src/egl/drivers/dri2/platform_wayland.c

   1 /*
   2  * Copyright © 2011-2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  27  */
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <limits.h>
  32 #include <dlfcn.h>
  33 #include <errno.h>
  34 #include <unistd.h>
  35 #include <fcntl.h>
  36 #include <xf86drm.h>
  37
  38 #include "egl_dri2.h"
  39 #include "egl_dri2_fallbacks.h"
  40 #include "loader.h"
  41
  42 #include <wayland-client.h>
  43 #include "wayland-drm-client-protocol.h"
  44
  45 enum wl_drm_format_flags {
  46    HAS_ARGB8888 = 1,
  47    HAS_XRGB8888 = 2,
  48    HAS_RGB565 = 4,
  49 };
  50
  51 static EGLBoolean
  52 dri2_wl_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  53                       EGLint interval);
  54
  55 static void
  56 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  57 {
  58    int *done = data;
  59
  60    *done = 1;
  61    wl_callback_destroy(callback);
  62 }
  63
  64 static const struct wl_callback_listener sync_listener = {
  65    sync_callback
  66 };
  67
  68 static int
  69 roundtrip(struct dri2_egl_display *dri2_dpy)
  70 {
  71    struct wl_callback *callback;
  72    int done = 0, ret = 0;
  73
  74    callback = wl_display_sync(dri2_dpy->wl_dpy);
  75    wl_callback_add_listener(callback, &sync_listener, &done);
  76    wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
  77    while (ret != -1 && !done)
  78       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  79
  80    if (!done)
  81       wl_callback_destroy(callback);
  82
  83    return ret;
  84 }
  85
  86 static void
  87 wl_buffer_release(void *data, struct wl_buffer *buffer)
  88 {
  89    struct dri2_egl_surface *dri2_surf = data;
  90    int i;
  91
  92    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  93       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  94          break;
  95
  96    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
  97       wl_buffer_destroy(buffer);
  98       return;
  99    }
 100
 101    dri2_surf->color_buffers[i].locked = 0;
 102 }
 103
 104 static struct wl_buffer_listener wl_buffer_listener = {
 105    wl_buffer_release
 106 };
 107
 108 static void
 109 resize_callback(struct wl_egl_window *wl_win, void *data)
 110 {
 111    struct dri2_egl_surface *dri2_surf = data;
 112    struct dri2_egl_display *dri2_dpy =
 113       dri2_egl_display(dri2_surf->base.Resource.Display);
 114
 115    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 116 }
 117
 118 /**
 119  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 120  */
 121 static _EGLSurface *
 122 dri2_wl_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 123                        _EGLConfig *conf, void *native_window,
 124                        const EGLint *attrib_list)
 125 {
 126    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 127    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 128    struct wl_egl_window *window = native_window;
 129    struct dri2_egl_surface *dri2_surf;
 130
 131    (void) drv;
 132
 133    dri2_surf = calloc(1, sizeof *dri2_surf);
 134    if (!dri2_surf) {
 135       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 136       return NULL;
 137    }
 138
 139    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 140       goto cleanup_surf;
 141
 142    if (conf->RedSize == 5)
 143       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 144    else if (conf->AlphaSize == 0)
 145       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 146    else
 147       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 148
 149    switch (type) {
 150    case EGL_WINDOW_BIT:
 151       dri2_surf->wl_win = window;
 152
 153       dri2_surf->wl_win->private = dri2_surf;
 154       dri2_surf->wl_win->resize_callback = resize_callback;
 155
 156       dri2_surf->base.Width =  -1;
 157       dri2_surf->base.Height = -1;
 158       break;
 159    default:
 160       goto cleanup_surf;
 161    }
 162
 163    dri2_surf->dri_drawable =
 164       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 165                                             type == EGL_WINDOW_BIT ?
