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 <stdbool.h>
  29 #include <stdint.h>
  30 #include <stdbool.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdio.h>
  34 #include <limits.h>
  35 #include <dlfcn.h>
  36 #include <fcntl.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <c11/threads.h>
  40 #include <time.h>
  41 #ifdef HAVE_LIBDRM
  42 #include <xf86drm.h>
  43 #include <drm_fourcc.h>
  44 #endif
  45 #include <GL/gl.h>
  46 #include <GL/internal/dri_interface.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49
  50 #ifdef HAVE_WAYLAND_PLATFORM
  51 #include "wayland-drm.h"
  52 #include "wayland-drm-client-protocol.h"
  53 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  54 #endif
  55
  56 #ifdef HAVE_X11_PLATFORM
  57 #include "X11/Xlibint.h"
  58 #endif
  59
  60 #include "egl_dri2.h"
  61 #include "GL/mesa_glinterop.h"
  62 #include "loader/loader.h"
  63 #include "util/u_atomic.h"
  64 #include "util/u_vector.h"
  65 #include "mapi/glapi/glapi.h"
  66
  67 /* The kernel header drm_fourcc.h defines the DRM formats below.  We duplicate
  68  * some of the definitions here so that building Mesa won't bleeding-edge
  69  * kernel headers.
  70  */
  71 #ifndef DRM_FORMAT_R8
  72 #define DRM_FORMAT_R8            fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
  73 #endif
  74
  75 #ifndef DRM_FORMAT_RG88
  76 #define DRM_FORMAT_RG88          fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
  77 #endif
  78
  79 #ifndef DRM_FORMAT_GR88
  80 #define DRM_FORMAT_GR88          fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
  81 #endif
  82
  83 #ifndef DRM_FORMAT_R16
  84 #define DRM_FORMAT_R16           fourcc_code('R', '1', '6', ' ') /* [15:0] R 16 little endian */
  85 #endif
  86
  87 #ifndef DRM_FORMAT_GR1616
  88 #define DRM_FORMAT_GR1616        fourcc_code('G', 'R', '3', '2') /* [31:0] R:G 16:16 little endian */
  89 #endif
  90
  91 #ifndef DRM_FORMAT_MOD_INVALID
  92 #define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
  93 #endif
  94
  95 #define NUM_ATTRIBS 10
  96
  97 static void
  98 dri_set_background_context(void *loaderPrivate)
  99 {
 100    _EGLContext *ctx = _eglGetCurrentContext();
 101    _EGLThreadInfo *t = _eglGetCurrentThread();
 102
 103    _eglBindContextToThread(ctx, t);
 104 }
 105
 106 static void
 107 dri2_gl_flush()
 108 {
 109    static void (*glFlush)(void);
 110    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 111
 112    mtx_lock(&glFlushMutex);
 113    if (!glFlush)
 114       glFlush = _glapi_get_proc_address("glFlush");
 115    mtx_unlock(&glFlushMutex);
 116
 117    /* if glFlush is not available things are horribly broken */
 118    if (!glFlush) {
 119       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 120       return;
 121    }
 122
 123    glFlush();
 124 }
 125
 126 static GLboolean
 127 dri_is_thread_safe(void *loaderPrivate)
 128 {
 129    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 130    _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 131
 132 #ifdef HAVE_X11_PLATFORM
 133    Display *xdpy = (Display*)display->PlatformDisplay;
 134
 135    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 136     * platform
 137     *
 138     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 139     * It wll be NULL if XInitThreads wasn't called.
 140     */
 141    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 142       return false;
 143 #endif
 144
 145 #ifdef HAVE_WAYLAND_PLATFORM
 146    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 147       return true;
 148 #endif
 149
 150    return true;
 151 }
 152
 153 const __DRIbackgroundCallableExtension background_callable_extension = {
 154    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 155
 156    .setBackgroundContext = dri_set_background_context,
 157    .isThreadSafe         = dri_is_thread_safe,
 158 };
 159
 160 const __DRIuseInvalidateExtension use_invalidate = {
 161    .base = { __DRI_USE_INVALIDATE, 1 }
 162 };
 163
 164 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 165    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 166    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 167    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,
 168    [__DRI_ATTRIB_GREEN_SIZE]            = EGL_GREEN_SIZE,
 169    [__DRI_ATTRIB_BLUE_SIZE]             = EGL_BLUE_SIZE,
 170    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 171    [__DRI_ATTRIB_ALPHA_SIZE]            = EGL_ALPHA_SIZE,
 172    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 173    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 174    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 175    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 176    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 177    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 178    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 179    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 180    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 181    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 182 };
 183
 184 const __DRIconfig *
 185 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 186                     EGLenum colorspace)
 187 {
 188    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 189    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 190
 191    return conf->dri_config[double_buffer][srgb];
 192 }
 193
 194 static EGLBoolean
 195 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 196 {
 197    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 198       return EGL_FALSE;
 199
 200    if (!_eglMatchConfig(conf, criteria))
 201       return EGL_FALSE;
 202
 203    return EGL_TRUE;
 204 }
 205
 206 struct dri2_egl_config *
 207 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 208                 EGLint surface_type, const EGLint *attr_list,
 209                 const unsigned int *rgba_masks)
 210 {
 211    struct dri2_egl_config *conf;
 212    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 213    _EGLConfig base;
 214    unsigned int attrib, value, double_buffer;
 215    bool srgb = false;
 216    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 217    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 218    _EGLConfig *matching_config;
 219    EGLint num_configs = 0;
 220    EGLint config_id;
 221
 222    _eglInitConfig(&base, disp, id);
 223
 224    double_buffer = 0;
 225    bind_to_texture_rgb = 0;
 226    bind_to_texture_rgba = 0;
 227
 228    for (int i = 0; dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib,
 229                                                      &value); ++i) {
 230       switch (attrib) {
 231       case __DRI_ATTRIB_RENDER_TYPE:
 232          if (value & __DRI_ATTRIB_RGBA_BIT)
 233             value = EGL_RGB_BUFFER;
 234          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 235             value = EGL_LUMINANCE_BUFFER;
 236          else
 237             return NULL;
 238          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 239          break;
 240
 241       case __DRI_ATTRIB_CONFIG_CAVEAT:
 242          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 243             value = EGL_NON_CONFORMANT_CONFIG;
 244          else if (value & __DRI_ATTRIB_SLOW_BIT)
 245             value = EGL_SLOW_CONFIG;
 246          else
 247             value = EGL_NONE;
 248          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 249          break;
 250
 251       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 252          bind_to_texture_rgb = value;
 253          break;
 254
 255       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 256          bind_to_texture_rgba = value;
 257          break;
 258
 259       case __DRI_ATTRIB_DOUBLE_BUFFER:
 260          double_buffer = value;
 261          break;
 262
 263       case __DRI_ATTRIB_RED_MASK:
 264          dri_masks[0] = value;
 265          break;
 266
 267       case __DRI_ATTRIB_GREEN_MASK:
 268          dri_masks[1] = value;
 269          break;
 270
 271       case __DRI_ATTRIB_BLUE_MASK:
 272          dri_masks[2] = value;
 273          break;
 274
 275       case __DRI_ATTRIB_ALPHA_MASK:
 276          dri_masks[3] = value;
 277          break;
 278
 279       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 280       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 281       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 282       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 283          /* Don't expose visuals with the accumulation buffer. */
 284          if (value > 0)
 285             return NULL;
 286          break;
 287
 288       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 289          srgb = value != 0;
 290          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 291             return NULL;
 292          break;
 293
 294       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 295          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 296                           _EGL_MAX_PBUFFER_WIDTH);
 297          break;
 298       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 299          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 300                           _EGL_MAX_PBUFFER_HEIGHT);
 301          break;
 302
 303       default:
 304          key = dri2_to_egl_attribute_map[attrib];
 305          if (key != 0)
 306             _eglSetConfigKey(&base, key, value);
 307          break;
 308       }
 309    }
 310
 311    if (attr_list)
 312       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 313          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 314
 315    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 316       return NULL;
 317
 318    base.NativeRenderable = EGL_TRUE;
 319
 320    base.SurfaceType = surface_type;
 321    if (surface_type & (EGL_PBUFFER_BIT |
 322        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 323       base.BindToTextureRGB = bind_to_texture_rgb;
 324       if (base.AlphaSize > 0)
 325          base.BindToTextureRGBA = bind_to_texture_rgba;
 326    }
 327
 328    base.RenderableType = disp->ClientAPIs;
 329    base.Conformant = disp->ClientAPIs;
 330
 331    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 332    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 333
 334    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 335       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 336       return NULL;
 337    }
 338
 339    config_id = base.ConfigID;
 340    base.ConfigID    = EGL_DONT_CARE;
 341    base.SurfaceType = EGL_DONT_CARE;
 342    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 343                                  (_EGLArrayForEach) dri2_match_config, &base);
 344
 345    if (num_configs == 1) {
 346       conf = (struct dri2_egl_config *) matching_config;
 347
 348       if (!conf->dri_config[double_buffer][srgb])
 349          conf->dri_config[double_buffer][srgb] = dri_config;
 350       else
 351          /* a similar config type is already added (unlikely) => discard */
 352          return NULL;
 353    }
 354    else if (num_configs == 0) {
 355       conf = calloc(1, sizeof *conf);
 356       if (conf == NULL)
 357          return NULL;
 358
 359       conf->dri_config[double_buffer][srgb] = dri_config;
 360
 361       memcpy(&conf->base, &base, sizeof base);
 362       conf->base.SurfaceType = 0;
 363       conf->base.ConfigID = config_id;
 364
 365       _eglLinkConfig(&conf->base);
 366    }
 367    else {
 368       assert(0);
 369       return NULL;
 370    }
 371
 372    if (double_buffer) {
 373       surface_type &= ~EGL_PIXMAP_BIT;
 374    }
 375
 376    /* No support for pbuffer + MSAA for now.
