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 <stdbool.h>
  29 #include <stdint.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <stdio.h>
  33 #include <limits.h>
  34 #include <dlfcn.h>
  35 #include <fcntl.h>
  36 #include <errno.h>
  37 #include <unistd.h>
  38 #ifdef HAVE_LIBDRM
  39 #include <xf86drm.h>
  40 #endif
  41 #include <sys/types.h>
  42 #include <sys/stat.h>
  43 #include "util/macros.h"
  44
  45 #include "egl_dri2.h"
  46 #include "egl_dri2_fallbacks.h"
  47 #include "loader.h"
  48
  49 #ifdef HAVE_DRI3
  50 #include "platform_x11_dri3.h"
  51 #endif
  52
  53 static EGLBoolean
  54 dri2_x11_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  55                        EGLint interval);
  56
  57 static void
  58 swrastCreateDrawable(struct dri2_egl_display * dri2_dpy,
  59                      struct dri2_egl_surface * dri2_surf)
  60 {
  61    uint32_t           mask;
  62    const uint32_t     function = GXcopy;
  63    uint32_t           valgc[2];
  64
  65    /* create GC's */
  66    dri2_surf->gc = xcb_generate_id(dri2_dpy->conn);
  67    mask = XCB_GC_FUNCTION;
  68    xcb_create_gc(dri2_dpy->conn, dri2_surf->gc, dri2_surf->drawable, mask, &function);
  69
  70    dri2_surf->swapgc = xcb_generate_id(dri2_dpy->conn);
  71    mask = XCB_GC_FUNCTION | XCB_GC_GRAPHICS_EXPOSURES;
  72    valgc[0] = function;
  73    valgc[1] = False;
  74    xcb_create_gc(dri2_dpy->conn, dri2_surf->swapgc, dri2_surf->drawable, mask, valgc);
  75    switch (dri2_surf->depth) {
  76       case 32:
  77       case 24:
  78          dri2_surf->bytes_per_pixel = 4;
  79          break;
  80       case 16:
  81          dri2_surf->bytes_per_pixel = 2;
  82          break;
  83       case 8:
  84          dri2_surf->bytes_per_pixel = 1;
  85          break;
  86       case 0:
  87          dri2_surf->bytes_per_pixel = 0;
  88          break;
  89       default:
  90          _eglLog(_EGL_WARNING, "unsupported depth %d", dri2_surf->depth);
  91    }
  92 }
  93
  94 static void
  95 swrastDestroyDrawable(struct dri2_egl_display * dri2_dpy,
  96                       struct dri2_egl_surface * dri2_surf)
  97 {
  98    xcb_free_gc(dri2_dpy->conn, dri2_surf->gc);
  99    xcb_free_gc(dri2_dpy->conn, dri2_surf->swapgc);
 100 }
 101
 102 static void
 103 swrastGetDrawableInfo(__DRIdrawable * draw,
 104                       int *x, int *y, int *w, int *h,
 105                       void *loaderPrivate)
 106 {
 107    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 108    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 109
 110    xcb_get_geometry_cookie_t cookie;
 111    xcb_get_geometry_reply_t *reply;
 112    xcb_generic_error_t *error;
 113
 114    *x = *y = *w = *h = 0;
 115    cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 116    reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 117    if (reply == NULL)
 118       return;
 119
 120    if (error != NULL) {
 121       _eglLog(_EGL_WARNING, "error in xcb_get_geometry");
 122       free(error);
 123    } else {
 124       *x = reply->x;
 125       *y = reply->y;
 126       *w = reply->width;
 127       *h = reply->height;
 128    }
 129    free(reply);
 130 }
 131
 132 static void
 133 swrastPutImage(__DRIdrawable * draw, int op,
 134                int x, int y, int w, int h,
 135                char *data, void *loaderPrivate)
 136 {
 137    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 138    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 139
 140    xcb_gcontext_t gc;
 141
 142    switch (op) {
 143    case __DRI_SWRAST_IMAGE_OP_DRAW:
 144       gc = dri2_surf->gc;
 145       break;
 146    case __DRI_SWRAST_IMAGE_OP_SWAP:
 147       gc = dri2_surf->swapgc;
 148       break;
 149    default:
 150       return;
 151    }
 152
 153    xcb_put_image(dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP, dri2_surf->drawable,
 154                  gc, w, h, x, y, 0, dri2_surf->depth,
 155                  w*h*dri2_surf->bytes_per_pixel, (const uint8_t *)data);
 156 }
 157
 158 static void
 159 swrastGetImage(__DRIdrawable * read,
 160                int x, int y, int w, int h,
 161                char *data, void *loaderPrivate)
 162 {
 163    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 164    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 165
 166    xcb_get_image_cookie_t cookie;
 167    xcb_get_image_reply_t *reply;
 168    xcb_generic_error_t *error;
 169
 170    cookie = xcb_get_image (dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
 171                            dri2_surf->drawable, x, y, w, h, ~0);
 172    reply = xcb_get_image_reply (dri2_dpy->conn, cookie, &error);
 173    if (reply == NULL)
 174       return;
 175
 176    if (error != NULL) {
 177       _eglLog(_EGL_WARNING, "error in xcb_get_image");
 178       free(error);
 179    } else {
 180       uint32_t bytes = xcb_get_image_data_length(reply);
 181       uint8_t *idata = xcb_get_image_data(reply);
 182       memcpy(data, idata, bytes);
 183    }
 184    free(reply);
 185 }
 186
 187
 188 static xcb_screen_t *
 189 get_xcb_screen(xcb_screen_iterator_t iter, int screen)
 190 {
 191     for (; iter.rem; --screen, xcb_screen_next(&iter))
 192         if (screen == 0)
 193             return iter.data;
 194
 195     return NULL;
 196 }
 197
 198
 199 /**
 200  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 201  */
 202 static _EGLSurface *
 203 dri2_x11_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 204                         _EGLConfig *conf, void *native_surface,
 205                         const EGLint *attrib_list)
 206 {
 207    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 208    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 209    struct dri2_egl_surface *dri2_surf;
 210    xcb_get_geometry_cookie_t cookie;
 211    xcb_get_geometry_reply_t *reply;
 212    xcb_generic_error_t *error;
 213    xcb_drawable_t drawable;
 214    const __DRIconfig *config;
 215
 216    STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_surface));
 217    drawable = (uintptr_t) native_surface;
 218
 219    (void) drv;
 220
 221    dri2_surf = malloc(sizeof *dri2_surf);
 222    if (!dri2_surf) {
 223       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 224       return NULL;
 225    }
 226
 227    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 228       goto cleanup_surf;
 229
 230    dri2_surf->region = XCB_NONE;
 231    if (type == EGL_PBUFFER_BIT) {
 232       dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
