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-client.h>
  52 #include "wayland-drm.h"
  53 #include "wayland-drm-client-protocol.h"
  54 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  55 #endif
  56
  57 #ifdef HAVE_X11_PLATFORM
  58 #include "X11/Xlibint.h"
  59 #endif
  60
  61 #include "egl_dri2.h"
  62 #include "GL/mesa_glinterop.h"
  63 #include "loader/loader.h"
  64 #include "util/u_atomic.h"
  65 #include "util/u_vector.h"
  66 #include "mapi/glapi/glapi.h"
  67
  68 /* The kernel header drm_fourcc.h defines the DRM formats below.  We duplicate
  69  * some of the definitions here so that building Mesa won't bleeding-edge
  70  * kernel headers.
  71  */
  72 #ifndef DRM_FORMAT_R8
  73 #define DRM_FORMAT_R8            fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
  74 #endif
  75
  76 #ifndef DRM_FORMAT_RG88
  77 #define DRM_FORMAT_RG88          fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
  78 #endif
  79
  80 #ifndef DRM_FORMAT_GR88
  81 #define DRM_FORMAT_GR88          fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
  82 #endif
  83
  84 #ifndef DRM_FORMAT_R16
  85 #define DRM_FORMAT_R16           fourcc_code('R', '1', '6', ' ') /* [15:0] R 16 little endian */
  86 #endif
  87
  88 #ifndef DRM_FORMAT_GR1616
  89 #define DRM_FORMAT_GR1616        fourcc_code('G', 'R', '3', '2') /* [31:0] R:G 16:16 little endian */
  90 #endif
  91
  92 #ifndef DRM_FORMAT_MOD_INVALID
  93 #define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
  94 #endif
  95
  96 #define NUM_ATTRIBS 12
  97
  98 static void
  99 dri_set_background_context(void *loaderPrivate)
 100 {
 101    _EGLContext *ctx = _eglGetCurrentContext();
 102    _EGLThreadInfo *t = _eglGetCurrentThread();
 103
 104    _eglBindContextToThread(ctx, t);
 105 }
 106
 107 static void
 108 dri2_gl_flush()
 109 {
 110    static void (*glFlush)(void);
 111    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 112
 113    mtx_lock(&glFlushMutex);
 114    if (!glFlush)
 115       glFlush = _glapi_get_proc_address("glFlush");
 116    mtx_unlock(&glFlushMutex);
 117
 118    /* if glFlush is not available things are horribly broken */
 119    if (!glFlush) {
 120       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 121       return;
 122    }
 123
 124    glFlush();
 125 }
 126
 127 static GLboolean
 128 dri_is_thread_safe(void *loaderPrivate)
 129 {
 130    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 131    _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 132
 133 #ifdef HAVE_X11_PLATFORM
 134    Display *xdpy = (Display*)display->PlatformDisplay;
 135
 136    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 137     * platform
 138     *
 139     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 140     * It wll be NULL if XInitThreads wasn't called.
 141     */
 142    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 143       return false;
 144 #endif
 145
 146 #ifdef HAVE_WAYLAND_PLATFORM
 147    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 148       return true;
 149 #endif
 150
 151    return true;
 152 }
 153
 154 const __DRIbackgroundCallableExtension background_callable_extension = {
 155    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 156
 157    .setBackgroundContext = dri_set_background_context,
 158    .isThreadSafe         = dri_is_thread_safe,
 159 };
 160
 161 const __DRIuseInvalidateExtension use_invalidate = {
 162    .base = { __DRI_USE_INVALIDATE, 1 }
 163 };
 164
 165 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 166    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 167    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 168    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,
 169    [__DRI_ATTRIB_GREEN_SIZE]            = EGL_GREEN_SIZE,
 170    [__DRI_ATTRIB_BLUE_SIZE]             = EGL_BLUE_SIZE,
 171    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 172    [__DRI_ATTRIB_ALPHA_SIZE]            = EGL_ALPHA_SIZE,
 173    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 174    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 175    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 176    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 177    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 178    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 179    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 180    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 181    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 182    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 183 };
 184
 185 const __DRIconfig *
 186 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 187                     EGLenum colorspace)
 188 {
 189    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 190    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 191
 192    return conf->dri_config[double_buffer][srgb];
 193 }
 194
 195 static EGLBoolean
 196 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 197 {
 198    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 199       return EGL_FALSE;
 200
 201    if (!_eglMatchConfig(conf, criteria))
 202       return EGL_FALSE;
 203
 204    return EGL_TRUE;
 205 }
 206
 207 struct dri2_egl_config *
 208 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 209                 EGLint surface_type, const EGLint *attr_list,
 210                 const unsigned int *rgba_masks)
 211 {
 212    struct dri2_egl_config *conf;
 213    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 214    _EGLConfig base;
 215    unsigned int attrib, value, double_buffer;
 216    bool srgb = false;
 217    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 218    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 219    _EGLConfig *matching_config;
 220    EGLint num_configs = 0;
 221    EGLint config_id;
 222
 223    _eglInitConfig(&base, disp, id);
 224
 225    double_buffer = 0;
 226    bind_to_texture_rgb = 0;
 227    bind_to_texture_rgba = 0;
 228
 229    for (int i = 0; dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib,
 230                                                      &value); ++i) {
 231       switch (attrib) {
 232       case __DRI_ATTRIB_RENDER_TYPE:
 233          if (value & __DRI_ATTRIB_RGBA_BIT)
 234             value = EGL_RGB_BUFFER;
 235          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 236             value = EGL_LUMINANCE_BUFFER;
 237          else
 238             return NULL;
 239          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 240          break;
 241
 242       case __DRI_ATTRIB_CONFIG_CAVEAT:
 243          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 244             value = EGL_NON_CONFORMANT_CONFIG;
 245          else if (value & __DRI_ATTRIB_SLOW_BIT)
 246             value = EGL_SLOW_CONFIG;
 247          else
 248             value = EGL_NONE;
 249          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 250          break;
 251
 252       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 253          bind_to_texture_rgb = value;
 254          break;
 255
 256       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 257          bind_to_texture_rgba = value;
 258          break;
 259
 260       case __DRI_ATTRIB_DOUBLE_BUFFER:
 261          double_buffer = value;
 262          break;
 263
 264       case __DRI_ATTRIB_RED_MASK:
 265          dri_masks[0] = value;
 266          break;
 267
 268       case __DRI_ATTRIB_GREEN_MASK:
 269          dri_masks[1] = value;
 270          break;
 271
 272       case __DRI_ATTRIB_BLUE_MASK:
 273          dri_masks[2] = value;
 274          break;
 275
 276       case __DRI_ATTRIB_ALPHA_MASK:
 277          dri_masks[3] = value;
 278          break;
 279
 280       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 281       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 282       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 283       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 284          /* Don't expose visuals with the accumulation buffer. */
 285          if (value > 0)
 286             return NULL;
 287          break;
 288
 289       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 290          srgb = value != 0;
 291          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 292             return NULL;
 293          break;
 294
 295       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 296          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 297                           _EGL_MAX_PBUFFER_WIDTH);
 298          break;
 299       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 300          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 301                           _EGL_MAX_PBUFFER_HEIGHT);
 302          break;
 303
 304       default:
 305          key = dri2_to_egl_attribute_map[attrib];
 306          if (key != 0)
 307             _eglSetConfigKey(&base, key, value);
 308          break;
 309       }
 310    }
 311
 312    if (attr_list)
 313       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 314          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 315
 316    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 317       return NULL;
 318
 319    base.NativeRenderable = EGL_TRUE;
 320
 321    base.SurfaceType = surface_type;
 322    if (surface_type & (EGL_PBUFFER_BIT |
 323        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 324       base.BindToTextureRGB = bind_to_texture_rgb;
 325       if (base.AlphaSize > 0)
 326          base.BindToTextureRGBA = bind_to_texture_rgba;
 327    }
 328
 329    base.RenderableType = disp->ClientAPIs;
 330    base.Conformant = disp->ClientAPIs;
 331
 332    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 333    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 334
 335    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 336       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 337       return NULL;
 338    }
 339
 340    config_id = base.ConfigID;
 341    base.ConfigID    = EGL_DONT_CARE;
 342    base.SurfaceType = EGL_DONT_CARE;
 343    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 344                                  (_EGLArrayForEach) dri2_match_config, &base);
 345
 346    if (num_configs == 1) {
 347       conf = (struct dri2_egl_config *) matching_config;
 348
 349       if (!conf->dri_config[double_buffer][srgb])
 350          conf->dri_config[double_buffer][srgb] = dri_config;
 351       else
 352          /* a similar config type is already added (unlikely) => discard */
 353          return NULL;
 354    }
 355    else if (num_configs == 0) {
 356       conf = calloc(1, sizeof *conf);
 357       if (conf == NULL)
 358          return NULL;
 359
 360       conf->dri_config[double_buffer][srgb] = dri_config;
 361
 362       memcpy(&conf->base, &base, sizeof base);
 363       conf->base.SurfaceType = 0;
 364       conf->base.ConfigID = config_id;
 365
 366       _eglLinkConfig(&conf->base);
 367    }
 368    else {
 369       assert(0);
 370       return NULL;
 371    }
 372
 373    if (double_buffer) {
 374       surface_type &= ~EGL_PIXMAP_BIT;
 375    }
 376
 377    /* No support for pbuffer + MSAA for now.
