src/egl/drivers/dri2/platform_x11.c

   1 /*
   2  * Copyright © 2011 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <stdio.h>
  31 #include <limits.h>
  32 #include <dlfcn.h>
  33 #include <fcntl.h>
  34 #include <errno.h>
  35 #include <unistd.h>
  36 #include <xf86drm.h>
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39
  40 #include "egl_dri2.h"
  41
  42 /**
  43  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
  44  */
  45 static _EGLSurface *
  46 dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
  47                     _EGLConfig *conf, EGLNativeWindowType window,
  48                     const EGLint *attrib_list)
  49 {
  50    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
  51    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
  52    struct dri2_egl_surface *dri2_surf;
  53    xcb_get_geometry_cookie_t cookie;
  54    xcb_get_geometry_reply_t *reply;
  55    xcb_screen_iterator_t s;
  56    xcb_generic_error_t *error;
  57
  58    (void) drv;
  59
  60    dri2_surf = malloc(sizeof *dri2_surf);
  61    if (!dri2_surf) {
  62       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
  63       return NULL;
  64    }
  65
  66    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
  67       goto cleanup_surf;
  68
  69    dri2_surf->region = XCB_NONE;
  70    if (type == EGL_PBUFFER_BIT) {
  71       dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
  72       s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
  73       xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
  74                         dri2_surf->drawable, s.data->root,
  75                         dri2_surf->base.Width, dri2_surf->base.Height);
  76    } else {
  77       dri2_surf->drawable = window;
  78    }
  79
  80    dri2_surf->dri_drawable =
  81       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
  82                                             type == EGL_WINDOW_BIT ?
  83                                             dri2_conf->dri_double_config :
  84                                             dri2_conf->dri_single_config,
  85                                             dri2_surf);
  86    if (dri2_surf->dri_drawable == NULL) {
  87       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
  88       goto cleanup_pixmap;
  89    }
  90
  91    xcb_dri2_create_drawable (dri2_dpy->conn, dri2_surf->drawable);
  92
  93    if (type != EGL_PBUFFER_BIT) {
  94       cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
  95       reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
  96       if (reply == NULL || error != NULL) {
  97          _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
  98          free(error);
  99          goto cleanup_dri_drawable;
 100       }
 101
 102       dri2_surf->base.Width = reply->width;
 103       dri2_surf->base.Height = reply->height;
 104       free(reply);
 105    }
 106
 107    return &dri2_surf->base;
 108
 109  cleanup_dri_drawable:
 110    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 111  cleanup_pixmap:
 112    if (type == EGL_PBUFFER_BIT)
 113       xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
 114  cleanup_surf:
 115    free(dri2_surf);
 116
 117    return NULL;
 118 }
 119
 120 /**
 121  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 122  */
 123 static _EGLSurface *
 124 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 125                            _EGLConfig *conf, EGLNativeWindowType window,
 126                            const EGLint *attrib_list)
 127 {
 128    return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 129                               window, attrib_list);
 130 }
 131
 132 static _EGLSurface *
 133 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 134                            _EGLConfig *conf, EGLNativePixmapType pixmap,
 135                            const EGLint *attrib_list)
 136 {
 137    return dri2_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
 138                               pixmap, attrib_list);
 139 }
 140
 141 static _EGLSurface *
 142 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 143                             _EGLConfig *conf, const EGLint *attrib_list)
 144 {
 145    return dri2_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 146                               XCB_WINDOW_NONE, attrib_list);
 147 }
 148
 149 static EGLBoolean
 150 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 151 {
 152    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 153    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 154
 155    (void) drv;
 156
 157    if (!_eglPutSurface(surf))
 158       return EGL_TRUE;
 159
 160    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 161
 162    xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
 163
 164    if (surf->Type == EGL_PBUFFER_BIT)
 165       xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
 166
 167    free(surf);
 168
 169    return EGL_TRUE;
 170 }
 171
 172 /**
 173  * Process list of buffer received from the server
 174  *
 175  * Processes the list of buffers received in a reply from the server to either
 176  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 177  */
 178 static void
 179 dri2_process_buffers(struct dri2_egl_surface *dri2_surf,
 180                      xcb_dri2_dri2_buffer_t *buffers, unsigned count)
 181 {
 182    struct dri2_egl_display *dri2_dpy =
 183       dri2_egl_display(dri2_surf->base.Resource.Display);
 184    xcb_rectangle_t rectangle;
 185    unsigned i;
 186
 187    dri2_surf->buffer_count = count;
 188    dri2_surf->have_fake_front = 0;
 189
 190    /* This assumes the DRI2 buffer attachment tokens matches the
 191     * __DRIbuffer tokens. */
 192    for (i = 0; i < count; i++) {
 193       dri2_surf->buffers[i].attachment = buffers[i].attachment;
 194       dri2_surf->buffers[i].name = buffers[i].name;
 195       dri2_surf->buffers[i].pitch = buffers[i].pitch;
 196       dri2_surf->buffers[i].cpp = buffers[i].cpp;
 197       dri2_surf->buffers[i].flags = buffers[i].flags;
 198
 199       /* We only use the DRI drivers single buffer configs.  This
 200        * means that if we try to render to a window, DRI2 will give us
 201        * the fake front buffer, which we'll use as a back buffer.
