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/debug.h"
  44 #include "util/macros.h"
  45 #include "util/bitscan.h"
  46
  47 #include "egl_dri2.h"
  48 #include "egl_dri2_fallbacks.h"
  49 #include "loader.h"
  50
  51 #ifdef HAVE_DRI3
  52 #include "platform_x11_dri3.h"
  53 #endif
  54
  55 static EGLBoolean
  56 dri2_x11_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  57                        EGLint interval);
  58
  59 uint32_t
  60 dri2_format_for_depth(struct dri2_egl_display *dri2_dpy, uint32_t depth);
  61
  62 static void
  63 swrastCreateDrawable(struct dri2_egl_display * dri2_dpy,
  64                      struct dri2_egl_surface * dri2_surf)
  65 {
  66    uint32_t           mask;
  67    const uint32_t     function = GXcopy;
  68    uint32_t           valgc[2];
  69
  70    /* create GC's */
  71    dri2_surf->gc = xcb_generate_id(dri2_dpy->conn);
  72    mask = XCB_GC_FUNCTION;
  73    xcb_create_gc(dri2_dpy->conn, dri2_surf->gc, dri2_surf->drawable, mask, &function);
  74
  75    dri2_surf->swapgc = xcb_generate_id(dri2_dpy->conn);
  76    mask = XCB_GC_FUNCTION | XCB_GC_GRAPHICS_EXPOSURES;
  77    valgc[0] = function;
  78    valgc[1] = False;
  79    xcb_create_gc(dri2_dpy->conn, dri2_surf->swapgc, dri2_surf->drawable, mask, valgc);
  80    switch (dri2_surf->depth) {
  81       case 32:
  82       case 30:
  83       case 24:
  84          dri2_surf->bytes_per_pixel = 4;
  85          break;
  86       case 16:
  87          dri2_surf->bytes_per_pixel = 2;
  88          break;
  89       case 8:
  90          dri2_surf->bytes_per_pixel = 1;
  91          break;
  92       case 0:
  93          dri2_surf->bytes_per_pixel = 0;
  94          break;
  95       default:
  96          _eglLog(_EGL_WARNING, "unsupported depth %d", dri2_surf->depth);
  97    }
  98 }
  99
 100 static void
 101 swrastDestroyDrawable(struct dri2_egl_display * dri2_dpy,
 102                       struct dri2_egl_surface * dri2_surf)
 103 {
 104    xcb_free_gc(dri2_dpy->conn, dri2_surf->gc);
 105    xcb_free_gc(dri2_dpy->conn, dri2_surf->swapgc);
 106 }
 107
 108 static bool
 109 x11_get_drawable_info(__DRIdrawable * draw,
 110                       int *x, int *y, int *w, int *h,
 111                       void *loaderPrivate)
 112 {
 113    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 114    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 115
 116    xcb_get_geometry_cookie_t cookie;
 117    xcb_get_geometry_reply_t *reply;
 118    xcb_generic_error_t *error;
 119    bool ret;
 120
 121    cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 122    reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 123    if (reply == NULL)
 124       return false;
 125
 126    if (error != NULL) {
 127       ret = false;
 128       _eglLog(_EGL_WARNING, "error in xcb_get_geometry");
 129       free(error);
 130    } else {
 131       *x = reply->x;
 132       *y = reply->y;
 133       *w = reply->width;
 134       *h = reply->height;
 135       ret = true;
 136    }
 137    free(reply);
 138    return ret;
 139 }
 140
 141 static void
 142 swrastGetDrawableInfo(__DRIdrawable * draw,
 143                       int *x, int *y, int *w, int *h,
 144                       void *loaderPrivate)
 145 {
 146    *x = *y = *w = *h = 0;
 147    x11_get_drawable_info(draw, x, y, w, h, loaderPrivate);
 148 }
 149
 150 static void
 151 swrastPutImage(__DRIdrawable * draw, int op,
 152                int x, int y, int w, int h,
 153                char *data, void *loaderPrivate)
 154 {
 155    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 156    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 157
 158    xcb_gcontext_t gc;
 159
 160    switch (op) {
 161    case __DRI_SWRAST_IMAGE_OP_DRAW:
 162       gc = dri2_surf->gc;
 163       break;
 164    case __DRI_SWRAST_IMAGE_OP_SWAP:
 165       gc = dri2_surf->swapgc;
 166       break;
 167    default:
 168       return;
 169    }
 170
 171    xcb_put_image(dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP, dri2_surf->drawable,
 172                  gc, w, h, x, y, 0, dri2_surf->depth,
 173                  w*h*dri2_surf->bytes_per_pixel, (const uint8_t *)data);
 174 }
 175
 176 static void
 177 swrastGetImage(__DRIdrawable * read,
 178                int x, int y, int w, int h,
 179                char *data, void *loaderPrivate)
 180 {
 181    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 182    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 183
 184    xcb_get_image_cookie_t cookie;
 185    xcb_get_image_reply_t *reply;
 186    xcb_generic_error_t *error;
 187
 188    cookie = xcb_get_image (dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
 189                            dri2_surf->drawable, x, y, w, h, ~0);
 190    reply = xcb_get_image_reply (dri2_dpy->conn, cookie, &error);
 191    if (reply == NULL)
 192       return;
 193
 194    if (error != NULL) {
 195       _eglLog(_EGL_WARNING, "error in xcb_get_image");
 196       free(error);
 197    } else {
 198       uint32_t bytes = xcb_get_image_data_length(reply);
 199       uint8_t *idata = xcb_get_image_data(reply);
 200       memcpy(data, idata, bytes);
 201    }
 202    free(reply);
 203 }
 204
 205
 206 static xcb_screen_t *
 207 get_xcb_screen(xcb_screen_iterator_t iter, int screen)
 208 {
 209     for (; iter.rem; --screen, xcb_screen_next(&iter))
 210         if (screen == 0)
 211             return iter.data;
 212
 213     return NULL;
 214 }
 215
 216 static xcb_visualtype_t *
 217 get_xcb_visualtype_for_depth(struct dri2_egl_display *dri2_dpy, int depth)
 218 {
 219    xcb_visualtype_iterator_t visual_iter;
 220    xcb_screen_t *screen = dri2_dpy->screen;
 221    xcb_depth_iterator_t depth_iter = xcb_screen_allowed_depths_iterator(screen);
 222
 223    for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
 224       if (depth_iter.data->depth != depth)
 225          continue;
 226
 227       visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
 228       if (visual_iter.rem)
 229          return visual_iter.data;
 230    }
 231
 232    return NULL;
 233 }
 234
 235 /* Get red channel mask for given depth. */
 236 unsigned int
 237 dri2_x11_get_red_mask_for_depth(struct dri2_egl_display *dri2_dpy, int depth)
 238 {
 239    xcb_visualtype_t *visual = get_xcb_visualtype_for_depth(dri2_dpy, depth);
 240
 241    if (visual)
 242       return visual->red_mask;
 243
 244    return 0;
 245 }
 246
 247 /**
 248  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 249  */
 250 static _EGLSurface *
 251 dri2_x11_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 252                         _EGLConfig *conf, void *native_surface,
 253                         const EGLint *attrib_list)
 254 {
