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
  40 #include <wayland-client.h>
  41 #include "wayland-drm-client-protocol.h"
  42
  43 enum wl_drm_format_flags {
  44    HAS_ARGB8888 = 1,
  45    HAS_XRGB8888 = 2,
  46    HAS_RGB565 = 4,
  47 };
  48
  49 static void
  50 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  51 {
  52    int *done = data;
  53
  54    *done = 1;
  55    wl_callback_destroy(callback);
  56 }
  57
  58 static const struct wl_callback_listener sync_listener = {
  59    sync_callback
  60 };
  61
  62 static int
  63 roundtrip(struct dri2_egl_display *dri2_dpy)
  64 {
  65    struct wl_callback *callback;
  66    int done = 0, ret = 0;
  67
  68    callback = wl_display_sync(dri2_dpy->wl_dpy);
  69    wl_callback_add_listener(callback, &sync_listener, &done);
  70    wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
  71    while (ret != -1 && !done)
  72       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  73
  74    if (!done)
  75       wl_callback_destroy(callback);
  76
  77    return ret;
  78 }
  79
  80 static void
  81 wl_buffer_release(void *data, struct wl_buffer *buffer)
  82 {
  83    struct dri2_egl_surface *dri2_surf = data;
  84    int i;
  85
  86    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
  87       if (dri2_surf->color_buffers[i].wl_buffer == buffer)
  88          break;
  89
  90    if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
  91       wl_buffer_destroy(buffer);
  92       return;
  93    }
  94
  95    dri2_surf->color_buffers[i].locked = 0;
  96 }
  97
  98 static struct wl_buffer_listener wl_buffer_listener = {
  99    wl_buffer_release
 100 };
 101
 102 static void
 103 resize_callback(struct wl_egl_window *wl_win, void *data)
 104 {
 105    struct dri2_egl_surface *dri2_surf = data;
 106    struct dri2_egl_display *dri2_dpy =
 107       dri2_egl_display(dri2_surf->base.Resource.Display);
 108
 109    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 110 }
 111
 112 /**
 113  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 114  */
 115 static _EGLSurface *
 116 dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 117                     _EGLConfig *conf, EGLNativeWindowType window,
 118                     const EGLint *attrib_list)
 119 {
 120    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 121    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 122    struct dri2_egl_surface *dri2_surf;
 123
 124    (void) drv;
 125
 126    dri2_surf = malloc(sizeof *dri2_surf);
 127    if (!dri2_surf) {
 128       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 129       return NULL;
 130    }
 131
 132    memset(dri2_surf, 0, sizeof *dri2_surf);
 133    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 134       goto cleanup_surf;
 135
 136    if (conf->RedSize == 5)
 137       dri2_surf->format = WL_DRM_FORMAT_RGB565;
 138    else if (conf->AlphaSize == 0)
 139       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 140    else
 141       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 142
 143    switch (type) {
 144    case EGL_WINDOW_BIT:
 145       dri2_surf->wl_win = (struct wl_egl_window *) window;
 146
 147       dri2_surf->wl_win->private = dri2_surf;
 148       dri2_surf->wl_win->resize_callback = resize_callback;
 149
 150       dri2_surf->base.Width =  -1;
 151       dri2_surf->base.Height = -1;
 152       break;
 153    default:
 154       goto cleanup_surf;
 155    }
 156
 157    dri2_surf->dri_drawable =
 158       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 159                                             type == EGL_WINDOW_BIT ?
 160                                             dri2_conf->dri_double_config :
 161                                             dri2_conf->dri_single_config,
 162                                             dri2_surf);
 163    if (dri2_surf->dri_drawable == NULL) {
 164       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 165       goto cleanup_dri_drawable;
 166    }
 167
 168    return &dri2_surf->base;
 169
 170  cleanup_dri_drawable:
 171    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 172  cleanup_surf:
 173    free(dri2_surf);
 174
 175    return NULL;
 176 }
 177
 178 /**
 179  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 180  */
 181 static _EGLSurface *
 182 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 183                            _EGLConfig *conf, EGLNativeWindowType window,
 184                            const EGLint *attrib_list)
 185 {
 186    return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 187                               window, attrib_list);
 188 }
 189
 190 /**
 191  * Called via eglDestroySurface(), drv->API.DestroySurface().