 378     *
 379     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 380     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 381     */
 382    if (base.Samples) {
 383       surface_type &= ~EGL_PBUFFER_BIT;
 384    }
 385
 386    conf->base.SurfaceType |= surface_type;
 387
 388    return conf;
 389 }
 390
 391 __DRIimage *
 392 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 393 {
 394    _EGLDisplay *disp = data;
 395    struct dri2_egl_image *dri2_img;
 396    _EGLImage *img;
 397
 398    (void) screen;
 399
 400    img = _eglLookupImage(image, disp);
 401    if (img == NULL) {
 402       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 403       return NULL;
 404    }
 405
 406    dri2_img = dri2_egl_image(image);
 407
 408    return dri2_img->dri_image;
 409 }
 410
 411 const __DRIimageLookupExtension image_lookup_extension = {
 412    .base = { __DRI_IMAGE_LOOKUP, 1 },
 413
 414    .lookupEGLImage       = dri2_lookup_egl_image
 415 };
 416
 417 struct dri2_extension_match {
 418    const char *name;
 419    int version;
 420    int offset;
 421 };
 422
 423 static const struct dri2_extension_match dri3_driver_extensions[] = {
 424    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 425    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 426    { NULL, 0, 0 }
 427 };
 428
 429 static const struct dri2_extension_match dri2_driver_extensions[] = {
 430    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 431    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 432    { NULL, 0, 0 }
 433 };
 434
 435 static const struct dri2_extension_match dri2_core_extensions[] = {
 436    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 437    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 438    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 439    { NULL, 0, 0 }
 440 };
 441
 442 static const struct dri2_extension_match swrast_driver_extensions[] = {
 443    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 444    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 445    { NULL, 0, 0 }
 446 };
 447
 448 static const struct dri2_extension_match swrast_core_extensions[] = {
 449    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 450    { NULL, 0, 0 }
 451 };
 452
 453 static const struct dri2_extension_match optional_core_extensions[] = {
 454    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 455    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 456    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 457    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 458    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 459    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 460    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 461    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 462    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 463    { NULL, 0, 0 }
 464 };
 465
 466 static EGLBoolean
 467 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 468                      const struct dri2_extension_match *matches,
 469                      const __DRIextension **extensions,
 470                      bool optional)
 471 {
 472    int ret = EGL_TRUE;
 473    void *field;
 474
 475    for (int i = 0; extensions[i]; i++) {
 476       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 477       for (int j = 0; matches[j].name; j++) {
 478          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 479              extensions[i]->version >= matches[j].version) {
 480             field = ((char *) dri2_dpy + matches[j].offset);
 481             *(const __DRIextension **) field = extensions[i];
 482             _eglLog(_EGL_INFO, "found extension %s version %d",
 483                     extensions[i]->name, extensions[i]->version);
 484             break;
 485          }
 486       }
 487    }
 488
 489    for (int j = 0; matches[j].name; j++) {
 490       field = ((char *) dri2_dpy + matches[j].offset);
 491       if (*(const __DRIextension **) field == NULL) {
 492          if (optional) {
 493             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 494                     matches[j].name, matches[j].version);
 495          } else {
 496             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 497                     matches[j].name, matches[j].version);
 498             ret = EGL_FALSE;
 499          }
 500       }
 501    }
 502
 503    return ret;
 504 }
 505
 506 static const __DRIextension **
 507 dri2_open_driver(_EGLDisplay *disp)
 508 {
 509    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 510    const __DRIextension **extensions = NULL;
 511    char path[PATH_MAX], *search_paths, *next, *end;
 512    char *get_extensions_name;
 513    const __DRIextension **(*get_extensions)(void);
 514
 515    search_paths = NULL;
 516    if (geteuid() == getuid()) {
 517       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 518       search_paths = getenv("LIBGL_DRIVERS_PATH");
 519    }
 520    if (search_paths == NULL)
 521       search_paths = DEFAULT_DRIVER_DIR;
 522
 523    dri2_dpy->driver = NULL;
 524    end = search_paths + strlen(search_paths);
 525    for (char *p = search_paths; p < end; p = next + 1) {
 526       int len;
 527       next = strchr(p, ':');
 528       if (next == NULL)
 529          next = end;
 530
 531       len = next - p;
 532 #if GLX_USE_TLS
 533       snprintf(path, sizeof path,
 534                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 535       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 536 #endif
 537       if (dri2_dpy->driver == NULL) {
 538          snprintf(path, sizeof path,
 539                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 540          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 541          if (dri2_dpy->driver == NULL)
 542             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 543       }
 544       /* not need continue to loop all paths once the driver is found */
 545       if (dri2_dpy->driver != NULL)
 546          break;
 547    }
 548
 549    if (dri2_dpy->driver == NULL) {
 550       _eglLog(_EGL_WARNING,
 551               "DRI2: failed to open %s (search paths %s)",
 552               dri2_dpy->driver_name, search_paths);
 553       return NULL;
 554    }
 555
 556    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 557
 558    get_extensions_name = loader_get_extensions_name(dri2_dpy->driver_name);
 559    if (get_extensions_name) {
 560       get_extensions = dlsym(dri2_dpy->driver, get_extensions_name);
 561       if (get_extensions) {
 562          extensions = get_extensions();
 563       } else {
 564          _eglLog(_EGL_DEBUG, "driver does not expose %s(): %s\n",
 565                  get_extensions_name, dlerror());
 566       }
 567       free(get_extensions_name);
 568    }
 569
 570    if (!extensions)
 571       extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 572    if (extensions == NULL) {
 573       _eglLog(_EGL_WARNING,
 574               "DRI2: driver exports no extensions (%s)", dlerror());
 575       dlclose(dri2_dpy->driver);
 576    }
 577
 578    return extensions;
 579 }
 580
 581 EGLBoolean
 582 dri2_load_driver_dri3(_EGLDisplay *disp)
 583 {
 584    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 585    const __DRIextension **extensions;
 586
 587    extensions = dri2_open_driver(disp);
 588    if (!extensions)
 589       return EGL_FALSE;
 590
 591    if (!dri2_bind_extensions(dri2_dpy, dri3_driver_extensions, extensions, false)) {
 592       dlclose(dri2_dpy->driver);
 593       return EGL_FALSE;
 594    }
 595    dri2_dpy->driver_extensions = extensions;
 596
 597    return EGL_TRUE;
 598 }
 599
 600 EGLBoolean
 601 dri2_load_driver(_EGLDisplay *disp)
 602 {
 603    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 604    const __DRIextension **extensions;
 605
 606    extensions = dri2_open_driver(disp);
 607    if (!extensions)
 608       return EGL_FALSE;
 609
 610    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions, false)) {
 611       dlclose(dri2_dpy->driver);
 612       return EGL_FALSE;
 613    }
 614    dri2_dpy->driver_extensions = extensions;
 615
 616    return EGL_TRUE;
 617 }
 618
 619 EGLBoolean
 620 dri2_load_driver_swrast(_EGLDisplay *disp)
 621 {
 622    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 623    const __DRIextension **extensions;
 624
 625    extensions = dri2_open_driver(disp);
 626    if (!extensions)
 627       return EGL_FALSE;
 628
 629    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions, false)) {
 630       dlclose(dri2_dpy->driver);
 631       return EGL_FALSE;
 632    }
 633    dri2_dpy->driver_extensions = extensions;
 634
 635    return EGL_TRUE;
 636 }
 637
 638 static unsigned
 639 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 640 {
 641    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 642    unsigned int value = 0;
 643
 644    if (!rendererQuery ||
 645        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 646       return 0;
 647
 648    return value;
 649 }
 650
 651 void
 652 dri2_setup_screen(_EGLDisplay *disp)
 653 {
 654    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 655    unsigned int api_mask;
 656
 657    /*
 658     * EGL 1.5 specification defines the default value to 1. Moreover,
 659     * eglSwapInterval() is required to clamp requested value to the supported
 660     * range. Since the default value is implicitly assumed to be supported,
 661     * use it as both minimum and maximum for the platforms that do not allow
 662     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 663     * override these values already.
 664     */
 665    dri2_dpy->min_swap_interval = 1;
 666    dri2_dpy->max_swap_interval = 1;
 667    dri2_dpy->default_swap_interval = 1;
 668
 669    if (dri2_dpy->image_driver) {
 670       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 671    } else if (dri2_dpy->dri2) {
 672       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 673    } else {
 674       assert(dri2_dpy->swrast);
 675       api_mask = 1 << __DRI_API_OPENGL |
 676                  1 << __DRI_API_GLES |
 677                  1 << __DRI_API_GLES2 |
 678                  1 << __DRI_API_GLES3;
 679    }
 680
 681    disp->ClientAPIs = 0;
 682    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 683       disp->ClientAPIs |= EGL_OPENGL_BIT;
 684    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 685       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 686    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 687       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 688    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 689       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 690
 691    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 692    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 693    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 694
 695    /* Report back to EGL the bitmask of priorities supported */
 696    disp->Extensions.IMG_context_priority =
 697       dri2_renderer_query_integer(dri2_dpy,
 698                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 699
 700    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 701
 702    if (dri2_renderer_query_integer(dri2_dpy,
 703                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 704       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 705
 706    if (dri2_dpy->image_driver ||
 707        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 708        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 709       disp->Extensions.KHR_create_context = EGL_TRUE;
 710
 711       if (dri2_dpy->robustness)
 712          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 713    }
 714
 715    if (dri2_dpy->no_error)
 716       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 717
 718    if (dri2_dpy->fence) {
 719       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 720       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 721       if (dri2_dpy->fence->get_fence_from_cl_event)
 722          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 723       if (dri2_dpy->fence->base.version >= 2 &&
 724           dri2_dpy->fence->get_capabilities) {
 725          unsigned capabilities =
 726             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 727          disp->Extensions.ANDROID_native_fence_sync =
 728             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 729       }
 730    }
 731
 732    if (dri2_dpy->blob)
 733       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 734
 735    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 736
 737    if (dri2_dpy->image) {
 738       if (dri2_dpy->image->base.version >= 10 &&
 739           dri2_dpy->image->getCapabilities != NULL) {
 740          int capabilities;
 741
 742          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 743          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 744
 745          if (dri2_dpy->image->base.version >= 11)
 746             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 747       } else {
 748          disp->Extensions.MESA_drm_image = EGL_TRUE;
 749          if (dri2_dpy->image->base.version >= 11)
 750             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 751       }
 752
 753       disp->Extensions.KHR_image_base = EGL_TRUE;
 754       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 755       if (dri2_dpy->image->base.version >= 5 &&
 756           dri2_dpy->image->createImageFromTexture) {
 757          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 758          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 759
 760          if (dri2_renderer_query_integer(dri2_dpy,
 761                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 762              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 763       }
 764 #ifdef HAVE_LIBDRM
 765       if (dri2_dpy->image->base.version >= 8 &&
 766           dri2_dpy->image->createImageFromDmaBufs) {
 767          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 768       }
 769       if (dri2_dpy->image->base.version >= 15 &&
 770           dri2_dpy->image->createImageFromDmaBufs2 &&
 771           dri2_dpy->image->queryDmaBufFormats &&
 772           dri2_dpy->image->queryDmaBufModifiers) {
 773          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 774       }
 775 #endif
 776    }
 777
 778    if (dri2_dpy->flush_control)
 779       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 780 }
 781
 782 void
 783 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 784 {
 785    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 786    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 787
 788    /* Allow driconf to override applications.*/
 789    if (dri2_dpy->config)
 790       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 791                                      "vblank_mode", &vblank_mode);
 792    switch (vblank_mode) {
 793    case DRI_CONF_VBLANK_NEVER:
 794       dri2_dpy->min_swap_interval = 0;
 795       dri2_dpy->max_swap_interval = 0;
 796       dri2_dpy->default_swap_interval = 0;
 797       break;
 798    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 799       dri2_dpy->min_swap_interval = 1;
 800       dri2_dpy->max_swap_interval = max_swap_interval;
 801       dri2_dpy->default_swap_interval = 1;
 802       break;
 803    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 804       dri2_dpy->min_swap_interval = 0;
 805       dri2_dpy->max_swap_interval = max_swap_interval;
 806       dri2_dpy->default_swap_interval = 0;
 807       break;
 808    default:
 809    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 810       dri2_dpy->min_swap_interval = 0;
 811       dri2_dpy->max_swap_interval = max_swap_interval;
 812       dri2_dpy->default_swap_interval = 1;
 813       break;
 814    }
 815 }
 816
 817 /* All platforms but DRM call this function to create the screen and populate
 818  * the driver_configs. DRM inherits that information from its display - GBM.
