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
  46 #include "egl_dri2.h"
  47 #include "egl_dri2_fallbacks.h"
  48 #include "loader.h"
  49
  50 #ifdef HAVE_DRI3
  51 #include "platform_x11_dri3.h"
  52 #endif
  53
  54 static EGLBoolean
  55 dri2_x11_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
  56                        EGLint interval);
  57
  58 uint32_t
  59 dri2_format_for_depth(struct dri2_egl_display *dri2_dpy, uint32_t depth);
  60
  61 static void
  62 swrastCreateDrawable(struct dri2_egl_display * dri2_dpy,
  63                      struct dri2_egl_surface * dri2_surf)
  64 {
  65    uint32_t           mask;
  66    const uint32_t     function = GXcopy;
  67    uint32_t           valgc[2];
  68
  69    /* create GC's */
  70    dri2_surf->gc = xcb_generate_id(dri2_dpy->conn);
  71    mask = XCB_GC_FUNCTION;
  72    xcb_create_gc(dri2_dpy->conn, dri2_surf->gc, dri2_surf->drawable, mask, &function);
  73
  74    dri2_surf->swapgc = xcb_generate_id(dri2_dpy->conn);
  75    mask = XCB_GC_FUNCTION | XCB_GC_GRAPHICS_EXPOSURES;
  76    valgc[0] = function;
  77    valgc[1] = False;
  78    xcb_create_gc(dri2_dpy->conn, dri2_surf->swapgc, dri2_surf->drawable, mask, valgc);
  79    switch (dri2_surf->depth) {
  80       case 32:
  81       case 30:
  82       case 24:
  83          dri2_surf->bytes_per_pixel = 4;
  84          break;
  85       case 16:
  86          dri2_surf->bytes_per_pixel = 2;
  87          break;
  88       case 8:
  89          dri2_surf->bytes_per_pixel = 1;
  90          break;
  91       case 0:
  92          dri2_surf->bytes_per_pixel = 0;
  93          break;
  94       default:
  95          _eglLog(_EGL_WARNING, "unsupported depth %d", dri2_surf->depth);
  96    }
  97 }
  98
  99 static void
 100 swrastDestroyDrawable(struct dri2_egl_display * dri2_dpy,
 101                       struct dri2_egl_surface * dri2_surf)
 102 {
 103    xcb_free_gc(dri2_dpy->conn, dri2_surf->gc);
 104    xcb_free_gc(dri2_dpy->conn, dri2_surf->swapgc);
 105 }
 106
 107 static bool
 108 x11_get_drawable_info(__DRIdrawable * draw,
 109                       int *x, int *y, int *w, int *h,
 110                       void *loaderPrivate)
 111 {
 112    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 113    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 114
 115    xcb_get_geometry_cookie_t cookie;
 116    xcb_get_geometry_reply_t *reply;
 117    xcb_generic_error_t *error;
 118    bool ret;
 119
 120    cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 121    reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 122    if (reply == NULL)
 123       return false;
 124
 125    if (error != NULL) {
 126       ret = false;
 127       _eglLog(_EGL_WARNING, "error in xcb_get_geometry");
 128       free(error);
 129    } else {
 130       *x = reply->x;
 131       *y = reply->y;
 132       *w = reply->width;
 133       *h = reply->height;
 134       ret = true;
 135    }
 136    free(reply);
 137    return ret;
 138 }
 139
 140 static void
 141 swrastGetDrawableInfo(__DRIdrawable * draw,
 142                       int *x, int *y, int *w, int *h,
 143                       void *loaderPrivate)
 144 {
 145    *x = *y = *w = *h = 0;
 146    x11_get_drawable_info(draw, x, y, w, h, loaderPrivate);
 147 }
 148
 149 static void
 150 swrastPutImage(__DRIdrawable * draw, int op,
 151                int x, int y, int w, int h,
 152                char *data, void *loaderPrivate)
 153 {
 154    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 155    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 156
 157    xcb_gcontext_t gc;
 158
 159    switch (op) {
 160    case __DRI_SWRAST_IMAGE_OP_DRAW:
 161       gc = dri2_surf->gc;
 162       break;
 163    case __DRI_SWRAST_IMAGE_OP_SWAP:
 164       gc = dri2_surf->swapgc;
 165       break;
 166    default:
 167       return;
 168    }
 169
 170    xcb_put_image(dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP, dri2_surf->drawable,
 171                  gc, w, h, x, y, 0, dri2_surf->depth,
 172                  w*h*dri2_surf->bytes_per_pixel, (const uint8_t *)data);
 173 }
 174
 175 static void
 176 swrastGetImage(__DRIdrawable * read,
 177                int x, int y, int w, int h,
 178                char *data, void *loaderPrivate)
 179 {
 180    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 181    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
 182
 183    xcb_get_image_cookie_t cookie;
 184    xcb_get_image_reply_t *reply;
 185    xcb_generic_error_t *error;
 186
 187    cookie = xcb_get_image (dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
 188                            dri2_surf->drawable, x, y, w, h, ~0);
 189    reply = xcb_get_image_reply (dri2_dpy->conn, cookie, &error);
 190    if (reply == NULL)
 191       return;
 192
 193    if (error != NULL) {
 194       _eglLog(_EGL_WARNING, "error in xcb_get_image");
 195       free(error);
 196    } else {
 197       uint32_t bytes = xcb_get_image_data_length(reply);
 198       uint8_t *idata = xcb_get_image_data(reply);
 199       memcpy(data, idata, bytes);
 200    }
 201    free(reply);
 202 }
 203
 204
 205 static xcb_screen_t *
 206 get_xcb_screen(xcb_screen_iterator_t iter, int screen)
 207 {
 208     for (; iter.rem; --screen, xcb_screen_next(&iter))
 209         if (screen == 0)
 210             return iter.data;
 211
 212     return NULL;
 213 }
 214
 215 static xcb_visualtype_t *
 216 get_xcb_visualtype_for_depth(struct dri2_egl_display *dri2_dpy, int depth)
 217 {
 218    xcb_visualtype_iterator_t visual_iter;
 219    xcb_screen_t *screen = dri2_dpy->screen;
 220    xcb_depth_iterator_t depth_iter = xcb_screen_allowed_depths_iterator(screen);
 221
 222    for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
 223       if (depth_iter.data->depth != depth)
 224          continue;
 225
 226       visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
 227       if (visual_iter.rem)
 228          return visual_iter.data;
 229    }
 230
 231    return NULL;
 232 }
 233
 234 /* Get red channel mask for given depth. */
 235 unsigned int
 236 dri2_x11_get_red_mask_for_depth(struct dri2_egl_display *dri2_dpy, int depth)
 237 {
 238    xcb_visualtype_t *visual = get_xcb_visualtype_for_depth(dri2_dpy, depth);
 239
 240    if (visual)
 241       return visual->red_mask;
 242
 243    return 0;
 244 }
 245
 246 /**
 247  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 248  */
 249 static _EGLSurface *
 250 dri2_x11_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 251                         _EGLConfig *conf, void *native_surface,
 252                         const EGLint *attrib_list)
 253 {