 192  */
 193 static EGLBoolean
 194 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 195 {
 196    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 197    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 198    int i;
 199
 200    (void) drv;
 201
 202    if (!_eglPutSurface(surf))
 203       return EGL_TRUE;
 204
 205    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 206
 207    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 208       if (dri2_surf->color_buffers[i].wl_buffer)
 209          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 210       if (dri2_surf->color_buffers[i].dri_image)
 211          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 212    }
 213
 214    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 215       if (dri2_surf->dri_buffers[i] &&
 216           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 217          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 218                                        dri2_surf->dri_buffers[i]);
 219
 220    if (dri2_surf->frame_callback)
 221       wl_callback_destroy(dri2_surf->frame_callback);
 222
 223    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 224       dri2_surf->wl_win->private = NULL;
 225       dri2_surf->wl_win->resize_callback = NULL;
 226    }
 227
 228    free(surf);
 229
 230    return EGL_TRUE;
 231 }
 232
 233 static void
 234 dri2_release_buffers(struct dri2_egl_surface *dri2_surf)
 235 {
 236    struct dri2_egl_display *dri2_dpy =
 237       dri2_egl_display(dri2_surf->base.Resource.Display);
 238    int i;
 239
 240    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 241       if (dri2_surf->color_buffers[i].wl_buffer &&
 242           !dri2_surf->color_buffers[i].locked)
 243          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 244       if (dri2_surf->color_buffers[i].dri_image)
 245          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 246
 247       dri2_surf->color_buffers[i].wl_buffer = NULL;
 248       dri2_surf->color_buffers[i].dri_image = NULL;
 249       dri2_surf->color_buffers[i].locked = 0;
 250    }
 251
 252    for (i = 0; i < __DRI_BUFFER_COUNT; i++)
 253       if (dri2_surf->dri_buffers[i] &&
 254           dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
 255          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 256                                        dri2_surf->dri_buffers[i]);
 257 }
 258
 259 static int
 260 get_back_bo(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 261 {
 262    struct dri2_egl_display *dri2_dpy =
 263       dri2_egl_display(dri2_surf->base.Resource.Display);
 264    __DRIimage *image;
 265    int i, name, pitch;
 266
 267    /* There might be a buffer release already queued that wasn't processed */
 268    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 269
 270    if (dri2_surf->back == NULL) {
 271       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 272          /* Get an unlocked buffer, preferrably one with a dri_buffer already
 273           * allocated. */
 274          if (dri2_surf->color_buffers[i].locked)
 275             continue;
 276          if (dri2_surf->back == NULL)
 277             dri2_surf->back = &dri2_surf->color_buffers[i];
 278          else if (dri2_surf->back->dri_image == NULL)
 279             dri2_surf->back = &dri2_surf->color_buffers[i];
 280       }
 281    }
 282
 283    if (dri2_surf->back == NULL)
 284       return -1;
 285    if (dri2_surf->back->dri_image == NULL) {
 286       dri2_surf->back->dri_image =
 287          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 288                                       dri2_surf->base.Width,
 289                                       dri2_surf->base.Height,
 290                                       __DRI_IMAGE_FORMAT_ARGB8888,
 291                                       __DRI_IMAGE_USE_SHARE,
 292                                       NULL);
 293       dri2_surf->back->age = 0;
 294    }
 295    if (dri2_surf->back->dri_image == NULL)
 296       return -1;
 297
 298    image = dri2_surf->back->dri_image;
 299
 300    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 301    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 302
 303    dri2_surf->back->name = name;
 304    dri2_surf->back->pitch = pitch;
 305
 306    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 307    buffer->name = name;
 308    buffer->pitch = pitch;
 309    buffer->cpp = 4;
 310    buffer->flags = 0;
 311
 312    dri2_surf->back->locked = 1;
 313
 314    return 0;
 315 }
 316
 317 static int
 318 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 319            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 320 {
 321    struct dri2_egl_display *dri2_dpy =
 322       dri2_egl_display(dri2_surf->base.Resource.Display);
 323    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 324
 325    if (b == NULL) {
 326       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 327                                          attachment, format,