 166                                             dri2_conf->dri_double_config :
 167                                             dri2_conf->dri_single_config,
 168                                             dri2_surf);
 169    if (dri2_surf->dri_drawable == NULL) {
 170       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 171       goto cleanup_dri_drawable;
 172    }
 173
 174    return &dri2_surf->base;
 175
 176  cleanup_dri_drawable:
 177    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 178  cleanup_surf:
 179    free(dri2_surf);
 180
 181    return NULL;
 182 }
 183
 184 /**
 185  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 186  */
 187 static _EGLSurface *
 188 dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 189                               _EGLConfig *conf, void *native_window,
 190                               const EGLint *attrib_list)
 191 {
 192    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 193    _EGLSurface *surf;
 194
 195    surf = dri2_wl_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 196                                  native_window, attrib_list);
 197
 198    if (surf != NULL)
 199       dri2_wl_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 200
 201    return surf;
 202 }
 203
 204 static _EGLSurface *
 205 dri2_wl_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 206                               _EGLConfig *conf, void *native_window,
 207                               const EGLint *attrib_list)
 208 {
 209    /* From the EGL_EXT_platform_wayland spec, version 3:
 210     *
 211     *   It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 212     *   that belongs to Wayland. Any such call fails and generates
 213     *   EGL_BAD_PARAMETER.
 214     */
 215    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on "
 216              "Wayland");
 217    return NULL;
 218 }
 219
 220 /**
 221  * Called via eglDestroySurface(), drv->API.DestroySurface().
 222  */
 223 static EGLBoolean
 224 dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 225 {
 226    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 227    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 228    int i;
 229
 230    (void) drv;
 231
 232    if (!_eglPutSurface(surf))
 233       return EGL_TRUE;
 234
 235    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 236
 237    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 238       if (dri2_surf->color_buffers[i].wl_buffer)
 239          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 240       if (dri2_surf->color_buffers[i].dri_image)
 241          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 242    }
 243
 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    if (dri2_surf->throttle_callback)
 251       wl_callback_destroy(dri2_surf->throttle_callback);
 252
 253    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 254       dri2_surf->wl_win->private = NULL;
 255       dri2_surf->wl_win->resize_callback = NULL;
 256    }
 257
 258    free(surf);
 259
 260    return EGL_TRUE;
 261 }
 262
 263 static void
 264 dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
 265 {
 266    struct dri2_egl_display *dri2_dpy =
 267       dri2_egl_display(dri2_surf->base.Resource.Display);
 268    int i;
 269
 270    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 271       if (dri2_surf->color_buffers[i].wl_buffer &&
 272           !dri2_surf->color_buffers[i].locked)
 273          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 274       if (dri2_surf->color_buffers[i].dri_image)
 275          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 276
 277       dri2_surf->color_buffers[i].wl_buffer = NULL;
 278       dri2_surf->color_buffers[i].dri_image = NULL;
 279       dri2_surf->color_buffers[i].locked = 0;
 280    }
 281
 282    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 283       if (dri2_surf->dri_buffers[i] &&
 284           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 285          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 286                                        dri2_surf->dri_buffers[i]);
 287 }
 288
 289 static int
 290 get_back_bo(struct dri2_egl_surface *dri2_surf)
 291 {
 292    struct dri2_egl_display *dri2_dpy =
