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 <drm_fourcc.h>
  40 #include <sys/mman.h>
  41
  42 #include "egl_dri2.h"
  43 #include "egl_dri2_fallbacks.h"
  44 #include "loader.h"
  45 #include "util/u_vector.h"
  46 #include "eglglobals.h"
  47
  48 #include <wayland-client.h>
  49 #include "wayland-drm-client-protocol.h"
  50 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  51
  52 #ifndef DRM_FORMAT_MOD_INVALID
  53 #define DRM_FORMAT_MOD_INVALID ((1ULL << 56) - 1)
  54 #endif
  55
  56 #ifndef DRM_FORMAT_MOD_LINEAR
  57 #define DRM_FORMAT_MOD_LINEAR 0
  58 #endif
  59
  60 enum wl_drm_format_flags {
  61    HAS_ARGB8888 = 1,
  62    HAS_XRGB8888 = 2,
  63    HAS_RGB565 = 4,
  64 };
  65
  66 static int
  67 roundtrip(struct dri2_egl_display *dri2_dpy)
  68 {
  69    return wl_display_roundtrip_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  70 }
  71
  72 static void
  73 wl_buffer_release(void *data, struct wl_buffer *buffer)
  74 {
  75    struct dri2_egl_surface *dri2_surf = data;
  76    int i;
  77
  78    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  79       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  80          break;
  81
  82    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
  83       wl_buffer_destroy(buffer);
  84       return;
  85    }
  86
  87    dri2_surf->color_buffers[i].locked = false;
  88 }
  89
  90 static const struct wl_buffer_listener wl_buffer_listener = {
  91    .release = wl_buffer_release
  92 };
  93
  94 static void
  95 resize_callback(struct wl_egl_window *wl_win, void *data)
  96 {
  97    struct dri2_egl_surface *dri2_surf = data;
  98    struct dri2_egl_display *dri2_dpy =
  99       dri2_egl_display(dri2_surf->base.Resource.Display);
 100
 101    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 102 }
 103
 104 static void
 105 destroy_window_callback(void *data)
 106 {
 107    struct dri2_egl_surface *dri2_surf = data;
 108    dri2_surf->wl_win = NULL;
 109 }
 110
 111 static struct wl_surface *
 112 get_wl_surface_proxy(struct wl_egl_window *window)
 113 {
 114     /* Version 3 of wl_egl_window introduced a version field at the same
 115      * location where a pointer to wl_surface was stored. Thus, if
 116      * window->version is dereferencable, we've been given an older version of
 117      * wl_egl_window, and window->version points to wl_surface */
 118    if (_eglPointerIsDereferencable((void *)(window->version))) {
 119       return wl_proxy_create_wrapper((void *)(window->version));
 120    }
 121    return wl_proxy_create_wrapper(window->surface);
 122 }
 123
 124 /**
 125  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 126  */
 127 static _EGLSurface *
 128 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 129                               _EGLConfig *conf, void *native_window,
 130                               const EGLint *attrib_list)
 131 {
 132    __DRIcreateNewDrawableFunc createNewDrawable;
 133    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 134    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 135    struct wl_egl_window *window = native_window;
 136    struct dri2_egl_surface *dri2_surf;
 137    const __DRIconfig *config;
 138
 139    dri2_surf = calloc(1, sizeof *dri2_surf);
 140    if (!dri2_surf) {
 141       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 142       return NULL;
 143    }
 144
 145    if (!_eglInitSurface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list))
 146       goto cleanup_surf;
 147
 148    if (dri2_dpy->wl_dmabuf || dri2_dpy->wl_drm) {
 149       if (conf->RedSize == 5)
 150          dri2_surf->format = WL_DRM_FORMAT_RGB565;
 151       else if (conf->AlphaSize == 0)
 152          dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 153       else
 154          dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 155    } else {
 156       assert(dri2_dpy->wl_shm);
 157       if (conf->RedSize == 5)
 158          dri2_surf->format = WL_SHM_FORMAT_RGB565;
 159       else if (conf->AlphaSize == 0)
 160          dri2_surf->format = WL_SHM_FORMAT_XRGB8888;
 161       else
 162          dri2_surf->format = WL_SHM_FORMAT_ARGB8888;
 163    }
 164
 165    dri2_surf->wl_win = window;
 166    dri2_surf->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 167    if (!dri2_surf->wl_queue) {
 168       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 169       goto cleanup_surf;
 170    }
 171
 172    if (dri2_dpy->wl_drm) {
 173       dri2_surf->wl_drm_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_drm);
 174       if (!dri2_surf->wl_drm_wrapper) {
 175          _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 176          goto cleanup_queue;
 177       }
 178       wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_drm_wrapper,
 179                          dri2_surf->wl_queue);
 180    }
 181
 182    dri2_surf->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
 183    if (!dri2_surf->wl_dpy_wrapper) {
 184       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 185       goto cleanup_drm;
 186    }
 187    wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_dpy_wrapper,
 188                       dri2_surf->wl_queue);
 189
 190    dri2_surf->wl_surface_wrapper = get_wl_surface_proxy(window);
 191    if (!dri2_surf->wl_surface_wrapper) {
 192       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 193       goto cleanup_dpy_wrapper;
 194    }
 195    wl_proxy_set_queue((struct wl_proxy *)dri2_surf->wl_surface_wrapper,
 196                       dri2_surf->wl_queue);
 197
 198    dri2_surf->wl_win->private = dri2_surf;
 199    dri2_surf->wl_win->destroy_window_callback = destroy_window_callback;
 200
 201    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 202                                 dri2_surf->base.GLColorspace);
 203
 204    if (dri2_dpy->flush)
 205       dri2_surf->wl_win->resize_callback = resize_callback;
 206
 207    if (dri2_dpy->image_driver)
 208       createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
 209    else if (dri2_dpy->dri2)
 210       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
 211    else
 212       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
 213
 214    dri2_surf->dri_drawable = (*createNewDrawable)(dri2_dpy->dri_screen, config,
 215                                                   dri2_surf);
 216     if (dri2_surf->dri_drawable == NULL) {
 217       _eglError(EGL_BAD_ALLOC, "createNewDrawable");
 218        goto cleanup_surf_wrapper;
 219     }
 220
 221    dri2_surf->base.SwapInterval = dri2_dpy->default_swap_interval;
 222
 223    return &dri2_surf->base;
 224
 225  cleanup_surf_wrapper:
 226    wl_proxy_wrapper_destroy(dri2_surf->wl_surface_wrapper);
 227  cleanup_dpy_wrapper:
 228    wl_proxy_wrapper_destroy(dri2_surf->wl_dpy_wrapper);
 229  cleanup_drm:
 230    if (dri2_surf->wl_drm_wrapper)
 231       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 232  cleanup_queue:
 233    wl_event_queue_destroy(dri2_surf->wl_queue);
 234  cleanup_surf:
 235    free(dri2_surf);
 236
 237    return NULL;
 238 }
 239
 240 static _EGLSurface *
 241 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 242                               _EGLConfig *conf, void *native_window,
 243                               const EGLint *attrib_list)
 244 {
 245    /* From the EGL_EXT_platform_wayland spec, version 3:
 246     *
 247     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 248     *   that belongs to Wayland. Any such call fails and generates
 249     *   EGL_BAD_PARAMETER.
 250     */
 251    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 252              "Wayland");
 253    return NULL;
 254 }
 255
 256 /**
 257  * Called via eglDestroySurface(), drv->API.DestroySurface().
