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 static void
  43 swrastCreateDrawable(struct dri2_egl_display * dri2_dpy,
  44                      struct dri2_egl_surface * dri2_surf,
  45                      int depth)
  46 {
  47    uint32_t           mask;
  48    const uint32_t     function = GXcopy;
  49    uint32_t           valgc[2];
  50
  51    /* create GC's */
  52    dri2_surf->gc = xcb_generate_id(dri2_dpy->conn);
  53    mask = XCB_GC_FUNCTION;
  54    xcb_create_gc(dri2_dpy->conn, dri2_surf->gc, dri2_surf->drawable, mask, &function);
  55
  56    dri2_surf->swapgc = xcb_generate_id(dri2_dpy->conn);
  57    mask = XCB_GC_FUNCTION | XCB_GC_GRAPHICS_EXPOSURES;
  58    valgc[0] = function;
  59    valgc[1] = False;
  60    xcb_create_gc(dri2_dpy->conn, dri2_surf->swapgc, dri2_surf->drawable, mask, valgc);
  61    dri2_surf->depth = depth;
  62    switch (depth) {
  63       case 32:
  64       case 24:
  65          dri2_surf->bytes_per_pixel = 4;
  66          break;
  67       case 16:
  68          dri2_surf->bytes_per_pixel = 2;
  69          break;
  70       case 8:
  71          dri2_surf->bytes_per_pixel = 1;
  72          break;
  73       case 0:
  74          dri2_surf->bytes_per_pixel = 0;
  75          break;
  76       default:
  77          _eglLog(_EGL_WARNING, "unsupported depth %d", depth);
  78    }
  79 }
  80
  81 static void
  82 swrastDestroyDrawable(struct dri2_egl_display * dri2_dpy,
  83                       struct dri2_egl_surface * dri2_surf)
  84 {
  85    xcb_free_gc(dri2_dpy->conn, dri2_surf->gc);
  86    xcb_free_gc(dri2_dpy->conn, dri2_surf->swapgc);
  87 }
  88
  89 static void
  90 swrastGetDrawableInfo(__DRIdrawable * draw,
  91                       int *x, int *y, int *w, int *h,
  92                       void *loaderPrivate)
  93 {
  94    struct dri2_egl_surface *dri2_surf = loaderPrivate;
  95    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
  96
  97    xcb_get_geometry_cookie_t cookie;
  98    xcb_get_geometry_reply_t *reply;
  99    xcb_generic_error_t *error;
 100
 101    *w = *h = 0;
 102    cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 103    reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 104    if (reply == NULL)
 105       return;
 106
 107    if (error != NULL) {
 108       _eglLog(_EGL_WARNING, "error in xcb_get_geometry");
 109       free(error);
 110    } else {
 111       *w = reply->width;
 112       *h = reply->height;
 113    }
 114    free(reply);
 115 }
 116
 117 static void
 118 swrastPutImage(__DRIdrawable * draw, int op,
 119                int x, int y, int w, int h,
 120                char *data, void *loaderPrivate)
 121 {
 122    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 123    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 124
 125    xcb_gcontext_t gc;
 126
 127    switch (op) {
 128    case __DRI_SWRAST_IMAGE_OP_DRAW:
 129       gc = dri2_surf->gc;
 130       break;
 131    case __DRI_SWRAST_IMAGE_OP_SWAP:
 132       gc = dri2_surf->swapgc;
 133       break;
 134    default:
 135       return;
 136    }
 137
 138    xcb_put_image(dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP, dri2_surf->drawable,
 139                  gc, w, h, x, y, 0, dri2_surf->depth,
 140                  w*h*dri2_surf->bytes_per_pixel, (const uint8_t *)data);
 141 }
 142
 143 static void
 144 swrastGetImage(__DRIdrawable * read,
 145                int x, int y, int w, int h,
 146                char *data, void *loaderPrivate)
 147 {
 148    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 149    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 150
 151    xcb_get_image_cookie_t cookie;
 152    xcb_get_image_reply_t *reply;
 153    xcb_generic_error_t *error;
 154
 155    cookie = xcb_get_image (dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
 156                            dri2_surf->drawable, x, y, w, h, ~0);
 157    reply = xcb_get_image_reply (dri2_dpy->conn, cookie, &error);
 158    if (reply == NULL)
 159       return;
 160
 161    if (error != NULL) {
 162       _eglLog(_EGL_WARNING, "error in xcb_get_image");
 163       free(error);
 164    } else {
 165       uint32_t bytes = xcb_get_image_data_length(reply);
 166       uint8_t *idata = xcb_get_image_data(reply);
 167       memcpy(data, idata, bytes);
 168    }
 169    free(reply);
 170 }
 171
 172
 173 /**
 174  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 175  */
 176 static _EGLSurface *
 177 dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 178                     _EGLConfig *conf, EGLNativeWindowType window,