 328                                          dri2_surf->base.Width,
 329                                          dri2_surf->base.Height);
 330       dri2_surf->dri_buffers[attachment] = b;
 331    }
 332    if (b == NULL)
 333       return -1;
 334
 335    memcpy(buffer, b, sizeof *buffer);
 336
 337    return 0;
 338 }
 339
 340 static __DRIbuffer *
 341 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 342                              int *width, int *height,
 343                              unsigned int *attachments, int count,
 344                              int *out_count, void *loaderPrivate)
 345 {
 346    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 347    struct dri2_egl_display *dri2_dpy =
 348       dri2_egl_display(dri2_surf->base.Resource.Display);
 349    int i, j;
 350
 351    if (dri2_surf->base.Type == EGL_WINDOW_BIT &&
 352        (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 353         dri2_surf->base.Height != dri2_surf->wl_win->height)) {
 354
 355       dri2_release_buffers(dri2_surf);
 356
 357       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 358       dri2_surf->base.Height = dri2_surf->wl_win->height;
 359       dri2_surf->dx = dri2_surf->wl_win->dx;
 360       dri2_surf->dy = dri2_surf->wl_win->dy;
 361    }
 362
 363    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 364       switch (attachments[i]) {
 365       case __DRI_BUFFER_BACK_LEFT:
 366          if (get_back_bo(dri2_surf, &dri2_surf->buffers[j]) < 0) {
 367             _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 368             return NULL;
 369          }
 370          break;
 371       default:
 372          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 373                         &dri2_surf->buffers[j]) < 0) {
 374             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 375             return NULL;
 376          }
 377          break;
 378       }
 379    }
 380
 381    /* If we have an extra unlocked buffer at this point, we had to do triple
 382     * buffering for a while, but now can go back to just double buffering.
 383     * That means we can free any unlocked buffer now. */
 384    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 385       if (!dri2_surf->color_buffers[i].locked &&
 386           dri2_surf->color_buffers[i].wl_buffer) {
 387          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 388          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 389          dri2_surf->color_buffers[i].wl_buffer = NULL;
 390          dri2_surf->color_buffers[i].dri_image = NULL;
 391       }
 392    }
 393
 394    *out_count = j;
 395    if (j == 0)
 396            return NULL;
 397
 398    *width = dri2_surf->base.Width;
 399    *height = dri2_surf->base.Height;
 400
 401    return dri2_surf->buffers;
 402 }
 403
 404 static __DRIbuffer *
 405 dri2_get_buffers(__DRIdrawable * driDrawable,
 406                  int *width, int *height,
 407                  unsigned int *attachments, int count,
 408                  int *out_count, void *loaderPrivate)
 409 {
 410    unsigned int *attachments_with_format;
 411    __DRIbuffer *buffer;
 412    const unsigned int format = 32;
 413    int i;
 414
 415    attachments_with_format = calloc(count * 2, sizeof(unsigned int));
 416    if (!attachments_with_format) {
 417       *out_count = 0;
 418       return NULL;
 419    }
 420
 421    for (i = 0; i < count; ++i) {
 422       attachments_with_format[2*i] = attachments[i];
 423       attachments_with_format[2*i + 1] = format;
 424    }
 425
 426    buffer =
 427       dri2_get_buffers_with_format(driDrawable,
 428                                    width, height,
 429                                    attachments_with_format, count,
 430                                    out_count, loaderPrivate);
 431
 432    free(attachments_with_format);
 433
 434    return buffer;
 435 }
 436
 437 static void
 438 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 439 {
 440    (void) driDrawable;
 441    (void) loaderPrivate;
 442 }
 443
 444 static void
 445 wayland_frame_callback(void *data, struct wl_callback *callback, uint32_t time)
 446 {
 447    struct dri2_egl_surface *dri2_surf = data;
 448
 449    dri2_surf->frame_callback = NULL;
 450    wl_callback_destroy(callback);
 451 }
 452
 453 static const struct wl_callback_listener frame_listener = {
 454         wayland_frame_callback
 455 };
 456
 457 static void
 458 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 459 {
 460    struct dri2_egl_display *dri2_dpy =
 461       dri2_egl_display(dri2_surf->base.Resource.Display);
 462    int fd;
 463
 464    if (dri2_surf->current->wl_buffer != NULL)
 465       return;
 466
 467    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 468       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 469                                   __DRI_IMAGE_ATTRIB_FD, &fd);
 470
 471       dri2_surf->current->wl_buffer =
 472          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 473                                     fd,
