src/egl/drivers/dri2/platform_wayland.c

   1 /*
   2  * Copyright © 2011 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 static void
  44 sync_callback(void *data)
  45 {
  46    int *done = data;
  47
  48    *done = 1;
  49 }
  50
  51 static void
  52 force_roundtrip(struct wl_display *display)
  53 {
  54    int done = 0;
  55
  56    wl_display_sync_callback(display, sync_callback, &done);
  57    wl_display_iterate(display, WL_DISPLAY_WRITABLE);
  58    while (!done)
  59       wl_display_iterate(display, WL_DISPLAY_READABLE);
  60 }
  61
  62
  63 /**
  64  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
  65  */
  66 static _EGLSurface *
  67 dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
  68                     _EGLConfig *conf, EGLNativeWindowType window,
  69                     const EGLint *attrib_list)
  70 {
  71    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
  72    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
  73    struct dri2_egl_surface *dri2_surf;
  74    struct dri2_egl_buffer *dri2_buf;
  75    int i;
  76
  77    (void) drv;
  78
  79    dri2_surf = malloc(sizeof *dri2_surf);
  80    if (!dri2_surf) {
  81       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
  82       return NULL;
  83    }
  84
  85    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
  86       goto cleanup_surf;
  87
  88    for (i = 0; i < WL_BUFFER_COUNT; ++i)
  89       dri2_surf->wl_drm_buffer[i] = NULL;
  90
  91    for (i = 0; i < __DRI_BUFFER_COUNT; ++i)
  92       dri2_surf->dri_buffers[i] = NULL;
  93
  94    dri2_surf->pending_buffer = NULL;
  95    dri2_surf->block_swap_buffers = EGL_FALSE;
  96
  97    switch (type) {
  98    case EGL_WINDOW_BIT:
  99       dri2_surf->wl_win = (struct wl_egl_window *) window;
 100       dri2_surf->type = DRI2_WINDOW_SURFACE;
 101
 102       dri2_surf->base.Width =  -1;
 103       dri2_surf->base.Height = -1;
 104       break;
 105    case EGL_PIXMAP_BIT:
 106       dri2_surf->wl_pix = (struct wl_egl_pixmap *) window;
 107       dri2_surf->type = DRI2_PIXMAP_SURFACE;
 108
 109       dri2_surf->base.Width  = dri2_surf->wl_pix->width;
 110       dri2_surf->base.Height = dri2_surf->wl_pix->height;
 111
 112       if (dri2_surf->wl_pix->driver_private) {
 113          dri2_buf = dri2_surf->wl_pix->driver_private;
 114          dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT] = dri2_buf->dri_buffer;
 115       }
 116       break;
 117    default:
 118       goto cleanup_surf;
 119    }
 120
 121    dri2_surf->dri_drawable =
 122       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 123                                             type == EGL_WINDOW_BIT ?
 124                                             dri2_conf->dri_double_config :
 125                                             dri2_conf->dri_single_config,
 126                                             dri2_surf);
 127    if (dri2_surf->dri_drawable == NULL) {
 128       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 129       goto cleanup_dri_drawable;
 130    }
 131
 132    return &dri2_surf->base;
 133
 134  cleanup_dri_drawable:
 135    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 136  cleanup_surf:
 137    free(dri2_surf);
 138
 139    return NULL;
 140 }
 141
 142 /**
 143  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 144  */
 145 static _EGLSurface *
 146 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 147                            _EGLConfig *conf, EGLNativeWindowType window,
 148                            const EGLint *attrib_list)
 149 {
 150    return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 151                               window, attrib_list);
 152 }
 153
 154 static _EGLSurface *
 155 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 156                            _EGLConfig *conf, EGLNativePixmapType pixmap,
 157                            const EGLint *attrib_list)
 158 {
 159    return dri2_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
 160                               pixmap, attrib_list);
 161 }
 162
 163 /**
 164  * Called via eglDestroySurface(), drv->API.DestroySurface().