 258  */
 259 static EGLBoolean
 260 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 261 {
 262    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 263    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 264
 265    (void) drv;
 266
 267    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 268
 269    for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 270       if (dri2_surf->color_buffers[i].wl_buffer)
 271          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 272       if (dri2_surf->color_buffers[i].dri_image)
 273          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 274       if (dri2_surf->color_buffers[i].linear_copy)
 275          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 276       if (dri2_surf->color_buffers[i].data)
 277          munmap(dri2_surf->color_buffers[i].data,
 278                 dri2_surf->color_buffers[i].data_size);
 279    }
 280
 281    if (dri2_dpy->dri2)
 282       dri2_egl_surface_free_local_buffers(dri2_surf);
 283
 284    if (dri2_surf->throttle_callback)
 285       wl_callback_destroy(dri2_surf->throttle_callback);
 286
 287    if (dri2_surf->wl_win) {
 288       dri2_surf->wl_win->private = NULL;
 289       dri2_surf->wl_win->resize_callback = NULL;
 290       dri2_surf->wl_win->destroy_window_callback = NULL;
 291    }
 292
 293    wl_proxy_wrapper_destroy(dri2_surf->wl_surface_wrapper);
 294    wl_proxy_wrapper_destroy(dri2_surf->wl_dpy_wrapper);
 295    if (dri2_surf->wl_drm_wrapper)
 296       wl_proxy_wrapper_destroy(dri2_surf->wl_drm_wrapper);
 297    wl_event_queue_destroy(dri2_surf->wl_queue);
 298
 299    free(surf);
 300
 301    return EGL_TRUE;
 302 }
 303
 304 static void
 305 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 306 {
 307    struct dri2_egl_display *dri2_dpy =
 308       dri2_egl_display(dri2_surf->base.Resource.Display);
 309
 310    for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 311       if (dri2_surf->color_buffers[i].wl_buffer &&
 312           !dri2_surf->color_buffers[i].locked)
 313          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 314       if (dri2_surf->color_buffers[i].dri_image)
 315          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 316       if (dri2_surf->color_buffers[i].linear_copy)
 317          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 318       if (dri2_surf->color_buffers[i].data)
 319          munmap(dri2_surf->color_buffers[i].data,
 320                 dri2_surf->color_buffers[i].data_size);
 321
 322       dri2_surf->color_buffers[i].wl_buffer = NULL;
 323       dri2_surf->color_buffers[i].dri_image = NULL;
 324       dri2_surf->color_buffers[i].linear_copy = NULL;
 325       dri2_surf->color_buffers[i].data = NULL;
 326       dri2_surf->color_buffers[i].locked = false;
 327    }
 328
 329    if (dri2_dpy->dri2)
 330       dri2_egl_surface_free_local_buffers(dri2_surf);
 331 }
 332
 333 static int
 334 get_back_bo(struct dri2_egl_surface *dri2_surf)
 335 {
 336    struct dri2_egl_display *dri2_dpy =
 337       dri2_egl_display(dri2_surf->base.Resource.Display);
 338    int use_flags;
 339    unsigned int dri_image_format;
 340    uint64_t *modifiers;
 341    int num_modifiers;
 342
 343    /* currently supports three WL DRM formats,
 344     * WL_DRM_FORMAT_ARGB8888, WL_DRM_FORMAT_XRGB8888,
 345     * and WL_DRM_FORMAT_RGB565
 346     */
 347    switch (dri2_surf->format) {
 348    case WL_DRM_FORMAT_ARGB8888:
 349       dri_image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 350       modifiers = u_vector_tail(&dri2_dpy->wl_modifiers.argb8888);
 351       num_modifiers = u_vector_length(&dri2_dpy->wl_modifiers.argb8888);
 352       break;
 353    case WL_DRM_FORMAT_XRGB8888:
 354       dri_image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 355       modifiers = u_vector_tail(&dri2_dpy->wl_modifiers.xrgb8888);
 356       num_modifiers = u_vector_length(&dri2_dpy->wl_modifiers.xrgb8888);
 357       break;
 358    case WL_DRM_FORMAT_RGB565:
 359       dri_image_format = __DRI_IMAGE_FORMAT_RGB565;
 360       modifiers = u_vector_tail(&dri2_dpy->wl_modifiers.rgb565);
 361       num_modifiers = u_vector_length(&dri2_dpy->wl_modifiers.rgb565);
 362       break;
 363    default:
 364       /* format is not supported */
 365       return -1;
 366    }
 367
 368    /* There might be a buffer release already queued that wasn't processed */
 369    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
 370
 371    while (dri2_surf->back == NULL) {
 372       for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 373          /* Get an unlocked buffer, preferrably one with a dri_buffer
 374           * already allocated. */
 375          if (dri2_surf->color_buffers[i].locked)
 376             continue;
 377          if (dri2_surf->back == NULL)
 378             dri2_surf->back = &dri2_surf->color_buffers[i];
 379          else if (dri2_surf->back->dri_image == NULL)
 380             dri2_surf->back = &dri2_surf->color_buffers[i];
 381       }
 382
 383       if (dri2_surf->back)
 384          break;
 385
 386       /* If we don't have a buffer, then block on the server to release one for
 387        * us, and try again. wl_display_dispatch_queue will process any pending
 388        * events, however not all servers flush on issuing a buffer release
 389        * event. So, we spam the server with roundtrips as they always cause a
 390        * client flush.
 391        */
 392       if (wl_display_roundtrip_queue(dri2_dpy->wl_dpy,
 393                                      dri2_surf->wl_queue) < 0)
 394           return -1;
 395    }
 396
 397    if (dri2_surf->back == NULL)
 398       return -1;
 399
 400    use_flags = __DRI_IMAGE_USE_SHARE | __DRI_IMAGE_USE_BACKBUFFER;
 401
 402    if (dri2_dpy->is_different_gpu &&
 403        dri2_surf->back->linear_copy == NULL) {
 404       /* The LINEAR modifier should be a perfect alias of the LINEAR use
 405        * flag; try the new interface first before the old, then fall back. */
 406       if (dri2_dpy->image->base.version >= 15 &&
 407            dri2_dpy->image->createImageWithModifiers) {
 408          uint64_t linear_mod = DRM_FORMAT_MOD_LINEAR;
 409
 410          dri2_surf->back->linear_copy =
 411             dri2_dpy->image->createImageWithModifiers(dri2_dpy->dri_screen,
 412                                                       dri2_surf->base.Width,
 413                                                       dri2_surf->base.Height,
 414                                                       dri_image_format,
 415                                                       &linear_mod,
 416                                                       1,
 417                                                       NULL);
 418       } else {
 419          dri2_surf->back->linear_copy =
 420             dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 421                                          dri2_surf->base.Width,
 422                                          dri2_surf->base.Height,
 423                                          dri_image_format,
 424                                          use_flags |
 425                                          __DRI_IMAGE_USE_LINEAR,
 426                                          NULL);
 427       }
 428       if (dri2_surf->back->linear_copy == NULL)
 429           return -1;
 430    }
 431
 432    if (dri2_surf->back->dri_image == NULL) {
 433       /* If our DRIImage implementation does not support
 434        * createImageWithModifiers, then fall back to the old createImage,
 435        * and hope it allocates an image which is acceptable to the winsys.
 436         */
 437       if (num_modifiers && dri2_dpy->image->base.version >= 15 &&
 438           dri2_dpy->image->createImageWithModifiers) {
 439          dri2_surf->back->dri_image =
 440            dri2_dpy->image->createImageWithModifiers(dri2_dpy->dri_screen,
 441                                                      dri2_surf->base.Width,
 442                                                      dri2_surf->base.Height,
 443                                                      dri_image_format,
 444                                                      modifiers,
 445                                                      num_modifiers,
 446                                                      NULL);
 447       } else {
 448          dri2_surf->back->dri_image =
 449             dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 450                                          dri2_surf->base.Width,
 451                                          dri2_surf->base.Height,
 452                                          dri_image_format,
 453                                          dri2_dpy->is_different_gpu ?
 454                                               0 : use_flags,
 455                                          NULL);
 456       }
 457
 458       dri2_surf->back->age = 0;
 459    }
 460    if (dri2_surf->back->dri_image == NULL)
 461       return -1;
 462
 463    dri2_surf->back->locked = true;
 464
 465    return 0;
 466 }
 467
 468
 469 static void
 470 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 471 {
 472    struct dri2_egl_display *dri2_dpy =
 473       dri2_egl_display(dri2_surf->base.Resource.Display);
 474    __DRIimage *image;
 475    int name, pitch;
 476
 477    image = dri2_surf->back->dri_image;
 478
 479    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 480    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 481
 482    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 483    buffer->name = name;
 484    buffer->pitch = pitch;
 485    buffer->cpp = 4;
 486    buffer->flags = 0;
 487 }
 488
 489 static int
 490 update_buffers(struct dri2_egl_surface *dri2_surf)
 491 {
 492    struct dri2_egl_display *dri2_dpy =
 493       dri2_egl_display(dri2_surf->base.Resource.Display);
 494
 495    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 496        dri2_surf->base.Height != dri2_surf->wl_win->height) {
 497
 498       dri2_wl_release_buffers(dri2_surf);
 499
 500       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 501       dri2_surf->base.Height = dri2_surf->wl_win->height;
 502       dri2_surf->dx = dri2_surf->wl_win->dx;
 503       dri2_surf->dy = dri2_surf->wl_win->dy;
 504    }
 505
 506    if (get_back_bo(dri2_surf) < 0) {
 507       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 508       return -1;
 509    }
 510
 511    /* If we have an extra unlocked buffer at this point, we had to do triple
 512     * buffering for a while, but now can go back to just double buffering.