 377     *
 378     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 379     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 380     */
 381    if (base.Samples) {
 382       surface_type &= ~EGL_PBUFFER_BIT;
 383    }
 384
 385    conf->base.SurfaceType |= surface_type;
 386
 387    return conf;
 388 }
 389
 390 __DRIimage *
 391 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 392 {
 393    _EGLDisplay *disp = data;
 394    struct dri2_egl_image *dri2_img;
 395    _EGLImage *img;
 396
 397    (void) screen;
 398
 399    img = _eglLookupImage(image, disp);
 400    if (img == NULL) {
 401       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 402       return NULL;
 403    }
 404
 405    dri2_img = dri2_egl_image(image);
 406
 407    return dri2_img->dri_image;
 408 }
 409
 410 const __DRIimageLookupExtension image_lookup_extension = {
 411    .base = { __DRI_IMAGE_LOOKUP, 1 },
 412
 413    .lookupEGLImage       = dri2_lookup_egl_image
 414 };
 415
 416 struct dri2_extension_match {
 417    const char *name;
 418    int version;
 419    int offset;
 420 };
 421
 422 static const struct dri2_extension_match dri3_driver_extensions[] = {
 423    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 424    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 425    { NULL, 0, 0 }
 426 };
 427
 428 static const struct dri2_extension_match dri2_driver_extensions[] = {
 429    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 430    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 431    { NULL, 0, 0 }
 432 };
 433
 434 static const struct dri2_extension_match dri2_core_extensions[] = {
 435    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 436    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 437    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 438    { NULL, 0, 0 }
 439 };
 440
 441 static const struct dri2_extension_match swrast_driver_extensions[] = {
 442    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 443    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 444    { NULL, 0, 0 }
 445 };
 446
 447 static const struct dri2_extension_match swrast_core_extensions[] = {
 448    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 449    { NULL, 0, 0 }
 450 };
 451
 452 static const struct dri2_extension_match optional_core_extensions[] = {
 453    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 454    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 455    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 456    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 457    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 458    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 459    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 460    { NULL, 0, 0 }
 461 };
 462
 463 static EGLBoolean
 464 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 465                      const struct dri2_extension_match *matches,
 466                      const __DRIextension **extensions,
 467                      bool optional)
 468 {
 469    int ret = EGL_TRUE;
 470    void *field;
 471
 472    for (int i = 0; extensions[i]; i++) {
 473       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 474       for (int j = 0; matches[j].name; j++) {
 475          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 476              extensions[i]->version >= matches[j].version) {
 477             field = ((char *) dri2_dpy + matches[j].offset);
 478             *(const __DRIextension **) field = extensions[i];
 479             _eglLog(_EGL_INFO, "found extension %s version %d",
 480                     extensions[i]->name, extensions[i]->version);
 481             break;
 482          }
 483       }
 484    }
 485
 486    for (int j = 0; matches[j].name; j++) {
 487       field = ((char *) dri2_dpy + matches[j].offset);
 488       if (*(const __DRIextension **) field == NULL) {
 489          if (optional) {
 490             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 491                     matches[j].name, matches[j].version);
 492          } else {
 493             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 494                     matches[j].name, matches[j].version);
 495             ret = EGL_FALSE;
 496          }
 497       }
 498    }
 499
 500    return ret;
 501 }
 502
 503 static const __DRIextension **
 504 dri2_open_driver(_EGLDisplay *disp)
 505 {
 506    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 507    const __DRIextension **extensions = NULL;
 508    char path[PATH_MAX], *search_paths, *next, *end;
 509    char *get_extensions_name;
 510    const __DRIextension **(*get_extensions)(void);
 511
 512    search_paths = NULL;
 513    if (geteuid() == getuid()) {
 514       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 515       search_paths = getenv("LIBGL_DRIVERS_PATH");
 516    }
 517    if (search_paths == NULL)
 518       search_paths = DEFAULT_DRIVER_DIR;
 519
 520    dri2_dpy->driver = NULL;
 521    end = search_paths + strlen(search_paths);
 522    for (char *p = search_paths; p < end; p = next + 1) {
 523       int len;
 524       next = strchr(p, ':');
 525       if (next == NULL)
 526          next = end;
 527
 528       len = next - p;
 529 #if GLX_USE_TLS
 530       snprintf(path, sizeof path,
 531                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 532       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 533 #endif
 534       if (dri2_dpy->driver == NULL) {
 535          snprintf(path, sizeof path,
 536                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 537          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 538          if (dri2_dpy->driver == NULL)
 539             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 540       }
 541       /* not need continue to loop all paths once the driver is found */
 542       if (dri2_dpy->driver != NULL)
 543          break;
 544    }
 545
 546    if (dri2_dpy->driver == NULL) {
 547       _eglLog(_EGL_WARNING,
 548               "DRI2: failed to open %s (search paths %s)",
 549               dri2_dpy->driver_name, search_paths);
 550       return NULL;
 551    }
 552
 553    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 554
 555    get_extensions_name = loader_get_extensions_name(dri2_dpy->driver_name);
 556    if (get_extensions_name) {
 557       get_extensions = dlsym(dri2_dpy->driver, get_extensions_name);
 558       if (get_extensions) {
 559          extensions = get_extensions();
 560       } else {
 561          _eglLog(_EGL_DEBUG, "driver does not expose %s(): %s\n",
 562                  get_extensions_name, dlerror());
 563       }
 564       free(get_extensions_name);
 565    }
 566
 567    if (!extensions)
 568       extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 569    if (extensions == NULL) {
 570       _eglLog(_EGL_WARNING,
 571               "DRI2: driver exports no extensions (%s)", dlerror());
 572       dlclose(dri2_dpy->driver);
 573    }
 574
 575    return extensions;
 576 }
 577
 578 EGLBoolean
 579 dri2_load_driver_dri3(_EGLDisplay *disp)
 580 {
 581    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 582    const __DRIextension **extensions;
 583
 584    extensions = dri2_open_driver(disp);
 585    if (!extensions)
 586       return EGL_FALSE;
 587
 588    if (!dri2_bind_extensions(dri2_dpy, dri3_driver_extensions, extensions, false)) {
 589       dlclose(dri2_dpy->driver);
 590       return EGL_FALSE;
 591    }
 592    dri2_dpy->driver_extensions = extensions;
 593
 594    return EGL_TRUE;
 595 }
 596
 597 EGLBoolean
 598 dri2_load_driver(_EGLDisplay *disp)
 599 {
 600    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 601    const __DRIextension **extensions;
 602
 603    extensions = dri2_open_driver(disp);
 604    if (!extensions)
 605       return EGL_FALSE;
 606
 607    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions, false)) {
 608       dlclose(dri2_dpy->driver);
 609       return EGL_FALSE;
 610    }
 611    dri2_dpy->driver_extensions = extensions;
 612
 613    return EGL_TRUE;
 614 }
 615
 616 EGLBoolean
 617 dri2_load_driver_swrast(_EGLDisplay *disp)
 618 {
 619    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 620    const __DRIextension **extensions;
 621
 622    extensions = dri2_open_driver(disp);
 623    if (!extensions)
 624       return EGL_FALSE;
 625
 626    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions, false)) {
 627       dlclose(dri2_dpy->driver);
 628       return EGL_FALSE;
 629    }
 630    dri2_dpy->driver_extensions = extensions;
 631
 632    return EGL_TRUE;
 633 }
 634
 635 static unsigned
 636 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 637 {
 638    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 639    unsigned int value = 0;
 640
 641    if (!rendererQuery ||
 642        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 643       return 0;
 644
 645    return value;
 646 }
 647
 648 void
 649 dri2_setup_screen(_EGLDisplay *disp)
 650 {
 651    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 652    unsigned int api_mask;
 653
 654    /*
 655     * EGL 1.5 specification defines the default value to 1. Moreover,
 656     * eglSwapInterval() is required to clamp requested value to the supported
 657     * range. Since the default value is implicitly assumed to be supported,
 658     * use it as both minimum and maximum for the platforms that do not allow
 659     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 660     * override these values already.
 661     */
 662    dri2_dpy->min_swap_interval = 1;
 663    dri2_dpy->max_swap_interval = 1;
 664    dri2_dpy->default_swap_interval = 1;
 665
 666    if (dri2_dpy->image_driver) {
 667       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 668    } else if (dri2_dpy->dri2) {
 669       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 670    } else {
 671       assert(dri2_dpy->swrast);
 672       api_mask = 1 << __DRI_API_OPENGL |
 673                  1 << __DRI_API_GLES |
 674                  1 << __DRI_API_GLES2 |
 675                  1 << __DRI_API_GLES3;
 676    }
 677
 678    disp->ClientAPIs = 0;
 679    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 680       disp->ClientAPIs |= EGL_OPENGL_BIT;
 681    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 682       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 683    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 684       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 685    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 686       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 687
 688    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 689    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 690    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 691
 692    /* Report back to EGL the bitmask of priorities supported */
 693    disp->Extensions.IMG_context_priority =
 694       dri2_renderer_query_integer(dri2_dpy,
 695                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 696
 697    if (dri2_renderer_query_integer(dri2_dpy,
 698                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 699       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 700
 701    if (dri2_dpy->image_driver ||
 702        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 703        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 704       disp->Extensions.KHR_create_context = EGL_TRUE;
 705
 706       if (dri2_dpy->robustness)
 707          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 708    }
 709
 710    if (dri2_dpy->no_error)
 711       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 712
 713    if (dri2_dpy->fence) {
 714       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 715       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 716       if (dri2_dpy->fence->get_fence_from_cl_event)
 717          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 718       if (dri2_dpy->fence->base.version >= 2 &&
 719           dri2_dpy->fence->get_capabilities) {
 720          unsigned capabilities =
 721             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 722          disp->Extensions.ANDROID_native_fence_sync =
 723             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 724       }
 725    }
 726
 727    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 728
 729    if (dri2_dpy->image) {
 730       if (dri2_dpy->image->base.version >= 10 &&
 731           dri2_dpy->image->getCapabilities != NULL) {
 732          int capabilities;
 733
 734          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 735          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 736
 737          if (dri2_dpy->image->base.version >= 11)
 738             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 739       } else {
 740          disp->Extensions.MESA_drm_image = EGL_TRUE;
 741          if (dri2_dpy->image->base.version >= 11)
 742             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 743       }
 744
 745       disp->Extensions.KHR_image_base = EGL_TRUE;
 746       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 747       if (dri2_dpy->image->base.version >= 5 &&
 748           dri2_dpy->image->createImageFromTexture) {
 749          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 750          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 751
 752          if (dri2_renderer_query_integer(dri2_dpy,
 753                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 754              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 755       }
 756 #ifdef HAVE_LIBDRM
 757       if (dri2_dpy->image->base.version >= 8 &&
 758           dri2_dpy->image->createImageFromDmaBufs) {
 759          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 760       }
 761       if (dri2_dpy->image->base.version >= 15 &&
 762           dri2_dpy->image->createImageFromDmaBufs2 &&
 763           dri2_dpy->image->queryDmaBufFormats &&
 764           dri2_dpy->image->queryDmaBufModifiers) {
 765          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 766       }
 767 #endif
 768    }
 769 }
 770
 771 void
 772 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 773 {
 774    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 775    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 776
 777    /* Allow driconf to override applications.*/
 778    if (dri2_dpy->config)
 779       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 780                                      "vblank_mode", &vblank_mode);
 781    switch (vblank_mode) {
 782    case DRI_CONF_VBLANK_NEVER:
 783       dri2_dpy->min_swap_interval = 0;
 784       dri2_dpy->max_swap_interval = 0;
 785       dri2_dpy->default_swap_interval = 0;
 786       break;
 787    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 788       dri2_dpy->min_swap_interval = 1;
 789       dri2_dpy->max_swap_interval = max_swap_interval;
 790       dri2_dpy->default_swap_interval = 1;
 791       break;
 792    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 793       dri2_dpy->min_swap_interval = 0;
 794       dri2_dpy->max_swap_interval = max_swap_interval;
 795       dri2_dpy->default_swap_interval = 0;
 796       break;
 797    default:
 798    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 799       dri2_dpy->min_swap_interval = 0;
 800       dri2_dpy->max_swap_interval = max_swap_interval;
 801       dri2_dpy->default_swap_interval = 1;
 802       break;
 803    }
 804 }
 805
 806 /* All platforms but DRM call this function to create the screen and populate
 807  * the driver_configs. DRM inherits that information from its display - GBM.
