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 <sys/types.h>
  40 #include <sys/stat.h>
  41
  42 #include "egl_dri2.h"
  43
  44 const __DRIuseInvalidateExtension use_invalidate = {
  45    { __DRI_USE_INVALIDATE, 1 }
  46 };
  47
  48 EGLint dri2_to_egl_attribute_map[] = {
  49    0,
  50    EGL_BUFFER_SIZE,             /* __DRI_ATTRIB_BUFFER_SIZE */
  51    EGL_LEVEL,                   /* __DRI_ATTRIB_LEVEL */
  52    EGL_RED_SIZE,                /* __DRI_ATTRIB_RED_SIZE */
  53    EGL_GREEN_SIZE,              /* __DRI_ATTRIB_GREEN_SIZE */
  54    EGL_BLUE_SIZE,               /* __DRI_ATTRIB_BLUE_SIZE */
  55    EGL_LUMINANCE_SIZE,          /* __DRI_ATTRIB_LUMINANCE_SIZE */
  56    EGL_ALPHA_SIZE,              /* __DRI_ATTRIB_ALPHA_SIZE */
  57    0,                           /* __DRI_ATTRIB_ALPHA_MASK_SIZE */
  58    EGL_DEPTH_SIZE,              /* __DRI_ATTRIB_DEPTH_SIZE */
  59    EGL_STENCIL_SIZE,            /* __DRI_ATTRIB_STENCIL_SIZE */
  60    0,                           /* __DRI_ATTRIB_ACCUM_RED_SIZE */
  61    0,                           /* __DRI_ATTRIB_ACCUM_GREEN_SIZE */
  62    0,                           /* __DRI_ATTRIB_ACCUM_BLUE_SIZE */
  63    0,                           /* __DRI_ATTRIB_ACCUM_ALPHA_SIZE */
  64    EGL_SAMPLE_BUFFERS,          /* __DRI_ATTRIB_SAMPLE_BUFFERS */
  65    EGL_SAMPLES,                 /* __DRI_ATTRIB_SAMPLES */
  66    0,                           /* __DRI_ATTRIB_RENDER_TYPE, */
  67    0,                           /* __DRI_ATTRIB_CONFIG_CAVEAT */
  68    0,                           /* __DRI_ATTRIB_CONFORMANT */
  69    0,                           /* __DRI_ATTRIB_DOUBLE_BUFFER */
  70    0,                           /* __DRI_ATTRIB_STEREO */
  71    0,                           /* __DRI_ATTRIB_AUX_BUFFERS */
  72    0,                           /* __DRI_ATTRIB_TRANSPARENT_TYPE */
  73    0,                           /* __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE */
  74    0,                           /* __DRI_ATTRIB_TRANSPARENT_RED_VALUE */
  75    0,                           /* __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE */
  76    0,                           /* __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE */
  77    0,                           /* __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE */
  78    0,                           /* __DRI_ATTRIB_FLOAT_MODE */
  79    0,                           /* __DRI_ATTRIB_RED_MASK */
  80    0,                           /* __DRI_ATTRIB_GREEN_MASK */
  81    0,                           /* __DRI_ATTRIB_BLUE_MASK */
  82    0,                           /* __DRI_ATTRIB_ALPHA_MASK */
  83    EGL_MAX_PBUFFER_WIDTH,       /* __DRI_ATTRIB_MAX_PBUFFER_WIDTH */
  84    EGL_MAX_PBUFFER_HEIGHT,      /* __DRI_ATTRIB_MAX_PBUFFER_HEIGHT */
  85    EGL_MAX_PBUFFER_PIXELS,      /* __DRI_ATTRIB_MAX_PBUFFER_PIXELS */
  86    0,                           /* __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH */
  87    0,                           /* __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT */
  88    0,                           /* __DRI_ATTRIB_VISUAL_SELECT_GROUP */
  89    0,                           /* __DRI_ATTRIB_SWAP_METHOD */
  90    EGL_MAX_SWAP_INTERVAL,       /* __DRI_ATTRIB_MAX_SWAP_INTERVAL */
  91    EGL_MIN_SWAP_INTERVAL,       /* __DRI_ATTRIB_MIN_SWAP_INTERVAL */
  92    0,                           /* __DRI_ATTRIB_BIND_TO_TEXTURE_RGB */
  93    0,                           /* __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA */
  94    0,                           /* __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE */
  95    0,                           /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS */
  96    EGL_Y_INVERTED_NOK,          /* __DRI_ATTRIB_YINVERTED */
  97    0,                           /* __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE */
  98 };
  99
 100 static EGLBoolean
 101 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 102 {
 103    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 104       return EGL_FALSE;
 105
 106    if (!_eglMatchConfig(conf, criteria))
 107       return EGL_FALSE;
 108
 109    return EGL_TRUE;
 110 }
 111
 112 struct dri2_egl_config *
 113 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 114                 int depth, EGLint surface_type, const EGLint *attr_list,
 115                 const unsigned int *rgba_masks)
 116 {
 117    struct dri2_egl_config *conf;
 118    struct dri2_egl_display *dri2_dpy;
 119    _EGLConfig base;
 120    unsigned int attrib, value, double_buffer;
 121    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 122    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 123    _EGLConfig *matching_config;
 124    EGLint num_configs = 0;
 125    EGLint config_id;
 126    int i;
 127
 128    dri2_dpy = disp->DriverData;
 129    _eglInitConfig(&base, disp, id);
 130
 131    i = 0;
 132    double_buffer = 0;
 133    bind_to_texture_rgb = 0;
 134    bind_to_texture_rgba = 0;
 135
 136    while (dri2_dpy->core->indexConfigAttrib(dri_config, i++, &attrib, &value)) {
 137       switch (attrib) {
 138       case __DRI_ATTRIB_RENDER_TYPE:
 139          if (value & __DRI_ATTRIB_RGBA_BIT)
 140             value = EGL_RGB_BUFFER;
 141          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 142             value = EGL_LUMINANCE_BUFFER;
 143          else
 144             /* not valid */;
 145          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 146          break;
 147
 148       case __DRI_ATTRIB_CONFIG_CAVEAT:
 149          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 150             value = EGL_NON_CONFORMANT_CONFIG;
 151          else if (value & __DRI_ATTRIB_SLOW_BIT)
 152             value = EGL_SLOW_CONFIG;
 153          else
 154             value = EGL_NONE;
 155          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 156          break;
 157
 158       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 159          bind_to_texture_rgb = value;
 160          break;
 161
 162       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 163          bind_to_texture_rgba = value;
 164          break;
 165
 166       case __DRI_ATTRIB_DOUBLE_BUFFER:
 167          double_buffer = value;
 168          break;
 169