 513     * That means we can free any unlocked buffer now. */
 514    for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 515       if (!dri2_surf->color_buffers[i].locked &&
 516           dri2_surf->color_buffers[i].wl_buffer) {
 517          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 518          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 519          if (dri2_dpy->is_different_gpu)
 520             dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].linear_copy);
 521          dri2_surf->color_buffers[i].wl_buffer = NULL;
 522          dri2_surf->color_buffers[i].dri_image = NULL;
 523          dri2_surf->color_buffers[i].linear_copy = NULL;
 524       }
 525    }
 526
 527    return 0;
 528 }
 529
 530 static __DRIbuffer *
 531 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 532                                 int *width, int *height,
 533                                 unsigned int *attachments, int count,
 534                                 int *out_count, void *loaderPrivate)
 535 {
 536    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 537    int i, j;
 538
 539    if (update_buffers(dri2_surf) < 0)
 540       return NULL;
 541
 542    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 543       __DRIbuffer *local;
 544
 545       switch (attachments[i]) {
 546       case __DRI_BUFFER_BACK_LEFT:
 547          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 548          break;
 549       default:
 550          local = dri2_egl_surface_alloc_local_buffer(dri2_surf, attachments[i],
 551                                                      attachments[i + 1]);
 552
 553          if (!local) {
 554             _eglError(EGL_BAD_ALLOC, "failed to allocate local buffer");
 555             return NULL;
 556          }
 557          dri2_surf->buffers[j] = *local;
 558          break;
 559       }
 560    }
 561
 562    *out_count = j;
 563    if (j == 0)
 564       return NULL;
 565
 566    *width = dri2_surf->base.Width;
 567    *height = dri2_surf->base.Height;
 568
 569    return dri2_surf->buffers;
 570 }
 571
 572 static __DRIbuffer *
 573 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 574                     int *width, int *height,
 575                     unsigned int *attachments, int count,
 576                     int *out_count, void *loaderPrivate)
 577 {
 578    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 579    unsigned int *attachments_with_format;
 580    __DRIbuffer *buffer;
 581    unsigned int bpp;
 582
 583    switch (dri2_surf->format) {
 584    case WL_DRM_FORMAT_ARGB8888:
 585    case WL_DRM_FORMAT_XRGB8888:
 586       bpp = 32;
 587       break;
 588    case WL_DRM_FORMAT_RGB565:
 589       bpp = 16;
 590       break;
 591    default:
 592       /* format is not supported */
 593       return NULL;
 594    }
 595
 596    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 597    if (!attachments_with_format) {
 598       *out_count = 0;
 599       return NULL;
 600    }
 601
 602    for (int i = 0; i < count; ++i) {
 603       attachments_with_format[2*i] = attachments[i];
 604       attachments_with_format[2*i + 1] = bpp;
 605    }
 606
 607    buffer =
 608       dri2_wl_get_buffers_with_format(driDrawable,
 609                                       width, height,
 610                                       attachments_with_format, count,
 611                                       out_count, loaderPrivate);
 612
 613    free(attachments_with_format);
 614
 615    return buffer;
 616 }
 617
 618 static int
 619 image_get_buffers(__DRIdrawable *driDrawable,
 620                   unsigned int format,
 621                   uint32_t *stamp,
 622                   void *loaderPrivate,
 623                   uint32_t buffer_mask,
 624                   struct __DRIimageList *buffers)
 625 {
 626    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 627
 628    if (update_buffers(dri2_surf) < 0)
 629       return 0;
 630
 631    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 632    buffers->back = dri2_surf->back->dri_image;
 633
 634    return 1;
 635 }
 636
 637 static void
 638 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 639 {
 640    (void) driDrawable;
 641    (void) loaderPrivate;
 642 }
 643
 644 static const __DRIdri2LoaderExtension dri2_loader_extension = {
 645    .base = { __DRI_DRI2_LOADER, 3 },
 646
 647    .getBuffers           = dri2_wl_get_buffers,
 648    .flushFrontBuffer     = dri2_wl_flush_front_buffer,
 649    .getBuffersWithFormat = dri2_wl_get_buffers_with_format,
 650 };
 651
 652 static const __DRIimageLoaderExtension image_loader_extension = {
 653    .base = { __DRI_IMAGE_LOADER, 1 },
 654
 655    .getBuffers          = image_get_buffers,
 656    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 657 };
 658
 659 static void
 660 wayland_throttle_callback(void *data,
 661                           struct wl_callback *callback,
 662                           uint32_t time)
 663 {
 664    struct dri2_egl_surface *dri2_surf = data;
 665
 666    dri2_surf->throttle_callback = NULL;
 667    wl_callback_destroy(callback);
 668 }
 669
 670 static const struct wl_callback_listener throttle_listener = {
 671    .done = wayland_throttle_callback
 672 };
 673
 674 static struct wl_buffer *
 675 create_wl_buffer(struct dri2_egl_display *dri2_dpy,
 676                  struct dri2_egl_surface *dri2_surf,
 677                  __DRIimage *image)
 678 {
 679    struct wl_buffer *ret;
 680    int width, height, fourcc, num_planes;
 681
 682    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 683    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 684    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FOURCC, &fourcc);
 685    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NUM_PLANES,
 686                                &num_planes);
 687
 688    if (dri2_dpy->wl_dmabuf && dri2_dpy->image->base.version >= 15) {
 689       struct zwp_linux_buffer_params_v1 *params;
 690       int mod_hi, mod_lo;
 691       int i;
 692
 693       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
 694                                   &mod_hi);
 695       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
 696                                   &mod_lo);
 697
 698       /* We don't need a wrapper for wl_dmabuf objects, because we have to
 699        * create the intermediate params object; we can set the queue on this,
 700        * and the wl_buffer inherits it race-free. */
 701       params = zwp_linux_dmabuf_v1_create_params(dri2_dpy->wl_dmabuf);
 702       if (dri2_surf)
 703          wl_proxy_set_queue((struct wl_proxy *) params, dri2_surf->wl_queue);
 704
 705       for (i = 0; i < num_planes; i++) {
 706          __DRIimage *p_image;
 707          int stride, offset, fd;
 708
 709          if (i == 0)
 710             p_image = image;
 711          else
 712             p_image = dri2_dpy->image->fromPlanar(image, i, NULL);
 713          if (!p_image) {
 714             zwp_linux_buffer_params_v1_destroy(params);
 715             return NULL;
 716          }
 717
 718          dri2_dpy->image->queryImage(p_image, __DRI_IMAGE_ATTRIB_FD, &fd);
 719          dri2_dpy->image->queryImage(p_image, __DRI_IMAGE_ATTRIB_STRIDE,
 720                                      &stride);
 721          dri2_dpy->image->queryImage(p_image, __DRI_IMAGE_ATTRIB_OFFSET,
 722                                      &offset);
 723          if (image != p_image)
 724             dri2_dpy->image->destroyImage(p_image);
 725
 726          zwp_linux_buffer_params_v1_add(params, fd, i, offset, stride,
 727                                         mod_hi, mod_lo);
 728          close(fd);
 729       }
 730
 731       ret = zwp_linux_buffer_params_v1_create_immed(params, width, height,
 732                                                     fourcc, 0);
 733       zwp_linux_buffer_params_v1_destroy(params);
 734    } else if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 735       struct wl_drm *wl_drm =
 736          dri2_surf ? dri2_surf->wl_drm_wrapper : dri2_dpy->wl_drm;
 737       int fd, stride;
 738
 739       if (num_planes > 1)
 740          return NULL;
 741
 742       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 743       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 744       ret = wl_drm_create_prime_buffer(wl_drm, fd, width, height, fourcc, 0,