 233       xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
 234                        dri2_surf->drawable, dri2_dpy->screen->root,
 235                         dri2_surf->base.Width, dri2_surf->base.Height);
 236    } else {
 237       if (!drawable) {
 238          if (type == EGL_WINDOW_BIT)
 239             _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 240          else
 241             _eglError(EGL_BAD_NATIVE_PIXMAP, "dri2_create_surface");
 242          goto cleanup_surf;
 243       }
 244       dri2_surf->drawable = drawable;
 245    }
 246
 247    config = dri2_get_dri_config(dri2_conf, type,
 248                                 dri2_surf->base.GLColorspace);
 249
 250    if (dri2_dpy->dri2) {
 251       dri2_surf->dri_drawable =
 252          dri2_dpy->dri2->createNewDrawable(dri2_dpy->dri_screen, config,
 253                                            dri2_surf);
 254    } else {
 255       assert(dri2_dpy->swrast);
 256       dri2_surf->dri_drawable =
 257          dri2_dpy->swrast->createNewDrawable(dri2_dpy->dri_screen, config,
 258                                              dri2_surf);
 259    }
 260
 261    if (dri2_surf->dri_drawable == NULL) {
 262       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 263       goto cleanup_pixmap;
 264    }
 265
 266    if (type != EGL_PBUFFER_BIT) {
 267       cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 268       reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 269       if (error != NULL) {
 270          if (error->error_code == BadAlloc)
 271             _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 272          else if (type == EGL_WINDOW_BIT)
 273             _eglError(EGL_BAD_NATIVE_WINDOW, "xcb_get_geometry");
 274          else
 275             _eglError(EGL_BAD_NATIVE_PIXMAP, "xcb_get_geometry");
 276          free(error);
 277          goto cleanup_dri_drawable;
 278       } else if (reply == NULL) {
 279          _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 280          goto cleanup_dri_drawable;
 281       }
 282
 283       dri2_surf->base.Width = reply->width;
 284       dri2_surf->base.Height = reply->height;
 285       dri2_surf->depth = reply->depth;
 286       free(reply);
 287    }
 288
 289    if (dri2_dpy->dri2) {
 290       xcb_void_cookie_t cookie;
 291       int conn_error;
 292
 293       cookie = xcb_dri2_create_drawable_checked(dri2_dpy->conn,
 294                                                 dri2_surf->drawable);
 295       error = xcb_request_check(dri2_dpy->conn, cookie);
 296       conn_error = xcb_connection_has_error(dri2_dpy->conn);
 297       if (conn_error || error != NULL) {
 298          if (type == EGL_PBUFFER_BIT || conn_error || error->error_code == BadAlloc)
 299             _eglError(EGL_BAD_ALLOC, "xcb_dri2_create_drawable_checked");
 300          else if (type == EGL_WINDOW_BIT)
 301             _eglError(EGL_BAD_NATIVE_WINDOW,
 302                       "xcb_dri2_create_drawable_checked");
 303          else
 304             _eglError(EGL_BAD_NATIVE_PIXMAP,
 305                       "xcb_dri2_create_drawable_checked");
 306          free(error);
 307          goto cleanup_dri_drawable;
 308       }
 309    } else {
 310       if (type == EGL_PBUFFER_BIT) {
 311          dri2_surf->depth = _eglGetConfigKey(conf, EGL_BUFFER_SIZE);
 312       }
 313       swrastCreateDrawable(dri2_dpy, dri2_surf);
 314    }
 315
 316    /* we always copy the back buffer to front */
 317    dri2_surf->base.PostSubBufferSupportedNV = EGL_TRUE;
 318
 319    return &dri2_surf->base;
 320
 321  cleanup_dri_drawable:
 322    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 323  cleanup_pixmap:
 324    if (type == EGL_PBUFFER_BIT)
 325       xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
 326  cleanup_surf:
 327    free(dri2_surf);
 328
 329    return NULL;
 330 }
 331
 332 /**
 333  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 334  */
 335 static _EGLSurface *
 336 dri2_x11_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 337                                _EGLConfig *conf, void *native_window,
 338                                const EGLint *attrib_list)
 339 {
 340    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 341    _EGLSurface *surf;
 342
 343    surf = dri2_x11_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 344                                   native_window, attrib_list);
 345    if (surf != NULL) {
 346       /* When we first create the DRI2 drawable, its swap interval on the
 347        * server side is 1.
 348        */
 349       surf->SwapInterval = 1;
 350
 351       /* Override that with a driconf-set value. */
 352       dri2_x11_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 353    }
 354
 355    return surf;
 356 }
 357
 358 static _EGLSurface *
 359 dri2_x11_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 360                                _EGLConfig *conf, void *native_pixmap,
 361                                const EGLint *attrib_list)
 362 {
 363    return dri2_x11_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
 364                                   native_pixmap, attrib_list);
 365 }
 366
 367 static _EGLSurface *
 368 dri2_x11_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 369                                 _EGLConfig *conf, const EGLint *attrib_list)
 370 {
 371    return dri2_x11_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 372                                   XCB_WINDOW_NONE, attrib_list);
 373 }
 374
 375 static EGLBoolean
 376 dri2_x11_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 377 {
 378    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 379    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 380
 381    (void) drv;
 382
 383    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 384
 385    if (dri2_dpy->dri2) {
 386       xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
 387    } else {
 388       assert(dri2_dpy->swrast);
 389       swrastDestroyDrawable(dri2_dpy, dri2_surf);
 390    }
 391
 392    if (surf->Type == EGL_PBUFFER_BIT)
 393       xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
 394
 395    free(surf);
 396
 397    return EGL_TRUE;
 398 }
 399
 400 /**
 401  * Function utilizes swrastGetDrawableInfo to get surface
 402  * geometry from x server and calls default query surface
 403  * implementation that returns the updated values.
 404  *
 405  * In case of errors we still return values that we currently
 406  * have.
