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    conf->base.SurfaceType |= surface_type;
 266
 267    return conf;
 268 }
 269
 270 __DRIimage *
 271 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 272 {
 273    _EGLDisplay *disp = data;
 274    struct dri2_egl_image *dri2_img;
 275    _EGLImage *img;
 276
 277    (void) screen;
 278
 279    img = _eglLookupImage(image, disp);
 280    if (img == NULL) {
 281       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 282       return NULL;
 283    }
 284
 285    dri2_img = dri2_egl_image(image);
 286
 287    return dri2_img->dri_image;
 288 }
 289
 290 const __DRIimageLookupExtension image_lookup_extension = {
 291    { __DRI_IMAGE_LOOKUP, 1 },
 292    dri2_lookup_egl_image
 293 };
 294
 295 static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
 296
 297 struct dri2_extension_match {
 298    const char *name;
 299    int version;
 300    int offset;
 301 };
 302
 303 static struct dri2_extension_match dri2_driver_extensions[] = {
 304    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 305    { __DRI_DRI2, 1, offsetof(struct dri2_egl_display, dri2) },
 306    { NULL, 0, 0 }
 307 };
 308
 309 static struct dri2_extension_match dri2_core_extensions[] = {
 310    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 311    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 312    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 313    { NULL, 0, 0 }
 314 };
 315
 316 static struct dri2_extension_match swrast_driver_extensions[] = {
 317    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 318    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 319    { NULL }
 320 };
 321
 322 static struct dri2_extension_match swrast_core_extensions[] = {
 323    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 324    { NULL }
 325 };
 326
 327 static EGLBoolean
 328 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 329                      struct dri2_extension_match *matches,
 330                      const __DRIextension **extensions)
 331 {
 332    int i, j, ret = EGL_TRUE;
 333    void *field;
 334
 335    for (i = 0; extensions[i]; i++) {
 336       _eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
 337       for (j = 0; matches[j].name; j++) {
 338          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 339              extensions[i]->version >= matches[j].version) {
 340             field = ((char *) dri2_dpy + matches[j].offset);
 341             *(const __DRIextension **) field = extensions[i];
 342             _eglLog(_EGL_INFO, "DRI2: found extension %s version %d",
 343                     extensions[i]->name, extensions[i]->version);
 344          }
 345       }
 346    }
 347
 348    for (j = 0; matches[j].name; j++) {
 349       field = ((char *) dri2_dpy + matches[j].offset);
 350       if (*(const __DRIextension **) field == NULL) {
 351          _eglLog(_EGL_FATAL, "DRI2: did not find extension %s version %d",
 352                  matches[j].name, matches[j].version);
 353          ret = EGL_FALSE;
 354       }
 355    }
 356
 357    return ret;
 358 }
 359
 360 static const __DRIextension **
 361 dri2_open_driver(_EGLDisplay *disp)
 362 {
 363    struct dri2_egl_display *dri2_dpy = disp->DriverData;
 364    const __DRIextension **extensions;
 365    char path[PATH_MAX], *search_paths, *p, *next, *end;
 366
 367    search_paths = NULL;
 368    if (geteuid() == getuid()) {
 369       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 370       search_paths = getenv("LIBGL_DRIVERS_PATH");
 371    }
 372    if (search_paths == NULL)
 373       search_paths = DEFAULT_DRIVER_DIR;
 374
 375    dri2_dpy->driver = NULL;
 376    end = search_paths + strlen(search_paths);
 377    for (p = search_paths; p < end && dri2_dpy->driver == NULL; p = next + 1) {
 378       int len;
 379       next = strchr(p, ':');
 380       if (next == NULL)
 381          next = end;
 382
 383       len = next - p;
 384 #if GLX_USE_TLS
 385       snprintf(path, sizeof path,
 386                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 387       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 388 #endif
 389       if (dri2_dpy->driver == NULL) {
 390          snprintf(path, sizeof path,
 391                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 392          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 393          if (dri2_dpy->driver == NULL)
 394             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 395       }
 396    }
 397
 398    if (dri2_dpy->driver == NULL) {
 399       _eglLog(_EGL_WARNING,
 400               "DRI2: failed to open %s (search paths %s)",
 401               dri2_dpy->driver_name, search_paths);
 402       return NULL;
 403    }
 404
