src/egl/drivers/dri2/egl_dri2.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdbool.h>
  29 #include <stdint.h>
  30 #include <stdbool.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdio.h>
  34 #include <limits.h>
  35 #include <dlfcn.h>
  36 #include <fcntl.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <c11/threads.h>
  40 #include <time.h>
  41 #ifdef HAVE_LIBDRM
  42 #include <xf86drm.h>
  43 #include <drm_fourcc.h>
  44 #endif
  45 #include <GL/gl.h>
  46 #include <GL/internal/dri_interface.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49
  50 #ifdef HAVE_WAYLAND_PLATFORM
  51 #include "wayland-drm.h"
  52 #include "wayland-drm-client-protocol.h"
  53 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  54 #endif
  55
  56 #ifdef HAVE_X11_PLATFORM
  57 #include "X11/Xlibint.h"
  58 #endif
  59
  60 #include "egl_dri2.h"
  61 #include "GL/mesa_glinterop.h"
  62 #include "loader/loader.h"
  63 #include "util/u_atomic.h"
  64 #include "util/u_vector.h"
  65 #include "mapi/glapi/glapi.h"
  66
  67 /* The kernel header drm_fourcc.h defines the DRM formats below.  We duplicate
  68  * some of the definitions here so that building Mesa won't bleeding-edge
  69  * kernel headers.
  70  */
  71 #ifndef DRM_FORMAT_R8
  72 #define DRM_FORMAT_R8            fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
  73 #endif
  74
  75 #ifndef DRM_FORMAT_RG88
  76 #define DRM_FORMAT_RG88          fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
  77 #endif
  78
  79 #ifndef DRM_FORMAT_GR88
  80 #define DRM_FORMAT_GR88          fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
  81 #endif
  82
  83 #ifndef DRM_FORMAT_R16
  84 #define DRM_FORMAT_R16           fourcc_code('R', '1', '6', ' ') /* [15:0] R 16 little endian */
  85 #endif
  86
  87 #ifndef DRM_FORMAT_GR1616
  88 #define DRM_FORMAT_GR1616        fourcc_code('G', 'R', '3', '2') /* [31:0] R:G 16:16 little endian */
  89 #endif
  90
  91 #ifndef DRM_FORMAT_MOD_INVALID
  92 #define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
  93 #endif
  94
  95 #define NUM_ATTRIBS 12
  96
  97 static void
  98 dri_set_background_context(void *loaderPrivate)
  99 {
 100    _EGLContext *ctx = _eglGetCurrentContext();
 101    _EGLThreadInfo *t = _eglGetCurrentThread();
 102
 103    _eglBindContextToThread(ctx, t);
 104 }
 105
 106 static void
 107 dri2_gl_flush()
 108 {
 109    static void (*glFlush)(void);
 110    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 111
 112    mtx_lock(&glFlushMutex);
 113    if (!glFlush)
 114       glFlush = _glapi_get_proc_address("glFlush");
 115    mtx_unlock(&glFlushMutex);
 116
 117    /* if glFlush is not available things are horribly broken */
 118    if (!glFlush) {
 119       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 120       return;
 121    }
 122
 123    glFlush();
 124 }
 125
 126 static GLboolean
 127 dri_is_thread_safe(void *loaderPrivate)
 128 {
 129    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 130    _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 131
 132 #ifdef HAVE_X11_PLATFORM
 133    Display *xdpy = (Display*)display->PlatformDisplay;
 134
 135    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 136     * platform
 137     *
 138     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 139     * It wll be NULL if XInitThreads wasn't called.
 140     */
 141    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 142       return false;
 143 #endif
 144
 145 #ifdef HAVE_WAYLAND_PLATFORM
 146    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 147       return true;
 148 #endif
 149
 150    return true;
 151 }
 152
 153 const __DRIbackgroundCallableExtension background_callable_extension = {
 154    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 155
 156    .setBackgroundContext = dri_set_background_context,
 157    .isThreadSafe         = dri_is_thread_safe,
 158 };
 159
 160 const __DRIuseInvalidateExtension use_invalidate = {
 161    .base = { __DRI_USE_INVALIDATE, 1 }
 162 };
 163
 164 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 165    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 166    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 167    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,
 168    [__DRI_ATTRIB_GREEN_SIZE]            = EGL_GREEN_SIZE,
 169    [__DRI_ATTRIB_BLUE_SIZE]             = EGL_BLUE_SIZE,
 170    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 171    [__DRI_ATTRIB_ALPHA_SIZE]            = EGL_ALPHA_SIZE,
 172    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 173    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 174    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 175    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 176    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 177    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 178    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 179    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 180    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 181    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 182 };
 183
 184 const __DRIconfig *
 185 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 186                     EGLenum colorspace)
 187 {
 188    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 189    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 190
 191    return conf->dri_config[double_buffer][srgb];
 192 }
 193
 194 static EGLBoolean
 195 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 196 {
 197    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 198       return EGL_FALSE;
 199
 200    if (!_eglMatchConfig(conf, criteria))
 201       return EGL_FALSE;
 202
 203    return EGL_TRUE;
 204 }
 205
 206 struct dri2_egl_config *
 207 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 208                 EGLint surface_type, const EGLint *attr_list,
 209                 const unsigned int *rgba_masks)
 210 {
 211    struct dri2_egl_config *conf;
 212    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 213    _EGLConfig base;
 214    unsigned int attrib, value, double_buffer;
 215    bool srgb = false;
 216    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 217    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 218    _EGLConfig *matching_config;
 219    EGLint num_configs = 0;
 220    EGLint config_id;
 221
 222    _eglInitConfig(&base, disp, id);
 223
 224    double_buffer = 0;
 225    bind_to_texture_rgb = 0;
 226    bind_to_texture_rgba = 0;
 227
 228    for (int i = 0; dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib,
 229                                                      &value); ++i) {
 230       switch (attrib) {
 231       case __DRI_ATTRIB_RENDER_TYPE:
 232          if (value & __DRI_ATTRIB_RGBA_BIT)
 233             value = EGL_RGB_BUFFER;
 234          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 235             value = EGL_LUMINANCE_BUFFER;
 236          else
 237             return NULL;
 238          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 239          break;
 240
 241       case __DRI_ATTRIB_CONFIG_CAVEAT:
 242          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 243             value = EGL_NON_CONFORMANT_CONFIG;
 244          else if (value & __DRI_ATTRIB_SLOW_BIT)
 245             value = EGL_SLOW_CONFIG;
 246          else
 247             value = EGL_NONE;
 248          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 249          break;
 250
 251       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 252          bind_to_texture_rgb = value;
 253          break;
 254
 255       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 256          bind_to_texture_rgba = value;
 257          break;
 258
 259       case __DRI_ATTRIB_DOUBLE_BUFFER:
 260          double_buffer = value;
 261          break;
 262
 263       case __DRI_ATTRIB_RED_MASK:
 264          dri_masks[0] = value;
 265          break;
 266
 267       case __DRI_ATTRIB_GREEN_MASK:
 268          dri_masks[1] = value;
 269          break;
 270
 271       case __DRI_ATTRIB_BLUE_MASK:
 272          dri_masks[2] = value;
 273          break;
 274
 275       case __DRI_ATTRIB_ALPHA_MASK:
 276          dri_masks[3] = value;
 277          break;
 278
 279       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 280       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 281       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 282       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 283          /* Don't expose visuals with the accumulation buffer. */
 284          if (value > 0)
 285             return NULL;
 286          break;
 287
 288       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 289          srgb = value != 0;
 290          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 291             return NULL;
 292          break;
 293
 294       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 295          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 296                           _EGL_MAX_PBUFFER_WIDTH);
 297          break;
 298       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 299          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 300                           _EGL_MAX_PBUFFER_HEIGHT);
 301          break;
 302
 303       default:
 304          key = dri2_to_egl_attribute_map[attrib];
 305          if (key != 0)
 306             _eglSetConfigKey(&base, key, value);
 307          break;
 308       }
 309    }
 310
 311    if (attr_list)
 312       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 313          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 314
 315    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 316       return NULL;
 317
 318    base.NativeRenderable = EGL_TRUE;
 319
 320    base.SurfaceType = surface_type;
 321    if (surface_type & (EGL_PBUFFER_BIT |
 322        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 323       base.BindToTextureRGB = bind_to_texture_rgb;
 324       if (base.AlphaSize > 0)
 325          base.BindToTextureRGBA = bind_to_texture_rgba;
 326    }
 327
 328    base.RenderableType = disp->ClientAPIs;
 329    base.Conformant = disp->ClientAPIs;
 330
 331    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 332    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 333
 334    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 335       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 336       return NULL;
 337    }
 338
 339    config_id = base.ConfigID;
 340    base.ConfigID    = EGL_DONT_CARE;
 341    base.SurfaceType = EGL_DONT_CARE;
 342    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 343                                  (_EGLArrayForEach) dri2_match_config, &base);
 344
 345    if (num_configs == 1) {
 346       conf = (struct dri2_egl_config *) matching_config;
 347
 348       if (!conf->dri_config[double_buffer][srgb])
 349          conf->dri_config[double_buffer][srgb] = dri_config;
 350       else
 351          /* a similar config type is already added (unlikely) => discard */
 352          return NULL;
 353    }
 354    else if (num_configs == 0) {
 355       conf = calloc(1, sizeof *conf);
 356       if (conf == NULL)
 357          return NULL;
 358
 359       conf->dri_config[double_buffer][srgb] = dri_config;
 360
 361       memcpy(&conf->base, &base, sizeof base);
 362       conf->base.SurfaceType = 0;
 363       conf->base.ConfigID = config_id;
 364
 365       _eglLinkConfig(&conf->base);
 366    }
 367    else {
 368       assert(0);
 369       return NULL;
 370    }
 371
 372    if (double_buffer) {
 373       surface_type &= ~EGL_PIXMAP_BIT;
 374    }
 375
 376    /* No support for pbuffer + MSAA for now.
 377     *
 378     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 379     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 380     */
 381    if (base.Samples) {
 382       surface_type &= ~EGL_PBUFFER_BIT;
 383    }
 384
 385    conf->base.SurfaceType |= surface_type;
 386
 387    return conf;
 388 }
 389
 390 __DRIimage *
 391 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 392 {
 393    _EGLDisplay *disp = data;
 394    struct dri2_egl_image *dri2_img;
 395    _EGLImage *img;
 396
 397    (void) screen;
 398
 399    img = _eglLookupImage(image, disp);
 400    if (img == NULL) {
 401       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 402       return NULL;
 403    }
 404
 405    dri2_img = dri2_egl_image(image);
 406
 407    return dri2_img->dri_image;
 408 }
 409
 410 const __DRIimageLookupExtension image_lookup_extension = {
 411    .base = { __DRI_IMAGE_LOOKUP, 1 },
 412
 413    .lookupEGLImage       = dri2_lookup_egl_image
 414 };
 415
 416 struct dri2_extension_match {
 417    const char *name;
 418    int version;
 419    int offset;
 420 };
 421
 422 static const struct dri2_extension_match dri3_driver_extensions[] = {
 423    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 424    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 425    { NULL, 0, 0 }
 426 };
 427
 428 static const struct dri2_extension_match dri2_driver_extensions[] = {
 429    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 430    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 431    { NULL, 0, 0 }
 432 };
 433
 434 static const struct dri2_extension_match dri2_core_extensions[] = {
 435    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 436    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 437    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 438    { NULL, 0, 0 }
 439 };
 440
 441 static const struct dri2_extension_match swrast_driver_extensions[] = {
 442    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 443    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 444    { NULL, 0, 0 }
 445 };
 446
 447 static const struct dri2_extension_match swrast_core_extensions[] = {
 448    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 449    { NULL, 0, 0 }
 450 };
 451
 452 static const struct dri2_extension_match optional_core_extensions[] = {