 407  */
 408 static EGLBoolean
 409 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 410                    _EGLSurface *surf, EGLint attribute,
 411                    EGLint *value)
 412 {
 413    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
 414    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 415    int x, y, w = -1, h = -1;
 416
 417    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
 418
 419    switch (attribute) {
 420    case EGL_WIDTH:
 421    case EGL_HEIGHT:
 422       swrastGetDrawableInfo(drawable, &x, &y, &w, &h, dri2_surf);
 423       if (w != -1 && h != -1) {
 424          surf->Width = w;
 425          surf->Height = h;
 426       }
 427       break;
 428    default:
 429       break;
 430    }
 431    return _eglQuerySurface(drv, dpy, surf, attribute, value);
 432 }
 433
 434 /**
 435  * Process list of buffer received from the server
 436  *
 437  * Processes the list of buffers received in a reply from the server to either
 438  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 439  */
 440 static void
 441 dri2_x11_process_buffers(struct dri2_egl_surface *dri2_surf,
 442                          xcb_dri2_dri2_buffer_t *buffers, unsigned count)
 443 {
 444    struct dri2_egl_display *dri2_dpy =
 445       dri2_egl_display(dri2_surf->base.Resource.Display);
 446    xcb_rectangle_t rectangle;
 447
 448    dri2_surf->have_fake_front = false;
 449
 450    /* This assumes the DRI2 buffer attachment tokens matches the
 451     * __DRIbuffer tokens. */
 452    for (unsigned i = 0; i < count; i++) {
 453       dri2_surf->buffers[i].attachment = buffers[i].attachment;
 454       dri2_surf->buffers[i].name = buffers[i].name;
 455       dri2_surf->buffers[i].pitch = buffers[i].pitch;
 456       dri2_surf->buffers[i].cpp = buffers[i].cpp;
 457       dri2_surf->buffers[i].flags = buffers[i].flags;
 458
 459       /* We only use the DRI drivers single buffer configs.  This
 460        * means that if we try to render to a window, DRI2 will give us
 461        * the fake front buffer, which we'll use as a back buffer.
 462        * Note that EGL doesn't require that several clients rendering
 463        * to the same window must see the same aux buffers. */
 464       if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 465          dri2_surf->have_fake_front = true;
 466    }
 467
 468    if (dri2_surf->region != XCB_NONE)
 469       xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
 470
 471    rectangle.x = 0;
 472    rectangle.y = 0;
 473    rectangle.width = dri2_surf->base.Width;
 474    rectangle.height = dri2_surf->base.Height;
 475    dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
 476    xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
 477 }
 478
 479 static __DRIbuffer *
 480 dri2_x11_get_buffers(__DRIdrawable * driDrawable,
 481                      int *width, int *height,
 482                      unsigned int *attachments, int count,
 483                      int *out_count, void *loaderPrivate)
 484 {
 485    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 486    struct dri2_egl_display *dri2_dpy =
 487       dri2_egl_display(dri2_surf->base.Resource.Display);
 488    xcb_dri2_dri2_buffer_t *buffers;
 489    xcb_dri2_get_buffers_reply_t *reply;
 490    xcb_dri2_get_buffers_cookie_t cookie;
 491
 492    (void) driDrawable;
 493
 494    cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 495                                             dri2_surf->drawable,
 496                                             count, count, attachments);
 497    reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
 498    if (reply == NULL)
 499       return NULL;
 500    buffers = xcb_dri2_get_buffers_buffers (reply);
 501    if (buffers == NULL)
 502       return NULL;
 503
 504    *out_count = reply->count;
 505    dri2_surf->base.Width = *width = reply->width;
 506    dri2_surf->base.Height = *height = reply->height;
 507    dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
 508
 509    free(reply);
 510
 511    return dri2_surf->buffers;
 512 }
 513
 514 static __DRIbuffer *
 515 dri2_x11_get_buffers_with_format(__DRIdrawable * driDrawable,
 516                                  int *width, int *height,
 517                                  unsigned int *attachments, int count,
 518                                  int *out_count, void *loaderPrivate)
 519 {
 520    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 521    struct dri2_egl_display *dri2_dpy =
 522       dri2_egl_display(dri2_surf->base.Resource.Display);
 523    xcb_dri2_dri2_buffer_t *buffers;
 524    xcb_dri2_get_buffers_with_format_reply_t *reply;
 525    xcb_dri2_get_buffers_with_format_cookie_t cookie;
 526    xcb_dri2_attach_format_t *format_attachments;
 527
 528    (void) driDrawable;
 529
 530    format_attachments = (xcb_dri2_attach_format_t *) attachments;
 531    cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
 532                                                         dri2_surf->drawable,
 533                                                         count, count,
 534                                                         format_attachments);
 535
 536    reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
 537                                                    cookie, NULL);
 538    if (reply == NULL)
 539       return NULL;
 540
 541    buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
 542    dri2_surf->base.Width = *width = reply->width;
 543    dri2_surf->base.Height = *height = reply->height;
 544    *out_count = reply->count;
 545    dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
 546
 547    free(reply);
 548
 549    return dri2_surf->buffers;
 550 }
 551
 552 static void
 553 dri2_x11_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 554 {
 555    (void) driDrawable;
 556
 557    /* FIXME: Does EGL support front buffer rendering at all? */
 558
 559 #if 0
 560    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 561
 562    dri2WaitGL(dri2_surf);
 563 #else
 564    (void) loaderPrivate;
 565 #endif
 566 }
 567
 568 static int
 569 dri2_x11_do_authenticate(struct dri2_egl_display *dri2_dpy, uint32_t id)
 570 {
 571    xcb_dri2_authenticate_reply_t *authenticate;
 572    xcb_dri2_authenticate_cookie_t authenticate_cookie;
 573    int ret = 0;
 574
 575    authenticate_cookie =
 576       xcb_dri2_authenticate_unchecked(dri2_dpy->conn, dri2_dpy->screen->root, id);
 577    authenticate =
 578       xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
 579
 580    if (authenticate == NULL || !authenticate->authenticated)
 581       ret = -1;
 582
 583    free(authenticate);
 584
 585    return ret;
 586 }
 587
 588 static EGLBoolean
 589 dri2_x11_local_authenticate(struct dri2_egl_display *dri2_dpy)
 590 {
 591 #ifdef HAVE_LIBDRM
 592    drm_magic_t magic;