 808  */
 809 EGLBoolean
 810 dri2_create_screen(_EGLDisplay *disp)
 811 {
 812    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 813
 814    if (dri2_dpy->image_driver) {
 815       dri2_dpy->dri_screen =
 816          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 817                                                   dri2_dpy->loader_extensions,
 818                                                   dri2_dpy->driver_extensions,
 819                                                   &dri2_dpy->driver_configs,
 820                                                   disp);
 821    } else if (dri2_dpy->dri2) {
 822       if (dri2_dpy->dri2->base.version >= 4) {
 823          dri2_dpy->dri_screen =
 824             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 825                                              dri2_dpy->loader_extensions,
 826                                              dri2_dpy->driver_extensions,
 827                                              &dri2_dpy->driver_configs, disp);
 828       } else {
 829          dri2_dpy->dri_screen =
 830             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 831                                             dri2_dpy->loader_extensions,
 832                                             &dri2_dpy->driver_configs, disp);
 833       }
 834    } else {
 835       assert(dri2_dpy->swrast);
 836       if (dri2_dpy->swrast->base.version >= 4) {
 837          dri2_dpy->dri_screen =
 838             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 839                                                dri2_dpy->driver_extensions,
 840                                                &dri2_dpy->driver_configs, disp);
 841       } else {
 842          dri2_dpy->dri_screen =
 843             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 844                                               &dri2_dpy->driver_configs, disp);
 845       }
 846    }
 847
 848    if (dri2_dpy->dri_screen == NULL) {
 849       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 850       return EGL_FALSE;
 851    }
 852
 853    dri2_dpy->own_dri_screen = true;
 854    return EGL_TRUE;
 855 }
 856
 857 EGLBoolean
 858 dri2_setup_extensions(_EGLDisplay *disp)
 859 {
 860    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 861    const struct dri2_extension_match *mandatory_core_extensions;
 862    const __DRIextension **extensions;
 863
 864    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 865
 866    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 867       mandatory_core_extensions = dri2_core_extensions;
 868    else
 869       mandatory_core_extensions = swrast_core_extensions;
 870
 871    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 872       return EGL_FALSE;
 873
 874    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 875    return EGL_TRUE;
 876 }
 877
 878 /**
 879  * Called via eglInitialize(), GLX_drv->API.Initialize().
 880  *
 881  * This must be guaranteed to be called exactly once, even if eglInitialize is
 882  * called many times (without a eglTerminate in between).
 883  */
 884 static EGLBoolean
 885 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 886 {
 887    EGLBoolean ret = EGL_FALSE;
 888    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 889
 890    /* In the case where the application calls eglMakeCurrent(context1),
 891     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 892     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 893     * initialized, as we need it to be able to free context1 correctly.
 894     *
 895     * It would probably be safest to forcibly release the display with
 896     * dri2_display_release, to make sure the display is reinitialized correctly.
 897     * However, the EGL spec states that we need to keep a reference to the
 898     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 899     * we would leak context1 as we would be missing the old display connection
 900     * to free it up correctly.
 901     */
 902    if (dri2_dpy) {
 903       dri2_dpy->ref_count++;
 904       return EGL_TRUE;
 905    }
 906
 907    /* not until swrast_dri is supported */
 908    if (disp->Options.UseFallback)
 909       return EGL_FALSE;
 910
 911    switch (disp->Platform) {
 912 #ifdef HAVE_SURFACELESS_PLATFORM
 913    case _EGL_PLATFORM_SURFACELESS:
 914       ret = dri2_initialize_surfaceless(drv, disp);
 915       break;
 916 #endif
 917 #ifdef HAVE_X11_PLATFORM
 918    case _EGL_PLATFORM_X11:
 919       ret = dri2_initialize_x11(drv, disp);
 920       break;
 921 #endif
 922 #ifdef HAVE_DRM_PLATFORM
 923    case _EGL_PLATFORM_DRM:
 924       ret = dri2_initialize_drm(drv, disp);
 925       break;
 926 #endif
 927 #ifdef HAVE_WAYLAND_PLATFORM
 928    case _EGL_PLATFORM_WAYLAND:
 929       ret = dri2_initialize_wayland(drv, disp);
 930       break;
 931 #endif
 932 #ifdef HAVE_ANDROID_PLATFORM
 933    case _EGL_PLATFORM_ANDROID:
 934       ret = dri2_initialize_android(drv, disp);
 935       break;
 936 #endif
 937    default:
 938       _eglLog(_EGL_WARNING, "No EGL platform enabled.");
 939       return EGL_FALSE;
 940    }
 941
 942    if (!ret)
 943       return EGL_FALSE;
 944
 945    dri2_dpy = dri2_egl_display(disp);
 946    dri2_dpy->ref_count++;
 947
 948    return EGL_TRUE;
 949 }
 950
 951 /**
 952  * Decrement display reference count, and free up display if necessary.
 953  */
 954 static void
 955 dri2_display_release(_EGLDisplay *disp)
 956 {
 957    struct dri2_egl_display *dri2_dpy;
 958
 959    if (!disp)
 960       return;
 961
 962    dri2_dpy = dri2_egl_display(disp);
 963
 964    assert(dri2_dpy->ref_count > 0);
 965    dri2_dpy->ref_count--;
 966
 967    if (dri2_dpy->ref_count > 0)
 968       return;
 969
 970    _eglCleanupDisplay(disp);
 971    dri2_display_destroy(disp);
 972 }
 973
 974 void
 975 dri2_display_destroy(_EGLDisplay *disp)
 976 {
 977    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 978
 979    if (dri2_dpy->own_dri_screen) {
 980       if (dri2_dpy->vtbl->close_screen_notify)
 981          dri2_dpy->vtbl->close_screen_notify(disp);
 982       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 983    }
 984    if (dri2_dpy->fd >= 0)
 985       close(dri2_dpy->fd);
 986    if (dri2_dpy->driver)
 987       dlclose(dri2_dpy->driver);
 988    free(dri2_dpy->driver_name);
 989
 990 #ifdef HAVE_WAYLAND_PLATFORM
 991    free(dri2_dpy->device_name);
 992 #endif
 993
 994    switch (disp->Platform) {
 995 #ifdef HAVE_X11_PLATFORM
 996    case _EGL_PLATFORM_X11:
 997       if (dri2_dpy->own_device) {
 998          xcb_disconnect(dri2_dpy->conn);
 999       }
1000       break;
1001 #endif
1002 #ifdef HAVE_DRM_PLATFORM
1003    case _EGL_PLATFORM_DRM:
1004       if (dri2_dpy->own_device) {
1005          gbm_device_destroy(&dri2_dpy->gbm_dri->base);
1006       }
1007       break;
1008 #endif
1009 #ifdef HAVE_WAYLAND_PLATFORM
1010    case _EGL_PLATFORM_WAYLAND:
1011       if (dri2_dpy->wl_drm)
1012           wl_drm_destroy(dri2_dpy->wl_drm);
1013       if (dri2_dpy->wl_dmabuf)
1014           zwp_linux_dmabuf_v1_destroy(dri2_dpy->wl_dmabuf);
1015       if (dri2_dpy->wl_shm)
1016           wl_shm_destroy(dri2_dpy->wl_shm);
1017       if (dri2_dpy->wl_registry)
1018          wl_registry_destroy(dri2_dpy->wl_registry);
1019       if (dri2_dpy->wl_queue)
1020          wl_event_queue_destroy(dri2_dpy->wl_queue);
1021       if (dri2_dpy->wl_dpy_wrapper)
1022          wl_proxy_wrapper_destroy(dri2_dpy->wl_dpy_wrapper);
1023       u_vector_finish(&dri2_dpy->wl_modifiers.argb8888);
1024       u_vector_finish(&dri2_dpy->wl_modifiers.xrgb8888);
1025       u_vector_finish(&dri2_dpy->wl_modifiers.rgb565);
1026       if (dri2_dpy->own_device) {
1027          wl_display_disconnect(dri2_dpy->wl_dpy);
1028       }
1029       break;
1030 #endif
1031    default:
1032       break;
1033    }
1034
1035    /* The drm platform does not create the screen/driver_configs but reuses
1036     * the ones from the gbm device. As such the gbm itself is responsible
1037     * for the cleanup.
1038     */
1039    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1040       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1041          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1042       free(dri2_dpy->driver_configs);
1043    }
1044    free(dri2_dpy);
1045    disp->DriverData = NULL;
1046 }
1047
1048 __DRIbuffer *
1049 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1050                                     unsigned int att, unsigned int format)
1051 {
1052    struct dri2_egl_display *dri2_dpy =
1053       dri2_egl_display(dri2_surf->base.Resource.Display);
1054
1055    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1056       return NULL;
1057
1058    if (!dri2_surf->local_buffers[att]) {
1059       dri2_surf->local_buffers[att] =
1060          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1061                                         dri2_surf->base.Width, dri2_surf->base.Height);
1062    }
1063
1064    return dri2_surf->local_buffers[att];
1065 }
1066
1067 void
1068 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1069 {
1070    struct dri2_egl_display *dri2_dpy =
1071       dri2_egl_display(dri2_surf->base.Resource.Display);
1072
1073    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1074       if (dri2_surf->local_buffers[i]) {
1075          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1076                                        dri2_surf->local_buffers[i]);
1077          dri2_surf->local_buffers[i] = NULL;
1078       }
1079    }
1080 }
1081
1082 /**
1083  * Called via eglTerminate(), drv->API.Terminate().
1084  *
1085  * This must be guaranteed to be called exactly once, even if eglTerminate is
1086  * called many times (without a eglInitialize in between).
1087  */
1088 static EGLBoolean
1089 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1090 {
1091    /* Release all non-current Context/Surfaces. */
1092    _eglReleaseDisplayResources(drv, disp);
1093
1094    dri2_display_release(disp);
1095
1096    return EGL_TRUE;
1097 }
1098
1099 /**
1100  * Set the error code after a call to
1101  * dri2_egl_display::dri2::createContextAttribs.
1102  */
1103 static void
1104 dri2_create_context_attribs_error(int dri_error)
1105 {
1106    EGLint egl_error;
1107
1108    switch (dri_error) {
1109    case __DRI_CTX_ERROR_SUCCESS:
1110       return;
1111
1112    case __DRI_CTX_ERROR_NO_MEMORY:
1113       egl_error = EGL_BAD_ALLOC;
1114       break;
1115
1116   /* From the EGL_KHR_create_context spec, section "Errors":
1117    *
1118    *   * If <config> does not support a client API context compatible
1119    *     with the requested API major and minor version, [...] context flags,
1120    *     and context reset notification behavior (for client API types where
1121    *     these attributes are supported), then an EGL_BAD_MATCH error is
1122    *     generated.
1123    *
1124    *   * If an OpenGL ES context is requested and the values for
1125    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1126    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1127    *     is not defined, than an EGL_BAD_MATCH error is generated.
1128    *
1129    *   * If an OpenGL context is requested, the requested version is
1130    *     greater than 3.2, and the value for attribute
1131    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1132    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1133    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1134    *     one of these bits set; or if the implementation does not support
1135    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1136    */
1137    case __DRI_CTX_ERROR_BAD_API:
1138    case __DRI_CTX_ERROR_BAD_VERSION:
1139    case __DRI_CTX_ERROR_BAD_FLAG:
1140       egl_error = EGL_BAD_MATCH;
1141       break;
1142
1143   /* From the EGL_KHR_create_context spec, section "Errors":
1144    *
1145    *   * If an attribute name or attribute value in <attrib_list> is not
1146    *     recognized (including unrecognized bits in bitmask attributes),
1147    *     then an EGL_BAD_ATTRIBUTE error is generated."
1148    */
1149    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1150    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1151       egl_error = EGL_BAD_ATTRIBUTE;
1152       break;
1153
1154    default:
1155       assert(0);
1156       egl_error = EGL_BAD_MATCH;
1157       break;
1158    }
1159
1160    _eglError(egl_error, "dri2_create_context");
1161 }
1162
1163 static bool
1164 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1165                           struct dri2_egl_display *dri2_dpy,
1166                           uint32_t *ctx_attribs,
1167                           unsigned *num_attribs)
1168 {
1169    int pos = 0;
1170
1171    assert(*num_attribs >= NUM_ATTRIBS);
1172
1173    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1174    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1175    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1176    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1177
1178    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1179       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1180        * extension, don't even try to send it the robust-access flag.