 745                                        stride, 0, 0, 0, 0);
 746       close(fd);
 747    } else {
 748       struct wl_drm *wl_drm =
 749          dri2_surf ? dri2_surf->wl_drm_wrapper : dri2_dpy->wl_drm;
 750       int name, stride;
 751
 752       if (num_planes > 1)
 753          return NULL;
 754
 755       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 756       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 757       ret = wl_drm_create_buffer(wl_drm, name, width, height, stride, fourcc);
 758    }
 759
 760    return ret;
 761 }
 762
 763 static EGLBoolean
 764 try_damage_buffer(struct dri2_egl_surface *dri2_surf,
 765                   const EGLint *rects,
 766                   EGLint n_rects)
 767 {
 768    if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_surface_wrapper)
 769        < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
 770       return EGL_FALSE;
 771
 772    for (int i = 0; i < n_rects; i++) {
 773       const int *rect = &rects[i * 4];
 774
 775       wl_surface_damage_buffer(dri2_surf->wl_surface_wrapper,
 776                                rect[0],
 777                                dri2_surf->base.Height - rect[1] - rect[3],
 778                                rect[2], rect[3]);
 779    }
 780    return EGL_TRUE;
 781 }
 782 /**
 783  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 784  */
 785 static EGLBoolean
 786 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 787                                  _EGLDisplay *disp,
 788                                  _EGLSurface *draw,
 789                                  const EGLint *rects,
 790                                  EGLint n_rects)
 791 {
 792    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 793    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 794
 795    while (dri2_surf->throttle_callback != NULL)
 796       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 797                                     dri2_surf->wl_queue) == -1)
 798          return -1;
 799
 800    for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 801       if (dri2_surf->color_buffers[i].age > 0)
 802          dri2_surf->color_buffers[i].age++;
 803
 804    /* Make sure we have a back buffer in case we're swapping without ever
 805     * rendering. */
 806    if (get_back_bo(dri2_surf) < 0)
 807       return _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 808
 809    if (draw->SwapInterval > 0) {
 810       dri2_surf->throttle_callback =
 811          wl_surface_frame(dri2_surf->wl_surface_wrapper);
 812       wl_callback_add_listener(dri2_surf->throttle_callback,
 813                                &throttle_listener, dri2_surf);
 814    }
 815
 816    dri2_surf->back->age = 1;
 817    dri2_surf->current = dri2_surf->back;
 818    dri2_surf->back = NULL;
 819
 820    if (!dri2_surf->current->wl_buffer) {
 821       __DRIimage *image;
 822
 823       if (dri2_dpy->is_different_gpu)
 824          image = dri2_surf->current->linear_copy;
 825       else
 826          image = dri2_surf->current->dri_image;
 827
 828       dri2_surf->current->wl_buffer =
 829          create_wl_buffer(dri2_dpy, dri2_surf, image);
 830
 831       wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 832                              &wl_buffer_listener, dri2_surf);
 833    }
 834
 835    wl_surface_attach(dri2_surf->wl_surface_wrapper,
 836                      dri2_surf->current->wl_buffer,
 837                      dri2_surf->dx, dri2_surf->dy);
 838
 839    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 840    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 841    /* reset resize growing parameters */
 842    dri2_surf->dx = 0;
 843    dri2_surf->dy = 0;
 844
 845    /* If the compositor doesn't support damage_buffer, we deliberately
 846     * ignore the damage region and post maximum damage, due to
 847     * https://bugs.freedesktop.org/78190 */
 848    if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
 849       wl_surface_damage(dri2_surf->wl_surface_wrapper,
 850                         0, 0, INT32_MAX, INT32_MAX);
 851
 852    if (dri2_dpy->is_different_gpu) {
 853       _EGLContext *ctx = _eglGetCurrentContext();
 854       struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 855       dri2_dpy->image->blitImage(dri2_ctx->dri_context,
 856                                  dri2_surf->current->linear_copy,
 857                                  dri2_surf->current->dri_image,
 858                                  0, 0, dri2_surf->base.Width,
 859                                  dri2_surf->base.Height,
 860                                  0, 0, dri2_surf->base.Width,
 861                                  dri2_surf->base.Height, 0);
 862    }
 863
 864    dri2_flush_drawable_for_swapbuffers(disp, draw);
 865    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 866
 867    wl_surface_commit(dri2_surf->wl_surface_wrapper);
 868
 869    /* If we're not waiting for a frame callback then we'll at least throttle
 870     * to a sync callback so that we always give a chance for the compositor to
 871     * handle the commit and send a release event before checking for a free
 872     * buffer */
 873    if (dri2_surf->throttle_callback == NULL) {
 874       dri2_surf->throttle_callback = wl_display_sync(dri2_surf->wl_dpy_wrapper);
 875       wl_callback_add_listener(dri2_surf->throttle_callback,
 876                                &throttle_listener, dri2_surf);
 877    }
 878
 879    wl_display_flush(dri2_dpy->wl_dpy);
 880
 881    return EGL_TRUE;
 882 }
 883
 884 static EGLint
 885 dri2_wl_query_buffer_age(_EGLDriver *drv,
 886                          _EGLDisplay *disp, _EGLSurface *surface)
 887 {
 888    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 889
 890    if (get_back_bo(dri2_surf) < 0) {
 891       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 892       return -1;
 893    }
 894
 895    return dri2_surf->back->age;
 896 }
 897
 898 static EGLBoolean
 899 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 900 {
 901    return dri2_wl_swap_buffers_with_damage(drv, disp, draw, NULL, 0);
 902 }
 903
 904 static struct wl_buffer *
 905 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 906                                           _EGLDisplay *disp,
 907                                           _EGLImage *img)
 908 {
 909    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 910    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 911    __DRIimage *image = dri2_img->dri_image;
 912    struct wl_buffer *buffer;
 913    int format;
 914
 915    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 916    switch (format) {
 917    case __DRI_IMAGE_FORMAT_ARGB8888:
 918       if (!(dri2_dpy->formats & HAS_ARGB8888))
 919          goto bad_format;
 920       break;
 921    case __DRI_IMAGE_FORMAT_XRGB8888:
 922       if (!(dri2_dpy->formats & HAS_XRGB8888))
 923          goto bad_format;
 924       break;
 925    default:
 926       goto bad_format;
 927    }
 928
 929    buffer = create_wl_buffer(dri2_dpy, NULL, image);
 930
 931    /* The buffer object will have been created with our internal event queue
 932     * because it is using wl_dmabuf/wl_drm as a proxy factory. We want the
 933     * buffer to be used by the application so we'll reset it to the display's
 934     * default event queue. This isn't actually racy, as the only event the
 935     * buffer can get is a buffer release, which doesn't happen with an explicit
 936     * attach. */
 937    if (buffer)
 938       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 939
 940    return buffer;
 941
 942 bad_format:
 943    _eglError(EGL_BAD_MATCH, "unsupported image format");
 944    return NULL;
 945 }
 946
 947 static int
 948 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 949 {
 950    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 951    int ret = 0;
 952
 953    if (dri2_dpy->is_render_node) {
 954       _eglLog(_EGL_WARNING, "wayland-egl: client asks server to "
 955                             "authenticate for render-nodes");
 956       return 0;
 957    }
 958    dri2_dpy->authenticated = false;
 959