 255    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 256    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 257    struct dri2_egl_surface *dri2_surf;
 258    xcb_get_geometry_cookie_t cookie;
 259    xcb_get_geometry_reply_t *reply;
 260    xcb_generic_error_t *error;
 261    const __DRIconfig *config;
 262
 263    (void) drv;
 264
 265    dri2_surf = calloc(1, sizeof *dri2_surf);
 266    if (!dri2_surf) {
 267       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 268       return NULL;
 269    }
 270
 271    if (!dri2_init_surface(&dri2_surf->base, disp, type, conf, attrib_list,
 272                           false, native_surface))
 273       goto cleanup_surf;
 274
 275    dri2_surf->region = XCB_NONE;
 276    if (type == EGL_PBUFFER_BIT) {
 277       dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
 278       xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
 279                        dri2_surf->drawable, dri2_dpy->screen->root,
 280                         dri2_surf->base.Width, dri2_surf->base.Height);
 281    } else {
 282       STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_surface));
 283       dri2_surf->drawable = (uintptr_t) native_surface;
 284    }
 285
 286    config = dri2_get_dri_config(dri2_conf, type,
 287                                 dri2_surf->base.GLColorspace);
 288
 289    if (!config) {
 290       _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
 291       goto cleanup_pixmap;
 292    }
 293
 294    if (!dri2_create_drawable(dri2_dpy, config, dri2_surf, dri2_surf))
 295       goto cleanup_pixmap;
 296
 297    if (type != EGL_PBUFFER_BIT) {
 298       cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 299       reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 300       if (error != NULL) {
 301          if (error->error_code == BadAlloc)
 302             _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 303          else if (type == EGL_WINDOW_BIT)
 304             _eglError(EGL_BAD_NATIVE_WINDOW, "xcb_get_geometry");
 305          else
 306             _eglError(EGL_BAD_NATIVE_PIXMAP, "xcb_get_geometry");
 307          free(error);
 308          goto cleanup_dri_drawable;
 309       } else if (reply == NULL) {
 310          _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 311          goto cleanup_dri_drawable;
 312       }
 313
 314       dri2_surf->base.Width = reply->width;
 315       dri2_surf->base.Height = reply->height;
 316       dri2_surf->depth = reply->depth;
 317       free(reply);
 318    }
 319
 320    if (dri2_dpy->dri2) {
 321       xcb_void_cookie_t cookie;
 322       int conn_error;
 323
 324       cookie = xcb_dri2_create_drawable_checked(dri2_dpy->conn,
 325                                                 dri2_surf->drawable);
 326       error = xcb_request_check(dri2_dpy->conn, cookie);
 327       conn_error = xcb_connection_has_error(dri2_dpy->conn);
 328       if (conn_error || error != NULL) {
 329          if (type == EGL_PBUFFER_BIT || conn_error || error->error_code == BadAlloc)
 330             _eglError(EGL_BAD_ALLOC, "xcb_dri2_create_drawable_checked");
 331          else if (type == EGL_WINDOW_BIT)
 332             _eglError(EGL_BAD_NATIVE_WINDOW,
 333                       "xcb_dri2_create_drawable_checked");
 334          else
 335             _eglError(EGL_BAD_NATIVE_PIXMAP,
 336                       "xcb_dri2_create_drawable_checked");
 337          free(error);
 338          goto cleanup_dri_drawable;
 339       }
 340    } else {
 341       if (type == EGL_PBUFFER_BIT) {
 342          dri2_surf->depth = _eglGetConfigKey(conf, EGL_BUFFER_SIZE);
 343       }
 344       swrastCreateDrawable(dri2_dpy, dri2_surf);
 345    }
 346
 347    /* we always copy the back buffer to front */
 348    dri2_surf->base.PostSubBufferSupportedNV = EGL_TRUE;
 349
 350    return &dri2_surf->base;
 351
 352  cleanup_dri_drawable:
 353    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 354  cleanup_pixmap:
 355    if (type == EGL_PBUFFER_BIT)
 356       xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
 357  cleanup_surf:
 358    free(dri2_surf);
 359
 360    return NULL;
 361 }
 362
 363 /**
 364  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 365  */
 366 static _EGLSurface *
 367 dri2_x11_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 368                                _EGLConfig *conf, void *native_window,
 369                                const EGLint *attrib_list)
 370 {
 371    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 372    _EGLSurface *surf;
 373
 374    surf = dri2_x11_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 375                                   native_window, attrib_list);
 376    if (surf != NULL) {
 377       /* When we first create the DRI2 drawable, its swap interval on the
 378        * server side is 1.
 379        */
 380       surf->SwapInterval = 1;
 381
 382       /* Override that with a driconf-set value. */
 383       dri2_x11_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 384    }
 385
 386    return surf;
 387 }
 388
 389 static _EGLSurface *
 390 dri2_x11_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 391                                _EGLConfig *conf, void *native_pixmap,
 392                                const EGLint *attrib_list)
 393 {
 394    return dri2_x11_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
 395                                   native_pixmap, attrib_list);
 396 }
 397
 398 static _EGLSurface *
 399 dri2_x11_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 400                                 _EGLConfig *conf, const EGLint *attrib_list)
 401 {
 402    return dri2_x11_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 403                                   NULL, attrib_list);
 404 }
 405
 406 static EGLBoolean
 407 dri2_x11_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 408 {
 409    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 410    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 411
 412    (void) drv;
 413
 414    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 415
 416    if (dri2_dpy->dri2) {
 417       xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
 418    } else {
 419       assert(dri2_dpy->swrast);
 420       swrastDestroyDrawable(dri2_dpy, dri2_surf);
 421    }
 422
 423    if (surf->Type == EGL_PBUFFER_BIT)
 424       xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
 425
 426    dri2_fini_surface(surf);
 427    free(surf);
 428
 429    return EGL_TRUE;
 430 }
 431
 432 /**
 433  * Function utilizes swrastGetDrawableInfo to get surface
 434  * geometry from x server and calls default query surface
 435  * implementation that returns the updated values.
 436  *
 437  * In case of errors we still return values that we currently
 438  * have.