 170       case __DRI_ATTRIB_RED_MASK:
 171          dri_masks[0] = value;
 172          break;
 173
 174       case __DRI_ATTRIB_GREEN_MASK:
 175          dri_masks[1] = value;
 176          break;
 177
 178       case __DRI_ATTRIB_BLUE_MASK:
 179          dri_masks[2] = value;
 180          break;
 181
 182       case __DRI_ATTRIB_ALPHA_MASK:
 183          dri_masks[3] = value;
 184          break;
 185
 186       default:
 187          key = dri2_to_egl_attribute_map[attrib];
 188          if (key != 0)
 189             _eglSetConfigKey(&base, key, value);
 190          break;
 191       }
 192    }
 193
 194    if (attr_list)
 195       for (i = 0; attr_list[i] != EGL_NONE; i += 2)
 196          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 197
 198    if (depth > 0 && depth != base.BufferSize)
 199       return NULL;
 200
 201    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 202       return NULL;
 203
 204    base.NativeRenderable = EGL_TRUE;
 205
 206    base.SurfaceType = surface_type;
 207    if (surface_type & (EGL_PBUFFER_BIT |
 208        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 209       base.BindToTextureRGB = bind_to_texture_rgb;
 210       if (base.AlphaSize > 0)
 211          base.BindToTextureRGBA = bind_to_texture_rgba;
 212    }
 213
 214    base.RenderableType = disp->ClientAPIs;
 215    base.Conformant = disp->ClientAPIs;
 216
 217    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 218       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 219       return NULL;
 220    }
 221
 222    config_id = base.ConfigID;
 223    base.ConfigID    = EGL_DONT_CARE;
 224    base.SurfaceType = EGL_DONT_CARE;
 225    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 226                                  (_EGLArrayForEach) dri2_match_config, &base);
 227
 228    if (num_configs == 1) {
 229       conf = (struct dri2_egl_config *) matching_config;
 230
 231       if (double_buffer && !conf->dri_double_config)
 232          conf->dri_double_config = dri_config;
 233       else if (!double_buffer && !conf->dri_single_config)
 234          conf->dri_single_config = dri_config;
 235       else
 236          /* a similar config type is already added (unlikely) => discard */
 237          return NULL;
 238    }
 239    else if (num_configs == 0) {
 240       conf = malloc(sizeof *conf);
 241       if (conf == NULL)
 242          return NULL;
 243
 244       memcpy(&conf->base, &base, sizeof base);
 245       if (double_buffer) {
 246          conf->dri_double_config = dri_config;
 247          conf->dri_single_config = NULL;
 248       } else {
 249          conf->dri_single_config = dri_config;
 250          conf->dri_double_config = NULL;
 251       }
 252       conf->base.SurfaceType = 0;
 253       conf->base.ConfigID = config_id;
 254
 255       _eglLinkConfig(&conf->base);
 256    }
 257    else {
 258       assert(0);
 259       return NULL;
 260    }
 261
 262    if (double_buffer) {
 263       surface_type &= ~EGL_PIXMAP_BIT;
 264
 265       if (dri2_dpy->swap_available) {
 266          conf->base.MinSwapInterval = 0;
 267          conf->base.MaxSwapInterval = 1000; /* XXX arbitrary value */
 268       }
 269    }
 270
 271    conf->base.SurfaceType |= surface_type;
 272
 273    return conf;
 274 }
 275
 276 __DRIimage *
 277 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 278 {
 279    _EGLDisplay *disp = data;
 280    struct dri2_egl_image *dri2_img;
 281    _EGLImage *img;
 282
 283    (void) screen;
 284
 285    img = _eglLookupImage(image, disp);
 286    if (img == NULL) {
 287       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 288       return NULL;
 289    }
 290
 291    dri2_img = dri2_egl_image(image);
 292
 293    return dri2_img->dri_image;
 294 }
 295
 296 const __DRIimageLookupExtension image_lookup_extension = {
 297    { __DRI_IMAGE_LOOKUP, 1 },
 298    dri2_lookup_egl_image
 299 };
 300
 301 static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
 302
 303 struct dri2_extension_match {
 304    const char *name;
 305    int version;
 306    int offset;
 307 };
 308
 309 static struct dri2_extension_match dri2_driver_extensions[] = {
 310    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 311    { __DRI_DRI2, 1, offsetof(struct dri2_egl_display, dri2) },
 312    { NULL, 0, 0 }
 313 };
 314
 315 static struct dri2_extension_match dri2_core_extensions[] = {
 316    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 317    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 318    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 319    { NULL, 0, 0 }
 320 };
 321
 322 static struct dri2_extension_match swrast_driver_extensions[] = {
 323    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 324    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 325    { NULL }
 326 };
 327
 328 static struct dri2_extension_match swrast_core_extensions[] = {
 329    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 330    { NULL }
 331 };
 332
 333 static EGLBoolean
 334 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 335                      struct dri2_extension_match *matches,
 336                      const __DRIextension **extensions)
 337 {
 338    int i, j, ret = EGL_TRUE;
 339    void *field;
 340
 341    for (i = 0; extensions[i]; i++) {
 342       _eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
 343       for (j = 0; matches[j].name; j++) {
 344          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 345              extensions[i]->version >= matches[j].version) {
 346             field = ((char *) dri2_dpy + matches[j].offset);
 347             *(const __DRIextension **) field = extensions[i];
 348             _eglLog(_EGL_INFO, "DRI2: found extension %s version %d",
 349                     extensions[i]->name, extensions[i]->version);
 350          }
 351       }
 352    }
 353
 354    for (j = 0; matches[j].name; j++) {
 355       field = ((char *) dri2_dpy + matches[j].offset);
 356       if (*(const __DRIextension **) field == NULL) {
 357          _eglLog(_EGL_FATAL, "DRI2: did not find extension %s version %d",
 358                  matches[j].name, matches[j].version);
 359          ret = EGL_FALSE;
 360       }
 361    }
 362
 363    return ret;
 364 }
 365
 366 static const __DRIextension **
 367 dri2_open_driver(_EGLDisplay *disp)
