src/egl/drivers/dri2/platform_x11_dri3.c

   1 /*
   2  * Copyright © 2015 Boyan Ding
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #include <stdbool.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27
  28 #include <xcb/xcb.h>
  29 #include <xcb/dri3.h>
  30 #include <xcb/present.h>
  31
  32 #include <xf86drm.h>
  33 #include "util/macros.h"
  34
  35 #include "egl_dri2.h"
  36 #include "egl_dri2_fallbacks.h"
  37 #include "platform_x11_dri3.h"
  38
  39 #include "loader.h"
  40 #include "loader_dri3_helper.h"
  41
  42 static struct dri3_egl_surface *
  43 loader_drawable_to_egl_surface(struct loader_dri3_drawable *draw) {
  44    size_t offset = offsetof(struct dri3_egl_surface, loader_drawable);
  45    return (struct dri3_egl_surface *)(((void*) draw) - offset);
  46 }
  47
  48 static void
  49 egl_dri3_set_drawable_size(struct loader_dri3_drawable *draw,
  50                            int width, int height)
  51 {
  52    struct dri3_egl_surface *dri3_surf = loader_drawable_to_egl_surface(draw);
  53
  54    dri3_surf->surf.base.Width = width;
  55    dri3_surf->surf.base.Height = height;
  56 }
  57
  58 static bool
  59 egl_dri3_in_current_context(struct loader_dri3_drawable *draw)
  60 {
  61    struct dri3_egl_surface *dri3_surf = loader_drawable_to_egl_surface(draw);
  62    _EGLContext *ctx = _eglGetCurrentContext();
  63
  64    return ctx->Resource.Display == dri3_surf->surf.base.Resource.Display;
  65 }
  66
  67 static __DRIcontext *
  68 egl_dri3_get_dri_context(struct loader_dri3_drawable *draw)
  69 {
  70    _EGLContext *ctx = _eglGetCurrentContext();
  71    struct dri2_egl_context *dri2_ctx;
  72    if (!ctx)
  73       return NULL;
  74    dri2_ctx = dri2_egl_context(ctx);
  75    return dri2_ctx->dri_context;
  76 }
  77
  78 static __DRIscreen *
  79 egl_dri3_get_dri_screen(void)
  80 {
  81    _EGLContext *ctx = _eglGetCurrentContext();
  82    struct dri2_egl_context *dri2_ctx;
  83    if (!ctx)
  84       return NULL;
  85    dri2_ctx = dri2_egl_context(ctx);
  86    return dri2_egl_display(dri2_ctx->base.Resource.Display)->dri_screen;
  87 }
  88
  89 static void
  90 egl_dri3_flush_drawable(struct loader_dri3_drawable *draw, unsigned flags)
  91 {
  92    struct dri3_egl_surface *dri3_surf = loader_drawable_to_egl_surface(draw);
  93    _EGLDisplay *disp = dri3_surf->surf.base.Resource.Display;
  94
  95    dri2_flush_drawable_for_swapbuffers(disp, &dri3_surf->surf.base);
  96 }
  97
  98 static const struct loader_dri3_vtable egl_dri3_vtable = {
  99    .set_drawable_size = egl_dri3_set_drawable_size,
 100    .in_current_context = egl_dri3_in_current_context,
 101    .get_dri_context = egl_dri3_get_dri_context,
 102    .get_dri_screen = egl_dri3_get_dri_screen,
 103    .flush_drawable = egl_dri3_flush_drawable,
 104    .show_fps = NULL,
 105 };
 106
 107 static EGLBoolean
 108 dri3_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 109 {
 110    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 111    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 112    xcb_drawable_t drawable = dri3_surf->loader_drawable.drawable;
 113
 114    (void) drv;
 115
 116    loader_dri3_drawable_fini(&dri3_surf->loader_drawable);
 117
 118    if (surf->Type == EGL_PBUFFER_BIT)
 119       xcb_free_pixmap (dri2_dpy->conn, drawable);
 120
 121    dri2_fini_surface(surf);
 122    free(surf);
 123
 124    return EGL_TRUE;
 125 }
 126
 127 static EGLBoolean
 128 dri3_set_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 129                        EGLint interval)
 130 {
 131    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 132
 133    dri3_surf->surf.base.SwapInterval = interval;
 134    loader_dri3_set_swap_interval(&dri3_surf->loader_drawable, interval);
 135
 136    return EGL_TRUE;
 137 }
 138
 139 static _EGLSurface *
 140 dri3_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 141                     _EGLConfig *conf, void *native_surface,
 142                     const EGLint *attrib_list)
 143 {
 144    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 145    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 146    struct dri3_egl_surface *dri3_surf;
 147    const __DRIconfig *dri_config;
 148    xcb_drawable_t drawable;
 149
 150    (void) drv;
 151
 152    dri3_surf = calloc(1, sizeof *dri3_surf);
 153    if (!dri3_surf) {
 154       _eglError(EGL_BAD_ALLOC, "dri3_create_surface");
 155       return NULL;
 156    }
 157
 158    if (!dri2_init_surface(&dri3_surf->surf.base, disp, type, conf, attrib_list, false))
 159       goto cleanup_surf;
 160
