src/egl/drivers/dri2/platform_x11.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  */
  27
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <stdio.h>
  31 #include <limits.h>
  32 #include <dlfcn.h>
  33 #include <fcntl.h>
  34 #include <errno.h>
  35 #include <unistd.h>
  36 #include <xf86drm.h>
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39
  40 #include "egl_dri2.h"
  41
  42 static void
  43 swrastCreateDrawable(struct dri2_egl_display * dri2_dpy,
  44                      struct dri2_egl_surface * dri2_surf,
  45                      int depth)
  46 {
  47    uint32_t           mask;
  48    const uint32_t     function = GXcopy;
  49    uint32_t           valgc[2];
  50
  51    /* create GC's */
  52    dri2_surf->gc = xcb_generate_id(dri2_dpy->conn);
  53    mask = XCB_GC_FUNCTION;
  54    xcb_create_gc(dri2_dpy->conn, dri2_surf->gc, dri2_surf->drawable, mask, &function);
  55
  56    dri2_surf->swapgc = xcb_generate_id(dri2_dpy->conn);
  57    mask = XCB_GC_FUNCTION | XCB_GC_GRAPHICS_EXPOSURES;
  58    valgc[0] = function;
  59    valgc[1] = False;
  60    xcb_create_gc(dri2_dpy->conn, dri2_surf->swapgc, dri2_surf->drawable, mask, valgc);
  61    dri2_surf->depth = depth;
  62    switch (depth) {
  63       case 32:
  64       case 24:
  65          dri2_surf->bytes_per_pixel = 4;
  66          break;
  67       case 16:
  68          dri2_surf->bytes_per_pixel = 2;
  69          break;
  70       case 8:
  71          dri2_surf->bytes_per_pixel = 1;
  72          break;
  73       case 0:
  74          dri2_surf->bytes_per_pixel = 0;
  75          break;
  76       default:
  77          _eglLog(_EGL_WARNING, "unsupported depth %d", depth);
  78    }
  79 }
  80
  81 static void
  82 swrastDestroyDrawable(struct dri2_egl_display * dri2_dpy,
  83                       struct dri2_egl_surface * dri2_surf)
  84 {
  85    xcb_free_gc(dri2_dpy->conn, dri2_surf->gc);
  86    xcb_free_gc(dri2_dpy->conn, dri2_surf->swapgc);
  87 }
  88
  89 static void
  90 swrastGetDrawableInfo(__DRIdrawable * draw,
  91                       int *x, int *y, int *w, int *h,
  92                       void *loaderPrivate)
  93 {
  94    struct dri2_egl_surface *dri2_surf = loaderPrivate;
  95    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
  96
  97    xcb_get_geometry_cookie_t cookie;
  98    xcb_get_geometry_reply_t *reply;
  99    xcb_generic_error_t *error;
 100
 101    *w = *h = 0;
 102    cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 103    reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 104    if (reply == NULL)
 105       return;
 106
 107    if (error != NULL) {
 108       _eglLog(_EGL_WARNING, "error in xcb_get_geometry");
 109       free(error);
 110    } else {
 111       *w = reply->width;
 112       *h = reply->height;
 113    }
 114    free(reply);
 115 }
 116
 117 static void
 118 swrastPutImage(__DRIdrawable * draw, int op,
 119                int x, int y, int w, int h,
 120                char *data, void *loaderPrivate)
 121 {
 122    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 123    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 124
 125    xcb_gcontext_t gc;
 126
 127    switch (op) {
 128    case __DRI_SWRAST_IMAGE_OP_DRAW:
 129       gc = dri2_surf->gc;
 130       break;
 131    case __DRI_SWRAST_IMAGE_OP_SWAP:
 132       gc = dri2_surf->swapgc;
 133       break;
 134    default:
 135       return;
 136    }
 137
 138    xcb_put_image(dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP, dri2_surf->drawable,
 139                  gc, w, h, x, y, 0, dri2_surf->depth,
 140                  w*h*dri2_surf->bytes_per_pixel, (const uint8_t *)data);
 141 }
 142
 143 static void
 144 swrastGetImage(__DRIdrawable * read,
 145                int x, int y, int w, int h,
 146                char *data, void *loaderPrivate)
 147 {
 148    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 149    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 150
 151    xcb_get_image_cookie_t cookie;
 152    xcb_get_image_reply_t *reply;
 153    xcb_generic_error_t *error;
 154
 155    cookie = xcb_get_image (dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
 156                            dri2_surf->drawable, x, y, w, h, ~0);
 157    reply = xcb_get_image_reply (dri2_dpy->conn, cookie, &error);
 158    if (reply == NULL)
 159       return;
 160
 161    if (error != NULL) {
 162       _eglLog(_EGL_WARNING, "error in xcb_get_image");
 163       free(error);
 164    } else {
 165       uint32_t bytes = xcb_get_image_data_length(reply);
 166       uint8_t *idata = xcb_get_image_data(reply);
 167       memcpy(data, idata, bytes);
 168    }
 169    free(reply);
 170 }
 171
 172
 173 /**
 174  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 175  */
 176 static _EGLSurface *
 177 dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 178                     _EGLConfig *conf, EGLNativeWindowType window,
 179                     const EGLint *attrib_list)
 180 {
 181    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 182    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 183    struct dri2_egl_surface *dri2_surf;
 184    xcb_get_geometry_cookie_t cookie;
 185    xcb_get_geometry_reply_t *reply;
 186    xcb_screen_iterator_t s;
 187    xcb_generic_error_t *error;
 188
 189    (void) drv;
 190
 191    dri2_surf = malloc(sizeof *dri2_surf);
 192    if (!dri2_surf) {
 193       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 194       return NULL;
 195    }
 196
 197    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 198       goto cleanup_surf;
 199
 200    dri2_surf->region = XCB_NONE;
 201    if (type == EGL_PBUFFER_BIT) {
 202       dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
 203       s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 204       xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
 205                         dri2_surf->drawable, s.data->root,
 206                         dri2_surf->base.Width, dri2_surf->base.Height);
 207    } else {
 208       dri2_surf->drawable = window;
 209    }
 210
 211    if (dri2_dpy->dri2) {
 212       dri2_surf->dri_drawable =
 213          (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 214                                                type == EGL_WINDOW_BIT ?
