src/egl/drivers/dri2/egl_dri2.c

   1 /*
   2  * Copyright © 2010 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 <GL/gl.h>
  38 #include <GL/internal/dri_interface.h>
  39 #include <xcb/xcb.h>
  40 #include <xcb/dri2.h>
  41 #include <xcb/xfixes.h>
  42 #include <X11/Xlib-xcb.h>
  43
  44 #include <glapi/glapi.h>
  45 #include "eglconfig.h"
  46 #include "eglcontext.h"
  47 #include "egldisplay.h"
  48 #include "egldriver.h"
  49 #include "eglcurrent.h"
  50 #include "egllog.h"
  51 #include "eglsurface.h"
  52 #include "eglimage.h"
  53
  54 struct dri2_egl_driver
  55 {
  56    _EGLDriver base;
  57
  58    void (*glFlush)(void);
  59 };
  60
  61 struct dri2_egl_display
  62 {
  63    xcb_connection_t         *conn;
  64    int                       dri2_major;
  65    int                       dri2_minor;
  66    __DRIscreen              *dri_screen;
  67    const __DRIconfig       **driver_configs;
  68    void                     *driver;
  69    __DRIcoreExtension       *core;
  70    __DRIdri2Extension       *dri2;
  71    __DRI2flushExtension     *flush;
  72    __DRItexBufferExtension  *tex_buffer;
  73    __DRIimageExtension      *image;
  74    int                       fd;
  75
  76    char                     *device_name;
  77    char                     *driver_name;
  78
  79    __DRIdri2LoaderExtension  loader_extension;
  80    __DRIimageLookupExtension image_lookup_extension;
  81    const __DRIextension     *extensions[3];
  82 };
  83
  84 struct dri2_egl_context
  85 {
  86    _EGLContext   base;
  87    __DRIcontext *dri_context;
  88 };
  89
  90 struct dri2_egl_surface
  91 {
  92    _EGLSurface          base;
  93    __DRIdrawable       *dri_drawable;
  94    xcb_drawable_t       drawable;
  95    __DRIbuffer          buffers[5];
  96    int                  buffer_count;
  97    xcb_xfixes_region_t  region;
  98    int                  have_fake_front;
  99    int                  swap_interval;
 100 };
 101
 102 struct dri2_egl_config
 103 {
 104    _EGLConfig         base;
 105    const __DRIconfig *dri_config;
 106 };
 107
 108 struct dri2_egl_image
 109 {
 110    _EGLImage   base;
 111    __DRIimage *dri_image;
 112 };
 113
 114 /* standard typecasts */
 115 _EGL_DRIVER_STANDARD_TYPECASTS(dri2_egl)
 116 _EGL_DRIVER_TYPECAST(dri2_egl_image, _EGLImage, obj)
 117
 118 EGLint dri2_to_egl_attribute_map[] = {
 119    0,
 120    EGL_BUFFER_SIZE,             /* __DRI_ATTRIB_BUFFER_SIZE */
 121    EGL_LEVEL,                   /* __DRI_ATTRIB_LEVEL */
 122    EGL_RED_SIZE,                /* __DRI_ATTRIB_RED_SIZE */
 123    EGL_GREEN_SIZE,              /* __DRI_ATTRIB_GREEN_SIZE */
 124    EGL_BLUE_SIZE,               /* __DRI_ATTRIB_BLUE_SIZE */
 125    EGL_LUMINANCE_SIZE,          /* __DRI_ATTRIB_LUMINANCE_SIZE */
 126    EGL_ALPHA_SIZE,              /* __DRI_ATTRIB_ALPHA_SIZE */
 127    0,                           /* __DRI_ATTRIB_ALPHA_MASK_SIZE */
 128    EGL_DEPTH_SIZE,              /* __DRI_ATTRIB_DEPTH_SIZE */
 129    EGL_STENCIL_SIZE,            /* __DRI_ATTRIB_STENCIL_SIZE */
 130    0,                           /* __DRI_ATTRIB_ACCUM_RED_SIZE */
 131    0,                           /* __DRI_ATTRIB_ACCUM_GREEN_SIZE */
 132    0,                           /* __DRI_ATTRIB_ACCUM_BLUE_SIZE */
 133    0,                           /* __DRI_ATTRIB_ACCUM_ALPHA_SIZE */
 134    EGL_SAMPLE_BUFFERS,          /* __DRI_ATTRIB_SAMPLE_BUFFERS */
 135    EGL_SAMPLES,                 /* __DRI_ATTRIB_SAMPLES */
 136    0,                           /* __DRI_ATTRIB_RENDER_TYPE, */
 137    0,                           /* __DRI_ATTRIB_CONFIG_CAVEAT */
 138    0,                           /* __DRI_ATTRIB_CONFORMANT */
 139    0,                           /* __DRI_ATTRIB_DOUBLE_BUFFER */
 140    0,                           /* __DRI_ATTRIB_STEREO */
 141    0,                           /* __DRI_ATTRIB_AUX_BUFFERS */
 142    0,                           /* __DRI_ATTRIB_TRANSPARENT_TYPE */
 143    0,                           /* __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE */
 144    0,                           /* __DRI_ATTRIB_TRANSPARENT_RED_VALUE */
 145    0,                           /* __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE */
 146    0,                           /* __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE */
 147    0,                           /* __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE */
 148    0,                           /* __DRI_ATTRIB_FLOAT_MODE */
 149    0,                           /* __DRI_ATTRIB_RED_MASK */
 150    0,                           /* __DRI_ATTRIB_GREEN_MASK */
 151    0,                           /* __DRI_ATTRIB_BLUE_MASK */
 152    0,                           /* __DRI_ATTRIB_ALPHA_MASK */
 153    EGL_MAX_PBUFFER_WIDTH,       /* __DRI_ATTRIB_MAX_PBUFFER_WIDTH */
 154    EGL_MAX_PBUFFER_HEIGHT,      /* __DRI_ATTRIB_MAX_PBUFFER_HEIGHT */
 155    EGL_MAX_PBUFFER_PIXELS,      /* __DRI_ATTRIB_MAX_PBUFFER_PIXELS */
 156    0,                           /* __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH */
 157    0,                           /* __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT */
 158    0,                           /* __DRI_ATTRIB_VISUAL_SELECT_GROUP */
 159    0,                           /* __DRI_ATTRIB_SWAP_METHOD */
 160    EGL_MAX_SWAP_INTERVAL,       /* __DRI_ATTRIB_MAX_SWAP_INTERVAL */
 161    EGL_MIN_SWAP_INTERVAL,       /* __DRI_ATTRIB_MIN_SWAP_INTERVAL */
 162    0,                           /* __DRI_ATTRIB_BIND_TO_TEXTURE_RGB */
 163    0,                           /* __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA */
 164    0,                           /* __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE */
 165    0,                           /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS */
 166    0,                           /* __DRI_ATTRIB_YINVERTED */
 167 };
 168
 169 static void
 170 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 171                 int depth, xcb_visualtype_t *visual)
 172 {
 173    struct dri2_egl_config *conf;
 174    struct dri2_egl_display *dri2_dpy;
 175    _EGLConfig base;
 176    unsigned int attrib, value, double_buffer;
 177    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 178    int i;
 179
 180    dri2_dpy = disp->DriverData;
 181    _eglInitConfig(&base, disp, id);
 182
 183    i = 0;
 184    while (dri2_dpy->core->indexConfigAttrib(dri_config, i++, &attrib, &value)) {
 185       switch (attrib) {
 186       case __DRI_ATTRIB_RENDER_TYPE:
 187          if (value & __DRI_ATTRIB_RGBA_BIT)
 188             value = EGL_RGB_BUFFER;
 189          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 190             value = EGL_LUMINANCE_BUFFER;
 191          else
 192             /* not valid */;
 193          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 194          break;
 195
 196       case __DRI_ATTRIB_CONFIG_CAVEAT:
 197          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 198             value = EGL_NON_CONFORMANT_CONFIG;
 199          else if (value & __DRI_ATTRIB_SLOW_BIT)
 200             value = EGL_SLOW_CONFIG;
 201          else
 202             value = EGL_NONE;
 203          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 204          break;
 205
 206       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 207          bind_to_texture_rgb = value;
 208          break;
 209
 210       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 211          bind_to_texture_rgba = value;
 212          break;
 213
 214       case __DRI_ATTRIB_DOUBLE_BUFFER:
 215          double_buffer = value;
 216          break;
 217
 218       default:
 219          key = dri2_to_egl_attribute_map[attrib];
 220          if (key != 0)
 221             _eglSetConfigKey(&base, key, value);
 222          break;
 223       }
 224    }
 225
 226    /* In EGL, double buffer or not isn't a config attribute.  Pixmaps
 227     * surfaces are always single buffered, pbuffer surfaces are always
 228     * back buffers and windows can be either, selected by passing an
 229     * attribute at window surface construction time.  To support this
 230     * we ignore all double buffer configs and manipulate the buffer we
 231     * return in the getBuffer callback to get the behaviour we want. */
 232
 233    if (double_buffer)
 234       return;
 235
 236    if (visual != NULL) {
 237       if (depth != _eglGetConfigKey(&base, EGL_BUFFER_SIZE))
 238          return;
 239
 240       _eglSetConfigKey(&base, EGL_SURFACE_TYPE,
 241                        EGL_WINDOW_BIT | EGL_PIXMAP_BIT | EGL_PBUFFER_BIT |
 242                        EGL_SWAP_BEHAVIOR_PRESERVED_BIT);
 243
 244       _eglSetConfigKey(&base, EGL_NATIVE_VISUAL_ID, visual->visual_id);
 245       _eglSetConfigKey(&base, EGL_NATIVE_VISUAL_TYPE, visual->_class);
 246    } else {
 247       _eglSetConfigKey(&base, EGL_SURFACE_TYPE,
 248                        EGL_PIXMAP_BIT | EGL_PBUFFER_BIT);
 249    }
 250
 251    _eglSetConfigKey(&base, EGL_NATIVE_RENDERABLE, EGL_TRUE);
 252    _eglSetConfigKey(&base, EGL_BIND_TO_TEXTURE_RGB, bind_to_texture_rgb);
 253    if (_eglGetConfigKey(&base, EGL_ALPHA_SIZE) > 0)
 254       _eglSetConfigKey(&base,
 255                        EGL_BIND_TO_TEXTURE_RGBA, bind_to_texture_rgba);
 256
 257    /* EGL_OPENGL_ES_BIT, EGL_OPENVG_BIT, EGL_OPENGL_ES2_BIT */
 258    _eglSetConfigKey(&base, EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT);
 259    _eglSetConfigKey(&base, EGL_CONFORMANT, EGL_OPENGL_BIT);
 260
 261    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 262       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 263       return;
 264    }
 265
 266    conf = malloc(sizeof *conf);
 267    if (conf != NULL) {
 268       memcpy(&conf->base, &base, sizeof base);
 269       conf->dri_config = dri_config;
 270       _eglAddConfig(disp, &conf->base);
 271    }
 272 }
 273
 274 /**
 275  * Process list of buffer received from the server
 276  *
 277  * Processes the list of buffers received in a reply from the server to either
 278  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 279  */
 280 static void
 281 dri2_process_buffers(struct dri2_egl_surface *dri2_surf,
 282                      xcb_dri2_dri2_buffer_t *buffers, unsigned count)
 283 {
 284    struct dri2_egl_display *dri2_dpy =
 285       dri2_egl_display(dri2_surf->base.Resource.Display);
 286    xcb_rectangle_t rectangle;
 287    int i;
 288
 289    dri2_surf->buffer_count = count;
 290    dri2_surf->have_fake_front = 0;
 291
 292    /* This assumes the DRI2 buffer attachment tokens matches the
 293     * __DRIbuffer tokens. */
 294    for (i = 0; i < count; i++) {
 295       dri2_surf->buffers[i].attachment = buffers[i].attachment;
 296       dri2_surf->buffers[i].name = buffers[i].name;
 297       dri2_surf->buffers[i].pitch = buffers[i].pitch;
 298       dri2_surf->buffers[i].cpp = buffers[i].cpp;
 299       dri2_surf->buffers[i].flags = buffers[i].flags;
 300
 301       /* We only use the DRI drivers single buffer configs.  This
 302        * means that if we try to render to a window, DRI2 will give us
 303        * the fake front buffer, which we'll use as a back buffer.
