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 #include <xcb/xfixes.h>
  32
  33 #include <xf86drm.h>
  34 #include "util/macros.h"
  35
  36 #include "egl_dri2.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(_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    loader_dri3_drawable_fini(&dri3_surf->loader_drawable);
 115
 116    if (surf->Type == EGL_PBUFFER_BIT)
 117       xcb_free_pixmap (dri2_dpy->conn, drawable);
 118
 119    dri2_fini_surface(surf);
 120    free(surf);
 121
 122    return EGL_TRUE;
 123 }
 124
 125 static EGLBoolean
 126 dri3_set_swap_interval(_EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
 127 {
 128    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 129
 130    dri3_surf->surf.base.SwapInterval = interval;
 131    loader_dri3_set_swap_interval(&dri3_surf->loader_drawable, interval);
 132
 133    return EGL_TRUE;
 134 }
 135
 136 static _EGLSurface *
 137 dri3_create_surface(_EGLDisplay *disp, EGLint type, _EGLConfig *conf,
 138                     void *native_surface, const EGLint *attrib_list)
 139 {
 140    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 141    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 142    struct dri3_egl_surface *dri3_surf;
 143    const __DRIconfig *dri_config;
 144    xcb_drawable_t drawable;
 145
 146    dri3_surf = calloc(1, sizeof *dri3_surf);
 147    if (!dri3_surf) {
 148       _eglError(EGL_BAD_ALLOC, "dri3_create_surface");
 149       return NULL;
 150    }
 151
 152    if (!dri2_init_surface(&dri3_surf->surf.base, disp, type, conf,
 153                           attrib_list, false, native_surface))
 154       goto cleanup_surf;
 155
 156    if (type == EGL_PBUFFER_BIT) {
 157       drawable = xcb_generate_id(dri2_dpy->conn);
 158       xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
 159                         drawable, dri2_dpy->screen->root,
 160                         dri3_surf->surf.base.Width, dri3_surf->surf.base.Height);
 161    } else {
 162       STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_surface));
 163       drawable = (uintptr_t) native_surface;
 164    }
 165
 166    dri_config = dri2_get_dri_config(dri2_conf, type,
 167                                     dri3_surf->surf.base.GLColorspace);
 168
 169    if (!dri_config) {
 170       _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
 171       goto cleanup_pixmap;
 172    }
 173
 174    if (loader_dri3_drawable_init(dri2_dpy->conn, drawable,
 175                                  dri2_dpy->dri_screen,
 176                                  dri2_dpy->is_different_gpu,
 177                                  dri2_dpy->multibuffers_available,
 178                                  dri_config,
 179                                  &dri2_dpy->loader_dri3_ext,
 180                                  &egl_dri3_vtable,
 181                                  &dri3_surf->loader_drawable)) {
 182       _eglError(EGL_BAD_ALLOC, "dri3_surface_create");
 183       goto cleanup_pixmap;
 184    }
 185
 186    return &dri3_surf->surf.base;
 187
 188  cleanup_pixmap:
 189    if (type == EGL_PBUFFER_BIT)
 190       xcb_free_pixmap(dri2_dpy->conn, drawable);
 191  cleanup_surf:
 192    free(dri3_surf);
 193
 194    return NULL;
 195 }
 196
 197 static int
 198 dri3_authenticate(_EGLDisplay *disp, uint32_t id)
 199 {
 200 #ifdef HAVE_WAYLAND_PLATFORM
 201    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 202
 203    if (dri2_dpy->device_name) {
 204       _eglLog(_EGL_WARNING,
 205               "Wayland client render node authentication is unnecessary");
 206       return 0;
 207    }
 208
 209    _eglLog(_EGL_WARNING,
 210            "Wayland client primary node authentication isn't supported");
 211 #endif
 212
 213    return -1;
 214 }
 215
 216 /**
 217  * Called via eglCreateWindowSurface(), drv->CreateWindowSurface().