 254    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 255    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 256    struct dri2_egl_surface *dri2_surf;
 257    xcb_get_geometry_cookie_t cookie;
 258    xcb_get_geometry_reply_t *reply;
 259    xcb_generic_error_t *error;
 260    const __DRIconfig *config;
 261
 262    (void) drv;
 263
 264    dri2_surf = calloc(1, sizeof *dri2_surf);
 265    if (!dri2_surf) {
 266       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 267       return NULL;
 268    }
 269
 270    if (!dri2_init_surface(&dri2_surf->base, disp, type, conf, attrib_list,
 271                           false, native_surface))
 272       goto cleanup_surf;
 273
 274    dri2_surf->region = XCB_NONE;
 275    if (type == EGL_PBUFFER_BIT) {
 276       dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
 277       xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
 278                        dri2_surf->drawable, dri2_dpy->screen->root,
 279                         dri2_surf->base.Width, dri2_surf->base.Height);
 280    } else {
 281       STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_surface));
 282       dri2_surf->drawable = (uintptr_t) native_surface;
 283    }
 284
 285    config = dri2_get_dri_config(dri2_conf, type,
 286                                 dri2_surf->base.GLColorspace);
 287
 288    if (!config) {
 289       _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
 290       goto cleanup_pixmap;
 291    }
 292
 293    if (!dri2_create_drawable(dri2_dpy, config, dri2_surf, dri2_surf))
 294       goto cleanup_pixmap;
 295
 296    if (type != EGL_PBUFFER_BIT) {
 297       cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 298       reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 299       if (error != NULL) {
 300          if (error->error_code == BadAlloc)
 301             _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 302          else if (type == EGL_WINDOW_BIT)
 303             _eglError(EGL_BAD_NATIVE_WINDOW, "xcb_get_geometry");
 304          else
 305             _eglError(EGL_BAD_NATIVE_PIXMAP, "xcb_get_geometry");
 306          free(error);
 307          goto cleanup_dri_drawable;
 308       } else if (reply == NULL) {
 309          _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 310          goto cleanup_dri_drawable;
 311       }
 312
 313       dri2_surf->base.Width = reply->width;
 314       dri2_surf->base.Height = reply->height;
 315       dri2_surf->depth = reply->depth;
 316       free(reply);
 317    }
 318
 319    if (dri2_dpy->dri2) {
 320       xcb_void_cookie_t cookie;
 321       int conn_error;
 322
 323       cookie = xcb_dri2_create_drawable_checked(dri2_dpy->conn,
 324                                                 dri2_surf->drawable);
 325       error = xcb_request_check(dri2_dpy->conn, cookie);
 326       conn_error = xcb_connection_has_error(dri2_dpy->conn);
 327       if (conn_error || error != NULL) {
 328          if (type == EGL_PBUFFER_BIT || conn_error || error->error_code == BadAlloc)
 329             _eglError(EGL_BAD_ALLOC, "xcb_dri2_create_drawable_checked");
 330          else if (type == EGL_WINDOW_BIT)
 331             _eglError(EGL_BAD_NATIVE_WINDOW,
 332                       "xcb_dri2_create_drawable_checked");
 333          else
 334             _eglError(EGL_BAD_NATIVE_PIXMAP,
 335                       "xcb_dri2_create_drawable_checked");
 336          free(error);
 337          goto cleanup_dri_drawable;
 338       }
 339    } else {
 340       if (type == EGL_PBUFFER_BIT) {
 341          dri2_surf->depth = _eglGetConfigKey(conf, EGL_BUFFER_SIZE);
 342       }
 343       swrastCreateDrawable(dri2_dpy, dri2_surf);
 344    }
 345
 346    /* we always copy the back buffer to front */
 347    dri2_surf->base.PostSubBufferSupportedNV = EGL_TRUE;
 348
 349    return &dri2_surf->base;
 350
 351  cleanup_dri_drawable:
 352    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 353  cleanup_pixmap:
 354    if (type == EGL_PBUFFER_BIT)
 355       xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
 356  cleanup_surf:
 357    free(dri2_surf);
 358
 359    return NULL;
 360 }
 361
 362 /**
 363  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 364  */
 365 static _EGLSurface *
 366 dri2_x11_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 367                                _EGLConfig *conf, void *native_window,
 368                                const EGLint *attrib_list)
 369 {
 370    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 371    _EGLSurface *surf;
 372
 373    surf = dri2_x11_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 374                                   native_window, attrib_list);
 375    if (surf != NULL) {
 376       /* When we first create the DRI2 drawable, its swap interval on the
 377        * server side is 1.
 378        */
 379       surf->SwapInterval = 1;
 380
 381       /* Override that with a driconf-set value. */
 382       dri2_x11_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
 383    }
 384
 385    return surf;
 386 }
 387
 388 static _EGLSurface *
 389 dri2_x11_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 390                                _EGLConfig *conf, void *native_pixmap,
 391                                const EGLint *attrib_list)
 392 {
 393    return dri2_x11_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
 394                                   native_pixmap, attrib_list);
 395 }
 396
 397 static _EGLSurface *
 398 dri2_x11_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 399                                 _EGLConfig *conf, const EGLint *attrib_list)
 400 {
 401    return dri2_x11_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 402                                   NULL, attrib_list);
 403 }
 404
 405 static EGLBoolean
 406 dri2_x11_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 407 {
 408    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 409    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 410
 411    (void) drv;
 412
 413    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 414
 415    if (dri2_dpy->dri2) {
 416       xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
 417    } else {
 418       assert(dri2_dpy->swrast);
 419       swrastDestroyDrawable(dri2_dpy, dri2_surf);
 420    }
 421
 422    if (surf->Type == EGL_PBUFFER_BIT)
 423       xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
 424
 425    dri2_fini_surface(surf);
 426    free(surf);
 427
 428    return EGL_TRUE;
 429 }
 430
 431 /**
 432  * Function utilizes swrastGetDrawableInfo to get surface
 433  * geometry from x server and calls default query surface
 434  * implementation that returns the updated values.
 435  *
 436  * In case of errors we still return values that we currently
 437  * have.