1181        * It may explode.  Instead, generate the required EGL error here.
1182        */
1183       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1184             && !dri2_dpy->robustness) {
1185          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1186          return false;
1187       }
1188
1189       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1190       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1191          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1192    }
1193
1194    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1195       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1196        * extension, don't even try to send it a reset strategy.  It may
1197        * explode.  Instead, generate the required EGL error here.
1198        */
1199       if (!dri2_dpy->robustness) {
1200          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1201          return false;
1202       }
1203
1204       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1205       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1206    }
1207
1208    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1209       unsigned val;
1210
1211       switch (dri2_ctx->base.ContextPriority) {
1212       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1213          val = __DRI_CTX_PRIORITY_HIGH;
1214          break;
1215       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1216          val = __DRI_CTX_PRIORITY_MEDIUM;
1217          break;
1218       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1219          val = __DRI_CTX_PRIORITY_LOW;
1220          break;
1221       default:
1222          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1223          return false;
1224       }
1225
1226       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1227       ctx_attribs[pos++] = val;
1228    }
1229
1230    *num_attribs = pos;
1231
1232    return true;
1233 }
1234
1235 /**
1236  * Called via eglCreateContext(), drv->API.CreateContext().
1237  */
1238 static _EGLContext *
1239 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1240                     _EGLContext *share_list, const EGLint *attrib_list)
1241 {
1242    struct dri2_egl_context *dri2_ctx;
1243    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1244    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1245    __DRIcontext *shared =
1246       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1247    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1248    const __DRIconfig *dri_config;
1249    int api;
1250    unsigned error;
1251    unsigned num_attribs = NUM_ATTRIBS;
1252    uint32_t ctx_attribs[NUM_ATTRIBS];
1253
1254    (void) drv;
1255
1256    dri2_ctx = malloc(sizeof *dri2_ctx);
1257    if (!dri2_ctx) {
1258       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1259       return NULL;
1260    }
1261
1262    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1263       goto cleanup;
1264
1265    /* The EGL_EXT_create_context_robustness spec says:
1266     *
1267     *    "Add to the eglCreateContext context creation errors: [...]
1268     *
1269     *     * If the reset notification behavior of <share_context> and the
1270     *       newly created context are different then an EGL_BAD_MATCH error is
1271     *       generated."
1272     */
1273    if (share_list && share_list->ResetNotificationStrategy !=
1274                      dri2_ctx->base.ResetNotificationStrategy) {
1275       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1276       goto cleanup;
1277    }
1278
1279    /* The EGL_KHR_create_context_no_error spec says:
1280     *
1281     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1282     *    used to create <share_context> does not match the value of
1283     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1284     */
1285    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1286       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1287       goto cleanup;
1288    }
1289
1290    switch (dri2_ctx->base.ClientAPI) {
1291    case EGL_OPENGL_ES_API:
1292       switch (dri2_ctx->base.ClientMajorVersion) {
1293       case 1:
1294          api = __DRI_API_GLES;
1295          break;
1296       case 2:
1297          api = __DRI_API_GLES2;
1298          break;
1299       case 3:
1300          api = __DRI_API_GLES3;
1301          break;
1302       default:
1303          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1304          free(dri2_ctx);
1305          return NULL;
1306       }
1307       break;
1308    case EGL_OPENGL_API:
1309       if ((dri2_ctx->base.ClientMajorVersion >= 4
1310            || (dri2_ctx->base.ClientMajorVersion == 3
1311                && dri2_ctx->base.ClientMinorVersion >= 2))
1312           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1313          api = __DRI_API_OPENGL_CORE;
1314       else
1315          api = __DRI_API_OPENGL;
1316       break;
1317    default:
1318       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1319       free(dri2_ctx);
1320       return NULL;
1321    }
1322
1323    if (conf != NULL) {
1324       /* The config chosen here isn't necessarily
1325        * used for surfaces later.
1326        * A pixmap surface will use the single config.
1327        * This opportunity depends on disabling the
1328        * doubleBufferMode check in
1329        * src/mesa/main/context.c:check_compatible()
1330        */
1331       if (dri2_config->dri_config[1][0])
1332          dri_config = dri2_config->dri_config[1][0];
1333       else
1334          dri_config = dri2_config->dri_config[0][0];
1335
1336       /* EGL_WINDOW_BIT is set only when there is a double-buffered dri_config.
1337        * This makes sure the back buffer will always be used.
1338        */
1339       if (conf->SurfaceType & EGL_WINDOW_BIT)
1340          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
1341    }
1342    else
1343       dri_config = NULL;
1344
1345    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1346                                   &num_attribs))
1347       goto cleanup;
1348
1349    if (dri2_dpy->image_driver) {
1350       dri2_ctx->dri_context =
1351          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1352                                                       api,
1353                                                       dri_config,
1354                                                       shared,
1355                                                       num_attribs / 2,
1356                                                       ctx_attribs,
1357                                                       & error,
1358                                                       dri2_ctx);
1359       dri2_create_context_attribs_error(error);
1360    } else if (dri2_dpy->dri2) {
1361       if (dri2_dpy->dri2->base.version >= 3) {
1362          dri2_ctx->dri_context =
1363             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1364                                                  api,
1365                                                  dri_config,
1366                                                  shared,
1367                                                  num_attribs / 2,
1368                                                  ctx_attribs,
1369                                                  & error,
1370                                                  dri2_ctx);
1371          dri2_create_context_attribs_error(error);
1372       } else {
1373          dri2_ctx->dri_context =
1374             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1375                                                    api,
1376                                                    dri_config,
1377                                                    shared,
1378                                                    dri2_ctx);
1379       }
1380    } else {
1381       assert(dri2_dpy->swrast);
1382       if (dri2_dpy->swrast->base.version >= 3) {
1383          dri2_ctx->dri_context =
1384             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1385                                                    api,
1386                                                    dri_config,
1387                                                    shared,
1388                                                    num_attribs / 2,
1389                                                    ctx_attribs,
1390                                                    & error,
1391                                                    dri2_ctx);
1392          dri2_create_context_attribs_error(error);
1393       } else {
1394          dri2_ctx->dri_context =
1395             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1396                                                      api,
1397                                                      dri_config,
1398                                                      shared,
1399                                                      dri2_ctx);
1400       }
1401    }
1402
1403    if (!dri2_ctx->dri_context)
1404       goto cleanup;
1405
1406    return &dri2_ctx->base;
1407
1408  cleanup:
1409    free(dri2_ctx);
1410    return NULL;
1411 }
1412
1413 /**
1414  * Called via eglDestroyContext(), drv->API.DestroyContext().
1415  */
1416 static EGLBoolean
1417 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1418 {
1419    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1420    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1421
1422    if (_eglPutContext(ctx)) {
1423       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1424       free(dri2_ctx);
1425    }
1426
1427    return EGL_TRUE;
1428 }
1429
1430 EGLBoolean
1431 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
1432         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1433 {
1434    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1435    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1436
1437    dri2_surf->out_fence_fd = -1;
1438    dri2_surf->enable_out_fence = false;
1439    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1440        dri2_dpy->fence->get_capabilities &&
1441        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1442         __DRI_FENCE_CAP_NATIVE_FD)) {
1443       dri2_surf->enable_out_fence = enable_out_fence;
1444    }
1445
1446    return _eglInitSurface(surf, dpy, type, conf, attrib_list);
1447 }
1448
1449 static void
1450 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1451 {
1452    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1453
1454    if (dri2_surf->out_fence_fd >= 0)
1455       close(dri2_surf->out_fence_fd);
1456
1457    dri2_surf->out_fence_fd = fence_fd;
1458 }
1459
1460 void
1461 dri2_fini_surface(_EGLSurface *surf)
1462 {
1463    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1464
1465    dri2_surface_set_out_fence_fd(surf, -1);
1466    dri2_surf->enable_out_fence = false;
1467 }
1468
1469 static EGLBoolean
1470 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1471 {
1472    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1473
1474    if (!_eglPutSurface(surf))
1475       return EGL_TRUE;
1476
1477    return dri2_dpy->vtbl->destroy_surface(drv, dpy, surf);
1478 }
1479
1480 static void
1481 dri2_surf_update_fence_fd(_EGLContext *ctx,
1482                           _EGLDisplay *dpy, _EGLSurface *surf)
1483 {
1484    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1485    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1486    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1487    int fence_fd = -1;
1488    void *fence;
1489
1490    if (!dri2_surf->enable_out_fence)
1491       return;
1492
1493    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1494    if (fence) {
1495       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1496                                                fence);
1497       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1498    }
1499    dri2_surface_set_out_fence_fd(surf, fence_fd);
1500 }
1501
1502 /**
1503  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1504  */
1505 static EGLBoolean
1506 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1507                   _EGLSurface *rsurf, _EGLContext *ctx)
1508 {
1509    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1510    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1511    _EGLContext *old_ctx;
1512    _EGLSurface *old_dsurf, *old_rsurf;
1513    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1514    __DRIdrawable *ddraw, *rdraw;
1515    __DRIcontext *cctx;
1516    EGLBoolean unbind;
1517
1518    if (!dri2_dpy)
1519       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1520
1521    /* make new bindings */
1522    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1523       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1524       return EGL_FALSE;
1525    }
1526
1527    /* flush before context switch */
1528    if (old_ctx)
1529       dri2_gl_flush();
1530
1531    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1532    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1533    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1534
1535    if (old_ctx) {
1536       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1537
1538       if (old_dsurf)
1539          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1540       dri2_dpy->core->unbindContext(old_cctx);
1541    }
1542
1543    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1544
1545    if (unbind || dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1546       dri2_destroy_surface(drv, disp, old_dsurf);
1547       dri2_destroy_surface(drv, disp, old_rsurf);
1548
1549       if (!unbind)
1550          dri2_dpy->ref_count++;
1551       if (old_ctx) {
1552          EGLDisplay old_disp = _eglGetDisplayHandle(old_ctx->Resource.Display);
1553          dri2_destroy_context(drv, disp, old_ctx);
1554          dri2_display_release(old_disp);
1555       }
1556
1557       return EGL_TRUE;
1558    } else {
1559       /* undo the previous _eglBindContext */
1560       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1561       assert(&dri2_ctx->base == ctx &&
1562              tmp_dsurf == dsurf &&
1563              tmp_rsurf == rsurf);
1564
1565       _eglPutSurface(dsurf);
1566       _eglPutSurface(rsurf);
1567       _eglPutContext(ctx);
1568
1569       _eglPutSurface(old_dsurf);
1570       _eglPutSurface(old_rsurf);
1571       _eglPutContext(old_ctx);
1572
1573       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1574        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1575        * as EGL_SUCCESS.