 405    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 406    extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 407    if (extensions == NULL) {
 408       _eglLog(_EGL_WARNING,
 409               "DRI2: driver exports no extensions (%s)", dlerror());
 410       dlclose(dri2_dpy->driver);
 411    }
 412
 413    return extensions;
 414 }
 415
 416 EGLBoolean
 417 dri2_load_driver(_EGLDisplay *disp)
 418 {
 419    struct dri2_egl_display *dri2_dpy = disp->DriverData;
 420    const __DRIextension **extensions;
 421
 422    extensions = dri2_open_driver(disp);
 423    if (!extensions)
 424       return EGL_FALSE;
 425
 426    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions)) {
 427       dlclose(dri2_dpy->driver);
 428       return EGL_FALSE;
 429    }
 430
 431    return EGL_TRUE;
 432 }
 433
 434 EGLBoolean
 435 dri2_load_driver_swrast(_EGLDisplay *disp)
 436 {
 437    struct dri2_egl_display *dri2_dpy = disp->DriverData;
 438    const __DRIextension **extensions;
 439
 440    dri2_dpy->driver_name = "swrast";
 441    extensions = dri2_open_driver(disp);
 442
 443    if (!extensions)
 444       return EGL_FALSE;
 445
 446    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions)) {
 447       dlclose(dri2_dpy->driver);
 448       return EGL_FALSE;
 449    }
 450
 451    return EGL_TRUE;
 452 }
 453
 454 void
 455 dri2_setup_screen(_EGLDisplay *disp)
 456 {
 457    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 458    unsigned int api_mask;
 459
 460    if (dri2_dpy->dri2) {
 461       if (dri2_dpy->dri2->base.version >= 2)
 462          api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 463       else
 464          api_mask = 1 << __DRI_API_OPENGL;
 465    } else {
 466       assert(dri2_dpy->swrast);
 467       if (dri2_dpy->swrast->base.version >= 2)
 468          api_mask = 1 << __DRI_API_OPENGL | 1 << __DRI_API_GLES | 1 << __DRI_API_GLES2;
 469       else
 470          api_mask = 1 << __DRI_API_OPENGL;
 471    }
 472
 473    disp->ClientAPIs = 0;
 474    if (api_mask & (1 <<__DRI_API_OPENGL))
 475       disp->ClientAPIs |= EGL_OPENGL_BIT;
 476    if (api_mask & (1 <<__DRI_API_GLES))
 477       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 478    if (api_mask & (1 << __DRI_API_GLES2))
 479       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 480
 481    if (dri2_dpy->dri2) {
 482       if (dri2_dpy->dri2->base.version >= 2) {
 483          disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
 484          disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
 485          disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
 486       }
 487    } else {
 488       assert(dri2_dpy->swrast);
 489       if (dri2_dpy->swrast->base.version >= 2) {
 490          disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
 491          disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
 492          disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
 493       }
 494    }
 495
 496    if (dri2_dpy->image) {
 497       disp->Extensions.MESA_drm_image = EGL_TRUE;
 498       disp->Extensions.KHR_image_base = EGL_TRUE;
 499       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 500    }
 501 }
 502
 503 EGLBoolean
 504 dri2_create_screen(_EGLDisplay *disp)
 505 {
 506    const __DRIextension **extensions;
 507    struct dri2_egl_display *dri2_dpy;
 508
 509    dri2_dpy = disp->DriverData;
 510
 511    if (dri2_dpy->dri2) {
 512       dri2_dpy->dri_screen =
 513          dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd, dri2_dpy->extensions,
 514                                          &dri2_dpy->driver_configs, disp);
 515    } else {
 516       assert(dri2_dpy->swrast);
 517       dri2_dpy->dri_screen =
 518          dri2_dpy->swrast->createNewScreen(0, dri2_dpy->extensions,
 519                                            &dri2_dpy->driver_configs, disp);
 520    }
 521
 522    if (dri2_dpy->dri_screen == NULL) {
 523       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 524       return EGL_FALSE;
 525    }
 526
 527    dri2_dpy->own_dri_screen = 1;
 528
 529    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 530
 531    if (dri2_dpy->dri2) {
 532       if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions))
 533          goto cleanup_dri_screen;
 534    } else {
 535       assert(dri2_dpy->swrast);
 536       if (!dri2_bind_extensions(dri2_dpy, swrast_core_extensions, extensions))
 537          goto cleanup_dri_screen;
 538    }
 539
 540    dri2_setup_screen(disp);
 541
 542    return EGL_TRUE;
 543
 544  cleanup_dri_screen:
 545    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 546
 547    return EGL_FALSE;
 548 }
 549
 550 /**
 551  * Called via eglInitialize(), GLX_drv->API.Initialize().