 161    if (type == EGL_PBUFFER_BIT) {
 162       drawable = xcb_generate_id(dri2_dpy->conn);
 163       xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
 164                         drawable, dri2_dpy->screen->root,
 165                         dri3_surf->surf.base.Width, dri3_surf->surf.base.Height);
 166    } else {
 167       STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_surface));
 168       drawable = (uintptr_t) native_surface;
 169    }
 170
 171    dri_config = dri2_get_dri_config(dri2_conf, type,
 172                                     dri3_surf->surf.base.GLColorspace);
 173
 174    if (!dri_config) {
 175       _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
 176       goto cleanup_pixmap;
 177    }
 178
 179    if (loader_dri3_drawable_init(dri2_dpy->conn, drawable,
 180                                  dri2_dpy->dri_screen,
 181                                  dri2_dpy->is_different_gpu,
 182                                  dri2_dpy->multibuffers_available,
 183                                  dri_config,
 184                                  &dri2_dpy->loader_dri3_ext,
 185                                  &egl_dri3_vtable,
 186                                  &dri3_surf->loader_drawable)) {
 187       _eglError(EGL_BAD_ALLOC, "dri3_surface_create");
 188       goto cleanup_pixmap;
 189    }
 190
 191    return &dri3_surf->surf.base;
 192
 193  cleanup_pixmap:
 194    if (type == EGL_PBUFFER_BIT)
 195       xcb_free_pixmap(dri2_dpy->conn, drawable);
 196  cleanup_surf:
 197    free(dri3_surf);
 198
 199    return NULL;
 200 }
 201
 202 static int
 203 dri3_authenticate(_EGLDisplay *disp, uint32_t id)
 204 {
 205 #ifdef HAVE_WAYLAND_PLATFORM
 206    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 207
 208    if (dri2_dpy->device_name) {
 209       _eglLog(_EGL_WARNING,
 210               "Wayland client render node authentication is unnecessary");
 211       return 0;
 212    }
 213
 214    _eglLog(_EGL_WARNING,
 215            "Wayland client primary node authentication isn't supported");
 216 #endif
 217
 218    return -1;
 219 }
 220
 221 /**
 222  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 223  */
 224 static _EGLSurface *
 225 dri3_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 226                            _EGLConfig *conf, void *native_window,
 227                            const EGLint *attrib_list)
 228 {
 229    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 230    _EGLSurface *surf;
 231
 232    surf = dri3_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 233                               native_window, attrib_list);
 234    if (surf != NULL)
 235       dri3_set_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 236
 237    return surf;
 238 }
 239
 240 static _EGLSurface *
 241 dri3_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 242                            _EGLConfig *conf, void *native_pixmap,
 243                            const EGLint *attrib_list)
 244 {
 245    return dri3_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
 246                               native_pixmap, attrib_list);
 247 }
 248
 249 static _EGLSurface *
 250 dri3_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 251                                 _EGLConfig *conf, const EGLint *attrib_list)
 252 {
 253    return dri3_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 254                               NULL, attrib_list);
 255 }
 256
 257 static EGLBoolean
 258 dri3_get_sync_values(_EGLDisplay *display, _EGLSurface *surface,
 259                      EGLuint64KHR *ust, EGLuint64KHR *msc,
 260                      EGLuint64KHR *sbc)
 261 {
 262    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surface);
 263
 264    return loader_dri3_wait_for_msc(&dri3_surf->loader_drawable, 0, 0, 0,
 265                                    (int64_t *) ust, (int64_t *) msc,
 266                                    (int64_t *) sbc) ? EGL_TRUE : EGL_FALSE;
 267 }
 268
 269 static _EGLImage *
 270 dri3_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 271                              EGLClientBuffer buffer, const EGLint *attr_list)
 272 {
 273    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 274    struct dri2_egl_image *dri2_img;
 275    xcb_drawable_t drawable;
 276    xcb_dri3_buffer_from_pixmap_cookie_t bp_cookie;
 277    xcb_dri3_buffer_from_pixmap_reply_t  *bp_reply;
 278    unsigned int format;
 279
 280    drawable = (xcb_drawable_t) (uintptr_t) buffer;
 281    bp_cookie = xcb_dri3_buffer_from_pixmap(dri2_dpy->conn, drawable);