 819  */
 820 EGLBoolean
 821 dri2_create_screen(_EGLDisplay *disp)
 822 {
 823    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 824
 825    if (dri2_dpy->image_driver) {
 826       dri2_dpy->dri_screen =
 827          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 828                                                   dri2_dpy->loader_extensions,
 829                                                   dri2_dpy->driver_extensions,
 830                                                   &dri2_dpy->driver_configs,
 831                                                   disp);
 832    } else if (dri2_dpy->dri2) {
 833       if (dri2_dpy->dri2->base.version >= 4) {
 834          dri2_dpy->dri_screen =
 835             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 836                                              dri2_dpy->loader_extensions,
 837                                              dri2_dpy->driver_extensions,
 838                                              &dri2_dpy->driver_configs, disp);
 839       } else {
 840          dri2_dpy->dri_screen =
 841             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 842                                             dri2_dpy->loader_extensions,
 843                                             &dri2_dpy->driver_configs, disp);
 844       }
 845    } else {
 846       assert(dri2_dpy->swrast);
 847       if (dri2_dpy->swrast->base.version >= 4) {
 848          dri2_dpy->dri_screen =
 849             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 850                                                dri2_dpy->driver_extensions,
 851                                                &dri2_dpy->driver_configs, disp);
 852       } else {
 853          dri2_dpy->dri_screen =
 854             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 855                                               &dri2_dpy->driver_configs, disp);
 856       }
 857    }
 858
 859    if (dri2_dpy->dri_screen == NULL) {
 860       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 861       return EGL_FALSE;
 862    }
 863
 864    dri2_dpy->own_dri_screen = true;
 865    return EGL_TRUE;
 866 }
 867
 868 EGLBoolean
 869 dri2_setup_extensions(_EGLDisplay *disp)
 870 {
 871    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 872    const struct dri2_extension_match *mandatory_core_extensions;
 873    const __DRIextension **extensions;
 874
 875    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 876
 877    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 878       mandatory_core_extensions = dri2_core_extensions;
 879    else
 880       mandatory_core_extensions = swrast_core_extensions;
 881
 882    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 883       return EGL_FALSE;
 884
 885 #ifdef HAVE_DRI3_MODIFIERS
 886    dri2_dpy->multibuffers_available =
 887       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
 888                                             dri2_dpy->dri3_minor_version >= 2)) &&
 889       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
 890                                                dri2_dpy->present_minor_version >= 2)) &&
 891       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
 892 #endif
 893
 894    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 895    return EGL_TRUE;
 896 }
 897
 898 /**
 899  * Called via eglInitialize(), GLX_drv->API.Initialize().
 900  *
 901  * This must be guaranteed to be called exactly once, even if eglInitialize is
 902  * called many times (without a eglTerminate in between).
 903  */
 904 static EGLBoolean
 905 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 906 {
 907    EGLBoolean ret = EGL_FALSE;
 908    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 909
 910    /* In the case where the application calls eglMakeCurrent(context1),
 911     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 912     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 913     * initialized, as we need it to be able to free context1 correctly.
 914     *
 915     * It would probably be safest to forcibly release the display with
 916     * dri2_display_release, to make sure the display is reinitialized correctly.
 917     * However, the EGL spec states that we need to keep a reference to the
 918     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 919     * we would leak context1 as we would be missing the old display connection
 920     * to free it up correctly.
 921     */
 922    if (dri2_dpy) {
 923       dri2_dpy->ref_count++;
 924       return EGL_TRUE;
 925    }
 926
 927    switch (disp->Platform) {
 928    case _EGL_PLATFORM_SURFACELESS:
 929       ret = dri2_initialize_surfaceless(drv, disp);
 930       break;
 931    case _EGL_PLATFORM_X11:
 932       ret = dri2_initialize_x11(drv, disp);
 933       break;
 934    case _EGL_PLATFORM_DRM:
 935       ret = dri2_initialize_drm(drv, disp);
 936       break;
 937    case _EGL_PLATFORM_WAYLAND:
 938       ret = dri2_initialize_wayland(drv, disp);
 939       break;
 940    case _EGL_PLATFORM_ANDROID:
 941       ret = dri2_initialize_android(drv, disp);
 942       break;
 943    default:
 944       unreachable("Callers ensure we cannot get here.");
 945       return EGL_FALSE;
 946    }
 947
 948    if (!ret)
 949       return EGL_FALSE;
 950
 951    dri2_dpy = dri2_egl_display(disp);
 952    dri2_dpy->ref_count++;
 953
 954    return EGL_TRUE;
 955 }
 956
 957 /**
 958  * Decrement display reference count, and free up display if necessary.
 959  */
 960 static void
 961 dri2_display_release(_EGLDisplay *disp)
 962 {
 963    struct dri2_egl_display *dri2_dpy;
 964
 965    if (!disp)
 966       return;
 967
 968    dri2_dpy = dri2_egl_display(disp);
 969
 970    assert(dri2_dpy->ref_count > 0);
 971    dri2_dpy->ref_count--;
 972
 973    if (dri2_dpy->ref_count > 0)
 974       return;
 975
 976    _eglCleanupDisplay(disp);
 977    dri2_display_destroy(disp);
 978 }
 979
 980 void
 981 dri2_display_destroy(_EGLDisplay *disp)
 982 {
 983    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 984
 985    if (dri2_dpy->own_dri_screen) {
 986       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
 987          dri2_dpy->vtbl->close_screen_notify(disp);
 988       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 989    }
 990    if (dri2_dpy->fd >= 0)
 991       close(dri2_dpy->fd);
 992    if (dri2_dpy->driver)
 993       dlclose(dri2_dpy->driver);
 994    free(dri2_dpy->driver_name);
 995
 996 #ifdef HAVE_WAYLAND_PLATFORM
 997    free(dri2_dpy->device_name);
 998 #endif
 999
1000    switch (disp->Platform) {
1001    case _EGL_PLATFORM_X11:
1002       dri2_teardown_x11(dri2_dpy);
1003       break;
1004    case _EGL_PLATFORM_DRM:
1005       dri2_teardown_drm(dri2_dpy);
1006       break;
1007    case _EGL_PLATFORM_WAYLAND:
1008       dri2_teardown_wayland(dri2_dpy);
1009       break;
1010    default:
1011       /* TODO: add teardown for other platforms */
1012       break;
1013    }
1014
1015    /* The drm platform does not create the screen/driver_configs but reuses
1016     * the ones from the gbm device. As such the gbm itself is responsible
1017     * for the cleanup.
1018     */
1019    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1020       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1021          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1022       free(dri2_dpy->driver_configs);
1023    }
1024    free(dri2_dpy);
1025    disp->DriverData = NULL;
1026 }
1027
1028 __DRIbuffer *
1029 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1030                                     unsigned int att, unsigned int format)
1031 {
1032    struct dri2_egl_display *dri2_dpy =
1033       dri2_egl_display(dri2_surf->base.Resource.Display);
1034
1035    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1036       return NULL;
1037
1038    if (!dri2_surf->local_buffers[att]) {
1039       dri2_surf->local_buffers[att] =
1040          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1041                                         dri2_surf->base.Width, dri2_surf->base.Height);
1042    }
1043
1044    return dri2_surf->local_buffers[att];
1045 }
1046
1047 void
1048 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1049 {
1050    struct dri2_egl_display *dri2_dpy =
1051       dri2_egl_display(dri2_surf->base.Resource.Display);
1052
1053    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1054       if (dri2_surf->local_buffers[i]) {
1055          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1056                                        dri2_surf->local_buffers[i]);
1057          dri2_surf->local_buffers[i] = NULL;
1058       }
1059    }
1060 }
1061
1062 /**
1063  * Called via eglTerminate(), drv->API.Terminate().
1064  *
1065  * This must be guaranteed to be called exactly once, even if eglTerminate is
1066  * called many times (without a eglInitialize in between).
1067  */
1068 static EGLBoolean
1069 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1070 {
1071    /* Release all non-current Context/Surfaces. */
1072    _eglReleaseDisplayResources(drv, disp);
1073
1074    dri2_display_release(disp);
1075
1076    return EGL_TRUE;
1077 }
1078
1079 /**
1080  * Set the error code after a call to
1081  * dri2_egl_display::dri2::createContextAttribs.
1082  */
1083 static void
1084 dri2_create_context_attribs_error(int dri_error)
1085 {
1086    EGLint egl_error;
1087
1088    switch (dri_error) {
1089    case __DRI_CTX_ERROR_SUCCESS:
1090       return;
1091
1092    case __DRI_CTX_ERROR_NO_MEMORY:
1093       egl_error = EGL_BAD_ALLOC;
1094       break;
1095
1096   /* From the EGL_KHR_create_context spec, section "Errors":
1097    *
1098    *   * If <config> does not support a client API context compatible
1099    *     with the requested API major and minor version, [...] context flags,
1100    *     and context reset notification behavior (for client API types where
1101    *     these attributes are supported), then an EGL_BAD_MATCH error is
1102    *     generated.
1103    *
1104    *   * If an OpenGL ES context is requested and the values for
1105    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1106    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1107    *     is not defined, than an EGL_BAD_MATCH error is generated.
1108    *
1109    *   * If an OpenGL context is requested, the requested version is
1110    *     greater than 3.2, and the value for attribute
1111    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1112    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1113    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1114    *     one of these bits set; or if the implementation does not support
1115    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1116    */
1117    case __DRI_CTX_ERROR_BAD_API:
1118    case __DRI_CTX_ERROR_BAD_VERSION:
1119    case __DRI_CTX_ERROR_BAD_FLAG:
1120       egl_error = EGL_BAD_MATCH;
1121       break;
1122
1123   /* From the EGL_KHR_create_context spec, section "Errors":
1124    *
1125    *   * If an attribute name or attribute value in <attrib_list> is not
1126    *     recognized (including unrecognized bits in bitmask attributes),
1127    *     then an EGL_BAD_ATTRIBUTE error is generated."
1128    */
1129    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1130    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1131       egl_error = EGL_BAD_ATTRIBUTE;
1132       break;
1133
1134    default:
1135       assert(0);
1136       egl_error = EGL_BAD_MATCH;
1137       break;
1138    }
1139
1140    _eglError(egl_error, "dri2_create_context");
1141 }
1142
1143 static bool
1144 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1145                           struct dri2_egl_display *dri2_dpy,
1146                           uint32_t *ctx_attribs,
1147                           unsigned *num_attribs)
1148 {
1149    int pos = 0;
1150
1151    assert(*num_attribs >= NUM_ATTRIBS);
1152
1153    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1154    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1155    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1156    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1157
1158    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1159       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1160        * extension, don't even try to send it the robust-access flag.
1161        * It may explode.  Instead, generate the required EGL error here.
1162        */
1163       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1164             && !dri2_dpy->robustness) {
1165          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1166          return false;
1167       }
1168
1169       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1170       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1171          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1172    }
1173
1174    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1175       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1176        * extension, don't even try to send it a reset strategy.  It may
1177        * explode.  Instead, generate the required EGL error here.
1178        */
1179       if (!dri2_dpy->robustness) {
1180          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1181          return false;
1182       }
1183
1184       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1185       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1186    }
1187
1188    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1189       unsigned val;
1190
1191       switch (dri2_ctx->base.ContextPriority) {
1192       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1193          val = __DRI_CTX_PRIORITY_HIGH;
1194          break;
1195       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1196          val = __DRI_CTX_PRIORITY_MEDIUM;
1197          break;
1198       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1199          val = __DRI_CTX_PRIORITY_LOW;
1200          break;
1201       default:
1202          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1203          return false;
1204       }
1205
1206       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1207       ctx_attribs[pos++] = val;
1208    }
1209
1210    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1211       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1212       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1213    }
1214
1215    *num_attribs = pos;
1216
1217    return true;
1218 }
1219
1220 /**
1221  * Called via eglCreateContext(), drv->API.CreateContext().