 438  */
 439 static EGLBoolean
 440 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *disp,
 441                    _EGLSurface *surf, EGLint attribute,
 442                    EGLint *value)
 443 {
 444    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 445    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 446    int x, y, w, h;
 447
 448    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
 449
 450    switch (attribute) {
 451    case EGL_WIDTH:
 452    case EGL_HEIGHT:
 453       if (x11_get_drawable_info(drawable, &x, &y, &w, &h, dri2_surf)) {
 454          surf->Width = w;
 455          surf->Height = h;
 456       }
 457       break;
 458    default:
 459       break;
 460    }
 461    return _eglQuerySurface(drv, disp, surf, attribute, value);
 462 }
 463
 464 /**
 465  * Process list of buffer received from the server
 466  *
 467  * Processes the list of buffers received in a reply from the server to either
 468  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 469  */
 470 static void
 471 dri2_x11_process_buffers(struct dri2_egl_surface *dri2_surf,
 472                          xcb_dri2_dri2_buffer_t *buffers, unsigned count)
 473 {
 474    struct dri2_egl_display *dri2_dpy =
 475       dri2_egl_display(dri2_surf->base.Resource.Display);
 476    xcb_rectangle_t rectangle;
 477
 478    dri2_surf->have_fake_front = false;
 479
 480    /* This assumes the DRI2 buffer attachment tokens matches the
 481     * __DRIbuffer tokens. */
 482    for (unsigned i = 0; i < count; i++) {
 483       dri2_surf->buffers[i].attachment = buffers[i].attachment;
 484       dri2_surf->buffers[i].name = buffers[i].name;
 485       dri2_surf->buffers[i].pitch = buffers[i].pitch;
 486       dri2_surf->buffers[i].cpp = buffers[i].cpp;
 487       dri2_surf->buffers[i].flags = buffers[i].flags;
 488
 489       /* We only use the DRI drivers single buffer configs.  This
 490        * means that if we try to render to a window, DRI2 will give us
 491        * the fake front buffer, which we'll use as a back buffer.
 492        * Note that EGL doesn't require that several clients rendering
 493        * to the same window must see the same aux buffers. */
 494       if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 495          dri2_surf->have_fake_front = true;
 496    }
 497
 498    if (dri2_surf->region != XCB_NONE)
 499       xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
 500
 501    rectangle.x = 0;
 502    rectangle.y = 0;
 503    rectangle.width = dri2_surf->base.Width;
 504    rectangle.height = dri2_surf->base.Height;
 505    dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
 506    xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
 507 }
 508
 509 static __DRIbuffer *
 510 dri2_x11_get_buffers(__DRIdrawable * driDrawable,
 511                      int *width, int *height,
 512                      unsigned int *attachments, int count,
 513                      int *out_count, void *loaderPrivate)
 514 {
 515    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 516    struct dri2_egl_display *dri2_dpy =
 517       dri2_egl_display(dri2_surf->base.Resource.Display);
 518    xcb_dri2_dri2_buffer_t *buffers;
 519    xcb_dri2_get_buffers_reply_t *reply;
 520    xcb_dri2_get_buffers_cookie_t cookie;
 521
 522    (void) driDrawable;
 523
 524    cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 525                                             dri2_surf->drawable,
 526                                             count, count, attachments);
 527    reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
 528    if (reply == NULL)
 529       return NULL;
 530    buffers = xcb_dri2_get_buffers_buffers (reply);
 531    if (buffers == NULL)
 532       return NULL;
 533
 534    *out_count = reply->count;
 535    dri2_surf->base.Width = *width = reply->width;
 536    dri2_surf->base.Height = *height = reply->height;
 537    dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
 538
 539    free(reply);
 540
 541    return dri2_surf->buffers;
 542 }
 543
 544 static __DRIbuffer *
 545 dri2_x11_get_buffers_with_format(__DRIdrawable * driDrawable,
 546                                  int *width, int *height,
 547                                  unsigned int *attachments, int count,
 548                                  int *out_count, void *loaderPrivate)
 549 {
 550    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 551    struct dri2_egl_display *dri2_dpy =
 552       dri2_egl_display(dri2_surf->base.Resource.Display);
 553    xcb_dri2_dri2_buffer_t *buffers;
 554    xcb_dri2_get_buffers_with_format_reply_t *reply;
 555    xcb_dri2_get_buffers_with_format_cookie_t cookie;
 556    xcb_dri2_attach_format_t *format_attachments;
 557
 558    (void) driDrawable;
 559
 560    format_attachments = (xcb_dri2_attach_format_t *) attachments;
 561    cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
 562                                                         dri2_surf->drawable,
 563                                                         count, count,
 564                                                         format_attachments);
 565
 566    reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
 567                                                    cookie, NULL);
 568    if (reply == NULL)
 569       return NULL;
 570
 571    buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
 572    dri2_surf->base.Width = *width = reply->width;
 573    dri2_surf->base.Height = *height = reply->height;
 574    *out_count = reply->count;
 575    dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
 576
 577    free(reply);
 578
 579    return dri2_surf->buffers;
 580 }
 581
 582 static void
 583 dri2_x11_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 584 {
 585    (void) driDrawable;
 586
 587    /* FIXME: Does EGL support front buffer rendering at all? */
 588
 589 #if 0
 590    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 591
 592    dri2WaitGL(dri2_surf);
 593 #else
 594    (void) loaderPrivate;
 595 #endif
 596 }
 597
 598 static int
 599 dri2_x11_do_authenticate(struct dri2_egl_display *dri2_dpy, uint32_t id)
 600 {
 601    xcb_dri2_authenticate_reply_t *authenticate;
 602    xcb_dri2_authenticate_cookie_t authenticate_cookie;
 603    int ret = 0;
 604
 605    authenticate_cookie =
 606       xcb_dri2_authenticate_unchecked(dri2_dpy->conn, dri2_dpy->screen->root, id);
 607    authenticate =
 608       xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
 609
 610    if (authenticate == NULL || !authenticate->authenticated)
 611       ret = -1;
 612
 613    free(authenticate);
 614
 615    return ret;
 616 }
 617
 618 static EGLBoolean
 619 dri2_x11_local_authenticate(struct dri2_egl_display *dri2_dpy)
 620 {
 621 #ifdef HAVE_LIBDRM
 622    drm_magic_t magic;
 623
 624    if (drmGetMagic(dri2_dpy->fd, &magic)) {
 625       _eglLog(_EGL_WARNING, "DRI2: failed to get drm magic");
 626       return EGL_FALSE;
 627    }
 628
 629    if (dri2_x11_do_authenticate(dri2_dpy, magic) < 0) {
 630       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 631       return EGL_FALSE;
 632    }
 633 #endif
 634    return EGL_TRUE;
 635 }
 636
 637 static EGLBoolean
 638 dri2_x11_connect(struct dri2_egl_display *dri2_dpy)
 639 {
 640    xcb_xfixes_query_version_reply_t *xfixes_query;
 641    xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
 642    xcb_dri2_query_version_reply_t *dri2_query;
 643    xcb_dri2_query_version_cookie_t dri2_query_cookie;
 644    xcb_dri2_connect_reply_t *connect;
 645    xcb_dri2_connect_cookie_t connect_cookie;
 646    xcb_generic_error_t *error;
 647    char *driver_name, *loader_driver_name, *device_name;