 179                     const EGLint *attrib_list)
 180 {
 181    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 182    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 183    struct dri2_egl_surface *dri2_surf;
 184    xcb_get_geometry_cookie_t cookie;
 185    xcb_get_geometry_reply_t *reply;
 186    xcb_screen_iterator_t s;
 187    xcb_generic_error_t *error;
 188
 189    (void) drv;
 190
 191    dri2_surf = malloc(sizeof *dri2_surf);
 192    if (!dri2_surf) {
 193       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 194       return NULL;
 195    }
 196
 197    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 198       goto cleanup_surf;
 199
 200    dri2_surf->region = XCB_NONE;
 201    if (type == EGL_PBUFFER_BIT) {
 202       dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
 203       s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 204       xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
 205                         dri2_surf->drawable, s.data->root,
 206                         dri2_surf->base.Width, dri2_surf->base.Height);
 207    } else {
 208       dri2_surf->drawable = window;
 209    }
 210
 211    if (dri2_dpy->dri2) {
 212       dri2_surf->dri_drawable =
 213          (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 214                                                type == EGL_WINDOW_BIT ?
 215                                                dri2_conf->dri_double_config :
 216                                                dri2_conf->dri_single_config,
 217                                                dri2_surf);
 218    } else {
 219       assert(dri2_dpy->swrast);
 220       dri2_surf->dri_drawable =
 221          (*dri2_dpy->swrast->createNewDrawable) (dri2_dpy->dri_screen,
 222                                                  dri2_conf->dri_double_config,
 223                                                  dri2_surf);
 224    }
 225
 226    if (dri2_surf->dri_drawable == NULL) {
 227       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 228       goto cleanup_pixmap;
 229    }
 230
 231    if (dri2_dpy->dri2) {
 232       xcb_dri2_create_drawable (dri2_dpy->conn, dri2_surf->drawable);
 233    } else {
 234       swrastCreateDrawable(dri2_dpy, dri2_surf, _eglGetConfigKey(conf, EGL_BUFFER_SIZE));
 235    }
 236
 237    if (type != EGL_PBUFFER_BIT) {
 238       cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 239       reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 240       if (reply == NULL || error != NULL) {
 241          _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 242          free(error);
 243          goto cleanup_dri_drawable;
 244       }
 245
 246       dri2_surf->base.Width = reply->width;
 247       dri2_surf->base.Height = reply->height;
 248       free(reply);
 249    }
 250
 251    return &dri2_surf->base;
 252
 253  cleanup_dri_drawable:
 254    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 255  cleanup_pixmap:
 256    if (type == EGL_PBUFFER_BIT)
 257       xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
 258  cleanup_surf:
 259    free(dri2_surf);
 260
 261    return NULL;
 262 }
 263
 264 /**
 265  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 266  */
 267 static _EGLSurface *
 268 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 269                            _EGLConfig *conf, EGLNativeWindowType window,
 270                            const EGLint *attrib_list)
 271 {
 272    return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 273                               window, attrib_list);
 274 }
 275
 276 static _EGLSurface *
 277 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 278                            _EGLConfig *conf, EGLNativePixmapType pixmap,
 279                            const EGLint *attrib_list)
 280 {
 281    return dri2_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
 282                               pixmap, attrib_list);
 283 }
 284
 285 static _EGLSurface *
 286 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 287                             _EGLConfig *conf, const EGLint *attrib_list)
 288 {
 289    return dri2_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 290                               XCB_WINDOW_NONE, attrib_list);
 291 }
 292
 293 static EGLBoolean
 294 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 295 {
 296    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 297    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 298
 299    (void) drv;
 300
 301    if (!_eglPutSurface(surf))