 282    bp_reply = xcb_dri3_buffer_from_pixmap_reply(dri2_dpy->conn,
 283                                                 bp_cookie, NULL);
 284    if (!bp_reply) {
 285       _eglError(EGL_BAD_ALLOC, "xcb_dri3_buffer_from_pixmap");
 286       return NULL;
 287    }
 288
 289    format = dri2_format_for_depth(dri2_dpy, bp_reply->depth);
 290    if (format == __DRI_IMAGE_FORMAT_NONE) {
 291       _eglError(EGL_BAD_PARAMETER,
 292                 "dri3_create_image_khr: unsupported pixmap depth");
 293       free(bp_reply);
 294       return EGL_NO_IMAGE_KHR;
 295    }
 296
 297    dri2_img = malloc(sizeof *dri2_img);
 298    if (!dri2_img) {
 299       _eglError(EGL_BAD_ALLOC, "dri3_create_image_khr");
 300       free(bp_reply);
 301       return EGL_NO_IMAGE_KHR;
 302    }
 303
 304    _eglInitImage(&dri2_img->base, disp);
 305
 306    dri2_img->dri_image = loader_dri3_create_image(dri2_dpy->conn,
 307                                                   bp_reply,
 308                                                   format,
 309                                                   dri2_dpy->dri_screen,
 310                                                   dri2_dpy->image,
 311                                                   dri2_img);
 312
 313    free(bp_reply);
 314
 315    return &dri2_img->base;
 316 }
 317
 318 #ifdef HAVE_DRI3_MODIFIERS
 319 static _EGLImage *
 320 dri3_create_image_khr_pixmap_from_buffers(_EGLDisplay *disp, _EGLContext *ctx,
 321                                           EGLClientBuffer buffer,
 322                                           const EGLint *attr_list)
 323 {
 324    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 325    struct dri2_egl_image *dri2_img;
 326    xcb_dri3_buffers_from_pixmap_cookie_t bp_cookie;
 327    xcb_dri3_buffers_from_pixmap_reply_t  *bp_reply;
 328    xcb_drawable_t drawable;
 329    unsigned int format;
 330
 331    drawable = (xcb_drawable_t) (uintptr_t) buffer;
 332    bp_cookie = xcb_dri3_buffers_from_pixmap(dri2_dpy->conn, drawable);
 333    bp_reply = xcb_dri3_buffers_from_pixmap_reply(dri2_dpy->conn,
 334                                                  bp_cookie, NULL);
 335
 336    if (!bp_reply) {
 337       _eglError(EGL_BAD_ATTRIBUTE, "dri3_create_image_khr");
 338       return EGL_NO_IMAGE_KHR;
 339    }
 340
 341    format = dri2_format_for_depth(dri2_dpy, bp_reply->depth);
 342    if (format == __DRI_IMAGE_FORMAT_NONE) {
 343       _eglError(EGL_BAD_PARAMETER,
 344                 "dri3_create_image_khr: unsupported pixmap depth");
 345       free(bp_reply);
 346       return EGL_NO_IMAGE_KHR;
 347    }
 348
 349    dri2_img = malloc(sizeof *dri2_img);
 350    if (!dri2_img) {
 351       _eglError(EGL_BAD_ALLOC, "dri3_create_image_khr");
 352       free(bp_reply);
 353       return EGL_NO_IMAGE_KHR;
 354    }
 355
 356    _eglInitImage(&dri2_img->base, disp);
 357
 358    dri2_img->dri_image = loader_dri3_create_image_from_buffers(dri2_dpy->conn,
 359                                                                bp_reply,
 360                                                                format,
 361                                                                dri2_dpy->dri_screen,
 362                                                                dri2_dpy->image,
 363                                                                dri2_img);
 364    free(bp_reply);
 365
 366    if (!dri2_img->dri_image) {
 367       _eglError(EGL_BAD_ATTRIBUTE, "dri3_create_image_khr");
 368       free(dri2_img);
 369       return EGL_NO_IMAGE_KHR;
 370    }
 371
 372    return &dri2_img->base;
 373 }
 374 #endif
 375
 376 static _EGLImage *
 377 dri3_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 378                       _EGLContext *ctx, EGLenum target,
 379                       EGLClientBuffer buffer, const EGLint *attr_list)
 380 {
 381 #ifdef HAVE_DRI3_MODIFIERS
 382    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 383 #endif
 384
 385    switch (target) {
 386    case EGL_NATIVE_PIXMAP_KHR:
 387 #ifdef HAVE_DRI3_MODIFIERS
 388       if (dri2_dpy->multibuffers_available)
 389          return dri3_create_image_khr_pixmap_from_buffers(disp, ctx, buffer,
 390                                                           attr_list);
 391 #endif
 392       return dri3_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
 393    default:
 394       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 395    }
 396 }
 397
 398 /**
 399  * Called by the driver when it needs to update the real front buffer with the
 400  * contents of its fake front buffer.