 439  */
 440 static EGLBoolean
 441 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *disp,
 442                    _EGLSurface *surf, EGLint attribute,
 443                    EGLint *value)
 444 {
 445    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 446    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 447    int x, y, w, h;
 448
 449    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
 450
 451    switch (attribute) {
 452    case EGL_WIDTH:
 453    case EGL_HEIGHT:
 454       if (x11_get_drawable_info(drawable, &x, &y, &w, &h, dri2_surf)) {
 455          surf->Width = w;
 456          surf->Height = h;
 457       }
 458       break;
 459    default:
 460       break;
 461    }
 462    return _eglQuerySurface(drv, disp, surf, attribute, value);
 463 }
 464
 465 /**
 466  * Process list of buffer received from the server
 467  *
 468  * Processes the list of buffers received in a reply from the server to either
 469  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 470  */
 471 static void
 472 dri2_x11_process_buffers(struct dri2_egl_surface *dri2_surf,
 473                          xcb_dri2_dri2_buffer_t *buffers, unsigned count)
 474 {
 475    struct dri2_egl_display *dri2_dpy =
 476       dri2_egl_display(dri2_surf->base.Resource.Display);
 477    xcb_rectangle_t rectangle;
 478
 479    dri2_surf->have_fake_front = false;
 480
 481    /* This assumes the DRI2 buffer attachment tokens matches the
 482     * __DRIbuffer tokens. */
 483    for (unsigned i = 0; i < count; i++) {
 484       dri2_surf->buffers[i].attachment = buffers[i].attachment;
 485       dri2_surf->buffers[i].name = buffers[i].name;
 486       dri2_surf->buffers[i].pitch = buffers[i].pitch;
 487       dri2_surf->buffers[i].cpp = buffers[i].cpp;
 488       dri2_surf->buffers[i].flags = buffers[i].flags;
 489
 490       /* We only use the DRI drivers single buffer configs.  This
 491        * means that if we try to render to a window, DRI2 will give us
 492        * the fake front buffer, which we'll use as a back buffer.
 493        * Note that EGL doesn't require that several clients rendering
 494        * to the same window must see the same aux buffers. */
 495       if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 496          dri2_surf->have_fake_front = true;
 497    }
 498
 499    if (dri2_surf->region != XCB_NONE)
 500       xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
 501
 502    rectangle.x = 0;
 503    rectangle.y = 0;
 504    rectangle.width = dri2_surf->base.Width;
 505    rectangle.height = dri2_surf->base.Height;
 506    dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
 507    xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
 508 }
 509
 510 static __DRIbuffer *
 511 dri2_x11_get_buffers(__DRIdrawable * driDrawable,
 512                      int *width, int *height,
 513                      unsigned int *attachments, int count,
 514                      int *out_count, void *loaderPrivate)
 515 {
 516    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 517    struct dri2_egl_display *dri2_dpy =
 518       dri2_egl_display(dri2_surf->base.Resource.Display);
 519    xcb_dri2_dri2_buffer_t *buffers;
 520    xcb_dri2_get_buffers_reply_t *reply;
 521    xcb_dri2_get_buffers_cookie_t cookie;
 522
 523    (void) driDrawable;
 524
 525    cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 526                                             dri2_surf->drawable,
 527                                             count, count, attachments);
 528    reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
 529    if (reply == NULL)
 530       return NULL;
 531    buffers = xcb_dri2_get_buffers_buffers (reply);
 532    if (buffers == NULL)
 533       return NULL;
 534
 535    *out_count = reply->count;
 536    dri2_surf->base.Width = *width = reply->width;
 537    dri2_surf->base.Height = *height = reply->height;
 538    dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
 539
 540    free(reply);
 541
 542    return dri2_surf->buffers;
 543 }
 544
 545 static __DRIbuffer *
 546 dri2_x11_get_buffers_with_format(__DRIdrawable * driDrawable,
 547                                  int *width, int *height,
 548                                  unsigned int *attachments, int count,
 549                                  int *out_count, void *loaderPrivate)
 550 {
 551    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 552    struct dri2_egl_display *dri2_dpy =
 553       dri2_egl_display(dri2_surf->base.Resource.Display);
 554    xcb_dri2_dri2_buffer_t *buffers;
 555    xcb_dri2_get_buffers_with_format_reply_t *reply;
 556    xcb_dri2_get_buffers_with_format_cookie_t cookie;
 557    xcb_dri2_attach_format_t *format_attachments;
 558
 559    (void) driDrawable;
 560
 561    format_attachments = (xcb_dri2_attach_format_t *) attachments;
 562    cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
 563                                                         dri2_surf->drawable,
 564                                                         count, count,
 565                                                         format_attachments);
 566
 567    reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
 568                                                    cookie, NULL);
 569    if (reply == NULL)
 570       return NULL;
 571
 572    buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
 573    dri2_surf->base.Width = *width = reply->width;
 574    dri2_surf->base.Height = *height = reply->height;
 575    *out_count = reply->count;
 576    dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
 577
 578    free(reply);
 579
 580    return dri2_surf->buffers;
 581 }
 582
 583 static void
 584 dri2_x11_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 585 {
 586    (void) driDrawable;
 587
 588    /* FIXME: Does EGL support front buffer rendering at all? */
 589
 590 #if 0
 591    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 592
 593    dri2WaitGL(dri2_surf);
 594 #else
 595    (void) loaderPrivate;
 596 #endif
 597 }
 598
 599 static int
 600 dri2_x11_do_authenticate(struct dri2_egl_display *dri2_dpy, uint32_t id)
 601 {
 602    xcb_dri2_authenticate_reply_t *authenticate;
 603    xcb_dri2_authenticate_cookie_t authenticate_cookie;
 604    int ret = 0;
 605
 606    authenticate_cookie =
 607       xcb_dri2_authenticate_unchecked(dri2_dpy->conn, dri2_dpy->screen->root, id);
 608    authenticate =
 609       xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
 610
 611    if (authenticate == NULL || !authenticate->authenticated)
 612       ret = -1;
 613
 614    free(authenticate);
 615
 616    return ret;
 617 }
 618
 619 static EGLBoolean
 620 dri2_x11_local_authenticate(struct dri2_egl_display *dri2_dpy)
 621 {
 622 #ifdef HAVE_LIBDRM
 623    drm_magic_t magic;
 624
 625    if (drmGetMagic(dri2_dpy->fd, &magic)) {
 626       _eglLog(_EGL_WARNING, "DRI2: failed to get drm magic");
 627       return EGL_FALSE;
 628    }