 293       dri2_egl_display(dri2_surf->base.Resource.Display);
 294    int i;
 295
 296    /* We always want to throttle to some event (either a frame callback or
 297     * a sync request) after the commit so that we can be sure the
 298     * compositor has had a chance to handle it and send us a release event
 299     * before we look for a free buffer */
 300    while (dri2_surf->throttle_callback != NULL)
 301       if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
 302                                     dri2_dpy->wl_queue) == -1)
 303          return -1;
 304
 305    if (dri2_surf->back == NULL) {
 306       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 307          /* Get an unlocked buffer, preferrably one with a dri_buffer
 308           * already allocated. */
 309          if (dri2_surf->color_buffers[i].locked)
 310             continue;
 311          if (dri2_surf->back == NULL)
 312             dri2_surf->back = &dri2_surf->color_buffers[i];
 313          else if (dri2_surf->back->dri_image == NULL)
 314             dri2_surf->back = &dri2_surf->color_buffers[i];
 315       }
 316    }
 317
 318    if (dri2_surf->back == NULL)
 319       return -1;
 320    if (dri2_surf->back->dri_image == NULL) {
 321       dri2_surf->back->dri_image =
 322          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 323                                       dri2_surf->base.Width,
 324                                       dri2_surf->base.Height,
 325                                       __DRI_IMAGE_FORMAT_ARGB8888,
 326                                       __DRI_IMAGE_USE_SHARE,
 327                                       NULL);
 328       dri2_surf->back->age = 0;
 329    }
 330    if (dri2_surf->back->dri_image == NULL)
 331       return -1;
 332
 333    dri2_surf->back->locked = 1;
 334
 335    return 0;
 336 }
 337
 338
 339 static void
 340 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 341 {
 342    struct dri2_egl_display *dri2_dpy =
 343       dri2_egl_display(dri2_surf->base.Resource.Display);
 344    __DRIimage *image;
 345    int name, pitch;
 346
 347    image = dri2_surf->back->dri_image;
 348
 349    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 350    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 351
 352    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 353    buffer->name = name;
 354    buffer->pitch = pitch;
 355    buffer->cpp = 4;
 356    buffer->flags = 0;
 357 }
 358
 359 static int
 360 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 361            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 362 {
 363    struct dri2_egl_display *dri2_dpy =
 364       dri2_egl_display(dri2_surf->base.Resource.Display);
 365    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 366
 367    if (b == NULL) {
 368       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 369                                          attachment, format,
 370                                          dri2_surf->base.Width,
 371                                          dri2_surf->base.Height);
 372       dri2_surf->dri_buffers[attachment] = b;
 373    }
 374    if (b == NULL)
 375       return -1;
 376
 377    memcpy(buffer, b, sizeof *buffer);
 378
 379    return 0;
 380 }
 381
 382 static int
 383 update_buffers(struct dri2_egl_surface *dri2_surf)
 384 {
 385    struct dri2_egl_display *dri2_dpy =
 386       dri2_egl_display(dri2_surf->base.Resource.Display);
 387    int i;
 388
 389    if (dri2_surf->base.Type == EGL_WINDOW_BIT &&
 390        (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 391         dri2_surf->base.Height != dri2_surf->wl_win->height)) {
 392
 393       dri2_wl_release_buffers(dri2_surf);
 394
 395       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 396       dri2_surf->base.Height = dri2_surf->wl_win->height;
 397       dri2_surf->dx = dri2_surf->wl_win->dx;
 398       dri2_surf->dy = dri2_surf->wl_win->dy;
 399    }
 400
 401    if (get_back_bo(dri2_surf) < 0) {
 402       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 403       return -1;
 404    }
 405
 406    /* If we have an extra unlocked buffer at this point, we had to do triple
 407     * buffering for a while, but now can go back to just double buffering.