 215                                                dri2_conf->dri_double_config :
 216                                                dri2_conf->dri_single_config,
 217                                                dri2_surf);
 218    } else {
 219       assert(dri2_dpy->swrast);
 220       dri2_surf->dri_drawable =
 221          (*dri2_dpy->swrast->createNewDrawable) (dri2_dpy->dri_screen,
 222                                                  dri2_conf->dri_double_config,
 223                                                  dri2_surf);
 224    }
 225
 226    if (dri2_surf->dri_drawable == NULL) {
 227       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 228       goto cleanup_pixmap;
 229    }
 230
 231    if (dri2_dpy->dri2) {
 232       xcb_dri2_create_drawable (dri2_dpy->conn, dri2_surf->drawable);
 233    } else {
 234       swrastCreateDrawable(dri2_dpy, dri2_surf, _eglGetConfigKey(conf, EGL_BUFFER_SIZE));
 235    }
 236
 237    if (type != EGL_PBUFFER_BIT) {
 238       cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 239       reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 240       if (reply == NULL || error != NULL) {
 241          _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 242          free(error);
 243          goto cleanup_dri_drawable;
 244       }
 245
 246       dri2_surf->base.Width = reply->width;
 247       dri2_surf->base.Height = reply->height;
 248       free(reply);
 249    }
 250
 251    /* we always copy the back buffer to front */
 252    dri2_surf->base.PostSubBufferSupportedNV = EGL_TRUE;
 253
 254    return &dri2_surf->base;
 255
 256  cleanup_dri_drawable:
 257    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 258  cleanup_pixmap:
 259    if (type == EGL_PBUFFER_BIT)
 260       xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
 261  cleanup_surf:
 262    free(dri2_surf);
 263
 264    return NULL;
 265 }
 266
 267 /**
 268  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 269  */
 270 static _EGLSurface *
 271 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 272                            _EGLConfig *conf, EGLNativeWindowType window,
 273                            const EGLint *attrib_list)
 274 {
 275    return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 276                               window, attrib_list);
 277 }
 278
 279 static _EGLSurface *
 280 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 281                            _EGLConfig *conf, EGLNativePixmapType pixmap,
 282                            const EGLint *attrib_list)
 283 {
 284    return dri2_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
 285                               pixmap, attrib_list);
 286 }
 287
 288 static _EGLSurface *
 289 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 290                             _EGLConfig *conf, const EGLint *attrib_list)
 291 {
 292    return dri2_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 293                               XCB_WINDOW_NONE, attrib_list);
 294 }
 295
 296 static EGLBoolean
 297 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 298 {
 299    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 300    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 301
 302    (void) drv;
 303
 304    if (!_eglPutSurface(surf))
 305       return EGL_TRUE;
 306
 307    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 308
 309    if (dri2_dpy->dri2) {
 310       xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
 311    } else {
 312       assert(dri2_dpy->swrast);
 313       swrastDestroyDrawable(dri2_dpy, dri2_surf);
 314    }
 315
 316    if (surf->Type == EGL_PBUFFER_BIT)
 317       xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
 318
 319    free(surf);
 320
 321    return EGL_TRUE;
 322 }
 323
 324 /**
 325  * Process list of buffer received from the server
 326  *
 327  * Processes the list of buffers received in a reply from the server to either
 328  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 329  */
 330 static void
 331 dri2_process_buffers(struct dri2_egl_surface *dri2_surf,
 332                      xcb_dri2_dri2_buffer_t *buffers, unsigned count)
 333 {
 334    struct dri2_egl_display *dri2_dpy =
 335       dri2_egl_display(dri2_surf->base.Resource.Display);
 336    xcb_rectangle_t rectangle;
 337    unsigned i;
 338
 339    dri2_surf->buffer_count = count;
 340    dri2_surf->have_fake_front = 0;
 341
 342    /* This assumes the DRI2 buffer attachment tokens matches the
 343     * __DRIbuffer tokens. */
 344    for (i = 0; i < count; i++) {
 345       dri2_surf->buffers[i].attachment = buffers[i].attachment;
 346       dri2_surf->buffers[i].name = buffers[i].name;
 347       dri2_surf->buffers[i].pitch = buffers[i].pitch;
 348       dri2_surf->buffers[i].cpp = buffers[i].cpp;
 349       dri2_surf->buffers[i].flags = buffers[i].flags;
 350
 351       /* We only use the DRI drivers single buffer configs.  This
 352        * means that if we try to render to a window, DRI2 will give us
 353        * the fake front buffer, which we'll use as a back buffer.
