2_dpy->min_swap_interval = 0;
1027       dri2_dpy->max_swap_interval = 1;
1028       dri2_dpy->default_swap_interval = 0;
1029       break;
1030    default:
1031    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1032       dri2_dpy->min_swap_interval = 0;
1033       dri2_dpy->max_swap_interval = 1;
1034       dri2_dpy->default_swap_interval = 1;
1035       break;
1036    }
1037 }
1038
1039 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1040    .authenticate = dri2_wl_authenticate,
1041    .create_window_surface = dri2_wl_create_window_surface,
1042    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1043    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1044    .destroy_surface = dri2_wl_destroy_surface,
1045    .create_image = dri2_create_image_khr,
1046    .swap_interval = dri2_wl_swap_interval,
1047    .swap_buffers = dri2_wl_swap_buffers,
1048    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1049    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1050    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1051    .copy_buffers = dri2_fallback_copy_buffers,
1052    .query_buffer_age = dri2_wl_query_buffer_age,
1053    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1054    .get_sync_values = dri2_fallback_get_sync_values,
1055 };
1056
1057 static EGLBoolean
1058 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1059 {
1060    struct dri2_egl_display *dri2_dpy;
1061    const __DRIconfig *config;
1062    uint32_t types;
1063    int i;
1064    static const unsigned int argb_masks[4] =
1065       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1066    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1067    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1068
1069    loader_set_logger(_eglLog);
1070
1071    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1072    if (!dri2_dpy)
1073       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1074
1075    disp->DriverData = (void *) dri2_dpy;
1076    if (disp->PlatformDisplay == NULL) {
1077       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1078       if (dri2_dpy->wl_dpy == NULL)
1079          goto cleanup_dpy;
1080       dri2_dpy->own_device = 1;
1081    } else {
1082       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1083    }
1084
1085    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1086
1087    if (dri2_dpy->own_device)
1088       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1089
1090    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1091    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1092                       dri2_dpy->wl_queue);
1093    wl_registry_add_listener(dri2_dpy->wl_registry,
1094                             &registry_listener_drm, dri2_dpy);
1095    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1096       goto cleanup_registry;
1097
1098    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1099       goto cleanup_drm;
1100
1101    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1102       goto cleanup_fd;
1103
1104    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1105                                                &dri2_dpy->is_different_gpu);
1106    if (dri2_dpy->is_different_gpu) {
1107       free(dri2_dpy->device_name);
1108       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1109       if (!dri2_dpy->device_name) {
1110          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1111                                   "for requested GPU");
1112          goto cleanup_fd;
1113       }
1114    }
1115
1116    /* we have to do the check now, because loader_get_user_preferred_fd
1117     * will return a render-node when the requested gpu is different
1118     * to the server, but also if the client asks for the same gpu than
1119     * the server by requesting its pci-id */
1120    dri2_dpy->is_render_node = is_fd_render_node(dri2_dpy->fd);
1121
1122    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
1123    if (dri2_dpy->driver_name == NULL) {
1124       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1125       goto cleanup_fd;
1126    }
1127
1128    if (!dri2_load_driver(disp))
1129       goto cleanup_driver_name;
1130
1131    dri2_dpy->extensions[0] = &image_loader_extension.base;
1132    dri2_dpy->extensions[1] = &image_lookup_extension.base;
1133    dri2_dpy->extensions[2] = &use_invalidate.base;
1134
1135    /* render nodes cannot use Gem names, and thus do not support
1136     * the __DRI_DRI2_LOADER extension */
1137    if (!dri2_dpy->is_render_node) {
1138       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1139       dri2_dpy->dri2_loader_extension.base.version = 3;
1140       dri2_dpy->dri2_loader_extension.getBuffers = dri2_wl_get_buffers;
1141       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_wl_flush_front_buffer;
1142       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1143          dri2_wl_get_buffers_with_format;
1144       dri2_dpy->extensions[3] = &dri2_dpy->dri2_loader_extension.base;
1145       dri2_dpy->extensions[4] = NULL;