 552  */
 553 static EGLBoolean
 554 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 555 {
 556    /* not until swrast_dri is supported */
 557    if (disp->Options.UseFallback)
 558       return EGL_FALSE;
 559
 560    switch (disp->Platform) {
 561 #ifdef HAVE_X11_PLATFORM
 562    case _EGL_PLATFORM_X11:
 563       if (disp->Options.TestOnly)
 564          return EGL_TRUE;
 565       return dri2_initialize_x11(drv, disp);
 566 #endif
 567
 568 #ifdef HAVE_LIBUDEV
 569 #ifdef HAVE_DRM_PLATFORM
 570    case _EGL_PLATFORM_DRM:
 571       if (disp->Options.TestOnly)
 572          return EGL_TRUE;
 573       return dri2_initialize_drm(drv, disp);
 574 #endif
 575 #ifdef HAVE_WAYLAND_PLATFORM
 576    case _EGL_PLATFORM_WAYLAND:
 577       if (disp->Options.TestOnly)
 578          return EGL_TRUE;
 579       return dri2_initialize_wayland(drv, disp);
 580 #endif
 581 #endif
 582 #ifdef HAVE_ANDROID_PLATFORM
 583    case _EGL_PLATFORM_ANDROID:
 584       if (disp->Options.TestOnly)
 585          return EGL_TRUE;
 586       return dri2_initialize_android(drv, disp);
 587 #endif
 588
 589    default:
 590       return EGL_FALSE;
 591    }
 592 }
 593
 594 /**
 595  * Called via eglTerminate(), drv->API.Terminate().
 596  */
 597 static EGLBoolean
 598 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
 599 {
 600    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 601
 602    _eglReleaseDisplayResources(drv, disp);
 603    _eglCleanupDisplay(disp);
 604
 605    if (dri2_dpy->own_dri_screen)
 606       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 607    if (dri2_dpy->fd)
 608       close(dri2_dpy->fd);
 609    if (dri2_dpy->driver)
 610       dlclose(dri2_dpy->driver);
 611
 612    if (disp->PlatformDisplay == NULL) {
 613       switch (disp->Platform) {
 614 #ifdef HAVE_X11_PLATFORM
 615       case _EGL_PLATFORM_X11:
 616          xcb_disconnect(dri2_dpy->conn);
 617          break;
 618 #endif
 619 #ifdef HAVE_WAYLAND_PLATFORM
 620       case _EGL_PLATFORM_WAYLAND:
 621          wl_display_destroy(dri2_dpy->wl_dpy);
 622          break;
 623 #endif
 624 #ifdef HAVE_DRM_PLATFORM
 625       case _EGL_PLATFORM_DRM:
 626          if (dri2_dpy->own_gbm_device) {
 627             gbm_device_destroy(&dri2_dpy->gbm_dri->base.base);
 628          }
 629          break;
 630 #endif
 631       default:
 632          break;
 633       }
 634    }
 635
 636    free(dri2_dpy);
 637    disp->DriverData = NULL;
 638
 639    return EGL_TRUE;
 640 }
 641
 642
 643 /**
 644  * Called via eglCreateContext(), drv->API.CreateContext().
 645  */
 646 static _EGLContext *
 647 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
 648                     _EGLContext *share_list, const EGLint *attrib_list)
 649 {
 650    struct dri2_egl_context *dri2_ctx;
 651    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 652    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
 653    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
 654    const __DRIconfig *dri_config;
 655    int api;
 656
 657    (void) drv;
 658
 659    dri2_ctx = malloc(sizeof *dri2_ctx);
 660    if (!dri2_ctx) {
 661       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
 662       return NULL;
 663    }
 664
 665    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
 666       goto cleanup;
 667
 668    switch (dri2_ctx->base.ClientAPI) {
 669    case EGL_OPENGL_ES_API:
 670       switch (dri2_ctx->base.ClientVersion) {
 671       case 1:
 672          api = __DRI_API_GLES;
 673          break;
 674       case 2:
 675          api = __DRI_API_GLES2;
 676          break;
 677       default:
 678          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
 679          return NULL;
 680       }
 681       break;
 682    case EGL_OPENGL_API:
 683       api = __DRI_API_OPENGL;
 684       break;
 685    default:
 686       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
 687       return NULL;
 688    }
 689
 690    if (conf != NULL) {
 691       /* The config chosen here isn't necessarily
 692        * used for surfaces later.
 693        * A pixmap surface will use the single config.
 694        * This opportunity depends on disabling the
 695        * doubleBufferMode check in
 696        * src/mesa/main/context.c:check_compatible()
 697        */
 698       if (dri2_config->dri_double_config)
 699          dri_config = dri2_config->dri_double_config;
 700       else
 701          dri_config = dri2_config->dri_single_config;
 702
 703       /* EGL_WINDOW_BIT is set only when there is a dri_double_config.  This
 704        * makes sure the back buffer will always be used.