 368 {
 369    struct dri2_egl_display *dri2_dpy = disp->DriverData;
 370    const __DRIextension **extensions;
 371    char path[PATH_MAX], *search_paths, *p, *next, *end;
 372
 373    search_paths = NULL;
 374    if (geteuid() == getuid()) {
 375       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 376       search_paths = getenv("LIBGL_DRIVERS_PATH");
 377    }
 378    if (search_paths == NULL)
 379       search_paths = DEFAULT_DRIVER_DIR;
 380
 381    dri2_dpy->driver = NULL;
 382    end = search_paths + strlen(search_paths);
 383    for (p = search_paths; p < end && dri2_dpy->driver == NULL; p = next + 1) {
 384       int len;
 385       next = strchr(p, ':');
 386       if (next == NULL)
 387          next = end;
 388
 389       len = next - p;
 390 #if GLX_USE_TLS
 391       snprintf(path, sizeof path,
 392                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 393       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 394 #endif
 395       if (dri2_dpy->driver == NULL) {
 396          snprintf(path, sizeof path,
 397                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 398          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 399          if (dri2_dpy->driver == NULL)
 400             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 401       }
 402    }
 403
 404    if (dri2_dpy->driver == NULL) {
 405       _eglLog(_EGL_WARNING,
 406               "DRI2: failed to open %s (search paths %s)",
 407               dri2_dpy->driver_name, search_paths);
 408       return NULL;
 409    }
 410
 411    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 412    extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 413    if (extensions == NULL) {
 414       _eglLog(_EGL_WARNING,
 415               "DRI2: driver exports no extensions (%s)", dlerror());
 416       dlclose(dri2_dpy->driver);
 417    }
 418
 419    return extensions;
 420 }
 421
 422 EGLBoolean
 423 dri2_load_driver(_EGLDisplay *disp)
 424 {
 425    struct dri2_egl_display *dri2_dpy = disp->DriverData;
 426    const __DRIextension **extensions;
 427
 428    extensions = dri2_open_driver(disp);
 429    if (!extensions)
 430       return EGL_FALSE;
 431
 432    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions)) {
 433       dlclose(dri2_dpy->driver);
 434       return EGL_FALSE;
 435    }
 436
 437    return EGL_TRUE;
 438 }
 439
 440 EGLBoolean
 441 dri2_load_driver_swrast(_EGLDisplay *disp)
 442 {
 443    struct dri2_egl_display *dri2_dpy = disp->DriverData;
 444    const __DRIextension **extensions;
 445
 446    dri2_dpy->driver_name = "swrast";
 447    extensions = dri2_open_driver(disp);
 448
 449    if (!extensions)
 450       return EGL_FALSE;
 451
 452    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions)) {
 453       dlclose(dri2_dpy->driver);
 454       return EGL_FALSE;
 455    }
 456
 457    return EGL_TRUE;
 458 }
 459
 460 void
 461 dri2_setup_screen(_EGLDisplay *disp)
 462 {
 463    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 464    unsigned int api_mask;
 465
 466    if (dri2_dpy->dri2) {
 467       if (dri2_dpy->dri2->base.version >= 2)
 468          api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 469       else
 470          api_mask = 1 << __DRI_API_OPENGL;
 471    } else {
 472       assert(dri2_dpy->swrast);
 473       if (dri2_dpy->swrast->base.version >= 2)
 474          api_mask = 1 << __DRI_API_OPENGL | 1 << __DRI_API_GLES | 1 << __DRI_API_GLES2;
 475       else
 476          api_mask = 1 << __DRI_API_OPENGL;
 477    }
 478
 479    disp->ClientAPIs = 0;
 480    if (api_mask & (1 <<__DRI_API_OPENGL))
 481       disp->ClientAPIs |= EGL_OPENGL_BIT;
 482    if (api_mask & (1 <<__DRI_API_GLES))
 483       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 484    if (api_mask & (1 << __DRI_API_GLES2))
 485       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 486
 487    if (dri2_dpy->dri2) {
 488       if (dri2_dpy->dri2->base.version >= 2) {
 489          disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
 490          disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
 491          disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
 492       }
 493    } else {
 494       assert(dri2_dpy->swrast);
 495       if (dri2_dpy->swrast->base.version >= 2) {
 496          disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
 497          disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
 498          disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
 499       }
 500    }
 501
 502    if (dri2_dpy->image) {
 503       disp->Extensions.MESA_drm_image = EGL_TRUE;
 504       disp->Extensions.KHR_image_base = EGL_TRUE;
 505       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 506    }
 507 }
 508
 509 EGLBoolean
 510 dri2_create_screen(_EGLDisplay *disp)
 511 {
 512    const __DRIextension **extensions;
 513    struct dri2_egl_display *dri2_dpy;
 514
 515    dri2_dpy = disp->DriverData;
 516
 517    if (dri2_dpy->dri2) {
 518       dri2_dpy->dri_screen =
 519          dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd, dri2_dpy->extensions,
 520                                          &dri2_dpy->driver_configs, disp);
 521    } else {
 522       assert(dri2_dpy->swrast);
 523       dri2_dpy->dri_screen =
 524          dri2_dpy->swrast->createNewScreen(0, dri2_dpy->extensions,
 525                                            &dri2_dpy->driver_configs, disp);
 526    }
 527
 528    if (dri2_dpy->dri_screen == NULL) {
 529       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 530       return EGL_FALSE;
 531    }
 532
 533    dri2_dpy->own_dri_screen = 1;
 534
 535    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 536
 537    if (dri2_dpy->dri2) {
 538       if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions))
 539          goto cleanup_dri_screen;
 540    } else {
 541       assert(dri2_dpy->swrast);
 542       if (!dri2_bind_extensions(dri2_dpy, swrast_core_extensions, extensions))
 543          goto cleanup_dri_screen;
 544    }
 545
 546    dri2_setup_screen(disp);
 547
 548    return EGL_TRUE;
 549
 550  cleanup_dri_screen:
 551    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 552
 553    return EGL_FALSE;
 554 }
 555
 556 /**
 557  * Called via eglInitialize(), GLX_drv->API.Initialize().