1576        */
1577       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1578    }
1579 }
1580
1581 __DRIdrawable *
1582 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1583 {
1584    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1585
1586    return dri2_surf->dri_drawable;
1587 }
1588
1589 /*
1590  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1591  */
1592 static _EGLProc
1593 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1594 {
1595    return _glapi_get_proc_address(procname);
1596 }
1597
1598 static _EGLSurface*
1599 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1600                            _EGLConfig *conf, void *native_window,
1601                            const EGLint *attrib_list)
1602 {
1603    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1604    return dri2_dpy->vtbl->create_window_surface(drv, dpy, conf, native_window,
1605                                                 attrib_list);
1606 }
1607
1608 static _EGLSurface*
1609 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1610                            _EGLConfig *conf, void *native_pixmap,
1611                            const EGLint *attrib_list)
1612 {
1613    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1614    return dri2_dpy->vtbl->create_pixmap_surface(drv, dpy, conf, native_pixmap,
1615                                                 attrib_list);
1616 }
1617
1618 static _EGLSurface*
1619 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1620                            _EGLConfig *conf, const EGLint *attrib_list)
1621 {
1622    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1623    return dri2_dpy->vtbl->create_pbuffer_surface(drv, dpy, conf, attrib_list);
1624 }
1625
1626 static EGLBoolean
1627 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1628                    EGLint interval)
1629 {
1630    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1631    if (!dri2_dpy->vtbl->swap_interval)
1632       return EGL_TRUE;
1633    return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval);
1634 }
1635
1636 /**
1637  * Asks the client API to flush any rendering to the drawable so that we can
1638  * do our swapbuffers.
1639  */
1640 void
1641 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1642 {
1643    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1644    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1645
1646    if (dri2_dpy->flush) {
1647       if (dri2_dpy->flush->base.version >= 4) {
1648          /* We know there's a current context because:
1649           *
1650           *     "If surface is not bound to the calling thread’s current
1651           *      context, an EGL_BAD_SURFACE error is generated."
1652          */
1653          _EGLContext *ctx = _eglGetCurrentContext();
1654          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1655
1656          /* From the EGL 1.4 spec (page 52):
1657           *
1658           *     "The contents of ancillary buffers are always undefined
1659           *      after calling eglSwapBuffers."
1660           */
1661          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1662                                            dri_drawable,
1663                                            __DRI2_FLUSH_DRAWABLE |
1664                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1665                                            __DRI2_THROTTLE_SWAPBUFFER);
1666       } else {
1667          dri2_dpy->flush->flush(dri_drawable);
1668       }
1669    }
1670 }
1671
1672 static EGLBoolean
1673 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1674 {
1675    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1676    _EGLContext *ctx = _eglGetCurrentContext();
1677
1678    if (ctx && surf)
1679       dri2_surf_update_fence_fd(ctx, dpy, surf);
1680    return dri2_dpy->vtbl->swap_buffers(drv, dpy, surf);
1681 }
1682
1683 static EGLBoolean
1684 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *dpy,
1685                               _EGLSurface *surf,
1686                               const EGLint *rects, EGLint n_rects)
1687 {
1688    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1689    _EGLContext *ctx = _eglGetCurrentContext();
1690
1691    if (ctx && surf)
1692       dri2_surf_update_fence_fd(ctx, dpy, surf);
1693    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, dpy, surf,
1694                                                    rects, n_rects);
1695 }
1696
1697 static EGLBoolean
1698 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1699                          EGLint numRects, const EGLint *rects)
1700 {
1701    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1702    return dri2_dpy->vtbl->swap_buffers_region(drv, dpy, surf, numRects, rects);
1703 }
1704
1705 static EGLBoolean
1706 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1707                        EGLint *rects, EGLint n_rects)
1708 {
1709    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1710    return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
1711 }
1712
1713 static EGLBoolean
1714 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1715                      EGLint x, EGLint y, EGLint width, EGLint height)
1716 {
1717    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1718    return dri2_dpy->vtbl->post_sub_buffer(drv, dpy, surf, x, y, width, height);
1719 }
1720
1721 static EGLBoolean
1722 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1723                   void *native_pixmap_target)
1724 {
1725    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1726    return dri2_dpy->vtbl->copy_buffers(drv, dpy, surf, native_pixmap_target);
1727 }
1728
1729 static EGLint
1730 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1731 {
1732    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1733    return dri2_dpy->vtbl->query_buffer_age(drv, dpy, surf);
1734 }
1735
1736 static EGLBoolean
1737 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1738 {
1739    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1740    _EGLSurface *surf = ctx->DrawSurface;
1741    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1742
1743    (void) drv;
1744
1745    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1746     * we need to copy fake to real here.*/
1747
1748    if (dri2_dpy->flush != NULL)
1749       dri2_dpy->flush->flush(dri_drawable);
1750
1751    return EGL_TRUE;
1752 }
1753
1754 static EGLBoolean
1755 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1756 {
1757    (void) drv;
1758    (void) disp;
1759
1760    if (engine != EGL_CORE_NATIVE_ENGINE)
1761       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1762    /* glXWaitX(); */
1763
1764    return EGL_TRUE;
1765 }
1766
1767 static EGLBoolean
1768 dri2_bind_tex_image(_EGLDriver *drv,
1769                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1770 {
1771    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1772    struct dri2_egl_context *dri2_ctx;
1773    _EGLContext *ctx;
1774    GLint format, target;
1775    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1776
1777    ctx = _eglGetCurrentContext();
1778    dri2_ctx = dri2_egl_context(ctx);
1779
1780    if (!_eglBindTexImage(drv, disp, surf, buffer))
1781       return EGL_FALSE;
1782
1783    switch (surf->TextureFormat) {
1784    case EGL_TEXTURE_RGB:
1785       format = __DRI_TEXTURE_FORMAT_RGB;
1786       break;
1787    case EGL_TEXTURE_RGBA:
1788       format = __DRI_TEXTURE_FORMAT_RGBA;
1789       break;
1790    default:
1791       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1792       format = __DRI_TEXTURE_FORMAT_RGBA;
1793    }
1794
1795    switch (surf->TextureTarget) {
1796    case EGL_TEXTURE_2D:
1797       target = GL_TEXTURE_2D;
1798       break;
1799    default:
1800       target = GL_TEXTURE_2D;
1801       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1802    }
1803
1804    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1805                                        target, format,
1806                                        dri_drawable);
1807
1808    return EGL_TRUE;
1809 }
1810
1811 static EGLBoolean
1812 dri2_release_tex_image(_EGLDriver *drv,
1813                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1814 {
1815    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1816    struct dri2_egl_context *dri2_ctx;
1817    _EGLContext *ctx;
1818    GLint  target;
1819    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1820
1821    ctx = _eglGetCurrentContext();
1822    dri2_ctx = dri2_egl_context(ctx);
1823
1824    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1825       return EGL_FALSE;
1826
1827    switch (surf->TextureTarget) {
1828    case EGL_TEXTURE_2D:
1829       target = GL_TEXTURE_2D;
1830       break;
1831    default:
1832       assert(0);
1833    }
1834
1835    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1836        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1837       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1838                                              target, dri_drawable);
1839    }
1840
1841    return EGL_TRUE;
1842 }
1843
1844 static _EGLImage*
1845 dri2_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
1846                   EGLenum target, EGLClientBuffer buffer,
1847                   const EGLint *attr_list)
1848 {
1849    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1850    return dri2_dpy->vtbl->create_image(drv, dpy, ctx, target, buffer,
1851                                        attr_list);
1852 }
1853
1854 static _EGLImage *
1855 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1856 {
1857    struct dri2_egl_image *dri2_img;
1858
1859    if (dri_image == NULL) {
1860       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1861       return NULL;
1862    }
1863
1864    dri2_img = malloc(sizeof *dri2_img);
1865    if (!dri2_img) {
1866       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1867       return NULL;
1868    }
1869
1870    _eglInitImage(&dri2_img->base, disp);
1871
1872    dri2_img->dri_image = dri_image;
1873
1874    return &dri2_img->base;
1875 }
1876
1877 /**
1878  * Translate a DRI Image extension error code into an EGL error code.
1879  */
1880 static EGLint
1881 egl_error_from_dri_image_error(int dri_error)
1882 {
1883    switch (dri_error) {
1884    case __DRI_IMAGE_ERROR_SUCCESS:
1885       return EGL_SUCCESS;
1886    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1887       return EGL_BAD_ALLOC;
1888    case __DRI_IMAGE_ERROR_BAD_MATCH:
1889       return EGL_BAD_MATCH;
1890    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1891       return EGL_BAD_PARAMETER;
1892    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1893       return EGL_BAD_ACCESS;
1894    default:
1895       assert(0);
1896       return EGL_BAD_ALLOC;
1897    }
1898 }
1899
1900 static _EGLImage *
1901 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1902                                    EGLClientBuffer buffer,
1903                                    const EGLint *attr_list)
1904 {
1905    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1906    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1907    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1908    __DRIimage *dri_image;
1909
1910    if (renderbuffer == 0) {
1911       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1912       return EGL_NO_IMAGE_KHR;
1913    }
1914
1915    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1916       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1917       return EGL_NO_IMAGE_KHR;
1918    }
1919
1920    if (dri2_dpy->image->base.version >= 17 &&
1921        dri2_dpy->image->createImageFromRenderbuffer2) {
1922       unsigned error = ~0;
1923
1924       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1925                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1926
1927       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1928
1929       if (!dri_image) {
1930          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1931          return EGL_NO_IMAGE_KHR;
1932       }
1933    } else {
1934       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1935                dri2_ctx->dri_context, renderbuffer, NULL);
1936       if (!dri_image) {
1937          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1938          return EGL_NO_IMAGE_KHR;
1939       }
1940    }
1941
1942    return dri2_create_image_from_dri(disp, dri_image);
1943 }
1944
1945 #ifdef HAVE_WAYLAND_PLATFORM
1946
1947 /* This structure describes how a wl_buffer maps to one or more
1948  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1949  * offsets and strides of the planes in the buffer.  This table maps a
1950  * wl_drm format code to a description of the planes in the buffer
1951  * that lets us create a __DRIimage for each of the planes. */
1952
1953 static const struct wl_drm_components_descriptor {
1954    uint32_t dri_components;
1955    EGLint components;
1956    int nplanes;
1957 } wl_drm_components[] = {
1958    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1959    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1960    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1961    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1962    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1963 };
1964
1965 static _EGLImage *
1966 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1967                                     EGLClientBuffer _buffer,
1968                                     const EGLint *attr_list)
1969 {
1970    struct wl_drm_buffer *buffer;
1971    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1972    const struct wl_drm_components_descriptor *f;
1973    __DRIimage *dri_image;
1974    _EGLImageAttribs attrs;
1975    int32_t plane;
1976
1977    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1978                                    (struct wl_resource *) _buffer);
1979    if (!buffer)
1980        return NULL;
1981
1982    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1983       return NULL;
1984
1985    plane = attrs.PlaneWL;
1986    f = buffer->driver_format;
1987    if (plane < 0 || plane >= f->nplanes) {
1988       _eglError(EGL_BAD_PARAMETER,
1989                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1990       return NULL;
1991    }
1992
1993    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1994
1995    if (dri_image == NULL) {
1996       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1997       return NULL;
1998    }
1999
2000    return dri2_create_image_from_dri(disp, dri_image);
2001 }
2002 #endif
2003
2004 static EGLBoolean
2005 dri2_get_sync_values_chromium(_EGLDisplay *dpy, _EGLSurface *surf,
2006                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2007                               EGLuint64KHR *sbc)
2008 {
2009    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2010    return dri2_dpy->vtbl->get_sync_values(dpy, surf, ust, msc, sbc);
2011 }
2012
2013 /**
2014  * Set the error code after a call to
2015  * dri2_egl_image::dri_image::createImageFromTexture.