 705        */
 706       if (conf->SurfaceType & EGL_WINDOW_BIT)
 707          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
 708    }
 709    else
 710       dri_config = NULL;
 711
 712    if (dri2_dpy->dri2) {
 713       if (dri2_dpy->dri2->base.version >= 2) {
 714          dri2_ctx->dri_context =
 715             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
 716                                                    api,
 717                                                    dri_config,
 718                                                    dri2_ctx_shared ?
 719                                                    dri2_ctx_shared->dri_context : NULL,
 720                                                    dri2_ctx);
 721       } else if (api == __DRI_API_OPENGL) {
 722          dri2_ctx->dri_context =
 723             dri2_dpy->dri2->createNewContext(dri2_dpy->dri_screen,
 724                                              dri_config,
 725                                              dri2_ctx_shared ?
 726                                              dri2_ctx_shared->dri_context : NULL,
 727                                              dri2_ctx);
 728       } else {
 729          /* fail */
 730       }
 731    } else {
 732       assert(dri2_dpy->swrast);
 733       if (dri2_dpy->swrast->base.version >= 2) {
 734          dri2_ctx->dri_context =
 735             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
 736                                                      api,
 737                                                      dri_config,
 738                                                      dri2_ctx_shared ?
 739                                                      dri2_ctx_shared->dri_context : NULL,
 740                                                      dri2_ctx);
 741       } else if (api == __DRI_API_OPENGL) {
 742          dri2_ctx->dri_context =
 743             dri2_dpy->core->createNewContext(dri2_dpy->dri_screen,
 744                                              dri_config,
 745                                              dri2_ctx_shared ?
 746                                              dri2_ctx_shared->dri_context : NULL,
 747                                              dri2_ctx);
 748       } else {
 749          /* fail */
 750       }
 751    }
 752
 753    if (!dri2_ctx->dri_context)
 754       goto cleanup;
 755
 756    return &dri2_ctx->base;
 757
 758  cleanup:
 759    free(dri2_ctx);
 760    return NULL;
 761 }
 762
 763 /**
 764  * Called via eglDestroyContext(), drv->API.DestroyContext().
 765  */
 766 static EGLBoolean
 767 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
 768 {
 769    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 770    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 771
 772    if (_eglPutContext(ctx)) {
 773       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
 774       free(dri2_ctx);
 775    }
 776
 777    return EGL_TRUE;
 778 }
 779
 780 /**
 781  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
 782  */
 783 static EGLBoolean
 784 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
 785                   _EGLSurface *rsurf, _EGLContext *ctx)
 786 {
 787    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 788    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 789    struct dri2_egl_surface *dri2_dsurf = dri2_egl_surface(dsurf);
 790    struct dri2_egl_surface *dri2_rsurf = dri2_egl_surface(rsurf);
 791    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 792    _EGLContext *old_ctx;
 793    _EGLSurface *old_dsurf, *old_rsurf;
 794    __DRIdrawable *ddraw, *rdraw;
 795    __DRIcontext *cctx;
 796
 797    /* make new bindings */
 798    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
 799       return EGL_FALSE;
 800
 801    /* flush before context switch */
 802    if (old_ctx && dri2_drv->glFlush)
 803       dri2_drv->glFlush();
 804
 805    ddraw = (dri2_dsurf) ? dri2_dsurf->dri_drawable : NULL;
 806    rdraw = (dri2_rsurf) ? dri2_rsurf->dri_drawable : NULL;
 807    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
 808
 809    if (old_ctx) {
 810       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
 811       dri2_dpy->core->unbindContext(old_cctx);
 812    }
 813
 814    if ((cctx == NULL && ddraw == NULL && rdraw == NULL) ||
 815        dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
 816       if (old_dsurf)
 817          drv->API.DestroySurface(drv, disp, old_dsurf);
 818       if (old_rsurf)
 819          drv->API.DestroySurface(drv, disp, old_rsurf);
 820       if (old_ctx)
 821          drv->API.DestroyContext(drv, disp, old_ctx);
 822
 823       return EGL_TRUE;
 824    } else {
 825       /* undo the previous _eglBindContext */
 826       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &dsurf, &rsurf);
 827       assert(&dri2_ctx->base == ctx &&