 558  */
 559 static EGLBoolean
 560 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 561 {
 562    /* not until swrast_dri is supported */
 563    if (disp->Options.UseFallback)
 564       return EGL_FALSE;
 565
 566    switch (disp->Platform) {
 567 #ifdef HAVE_X11_PLATFORM
 568    case _EGL_PLATFORM_X11:
 569       if (disp->Options.TestOnly)
 570          return EGL_TRUE;
 571       return dri2_initialize_x11(drv, disp);
 572 #endif
 573
 574 #ifdef HAVE_LIBUDEV
 575 #ifdef HAVE_DRM_PLATFORM
 576    case _EGL_PLATFORM_DRM:
 577       if (disp->Options.TestOnly)
 578          return EGL_TRUE;
 579       return dri2_initialize_drm(drv, disp);
 580 #endif
 581 #ifdef HAVE_WAYLAND_PLATFORM
 582    case _EGL_PLATFORM_WAYLAND:
 583       if (disp->Options.TestOnly)
 584          return EGL_TRUE;
 585       return dri2_initialize_wayland(drv, disp);
 586 #endif
 587 #endif
 588 #ifdef HAVE_ANDROID_PLATFORM
 589    case _EGL_PLATFORM_ANDROID:
 590       if (disp->Options.TestOnly)
 591          return EGL_TRUE;
 592       return dri2_initialize_android(drv, disp);
 593 #endif
 594
 595    default:
 596       return EGL_FALSE;
 597    }
 598 }
 599
 600 /**
 601  * Called via eglTerminate(), drv->API.Terminate().
 602  */
 603 static EGLBoolean
 604 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 605 {
 606    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 607
 608    _eglReleaseDisplayResources(drv, disp);
 609    _eglCleanupDisplay(disp);
 610
 611    if (dri2_dpy->own_dri_screen)
 612       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 613    if (dri2_dpy->fd)
 614       close(dri2_dpy->fd);
 615    if (dri2_dpy->driver)
 616       dlclose(dri2_dpy->driver);
 617    if (dri2_dpy->device_name)
 618       free(dri2_dpy->device_name);
 619
 620    if (disp->PlatformDisplay == NULL) {
 621       switch (disp->Platform) {
 622 #ifdef HAVE_X11_PLATFORM
 623       case _EGL_PLATFORM_X11:
 624          xcb_disconnect(dri2_dpy->conn);
 625          break;
 626 #endif
 627 #ifdef HAVE_DRM_PLATFORM
 628       case _EGL_PLATFORM_DRM:
 629          if (dri2_dpy->own_device) {
 630             gbm_device_destroy(&dri2_dpy->gbm_dri->base.base);
 631          }
 632          break;
 633 #endif
 634       default:
 635          break;
 636       }
 637    }
 638
 639    free(dri2_dpy);
 640    disp->DriverData = NULL;
 641
 642    return EGL_TRUE;
 643 }
 644
 645
 646 /**
 647  * Called via eglCreateContext(), drv->API.CreateContext().
 648  */
 649 static _EGLContext *
 650 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
 651                     _EGLContext *share_list, const EGLint *attrib_list)
 652 {
 653    struct dri2_egl_context *dri2_ctx;
 654    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 655    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
 656    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
 657    const __DRIconfig *dri_config;
 658    int api;
 659
 660    (void) drv;
 661
 662    dri2_ctx = malloc(sizeof *dri2_ctx);
 663    if (!dri2_ctx) {
 664       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
 665       return NULL;
 666    }
 667
 668    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
 669       goto cleanup;
 670
 671    switch (dri2_ctx->base.ClientAPI) {
 672    case EGL_OPENGL_ES_API:
 673       switch (dri2_ctx->base.ClientVersion) {
 674       case 1:
 675          api = __DRI_API_GLES;
 676          break;
 677       case 2:
 678          api = __DRI_API_GLES2;
 679          break;
 680       default:
 681          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
 682          return NULL;
 683       }
 684       break;
 685    case EGL_OPENGL_API:
 686       api = __DRI_API_OPENGL;
 687       break;
 688    default:
 689       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
 690       return NULL;
 691    }
 692
 693    if (conf != NULL) {
 694       /* The config chosen here isn't necessarily
 695        * used for surfaces later.
 696        * A pixmap surface will use the single config.
 697        * This opportunity depends on disabling the
 698        * doubleBufferMode check in
 699        * src/mesa/main/context.c:check_compatible()
 700        */
 701       if (dri2_config->dri_double_config)
 702          dri_config = dri2_config->dri_double_config;
 703       else
 704          dri_config = dri2_config->dri_single_config;
 705
 706       /* EGL_WINDOW_BIT is set only when there is a dri_double_config.  This
 707        * makes sure the back buffer will always be used.