 304        * Note that EGL doesn't require that several clients rendering
 305        * to the same window must see the same aux buffers. */
 306       if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 307          dri2_surf->have_fake_front = 1;
 308    }
 309
 310    if (dri2_surf->region != XCB_NONE)
 311       xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
 312
 313    rectangle.x = 0;
 314    rectangle.y = 0;
 315    rectangle.width = dri2_surf->base.Width;
 316    rectangle.height = dri2_surf->base.Height;
 317    dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
 318    xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
 319 }
 320
 321 static __DRIbuffer *
 322 dri2_get_buffers(__DRIdrawable * driDrawable,
 323                 int *width, int *height,
 324                 unsigned int *attachments, int count,
 325                 int *out_count, void *loaderPrivate)
 326 {
 327    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 328    struct dri2_egl_display *dri2_dpy =
 329       dri2_egl_display(dri2_surf->base.Resource.Display);
 330    xcb_dri2_dri2_buffer_t *buffers;
 331    xcb_dri2_get_buffers_reply_t *reply;
 332    xcb_dri2_get_buffers_cookie_t cookie;
 333
 334    cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
 335                                             dri2_surf->drawable,
 336                                             count, count, attachments);
 337    reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
 338    buffers = xcb_dri2_get_buffers_buffers (reply);
 339    if (buffers == NULL)
 340       return NULL;
 341
 342    *out_count = reply->count;
 343    dri2_surf->base.Width = *width = reply->width;
 344    dri2_surf->base.Height = *height = reply->height;
 345    dri2_process_buffers(dri2_surf, buffers, *out_count);
 346
 347    free(reply);
 348
 349    return dri2_surf->buffers;
 350 }
 351
 352 static void
 353 dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 354 {
 355    /* FIXME: Does EGL support front buffer rendering at all? */
 356
 357 #if 0
 358    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 359
 360    dri2WaitGL(dri2_surf);
 361 #endif
 362 }
 363
 364 static __DRIimage *
 365 dri2_lookup_egl_image(__DRIcontext *context, void *image, void *data)
 366 {
 367    struct dri2_egl_context *dri2_ctx = data;
 368    _EGLDisplay *disp = dri2_ctx->base.Resource.Display;
 369    struct dri2_egl_image *dri2_img;
 370    _EGLImage *img;
 371
 372    img = _eglLookupImage(image, disp);
 373    if (img == NULL) {
 374       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 375       return NULL;
 376    }
 377
 378    dri2_img = dri2_egl_image(image);
 379
 380    return dri2_img->dri_image;
 381 }
 382
 383 static __DRIbuffer *
 384 dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
 385                              int *width, int *height,
 386                              unsigned int *attachments, int count,
 387                              int *out_count, void *loaderPrivate)
 388 {
 389    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 390    struct dri2_egl_display *dri2_dpy =
 391       dri2_egl_display(dri2_surf->base.Resource.Display);
 392    xcb_dri2_dri2_buffer_t *buffers;
 393    xcb_dri2_get_buffers_with_format_reply_t *reply;
 394    xcb_dri2_get_buffers_with_format_cookie_t cookie;
 395    xcb_dri2_attach_format_t *format_attachments;
 396
 397    format_attachments = (xcb_dri2_attach_format_t *) attachments;
 398    cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
 399                                                         dri2_surf->drawable,
 400                                                         count, count,
 401                                                         format_attachments);
 402
 403    reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
 404                                                    cookie, NULL);
 405    if (reply == NULL)
 406       return NULL;
 407
 408    buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
 409    dri2_surf->base.Width = *width = reply->width;
 410    dri2_surf->base.Height = *height = reply->height;
 411    *out_count = reply->count;
 412    dri2_process_buffers(dri2_surf, buffers, *out_count);
 413
 414    free(reply);
 415
 416    return dri2_surf->buffers;
 417 }
 418
 419 #ifdef GLX_USE_TLS
 420 static const char dri_driver_format[] = "%.*s/tls/%s_dri.so";
 421 #else
 422 static const char dri_driver_format[] = "%.*s/%s_dri.so";
 423 #endif
 424
 425 static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
 426
 427 struct dri2_extension_match {
 428    const char *name;
 429    int version;
 430    int offset;
 431 };
 432
 433 static struct dri2_extension_match dri2_driver_extensions[] = {
 434    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 435    { __DRI_DRI2, 1, offsetof(struct dri2_egl_display, dri2) },
 436    { NULL }
 437 };
 438
 439 static struct dri2_extension_match dri2_core_extensions[] = {
 440    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 441    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 442    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 443    { NULL }
 444 };
 445
 446 static EGLBoolean
 447 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 448                      struct dri2_extension_match *matches,
 449                      const __DRIextension **extensions)
 450 {
 451    int i, j, ret = EGL_TRUE;
 452    void *field;
 453
 454    for (i = 0; extensions[i]; i++) {
 455       _eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
 456       for (j = 0; matches[j].name; j++) {
 457          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 458              extensions[i]->version >= matches[j].version) {
 459             field = ((char *) dri2_dpy + matches[j].offset);
 460             *(const __DRIextension **) field = extensions[i];
 461             _eglLog(_EGL_INFO, "DRI2: found extension %s version %d",
 462                     extensions[i]->name, extensions[i]->version);
