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)
 261 {
 262    struct dri2_egl_display *dri2_dpy =
 263       dri2_egl_display(dri2_surf->base.Resource.Display);
 264    int i;
 265
 266    /* There might be a buffer release already queued that wasn't processed */
 267    wl_display_dispatch_queue_pending(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 268
 269    if (dri2_surf->back == NULL) {
 270       for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 271          /* Get an unlocked buffer, preferrably one with a dri_buffer already
 272           * allocated. */
 273          if (dri2_surf->color_buffers[i].locked)
 274             continue;
 275          if (dri2_surf->back == NULL)
 276             dri2_surf->back = &dri2_surf->color_buffers[i];
 277          else if (dri2_surf->back->dri_image == NULL)
 278             dri2_surf->back = &dri2_surf->color_buffers[i];
 279       }
 280    }
 281
 282    if (dri2_surf->back == NULL)
 283       return -1;
 284    if (dri2_surf->back->dri_image == NULL) {
 285       dri2_surf->back->dri_image =
 286          dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 287                                       dri2_surf->base.Width,
 288                                       dri2_surf->base.Height,
 289                                       __DRI_IMAGE_FORMAT_ARGB8888,
 290                                       __DRI_IMAGE_USE_SHARE,
 291                                       NULL);
 292       dri2_surf->back->age = 0;
 293    }
 294    if (dri2_surf->back->dri_image == NULL)
 295       return -1;
 296
 297    dri2_surf->back->locked = 1;
 298
 299    return 0;
 300 }
 301
 302
 303 static void
 304 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 305 {
 306    struct dri2_egl_display *dri2_dpy =
 307       dri2_egl_display(dri2_surf->base.Resource.Display);
 308    __DRIimage *image;
 309    int name, pitch;
 310
 311    image = dri2_surf->back->dri_image;
 312
 313    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 314    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 315
 316    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 317    buffer->name = name;
 318    buffer->pitch = pitch;
 319    buffer->cpp = 4;
 320    buffer->flags = 0;
 321 }
 322
 323 static int
 324 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 325            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 326 {
 327    struct dri2_egl_display *dri2_dpy =
 328       dri2_egl_display(dri2_surf->base.Resource.Display);
 329    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 330
 331    if (b == NULL) {
 332       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 333                                          attachment, format,
 334                                          dri2_surf->base.Width,
 335                                          dri2_surf->base.Height);
 336       dri2_surf->dri_buffers[attachment] = b;
 337    }
 338    if (b == NULL)
 339       return -1;
 340
 341    memcpy(buffer, b, sizeof *buffer);
 342
 343    return 0;
 344 }
 345
 346 static int
 347 update_buffers(struct dri2_egl_surface *dri2_surf)
 348 {
 349    struct dri2_egl_display *dri2_dpy =
 350       dri2_egl_display(dri2_surf->base.Resource.Display);
 351    int i;
 352
 353    if (dri2_surf->base.Type == EGL_WINDOW_BIT &&
 354        (dri2_surf->base.Width != dri2_surf->wl_win->width ||
 355         dri2_surf->base.Height != dri2_surf->wl_win->height)) {
 356
 357       dri2_release_buffers(dri2_surf);
 358
 359       dri2_surf->base.Width  = dri2_surf->wl_win->width;
 360       dri2_surf->base.Height = dri2_surf->wl_win->height;
 361       dri2_surf->dx = dri2_surf->wl_win->dx;
 362       dri2_surf->dy = dri2_surf->wl_win->dy;
 363    }
 364
 365    if (get_back_bo(dri2_surf) < 0) {
 366       _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 367       return -1;
 368    }
 369
 370    /* If we have an extra unlocked buffer at this point, we had to do triple
 371     * buffering for a while, but now can go back to just double buffering.