 302       return EGL_TRUE;
 303
 304    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 305
 306    if (dri2_dpy->dri2) {
 307       xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
 308    } else {
 309       assert(dri2_dpy->swrast);
 310       swrastDestroyDrawable(dri2_dpy, dri2_surf);
 311    }
 312
 313    if (surf->Type == EGL_PBUFFER_BIT)
 314       xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
 315
 316    free(surf);
 317
 318    return EGL_TRUE;
 319 }
 320
 321 /**
 322  * Process list of buffer received from the server
 323  *
 324  * Processes the list of buffers received in a reply from the server to either
 325  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 326  */
 327 static void
 328 dri2_process_buffers(struct dri2_egl_surface *dri2_surf,
 329                      xcb_dri2_dri2_buffer_t *buffers, unsigned count)
 330 {
 331    struct dri2_egl_display *dri2_dpy =
 332       dri2_egl_display(dri2_surf->base.Resource.Display);
 333    xcb_rectangle_t rectangle;
 334    unsigned i;
 335
 336    dri2_surf->buffer_count = count;
 337    dri2_surf->have_fake_front = 0;
 338
 339    /* This assumes the DRI2 buffer attachment tokens matches the
 340     * __DRIbuffer tokens. */
 341    for (i = 0; i < count; i++) {
 342       dri2_surf->buffers[i].attachment = buffers[i].attachment;
 343       dri2_surf->buffers[i].name = buffers[i].name;
 344       dri2_surf->buffers[i].pitch = buffers[i].pitch;
 345       dri2_surf->buffers[i].cpp = buffers[i].cpp;
 346       dri2_surf->buffers[i].flags = buffers[i].flags;
 347
 348       /* We only use the DRI drivers single buffer configs.  This
 349        * means that if we try to render to a window, DRI2 will give us
 350        * the fake front buffer, which we'll use as a back buffer.
 351        * Note that EGL doesn't require that several clients rendering
 352        * to the same window must see the same aux buffers. */
 353       if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 354          dri2_surf->have_fake_front = 1;
 355    }
 356
 357    if (dri2_surf->region != XCB_NONE)
 358       xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
 359
 360    rectangle.x = 0;
 361    rectangle.y = 0;
 362    rectangle.width = dri2_surf->base.Width;
 363    rectangle.height = dri2_surf->base.Height;
 364    dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
 365    xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
 366 }
 367
 368 static __DRIbuffer *
 369 dri2_get_buffers(__DRIdrawable * driDrawable,
 370                 int *width, int *height,
 371                 unsigned int *attachments, int count,
 372                 int *out_count, void *loaderPrivate)
 373 {
 374    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 375    struct dri2_egl_display *dri2_dpy =
 376       dri2_egl_display(dri2_surf->base.Resource.Display);
 377    xcb_dri2_dri2_buffer_t *buffers;
 378    xcb_dri2_get_buffers_reply_t *reply;
 379    xcb_dri2_get_buffers_cookie_t cookie;
 380
 381    (void) driDrawable;
 382
 383    cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 384                                             dri2_surf->drawable,
 385                                             count, count, attachments);
 386    reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
 387    buffers = xcb_dri2_get_buffers_buffers (reply);
 388    if (buffers == NULL)
 389       return NULL;
 390
 391    *out_count = reply->count;
 392    dri2_surf->base.Width = *width = reply->width;
 393    dri2_surf->base.Height = *height = reply->height;
 394    dri2_process_buffers(dri2_surf, buffers, *out_count);
 395
 396    free(reply);
 397
 398    return dri2_surf->buffers;
 399 }
 400
 401 static __DRIbuffer *
 402 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 403                              int *width, int *height,
 404                              unsigned int *attachments, int count,
 405                              int *out_count, void *loaderPrivate)
 406 {
 407    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 408    struct dri2_egl_display *dri2_dpy =
 409       dri2_egl_display(dri2_surf->base.Resource.Display);
 410    xcb_dri2_dri2_buffer_t *buffers;
 411    xcb_dri2_get_buffers_with_format_reply_t *reply;
 412    xcb_dri2_get_buffers_with_format_cookie_t cookie;
 413    xcb_dri2_attach_format_t *format_attachments;
 414
 415    (void) driDrawable;
 416
 417    format_attachments = (xcb_dri2_attach_format_t *) attachments;
 418    cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