 463          }
 464       }
 465    }
 466
 467    for (j = 0; matches[j].name; j++) {
 468       field = ((char *) dri2_dpy + matches[j].offset);
 469       if (*(const __DRIextension **) field == NULL) {
 470          _eglLog(_EGL_FATAL, "DRI2: did not find extension %s version %d",
 471                  matches[j].name, matches[j].version);
 472          ret = EGL_FALSE;
 473       }
 474    }
 475
 476    return ret;
 477 }
 478
 479 static char *
 480 dri2_strndup(const char *s, int length)
 481 {
 482    char *d;
 483
 484    d = malloc(length + 1);
 485    if (d == NULL)
 486       return NULL;
 487
 488    memcpy(d, s, length);
 489    d[length] = '\0';
 490
 491    return d;
 492 }
 493
 494 static EGLBoolean
 495 dri2_connect(struct dri2_egl_display *dri2_dpy)
 496 {
 497    xcb_xfixes_query_version_reply_t *xfixes_query;
 498    xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
 499    xcb_dri2_query_version_reply_t *dri2_query;
 500    xcb_dri2_query_version_cookie_t dri2_query_cookie;
 501    xcb_dri2_connect_reply_t *connect;
 502    xcb_dri2_connect_cookie_t connect_cookie;
 503    xcb_generic_error_t *error;
 504    xcb_screen_iterator_t s;
 505
 506    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
 507    xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
 508
 509    xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
 510                                                   XCB_XFIXES_MAJOR_VERSION,
 511                                                   XCB_XFIXES_MINOR_VERSION);
 512
 513    dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
 514                                                XCB_DRI2_MAJOR_VERSION,
 515                                                XCB_DRI2_MINOR_VERSION);
 516
 517    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 518    connect_cookie = xcb_dri2_connect_unchecked (dri2_dpy->conn,
 519                                                 s.data->root,
 520                                                 XCB_DRI2_DRIVER_TYPE_DRI);
 521
 522    xfixes_query =
 523       xcb_xfixes_query_version_reply (dri2_dpy->conn,
 524                                       xfixes_query_cookie, &error);
 525    if (xfixes_query == NULL ||
 526        error != NULL || xfixes_query->major_version < 2) {
 527       _eglLog(_EGL_FATAL, "DRI2: failed to query xfixes version");
 528       free(error);
 529       return EGL_FALSE;
 530    }
 531    free(xfixes_query);
 532
 533    dri2_query =
 534       xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
 535    if (dri2_query == NULL || error != NULL) {
 536       _eglLog(_EGL_FATAL, "DRI2: failed to query version");
 537       free(error);
 538       return EGL_FALSE;
 539    }
 540    dri2_dpy->dri2_major = dri2_query->major_version;
 541    dri2_dpy->dri2_minor = dri2_query->minor_version;
 542    free(dri2_query);
 543
 544    connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
 545    if (connect == NULL ||
 546        connect->driver_name_length + connect->device_name_length == 0) {
 547       _eglLog(_EGL_FATAL, "DRI2: failed to authenticate");
 548       return EGL_FALSE;
 549    }
 550
 551    dri2_dpy->device_name =
 552       dri2_strndup(xcb_dri2_connect_device_name (connect),
 553                    xcb_dri2_connect_device_name_length (connect));
 554
 555    dri2_dpy->driver_name =
 556       dri2_strndup(xcb_dri2_connect_driver_name (connect),
 557                    xcb_dri2_connect_driver_name_length (connect));
 558
 559    if (dri2_dpy->device_name == NULL || dri2_dpy->driver_name == NULL) {
 560       free(dri2_dpy->device_name);
 561       free(dri2_dpy->driver_name);
 562       free(connect);
 563       return EGL_FALSE;
 564    }
 565    free(connect);
 566
 567    return EGL_TRUE;
 568 }
 569
 570 static EGLBoolean
 571 dri2_authenticate(struct dri2_egl_display *dri2_dpy)
 572 {
 573    xcb_dri2_authenticate_reply_t *authenticate;
 574    xcb_dri2_authenticate_cookie_t authenticate_cookie;
 575    xcb_screen_iterator_t s;
 576    drm_magic_t magic;
 577
 578    if (drmGetMagic(dri2_dpy->fd, &magic)) {
 579       _eglLog(_EGL_FATAL, "DRI2: failed to get drm magic");
 580       return EGL_FALSE;
 581    }
 582
 583    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 584    authenticate_cookie =
 585       xcb_dri2_authenticate_unchecked(dri2_dpy->conn, s.data->root, magic);
 586    authenticate =
 587       xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
 588    if (authenticate == NULL || !authenticate->authenticated) {
 589       _eglLog(_EGL_FATAL, "DRI2: failed to authenticate");
 590       free(authenticate);
 591       return EGL_FALSE;
 592    }
 593
 594    free(authenticate);
 595
 596    return EGL_TRUE;
 597 }
 598
 599 static EGLBoolean
 600 dri2_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
 601                              _EGLDisplay *disp)
 602 {
 603    xcb_screen_iterator_t s;
 604    xcb_depth_iterator_t d;
 605    xcb_visualtype_t *visuals;
 606    int i, j, id;
 607
 608    s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 609    d = xcb_screen_allowed_depths_iterator(s.data);
 610    id = 1;
 611    while (d.rem > 0) {
 612       EGLBoolean class_added[6] = { 0, };
 613
 614       visuals = xcb_depth_visuals(d.data);
 615       for (i = 0; i < xcb_depth_visuals_length(d.data); i++) {
 616          if (class_added[visuals[i]._class])
 617             continue;
 618
 619          class_added[visuals[i]._class] = EGL_TRUE;
 620          for (j = 0; dri2_dpy->driver_configs[j]; j++)
 621             dri2_add_config(disp, dri2_dpy->driver_configs[j],
 622                             id++, d.data->depth, &visuals[i]);
 623       }
 624
 625       xcb_depth_next(&d);
 626    }
 627
 628    if (!disp->NumConfigs) {
 629       _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
 630       return EGL_FALSE;
 631    }
 632
 633    return EGL_TRUE;
 634 }
 635
 636 /**
 637  * Called via eglInitialize(), GLX_drv->API.Initialize().