 708        */
 709       if (conf->SurfaceType & EGL_WINDOW_BIT)
 710          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
 711    }
 712    else
 713       dri_config = NULL;
 714
 715    if (dri2_dpy->dri2) {
 716       if (dri2_dpy->dri2->base.version >= 2) {
 717          dri2_ctx->dri_context =
 718             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
 719                                                    api,
 720                                                    dri_config,
 721                                                    dri2_ctx_shared ?
 722                                                    dri2_ctx_shared->dri_context : NULL,
 723                                                    dri2_ctx);
 724       } else if (api == __DRI_API_OPENGL) {
 725          dri2_ctx->dri_context =
 726             dri2_dpy->dri2->createNewContext(dri2_dpy->dri_screen,
 727                                              dri_config,
 728                                              dri2_ctx_shared ?
 729                                              dri2_ctx_shared->dri_context : NULL,
 730                                              dri2_ctx);
 731       } else {
 732          /* fail */
 733       }
 734    } else {
 735       assert(dri2_dpy->swrast);
 736       if (dri2_dpy->swrast->base.version >= 2) {
 737          dri2_ctx->dri_context =
 738             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
 739                                                      api,
 740                                                      dri_config,
 741                                                      dri2_ctx_shared ?
 742                                                      dri2_ctx_shared->dri_context : NULL,
 743                                                      dri2_ctx);
 744       } else if (api == __DRI_API_OPENGL) {
 745          dri2_ctx->dri_context =
 746             dri2_dpy->core->createNewContext(dri2_dpy->dri_screen,
 747                                              dri_config,
 748                                              dri2_ctx_shared ?
 749                                              dri2_ctx_shared->dri_context : NULL,
 750                                              dri2_ctx);
 751       } else {
 752          /* fail */
 753       }
 754    }
 755
 756    if (!dri2_ctx->dri_context)
 757       goto cleanup;
 758
 759    return &dri2_ctx->base;
 760
 761  cleanup:
 762    free(dri2_ctx);
 763    return NULL;
 764 }
 765
 766 /**
 767  * Called via eglDestroyContext(), drv->API.DestroyContext().
 768  */
 769 static EGLBoolean
 770 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
 771 {
 772    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 773    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 774
 775    if (_eglPutContext(ctx)) {
 776       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
 777       free(dri2_ctx);
 778    }
 779
 780    return EGL_TRUE;
 781 }
 782
 783 /**
 784  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
 785  */
 786 static EGLBoolean
 787 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
 788                   _EGLSurface *rsurf, _EGLContext *ctx)
 789 {
 790    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 791    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 792    struct dri2_egl_surface *dri2_dsurf = dri2_egl_surface(dsurf);
 793    struct dri2_egl_surface *dri2_rsurf = dri2_egl_surface(rsurf);
 794    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 795    _EGLContext *old_ctx;
 796    _EGLSurface *old_dsurf, *old_rsurf;
 797    __DRIdrawable *ddraw, *rdraw;
 798    __DRIcontext *cctx;
 799
 800    /* make new bindings */
 801    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
 802       return EGL_FALSE;
 803
 804    /* flush before context switch */
 805    if (old_ctx && dri2_drv->glFlush)
 806       dri2_drv->glFlush();
 807
 808    ddraw = (dri2_dsurf) ? dri2_dsurf->dri_drawable : NULL;
 809    rdraw = (dri2_rsurf) ? dri2_rsurf->dri_drawable : NULL;
 810    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
 811
 812    if (old_ctx) {
 813       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
 814       dri2_dpy->core->unbindContext(old_cctx);
 815    }
 816
 817    if ((cctx == NULL && ddraw == NULL && rdraw == NULL) ||
 818        dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
 819       if (old_dsurf)
 820          drv->API.DestroySurface(drv, disp, old_dsurf);
 821       if (old_rsurf)
 822          drv->API.DestroySurface(drv, disp, old_rsurf);
 823       if (old_ctx)
 824          drv->API.DestroyContext(drv, disp, old_ctx);
 825
 826       return EGL_TRUE;
 827    } else {
 828       /* undo the previous _eglBindContext */
 829       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &dsurf, &rsurf);
 830       assert(&dri2_ctx->base == ctx &&
 831              &dri2_dsurf->base == dsurf &&
 832              &dri2_rsurf->base == rsurf);
 833
 834       _eglPutSurface(dsurf);
 835       _eglPutSurface(rsurf);
 836       _eglPutContext(ctx);
 837
 838       _eglPutSurface(old_dsurf);
 839       _eglPutSurface(old_rsurf);
 840       _eglPutContext(old_ctx);
 841
 842       return EGL_FALSE;
 843    }
 844 }
 845
 846 /*
 847  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
 848  */
 849 static _EGLProc
 850 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
 851 {
 852    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 853
 854    return dri2_drv->get_proc_address(procname);
 855 }
 856
 857 static EGLBoolean
 858 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
 859 {
 860    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 861    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(ctx->DrawSurface);
 862
 863    (void) drv;
 864
 865    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
 866     * we need to copy fake to real here.*/
 867
 868    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 869
 870    return EGL_TRUE;
 871 }
 872
 873 static EGLBoolean
 874 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
 875 {
 876    (void) drv;
 877    (void) disp;
 878
 879    if (engine != EGL_CORE_NATIVE_ENGINE)
 880       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