 629
 630    if (dri2_x11_do_authenticate(dri2_dpy, magic) < 0) {
 631       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 632       return EGL_FALSE;
 633    }
 634 #endif
 635    return EGL_TRUE;
 636 }
 637
 638 static EGLBoolean
 639 dri2_x11_connect(struct dri2_egl_display *dri2_dpy)
 640 {
 641    xcb_xfixes_query_version_reply_t *xfixes_query;
 642    xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
 643    xcb_dri2_query_version_reply_t *dri2_query;
 644    xcb_dri2_query_version_cookie_t dri2_query_cookie;
 645    xcb_dri2_connect_reply_t *connect;
 646    xcb_dri2_connect_cookie_t connect_cookie;
 647    xcb_generic_error_t *error;
 648    char *driver_name, *loader_driver_name, *device_name;
 649    const xcb_query_extension_reply_t *extension;
 650
 651    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
 652    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
 653
 654    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_xfixes_id);
 655    if (!(extension && extension->present))
 656       return EGL_FALSE;
 657
 658    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_dri2_id);
 659    if (!(extension && extension->present))
 660       return EGL_FALSE;
 661
 662    xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
 663                                                   XCB_XFIXES_MAJOR_VERSION,
 664                                                   XCB_XFIXES_MINOR_VERSION);
 665
 666    dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
 667                                                XCB_DRI2_MAJOR_VERSION,
 668                                                XCB_DRI2_MINOR_VERSION);
 669
 670    connect_cookie = xcb_dri2_connect_unchecked(dri2_dpy->conn, dri2_dpy->screen->root,
 671                                    XCB_DRI2_DRIVER_TYPE_DRI);
 672
 673    xfixes_query =
 674       xcb_xfixes_query_version_reply (dri2_dpy->conn,
 675                                       xfixes_query_cookie, &error);
 676    if (xfixes_query == NULL ||
 677        error != NULL || xfixes_query->major_version < 2) {
 678       _eglLog(_EGL_WARNING, "DRI2: failed to query xfixes version");
 679       free(error);
 680       free(xfixes_query);
 681       return EGL_FALSE;
 682    }
 683    free(xfixes_query);
 684
 685    dri2_query =
 686       xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
 687    if (dri2_query == NULL || error != NULL) {
 688       _eglLog(_EGL_WARNING, "DRI2: failed to query version");
 689       free(error);
 690       return EGL_FALSE;
 691    }
 692    dri2_dpy->dri2_major = dri2_query->major_version;
 693    dri2_dpy->dri2_minor = dri2_query->minor_version;
 694    free(dri2_query);
 695
 696    connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
 697    if (connect == NULL ||
 698        connect->driver_name_length + connect->device_name_length == 0) {
 699       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 700       return EGL_FALSE;
 701    }
 702
 703    device_name = xcb_dri2_connect_device_name (connect);
 704
 705    dri2_dpy->fd = loader_open_device(device_name);
 706    if (dri2_dpy->fd == -1) {
 707       _eglLog(_EGL_WARNING,
 708               "DRI2: could not open %s (%s)", device_name, strerror(errno));
 709       free(connect);
 710       return EGL_FALSE;
 711    }
 712
 713    if (!dri2_x11_local_authenticate(dri2_dpy)) {
 714       close(dri2_dpy->fd);
 715       free(connect);
 716       return EGL_FALSE;
 717    }
 718
 719    driver_name = xcb_dri2_connect_driver_name (connect);
 720
 721    /* If Mesa knows about the appropriate driver for this fd, then trust it.
 722     * Otherwise, default to the server's value.
 723     */
 724    loader_driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
 725    if (loader_driver_name) {
 726       dri2_dpy->driver_name = loader_driver_name;
 727    } else {
 728       dri2_dpy->driver_name =
 729          strndup(driver_name,
 730                  xcb_dri2_connect_driver_name_length(connect));
 731    }
 732
 733    if (dri2_dpy->driver_name == NULL) {
 734       close(dri2_dpy->fd);
 735       free(connect);
 736       return EGL_FALSE;
 737    }
 738
 739 #ifdef HAVE_WAYLAND_PLATFORM
 740    dri2_dpy->device_name =
 741       strndup(device_name,
 742               xcb_dri2_connect_device_name_length(connect));
 743 #endif
 744
 745    free(connect);
 746
 747    return EGL_TRUE;
 748 }
 749
 750 static int
 751 dri2_x11_authenticate(_EGLDisplay *disp, uint32_t id)
 752 {
 753    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 754
 755    return dri2_x11_do_authenticate(dri2_dpy, id);
 756 }
 757
 758 static EGLBoolean
 759 dri2_x11_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
 760                                  _EGLDisplay *disp, bool supports_preserved)
 761 {
 762    xcb_depth_iterator_t d;
 763    xcb_visualtype_t *visuals;
 764    int config_count = 0;
 765    EGLint surface_type;
 766
 767    d = xcb_screen_allowed_depths_iterator(dri2_dpy->screen);
 768
 769    surface_type =
 770       EGL_WINDOW_BIT |
 771       EGL_PIXMAP_BIT |
 772       EGL_PBUFFER_BIT;
 773
 774    if (supports_preserved)
 775       surface_type |= EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
 776
 777    while (d.rem > 0) {
 778       EGLBoolean class_added[6] = { 0, };
 779
 780       visuals = xcb_depth_visuals(d.data);
 781
 782       for (int i = 0; i < xcb_depth_visuals_length(d.data); i++) {
 783          if (class_added[visuals[i]._class])
 784             continue;
 785
 786          class_added[visuals[i]._class] = EGL_TRUE;
 787
 788          for (int j = 0; dri2_dpy->driver_configs[j]; j++) {
 789             struct dri2_egl_config *dri2_conf;
 790             const __DRIconfig *config = dri2_dpy->driver_configs[j];
 791
 792             const EGLint config_attrs[] = {
 793                     EGL_NATIVE_VISUAL_ID,    visuals[i].visual_id,
 794                     EGL_NATIVE_VISUAL_TYPE,  visuals[i]._class,
 795                     EGL_NONE
 796             };
 797
 798             int rgba_shifts[4] = {
 799                ffs(visuals[i].red_mask) - 1,
 800                ffs(visuals[i].green_mask) - 1,
 801                ffs(visuals[i].blue_mask) - 1,
 802                -1,
 803             };
 804
 805             unsigned int rgba_sizes[4] = {
 806                util_bitcount(visuals[i].red_mask),
 807                util_bitcount(visuals[i].green_mask),
 808                util_bitcount(visuals[i].blue_mask),
 809                0,
 810             };
 811
 812             dri2_conf = dri2_add_config(disp, config, config_count + 1,
 813                                         surface_type, config_attrs,
 814                                         rgba_shifts, rgba_sizes);
 815             if (dri2_conf)
 816                if (dri2_conf->base.ConfigID == config_count + 1)
 817                   config_count++;
 818
 819             /* Allows RGB visuals to match a 32-bit RGBA EGLConfig.