1146    } else
1147       dri2_dpy->extensions[3] = NULL;
1148
1149    dri2_dpy->swap_available = EGL_TRUE;
1150
1151    if (!dri2_create_screen(disp))
1152       goto cleanup_driver;
1153
1154    dri2_wl_setup_swap_interval(dri2_dpy);
1155
1156    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1157     * createImageFromFds support indicates that Prime export/import
1158     * is supported by the driver. Fall back to
1159     * gem names if we don't have Prime support. */
1160
1161    if (dri2_dpy->image->base.version < 7 ||
1162        dri2_dpy->image->createImageFromFds == NULL)
1163       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1164
1165    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1166     * The server needs to accept them */
1167    if (dri2_dpy->is_render_node &&
1168        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1169       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1170       goto cleanup_screen;
1171    }
1172
1173    if (dri2_dpy->is_different_gpu &&
1174        (dri2_dpy->image->base.version < 9 ||
1175         dri2_dpy->image->blitImage == NULL)) {
1176       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1177                             "Image extension in the driver is not "
1178                             "compatible. Version 9 or later and blitImage() "
1179                             "are required");
1180       goto cleanup_screen;
1181    }
1182
1183    types = EGL_WINDOW_BIT;
1184    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1185       config = dri2_dpy->driver_configs[i];
1186       if (dri2_dpy->formats & HAS_XRGB8888)
1187          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1188       if (dri2_dpy->formats & HAS_ARGB8888)
1189          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1190       if (dri2_dpy->formats & HAS_RGB565)
1191         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1192    }
1193
1194    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1195    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1196     * because the buffer of the EGLImage has likely a tiling mode the server
1197     * gpu won't support. These is no way to check for now. Thus do not support the
1198     * extension */
1199    if (!dri2_dpy->is_different_gpu) {
1200       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1201    } else {
1202       dri2_wl_display_vtbl.create_wayland_buffer_from_image =
1203          dri2_fallback_create_wayland_buffer_from_image;
1204    }
1205    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1206
1207    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1208
1209    /* we're supporting EGL 1.4 */
1210    disp->VersionMajor = 1;
1211    disp->VersionMinor = 4;
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
1237    return EGL_FALSE;
1238 }
1239
1240 static int
1241 dri2_wl_swrast_get_stride_for_format(int format, int w)
1242 {
1243    if (format == WL_SHM_FORMAT_RGB565)
1244       return 2 * w;
1245    else /* ARGB8888 || XRGB8888 */
1246       return 4 * w;
1247 }
1248
1249 /*
1250  * Taken from weston shared/os-compatibility.c
1251  */
1252
1253 static int
1254 set_cloexec_or_close(int fd)
1255 {
1256    long flags;
1257
1258    if (fd == -1)
1259       return -1;
1260
1261    flags = fcntl(fd, F_GETFD);
1262    if (flags == -1)
1263       goto err;
1264
1265    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1266       goto err;
1267
1268    return fd;
1269
1270 err:
1271    close(fd);
1272    return -1;
1273 }
1274
1275 /*
1276  * Taken from weston shared/os-compatibility.c
1277  */
1278
1279 static int
1280 create_tmpfile_cloexec(char *tmpname)
1281 {
1282    int fd;
1283
1284 #ifdef HAVE_MKOSTEMP
1285    fd = mkostemp(tmpname, O_CLOEXEC);
1286    if (fd >= 0)
1287       unlink(tmpname);
1288 #else
1289    fd = mkstemp(tmpname);
1290    if (fd >= 0) {
1291       fd = set_cloexec_or_close(fd);
1292       unlink(tmpname);
1293    }
1294 #endif
1295
1296    return fd;
1297 }
1298
1299 /*
1300  * Taken from weston shared/os-compatibility.c
1301  *
1302  * Create a new, unique, anonymous file of the given size, and
1303  * return the file descriptor for it. The file descriptor is set
1304  * CLOEXEC. The file is immediately suitable for mmap()'ing
1305  * the given size at offset zero.
1306  *
1307  * The file should not have a permanent backing store like a disk,
1308  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1309  *
1310  * The file name is deleted from the file system.
1311  *
1312  * The file is suitable for buffer sharing between processes by
1313  * transmitting the file descriptor over Unix sockets using the
1314  * SCM_RIGHTS methods.
1315  *
1316  * If the C library implements posix_fallocate(), it is used to
1317  * guarantee that disk space is available for the file at the
1318  * given size. If disk space is insufficent, errno is set to ENOSPC.
1319  * If posix_fallocate() is not supported, program may receive
1320  * SIGBUS on accessing mmap()'ed file contents instead.