 474                                     dri2_surf->base.Width,
 475                                     dri2_surf->base.Height,
 476                                     dri2_surf->format,
 477                                     0, dri2_surf->current->pitch,
 478                                     0, 0,
 479                                     0, 0);
 480       close(fd);
 481    } else {
 482       dri2_surf->current->wl_buffer =
 483          wl_drm_create_buffer(dri2_dpy->wl_drm,
 484                               dri2_surf->current->name,
 485                               dri2_surf->base.Width,
 486                               dri2_surf->base.Height,
 487                               dri2_surf->current->pitch,
 488                               dri2_surf->format);
 489    }
 490
 491    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 492                       dri2_dpy->wl_queue);
 493    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 494                           &wl_buffer_listener, dri2_surf);
 495 }
 496
 497 /**
 498  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 499  */
 500 static EGLBoolean
 501 dri2_swap_buffers_with_damage(_EGLDriver *drv,
 502                               _EGLDisplay *disp,
 503                               _EGLSurface *draw,
 504                               const EGLint *rects,
 505                               EGLint n_rects)
 506 {
 507    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 508    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 509    __DRIbuffer buffer;
 510    int i, ret = 0;
 511
 512    while (dri2_surf->frame_callback && ret != -1)
 513       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 514    if (ret < 0)
 515       return EGL_FALSE;
 516
 517    dri2_surf->frame_callback = wl_surface_frame(dri2_surf->wl_win->surface);
 518    wl_callback_add_listener(dri2_surf->frame_callback,
 519                             &frame_listener, dri2_surf);
 520    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->frame_callback,
 521                       dri2_dpy->wl_queue);
 522
 523    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 524       if (dri2_surf->color_buffers[i].age > 0)
 525          dri2_surf->color_buffers[i].age++;
 526
 527    /* Make sure we have a back buffer in case we're swapping without ever
 528     * rendering. */
 529    if (get_back_bo(dri2_surf, &buffer) < 0) {
 530       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 531       return EGL_FALSE;
 532    }
 533
 534    dri2_surf->back->age = 1;
 535    dri2_surf->current = dri2_surf->back;
 536    dri2_surf->back = NULL;
 537
 538    create_wl_buffer(dri2_surf);
 539
 540    wl_surface_attach(dri2_surf->wl_win->surface,
 541                      dri2_surf->current->wl_buffer,
 542                      dri2_surf->dx, dri2_surf->dy);
 543
 544    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 545    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 546    /* reset resize growing parameters */
 547    dri2_surf->dx = 0;
 548    dri2_surf->dy = 0;
 549
 550    if (n_rects == 0) {
 551       wl_surface_damage(dri2_surf->wl_win->surface, 0, 0,
 552                         dri2_surf->base.Width, dri2_surf->base.Height);
 553    } else {
 554       for (i = 0; i < n_rects; i++) {
 555          const int *rect = &rects[i * 4];
 556          wl_surface_damage(dri2_surf->wl_win->surface,
 557                            rect[0],
 558                            dri2_surf->base.Height - rect[1] - rect[3],
 559                            rect[2], rect[3]);
 560       }
 561    }
 562
 563    wl_surface_commit(dri2_surf->wl_win->surface);
 564
 565    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 566    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 567
 568    return EGL_TRUE;
 569 }
 570
 571 static EGLint
 572 dri2_query_buffer_age(_EGLDriver *drv,
 573                       _EGLDisplay *disp, _EGLSurface *surface)
 574 {
 575    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 576    __DRIbuffer buffer;
 577
 578    if (get_back_bo(dri2_surf, &buffer) < 0) {
 579       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 580       return 0;
 581    }
 582
 583    return dri2_surf->back->age;
 584 }
 585
 586 static EGLBoolean
 587 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 588 {
 589    return dri2_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 590 }
 591
 592 static int
 593 dri2_wayland_authenticate(_EGLDisplay *disp, uint32_t id)
 594 {
 595    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 596    int ret = 0;
 597
 598    dri2_dpy->authenticated = 0;
 599
 600    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 601    if (roundtrip(dri2_dpy) < 0)
 602       ret = -1;
 603
 604    if (!dri2_dpy->authenticated)
 605       ret = -1;
 606
 607    /* reset authenticated */
 608    dri2_dpy->authenticated = 1;
 609
 610    return ret;
 611 }
 612
 613 /**
 614  * Called via eglTerminate(), drv->API.Terminate().