 593
 594    if (drmGetMagic(dri2_dpy->fd, &magic)) {
 595       _eglLog(_EGL_WARNING, "DRI2: failed to get drm magic");
 596       return EGL_FALSE;
 597    }
 598
 599    if (dri2_x11_do_authenticate(dri2_dpy, magic) < 0) {
 600       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 601       return EGL_FALSE;
 602    }
 603 #endif
 604    return EGL_TRUE;
 605 }
 606
 607 static EGLBoolean
 608 dri2_x11_connect(struct dri2_egl_display *dri2_dpy)
 609 {
 610    xcb_xfixes_query_version_reply_t *xfixes_query;
 611    xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
 612    xcb_dri2_query_version_reply_t *dri2_query;
 613    xcb_dri2_query_version_cookie_t dri2_query_cookie;
 614    xcb_dri2_connect_reply_t *connect;
 615    xcb_dri2_connect_cookie_t connect_cookie;
 616    xcb_generic_error_t *error;
 617    char *driver_name, *loader_driver_name, *device_name;
 618    const xcb_query_extension_reply_t *extension;
 619
 620    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
 621    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
 622
 623    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_xfixes_id);
 624    if (!(extension && extension->present))
 625       return EGL_FALSE;
 626
 627    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_dri2_id);
 628    if (!(extension && extension->present))
 629       return EGL_FALSE;
 630
 631    xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
 632                                                   XCB_XFIXES_MAJOR_VERSION,
 633                                                   XCB_XFIXES_MINOR_VERSION);
 634
 635    dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
 636                                                XCB_DRI2_MAJOR_VERSION,
 637                                                XCB_DRI2_MINOR_VERSION);
 638
 639    connect_cookie = xcb_dri2_connect_unchecked(dri2_dpy->conn, dri2_dpy->screen->root,
 640                                    XCB_DRI2_DRIVER_TYPE_DRI);
 641
 642    xfixes_query =
 643       xcb_xfixes_query_version_reply (dri2_dpy->conn,
 644                                       xfixes_query_cookie, &error);
 645    if (xfixes_query == NULL ||
 646        error != NULL || xfixes_query->major_version < 2) {
 647       _eglLog(_EGL_WARNING, "DRI2: failed to query xfixes version");
 648       free(error);
 649       return EGL_FALSE;
 650    }
 651    free(xfixes_query);
 652
 653    dri2_query =
 654       xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
 655    if (dri2_query == NULL || error != NULL) {
 656       _eglLog(_EGL_WARNING, "DRI2: failed to query version");
 657       free(error);
 658       return EGL_FALSE;
 659    }
 660    dri2_dpy->dri2_major = dri2_query->major_version;
 661    dri2_dpy->dri2_minor = dri2_query->minor_version;
 662    free(dri2_query);
 663
 664    connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
 665    if (connect == NULL ||
 666        connect->driver_name_length + connect->device_name_length == 0) {
 667       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 668       return EGL_FALSE;
 669    }
 670
 671    device_name = xcb_dri2_connect_device_name (connect);
 672
 673    dri2_dpy->fd = loader_open_device(device_name);
 674    if (dri2_dpy->fd == -1) {
 675       _eglLog(_EGL_WARNING,
 676               "DRI2: could not open %s (%s)", device_name, strerror(errno));
 677       free(connect);
 678       return EGL_FALSE;
 679    }
 680
 681    if (!dri2_x11_local_authenticate(dri2_dpy)) {
 682       close(dri2_dpy->fd);
 683       free(connect);
 684       return EGL_FALSE;
 685    }
 686
 687    driver_name = xcb_dri2_connect_driver_name (connect);
 688
 689    /* If Mesa knows about the appropriate driver for this fd, then trust it.
 690     * Otherwise, default to the server's value.
 691     */
 692    loader_driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
 693    if (loader_driver_name) {
 694       dri2_dpy->driver_name = loader_driver_name;
 695    } else {
 696       dri2_dpy->driver_name =
 697          strndup(driver_name,
 698                  xcb_dri2_connect_driver_name_length(connect));
 699    }
 700
 701    if (dri2_dpy->driver_name == NULL) {
 702       close(dri2_dpy->fd);
 703       free(dri2_dpy->driver_name);
 704       free(connect);
 705       return EGL_FALSE;
 706    }
 707
 708 #ifdef HAVE_WAYLAND_PLATFORM
 709    dri2_dpy->device_name =
 710       strndup(device_name,
 711               xcb_dri2_connect_device_name_length(connect));
 712 #endif
 713
 714    free(connect);
 715
 716    return EGL_TRUE;
 717 }
 718
 719 static int
 720 dri2_x11_authenticate(_EGLDisplay *disp, uint32_t id)
 721 {
 722    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 723
 724    return dri2_x11_do_authenticate(dri2_dpy, id);
 725 }
 726
 727 static EGLBoolean
 728 dri2_x11_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
 729                                  _EGLDisplay *disp, bool supports_preserved)
 730 {
 731    xcb_depth_iterator_t d;
 732    xcb_visualtype_t *visuals;
 733    int config_count = 0;
 734    EGLint surface_type;
 735
 736    d = xcb_screen_allowed_depths_iterator(dri2_dpy->screen);
 737
 738    surface_type =
 739       EGL_WINDOW_BIT |
 740       EGL_PIXMAP_BIT |
 741       EGL_PBUFFER_BIT;
 742
 743    if (supports_preserved)
 744       surface_type |= EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
 745
 746    while (d.rem > 0) {
 747       EGLBoolean class_added[6] = { 0, };
 748
 749       visuals = xcb_depth_visuals(d.data);
 750
 751       for (int i = 0; i < xcb_depth_visuals_length(d.data); i++) {
 752          if (class_added[visuals[i]._class])
 753             continue;
 754
 755          class_added[visuals[i]._class] = EGL_TRUE;
 756
 757          for (int j = 0; dri2_dpy->driver_configs[j]; j++) {
 758             struct dri2_egl_config *dri2_conf;
 759             const __DRIconfig *config = dri2_dpy->driver_configs[j];
 760
 761             const EGLint config_attrs[] = {
 762                     EGL_NATIVE_VISUAL_ID,    visuals[i].visual_id,
 763                     EGL_NATIVE_VISUAL_TYPE,  visuals[i]._class,
 764                     EGL_NONE
 765             };
 766
 767             unsigned int rgba_masks[4] = {
 768                visuals[i].red_mask,
 769                visuals[i].green_mask,
 770                visuals[i].blue_mask,
 771                0,
 772             };
 773
 774             dri2_conf = dri2_add_config(disp, config, config_count + 1,
 775                                         surface_type, config_attrs,
 776                                         rgba_masks);
 777             if (dri2_conf)
 778                if (dri2_conf->base.ConfigID == config_count + 1)
 779                   config_count++;
 780
 781             /* Allow a 24-bit RGB visual to match a 32-bit RGBA EGLConfig.