 638  */
 639 static EGLBoolean
 640 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp,
 641                 EGLint *major, EGLint *minor)
 642 {
 643    const __DRIextension **extensions;
 644    struct dri2_egl_display *dri2_dpy;
 645    char path[PATH_MAX], *search_paths, *p, *next, *end;
 646
 647    dri2_dpy = malloc(sizeof *dri2_dpy);
 648    if (!dri2_dpy)
 649       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 650
 651    disp->DriverData = (void *) dri2_dpy;
 652    if (disp->NativeDisplay == NULL) {
 653       dri2_dpy->conn = xcb_connect(0, 0);
 654       if (!dri2_dpy->conn) {
 655          _eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
 656          goto cleanup_dpy;
 657       }
 658    } else {
 659       dri2_dpy->conn = XGetXCBConnection(disp->NativeDisplay);
 660    }
 661
 662    if (dri2_dpy->conn == NULL)
 663       goto cleanup_conn;
 664
 665    if (dri2_dpy->conn) {
 666       if (!dri2_connect(dri2_dpy))
 667          goto cleanup_conn;
 668    }
 669
 670    search_paths = NULL;
 671    if (geteuid() == getuid()) {
 672       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 673       search_paths = getenv("LIBGL_DRIVERS_PATH");
 674    }
 675    if (search_paths == NULL)
 676       search_paths = DEFAULT_DRIVER_DIR;
 677
 678    dri2_dpy->driver = NULL;
 679    end = search_paths + strlen(search_paths);
 680    for (p = search_paths; p < end && dri2_dpy->driver == NULL; p = next + 1) {
 681       next = strchr(p, ':');
 682       if (next == NULL)
 683          next = end;
 684
 685       snprintf(path, sizeof path,
 686                dri_driver_format, (int) (next - p), p, dri2_dpy->driver_name);
 687       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 688    }
 689
 690    if (dri2_dpy->driver == NULL) {
 691       _eglLog(_EGL_FATAL,
 692               "DRI2: failed to open any driver (search paths %s)",
 693               search_paths);
 694       goto cleanup_conn;
 695    }
 696
 697    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 698    extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 699    if (extensions == NULL) {
 700       _eglLog(_EGL_FATAL,
 701               "DRI2: driver exports no extensions (%s)", dlerror());
 702       goto cleanup_driver;
 703    }
 704
 705    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions))
 706       goto cleanup_driver;
 707
 708    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
 709    if (dri2_dpy->fd == -1) {
 710       _eglLog(_EGL_FATAL,
 711               "DRI2: could not open %s (%s)", dri2_dpy->device_name,
 712               strerror(errno));
 713       goto cleanup_driver;
 714    }
 715
 716    if (dri2_dpy->conn) {
 717       if (!dri2_authenticate(dri2_dpy))
 718          goto cleanup_fd;
 719    }
 720
 721    if (dri2_dpy->dri2_minor >= 1) {
 722       dri2_dpy->loader_extension.base.name = __DRI_DRI2_LOADER;
 723       dri2_dpy->loader_extension.base.version = 3;
 724       dri2_dpy->loader_extension.getBuffers = dri2_get_buffers;
 725       dri2_dpy->loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 726       dri2_dpy->loader_extension.getBuffersWithFormat =
 727          dri2_get_buffers_with_format;
 728    } else {
 729       dri2_dpy->loader_extension.base.name = __DRI_DRI2_LOADER;
 730       dri2_dpy->loader_extension.base.version = 2;
 731       dri2_dpy->loader_extension.getBuffers = dri2_get_buffers;
 732       dri2_dpy->loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
 733       dri2_dpy->loader_extension.getBuffersWithFormat = NULL;
 734    }
 735
 736    dri2_dpy->image_lookup_extension.base.name = __DRI_IMAGE_LOOKUP;
 737    dri2_dpy->image_lookup_extension.base.version = 1;
 738    dri2_dpy->image_lookup_extension.lookupEGLImage = dri2_lookup_egl_image;
 739
 740    dri2_dpy->extensions[0] = &dri2_dpy->loader_extension.base;
 741    dri2_dpy->extensions[1] = &dri2_dpy->image_lookup_extension.base;
 742    dri2_dpy->extensions[2] = NULL;
 743
 744    dri2_dpy->dri_screen =
 745       dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd, dri2_dpy->extensions,
 746                                       &dri2_dpy->driver_configs, dri2_dpy);
 747
 748    if (dri2_dpy->dri_screen == NULL) {
 749       _eglLog(_EGL_FATAL, "DRI2: failed to create dri screen");
 750       goto cleanup_fd;
 751    }
 752
 753    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 754    if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions))
 755       goto cleanup_dri_screen;
 756
 757    if (dri2_dpy->conn) {
 758       if (!dri2_add_configs_for_visuals(dri2_dpy, disp))
 759          goto cleanup_configs;
 760    }
 761
 762    disp->ClientAPIsMask = EGL_OPENGL_BIT;
 763    disp->Extensions.KHR_image_base = EGL_TRUE;
 764    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
 765    disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 766    disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 767
 768    /* we're supporting EGL 1.4 */
 769    *major = 1;
 770    *minor = 4;
 771
 772    return EGL_TRUE;
 773
 774  cleanup_configs:
 775    _eglCleanupDisplay(disp);
 776  cleanup_dri_screen:
 777    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 778  cleanup_fd:
 779    close(dri2_dpy->fd);
 780  cleanup_driver:
 781    dlclose(dri2_dpy->driver);
 782  cleanup_conn:
 783    if (disp->NativeDisplay == NULL)
 784       xcb_disconnect(dri2_dpy->conn);
 785  cleanup_dpy:
 786    free(dri2_dpy);
 787
 788    return EGL_FALSE;
 789 }
 790
 791 /**
 792  * Called via eglTerminate(), drv->API.Terminate().
 793  */
 794 static EGLBoolean
 795 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 796 {
 797    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 798
 799    _eglReleaseDisplayResources(drv, disp);
 800    _eglCleanupDisplay(disp);
 801
 802    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 803    close(dri2_dpy->fd);
 804    dlclose(dri2_dpy->driver);
 805    if (disp->NativeDisplay == NULL)
 806       xcb_disconnect(dri2_dpy->conn);
 807    free(dri2_dpy);
 808    disp->DriverData = NULL;
 809
 810    return EGL_TRUE;
 811 }
 812
 813
 814 /**
 815  * Called via eglCreateContext(), drv->API.CreateContext().
