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 enum wl_drm_format_flags {
  44    HAS_ARGB8888 = 1,
  45    HAS_XRGB8888 = 2
  46 };
  47
  48 static void
  49 sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
  50 {
  51    int *done = data;
  52
  53    *done = 1;
  54    wl_callback_destroy(callback);
  55 }
  56
  57 static const struct wl_callback_listener sync_listener = {
  58    sync_callback
  59 };
  60
  61 static int
  62 roundtrip(struct dri2_egl_display *dri2_dpy)
  63 {
  64    struct wl_callback *callback;
  65    int done = 0, ret = 0;
  66
  67    callback = wl_display_sync(dri2_dpy->wl_dpy);
  68    wl_callback_add_listener(callback, &sync_listener, &done);
  69    wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
  70    while (ret != -1 && !done)
  71       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
  72
  73    return ret;
  74 }
  75
  76 static void
  77 wl_buffer_release(void *data, struct wl_buffer *buffer)
  78 {
  79    struct dri2_egl_surface *dri2_surf = data;
  80    int i;
  81
  82    for (i = 0; i < WL_BUFFER_COUNT; ++i)
  83       if (dri2_surf->wl_drm_buffer[i] == buffer)
  84          break;
  85
  86    assert(i <= WL_BUFFER_COUNT);
  87
  88    /* not found? */
  89    if (i == WL_BUFFER_COUNT)
  90       return;
  91
  92    dri2_surf->wl_buffer_lock[i] = 0;
  93
  94 }
  95
  96 static struct wl_buffer_listener wl_buffer_listener = {
  97    wl_buffer_release
  98 };
  99
 100 static void
 101 resize_callback(struct wl_egl_window *wl_win, void *data)
 102 {
 103    struct dri2_egl_surface *dri2_surf = data;
 104    struct dri2_egl_display *dri2_dpy =
 105       dri2_egl_display(dri2_surf->base.Resource.Display);
 106
 107    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 108 }
 109
 110 /**
 111  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 112  */
 113 static _EGLSurface *
 114 dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 115                     _EGLConfig *conf, EGLNativeWindowType window,
 116                     const EGLint *attrib_list)
 117 {
 118    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 119    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 120    struct dri2_egl_surface *dri2_surf;
 121    int i;
 122
 123    (void) drv;
 124
 125    dri2_surf = malloc(sizeof *dri2_surf);
 126    if (!dri2_surf) {
 127       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 128       return NULL;
 129    }
 130
 131    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 132       goto cleanup_surf;
 133
 134    for (i = 0; i < WL_BUFFER_COUNT; ++i) {
 135       dri2_surf->wl_drm_buffer[i] = NULL;
 136       dri2_surf->wl_buffer_lock[i] = 0;
 137    }
 138
 139    for (i = 0; i < __DRI_BUFFER_COUNT; ++i)
 140       dri2_surf->dri_buffers[i] = NULL;
 141
 142    dri2_surf->pending_buffer = NULL;
 143    dri2_surf->third_buffer = NULL;
 144    dri2_surf->frame_callback = NULL;
 145
 146    if (conf->AlphaSize == 0)
 147       dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
 148    else
 149       dri2_surf->format = WL_DRM_FORMAT_ARGB8888;
 150
 151    switch (type) {
 152    case EGL_WINDOW_BIT:
 153       dri2_surf->wl_win = (struct wl_egl_window *) window;
 154
 155       dri2_surf->wl_win->private = dri2_surf;
 156       dri2_surf->wl_win->resize_callback = resize_callback;
 157
 158       dri2_surf->base.Width =  -1;
 159       dri2_surf->base.Height = -1;
 160       break;
 161    default:
 162       goto cleanup_surf;
 163    }
 164
 165    dri2_surf->dri_drawable =
 166       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 167                                             type == EGL_WINDOW_BIT ?
 168                                             dri2_conf->dri_double_config :
 169                                             dri2_conf->dri_single_config,
 170                                             dri2_surf);
 171    if (dri2_surf->dri_drawable == NULL) {
 172       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 173       goto cleanup_dri_drawable;
 174    }
 175
 176    return &dri2_surf->base;
 177
 178  cleanup_dri_drawable:
 179    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 180  cleanup_surf:
 181    free(dri2_surf);
 182
 183    return NULL;
 184 }
 185
 186 /**
 187  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 188  */
 189 static _EGLSurface *
 190 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 191                            _EGLConfig *conf, EGLNativeWindowType window,
 192                            const EGLint *attrib_list)
 193 {
 194    return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 195                               window, attrib_list);
 196 }
 197
 198 /**
 199  * Called via eglDestroySurface(), drv->API.DestroySurface().