 354        * Note that EGL doesn't require that several clients rendering
 355        * to the same window must see the same aux buffers. */
 356       if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 357          dri2_surf->have_fake_front = 1;
 358    }
 359
 360    if (dri2_surf->region != XCB_NONE)
 361       xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
 362
 363    rectangle.x = 0;
 364    rectangle.y = 0;
 365    rectangle.width = dri2_surf->base.Width;
 366    rectangle.height = dri2_surf->base.Height;
 367    dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
 368    xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
 369 }
 370
 371 static __DRIbuffer *
 372 dri2_get_buffers(__DRIdrawable * driDrawable,
 373                 int *width, int *height,
 374                 unsigned int *attachments, int count,
 375                 int *out_count, void *loaderPrivate)
 376 {
 377    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 378    struct dri2_egl_display *dri2_dpy =
 379       dri2_egl_display(dri2_surf->base.Resource.Display);
 380    xcb_dri2_dri2_buffer_t *buffers;
 381    xcb_dri2_get_buffers_reply_t *reply;
 382    xcb_dri2_get_buffers_cookie_t cookie;
 383
 384    (void) driDrawable;
 385
 386    cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 387                                             dri2_surf->drawable,
 388                                             count, count, attachments);
 389    reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
 390    buffers = xcb_dri2_get_buffers_buffers (reply);
 391    if (buffers == NULL)
 392       return NULL;
 393
 394    *out_count = reply->count;
 395    dri2_surf->base.Width = *width = reply->width;
 396    dri2_surf->base.Height = *height = reply->height;
 397    dri2_process_buffers(dri2_surf, buffers, *out_count);
 398
 399    free(reply);
 400
 401    return dri2_surf->buffers;
 402 }
 403
 404 static __DRIbuffer *
 405 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 406                              int *width, int *height,
 407                              unsigned int *attachments, int count,
 408                              int *out_count, void *loaderPrivate)
 409 {
 410    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 411    struct dri2_egl_display *dri2_dpy =
 412       dri2_egl_display(dri2_surf->base.Resource.Display);
 413    xcb_dri2_dri2_buffer_t *buffers;
 414    xcb_dri2_get_buffers_with_format_reply_t *reply;
 415    xcb_dri2_get_buffers_with_format_cookie_t cookie;
 416    xcb_dri2_attach_format_t *format_attachments;
 417
 418    (void) driDrawable;
 419
 420    format_attachments = (xcb_dri2_attach_format_t *) attachments;
 421    cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
 422                                                         dri2_surf->drawable,
 423                                                         count, count,
 424                                                         format_attachments);
 425
 426    reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
 427                                                    cookie, NULL);
 428    if (reply == NULL)
 429       return NULL;
 430
 431    buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
 432    dri2_surf->base.Width = *width = reply->width;
 433    dri2_surf->base.Height = *height = reply->height;
 434    *out_count = reply->count;
 435    dri2_process_buffers(dri2_surf, buffers, *out_count);
 436
 437    free(reply);
 438
 439    return dri2_surf->buffers;
 440 }
 441
 442 static void
 443 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 444 {
 445    (void) driDrawable;
 446
 447    /* FIXME: Does EGL support front buffer rendering at all? */
 448
 449 #if 0
 450    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 451
 452    dri2WaitGL(dri2_surf);
 453 #else
 454    (void) loaderPrivate;
 455 #endif
 456 }
 457
 458 static char *
 459 dri2_strndup(const char *s, int length)
 460 {
 461    char *d;
 462
 463    d = malloc(length + 1);
 464    if (d == NULL)
 465       return NULL;
 466
 467    memcpy(d, s, length);
 468    d[length] = '\0';
 469
 470    return d;
 471 }
 472
 473 static EGLBoolean
 474 dri2_connect(struct dri2_egl_display *dri2_dpy)
 475 {
 476    xcb_xfixes_query_version_reply_t *xfixes_query;
 477    xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
 478    xcb_dri2_query_version_reply_t *dri2_query;
 479    xcb_dri2_query_version_cookie_t dri2_query_cookie;
 480    xcb_dri2_connect_reply_t *connect;
 481    xcb_dri2_connect_cookie_t connect_cookie;
 482    xcb_generic_error_t *error;
 483    xcb_screen_iterator_t s;
 484    char *driver_name, *device_name;
 485    const xcb_query_extension_reply_t *extension;
 486
 487    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
 488    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
 489
 490    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_xfixes_id);