 782              * Otherwise it will only match a 32-bit RGBA visual.  On a
 783              * composited window manager on X11, this will make all of the
 784              * EGLConfigs with destination alpha get blended by the
 785              * compositor.  This is probably not what the application
 786              * wants... especially on drivers that only have 32-bit RGBA
 787              * EGLConfigs! */
 788             if (d.data->depth == 24) {
 789                rgba_masks[3] =
 790                   ~(rgba_masks[0] | rgba_masks[1] | rgba_masks[2]);
 791                dri2_conf = dri2_add_config(disp, config, config_count + 1,
 792                                            surface_type, config_attrs,
 793                                            rgba_masks);
 794                if (dri2_conf)
 795                   if (dri2_conf->base.ConfigID == config_count + 1)
 796                      config_count++;
 797             }
 798          }
 799       }
 800
 801       xcb_depth_next(&d);
 802    }
 803
 804    if (!config_count) {
 805       _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
 806       return EGL_FALSE;
 807    }
 808
 809    return EGL_TRUE;
 810 }
 811
 812 static EGLBoolean
 813 dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
 814                  _EGLSurface *draw, xcb_xfixes_region_t region)
 815 {
 816    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 817    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 818    enum xcb_dri2_attachment_t render_attachment;
 819    xcb_dri2_copy_region_cookie_t cookie;
 820
 821    /* No-op for a pixmap or pbuffer surface */
 822    if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
 823       return EGL_TRUE;
 824
 825    dri2_dpy->flush->flush(dri2_surf->dri_drawable);
 826
 827    if (dri2_surf->have_fake_front)
 828       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
 829    else
 830       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
 831
 832    cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
 833                                            dri2_surf->drawable,
 834                                            region,
 835                                            XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
 836                                            render_attachment);
 837    free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
 838
 839    return EGL_TRUE;
 840 }
 841
 842 static int64_t
 843 dri2_x11_swap_buffers_msc(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 844                           int64_t msc, int64_t divisor, int64_t remainder)
 845 {
 846    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 847    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 848    uint32_t msc_hi = msc >> 32;
 849    uint32_t msc_lo = msc & 0xffffffff;
 850    uint32_t divisor_hi = divisor >> 32;
 851    uint32_t divisor_lo = divisor & 0xffffffff;
 852    uint32_t remainder_hi = remainder >> 32;
 853    uint32_t remainder_lo = remainder & 0xffffffff;
 854    xcb_dri2_swap_buffers_cookie_t cookie;
 855    xcb_dri2_swap_buffers_reply_t *reply;
 856    int64_t swap_count = -1;
 857
 858    /* No-op for a pixmap or pbuffer surface */
 859    if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
 860       return 0;
 861
 862    if (draw->SwapBehavior == EGL_BUFFER_PRESERVED || !dri2_dpy->swap_available)
 863       return dri2_copy_region(drv, disp, draw, dri2_surf->region) ? 0 : -1;
 864
 865    dri2_flush_drawable_for_swapbuffers(disp, draw);
 866
 867    cookie = xcb_dri2_swap_buffers_unchecked(dri2_dpy->conn, dri2_surf->drawable,
 868                   msc_hi, msc_lo, divisor_hi, divisor_lo, remainder_hi, remainder_lo);
 869
 870    reply = xcb_dri2_swap_buffers_reply(dri2_dpy->conn, cookie, NULL);
 871
 872    if (reply) {
 873       swap_count = (((int64_t)reply->swap_hi) << 32) | reply->swap_lo;
 874       free(reply);
 875    }
 876
 877    /* Since we aren't watching for the server's invalidate events like we're
 878     * supposed to (due to XCB providing no mechanism for filtering the events
 879     * the way xlib does), and SwapBuffers is a common cause of invalidate
 880     * events, just shove one down to the driver, even though we haven't told
 881     * the driver that we're the kind of loader that provides reliable
 882     * invalidate events.  This causes the driver to request buffers again at
 883     * its next draw, so that we get the correct buffers if a pageflip
 884     * happened.  The driver should still be using the viewport hack to catch
 885     * window resizes.
 886     */
 887    if (dri2_dpy->flush->base.version >= 3 && dri2_dpy->flush->invalidate)
 888       dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 889
 890    return swap_count;
 891 }
 892
 893 static EGLBoolean
 894 dri2_x11_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 895 {
 896    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 897    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 898
 899    if (!dri2_dpy->flush) {
 900       dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
 901       return EGL_TRUE;
 902    }
 903
 904    if (dri2_x11_swap_buffers_msc(drv, disp, draw, 0, 0, 0) == -1) {
 905       /* Swap failed with a window drawable. */
 906       return _eglError(EGL_BAD_NATIVE_WINDOW, __func__);
 907    }
 908    return EGL_TRUE;
 909 }
 910
 911 static EGLBoolean
 912 dri2_x11_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp,
 913                              _EGLSurface *draw,
 914                              EGLint numRects, const EGLint *rects)
 915 {
 916    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 917    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 918    EGLBoolean ret;
 919    xcb_xfixes_region_t region;
 920    xcb_rectangle_t rectangles[16];
 921
 922    if (numRects > (int)ARRAY_SIZE(rectangles))
 923       return dri2_copy_region(drv, disp, draw, dri2_surf->region);
 924
 925    for (int i = 0; i < numRects; i++) {
 926       rectangles[i].x = rects[i * 4];
 927       rectangles[i].y = dri2_surf->base.Height - rects[i * 4 + 1] - rects[i * 4 + 3];
 928       rectangles[i].width = rects[i * 4 + 2];
 929       rectangles[i].height = rects[i * 4 + 3];