 200  */
 201 static EGLBoolean
 202 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 203 {
 204    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 205    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 206    int i;
 207
 208    (void) drv;
 209
 210    if (!_eglPutSurface(surf))
 211       return EGL_TRUE;
 212
 213    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 214
 215    for (i = 0; i < WL_BUFFER_COUNT; ++i)
 216       if (dri2_surf->wl_drm_buffer[i])
 217          wl_buffer_destroy(dri2_surf->wl_drm_buffer[i]);
 218
 219    for (i = 0; i < __DRI_BUFFER_COUNT; ++i)
 220       if (dri2_surf->dri_buffers[i])
 221          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 222                                        dri2_surf->dri_buffers[i]);
 223
 224    if (dri2_surf->third_buffer) {
 225       dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 226                                     dri2_surf->third_buffer);
 227    }
 228
 229    if (dri2_surf->frame_callback)
 230       wl_callback_destroy(dri2_surf->frame_callback);
 231
 232
 233    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 234       dri2_surf->wl_win->private = NULL;
 235       dri2_surf->wl_win->resize_callback = NULL;
 236    }
 237
 238    free(surf);
 239
 240    return EGL_TRUE;
 241 }
 242
 243 static struct wl_buffer *
 244 wayland_create_buffer(struct dri2_egl_surface *dri2_surf,
 245                       __DRIbuffer *buffer)
 246 {
 247    struct dri2_egl_display *dri2_dpy =
 248       dri2_egl_display(dri2_surf->base.Resource.Display);
 249    struct wl_buffer *buf;
 250
 251    buf = wl_drm_create_buffer(dri2_dpy->wl_drm, buffer->name,
 252                               dri2_surf->base.Width, dri2_surf->base.Height,
 253                               buffer->pitch, dri2_surf->format);
 254    wl_buffer_add_listener(buf, &wl_buffer_listener, dri2_surf);
 255
 256    return buf;
 257 }
 258
 259 static void
 260 dri2_process_back_buffer(struct dri2_egl_surface *dri2_surf, unsigned format)
 261 {
 262    struct dri2_egl_display *dri2_dpy =
 263       dri2_egl_display(dri2_surf->base.Resource.Display);
 264
 265    (void) format;
 266
 267    switch (dri2_surf->base.Type) {
 268    case EGL_WINDOW_BIT:
 269       /* allocate a front buffer for our double-buffered window*/
 270       if (dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT] != NULL)
 271          break;
 272       dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT] =
 273          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 274                __DRI_BUFFER_FRONT_LEFT, format,
 275                dri2_surf->base.Width, dri2_surf->base.Height);
 276       break;
 277    default:
 278       break;
 279    }
 280 }
 281
 282 static void
 283 dri2_release_pending_buffer(void *data,
 284                             struct wl_callback *callback, uint32_t time)
 285 {
 286    struct dri2_egl_surface *dri2_surf = data;
 287    struct dri2_egl_display *dri2_dpy =
 288       dri2_egl_display(dri2_surf->base.Resource.Display);
 289
 290    /* FIXME: print internal error */
 291    if (!dri2_surf->pending_buffer)
 292       return;
 293
 294    dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 295                                  dri2_surf->pending_buffer);
 296    dri2_surf->pending_buffer = NULL;
 297
 298    wl_callback_destroy(callback);
 299 }
 300
 301 static const struct wl_callback_listener release_buffer_listener = {
 302    dri2_release_pending_buffer
 303 };
 304
 305 static void
 306 dri2_release_buffers(struct dri2_egl_surface *dri2_surf)
 307 {
 308    struct dri2_egl_display *dri2_dpy =
 309       dri2_egl_display(dri2_surf->base.Resource.Display);
 310    struct wl_callback *callback;
 311    int i;
 312
 313    if (dri2_surf->third_buffer) {
 314       dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 315                                     dri2_surf->third_buffer);
 316       dri2_surf->third_buffer = NULL;
 317    }
 318
 319    for (i = 0; i < __DRI_BUFFER_COUNT; ++i) {
 320       if (dri2_surf->dri_buffers[i]) {
 321          switch (i) {
 322          case __DRI_BUFFER_FRONT_LEFT:
 323             if (dri2_surf->pending_buffer)
 324                roundtrip(dri2_dpy);