 401  */
 402 static void
 403 dri3_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 404 {
 405    /* There does not seem to be any kind of consensus on whether we should
 406     * support front-buffer rendering or not:
 407     * http://lists.freedesktop.org/archives/mesa-dev/2013-June/040129.html
 408     */
 409    _eglLog(_EGL_WARNING, "FIXME: egl/x11 doesn't support front buffer rendering.");
 410    (void) driDrawable;
 411    (void) loaderPrivate;
 412 }
 413
 414 const __DRIimageLoaderExtension dri3_image_loader_extension = {
 415    .base = { __DRI_IMAGE_LOADER, 1 },
 416
 417    .getBuffers          = loader_dri3_get_buffers,
 418    .flushFrontBuffer    = dri3_flush_front_buffer,
 419 };
 420
 421 static EGLBoolean
 422 dri3_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 423 {
 424    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(draw);
 425
 426    return loader_dri3_swap_buffers_msc(&dri3_surf->loader_drawable,
 427                                        0, 0, 0, 0,
 428                                        draw->SwapBehavior == EGL_BUFFER_PRESERVED) != -1;
 429 }
 430
 431 static EGLBoolean
 432 dri3_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 433                   void *native_pixmap_target)
 434 {
 435    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 436    xcb_pixmap_t target;
 437
 438    STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_pixmap_target));
 439    target = (uintptr_t) native_pixmap_target;
 440
 441    loader_dri3_copy_drawable(&dri3_surf->loader_drawable, target,
 442                              dri3_surf->loader_drawable.drawable);
 443
 444    return EGL_TRUE;
 445 }
 446
 447 static int
 448 dri3_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
 449 {
 450    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 451
 452    return loader_dri3_query_buffer_age(&dri3_surf->loader_drawable);
 453 }
 454
 455 static EGLBoolean
 456 dri3_query_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 457                    _EGLSurface *surf, EGLint attribute,
 458                    EGLint *value)
 459 {
 460    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 461
 462    switch (attribute) {
 463    case EGL_WIDTH:
 464    case EGL_HEIGHT:
 465       loader_dri3_update_drawable_geometry(&dri3_surf->loader_drawable);
 466       break;
 467    default:
 468       break;
 469    }
 470
 471    return _eglQuerySurface(drv, dpy, surf, attribute, value);
 472 }
 473
 474 static __DRIdrawable *
 475 dri3_get_dri_drawable(_EGLSurface *surf)
 476 {
 477    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 478
 479    return dri3_surf->loader_drawable.dri_drawable;
 480 }
 481
 482 static void
 483 dri3_close_screen_notify(_EGLDisplay *dpy)
 484 {
 485    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
 486
 487    loader_dri3_close_screen(dri2_dpy->dri_screen);
 488 }
 489
 490 struct dri2_egl_display_vtbl dri3_x11_display_vtbl = {
 491    .authenticate = dri3_authenticate,
 492    .create_window_surface = dri3_create_window_surface,
 493    .create_pixmap_surface = dri3_create_pixmap_surface,
 494    .create_pbuffer_surface = dri3_create_pbuffer_surface,
 495    .destroy_surface = dri3_destroy_surface,
 496    .create_image = dri3_create_image_khr,
 497    .swap_interval = dri3_set_swap_interval,
 498    .swap_buffers = dri3_swap_buffers,
 499    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
 500    .swap_buffers_region = dri2_fallback_swap_buffers_region,
 501    .set_damage_region = dri2_fallback_set_damage_region,
 502    .post_sub_buffer = dri2_fallback_post_sub_buffer,
 503    .copy_buffers = dri3_copy_buffers,
 504    .query_buffer_age = dri3_query_buffer_age,
 505    .query_surface = dri3_query_surface,
 506    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
 507    .get_sync_values = dri3_get_sync_values,
 508    .get_dri_drawable = dri3_get_dri_drawable,