 648    const xcb_query_extension_reply_t *extension;
 649
 650    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
 651    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
 652
 653    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_xfixes_id);
 654    if (!(extension && extension->present))
 655       return EGL_FALSE;
 656
 657    extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_dri2_id);
 658    if (!(extension && extension->present))
 659       return EGL_FALSE;
 660
 661    xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
 662                                                   XCB_XFIXES_MAJOR_VERSION,
 663                                                   XCB_XFIXES_MINOR_VERSION);
 664
 665    dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
 666                                                XCB_DRI2_MAJOR_VERSION,
 667                                                XCB_DRI2_MINOR_VERSION);
 668
 669    connect_cookie = xcb_dri2_connect_unchecked(dri2_dpy->conn, dri2_dpy->screen->root,
 670                                    XCB_DRI2_DRIVER_TYPE_DRI);
 671
 672    xfixes_query =
 673       xcb_xfixes_query_version_reply (dri2_dpy->conn,
 674                                       xfixes_query_cookie, &error);
 675    if (xfixes_query == NULL ||
 676        error != NULL || xfixes_query->major_version < 2) {
 677       _eglLog(_EGL_WARNING, "DRI2: failed to query xfixes version");
 678       free(error);
 679       free(xfixes_query);
 680       return EGL_FALSE;
 681    }
 682    free(xfixes_query);
 683
 684    dri2_query =
 685       xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
 686    if (dri2_query == NULL || error != NULL) {
 687       _eglLog(_EGL_WARNING, "DRI2: failed to query version");
 688       free(error);
 689       return EGL_FALSE;
 690    }
 691    dri2_dpy->dri2_major = dri2_query->major_version;
 692    dri2_dpy->dri2_minor = dri2_query->minor_version;
 693    free(dri2_query);
 694
 695    connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
 696    if (connect == NULL ||
 697        connect->driver_name_length + connect->device_name_length == 0) {
 698       _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
 699       return EGL_FALSE;
 700    }
 701
 702    device_name = xcb_dri2_connect_device_name (connect);
 703
 704    dri2_dpy->fd = loader_open_device(device_name);
 705    if (dri2_dpy->fd == -1) {
 706       _eglLog(_EGL_WARNING,
 707               "DRI2: could not open %s (%s)", device_name, strerror(errno));
 708       free(connect);
 709       return EGL_FALSE;
 710    }
 711
 712    if (!dri2_x11_local_authenticate(dri2_dpy)) {
 713       close(dri2_dpy->fd);
 714       free(connect);
 715       return EGL_FALSE;
 716    }
 717
 718    driver_name = xcb_dri2_connect_driver_name (connect);
 719
 720    /* If Mesa knows about the appropriate driver for this fd, then trust it.
 721     * Otherwise, default to the server's value.
 722     */
 723    loader_driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
 724    if (loader_driver_name) {
 725       dri2_dpy->driver_name = loader_driver_name;
 726    } else {
 727       dri2_dpy->driver_name =
 728          strndup(driver_name,
 729                  xcb_dri2_connect_driver_name_length(connect));
 730    }
 731
 732    if (dri2_dpy->driver_name == NULL) {
 733       close(dri2_dpy->fd);
 734       free(connect);
 735       return EGL_FALSE;
 736    }
 737
 738 #ifdef HAVE_WAYLAND_PLATFORM
 739    dri2_dpy->device_name =
 740       strndup(device_name,
 741               xcb_dri2_connect_device_name_length(connect));
 742 #endif
 743
 744    free(connect);
 745
 746    return EGL_TRUE;
 747 }
 748
 749 static int
 750 dri2_x11_authenticate(_EGLDisplay *disp, uint32_t id)
 751 {
 752    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 753
 754    return dri2_x11_do_authenticate(dri2_dpy, id);
 755 }
 756
 757 static bool
 758 dri2_x11_config_match_attrib(struct dri2_egl_display *dri2_dpy,
 759                              const __DRIconfig *config,
 760                              unsigned int attrib,
 761                              unsigned int value)
 762 {
 763    uint32_t config_val;
 764    if (!dri2_dpy->core->getConfigAttrib(config, attrib, &config_val))
 765       return false;
 766    return config_val == value;
 767 }
 768
 769 static EGLBoolean
 770 dri2_x11_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
 771                                  _EGLDisplay *disp, bool supports_preserved)
 772 {
 773    xcb_depth_iterator_t d;
 774    xcb_visualtype_t *visuals;
 775    int config_count = 0;
 776    EGLint surface_type;
 777
 778    d = xcb_screen_allowed_depths_iterator(dri2_dpy->screen);
 779
 780    surface_type =
 781       EGL_WINDOW_BIT |
 782       EGL_PIXMAP_BIT |
 783       EGL_PBUFFER_BIT;
 784
 785    if (supports_preserved)
 786       surface_type |= EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
 787
 788    while (d.rem > 0) {
 789       EGLBoolean class_added[6] = { 0, };
 790
 791       visuals = xcb_depth_visuals(d.data);
 792
 793       for (int i = 0; i < xcb_depth_visuals_length(d.data); i++) {
 794          if (class_added[visuals[i]._class])
 795             continue;
 796
 797          class_added[visuals[i]._class] = EGL_TRUE;
 798
 799          for (int j = 0; dri2_dpy->driver_configs[j]; j++) {
 800             struct dri2_egl_config *dri2_conf;
 801             const __DRIconfig *config = dri2_dpy->driver_configs[j];
 802
 803             const EGLint config_attrs[] = {
 804                     EGL_NATIVE_VISUAL_ID,    visuals[i].visual_id,
 805                     EGL_NATIVE_VISUAL_TYPE,  visuals[i]._class,
 806                     EGL_NONE
 807             };
 808
 809             unsigned int rgba_masks[4] = {
 810                visuals[i].red_mask,
 811                visuals[i].green_mask,
 812                visuals[i].blue_mask,
 813                0,
 814             };
 815
 816             dri2_conf = dri2_add_config(disp, config, config_count + 1,
 817                                         surface_type, config_attrs,
 818                                         rgba_masks);
 819             if (dri2_conf)
 820                if (dri2_conf->base.ConfigID == config_count + 1)
 821                   config_count++;
 822
 823             /* Allow a 24-bit RGB visual to match a 32-bit RGBA EGLConfig.
 824              * Ditto for 30-bit RGB visuals to match a 32-bit RGBA EGLConfig.
 825              * Otherwise it will only match a 32-bit RGBA visual.  On a
 826              * composited window manager on X11, this will make all of the
 827              * EGLConfigs with destination alpha get blended by the
 828              * compositor.  This is probably not what the application
 829              * wants... especially on drivers that only have 32-bit RGBA
 830              * EGLConfigs! */
 831             if (d.data->depth == 24 || d.data->depth == 30) {
 832                rgba_masks[3] =
 833                   ~(rgba_masks[0] | rgba_masks[1] | rgba_masks[2]);
 834                dri2_conf = dri2_add_config(disp, config, config_count + 1,
 835                                            surface_type, config_attrs,
 836                                            rgba_masks);
 837                if (dri2_conf)
 838                   if (dri2_conf->base.ConfigID == config_count + 1)
 839                      config_count++;
 840             }
 841          }
 842       }
 843
 844       xcb_depth_next(&d);
 845    }
 846
 847    /* Add a 565-no-depth-no-stencil pbuffer-only config.  If X11 is depth 24,
 848     * we wouldn't have 565 available, which the CTS demands.