 453    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 454    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 455    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 456    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 457    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 458    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 459    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 460    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 461    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 462    { NULL, 0, 0 }
 463 };
 464
 465 static EGLBoolean
 466 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 467                      const struct dri2_extension_match *matches,
 468                      const __DRIextension **extensions,
 469                      bool optional)
 470 {
 471    int ret = EGL_TRUE;
 472    void *field;
 473
 474    for (int i = 0; extensions[i]; i++) {
 475       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 476       for (int j = 0; matches[j].name; j++) {
 477          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 478              extensions[i]->version >= matches[j].version) {
 479             field = ((char *) dri2_dpy + matches[j].offset);
 480             *(const __DRIextension **) field = extensions[i];
 481             _eglLog(_EGL_INFO, "found extension %s version %d",
 482                     extensions[i]->name, extensions[i]->version);
 483             break;
 484          }
 485       }
 486    }
 487
 488    for (int j = 0; matches[j].name; j++) {
 489       field = ((char *) dri2_dpy + matches[j].offset);
 490       if (*(const __DRIextension **) field == NULL) {
 491          if (optional) {
 492             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 493                     matches[j].name, matches[j].version);
 494          } else {
 495             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 496                     matches[j].name, matches[j].version);
 497             ret = EGL_FALSE;
 498          }
 499       }
 500    }
 501
 502    return ret;
 503 }
 504
 505 static const __DRIextension **
 506 dri2_open_driver(_EGLDisplay *disp)
 507 {
 508    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 509    const __DRIextension **extensions = NULL;
 510    char path[PATH_MAX], *search_paths, *next, *end;
 511    char *get_extensions_name;
 512    const __DRIextension **(*get_extensions)(void);
 513
 514    search_paths = NULL;
 515    if (geteuid() == getuid()) {
 516       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 517       search_paths = getenv("LIBGL_DRIVERS_PATH");
 518    }
 519    if (search_paths == NULL)
 520       search_paths = DEFAULT_DRIVER_DIR;
 521
 522    dri2_dpy->driver = NULL;
 523    end = search_paths + strlen(search_paths);
 524    for (char *p = search_paths; p < end; p = next + 1) {
 525       int len;
 526       next = strchr(p, ':');
 527       if (next == NULL)
 528          next = end;
 529
 530       len = next - p;
 531 #if GLX_USE_TLS
 532       snprintf(path, sizeof path,
 533                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 534       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 535 #endif
 536       if (dri2_dpy->driver == NULL) {
 537          snprintf(path, sizeof path,
 538                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 539          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 540          if (dri2_dpy->driver == NULL)
 541             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 542       }
 543       /* not need continue to loop all paths once the driver is found */
 544       if (dri2_dpy->driver != NULL)
 545          break;
 546    }
 547
 548    if (dri2_dpy->driver == NULL) {
 549       _eglLog(_EGL_WARNING,
 550               "DRI2: failed to open %s (search paths %s)",
 551               dri2_dpy->driver_name, search_paths);
 552       return NULL;
 553    }
 554
 555    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 556
 557    get_extensions_name = loader_get_extensions_name(dri2_dpy->driver_name);
 558    if (get_extensions_name) {
 559       get_extensions = dlsym(dri2_dpy->driver, get_extensions_name);
 560       if (get_extensions) {
 561          extensions = get_extensions();
 562       } else {
 563          _eglLog(_EGL_DEBUG, "driver does not expose %s(): %s\n",
 564                  get_extensions_name, dlerror());
 565       }
 566       free(get_extensions_name);
 567    }
 568
 569    if (!extensions)
 570       extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 571    if (extensions == NULL) {
 572       _eglLog(_EGL_WARNING,
 573               "DRI2: driver exports no extensions (%s)", dlerror());
 574       dlclose(dri2_dpy->driver);
 575    }
 576
 577    return extensions;
 578 }
 579
 580 EGLBoolean
 581 dri2_load_driver_dri3(_EGLDisplay *disp)
 582 {
 583    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 584    const __DRIextension **extensions;
 585
 586    extensions = dri2_open_driver(disp);
 587    if (!extensions)
 588       return EGL_FALSE;
 589
 590    if (!dri2_bind_extensions(dri2_dpy, dri3_driver_extensions, extensions, false)) {
 591       dlclose(dri2_dpy->driver);
 592       return EGL_FALSE;
 593    }
 594    dri2_dpy->driver_extensions = extensions;
 595
 596    return EGL_TRUE;
 597 }
 598
 599 EGLBoolean
 600 dri2_load_driver(_EGLDisplay *disp)
 601 {
 602    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 603    const __DRIextension **extensions;
 604
 605    extensions = dri2_open_driver(disp);
 606    if (!extensions)
 607       return EGL_FALSE;
 608
 609    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions, false)) {
 610       dlclose(dri2_dpy->driver);
 611       return EGL_FALSE;
 612    }
 613    dri2_dpy->driver_extensions = extensions;
 614
 615    return EGL_TRUE;
 616 }
 617
 618 EGLBoolean
 619 dri2_load_driver_swrast(_EGLDisplay *disp)
 620 {
 621    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 622    const __DRIextension **extensions;
 623
 624    extensions = dri2_open_driver(disp);
 625    if (!extensions)
 626       return EGL_FALSE;
 627
 628    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions, false)) {
 629       dlclose(dri2_dpy->driver);
 630       return EGL_FALSE;
 631    }
 632    dri2_dpy->driver_extensions = extensions;
 633
 634    return EGL_TRUE;
 635 }
 636
 637 static unsigned
 638 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 639 {
 640    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 641    unsigned int value = 0;
 642
 643    if (!rendererQuery ||
 644        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 645       return 0;
 646
 647    return value;
 648 }
 649
 650 void
 651 dri2_setup_screen(_EGLDisplay *disp)
 652 {
 653    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 654    unsigned int api_mask;
 655
 656    /*
 657     * EGL 1.5 specification defines the default value to 1. Moreover,
 658     * eglSwapInterval() is required to clamp requested value to the supported
 659     * range. Since the default value is implicitly assumed to be supported,
 660     * use it as both minimum and maximum for the platforms that do not allow
 661     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 662     * override these values already.