 325             dri2_surf->pending_buffer = dri2_surf->dri_buffers[i];
 326             callback = wl_display_sync(dri2_dpy->wl_dpy);
 327             wl_callback_add_listener(callback,
 328                                      &release_buffer_listener, dri2_surf);
 329             wl_proxy_set_queue((struct wl_proxy *) callback,
 330                                dri2_dpy->wl_queue);
 331             break;
 332          default:
 333             dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 334                                           dri2_surf->dri_buffers[i]);
 335             break;
 336          }
 337          dri2_surf->dri_buffers[i] = NULL;
 338       }
 339    }
 340 }
 341
 342 static inline void
 343 pointer_swap(const void **p1, const void **p2)
 344 {
 345    const void *tmp = *p1;
 346    *p1 = *p2;
 347    *p2 = tmp;
 348 }
 349
 350 static void
 351 destroy_third_buffer(struct dri2_egl_surface *dri2_surf)
 352 {
 353    struct dri2_egl_display *dri2_dpy =
 354       dri2_egl_display(dri2_surf->base.Resource.Display);
 355
 356    if (dri2_surf->third_buffer == NULL)
 357       return;
 358
 359    dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 360                                  dri2_surf->third_buffer);
 361    dri2_surf->third_buffer = NULL;
 362
 363    if (dri2_surf->wl_drm_buffer[WL_BUFFER_THIRD])
 364       wl_buffer_destroy(dri2_surf->wl_drm_buffer[WL_BUFFER_THIRD]);
 365    dri2_surf->wl_drm_buffer[WL_BUFFER_THIRD] = NULL;
 366    dri2_surf->wl_buffer_lock[WL_BUFFER_THIRD] = 0;
 367 }
 368
 369 static void
 370 swap_wl_buffers(struct dri2_egl_surface *dri2_surf,
 371                 enum wayland_buffer_type a, enum wayland_buffer_type b)
 372 {
 373    int tmp;
 374
 375    tmp = dri2_surf->wl_buffer_lock[a];
 376    dri2_surf->wl_buffer_lock[a] = dri2_surf->wl_buffer_lock[b];
 377    dri2_surf->wl_buffer_lock[b] = tmp;
 378
 379    pointer_swap((const void **) &dri2_surf->wl_drm_buffer[a],
 380                 (const void **) &dri2_surf->wl_drm_buffer[b]);
 381 }
 382
 383 static void
 384 swap_back_and_third(struct dri2_egl_surface *dri2_surf)
 385 {
 386    if (dri2_surf->wl_buffer_lock[WL_BUFFER_THIRD])
 387       destroy_third_buffer(dri2_surf);
 388
 389    pointer_swap((const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT],
 390                 (const void **) &dri2_surf->third_buffer);
 391
 392    swap_wl_buffers(dri2_surf, WL_BUFFER_BACK, WL_BUFFER_THIRD);
 393 }
 394
 395 static void
 396 dri2_prior_buffer_creation(struct dri2_egl_surface *dri2_surf,
 397                            unsigned int type)
 398 {
 399    switch (type) {
 400    case __DRI_BUFFER_BACK_LEFT:
 401          if (dri2_surf->wl_buffer_lock[WL_BUFFER_BACK])
 402             swap_back_and_third(dri2_surf);
 403          else if (dri2_surf->third_buffer)
 404             destroy_third_buffer(dri2_surf);
 405          break;
 406    default:
 407          break;
 408
 409    }
 410 }
 411
 412 static __DRIbuffer *
 413 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 414                              int *width, int *height,
 415                              unsigned int *attachments, int count,
 416                              int *out_count, void *loaderPrivate)
 417 {
 418    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 419    struct dri2_egl_display *dri2_dpy =
 420       dri2_egl_display(dri2_surf->base.Resource.Display);
 421    int i;
 422
 423    if (dri2_surf->base.Type == EGL_WINDOW_BIT &&
 424        (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 425         dri2_surf->base.Height != dri2_surf->wl_win->height)) {
 426
 427       dri2_release_buffers(dri2_surf);
 428
 429       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 430       dri2_surf->base.Height = dri2_surf->wl_win->height;
 431       dri2_surf->dx = dri2_surf->wl_win->dx;
 432       dri2_surf->dy = dri2_surf->wl_win->dy;
 433
 434       for (i = 0; i < WL_BUFFER_COUNT; ++i) {
 435          if (dri2_surf->wl_drm_buffer[i])
 436             wl_buffer_destroy(dri2_surf->wl_drm_buffer[i]);
 437          dri2_surf->wl_drm_buffer[i]  = NULL;
 438          dri2_surf->wl_buffer_lock[i] = 0;
 439       }
 440    }
 441
 442    dri2_surf->buffer_count = 0;