 491    if (!(extension && extension->present))
 492       return EGL_FALSE;
 493
 494    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_dri2_id);
 495    if (!(extension && extension->present))
 496       return EGL_FALSE;
 497
 498    xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
 499                                                   XCB_XFIXES_MAJOR_VERSION,
 500                                                   XCB_XFIXES_MINOR_VERSION);
 501
 502    dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
 503                                                XCB_DRI2_MAJOR_VERSION,
 504                                                XCB_DRI2_MINOR_VERSION);
 505
 506    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 507    connect_cookie = xcb_dri2_connect_unchecked (dri2_dpy->conn,
 508                                                 s.data->root,
 509                                                 XCB_DRI2_DRIVER_TYPE_DRI);
 510
 511    xfixes_query =
 512       xcb_xfixes_query_version_reply (dri2_dpy->conn,
 513                                       xfixes_query_cookie, &error);
 514    if (xfixes_query == NULL ||
 515        error != NULL || xfixes_query->major_version < 2) {
 516       _eglLog(_EGL_WARNING, "DRI2: failed to query xfixes version");
 517       free(error);
 518       return EGL_FALSE;
 519    }
 520    free(xfixes_query);
 521
 522    dri2_query =
 523       xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
 524    if (dri2_query == NULL || error != NULL) {
 525       _eglLog(_EGL_WARNING, "DRI2: failed to query version");
 526       free(error);
 527       return EGL_FALSE;
 528    }
 529    dri2_dpy->dri2_major = dri2_query->major_version;
 530    dri2_dpy->dri2_minor = dri2_query->minor_version;
 531    free(dri2_query);
 532
 533    connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
 534    if (connect == NULL ||
 535        connect->driver_name_length + connect->device_name_length == 0) {
 536       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 537       return EGL_FALSE;
 538    }
 539
 540    driver_name = xcb_dri2_connect_driver_name (connect);
 541    dri2_dpy->driver_name =
 542       dri2_strndup(driver_name,
 543                    xcb_dri2_connect_driver_name_length (connect));
 544
 545 #if XCB_DRI2_CONNECT_DEVICE_NAME_BROKEN
 546    device_name = driver_name + ((connect->driver_name_length + 3) & ~3);
 547 #else
 548    device_name = xcb_dri2_connect_device_name (connect);
 549 #endif
 550
 551    dri2_dpy->device_name =
 552       dri2_strndup(device_name,
 553                    xcb_dri2_connect_device_name_length (connect));
 554
 555    if (dri2_dpy->device_name == NULL || dri2_dpy->driver_name == NULL) {
 556       free(dri2_dpy->device_name);
 557       free(dri2_dpy->driver_name);
 558       free(connect);
 559       return EGL_FALSE;
 560    }
 561    free(connect);
 562
 563    return EGL_TRUE;
 564 }
 565
 566 static int
 567 dri2_x11_authenticate(_EGLDisplay *disp, uint32_t id)
 568 {
 569    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 570    xcb_dri2_authenticate_reply_t *authenticate;
 571    xcb_dri2_authenticate_cookie_t authenticate_cookie;
 572    xcb_screen_iterator_t s;
 573    int ret = 0;
 574
 575    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 576    authenticate_cookie =
 577       xcb_dri2_authenticate_unchecked(dri2_dpy->conn, s.data->root, id);
 578    authenticate =
 579       xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
 580
 581    if (authenticate == NULL || !authenticate->authenticated)
 582       ret = -1;
 583
 584    if (authenticate)
 585       free(authenticate);
 586
 587    return ret;
 588 }
 589
 590 static EGLBoolean
 591 dri2_authenticate(_EGLDisplay *disp)
 592 {
 593    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 594    drm_magic_t magic;
 595
 596    if (drmGetMagic(dri2_dpy->fd, &magic)) {
 597       _eglLog(_EGL_WARNING, "DRI2: failed to get drm magic");
 598       return EGL_FALSE;
 599    }
 600
 601    if (dri2_x11_authenticate(disp, magic) < 0) {
 602       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 603       return EGL_FALSE;
 604    }
 605
 606    return EGL_TRUE;
 607 }
 608
 609 static EGLBoolean
 610 dri2_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
 611                              _EGLDisplay *disp)
 612 {
 613    xcb_screen_iterator_t s;
 614    xcb_depth_iterator_t d;
 615    xcb_visualtype_t *visuals;
 616    int i, j, id;
 617    EGLint surface_type;
 618    EGLint config_attrs[] = {
 619            EGL_NATIVE_VISUAL_ID,   0,
 620            EGL_NATIVE_VISUAL_TYPE, 0,
 621            EGL_NONE
 622    };
 623
 624    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 625    d = xcb_screen_allowed_depths_iterator(s.data);
 626    id = 1;
 627
 628    surface_type =
 629       EGL_WINDOW_BIT |
 630       EGL_PIXMAP_BIT |
 631       EGL_PBUFFER_BIT |