 663     */
 664    dri2_dpy->min_swap_interval = 1;
 665    dri2_dpy->max_swap_interval = 1;
 666    dri2_dpy->default_swap_interval = 1;
 667
 668    if (dri2_dpy->image_driver) {
 669       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 670    } else if (dri2_dpy->dri2) {
 671       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 672    } else {
 673       assert(dri2_dpy->swrast);
 674       api_mask = 1 << __DRI_API_OPENGL |
 675                  1 << __DRI_API_GLES |
 676                  1 << __DRI_API_GLES2 |
 677                  1 << __DRI_API_GLES3;
 678    }
 679
 680    disp->ClientAPIs = 0;
 681    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 682       disp->ClientAPIs |= EGL_OPENGL_BIT;
 683    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 684       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 685    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 686       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 687    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 688       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 689
 690    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 691    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 692    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 693
 694    /* Report back to EGL the bitmask of priorities supported */
 695    disp->Extensions.IMG_context_priority =
 696       dri2_renderer_query_integer(dri2_dpy,
 697                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 698
 699    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 700
 701    if (dri2_renderer_query_integer(dri2_dpy,
 702                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 703       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 704
 705    if (dri2_dpy->image_driver ||
 706        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 707        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 708       disp->Extensions.KHR_create_context = EGL_TRUE;
 709
 710       if (dri2_dpy->robustness)
 711          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 712    }
 713
 714    if (dri2_dpy->no_error)
 715       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 716
 717    if (dri2_dpy->fence) {
 718       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 719       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 720       if (dri2_dpy->fence->get_fence_from_cl_event)
 721          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 722       if (dri2_dpy->fence->base.version >= 2 &&
 723           dri2_dpy->fence->get_capabilities) {
 724          unsigned capabilities =
 725             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 726          disp->Extensions.ANDROID_native_fence_sync =
 727             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 728       }
 729    }
 730
 731    if (dri2_dpy->blob)
 732       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 733
 734    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 735
 736    if (dri2_dpy->image) {
 737       if (dri2_dpy->image->base.version >= 10 &&
 738           dri2_dpy->image->getCapabilities != NULL) {
 739          int capabilities;
 740
 741          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 742          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 743
 744          if (dri2_dpy->image->base.version >= 11)
 745             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 746       } else {
 747          disp->Extensions.MESA_drm_image = EGL_TRUE;
 748          if (dri2_dpy->image->base.version >= 11)
 749             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 750       }
 751
 752       disp->Extensions.KHR_image_base = EGL_TRUE;
 753       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 754       if (dri2_dpy->image->base.version >= 5 &&
 755           dri2_dpy->image->createImageFromTexture) {
 756          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 757          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 758
 759          if (dri2_renderer_query_integer(dri2_dpy,
 760                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 761              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 762       }
 763 #ifdef HAVE_LIBDRM
 764       if (dri2_dpy->image->base.version >= 8 &&
 765           dri2_dpy->image->createImageFromDmaBufs) {
 766          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 767       }
 768       if (dri2_dpy->image->base.version >= 15 &&
 769           dri2_dpy->image->createImageFromDmaBufs2 &&
 770           dri2_dpy->image->queryDmaBufFormats &&
 771           dri2_dpy->image->queryDmaBufModifiers) {
 772          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 773       }
 774 #endif
 775    }
 776
 777    if (dri2_dpy->flush_control)
 778       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 779 }
 780
 781 void
 782 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 783 {
 784    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 785    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 786
 787    /* Allow driconf to override applications.*/
 788    if (dri2_dpy->config)
 789       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 790                                      "vblank_mode", &vblank_mode);
 791    switch (vblank_mode) {
 792    case DRI_CONF_VBLANK_NEVER:
 793       dri2_dpy->min_swap_interval = 0;
 794       dri2_dpy->max_swap_interval = 0;
 795       dri2_dpy->default_swap_interval = 0;
 796       break;
 797    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 798       dri2_dpy->min_swap_interval = 1;
 799       dri2_dpy->max_swap_interval = max_swap_interval;
 800       dri2_dpy->default_swap_interval = 1;
 801       break;
 802    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 803       dri2_dpy->min_swap_interval = 0;
 804       dri2_dpy->max_swap_interval = max_swap_interval;
 805       dri2_dpy->default_swap_interval = 0;
 806       break;
 807    default:
 808    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 809       dri2_dpy->min_swap_interval = 0;
 810       dri2_dpy->max_swap_interval = max_swap_interval;
 811       dri2_dpy->default_swap_interval = 1;
 812       break;
 813    }
 814 }
 815
 816 /* All platforms but DRM call this function to create the screen and populate
 817  * the driver_configs. DRM inherits that information from its display - GBM.
 818  */
 819 EGLBoolean
 820 dri2_create_screen(_EGLDisplay *disp)
 821 {
 822    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 823
 824    if (dri2_dpy->image_driver) {
 825       dri2_dpy->dri_screen =
 826          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 827                                                   dri2_dpy->loader_extensions,
 828                                                   dri2_dpy->driver_extensions,
 829                                                   &dri2_dpy->driver_configs,
 830                                                   disp);
 831    } else if (dri2_dpy->dri2) {
 832       if (dri2_dpy->dri2->base.version >= 4) {
 833          dri2_dpy->dri_screen =
 834             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 835                                              dri2_dpy->loader_extensions,
 836                                              dri2_dpy->driver_extensions,
 837                                              &dri2_dpy->driver_configs, disp);
 838       } else {
 839          dri2_dpy->dri_screen =
 840             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 841                                             dri2_dpy->loader_extensions,
 842                                             &dri2_dpy->driver_configs, disp);
 843       }
 844    } else {
 845       assert(dri2_dpy->swrast);
 846       if (dri2_dpy->swrast->base.version >= 4) {
 847          dri2_dpy->dri_screen =
 848             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 849                                                dri2_dpy->driver_extensions,
 850                                                &dri2_dpy->driver_configs, disp);
 851       } else {
 852          dri2_dpy->dri_screen =
 853             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 854                                               &dri2_dpy->driver_configs, disp);
 855       }
 856    }
 857
 858    if (dri2_dpy->dri_screen == NULL) {
 859       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 860       return EGL_FALSE;
 861    }
 862
 863    dri2_dpy->own_dri_screen = true;
 864    return EGL_TRUE;
 865 }
 866
 867 EGLBoolean
 868 dri2_setup_extensions(_EGLDisplay *disp)
 869 {
 870    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 871    const struct dri2_extension_match *mandatory_core_extensions;
 872    const __DRIextension **extensions;
 873
 874    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 875
 876    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 877       mandatory_core_extensions = dri2_core_extensions;
 878    else
 879       mandatory_core_extensions = swrast_core_extensions;
 880
 881    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 882       return EGL_FALSE;
 883
 884 #ifdef HAVE_DRI3
 885    dri2_dpy->multibuffers_available =
 886       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
 887                                             dri2_dpy->dri3_minor_version >= 2)) &&
 888       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
 889 #endif
 890
 891    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 892    return EGL_TRUE;
 893 }
 894
 895 /**
 896  * Called via eglInitialize(), GLX_drv->API.Initialize().
 897  *
 898  * This must be guaranteed to be called exactly once, even if eglInitialize is
 899  * called many times (without a eglTerminate in between).
 900  */
 901 static EGLBoolean
 902 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 903 {
 904    EGLBoolean ret = EGL_FALSE;
 905    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 906
 907    /* In the case where the application calls eglMakeCurrent(context1),
 908     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 909     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 910     * initialized, as we need it to be able to free context1 correctly.
 911     *
 912     * It would probably be safest to forcibly release the display with
 913     * dri2_display_release, to make sure the display is reinitialized correctly.
 914     * However, the EGL spec states that we need to keep a reference to the
 915     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 916     * we would leak context1 as we would be missing the old display connection
 917     * to free it up correctly.
 918     */
 919    if (dri2_dpy) {
 920       dri2_dpy->ref_count++;
 921       return EGL_TRUE;
 922    }
 923
 924    switch (disp->Platform) {
 925    case _EGL_PLATFORM_SURFACELESS:
 926       ret = dri2_initialize_surfaceless(drv, disp);
 927       break;
 928    case _EGL_PLATFORM_X11:
 929       ret = dri2_initialize_x11(drv, disp);
 930       break;
 931    case _EGL_PLATFORM_DRM:
 932       ret = dri2_initialize_drm(drv, disp);
 933       break;
 934    case _EGL_PLATFORM_WAYLAND:
 935       ret = dri2_initialize_wayland(drv, disp);
 936       break;
 937    case _EGL_PLATFORM_ANDROID:
 938       ret = dri2_initialize_android(drv, disp);
 939       break;
 940    default:
 941       unreachable("Callers ensure we cannot get here.");
 942       return EGL_FALSE;
 943    }
 944
 945    if (!ret)
 946       return EGL_FALSE;
 947
 948    dri2_dpy = dri2_egl_display(disp);
 949    dri2_dpy->ref_count++;
 950
 951    return EGL_TRUE;
 952 }
 953
 954 /**
 955  * Decrement display reference count, and free up display if necessary.