 443    for (i = 0; i < 2*count; i+=2) {
 444       assert(attachments[i] < __DRI_BUFFER_COUNT);
 445       assert(dri2_surf->buffer_count < 5);
 446
 447       dri2_prior_buffer_creation(dri2_surf, attachments[i]);
 448
 449       if (dri2_surf->dri_buffers[attachments[i]] == NULL) {
 450
 451          dri2_surf->dri_buffers[attachments[i]] =
 452             dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 453                   attachments[i], attachments[i+1],
 454                   dri2_surf->base.Width, dri2_surf->base.Height);
 455
 456          if (!dri2_surf->dri_buffers[attachments[i]])
 457             continue;
 458
 459          if (attachments[i] == __DRI_BUFFER_BACK_LEFT)
 460             dri2_process_back_buffer(dri2_surf, attachments[i+1]);
 461       }
 462
 463       memcpy(&dri2_surf->buffers[dri2_surf->buffer_count],
 464              dri2_surf->dri_buffers[attachments[i]],
 465              sizeof(__DRIbuffer));
 466
 467       dri2_surf->buffer_count++;
 468    }
 469
 470    assert(dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]);
 471
 472    *out_count = dri2_surf->buffer_count;
 473    if (dri2_surf->buffer_count == 0)
 474            return NULL;
 475
 476    *width = dri2_surf->base.Width;
 477    *height = dri2_surf->base.Height;
 478
 479    return dri2_surf->buffers;
 480 }
 481
 482 static __DRIbuffer *
 483 dri2_get_buffers(__DRIdrawable * driDrawable,
 484                  int *width, int *height,
 485                  unsigned int *attachments, int count,
 486                  int *out_count, void *loaderPrivate)
 487 {
 488    unsigned int *attachments_with_format;
 489    __DRIbuffer *buffer;
 490    const unsigned int format = 32;
 491    int i;
 492
 493    attachments_with_format = calloc(count * 2, sizeof(unsigned int));
 494    if (!attachments_with_format) {
 495       *out_count = 0;
 496       return NULL;
 497    }
 498
 499    for (i = 0; i < count; ++i) {
 500       attachments_with_format[2*i] = attachments[i];
 501       attachments_with_format[2*i + 1] = format;
 502    }
 503
 504    buffer =
 505       dri2_get_buffers_with_format(driDrawable,
 506                                    width, height,
 507                                    attachments_with_format, count,
 508                                    out_count, loaderPrivate);
 509
 510    free(attachments_with_format);
 511
 512    return buffer;
 513 }
 514
 515
 516 static void
 517 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 518 {
 519    (void) driDrawable;
 520
 521    /* FIXME: Does EGL support front buffer rendering at all? */
 522
 523 #if 0
 524    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 525
 526    dri2WaitGL(dri2_surf);
 527 #else
 528    (void) loaderPrivate;
 529 #endif
 530 }
 531
 532 static void
 533 wayland_frame_callback(void *data, struct wl_callback *callback, uint32_t time)
 534 {
 535    struct dri2_egl_surface *dri2_surf = data;
 536
 537    dri2_surf->frame_callback = NULL;
 538    wl_callback_destroy(callback);
 539 }
 540
 541 static const struct wl_callback_listener frame_listener = {
 542         wayland_frame_callback
 543 };
 544
 545 /**
 546  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 547  */
 548 static EGLBoolean
 549 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 550 {
 551    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 552    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 553    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 554    int ret = 0;
 555
 556    while (dri2_surf->frame_callback && ret != -1)
 557       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 558    if (ret < 0)
 559       return EGL_FALSE;
 560
 561    dri2_surf->frame_callback = wl_surface_frame(dri2_surf->wl_win->surface);
 562    wl_callback_add_listener(dri2_surf->frame_callback,
 563                             &frame_listener, dri2_surf);
 564    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->frame_callback,
 565                       dri2_dpy->wl_queue);
 566
 567    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 568       pointer_swap(
 569             (const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT],
 570             (const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]);