 632       EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
 633
 634    while (d.rem > 0) {
 635       EGLBoolean class_added[6] = { 0, };
 636
 637       visuals = xcb_depth_visuals(d.data);
 638       for (i = 0; i < xcb_depth_visuals_length(d.data); i++) {
 639          if (class_added[visuals[i]._class])
 640             continue;
 641
 642          class_added[visuals[i]._class] = EGL_TRUE;
 643          for (j = 0; dri2_dpy->driver_configs[j]; j++) {
 644             config_attrs[1] = visuals[i].visual_id;
 645             config_attrs[3] = visuals[i]._class;
 646
 647             dri2_add_config(disp, dri2_dpy->driver_configs[j], id++,
 648                             d.data->depth, surface_type, config_attrs, NULL);
 649          }
 650       }
 651
 652       xcb_depth_next(&d);
 653    }
 654
 655    if (!_eglGetArraySize(disp->Configs)) {
 656       _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
 657       return EGL_FALSE;
 658    }
 659
 660    return EGL_TRUE;
 661 }
 662
 663 static EGLBoolean
 664 dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
 665                  _EGLSurface *draw, xcb_xfixes_region_t region)
 666 {
 667    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 668    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 669    enum xcb_dri2_attachment_t render_attachment;
 670    xcb_dri2_copy_region_cookie_t cookie;
 671
 672    /* No-op for a pixmap or pbuffer surface */
 673    if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
 674       return EGL_TRUE;
 675
 676 #ifdef __DRI2_FLUSH
 677    if (dri2_dpy->flush)
 678       (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 679 #endif
 680
 681    if (dri2_surf->have_fake_front)
 682       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
 683    else
 684       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
 685
 686    cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
 687                                            dri2_surf->drawable,
 688                                            region,
 689                                            XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
 690                                            render_attachment);
 691    free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
 692
 693    return EGL_TRUE;
 694 }
 695
 696 static int64_t
 697 dri2_swap_buffers_msc(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 698                       int64_t msc, int64_t divisor, int64_t remainder)
 699 {
 700 #if XCB_DRI2_MINOR_VERSION >= 3
 701    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 702    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 703    uint32_t msc_hi = msc >> 32;
 704    uint32_t msc_lo = msc & 0xffffffff;
 705    uint32_t divisor_hi = divisor >> 32;
 706    uint32_t divisor_lo = divisor & 0xffffffff;
 707    uint32_t remainder_hi = remainder >> 32;
 708    uint32_t remainder_lo = remainder & 0xffffffff;
 709    xcb_dri2_swap_buffers_cookie_t cookie;
 710    xcb_dri2_swap_buffers_reply_t *reply;
 711    int64_t swap_count = -1;
 712
 713    /* No-op for a pixmap or pbuffer surface */
 714    if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
 715       return 0;
 716
 717    if (draw->SwapBehavior == EGL_BUFFER_PRESERVED || !dri2_dpy->swap_available)
 718       return dri2_copy_region(drv, disp, draw, dri2_surf->region) ? 0 : -1;
 719
 720 #ifdef __DRI2_FLUSH
 721    if (dri2_dpy->flush)
 722       (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 723 #endif
 724
 725    cookie = xcb_dri2_swap_buffers_unchecked(dri2_dpy->conn, dri2_surf->drawable,
 726                   msc_hi, msc_lo, divisor_hi, divisor_lo, remainder_hi, remainder_lo);
 727
 728    reply = xcb_dri2_swap_buffers_reply(dri2_dpy->conn, cookie, NULL);
 729
 730    if (reply) {
 731       swap_count = (((int64_t)reply->swap_hi) << 32) | reply->swap_lo;
 732       free(reply);
 733    }
 734
 735 #if __DRI2_FLUSH_VERSION >= 3
 736    /* If the server doesn't send invalidate events */
 737    if (dri2_dpy->invalidate_available && dri2_dpy->flush &&
 738        dri2_dpy->flush->base.version >= 3 && dri2_dpy->flush->invalidate)
 739       (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 740 #endif
 741
 742    return swap_count;
 743 #else /* XCB_DRI2_MINOR_VERSION >= 3 */
 744    return dri2_copy_region(drv, disp, draw, dri2_surf->region) ? 0 : -1;
 745 #endif
 746 }
 747
 748 static void
 749 dri2_flush_if_current(_EGLDriver *drv, _EGLSurface *draw)
 750 {
 751    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 752    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 753
 754    if (dri2_drv->glFlush) {
 755       _EGLContext *ctx = _eglGetCurrentContext();
 756
 757       if (ctx && ctx->DrawSurface == &dri2_surf->base)
 758          dri2_drv->glFlush();
 759    }
 760 }
 761
 762 static EGLBoolean
 763 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 764 {