 218  */
 219 static _EGLSurface *
 220 dri3_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
 221                            void *native_window, const EGLint *attrib_list)
 222 {
 223    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 224    _EGLSurface *surf;
 225
 226    surf = dri3_create_surface(disp, EGL_WINDOW_BIT, conf,
 227                               native_window, attrib_list);
 228    if (surf != NULL)
 229       dri3_set_swap_interval(disp, surf, dri2_dpy->default_swap_interval);
 230
 231    return surf;
 232 }
 233
 234 static _EGLSurface *
 235 dri3_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
 236                            void *native_pixmap, const EGLint *attrib_list)
 237 {
 238    return dri3_create_surface(disp, EGL_PIXMAP_BIT, conf,
 239                               native_pixmap, attrib_list);
 240 }
 241
 242 static _EGLSurface *
 243 dri3_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
 244                             const EGLint *attrib_list)
 245 {
 246    return dri3_create_surface(disp, EGL_PBUFFER_BIT, conf,
 247                               NULL, attrib_list);
 248 }
 249
 250 static EGLBoolean
 251 dri3_get_sync_values(_EGLDisplay *display, _EGLSurface *surface,
 252                      EGLuint64KHR *ust, EGLuint64KHR *msc,
 253                      EGLuint64KHR *sbc)
 254 {
 255    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surface);
 256
 257    return loader_dri3_wait_for_msc(&dri3_surf->loader_drawable, 0, 0, 0,
 258                                    (int64_t *) ust, (int64_t *) msc,
 259                                    (int64_t *) sbc) ? EGL_TRUE : EGL_FALSE;
 260 }
 261
 262 static _EGLImage *
 263 dri3_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 264                              EGLClientBuffer buffer, const EGLint *attr_list)
 265 {
 266    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 267    struct dri2_egl_image *dri2_img;
 268    xcb_drawable_t drawable;
 269    xcb_dri3_buffer_from_pixmap_cookie_t bp_cookie;
 270    xcb_dri3_buffer_from_pixmap_reply_t  *bp_reply;
 271    unsigned int format;
 272
 273    drawable = (xcb_drawable_t) (uintptr_t) buffer;
 274    bp_cookie = xcb_dri3_buffer_from_pixmap(dri2_dpy->conn, drawable);
 275    bp_reply = xcb_dri3_buffer_from_pixmap_reply(dri2_dpy->conn,
 276                                                 bp_cookie, NULL);
 277    if (!bp_reply) {
 278       _eglError(EGL_BAD_ALLOC, "xcb_dri3_buffer_from_pixmap");
 279       return NULL;
 280    }
 281
 282    format = dri2_format_for_depth(dri2_dpy, bp_reply->depth);
 283    if (format == __DRI_IMAGE_FORMAT_NONE) {
 284       _eglError(EGL_BAD_PARAMETER,
 285                 "dri3_create_image_khr: unsupported pixmap depth");
 286       free(bp_reply);
 287       return EGL_NO_IMAGE_KHR;
 288    }
 289
 290    dri2_img = malloc(sizeof *dri2_img);
 291    if (!dri2_img) {
 292       _eglError(EGL_BAD_ALLOC, "dri3_create_image_khr");
 293       free(bp_reply);
 294       return EGL_NO_IMAGE_KHR;
 295    }
 296
 297    _eglInitImage(&dri2_img->base, disp);
 298
 299    dri2_img->dri_image = loader_dri3_create_image(dri2_dpy->conn,
 300                                                   bp_reply,
 301                                                   format,
 302                                                   dri2_dpy->dri_screen,
 303                                                   dri2_dpy->image,
 304                                                   dri2_img);
 305
 306    free(bp_reply);
 307
 308    return &dri2_img->base;
 309 }
 310
 311 #ifdef HAVE_DRI3_MODIFIERS
 312 static _EGLImage *
 313 dri3_create_image_khr_pixmap_from_buffers(_EGLDisplay *disp, _EGLContext *ctx,
 314                                           EGLClientBuffer buffer,
 315                                           const EGLint *attr_list)
 316 {
 317    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 318    struct dri2_egl_image *dri2_img;
 319    xcb_dri3_buffers_from_pixmap_cookie_t bp_cookie;
 320    xcb_dri3_buffers_from_pixmap_reply_t  *bp_reply;
 321    xcb_drawable_t drawable;
 322    unsigned int format;
 323
 324    drawable = (xcb_drawable_t) (uintptr_t) buffer;
 325    bp_cookie = xcb_dri3_buffers_from_pixmap(dri2_dpy->conn, drawable);
 326    bp_reply = xcb_dri3_buffers_from_pixmap_reply(dri2_dpy->conn,
 327                                                  bp_cookie, NULL);
 328
 329    if (!bp_reply) {
 330       _eglError(EGL_BAD_ATTRIBUTE, "dri3_create_image_khr");
 331       return EGL_NO_IMAGE_KHR;
 332    }
 333
 334    format = dri2_format_for_depth(dri2_dpy, bp_reply->depth);
 335    if (format == __DRI_IMAGE_FORMAT_NONE) {
 336       _eglError(EGL_BAD_PARAMETER,
 337                 "dri3_create_image_khr: unsupported pixmap depth");
 338       free(bp_reply);
 339       return EGL_NO_IMAGE_KHR;
 340    }
 341