 419                                                         dri2_surf->drawable,
 420                                                         count, count,
 421                                                         format_attachments);
 422
 423    reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
 424                                                    cookie, NULL);
 425    if (reply == NULL)
 426       return NULL;
 427
 428    buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
 429    dri2_surf->base.Width = *width = reply->width;
 430    dri2_surf->base.Height = *height = reply->height;
 431    *out_count = reply->count;
 432    dri2_process_buffers(dri2_surf, buffers, *out_count);
 433
 434    free(reply);
 435
 436    return dri2_surf->buffers;
 437 }
 438
 439 static void
 440 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 441 {
 442    (void) driDrawable;
 443
 444    /* FIXME: Does EGL support front buffer rendering at all? */
 445
 446 #if 0
 447    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 448
 449    dri2WaitGL(dri2_surf);
 450 #else
 451    (void) loaderPrivate;
 452 #endif
 453 }
 454
 455 static char *
 456 dri2_strndup(const char *s, int length)
 457 {
 458    char *d;
 459
 460    d = malloc(length + 1);
 461    if (d == NULL)
 462       return NULL;
 463
 464    memcpy(d, s, length);
 465    d[length] = '\0';
 466
 467    return d;
 468 }
 469
 470 static EGLBoolean
 471 dri2_connect(struct dri2_egl_display *dri2_dpy)
 472 {
 473    xcb_xfixes_query_version_reply_t *xfixes_query;
 474    xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
 475    xcb_dri2_query_version_reply_t *dri2_query;
 476    xcb_dri2_query_version_cookie_t dri2_query_cookie;
 477    xcb_dri2_connect_reply_t *connect;
 478    xcb_dri2_connect_cookie_t connect_cookie;
 479    xcb_generic_error_t *error;
 480    xcb_screen_iterator_t s;
 481    char *driver_name, *device_name;
 482
 483    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
 484    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
 485
 486    xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
 487                                                   XCB_XFIXES_MAJOR_VERSION,
 488                                                   XCB_XFIXES_MINOR_VERSION);
 489
 490    dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
 491                                                XCB_DRI2_MAJOR_VERSION,
 492                                                XCB_DRI2_MINOR_VERSION);
 493
 494    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 495    connect_cookie = xcb_dri2_connect_unchecked (dri2_dpy->conn,
 496                                                 s.data->root,
 497                                                 XCB_DRI2_DRIVER_TYPE_DRI);
 498
 499    xfixes_query =
 500       xcb_xfixes_query_version_reply (dri2_dpy->conn,
 501                                       xfixes_query_cookie, &error);
 502    if (xfixes_query == NULL ||
 503        error != NULL || xfixes_query->major_version < 2) {
 504       _eglLog(_EGL_WARNING, "DRI2: failed to query xfixes version");
 505       free(error);
 506       return EGL_FALSE;
 507    }
 508    free(xfixes_query);
 509
 510    dri2_query =
 511       xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
 512    if (dri2_query == NULL || error != NULL) {
 513       _eglLog(_EGL_WARNING, "DRI2: failed to query version");
 514       free(error);
 515       return EGL_FALSE;
 516    }
 517    dri2_dpy->dri2_major = dri2_query->major_version;
 518    dri2_dpy->dri2_minor = dri2_query->minor_version;
 519    free(dri2_query);
 520
 521    connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
 522    if (connect == NULL ||
 523        connect->driver_name_length + connect->device_name_length == 0) {
 524       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 525       return EGL_FALSE;
 526    }
 527
 528    driver_name = xcb_dri2_connect_driver_name (connect);
 529    dri2_dpy->driver_name =
 530       dri2_strndup(driver_name,
 531                    xcb_dri2_connect_driver_name_length (connect));
 532
 533 #if XCB_DRI2_CONNECT_DEVICE_NAME_BROKEN
 534    device_name = driver_name + ((connect->driver_name_length + 3) & ~3);
 535 #else
 536    device_name = xcb_dri2_connect_device_name (connect);
 537 #endif
 538
 539    dri2_dpy->device_name =
 540       dri2_strndup(device_name,
 541                    xcb_dri2_connect_device_name_length (connect));
 542
 543    if (dri2_dpy->device_name == NULL || dri2_dpy->driver_name == NULL) {
 544       free(dri2_dpy->device_name);