 828              &dri2_dsurf->base == dsurf &&
 829              &dri2_rsurf->base == rsurf);
 830
 831       _eglPutSurface(dsurf);
 832       _eglPutSurface(rsurf);
 833       _eglPutContext(ctx);
 834
 835       _eglPutSurface(old_dsurf);
 836       _eglPutSurface(old_rsurf);
 837       _eglPutContext(old_ctx);
 838
 839       return EGL_FALSE;
 840    }
 841 }
 842
 843 /*
 844  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
 845  */
 846 static _EGLProc
 847 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
 848 {
 849    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 850
 851    return dri2_drv->get_proc_address(procname);
 852 }
 853
 854 static EGLBoolean
 855 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
 856 {
 857    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 858    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(ctx->DrawSurface);
 859
 860    (void) drv;
 861
 862    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
 863     * we need to copy fake to real here.*/
 864
 865    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 866
 867    return EGL_TRUE;
 868 }
 869
 870 static EGLBoolean
 871 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
 872 {
 873    (void) drv;
 874    (void) disp;
 875
 876    if (engine != EGL_CORE_NATIVE_ENGINE)
 877       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
 878    /* glXWaitX(); */
 879
 880    return EGL_TRUE;
 881 }
 882
 883 static EGLBoolean
 884 dri2_bind_tex_image(_EGLDriver *drv,
 885                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
 886 {
 887    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 888    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 889    struct dri2_egl_context *dri2_ctx;
 890    _EGLContext *ctx;
 891    GLint format, target;
 892
 893    ctx = _eglGetCurrentContext();
 894    dri2_ctx = dri2_egl_context(ctx);
 895
 896    if (!_eglBindTexImage(drv, disp, surf, buffer))
 897       return EGL_FALSE;
 898
 899    switch (dri2_surf->base.TextureFormat) {
 900    case EGL_TEXTURE_RGB:
 901       format = __DRI_TEXTURE_FORMAT_RGB;
 902       break;
 903    case EGL_TEXTURE_RGBA:
 904       format = __DRI_TEXTURE_FORMAT_RGBA;
 905       break;
 906    default:
 907       assert(0);
 908    }
 909
 910    switch (dri2_surf->base.TextureTarget) {
 911    case EGL_TEXTURE_2D:
 912       target = GL_TEXTURE_2D;
 913       break;
 914    default:
 915       assert(0);
 916    }
 917
 918    (*dri2_dpy->tex_buffer->setTexBuffer2)(dri2_ctx->dri_context,
 919                                           target, format,
 920                                           dri2_surf->dri_drawable);
 921
 922    return EGL_TRUE;
 923 }
 924
 925 static EGLBoolean
 926 dri2_release_tex_image(_EGLDriver *drv,
 927                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
 928 {
 929 #if __DRI_TEX_BUFFER_VERSION >= 3
 930    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 931    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 932    struct dri2_egl_context *dri2_ctx;
 933    _EGLContext *ctx;
 934    GLint  target;
 935
 936    ctx = _eglGetCurrentContext();
 937    dri2_ctx = dri2_egl_context(ctx);
 938
 939    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
 940       return EGL_FALSE;
 941
 942    switch (dri2_surf->base.TextureTarget) {
 943    case EGL_TEXTURE_2D:
 944       target = GL_TEXTURE_2D;
 945       break;
 946    default:
 947       assert(0);
 948    }
 949    if (dri2_dpy->tex_buffer->releaseTexBuffer!=NULL)
 950     (*dri2_dpy->tex_buffer->releaseTexBuffer)(dri2_ctx->dri_context,
 951                                              target,
 952                                              dri2_surf->dri_drawable);
 953 #endif
 954
 955    return EGL_TRUE;
 956 }
 957
 958 static _EGLImage *
 959 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
 960                                    EGLClientBuffer buffer,
 961                                    const EGLint *attr_list)
 962 {
 963    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 964    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
 965    struct dri2_egl_image *dri2_img;
 966    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
 967
 968    if (renderbuffer == 0) {
 969       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
 970       return EGL_NO_IMAGE_KHR;
 971    }
 972
 973    dri2_img = malloc(sizeof *dri2_img);
 974    if (!dri2_img) {
 975       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
 976       return EGL_NO_IMAGE_KHR;
 977    }
 978
 979    if (!_eglInitImage(&dri2_img->base, disp)) {
 980       free(dri2_img);
 981       return EGL_NO_IMAGE_KHR;
 982    }
 983
 984    dri2_img->dri_image =
 985       dri2_dpy->image->createImageFromRenderbuffer(dri2_ctx->dri_context,
 986                                                    renderbuffer,