 165  */
 166 static EGLBoolean
 167 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 168 {
 169    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 170    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 171    int i;
 172
 173    (void) drv;
 174
 175    if (!_eglPutSurface(surf))
 176       return EGL_TRUE;
 177
 178    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 179
 180    for (i = 0; i < WL_BUFFER_COUNT; ++i)
 181       if (dri2_surf->wl_drm_buffer[i])
 182          wl_buffer_destroy(dri2_surf->wl_drm_buffer[i]);
 183
 184    for (i = 0; i < __DRI_BUFFER_COUNT; ++i)
 185       if (dri2_surf->dri_buffers[i] && !(i == __DRI_BUFFER_FRONT_LEFT &&
 186           dri2_surf->type == DRI2_PIXMAP_SURFACE))
 187          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 188                                        dri2_surf->dri_buffers[i]);
 189
 190    free(surf);
 191
 192    return EGL_TRUE;
 193 }
 194
 195 static void
 196 dri2_wl_egl_pixmap_destroy(struct wl_egl_pixmap *egl_pixmap)
 197 {
 198    struct dri2_egl_buffer *dri2_buf = egl_pixmap->driver_private;
 199
 200    assert(dri2_buf);
 201
 202    dri2_buf->dri2_dpy->dri2->releaseBuffer(dri2_buf->dri2_dpy->dri_screen,
 203                                            dri2_buf->dri_buffer);
 204
 205    free(dri2_buf);
 206
 207    egl_pixmap->driver_private = NULL;
 208    egl_pixmap->destroy = NULL;
 209 }
 210
 211 static void
 212 dri2_process_back_buffer(struct dri2_egl_surface *dri2_surf, unsigned format)
 213 {
 214    struct dri2_egl_display *dri2_dpy =
 215       dri2_egl_display(dri2_surf->base.Resource.Display);
 216
 217    (void) format;
 218
 219    switch (dri2_surf->type) {
 220    case DRI2_WINDOW_SURFACE:
 221       /* allocate a front buffer for our double-buffered window*/
 222       dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT] =
 223          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 224                __DRI_BUFFER_FRONT_LEFT, format,
 225                dri2_surf->base.Width, dri2_surf->base.Height);
 226       break;
 227    default:
 228       break;
 229    }
 230 }
 231
 232 static void
 233 dri2_process_front_buffer(struct dri2_egl_surface *dri2_surf, unsigned format)
 234 {
 235    struct dri2_egl_display *dri2_dpy =
 236       dri2_egl_display(dri2_surf->base.Resource.Display);
 237    struct dri2_egl_buffer *dri2_buf;
 238
 239    switch (dri2_surf->type) {
 240    case DRI2_PIXMAP_SURFACE:
 241       dri2_buf = malloc(sizeof *dri2_buf);
 242       if (!dri2_buf)
 243          return;
 244
 245       dri2_buf->dri_buffer = dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT];
 246       dri2_buf->dri2_dpy   = dri2_dpy;
 247
 248       dri2_surf->wl_pix->driver_private = dri2_buf;
 249       dri2_surf->wl_pix->destroy        = dri2_wl_egl_pixmap_destroy;
 250       break;
 251    default:
 252       break;
 253    }
 254 }
 255
 256 static void
 257 dri2_release_pending_buffer(void *data)
 258 {
 259    struct dri2_egl_surface *dri2_surf = data;
 260    struct dri2_egl_display *dri2_dpy =
 261       dri2_egl_display(dri2_surf->base.Resource.Display);
 262
 263    /* FIXME: print internal error */
 264    if (!dri2_surf->pending_buffer)
 265       return;
 266
 267    dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 268                                  dri2_surf->pending_buffer);
 269    dri2_surf->pending_buffer = NULL;
 270 }
 271
 272 static void
 273 dri2_release_buffers(struct dri2_egl_surface *dri2_surf)
 274 {
 275    struct dri2_egl_display *dri2_dpy =
 276       dri2_egl_display(dri2_surf->base.Resource.Display);
 277    int i;
 278
 279    for (i = 0; i < __DRI_BUFFER_COUNT; ++i) {
 280       if (dri2_surf->dri_buffers[i]) {
 281          switch (i) {
 282          case __DRI_BUFFER_FRONT_LEFT:
 283             if (dri2_surf->pending_buffer)
 284                force_roundtrip(dri2_dpy->wl_dpy);
 285             dri2_surf->pending_buffer = dri2_surf->dri_buffers[i];
 286             wl_display_sync_callback(dri2_dpy->wl_dpy,