 615  */
 616 static EGLBoolean
 617 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 618 {
 619    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 620
 621    _eglReleaseDisplayResources(drv, disp);
 622    _eglCleanupDisplay(disp);
 623
 624    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 625    close(dri2_dpy->fd);
 626    dlclose(dri2_dpy->driver);
 627    free(dri2_dpy->driver_name);
 628    free(dri2_dpy->device_name);
 629    wl_drm_destroy(dri2_dpy->wl_drm);
 630    if (dri2_dpy->own_device)
 631       wl_display_disconnect(dri2_dpy->wl_dpy);
 632    free(dri2_dpy);
 633    disp->DriverData = NULL;
 634
 635    return EGL_TRUE;
 636 }
 637
 638 static void
 639 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 640 {
 641    struct dri2_egl_display *dri2_dpy = data;
 642    drm_magic_t magic;
 643
 644    dri2_dpy->device_name = strdup(device);
 645    if (!dri2_dpy->device_name)
 646       return;
 647
 648 #ifdef O_CLOEXEC
 649    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 650    if (dri2_dpy->fd == -1 && errno == EINVAL)
 651 #endif
 652    {
 653       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 654       if (dri2_dpy->fd != -1)
 655          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 656             FD_CLOEXEC);
 657    }
 658    if (dri2_dpy->fd == -1) {
 659       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 660               dri2_dpy->device_name, strerror(errno));
 661       return;
 662    }
 663
 664    drmGetMagic(dri2_dpy->fd, &magic);
 665    wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 666 }
 667
 668 static void
 669 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 670 {
 671    struct dri2_egl_display *dri2_dpy = data;
 672
 673    switch (format) {
 674    case WL_DRM_FORMAT_ARGB8888:
 675       dri2_dpy->formats |= HAS_ARGB8888;
 676       break;
 677    case WL_DRM_FORMAT_XRGB8888:
 678       dri2_dpy->formats |= HAS_XRGB8888;
 679       break;
 680    case WL_DRM_FORMAT_RGB565:
 681       dri2_dpy->formats |= HAS_RGB565;
 682       break;
 683    }
 684 }
 685
 686 static void
 687 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 688 {
 689    struct dri2_egl_display *dri2_dpy = data;
 690
 691    dri2_dpy->capabilities = value;
 692 }
 693
 694 static void
 695 drm_handle_authenticated(void *data, struct wl_drm *drm)
 696 {
 697    struct dri2_egl_display *dri2_dpy = data;
 698
 699    dri2_dpy->authenticated = 1;
 700 }
 701
 702 static const struct wl_drm_listener drm_listener = {
 703         drm_handle_device,
 704         drm_handle_format,
 705         drm_handle_authenticated,
 706         drm_handle_capabilities
 707 };
 708
 709 static void
 710 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 711                        const char *interface, uint32_t version)
 712 {
 713    struct dri2_egl_display *dri2_dpy = data;
 714
 715    if (version > 1)
 716       version = 2;
 717    if (strcmp(interface, "wl_drm") == 0) {
 718       dri2_dpy->wl_drm =
 719          wl_registry_bind(registry, name, &wl_drm_interface, version);
 720       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 721    }
 722 }
 723
 724 static void
 725 registry_handle_global_remove(void *data, struct wl_registry *registry,
 726                               uint32_t name)
 727 {
 728 }
 729
 730 static const struct wl_registry_listener registry_listener = {
 731    registry_handle_global,
 732    registry_handle_global_remove
 733 };
 734
 735 EGLBoolean
 736 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
 737 {
 738    struct dri2_egl_display *dri2_dpy;
 739    const __DRIconfig *config;
 740    uint32_t types;
 741    int i;
 742    static const unsigned int argb_masks[4] =
 743       { 0xff0000, 0xff00, 0xff, 0xff000000 };
 744    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
 745    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
 746
 747    drv->API.CreateWindowSurface = dri2_create_window_surface;
 748    drv->API.DestroySurface = dri2_destroy_surface;
 749    drv->API.SwapBuffers = dri2_swap_buffers;