 881    /* glXWaitX(); */
 882
 883    return EGL_TRUE;
 884 }
 885
 886 static EGLBoolean
 887 dri2_bind_tex_image(_EGLDriver *drv,
 888                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
 889 {
 890    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 891    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 892    struct dri2_egl_context *dri2_ctx;
 893    _EGLContext *ctx;
 894    GLint format, target;
 895
 896    ctx = _eglGetCurrentContext();
 897    dri2_ctx = dri2_egl_context(ctx);
 898
 899    if (!_eglBindTexImage(drv, disp, surf, buffer))
 900       return EGL_FALSE;
 901
 902    switch (dri2_surf->base.TextureFormat) {
 903    case EGL_TEXTURE_RGB:
 904       format = __DRI_TEXTURE_FORMAT_RGB;
 905       break;
 906    case EGL_TEXTURE_RGBA:
 907       format = __DRI_TEXTURE_FORMAT_RGBA;
 908       break;
 909    default:
 910       assert(0);
 911    }
 912
 913    switch (dri2_surf->base.TextureTarget) {
 914    case EGL_TEXTURE_2D:
 915       target = GL_TEXTURE_2D;
 916       break;
 917    default:
 918       assert(0);
 919    }
 920
 921    (*dri2_dpy->tex_buffer->setTexBuffer2)(dri2_ctx->dri_context,
 922                                           target, format,
 923                                           dri2_surf->dri_drawable);
 924
 925    return EGL_TRUE;
 926 }
 927
 928 static EGLBoolean
 929 dri2_release_tex_image(_EGLDriver *drv,
 930                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
 931 {
 932 #if __DRI_TEX_BUFFER_VERSION >= 3
 933    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 934    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 935    struct dri2_egl_context *dri2_ctx;
 936    _EGLContext *ctx;
 937    GLint  target;
 938
 939    ctx = _eglGetCurrentContext();
 940    dri2_ctx = dri2_egl_context(ctx);
 941
 942    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
 943       return EGL_FALSE;
 944
 945    switch (dri2_surf->base.TextureTarget) {
 946    case EGL_TEXTURE_2D:
 947       target = GL_TEXTURE_2D;
 948       break;
 949    default:
 950       assert(0);
 951    }
 952    if (dri2_dpy->tex_buffer->releaseTexBuffer!=NULL)
 953     (*dri2_dpy->tex_buffer->releaseTexBuffer)(dri2_ctx->dri_context,
 954                                              target,
 955                                              dri2_surf->dri_drawable);
 956 #endif
 957
 958    return EGL_TRUE;
 959 }
 960
 961 static _EGLImage *
 962 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
 963                                    EGLClientBuffer buffer,
 964                                    const EGLint *attr_list)
 965 {
 966    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 967    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 968    struct dri2_egl_image *dri2_img;
 969    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
 970
 971    if (renderbuffer == 0) {
 972       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
 973       return EGL_NO_IMAGE_KHR;
 974    }
 975
 976    dri2_img = malloc(sizeof *dri2_img);
 977    if (!dri2_img) {
 978       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
 979       return EGL_NO_IMAGE_KHR;
 980    }
 981
 982    if (!_eglInitImage(&dri2_img->base, disp)) {
 983       free(dri2_img);
 984       return EGL_NO_IMAGE_KHR;
 985    }
 986
 987    dri2_img->dri_image =
 988       dri2_dpy->image->createImageFromRenderbuffer(dri2_ctx->dri_context,
 989                                                    renderbuffer,
 990                                                    dri2_img);
 991
 992    return &dri2_img->base;
 993 }
 994
 995 static _EGLImage *
 996 dri2_create_image_drm_name(_EGLDisplay *disp, _EGLContext *ctx,
 997                            EGLint name,
 998                            const _EGLImageAttribs *attrs,
 999                            EGLint format,
1000                            EGLint pitch)
1001 {
1002    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1003    struct dri2_egl_image *dri2_img;
1004
1005    (void) ctx;
1006
1007    dri2_img = malloc(sizeof *dri2_img);
1008    if (!dri2_img) {
1009       _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
1010       return NULL;
1011    }
1012
1013    if (!_eglInitImage(&dri2_img->base, disp)) {
1014       free(dri2_img);
1015       return NULL;
1016    }
1017
1018    dri2_img->dri_image =
1019       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1020                                            attrs->Width,
1021                                            attrs->Height,
1022                                            format,
1023                                            name,
1024                                            pitch,
1025                                            dri2_img);
1026    if (dri2_img->dri_image == NULL) {
1027       free(dri2_img);
1028       _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
1029       return NULL;
1030    }
1031
1032    return &dri2_img->base;
1033 }
1034
1035 static _EGLImage *
1036 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1037                                   EGLClientBuffer buffer, const EGLint *attr_list)
1038 {
1039    EGLint format, name, pitch, err;
1040    _EGLImageAttribs attrs;
1041
1042    name = (EGLint) (uintptr_t) buffer;
1043
1044    err = _eglParseImageAttribList(&attrs, disp, attr_list);
1045    if (err != EGL_SUCCESS)
1046       return NULL;
1047
1048    if (attrs.Width <= 0 || attrs.Height <= 0 ||
1049        attrs.DRMBufferStrideMESA <= 0) {
1050       _eglError(EGL_BAD_PARAMETER,
1051                 "bad width, height or stride");
1052       return NULL;
1053    }
1054
1055    switch (attrs.DRMBufferFormatMESA) {
1056    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1057       format = __DRI_IMAGE_FORMAT_ARGB8888;
1058       pitch = attrs.DRMBufferStrideMESA;
1059       break;
1060    default:
1061       _eglError(EGL_BAD_PARAMETER,
1062                 "dri2_create_image_khr: unsupported pixmap depth");
1063       return NULL;
1064    }
1065
1066    return dri2_create_image_drm_name (disp, ctx, name, &attrs, format, pitch);
1067 }
1068
1069 #ifdef HAVE_WAYLAND_PLATFORM
1070 static _EGLImage *