 816  */
 817 static _EGLContext *
 818 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
 819                     _EGLContext *share_list, const EGLint *attrib_list)
 820 {
 821    struct dri2_egl_context *dri2_ctx;
 822    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 823    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
 824    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
 825
 826    dri2_ctx = malloc(sizeof *dri2_ctx);
 827    if (!dri2_ctx) {
 828       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
 829       return NULL;
 830    }
 831
 832    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
 833       goto cleanup;
 834
 835    dri2_ctx->dri_context =
 836       dri2_dpy->dri2->createNewContext(dri2_dpy->dri_screen,
 837                                        dri2_config->dri_config,
 838                                        dri2_ctx_shared ?
 839                                        dri2_ctx_shared->dri_context : NULL,
 840                                        dri2_ctx);
 841
 842    if (!dri2_ctx->dri_context)
 843       goto cleanup;
 844
 845    return &dri2_ctx->base;
 846
 847  cleanup:
 848    free(dri2_ctx);
 849    return NULL;
 850 }
 851
 852 static EGLBoolean
 853 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 854 {
 855    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 856    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 857
 858    if (_eglIsSurfaceBound(surf))
 859       return EGL_TRUE;
 860
 861    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 862
 863    xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
 864
 865    if (surf->Type == EGL_PBUFFER_BIT)
 866       xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
 867
 868    free(surf);
 869
 870    return EGL_TRUE;
 871 }
 872
 873 /**
 874  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
 875  */
 876 static EGLBoolean
 877 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
 878                   _EGLSurface *rsurf, _EGLContext *ctx)
 879 {
 880    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 881    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 882    struct dri2_egl_surface *dri2_dsurf = dri2_egl_surface(dsurf);
 883    struct dri2_egl_surface *dri2_rsurf = dri2_egl_surface(rsurf);
 884    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 885    __DRIdrawable *ddraw, *rdraw;
 886    __DRIcontext *cctx;
 887
 888    /* bind the new context and return the "orphaned" one */
 889    if (!_eglBindContext(&ctx, &dsurf, &rsurf))
 890       return EGL_FALSE;
 891
 892    /* flush before context switch */
 893    if (ctx && dri2_drv->glFlush)
 894       dri2_drv->glFlush();
 895
 896    ddraw = (dri2_dsurf) ? dri2_dsurf->dri_drawable : NULL;
 897    rdraw = (dri2_rsurf) ? dri2_rsurf->dri_drawable : NULL;
 898    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
 899
 900    if ((cctx == NULL && ddraw == NULL && rdraw == NULL) ||
 901        dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
 902       if (dsurf && !_eglIsSurfaceLinked(dsurf))
 903          dri2_destroy_surface(drv, disp, dsurf);
 904       if (rsurf && rsurf != dsurf && !_eglIsSurfaceLinked(dsurf))
 905          dri2_destroy_surface(drv, disp, rsurf);
 906       if (ctx != NULL && !_eglIsContextLinked(ctx))
 907          dri2_dpy->core->unbindContext(dri2_egl_context(ctx)->dri_context);
 908
 909       return EGL_TRUE;
 910    } else {
 911       _eglBindContext(&ctx, &dsurf, &rsurf);
 912
 913       return EGL_FALSE;
 914    }
 915 }
 916
 917 /**
 918  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 919  */
 920 static _EGLSurface *
 921 dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 922                     _EGLConfig *conf, EGLNativeWindowType window,
 923                     const EGLint *attrib_list)
 924 {
 925    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 926    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 927    struct dri2_egl_surface *dri2_surf;
 928    xcb_get_geometry_cookie_t cookie;
 929    xcb_get_geometry_reply_t *reply;
 930    xcb_screen_iterator_t s;
 931    xcb_generic_error_t *error;
 932
 933    dri2_surf = malloc(sizeof *dri2_surf);
 934    if (!dri2_surf) {
 935       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 936       return NULL;
 937    }
 938
 939    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 940       goto cleanup_surf;
 941
 942    dri2_surf->region = XCB_NONE;
 943    if (type == EGL_PBUFFER_BIT) {
 944       dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
 945       s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
 946       xcb_create_pixmap(dri2_dpy->conn,
 947                         _eglGetConfigKey(conf, EGL_BUFFER_SIZE),
 948                         dri2_surf->drawable, s.data->root,
 949                         dri2_surf->base.Width, dri2_surf->base.Height);
 950    } else {
 951       dri2_surf->drawable = window;
 952    }
 953
 954    dri2_surf->dri_drawable =
 955       (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
 956                                             dri2_conf->dri_config, dri2_surf);
 957    if (dri2_surf->dri_drawable == NULL) {
 958       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 959       goto cleanup_pixmap;
 960    }
 961
 962    xcb_dri2_create_drawable (dri2_dpy->conn, dri2_surf->drawable);
 963
 964    if (type != EGL_PBUFFER_BIT) {
 965       cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
 966       reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
 967       if (reply == NULL || error != NULL) {
 968          _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
 969          free(error);
 970          goto cleanup_dri_drawable;
 971       }
 972
 973       dri2_surf->base.Width = reply->width;
 974       dri2_surf->base.Height = reply->height;
 975       free(reply);
 976    }
 977
 978    return &dri2_surf->base;
 979
 980  cleanup_dri_drawable:
 981    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 982  cleanup_pixmap:
 983    if (type == EGL_PBUFFER_BIT)
 984       xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
 985  cleanup_surf:
 986    free(dri2_surf);
 987
 988    return NULL;
 989 }
 990
 991 /**
 992  * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 993  */
 994 static _EGLSurface *
 995 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 996                            _EGLConfig *conf, EGLNativeWindowType window,
 997                            const EGLint *attrib_list)
 998 {
 999    return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
1000                               window, attrib_list);
1001 }
1002
1003 static _EGLSurface *
1004 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