 342    dri2_img = malloc(sizeof *dri2_img);
 343    if (!dri2_img) {
 344       _eglError(EGL_BAD_ALLOC, "dri3_create_image_khr");
 345       free(bp_reply);
 346       return EGL_NO_IMAGE_KHR;
 347    }
 348
 349    _eglInitImage(&dri2_img->base, disp);
 350
 351    dri2_img->dri_image = loader_dri3_create_image_from_buffers(dri2_dpy->conn,
 352                                                                bp_reply,
 353                                                                format,
 354                                                                dri2_dpy->dri_screen,
 355                                                                dri2_dpy->image,
 356                                                                dri2_img);
 357    free(bp_reply);
 358
 359    if (!dri2_img->dri_image) {
 360       _eglError(EGL_BAD_ATTRIBUTE, "dri3_create_image_khr");
 361       free(dri2_img);
 362       return EGL_NO_IMAGE_KHR;
 363    }
 364
 365    return &dri2_img->base;
 366 }
 367 #endif
 368
 369 static _EGLImage *
 370 dri3_create_image_khr(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
 371                       EGLClientBuffer buffer, const EGLint *attr_list)
 372 {
 373 #ifdef HAVE_DRI3_MODIFIERS
 374    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 375 #endif
 376
 377    switch (target) {
 378    case EGL_NATIVE_PIXMAP_KHR:
 379 #ifdef HAVE_DRI3_MODIFIERS
 380       if (dri2_dpy->multibuffers_available)
 381          return dri3_create_image_khr_pixmap_from_buffers(disp, ctx, buffer,
 382                                                           attr_list);
 383 #endif
 384       return dri3_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
 385    default:
 386       return dri2_create_image_khr(disp, ctx, target, buffer, attr_list);
 387    }
 388 }
 389
 390 /**
 391  * Called by the driver when it needs to update the real front buffer with the
 392  * contents of its fake front buffer.
 393  */
 394 static void
 395 dri3_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 396 {
 397    struct loader_dri3_drawable *draw = loaderPrivate;
 398    (void) driDrawable;
 399
 400    /* There does not seem to be any kind of consensus on whether we should
 401     * support front-buffer rendering or not:
 402     * http://lists.freedesktop.org/archives/mesa-dev/2013-June/040129.html
 403     */
 404    if (!draw->is_pixmap)
 405       _eglLog(_EGL_WARNING, "FIXME: egl/x11 doesn't support front buffer rendering.");
 406 }
 407
 408 const __DRIimageLoaderExtension dri3_image_loader_extension = {
 409    .base = { __DRI_IMAGE_LOADER, 1 },
 410
 411    .getBuffers          = loader_dri3_get_buffers,
 412    .flushFrontBuffer    = dri3_flush_front_buffer,
 413 };
 414
 415 static EGLBoolean
 416 dri3_swap_buffers_with_damage(_EGLDisplay *disp, _EGLSurface *draw,
 417                               const EGLint *rects, EGLint n_rects)
 418 {
 419    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(draw);
 420
 421    return loader_dri3_swap_buffers_msc(&dri3_surf->loader_drawable,
 422                                        0, 0, 0, 0,
 423                                        rects, n_rects,
 424                                        draw->SwapBehavior == EGL_BUFFER_PRESERVED) != -1;
 425 }
 426
 427 static EGLBoolean
 428 dri3_swap_buffers(_EGLDisplay *disp, _EGLSurface *draw)
 429 {
 430    return dri3_swap_buffers_with_damage(disp, draw, NULL, 0);
 431 }
 432
 433 static EGLBoolean
 434 dri3_copy_buffers(_EGLDisplay *disp, _EGLSurface *surf, void *native_pixmap_target)
 435 {
 436    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 437    xcb_pixmap_t target;
 438
 439    STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_pixmap_target));
 440    target = (uintptr_t) native_pixmap_target;
 441
 442    loader_dri3_copy_drawable(&dri3_surf->loader_drawable, target,
 443                              dri3_surf->loader_drawable.drawable);
 444
 445    return EGL_TRUE;
 446 }
 447
 448 static int
 449 dri3_query_buffer_age(_EGLDisplay *disp, _EGLSurface *surf)
 450 {
 451    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
 452
 453    return loader_dri3_query_buffer_age(&dri3_surf->loader_drawable);
 454 }
 455
 456 static EGLBoolean
 457 dri3_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
 458                    EGLint attribute, 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(disp, 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 *disp)
 484 {
 485    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 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 = dri3_swap_buffers_with_damage,
 500    .copy_buffers = dri3_copy_buffers,
 501    .query_buffer_age = dri3_query_buffer_age,
 502    .query_surface = dri3_query_surface,
 503    .get_sync_values = dri3_get_sync_values,
 504    .get_dri_drawable = dri3_get_dri_drawable,
 505    .close_screen_notify = dri3_close_screen_notify,