1321  */
1322 static int
1323 os_create_anonymous_file(off_t size)
1324 {
1325    static const char template[] = "/mesa-shared-XXXXXX";
1326    const char *path;
1327    char *name;
1328    int fd;
1329    int ret;
1330
1331    path = getenv("XDG_RUNTIME_DIR");
1332    if (!path) {
1333       errno = ENOENT;
1334       return -1;
1335    }
1336
1337    name = malloc(strlen(path) + sizeof(template));
1338    if (!name)
1339       return -1;
1340
1341    strcpy(name, path);
1342    strcat(name, template);
1343
1344    fd = create_tmpfile_cloexec(name);
1345
1346    free(name);
1347
1348    if (fd < 0)
1349       return -1;
1350
1351    ret = ftruncate(fd, size);
1352    if (ret < 0) {
1353       close(fd);
1354       return -1;
1355    }
1356
1357    return fd;
1358 }
1359
1360
1361 static EGLBoolean
1362 dri2_wl_swrast_allocate_buffer(struct dri2_egl_display *dri2_dpy,
1363                                int format, int w, int h,
1364                                void **data, int *size,
1365                                struct wl_buffer **buffer)
1366 {
1367    struct wl_shm_pool *pool;
1368    int fd, stride, size_map;
1369    void *data_map;
1370
1371    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1372    size_map = h * stride;
1373
1374    /* Create a sharable buffer */
1375    fd = os_create_anonymous_file(size_map);
1376    if (fd < 0)
1377       return EGL_FALSE;
1378
1379    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1380    if (data_map == MAP_FAILED) {
1381       close(fd);
1382       return EGL_FALSE;
1383    }
1384
1385    /* Share it in a wl_buffer */
1386    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1387    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1388    wl_shm_pool_destroy(pool);
1389    close(fd);
1390
1391    *data = data_map;
1392    *size = size_map;
1393    return EGL_TRUE;
1394 }
1395
1396 static int
1397 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1398 {
1399    struct dri2_egl_display *dri2_dpy =
1400       dri2_egl_display(dri2_surf->base.Resource.Display);
1401    int i;
1402
1403    /* we need to do the following operations only once per frame */
1404    if (dri2_surf->back)
1405       return 0;
1406
1407    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1408        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1409
1410       dri2_wl_release_buffers(dri2_surf);
1411
1412       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1413       dri2_surf->base.Height = dri2_surf->wl_win->height;
1414       dri2_surf->dx = dri2_surf->wl_win->dx;
1415       dri2_surf->dy = dri2_surf->wl_win->dy;
1416       dri2_surf->current = NULL;
1417    }
1418
1419    /* find back buffer */
1420
1421    /* We always want to throttle to some event (either a frame callback or
1422     * a sync request) after the commit so that we can be sure the
1423     * compositor has had a chance to handle it and send us a release event
1424     * before we look for a free buffer */
1425    while (dri2_surf->throttle_callback != NULL)
1426       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1427                                     dri2_dpy->wl_queue) == -1)
1428          return -1;
1429
1430    /* try get free buffer already created */
1431    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1432       if (!dri2_surf->color_buffers[i].locked &&
1433           dri2_surf->color_buffers[i].wl_buffer) {
1434           dri2_surf->back = &dri2_surf->color_buffers[i];
1435           break;
1436       }
1437    }
1438
1439    /* else choose any another free location */
1440    if (!dri2_surf->back) {
1441       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1442          if (!dri2_surf->color_buffers[i].locked) {
1443              dri2_surf->back = &dri2_surf->color_buffers[i];
1444              if (!dri2_wl_swrast_allocate_buffer(dri2_dpy,
1445                                                  dri2_surf->format,
1446                                                  dri2_surf->base.Width,
1447                                                  dri2_surf->base.Height,
1448                                                  &dri2_surf->back->data,
1449                                                  &dri2_surf->back->data_size,
1450                                                  &dri2_surf->back->wl_buffer)) {
1451                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1452                  return -1;
1453              }
1454              wl_proxy_set_queue((struct wl_proxy *) dri2_surf->back->wl_buffer,
1455                                 dri2_dpy->wl_queue);
1456              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1457                                     &wl_buffer_listener, dri2_surf);
1458              break;
1459          }
1460       }
1461    }
1462
1463    if (!dri2_surf->back) {
1464       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1465       return -1;
1466    }
1467
1468    dri2_surf->back->locked = 1;
1469
1470    /* If we have an extra unlocked buffer at this point, we had to do triple
1471     * buffering for a while, but now can go back to just double buffering.