 765    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 766    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 767
 768    if (dri2_dpy->dri2) {
 769       dri2_flush_if_current(drv, draw);
 770
 771       return dri2_swap_buffers_msc(drv, disp, draw, 0, 0, 0) != -1;
 772    } else {
 773       assert(dri2_dpy->swrast);
 774
 775       dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
 776       return EGL_TRUE;
 777    }
 778 }
 779
 780 static EGLBoolean
 781 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 782                          EGLint numRects, const EGLint *rects)
 783 {
 784    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 785    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 786    EGLBoolean ret;
 787    xcb_xfixes_region_t region;
 788    xcb_rectangle_t rectangles[16];
 789    int i;
 790
 791    dri2_flush_if_current(drv, draw);
 792
 793    if (numRects > (int)ARRAY_SIZE(rectangles))
 794       return dri2_copy_region(drv, disp, draw, dri2_surf->region);
 795
 796    /* FIXME: Invert y here? */
 797    for (i = 0; i < numRects; i++) {
 798       rectangles[i].x = rects[i * 4];
 799       rectangles[i].y = rects[i * 4 + 1];
 800       rectangles[i].width = rects[i * 4 + 2];
 801       rectangles[i].height = rects[i * 4 + 3];
 802    }
 803
 804    region = xcb_generate_id(dri2_dpy->conn);
 805    xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles);
 806    ret = dri2_copy_region(drv, disp, draw, region);
 807    xcb_xfixes_destroy_region(dri2_dpy->conn, region);
 808
 809    return ret;
 810 }
 811
 812 static EGLBoolean
 813 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 814                      EGLint x, EGLint y, EGLint width, EGLint height)
 815 {
 816    const EGLint rect[4] = { x, draw->Height - y - height, width, height };
 817
 818    if (x < 0 || y < 0 || width < 0 || height < 0)
 819       _eglError(EGL_BAD_PARAMETER, "eglPostSubBufferNV");
 820
 821    return dri2_swap_buffers_region(drv, disp, draw, 1, rect);
 822 }
 823
 824 static EGLBoolean
 825 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
 826 {
 827 #if XCB_DRI2_MINOR_VERSION >= 3
 828    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 829    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 830
 831    /* XXX Check vblank_mode here? */
 832
 833    if (interval > surf->Config->MaxSwapInterval)
 834       interval = surf->Config->MaxSwapInterval;
 835    else if (interval < surf->Config->MinSwapInterval)
 836       interval = surf->Config->MinSwapInterval;
 837
 838    if (interval != surf->SwapInterval && dri2_dpy->swap_available)
 839       xcb_dri2_swap_interval(dri2_dpy->conn, dri2_surf->drawable, interval);
 840
 841    surf->SwapInterval = interval;
 842
 843    return EGL_TRUE;
 844 #else
 845    return EGL_FALSE;
 846 #endif
 847 }
 848
 849 static EGLBoolean
 850 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 851                   EGLNativePixmapType target)
 852 {
 853    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 854    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 855    xcb_gcontext_t gc;
 856
 857    (void) drv;
 858
 859    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 860
 861    gc = xcb_generate_id(dri2_dpy->conn);
 862    xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
 863    xcb_copy_area(dri2_dpy->conn,
 864                   dri2_surf->drawable,
 865                   target,
 866                   gc,
 867                   0, 0,
 868                   0, 0,
 869                   dri2_surf->base.Width,
 870                   dri2_surf->base.Height);
 871    xcb_free_gc(dri2_dpy->conn, gc);
 872
 873    return EGL_TRUE;
 874 }
 875
 876 static _EGLImage *
 877 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 878                              EGLClientBuffer buffer, const EGLint *attr_list)
 879 {
 880    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 881    struct dri2_egl_image *dri2_img;
 882    unsigned int attachments[1];
 883    xcb_drawable_t drawable;
 884    xcb_dri2_get_buffers_cookie_t buffers_cookie;
 885    xcb_dri2_get_buffers_reply_t *buffers_reply;
 886    xcb_dri2_dri2_buffer_t *buffers;
 887    xcb_get_geometry_cookie_t geometry_cookie;
 888    xcb_get_geometry_reply_t *geometry_reply;
 889    xcb_generic_error_t *error;
 890    int stride, format;
 891
 892    (void) ctx;
 893
 894    drawable = (xcb_drawable_t) (uintptr_t) buffer;
 895    xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
 896    attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
 897    buffers_cookie =
 898       xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 899                                       drawable, 1, 1, attachments);
 900    geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
 901    buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
 902                                                buffers_cookie, NULL);