 506 };
 507
 508 /* Only request versions of these protocols which we actually support. */
 509 #define DRI3_SUPPORTED_MAJOR 1
 510 #define PRESENT_SUPPORTED_MAJOR 1
 511
 512 #ifdef HAVE_DRI3_MODIFIERS
 513 #define DRI3_SUPPORTED_MINOR 2
 514 #define PRESENT_SUPPORTED_MINOR 2
 515 #else
 516 #define PRESENT_SUPPORTED_MINOR 0
 517 #define DRI3_SUPPORTED_MINOR 0
 518 #endif
 519
 520 EGLBoolean
 521 dri3_x11_connect(struct dri2_egl_display *dri2_dpy)
 522 {
 523    xcb_dri3_query_version_reply_t *dri3_query;
 524    xcb_dri3_query_version_cookie_t dri3_query_cookie;
 525    xcb_present_query_version_reply_t *present_query;
 526    xcb_present_query_version_cookie_t present_query_cookie;
 527    xcb_xfixes_query_version_reply_t *xfixes_query;
 528    xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
 529    xcb_generic_error_t *error;
 530    const xcb_query_extension_reply_t *extension;
 531
 532    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri3_id);
 533    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_present_id);
 534    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
 535
 536    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_dri3_id);
 537    if (!(extension && extension->present))
 538       return EGL_FALSE;
 539
 540    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_present_id);
 541    if (!(extension && extension->present))
 542       return EGL_FALSE;
 543
 544    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_xfixes_id);
 545    if (!(extension && extension->present))
 546       return EGL_FALSE;
 547
 548    dri3_query_cookie = xcb_dri3_query_version(dri2_dpy->conn,
 549                                               DRI3_SUPPORTED_MAJOR,
 550                                               DRI3_SUPPORTED_MINOR);
 551
 552    present_query_cookie = xcb_present_query_version(dri2_dpy->conn,
 553                                                     PRESENT_SUPPORTED_MAJOR,
 554                                                     PRESENT_SUPPORTED_MINOR);
 555
 556    xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
 557                                                   XCB_XFIXES_MAJOR_VERSION,
 558                                                   XCB_XFIXES_MINOR_VERSION);
 559
 560    dri3_query =
 561       xcb_dri3_query_version_reply(dri2_dpy->conn, dri3_query_cookie, &error);
 562    if (dri3_query == NULL || error != NULL) {
 563       _eglLog(_EGL_WARNING, "DRI3: failed to query the version");
 564       free(dri3_query);
 565       free(error);
 566       return EGL_FALSE;
 567    }
 568
 569    dri2_dpy->dri3_major_version = dri3_query->major_version;
 570    dri2_dpy->dri3_minor_version = dri3_query->minor_version;
 571    free(dri3_query);
 572
 573    present_query =
 574       xcb_present_query_version_reply(dri2_dpy->conn,
 575                                       present_query_cookie, &error);
 576    if (present_query == NULL || error != NULL) {
 577       _eglLog(_EGL_WARNING, "DRI3: failed to query Present version");
 578       free(present_query);
 579       free(error);
 580       return EGL_FALSE;
 581    }
 582
 583    dri2_dpy->present_major_version = present_query->major_version;
 584    dri2_dpy->present_minor_version = present_query->minor_version;
 585    free(present_query);
 586
 587    xfixes_query =
 588       xcb_xfixes_query_version_reply(dri2_dpy->conn,
 589                                       xfixes_query_cookie, &error);
 590    if (xfixes_query == NULL || error != NULL ||
 591        xfixes_query->major_version < 2) {
 592       _eglLog(_EGL_WARNING, "DRI3: failed to query xfixes version");
 593       free(error);
 594       free(xfixes_query);
 595       return EGL_FALSE;
 596    }
 597    free(xfixes_query);
 598
 599    dri2_dpy->fd = loader_dri3_open(dri2_dpy->conn, dri2_dpy->screen->root, 0);
 600    if (dri2_dpy->fd < 0) {
 601       int conn_error = xcb_connection_has_error(dri2_dpy->conn);
 602       _eglLog(_EGL_WARNING, "DRI3: Screen seems not DRI3 capable");
 603
 604       if (conn_error)
 605          _eglLog(_EGL_WARNING, "DRI3: Failed to initialize");
 606
 607       return EGL_FALSE;
 608    }
 609
 610    dri2_dpy->fd = loader_get_user_preferred_fd(dri2_dpy->fd, &dri2_dpy->is_different_gpu);
 611
 612    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
 613    if (!dri2_dpy->driver_name) {
 614       _eglLog(_EGL_WARNING, "DRI3: No driver found");
 615       close(dri2_dpy->fd);
 616       return EGL_FALSE;
 617    }
 618
 619 #ifdef HAVE_WAYLAND_PLATFORM
 620    /* Only try to get a render device name since dri3 doesn't provide a
 621     * mechanism for authenticating client opened device node fds. If this
 622     * fails then don't advertise the extension. */
 623    dri2_dpy->device_name = drmGetRenderDeviceNameFromFd(dri2_dpy->fd);
 624 #endif
 625
 626    return EGL_TRUE;
 627 }