 372     * That means we can free any unlocked buffer now. */
 373    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 374       if (!dri2_surf->color_buffers[i].locked &&
 375           dri2_surf->color_buffers[i].wl_buffer) {
 376          wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
 377          dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
 378          dri2_surf->color_buffers[i].wl_buffer = NULL;
 379          dri2_surf->color_buffers[i].dri_image = NULL;
 380       }
 381    }
 382
 383    return 0;
 384 }
 385
 386 static __DRIbuffer *
 387 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 388                              int *width, int *height,
 389                              unsigned int *attachments, int count,
 390                              int *out_count, void *loaderPrivate)
 391 {
 392    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 393    int i, j;
 394
 395    if (update_buffers(dri2_surf) < 0)
 396       return NULL;
 397
 398    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 399       switch (attachments[i]) {
 400       case __DRI_BUFFER_BACK_LEFT:
 401          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 402          break;
 403       default:
 404          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 405                         &dri2_surf->buffers[j]) < 0) {
 406             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 407             return NULL;
 408          }
 409          break;
 410       }
 411    }
 412
 413    *out_count = j;
 414    if (j == 0)
 415            return NULL;
 416
 417    *width = dri2_surf->base.Width;
 418    *height = dri2_surf->base.Height;
 419
 420    return dri2_surf->buffers;
 421 }
 422
 423 static __DRIbuffer *
 424 dri2_get_buffers(__DRIdrawable * driDrawable,
 425                  int *width, int *height,
 426                  unsigned int *attachments, int count,
 427                  int *out_count, void *loaderPrivate)
 428 {
 429    unsigned int *attachments_with_format;
 430    __DRIbuffer *buffer;
 431    const unsigned int format = 32;
 432    int i;
 433
 434    attachments_with_format = calloc(count * 2, sizeof(unsigned int));
 435    if (!attachments_with_format) {
 436       *out_count = 0;
 437       return NULL;
 438    }
 439
 440    for (i = 0; i < count; ++i) {
 441       attachments_with_format[2*i] = attachments[i];
 442       attachments_with_format[2*i + 1] = format;
 443    }
 444
 445    buffer =
 446       dri2_get_buffers_with_format(driDrawable,
 447                                    width, height,
 448                                    attachments_with_format, count,
 449                                    out_count, loaderPrivate);
 450
 451    free(attachments_with_format);
 452
 453    return buffer;
 454 }
 455
 456 static int
 457 image_get_buffers(__DRIdrawable *driDrawable,
 458                   unsigned int format,
 459                   uint32_t *stamp,
 460                   void *loaderPrivate,
 461                   uint32_t buffer_mask,
 462                   struct __DRIimageList *buffers)
 463 {
 464    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 465
 466    if (update_buffers(dri2_surf) < 0)
 467       return 0;
 468
 469    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 470    buffers->back = dri2_surf->back->dri_image;
 471
 472    return 1;
 473 }
 474
 475 static void
 476 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 477 {
 478    (void) driDrawable;
 479    (void) loaderPrivate;
 480 }
 481
 482 static const __DRIimageLoaderExtension image_loader_extension = {
 483    { __DRI_IMAGE_LOADER, 1 },
 484    image_get_buffers,
 485    dri2_flush_front_buffer
 486 };
 487
 488 static void
 489 wayland_frame_callback(void *data, struct wl_callback *callback, uint32_t time)
 490 {
 491    struct dri2_egl_surface *dri2_surf = data;
 492
 493    dri2_surf->frame_callback = NULL;
 494    wl_callback_destroy(callback);
 495 }
 496
 497 static const struct wl_callback_listener frame_listener = {
 498         wayland_frame_callback
 499 };
 500
 501 static void
 502 create_wl_buffer(struct dri2_egl_surface *dri2_surf)
 503 {
 504    struct dri2_egl_display *dri2_dpy =
 505       dri2_egl_display(dri2_surf->base.Resource.Display);
 506    int fd, stride, name;
 507
 508    if (dri2_surf->current->wl_buffer != NULL)
 509       return;
 510