 750    drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
 751    drv->API.Terminate = dri2_terminate;
 752    drv->API.QueryBufferAge = dri2_query_buffer_age;
 753
 754    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 755    if (!dri2_dpy)
 756       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 757
 758    disp->DriverData = (void *) dri2_dpy;
 759    if (disp->PlatformDisplay == NULL) {
 760       dri2_dpy->wl_dpy = wl_display_connect(NULL);
 761       if (dri2_dpy->wl_dpy == NULL)
 762          goto cleanup_dpy;
 763       dri2_dpy->own_device = 1;
 764    } else {
 765       dri2_dpy->wl_dpy = disp->PlatformDisplay;
 766    }
 767
 768    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 769
 770    if (dri2_dpy->own_device)
 771       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
 772
 773    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
 774    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
 775                       dri2_dpy->wl_queue);
 776    wl_registry_add_listener(dri2_dpy->wl_registry,
 777                             &registry_listener, dri2_dpy);
 778    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
 779       goto cleanup_dpy;
 780
 781    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
 782       goto cleanup_drm;
 783
 784    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
 785       goto cleanup_fd;
 786
 787    dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
 788    if (dri2_dpy->driver_name == NULL) {
 789       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
 790       goto cleanup_fd;
 791    }
 792
 793    if (!dri2_load_driver(disp))
 794       goto cleanup_driver_name;
 795
 796    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 797    dri2_dpy->dri2_loader_extension.base.version = 3;
 798    dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
 799    dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 800    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 801       dri2_get_buffers_with_format;
 802
 803    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 804    dri2_dpy->extensions[1] = &image_lookup_extension.base;
 805    dri2_dpy->extensions[2] = &use_invalidate.base;
 806    dri2_dpy->extensions[3] = NULL;
 807
 808    if (!dri2_create_screen(disp))
 809       goto cleanup_driver;
 810
 811    /* The server shouldn't advertise WL_DRM_CAPABILITY_PRIME if the driver
 812     * doesn't have createImageFromFds, since we're using the same driver on
 813     * both sides.  We don't want crash if that happens anyway, so fall back to
 814     * gem names if we don't have prime support. */
 815
 816    if (dri2_dpy->image->base.version < 7 ||
 817        dri2_dpy->image->createImageFromFds == NULL)
 818       dri2_dpy->capabilities &= WL_DRM_CAPABILITY_PRIME;
 819
 820    types = EGL_WINDOW_BIT;
 821    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
 822       config = dri2_dpy->driver_configs[i];
 823       if (dri2_dpy->formats & HAS_XRGB8888)
 824          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
 825       if (dri2_dpy->formats & HAS_ARGB8888)
 826          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
 827       if (dri2_dpy->formats & HAS_RGB565)
 828         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
 829    }
 830
 831    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
 832    disp->Extensions.EXT_buffer_age = EGL_TRUE;
 833    dri2_dpy->authenticate = dri2_wayland_authenticate;
 834
 835    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
 836
 837    /* we're supporting EGL 1.4 */
 838    disp->VersionMajor = 1;
 839    disp->VersionMinor = 4;
 840
 841    return EGL_TRUE;
 842
 843  cleanup_driver:
 844    dlclose(dri2_dpy->driver);
 845  cleanup_driver_name:
 846    free(dri2_dpy->driver_name);
 847  cleanup_fd:
 848    close(dri2_dpy->fd);
 849  cleanup_drm:
 850    free(dri2_dpy->device_name);
 851    wl_drm_destroy(dri2_dpy->wl_drm);
 852  cleanup_dpy:
 853    free(dri2_dpy);
 854
 855    return EGL_FALSE;
 856 }