 408     * That means we can free any unlocked buffer now. */
 409    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 410       if (!dri2_surf->color_buffers[i].locked &&
 411           dri2_surf->color_buffers[i].wl_buffer) {
 412          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 413          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 414          dri2_surf->color_buffers[i].wl_buffer = NULL;
 415          dri2_surf->color_buffers[i].dri_image = NULL;
 416       }
 417    }
 418
 419    return 0;
 420 }
 421
 422 static __DRIbuffer *
 423 dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
 424                                 int *width, int *height,
 425                                 unsigned int *attachments, int count,
 426                                 int *out_count, void *loaderPrivate)
 427 {
 428    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 429    int i, j;
 430
 431    if (update_buffers(dri2_surf) < 0)
 432       return NULL;
 433
 434    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 435       switch (attachments[i]) {
 436       case __DRI_BUFFER_BACK_LEFT:
 437          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 438          break;
 439       default:
 440          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 441                         &dri2_surf->buffers[j]) < 0) {
 442             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 443             return NULL;
 444          }
 445          break;
 446       }
 447    }
 448
 449    *out_count = j;
 450    if (j == 0)
 451            return NULL;
 452
 453    *width = dri2_surf->base.Width;
 454    *height = dri2_surf->base.Height;
 455
 456    return dri2_surf->buffers;
 457 }
 458
 459 static __DRIbuffer *
 460 dri2_wl_get_buffers(__DRIdrawable * driDrawable,
 461                     int *width, int *height,
 462                     unsigned int *attachments, int count,
 463                     int *out_count, void *loaderPrivate)
 464 {
 465    unsigned int *attachments_with_format;
 466    __DRIbuffer *buffer;
 467    const unsigned int format = 32;
 468    int i;
 469
 470    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 471    if (!attachments_with_format) {
 472       *out_count = 0;
 473       return NULL;
 474    }
 475
 476    for (i = 0; i < count; ++i) {
 477       attachments_with_format[2*i] = attachments[i];
 478       attachments_with_format[2*i + 1] = format;
 479    }
 480
 481    buffer =
 482       dri2_wl_get_buffers_with_format(driDrawable,
 483                                       width, height,
 484                                       attachments_with_format, count,
 485                                       out_count, loaderPrivate);
 486
 487    free(attachments_with_format);
 488
 489    return buffer;
 490 }
 491
 492 static int
 493 image_get_buffers(__DRIdrawable *driDrawable,
 494                   unsigned int format,
 495                   uint32_t *stamp,
 496                   void *loaderPrivate,
 497                   uint32_t buffer_mask,
 498                   struct __DRIimageList *buffers)
 499 {
 500    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 501
 502    if (update_buffers(dri2_surf) < 0)
 503       return 0;
 504
 505    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 506    buffers->back = dri2_surf->back->dri_image;
 507
 508    return 1;
 509 }
 510
 511 static void
 512 dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 513 {
 514    (void) driDrawable;
 515    (void) loaderPrivate;
 516 }
 517
 518 static const __DRIimageLoaderExtension image_loader_extension = {
 519    .base = { __DRI_IMAGE_LOADER, 1 },
 520
 521    .getBuffers          = image_get_buffers,
 522    .flushFrontBuffer    = dri2_wl_flush_front_buffer,
 523 };
 524
 525 static void
 526 wayland_throttle_callback(void *data,
 527                           struct wl_callback *callback,
 528                           uint32_t time)
 529 {
 530    struct dri2_egl_surface *dri2_surf = data;
 531
 532    dri2_surf->throttle_callback = NULL;
 533    wl_callback_destroy(callback);
 534 }
 535
 536 static const struct wl_callback_listener throttle_listener = {
 537    wayland_throttle_callback
 538 };
 539
 540 static void
 541 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 542 {
 543    struct dri2_egl_display *dri2_dpy =
 544       dri2_egl_display(dri2_surf->base.Resource.Display);
 545    int fd, stride, name;
 546
 547    if (dri2_surf->current->wl_buffer != NULL)
 548       return;
 549
 550    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 551       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 552                                   __DRI_IMAGE_ATTRIB_FD, &fd);