 820              * Otherwise it will only match a 32-bit RGBA visual.  On a
 821              * composited window manager on X11, this will make all of the
 822              * EGLConfigs with destination alpha get blended by the
 823              * compositor.  This is probably not what the application
 824              * wants... especially on drivers that only have 32-bit RGBA
 825              * EGLConfigs! */
 826             unsigned int rgba_mask = ~(visuals[i].red_mask |
 827                                        visuals[i].green_mask |
 828                                        visuals[i].blue_mask);
 829             rgba_shifts[3] = ffs(rgba_mask) - 1;
 830             rgba_sizes[3] = util_bitcount(rgba_mask);
 831             dri2_conf = dri2_add_config(disp, config, config_count + 1,
 832                                         surface_type, config_attrs,
 833                                         rgba_shifts, rgba_sizes);
 834             if (dri2_conf)
 835                if (dri2_conf->base.ConfigID == config_count + 1)
 836                   config_count++;
 837          }
 838       }
 839
 840       xcb_depth_next(&d);
 841    }
 842
 843    if (!config_count) {
 844       _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
 845       return EGL_FALSE;
 846    }
 847
 848    return EGL_TRUE;
 849 }
 850
 851 static EGLBoolean
 852 dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
 853                  _EGLSurface *draw, xcb_xfixes_region_t region)
 854 {
 855    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 856    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 857    enum xcb_dri2_attachment_t render_attachment;
 858    xcb_dri2_copy_region_cookie_t cookie;
 859
 860    /* No-op for a pixmap or pbuffer surface */
 861    if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
 862       return EGL_TRUE;
 863
 864    dri2_dpy->flush->flush(dri2_surf->dri_drawable);
 865
 866    if (dri2_surf->have_fake_front)
 867       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
 868    else
 869       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
 870
 871    cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
 872                                            dri2_surf->drawable,
 873                                            region,
 874                                            XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
 875                                            render_attachment);
 876    free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
 877
 878    return EGL_TRUE;
 879 }
 880
 881 static int64_t
 882 dri2_x11_swap_buffers_msc(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 883                           int64_t msc, int64_t divisor, int64_t remainder)
 884 {
 885    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 886    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 887    uint32_t msc_hi = msc >> 32;
 888    uint32_t msc_lo = msc & 0xffffffff;
 889    uint32_t divisor_hi = divisor >> 32;
 890    uint32_t divisor_lo = divisor & 0xffffffff;
 891    uint32_t remainder_hi = remainder >> 32;
 892    uint32_t remainder_lo = remainder & 0xffffffff;
 893    xcb_dri2_swap_buffers_cookie_t cookie;
 894    xcb_dri2_swap_buffers_reply_t *reply;
 895    int64_t swap_count = -1;
 896
 897    if (draw->SwapBehavior == EGL_BUFFER_PRESERVED || !dri2_dpy->swap_available) {
 898       swap_count = dri2_copy_region(drv, disp, draw, dri2_surf->region) ? 0 : -1;
 899    } else {
 900       dri2_flush_drawable_for_swapbuffers(disp, draw);
 901
 902       cookie = xcb_dri2_swap_buffers_unchecked(dri2_dpy->conn,
 903                                                dri2_surf->drawable, msc_hi,
 904                                                msc_lo, divisor_hi, divisor_lo,
 905                                                remainder_hi, remainder_lo);
 906
 907       reply = xcb_dri2_swap_buffers_reply(dri2_dpy->conn, cookie, NULL);
 908
 909       if (reply) {
 910          swap_count = combine_u32_into_u64(reply->swap_hi, reply->swap_lo);
 911          free(reply);
 912       }
 913    }
 914
 915    /* Since we aren't watching for the server's invalidate events like we're
 916     * supposed to (due to XCB providing no mechanism for filtering the events
 917     * the way xlib does), and SwapBuffers is a common cause of invalidate
 918     * events, just shove one down to the driver, even though we haven't told
 919     * the driver that we're the kind of loader that provides reliable
 920     * invalidate events.  This causes the driver to request buffers again at
 921     * its next draw, so that we get the correct buffers if a pageflip
 922     * happened.  The driver should still be using the viewport hack to catch
 923     * window resizes.
 924     */
 925    if (dri2_dpy->flush->base.version >= 3 && dri2_dpy->flush->invalidate)
 926       dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 927
 928    return swap_count;
 929 }
 930
 931 static EGLBoolean
 932 dri2_x11_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 933 {
 934    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 935    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 936
 937    if (!dri2_dpy->flush) {
 938       dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
 939       return EGL_TRUE;
 940    }
 941
 942    if (dri2_x11_swap_buffers_msc(drv, disp, draw, 0, 0, 0) == -1) {
 943       /* Swap failed with a window drawable. */
 944       return _eglError(EGL_BAD_NATIVE_WINDOW, __func__);
 945    }
 946    return EGL_TRUE;
 947 }
 948
 949 static EGLBoolean
 950 dri2_x11_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp,
 951                              _EGLSurface *draw,
 952                              EGLint numRects, const EGLint *rects)
 953 {
 954    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 955    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 956    EGLBoolean ret;
 957    xcb_xfixes_region_t region;
 958    xcb_rectangle_t rectangles[16];
 959
 960    if (numRects > (int)ARRAY_SIZE(rectangles))
 961       return dri2_copy_region(drv, disp, draw, dri2_surf->region);
 962
 963    for (int i = 0; i < numRects; i++) {
 964       rectangles[i].x = rects[i * 4];
 965       rectangles[i].y = dri2_surf->base.Height - rects[i * 4 + 1] - rects[i * 4 + 3];
 966       rectangles[i].width = rects[i * 4 + 2];
 967       rectangles[i].height = rects[i * 4 + 3];
 968    }
 969
 970    region = xcb_generate_id(dri2_dpy->conn);
 971    xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles);
 972    ret = dri2_copy_region(drv, disp, draw, region);