 202        * Note that EGL doesn't require that several clients rendering
 203        * to the same window must see the same aux buffers. */
 204       if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 205          dri2_surf->have_fake_front = 1;
 206    }
 207
 208    if (dri2_surf->region != XCB_NONE)
 209       xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
 210
 211    rectangle.x = 0;
 212    rectangle.y = 0;
 213    rectangle.width = dri2_surf->base.Width;
 214    rectangle.height = dri2_surf->base.Height;
 215    dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
 216    xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
 217 }
 218
 219 static __DRIbuffer *
 220 dri2_get_buffers(__DRIdrawable * driDrawable,
 221                 int *width, int *height,
 222                 unsigned int *attachments, int count,
 223                 int *out_count, void *loaderPrivate)
 224 {
 225    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 226    struct dri2_egl_display *dri2_dpy =
 227       dri2_egl_display(dri2_surf->base.Resource.Display);
 228    xcb_dri2_dri2_buffer_t *buffers;
 229    xcb_dri2_get_buffers_reply_t *reply;
 230    xcb_dri2_get_buffers_cookie_t cookie;
 231
 232    (void) driDrawable;
 233
 234    cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 235                                             dri2_surf->drawable,
 236                                             count, count, attachments);
 237    reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
 238    buffers = xcb_dri2_get_buffers_buffers (reply);
 239    if (buffers == NULL)
 240       return NULL;
 241
 242    *out_count = reply->count;
 243    dri2_surf->base.Width = *width = reply->width;
 244    dri2_surf->base.Height = *height = reply->height;
 245    dri2_process_buffers(dri2_surf, buffers, *out_count);
 246
 247    free(reply);
 248
 249    return dri2_surf->buffers;
 250 }
 251
 252 static __DRIbuffer *
 253 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 254                              int *width, int *height,
 255                              unsigned int *attachments, int count,
 256                              int *out_count, void *loaderPrivate)
 257 {
 258    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 259    struct dri2_egl_display *dri2_dpy =
 260       dri2_egl_display(dri2_surf->base.Resource.Display);
 261    xcb_dri2_dri2_buffer_t *buffers;
 262    xcb_dri2_get_buffers_with_format_reply_t *reply;
 263    xcb_dri2_get_buffers_with_format_cookie_t cookie;
 264    xcb_dri2_attach_format_t *format_attachments;
 265
 266    (void) driDrawable;
 267
 268    format_attachments = (xcb_dri2_attach_format_t *) attachments;
 269    cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
 270                                                         dri2_surf->drawable,
 271                                                         count, count,
 272                                                         format_attachments);
 273
 274    reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
 275                                                    cookie, NULL);
 276    if (reply == NULL)
 277       return NULL;
 278
 279    buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
 280    dri2_surf->base.Width = *width = reply->width;
 281    dri2_surf->base.Height = *height = reply->height;
 282    *out_count = reply->count;
 283    dri2_process_buffers(dri2_surf, buffers, *out_count);
 284
 285    free(reply);
 286
 287    return dri2_surf->buffers;
 288 }
 289
 290 static void
 291 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 292 {
 293    (void) driDrawable;
 294
 295    /* FIXME: Does EGL support front buffer rendering at all? */
 296
 297 #if 0
 298    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 299
 300    dri2WaitGL(dri2_surf);
 301 #else
 302    (void) loaderPrivate;
 303 #endif
 304 }
 305
 306 static char *
 307 dri2_strndup(const char *s, int length)
 308 {
 309    char *d;
 310
 311    d = malloc(length + 1);
 312    if (d == NULL)
 313       return NULL;
 314
 315    memcpy(d, s, length);
 316    d[length] = '\0';
 317
 318    return d;
 319 }
 320
 321 static EGLBoolean
 322 dri2_connect(struct dri2_egl_display *dri2_dpy)
 323 {
 324    xcb_xfixes_query_version_reply_t *xfixes_query;