 511    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 512       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 513                                   __DRI_IMAGE_ATTRIB_FD, &fd);
 514       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 515                                   __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 516
 517       dri2_surf->current->wl_buffer =
 518          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 519                                     fd,
 520                                     dri2_surf->base.Width,
 521                                     dri2_surf->base.Height,
 522                                     dri2_surf->format,
 523                                     0, stride,
 524                                     0, 0,
 525                                     0, 0);
 526       close(fd);
 527    } else {
 528       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 529                                   __DRI_IMAGE_ATTRIB_NAME, &name);
 530       dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
 531                                   __DRI_IMAGE_ATTRIB_STRIDE, &stride);
 532
 533       dri2_surf->current->wl_buffer =
 534          wl_drm_create_buffer(dri2_dpy->wl_drm,
 535                               name,
 536                               dri2_surf->base.Width,
 537                               dri2_surf->base.Height,
 538                               stride,
 539                               dri2_surf->format);
 540    }
 541
 542    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
 543                       dri2_dpy->wl_queue);
 544    wl_buffer_add_listener(dri2_surf->current->wl_buffer,
 545                           &wl_buffer_listener, dri2_surf);
 546 }
 547
 548 /**
 549  * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 550  */
 551 static EGLBoolean
 552 dri2_swap_buffers_with_damage(_EGLDriver *drv,
 553                               _EGLDisplay *disp,
 554                               _EGLSurface *draw,
 555                               const EGLint *rects,
 556                               EGLint n_rects)
 557 {
 558    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 559    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 560    struct dri2_egl_context *dri2_ctx;
 561    _EGLContext *ctx;
 562    int i, ret = 0;
 563
 564    while (dri2_surf->frame_callback && ret != -1)
 565       ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);
 566    if (ret < 0)
 567       return EGL_FALSE;
 568
 569    dri2_surf->frame_callback = wl_surface_frame(dri2_surf->wl_win->surface);
 570    wl_callback_add_listener(dri2_surf->frame_callback,
 571                             &frame_listener, dri2_surf);
 572    wl_proxy_set_queue((struct wl_proxy *) dri2_surf->frame_callback,
 573                       dri2_dpy->wl_queue);
 574
 575    for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 576       if (dri2_surf->color_buffers[i].age > 0)
 577          dri2_surf->color_buffers[i].age++;
 578
 579    /* Make sure we have a back buffer in case we're swapping without ever
 580     * rendering. */
 581    if (get_back_bo(dri2_surf) < 0) {
 582       _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 583       return EGL_FALSE;
 584    }
 585
 586    dri2_surf->back->age = 1;
 587    dri2_surf->current = dri2_surf->back;
 588    dri2_surf->back = NULL;
 589
 590    create_wl_buffer(dri2_surf);
 591
 592    wl_surface_attach(dri2_surf->wl_win->surface,
 593                      dri2_surf->current->wl_buffer,
 594                      dri2_surf->dx, dri2_surf->dy);
 595
 596    dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
 597    dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
 598    /* reset resize growing parameters */
 599    dri2_surf->dx = 0;
 600    dri2_surf->dy = 0;
 601
 602    if (n_rects == 0) {
 603       wl_surface_damage(dri2_surf->wl_win->surface,
 604                         0, 0, INT32_MAX, INT32_MAX);
 605    } else {
 606       for (i = 0; i < n_rects; i++) {
 607          const int *rect = &rects[i * 4];
 608          wl_surface_damage(dri2_surf->wl_win->surface,
 609                            rect[0],
 610                            dri2_surf->base.Height - rect[1] - rect[3],
 611                            rect[2], rect[3]);
 612       }
 613    }
 614
 615    if (dri2_dpy->flush->base.version >= 4) {
 616       ctx = _eglGetCurrentContext();
 617       dri2_ctx = dri2_egl_context(ctx);