 930    }
 931
 932    region = xcb_generate_id(dri2_dpy->conn);
 933    xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles);
 934    ret = dri2_copy_region(drv, disp, draw, region);
 935    xcb_xfixes_destroy_region(dri2_dpy->conn, region);
 936
 937    return ret;
 938 }
 939
 940 static EGLBoolean
 941 dri2_x11_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 942                      EGLint x, EGLint y, EGLint width, EGLint height)
 943 {
 944    const EGLint rect[4] = { x, y, width, height };
 945
 946    if (x < 0 || y < 0 || width < 0 || height < 0)
 947       _eglError(EGL_BAD_PARAMETER, "eglPostSubBufferNV");
 948
 949    return dri2_x11_swap_buffers_region(drv, disp, draw, 1, rect);
 950 }
 951
 952 static EGLBoolean
 953 dri2_x11_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 954                        EGLint interval)
 955 {
 956    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 957    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 958
 959    if (dri2_dpy->swap_available)
 960       xcb_dri2_swap_interval(dri2_dpy->conn, dri2_surf->drawable, interval);
 961
 962    return EGL_TRUE;
 963 }
 964
 965 static EGLBoolean
 966 dri2_x11_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 967                       void *native_pixmap_target)
 968 {
 969    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 970    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 971    xcb_gcontext_t gc;
 972    xcb_pixmap_t target;
 973
 974    STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_pixmap_target));
 975    target = (uintptr_t) native_pixmap_target;
 976
 977    (void) drv;
 978
 979    dri2_dpy->flush->flush(dri2_surf->dri_drawable);
 980
 981    gc = xcb_generate_id(dri2_dpy->conn);
 982    xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
 983    xcb_copy_area(dri2_dpy->conn,
 984                   dri2_surf->drawable,
 985                   target,
 986                   gc,
 987                   0, 0,
 988                   0, 0,
 989                   dri2_surf->base.Width,
 990                   dri2_surf->base.Height);
 991    xcb_free_gc(dri2_dpy->conn, gc);
 992
 993    return EGL_TRUE;
 994 }
 995
 996 static _EGLImage *
 997 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 998                              EGLClientBuffer buffer, const EGLint *attr_list)
 999 {
1000    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1001    struct dri2_egl_image *dri2_img;
1002    unsigned int attachments[1];
1003    xcb_drawable_t drawable;
1004    xcb_dri2_get_buffers_cookie_t buffers_cookie;
1005    xcb_dri2_get_buffers_reply_t *buffers_reply;
1006    xcb_dri2_dri2_buffer_t *buffers;
1007    xcb_get_geometry_cookie_t geometry_cookie;
1008    xcb_get_geometry_reply_t *geometry_reply;
1009    xcb_generic_error_t *error;
1010    int stride, format;
1011
1012    (void) ctx;
1013
1014    drawable = (xcb_drawable_t) (uintptr_t) buffer;
1015    xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
1016    attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
1017    buffers_cookie =
1018       xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
1019                                       drawable, 1, 1, attachments);
1020    geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
1021    buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
1022                                                buffers_cookie, NULL);
1023    if (buffers_reply == NULL)
1024      return NULL;
1025
1026    buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
1027    if (buffers == NULL) {
1028       return NULL;
1029    }
1030
1031    geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
1032                                             geometry_cookie, &error);
1033    if (geometry_reply == NULL || error != NULL) {
1034       _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
1035       free(error);
1036       free(buffers_reply);
1037       return NULL;
1038    }
1039
1040    switch (geometry_reply->depth) {
1041    case 16:
1042       format = __DRI_IMAGE_FORMAT_RGB565;
1043       break;
1044    case 24:
1045       format = __DRI_IMAGE_FORMAT_XRGB8888;
1046       break;
1047    case 32:
1048       format = __DRI_IMAGE_FORMAT_ARGB8888;
1049       break;
1050    default:
1051       _eglError(EGL_BAD_PARAMETER,
1052                 "dri2_create_image_khr: unsupported pixmap depth");
1053       free(buffers_reply);
1054       free(geometry_reply);
1055       return NULL;
1056    }
1057
1058    dri2_img = malloc(sizeof *dri2_img);
1059    if (!dri2_img) {
1060       free(buffers_reply);
1061       free(geometry_reply);
1062       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1063       return EGL_NO_IMAGE_KHR;
1064    }
1065
1066    _eglInitImage(&dri2_img->base, disp);
1067
1068    stride = buffers[0].pitch / buffers[0].cpp;
1069    dri2_img->dri_image =
1070       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1071                                            buffers_reply->width,
1072                                            buffers_reply->height,
1073                                            format,
1074                                            buffers[0].name,
1075                                            stride,
1076                                            dri2_img);
1077
1078    free(buffers_reply);
1079    free(geometry_reply);
1080
1081    return &dri2_img->base;
1082 }
1083
1084 static _EGLImage *
1085 dri2_x11_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1086                           _EGLContext *ctx, EGLenum target,
1087                           EGLClientBuffer buffer, const EGLint *attr_list)
1088 {
1089    (void) drv;
1090
1091    switch (target) {
1092    case EGL_NATIVE_PIXMAP_KHR:
1093       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
1094    default:
1095       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
1096    }
1097 }
1098
1099 static EGLBoolean
1100 dri2_x11_get_sync_values(_EGLDisplay *display, _EGLSurface *surface,
1101                          EGLuint64KHR *ust, EGLuint64KHR *msc,
1102                          EGLuint64KHR *sbc)
1103 {
1104    struct dri2_egl_display *dri2_dpy = dri2_egl_display(display);
1105    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