 287                                      dri2_release_pending_buffer, dri2_surf);
 288             break;
 289          default:
 290             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 291                                           dri2_surf->dri_buffers[i]);
 292             break;
 293          }
 294          dri2_surf->dri_buffers[i] = NULL;
 295       }
 296    }
 297 }
 298
 299 static __DRIbuffer *
 300 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 301                              int *width, int *height,
 302                              unsigned int *attachments, int count,
 303                              int *out_count, void *loaderPrivate)
 304 {
 305    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 306    struct dri2_egl_display *dri2_dpy =
 307       dri2_egl_display(dri2_surf->base.Resource.Display);
 308    int i;
 309
 310    if (dri2_surf->type == DRI2_WINDOW_SURFACE &&
 311        (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 312         dri2_surf->base.Height != dri2_surf->wl_win->height)) {
 313
 314       dri2_release_buffers(dri2_surf);
 315
 316       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 317       dri2_surf->base.Height = dri2_surf->wl_win->height;
 318       dri2_surf->dx = dri2_surf->wl_win->dx;
 319       dri2_surf->dy = dri2_surf->wl_win->dy;
 320
 321       for (i = 0; i < WL_BUFFER_COUNT; ++i) {
 322          if (dri2_surf->wl_drm_buffer[i])
 323             wl_buffer_destroy(dri2_surf->wl_drm_buffer[i]);
 324          dri2_surf->wl_drm_buffer[i]  = NULL;
 325       }
 326    }
 327
 328    dri2_surf->buffer_count = 0;
 329    for (i = 0; i < 2*count; i+=2) {
 330       assert(attachments[i] < __DRI_BUFFER_COUNT);
 331       assert(dri2_surf->buffer_count < 5);
 332
 333       if (dri2_surf->dri_buffers[attachments[i]] == NULL) {
 334
 335          dri2_surf->dri_buffers[attachments[i]] =
 336             dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 337                   attachments[i], attachments[i+1],
 338                   dri2_surf->base.Width, dri2_surf->base.Height);
 339
 340          if (!dri2_surf->dri_buffers[attachments[i]])
 341             continue;
 342
 343          if (attachments[i] == __DRI_BUFFER_FRONT_LEFT)
 344             dri2_process_front_buffer(dri2_surf, attachments[i+1]);
 345          else if (attachments[i] == __DRI_BUFFER_BACK_LEFT)
 346             dri2_process_back_buffer(dri2_surf, attachments[i+1]);
 347       }
 348
 349       memcpy(&dri2_surf->buffers[dri2_surf->buffer_count],
 350              dri2_surf->dri_buffers[attachments[i]],
 351              sizeof(__DRIbuffer));
 352
 353       dri2_surf->buffer_count++;
 354    }
 355
 356    assert(dri2_surf->type == DRI2_PIXMAP_SURFACE ||
 357           dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]);
 358
 359    *out_count = dri2_surf->buffer_count;
 360    if (dri2_surf->buffer_count == 0)
 361            return NULL;
 362
 363    *width = dri2_surf->base.Width;
 364    *height = dri2_surf->base.Height;
 365
 366    return dri2_surf->buffers;
 367 }
 368
 369 static __DRIbuffer *
 370 dri2_get_buffers(__DRIdrawable * driDrawable,
 371                  int *width, int *height,
 372                  unsigned int *attachments, int count,
 373                  int *out_count, void *loaderPrivate)
 374 {
 375    unsigned int *attachments_with_format;
 376    __DRIbuffer *buffer;
 377    const unsigned int format = 32;
 378    int i;
 379
 380    attachments_with_format = calloc(count * 2, sizeof(unsigned int));
 381    if (!attachments_with_format) {
 382       *out_count = 0;
 383       return NULL;
 384    }
 385
 386    for (i = 0; i < count; ++i) {
 387       attachments_with_format[2*i] = attachments[i];
 388       attachments_with_format[2*i + 1] = format;
 389    }
 390
 391    buffer =
 392       dri2_get_buffers_with_format(driDrawable,
 393                                    width, height,
 394                                    attachments_with_format, count,