1071 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1072                                     EGLClientBuffer _buffer,
1073                                     const EGLint *attr_list)
1074 {
1075    struct wl_buffer *buffer = (struct wl_buffer *) _buffer;
1076    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1077    __DRIimage *dri_image;
1078    _EGLImageAttribs attrs;
1079    EGLint format, name, stride, pitch, err;
1080
1081    if (!wayland_buffer_is_drm(buffer))
1082        return NULL;
1083
1084    dri_image = wayland_drm_buffer_get_buffer(buffer);
1085
1086    dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_NAME, &name);
1087    dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
1088
1089    err = _eglParseImageAttribList(&attrs, disp, attr_list);
1090    if (err != EGL_SUCCESS)
1091       return NULL;
1092
1093    attrs.Width = buffer->width;
1094    attrs.Height = buffer->height;
1095
1096    switch (wayland_drm_buffer_get_format(buffer)) {
1097    case WL_DRM_FORMAT_ARGB8888:
1098       format = __DRI_IMAGE_FORMAT_ARGB8888;
1099       break;
1100    case WL_DRM_FORMAT_XRGB8888:
1101       format = __DRI_IMAGE_FORMAT_XRGB8888;
1102       break;
1103    default:
1104       _eglError(EGL_BAD_PARAMETER,
1105                 "dri2_create_image_khr: unsupported wl_buffer format");
1106       return NULL;
1107    }
1108
1109    pitch = stride / 4;
1110
1111    return dri2_create_image_drm_name(disp, ctx, name, &attrs, format, pitch);
1112 }
1113 #endif
1114
1115 _EGLImage *
1116 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1117                       _EGLContext *ctx, EGLenum target,
1118                       EGLClientBuffer buffer, const EGLint *attr_list)
1119 {
1120    (void) drv;
1121
1122    switch (target) {
1123    case EGL_GL_RENDERBUFFER_KHR:
1124       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
1125    case EGL_DRM_BUFFER_MESA:
1126       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
1127 #ifdef HAVE_WAYLAND_PLATFORM
1128    case EGL_WAYLAND_BUFFER_WL:
1129       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
1130 #endif
1131    default:
1132       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1133       return EGL_NO_IMAGE_KHR;
1134    }
1135 }
1136
1137 static EGLBoolean
1138 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
1139 {
1140    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1141    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
1142
1143    (void) drv;
1144
1145    dri2_dpy->image->destroyImage(dri2_img->dri_image);
1146    free(dri2_img);
1147
1148    return EGL_TRUE;
1149 }
1150
1151 static _EGLImage *
1152 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
1153                            const EGLint *attr_list)
1154 {
1155    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1156    struct dri2_egl_image *dri2_img;
1157    _EGLImageAttribs attrs;
1158    unsigned int dri_use, valid_mask;
1159    int format;
1160    EGLint err = EGL_SUCCESS;
1161
1162    (void) drv;
1163
1164    dri2_img = malloc(sizeof *dri2_img);
1165    if (!dri2_img) {
1166       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1167       return EGL_NO_IMAGE_KHR;
1168    }
1169
1170    if (!attr_list) {
1171       err = EGL_BAD_PARAMETER;
1172       goto cleanup_img;
1173    }
1174
1175    if (!_eglInitImage(&dri2_img->base, disp)) {
1176       err = EGL_BAD_PARAMETER;
1177       goto cleanup_img;
1178    }
1179
1180    err = _eglParseImageAttribList(&attrs, disp, attr_list);
1181    if (err != EGL_SUCCESS)
1182       goto cleanup_img;
1183
1184    if (attrs.Width <= 0 || attrs.Height <= 0) {
1185       _eglLog(_EGL_WARNING, "bad width or height (%dx%d)",
1186             attrs.Width, attrs.Height);
1187       goto cleanup_img;
1188    }
1189
1190    switch (attrs.DRMBufferFormatMESA) {
1191    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1192       format = __DRI_IMAGE_FORMAT_ARGB8888;
1193       break;
1194    default:
1195       _eglLog(_EGL_WARNING, "bad image format value 0x%04x",
1196             attrs.DRMBufferFormatMESA);
1197       goto cleanup_img;
1198    }
1199
1200    valid_mask =
1201       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
1202       EGL_DRM_BUFFER_USE_SHARE_MESA |
1203       EGL_DRM_BUFFER_USE_CURSOR_MESA;
1204    if (attrs.DRMBufferUseMESA & ~valid_mask) {
1205       _eglLog(_EGL_WARNING, "bad image use bit 0x%04x",
1206             attrs.DRMBufferUseMESA & ~valid_mask);
1207       goto cleanup_img;
1208    }
1209
1210    dri_use = 0;
1211    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
1212       dri_use |= __DRI_IMAGE_USE_SHARE;
1213    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
1214       dri_use |= __DRI_IMAGE_USE_SCANOUT;
1215    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
1216       dri_use |= __DRI_IMAGE_USE_CURSOR;
1217
1218    dri2_img->dri_image =
1219       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
1220                                    attrs.Width, attrs.Height,
1221                                    format, dri_use, dri2_img);
1222    if (dri2_img->dri_image == NULL) {
1223       err = EGL_BAD_ALLOC;
1224       goto cleanup_img;
1225    }
1226
1227    return &dri2_img->base;
1228
1229  cleanup_img:
1230    free(dri2_img);
1231    _eglError(err, "dri2_create_drm_image_mesa");
1232
1233    return EGL_NO_IMAGE_KHR;
1234 }
1235
1236 static EGLBoolean
1237 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
1238                           EGLint *name, EGLint *handle, EGLint *stride)
1239 {
1240    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1241    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
1242
1243    (void) drv;
1244
1245    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
1246                                             __DRI_IMAGE_ATTRIB_NAME, name)) {
1247       _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
1248       return EGL_FALSE;
1249    }
1250
1251    if (handle)
1252       dri2_dpy->image->queryImage(dri2_img->dri_image,
1253                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
1254
1255    if (stride)
1256       dri2_dpy->image->queryImage(dri2_img->dri_image,
1257                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