1472     * That means we can free any unlocked buffer now. */
1473    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1474       if (!dri2_surf->color_buffers[i].locked &&
1475           dri2_surf->color_buffers[i].wl_buffer) {
1476          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1477          munmap(dri2_surf->color_buffers[i].data,
1478                 dri2_surf->color_buffers[i].data_size);
1479          dri2_surf->color_buffers[i].wl_buffer = NULL;
1480          dri2_surf->color_buffers[i].data = NULL;
1481       }
1482    }
1483
1484    return 0;
1485 }
1486
1487 static void*
1488 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1489 {
1490    /* if there has been a resize: */
1491    if (!dri2_surf->current)
1492       return NULL;
1493
1494    return dri2_surf->current->data;
1495 }
1496
1497 static void*
1498 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1499 {
1500    assert(dri2_surf->back);
1501    return dri2_surf->back->data;
1502 }
1503
1504 static void
1505 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1506 {
1507    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1508
1509    if (dri2_surf->base.SwapInterval > 0) {
1510       dri2_surf->throttle_callback =
1511          wl_surface_frame(dri2_surf->wl_win->surface);
1512       wl_callback_add_listener(dri2_surf->throttle_callback,
1513                                &throttle_listener, dri2_surf);
1514       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1515                          dri2_dpy->wl_queue);
1516    }
1517
1518    dri2_surf->current = dri2_surf->back;
1519    dri2_surf->back = NULL;
1520
1521    wl_surface_attach(dri2_surf->wl_win->surface,
1522                      dri2_surf->current->wl_buffer,
1523                      dri2_surf->dx, dri2_surf->dy);
1524
1525    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1526    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1527    /* reset resize growing parameters */
1528    dri2_surf->dx = 0;
1529    dri2_surf->dy = 0;
1530
1531    wl_surface_damage(dri2_surf->wl_win->surface,
1532                      0, 0, INT32_MAX, INT32_MAX);
1533    wl_surface_commit(dri2_surf->wl_win->surface);
1534
1535    /* If we're not waiting for a frame callback then we'll at least throttle
1536     * to a sync callback so that we always give a chance for the compositor to
1537     * handle the commit and send a release event before checking for a free
1538     * buffer */
1539    if (dri2_surf->throttle_callback == NULL) {
1540       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
1541       wl_callback_add_listener(dri2_surf->throttle_callback,
1542                                &throttle_listener, dri2_surf);
1543       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
1544                          dri2_dpy->wl_queue);
1545    }
1546
1547    wl_display_flush(dri2_dpy->wl_dpy);
1548 }
1549
1550 static void
1551 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1552                                  int *x, int *y, int *w, int *h,
1553                                  void *loaderPrivate)
1554 {
1555    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1556
1557    (void) swrast_update_buffers(dri2_surf);
1558    *x = 0;
1559    *y = 0;
1560    *w = dri2_surf->base.Width;
1561    *h = dri2_surf->base.Height;
1562 }
1563
1564 static void
1565 dri2_wl_swrast_get_image(__DRIdrawable * read,
1566                          int x, int y, int w, int h,
1567                          char *data, void *loaderPrivate)
1568 {
1569    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1570    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1571    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1572    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1573    int dst_stride = copy_width;
1574    char *src, *dst;
1575
1576    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1577    if (!src) {
1578       memset(data, 0, copy_width * h);
1579       return;
1580    }
1581
1582    assert(data != src);
1583    assert(copy_width <= src_stride);
1584
1585    src += x_offset;
1586    src += y * src_stride;
1587    dst = data;
1588
1589    if (copy_width > src_stride-x_offset)
1590       copy_width = src_stride-x_offset;
1591    if (h > dri2_surf->base.Height-y)
1592       h = dri2_surf->base.Height-y;
1593
1594    for (; h>0; h--) {
1595       memcpy(dst, src, copy_width);
1596       src += src_stride;
1597       dst += dst_stride;
1598    }
1599 }
1600
1601 static void
1602 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1603                          int x, int y, int w, int h, int stride,
1604                          char *data, void *loaderPrivate)
1605 {
1606    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1607    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1608    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1609    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1610    char *src, *dst;
1611
1612    assert(copy_width <= stride);