 545       free(dri2_dpy->driver_name);
 546       free(connect);
 547       return EGL_FALSE;
 548    }
 549    free(connect);
 550
 551    return EGL_TRUE;
 552 }
 553
 554 static int
 555 dri2_x11_authenticate(_EGLDisplay *disp, uint32_t id)
 556 {
 557    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 558    xcb_dri2_authenticate_reply_t *authenticate;
 559    xcb_dri2_authenticate_cookie_t authenticate_cookie;
 560    xcb_screen_iterator_t s;
 561    int ret = 0;
 562
 563    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 564    authenticate_cookie =
 565       xcb_dri2_authenticate_unchecked(dri2_dpy->conn, s.data->root, id);
 566    authenticate =
 567       xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
 568
 569    if (authenticate == NULL || !authenticate->authenticated)
 570       ret = -1;
 571
 572    if (authenticate)
 573       free(authenticate);
 574
 575    return ret;
 576 }
 577
 578 static EGLBoolean
 579 dri2_authenticate(_EGLDisplay *disp)
 580 {
 581    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 582    drm_magic_t magic;
 583
 584    if (drmGetMagic(dri2_dpy->fd, &magic)) {
 585       _eglLog(_EGL_WARNING, "DRI2: failed to get drm magic");
 586       return EGL_FALSE;
 587    }
 588
 589    if (dri2_x11_authenticate(disp, magic) < 0) {
 590       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 591       return EGL_FALSE;
 592    }
 593
 594    return EGL_TRUE;
 595 }
 596
 597 static EGLBoolean
 598 dri2_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
 599                              _EGLDisplay *disp)
 600 {
 601    xcb_screen_iterator_t s;
 602    xcb_depth_iterator_t d;
 603    xcb_visualtype_t *visuals;
 604    int i, j, id;
 605    EGLint surface_type;
 606    EGLint config_attrs[] = {
 607            EGL_NATIVE_VISUAL_ID,   0,
 608            EGL_NATIVE_VISUAL_TYPE, 0,
 609            EGL_NONE
 610    };
 611
 612    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 613    d = xcb_screen_allowed_depths_iterator(s.data);
 614    id = 1;
 615
 616    surface_type =
 617       EGL_WINDOW_BIT |
 618       EGL_PIXMAP_BIT |
 619       EGL_PBUFFER_BIT |
 620       EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
 621
 622    while (d.rem > 0) {
 623       EGLBoolean class_added[6] = { 0, };
 624
 625       visuals = xcb_depth_visuals(d.data);
 626       for (i = 0; i < xcb_depth_visuals_length(d.data); i++) {
 627          if (class_added[visuals[i]._class])
 628             continue;
 629
 630          class_added[visuals[i]._class] = EGL_TRUE;
 631          for (j = 0; dri2_dpy->driver_configs[j]; j++) {
 632             config_attrs[1] = visuals[i].visual_id;
 633             config_attrs[3] = visuals[i]._class;
 634
 635             dri2_add_config(disp, dri2_dpy->driver_configs[j], id++,
 636                             d.data->depth, surface_type, config_attrs);
 637          }
 638       }
 639
 640       xcb_depth_next(&d);
 641    }
 642
 643    if (!_eglGetArraySize(disp->Configs)) {
 644       _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
 645       return EGL_FALSE;
 646    }
 647
 648    return EGL_TRUE;
 649 }
 650
 651 static EGLBoolean
 652 dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
 653                  _EGLSurface *draw, xcb_xfixes_region_t region)
 654 {
 655    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 656    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 657    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 658    _EGLContext *ctx;
 659    enum xcb_dri2_attachment_t render_attachment;
 660    xcb_dri2_copy_region_cookie_t cookie;
 661
 662    if (dri2_drv->glFlush) {
 663       ctx = _eglGetCurrentContext();
 664       if (ctx && ctx->DrawSurface == &dri2_surf->base)
 665          dri2_drv->glFlush();
 666    }
 667
 668    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 669
 670 #if 0
 671    /* FIXME: Add support for dri swapbuffers, that'll give us swap
 672     * interval and page flipping (at least for fullscreen windows) as
 673     * well as the page flip event.  Unless surface->SwapBehavior is
 674     * EGL_BUFFER_PRESERVED. */
 675 #if __DRI2_FLUSH_VERSION >= 2
 676    if (pdraw->psc->f)
 677       (*pdraw->psc->f->flushInvalidate)(pdraw->driDrawable);
 678 #endif
 679 #endif
 680
 681    if (dri2_surf->have_fake_front)
 682       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
 683    else
 684       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
 685
 686    cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