 987                                                    dri2_img);
 988
 989    return &dri2_img->base;
 990 }
 991
 992 static _EGLImage *
 993 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
 994                                   EGLClientBuffer buffer, const EGLint *attr_list)
 995 {
 996    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 997    struct dri2_egl_image *dri2_img;
 998    EGLint format, name, pitch, err;
 999    _EGLImageAttribs attrs;
1000
1001    (void) ctx;
1002
1003    name = (EGLint) (uintptr_t) buffer;
1004
1005    err = _eglParseImageAttribList(&attrs, disp, attr_list);
1006    if (err != EGL_SUCCESS)
1007       return NULL;
1008
1009    if (attrs.Width <= 0 || attrs.Height <= 0 ||
1010        attrs.DRMBufferStrideMESA <= 0) {
1011       _eglError(EGL_BAD_PARAMETER,
1012                 "bad width, height or stride");
1013       return NULL;
1014    }
1015
1016    switch (attrs.DRMBufferFormatMESA) {
1017    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1018       format = __DRI_IMAGE_FORMAT_ARGB8888;
1019       pitch = attrs.DRMBufferStrideMESA;
1020       break;
1021    default:
1022       _eglError(EGL_BAD_PARAMETER,
1023                 "dri2_create_image_khr: unsupported pixmap depth");
1024       return NULL;
1025    }
1026
1027    dri2_img = malloc(sizeof *dri2_img);
1028    if (!dri2_img) {
1029       _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
1030       return NULL;
1031    }
1032
1033    if (!_eglInitImage(&dri2_img->base, disp)) {
1034       free(dri2_img);
1035       return NULL;
1036    }
1037
1038    dri2_img->dri_image =
1039       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1040                                            attrs.Width,
1041                                            attrs.Height,
1042                                            format,
1043                                            name,
1044                                            pitch,
1045                                            dri2_img);
1046    if (dri2_img->dri_image == NULL) {
1047       free(dri2_img);
1048       _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
1049       return NULL;
1050    }
1051
1052    return &dri2_img->base;
1053 }
1054
1055 #ifdef HAVE_WAYLAND_PLATFORM
1056 static _EGLImage *
1057 dri2_reference_drm_image(_EGLDisplay *disp, _EGLContext *ctx,
1058                          __DRIimage *dri_image, EGLint width, EGLint height)
1059 {
1060    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1061    EGLint attr_list[] = {
1062                 EGL_WIDTH,              0,
1063                 EGL_HEIGHT,             0,
1064                 EGL_DRM_BUFFER_STRIDE_MESA,     0,
1065                 EGL_DRM_BUFFER_FORMAT_MESA,     EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
1066                 EGL_NONE
1067    };
1068    EGLint name, stride;
1069
1070    dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_NAME, &name);
1071    dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
1072
1073    attr_list[1] = width;
1074    attr_list[3] = height;
1075    attr_list[5] = stride / 4;
1076
1077    return dri2_create_image_mesa_drm_buffer(disp, ctx,
1078                                             (EGLClientBuffer)(intptr_t) name,
1079                                             attr_list);
1080 }
1081
1082 static _EGLImage *
1083 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1084                                     EGLClientBuffer _buffer,
1085                                     const EGLint *attr_list)
1086 {
1087    struct wl_buffer *buffer = (struct wl_buffer *) _buffer;
1088    (void) attr_list;
1089
1090    if (!wayland_buffer_is_drm(buffer))
1091        return NULL;
1092
1093    return dri2_reference_drm_image(disp, ctx,
1094                                    wayland_drm_buffer_get_buffer(buffer),
1095                                    buffer->width,
1096                                    buffer->height);
1097 }
1098 #endif
1099
1100 _EGLImage *
1101 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1102                       _EGLContext *ctx, EGLenum target,
1103                       EGLClientBuffer buffer, const EGLint *attr_list)
1104 {
1105    (void) drv;
1106
1107    switch (target) {
1108    case EGL_GL_RENDERBUFFER_KHR:
1109       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
1110    case EGL_DRM_BUFFER_MESA:
1111       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
1112 #ifdef HAVE_WAYLAND_PLATFORM
1113    case EGL_WAYLAND_BUFFER_WL:
1114       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
1115 #endif
1116    default:
1117       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1118       return EGL_NO_IMAGE_KHR;
1119    }
1120 }
1121
1122 static EGLBoolean
1123 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
1124 {
1125    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1126    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