1222  */
1223 static _EGLContext *
1224 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1225                     _EGLContext *share_list, const EGLint *attrib_list)
1226 {
1227    struct dri2_egl_context *dri2_ctx;
1228    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1229    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1230    __DRIcontext *shared =
1231       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1232    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1233    const __DRIconfig *dri_config;
1234    int api;
1235    unsigned error;
1236    unsigned num_attribs = NUM_ATTRIBS;
1237    uint32_t ctx_attribs[NUM_ATTRIBS];
1238
1239    (void) drv;
1240
1241    dri2_ctx = malloc(sizeof *dri2_ctx);
1242    if (!dri2_ctx) {
1243       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1244       return NULL;
1245    }
1246
1247    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1248       goto cleanup;
1249
1250    /* The EGL_EXT_create_context_robustness spec says:
1251     *
1252     *    "Add to the eglCreateContext context creation errors: [...]
1253     *
1254     *     * If the reset notification behavior of <share_context> and the
1255     *       newly created context are different then an EGL_BAD_MATCH error is
1256     *       generated."
1257     */
1258    if (share_list && share_list->ResetNotificationStrategy !=
1259                      dri2_ctx->base.ResetNotificationStrategy) {
1260       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1261       goto cleanup;
1262    }
1263
1264    /* The EGL_KHR_create_context_no_error spec says:
1265     *
1266     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1267     *    used to create <share_context> does not match the value of
1268     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1269     */
1270    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1271       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1272       goto cleanup;
1273    }
1274
1275    switch (dri2_ctx->base.ClientAPI) {
1276    case EGL_OPENGL_ES_API:
1277       switch (dri2_ctx->base.ClientMajorVersion) {
1278       case 1:
1279          api = __DRI_API_GLES;
1280          break;
1281       case 2:
1282          api = __DRI_API_GLES2;
1283          break;
1284       case 3:
1285          api = __DRI_API_GLES3;
1286          break;
1287       default:
1288          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1289          free(dri2_ctx);
1290          return NULL;
1291       }
1292       break;
1293    case EGL_OPENGL_API:
1294       if ((dri2_ctx->base.ClientMajorVersion >= 4
1295            || (dri2_ctx->base.ClientMajorVersion == 3
1296                && dri2_ctx->base.ClientMinorVersion >= 2))
1297           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1298          api = __DRI_API_OPENGL_CORE;
1299       else
1300          api = __DRI_API_OPENGL;
1301       break;
1302    default:
1303       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1304       free(dri2_ctx);
1305       return NULL;
1306    }
1307
1308    if (conf != NULL) {
1309       /* The config chosen here isn't necessarily
1310        * used for surfaces later.
1311        * A pixmap surface will use the single config.
1312        * This opportunity depends on disabling the
1313        * doubleBufferMode check in
1314        * src/mesa/main/context.c:check_compatible()
1315        */
1316       if (dri2_config->dri_config[1][0])
1317          dri_config = dri2_config->dri_config[1][0];
1318       else
1319          dri_config = dri2_config->dri_config[0][0];
1320
1321       /* EGL_WINDOW_BIT is set only when there is a double-buffered dri_config.
1322        * This makes sure the back buffer will always be used.
1323        */
1324       if (conf->SurfaceType & EGL_WINDOW_BIT)
1325          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
1326    }
1327    else
1328       dri_config = NULL;
1329
1330    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1331                                   &num_attribs))
1332       goto cleanup;
1333
1334    if (dri2_dpy->image_driver) {
1335       dri2_ctx->dri_context =
1336          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1337                                                       api,
1338                                                       dri_config,
1339                                                       shared,
1340                                                       num_attribs / 2,
1341                                                       ctx_attribs,
1342                                                       & error,
1343                                                       dri2_ctx);
1344       dri2_create_context_attribs_error(error);
1345    } else if (dri2_dpy->dri2) {
1346       if (dri2_dpy->dri2->base.version >= 3) {
1347          dri2_ctx->dri_context =
1348             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1349                                                  api,
1350                                                  dri_config,
1351                                                  shared,
1352                                                  num_attribs / 2,
1353                                                  ctx_attribs,
1354                                                  & error,
1355                                                  dri2_ctx);
1356          dri2_create_context_attribs_error(error);
1357       } else {
1358          dri2_ctx->dri_context =
1359             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1360                                                    api,
1361                                                    dri_config,
1362                                                    shared,
1363                                                    dri2_ctx);
1364       }
1365    } else {
1366       assert(dri2_dpy->swrast);
1367       if (dri2_dpy->swrast->base.version >= 3) {
1368          dri2_ctx->dri_context =
1369             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1370                                                    api,
1371                                                    dri_config,
1372                                                    shared,
1373                                                    num_attribs / 2,
1374                                                    ctx_attribs,
1375                                                    & error,
1376                                                    dri2_ctx);
1377          dri2_create_context_attribs_error(error);
1378       } else {
1379          dri2_ctx->dri_context =
1380             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1381                                                      api,
1382                                                      dri_config,
1383                                                      shared,
1384                                                      dri2_ctx);
1385       }
1386    }
1387
1388    if (!dri2_ctx->dri_context)
1389       goto cleanup;
1390
1391    return &dri2_ctx->base;
1392
1393  cleanup:
1394    free(dri2_ctx);
1395    return NULL;
1396 }
1397
1398 /**
1399  * Called via eglDestroyContext(), drv->API.DestroyContext().
1400  */
1401 static EGLBoolean
1402 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1403 {
1404    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1405    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1406
1407    if (_eglPutContext(ctx)) {
1408       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1409       free(dri2_ctx);
1410    }
1411
1412    return EGL_TRUE;
1413 }
1414
1415 EGLBoolean
1416 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
1417         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1418 {
1419    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1420    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1421
1422    dri2_surf->out_fence_fd = -1;
1423    dri2_surf->enable_out_fence = false;
1424    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1425        dri2_dpy->fence->get_capabilities &&
1426        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1427         __DRI_FENCE_CAP_NATIVE_FD)) {
1428       dri2_surf->enable_out_fence = enable_out_fence;
1429    }
1430
1431    return _eglInitSurface(surf, dpy, type, conf, attrib_list);
1432 }
1433
1434 static void
1435 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1436 {
1437    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1438
1439    if (dri2_surf->out_fence_fd >= 0)
1440       close(dri2_surf->out_fence_fd);
1441
1442    dri2_surf->out_fence_fd = fence_fd;
1443 }
1444
1445 void
1446 dri2_fini_surface(_EGLSurface *surf)
1447 {
1448    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1449
1450    dri2_surface_set_out_fence_fd(surf, -1);
1451    dri2_surf->enable_out_fence = false;
1452 }
1453
1454 static EGLBoolean
1455 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1456 {
1457    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1458
1459    if (!_eglPutSurface(surf))
1460       return EGL_TRUE;
1461
1462    return dri2_dpy->vtbl->destroy_surface(drv, dpy, surf);
1463 }
1464
1465 static void
1466 dri2_surf_update_fence_fd(_EGLContext *ctx,
1467                           _EGLDisplay *dpy, _EGLSurface *surf)
1468 {
1469    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1470    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1471    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1472    int fence_fd = -1;
1473    void *fence;
1474
1475    if (!dri2_surf->enable_out_fence)
1476       return;
1477
1478    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1479    if (fence) {
1480       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1481                                                fence);
1482       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1483    }
1484    dri2_surface_set_out_fence_fd(surf, fence_fd);
1485 }
1486
1487 /**
1488  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1489  */
1490 static EGLBoolean
1491 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1492                   _EGLSurface *rsurf, _EGLContext *ctx)
1493 {
1494    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1495    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1496    _EGLContext *old_ctx;
1497    _EGLSurface *old_dsurf, *old_rsurf;
1498    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1499    __DRIdrawable *ddraw, *rdraw;
1500    __DRIcontext *cctx;
1501    EGLBoolean unbind;
1502
1503    if (!dri2_dpy)
1504       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1505
1506    /* make new bindings */
1507    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1508       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1509       return EGL_FALSE;
1510    }
1511
1512    /* flush before context switch */
1513    if (old_ctx)
1514       dri2_gl_flush();
1515
1516    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1517    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1518    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1519
1520    if (old_ctx) {
1521       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1522
1523       if (old_dsurf)
1524          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1525       dri2_dpy->core->unbindContext(old_cctx);
1526    }
1527
1528    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1529
1530    if (unbind || dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1531       dri2_destroy_surface(drv, disp, old_dsurf);
1532       dri2_destroy_surface(drv, disp, old_rsurf);
1533
1534       if (!unbind)
1535          dri2_dpy->ref_count++;
1536       if (old_ctx) {
1537          EGLDisplay old_disp = _eglGetDisplayHandle(old_ctx->Resource.Display);
1538          dri2_destroy_context(drv, disp, old_ctx);
1539          dri2_display_release(old_disp);
1540       }
1541
1542       return EGL_TRUE;
1543    } else {
1544       /* undo the previous _eglBindContext */
1545       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1546       assert(&dri2_ctx->base == ctx &&
1547              tmp_dsurf == dsurf &&
1548              tmp_rsurf == rsurf);
1549
1550       _eglPutSurface(dsurf);
1551       _eglPutSurface(rsurf);
1552       _eglPutContext(ctx);
1553
1554       _eglPutSurface(old_dsurf);
1555       _eglPutSurface(old_rsurf);
1556       _eglPutContext(old_ctx);
1557
1558       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1559        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1560        * as EGL_SUCCESS.
1561        */
1562       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1563    }
1564 }
1565
1566 __DRIdrawable *
1567 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1568 {
1569    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1570
1571    return dri2_surf->dri_drawable;
1572 }
1573
1574 /*
1575  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1576  */
1577 static _EGLProc
1578 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1579 {
1580    return _glapi_get_proc_address(procname);
1581 }
1582
1583 static _EGLSurface*
1584 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1585                            _EGLConfig *conf, void *native_window,
1586                            const EGLint *attrib_list)
1587 {
1588    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1589    return dri2_dpy->vtbl->create_window_surface(drv, dpy, conf, native_window,
1590                                                 attrib_list);
1591 }
1592
1593 static _EGLSurface*
1594 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1595                            _EGLConfig *conf, void *native_pixmap,
1596                            const EGLint *attrib_list)
1597 {
1598    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1599    return dri2_dpy->vtbl->create_pixmap_surface(drv, dpy, conf, native_pixmap,
1600                                                 attrib_list);
1601 }
1602
1603 static _EGLSurface*
1604 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1605                            _EGLConfig *conf, const EGLint *attrib_list)
1606 {
1607    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1608    return dri2_dpy->vtbl->create_pbuffer_surface(drv, dpy, conf, attrib_list);
1609 }
1610
1611 static EGLBoolean
1612 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1613                    EGLint interval)
1614 {
1615    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1616    if (!dri2_dpy->vtbl->swap_interval)
1617       return EGL_TRUE;
1618    return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval);
1619 }
1620
1621 /**
1622  * Asks the client API to flush any rendering to the drawable so that we can
1623  * do our swapbuffers.
1624  */
1625 void
1626 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1627 {
1628    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1629    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1630
1631    if (dri2_dpy->flush) {
1632       if (dri2_dpy->flush->base.version >= 4) {
1633          /* We know there's a current context because:
1634           *
1635           *     "If surface is not bound to the calling thread’s current
1636           *      context, an EGL_BAD_SURFACE error is generated."