 509    .close_screen_notify = dri3_close_screen_notify,
 510 };
 511
 512 /* Only request versions of these protocols which we actually support. */
 513 #define DRI3_SUPPORTED_MAJOR 1
 514 #define PRESENT_SUPPORTED_MAJOR 1
 515
 516 #ifdef HAVE_DRI3_MODIFIERS
 517 #define DRI3_SUPPORTED_MINOR 2
 518 #define PRESENT_SUPPORTED_MINOR 2
 519 #else
 520 #define PRESENT_SUPPORTED_MINOR 0
 521 #define DRI3_SUPPORTED_MINOR 0
 522 #endif
 523
 524 EGLBoolean
 525 dri3_x11_connect(struct dri2_egl_display *dri2_dpy)
 526 {
 527    xcb_dri3_query_version_reply_t *dri3_query;
 528    xcb_dri3_query_version_cookie_t dri3_query_cookie;
 529    xcb_present_query_version_reply_t *present_query;
 530    xcb_present_query_version_cookie_t present_query_cookie;
 531    xcb_generic_error_t *error;
 532    const xcb_query_extension_reply_t *extension;
 533
 534    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri3_id);
 535    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_present_id);
 536
 537    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_dri3_id);
 538    if (!(extension && extension->present))
 539       return EGL_FALSE;
 540
 541    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_present_id);
 542    if (!(extension && extension->present))
 543       return EGL_FALSE;
 544
 545    dri3_query_cookie = xcb_dri3_query_version(dri2_dpy->conn,
 546                                               DRI3_SUPPORTED_MAJOR,
 547                                               DRI3_SUPPORTED_MINOR);
 548
 549    present_query_cookie = xcb_present_query_version(dri2_dpy->conn,
 550                                                     PRESENT_SUPPORTED_MAJOR,
 551                                                     PRESENT_SUPPORTED_MINOR);
 552
 553    dri3_query =
 554       xcb_dri3_query_version_reply(dri2_dpy->conn, dri3_query_cookie, &error);
 555    if (dri3_query == NULL || error != NULL) {
 556       _eglLog(_EGL_WARNING, "DRI3: failed to query the version");
 557       free(dri3_query);
 558       free(error);
 559       return EGL_FALSE;
 560    }
 561
 562    dri2_dpy->dri3_major_version = dri3_query->major_version;
 563    dri2_dpy->dri3_minor_version = dri3_query->minor_version;
 564    free(dri3_query);
 565
 566    present_query =
 567       xcb_present_query_version_reply(dri2_dpy->conn,
 568                                       present_query_cookie, &error);
 569    if (present_query == NULL || error != NULL) {
 570       _eglLog(_EGL_WARNING, "DRI3: failed to query Present version");
 571       free(present_query);
 572       free(error);
 573       return EGL_FALSE;
 574    }
 575
 576    dri2_dpy->present_major_version = present_query->major_version;
 577    dri2_dpy->present_minor_version = present_query->minor_version;
 578    free(present_query);
 579
 580    dri2_dpy->fd = loader_dri3_open(dri2_dpy->conn, dri2_dpy->screen->root, 0);
 581    if (dri2_dpy->fd < 0) {
 582       int conn_error = xcb_connection_has_error(dri2_dpy->conn);
 583       _eglLog(_EGL_WARNING, "DRI3: Screen seems not DRI3 capable");
 584
 585       if (conn_error)
 586          _eglLog(_EGL_WARNING, "DRI3: Failed to initialize");
 587
 588       return EGL_FALSE;
 589    }
 590
 591    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd, &dri2_dpy->is_different_gpu);
 592
 593    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
 594    if (!dri2_dpy->driver_name) {
 595       _eglLog(_EGL_WARNING, "DRI3: No driver found");
 596       close(dri2_dpy->fd);
 597       return EGL_FALSE;
 598    }
 599
 600 #ifdef HAVE_WAYLAND_PLATFORM
 601    /* Only try to get a render device name since dri3 doesn't provide a
 602     * mechanism for authenticating client opened device node fds. If this
 603     * fails then don't advertise the extension. */
 604    dri2_dpy->device_name = drmGetRenderDeviceNameFromFd(dri2_dpy->fd);
 605 #endif
 606
 607    return EGL_TRUE;
 608 }