2016  */
2017 static void
2018 dri2_create_image_khr_texture_error(int dri_error)
2019 {
2020    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2021
2022    if (egl_error != EGL_SUCCESS)
2023       _eglError(egl_error, "dri2_create_image_khr_texture");
2024 }
2025
2026 static _EGLImage *
2027 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2028                                    EGLenum target,
2029                                    EGLClientBuffer buffer,
2030                                    const EGLint *attr_list)
2031 {
2032    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2033    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2034    struct dri2_egl_image *dri2_img;
2035    GLuint texture = (GLuint) (uintptr_t) buffer;
2036    _EGLImageAttribs attrs;
2037    GLuint depth;
2038    GLenum gl_target;
2039    unsigned error;
2040
2041    if (texture == 0) {
2042       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2043       return EGL_NO_IMAGE_KHR;
2044    }
2045
2046    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2047       return EGL_NO_IMAGE_KHR;
2048
2049    switch (target) {
2050    case EGL_GL_TEXTURE_2D_KHR:
2051       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2052          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2053          return EGL_NO_IMAGE_KHR;
2054       }
2055       depth = 0;
2056       gl_target = GL_TEXTURE_2D;
2057       break;
2058    case EGL_GL_TEXTURE_3D_KHR:
2059       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2060          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2061          return EGL_NO_IMAGE_KHR;
2062       }
2063
2064       depth = attrs.GLTextureZOffset;
2065       gl_target = GL_TEXTURE_3D;
2066       break;
2067    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2068    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2069    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2070    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2071    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2072    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2073       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2074          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2075          return EGL_NO_IMAGE_KHR;
2076       }
2077
2078       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2079       gl_target = GL_TEXTURE_CUBE_MAP;
2080       break;
2081    default:
2082       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2083       return EGL_NO_IMAGE_KHR;
2084    }
2085
2086    dri2_img = malloc(sizeof *dri2_img);
2087    if (!dri2_img) {
2088       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2089       return EGL_NO_IMAGE_KHR;
2090    }
2091
2092    _eglInitImage(&dri2_img->base, disp);
2093
2094    dri2_img->dri_image =
2095       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2096                                               gl_target,
2097                                               texture,
2098                                               depth,
2099                                               attrs.GLTextureLevel,
2100                                               &error,
2101                                               dri2_img);
2102    dri2_create_image_khr_texture_error(error);
2103
2104    if (!dri2_img->dri_image) {
2105       free(dri2_img);
2106       return EGL_NO_IMAGE_KHR;
2107    }
2108    return &dri2_img->base;
2109 }
2110
2111 static EGLBoolean
2112 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
2113                    EGLint attribute, EGLint *value)
2114 {
2115    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2116    if (!dri2_dpy->vtbl->query_surface)
2117       return _eglQuerySurface(drv, dpy, surf, attribute, value);
2118    return dri2_dpy->vtbl->query_surface(drv, dpy, surf, attribute, value);
2119 }
2120
2121 static struct wl_buffer*
2122 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *dpy,
2123                                       _EGLImage *img)
2124 {
2125    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2126    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, dpy, img);
2127 }
2128
2129 #ifdef HAVE_LIBDRM
2130 static _EGLImage *
2131 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2132                                   EGLClientBuffer buffer, const EGLint *attr_list)
2133 {
2134    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2135    EGLint format, name, pitch;
2136    _EGLImageAttribs attrs;
2137    __DRIimage *dri_image;
2138
2139    name = (EGLint) (uintptr_t) buffer;
2140
2141    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2142       return NULL;
2143
2144    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2145        attrs.DRMBufferStrideMESA <= 0) {
2146       _eglError(EGL_BAD_PARAMETER,
2147                 "bad width, height or stride");
2148       return NULL;
2149    }
2150
2151    switch (attrs.DRMBufferFormatMESA) {
2152    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2153       format = __DRI_IMAGE_FORMAT_ARGB8888;
2154       pitch = attrs.DRMBufferStrideMESA;
2155       break;
2156    default:
2157       _eglError(EGL_BAD_PARAMETER,
2158                 "dri2_create_image_khr: unsupported pixmap depth");
2159       return NULL;
2160    }
2161
2162    dri_image =
2163       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2164                                            attrs.Width,
2165                                            attrs.Height,
2166                                            format,
2167                                            name,
2168                                            pitch,
2169                                            NULL);
2170
2171    return dri2_create_image_from_dri(disp, dri_image);
2172 }
2173
2174 static EGLBoolean
2175 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2176 {
2177    /**
2178      * The spec says:
2179      *
2180      * "Required attributes and their values are as follows:
2181      *
2182      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2183      *
2184      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2185      *    by drm_fourcc.h and used as the pixel_format parameter of the
2186      *    drm_mode_fb_cmd2 ioctl."
2187      *
2188      * and
2189      *
2190      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2191      *    incomplete, EGL_BAD_PARAMETER is generated."
2192      */
2193    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2194        !attrs->DMABufFourCC.IsPresent)
2195       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2196
2197    /**
2198     * Also:
2199     *
2200     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2201     *  specified for a plane's pitch or offset isn't supported by EGL,
2202     *  EGL_BAD_ACCESS is generated."
2203     */
2204    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2205       if (attrs->DMABufPlanePitches[i].IsPresent &&
2206           attrs->DMABufPlanePitches[i].Value <= 0)
2207          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2208    }
2209
2210    /**
2211     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2212     * attribute values may be given.
2213     *
2214     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2215     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2216     */
2217    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2218       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2219           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2220          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2221    }
2222
2223    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2224     * mandate it, we only accept the same modifier across all planes. */
2225    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2226       if (attrs->DMABufPlaneFds[i].IsPresent) {
2227          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2228                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2229              (attrs->DMABufPlaneModifiersLo[0].Value !=
2230                attrs->DMABufPlaneModifiersLo[i].Value) ||
2231              (attrs->DMABufPlaneModifiersHi[0].Value !=
2232                attrs->DMABufPlaneModifiersHi[i].Value))
2233             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2234       }
2235    }
2236
2237    return EGL_TRUE;
2238 }
2239
2240 /* Returns the total number of file descriptors. Zero indicates an error. */
2241 static unsigned
2242 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2243 {
2244    unsigned plane_n;
2245
2246    switch (attrs->DMABufFourCC.Value) {
2247    case DRM_FORMAT_R8:
2248    case DRM_FORMAT_RG88:
2249    case DRM_FORMAT_GR88:
2250    case DRM_FORMAT_R16:
2251    case DRM_FORMAT_GR1616:
2252    case DRM_FORMAT_RGB332:
2253    case DRM_FORMAT_BGR233:
2254    case DRM_FORMAT_XRGB4444:
2255    case DRM_FORMAT_XBGR4444:
2256    case DRM_FORMAT_RGBX4444:
2257    case DRM_FORMAT_BGRX4444:
2258    case DRM_FORMAT_ARGB4444:
2259    case DRM_FORMAT_ABGR4444:
2260    case DRM_FORMAT_RGBA4444:
2261    case DRM_FORMAT_BGRA4444:
2262    case DRM_FORMAT_XRGB1555:
2263    case DRM_FORMAT_XBGR1555:
2264    case DRM_FORMAT_RGBX5551:
2265    case DRM_FORMAT_BGRX5551:
2266    case DRM_FORMAT_ARGB1555:
2267    case DRM_FORMAT_ABGR1555:
2268    case DRM_FORMAT_RGBA5551:
2269    case DRM_FORMAT_BGRA5551:
2270    case DRM_FORMAT_RGB565:
2271    case DRM_FORMAT_BGR565:
2272    case DRM_FORMAT_RGB888:
2273    case DRM_FORMAT_BGR888:
2274    case DRM_FORMAT_XRGB8888:
2275    case DRM_FORMAT_XBGR8888:
2276    case DRM_FORMAT_RGBX8888:
2277    case DRM_FORMAT_BGRX8888:
2278    case DRM_FORMAT_ARGB8888:
2279    case DRM_FORMAT_ABGR8888:
2280    case DRM_FORMAT_RGBA8888:
2281    case DRM_FORMAT_BGRA8888:
2282    case DRM_FORMAT_XRGB2101010:
2283    case DRM_FORMAT_XBGR2101010:
2284    case DRM_FORMAT_RGBX1010102:
2285    case DRM_FORMAT_BGRX1010102:
2286    case DRM_FORMAT_ARGB2101010:
2287    case DRM_FORMAT_ABGR2101010:
2288    case DRM_FORMAT_RGBA1010102:
2289    case DRM_FORMAT_BGRA1010102:
2290    case DRM_FORMAT_YUYV:
2291    case DRM_FORMAT_YVYU:
2292    case DRM_FORMAT_UYVY:
2293    case DRM_FORMAT_VYUY:
2294       plane_n = 1;
2295       break;
2296    case DRM_FORMAT_NV12:
2297    case DRM_FORMAT_NV21:
2298    case DRM_FORMAT_NV16:
2299    case DRM_FORMAT_NV61:
2300       plane_n = 2;
2301       break;
2302    case DRM_FORMAT_YUV410:
2303    case DRM_FORMAT_YVU410:
2304    case DRM_FORMAT_YUV411:
2305    case DRM_FORMAT_YVU411:
2306    case DRM_FORMAT_YUV420:
2307    case DRM_FORMAT_YVU420:
2308    case DRM_FORMAT_YUV422:
2309    case DRM_FORMAT_YVU422:
2310    case DRM_FORMAT_YUV444:
2311    case DRM_FORMAT_YVU444:
2312       plane_n = 3;
2313       break;
2314    default:
2315       _eglError(EGL_BAD_ATTRIBUTE, "invalid format");
2316       return 0;
2317    }
2318
2319    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2320       /**
2321        * The modifiers extension spec says:
2322        *
2323        * "Modifiers may modify any attribute of a buffer import, including
2324        *  but not limited to adding extra planes to a format which
2325        *  otherwise does not have those planes. As an example, a modifier
2326        *  may add a plane for an external compression buffer to a
2327        *  single-plane format. The exact meaning and effect of any
2328        *  modifier is canonically defined by drm_fourcc.h, not as part of
2329        *  this extension."
2330        */
2331       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2332           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2333          plane_n = i + 1;
2334       }
2335    }
2336
2337    /**
2338      * The spec says:
2339      *
2340      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2341      *    incomplete, EGL_BAD_PARAMETER is generated."
2342      */
2343    for (unsigned i = 0; i < plane_n; ++i) {
2344       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2345           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2346           !attrs->DMABufPlanePitches[i].IsPresent) {
2347          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2348          return 0;
2349       }
2350    }
2351
2352    /**
2353     * The spec also says:
2354     *
2355     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2356     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2357     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2358     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2359     */
2360    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2361       if (attrs->DMABufPlaneFds[i].IsPresent ||
2362           attrs->DMABufPlaneOffsets[i].IsPresent ||
2363           attrs->DMABufPlanePitches[i].IsPresent) {
2364          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2365          return 0;
2366       }
2367    }
2368
2369    return plane_n;
2370 }
2371
2372 static EGLBoolean
2373 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2374                             EGLint max, EGLint *formats, EGLint *count)
2375 {
2376    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2377    if (max < 0 || (max > 0 && formats == NULL))
2378       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2379
2380    if (dri2_dpy->image->base.version < 15 ||
2381        dri2_dpy->image->queryDmaBufFormats == NULL)
2382       return EGL_FALSE;
2383
2384    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2385                                             formats, count))
2386       return EGL_FALSE;
2387
2388    return EGL_TRUE;
2389 }
2390
2391 static EGLBoolean
2392 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2393                              EGLint max, EGLuint64KHR *modifiers,
2394                              EGLBoolean *external_only, EGLint *count)
2395 {
2396    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2397
2398    if (max < 0)
2399       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2400
2401    if (max > 0 && modifiers == NULL)
2402       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2403
2404    if (dri2_dpy->image->base.version < 15 ||
2405        dri2_dpy->image->queryDmaBufModifiers == NULL)
2406       return EGL_FALSE;
2407
2408    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2409                                              max, modifiers,
2410                                              (unsigned int *) external_only,
2411                                              count) == false)
2412       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2413
2414    return EGL_TRUE;
2415 }
2416
2417 /**
2418  * The spec says:
2419  *
2420  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2421  *  EGL will take a reference to the dma_buf(s) which it will release at any
2422  *  time while the EGLDisplay is initialized. It is the responsibility of the
2423  *  application to close the dma_buf file descriptors."