 687                                            dri2_surf->drawable,
 688                                            region,
 689                                            XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
 690                                            render_attachment);
 691    free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
 692
 693    return EGL_TRUE;
 694 }
 695
 696 static EGLBoolean
 697 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 698 {
 699    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 700    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 701
 702    if (dri2_dpy->dri2) {
 703       return dri2_copy_region(drv, disp, draw, dri2_surf->region);
 704    } else {
 705       assert(dri2_dpy->swrast);
 706
 707       dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
 708       return EGL_TRUE;
 709    }
 710 }
 711
 712 static EGLBoolean
 713 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 714                          EGLint numRects, const EGLint *rects)
 715 {
 716    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 717    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 718    EGLBoolean ret;
 719    xcb_xfixes_region_t region;
 720    xcb_rectangle_t rectangles[16];
 721    int i;
 722
 723    if (numRects > (int)ARRAY_SIZE(rectangles))
 724       return dri2_copy_region(drv, disp, draw, dri2_surf->region);
 725
 726    /* FIXME: Invert y here? */
 727    for (i = 0; i < numRects; i++) {
 728       rectangles[i].x = rects[i * 4];
 729       rectangles[i].y = rects[i * 4 + 1];
 730       rectangles[i].width = rects[i * 4 + 2];
 731       rectangles[i].height = rects[i * 4 + 3];
 732    }
 733
 734    region = xcb_generate_id(dri2_dpy->conn);
 735    xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles);
 736    ret = dri2_copy_region(drv, disp, draw, region);
 737    xcb_xfixes_destroy_region(dri2_dpy->conn, region);
 738
 739    return ret;
 740 }
 741
 742 static EGLBoolean
 743 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
 744                   EGLNativePixmapType target)
 745 {
 746    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 747    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 748    xcb_gcontext_t gc;
 749
 750    (void) drv;
 751
 752    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 753
 754    gc = xcb_generate_id(dri2_dpy->conn);
 755    xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
 756    xcb_copy_area(dri2_dpy->conn,
 757                   dri2_surf->drawable,
 758                   target,
 759                   gc,
 760                   0, 0,
 761                   0, 0,
 762                   dri2_surf->base.Width,
 763                   dri2_surf->base.Height);
 764    xcb_free_gc(dri2_dpy->conn, gc);
 765
 766    return EGL_TRUE;
 767 }
 768
 769 static _EGLImage *
 770 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 771                              EGLClientBuffer buffer, const EGLint *attr_list)
 772 {
 773    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 774    struct dri2_egl_image *dri2_img;
 775    unsigned int attachments[1];
 776    xcb_drawable_t drawable;
 777    xcb_dri2_get_buffers_cookie_t buffers_cookie;
 778    xcb_dri2_get_buffers_reply_t *buffers_reply;
 779    xcb_dri2_dri2_buffer_t *buffers;
 780    xcb_get_geometry_cookie_t geometry_cookie;
 781    xcb_get_geometry_reply_t *geometry_reply;
 782    xcb_generic_error_t *error;
 783    int stride, format;
 784
 785    (void) ctx;
 786
 787    drawable = (xcb_drawable_t) buffer;
 788    xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
 789    attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
 790    buffers_cookie =
 791       xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 792                                       drawable, 1, 1, attachments);
 793    geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
 794    buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
 795                                                buffers_cookie, NULL);
 796    buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
 797    if (buffers == NULL) {
 798       return NULL;
 799    }
 800
 801    geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
 802                                             geometry_cookie, &error);
 803    if (geometry_reply == NULL || error != NULL) {
 804       _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 805       free(error);
 806       free(buffers_reply);
 807       return NULL;
 808    }
 809
 810    switch (geometry_reply->depth) {