 325    xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
 326    xcb_dri2_query_version_reply_t *dri2_query;
 327    xcb_dri2_query_version_cookie_t dri2_query_cookie;
 328    xcb_dri2_connect_reply_t *connect;
 329    xcb_dri2_connect_cookie_t connect_cookie;
 330    xcb_generic_error_t *error;
 331    xcb_screen_iterator_t s;
 332
 333    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
 334    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
 335
 336    xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
 337                                                   XCB_XFIXES_MAJOR_VERSION,
 338                                                   XCB_XFIXES_MINOR_VERSION);
 339
 340    dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
 341                                                XCB_DRI2_MAJOR_VERSION,
 342                                                XCB_DRI2_MINOR_VERSION);
 343
 344    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 345    connect_cookie = xcb_dri2_connect_unchecked (dri2_dpy->conn,
 346                                                 s.data->root,
 347                                                 XCB_DRI2_DRIVER_TYPE_DRI);
 348
 349    xfixes_query =
 350       xcb_xfixes_query_version_reply (dri2_dpy->conn,
 351                                       xfixes_query_cookie, &error);
 352    if (xfixes_query == NULL ||
 353        error != NULL || xfixes_query->major_version < 2) {
 354       _eglLog(_EGL_FATAL, "DRI2: failed to query xfixes version");
 355       free(error);
 356       return EGL_FALSE;
 357    }
 358    free(xfixes_query);
 359
 360    dri2_query =
 361       xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
 362    if (dri2_query == NULL || error != NULL) {
 363       _eglLog(_EGL_FATAL, "DRI2: failed to query version");
 364       free(error);
 365       return EGL_FALSE;
 366    }
 367    dri2_dpy->dri2_major = dri2_query->major_version;
 368    dri2_dpy->dri2_minor = dri2_query->minor_version;
 369    free(dri2_query);
 370
 371    connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
 372    if (connect == NULL ||
 373        connect->driver_name_length + connect->device_name_length == 0) {
 374       _eglLog(_EGL_FATAL, "DRI2: failed to authenticate");
 375       return EGL_FALSE;
 376    }
 377
 378    dri2_dpy->device_name =
 379       dri2_strndup(xcb_dri2_connect_device_name (connect),
 380                    xcb_dri2_connect_device_name_length (connect));
 381
 382    dri2_dpy->driver_name =
 383       dri2_strndup(xcb_dri2_connect_driver_name (connect),
 384                    xcb_dri2_connect_driver_name_length (connect));
 385
 386    if (dri2_dpy->device_name == NULL || dri2_dpy->driver_name == NULL) {
 387       free(dri2_dpy->device_name);
 388       free(dri2_dpy->driver_name);
 389       free(connect);
 390       return EGL_FALSE;
 391    }
 392    free(connect);
 393
 394    return EGL_TRUE;
 395 }
 396
 397 static EGLBoolean
 398 dri2_authenticate(struct dri2_egl_display *dri2_dpy)
 399 {
 400    xcb_dri2_authenticate_reply_t *authenticate;
 401    xcb_dri2_authenticate_cookie_t authenticate_cookie;
 402    xcb_screen_iterator_t s;
 403    drm_magic_t magic;
 404
 405    if (drmGetMagic(dri2_dpy->fd, &magic)) {
 406       _eglLog(_EGL_FATAL, "DRI2: failed to get drm magic");
 407       return EGL_FALSE;
 408    }
 409
 410    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 411    authenticate_cookie =
 412       xcb_dri2_authenticate_unchecked(dri2_dpy->conn, s.data->root, magic);
 413    authenticate =
 414       xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
 415    if (authenticate == NULL || !authenticate->authenticated) {
 416       _eglLog(_EGL_FATAL, "DRI2: failed to authenticate");
 417       free(authenticate);
 418       return EGL_FALSE;
 419    }
 420
 421    free(authenticate);
 422
 423    return EGL_TRUE;
 424 }
 425
 426 static EGLBoolean
 427 dri2_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
 428                              _EGLDisplay *disp)
 429 {
 430    xcb_screen_iterator_t s;
 431    xcb_depth_iterator_t d;
 432    xcb_visualtype_t *visuals;
 433    int i, j, id;
 434    EGLint surface_type;
 435    EGLint config_attrs[] = {
 436            EGL_NATIVE_VISUAL_ID,   0,
 437            EGL_NATIVE_VISUAL_TYPE, 0,