 395                                    out_count, loaderPrivate);
 396
 397    free(attachments_with_format);
 398
 399    return buffer;
 400 }
 401
 402
 403 static void
 404 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 405 {
 406    (void) driDrawable;
 407
 408    /* FIXME: Does EGL support front buffer rendering at all? */
 409
 410 #if 0
 411    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 412
 413    dri2WaitGL(dri2_surf);
 414 #else
 415    (void) loaderPrivate;
 416 #endif
 417 }
 418
 419 static struct wl_buffer *
 420 wayland_create_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 421 {
 422    struct dri2_egl_display *dri2_dpy =
 423       dri2_egl_display(dri2_surf->base.Resource.Display);
 424
 425    return wl_drm_create_buffer(dri2_dpy->wl_drm, buffer->name,
 426                                dri2_surf->base.Width, dri2_surf->base.Height,
 427                                buffer->pitch, dri2_surf->wl_win->visual);
 428 }
 429
 430 static void
 431 wayland_frame_callback(struct wl_surface *surface, void *data, uint32_t time)
 432 {
 433    struct dri2_egl_surface *dri2_surf = data;
 434
 435    dri2_surf->block_swap_buffers = EGL_FALSE;
 436 }
 437
 438 static inline void
 439 pointer_swap(const void **p1, const void **p2)
 440 {
 441    const void *tmp = *p1;
 442    *p1 = *p2;
 443    *p2 = tmp;
 444 }
 445
 446 /**
 447  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 448  */
 449 static EGLBoolean
 450 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 451 {
 452    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 453    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 454    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 455
 456    while (dri2_surf->block_swap_buffers)
 457       wl_display_iterate(dri2_dpy->wl_dpy, WL_DISPLAY_READABLE);
 458
 459    dri2_surf->block_swap_buffers = EGL_TRUE;
 460    wl_display_frame_callback(dri2_dpy->wl_dpy,
 461                              dri2_surf->wl_win->surface,
 462                              wayland_frame_callback, dri2_surf);
 463
 464    if (dri2_surf->type == DRI2_WINDOW_SURFACE) {
 465       pointer_swap(
 466             (const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT],
 467             (const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]);
 468
 469       dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT]->attachment =
 470          __DRI_BUFFER_FRONT_LEFT;
 471       dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]->attachment =
 472          __DRI_BUFFER_BACK_LEFT;
 473
 474       pointer_swap((const void **) &dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT],
 475                    (const void **) &dri2_surf->wl_drm_buffer[WL_BUFFER_BACK]);
 476
 477       if (!dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT])
 478          dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT] =
 479             wayland_create_buffer(dri2_surf,
 480                   dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT]);
 481
 482       wl_surface_attach(dri2_surf->wl_win->surface,
 483             dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT],
 484             dri2_surf->dx, dri2_surf->dy);
 485
 486       dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 487       dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 488       /* reset resize growing parameters */
 489       dri2_surf->dx = 0;
 490       dri2_surf->dy = 0;
 491
 492       wl_surface_damage(dri2_surf->wl_win->surface, 0, 0,
 493             dri2_surf->base.Width, dri2_surf->base.Height);
 494    }
 495
 496    _EGLContext *ctx;
 497    if (dri2_drv->glFlush) {
 498       ctx = _eglGetCurrentContext();
 499       if (ctx && ctx->DrawSurface == &dri2_surf->base)
 500          dri2_drv->glFlush();
 501    }
 502
 503    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 504    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 505
 506    return EGL_TRUE;
 507 }
 508
 509 /**
 510  * Called via eglCreateImageKHR(), drv->API.CreateImageKHR().