 960    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 961    if (roundtrip(dri2_dpy) < 0)
 962       ret = -1;
 963
 964    if (!dri2_dpy->authenticated)
 965       ret = -1;
 966
 967    /* reset authenticated */
 968    dri2_dpy->authenticated = true;
 969
 970    return ret;
 971 }
 972
 973 static void
 974 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 975 {
 976    struct dri2_egl_display *dri2_dpy = data;
 977    drm_magic_t magic;
 978
 979    dri2_dpy->device_name = strdup(device);
 980    if (!dri2_dpy->device_name)
 981       return;
 982
 983    dri2_dpy->fd = loader_open_device(dri2_dpy->device_name);
 984    if (dri2_dpy->fd == -1) {
 985       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 986               dri2_dpy->device_name, strerror(errno));
 987       return;
 988    }
 989
 990    if (drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER) {
 991       dri2_dpy->authenticated = true;
 992    } else {
 993       drmGetMagic(dri2_dpy->fd, &magic);
 994       wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 995    }
 996 }
 997
 998 static void
 999 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
1000 {
1001    struct dri2_egl_display *dri2_dpy = data;
1002
1003    switch (format) {
1004    case WL_DRM_FORMAT_ARGB8888:
1005       dri2_dpy->formats |= HAS_ARGB8888;
1006       break;
1007    case WL_DRM_FORMAT_XRGB8888:
1008       dri2_dpy->formats |= HAS_XRGB8888;
1009       break;
1010    case WL_DRM_FORMAT_RGB565:
1011       dri2_dpy->formats |= HAS_RGB565;
1012       break;
1013    }
1014 }
1015
1016 static void
1017 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
1018 {
1019    struct dri2_egl_display *dri2_dpy = data;
1020
1021    dri2_dpy->capabilities = value;
1022 }
1023
1024 static void
1025 drm_handle_authenticated(void *data, struct wl_drm *drm)
1026 {
1027    struct dri2_egl_display *dri2_dpy = data;
1028
1029    dri2_dpy->authenticated = true;
1030 }
1031
1032 static const struct wl_drm_listener drm_listener = {
1033    .device = drm_handle_device,
1034    .format = drm_handle_format,
1035    .authenticated = drm_handle_authenticated,
1036    .capabilities = drm_handle_capabilities
1037 };
1038
1039 static void
1040 dmabuf_ignore_format(void *data, struct zwp_linux_dmabuf_v1 *dmabuf,
1041                      uint32_t format)
1042 {
1043    /* formats are implicitly advertised by the 'modifier' event, so ignore */
1044 }
1045
1046 static void
1047 dmabuf_handle_modifier(void *data, struct zwp_linux_dmabuf_v1 *dmabuf,
1048                        uint32_t format, uint32_t modifier_hi,
1049                        uint32_t modifier_lo)
1050 {
1051    struct dri2_egl_display *dri2_dpy = data;
1052    uint64_t *mod = NULL;
1053
1054    if (modifier_hi == (DRM_FORMAT_MOD_INVALID >> 32) &&
1055        modifier_lo == (DRM_FORMAT_MOD_INVALID & 0xffffffff))
1056       return;
1057
1058    switch (format) {
1059    case WL_DRM_FORMAT_ARGB8888:
1060       mod = u_vector_add(&dri2_dpy->wl_modifiers.argb8888);
1061       break;
1062    case WL_DRM_FORMAT_XRGB8888:
1063       mod = u_vector_add(&dri2_dpy->wl_modifiers.xrgb8888);
1064       break;
1065    case WL_DRM_FORMAT_RGB565:
1066       mod = u_vector_add(&dri2_dpy->wl_modifiers.rgb565);
1067       break;
1068    default:
1069       break;
1070    }
1071
1072    if (!mod)
1073       return;
1074
1075    *mod = (uint64_t) modifier_hi << 32;
1076    *mod |= (uint64_t) (modifier_lo & 0xffffffff);
1077 }
1078
1079 static const struct zwp_linux_dmabuf_v1_listener dmabuf_listener = {
1080    .format = dmabuf_ignore_format,
1081    .modifier = dmabuf_handle_modifier,
1082 };
1083
1084 static void
1085 registry_handle_global_drm(void *data, struct wl_registry *registry,
1086                            uint32_t name, const char *interface,
1087                            uint32_t version)
1088 {
1089    struct dri2_egl_display *dri2_dpy = data;
1090
1091    if (strcmp(interface, "wl_drm") == 0) {
1092       dri2_dpy->wl_drm =
1093          wl_registry_bind(registry, name, &wl_drm_interface, MIN2(version, 2));
1094       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
1095    } else if (strcmp(interface, "zwp_linux_dmabuf_v1") == 0 && version >= 3) {
1096       dri2_dpy->wl_dmabuf =
1097          wl_registry_bind(registry, name, &zwp_linux_dmabuf_v1_interface,
1098                           MIN2(version, 3));
1099       zwp_linux_dmabuf_v1_add_listener(dri2_dpy->wl_dmabuf, &dmabuf_listener,
1100                                        dri2_dpy);
1101    }
1102 }
1103
1104 static void
1105 registry_handle_global_remove(void *data, struct wl_registry *registry,
1106                               uint32_t name)
1107 {
1108 }
1109
1110 static const struct wl_registry_listener registry_listener_drm = {
1111    .global = registry_handle_global_drm,
1112    .global_remove = registry_handle_global_remove
1113 };
1114
1115 static void
1116 dri2_wl_setup_swap_interval(_EGLDisplay *disp)
1117 {
1118    /* We can't use values greater than 1 on Wayland because we are using the
1119     * frame callback to synchronise the frame and the only way we be sure to
1120     * get a frame callback is to attach a new buffer. Therefore we can't just
1121     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
1122
1123    dri2_setup_swap_interval(disp, 1);
1124 }
1125
1126 static const struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
1127    .authenticate = dri2_wl_authenticate,
1128    .create_window_surface = dri2_wl_create_window_surface,
1129    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1130    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1131    .destroy_surface = dri2_wl_destroy_surface,
1132    .create_image = dri2_create_image_khr,
1133    .swap_buffers = dri2_wl_swap_buffers,
1134    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
1135    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1136    .set_damage_region = dri2_fallback_set_damage_region,
1137    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1138    .copy_buffers = dri2_fallback_copy_buffers,
1139    .query_buffer_age = dri2_wl_query_buffer_age,
1140    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
1141    .get_sync_values = dri2_fallback_get_sync_values,
1142    .get_dri_drawable = dri2_surface_get_dri_drawable,
1143 };
1144
1145 static const __DRIextension *dri2_loader_extensions[] = {
1146    &dri2_loader_extension.base,
1147    &image_loader_extension.base,
1148    &image_lookup_extension.base,
1149    &use_invalidate.base,
1150    NULL,
1151 };
1152
1153 static const __DRIextension *image_loader_extensions[] = {
1154    &image_loader_extension.base,
1155    &image_lookup_extension.base,
1156    &use_invalidate.base,
1157    NULL,
1158 };
1159
1160 static EGLBoolean
1161 dri2_wl_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
1162 {
1163    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1164    static const struct {
1165       const char *format_name;
1166       int has_format;
1167       unsigned int rgba_masks[4];
1168    } visuals[] = {
1169       { "XRGB8888", HAS_XRGB8888, { 0xff0000, 0xff00, 0x00ff, 0xff000000 } },
1170       { "ARGB8888", HAS_ARGB8888, { 0xff0000, 0xff00, 0x00ff, 0 } },
1171       { "RGB565",   HAS_RGB565,   { 0x00f800, 0x07e0, 0x001f, 0 } },
1172    };
1173    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
1174    unsigned int count = 0;
1175
1176    for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++) {
1177       for (unsigned j = 0; j < ARRAY_SIZE(visuals); j++) {
1178          struct dri2_egl_config *dri2_conf;
1179
1180          if (!(dri2_dpy->formats & visuals[j].has_format))
1181             continue;
1182
1183          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
1184                count + 1, EGL_WINDOW_BIT, NULL, visuals[j].rgba_masks);
1185          if (dri2_conf) {
1186             if (dri2_conf->base.ConfigID == count + 1)
1187                count++;
1188             format_count[j]++;
1189          }
1190       }
1191    }
1192
1193    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
1194       if (!format_count[i]) {
1195          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
1196                  visuals[i].format_name);
1197       }
1198    }
1199
1200    return (count != 0);
1201 }
1202
1203 static EGLBoolean