1613
1614    (void) swrast_update_buffers(dri2_surf);
1615    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1616
1617    /* partial copy, copy old content */
1618    if (copy_width < dst_stride)
1619       dri2_wl_swrast_get_image(draw, 0, 0,
1620                                dri2_surf->base.Width, dri2_surf->base.Height,
1621                                dst, loaderPrivate);
1622
1623    dst += x_offset;
1624    dst += y * dst_stride;
1625
1626    src = data;
1627
1628    /* drivers expect we do these checks (and some rely on it) */
1629    if (copy_width > dst_stride-x_offset)
1630       copy_width = dst_stride-x_offset;
1631    if (h > dri2_surf->base.Height-y)
1632       h = dri2_surf->base.Height-y;
1633
1634    for (; h>0; h--) {
1635       memcpy(dst, src, copy_width);
1636       src += stride;
1637       dst += dst_stride;
1638    }
1639    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1640 }
1641
1642 static void
1643 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1644                          int x, int y, int w, int h,
1645                          char *data, void *loaderPrivate)
1646 {
1647    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1648    int stride;
1649
1650    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1651    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1652                              stride, data, loaderPrivate);
1653 }
1654
1655 /**
1656  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
1657  */
1658 static _EGLSurface *
1659 dri2_wl_swrast_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
1660                                      _EGLConfig *conf, void *native_window,
1661                                      const EGLint *attrib_list)
1662 {
1663    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1664    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
1665    struct wl_egl_window *window = native_window;
1666    struct dri2_egl_surface *dri2_surf;
1667
1668    (void) drv;
1669
1670    dri2_surf = calloc(1, sizeof *dri2_surf);
1671    if (!dri2_surf) {
1672       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
1673       return NULL;
1674    }
1675
1676    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
1677       goto cleanup_surf;
1678
1679    if (conf->RedSize == 5)
1680       dri2_surf->format = WL_SHM_FORMAT_RGB565;
1681    else if (conf->AlphaSize == 0)
1682       dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
1683    else
1684       dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
1685
1686    dri2_surf->wl_win = window;
1687
1688    dri2_surf->base.Width = -1;
1689    dri2_surf->base.Height = -1;
1690
1691    dri2_surf->dri_drawable =
1692       (*dri2_dpy->swrast->createNewDrawable) (dri2_dpy->dri_screen,
1693                                               dri2_conf->dri_double_config,
1694                                               dri2_surf);
1695    if (dri2_surf->dri_drawable == NULL) {
1696       _eglError(EGL_BAD_ALLOC, "swrast->createNewDrawable");
1697       goto cleanup_dri_drawable;
1698    }
1699
1700    dri2_wl_swap_interval(drv, disp, &dri2_surf->base,
1701                          dri2_dpy->default_swap_interval);
1702
1703    return &dri2_surf->base;
1704
1705  cleanup_dri_drawable:
1706    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
1707  cleanup_surf:
1708    free(dri2_surf);
1709
1710    return NULL;
1711 }
1712
1713 static EGLBoolean
1714 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1715 {
1716    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1717    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1718
1719    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1720    return EGL_TRUE;
1721 }
1722
1723 static void
1724 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1725 {
1726    struct dri2_egl_display *dri2_dpy = data;
1727
1728    switch (format) {
1729    case WL_SHM_FORMAT_ARGB8888:
1730       dri2_dpy->formats |= HAS_ARGB8888;
1731       break;
1732    case WL_SHM_FORMAT_XRGB8888:
1733       dri2_dpy->formats |= HAS_XRGB8888;
1734       break;
1735    case WL_SHM_FORMAT_RGB565:
1736       dri2_dpy->formats |= HAS_RGB565;
1737       break;
1738    }
1739 }
1740
1741 static const struct wl_shm_listener shm_listener = {
1742    shm_handle_format
1743 };
1744
1745 static void
1746 registry_handle_global_swrast(void *data, struct wl_registry *registry, uint32_t name,
1747                               const char *interface, uint32_t version)
1748 {
1749    struct dri2_egl_display *dri2_dpy = data;
1750
1751    if (strcmp(interface, "wl_shm") == 0) {
1752       dri2_dpy->wl_shm =
1753          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1754       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1755    }
1756 }
1757
1758 static const struct wl_registry_listener registry_listener_swrast = {
1759    registry_handle_global_swrast,
1760    registry_handle_global_remove
1761 };
1762
1763 static struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1764    .authenticate = NULL,