 553       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 554                                   __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 555
 556       dri2_surf->current->wl_buffer =
 557          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 558                                     fd,
 559                                     dri2_surf->base.Width,
 560                                     dri2_surf->base.Height,
 561                                     dri2_surf->format,
 562                                     0, stride,
 563                                     0, 0,
 564                                     0, 0);
 565       close(fd);
 566    } else {
 567       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 568                                   __DRI_IMAGE_ATTRIB_NAME, &name);
 569       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 570                                   __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 571
 572       dri2_surf->current->wl_buffer =
 573          wl_drm_create_buffer(dri2_dpy->wl_drm,
 574                               name,
 575                               dri2_surf->base.Width,
 576                               dri2_surf->base.Height,
 577                               stride,
 578                               dri2_surf->format);
 579    }
 580
 581    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 582                       dri2_dpy->wl_queue);
 583    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 584                           &wl_buffer_listener, dri2_surf);
 585 }
 586
 587 /**
 588  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 589  */
 590 static EGLBoolean
 591 dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
 592                                  _EGLDisplay *disp,
 593                                  _EGLSurface *draw,
 594                                  const EGLint *rects,
 595                                  EGLint n_rects)
 596 {
 597    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 598    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 599    int i;
 600
 601    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 602       if (dri2_surf->color_buffers[i].age > 0)
 603          dri2_surf->color_buffers[i].age++;
 604
 605    /* Make sure we have a back buffer in case we're swapping without ever
 606     * rendering. */
 607    if (get_back_bo(dri2_surf) < 0) {
 608       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 609       return EGL_FALSE;
 610    }
 611
 612    if (draw->SwapInterval > 0) {
 613       dri2_surf->throttle_callback =
 614          wl_surface_frame(dri2_surf->wl_win->surface);
 615       wl_callback_add_listener(dri2_surf->throttle_callback,
 616                                &throttle_listener, dri2_surf);
 617       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 618                          dri2_dpy->wl_queue);
 619    }
 620
 621    dri2_surf->back->age = 1;
 622    dri2_surf->current = dri2_surf->back;
 623    dri2_surf->back = NULL;
 624
 625    create_wl_buffer(dri2_surf);
 626
 627    wl_surface_attach(dri2_surf->wl_win->surface,
 628                      dri2_surf->current->wl_buffer,
 629                      dri2_surf->dx, dri2_surf->dy);
 630
 631    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 632    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 633    /* reset resize growing parameters */
 634    dri2_surf->dx = 0;
 635    dri2_surf->dy = 0;
 636
 637    if (n_rects == 0) {
 638       wl_surface_damage(dri2_surf->wl_win->surface,
 639                         0, 0, INT32_MAX, INT32_MAX);
 640    } else {
 641       for (i = 0; i < n_rects; i++) {
 642          const int *rect = &rects[i * 4];
 643          wl_surface_damage(dri2_surf->wl_win->surface,
 644                            rect[0],
 645                            dri2_surf->base.Height - rect[1] - rect[3],
 646                            rect[2], rect[3]);
 647       }
 648    }
 649
 650    dri2_flush_drawable_for_swapbuffers(disp, draw);
 651    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 652
 653    wl_surface_commit(dri2_surf->wl_win->surface);
 654
 655    /* If we're not waiting for a frame callback then we'll at least throttle
 656     * to a sync callback so that we always give a chance for the compositor to
 657     * handle the commit and send a release event before checking for a free
 658     * buffer */
 659    if (dri2_surf->throttle_callback == NULL) {
 660       dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
 661       wl_callback_add_listener(dri2_surf->throttle_callback,
 662                                &throttle_listener, dri2_surf);
 663       wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
 664                          dri2_dpy->wl_queue);
 665    }