 849     */
 850    for (int j = 0; dri2_dpy->driver_configs[j]; j++) {
 851       const __DRIconfig *config = dri2_dpy->driver_configs[j];
 852       const EGLint config_attrs[] = {
 853          EGL_NATIVE_VISUAL_ID,    0,
 854          EGL_NATIVE_VISUAL_TYPE,  EGL_NONE,
 855          EGL_NONE
 856       };
 857       EGLint surface_type = EGL_PBUFFER_BIT;
 858       unsigned int rgba_masks[4] = {
 859          0x1f << 11,
 860          0x3f << 5,
 861          0x1f << 0,
 862          0,
 863       };
 864
 865       /* Check that we've found single-sample, no depth, no stencil. */
 866       if (!dri2_x11_config_match_attrib(dri2_dpy, config,
 867                                         __DRI_ATTRIB_DEPTH_SIZE, 0) ||
 868           !dri2_x11_config_match_attrib(dri2_dpy, config,
 869                                         __DRI_ATTRIB_STENCIL_SIZE, 0) ||
 870           !dri2_x11_config_match_attrib(dri2_dpy, config,
 871                                         __DRI_ATTRIB_SAMPLES, 0)) {
 872          continue;
 873       }
 874
 875       if (dri2_add_config(disp, config, config_count + 1, surface_type,
 876                           config_attrs, rgba_masks)) {
 877          config_count++;
 878          break;
 879       }
 880    }
 881
 882    if (!config_count) {
 883       _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
 884       return EGL_FALSE;
 885    }
 886
 887    return EGL_TRUE;
 888 }
 889
 890 static EGLBoolean
 891 dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
 892                  _EGLSurface *draw, xcb_xfixes_region_t region)
 893 {
 894    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 895    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 896    enum xcb_dri2_attachment_t render_attachment;
 897    xcb_dri2_copy_region_cookie_t cookie;
 898
 899    /* No-op for a pixmap or pbuffer surface */
 900    if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
 901       return EGL_TRUE;
 902
 903    dri2_dpy->flush->flush(dri2_surf->dri_drawable);
 904
 905    if (dri2_surf->have_fake_front)
 906       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
 907    else
 908       render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
 909
 910    cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
 911                                            dri2_surf->drawable,
 912                                            region,
 913                                            XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
 914                                            render_attachment);
 915    free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
 916
 917    return EGL_TRUE;
 918 }
 919
 920 static int64_t
 921 dri2_x11_swap_buffers_msc(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
 922                           int64_t msc, int64_t divisor, int64_t remainder)
 923 {
 924    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 925    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 926    uint32_t msc_hi = msc >> 32;
 927    uint32_t msc_lo = msc & 0xffffffff;
 928    uint32_t divisor_hi = divisor >> 32;
 929    uint32_t divisor_lo = divisor & 0xffffffff;
 930    uint32_t remainder_hi = remainder >> 32;
 931    uint32_t remainder_lo = remainder & 0xffffffff;
 932    xcb_dri2_swap_buffers_cookie_t cookie;
 933    xcb_dri2_swap_buffers_reply_t *reply;
 934    int64_t swap_count = -1;
 935
 936    if (draw->SwapBehavior == EGL_BUFFER_PRESERVED || !dri2_dpy->swap_available) {
 937       swap_count = dri2_copy_region(drv, disp, draw, dri2_surf->region) ? 0 : -1;
 938    } else {
 939       dri2_flush_drawable_for_swapbuffers(disp, draw);
 940
 941       cookie = xcb_dri2_swap_buffers_unchecked(dri2_dpy->conn,
 942                                                dri2_surf->drawable, msc_hi,
 943                                                msc_lo, divisor_hi, divisor_lo,
 944                                                remainder_hi, remainder_lo);
 945
 946       reply = xcb_dri2_swap_buffers_reply(dri2_dpy->conn, cookie, NULL);
 947
 948       if (reply) {
 949          swap_count = combine_u32_into_u64(reply->swap_hi, reply->swap_lo);
 950          free(reply);
 951       }
 952    }
 953
 954    /* Since we aren't watching for the server's invalidate events like we're
 955     * supposed to (due to XCB providing no mechanism for filtering the events
 956     * the way xlib does), and SwapBuffers is a common cause of invalidate
 957     * events, just shove one down to the driver, even though we haven't told
 958     * the driver that we're the kind of loader that provides reliable
 959     * invalidate events.  This causes the driver to request buffers again at
 960     * its next draw, so that we get the correct buffers if a pageflip
 961     * happened.  The driver should still be using the viewport hack to catch
 962     * window resizes.