 571
 572       dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT]->attachment =
 573          __DRI_BUFFER_FRONT_LEFT;
 574       dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]->attachment =
 575          __DRI_BUFFER_BACK_LEFT;
 576
 577       swap_wl_buffers(dri2_surf, WL_BUFFER_FRONT, WL_BUFFER_BACK);
 578
 579       if (!dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT])
 580          dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT] =
 581             wayland_create_buffer(dri2_surf,
 582                   dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT]);
 583
 584       wl_surface_attach(dri2_surf->wl_win->surface,
 585             dri2_surf->wl_drm_buffer[WL_BUFFER_FRONT],
 586             dri2_surf->dx, dri2_surf->dy);
 587       dri2_surf->wl_buffer_lock[WL_BUFFER_FRONT] = 1;
 588
 589       dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 590       dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 591       /* reset resize growing parameters */
 592       dri2_surf->dx = 0;
 593       dri2_surf->dy = 0;
 594
 595       wl_surface_damage(dri2_surf->wl_win->surface, 0, 0,
 596             dri2_surf->base.Width, dri2_surf->base.Height);
 597
 598       wl_surface_commit(dri2_surf->wl_win->surface);
 599    }
 600
 601    _EGLContext *ctx;
 602    if (dri2_drv->glFlush) {
 603       ctx = _eglGetCurrentContext();
 604       if (ctx && ctx->DrawSurface == &dri2_surf->base)
 605          dri2_drv->glFlush();
 606    }
 607
 608    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 609
 610    return EGL_TRUE;
 611 }
 612
 613 static int
 614 dri2_wayland_authenticate(_EGLDisplay *disp, uint32_t id)
 615 {
 616    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 617    int ret = 0;
 618
 619    dri2_dpy->authenticated = 0;
 620
 621    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 622    if (roundtrip(dri2_dpy) < 0)
 623       ret = -1;
 624
 625    if (!dri2_dpy->authenticated)
 626       ret = -1;
 627
 628    /* reset authenticated */
 629    dri2_dpy->authenticated = 1;
 630
 631    return ret;
 632 }
 633
 634 /**
 635  * Called via eglTerminate(), drv->API.Terminate().
 636  */
 637 static EGLBoolean
 638 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 639 {
 640    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 641
 642    _eglReleaseDisplayResources(drv, disp);
 643    _eglCleanupDisplay(disp);
 644
 645    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 646    close(dri2_dpy->fd);
 647    dlclose(dri2_dpy->driver);
 648    free(dri2_dpy->driver_name);
 649    free(dri2_dpy->device_name);
 650    wl_drm_destroy(dri2_dpy->wl_drm);
 651    if (dri2_dpy->own_device)
 652       wl_display_disconnect(dri2_dpy->wl_dpy);
 653    free(dri2_dpy);
 654    disp->DriverData = NULL;
 655
 656    return EGL_TRUE;
 657 }
 658
 659 static void
 660 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 661 {
 662    struct dri2_egl_display *dri2_dpy = data;
 663    drm_magic_t magic;
 664
 665    dri2_dpy->device_name = strdup(device);
 666    if (!dri2_dpy->device_name)
 667       return;
 668
 669 #ifdef O_CLOEXEC
 670    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 671    if (dri2_dpy->fd == -1 && errno == EINVAL)
 672 #endif
 673    {
 674       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 675       if (dri2_dpy->fd != -1)
 676          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 677             FD_CLOEXEC);
 678    }
 679    if (dri2_dpy->fd == -1) {
 680       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 681               dri2_dpy->device_name, strerror(errno));
 682       return;
 683    }
 684
 685    drmGetMagic(dri2_dpy->fd, &magic);
 686    wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 687 }
 688
 689 static void
 690 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 691 {
 692    struct dri2_egl_display *dri2_dpy = data;
 693
 694    switch (format) {
 695    case WL_DRM_FORMAT_ARGB8888:
 696       dri2_dpy->formats |= HAS_ARGB8888;
 697       break;
 698    case WL_DRM_FORMAT_XRGB8888:
 699       dri2_dpy->formats |= HAS_XRGB8888;
 700       break;
 701    }
 702 }
 703
 704 static void