 511  */
 512 static _EGLImage *
 513 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 514                              EGLClientBuffer buffer, const EGLint *attr_list)
 515 {
 516    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 517    struct wl_egl_pixmap *wl_egl_pixmap = (struct wl_egl_pixmap *) buffer;
 518    struct dri2_egl_buffer *dri2_buf;
 519    EGLint wl_attr_list[] = {
 520                 EGL_WIDTH,              0,
 521                 EGL_HEIGHT,             0,
 522                 EGL_DRM_BUFFER_STRIDE_MESA,     0,
 523                 EGL_DRM_BUFFER_FORMAT_MESA,     EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
 524                 EGL_NONE
 525    };
 526
 527    dri2_buf = malloc(sizeof *dri2_buf);
 528    if (!dri2_buf)
 529            return NULL;
 530
 531    dri2_buf->dri2_dpy = dri2_dpy;
 532    dri2_buf->dri_buffer =
 533       dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 534                                      __DRI_BUFFER_FRONT_LEFT, 32,
 535                                      wl_egl_pixmap->width,
 536                                      wl_egl_pixmap->height);
 537
 538    wl_egl_pixmap->destroy = dri2_wl_egl_pixmap_destroy;
 539    wl_egl_pixmap->driver_private = dri2_buf;
 540
 541    wl_egl_pixmap->buffer =
 542       wl_drm_create_buffer(dri2_dpy->wl_drm,
 543                            dri2_buf->dri_buffer->name,
 544                            wl_egl_pixmap->width,
 545                            wl_egl_pixmap->height,
 546                            dri2_buf->dri_buffer->pitch,
 547                            wl_egl_pixmap->visual);
 548
 549    wl_attr_list[1] = wl_egl_pixmap->width;
 550    wl_attr_list[3] = wl_egl_pixmap->height;
 551    wl_attr_list[5] = dri2_buf->dri_buffer->pitch / 4;
 552
 553    return dri2_create_image_khr(disp->Driver, disp, ctx, EGL_DRM_BUFFER_MESA,
 554         (EGLClientBuffer)(intptr_t) dri2_buf->dri_buffer->name, wl_attr_list);
 555 }
 556
 557 static _EGLImage *
 558 dri2_wayland_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 559                               _EGLContext *ctx, EGLenum target,
 560                               EGLClientBuffer buffer, const EGLint *attr_list)
 561 {
 562    (void) drv;
 563
 564    switch (target) {
 565    case EGL_NATIVE_PIXMAP_KHR:
 566       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
 567    default:
 568       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 569    }
 570 }
 571
 572 static int
 573 dri2_wayland_authenticate(_EGLDisplay *disp, uint32_t id)
 574 {
 575    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 576    int ret = 0;
 577
 578    dri2_dpy->authenticated = false;
 579
 580    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 581    force_roundtrip(dri2_dpy->wl_dpy);
 582
 583    if (!dri2_dpy->authenticated)
 584       ret = -1;
 585
 586    /* reset authenticated */
 587    dri2_dpy->authenticated = true;
 588
 589    return ret;
 590 }
 591
 592 /**
 593  * Called via eglTerminate(), drv->API.Terminate().