 666
 667    wl_display_flush(dri2_dpy->wl_dpy);
 668
 669    return EGL_TRUE;
 670 }
 671
 672 static EGLint
 673 dri2_wl_query_buffer_age(_EGLDriver *drv,
 674                          _EGLDisplay *disp, _EGLSurface *surface)
 675 {
 676    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 677
 678    if (get_back_bo(dri2_surf) < 0) {
 679       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 680       return 0;
 681    }
 682
 683    return dri2_surf->back->age;
 684 }
 685
 686 static EGLBoolean
 687 dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 688 {
 689    return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 690 }
 691
 692 static struct wl_buffer *
 693 dri2_wl_create_wayland_buffer_from_image(_EGLDriver *drv,
 694                                           _EGLDisplay *disp,
 695                                           _EGLImage *img)
 696 {
 697    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 698    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 699    __DRIimage *image = dri2_img->dri_image;
 700    struct wl_buffer *buffer;
 701    int width, height, format, pitch;
 702    enum wl_drm_format wl_format;
 703
 704    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 705
 706    switch (format) {
 707    case __DRI_IMAGE_FORMAT_ARGB8888:
 708       if (!(dri2_dpy->formats & HAS_ARGB8888))
 709          goto bad_format;
 710       wl_format = WL_DRM_FORMAT_ARGB8888;
 711       break;
 712    case __DRI_IMAGE_FORMAT_XRGB8888:
 713       if (!(dri2_dpy->formats & HAS_XRGB8888))
 714          goto bad_format;
 715       wl_format = WL_DRM_FORMAT_XRGB8888;
 716       break;
 717    default:
 718       goto bad_format;
 719    }
 720
 721    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 722    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 723    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 724
 725    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 726       int fd;
 727
 728       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 729
 730       buffer =
 731          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 732                                     fd,
 733                                     width, height,
 734                                     wl_format,
 735                                     0, pitch,
 736                                     0, 0,
 737                                     0, 0);
 738
 739       close(fd);
 740    } else {
 741       int name;
 742
 743       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 744
 745       buffer =
 746          wl_drm_create_buffer(dri2_dpy->wl_drm,
 747                               name,
 748                               width, height,
 749                               pitch,
 750                               wl_format);
 751    }
 752
 753    /* The buffer object will have been created with our internal event queue
 754     * because it is using the wl_drm object as a proxy factory. We want the
 755     * buffer to be used by the application so we'll reset it to the display's
 756     * default event queue */
 757    if (buffer)
 758       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 759
 760    return buffer;
 761
 762 bad_format:
 763    _eglError(EGL_BAD_MATCH, "unsupported image format");
 764    return NULL;
 765 }
 766
 767 static int
 768 dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
 769 {
 770    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 771    int ret = 0;
 772
 773    dri2_dpy->authenticated = 0;
 774
 775    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 776    if (roundtrip(dri2_dpy) < 0)
 777       ret = -1;
 778
 779    if (!dri2_dpy->authenticated)
 780       ret = -1;
 781
 782    /* reset authenticated */
 783    dri2_dpy->authenticated = 1;
 784
 785    return ret;
 786 }
 787
 788 static void
 789 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 790 {
 791    struct dri2_egl_display *dri2_dpy = data;
 792    drm_magic_t magic;
 793
 794    dri2_dpy->device_name = strdup(device);
 795    if (!dri2_dpy->device_name)
 796       return;
 797
 798 #ifdef O_CLOEXEC
 799    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 800    if (dri2_dpy->fd == -1 && errno == EINVAL)
 801 #endif
 802    {
 803       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 804       if (dri2_dpy->fd != -1)
 805          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 806             FD_CLOEXEC);
 807    }
 808    if (dri2_dpy->fd == -1) {
 809       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 810               dri2_dpy->device_name, strerror(errno));
 811       return;
 812    }
 813
 814    drmGetMagic(dri2_dpy->fd, &magic);
 815    wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 816 }
 817