 438            EGL_NONE
 439    };
 440
 441    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 442    d = xcb_screen_allowed_depths_iterator(s.data);
 443    id = 1;
 444
 445    surface_type =
 446       EGL_WINDOW_BIT |
 447       EGL_PIXMAP_BIT |
 448       EGL_PBUFFER_BIT |
 449       EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
 450
 451    while (d.rem > 0) {
 452       EGLBoolean class_added[6] = { 0, };
 453
 454       visuals = xcb_depth_visuals(d.data);
 455       for (i = 0; i < xcb_depth_visuals_length(d.data); i++) {
 456          if (class_added[visuals[i]._class])
 457             continue;
 458
 459          class_added[visuals[i]._class] = EGL_TRUE;
 460          for (j = 0; dri2_dpy->driver_configs[j]; j++) {
 461             config_attrs[1] = visuals[i].visual_id;
 462             config_attrs[3] = visuals[i]._class;
 463
 464             dri2_add_config(disp, dri2_dpy->driver_configs[j], id++,
 465                             d.data->depth, surface_type, config_attrs);
 466          }
 467       }
 468
 469       xcb_depth_next(&d);
 470    }
 471
 472    if (!_eglGetArraySize(disp->Configs)) {
 473       _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
 474       return EGL_FALSE;
 475    }
 476
 477    return EGL_TRUE;
 478 }
 479
 480 static EGLBoolean
 481 dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
 482                  _EGLSurface *draw, xcb_xfixes_region_t region)
 483 {
 484    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 485    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 486    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 487    _EGLContext *ctx;
 488    enum xcb_dri2_attachment_t render_attachment;
 489    xcb_dri2_copy_region_cookie_t cookie;
 490
 491    if (dri2_drv->glFlush) {
 492       ctx = _eglGetCurrentContext();
 493       if (ctx && ctx->DrawSurface == &dri2_surf->base)
 494          dri2_drv->glFlush();
 495    }
 496
 497    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 498
 499 #if 0
 500    /* FIXME: Add support for dri swapbuffers, that'll give us swap
 501     * interval and page flipping (at least for fullscreen windows) as
 502     * well as the page flip event.  Unless surface->SwapBehavior is
 503     * EGL_BUFFER_PRESERVED. */
 504 #if __DRI2_FLUSH_VERSION >= 2
 505    if (pdraw->psc->f)
 506       (*pdraw->psc->f->flushInvalidate)(pdraw->driDrawable);
 507 #endif
 508 #endif
 509
 510    if (dri2_surf->have_fake_front)
 511       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
 512    else
 513       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
 514
 515    cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
 516                                            dri2_surf->drawable,
 517                                            region,
 518                                            XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
 519                                            render_attachment);
 520    free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
 521
 522    return EGL_TRUE;
 523 }
 524
 525 static EGLBoolean
 526 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 527 {
 528    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 529
 530    return dri2_copy_region(drv, disp, draw, dri2_surf->region);
 531 }
 532
 533 static EGLBoolean
 534 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 535                          EGLint numRects, const EGLint *rects)
 536 {
 537    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 538    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 539    EGLBoolean ret;
 540    xcb_xfixes_region_t region;
 541    xcb_rectangle_t rectangles[16];
 542    int i;
 543
 544    if (numRects > (int)ARRAY_SIZE(rectangles))
 545       return dri2_copy_region(drv, disp, draw, dri2_surf->region);
 546
 547    /* FIXME: Invert y here? */
 548    for (i = 0; i < numRects; i++) {
 549       rectangles[i].x = rects[i * 4];
 550       rectangles[i].y = rects[i * 4 + 1];
 551       rectangles[i].width = rects[i * 4 + 2];
 552       rectangles[i].height = rects[i * 4 + 3];
 553    }
 554
 555    region = xcb_generate_id(dri2_dpy->conn);
 556    xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles);
 557    ret = dri2_copy_region(drv, disp, draw, region);