 973    xcb_xfixes_destroy_region(dri2_dpy->conn, region);
 974
 975    return ret;
 976 }
 977
 978 static EGLBoolean
 979 dri2_x11_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 980                      EGLint x, EGLint y, EGLint width, EGLint height)
 981 {
 982    const EGLint rect[4] = { x, y, width, height };
 983
 984    if (x < 0 || y < 0 || width < 0 || height < 0)
 985       _eglError(EGL_BAD_PARAMETER, "eglPostSubBufferNV");
 986
 987    return dri2_x11_swap_buffers_region(drv, disp, draw, 1, rect);
 988 }
 989
 990 static EGLBoolean
 991 dri2_x11_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 992                        EGLint interval)
 993 {
 994    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 995    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 996
 997    if (dri2_dpy->swap_available)
 998       xcb_dri2_swap_interval(dri2_dpy->conn, dri2_surf->drawable, interval);
 999
1000    return EGL_TRUE;
1001 }
1002
1003 static EGLBoolean
1004 dri2_x11_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1005                       void *native_pixmap_target)
1006 {
1007    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1008    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1009    xcb_gcontext_t gc;
1010    xcb_pixmap_t target;
1011
1012    STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_pixmap_target));
1013    target = (uintptr_t) native_pixmap_target;
1014
1015    (void) drv;
1016
1017    dri2_dpy->flush->flush(dri2_surf->dri_drawable);
1018
1019    gc = xcb_generate_id(dri2_dpy->conn);
1020    xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
1021    xcb_copy_area(dri2_dpy->conn,
1022                   dri2_surf->drawable,
1023                   target,
1024                   gc,
1025                   0, 0,
1026                   0, 0,
1027                   dri2_surf->base.Width,
1028                   dri2_surf->base.Height);
1029    xcb_free_gc(dri2_dpy->conn, gc);
1030
1031    return EGL_TRUE;
1032 }
1033
1034 uint32_t
1035 dri2_format_for_depth(struct dri2_egl_display *dri2_dpy, uint32_t depth)
1036 {
1037    switch (depth) {
1038    case 16:
1039       return __DRI_IMAGE_FORMAT_RGB565;
1040    case 24:
1041       return __DRI_IMAGE_FORMAT_XRGB8888;
1042    case 30:
1043       /* Different preferred formats for different hw */
1044       if (dri2_x11_get_red_mask_for_depth(dri2_dpy, 30) == 0x3ff)
1045          return __DRI_IMAGE_FORMAT_XBGR2101010;
1046       else
1047          return __DRI_IMAGE_FORMAT_XRGB2101010;
1048    case 32:
1049       return __DRI_IMAGE_FORMAT_ARGB8888;
1050    default:
1051       return __DRI_IMAGE_FORMAT_NONE;
1052    }
1053 }
1054
1055 static _EGLImage *
1056 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
1057                              EGLClientBuffer buffer, const EGLint *attr_list)
1058 {
1059    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1060    struct dri2_egl_image *dri2_img;
1061    unsigned int attachments[1];
1062    xcb_drawable_t drawable;
1063    xcb_dri2_get_buffers_cookie_t buffers_cookie;
1064    xcb_dri2_get_buffers_reply_t *buffers_reply;
1065    xcb_dri2_dri2_buffer_t *buffers;
1066    xcb_get_geometry_cookie_t geometry_cookie;
1067    xcb_get_geometry_reply_t *geometry_reply;
1068    xcb_generic_error_t *error;
1069    int stride, format;
1070
1071    (void) ctx;
1072
1073    drawable = (xcb_drawable_t) (uintptr_t) buffer;
1074    xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
1075    attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
1076    buffers_cookie =
1077       xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
1078                                       drawable, 1, 1, attachments);
1079    geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
1080    buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
1081                                                buffers_cookie, NULL);
1082    if (buffers_reply == NULL)
1083      return NULL;
1084
1085    buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
1086    if (buffers == NULL) {
1087       return NULL;
1088    }
1089
1090    geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
1091                                             geometry_cookie, &error);
1092    if (geometry_reply == NULL || error != NULL) {
1093       _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
1094       free(error);
1095       free(buffers_reply);
1096       return NULL;
1097    }
1098
1099    format = dri2_format_for_depth(dri2_dpy, geometry_reply->depth);
1100    if (format == __DRI_IMAGE_FORMAT_NONE) {
1101       _eglError(EGL_BAD_PARAMETER,
1102                 "dri2_create_image_khr: unsupported pixmap depth");
1103       free(buffers_reply);
1104       free(geometry_reply);
1105       return NULL;
1106    }
1107
1108    dri2_img = malloc(sizeof *dri2_img);
1109    if (!dri2_img) {
1110       free(buffers_reply);
1111       free(geometry_reply);
1112       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1113       return EGL_NO_IMAGE_KHR;
1114    }
1115
1116    _eglInitImage(&dri2_img->base, disp);
1117
1118    stride = buffers[0].pitch / buffers[0].cpp;
1119    dri2_img->dri_image =
1120       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1121                                            buffers_reply->width,
1122                                            buffers_reply->height,
1123                                            format,
1124                                            buffers[0].name,
1125                                            stride,
1126                                            dri2_img);
1127
1128    free(buffers_reply);
1129    free(geometry_reply);
1130
1131    return &dri2_img->base;
1132 }
1133
1134 static _EGLImage *
1135 dri2_x11_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1136                           _EGLContext *ctx, EGLenum target,
1137                           EGLClientBuffer buffer, const EGLint *attr_list)
1138 {
1139    (void) drv;
1140
1141    switch (target) {
1142    case EGL_NATIVE_PIXMAP_KHR:
1143       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
1144    default:
1145       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
1146    }
1147 }
1148
1149 static EGLBoolean
1150 dri2_x11_get_sync_values(_EGLDisplay *display, _EGLSurface *surface,
1151                          EGLuint64KHR *ust, EGLuint64KHR *msc,
1152                          EGLuint64KHR *sbc)
1153 {
1154    struct dri2_egl_display *dri2_dpy = dri2_egl_display(display);
1155    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
1156    xcb_dri2_get_msc_cookie_t cookie;
1157    xcb_dri2_get_msc_reply_t *reply;
1158