1765    .create_window_surface = dri2_wl_swrast_create_window_surface,
1766    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1767    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1768    .destroy_surface = dri2_wl_destroy_surface,
1769    .create_image = dri2_fallback_create_image_khr,
1770    .swap_interval = dri2_wl_swap_interval,
1771    .swap_buffers = dri2_wl_swrast_swap_buffers,
1772    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1773    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1774    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1775    .copy_buffers = dri2_fallback_copy_buffers,
1776    .query_buffer_age = dri2_fallback_query_buffer_age,
1777    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1778    .get_sync_values = dri2_fallback_get_sync_values,
1779 };
1780
1781 static EGLBoolean
1782 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1783 {
1784    struct dri2_egl_display *dri2_dpy;
1785    const __DRIconfig *config;
1786    uint32_t types;
1787    int i;
1788    static const unsigned int argb_masks[4] =
1789       { 0xff0000, 0xff00, 0xff, 0xff000000 };
1790    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
1791    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
1792
1793    loader_set_logger(_eglLog);
1794
1795    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1796    if (!dri2_dpy)
1797       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1798
1799    disp->DriverData = (void *) dri2_dpy;
1800    if (disp->PlatformDisplay == NULL) {
1801       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1802       if (dri2_dpy->wl_dpy == NULL)
1803          goto cleanup_dpy;
1804       dri2_dpy->own_device = 1;
1805    } else {
1806       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1807    }
1808
1809    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1810
1811    if (dri2_dpy->own_device)
1812       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1813
1814    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
1815    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
1816                       dri2_dpy->wl_queue);
1817    wl_registry_add_listener(dri2_dpy->wl_registry,
1818                             &registry_listener_swrast, dri2_dpy);
1819
1820    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1821       goto cleanup_registry;
1822
1823    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1824       goto cleanup_shm;
1825
1826    dri2_dpy->driver_name = strdup("swrast");
1827    if (!dri2_load_driver_swrast(disp))
1828       goto cleanup_shm;
1829
1830    dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
1831    dri2_dpy->swrast_loader_extension.base.version = 2;
1832    dri2_dpy->swrast_loader_extension.getDrawableInfo = dri2_wl_swrast_get_drawable_info;
1833    dri2_dpy->swrast_loader_extension.putImage = dri2_wl_swrast_put_image;
1834    dri2_dpy->swrast_loader_extension.getImage = dri2_wl_swrast_get_image;
1835    dri2_dpy->swrast_loader_extension.putImage2 = dri2_wl_swrast_put_image2;
1836
1837    dri2_dpy->extensions[0] = &dri2_dpy->swrast_loader_extension.base;
1838    dri2_dpy->extensions[1] = NULL;
1839
1840    if (!dri2_create_screen(disp))
1841       goto cleanup_driver;
1842
1843    dri2_wl_setup_swap_interval(dri2_dpy);
1844
1845    types = EGL_WINDOW_BIT;
1846    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1847       config = dri2_dpy->driver_configs[i];
1848       if (dri2_dpy->formats & HAS_XRGB8888)
1849          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1850       if (dri2_dpy->formats & HAS_ARGB8888)
1851          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1852       if (dri2_dpy->formats & HAS_RGB565)
1853         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1854    }
1855
1856    /* we're supporting EGL 1.4 */
1857    disp->VersionMajor = 1;
1858    disp->VersionMinor = 4;
1859
1860    /* Fill vtbl last to prevent accidentally calling virtual function during
1861     * initialization.
1862     */
1863    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1864
1865    return EGL_TRUE;
1866
1867  cleanup_driver:
1868    dlclose(dri2_dpy->driver);
1869  cleanup_shm:
1870    wl_shm_destroy(dri2_dpy->wl_shm);
1871  cleanup_registry:
1872    wl_registry_destroy(dri2_dpy->wl_registry);
1873    wl_event_queue_destroy(dri2_dpy->wl_queue);
1874  cleanup_dpy:
1875    free(dri2_dpy);
1876
1877    return EGL_FALSE;
1878 }
1879
1880 EGLBoolean
1881 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1882 {
1883    EGLBoolean initialized = EGL_TRUE;
1884
1885    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1886
1887    if (hw_accel) {
1888       if (!dri2_initialize_wayland_drm(drv, disp)) {
1889          initialized = dri2_initialize_wayland_swrast(drv, disp);
1890       }
1891    } else {
1892       initialized = dri2_initialize_wayland_swrast(drv, disp);
1893    }
1894
1895    return initialized;
1896
1897 }