 558    xcb_xfixes_destroy_region(dri2_dpy->conn, region);
 559
 560    return ret;
 561 }
 562
 563 static EGLBoolean
 564 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 565                   EGLNativePixmapType target)
 566 {
 567    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 568    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 569    xcb_gcontext_t gc;
 570
 571    (void) drv;
 572
 573    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 574
 575    gc = xcb_generate_id(dri2_dpy->conn);
 576    xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
 577    xcb_copy_area(dri2_dpy->conn,
 578                   dri2_surf->drawable,
 579                   target,
 580                   gc,
 581                   0, 0,
 582                   0, 0,
 583                   dri2_surf->base.Width,
 584                   dri2_surf->base.Height);
 585    xcb_free_gc(dri2_dpy->conn, gc);
 586
 587    return EGL_TRUE;
 588 }
 589
 590 static _EGLImage *
 591 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 592                              EGLClientBuffer buffer, const EGLint *attr_list)
 593 {
 594    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 595    struct dri2_egl_image *dri2_img;
 596    unsigned int attachments[1];
 597    xcb_drawable_t drawable;
 598    xcb_dri2_get_buffers_cookie_t buffers_cookie;
 599    xcb_dri2_get_buffers_reply_t *buffers_reply;
 600    xcb_dri2_dri2_buffer_t *buffers;
 601    xcb_get_geometry_cookie_t geometry_cookie;
 602    xcb_get_geometry_reply_t *geometry_reply;
 603    xcb_generic_error_t *error;
 604    int stride, format;
 605
 606    (void) ctx;
 607
 608    drawable = (xcb_drawable_t) buffer;
 609    xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
 610    attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
 611    buffers_cookie =
 612       xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 613                                       drawable, 1, 1, attachments);
 614    geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
 615    buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
 616                                                buffers_cookie, NULL);
 617    buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
 618    if (buffers == NULL) {
 619       return NULL;
 620    }
 621
 622    geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
 623                                             geometry_cookie, &error);
 624    if (geometry_reply == NULL || error != NULL) {
 625       _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 626       free(error);
 627       free(buffers_reply);
 628    }
 629
 630    switch (geometry_reply->depth) {
 631    case 16:
 632       format = __DRI_IMAGE_FORMAT_RGB565;
 633       break;
 634    case 24:
 635       format = __DRI_IMAGE_FORMAT_XRGB8888;
 636       break;
 637    case 32:
 638       format = __DRI_IMAGE_FORMAT_ARGB8888;
 639       break;
 640    default:
 641       _eglError(EGL_BAD_PARAMETER,
 642                 "dri2_create_image_khr: unsupported pixmap depth");
 643       free(buffers_reply);
 644       free(geometry_reply);
 645       return NULL;
 646    }
 647
 648    dri2_img = malloc(sizeof *dri2_img);
 649    if (!dri2_img) {
 650       free(buffers_reply);
 651       free(geometry_reply);
 652       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
 653       return EGL_NO_IMAGE_KHR;
 654    }
 655
 656    if (!_eglInitImage(&dri2_img->base, disp)) {
 657       free(buffers_reply);
 658       free(geometry_reply);
 659       return EGL_NO_IMAGE_KHR;
 660    }
 661
 662    stride = buffers[0].pitch / buffers[0].cpp;
 663    dri2_img->dri_image =
 664       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
 665                                            buffers_reply->width,
 666                                            buffers_reply->height,
 667                                            format,
 668                                            buffers[0].name,
 669                                            stride,
 670                                            dri2_img);
 671
 672    free(buffers_reply);
 673    free(geometry_reply);
 674
 675    return &dri2_img->base;
 676 }
 677
 678 static _EGLImage *