1159    cookie = xcb_dri2_get_msc(dri2_dpy->conn, dri2_surf->drawable);
1160    reply = xcb_dri2_get_msc_reply(dri2_dpy->conn, cookie, NULL);
1161
1162    if (!reply)
1163       return _eglError(EGL_BAD_ACCESS, __func__);
1164
1165    *ust = ((EGLuint64KHR) reply->ust_hi << 32) | reply->ust_lo;
1166    *msc = ((EGLuint64KHR) reply->msc_hi << 32) | reply->msc_lo;
1167    *sbc = ((EGLuint64KHR) reply->sbc_hi << 32) | reply->sbc_lo;
1168    free(reply);
1169
1170    return EGL_TRUE;
1171 }
1172
1173 static const struct dri2_egl_display_vtbl dri2_x11_swrast_display_vtbl = {
1174    .authenticate = NULL,
1175    .create_window_surface = dri2_x11_create_window_surface,
1176    .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1177    .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1178    .destroy_surface = dri2_x11_destroy_surface,
1179    .create_image = dri2_create_image_khr,
1180    .swap_buffers = dri2_x11_swap_buffers,
1181    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1182    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1183    /* XXX: should really implement this since X11 has pixmaps */
1184    .copy_buffers = dri2_fallback_copy_buffers,
1185    .query_buffer_age = dri2_fallback_query_buffer_age,
1186    .query_surface = dri2_query_surface,
1187    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1188    .get_sync_values = dri2_fallback_get_sync_values,
1189    .get_dri_drawable = dri2_surface_get_dri_drawable,
1190 };
1191
1192 static const struct dri2_egl_display_vtbl dri2_x11_display_vtbl = {
1193    .authenticate = dri2_x11_authenticate,
1194    .create_window_surface = dri2_x11_create_window_surface,
1195    .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1196    .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1197    .destroy_surface = dri2_x11_destroy_surface,
1198    .create_image = dri2_x11_create_image_khr,
1199    .swap_interval = dri2_x11_swap_interval,
1200    .swap_buffers = dri2_x11_swap_buffers,
1201    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1202    .swap_buffers_region = dri2_x11_swap_buffers_region,
1203    .post_sub_buffer = dri2_x11_post_sub_buffer,
1204    .copy_buffers = dri2_x11_copy_buffers,
1205    .query_buffer_age = dri2_fallback_query_buffer_age,
1206    .query_surface = dri2_query_surface,
1207    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1208    .get_sync_values = dri2_x11_get_sync_values,
1209    .get_dri_drawable = dri2_surface_get_dri_drawable,
1210 };
1211
1212 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1213    .base = { __DRI_SWRAST_LOADER, 1 },
1214
1215    .getDrawableInfo = swrastGetDrawableInfo,
1216    .putImage        = swrastPutImage,
1217    .getImage        = swrastGetImage,
1218 };
1219
1220 static const __DRIextension *swrast_loader_extensions[] = {
1221    &swrast_loader_extension.base,
1222    &image_lookup_extension.base,
1223    NULL,
1224 };
1225
1226 static int
1227 dri2_find_screen_for_display(const _EGLDisplay *disp, int fallback_screen)
1228 {
1229    const EGLAttrib *attr;
1230
1231    for (attr = disp->Options.Attribs; attr; attr += 2) {
1232       if (attr[0] == EGL_PLATFORM_X11_SCREEN_EXT)
1233          return attr[1];
1234    }
1235
1236    return fallback_screen;
1237 }
1238
1239 static EGLBoolean
1240 dri2_get_xcb_connection(_EGLDriver *drv, _EGLDisplay *disp,
1241                         struct dri2_egl_display *dri2_dpy)
1242 {
1243    xcb_screen_iterator_t s;
1244    int screen;
1245    const char *msg;
1246
1247    disp->DriverData = (void *) dri2_dpy;
1248    if (disp->PlatformDisplay == NULL) {
1249       dri2_dpy->conn = xcb_connect(NULL, &screen);
1250       dri2_dpy->own_device = true;
1251       screen = dri2_find_screen_for_display(disp, screen);
1252    } else {
1253       Display *dpy = disp->PlatformDisplay;
1254       dri2_dpy->conn = XGetXCBConnection(dpy);
1255       screen = DefaultScreen(dpy);
1256    }
1257
1258    if (!dri2_dpy->conn || xcb_connection_has_error(dri2_dpy->conn)) {
1259       msg = "xcb_connect failed";
1260       goto disconnect;
1261    }
1262
1263    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
1264    dri2_dpy->screen = get_xcb_screen(s, screen);
1265    if (!dri2_dpy->screen) {
1266       msg = "failed to get xcb screen";
1267       goto disconnect;
1268    }
1269
1270    return EGL_TRUE;
1271 disconnect:
1272    if (disp->PlatformDisplay == NULL)
1273       xcb_disconnect(dri2_dpy->conn);
1274
1275    return _eglError(EGL_BAD_ALLOC, msg);
1276 }
1277
1278 static EGLBoolean
1279 dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1280 {
1281    _EGLDevice *dev;
1282    struct dri2_egl_display *dri2_dpy;
1283
1284    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1285    if (!dri2_dpy)
1286       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1287
1288    dri2_dpy->fd = -1;
1289    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1290       goto cleanup;
1291
1292    dev = _eglAddDevice(dri2_dpy->fd, true);
1293    if (!dev) {
1294       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1295       goto cleanup;
1296    }
1297
1298    disp->Device = dev;
1299
1300    /*
1301     * Every hardware driver_name is set using strdup. Doing the same in
1302     * here will allow is to simply free the memory at dri2_terminate().
1303     */
1304    dri2_dpy->driver_name = strdup("swrast");
1305    if (!dri2_load_driver_swrast(disp))
1306       goto cleanup;
1307
1308    dri2_dpy->loader_extensions = swrast_loader_extensions;
1309
1310    if (!dri2_create_screen(disp))
1311       goto cleanup;
1312
1313    if (!dri2_setup_extensions(disp))
1314       goto cleanup;
1315
1316    dri2_setup_screen(disp);
1317
1318    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
1319       goto cleanup;
1320
1321    /* Fill vtbl last to prevent accidentally calling virtual function during
1322     * initialization.
1323     */
1324    dri2_dpy->vtbl = &dri2_x11_swrast_display_vtbl;
1325
1326    return EGL_TRUE;
1327
1328  cleanup:
1329    dri2_display_destroy(disp);
1330    return EGL_FALSE;
1331 }
1332
1333 static void
1334 dri2_x11_setup_swap_interval(_EGLDisplay *disp)
1335 {
1336    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1337    int arbitrary_max_interval = 1000;
1338
1339    /* default behavior for no SwapBuffers support: no vblank syncing
1340     * either.
1341     */
1342    dri2_dpy->min_swap_interval = 0;
1343    dri2_dpy->max_swap_interval = 0;
1344    dri2_dpy->default_swap_interval = 0;
1345
1346    if (!dri2_dpy->swap_available)
1347       return;
1348
1349    /* If we do have swapbuffers, then we can support pretty much any swap
1350     * interval.