1258
1259    return EGL_TRUE;
1260 }
1261
1262 #ifdef HAVE_WAYLAND_PLATFORM
1263
1264 static void *
1265 dri2_wl_reference_buffer(void *user_data, uint32_t name,
1266                          int32_t width, int32_t height,
1267                          uint32_t stride, uint32_t format)
1268 {
1269    _EGLDisplay *disp = user_data;
1270    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1271    __DRIimage *image;
1272    int dri_format;
1273
1274    switch (format) {
1275    case WL_DRM_FORMAT_ARGB8888:
1276       dri_format =__DRI_IMAGE_FORMAT_ARGB8888;
1277       break;
1278    case WL_DRM_FORMAT_XRGB8888:
1279       dri_format = __DRI_IMAGE_FORMAT_XRGB8888;
1280       break;
1281    default:
1282       return NULL;
1283    }
1284
1285    image = dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1286                                                 width, height,
1287                                                 dri_format, name, stride / 4,
1288                                                 NULL);
1289
1290    return image;
1291 }
1292
1293 static void
1294 dri2_wl_release_buffer(void *user_data, void *buffer)
1295 {
1296    _EGLDisplay *disp = user_data;
1297    __DRIimage *image = buffer;
1298    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1299
1300    dri2_dpy->image->destroyImage(image);
1301 }
1302
1303 static struct wayland_drm_callbacks wl_drm_callbacks = {
1304         .authenticate = NULL,
1305         .reference_buffer = dri2_wl_reference_buffer,
1306         .release_buffer = dri2_wl_release_buffer
1307 };
1308
1309 static EGLBoolean
1310 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1311                              struct wl_display *wl_dpy)
1312 {
1313    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1314
1315    (void) drv;
1316
1317    if (dri2_dpy->wl_server_drm)
1318            return EGL_FALSE;
1319
1320    wl_drm_callbacks.authenticate =
1321       (int(*)(void *, uint32_t)) dri2_dpy->authenticate;
1322
1323    dri2_dpy->wl_server_drm =
1324            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
1325                             &wl_drm_callbacks, disp);
1326
1327    if (!dri2_dpy->wl_server_drm)
1328            return EGL_FALSE;
1329
1330    return EGL_TRUE;
1331 }
1332
1333 static EGLBoolean
1334 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1335                                struct wl_display *wl_dpy)
1336 {
1337    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1338
1339    (void) drv;
1340
1341    if (!dri2_dpy->wl_server_drm)
1342            return EGL_FALSE;
1343
1344    wayland_drm_uninit(dri2_dpy->wl_server_drm);
1345    dri2_dpy->wl_server_drm = NULL;
1346
1347    return EGL_TRUE;
1348 }
1349 #endif
1350
1351 static void
1352 dri2_unload(_EGLDriver *drv)
1353 {
1354    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1355
1356    if (dri2_drv->handle)
1357       dlclose(dri2_drv->handle);
1358    free(dri2_drv);
1359 }
1360
1361 static EGLBoolean
1362 dri2_load(_EGLDriver *drv)
1363 {
1364    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1365 #ifdef HAVE_SHARED_GLAPI
1366 #ifdef HAVE_ANDROID_PLATFORM
1367    const char *libname = "libglapi.so";
1368 #else
1369    const char *libname = "libglapi.so.0";
1370 #endif
1371 #else
1372    /*
1373     * Both libGL.so and libglapi.so are glapi providers.  There is no way to
1374     * tell which one to load.
1375     */
1376    const char *libname = NULL;
1377 #endif
1378    void *handle;
1379
1380    /* RTLD_GLOBAL to make sure glapi symbols are visible to DRI drivers */
1381    handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL);
1382    if (handle) {
1383       dri2_drv->get_proc_address = (_EGLProc (*)(const char *))
1384          dlsym(handle, "_glapi_get_proc_address");
1385       if (!dri2_drv->get_proc_address || !libname) {
1386          /* no need to keep a reference */
1387          dlclose(handle);
1388          handle = NULL;
1389       }
1390    }
1391
1392    /* if glapi is not available, loading DRI drivers will fail */
1393    if (!dri2_drv->get_proc_address) {
1394       _eglLog(_EGL_WARNING, "DRI2: failed to find _glapi_get_proc_address");
1395       return EGL_FALSE;
1396    }
1397
1398    dri2_drv->glFlush = (void (*)(void))
1399       dri2_drv->get_proc_address("glFlush");
1400
1401    dri2_drv->handle = handle;
1402
1403    return EGL_TRUE;
1404 }
1405
1406 /**
1407  * This is the main entrypoint into the driver, called by libEGL.
1408  * Create a new _EGLDriver object and init its dispatch table.
1409  */
1410 _EGLDriver *
1411 _EGL_MAIN(const char *args)
1412 {
1413    struct dri2_egl_driver *dri2_drv;
1414
1415    (void) args;
1416
1417    dri2_drv = malloc(sizeof *dri2_drv);
1418    if (!dri2_drv)
1419       return NULL;
1420
1421    memset(dri2_drv, 0, sizeof *dri2_drv);
1422
1423    if (!dri2_load(&dri2_drv->base)) {
1424       free(dri2_drv);
1425       return NULL;
1426    }
1427
1428    _eglInitDriverFallbacks(&dri2_drv->base);
1429    dri2_drv->base.API.Initialize = dri2_initialize;
1430    dri2_drv->base.API.Terminate = dri2_terminate;
1431    dri2_drv->base.API.CreateContext = dri2_create_context;
1432    dri2_drv->base.API.DestroyContext = dri2_destroy_context;
1433    dri2_drv->base.API.MakeCurrent = dri2_make_current;
1434    dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
1435    dri2_drv->base.API.WaitClient = dri2_wait_client;
1436    dri2_drv->base.API.WaitNative = dri2_wait_native;
1437    dri2_drv->base.API.BindTexImage = dri2_bind_tex_image;
1438    dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image;
1439    dri2_drv->base.API.CreateImageKHR = dri2_create_image_khr;
1440    dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr;
1441    dri2_drv->base.API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
1442    dri2_drv->base.API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
1443 #ifdef HAVE_WAYLAND_PLATFORM
1444    dri2_drv->base.API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
1445    dri2_drv->base.API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
1446 #endif
1447
1448    dri2_drv->base.Name = "DRI2";
1449    dri2_drv->base.Unload = dri2_unload;
1450
1451    return &dri2_drv->base;
1452 }