1204 dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
1205 {
1206    struct dri2_egl_display *dri2_dpy;
1207
1208    loader_set_logger(_eglLog);
1209
1210    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1211    if (!dri2_dpy)
1212       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1213
1214    dri2_dpy->fd = -1;
1215    disp->DriverData = (void *) dri2_dpy;
1216    if (disp->PlatformDisplay == NULL) {
1217       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1218       if (dri2_dpy->wl_dpy == NULL)
1219          goto cleanup;
1220       dri2_dpy->own_device = true;
1221    } else {
1222       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1223    }
1224
1225    if (!u_vector_init(&dri2_dpy->wl_modifiers.xrgb8888, sizeof(uint64_t), 32) ||
1226        !u_vector_init(&dri2_dpy->wl_modifiers.argb8888, sizeof(uint64_t), 32) ||
1227        !u_vector_init(&dri2_dpy->wl_modifiers.rgb565, sizeof(uint64_t), 32)) {
1228       goto cleanup;
1229    }
1230
1231    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1232
1233    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1234    if (dri2_dpy->wl_dpy_wrapper == NULL)
1235       goto cleanup;
1236
1237    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1238                       dri2_dpy->wl_queue);
1239
1240    if (dri2_dpy->own_device)
1241       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1242
1243    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1244    wl_registry_add_listener(dri2_dpy->wl_registry,
1245                             &registry_listener_drm, dri2_dpy);
1246    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
1247       goto cleanup;
1248
1249    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
1250       goto cleanup;
1251
1252    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1253       goto cleanup;
1254
1255    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd,
1256                                                &dri2_dpy->is_different_gpu);
1257    if (dri2_dpy->is_different_gpu) {
1258       free(dri2_dpy->device_name);
1259       dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
1260       if (!dri2_dpy->device_name) {
1261          _eglError(EGL_BAD_ALLOC, "wayland-egl: failed to get device name "
1262                                   "for requested GPU");
1263          goto cleanup;
1264       }
1265    }
1266
1267    /* we have to do the check now, because loader_get_user_preferred_fd
1268     * will return a render-node when the requested gpu is different
1269     * to the server, but also if the client asks for the same gpu than
1270     * the server by requesting its pci-id */
1271    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1272
1273    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
1274    if (dri2_dpy->driver_name == NULL) {
1275       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1276       goto cleanup;
1277    }
1278
1279    /* render nodes cannot use Gem names, and thus do not support
1280     * the __DRI_DRI2_LOADER extension */
1281    if (!dri2_dpy->is_render_node) {
1282       dri2_dpy->loader_extensions = dri2_loader_extensions;
1283       if (!dri2_load_driver(disp)) {
1284          _eglError(EGL_BAD_ALLOC, "DRI2: failed to load driver");
1285          goto cleanup;
1286       }
1287    } else {
1288       dri2_dpy->loader_extensions = image_loader_extensions;
1289       if (!dri2_load_driver_dri3(disp)) {
1290          _eglError(EGL_BAD_ALLOC, "DRI3: failed to load driver");
1291          goto cleanup;
1292       }
1293    }
1294
1295    if (!dri2_create_screen(disp))
1296       goto cleanup;
1297
1298    if (!dri2_setup_extensions(disp))
1299       goto cleanup;
1300
1301    dri2_setup_screen(disp);
1302
1303    dri2_wl_setup_swap_interval(disp);
1304
1305    /* To use Prime, we must have _DRI_IMAGE v7 at least.
1306     * createImageFromFds support indicates that Prime export/import
1307     * is supported by the driver. Fall back to
1308     * gem names if we don't have Prime support. */
1309
1310    if (dri2_dpy->image->base.version < 7 ||
1311        dri2_dpy->image->createImageFromFds == NULL)
1312       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1313
1314    /* We cannot use Gem names with render-nodes, only prime fds (dma-buf).
1315     * The server needs to accept them */
1316    if (dri2_dpy->is_render_node &&
1317        !(dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME)) {
1318       _eglLog(_EGL_WARNING, "wayland-egl: display is not render-node capable");
1319       goto cleanup;
1320    }
1321
1322    if (dri2_dpy->is_different_gpu &&
1323        (dri2_dpy->image->base.version < 9 ||
1324         dri2_dpy->image->blitImage == NULL)) {
1325       _eglLog(_EGL_WARNING, "wayland-egl: Different GPU selected, but the "
1326                             "Image extension in the driver is not "
1327                             "compatible. Version 9 or later and blitImage() "
1328                             "are required");
1329       goto cleanup;
1330    }
1331
1332    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1333       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1334       goto cleanup;
1335    }
1336
1337    dri2_set_WL_bind_wayland_display(drv, disp);
1338    /* When cannot convert EGLImage to wl_buffer when on a different gpu,
1339     * because the buffer of the EGLImage has likely a tiling mode the server
1340     * gpu won't support. These is no way to check for now. Thus do not support the
1341     * extension */
1342    if (!dri2_dpy->is_different_gpu)
1343       disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1344
1345    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1346
1347    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1348
1349    /* Fill vtbl last to prevent accidentally calling virtual function during
1350     * initialization.
1351     */
1352    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1353
1354    return EGL_TRUE;
1355
1356  cleanup:
1357    dri2_display_destroy(disp);
1358    return EGL_FALSE;
1359 }
1360
1361 static int
1362 dri2_wl_swrast_get_stride_for_format(int format, int w)
1363 {
1364    if (format == WL_SHM_FORMAT_RGB565)
1365       return 2 * w;
1366    else /* ARGB8888 || XRGB8888 */
1367       return 4 * w;
1368 }
1369
1370 /*
1371  * Taken from weston shared/os-compatibility.c
1372  */
1373
1374 #ifndef HAVE_MKOSTEMP
1375
1376 static int
1377 set_cloexec_or_close(int fd)
1378 {
1379    long flags;
1380
1381    if (fd == -1)
1382       return -1;
1383
1384    flags = fcntl(fd, F_GETFD);
1385    if (flags == -1)
1386       goto err;
1387
1388    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
1389       goto err;
1390
1391    return fd;
1392
1393 err:
1394    close(fd);
1395    return -1;
1396 }
1397
1398 #endif
1399
1400 /*
1401  * Taken from weston shared/os-compatibility.c
1402  */
1403
1404 static int
1405 create_tmpfile_cloexec(char *tmpname)
1406 {
1407    int fd;
1408
1409 #ifdef HAVE_MKOSTEMP
1410    fd = mkostemp(tmpname, O_CLOEXEC);
1411    if (fd >= 0)
1412       unlink(tmpname);
1413 #else
1414    fd = mkstemp(tmpname);
1415    if (fd >= 0) {
1416       fd = set_cloexec_or_close(fd);
1417       unlink(tmpname);
1418    }
1419 #endif
1420
1421    return fd;
1422 }
1423
1424 /*
1425  * Taken from weston shared/os-compatibility.c
1426  *
1427  * Create a new, unique, anonymous file of the given size, and
1428  * return the file descriptor for it. The file descriptor is set
1429  * CLOEXEC. The file is immediately suitable for mmap()'ing
1430  * the given size at offset zero.
1431  *
1432  * The file should not have a permanent backing store like a disk,
1433  * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
1434  *
1435  * The file name is deleted from the file system.
1436  *
1437  * The file is suitable for buffer sharing between processes by
1438  * transmitting the file descriptor over Unix sockets using the
1439  * SCM_RIGHTS methods.
1440  *
1441  * If the C library implements posix_fallocate(), it is used to
1442  * guarantee that disk space is available for the file at the
1443  * given size. If disk space is insufficent, errno is set to ENOSPC.
1444  * If posix_fallocate() is not supported, program may receive
1445  * SIGBUS on accessing mmap()'ed file contents instead.