 811    case 16:
 812       format = __DRI_IMAGE_FORMAT_RGB565;
 813       break;
 814    case 24:
 815       format = __DRI_IMAGE_FORMAT_XRGB8888;
 816       break;
 817    case 32:
 818       format = __DRI_IMAGE_FORMAT_ARGB8888;
 819       break;
 820    default:
 821       _eglError(EGL_BAD_PARAMETER,
 822                 "dri2_create_image_khr: unsupported pixmap depth");
 823       free(buffers_reply);
 824       free(geometry_reply);
 825       return NULL;
 826    }
 827
 828    dri2_img = malloc(sizeof *dri2_img);
 829    if (!dri2_img) {
 830       free(buffers_reply);
 831       free(geometry_reply);
 832       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
 833       return EGL_NO_IMAGE_KHR;
 834    }
 835
 836    if (!_eglInitImage(&dri2_img->base, disp)) {
 837       free(buffers_reply);
 838       free(geometry_reply);
 839       return EGL_NO_IMAGE_KHR;
 840    }
 841
 842    stride = buffers[0].pitch / buffers[0].cpp;
 843    dri2_img->dri_image =
 844       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
 845                                            buffers_reply->width,
 846                                            buffers_reply->height,
 847                                            format,
 848                                            buffers[0].name,
 849                                            stride,
 850                                            dri2_img);
 851
 852    free(buffers_reply);
 853    free(geometry_reply);
 854
 855    return &dri2_img->base;
 856 }
 857
 858 static _EGLImage *
 859 dri2_x11_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 860                           _EGLContext *ctx, EGLenum target,
 861                           EGLClientBuffer buffer, const EGLint *attr_list)
 862 {
 863    (void) drv;
 864
 865    switch (target) {
 866    case EGL_NATIVE_PIXMAP_KHR:
 867       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
 868    default:
 869       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 870    }
 871 }
 872
 873 static EGLBoolean
 874 dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp)
 875 {
 876    struct dri2_egl_display *dri2_dpy;
 877
 878    drv->API.CreateWindowSurface = dri2_create_window_surface;
 879    drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
 880    drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
 881    drv->API.DestroySurface = dri2_destroy_surface;
 882    drv->API.SwapBuffers = dri2_swap_buffers;
 883    drv->API.CopyBuffers = dri2_copy_buffers;
 884
 885    drv->API.SwapBuffersRegionNOK = NULL;
 886    drv->API.CreateImageKHR  = NULL;
 887    drv->API.DestroyImageKHR = NULL;
 888    drv->API.CreateDRMImageMESA = NULL;
 889    drv->API.ExportDRMImageMESA = NULL;
 890
 891    dri2_dpy = malloc(sizeof *dri2_dpy);
 892    if (!dri2_dpy)
 893       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 894
 895    memset(dri2_dpy, 0, sizeof *dri2_dpy);
 896
 897    disp->DriverData = (void *) dri2_dpy;
 898    if (disp->PlatformDisplay == NULL) {
 899       dri2_dpy->conn = xcb_connect(0, 0);
 900    } else {
 901       dri2_dpy->conn = XGetXCBConnection((Display *) disp->PlatformDisplay);
 902    }
 903
 904    if (xcb_connection_has_error(dri2_dpy->conn)) {
 905       _eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
 906       goto cleanup_dpy;
 907    }
 908
 909    dri2_dpy->driver_name = dri2_strndup("swrast", strlen("swrast"));
 910
 911    if (!dri2_load_driver(disp))
 912       goto cleanup_conn;
 913
 914    dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
 915    dri2_dpy->swrast_loader_extension.base.version = __DRI_SWRAST_LOADER_VERSION;
 916    dri2_dpy->swrast_loader_extension.getDrawableInfo = swrastGetDrawableInfo;
 917    dri2_dpy->swrast_loader_extension.putImage = swrastPutImage;
 918    dri2_dpy->swrast_loader_extension.getImage = swrastGetImage;
 919
 920    dri2_dpy->extensions[0] = &dri2_dpy->swrast_loader_extension.base;
 921    dri2_dpy->extensions[1] = NULL;
 922    dri2_dpy->extensions[2] = NULL;
 923
 924    if (!dri2_create_screen(disp))
 925       goto cleanup_driver;
 926
 927    if (dri2_dpy->conn) {
 928       if (!dri2_add_configs_for_visuals(dri2_dpy, disp))
 929          goto cleanup_configs;
 930    }
 931
 932    /* we're supporting EGL 1.4 */
 933    disp->VersionMajor = 1;
 934    disp->VersionMinor = 4;
 935
 936    return EGL_TRUE;
 937
 938  cleanup_configs:
 939    _eglCleanupDisplay(disp);
 940    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 941  cleanup_driver:
 942    dlclose(dri2_dpy->driver);