1106    xcb_dri2_get_msc_cookie_t cookie;
1107    xcb_dri2_get_msc_reply_t *reply;
1108
1109    cookie = xcb_dri2_get_msc(dri2_dpy->conn, dri2_surf->drawable);
1110    reply = xcb_dri2_get_msc_reply(dri2_dpy->conn, cookie, NULL);
1111
1112    if (!reply)
1113       return _eglError(EGL_BAD_ACCESS, __func__);
1114
1115    *ust = ((EGLuint64KHR) reply->ust_hi << 32) | reply->ust_lo;
1116    *msc = ((EGLuint64KHR) reply->msc_hi << 32) | reply->msc_lo;
1117    *sbc = ((EGLuint64KHR) reply->sbc_hi << 32) | reply->sbc_lo;
1118    free(reply);
1119
1120    return EGL_TRUE;
1121 }
1122
1123 static const struct dri2_egl_display_vtbl dri2_x11_swrast_display_vtbl = {
1124    .authenticate = NULL,
1125    .create_window_surface = dri2_x11_create_window_surface,
1126    .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1127    .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1128    .destroy_surface = dri2_x11_destroy_surface,
1129    .create_image = dri2_fallback_create_image_khr,
1130    .swap_interval = dri2_fallback_swap_interval,
1131    .swap_buffers = dri2_x11_swap_buffers,
1132    .set_damage_region = dri2_fallback_set_damage_region,
1133    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1134    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1135    .copy_buffers = dri2_x11_copy_buffers,
1136    .query_buffer_age = dri2_fallback_query_buffer_age,
1137    .query_surface = dri2_query_surface,
1138    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1139    .get_sync_values = dri2_fallback_get_sync_values,
1140    .get_dri_drawable = dri2_surface_get_dri_drawable,
1141 };
1142
1143 static const struct dri2_egl_display_vtbl dri2_x11_display_vtbl = {
1144    .authenticate = dri2_x11_authenticate,
1145    .create_window_surface = dri2_x11_create_window_surface,
1146    .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1147    .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1148    .destroy_surface = dri2_x11_destroy_surface,
1149    .create_image = dri2_x11_create_image_khr,
1150    .swap_interval = dri2_x11_swap_interval,
1151    .swap_buffers = dri2_x11_swap_buffers,
1152    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1153    .swap_buffers_region = dri2_x11_swap_buffers_region,
1154    .set_damage_region = dri2_fallback_set_damage_region,
1155    .post_sub_buffer = dri2_x11_post_sub_buffer,
1156    .copy_buffers = dri2_x11_copy_buffers,
1157    .query_buffer_age = dri2_fallback_query_buffer_age,
1158    .query_surface = dri2_query_surface,
1159    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1160    .get_sync_values = dri2_x11_get_sync_values,
1161    .get_dri_drawable = dri2_surface_get_dri_drawable,
1162 };
1163
1164 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1165    .base = { __DRI_SWRAST_LOADER, 1 },
1166
1167    .getDrawableInfo = swrastGetDrawableInfo,
1168    .putImage        = swrastPutImage,
1169    .getImage        = swrastGetImage,
1170 };
1171
1172 static const __DRIextension *swrast_loader_extensions[] = {
1173    &swrast_loader_extension.base,
1174    NULL,
1175 };
1176
1177 static EGLBoolean
1178 dri2_get_xcb_connection(_EGLDriver *drv, _EGLDisplay *disp,
1179                         struct dri2_egl_display *dri2_dpy)
1180 {
1181    xcb_screen_iterator_t s;
1182    int screen = (uintptr_t)disp->Options.Platform;
1183    const char *msg;
1184
1185    disp->DriverData = (void *) dri2_dpy;
1186    if (disp->PlatformDisplay == NULL) {
1187       dri2_dpy->conn = xcb_connect(NULL, &screen);
1188       dri2_dpy->own_device = true;
1189    } else {
1190       Display *dpy = disp->PlatformDisplay;
1191
1192       dri2_dpy->conn = XGetXCBConnection(dpy);
1193       screen = DefaultScreen(dpy);
1194    }
1195
1196    if (!dri2_dpy->conn || xcb_connection_has_error(dri2_dpy->conn)) {
1197       msg = "xcb_connect failed";
1198       goto disconnect;
1199    }
1200
1201    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
1202    dri2_dpy->screen = get_xcb_screen(s, screen);
1203    if (!dri2_dpy->screen) {
1204       msg = "failed to get xcb screen";
1205       goto disconnect;
1206    }
1207
1208    return EGL_TRUE;
1209 disconnect:
1210    if (disp->PlatformDisplay == NULL)
1211       xcb_disconnect(dri2_dpy->conn);
1212
1213    return _eglError(EGL_BAD_ALLOC, msg);
1214 }
1215
1216 static EGLBoolean
1217 dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1218 {
1219    struct dri2_egl_display *dri2_dpy;
1220
1221    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1222    if (!dri2_dpy)
1223       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1224
1225    dri2_dpy->fd = -1;
1226    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1227       goto cleanup;
1228
1229    /*
1230     * Every hardware driver_name is set using strdup. Doing the same in
1231     * here will allow is to simply free the memory at dri2_terminate().
1232     */
1233    dri2_dpy->driver_name = strdup("swrast");
1234    if (!dri2_load_driver_swrast(disp))
1235       goto cleanup;
1236
1237    dri2_dpy->loader_extensions = swrast_loader_extensions;
1238
1239    if (!dri2_create_screen(disp))
1240       goto cleanup;
1241
1242    if (!dri2_setup_extensions(disp))
1243       goto cleanup;
1244
1245    dri2_setup_screen(disp);
1246
1247    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
1248       goto cleanup;
1249
1250    /* Fill vtbl last to prevent accidentally calling virtual function during
1251     * initialization.
1252     */
1253    dri2_dpy->vtbl = &dri2_x11_swrast_display_vtbl;
1254
1255    return EGL_TRUE;
1256
1257  cleanup:
1258    dri2_display_destroy(disp);
1259    return EGL_FALSE;
1260 }
1261
1262 static void
1263 dri2_x11_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1264 {
1265    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1266    int arbitrary_max_interval = 1000;
1267
1268    /* default behavior for no SwapBuffers support: no vblank syncing
1269     * either.
1270     */
1271    dri2_dpy->min_swap_interval = 0;
1272    dri2_dpy->max_swap_interval = 0;
1273
1274    if (!dri2_dpy->swap_available)
1275       return;
1276
1277    /* If we do have swapbuffers, then we can support pretty much any swap
1278     * interval, but we allow driconf to override applications.