1637          */
1638          _EGLContext *ctx = _eglGetCurrentContext();
1639          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1640
1641          /* From the EGL 1.4 spec (page 52):
1642           *
1643           *     "The contents of ancillary buffers are always undefined
1644           *      after calling eglSwapBuffers."
1645           */
1646          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1647                                            dri_drawable,
1648                                            __DRI2_FLUSH_DRAWABLE |
1649                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1650                                            __DRI2_THROTTLE_SWAPBUFFER);
1651       } else {
1652          dri2_dpy->flush->flush(dri_drawable);
1653       }
1654    }
1655 }
1656
1657 static EGLBoolean
1658 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1659 {
1660    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1661    _EGLContext *ctx = _eglGetCurrentContext();
1662
1663    if (ctx && surf)
1664       dri2_surf_update_fence_fd(ctx, dpy, surf);
1665    return dri2_dpy->vtbl->swap_buffers(drv, dpy, surf);
1666 }
1667
1668 static EGLBoolean
1669 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *dpy,
1670                               _EGLSurface *surf,
1671                               const EGLint *rects, EGLint n_rects)
1672 {
1673    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1674    _EGLContext *ctx = _eglGetCurrentContext();
1675
1676    if (ctx && surf)
1677       dri2_surf_update_fence_fd(ctx, dpy, surf);
1678    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, dpy, surf,
1679                                                    rects, n_rects);
1680 }
1681
1682 static EGLBoolean
1683 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1684                          EGLint numRects, const EGLint *rects)
1685 {
1686    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1687    return dri2_dpy->vtbl->swap_buffers_region(drv, dpy, surf, numRects, rects);
1688 }
1689
1690 static EGLBoolean
1691 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1692                        EGLint *rects, EGLint n_rects)
1693 {
1694    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1695    return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
1696 }
1697
1698 static EGLBoolean
1699 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1700                      EGLint x, EGLint y, EGLint width, EGLint height)
1701 {
1702    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1703    return dri2_dpy->vtbl->post_sub_buffer(drv, dpy, surf, x, y, width, height);
1704 }
1705
1706 static EGLBoolean
1707 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1708                   void *native_pixmap_target)
1709 {
1710    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1711    return dri2_dpy->vtbl->copy_buffers(drv, dpy, surf, native_pixmap_target);
1712 }
1713
1714 static EGLint
1715 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1716 {
1717    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1718    return dri2_dpy->vtbl->query_buffer_age(drv, dpy, surf);
1719 }
1720
1721 static EGLBoolean
1722 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1723 {
1724    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1725    _EGLSurface *surf = ctx->DrawSurface;
1726    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1727
1728    (void) drv;
1729
1730    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1731     * we need to copy fake to real here.*/
1732
1733    if (dri2_dpy->flush != NULL)
1734       dri2_dpy->flush->flush(dri_drawable);
1735
1736    return EGL_TRUE;
1737 }
1738
1739 static EGLBoolean
1740 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1741 {
1742    (void) drv;
1743    (void) disp;
1744
1745    if (engine != EGL_CORE_NATIVE_ENGINE)
1746       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1747    /* glXWaitX(); */
1748
1749    return EGL_TRUE;
1750 }
1751
1752 static EGLBoolean
1753 dri2_bind_tex_image(_EGLDriver *drv,
1754                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1755 {
1756    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1757    struct dri2_egl_context *dri2_ctx;
1758    _EGLContext *ctx;
1759    GLint format, target;
1760    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1761
1762    ctx = _eglGetCurrentContext();
1763    dri2_ctx = dri2_egl_context(ctx);
1764
1765    if (!_eglBindTexImage(drv, disp, surf, buffer))
1766       return EGL_FALSE;
1767
1768    switch (surf->TextureFormat) {
1769    case EGL_TEXTURE_RGB:
1770       format = __DRI_TEXTURE_FORMAT_RGB;
1771       break;
1772    case EGL_TEXTURE_RGBA:
1773       format = __DRI_TEXTURE_FORMAT_RGBA;
1774       break;
1775    default:
1776       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1777       format = __DRI_TEXTURE_FORMAT_RGBA;
1778    }
1779
1780    switch (surf->TextureTarget) {
1781    case EGL_TEXTURE_2D:
1782       target = GL_TEXTURE_2D;
1783       break;
1784    default:
1785       target = GL_TEXTURE_2D;
1786       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1787    }
1788
1789    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1790                                        target, format,
1791                                        dri_drawable);
1792
1793    return EGL_TRUE;
1794 }
1795
1796 static EGLBoolean
1797 dri2_release_tex_image(_EGLDriver *drv,
1798                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1799 {
1800    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1801    struct dri2_egl_context *dri2_ctx;
1802    _EGLContext *ctx;
1803    GLint  target;
1804    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1805
1806    ctx = _eglGetCurrentContext();
1807    dri2_ctx = dri2_egl_context(ctx);
1808
1809    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1810       return EGL_FALSE;
1811
1812    switch (surf->TextureTarget) {
1813    case EGL_TEXTURE_2D:
1814       target = GL_TEXTURE_2D;
1815       break;
1816    default:
1817       assert(0);
1818    }
1819
1820    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1821        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1822       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1823                                              target, dri_drawable);
1824    }
1825
1826    return EGL_TRUE;
1827 }
1828
1829 static _EGLImage*
1830 dri2_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
1831                   EGLenum target, EGLClientBuffer buffer,
1832                   const EGLint *attr_list)
1833 {
1834    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1835    return dri2_dpy->vtbl->create_image(drv, dpy, ctx, target, buffer,
1836                                        attr_list);
1837 }
1838
1839 static _EGLImage *
1840 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1841 {
1842    struct dri2_egl_image *dri2_img;
1843
1844    if (dri_image == NULL) {
1845       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1846       return NULL;
1847    }
1848
1849    dri2_img = malloc(sizeof *dri2_img);
1850    if (!dri2_img) {
1851       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1852       return NULL;
1853    }
1854
1855    _eglInitImage(&dri2_img->base, disp);
1856
1857    dri2_img->dri_image = dri_image;
1858
1859    return &dri2_img->base;
1860 }
1861
1862 /**
1863  * Translate a DRI Image extension error code into an EGL error code.
1864  */
1865 static EGLint
1866 egl_error_from_dri_image_error(int dri_error)
1867 {
1868    switch (dri_error) {
1869    case __DRI_IMAGE_ERROR_SUCCESS:
1870       return EGL_SUCCESS;
1871    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1872       return EGL_BAD_ALLOC;
1873    case __DRI_IMAGE_ERROR_BAD_MATCH:
1874       return EGL_BAD_MATCH;
1875    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1876       return EGL_BAD_PARAMETER;
1877    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1878       return EGL_BAD_ACCESS;
1879    default:
1880       assert(0);
1881       return EGL_BAD_ALLOC;
1882    }
1883 }
1884
1885 static _EGLImage *
1886 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1887                                    EGLClientBuffer buffer,
1888                                    const EGLint *attr_list)
1889 {
1890    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1891    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1892    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1893    __DRIimage *dri_image;
1894
1895    if (renderbuffer == 0) {
1896       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1897       return EGL_NO_IMAGE_KHR;
1898    }
1899
1900    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1901       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1902       return EGL_NO_IMAGE_KHR;
1903    }
1904
1905    if (dri2_dpy->image->base.version >= 17 &&
1906        dri2_dpy->image->createImageFromRenderbuffer2) {
1907       unsigned error = ~0;
1908
1909       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1910                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1911
1912       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1913
1914       if (!dri_image) {
1915          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1916          return EGL_NO_IMAGE_KHR;
1917       }
1918    } else {
1919       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1920                dri2_ctx->dri_context, renderbuffer, NULL);
1921       if (!dri_image) {
1922          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1923          return EGL_NO_IMAGE_KHR;
1924       }
1925    }
1926
1927    return dri2_create_image_from_dri(disp, dri_image);
1928 }
1929
1930 #ifdef HAVE_WAYLAND_PLATFORM
1931
1932 /* This structure describes how a wl_buffer maps to one or more
1933  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1934  * offsets and strides of the planes in the buffer.  This table maps a
1935  * wl_drm format code to a description of the planes in the buffer
1936  * that lets us create a __DRIimage for each of the planes. */
1937
1938 static const struct wl_drm_components_descriptor {
1939    uint32_t dri_components;
1940    EGLint components;
1941    int nplanes;
1942 } wl_drm_components[] = {
1943    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1944    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1945    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1946    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1947    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1948 };
1949
1950 static _EGLImage *
1951 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1952                                     EGLClientBuffer _buffer,
1953                                     const EGLint *attr_list)
1954 {
1955    struct wl_drm_buffer *buffer;
1956    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1957    const struct wl_drm_components_descriptor *f;
1958    __DRIimage *dri_image;
1959    _EGLImageAttribs attrs;
1960    int32_t plane;
1961
1962    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1963                                    (struct wl_resource *) _buffer);
1964    if (!buffer)
1965        return NULL;
1966
1967    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1968       return NULL;
1969
1970    plane = attrs.PlaneWL;
1971    f = buffer->driver_format;
1972    if (plane < 0 || plane >= f->nplanes) {
1973       _eglError(EGL_BAD_PARAMETER,
1974                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1975       return NULL;
1976    }
1977
1978    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1979    if (dri_image == NULL && plane == 0)
1980       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
1981    if (dri_image == NULL) {
1982       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1983       return NULL;
1984    }
1985
1986    return dri2_create_image_from_dri(disp, dri_image);
1987 }
1988 #endif
1989
1990 static EGLBoolean
1991 dri2_get_sync_values_chromium(_EGLDisplay *dpy, _EGLSurface *surf,
1992                               EGLuint64KHR *ust, EGLuint64KHR *msc,
1993                               EGLuint64KHR *sbc)
1994 {
1995    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1996    return dri2_dpy->vtbl->get_sync_values(dpy, surf, ust, msc, sbc);
1997 }
1998
1999 /**
2000  * Set the error code after a call to
2001  * dri2_egl_image::dri_image::createImageFromTexture.