 956  */
 957 static void
 958 dri2_display_release(_EGLDisplay *disp)
 959 {
 960    struct dri2_egl_display *dri2_dpy;
 961
 962    if (!disp)
 963       return;
 964
 965    dri2_dpy = dri2_egl_display(disp);
 966
 967    assert(dri2_dpy->ref_count > 0);
 968    dri2_dpy->ref_count--;
 969
 970    if (dri2_dpy->ref_count > 0)
 971       return;
 972
 973    _eglCleanupDisplay(disp);
 974    dri2_display_destroy(disp);
 975 }
 976
 977 void
 978 dri2_display_destroy(_EGLDisplay *disp)
 979 {
 980    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 981
 982    if (dri2_dpy->own_dri_screen) {
 983       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
 984          dri2_dpy->vtbl->close_screen_notify(disp);
 985       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 986    }
 987    if (dri2_dpy->fd >= 0)
 988       close(dri2_dpy->fd);
 989    if (dri2_dpy->driver)
 990       dlclose(dri2_dpy->driver);
 991    free(dri2_dpy->driver_name);
 992
 993 #ifdef HAVE_WAYLAND_PLATFORM
 994    free(dri2_dpy->device_name);
 995 #endif
 996
 997    switch (disp->Platform) {
 998    case _EGL_PLATFORM_X11:
 999       dri2_teardown_x11(dri2_dpy);
1000       break;
1001    case _EGL_PLATFORM_DRM:
1002       dri2_teardown_drm(dri2_dpy);
1003       break;
1004    case _EGL_PLATFORM_WAYLAND:
1005       dri2_teardown_wayland(dri2_dpy);
1006       break;
1007    default:
1008       /* TODO: add teardown for other platforms */
1009       break;
1010    }
1011
1012    /* The drm platform does not create the screen/driver_configs but reuses
1013     * the ones from the gbm device. As such the gbm itself is responsible
1014     * for the cleanup.
1015     */
1016    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1017       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1018          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1019       free(dri2_dpy->driver_configs);
1020    }
1021    free(dri2_dpy);
1022    disp->DriverData = NULL;
1023 }
1024
1025 __DRIbuffer *
1026 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1027                                     unsigned int att, unsigned int format)
1028 {
1029    struct dri2_egl_display *dri2_dpy =
1030       dri2_egl_display(dri2_surf->base.Resource.Display);
1031
1032    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1033       return NULL;
1034
1035    if (!dri2_surf->local_buffers[att]) {
1036       dri2_surf->local_buffers[att] =
1037          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1038                                         dri2_surf->base.Width, dri2_surf->base.Height);
1039    }
1040
1041    return dri2_surf->local_buffers[att];
1042 }
1043
1044 void
1045 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1046 {
1047    struct dri2_egl_display *dri2_dpy =
1048       dri2_egl_display(dri2_surf->base.Resource.Display);
1049
1050    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1051       if (dri2_surf->local_buffers[i]) {
1052          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1053                                        dri2_surf->local_buffers[i]);
1054          dri2_surf->local_buffers[i] = NULL;
1055       }
1056    }
1057 }
1058
1059 /**
1060  * Called via eglTerminate(), drv->API.Terminate().
1061  *
1062  * This must be guaranteed to be called exactly once, even if eglTerminate is
1063  * called many times (without a eglInitialize in between).
1064  */
1065 static EGLBoolean
1066 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1067 {
1068    /* Release all non-current Context/Surfaces. */
1069    _eglReleaseDisplayResources(drv, disp);
1070
1071    dri2_display_release(disp);
1072
1073    return EGL_TRUE;
1074 }
1075
1076 /**
1077  * Set the error code after a call to
1078  * dri2_egl_display::dri2::createContextAttribs.
1079  */
1080 static void
1081 dri2_create_context_attribs_error(int dri_error)
1082 {
1083    EGLint egl_error;
1084
1085    switch (dri_error) {
1086    case __DRI_CTX_ERROR_SUCCESS:
1087       return;
1088
1089    case __DRI_CTX_ERROR_NO_MEMORY:
1090       egl_error = EGL_BAD_ALLOC;
1091       break;
1092
1093   /* From the EGL_KHR_create_context spec, section "Errors":
1094    *
1095    *   * If <config> does not support a client API context compatible
1096    *     with the requested API major and minor version, [...] context flags,
1097    *     and context reset notification behavior (for client API types where
1098    *     these attributes are supported), then an EGL_BAD_MATCH error is
1099    *     generated.
1100    *
1101    *   * If an OpenGL ES context is requested and the values for
1102    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1103    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1104    *     is not defined, than an EGL_BAD_MATCH error is generated.
1105    *
1106    *   * If an OpenGL context is requested, the requested version is
1107    *     greater than 3.2, and the value for attribute
1108    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1109    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1110    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1111    *     one of these bits set; or if the implementation does not support
1112    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1113    */
1114    case __DRI_CTX_ERROR_BAD_API:
1115    case __DRI_CTX_ERROR_BAD_VERSION:
1116    case __DRI_CTX_ERROR_BAD_FLAG:
1117       egl_error = EGL_BAD_MATCH;
1118       break;
1119
1120   /* From the EGL_KHR_create_context spec, section "Errors":
1121    *
1122    *   * If an attribute name or attribute value in <attrib_list> is not
1123    *     recognized (including unrecognized bits in bitmask attributes),
1124    *     then an EGL_BAD_ATTRIBUTE error is generated."
1125    */
1126    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1127    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1128       egl_error = EGL_BAD_ATTRIBUTE;
1129       break;
1130
1131    default:
1132       assert(0);
1133       egl_error = EGL_BAD_MATCH;
1134       break;
1135    }
1136
1137    _eglError(egl_error, "dri2_create_context");
1138 }
1139
1140 static bool
1141 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1142                           struct dri2_egl_display *dri2_dpy,
1143                           uint32_t *ctx_attribs,
1144                           unsigned *num_attribs)
1145 {
1146    int pos = 0;
1147
1148    assert(*num_attribs >= NUM_ATTRIBS);
1149
1150    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1151    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1152    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1153    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1154
1155    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1156       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1157        * extension, don't even try to send it the robust-access flag.