1446  */
1447 static int
1448 os_create_anonymous_file(off_t size)
1449 {
1450    static const char template[] = "/mesa-shared-XXXXXX";
1451    const char *path;
1452    char *name;
1453    int fd;
1454    int ret;
1455
1456    path = getenv("XDG_RUNTIME_DIR");
1457    if (!path) {
1458       errno = ENOENT;
1459       return -1;
1460    }
1461
1462    name = malloc(strlen(path) + sizeof(template));
1463    if (!name)
1464       return -1;
1465
1466    strcpy(name, path);
1467    strcat(name, template);
1468
1469    fd = create_tmpfile_cloexec(name);
1470
1471    free(name);
1472
1473    if (fd < 0)
1474       return -1;
1475
1476    ret = ftruncate(fd, size);
1477    if (ret < 0) {
1478       close(fd);
1479       return -1;
1480    }
1481
1482    return fd;
1483 }
1484
1485
1486 static EGLBoolean
1487 dri2_wl_swrast_allocate_buffer(struct dri2_egl_surface *dri2_surf,
1488                                int format, int w, int h,
1489                                void **data, int *size,
1490                                struct wl_buffer **buffer)
1491 {
1492    struct dri2_egl_display *dri2_dpy =
1493       dri2_egl_display(dri2_surf->base.Resource.Display);
1494    struct wl_shm_pool *pool;
1495    int fd, stride, size_map;
1496    void *data_map;
1497
1498    stride = dri2_wl_swrast_get_stride_for_format(format, w);
1499    size_map = h * stride;
1500
1501    /* Create a sharable buffer */
1502    fd = os_create_anonymous_file(size_map);
1503    if (fd < 0)
1504       return EGL_FALSE;
1505
1506    data_map = mmap(NULL, size_map, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1507    if (data_map == MAP_FAILED) {
1508       close(fd);
1509       return EGL_FALSE;
1510    }
1511
1512    /* Share it in a wl_buffer */
1513    pool = wl_shm_create_pool(dri2_dpy->wl_shm, fd, size_map);
1514    wl_proxy_set_queue((struct wl_proxy *)pool, dri2_surf->wl_queue);
1515    *buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, format);
1516    wl_shm_pool_destroy(pool);
1517    close(fd);
1518
1519    *data = data_map;
1520    *size = size_map;
1521    return EGL_TRUE;
1522 }
1523
1524 static int
1525 swrast_update_buffers(struct dri2_egl_surface *dri2_surf)
1526 {
1527    struct dri2_egl_display *dri2_dpy =
1528       dri2_egl_display(dri2_surf->base.Resource.Display);
1529
1530    /* we need to do the following operations only once per frame */
1531    if (dri2_surf->back)
1532       return 0;
1533
1534    if (dri2_surf->base.Width != dri2_surf->wl_win->width ||
1535        dri2_surf->base.Height != dri2_surf->wl_win->height) {
1536
1537       dri2_wl_release_buffers(dri2_surf);
1538
1539       dri2_surf->base.Width  = dri2_surf->wl_win->width;
1540       dri2_surf->base.Height = dri2_surf->wl_win->height;
1541       dri2_surf->dx = dri2_surf->wl_win->dx;
1542       dri2_surf->dy = dri2_surf->wl_win->dy;
1543       dri2_surf->current = NULL;
1544    }
1545
1546    /* find back buffer */
1547
1548    /* There might be a buffer release already queued that wasn't processed */
1549    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_surf->wl_queue);
1550
1551    /* try get free buffer already created */
1552    for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1553       if (!dri2_surf->color_buffers[i].locked &&
1554           dri2_surf->color_buffers[i].wl_buffer) {
1555           dri2_surf->back = &dri2_surf->color_buffers[i];
1556           break;
1557       }
1558    }
1559
1560    /* else choose any another free location */
1561    if (!dri2_surf->back) {
1562       for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1563          if (!dri2_surf->color_buffers[i].locked) {
1564              dri2_surf->back = &dri2_surf->color_buffers[i];
1565              if (!dri2_wl_swrast_allocate_buffer(dri2_surf,
1566                                                  dri2_surf->format,
1567                                                  dri2_surf->base.Width,
1568                                                  dri2_surf->base.Height,
1569                                                  &dri2_surf->back->data,
1570                                                  &dri2_surf->back->data_size,
1571                                                  &dri2_surf->back->wl_buffer)) {
1572                 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
1573                  return -1;
1574              }
1575              wl_buffer_add_listener(dri2_surf->back->wl_buffer,
1576                                     &wl_buffer_listener, dri2_surf);
1577              break;
1578          }
1579       }
1580    }
1581
1582    if (!dri2_surf->back) {
1583       _eglError(EGL_BAD_ALLOC, "failed to find free buffer");
1584       return -1;
1585    }
1586
1587    dri2_surf->back->locked = true;
1588
1589    /* If we have an extra unlocked buffer at this point, we had to do triple
1590     * buffering for a while, but now can go back to just double buffering.
1591     * That means we can free any unlocked buffer now. */
1592    for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
1593       if (!dri2_surf->color_buffers[i].locked &&
1594           dri2_surf->color_buffers[i].wl_buffer) {
1595          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
1596          munmap(dri2_surf->color_buffers[i].data,
1597                 dri2_surf->color_buffers[i].data_size);
1598          dri2_surf->color_buffers[i].wl_buffer = NULL;
1599          dri2_surf->color_buffers[i].data = NULL;
1600       }
1601    }
1602
1603    return 0;
1604 }
1605
1606 static void*
1607 dri2_wl_swrast_get_frontbuffer_data(struct dri2_egl_surface *dri2_surf)
1608 {
1609    /* if there has been a resize: */
1610    if (!dri2_surf->current)
1611       return NULL;
1612
1613    return dri2_surf->current->data;
1614 }
1615
1616 static void*
1617 dri2_wl_swrast_get_backbuffer_data(struct dri2_egl_surface *dri2_surf)
1618 {
1619    assert(dri2_surf->back);
1620    return dri2_surf->back->data;
1621 }
1622
1623 static void
1624 dri2_wl_swrast_commit_backbuffer(struct dri2_egl_surface *dri2_surf)
1625 {
1626    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
1627
1628    while (dri2_surf->throttle_callback != NULL)
1629       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
1630                                     dri2_surf->wl_queue) == -1)
1631          return;
1632
1633    if (dri2_surf->base.SwapInterval > 0) {
1634       dri2_surf->throttle_callback =
1635          wl_surface_frame(dri2_surf->wl_surface_wrapper);
1636       wl_callback_add_listener(dri2_surf->throttle_callback,
1637                                &throttle_listener, dri2_surf);
1638    }
1639
1640    dri2_surf->current = dri2_surf->back;
1641    dri2_surf->back = NULL;
1642
1643    wl_surface_attach(dri2_surf->wl_surface_wrapper,
1644                      dri2_surf->current->wl_buffer,
1645                      dri2_surf->dx, dri2_surf->dy);
1646
1647    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
1648    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
1649    /* reset resize growing parameters */
1650    dri2_surf->dx = 0;
1651    dri2_surf->dy = 0;
1652
1653    wl_surface_damage(dri2_surf->wl_surface_wrapper,
1654                      0, 0, INT32_MAX, INT32_MAX);
1655    wl_surface_commit(dri2_surf->wl_surface_wrapper);
1656
1657    /* If we're not waiting for a frame callback then we'll at least throttle
1658     * to a sync callback so that we always give a chance for the compositor to
1659     * handle the commit and send a release event before checking for a free
1660     * buffer */
1661    if (dri2_surf->throttle_callback == NULL) {
1662       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy_wrapper);
1663       wl_callback_add_listener(dri2_surf->throttle_callback,
1664                                &throttle_listener, dri2_surf);
1665    }
1666
1667    wl_display_flush(dri2_dpy->wl_dpy);
1668 }
1669
1670 static void
1671 dri2_wl_swrast_get_drawable_info(__DRIdrawable * draw,
1672                                  int *x, int *y, int *w, int *h,
1673                                  void *loaderPrivate)
1674 {
1675    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1676
1677    (void) swrast_update_buffers(dri2_surf);
1678    *x = 0;
1679    *y = 0;
1680    *w = dri2_surf->base.Width;
1681    *h = dri2_surf->base.Height;
1682 }
1683
1684 static void
1685 dri2_wl_swrast_get_image(__DRIdrawable * read,
1686                          int x, int y, int w, int h,
1687                          char *data, void *loaderPrivate)
1688 {
1689    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1690    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1691    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1692    int src_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1693    int dst_stride = copy_width;