 618       (*dri2_dpy->flush->flush_with_flags)(dri2_ctx->dri_context,
 619                                            dri2_surf->dri_drawable,
 620                                            __DRI2_FLUSH_DRAWABLE,
 621                                            __DRI2_THROTTLE_SWAPBUFFER);
 622    } else {
 623       (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 624    }
 625
 626    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 627
 628    wl_surface_commit(dri2_surf->wl_win->surface);
 629    wl_display_flush(dri2_dpy->wl_dpy);
 630
 631    return EGL_TRUE;
 632 }
 633
 634 static EGLint
 635 dri2_query_buffer_age(_EGLDriver *drv,
 636                       _EGLDisplay *disp, _EGLSurface *surface)
 637 {
 638    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 639
 640    if (get_back_bo(dri2_surf) < 0) {
 641       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 642       return 0;
 643    }
 644
 645    return dri2_surf->back->age;
 646 }
 647
 648 static EGLBoolean
 649 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 650 {
 651    return dri2_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
 652 }
 653
 654 static struct wl_buffer *
 655 dri2_create_wayland_buffer_from_image_wl(_EGLDriver *drv,
 656                                          _EGLDisplay *disp,
 657                                          _EGLImage *img)
 658 {
 659    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 660    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 661    __DRIimage *image = dri2_img->dri_image;
 662    struct wl_buffer *buffer;
 663    int width, height, format, pitch;
 664    enum wl_drm_format wl_format;
 665
 666    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);
 667
 668    switch (format) {
 669    case __DRI_IMAGE_FORMAT_ARGB8888:
 670       if (!(dri2_dpy->formats & HAS_ARGB8888))
 671          goto bad_format;
 672       wl_format = WL_DRM_FORMAT_ARGB8888;
 673       break;
 674    case __DRI_IMAGE_FORMAT_XRGB8888:
 675       if (!(dri2_dpy->formats & HAS_XRGB8888))
 676          goto bad_format;
 677       wl_format = WL_DRM_FORMAT_XRGB8888;
 678       break;
 679    default:
 680       goto bad_format;
 681    }
 682
 683    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
 684    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
 685    dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 686
 687    if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
 688       int fd;
 689
 690       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);
 691
 692       buffer =
 693          wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
 694                                     fd,
 695                                     width, height,
 696                                     wl_format,
 697                                     0, pitch,
 698                                     0, 0,
 699                                     0, 0);
 700
 701       close(fd);
 702    } else {
 703       int name;
 704
 705       dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
 706
 707       buffer =
 708          wl_drm_create_buffer(dri2_dpy->wl_drm,
 709                               name,
 710                               width, height,
 711                               pitch,
 712                               wl_format);
 713    }
 714
 715    /* The buffer object will have been created with our internal event queue
 716     * because it is using the wl_drm object as a proxy factory. We want the
 717     * buffer to be used by the application so we'll reset it to the display's
 718     * default event queue */
 719    if (buffer)
 720       wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);
 721
 722    return buffer;
 723
 724 bad_format:
 725    _eglError(EGL_BAD_MATCH, "unsupported image format");
 726    return NULL;
 727 }
 728
 729 static int
 730 dri2_wayland_authenticate(_EGLDisplay *disp, uint32_t id)
 731 {
 732    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 733    int ret = 0;
 734
 735    dri2_dpy->authenticated = 0;
 736
 737    wl_drm_authenticate(dri2_dpy->wl_drm, id);
 738    if (roundtrip(dri2_dpy) < 0)
 739       ret = -1;
 740
 741    if (!dri2_dpy->authenticated)
 742       ret = -1;
 743
 744    /* reset authenticated */
 745    dri2_dpy->authenticated = 1;
 746
 747    return ret;
 748 }
 749
 750 /**
 751  * Called via eglTerminate(), drv->API.Terminate().