2002  */
2003 static void
2004 dri2_create_image_khr_texture_error(int dri_error)
2005 {
2006    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2007
2008    if (egl_error != EGL_SUCCESS)
2009       _eglError(egl_error, "dri2_create_image_khr_texture");
2010 }
2011
2012 static _EGLImage *
2013 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2014                                    EGLenum target,
2015                                    EGLClientBuffer buffer,
2016                                    const EGLint *attr_list)
2017 {
2018    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2019    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2020    struct dri2_egl_image *dri2_img;
2021    GLuint texture = (GLuint) (uintptr_t) buffer;
2022    _EGLImageAttribs attrs;
2023    GLuint depth;
2024    GLenum gl_target;
2025    unsigned error;
2026
2027    if (texture == 0) {
2028       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2029       return EGL_NO_IMAGE_KHR;
2030    }
2031
2032    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2033       return EGL_NO_IMAGE_KHR;
2034
2035    switch (target) {
2036    case EGL_GL_TEXTURE_2D_KHR:
2037       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2038          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2039          return EGL_NO_IMAGE_KHR;
2040       }
2041       depth = 0;
2042       gl_target = GL_TEXTURE_2D;
2043       break;
2044    case EGL_GL_TEXTURE_3D_KHR:
2045       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2046          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2047          return EGL_NO_IMAGE_KHR;
2048       }
2049
2050       depth = attrs.GLTextureZOffset;
2051       gl_target = GL_TEXTURE_3D;
2052       break;
2053    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2054    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2055    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2056    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2057    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2058    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2059       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2060          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2061          return EGL_NO_IMAGE_KHR;
2062       }
2063
2064       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2065       gl_target = GL_TEXTURE_CUBE_MAP;
2066       break;
2067    default:
2068       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2069       return EGL_NO_IMAGE_KHR;
2070    }
2071
2072    dri2_img = malloc(sizeof *dri2_img);
2073    if (!dri2_img) {
2074       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2075       return EGL_NO_IMAGE_KHR;
2076    }
2077
2078    _eglInitImage(&dri2_img->base, disp);
2079
2080    dri2_img->dri_image =
2081       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2082                                               gl_target,
2083                                               texture,
2084                                               depth,
2085                                               attrs.GLTextureLevel,
2086                                               &error,
2087                                               dri2_img);
2088    dri2_create_image_khr_texture_error(error);
2089
2090    if (!dri2_img->dri_image) {
2091       free(dri2_img);
2092       return EGL_NO_IMAGE_KHR;
2093    }
2094    return &dri2_img->base;
2095 }
2096
2097 static EGLBoolean
2098 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
2099                    EGLint attribute, EGLint *value)
2100 {
2101    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2102    if (!dri2_dpy->vtbl->query_surface)
2103       return _eglQuerySurface(drv, dpy, surf, attribute, value);
2104    return dri2_dpy->vtbl->query_surface(drv, dpy, surf, attribute, value);
2105 }
2106
2107 static struct wl_buffer*
2108 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *dpy,
2109                                       _EGLImage *img)
2110 {
2111    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2112    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, dpy, img);
2113 }
2114
2115 #ifdef HAVE_LIBDRM
2116 static _EGLImage *
2117 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2118                                   EGLClientBuffer buffer, const EGLint *attr_list)
2119 {
2120    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2121    EGLint format, name, pitch;
2122    _EGLImageAttribs attrs;
2123    __DRIimage *dri_image;
2124
2125    name = (EGLint) (uintptr_t) buffer;
2126
2127    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2128       return NULL;
2129
2130    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2131        attrs.DRMBufferStrideMESA <= 0) {
2132       _eglError(EGL_BAD_PARAMETER,
2133                 "bad width, height or stride");
2134       return NULL;
2135    }
2136
2137    switch (attrs.DRMBufferFormatMESA) {
2138    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2139       format = __DRI_IMAGE_FORMAT_ARGB8888;
2140       pitch = attrs.DRMBufferStrideMESA;
2141       break;
2142    default:
2143       _eglError(EGL_BAD_PARAMETER,
2144                 "dri2_create_image_khr: unsupported pixmap depth");
2145       return NULL;
2146    }
2147
2148    dri_image =
2149       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2150                                            attrs.Width,
2151                                            attrs.Height,
2152                                            format,
2153                                            name,
2154                                            pitch,
2155                                            NULL);
2156
2157    return dri2_create_image_from_dri(disp, dri_image);
2158 }
2159
2160 static EGLBoolean
2161 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2162 {
2163    /**
2164      * The spec says:
2165      *
2166      * "Required attributes and their values are as follows:
2167      *
2168      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2169      *
2170      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2171      *    by drm_fourcc.h and used as the pixel_format parameter of the
2172      *    drm_mode_fb_cmd2 ioctl."
2173      *
2174      * and
2175      *
2176      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2177      *    incomplete, EGL_BAD_PARAMETER is generated."
2178      */
2179    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2180        !attrs->DMABufFourCC.IsPresent)
2181       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2182
2183    /**
2184     * Also:
2185     *
2186     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2187     *  specified for a plane's pitch or offset isn't supported by EGL,
2188     *  EGL_BAD_ACCESS is generated."
2189     */
2190    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2191       if (attrs->DMABufPlanePitches[i].IsPresent &&
2192           attrs->DMABufPlanePitches[i].Value <= 0)
2193          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2194    }
2195
2196    /**
2197     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2198     * attribute values may be given.
2199     *
2200     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2201     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2202     */
2203    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2204       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2205           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2206          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2207    }
2208
2209    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2210     * mandate it, we only accept the same modifier across all planes. */
2211    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2212       if (attrs->DMABufPlaneFds[i].IsPresent) {
2213          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2214                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2215              (attrs->DMABufPlaneModifiersLo[0].Value !=
2216                attrs->DMABufPlaneModifiersLo[i].Value) ||
2217              (attrs->DMABufPlaneModifiersHi[0].Value !=
2218                attrs->DMABufPlaneModifiersHi[i].Value))
2219             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2220       }
2221    }
2222
2223    return EGL_TRUE;
2224 }
2225
2226 /* Returns the total number of file descriptors. Zero indicates an error. */
2227 static unsigned
2228 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2229 {
2230    unsigned plane_n;
2231
2232    switch (attrs->DMABufFourCC.Value) {
2233    case DRM_FORMAT_R8:
2234    case DRM_FORMAT_RG88:
2235    case DRM_FORMAT_GR88:
2236    case DRM_FORMAT_R16:
2237    case DRM_FORMAT_GR1616:
2238    case DRM_FORMAT_RGB332:
2239    case DRM_FORMAT_BGR233:
2240    case DRM_FORMAT_XRGB4444:
2241    case DRM_FORMAT_XBGR4444:
2242    case DRM_FORMAT_RGBX4444:
2243    case DRM_FORMAT_BGRX4444:
2244    case DRM_FORMAT_ARGB4444:
2245    case DRM_FORMAT_ABGR4444:
2246    case DRM_FORMAT_RGBA4444:
2247    case DRM_FORMAT_BGRA4444:
2248    case DRM_FORMAT_XRGB1555:
2249    case DRM_FORMAT_XBGR1555:
2250    case DRM_FORMAT_RGBX5551:
2251    case DRM_FORMAT_BGRX5551:
2252    case DRM_FORMAT_ARGB1555:
2253    case DRM_FORMAT_ABGR1555:
2254    case DRM_FORMAT_RGBA5551:
2255    case DRM_FORMAT_BGRA5551:
2256    case DRM_FORMAT_RGB565:
2257    case DRM_FORMAT_BGR565:
2258    case DRM_FORMAT_RGB888:
2259    case DRM_FORMAT_BGR888:
2260    case DRM_FORMAT_XRGB8888:
2261    case DRM_FORMAT_XBGR8888:
2262    case DRM_FORMAT_RGBX8888:
2263    case DRM_FORMAT_BGRX8888:
2264    case DRM_FORMAT_ARGB8888:
2265    case DRM_FORMAT_ABGR8888:
2266    case DRM_FORMAT_RGBA8888:
2267    case DRM_FORMAT_BGRA8888:
2268    case DRM_FORMAT_XRGB2101010:
2269    case DRM_FORMAT_XBGR2101010:
2270    case DRM_FORMAT_RGBX1010102:
2271    case DRM_FORMAT_BGRX1010102:
2272    case DRM_FORMAT_ARGB2101010:
2273    case DRM_FORMAT_ABGR2101010:
2274    case DRM_FORMAT_RGBA1010102:
2275    case DRM_FORMAT_BGRA1010102:
2276    case DRM_FORMAT_YUYV:
2277    case DRM_FORMAT_YVYU:
2278    case DRM_FORMAT_UYVY:
2279    case DRM_FORMAT_VYUY:
2280       plane_n = 1;
2281       break;
2282    case DRM_FORMAT_NV12:
2283    case DRM_FORMAT_NV21:
2284    case DRM_FORMAT_NV16:
2285    case DRM_FORMAT_NV61:
2286       plane_n = 2;
2287       break;
2288    case DRM_FORMAT_YUV410:
2289    case DRM_FORMAT_YVU410:
2290    case DRM_FORMAT_YUV411:
2291    case DRM_FORMAT_YVU411:
2292    case DRM_FORMAT_YUV420:
2293    case DRM_FORMAT_YVU420:
2294    case DRM_FORMAT_YUV422:
2295    case DRM_FORMAT_YVU422:
2296    case DRM_FORMAT_YUV444:
2297    case DRM_FORMAT_YVU444:
2298       plane_n = 3;
2299       break;
2300    default:
2301       _eglError(EGL_BAD_ATTRIBUTE, "invalid format");
2302       return 0;
2303    }
2304
2305    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2306       /**
2307        * The modifiers extension spec says:
2308        *
2309        * "Modifiers may modify any attribute of a buffer import, including
2310        *  but not limited to adding extra planes to a format which
2311        *  otherwise does not have those planes. As an example, a modifier
2312        *  may add a plane for an external compression buffer to a
2313        *  single-plane format. The exact meaning and effect of any
2314        *  modifier is canonically defined by drm_fourcc.h, not as part of
2315        *  this extension."
2316        */
2317       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2318           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2319          plane_n = i + 1;
2320       }
2321    }
2322
2323    /**
2324      * The spec says:
2325      *
2326      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2327      *    incomplete, EGL_BAD_PARAMETER is generated."
2328      */
2329    for (unsigned i = 0; i < plane_n; ++i) {
2330       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2331           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2332           !attrs->DMABufPlanePitches[i].IsPresent) {
2333          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2334          return 0;
2335       }
2336    }
2337
2338    /**
2339     * The spec also says:
2340     *
2341     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2342     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2343     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2344     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2345     */
2346    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2347       if (attrs->DMABufPlaneFds[i].IsPresent ||
2348           attrs->DMABufPlaneOffsets[i].IsPresent ||
2349           attrs->DMABufPlanePitches[i].IsPresent) {
2350          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2351          return 0;
2352       }
2353    }
2354
2355    return plane_n;
2356 }
2357
2358 static EGLBoolean
2359 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2360                             EGLint max, EGLint *formats, EGLint *count)
2361 {
2362    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2363    if (max < 0 || (max > 0 && formats == NULL))
2364       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2365
2366    if (dri2_dpy->image->base.version < 15 ||
2367        dri2_dpy->image->queryDmaBufFormats == NULL)
2368       return EGL_FALSE;
2369
2370    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2371                                             formats, count))
2372       return EGL_FALSE;
2373
2374    return EGL_TRUE;
2375 }
2376
2377 static EGLBoolean
2378 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2379                              EGLint max, EGLuint64KHR *modifiers,
2380                              EGLBoolean *external_only, EGLint *count)
2381 {
2382    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2383
2384    if (max < 0)
2385       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2386
2387    if (max > 0 && modifiers == NULL)
2388       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2389
2390    if (dri2_dpy->image->base.version < 15 ||
2391        dri2_dpy->image->queryDmaBufModifiers == NULL)
2392       return EGL_FALSE;
2393
2394    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2395                                              max, modifiers,
2396                                              (unsigned int *) external_only,
2397                                              count) == false)
2398       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2399
2400    return EGL_TRUE;
2401 }
2402
2403 /**
2404  * The spec says:
2405  *
2406  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2407  *  EGL will take a reference to the dma_buf(s) which it will release at any
2408  *  time while the EGLDisplay is initialized. It is the responsibility of the
2409  *  application to close the dma_buf file descriptors."