1158        * It may explode.  Instead, generate the required EGL error here.
1159        */
1160       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1161             && !dri2_dpy->robustness) {
1162          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1163          return false;
1164       }
1165
1166       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1167       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1168          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1169    }
1170
1171    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1172       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1173        * extension, don't even try to send it a reset strategy.  It may
1174        * explode.  Instead, generate the required EGL error here.
1175        */
1176       if (!dri2_dpy->robustness) {
1177          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1178          return false;
1179       }
1180
1181       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1182       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1183    }
1184
1185    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1186       unsigned val;
1187
1188       switch (dri2_ctx->base.ContextPriority) {
1189       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1190          val = __DRI_CTX_PRIORITY_HIGH;
1191          break;
1192       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1193          val = __DRI_CTX_PRIORITY_MEDIUM;
1194          break;
1195       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1196          val = __DRI_CTX_PRIORITY_LOW;
1197          break;
1198       default:
1199          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1200          return false;
1201       }
1202
1203       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1204       ctx_attribs[pos++] = val;
1205    }
1206
1207    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1208       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1209       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1210    }
1211
1212    *num_attribs = pos;
1213
1214    return true;
1215 }
1216
1217 /**
1218  * Called via eglCreateContext(), drv->API.CreateContext().
1219  */
1220 static _EGLContext *
1221 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1222                     _EGLContext *share_list, const EGLint *attrib_list)
1223 {
1224    struct dri2_egl_context *dri2_ctx;
1225    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1226    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1227    __DRIcontext *shared =
1228       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1229    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1230    const __DRIconfig *dri_config;
1231    int api;
1232    unsigned error;
1233    unsigned num_attribs = NUM_ATTRIBS;
1234    uint32_t ctx_attribs[NUM_ATTRIBS];
1235
1236    (void) drv;
1237
1238    dri2_ctx = malloc(sizeof *dri2_ctx);
1239    if (!dri2_ctx) {
1240       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1241       return NULL;
1242    }
1243
1244    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1245       goto cleanup;
1246
1247    /* The EGL_EXT_create_context_robustness spec says:
1248     *
1249     *    "Add to the eglCreateContext context creation errors: [...]
1250     *
1251     *     * If the reset notification behavior of <share_context> and the
1252     *       newly created context are different then an EGL_BAD_MATCH error is
1253     *       generated."
1254     */
1255    if (share_list && share_list->ResetNotificationStrategy !=
1256                      dri2_ctx->base.ResetNotificationStrategy) {
1257       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1258       goto cleanup;
1259    }
1260
1261    /* The EGL_KHR_create_context_no_error spec says:
1262     *
1263     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1264     *    used to create <share_context> does not match the value of
1265     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1266     */
1267    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1268       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1269       goto cleanup;
1270    }
1271
1272    switch (dri2_ctx->base.ClientAPI) {
1273    case EGL_OPENGL_ES_API:
1274       switch (dri2_ctx->base.ClientMajorVersion) {
1275       case 1:
1276          api = __DRI_API_GLES;
1277          break;
1278       case 2:
1279          api = __DRI_API_GLES2;
1280          break;
1281       case 3:
1282          api = __DRI_API_GLES3;
1283          break;
1284       default:
1285          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1286          free(dri2_ctx);
1287          return NULL;
1288       }
1289       break;
1290    case EGL_OPENGL_API:
1291       if ((dri2_ctx->base.ClientMajorVersion >= 4
1292            || (dri2_ctx->base.ClientMajorVersion == 3
1293                && dri2_ctx->base.ClientMinorVersion >= 2))
1294           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1295          api = __DRI_API_OPENGL_CORE;
1296       else
1297          api = __DRI_API_OPENGL;
1298       break;
1299    default:
1300       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1301       free(dri2_ctx);
1302       return NULL;
1303    }
1304
1305    if (conf != NULL) {
1306       /* The config chosen here isn't necessarily
1307        * used for surfaces later.
1308        * A pixmap surface will use the single config.
1309        * This opportunity depends on disabling the
1310        * doubleBufferMode check in
1311        * src/mesa/main/context.c:check_compatible()
1312        */
1313       if (dri2_config->dri_config[1][0])
1314          dri_config = dri2_config->dri_config[1][0];
1315       else
1316          dri_config = dri2_config->dri_config[0][0];
1317
1318       /* EGL_WINDOW_BIT is set only when there is a double-buffered dri_config.
1319        * This makes sure the back buffer will always be used.
1320        */
1321       if (conf->SurfaceType & EGL_WINDOW_BIT)
1322          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
1323    }
1324    else
1325       dri_config = NULL;
1326
1327    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1328                                   &num_attribs))
1329       goto cleanup;
1330
1331    if (dri2_dpy->image_driver) {
1332       dri2_ctx->dri_context =
1333          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1334                                                       api,
1335                                                       dri_config,
1336                                                       shared,
1337                                                       num_attribs / 2,
1338                                                       ctx_attribs,
1339                                                       & error,
1340                                                       dri2_ctx);
1341       dri2_create_context_attribs_error(error);
1342    } else if (dri2_dpy->dri2) {
1343       if (dri2_dpy->dri2->base.version >= 3) {
1344          dri2_ctx->dri_context =
1345             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1346                                                  api,
1347                                                  dri_config,
1348                                                  shared,
1349                                                  num_attribs / 2,
1350                                                  ctx_attribs,
1351                                                  & error,
1352                                                  dri2_ctx);
1353          dri2_create_context_attribs_error(error);
1354       } else {
1355          dri2_ctx->dri_context =
1356             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1357                                                    api,
1358                                                    dri_config,
1359                                                    shared,
1360                                                    dri2_ctx);
1361       }
1362    } else {
1363       assert(dri2_dpy->swrast);
1364       if (dri2_dpy->swrast->base.version >= 3) {
1365          dri2_ctx->dri_context =
1366             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1367                                                    api,
1368                                                    dri_config,
1369                                                    shared,
1370                                                    num_attribs / 2,
1371                                                    ctx_attribs,
1372                                                    & error,
1373                                                    dri2_ctx);
1374          dri2_create_context_attribs_error(error);
1375       } else {
1376          dri2_ctx->dri_context =
1377             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1378                                                      api,
1379                                                      dri_config,
1380                                                      shared,
1381                                                      dri2_ctx);
1382       }
1383    }
1384
1385    if (!dri2_ctx->dri_context)
1386       goto cleanup;
1387
1388    return &dri2_ctx->base;
1389
1390  cleanup:
1391    free(dri2_ctx);
1392    return NULL;
1393 }
1394
1395 /**
1396  * Called via eglDestroyContext(), drv->API.DestroyContext().
