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