 679 dri2_x11_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 680                           _EGLContext *ctx, EGLenum target,
 681                           EGLClientBuffer buffer, const EGLint *attr_list)
 682 {
 683    (void) drv;
 684
 685    switch (target) {
 686    case EGL_NATIVE_PIXMAP_KHR:
 687       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
 688    default:
 689       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 690    }
 691 }
 692
 693 EGLBoolean
 694 dri2_initialize_x11(_EGLDriver *drv, _EGLDisplay *disp)
 695 {
 696    struct dri2_egl_display *dri2_dpy;
 697
 698    drv->API.CreateWindowSurface = dri2_create_window_surface;
 699    drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
 700    drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
 701    drv->API.DestroySurface = dri2_destroy_surface;
 702    drv->API.SwapBuffers = dri2_swap_buffers;
 703    drv->API.CopyBuffers = dri2_copy_buffers;
 704    drv->API.CreateImageKHR = dri2_x11_create_image_khr;
 705    drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
 706
 707    dri2_dpy = malloc(sizeof *dri2_dpy);
 708    if (!dri2_dpy)
 709       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 710
 711    disp->DriverData = (void *) dri2_dpy;
 712    if (disp->PlatformDisplay == NULL) {
 713       dri2_dpy->conn = xcb_connect(0, 0);
 714    } else {
 715       dri2_dpy->conn = XGetXCBConnection((Display *) disp->PlatformDisplay);
 716    }
 717
 718    if (xcb_connection_has_error(dri2_dpy->conn)) {
 719       _eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
 720       goto cleanup_dpy;
 721    }
 722
 723    if (dri2_dpy->conn) {
 724       if (!dri2_connect(dri2_dpy))
 725          goto cleanup_conn;
 726    }
 727
 728    if (!dri2_load_driver(disp))
 729       goto cleanup_conn;
 730
 731    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 732    if (dri2_dpy->fd == -1) {
 733       _eglLog(_EGL_WARNING,
 734               "DRI2: could not open %s (%s)", dri2_dpy->device_name,
 735               strerror(errno));
 736       goto cleanup_driver;
 737    }
 738
 739    if (dri2_dpy->conn) {
 740       if (!dri2_authenticate(dri2_dpy))
 741          goto cleanup_fd;
 742    }
 743
 744    if (dri2_dpy->dri2_minor >= 1) {
 745       dri2_dpy->loader_extension.base.name = __DRI_DRI2_LOADER;
 746       dri2_dpy->loader_extension.base.version = 3;
 747       dri2_dpy->loader_extension.getBuffers = dri2_get_buffers;
 748       dri2_dpy->loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 749       dri2_dpy->loader_extension.getBuffersWithFormat =
 750          dri2_get_buffers_with_format;
 751    } else {
 752       dri2_dpy->loader_extension.base.name = __DRI_DRI2_LOADER;
 753       dri2_dpy->loader_extension.base.version = 2;
 754       dri2_dpy->loader_extension.getBuffers = dri2_get_buffers;
 755       dri2_dpy->loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 756       dri2_dpy->loader_extension.getBuffersWithFormat = NULL;
 757    }
 758
 759    dri2_dpy->extensions[0] = &dri2_dpy->loader_extension.base;
 760    dri2_dpy->extensions[1] = &image_lookup_extension.base;
 761    dri2_dpy->extensions[2] = NULL;
 762
 763    if (!dri2_create_screen(disp))
 764       goto cleanup_fd;
 765
 766    if (dri2_dpy->conn) {
 767       if (!dri2_add_configs_for_visuals(dri2_dpy, disp))
 768          goto cleanup_configs;
 769    }
 770
 771    disp->Extensions.MESA_drm_image = EGL_TRUE;
 772    disp->Extensions.KHR_image_base = EGL_TRUE;
 773    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
 774    disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 775    disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 776    disp->Extensions.NOK_swap_region = EGL_TRUE;
 777    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
 778
 779    /* we're supporting EGL 1.4 */
 780    disp->VersionMajor = 1;
 781    disp->VersionMinor = 4;
 782
 783    return EGL_TRUE;
 784
 785  cleanup_configs:
 786    _eglCleanupDisplay(disp);
 787    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 788  cleanup_fd:
 789    close(dri2_dpy->fd);
 790  cleanup_driver:
 791    dlclose(dri2_dpy->driver);
 792  cleanup_conn:
 793    if (disp->PlatformDisplay == NULL)
 794       xcb_disconnect(dri2_dpy->conn);
 795  cleanup_dpy:
 796    free(dri2_dpy);
 797
 798    return EGL_FALSE;
 799 }