 963     */
 964    if (dri2_dpy->flush->base.version >= 3 && dri2_dpy->flush->invalidate)
 965       dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 966
 967    return swap_count;
 968 }
 969
 970 static EGLBoolean
 971 dri2_x11_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 972 {
 973    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 974    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 975
 976    if (!dri2_dpy->flush) {
 977       dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
 978       return EGL_TRUE;
 979    }
 980
 981    if (dri2_x11_swap_buffers_msc(drv, disp, draw, 0, 0, 0) == -1) {
 982       /* Swap failed with a window drawable. */
 983       return _eglError(EGL_BAD_NATIVE_WINDOW, __func__);
 984    }
 985    return EGL_TRUE;
 986 }
 987
 988 static EGLBoolean
 989 dri2_x11_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp,
 990                              _EGLSurface *draw,
 991                              EGLint numRects, const EGLint *rects)
 992 {
 993    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 994    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 995    EGLBoolean ret;
 996    xcb_xfixes_region_t region;
 997    xcb_rectangle_t rectangles[16];
 998
 999    if (numRects > (int)ARRAY_SIZE(rectangles))
1000       return dri2_copy_region(drv, disp, draw, dri2_surf->region);
1001
1002    for (int i = 0; i < numRects; i++) {
1003       rectangles[i].x = rects[i * 4];
1004       rectangles[i].y = dri2_surf->base.Height - rects[i * 4 + 1] - rects[i * 4 + 3];
1005       rectangles[i].width = rects[i * 4 + 2];
1006       rectangles[i].height = rects[i * 4 + 3];
1007    }
1008
1009    region = xcb_generate_id(dri2_dpy->conn);
1010    xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles);
1011    ret = dri2_copy_region(drv, disp, draw, region);
1012    xcb_xfixes_destroy_region(dri2_dpy->conn, region);
1013
1014    return ret;
1015 }
1016
1017 static EGLBoolean
1018 dri2_x11_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
1019                      EGLint x, EGLint y, EGLint width, EGLint height)
1020 {
1021    const EGLint rect[4] = { x, y, width, height };
1022
1023    if (x < 0 || y < 0 || width < 0 || height < 0)
1024       _eglError(EGL_BAD_PARAMETER, "eglPostSubBufferNV");
1025
1026    return dri2_x11_swap_buffers_region(drv, disp, draw, 1, rect);
1027 }
1028
1029 static EGLBoolean
1030 dri2_x11_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1031                        EGLint interval)
1032 {
1033    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1034    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1035
1036    if (dri2_dpy->swap_available)
1037       xcb_dri2_swap_interval(dri2_dpy->conn, dri2_surf->drawable, interval);
1038
1039    return EGL_TRUE;
1040 }
1041
1042 static EGLBoolean
1043 dri2_x11_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1044                       void *native_pixmap_target)
1045 {
1046    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1047    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1048    xcb_gcontext_t gc;
1049    xcb_pixmap_t target;
1050
1051    STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_pixmap_target));
1052    target = (uintptr_t) native_pixmap_target;
1053
1054    (void) drv;
1055
1056    dri2_dpy->flush->flush(dri2_surf->dri_drawable);
1057
1058    gc = xcb_generate_id(dri2_dpy->conn);
1059    xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
1060    xcb_copy_area(dri2_dpy->conn,
1061                   dri2_surf->drawable,
1062                   target,
1063                   gc,
1064                   0, 0,
1065                   0, 0,
1066                   dri2_surf->base.Width,
1067                   dri2_surf->base.Height);
1068    xcb_free_gc(dri2_dpy->conn, gc);
1069
1070    return EGL_TRUE;
1071 }
1072
1073 uint32_t
1074 dri2_format_for_depth(struct dri2_egl_display *dri2_dpy, uint32_t depth)
1075 {
1076    switch (depth) {
1077    case 16:
1078       return __DRI_IMAGE_FORMAT_RGB565;
1079    case 24:
1080       return __DRI_IMAGE_FORMAT_XRGB8888;
1081    case 30:
1082       /* Different preferred formats for different hw */
1083       if (dri2_x11_get_red_mask_for_depth(dri2_dpy, 30) == 0x3ff)
1084          return __DRI_IMAGE_FORMAT_XBGR2101010;
1085       else
1086          return __DRI_IMAGE_FORMAT_XRGB2101010;
1087    case 32:
1088       return __DRI_IMAGE_FORMAT_ARGB8888;
1089    default:
1090       return __DRI_IMAGE_FORMAT_NONE;
1091    }
1092 }
1093
1094 static _EGLImage *
1095 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
1096                              EGLClientBuffer buffer, const EGLint *attr_list)
1097 {
1098    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1099    struct dri2_egl_image *dri2_img;
1100    unsigned int attachments[1];
1101    xcb_drawable_t drawable;
1102    xcb_dri2_get_buffers_cookie_t buffers_cookie;
1103    xcb_dri2_get_buffers_reply_t *buffers_reply;
1104    xcb_dri2_dri2_buffer_t *buffers;
1105    xcb_get_geometry_cookie_t geometry_cookie;
1106    xcb_get_geometry_reply_t *geometry_reply;
1107    xcb_generic_error_t *error;
1108    int stride, format;
1109
1110    (void) ctx;
1111
1112    drawable = (xcb_drawable_t) (uintptr_t) buffer;
1113    xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
1114    attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
1115    buffers_cookie =
1116       xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
1117                                       drawable, 1, 1, attachments);
1118    geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
1119    buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
1120                                                buffers_cookie, NULL);
1121    if (buffers_reply == NULL)
1122      return NULL;
1123
1124    buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
1125    if (buffers == NULL) {
1126       return NULL;
1127    }
1128
1129    geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
1130                                             geometry_cookie, &error);
1131    if (geometry_reply == NULL || error != NULL) {
1132       _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
1133       free(error);
1134       free(buffers_reply);
1135       return NULL;
1136    }
1137
1138    format = dri2_format_for_depth(dri2_dpy, geometry_reply->depth);
1139    if (format == __DRI_IMAGE_FORMAT_NONE) {
1140       _eglError(EGL_BAD_PARAMETER,
1141                 "dri2_create_image_khr: unsupported pixmap depth");
1142       free(buffers_reply);
1143       free(geometry_reply);
1144       return NULL;
1145    }
1146
1147    dri2_img = malloc(sizeof *dri2_img);
1148    if (!dri2_img) {
1149       free(buffers_reply);
1150       free(geometry_reply);
1151       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1152       return EGL_NO_IMAGE_KHR;
1153    }
1154
1155    _eglInitImage(&dri2_img->base, disp);
1156
1157    stride = buffers[0].pitch / buffers[0].cpp;
1158    dri2_img->dri_image =
1159       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1160                                            buffers_reply->width,
1161                                            buffers_reply->height,
1162                                            format,
1163                                            buffers[0].name,
1164                                            stride,
1165                                            dri2_img);
1166
1167    free(buffers_reply);
1168    free(geometry_reply);
1169
1170    return &dri2_img->base;
1171 }
1172
1173 static _EGLImage *