2424  *
2425  * Therefore we must never close or otherwise modify the file descriptors.
2426  */
2427 _EGLImage *
2428 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2429                           EGLClientBuffer buffer, const EGLint *attr_list)
2430 {
2431    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2432    _EGLImage *res;
2433    _EGLImageAttribs attrs;
2434    __DRIimage *dri_image;
2435    unsigned num_fds;
2436    int fds[DMA_BUF_MAX_PLANES];
2437    int pitches[DMA_BUF_MAX_PLANES];
2438    int offsets[DMA_BUF_MAX_PLANES];
2439    uint64_t modifier;
2440    bool has_modifier = false;
2441    unsigned error;
2442
2443    /**
2444     * The spec says:
2445     *
2446     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2447     *     error EGL_BAD_PARAMETER is generated."
2448     */
2449    if (buffer != NULL) {
2450       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2451       return NULL;
2452    }
2453
2454    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2455       return NULL;
2456
2457    if (!dri2_check_dma_buf_attribs(&attrs))
2458       return NULL;
2459
2460    num_fds = dri2_check_dma_buf_format(&attrs);
2461    if (!num_fds)
2462       return NULL;
2463
2464    for (unsigned i = 0; i < num_fds; ++i) {
2465       fds[i] = attrs.DMABufPlaneFds[i].Value;
2466       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2467       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2468    }
2469
2470    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2471     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2472     * attrs.DMABufPlaneModifiersHi[0] */
2473    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2474       modifier = (uint64_t) attrs.DMABufPlaneModifiersHi[0].Value << 32;
2475       modifier |= (uint64_t) (attrs.DMABufPlaneModifiersLo[0].Value & 0xffffffff);
2476       has_modifier = true;
2477    }
2478
2479    if (has_modifier) {
2480       if (dri2_dpy->image->base.version < 15 ||
2481           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2482          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2483          return EGL_NO_IMAGE_KHR;
2484       }
2485       dri_image =
2486          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2487             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2488             modifier, fds, num_fds, pitches, offsets,
2489             attrs.DMABufYuvColorSpaceHint.Value,
2490             attrs.DMABufSampleRangeHint.Value,
2491             attrs.DMABufChromaHorizontalSiting.Value,
2492             attrs.DMABufChromaVerticalSiting.Value,
2493             &error,
2494             NULL);
2495    }
2496    else {
2497       dri_image =
2498          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2499             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2500             fds, num_fds, pitches, offsets,
2501             attrs.DMABufYuvColorSpaceHint.Value,
2502             attrs.DMABufSampleRangeHint.Value,
2503             attrs.DMABufChromaHorizontalSiting.Value,
2504             attrs.DMABufChromaVerticalSiting.Value,
2505             &error,
2506             NULL);
2507    }
2508    dri2_create_image_khr_texture_error(error);
2509
2510    if (!dri_image)
2511       return EGL_NO_IMAGE_KHR;
2512
2513    res = dri2_create_image_from_dri(disp, dri_image);
2514
2515    return res;
2516 }
2517 static _EGLImage *
2518 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2519                            const EGLint *attr_list)
2520 {
2521    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2522    struct dri2_egl_image *dri2_img;
2523    _EGLImageAttribs attrs;
2524    unsigned int dri_use, valid_mask;
2525    int format;
2526
2527    (void) drv;
2528
2529    if (!attr_list) {
2530       _eglError(EGL_BAD_PARAMETER, __func__);
2531       return EGL_NO_IMAGE_KHR;
2532    }
2533
2534    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2535       return EGL_NO_IMAGE_KHR;
2536
2537    if (attrs.Width <= 0 || attrs.Height <= 0) {
2538       _eglError(EGL_BAD_PARAMETER, __func__);
2539       return EGL_NO_IMAGE_KHR;
2540    }
2541
2542    switch (attrs.DRMBufferFormatMESA) {
2543    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2544       format = __DRI_IMAGE_FORMAT_ARGB8888;
2545       break;
2546    default:
2547       _eglError(EGL_BAD_PARAMETER, __func__);
2548       return EGL_NO_IMAGE_KHR;
2549    }
2550
2551    valid_mask =
2552       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2553       EGL_DRM_BUFFER_USE_SHARE_MESA |
2554       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2555    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2556       _eglError(EGL_BAD_PARAMETER, __func__);
2557       return EGL_NO_IMAGE_KHR;
2558    }
2559
2560    dri_use = 0;
2561    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2562       dri_use |= __DRI_IMAGE_USE_SHARE;
2563    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2564       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2565    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2566       dri_use |= __DRI_IMAGE_USE_CURSOR;
2567
2568    dri2_img = malloc(sizeof *dri2_img);
2569    if (!dri2_img) {
2570       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2571       return EGL_NO_IMAGE_KHR;
2572    }
2573
2574    _eglInitImage(&dri2_img->base, disp);
2575
2576    dri2_img->dri_image =
2577       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2578                                    attrs.Width, attrs.Height,
2579                                    format, dri_use, dri2_img);
2580    if (dri2_img->dri_image == NULL) {
2581       free(dri2_img);
2582        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2583       return EGL_NO_IMAGE_KHR;
2584    }
2585
2586    return &dri2_img->base;
2587 }
2588
2589 static EGLBoolean
2590 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2591                           EGLint *name, EGLint *handle, EGLint *stride)
2592 {
2593    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2594    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2595
2596    (void) drv;
2597
2598    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2599                                             __DRI_IMAGE_ATTRIB_NAME, name))
2600       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2601
2602    if (handle)
2603       dri2_dpy->image->queryImage(dri2_img->dri_image,
2604                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2605
2606    if (stride)
2607       dri2_dpy->image->queryImage(dri2_img->dri_image,
2608                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2609
2610    return EGL_TRUE;
2611 }
2612
2613 static EGLBoolean
2614 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2615                                      _EGLImage *img,
2616                                      EGLint *fourcc, EGLint *nplanes,
2617                                      EGLuint64KHR *modifiers)
2618 {
2619    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2620    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2621
2622    (void) drv;
2623
2624
2625    if (nplanes)
2626       dri2_dpy->image->queryImage(dri2_img->dri_image,
2627                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2628    if (fourcc)
2629       dri2_dpy->image->queryImage(dri2_img->dri_image,
2630                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2631
2632    if (modifiers)
2633       *modifiers = 0;
2634
2635    return EGL_TRUE;
2636 }
2637
2638 static EGLBoolean
2639 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2640                                int *fds, EGLint *strides, EGLint *offsets)
2641 {
2642    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2643    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2644
2645    (void) drv;
2646
2647    /* rework later to provide multiple fds/strides/offsets */
2648    if (fds)
2649       dri2_dpy->image->queryImage(dri2_img->dri_image,
2650                                   __DRI_IMAGE_ATTRIB_FD, fds);
2651
2652    if (strides)
2653       dri2_dpy->image->queryImage(dri2_img->dri_image,
2654                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2655
2656    if (offsets) {
2657       int img_offset;
2658       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2659                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2660       if (ret)
2661          offsets[0] = img_offset;
2662       else
2663          offsets[0] = 0;
2664    }
2665
2666    return EGL_TRUE;
2667 }
2668
2669 #endif
2670
2671 _EGLImage *
2672 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2673                       _EGLContext *ctx, EGLenum target,
2674                       EGLClientBuffer buffer, const EGLint *attr_list)
2675 {
2676    (void) drv;
2677
2678    switch (target) {
2679    case EGL_GL_TEXTURE_2D_KHR:
2680    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2681    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2682    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2683    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2684    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2685    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2686    case EGL_GL_TEXTURE_3D_KHR:
2687       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2688    case EGL_GL_RENDERBUFFER_KHR:
2689       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2690 #ifdef HAVE_LIBDRM
2691    case EGL_DRM_BUFFER_MESA:
2692       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2693    case EGL_LINUX_DMA_BUF_EXT:
2694       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2695 #endif
2696 #ifdef HAVE_WAYLAND_PLATFORM
2697    case EGL_WAYLAND_BUFFER_WL:
2698       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2699 #endif
2700    default:
2701       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2702       return EGL_NO_IMAGE_KHR;
2703    }
2704 }
2705
2706 static EGLBoolean
2707 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2708 {
2709    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2710    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2711
2712    (void) drv;
2713
2714    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2715    free(dri2_img);
2716
2717    return EGL_TRUE;
2718 }
2719
2720 #ifdef HAVE_WAYLAND_PLATFORM
2721
2722 static void
2723 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2724                          struct wl_drm_buffer *buffer)
2725 {
2726    _EGLDisplay *disp = user_data;
2727    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2728    __DRIimage *img;
2729    int dri_components = 0;
2730
2731    if (fd == -1)
2732       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2733                                                   buffer->width,
2734                                                   buffer->height,
2735                                                   buffer->format,
2736                                                   (int*)&name, 1,
2737                                                   buffer->stride,
2738                                                   buffer->offset,
2739                                                   NULL);
2740    else
2741       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2742                                                 buffer->width,
2743                                                 buffer->height,
2744                                                 buffer->format,
2745                                                 &fd, 1,
2746                                                 buffer->stride,
2747                                                 buffer->offset,
2748                                                 NULL);
2749
2750    if (img == NULL)
2751       return;
2752
2753    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2754
2755    buffer->driver_format = NULL;
2756    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2757       if (wl_drm_components[i].dri_components == dri_components)
2758          buffer->driver_format = &wl_drm_components[i];
2759
2760    if (buffer->driver_format == NULL)
2761       dri2_dpy->image->destroyImage(img);
2762    else
2763       buffer->driver_buffer = img;
2764 }
2765
2766 static void
2767 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2768 {
2769    _EGLDisplay *disp = user_data;
2770    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2771
2772    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2773 }
2774
2775 static EGLBoolean
2776 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2777                              struct wl_display *wl_dpy)
2778 {
2779    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2780    const struct wayland_drm_callbacks wl_drm_callbacks = {
2781       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2782       .reference_buffer = dri2_wl_reference_buffer,
2783       .release_buffer = dri2_wl_release_buffer
2784    };
2785    int flags = 0;
2786    uint64_t cap;
2787
2788    (void) drv;
2789
2790    if (dri2_dpy->wl_server_drm)
2791            return EGL_FALSE;
2792
2793    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2794        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2795        dri2_dpy->image->base.version >= 7 &&
2796        dri2_dpy->image->createImageFromFds != NULL)
2797       flags |= WAYLAND_DRM_PRIME;
2798
2799    dri2_dpy->wl_server_drm =
2800            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2801                             &wl_drm_callbacks, disp, flags);
2802
2803    if (!dri2_dpy->wl_server_drm)
2804            return EGL_FALSE;
2805
2806 #ifdef HAVE_DRM_PLATFORM
2807    /* We have to share the wl_drm instance with gbm, so gbm can convert
2808     * wl_buffers to gbm bos. */
2809    if (dri2_dpy->gbm_dri)
2810       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2811 #endif
2812
2813    return EGL_TRUE;
2814 }
2815
2816 static EGLBoolean
2817 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2818                                struct wl_display *wl_dpy)
2819 {
2820    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2821
2822    (void) drv;
2823
2824    if (!dri2_dpy->wl_server_drm)
2825            return EGL_FALSE;
2826
2827    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2828    dri2_dpy->wl_server_drm = NULL;
2829
2830    return EGL_TRUE;
2831 }
2832
2833 static EGLBoolean
2834 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2835                              struct wl_resource *buffer_resource,
2836                              EGLint attribute, EGLint *value)
2837 {
2838    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2839    struct wl_drm_buffer *buffer;
2840    const struct wl_drm_components_descriptor *format;
2841
2842    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2843    if (!buffer)
2844       return EGL_FALSE;
2845
2846    format = buffer->driver_format;
2847    switch (attribute) {
2848    case EGL_TEXTURE_FORMAT:
2849       *value = format->components;
2850       return EGL_TRUE;
2851    case EGL_WIDTH:
2852       *value = buffer->width;
2853       return EGL_TRUE;
2854    case EGL_HEIGHT:
2855       *value = buffer->height;
2856       return EGL_TRUE;
2857    }
2858
2859    return EGL_FALSE;
2860 }
2861 #endif
2862
2863 static void
2864 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2865 {
2866    p_atomic_inc(&sync->refcount);
2867 }
2868
2869 static void
2870 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2871                     struct dri2_egl_sync *dri2_sync)
2872 {
2873    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2874       switch (dri2_sync->base.Type) {
2875       case EGL_SYNC_REUSABLE_KHR:
2876          cnd_destroy(&dri2_sync->cond);
2877          break;
2878       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2879          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2880             close(dri2_sync->base.SyncFd);
2881          break;
2882       default:
2883          break;
2884       }
2885
2886       if (dri2_sync->fence)
2887          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2888
2889       free(dri2_sync);
2890    }
2891 }
2892
2893 static _EGLSync *
2894 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
2895                  EGLenum type, const EGLAttrib *attrib_list)
2896 {
2897    _EGLContext *ctx = _eglGetCurrentContext();
2898    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2899    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2900    struct dri2_egl_sync *dri2_sync;
2901    EGLint ret;
2902    pthread_condattr_t attr;
2903
2904    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2905    if (!dri2_sync) {
2906       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2907       return NULL;
2908    }
2909
2910    if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
2911       free(dri2_sync);
2912       return NULL;
2913    }
2914
2915    switch (type) {
2916    case EGL_SYNC_FENCE_KHR:
2917       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2918       if (!dri2_sync->fence) {
2919          /* Why did it fail? DRI doesn't return an error code, so we emit
2920           * a generic EGL error that doesn't communicate user error.