1279     */
1280    if (dri2_dpy->config)
1281       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1282                                      "vblank_mode", &vblank_mode);
1283    switch (vblank_mode) {
1284    case DRI_CONF_VBLANK_NEVER:
1285       dri2_dpy->min_swap_interval = 0;
1286       dri2_dpy->max_swap_interval = 0;
1287       dri2_dpy->default_swap_interval = 0;
1288       break;
1289    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1290       dri2_dpy->min_swap_interval = 1;
1291       dri2_dpy->max_swap_interval = arbitrary_max_interval;
1292       dri2_dpy->default_swap_interval = 1;
1293       break;
1294    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1295       dri2_dpy->min_swap_interval = 0;
1296       dri2_dpy->max_swap_interval = arbitrary_max_interval;
1297       dri2_dpy->default_swap_interval = 0;
1298       break;
1299    default:
1300    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1301       dri2_dpy->min_swap_interval = 0;
1302       dri2_dpy->max_swap_interval = arbitrary_max_interval;
1303       dri2_dpy->default_swap_interval = 1;
1304       break;
1305    }
1306 }
1307
1308 #ifdef HAVE_DRI3
1309
1310 static const __DRIextension *dri3_image_loader_extensions[] = {
1311    &dri3_image_loader_extension.base,
1312    &image_lookup_extension.base,
1313    &use_invalidate.base,
1314    NULL,
1315 };
1316
1317 static EGLBoolean
1318 dri2_initialize_x11_dri3(_EGLDriver *drv, _EGLDisplay *disp)
1319 {
1320    struct dri2_egl_display *dri2_dpy;
1321
1322    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1323    if (!dri2_dpy)
1324       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1325
1326    dri2_dpy->fd = -1;
1327    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1328       goto cleanup;
1329
1330    if (!dri3_x11_connect(dri2_dpy))
1331       goto cleanup;
1332
1333    if (!dri2_load_driver_dri3(disp))
1334       goto cleanup;
1335
1336    dri2_dpy->loader_extensions = dri3_image_loader_extensions;
1337
1338    dri2_dpy->swap_available = true;
1339    dri2_dpy->invalidate_available = true;
1340
1341    if (!dri2_create_screen(disp))
1342       goto cleanup;
1343
1344    if (!dri2_setup_extensions(disp))
1345       goto cleanup;
1346
1347    dri2_setup_screen(disp);
1348
1349    dri2_x11_setup_swap_interval(dri2_dpy);
1350
1351    if (!dri2_dpy->is_different_gpu)
1352       disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1353    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1354    disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1355    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1356
1357    dri2_set_WL_bind_wayland_display(drv, disp);
1358
1359    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, false))
1360       goto cleanup;
1361
1362    dri2_dpy->loader_dri3_ext.core = dri2_dpy->core;
1363    dri2_dpy->loader_dri3_ext.image_driver = dri2_dpy->image_driver;
1364    dri2_dpy->loader_dri3_ext.flush = dri2_dpy->flush;
1365    dri2_dpy->loader_dri3_ext.tex_buffer = dri2_dpy->tex_buffer;
1366    dri2_dpy->loader_dri3_ext.image = dri2_dpy->image;
1367    dri2_dpy->loader_dri3_ext.config = dri2_dpy->config;
1368
1369    /* Fill vtbl last to prevent accidentally calling virtual function during
1370     * initialization.
1371     */
1372    dri2_dpy->vtbl = &dri3_x11_display_vtbl;
1373
1374    _eglLog(_EGL_INFO, "Using DRI3");
1375
1376    return EGL_TRUE;
1377
1378  cleanup:
1379    dri2_display_destroy(disp);
1380    return EGL_FALSE;
1381 }
1382 #endif
1383
1384 static const __DRIdri2LoaderExtension dri2_loader_extension_old = {
1385    .base = { __DRI_DRI2_LOADER, 2 },
1386
1387    .getBuffers           = dri2_x11_get_buffers,
1388    .flushFrontBuffer     = dri2_x11_flush_front_buffer,
1389    .getBuffersWithFormat = NULL,
1390 };
1391
1392 static const __DRIdri2LoaderExtension dri2_loader_extension = {
1393    .base = { __DRI_DRI2_LOADER, 3 },
1394
1395    .getBuffers           = dri2_x11_get_buffers,
1396    .flushFrontBuffer     = dri2_x11_flush_front_buffer,
1397    .getBuffersWithFormat = dri2_x11_get_buffers_with_format,
1398 };
1399
1400 static const __DRIextension *dri2_loader_extensions_old[] = {
1401    &dri2_loader_extension_old.base,
1402    &image_lookup_extension.base,
1403    &background_callable_extension.base,
1404    NULL,
1405 };
1406
1407 static const __DRIextension *dri2_loader_extensions[] = {
1408    &dri2_loader_extension.base,
1409    &image_lookup_extension.base,
1410    &background_callable_extension.base,
1411    NULL,
1412 };
1413
1414 static EGLBoolean
1415 dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp)
1416 {
1417    struct dri2_egl_display *dri2_dpy;
1418
1419    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1420    if (!dri2_dpy)
1421       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1422
1423    dri2_dpy->fd = -1;
1424    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1425       goto cleanup;
1426
1427    if (!dri2_x11_connect(dri2_dpy))
1428       goto cleanup;
1429
1430    if (!dri2_load_driver(disp))
1431       goto cleanup;
1432
1433    if (dri2_dpy->dri2_minor >= 1)
1434       dri2_dpy->loader_extensions = dri2_loader_extensions;
1435    else
1436       dri2_dpy->loader_extensions = dri2_loader_extensions_old;
1437
1438    dri2_dpy->swap_available = (dri2_dpy->dri2_minor >= 2);
1439    dri2_dpy->invalidate_available = (dri2_dpy->dri2_minor >= 3);
1440
1441    if (!dri2_create_screen(disp))
1442       goto cleanup;
1443
1444    if (!dri2_setup_extensions(disp))
1445       goto cleanup;
1446
1447    dri2_setup_screen(disp);
1448
1449    dri2_x11_setup_swap_interval(dri2_dpy);
1450
1451    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1452    disp->Extensions.NOK_swap_region = EGL_TRUE;
1453    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1454    disp->Extensions.NV_post_sub_buffer = EGL_TRUE;
1455    disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1456
1457    dri2_set_WL_bind_wayland_display(drv, disp);
1458
1459    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
1460       goto cleanup;
1461
1462    /* Fill vtbl last to prevent accidentally calling virtual function during
1463     * initialization.
1464     */
1465    dri2_dpy->vtbl = &dri2_x11_display_vtbl;
1466
1467    _eglLog(_EGL_INFO, "Using DRI2");
1468
1469    return EGL_TRUE;
1470
1471  cleanup:
1472    dri2_display_destroy(disp);
1473    return EGL_FALSE;
1474 }
1475
1476 EGLBoolean
1477 dri2_initialize_x11(_EGLDriver *drv, _EGLDisplay *disp)
1478 {
1479    EGLBoolean initialized = EGL_FALSE;
1480
1481    if (!getenv("LIBGL_ALWAYS_SOFTWARE")) {
1482 #ifdef HAVE_DRI3
1483       if (!getenv("LIBGL_DRI3_DISABLE"))
1484          initialized = dri2_initialize_x11_dri3(drv, disp);
1485 #endif
1486
1487       if (!initialized)
1488          initialized = dri2_initialize_x11_dri2(drv, disp);
1489    }
1490
1491    if (!initialized)
1492       initialized = dri2_initialize_x11_swrast(drv, disp);
1493
1494    return initialized;
1495 }
1496