 903    buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
 904    if (buffers == NULL) {
 905       return NULL;
 906    }
 907
 908    geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
 909                                             geometry_cookie, &error);
 910    if (geometry_reply == NULL || error != NULL) {
 911       _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 912       free(error);
 913       free(buffers_reply);
 914       return NULL;
 915    }
 916
 917    switch (geometry_reply->depth) {
 918    case 16:
 919       format = __DRI_IMAGE_FORMAT_RGB565;
 920       break;
 921    case 24:
 922       format = __DRI_IMAGE_FORMAT_XRGB8888;
 923       break;
 924    case 32:
 925       format = __DRI_IMAGE_FORMAT_ARGB8888;
 926       break;
 927    default:
 928       _eglError(EGL_BAD_PARAMETER,
 929                 "dri2_create_image_khr: unsupported pixmap depth");
 930       free(buffers_reply);
 931       free(geometry_reply);
 932       return NULL;
 933    }
 934
 935    dri2_img = malloc(sizeof *dri2_img);
 936    if (!dri2_img) {
 937       free(buffers_reply);
 938       free(geometry_reply);
 939       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
 940       return EGL_NO_IMAGE_KHR;
 941    }
 942
 943    if (!_eglInitImage(&dri2_img->base, disp)) {
 944       free(buffers_reply);
 945       free(geometry_reply);
 946       free(dri2_img);
 947       return EGL_NO_IMAGE_KHR;
 948    }
 949
 950    stride = buffers[0].pitch / buffers[0].cpp;
 951    dri2_img->dri_image =
 952       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
 953                                            buffers_reply->width,
 954                                            buffers_reply->height,
 955                                            format,
 956                                            buffers[0].name,
 957                                            stride,
 958                                            dri2_img);
 959
 960    free(buffers_reply);
 961    free(geometry_reply);
 962
 963    return &dri2_img->base;
 964 }
 965
 966 static _EGLImage *
 967 dri2_x11_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 968                           _EGLContext *ctx, EGLenum target,
 969                           EGLClientBuffer buffer, const EGLint *attr_list)
 970 {
 971    (void) drv;
 972
 973    switch (target) {
 974    case EGL_NATIVE_PIXMAP_KHR:
 975       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
 976    default:
 977       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 978    }
 979 }
 980
 981 static EGLBoolean
 982 dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp)
 983 {
 984    struct dri2_egl_display *dri2_dpy;
 985
 986    drv->API.CreateWindowSurface = dri2_create_window_surface;
 987    drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
 988    drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
 989    drv->API.DestroySurface = dri2_destroy_surface;
 990    drv->API.SwapBuffers = dri2_swap_buffers;
 991    drv->API.CopyBuffers = dri2_copy_buffers;
 992
 993    drv->API.SwapBuffersRegionNOK = NULL;
 994    drv->API.CreateImageKHR  = NULL;
 995    drv->API.DestroyImageKHR = NULL;
 996    drv->API.CreateDRMImageMESA = NULL;
 997    drv->API.ExportDRMImageMESA = NULL;
 998
 999    dri2_dpy = malloc(sizeof *dri2_dpy);
1000    if (!dri2_dpy)
1001       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1002
1003    memset(dri2_dpy, 0, sizeof *dri2_dpy);
1004
1005    disp->DriverData = (void *) dri2_dpy;
1006    if (disp->PlatformDisplay == NULL) {
1007       dri2_dpy->conn = xcb_connect(0, 0);
1008    } else {
1009       dri2_dpy->conn = XGetXCBConnection((Display *) disp->PlatformDisplay);
1010    }
1011
1012    if (xcb_connection_has_error(dri2_dpy->conn)) {
1013       _eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
1014       goto cleanup_dpy;
1015    }
1016
1017    if (!dri2_load_driver_swrast(disp))
1018       goto cleanup_conn;
1019
1020    dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
1021    dri2_dpy->swrast_loader_extension.base.version = __DRI_SWRAST_LOADER_VERSION;
1022    dri2_dpy->swrast_loader_extension.getDrawableInfo = swrastGetDrawableInfo;
1023    dri2_dpy->swrast_loader_extension.putImage = swrastPutImage;
1024    dri2_dpy->swrast_loader_extension.getImage = swrastGetImage;
1025
1026    dri2_dpy->extensions[0] = &dri2_dpy->swrast_loader_extension.base;
1027    dri2_dpy->extensions[1] = NULL;
1028    dri2_dpy->extensions[2] = NULL;
1029
1030    if (!dri2_create_screen(disp))
1031       goto cleanup_driver;
1032
1033    if (dri2_dpy->conn) {
1034       if (!dri2_add_configs_for_visuals(dri2_dpy, disp))
1035          goto cleanup_configs;
1036    }
1037
1038    /* we're supporting EGL 1.4 */
1039    disp->VersionMajor = 1;
1040    disp->VersionMinor = 4;
1041
1042    return EGL_TRUE;
1043
1044  cleanup_configs:
1045    _eglCleanupDisplay(disp);
1046    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1047  cleanup_driver:
1048    dlclose(dri2_dpy->driver);
1049  cleanup_conn:
1050    if (disp->PlatformDisplay == NULL)
1051       xcb_disconnect(dri2_dpy->conn);
1052  cleanup_dpy:
1053    free(dri2_dpy);
1054
1055    return EGL_FALSE;
1056 }
1057
1058
1059 static EGLBoolean
1060 dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp)
1061 {
1062    struct dri2_egl_display *dri2_dpy;
1063
1064    drv->API.CreateWindowSurface = dri2_create_window_surface;
1065    drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
1066    drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
1067    drv->API.DestroySurface = dri2_destroy_surface;
1068    drv->API.SwapBuffers = dri2_swap_buffers;
1069    drv->API.CopyBuffers = dri2_copy_buffers;
1070    drv->API.CreateImageKHR = dri2_x11_create_image_khr;
1071    drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
1072    drv->API.PostSubBufferNV = dri2_post_sub_buffer;
1073    drv->API.SwapInterval = dri2_swap_interval;
1074
1075    dri2_dpy = malloc(sizeof *dri2_dpy);
1076    if (!dri2_dpy)
1077       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1078
1079    memset(dri2_dpy, 0, sizeof *dri2_dpy);
1080
1081    disp->DriverData = (void *) dri2_dpy;
1082    if (disp->PlatformDisplay == NULL) {
1083       dri2_dpy->conn = xcb_connect(0, 0);
1084    } else {
1085       dri2_dpy->conn = XGetXCBConnection((Display *) disp->PlatformDisplay);
1086    }
1087
1088    if (xcb_connection_has_error(dri2_dpy->conn)) {
1089       _eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
1090       goto cleanup_dpy;
1091    }
1092
1093    if (dri2_dpy->conn) {
1094       if (!dri2_connect(dri2_dpy))
1095          goto cleanup_conn;
1096    }
1097
1098    if (!dri2_load_driver(disp))
1099       goto cleanup_conn;
1100
1101    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
1102    if (dri2_dpy->fd == -1) {
1103       _eglLog(_EGL_WARNING,
1104               "DRI2: could not open %s (%s)", dri2_dpy->device_name,
1105               strerror(errno));
1106       goto cleanup_driver;
1107    }
1108
1109    if (dri2_dpy->conn) {
1110       if (!dri2_authenticate(disp))
1111          goto cleanup_fd;
1112    }
1113
1114    if (dri2_dpy->dri2_minor >= 1) {
1115       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1116       dri2_dpy->dri2_loader_extension.base.version = 3;
1117       dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
1118       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
1119       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1120          dri2_get_buffers_with_format;
1121    } else {
1122       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1123       dri2_dpy->dri2_loader_extension.base.version = 2;
1124       dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
1125       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
1126       dri2_dpy->dri2_loader_extension.getBuffersWithFormat = NULL;
1127    }
1128
1129    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
1130    dri2_dpy->extensions[1] = &image_lookup_extension.base;
1131    dri2_dpy->extensions[2] = NULL;
1132
1133    dri2_dpy->swap_available = (dri2_dpy->dri2_minor >= 2);
1134    dri2_dpy->invalidate_available = (dri2_dpy->dri2_minor >= 3);
1135
1136    if (!dri2_create_screen(disp))
1137       goto cleanup_fd;
1138
1139    if (dri2_dpy->conn) {
1140       if (!dri2_add_configs_for_visuals(dri2_dpy, disp))
1141          goto cleanup_configs;
1142    }
1143
1144    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1145    disp->Extensions.NOK_swap_region = EGL_TRUE;
1146    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1147    disp->Extensions.NV_post_sub_buffer = EGL_TRUE;
1148
1149 #ifdef HAVE_WAYLAND_PLATFORM
1150    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1151 #endif
1152    dri2_dpy->authenticate = dri2_x11_authenticate;
1153
1154    /* we're supporting EGL 1.4 */
1155    disp->VersionMajor = 1;
1156    disp->VersionMinor = 4;
1157
1158    return EGL_TRUE;
1159
1160  cleanup_configs:
1161    _eglCleanupDisplay(disp);
1162    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1163  cleanup_fd:
1164    close(dri2_dpy->fd);
1165  cleanup_driver:
1166    dlclose(dri2_dpy->driver);
1167  cleanup_conn:
1168    if (disp->PlatformDisplay == NULL)
1169       xcb_disconnect(dri2_dpy->conn);
1170  cleanup_dpy:
1171    free(dri2_dpy);
1172
1173    return EGL_FALSE;
1174 }
1175
1176 EGLBoolean
1177 dri2_initialize_x11(_EGLDriver *drv, _EGLDisplay *disp)
1178 {
1179    EGLBoolean initialized = EGL_TRUE;
1180
1181    int x11_dri2_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1182
1183    if (x11_dri2_accel) {
1184       if (!dri2_initialize_x11_dri2(drv, disp)) {
1185          initialized = dri2_initialize_x11_swrast(drv, disp);
1186       }
1187    } else {
1188       initialized = dri2_initialize_x11_swrast(drv, disp);
1189    }
1190
1191    return initialized;
1192 }
1193