 752  */
 753 static EGLBoolean
 754 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 755 {
 756    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 757
 758    _eglReleaseDisplayResources(drv, disp);
 759    _eglCleanupDisplay(disp);
 760
 761    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 762    close(dri2_dpy->fd);
 763    dlclose(dri2_dpy->driver);
 764    free(dri2_dpy->driver_name);
 765    free(dri2_dpy->device_name);
 766    wl_drm_destroy(dri2_dpy->wl_drm);
 767    if (dri2_dpy->own_device)
 768       wl_display_disconnect(dri2_dpy->wl_dpy);
 769    free(dri2_dpy);
 770    disp->DriverData = NULL;
 771
 772    return EGL_TRUE;
 773 }
 774
 775 static void
 776 drm_handle_device(void *data, struct wl_drm *drm, const char *device)
 777 {
 778    struct dri2_egl_display *dri2_dpy = data;
 779    drm_magic_t magic;
 780
 781    dri2_dpy->device_name = strdup(device);
 782    if (!dri2_dpy->device_name)
 783       return;
 784
 785 #ifdef O_CLOEXEC
 786    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 787    if (dri2_dpy->fd == -1 && errno == EINVAL)
 788 #endif
 789    {
 790       dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 791       if (dri2_dpy->fd != -1)
 792          fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
 793             FD_CLOEXEC);
 794    }
 795    if (dri2_dpy->fd == -1) {
 796       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 797               dri2_dpy->device_name, strerror(errno));
 798       return;
 799    }
 800
 801    drmGetMagic(dri2_dpy->fd, &magic);
 802    wl_drm_authenticate(dri2_dpy->wl_drm, magic);
 803 }
 804
 805 static void
 806 drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
 807 {
 808    struct dri2_egl_display *dri2_dpy = data;
 809
 810    switch (format) {
 811    case WL_DRM_FORMAT_ARGB8888:
 812       dri2_dpy->formats |= HAS_ARGB8888;
 813       break;
 814    case WL_DRM_FORMAT_XRGB8888:
 815       dri2_dpy->formats |= HAS_XRGB8888;
 816       break;
 817    case WL_DRM_FORMAT_RGB565:
 818       dri2_dpy->formats |= HAS_RGB565;
 819       break;
 820    }
 821 }
 822
 823 static void
 824 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
 825 {
 826    struct dri2_egl_display *dri2_dpy = data;
 827
 828    dri2_dpy->capabilities = value;
 829 }
 830
 831 static void
 832 drm_handle_authenticated(void *data, struct wl_drm *drm)
 833 {
 834    struct dri2_egl_display *dri2_dpy = data;
 835
 836    dri2_dpy->authenticated = 1;
 837 }
 838
 839 static const struct wl_drm_listener drm_listener = {
 840         drm_handle_device,
 841         drm_handle_format,
 842         drm_handle_authenticated,
 843         drm_handle_capabilities
 844 };
 845
 846 static void
 847 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 848                        const char *interface, uint32_t version)
 849 {
 850    struct dri2_egl_display *dri2_dpy = data;
 851
 852    if (version > 1)
 853       version = 2;
 854    if (strcmp(interface, "wl_drm") == 0) {
 855       dri2_dpy->wl_drm =
 856          wl_registry_bind(registry, name, &wl_drm_interface, version);
 857       wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
 858    }
 859 }
 860
 861 static void
 862 registry_handle_global_remove(void *data, struct wl_registry *registry,
 863                               uint32_t name)
 864 {
 865 }
 866
 867 static const struct wl_registry_listener registry_listener = {
 868    registry_handle_global,
 869    registry_handle_global_remove
 870 };
 871
 872 EGLBoolean
 873 dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
 874 {
 875    struct dri2_egl_display *dri2_dpy;
 876    const __DRIconfig *config;
 877    uint32_t types;
 878    int i;
 879    static const unsigned int argb_masks[4] =
 880       { 0xff0000, 0xff00, 0xff, 0xff000000 };
 881    static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
 882    static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };
 883
 884    drv->API.CreateWindowSurface = dri2_create_window_surface;
 885    drv->API.DestroySurface = dri2_destroy_surface;
 886    drv->API.SwapBuffers = dri2_swap_buffers;
 887    drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
 888    drv->API.Terminate = dri2_terminate;