1397  */
1398 static EGLBoolean
1399 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1400 {
1401    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1402    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1403
1404    if (_eglPutContext(ctx)) {
1405       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1406       free(dri2_ctx);
1407    }
1408
1409    return EGL_TRUE;
1410 }
1411
1412 EGLBoolean
1413 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
1414         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1415 {
1416    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1417    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1418
1419    dri2_surf->out_fence_fd = -1;
1420    dri2_surf->enable_out_fence = false;
1421    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1422        dri2_dpy->fence->get_capabilities &&
1423        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1424         __DRI_FENCE_CAP_NATIVE_FD)) {
1425       dri2_surf->enable_out_fence = enable_out_fence;
1426    }
1427
1428    return _eglInitSurface(surf, dpy, type, conf, attrib_list);
1429 }
1430
1431 static void
1432 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1433 {
1434    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1435
1436    if (dri2_surf->out_fence_fd >= 0)
1437       close(dri2_surf->out_fence_fd);
1438
1439    dri2_surf->out_fence_fd = fence_fd;
1440 }
1441
1442 void
1443 dri2_fini_surface(_EGLSurface *surf)
1444 {
1445    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1446
1447    dri2_surface_set_out_fence_fd(surf, -1);
1448    dri2_surf->enable_out_fence = false;
1449 }
1450
1451 static EGLBoolean
1452 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1453 {
1454    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1455
1456    if (!_eglPutSurface(surf))
1457       return EGL_TRUE;
1458
1459    return dri2_dpy->vtbl->destroy_surface(drv, dpy, surf);
1460 }
1461
1462 static void
1463 dri2_surf_update_fence_fd(_EGLContext *ctx,
1464                           _EGLDisplay *dpy, _EGLSurface *surf)
1465 {
1466    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1467    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1468    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1469    int fence_fd = -1;
1470    void *fence;
1471
1472    if (!dri2_surf->enable_out_fence)
1473       return;
1474
1475    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1476    if (fence) {
1477       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1478                                                fence);
1479       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1480    }
1481    dri2_surface_set_out_fence_fd(surf, fence_fd);
1482 }
1483
1484 /**
1485  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1486  */
1487 static EGLBoolean
1488 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1489                   _EGLSurface *rsurf, _EGLContext *ctx)
1490 {
1491    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1492    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1493    _EGLContext *old_ctx;
1494    _EGLSurface *old_dsurf, *old_rsurf;
1495    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1496    __DRIdrawable *ddraw, *rdraw;
1497    __DRIcontext *cctx;
1498    EGLBoolean unbind;
1499
1500    if (!dri2_dpy)
1501       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1502
1503    /* make new bindings */
1504    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1505       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1506       return EGL_FALSE;
1507    }
1508
1509    /* flush before context switch */
1510    if (old_ctx)
1511       dri2_gl_flush();
1512
1513    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1514    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1515    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1516
1517    if (old_ctx) {
1518       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1519
1520       if (old_dsurf)
1521          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1522       dri2_dpy->core->unbindContext(old_cctx);
1523    }
1524
1525    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1526
1527    if (unbind || dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1528       dri2_destroy_surface(drv, disp, old_dsurf);
1529       dri2_destroy_surface(drv, disp, old_rsurf);
1530
1531       if (!unbind)
1532          dri2_dpy->ref_count++;
1533       if (old_ctx) {
1534          EGLDisplay old_disp = _eglGetDisplayHandle(old_ctx->Resource.Display);
1535          dri2_destroy_context(drv, disp, old_ctx);
1536          dri2_display_release(old_disp);
1537       }
1538
1539       return EGL_TRUE;
1540    } else {
1541       /* undo the previous _eglBindContext */
1542       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1543       assert(&dri2_ctx->base == ctx &&
1544              tmp_dsurf == dsurf &&
1545              tmp_rsurf == rsurf);
1546
1547       _eglPutSurface(dsurf);
1548       _eglPutSurface(rsurf);
1549       _eglPutContext(ctx);
1550
1551       _eglPutSurface(old_dsurf);
1552       _eglPutSurface(old_rsurf);
1553       _eglPutContext(old_ctx);
1554
1555       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1556        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1557        * as EGL_SUCCESS.
1558        */
1559       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1560    }
1561 }
1562
1563 __DRIdrawable *
1564 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1565 {
1566    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1567
1568    return dri2_surf->dri_drawable;
1569 }
1570
1571 /*
1572  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1573  */
1574 static _EGLProc
1575 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1576 {
1577    return _glapi_get_proc_address(procname);
1578 }
1579
1580 static _EGLSurface*
1581 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1582                            _EGLConfig *conf, void *native_window,
1583                            const EGLint *attrib_list)
1584 {
1585    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1586    return dri2_dpy->vtbl->create_window_surface(drv, dpy, conf, native_window,
1587                                                 attrib_list);
1588 }
1589
1590 static _EGLSurface*
1591 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1592                            _EGLConfig *conf, void *native_pixmap,
1593                            const EGLint *attrib_list)
1594 {
1595    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1596    return dri2_dpy->vtbl->create_pixmap_surface(drv, dpy, conf, native_pixmap,
1597                                                 attrib_list);
1598 }
1599
1600 static _EGLSurface*
1601 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1602                            _EGLConfig *conf, const EGLint *attrib_list)
1603 {
1604    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1605    return dri2_dpy->vtbl->create_pbuffer_surface(drv, dpy, conf, attrib_list);
1606 }
1607
1608 static EGLBoolean
1609 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1610                    EGLint interval)
1611 {
1612    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1613    if (!dri2_dpy->vtbl->swap_interval)
1614       return EGL_TRUE;
1615    return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval);
1616 }
1617
1618 /**
1619  * Asks the client API to flush any rendering to the drawable so that we can
1620  * do our swapbuffers.
1621  */
1622 void
1623 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1624 {
1625    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1626    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1627
1628    if (dri2_dpy->flush) {
1629       if (dri2_dpy->flush->base.version >= 4) {
1630          /* We know there's a current context because:
1631           *
1632           *     "If surface is not bound to the calling thread’s current
1633           *      context, an EGL_BAD_SURFACE error is generated."
1634          */
1635          _EGLContext *ctx = _eglGetCurrentContext();
1636          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1637
1638          /* From the EGL 1.4 spec (page 52):
1639           *
1640           *     "The contents of ancillary buffers are always undefined
1641           *      after calling eglSwapBuffers."