1694    char *src, *dst;
1695
1696    src = dri2_wl_swrast_get_frontbuffer_data(dri2_surf);
1697    if (!src) {
1698       memset(data, 0, copy_width * h);
1699       return;
1700    }
1701
1702    assert(data != src);
1703    assert(copy_width <= src_stride);
1704
1705    src += x_offset;
1706    src += y * src_stride;
1707    dst = data;
1708
1709    if (copy_width > src_stride-x_offset)
1710       copy_width = src_stride-x_offset;
1711    if (h > dri2_surf->base.Height-y)
1712       h = dri2_surf->base.Height-y;
1713
1714    for (; h>0; h--) {
1715       memcpy(dst, src, copy_width);
1716       src += src_stride;
1717       dst += dst_stride;
1718    }
1719 }
1720
1721 static void
1722 dri2_wl_swrast_put_image2(__DRIdrawable * draw, int op,
1723                          int x, int y, int w, int h, int stride,
1724                          char *data, void *loaderPrivate)
1725 {
1726    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1727    int copy_width = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1728    int dst_stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, dri2_surf->base.Width);
1729    int x_offset = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, x);
1730    char *src, *dst;
1731
1732    assert(copy_width <= stride);
1733
1734    (void) swrast_update_buffers(dri2_surf);
1735    dst = dri2_wl_swrast_get_backbuffer_data(dri2_surf);
1736
1737    /* partial copy, copy old content */
1738    if (copy_width < dst_stride)
1739       dri2_wl_swrast_get_image(draw, 0, 0,
1740                                dri2_surf->base.Width, dri2_surf->base.Height,
1741                                dst, loaderPrivate);
1742
1743    dst += x_offset;
1744    dst += y * dst_stride;
1745
1746    src = data;
1747
1748    /* drivers expect we do these checks (and some rely on it) */
1749    if (copy_width > dst_stride-x_offset)
1750       copy_width = dst_stride-x_offset;
1751    if (h > dri2_surf->base.Height-y)
1752       h = dri2_surf->base.Height-y;
1753
1754    for (; h>0; h--) {
1755       memcpy(dst, src, copy_width);
1756       src += stride;
1757       dst += dst_stride;
1758    }
1759    dri2_wl_swrast_commit_backbuffer(dri2_surf);
1760 }
1761
1762 static void
1763 dri2_wl_swrast_put_image(__DRIdrawable * draw, int op,
1764                          int x, int y, int w, int h,
1765                          char *data, void *loaderPrivate)
1766 {
1767    struct dri2_egl_surface *dri2_surf = loaderPrivate;
1768    int stride;
1769
1770    stride = dri2_wl_swrast_get_stride_for_format(dri2_surf->format, w);
1771    dri2_wl_swrast_put_image2(draw, op, x, y, w, h,
1772                              stride, data, loaderPrivate);
1773 }
1774
1775 static EGLBoolean
1776 dri2_wl_swrast_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1777 {
1778    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1779    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1780
1781    dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
1782    return EGL_TRUE;
1783 }
1784
1785 static void
1786 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
1787 {
1788    struct dri2_egl_display *dri2_dpy = data;
1789
1790    switch (format) {
1791    case WL_SHM_FORMAT_ARGB8888:
1792       dri2_dpy->formats |= HAS_ARGB8888;
1793       break;
1794    case WL_SHM_FORMAT_XRGB8888:
1795       dri2_dpy->formats |= HAS_XRGB8888;
1796       break;
1797    case WL_SHM_FORMAT_RGB565:
1798       dri2_dpy->formats |= HAS_RGB565;
1799       break;
1800    }
1801 }
1802
1803 static const struct wl_shm_listener shm_listener = {
1804    .format = shm_handle_format
1805 };
1806
1807 static void
1808 registry_handle_global_swrast(void *data, struct wl_registry *registry,
1809                               uint32_t name, const char *interface,
1810                               uint32_t version)
1811 {
1812    struct dri2_egl_display *dri2_dpy = data;
1813
1814    if (strcmp(interface, "wl_shm") == 0) {
1815       dri2_dpy->wl_shm =
1816          wl_registry_bind(registry, name, &wl_shm_interface, 1);
1817       wl_shm_add_listener(dri2_dpy->wl_shm, &shm_listener, dri2_dpy);
1818    }
1819 }
1820
1821 static const struct wl_registry_listener registry_listener_swrast = {
1822    .global = registry_handle_global_swrast,
1823    .global_remove = registry_handle_global_remove
1824 };
1825
1826 static const struct dri2_egl_display_vtbl dri2_wl_swrast_display_vtbl = {
1827    .authenticate = NULL,
1828    .create_window_surface = dri2_wl_create_window_surface,
1829    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
1830    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
1831    .destroy_surface = dri2_wl_destroy_surface,
1832    .create_image = dri2_create_image_khr,
1833    .swap_buffers = dri2_wl_swrast_swap_buffers,
1834    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1835    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1836    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1837    .copy_buffers = dri2_fallback_copy_buffers,
1838    .query_buffer_age = dri2_fallback_query_buffer_age,
1839    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1840    .get_sync_values = dri2_fallback_get_sync_values,
1841    .get_dri_drawable = dri2_surface_get_dri_drawable,
1842 };
1843
1844 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1845    .base = { __DRI_SWRAST_LOADER, 2 },
1846
1847    .getDrawableInfo = dri2_wl_swrast_get_drawable_info,
1848    .putImage        = dri2_wl_swrast_put_image,
1849    .getImage        = dri2_wl_swrast_get_image,
1850    .putImage2       = dri2_wl_swrast_put_image2,
1851 };
1852
1853 static const __DRIextension *swrast_loader_extensions[] = {
1854    &swrast_loader_extension.base,
1855    &image_lookup_extension.base,
1856    NULL,
1857 };
1858
1859 static EGLBoolean
1860 dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1861 {
1862    struct dri2_egl_display *dri2_dpy;
1863
1864    loader_set_logger(_eglLog);
1865
1866    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1867    if (!dri2_dpy)
1868       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1869
1870    dri2_dpy->fd = -1;
1871    disp->DriverData = (void *) dri2_dpy;
1872    if (disp->PlatformDisplay == NULL) {
1873       dri2_dpy->wl_dpy = wl_display_connect(NULL);
1874       if (dri2_dpy->wl_dpy == NULL)
1875          goto cleanup;
1876       dri2_dpy->own_device = true;
1877    } else {
1878       dri2_dpy->wl_dpy = disp->PlatformDisplay;
1879    }
1880
1881    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
1882
1883    dri2_dpy->wl_dpy_wrapper = wl_proxy_create_wrapper(dri2_dpy->wl_dpy);
1884    if (dri2_dpy->wl_dpy_wrapper == NULL)
1885       goto cleanup;
1886
1887    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_dpy_wrapper,
1888                       dri2_dpy->wl_queue);
1889
1890    if (dri2_dpy->own_device)
1891       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
1892
1893    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy_wrapper);
1894    wl_registry_add_listener(dri2_dpy->wl_registry,
1895                             &registry_listener_swrast, dri2_dpy);
1896
1897    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_shm == NULL)
1898       goto cleanup;
1899
1900    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->formats == 0)
1901       goto cleanup;
1902
1903    dri2_dpy->driver_name = strdup("swrast");
1904    if (!dri2_load_driver_swrast(disp))
1905       goto cleanup;
1906
1907    dri2_dpy->loader_extensions = swrast_loader_extensions;
1908
1909    if (!dri2_create_screen(disp))
1910       goto cleanup;
1911
1912    if (!dri2_setup_extensions(disp))
1913       goto cleanup;
1914
1915    dri2_setup_screen(disp);
1916
1917    dri2_wl_setup_swap_interval(disp);
1918
1919    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
1920       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to add configs");
1921       goto cleanup;
1922    }
1923
1924    /* Fill vtbl last to prevent accidentally calling virtual function during
1925     * initialization.
1926     */
1927    dri2_dpy->vtbl = &dri2_wl_swrast_display_vtbl;
1928
1929    return EGL_TRUE;
1930
1931  cleanup:
1932    dri2_display_destroy(disp);
1933    return EGL_FALSE;
1934 }
1935
1936 EGLBoolean
1937 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
1938 {
1939    EGLBoolean initialized = EGL_TRUE;
1940
1941    int hw_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1942
1943    if (hw_accel) {
1944       if (!dri2_initialize_wayland_drm(drv, disp)) {
1945          initialized = dri2_initialize_wayland_swrast(drv, disp);
1946       }
1947    } else {
1948       initialized = dri2_initialize_wayland_swrast(drv, disp);
1949    }
1950
1951    return initialized;
1952
1953 }