 818 static void
 819 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 820 {
 821    struct dri2_egl_display *dri2_dpy = data;
 822
 823    switch (format) {
 824    case WL_DRM_FORMAT_ARGB8888:
 825       dri2_dpy->formats |= HAS_ARGB8888;
 826       break;
 827    case WL_DRM_FORMAT_XRGB8888:
 828       dri2_dpy->formats |= HAS_XRGB8888;
 829       break;
 830    case WL_DRM_FORMAT_RGB565:
 831       dri2_dpy->formats |= HAS_RGB565;
 832       break;
 833    }
 834 }
 835
 836 static void
 837 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 838 {
 839    struct dri2_egl_display *dri2_dpy = data;
 840
 841    dri2_dpy->capabilities = value;
 842 }
 843
 844 static void
 845 drm_handle_authenticated(void *data, struct wl_drm *drm)
 846 {
 847    struct dri2_egl_display *dri2_dpy = data;
 848
 849    dri2_dpy->authenticated = 1;
 850 }
 851
 852 static const struct wl_drm_listener drm_listener = {
 853         drm_handle_device,
 854         drm_handle_format,
 855         drm_handle_authenticated,
 856         drm_handle_capabilities
 857 };
 858
 859 static void
 860 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 861                        const char *interface, uint32_t version)
 862 {
 863    struct dri2_egl_display *dri2_dpy = data;
 864
 865    if (version > 1)
 866       version = 2;
 867    if (strcmp(interface, "wl_drm") == 0) {
 868       dri2_dpy->wl_drm =
 869          wl_registry_bind(registry, name, &wl_drm_interface, version);
 870       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 871    }
 872 }
 873
 874 static void
 875 registry_handle_global_remove(void *data, struct wl_registry *registry,
 876                               uint32_t name)
 877 {
 878 }
 879
 880 static const struct wl_registry_listener registry_listener = {
 881    registry_handle_global,
 882    registry_handle_global_remove
 883 };
 884
 885 static EGLBoolean
 886 dri2_wl_swap_interval(_EGLDriver *drv,
 887                    _EGLDisplay *disp,
 888                    _EGLSurface *surf,
 889                    EGLint interval)
 890 {
 891    if (interval > surf->Config->MaxSwapInterval)
 892       interval = surf->Config->MaxSwapInterval;
 893    else if (interval < surf->Config->MinSwapInterval)
 894       interval = surf->Config->MinSwapInterval;
 895
 896    surf->SwapInterval = interval;
 897
 898    return EGL_TRUE;
 899 }
 900
 901 static void
 902 dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
 903 {
 904    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 905
 906    /* We can't use values greater than 1 on Wayland because we are using the
 907     * frame callback to synchronise the frame and the only way we be sure to
 908     * get a frame callback is to attach a new buffer. Therefore we can't just
 909     * sit drawing nothing to wait until the next ‘n’ frame callbacks */
 910
 911    if (dri2_dpy->config)
 912       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 913                                      "vblank_mode", &vblank_mode);
 914    switch (vblank_mode) {
 915    case DRI_CONF_VBLANK_NEVER:
 916       dri2_dpy->min_swap_interval = 0;
 917       dri2_dpy->max_swap_interval = 0;
 918       dri2_dpy->default_swap_interval = 0;
 919       break;
 920    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 921       dri2_dpy->min_swap_interval = 1;
 922       dri2_dpy->max_swap_interval = 1;
 923       dri2_dpy->default_swap_interval = 1;
 924       break;
 925    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 926       dri2_dpy->min_swap_interval = 0;
 927       dri2_dpy->max_swap_interval = 1;
 928       dri2_dpy->default_swap_interval = 0;
 929       break;
 930    default:
 931    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 932       dri2_dpy->min_swap_interval = 0;
 933       dri2_dpy->max_swap_interval = 1;
 934       dri2_dpy->default_swap_interval = 1;
 935       break;
 936    }
 937 }
 938
 939 static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
 940    .authenticate = dri2_wl_authenticate,
 941    .create_window_surface = dri2_wl_create_window_surface,
 942    .create_pixmap_surface = dri2_wl_create_pixmap_surface,
 943    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
 944    .destroy_surface = dri2_wl_destroy_surface,
 945    .create_image = dri2_create_image_khr,
 946    .swap_interval = dri2_wl_swap_interval,
 947    .swap_buffers = dri2_wl_swap_buffers,
 948    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
 949    .swap_buffers_region = dri2_fallback_swap_buffers_region,
 950    .post_sub_buffer = dri2_fallback_post_sub_buffer,
 951    .copy_buffers = dri2_fallback_copy_buffers,
 952    .query_buffer_age = dri2_wl_query_buffer_age,
 953    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