2410  *
2411  * Therefore we must never close or otherwise modify the file descriptors.
2412  */
2413 _EGLImage *
2414 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2415                           EGLClientBuffer buffer, const EGLint *attr_list)
2416 {
2417    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2418    _EGLImage *res;
2419    _EGLImageAttribs attrs;
2420    __DRIimage *dri_image;
2421    unsigned num_fds;
2422    int fds[DMA_BUF_MAX_PLANES];
2423    int pitches[DMA_BUF_MAX_PLANES];
2424    int offsets[DMA_BUF_MAX_PLANES];
2425    uint64_t modifier;
2426    bool has_modifier = false;
2427    unsigned error;
2428
2429    /**
2430     * The spec says:
2431     *
2432     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2433     *     error EGL_BAD_PARAMETER is generated."
2434     */
2435    if (buffer != NULL) {
2436       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2437       return NULL;
2438    }
2439
2440    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2441       return NULL;
2442
2443    if (!dri2_check_dma_buf_attribs(&attrs))
2444       return NULL;
2445
2446    num_fds = dri2_check_dma_buf_format(&attrs);
2447    if (!num_fds)
2448       return NULL;
2449
2450    for (unsigned i = 0; i < num_fds; ++i) {
2451       fds[i] = attrs.DMABufPlaneFds[i].Value;
2452       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2453       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2454    }
2455
2456    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2457     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2458     * attrs.DMABufPlaneModifiersHi[0] */
2459    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2460       modifier = (uint64_t) attrs.DMABufPlaneModifiersHi[0].Value << 32;
2461       modifier |= (uint64_t) (attrs.DMABufPlaneModifiersLo[0].Value & 0xffffffff);
2462       has_modifier = true;
2463    }
2464
2465    if (has_modifier) {
2466       if (dri2_dpy->image->base.version < 15 ||
2467           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2468          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2469          return EGL_NO_IMAGE_KHR;
2470       }
2471       dri_image =
2472          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2473             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2474             modifier, fds, num_fds, pitches, offsets,
2475             attrs.DMABufYuvColorSpaceHint.Value,
2476             attrs.DMABufSampleRangeHint.Value,
2477             attrs.DMABufChromaHorizontalSiting.Value,
2478             attrs.DMABufChromaVerticalSiting.Value,
2479             &error,
2480             NULL);
2481    }
2482    else {
2483       dri_image =
2484          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2485             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2486             fds, num_fds, pitches, offsets,
2487             attrs.DMABufYuvColorSpaceHint.Value,
2488             attrs.DMABufSampleRangeHint.Value,
2489             attrs.DMABufChromaHorizontalSiting.Value,
2490             attrs.DMABufChromaVerticalSiting.Value,
2491             &error,
2492             NULL);
2493    }
2494    dri2_create_image_khr_texture_error(error);
2495
2496    if (!dri_image)
2497       return EGL_NO_IMAGE_KHR;
2498
2499    res = dri2_create_image_from_dri(disp, dri_image);
2500
2501    return res;
2502 }
2503 static _EGLImage *
2504 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2505                            const EGLint *attr_list)
2506 {
2507    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2508    struct dri2_egl_image *dri2_img;
2509    _EGLImageAttribs attrs;
2510    unsigned int dri_use, valid_mask;
2511    int format;
2512
2513    (void) drv;
2514
2515    if (!attr_list) {
2516       _eglError(EGL_BAD_PARAMETER, __func__);
2517       return EGL_NO_IMAGE_KHR;
2518    }
2519
2520    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2521       return EGL_NO_IMAGE_KHR;
2522
2523    if (attrs.Width <= 0 || attrs.Height <= 0) {
2524       _eglError(EGL_BAD_PARAMETER, __func__);
2525       return EGL_NO_IMAGE_KHR;
2526    }
2527
2528    switch (attrs.DRMBufferFormatMESA) {
2529    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2530       format = __DRI_IMAGE_FORMAT_ARGB8888;
2531       break;
2532    default:
2533       _eglError(EGL_BAD_PARAMETER, __func__);
2534       return EGL_NO_IMAGE_KHR;
2535    }
2536
2537    valid_mask =
2538       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2539       EGL_DRM_BUFFER_USE_SHARE_MESA |
2540       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2541    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2542       _eglError(EGL_BAD_PARAMETER, __func__);
2543       return EGL_NO_IMAGE_KHR;
2544    }
2545
2546    dri_use = 0;
2547    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2548       dri_use |= __DRI_IMAGE_USE_SHARE;
2549    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2550       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2551    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2552       dri_use |= __DRI_IMAGE_USE_CURSOR;
2553
2554    dri2_img = malloc(sizeof *dri2_img);
2555    if (!dri2_img) {
2556       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2557       return EGL_NO_IMAGE_KHR;
2558    }
2559
2560    _eglInitImage(&dri2_img->base, disp);
2561
2562    dri2_img->dri_image =
2563       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2564                                    attrs.Width, attrs.Height,
2565                                    format, dri_use, dri2_img);
2566    if (dri2_img->dri_image == NULL) {
2567       free(dri2_img);
2568        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2569       return EGL_NO_IMAGE_KHR;
2570    }
2571
2572    return &dri2_img->base;
2573 }
2574
2575 static EGLBoolean
2576 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2577                           EGLint *name, EGLint *handle, EGLint *stride)
2578 {
2579    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2580    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2581
2582    (void) drv;
2583
2584    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2585                                             __DRI_IMAGE_ATTRIB_NAME, name))
2586       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2587
2588    if (handle)
2589       dri2_dpy->image->queryImage(dri2_img->dri_image,
2590                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2591
2592    if (stride)
2593       dri2_dpy->image->queryImage(dri2_img->dri_image,
2594                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2595
2596    return EGL_TRUE;
2597 }
2598
2599 static EGLBoolean
2600 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2601                                      _EGLImage *img,
2602                                      EGLint *fourcc, EGLint *nplanes,
2603                                      EGLuint64KHR *modifiers)
2604 {
2605    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2606    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2607
2608    (void) drv;
2609
2610
2611    if (nplanes)
2612       dri2_dpy->image->queryImage(dri2_img->dri_image,
2613                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2614    if (fourcc)
2615       dri2_dpy->image->queryImage(dri2_img->dri_image,
2616                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2617
2618    if (modifiers)
2619       *modifiers = 0;
2620
2621    return EGL_TRUE;
2622 }
2623
2624 static EGLBoolean
2625 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2626                                int *fds, EGLint *strides, EGLint *offsets)
2627 {
2628    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2629    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2630
2631    (void) drv;
2632
2633    /* rework later to provide multiple fds/strides/offsets */
2634    if (fds)
2635       dri2_dpy->image->queryImage(dri2_img->dri_image,
2636                                   __DRI_IMAGE_ATTRIB_FD, fds);
2637
2638    if (strides)
2639       dri2_dpy->image->queryImage(dri2_img->dri_image,
2640                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2641
2642    if (offsets) {
2643       int img_offset;
2644       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2645                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2646       if (ret)
2647          offsets[0] = img_offset;
2648       else
2649          offsets[0] = 0;
2650    }
2651
2652    return EGL_TRUE;
2653 }
2654
2655 #endif
2656
2657 _EGLImage *
2658 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2659                       _EGLContext *ctx, EGLenum target,
2660                       EGLClientBuffer buffer, const EGLint *attr_list)
2661 {
2662    (void) drv;
2663
2664    switch (target) {
2665    case EGL_GL_TEXTURE_2D_KHR:
2666    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2667    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2668    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2669    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2670    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2671    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2672    case EGL_GL_TEXTURE_3D_KHR:
2673       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2674    case EGL_GL_RENDERBUFFER_KHR:
2675       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2676 #ifdef HAVE_LIBDRM
2677    case EGL_DRM_BUFFER_MESA:
2678       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2679    case EGL_LINUX_DMA_BUF_EXT:
2680       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2681 #endif
2682 #ifdef HAVE_WAYLAND_PLATFORM
2683    case EGL_WAYLAND_BUFFER_WL:
2684       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2685 #endif
2686    default:
2687       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2688       return EGL_NO_IMAGE_KHR;
2689    }
2690 }
2691
2692 static EGLBoolean
2693 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2694 {
2695    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2696    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2697
2698    (void) drv;
2699
2700    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2701    free(dri2_img);
2702
2703    return EGL_TRUE;
2704 }
2705
2706 #ifdef HAVE_WAYLAND_PLATFORM
2707
2708 static void
2709 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2710                          struct wl_drm_buffer *buffer)
2711 {
2712    _EGLDisplay *disp = user_data;
2713    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2714    __DRIimage *img;
2715    int dri_components = 0;
2716
2717    if (fd == -1)
2718       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2719                                                   buffer->width,
2720                                                   buffer->height,
2721                                                   buffer->format,
2722                                                   (int*)&name, 1,
2723                                                   buffer->stride,
2724                                                   buffer->offset,
2725                                                   NULL);
2726    else
2727       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2728                                                 buffer->width,
2729                                                 buffer->height,
2730                                                 buffer->format,
2731                                                 &fd, 1,
2732                                                 buffer->stride,
2733                                                 buffer->offset,
2734                                                 NULL);
2735
2736    if (img == NULL)
2737       return;
2738
2739    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2740
2741    buffer->driver_format = NULL;
2742    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2743       if (wl_drm_components[i].dri_components == dri_components)
2744          buffer->driver_format = &wl_drm_components[i];
2745
2746    if (buffer->driver_format == NULL)
2747       dri2_dpy->image->destroyImage(img);
2748    else
2749       buffer->driver_buffer = img;
2750 }
2751
2752 static void
2753 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2754 {
2755    _EGLDisplay *disp = user_data;
2756    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2757
2758    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2759 }
2760
2761 static EGLBoolean
2762 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2763                              struct wl_display *wl_dpy)
2764 {
2765    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2766    const struct wayland_drm_callbacks wl_drm_callbacks = {
2767       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2768       .reference_buffer = dri2_wl_reference_buffer,
2769       .release_buffer = dri2_wl_release_buffer
2770    };
2771    int flags = 0;
2772    uint64_t cap;
2773
2774    (void) drv;
2775
2776    if (dri2_dpy->wl_server_drm)
2777            return EGL_FALSE;
2778
2779    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2780        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2781        dri2_dpy->image->base.version >= 7 &&
2782        dri2_dpy->image->createImageFromFds != NULL)
2783       flags |= WAYLAND_DRM_PRIME;
2784
2785    dri2_dpy->wl_server_drm =
2786            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2787                             &wl_drm_callbacks, disp, flags);
2788
2789    if (!dri2_dpy->wl_server_drm)
2790            return EGL_FALSE;
2791
2792 #ifdef HAVE_DRM_PLATFORM
2793    /* We have to share the wl_drm instance with gbm, so gbm can convert
2794     * wl_buffers to gbm bos. */
2795    if (dri2_dpy->gbm_dri)
2796       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2797 #endif
2798
2799    return EGL_TRUE;
2800 }
2801
2802 static EGLBoolean
2803 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2804                                struct wl_display *wl_dpy)
2805 {
2806    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2807
2808    (void) drv;
2809
2810    if (!dri2_dpy->wl_server_drm)
2811            return EGL_FALSE;
2812
2813    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2814    dri2_dpy->wl_server_drm = NULL;
2815
2816    return EGL_TRUE;
2817 }
2818
2819 static EGLBoolean
2820 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2821                              struct wl_resource *buffer_resource,
2822                              EGLint attribute, EGLint *value)
2823 {
2824    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2825    struct wl_drm_buffer *buffer;
2826    const struct wl_drm_components_descriptor *format;
2827
2828    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2829    if (!buffer)
2830       return EGL_FALSE;
2831
2832    format = buffer->driver_format;
2833    switch (attribute) {
2834    case EGL_TEXTURE_FORMAT:
2835       *value = format->components;
2836       return EGL_TRUE;
2837    case EGL_WIDTH:
2838       *value = buffer->width;
2839       return EGL_TRUE;
2840    case EGL_HEIGHT:
2841       *value = buffer->height;
2842       return EGL_TRUE;
2843    }
2844
2845    return EGL_FALSE;
2846 }
2847 #endif
2848
2849 static void
2850 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2851 {
2852    p_atomic_inc(&sync->refcount);
2853 }
2854
2855 static void
2856 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2857                     struct dri2_egl_sync *dri2_sync)
2858 {
2859    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2860       switch (dri2_sync->base.Type) {
2861       case EGL_SYNC_REUSABLE_KHR:
2862          cnd_destroy(&dri2_sync->cond);
2863          break;
2864       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2865          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2866             close(dri2_sync->base.SyncFd);
2867          break;
2868       default:
2869          break;
2870       }
2871
2872       if (dri2_sync->fence)
2873          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2874
2875       free(dri2_sync);
2876    }
2877 }
2878
2879 static _EGLSync *
2880 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
2881                  EGLenum type, const EGLAttrib *attrib_list)
2882 {
2883    _EGLContext *ctx = _eglGetCurrentContext();
2884    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2885    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2886    struct dri2_egl_sync *dri2_sync;
2887    EGLint ret;
2888    pthread_condattr_t attr;
2889
2890    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2891    if (!dri2_sync) {
2892       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2893       return NULL;
2894    }
2895
2896    if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
2897       free(dri2_sync);
2898       return NULL;
2899    }
2900
2901    switch (type) {
2902    case EGL_SYNC_FENCE_KHR:
2903       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2904       if (!dri2_sync->fence) {
2905          /* Why did it fail? DRI doesn't return an error code, so we emit
2906           * a generic EGL error that doesn't communicate user error.