1127
1128    (void) drv;
1129
1130    dri2_dpy->image->destroyImage(dri2_img->dri_image);
1131    free(dri2_img);
1132
1133    return EGL_TRUE;
1134 }
1135
1136 static _EGLImage *
1137 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
1138                            const EGLint *attr_list)
1139 {
1140    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1141    struct dri2_egl_image *dri2_img;
1142    _EGLImageAttribs attrs;
1143    unsigned int dri_use, valid_mask;
1144    int format;
1145    EGLint err = EGL_SUCCESS;
1146
1147    (void) drv;
1148
1149    dri2_img = malloc(sizeof *dri2_img);
1150    if (!dri2_img) {
1151       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1152       return EGL_NO_IMAGE_KHR;
1153    }
1154
1155    if (!attr_list) {
1156       err = EGL_BAD_PARAMETER;
1157       goto cleanup_img;
1158    }
1159
1160    if (!_eglInitImage(&dri2_img->base, disp)) {
1161       err = EGL_BAD_PARAMETER;
1162       goto cleanup_img;
1163    }
1164
1165    err = _eglParseImageAttribList(&attrs, disp, attr_list);
1166    if (err != EGL_SUCCESS)
1167       goto cleanup_img;
1168
1169    if (attrs.Width <= 0 || attrs.Height <= 0) {
1170       _eglLog(_EGL_WARNING, "bad width or height (%dx%d)",
1171             attrs.Width, attrs.Height);
1172       goto cleanup_img;
1173    }
1174
1175    switch (attrs.DRMBufferFormatMESA) {
1176    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1177       format = __DRI_IMAGE_FORMAT_ARGB8888;
1178       break;
1179    default:
1180       _eglLog(_EGL_WARNING, "bad image format value 0x%04x",
1181             attrs.DRMBufferFormatMESA);
1182       goto cleanup_img;
1183    }
1184
1185    valid_mask =
1186       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
1187       EGL_DRM_BUFFER_USE_SHARE_MESA |
1188       EGL_DRM_BUFFER_USE_CURSOR_MESA;
1189    if (attrs.DRMBufferUseMESA & ~valid_mask) {
1190       _eglLog(_EGL_WARNING, "bad image use bit 0x%04x",
1191             attrs.DRMBufferUseMESA & ~valid_mask);
1192       goto cleanup_img;
1193    }
1194
1195    dri_use = 0;
1196    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
1197       dri_use |= __DRI_IMAGE_USE_SHARE;
1198    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
1199       dri_use |= __DRI_IMAGE_USE_SCANOUT;
1200    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
1201       dri_use |= __DRI_IMAGE_USE_CURSOR;
1202
1203    dri2_img->dri_image =
1204       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
1205                                    attrs.Width, attrs.Height,
1206                                    format, dri_use, dri2_img);
1207    if (dri2_img->dri_image == NULL) {
1208       err = EGL_BAD_ALLOC;
1209       goto cleanup_img;
1210    }
1211
1212    return &dri2_img->base;
1213
1214  cleanup_img:
1215    free(dri2_img);
1216    _eglError(err, "dri2_create_drm_image_mesa");
1217
1218    return EGL_NO_IMAGE_KHR;
1219 }
1220
1221 static EGLBoolean
1222 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
1223                           EGLint *name, EGLint *handle, EGLint *stride)
1224 {
1225    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1226    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
1227
1228    (void) drv;
1229
1230    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
1231                                             __DRI_IMAGE_ATTRIB_NAME, name)) {
1232       _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
1233       return EGL_FALSE;
1234    }
1235
1236    if (handle)
1237       dri2_dpy->image->queryImage(dri2_img->dri_image,
1238                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
1239
1240    if (stride)
1241       dri2_dpy->image->queryImage(dri2_img->dri_image,
1242                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
1243
1244    return EGL_TRUE;
1245 }
1246
1247 #ifdef HAVE_WAYLAND_PLATFORM
1248
1249 static void *
1250 dri2_wl_reference_buffer(void *user_data, uint32_t name,
1251                          int32_t width, int32_t height,
1252                          uint32_t stride, struct wl_visual *visual)
1253 {
1254    _EGLDisplay *disp = user_data;
1255    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1256    __DRIimage *image;
1257
1258    image = dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1259                                                 width, height,
1260                                                 __DRI_IMAGE_FORMAT_ARGB8888,
1261                                                 name, stride / 4,
1262                                                 NULL);
1263
1264    return image;
1265 }
1266
1267 static void
1268 dri2_wl_release_buffer(void *user_data, void *buffer)
1269 {
1270    _EGLDisplay *disp = user_data;
1271    __DRIimage *image = buffer;
1272    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1273
1274    dri2_dpy->image->destroyImage(image);