 705 drm_handle_authenticated(void *data, struct wl_drm *drm)
 706 {
 707    struct dri2_egl_display *dri2_dpy = data;
 708
 709    dri2_dpy->authenticated = 1;
 710 }
 711
 712 static const struct wl_drm_listener drm_listener = {
 713         drm_handle_device,
 714         drm_handle_format,
 715         drm_handle_authenticated
 716 };
 717
 718 static void
 719 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 720                        const char *interface, uint32_t version)
 721 {
 722    struct dri2_egl_display *dri2_dpy = data;
 723
 724    if (strcmp(interface, "wl_drm") == 0) {
 725       dri2_dpy->wl_drm =
 726          wl_registry_bind(registry, name, &wl_drm_interface, 1);
 727       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 728    }
 729 }
 730
 731 static const struct wl_registry_listener registry_listener = {
 732         registry_handle_global
 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
 746    drv->API.CreateWindowSurface = dri2_create_window_surface;
 747    drv->API.DestroySurface = dri2_destroy_surface;
 748    drv->API.SwapBuffers = dri2_swap_buffers;
 749    drv->API.Terminate = dri2_terminate;
 750
 751    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 752    if (!dri2_dpy)
 753       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 754
 755    disp->DriverData = (void *) dri2_dpy;
 756    if (disp->PlatformDisplay == NULL) {
 757       dri2_dpy->wl_dpy = wl_display_connect(NULL);
 758       if (dri2_dpy->wl_dpy == NULL)
 759          goto cleanup_dpy;
 760       dri2_dpy->own_device = 1;
 761    } else {
 762       dri2_dpy->wl_dpy = disp->PlatformDisplay;
 763    }
 764
 765    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 766    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
 767    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
 768                       dri2_dpy->wl_queue);
 769    wl_registry_add_listener(dri2_dpy->wl_registry,
 770                             &registry_listener, dri2_dpy);
 771    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
 772       goto cleanup_dpy;
 773
 774    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
 775       goto cleanup_drm;
 776
 777    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
 778       goto cleanup_fd;
 779
 780    dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
 781    if (dri2_dpy->driver_name == NULL) {
 782       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
 783       goto cleanup_fd;
 784    }
 785
 786    if (!dri2_load_driver(disp))
 787       goto cleanup_driver_name;
 788
 789    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 790    dri2_dpy->dri2_loader_extension.base.version = 3;
 791    dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
 792    dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 793    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 794       dri2_get_buffers_with_format;
 795
 796    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 797    dri2_dpy->extensions[1] = &image_lookup_extension.base;
 798    dri2_dpy->extensions[2] = &use_invalidate.base;
 799    dri2_dpy->extensions[3] = NULL;
 800
 801    if (!dri2_create_screen(disp))
 802       goto cleanup_driver;
 803
 804    types = EGL_WINDOW_BIT;
 805    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
 806       config = dri2_dpy->driver_configs[i];
 807       if (dri2_dpy->formats & HAS_XRGB8888)
 808          dri2_add_config(disp, config, i + 1, 0, types, NULL, rgb_masks);
 809       if (dri2_dpy->formats & HAS_ARGB8888)
 810          dri2_add_config(disp, config, i + 1, 0, types, NULL, argb_masks);
 811    }
 812
 813    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
 814    dri2_dpy->authenticate = dri2_wayland_authenticate;
 815
 816    /* we're supporting EGL 1.4 */
 817    disp->VersionMajor = 1;
 818    disp->VersionMinor = 4;
 819
 820    return EGL_TRUE;
 821
 822  cleanup_driver:
 823    dlclose(dri2_dpy->driver);
 824  cleanup_driver_name:
 825    free(dri2_dpy->driver_name);
 826  cleanup_fd:
 827    close(dri2_dpy->fd);
 828  cleanup_drm:
 829    free(dri2_dpy->device_name);
 830    wl_drm_destroy(dri2_dpy->wl_drm);
 831  cleanup_dpy:
 832    free(dri2_dpy);
 833
 834    return EGL_FALSE;
 835 }