1174 dri2_x11_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1175                           _EGLContext *ctx, EGLenum target,
1176                           EGLClientBuffer buffer, const EGLint *attr_list)
1177 {
1178    (void) drv;
1179
1180    switch (target) {
1181    case EGL_NATIVE_PIXMAP_KHR:
1182       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
1183    default:
1184       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
1185    }
1186 }
1187
1188 static EGLBoolean
1189 dri2_x11_get_sync_values(_EGLDisplay *display, _EGLSurface *surface,
1190                          EGLuint64KHR *ust, EGLuint64KHR *msc,
1191                          EGLuint64KHR *sbc)
1192 {
1193    struct dri2_egl_display *dri2_dpy = dri2_egl_display(display);
1194    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
1195    xcb_dri2_get_msc_cookie_t cookie;
1196    xcb_dri2_get_msc_reply_t *reply;
1197
1198    cookie = xcb_dri2_get_msc(dri2_dpy->conn, dri2_surf->drawable);
1199    reply = xcb_dri2_get_msc_reply(dri2_dpy->conn, cookie, NULL);
1200
1201    if (!reply)
1202       return _eglError(EGL_BAD_ACCESS, __func__);
1203
1204    *ust = ((EGLuint64KHR) reply->ust_hi << 32) | reply->ust_lo;
1205    *msc = ((EGLuint64KHR) reply->msc_hi << 32) | reply->msc_lo;
1206    *sbc = ((EGLuint64KHR) reply->sbc_hi << 32) | reply->sbc_lo;
1207    free(reply);
1208
1209    return EGL_TRUE;
1210 }
1211
1212 static const struct dri2_egl_display_vtbl dri2_x11_swrast_display_vtbl = {
1213    .authenticate = NULL,
1214    .create_window_surface = dri2_x11_create_window_surface,
1215    .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1216    .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1217    .destroy_surface = dri2_x11_destroy_surface,
1218    .create_image = dri2_create_image_khr,
1219    .swap_buffers = dri2_x11_swap_buffers,
1220    .set_damage_region = dri2_fallback_set_damage_region,
1221    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1222    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1223    /* XXX: should really implement this since X11 has pixmaps */
1224    .copy_buffers = dri2_fallback_copy_buffers,
1225    .query_buffer_age = dri2_fallback_query_buffer_age,
1226    .query_surface = dri2_query_surface,
1227    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1228    .get_sync_values = dri2_fallback_get_sync_values,
1229    .get_dri_drawable = dri2_surface_get_dri_drawable,
1230 };
1231
1232 static const struct dri2_egl_display_vtbl dri2_x11_display_vtbl = {
1233    .authenticate = dri2_x11_authenticate,
1234    .create_window_surface = dri2_x11_create_window_surface,
1235    .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1236    .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1237    .destroy_surface = dri2_x11_destroy_surface,
1238    .create_image = dri2_x11_create_image_khr,
1239    .swap_interval = dri2_x11_swap_interval,
1240    .swap_buffers = dri2_x11_swap_buffers,
1241    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1242    .swap_buffers_region = dri2_x11_swap_buffers_region,
1243    .set_damage_region = dri2_fallback_set_damage_region,
1244    .post_sub_buffer = dri2_x11_post_sub_buffer,
1245    .copy_buffers = dri2_x11_copy_buffers,
1246    .query_buffer_age = dri2_fallback_query_buffer_age,
1247    .query_surface = dri2_query_surface,
1248    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1249    .get_sync_values = dri2_x11_get_sync_values,
1250    .get_dri_drawable = dri2_surface_get_dri_drawable,
1251 };
1252
1253 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1254    .base = { __DRI_SWRAST_LOADER, 1 },
1255
1256    .getDrawableInfo = swrastGetDrawableInfo,
1257    .putImage        = swrastPutImage,
1258    .getImage        = swrastGetImage,
1259 };
1260
1261 static const __DRIextension *swrast_loader_extensions[] = {
1262    &swrast_loader_extension.base,
1263    &image_lookup_extension.base,
1264    NULL,
1265 };
1266
1267 static int
1268 dri2_find_screen_for_display(const _EGLDisplay *disp, int fallback_screen)
1269 {
1270    const EGLAttrib *attr;
1271
1272    for (attr = disp->Options.Attribs; attr; attr += 2) {
1273       if (attr[0] == EGL_PLATFORM_X11_SCREEN_EXT)
1274          return attr[1];
1275    }
1276
1277    return fallback_screen;
1278 }
1279
1280 static EGLBoolean
1281 dri2_get_xcb_connection(_EGLDriver *drv, _EGLDisplay *disp,
1282                         struct dri2_egl_display *dri2_dpy)
1283 {
1284    xcb_screen_iterator_t s;
1285    int screen;
1286    const char *msg;
1287
1288    disp->DriverData = (void *) dri2_dpy;
1289    if (disp->PlatformDisplay == NULL) {
1290       dri2_dpy->conn = xcb_connect(NULL, &screen);
1291       dri2_dpy->own_device = true;
1292       screen = dri2_find_screen_for_display(disp, screen);
1293    } else {
1294       Display *dpy = disp->PlatformDisplay;
1295       dri2_dpy->conn = XGetXCBConnection(dpy);
1296       screen = DefaultScreen(dpy);
1297    }
1298
1299    if (!dri2_dpy->conn || xcb_connection_has_error(dri2_dpy->conn)) {
1300       msg = "xcb_connect failed";
1301       goto disconnect;
1302    }
1303
1304    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
1305    dri2_dpy->screen = get_xcb_screen(s, screen);
1306    if (!dri2_dpy->screen) {
1307       msg = "failed to get xcb screen";
1308       goto disconnect;
1309    }
1310
1311    return EGL_TRUE;
1312 disconnect:
1313    if (disp->PlatformDisplay == NULL)
1314       xcb_disconnect(dri2_dpy->conn);
1315
1316    return _eglError(EGL_BAD_ALLOC, msg);
1317 }
1318
1319 static EGLBoolean
1320 dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1321 {
1322    _EGLDevice *dev;
1323    struct dri2_egl_display *dri2_dpy;
1324
1325    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1326    if (!dri2_dpy)
1327       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1328
1329    dri2_dpy->fd = -1;
1330    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1331       goto cleanup;
1332
1333    dev = _eglAddDevice(dri2_dpy->fd, true);
1334    if (!dev) {
1335       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1336       goto cleanup;
1337    }
1338
1339    disp->Device = dev;
1340
1341    /*
1342     * Every hardware driver_name is set using strdup. Doing the same in
1343     * here will allow is to simply free the memory at dri2_terminate().
1344     */
1345    dri2_dpy->driver_name = strdup("swrast");
1346    if (!dri2_load_driver_swrast(disp))
1347       goto cleanup;
1348
1349    dri2_dpy->loader_extensions = swrast_loader_extensions;
1350
1351    if (!dri2_create_screen(disp))
1352       goto cleanup;
1353
1354    if (!dri2_setup_extensions(disp))
1355       goto cleanup;
1356
1357    dri2_setup_screen(disp);
1358
1359    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
1360       goto cleanup;
1361
1362    /* Fill vtbl last to prevent accidentally calling virtual function during
1363     * initialization.
1364     */
1365    dri2_dpy->vtbl = &dri2_x11_swrast_display_vtbl;
1366
1367    return EGL_TRUE;
1368
1369  cleanup:
1370    dri2_display_destroy(disp);
1371    return EGL_FALSE;
1372 }
1373
1374 static void
1375 dri2_x11_setup_swap_interval(_EGLDisplay *disp)
1376 {
1377    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1378    int arbitrary_max_interval = 1000;
1379
1380    /* default behavior for no SwapBuffers support: no vblank syncing
1381     * either.
1382     */
1383    dri2_dpy->min_swap_interval = 0;
1384    dri2_dpy->max_swap_interval = 0;
1385    dri2_dpy->default_swap_interval = 0;
1386
1387    if (!dri2_dpy->swap_available)
1388       return;
1389
1390    /* If we do have swapbuffers, then we can support pretty much any swap
1391     * interval.