 943  cleanup_conn:
 944    if (disp->PlatformDisplay == NULL)
 945       xcb_disconnect(dri2_dpy->conn);
 946  cleanup_dpy:
 947    free(dri2_dpy);
 948
 949    return EGL_FALSE;
 950 }
 951
 952
 953 static EGLBoolean
 954 dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp)
 955 {
 956    struct dri2_egl_display *dri2_dpy;
 957
 958    drv->API.CreateWindowSurface = dri2_create_window_surface;
 959    drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
 960    drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
 961    drv->API.DestroySurface = dri2_destroy_surface;
 962    drv->API.SwapBuffers = dri2_swap_buffers;
 963    drv->API.CopyBuffers = dri2_copy_buffers;
 964    drv->API.CreateImageKHR = dri2_x11_create_image_khr;
 965    drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
 966
 967    dri2_dpy = malloc(sizeof *dri2_dpy);
 968    if (!dri2_dpy)
 969       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 970
 971    memset(dri2_dpy, 0, sizeof *dri2_dpy);
 972
 973    disp->DriverData = (void *) dri2_dpy;
 974    if (disp->PlatformDisplay == NULL) {
 975       dri2_dpy->conn = xcb_connect(0, 0);
 976    } else {
 977       dri2_dpy->conn = XGetXCBConnection((Display *) disp->PlatformDisplay);
 978    }
 979
 980    if (xcb_connection_has_error(dri2_dpy->conn)) {
 981       _eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
 982       goto cleanup_dpy;
 983    }
 984
 985    if (dri2_dpy->conn) {
 986       if (!dri2_connect(dri2_dpy))
 987          goto cleanup_conn;
 988    }
 989
 990    if (!dri2_load_driver(disp))
 991       goto cleanup_conn;
 992
 993    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
 994    if (dri2_dpy->fd == -1) {
 995       _eglLog(_EGL_WARNING,
 996               "DRI2: could not open %s (%s)", dri2_dpy->device_name,
 997               strerror(errno));
 998       goto cleanup_driver;
 999    }
1000
1001    if (dri2_dpy->conn) {
1002       if (!dri2_authenticate(disp))
1003          goto cleanup_fd;
1004    }
1005
1006    if (dri2_dpy->dri2_minor >= 1) {
1007       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1008       dri2_dpy->dri2_loader_extension.base.version = 3;
1009       dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
1010       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
1011       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1012          dri2_get_buffers_with_format;
1013    } else {
1014       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1015       dri2_dpy->dri2_loader_extension.base.version = 2;
1016       dri2_dpy->dri2_loader_extension.getBuffers = dri2_get_buffers;
1017       dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
1018       dri2_dpy->dri2_loader_extension.getBuffersWithFormat = NULL;
1019    }
1020
1021    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
1022    dri2_dpy->extensions[1] = &image_lookup_extension.base;
1023    dri2_dpy->extensions[2] = NULL;
1024
1025    if (!dri2_create_screen(disp))
1026       goto cleanup_fd;
1027
1028    if (dri2_dpy->conn) {
1029       if (!dri2_add_configs_for_visuals(dri2_dpy, disp))
1030          goto cleanup_configs;
1031    }
1032
1033    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1034    disp->Extensions.NOK_swap_region = EGL_TRUE;
1035    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1036
1037 #ifdef HAVE_WAYLAND_PLATFORM
1038    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1039 #endif
1040    dri2_dpy->authenticate = dri2_x11_authenticate;
1041
1042    /* we're supporting EGL 1.4 */
1043    disp->VersionMajor = 1;
1044    disp->VersionMinor = 4;
1045
1046    return EGL_TRUE;
1047
1048  cleanup_configs:
1049    _eglCleanupDisplay(disp);
1050    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1051  cleanup_fd:
1052    close(dri2_dpy->fd);
1053  cleanup_driver:
1054    dlclose(dri2_dpy->driver);
1055  cleanup_conn:
1056    if (disp->PlatformDisplay == NULL)
1057       xcb_disconnect(dri2_dpy->conn);
1058  cleanup_dpy:
1059    free(dri2_dpy);
1060
1061    return EGL_FALSE;
1062 }
1063
1064 EGLBoolean
1065 dri2_initialize_x11(_EGLDriver *drv, _EGLDisplay *disp)
1066 {
1067    EGLBoolean initialized = EGL_TRUE;
1068
1069    int x11_dri2_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1070
1071    if (x11_dri2_accel) {
1072       if (!dri2_initialize_x11_dri2(drv, disp)) {
1073          initialized = dri2_initialize_x11_swrast(drv, disp);
1074       }
1075    } else {
1076       initialized = dri2_initialize_x11_swrast(drv, disp);
1077    }
1078
1079    return initialized;
1080 }
1081