 889    drv->API.QueryBufferAge = dri2_query_buffer_age;
 890    drv->API.CreateWaylandBufferFromImageWL =
 891       dri2_create_wayland_buffer_from_image_wl;
 892
 893    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 894    if (!dri2_dpy)
 895       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 896
 897    disp->DriverData = (void *) dri2_dpy;
 898    if (disp->PlatformDisplay == NULL) {
 899       dri2_dpy->wl_dpy = wl_display_connect(NULL);
 900       if (dri2_dpy->wl_dpy == NULL)
 901          goto cleanup_dpy;
 902       dri2_dpy->own_device = 1;
 903    } else {
 904       dri2_dpy->wl_dpy = disp->PlatformDisplay;
 905    }
 906
 907    dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);
 908
 909    if (dri2_dpy->own_device)
 910       wl_display_dispatch_pending(dri2_dpy->wl_dpy);
 911
 912    dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
 913    wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
 914                       dri2_dpy->wl_queue);
 915    wl_registry_add_listener(dri2_dpy->wl_registry,
 916                             &registry_listener, dri2_dpy);
 917    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
 918       goto cleanup_dpy;
 919
 920    if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
 921       goto cleanup_drm;
 922
 923    if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
 924       goto cleanup_fd;
 925
 926    dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
 927    if (dri2_dpy->driver_name == NULL) {
 928       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
 929       goto cleanup_fd;
 930    }
 931
 932    if (!dri2_load_driver(disp))
 933       goto cleanup_driver_name;
 934
 935    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 936    dri2_dpy->dri2_loader_extension.base.version = 3;
 937    dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
 938    dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 939    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 940       dri2_get_buffers_with_format;
 941
 942    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 943    dri2_dpy->extensions[1] = &image_loader_extension.base;
 944    dri2_dpy->extensions[2] = &image_lookup_extension.base;
 945    dri2_dpy->extensions[3] = &use_invalidate.base;
 946    dri2_dpy->extensions[4] = NULL;
 947
 948    if (!dri2_create_screen(disp))
 949       goto cleanup_driver;
 950
 951    /* The server shouldn't advertise WL_DRM_CAPABILITY_PRIME if the driver
 952     * doesn't have createImageFromFds, since we're using the same driver on
 953     * both sides.  We don't want crash if that happens anyway, so fall back to
 954     * gem names if we don't have prime support. */
 955
 956    if (dri2_dpy->image->base.version < 7 ||
 957        dri2_dpy->image->createImageFromFds == NULL)
 958       dri2_dpy->capabilities &= WL_DRM_CAPABILITY_PRIME;
 959
 960    types = EGL_WINDOW_BIT;
 961    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
 962       config = dri2_dpy->driver_configs[i];
 963       if (dri2_dpy->formats & HAS_XRGB8888)
 964          dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
 965       if (dri2_dpy->formats & HAS_ARGB8888)
 966          dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
 967       if (dri2_dpy->formats & HAS_RGB565)
 968         dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
 969    }
 970
 971    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
 972    disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
 973    disp->Extensions.EXT_buffer_age = EGL_TRUE;
 974    dri2_dpy->authenticate = dri2_wayland_authenticate;
 975
 976    disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;
 977
 978    /* we're supporting EGL 1.4 */
 979    disp->VersionMajor = 1;
 980    disp->VersionMinor = 4;
 981
 982    return EGL_TRUE;
 983
 984  cleanup_driver:
 985    dlclose(dri2_dpy->driver);
 986  cleanup_driver_name:
 987    free(dri2_dpy->driver_name);
 988  cleanup_fd:
 989    close(dri2_dpy->fd);
 990  cleanup_drm:
 991    free(dri2_dpy->device_name);
 992    wl_drm_destroy(dri2_dpy->wl_drm);
 993  cleanup_dpy:
 994    free(dri2_dpy);
 995
 996    return EGL_FALSE;
 997 }