1275 }
1276
1277 static struct wayland_drm_callbacks wl_drm_callbacks = {
1278         .authenticate = NULL,
1279         .reference_buffer = dri2_wl_reference_buffer,
1280         .release_buffer = dri2_wl_release_buffer
1281 };
1282
1283 static EGLBoolean
1284 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1285                              struct wl_display *wl_dpy)
1286 {
1287    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1288
1289    (void) drv;
1290
1291    if (dri2_dpy->wl_server_drm)
1292            return EGL_FALSE;
1293
1294    wl_drm_callbacks.authenticate =
1295       (int(*)(void *, uint32_t)) dri2_dpy->authenticate;
1296
1297    dri2_dpy->wl_server_drm =
1298            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
1299                             &wl_drm_callbacks, disp);
1300
1301    if (!dri2_dpy->wl_server_drm)
1302            return EGL_FALSE;
1303
1304    return EGL_TRUE;
1305 }
1306
1307 static EGLBoolean
1308 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1309                                struct wl_display *wl_dpy)
1310 {
1311    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1312
1313    (void) drv;
1314
1315    if (!dri2_dpy->wl_server_drm)
1316            return EGL_FALSE;
1317
1318    wayland_drm_uninit(dri2_dpy->wl_server_drm);
1319    dri2_dpy->wl_server_drm = NULL;
1320
1321    return EGL_TRUE;
1322 }
1323 #endif
1324
1325 static void
1326 dri2_unload(_EGLDriver *drv)
1327 {
1328    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1329
1330    if (dri2_drv->handle)
1331       dlclose(dri2_drv->handle);
1332    free(dri2_drv);
1333 }
1334
1335 static EGLBoolean
1336 dri2_load(_EGLDriver *drv)
1337 {
1338    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1339 #ifdef HAVE_SHARED_GLAPI
1340 #ifdef HAVE_ANDROID_PLATFORM
1341    const char *libname = "libglapi.so";
1342 #else
1343    const char *libname = "libglapi.so.0";
1344 #endif
1345 #else
1346    /*
1347     * Both libGL.so and libglapi.so are glapi providers.  There is no way to
1348     * tell which one to load.
1349     */
1350    const char *libname = NULL;
1351 #endif
1352    void *handle;
1353
1354    /* RTLD_GLOBAL to make sure glapi symbols are visible to DRI drivers */
1355    handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL);
1356    if (handle) {
1357       dri2_drv->get_proc_address = (_EGLProc (*)(const char *))
1358          dlsym(handle, "_glapi_get_proc_address");
1359       if (!dri2_drv->get_proc_address || !libname) {
1360          /* no need to keep a reference */
1361          dlclose(handle);
1362          handle = NULL;
1363       }
1364    }
1365
1366    /* if glapi is not available, loading DRI drivers will fail */
1367    if (!dri2_drv->get_proc_address) {
1368       _eglLog(_EGL_WARNING, "DRI2: failed to find _glapi_get_proc_address");
1369       return EGL_FALSE;
1370    }
1371
1372    dri2_drv->glFlush = (void (*)(void))
1373       dri2_drv->get_proc_address("glFlush");
1374
1375    dri2_drv->handle = handle;
1376
1377    return EGL_TRUE;
1378 }
1379
1380 /**
1381  * This is the main entrypoint into the driver, called by libEGL.
1382  * Create a new _EGLDriver object and init its dispatch table.
1383  */
1384 _EGLDriver *
1385 _EGL_MAIN(const char *args)
1386 {
1387    struct dri2_egl_driver *dri2_drv;
1388
1389    (void) args;
1390
1391    dri2_drv = malloc(sizeof *dri2_drv);
1392    if (!dri2_drv)
1393       return NULL;
1394
1395    memset(dri2_drv, 0, sizeof *dri2_drv);
1396
1397    if (!dri2_load(&dri2_drv->base)) {
1398       free(dri2_drv);
1399       return NULL;
1400    }
1401
1402    _eglInitDriverFallbacks(&dri2_drv->base);
1403    dri2_drv->base.API.Initialize = dri2_initialize;
1404    dri2_drv->base.API.Terminate = dri2_terminate;
1405    dri2_drv->base.API.CreateContext = dri2_create_context;
1406    dri2_drv->base.API.DestroyContext = dri2_destroy_context;
1407    dri2_drv->base.API.MakeCurrent = dri2_make_current;
1408    dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
1409    dri2_drv->base.API.WaitClient = dri2_wait_client;
1410    dri2_drv->base.API.WaitNative = dri2_wait_native;
1411    dri2_drv->base.API.BindTexImage = dri2_bind_tex_image;
1412    dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image;
1413    dri2_drv->base.API.CreateImageKHR = dri2_create_image_khr;
1414    dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr;
1415    dri2_drv->base.API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
1416    dri2_drv->base.API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
1417 #ifdef HAVE_WAYLAND_PLATFORM
1418    dri2_drv->base.API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
1419    dri2_drv->base.API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
1420 #endif
1421
1422    dri2_drv->base.Name = "DRI2";
1423    dri2_drv->base.Unload = dri2_unload;
1424
1425    return &dri2_drv->base;
1426 }