1392     */
1393    dri2_setup_swap_interval(disp, arbitrary_max_interval);
1394 }
1395
1396 #ifdef HAVE_DRI3
1397
1398 static const __DRIextension *dri3_image_loader_extensions[] = {
1399    &dri3_image_loader_extension.base,
1400    &image_lookup_extension.base,
1401    &use_invalidate.base,
1402    &background_callable_extension.base,
1403    NULL,
1404 };
1405
1406 static EGLBoolean
1407 dri2_initialize_x11_dri3(_EGLDriver *drv, _EGLDisplay *disp)
1408 {
1409    _EGLDevice *dev;
1410    struct dri2_egl_display *dri2_dpy;
1411
1412    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1413    if (!dri2_dpy)
1414       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1415
1416    dri2_dpy->fd = -1;
1417    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1418       goto cleanup;
1419
1420    if (!dri3_x11_connect(dri2_dpy))
1421       goto cleanup;
1422
1423    dev = _eglAddDevice(dri2_dpy->fd, false);
1424    if (!dev) {
1425       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1426       goto cleanup;
1427    }
1428
1429    disp->Device = dev;
1430
1431    if (!dri2_load_driver_dri3(disp))
1432       goto cleanup;
1433
1434    dri2_dpy->loader_extensions = dri3_image_loader_extensions;
1435
1436    dri2_dpy->swap_available = true;
1437    dri2_dpy->invalidate_available = true;
1438
1439    if (!dri2_create_screen(disp))
1440       goto cleanup;
1441
1442    if (!dri2_setup_extensions(disp))
1443       goto cleanup;
1444
1445    dri2_setup_screen(disp);
1446
1447    dri2_x11_setup_swap_interval(disp);
1448
1449    if (!dri2_dpy->is_different_gpu)
1450       disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1451    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1452    disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1453    disp->Extensions.EXT_buffer_age = EGL_TRUE;
1454
1455    dri2_set_WL_bind_wayland_display(drv, disp);
1456
1457    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, false))
1458       goto cleanup;
1459
1460    dri2_dpy->loader_dri3_ext.core = dri2_dpy->core;
1461    dri2_dpy->loader_dri3_ext.image_driver = dri2_dpy->image_driver;
1462    dri2_dpy->loader_dri3_ext.flush = dri2_dpy->flush;
1463    dri2_dpy->loader_dri3_ext.tex_buffer = dri2_dpy->tex_buffer;
1464    dri2_dpy->loader_dri3_ext.image = dri2_dpy->image;
1465    dri2_dpy->loader_dri3_ext.config = dri2_dpy->config;
1466
1467    /* Fill vtbl last to prevent accidentally calling virtual function during
1468     * initialization.
1469     */
1470    dri2_dpy->vtbl = &dri3_x11_display_vtbl;
1471
1472    _eglLog(_EGL_INFO, "Using DRI3");
1473
1474    return EGL_TRUE;
1475
1476  cleanup:
1477    dri2_display_destroy(disp);
1478    return EGL_FALSE;
1479 }
1480 #endif
1481
1482 static const __DRIdri2LoaderExtension dri2_loader_extension_old = {
1483    .base = { __DRI_DRI2_LOADER, 2 },
1484
1485    .getBuffers           = dri2_x11_get_buffers,
1486    .flushFrontBuffer     = dri2_x11_flush_front_buffer,
1487    .getBuffersWithFormat = NULL,
1488 };
1489
1490 static const __DRIdri2LoaderExtension dri2_loader_extension = {
1491    .base = { __DRI_DRI2_LOADER, 3 },
1492
1493    .getBuffers           = dri2_x11_get_buffers,
1494    .flushFrontBuffer     = dri2_x11_flush_front_buffer,
1495    .getBuffersWithFormat = dri2_x11_get_buffers_with_format,
1496 };
1497
1498 static const __DRIextension *dri2_loader_extensions_old[] = {
1499    &dri2_loader_extension_old.base,
1500    &image_lookup_extension.base,
1501    &background_callable_extension.base,
1502    NULL,
1503 };
1504
1505 static const __DRIextension *dri2_loader_extensions[] = {
1506    &dri2_loader_extension.base,
1507    &image_lookup_extension.base,
1508    &use_invalidate.base,
1509    &background_callable_extension.base,
1510    NULL,
1511 };
1512
1513 static EGLBoolean
1514 dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp)
1515 {
1516    _EGLDevice *dev;
1517    struct dri2_egl_display *dri2_dpy;
1518
1519    dri2_dpy = calloc(1, sizeof *dri2_dpy);
1520    if (!dri2_dpy)
1521       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1522
1523    dri2_dpy->fd = -1;
1524    if (!dri2_get_xcb_connection(drv, disp, dri2_dpy))
1525       goto cleanup;
1526
1527    if (!dri2_x11_connect(dri2_dpy))
1528       goto cleanup;
1529
1530    dev = _eglAddDevice(dri2_dpy->fd, false);
1531    if (!dev) {
1532       _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1533       goto cleanup;
1534    }
1535
1536    disp->Device = dev;
1537
1538    if (!dri2_load_driver(disp))
1539       goto cleanup;
1540
1541    if (dri2_dpy->dri2_minor >= 1)
1542       dri2_dpy->loader_extensions = dri2_loader_extensions;
1543    else
1544       dri2_dpy->loader_extensions = dri2_loader_extensions_old;
1545
1546    dri2_dpy->swap_available = (dri2_dpy->dri2_minor >= 2);
1547    dri2_dpy->invalidate_available = (dri2_dpy->dri2_minor >= 3);
1548
1549    if (!dri2_create_screen(disp))
1550       goto cleanup;
1551
1552    if (!dri2_setup_extensions(disp))
1553       goto cleanup;
1554
1555    dri2_setup_screen(disp);
1556
1557    dri2_x11_setup_swap_interval(disp);
1558
1559    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1560    disp->Extensions.NOK_swap_region = EGL_TRUE;
1561    disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1562    disp->Extensions.NV_post_sub_buffer = EGL_TRUE;
1563    disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1564
1565    dri2_set_WL_bind_wayland_display(drv, disp);
1566
1567    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
1568       goto cleanup;
1569
1570    /* Fill vtbl last to prevent accidentally calling virtual function during
1571     * initialization.
1572     */
1573    dri2_dpy->vtbl = &dri2_x11_display_vtbl;
1574
1575    _eglLog(_EGL_INFO, "Using DRI2");
1576
1577    return EGL_TRUE;
1578
1579  cleanup:
1580    dri2_display_destroy(disp);
1581    return EGL_FALSE;
1582 }
1583
1584 EGLBoolean
1585 dri2_initialize_x11(_EGLDriver *drv, _EGLDisplay *disp)
1586 {
1587    EGLBoolean initialized = EGL_FALSE;
1588
1589    if (!disp->Options.ForceSoftware) {
1590 #ifdef HAVE_DRI3
1591       if (!env_var_as_boolean("LIBGL_DRI3_DISABLE", false))
1592          initialized = dri2_initialize_x11_dri3(drv, disp);
1593 #endif
1594
1595       if (!initialized)
1596          initialized = dri2_initialize_x11_dri2(drv, disp);
1597    }
1598
1599    if (!initialized)
1600       initialized = dri2_initialize_x11_swrast(drv, disp);
1601
1602    return initialized;
1603 }
1604
1605 void
1606 dri2_teardown_x11(struct dri2_egl_display *dri2_dpy)
1607 {
1608    if (dri2_dpy->own_device)
1609       xcb_disconnect(dri2_dpy->conn);
1610 }