 954    .get_sync_values = dri2_fallback_get_sync_values,
 955 };
 956
 957 EGLBoolean
 958 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
 959 {
 960    struct dri2_egl_display *dri2_dpy;
 961    const __DRIconfig *config;
 962    uint32_t types;
 963    int i;
 964    static const unsigned int argb_masks[4] =
 965       { 0xff0000, 0xff00, 0xff, 0xff000000 };
 966    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
 967    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
 968
 969    loader_set_logger(_eglLog);
 970
 971    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 972    if (!dri2_dpy)
 973       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 974
 975    disp->DriverData = (void *) dri2_dpy;
 976    if (disp->PlatformDisplay == NULL) {
 977       dri2_dpy->wl_dpy = wl_display_connect(NULL);
 978       if (dri2_dpy->wl_dpy == NULL)
 979          goto cleanup_dpy;
 980       dri2_dpy->own_device = 1;
 981    } else {
 982       dri2_dpy->wl_dpy = disp->PlatformDisplay;
 983    }
 984
 985    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 986
 987    if (dri2_dpy->own_device)
 988       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
 989
 990    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
 991    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
 992                       dri2_dpy->wl_queue);
 993    wl_registry_add_listener(dri2_dpy->wl_registry,
 994                             &registry_listener, dri2_dpy);
 995    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
 996       goto cleanup_dpy;
 997
 998    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
 999       goto cleanup_drm;
1000
1001    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
1002       goto cleanup_fd;
1003
1004    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
1005    if (dri2_dpy->driver_name == NULL) {
1006       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
1007       goto cleanup_fd;
1008    }
1009
1010    if (!dri2_load_driver(disp))
1011       goto cleanup_driver_name;
1012
1013    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1014    dri2_dpy->dri2_loader_extension.base.version = 3;
1015    dri2_dpy->dri2_loader_extension.getBuffers = dri2_wl_get_buffers;
1016    dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_wl_flush_front_buffer;
1017    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1018       dri2_wl_get_buffers_with_format;
1019
1020    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
1021    dri2_dpy->extensions[1] = &image_loader_extension.base;
1022    dri2_dpy->extensions[2] = &image_lookup_extension.base;
1023    dri2_dpy->extensions[3] = &use_invalidate.base;
1024    dri2_dpy->extensions[4] = NULL;
1025
1026    dri2_dpy->swap_available = EGL_TRUE;
1027
1028    if (!dri2_create_screen(disp))
1029       goto cleanup_driver;
1030
1031    dri2_wl_setup_swap_interval(dri2_dpy);
1032
1033    /* The server shouldn't advertise WL_DRM_CAPABILITY_PRIME if the driver
1034     * doesn't have createImageFromFds, since we're using the same driver on
1035     * both sides.  We don't want crash if that happens anyway, so fall back to
1036     * gem names if we don't have prime support. */
1037
1038    if (dri2_dpy->image->base.version < 7 ||
1039        dri2_dpy->image->createImageFromFds == NULL)
1040       dri2_dpy->capabilities &= ~WL_DRM_CAPABILITY_PRIME;
1041
1042    types = EGL_WINDOW_BIT;
1043    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1044       config = dri2_dpy->driver_configs[i];
1045       if (dri2_dpy->formats & HAS_XRGB8888)
1046          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
1047       if (dri2_dpy->formats & HAS_ARGB8888)
1048          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
1049       if (dri2_dpy->formats & HAS_RGB565)
1050         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
1051    }
1052
1053    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1054    disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
1055    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1056
1057    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
1058
1059    /* we're supporting EGL 1.4 */
1060    disp->VersionMajor = 1;
1061    disp->VersionMinor = 4;
1062
1063    /* Fill vtbl last to prevent accidentally calling virtual function during
1064     * initialization.
1065     */
1066    dri2_dpy->vtbl = &dri2_wl_display_vtbl;
1067
1068    return EGL_TRUE;
1069
1070  cleanup_driver:
1071    dlclose(dri2_dpy->driver);
1072  cleanup_driver_name:
1073    free(dri2_dpy->driver_name);
1074  cleanup_fd:
1075    close(dri2_dpy->fd);
1076  cleanup_drm:
1077    free(dri2_dpy->device_name);
1078    wl_drm_destroy(dri2_dpy->wl_drm);
1079  cleanup_dpy:
1080    free(dri2_dpy);
1081
1082    return EGL_FALSE;
1083 }