1005                            _EGLConfig *conf, EGLNativePixmapType pixmap,
1006                            const EGLint *attrib_list)
1007 {
1008    return dri2_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
1009                               pixmap, attrib_list);
1010 }
1011
1012 static _EGLSurface *
1013 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
1014                             _EGLConfig *conf, const EGLint *attrib_list)
1015 {
1016    return dri2_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
1017                               XCB_WINDOW_NONE, attrib_list);
1018 }
1019
1020 static EGLBoolean
1021 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
1022 {
1023    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1024    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1025    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
1026    _EGLContext *ctx;
1027    xcb_dri2_copy_region_cookie_t cookie;
1028
1029    if (dri2_drv->glFlush) {
1030       ctx = _eglGetCurrentContext();
1031       if (ctx && ctx->DrawSurface == &dri2_surf->base)
1032          dri2_drv->glFlush();
1033    }
1034
1035    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
1036
1037 #if 0
1038    /* FIXME: Add support for dri swapbuffers, that'll give us swap
1039     * interval and page flipping (at least for fullscreen windows) as
1040     * well as the page flip event.  Unless surface->SwapBehavior is
1041     * EGL_BUFFER_PRESERVED. */
1042 #if __DRI2_FLUSH_VERSION >= 2
1043    if (pdraw->psc->f)
1044       (*pdraw->psc->f->flushInvalidate)(pdraw->driDrawable);
1045 #endif
1046 #endif
1047
1048    if (!dri2_surf->have_fake_front)
1049       return EGL_TRUE;
1050
1051    cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
1052                                            dri2_surf->drawable,
1053                                            dri2_surf->region,
1054                                            XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
1055                                            XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT);
1056    free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
1057
1058    return EGL_TRUE;
1059 }
1060
1061 /*
1062  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1063  */
1064 static _EGLProc
1065 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1066 {
1067    /* FIXME: Do we need to support lookup of EGL symbols too? */
1068
1069    return (_EGLProc) _glapi_get_proc_address(procname);
1070 }
1071
1072 static EGLBoolean
1073 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1074 {
1075    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1076    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(ctx->DrawSurface);
1077
1078    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1079     * we need to copy fake to real here.*/
1080
1081    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
1082
1083    return EGL_TRUE;
1084 }
1085
1086 static EGLBoolean
1087 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1088 {
1089    if (engine != EGL_CORE_NATIVE_ENGINE)
1090       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1091    /* glXWaitX(); */
1092
1093    return EGL_TRUE;
1094 }
1095
1096 static void
1097 dri2_unload(_EGLDriver *drv)
1098 {
1099    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1100    free(dri2_drv);
1101 }
1102
1103 static EGLBoolean
1104 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1105                   EGLNativePixmapType target)
1106 {
1107    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1108    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1109    xcb_gcontext_t gc;
1110
1111    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
1112
1113    gc = xcb_generate_id(dri2_dpy->conn);
1114    xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
1115    xcb_copy_area(dri2_dpy->conn,
1116                   dri2_surf->drawable,
1117                   target,
1118                   gc,
1119                   0, 0,
1120                   0, 0,
1121                   dri2_surf->base.Width,
1122                   dri2_surf->base.Height);
1123    xcb_free_gc(dri2_dpy->conn, gc);
1124
1125    return EGL_TRUE;
1126 }
1127
1128 static EGLBoolean
1129 dri2_bind_tex_image(_EGLDriver *drv,
1130                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1131 {
1132    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1133    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1134    struct dri2_egl_context *dri2_ctx;
1135    _EGLContext *ctx;
1136    GLint format, target;
1137
1138    ctx = _eglGetCurrentContext();
1139    dri2_ctx = dri2_egl_context(ctx);
1140
1141    if (buffer != EGL_BACK_BUFFER) {
1142       _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
1143       return EGL_FALSE;
1144    }
1145
1146    /* We allow binding pixmaps too... Not conformat, but we can do it
1147     * for free and it's useful for X compositors.  Supposedly there's
1148     * a EGL_NOKIA_texture_from_pixmap extension that allows that, but
1149     * I couldn't find it at this time. */
1150    if ((dri2_surf->base.Type & (EGL_PBUFFER_BIT | EGL_PIXMAP_BIT)) == 0) {
1151       _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
1152       return EGL_FALSE;
1153    }
1154
1155    switch (dri2_surf->base.TextureFormat) {
1156    case EGL_TEXTURE_RGB:
1157       format = __DRI_TEXTURE_FORMAT_RGB;
1158       break;
1159    case EGL_TEXTURE_RGBA:
1160       format = __DRI_TEXTURE_FORMAT_RGBA;
1161       break;
1162    default:
1163       _eglError(EGL_BAD_MATCH, "eglBindTexImage");
1164       return EGL_FALSE;
1165    }
1166
1167    switch (dri2_surf->base.TextureTarget) {
1168    case EGL_TEXTURE_2D:
1169       target = GL_TEXTURE_2D;
1170       break;
1171    default:
1172       _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
1173       return EGL_FALSE;
1174    }
1175
1176    (*dri2_dpy->tex_buffer->setTexBuffer2)(dri2_ctx->dri_context,
1177                                           target, format,
1178                                           dri2_surf->dri_drawable);
1179
1180    return dri2_surf->base.BoundToTexture = EGL_TRUE;
1181 }
1182
1183 static EGLBoolean
1184 dri2_release_tex_image(_EGLDriver *drv,
1185                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1186 {
1187    return EGL_TRUE;
1188 }
1189
1190 static _EGLImage *
1191 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
1192                              EGLClientBuffer buffer, const EGLint *attr_list)
1193 {
1194    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1195    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1196    struct dri2_egl_image *dri2_img;
1197    unsigned int attachments[1];