1351     */
1352    dri2_setup_swap_interval(disp, arbitrary_max_interval);
1353 }
1354
1355 #ifdef HAVE_DRI3
1356
1357 static const __DRIextension *dri3_image_loader_extensions[] = {
1358    &dri3_image_loader_extension.base,
1359    &image_lookup_extension.base,
1360    &use_invalidate.base,
1361    &background_callable_extension.base,
1362    NULL,
1363 };
1364
1365 static EGLBoolean
1366 dri2_initialize_x11_dri3(_EGLDriver *drv, _EGLDisplay *disp)
1367 {
1368    _EGLDevice *dev;
1369    struct dri2_egl_display *dri2_dpy;
1370
1371    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1372    if (!dri2_dpy)
1373       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1374
1375    dri2_dpy->fd = -1;
1376    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1377       goto cleanup;
1378
1379    if (!dri3_x11_connect(dri2_dpy))
1380       goto cleanup;
1381
1382    dev = _eglAddDevice(dri2_dpy->fd, false);
1383    if (!dev) {
1384       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1385       goto cleanup;
1386    }
1387
1388    disp->Device = dev;
1389
1390    if (!dri2_load_driver_dri3(disp))
1391       goto cleanup;
1392
1393    dri2_dpy->loader_extensions = dri3_image_loader_extensions;
1394
1395    dri2_dpy->swap_available = true;
1396    dri2_dpy->invalidate_available = true;
1397
1398    if (!dri2_create_screen(disp))
1399       goto cleanup;
1400
1401    if (!dri2_setup_extensions(disp))
1402       goto cleanup;
1403
1404    dri2_setup_screen(disp);
1405
1406    dri2_x11_setup_swap_interval(disp);
1407
1408    if (!dri2_dpy->is_different_gpu)
1409       disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1410    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1411    disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1412    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1413
1414    dri2_set_WL_bind_wayland_display(drv, disp);
1415
1416    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, false))
1417       goto cleanup;
1418
1419    dri2_dpy->loader_dri3_ext.core = dri2_dpy->core;
1420    dri2_dpy->loader_dri3_ext.image_driver = dri2_dpy->image_driver;
1421    dri2_dpy->loader_dri3_ext.flush = dri2_dpy->flush;
1422    dri2_dpy->loader_dri3_ext.tex_buffer = dri2_dpy->tex_buffer;
1423    dri2_dpy->loader_dri3_ext.image = dri2_dpy->image;
1424    dri2_dpy->loader_dri3_ext.config = dri2_dpy->config;
1425
1426    /* Fill vtbl last to prevent accidentally calling virtual function during
1427     * initialization.
1428     */
1429    dri2_dpy->vtbl = &dri3_x11_display_vtbl;
1430
1431    _eglLog(_EGL_INFO, "Using DRI3");
1432
1433    return EGL_TRUE;
1434
1435  cleanup:
1436    dri2_display_destroy(disp);
1437    return EGL_FALSE;
1438 }
1439 #endif
1440
1441 static const __DRIdri2LoaderExtension dri2_loader_extension_old = {
1442    .base = { __DRI_DRI2_LOADER, 2 },
1443
1444    .getBuffers           = dri2_x11_get_buffers,
1445    .flushFrontBuffer     = dri2_x11_flush_front_buffer,
1446    .getBuffersWithFormat = NULL,
1447 };
1448
1449 static const __DRIdri2LoaderExtension dri2_loader_extension = {
1450    .base = { __DRI_DRI2_LOADER, 3 },
1451
1452    .getBuffers           = dri2_x11_get_buffers,
1453    .flushFrontBuffer     = dri2_x11_flush_front_buffer,
1454    .getBuffersWithFormat = dri2_x11_get_buffers_with_format,
1455 };
1456
1457 static const __DRIextension *dri2_loader_extensions_old[] = {
1458    &dri2_loader_extension_old.base,
1459    &image_lookup_extension.base,
1460    &background_callable_extension.base,
1461    NULL,
1462 };
1463
1464 static const __DRIextension *dri2_loader_extensions[] = {
1465    &dri2_loader_extension.base,
1466    &image_lookup_extension.base,
1467    &use_invalidate.base,
1468    &background_callable_extension.base,
1469    NULL,
1470 };
1471
1472 static EGLBoolean
1473 dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp)
1474 {
1475    _EGLDevice *dev;
1476    struct dri2_egl_display *dri2_dpy;
1477
1478    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1479    if (!dri2_dpy)
1480       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1481
1482    dri2_dpy->fd = -1;
1483    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1484       goto cleanup;
1485
1486    if (!dri2_x11_connect(dri2_dpy))
1487       goto cleanup;
1488
1489    dev = _eglAddDevice(dri2_dpy->fd, false);
1490    if (!dev) {
1491       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1492       goto cleanup;
1493    }
1494
1495    disp->Device = dev;
1496
1497    if (!dri2_load_driver(disp))
1498       goto cleanup;
1499
1500    if (dri2_dpy->dri2_minor >= 1)
1501       dri2_dpy->loader_extensions = dri2_loader_extensions;
1502    else
1503       dri2_dpy->loader_extensions = dri2_loader_extensions_old;
1504
1505    dri2_dpy->swap_available = (dri2_dpy->dri2_minor >= 2);
1506    dri2_dpy->invalidate_available = (dri2_dpy->dri2_minor >= 3);
1507
1508    if (!dri2_create_screen(disp))
1509       goto cleanup;
1510
1511    if (!dri2_setup_extensions(disp))
1512       goto cleanup;
1513
1514    dri2_setup_screen(disp);
1515
1516    dri2_x11_setup_swap_interval(disp);
1517
1518    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1519    disp->Extensions.NOK_swap_region = EGL_TRUE;
1520    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1521    disp->Extensions.NV_post_sub_buffer = EGL_TRUE;
1522    disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1523
1524    dri2_set_WL_bind_wayland_display(drv, disp);
1525
1526    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
1527       goto cleanup;
1528
1529    /* Fill vtbl last to prevent accidentally calling virtual function during
1530     * initialization.
1531     */
1532    dri2_dpy->vtbl = &dri2_x11_display_vtbl;
1533
1534    _eglLog(_EGL_INFO, "Using DRI2");
1535
1536    return EGL_TRUE;
1537
1538  cleanup:
1539    dri2_display_destroy(disp);
1540    return EGL_FALSE;
1541 }
1542
1543 EGLBoolean
1544 dri2_initialize_x11(_EGLDriver *drv, _EGLDisplay *disp)
1545 {
1546    EGLBoolean initialized = EGL_FALSE;
1547
1548    if (!disp->Options.ForceSoftware) {
1549 #ifdef HAVE_DRI3
1550       if (!env_var_as_boolean("LIBGL_DRI3_DISABLE", false))
1551          initialized = dri2_initialize_x11_dri3(drv, disp);
1552 #endif
1553
1554       if (!initialized)
1555          initialized = dri2_initialize_x11_dri2(drv, disp);
1556    }
1557
1558    if (!initialized)
1559       initialized = dri2_initialize_x11_swrast(drv, disp);
1560
1561    return initialized;
1562 }
1563
1564 void
1565 dri2_teardown_x11(struct dri2_egl_display *dri2_dpy)
1566 {
1567    if (dri2_dpy->own_device)
1568       xcb_disconnect(dri2_dpy->conn);
1569 }