2907           */
2908          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2909          free(dri2_sync);
2910          return NULL;
2911       }
2912       break;
2913
2914    case EGL_SYNC_CL_EVENT_KHR:
2915       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2916                                  dri2_dpy->dri_screen,
2917                                  dri2_sync->base.CLEvent);
2918       /* this can only happen if the cl_event passed in is invalid. */
2919       if (!dri2_sync->fence) {
2920          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2921          free(dri2_sync);
2922          return NULL;
2923       }
2924
2925       /* the initial status must be "signaled" if the cl_event is signaled */
2926       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2927                                             dri2_sync->fence, 0, 0))
2928          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2929       break;
2930
2931    case EGL_SYNC_REUSABLE_KHR:
2932       /* intialize attr */
2933       ret = pthread_condattr_init(&attr);
2934
2935       if (ret) {
2936          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2937          free(dri2_sync);
2938          return NULL;
2939       }
2940
2941       /* change clock attribute to CLOCK_MONOTONIC */
2942       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2943
2944       if (ret) {
2945          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2946          free(dri2_sync);
2947          return NULL;
2948       }
2949
2950       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2951
2952       if (ret) {
2953          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2954          free(dri2_sync);
2955          return NULL;
2956       }
2957
2958       /* initial status of reusable sync must be "unsignaled" */
2959       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2960       break;
2961
2962    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2963       if (dri2_dpy->fence->create_fence_fd) {
2964          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2965                                     dri2_ctx->dri_context,
2966                                     dri2_sync->base.SyncFd);
2967       }
2968       if (!dri2_sync->fence) {
2969          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2970          free(dri2_sync);
2971          return NULL;
2972       }
2973       break;
2974    }
2975
2976    p_atomic_set(&dri2_sync->refcount, 1);
2977    return &dri2_sync->base;
2978 }
2979
2980 static EGLBoolean
2981 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
2982 {
2983    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2984    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
2985    EGLint ret = EGL_TRUE;
2986    EGLint err;
2987
2988    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
2989     * then unlock all threads possibly blocked by the reusable sync before
2990     * destroying it.
2991     */
2992    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
2993        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
2994       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2995       /* unblock all threads currently blocked by sync */
2996       err = cnd_broadcast(&dri2_sync->cond);
2997
2998       if (err) {
2999          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3000          ret = EGL_FALSE;
3001       }
3002    }
3003
3004    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3005
3006    return ret;
3007 }
3008
3009 static EGLint
3010 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3011 {
3012    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3013    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3014
3015    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3016
3017    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3018       /* try to retrieve the actual native fence fd.. if rendering is
3019        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3020        */
3021       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3022                                                    dri2_sync->fence);
3023    }
3024
3025    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3026       /* if native fence fd still not created, return an error: */
3027       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3028       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3029    }
3030
3031    return dup(sync->SyncFd);
3032 }
3033
3034 static void
3035 dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *dpy,
3036                           EGLSetBlobFuncANDROID set,
3037                           EGLGetBlobFuncANDROID get)
3038 {
3039    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3040    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3041                                    dpy->BlobCacheSet,
3042                                    dpy->BlobCacheGet);
3043 }
3044
3045 static EGLint
3046 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3047                       EGLint flags, EGLTime timeout)
3048 {
3049    _EGLContext *ctx = _eglGetCurrentContext();
3050    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3051    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3052    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3053    unsigned wait_flags = 0;
3054
3055    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3056
3057    /* The EGL_KHR_fence_sync spec states:
3058     *
3059     *    "If no context is current for the bound API,
3060     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3061     */
3062    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3063       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3064
3065    /* the sync object should take a reference while waiting */
3066    dri2_egl_ref_sync(dri2_sync);
3067
3068    switch (sync->Type) {
3069    case EGL_SYNC_FENCE_KHR:
3070    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3071    case EGL_SYNC_CL_EVENT_KHR:
3072       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3073                                          dri2_sync->fence, wait_flags,
3074                                          timeout))
3075          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3076       else
3077          ret = EGL_TIMEOUT_EXPIRED_KHR;
3078       break;
3079
3080    case EGL_SYNC_REUSABLE_KHR:
3081       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3082           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3083          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3084          dri2_gl_flush();
3085       }
3086
3087       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3088       if (timeout == EGL_FOREVER_KHR) {
3089          mtx_lock(&dri2_sync->mutex);
3090          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3091          mtx_unlock(&dri2_sync->mutex);
3092       } else {
3093          /* if reusable sync has not been yet signaled */
3094          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3095             /* timespecs for cnd_timedwait */
3096             struct timespec current;
3097             struct timespec expire;
3098
3099             /* We override the clock to monotonic when creating the condition
3100              * variable. */
3101             clock_gettime(CLOCK_MONOTONIC, &current);
3102
3103             /* calculating when to expire */
3104             expire.tv_nsec = timeout % 1000000000L;
3105             expire.tv_sec = timeout / 1000000000L;
3106
3107             expire.tv_nsec += current.tv_nsec;
3108             expire.tv_sec += current.tv_sec;
3109
3110             /* expire.nsec now is a number between 0 and 1999999998 */
3111             if (expire.tv_nsec > 999999999L) {
3112                expire.tv_sec++;
3113                expire.tv_nsec -= 1000000000L;
3114             }
3115
3116             mtx_lock(&dri2_sync->mutex);
3117             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3118             mtx_unlock(&dri2_sync->mutex);
3119
3120             if (ret == thrd_busy) {
3121                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3122                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3123                } else {
3124                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3125                   ret = EGL_FALSE;
3126                }
3127             }
3128          }
3129       }
3130       break;
3131   }
3132   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3133
3134   return ret;
3135 }
3136
3137 static EGLBoolean
3138 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3139                       EGLenum mode)
3140 {
3141    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3142    EGLint ret;
3143
3144    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3145       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3146
3147    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3148       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3149
3150    dri2_sync->base.SyncStatus = mode;
3151
3152    if (mode == EGL_SIGNALED_KHR) {
3153       ret = cnd_broadcast(&dri2_sync->cond);
3154
3155       /* fail to broadcast */
3156       if (ret)
3157          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3158    }
3159
3160    return EGL_TRUE;
3161 }
3162
3163 static EGLint
3164 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3165 {
3166    _EGLContext *ctx = _eglGetCurrentContext();
3167    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3168    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3169    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3170
3171    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3172                                      dri2_sync->fence, 0);
3173    return EGL_TRUE;
3174 }
3175
3176 static int
3177 dri2_interop_query_device_info(_EGLDisplay *dpy, _EGLContext *ctx,
3178                                struct mesa_glinterop_device_info *out)
3179 {
3180    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3181    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3182
3183    if (!dri2_dpy->interop)
3184       return MESA_GLINTEROP_UNSUPPORTED;
3185
3186    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3187 }
3188
3189 static int
3190 dri2_interop_export_object(_EGLDisplay *dpy, _EGLContext *ctx,
3191                            struct mesa_glinterop_export_in *in,
3192                            struct mesa_glinterop_export_out *out)
3193 {
3194    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3195    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3196
3197    if (!dri2_dpy->interop)
3198       return MESA_GLINTEROP_UNSUPPORTED;
3199
3200    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3201 }
3202
3203 /**
3204  * This is the main entrypoint into the driver, called by libEGL.
3205  * Create a new _EGLDriver object and init its dispatch table.
3206  */
3207 _EGLDriver *
3208 _eglBuiltInDriver(void)
3209 {
3210    _EGLDriver *dri2_drv = calloc(1, sizeof *dri2_drv);
3211    if (!dri2_drv)
3212       return NULL;
3213
3214    _eglInitDriverFallbacks(dri2_drv);
3215    dri2_drv->API.Initialize = dri2_initialize;
3216    dri2_drv->API.Terminate = dri2_terminate;
3217    dri2_drv->API.CreateContext = dri2_create_context;
3218    dri2_drv->API.DestroyContext = dri2_destroy_context;
3219    dri2_drv->API.MakeCurrent = dri2_make_current;
3220    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3221    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3222    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3223    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3224    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3225    dri2_drv->API.WaitClient = dri2_wait_client;
3226    dri2_drv->API.WaitNative = dri2_wait_native;
3227    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3228    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3229    dri2_drv->API.SwapInterval = dri2_swap_interval;
3230    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3231    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3232    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3233    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3234    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3235    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3236    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3237    dri2_drv->API.CreateImageKHR = dri2_create_image;
3238    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3239    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3240    dri2_drv->API.QuerySurface = dri2_query_surface;
3241 #ifdef HAVE_LIBDRM
3242    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3243    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3244    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3245    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3246    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3247    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3248 #endif
3249 #ifdef HAVE_WAYLAND_PLATFORM
3250    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3251    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3252    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3253 #endif
3254    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3255    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3256    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3257    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3258    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3259    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3260    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3261    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3262    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3263    dri2_drv->API.SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs;
3264
3265    dri2_drv->Name = "DRI2";
3266
3267    return dri2_drv;
3268 }