1198    xcb_drawable_t drawable;
1199    xcb_dri2_get_buffers_cookie_t buffers_cookie;
1200    xcb_dri2_get_buffers_reply_t *buffers_reply;
1201    xcb_dri2_dri2_buffer_t *buffers;
1202    xcb_get_geometry_cookie_t geometry_cookie;
1203    xcb_get_geometry_reply_t *geometry_reply;
1204    xcb_generic_error_t *error;
1205    int stride, format;
1206
1207    drawable = (xcb_drawable_t) buffer;
1208    xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
1209    attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
1210    buffers_cookie =
1211       xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
1212                                       drawable, 1, 1, attachments);
1213    geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
1214    buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
1215                                                buffers_cookie, NULL);
1216    buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
1217    if (buffers == NULL) {
1218       return NULL;
1219    }
1220
1221    geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
1222                                             geometry_cookie, &error);
1223    if (geometry_reply == NULL || error != NULL) {
1224       _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
1225       free(error);
1226       free(buffers_reply);
1227    }
1228
1229    switch (geometry_reply->depth) {
1230    case 16:
1231       format = __DRI_IMAGE_FORMAT_RGB565;
1232       break;
1233    case 24:
1234       format = __DRI_IMAGE_FORMAT_XRGB8888;
1235       break;
1236    case 32:
1237       format = __DRI_IMAGE_FORMAT_ARGB8888;
1238       break;
1239    default:
1240       _eglError(EGL_BAD_PARAMETER,
1241                 "dri2_create_image_khr: unsupported pixmap depth");
1242       free(buffers_reply);
1243       free(geometry_reply);
1244       return NULL;
1245    }
1246
1247    dri2_img = malloc(sizeof *dri2_img);
1248    if (!dri2_img) {
1249       free(buffers_reply);
1250       free(geometry_reply);
1251       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1252       return EGL_NO_IMAGE_KHR;
1253    }
1254
1255    if (!_eglInitImage(&dri2_img->base, disp, attr_list)) {
1256       free(buffers_reply);
1257       free(geometry_reply);
1258       return EGL_NO_IMAGE_KHR;
1259    }
1260
1261    stride = buffers[0].pitch / buffers[0].cpp;
1262    dri2_img->dri_image =
1263       dri2_dpy->image->createImageFromName(dri2_ctx->dri_context,
1264                                            buffers_reply->width,
1265                                            buffers_reply->height,
1266                                            format,
1267                                            buffers[0].name,
1268                                            stride,
1269                                            dri2_img);
1270
1271    free(buffers_reply);
1272    free(geometry_reply);
1273
1274    return &dri2_img->base;
1275 }
1276
1277 static _EGLImage *
1278 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1279                                    EGLClientBuffer buffer,
1280                                    const EGLint *attr_list)
1281 {
1282    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1283    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1284    struct dri2_egl_image *dri2_img;
1285    GLuint renderbuffer = (GLuint) buffer;
1286
1287    if (renderbuffer == 0) {
1288       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1289       return EGL_NO_IMAGE_KHR;
1290    }
1291
1292    dri2_img = malloc(sizeof *dri2_img);
1293    if (!dri2_img) {
1294       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1295       return EGL_NO_IMAGE_KHR;
1296    }
1297
1298    if (!_eglInitImage(&dri2_img->base, disp, attr_list))
1299       return EGL_NO_IMAGE_KHR;
1300
1301    dri2_img->dri_image =
1302       dri2_dpy->image->createImageFromRenderbuffer(dri2_ctx->dri_context,
1303                                                    renderbuffer,
1304                                                    dri2_img);
1305
1306    return &dri2_img->base;
1307 }
1308
1309 static _EGLImage *
1310 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1311                       _EGLContext *ctx, EGLenum target,
1312                       EGLClientBuffer buffer, const EGLint *attr_list)
1313 {
1314    switch (target) {
1315    case EGL_NATIVE_PIXMAP_KHR:
1316       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
1317    case EGL_GL_RENDERBUFFER_KHR:
1318       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
1319    default:
1320       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1321       return EGL_NO_IMAGE_KHR;
1322    }
1323 }
1324
1325 static EGLBoolean
1326 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
1327 {
1328    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1329    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
1330
1331    dri2_dpy->image->destroyImage(dri2_img->dri_image);
1332    free(dri2_img);
1333
1334    return EGL_TRUE;
1335 }
1336
1337 /**
1338  * This is the main entrypoint into the driver, called by libEGL.
1339  * Create a new _EGLDriver object and init its dispatch table.
1340  */
1341 _EGLDriver *
1342 _eglMain(const char *args)
1343 {
1344    struct dri2_egl_driver *dri2_drv;
1345
1346    dri2_drv = malloc(sizeof *dri2_drv);
1347    if (!dri2_drv)
1348       return NULL;
1349
1350    _eglInitDriverFallbacks(&dri2_drv->base);
1351    dri2_drv->base.API.Initialize = dri2_initialize;
1352    dri2_drv->base.API.Terminate = dri2_terminate;
1353    dri2_drv->base.API.CreateContext = dri2_create_context;
1354    dri2_drv->base.API.MakeCurrent = dri2_make_current;
1355    dri2_drv->base.API.CreateWindowSurface = dri2_create_window_surface;
1356    dri2_drv->base.API.CreatePixmapSurface = dri2_create_pixmap_surface;
1357    dri2_drv->base.API.CreatePbufferSurface = dri2_create_pbuffer_surface;
1358    dri2_drv->base.API.DestroySurface = dri2_destroy_surface;
1359    dri2_drv->base.API.SwapBuffers = dri2_swap_buffers;
1360    dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
1361    dri2_drv->base.API.WaitClient = dri2_wait_client;
1362    dri2_drv->base.API.WaitNative = dri2_wait_native;
1363    dri2_drv->base.API.CopyBuffers = dri2_copy_buffers;
1364    dri2_drv->base.API.BindTexImage = dri2_bind_tex_image;
1365    dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image;
1366    dri2_drv->base.API.CreateImageKHR = dri2_create_image_khr;
1367    dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr;
1368
1369    dri2_drv->base.Name = "DRI2";
1370    dri2_drv->base.Unload = dri2_unload;
1371
1372    dri2_drv->glFlush =
1373       (void (*)(void)) dri2_get_proc_address(&dri2_drv->base, "glFlush");
1374
1375    return &dri2_drv->base;
1376 }