 594  */
 595 static EGLBoolean
 596 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 597 {
 598    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 599
 600    _eglReleaseDisplayResources(drv, disp);
 601    _eglCleanupDisplay(disp);
 602
 603    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 604    close(dri2_dpy->fd);
 605    dlclose(dri2_dpy->driver);
 606    free(dri2_dpy->driver_name);
 607    free(dri2_dpy);
 608    disp->DriverData = NULL;
 609
 610    return EGL_TRUE;
 611 }
 612
 613 static void
 614 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 615 {
 616    struct dri2_egl_display *dri2_dpy = data;
 617    drm_magic_t magic;
 618
 619    dri2_dpy->device_name = strdup(device);
 620    if (!dri2_dpy->device_name)
 621       return;
 622
 623    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 624    if (dri2_dpy->fd == -1) {
 625       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 626               dri2_dpy->device_name, strerror(errno));
 627       return;
 628    }
 629
 630    drmGetMagic(dri2_dpy->fd, &magic);
 631    wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 632 }
 633
 634 static void
 635 drm_handle_authenticated(void *data, struct wl_drm *drm)
 636 {
 637    struct dri2_egl_display *dri2_dpy = data;
 638
 639    dri2_dpy->authenticated = true;
 640 }
 641
 642 static const struct wl_drm_listener drm_listener = {
 643         drm_handle_device,
 644         drm_handle_authenticated
 645 };
 646
 647 EGLBoolean
 648 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
 649 {
 650    struct dri2_egl_display *dri2_dpy;
 651    uint32_t id;
 652    int i;
 653
 654    drv->API.CreateWindowSurface = dri2_create_window_surface;
 655    drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
 656    drv->API.DestroySurface = dri2_destroy_surface;
 657    drv->API.SwapBuffers = dri2_swap_buffers;
 658    drv->API.CreateImageKHR = dri2_wayland_create_image_khr;
 659    drv->API.Terminate = dri2_terminate;
 660
 661    dri2_dpy = malloc(sizeof *dri2_dpy);
 662    if (!dri2_dpy)
 663       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 664
 665    memset(dri2_dpy, 0, sizeof *dri2_dpy);
 666
 667    disp->DriverData = (void *) dri2_dpy;
 668    dri2_dpy->wl_dpy = disp->PlatformDisplay;
 669
 670    id = wl_display_get_global(dri2_dpy->wl_dpy, "wl_drm", 1);
 671    if (id == 0)
 672       wl_display_iterate(dri2_dpy->wl_dpy, WL_DISPLAY_READABLE);
 673    id = wl_display_get_global(dri2_dpy->wl_dpy, "wl_drm", 1);
 674    if (id == 0)
 675       goto cleanup_dpy;
 676    dri2_dpy->wl_drm = wl_drm_create(dri2_dpy->wl_dpy, id, 1);
 677    if (!dri2_dpy->wl_drm)
 678       goto cleanup_dpy;
 679    wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 680    force_roundtrip(dri2_dpy->wl_dpy);
 681    if (dri2_dpy->fd == -1)
 682       goto cleanup_drm;
 683
 684    force_roundtrip(dri2_dpy->wl_dpy);
 685    if (!dri2_dpy->authenticated)
 686       goto cleanup_fd;
 687
 688    dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
 689    if (dri2_dpy->driver_name == NULL) {
 690       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
 691       goto cleanup_fd;
 692    }
 693
 694    if (!dri2_load_driver(disp))
 695       goto cleanup_driver_name;
 696
 697    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 698    dri2_dpy->dri2_loader_extension.base.version = 3;
 699    dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
 700    dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 701    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 702       dri2_get_buffers_with_format;
 703
 704    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 705    dri2_dpy->extensions[1] = &image_lookup_extension.base;
 706    dri2_dpy->extensions[2] = NULL;
 707
 708    if (!dri2_create_screen(disp))
 709       goto cleanup_driver;
 710
 711    for (i = 0; dri2_dpy->driver_configs[i]; i++)
 712       dri2_add_config(disp, dri2_dpy->driver_configs[i], i + 1, 0,
 713                       EGL_WINDOW_BIT | EGL_PIXMAP_BIT, NULL);
 714
 715
 716    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
 717
 718    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
 719    dri2_dpy->authenticate = dri2_wayland_authenticate;
 720
 721    /* we're supporting EGL 1.4 */
 722    disp->VersionMajor = 1;
 723    disp->VersionMinor = 4;
 724
 725    return EGL_TRUE;
 726
 727  cleanup_driver:
 728    dlclose(dri2_dpy->driver);
 729  cleanup_driver_name:
 730    free(dri2_dpy->driver_name);
 731  cleanup_fd:
 732    close(dri2_dpy->fd);
 733  cleanup_drm:
 734    free(dri2_dpy->device_name);
 735    wl_drm_destroy(dri2_dpy->wl_drm);
 736  cleanup_dpy:
 737    free(dri2_dpy);
 738
 739    return EGL_FALSE;
 740 }