2921           */
2922          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2923          free(dri2_sync);
2924          return NULL;
2925       }
2926       break;
2927
2928    case EGL_SYNC_CL_EVENT_KHR:
2929       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2930                                  dri2_dpy->dri_screen,
2931                                  dri2_sync->base.CLEvent);
2932       /* this can only happen if the cl_event passed in is invalid. */
2933       if (!dri2_sync->fence) {
2934          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2935          free(dri2_sync);
2936          return NULL;
2937       }
2938
2939       /* the initial status must be "signaled" if the cl_event is signaled */
2940       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2941                                             dri2_sync->fence, 0, 0))
2942          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2943       break;
2944
2945    case EGL_SYNC_REUSABLE_KHR:
2946       /* intialize attr */
2947       ret = pthread_condattr_init(&attr);
2948
2949       if (ret) {
2950          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2951          free(dri2_sync);
2952          return NULL;
2953       }
2954
2955       /* change clock attribute to CLOCK_MONOTONIC */
2956       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2957
2958       if (ret) {
2959          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2960          free(dri2_sync);
2961          return NULL;
2962       }
2963
2964       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2965
2966       if (ret) {
2967          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2968          free(dri2_sync);
2969          return NULL;
2970       }
2971
2972       /* initial status of reusable sync must be "unsignaled" */
2973       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2974       break;
2975
2976    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2977       if (dri2_dpy->fence->create_fence_fd) {
2978          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2979                                     dri2_ctx->dri_context,
2980                                     dri2_sync->base.SyncFd);
2981       }
2982       if (!dri2_sync->fence) {
2983          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2984          free(dri2_sync);
2985          return NULL;
2986       }
2987       break;
2988    }
2989
2990    p_atomic_set(&dri2_sync->refcount, 1);
2991    return &dri2_sync->base;
2992 }
2993
2994 static EGLBoolean
2995 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
2996 {
2997    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2998    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
2999    EGLint ret = EGL_TRUE;
3000    EGLint err;
3001
3002    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3003     * then unlock all threads possibly blocked by the reusable sync before
3004     * destroying it.
3005     */
3006    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3007        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3008       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3009       /* unblock all threads currently blocked by sync */
3010       err = cnd_broadcast(&dri2_sync->cond);
3011
3012       if (err) {
3013          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3014          ret = EGL_FALSE;
3015       }
3016    }
3017
3018    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3019
3020    return ret;
3021 }
3022
3023 static EGLint
3024 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3025 {
3026    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3027    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3028
3029    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3030
3031    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3032       /* try to retrieve the actual native fence fd.. if rendering is
3033        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3034        */
3035       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3036                                                    dri2_sync->fence);
3037    }
3038
3039    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3040       /* if native fence fd still not created, return an error: */
3041       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3042       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3043    }
3044
3045    return dup(sync->SyncFd);
3046 }
3047
3048 static EGLint
3049 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3050                       EGLint flags, EGLTime timeout)
3051 {
3052    _EGLContext *ctx = _eglGetCurrentContext();
3053    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3054    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3055    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3056    unsigned wait_flags = 0;
3057
3058    /* timespecs for cnd_timedwait */
3059    struct timespec current;
3060    xtime expire;
3061
3062    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3063
3064    /* The EGL_KHR_fence_sync spec states:
3065     *
3066     *    "If no context is current for the bound API,
3067     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3068     */
3069    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3070       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3071
3072    /* the sync object should take a reference while waiting */
3073    dri2_egl_ref_sync(dri2_sync);
3074
3075    switch (sync->Type) {
3076    case EGL_SYNC_FENCE_KHR:
3077    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3078    case EGL_SYNC_CL_EVENT_KHR:
3079       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3080                                          dri2_sync->fence, wait_flags,
3081                                          timeout))
3082          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3083       else
3084          ret = EGL_TIMEOUT_EXPIRED_KHR;
3085       break;
3086
3087    case EGL_SYNC_REUSABLE_KHR:
3088       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3089           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3090          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3091          dri2_gl_flush();
3092       }
3093
3094       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3095       if (timeout == EGL_FOREVER_KHR) {
3096          mtx_lock(&dri2_sync->mutex);
3097          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3098          mtx_unlock(&dri2_sync->mutex);
3099       } else {
3100          /* if reusable sync has not been yet signaled */
3101          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3102             clock_gettime(CLOCK_MONOTONIC, &current);
3103
3104             /* calculating when to expire */
3105             expire.nsec = timeout % 1000000000L;
3106             expire.sec = timeout / 1000000000L;
3107
3108             expire.nsec += current.tv_nsec;
3109             expire.sec += current.tv_sec;
3110
3111             /* expire.nsec now is a number between 0 and 1999999998 */
3112             if (expire.nsec > 999999999L) {
3113                expire.sec++;
3114                expire.nsec -= 1000000000L;
3115             }
3116
3117             mtx_lock(&dri2_sync->mutex);
3118             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3119             mtx_unlock(&dri2_sync->mutex);
3120
3121             if (ret == thrd_busy) {
3122                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3123                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3124                } else {
3125                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3126                   ret = EGL_FALSE;
3127                }
3128             }
3129          }
3130       }
3131       break;
3132   }
3133   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3134
3135   return ret;
3136 }
3137
3138 static EGLBoolean
3139 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3140                       EGLenum mode)
3141 {
3142    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3143    EGLint ret;
3144
3145    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3146       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3147
3148    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3149       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3150
3151    dri2_sync->base.SyncStatus = mode;
3152
3153    if (mode == EGL_SIGNALED_KHR) {
3154       ret = cnd_broadcast(&dri2_sync->cond);
3155
3156       /* fail to broadcast */
3157       if (ret)
3158          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3159    }
3160
3161    return EGL_TRUE;
3162 }
3163
3164 static EGLint
3165 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3166 {
3167    _EGLContext *ctx = _eglGetCurrentContext();
3168    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3169    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3170    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3171
3172    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3173                                      dri2_sync->fence, 0);
3174    return EGL_TRUE;
3175 }
3176
3177 static int
3178 dri2_interop_query_device_info(_EGLDisplay *dpy, _EGLContext *ctx,
3179                                struct mesa_glinterop_device_info *out)
3180 {
3181    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3182    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3183
3184    if (!dri2_dpy->interop)
3185       return MESA_GLINTEROP_UNSUPPORTED;
3186
3187    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3188 }
3189
3190 static int
3191 dri2_interop_export_object(_EGLDisplay *dpy, _EGLContext *ctx,
3192                            struct mesa_glinterop_export_in *in,
3193                            struct mesa_glinterop_export_out *out)
3194 {
3195    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3196    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3197
3198    if (!dri2_dpy->interop)
3199       return MESA_GLINTEROP_UNSUPPORTED;
3200
3201    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3202 }
3203
3204 /**
3205  * This is the main entrypoint into the driver, called by libEGL.
3206  * Create a new _EGLDriver object and init its dispatch table.
3207  */
3208 _EGLDriver *
3209 _eglBuiltInDriver(void)
3210 {
3211    _EGLDriver *dri2_drv = calloc(1, sizeof *dri2_drv);
3212    if (!dri2_drv)
3213       return NULL;
3214
3215    _eglInitDriverFallbacks(dri2_drv);
3216    dri2_drv->API.Initialize = dri2_initialize;
3217    dri2_drv->API.Terminate = dri2_terminate;
3218    dri2_drv->API.CreateContext = dri2_create_context;
3219    dri2_drv->API.DestroyContext = dri2_destroy_context;
3220    dri2_drv->API.MakeCurrent = dri2_make_current;
3221    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3222    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3223    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3224    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3225    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3226    dri2_drv->API.WaitClient = dri2_wait_client;
3227    dri2_drv->API.WaitNative = dri2_wait_native;
3228    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3229    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3230    dri2_drv->API.SwapInterval = dri2_swap_interval;
3231    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3232    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3233    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3234    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3235    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3236    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3237    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3238    dri2_drv->API.CreateImageKHR = dri2_create_image;
3239    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3240    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3241    dri2_drv->API.QuerySurface = dri2_query_surface;
3242 #ifdef HAVE_LIBDRM
3243    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3244    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3245    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3246    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3247    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3248    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3249 #endif
3250 #ifdef HAVE_WAYLAND_PLATFORM
3251    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3252    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3253    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3254 #endif
3255    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3256    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3257    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3258    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3259    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3260    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3261    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3262    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3263    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3264
3265    dri2_drv->Name = "DRI2";
3266
3267    return dri2_drv;
3268 }