1642           */
1643          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1644                                            dri_drawable,
1645                                            __DRI2_FLUSH_DRAWABLE |
1646                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1647                                            __DRI2_THROTTLE_SWAPBUFFER);
1648       } else {
1649          dri2_dpy->flush->flush(dri_drawable);
1650       }
1651    }
1652 }
1653
1654 static EGLBoolean
1655 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1656 {
1657    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1658    _EGLContext *ctx = _eglGetCurrentContext();
1659
1660    if (ctx && surf)
1661       dri2_surf_update_fence_fd(ctx, dpy, surf);
1662    return dri2_dpy->vtbl->swap_buffers(drv, dpy, surf);
1663 }
1664
1665 static EGLBoolean
1666 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *dpy,
1667                               _EGLSurface *surf,
1668                               const EGLint *rects, EGLint n_rects)
1669 {
1670    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1671    _EGLContext *ctx = _eglGetCurrentContext();
1672
1673    if (ctx && surf)
1674       dri2_surf_update_fence_fd(ctx, dpy, surf);
1675    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, dpy, surf,
1676                                                    rects, n_rects);
1677 }
1678
1679 static EGLBoolean
1680 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1681                          EGLint numRects, const EGLint *rects)
1682 {
1683    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1684    return dri2_dpy->vtbl->swap_buffers_region(drv, dpy, surf, numRects, rects);
1685 }
1686
1687 static EGLBoolean
1688 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1689                        EGLint *rects, EGLint n_rects)
1690 {
1691    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1692    return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
1693 }
1694
1695 static EGLBoolean
1696 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1697                      EGLint x, EGLint y, EGLint width, EGLint height)
1698 {
1699    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1700    return dri2_dpy->vtbl->post_sub_buffer(drv, dpy, surf, x, y, width, height);
1701 }
1702
1703 static EGLBoolean
1704 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1705                   void *native_pixmap_target)
1706 {
1707    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1708    return dri2_dpy->vtbl->copy_buffers(drv, dpy, surf, native_pixmap_target);
1709 }
1710
1711 static EGLint
1712 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1713 {
1714    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1715    return dri2_dpy->vtbl->query_buffer_age(drv, dpy, surf);
1716 }
1717
1718 static EGLBoolean
1719 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1720 {
1721    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1722    _EGLSurface *surf = ctx->DrawSurface;
1723    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1724
1725    (void) drv;
1726
1727    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1728     * we need to copy fake to real here.*/
1729
1730    if (dri2_dpy->flush != NULL)
1731       dri2_dpy->flush->flush(dri_drawable);
1732
1733    return EGL_TRUE;
1734 }
1735
1736 static EGLBoolean
1737 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1738 {
1739    (void) drv;
1740    (void) disp;
1741
1742    if (engine != EGL_CORE_NATIVE_ENGINE)
1743       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1744    /* glXWaitX(); */
1745
1746    return EGL_TRUE;
1747 }
1748
1749 static EGLBoolean
1750 dri2_bind_tex_image(_EGLDriver *drv,
1751                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1752 {
1753    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1754    struct dri2_egl_context *dri2_ctx;
1755    _EGLContext *ctx;
1756    GLint format, target;
1757    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1758
1759    ctx = _eglGetCurrentContext();
1760    dri2_ctx = dri2_egl_context(ctx);
1761
1762    if (!_eglBindTexImage(drv, disp, surf, buffer))
1763       return EGL_FALSE;
1764
1765    switch (surf->TextureFormat) {
1766    case EGL_TEXTURE_RGB:
1767       format = __DRI_TEXTURE_FORMAT_RGB;
1768       break;
1769    case EGL_TEXTURE_RGBA:
1770       format = __DRI_TEXTURE_FORMAT_RGBA;
1771       break;
1772    default:
1773       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1774       format = __DRI_TEXTURE_FORMAT_RGBA;
1775    }
1776
1777    switch (surf->TextureTarget) {
1778    case EGL_TEXTURE_2D:
1779       target = GL_TEXTURE_2D;
1780       break;
1781    default:
1782       target = GL_TEXTURE_2D;
1783       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1784    }
1785
1786    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1787                                        target, format,
1788                                        dri_drawable);
1789
1790    return EGL_TRUE;
1791 }
1792
1793 static EGLBoolean
1794 dri2_release_tex_image(_EGLDriver *drv,
1795                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1796 {
1797    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1798    struct dri2_egl_context *dri2_ctx;
1799    _EGLContext *ctx;
1800    GLint  target;
1801    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1802
1803    ctx = _eglGetCurrentContext();
1804    dri2_ctx = dri2_egl_context(ctx);
1805
1806    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1807       return EGL_FALSE;
1808
1809    switch (surf->TextureTarget) {
1810    case EGL_TEXTURE_2D:
1811       target = GL_TEXTURE_2D;
1812       break;
1813    default:
1814       assert(0);
1815    }
1816
1817    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1818        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1819       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1820                                              target, dri_drawable);
1821    }
1822
1823    return EGL_TRUE;
1824 }
1825
1826 static _EGLImage*
1827 dri2_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
1828                   EGLenum target, EGLClientBuffer buffer,
1829                   const EGLint *attr_list)
1830 {
1831    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1832    return dri2_dpy->vtbl->create_image(drv, dpy, ctx, target, buffer,
1833                                        attr_list);
1834 }
1835
1836 static _EGLImage *
1837 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1838 {
1839    struct dri2_egl_image *dri2_img;
1840
1841    if (dri_image == NULL) {
1842       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1843       return NULL;
1844    }
1845
1846    dri2_img = malloc(sizeof *dri2_img);
1847    if (!dri2_img) {
1848       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1849       return NULL;
1850    }
1851
1852    _eglInitImage(&dri2_img->base, disp);
1853
1854    dri2_img->dri_image = dri_image;
1855
1856    return &dri2_img->base;
1857 }
1858
1859 /**
1860  * Translate a DRI Image extension error code into an EGL error code.
1861  */
1862 static EGLint
1863 egl_error_from_dri_image_error(int dri_error)
1864 {
1865    switch (dri_error) {
1866    case __DRI_IMAGE_ERROR_SUCCESS:
1867       return EGL_SUCCESS;
1868    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1869       return EGL_BAD_ALLOC;
1870    case __DRI_IMAGE_ERROR_BAD_MATCH:
1871       return EGL_BAD_MATCH;
1872    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1873       return EGL_BAD_PARAMETER;
1874    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1875       return EGL_BAD_ACCESS;
1876    default:
1877       assert(0);
1878       return EGL_BAD_ALLOC;
1879    }
1880 }
1881
1882 static _EGLImage *
1883 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1884                                    EGLClientBuffer buffer,
1885                                    const EGLint *attr_list)
1886 {
1887    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1888    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1889    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1890    __DRIimage *dri_image;
1891
1892    if (renderbuffer == 0) {
1893       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1894       return EGL_NO_IMAGE_KHR;
1895    }
1896
1897    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1898       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1899       return EGL_NO_IMAGE_KHR;
1900    }
1901
1902    if (dri2_dpy->image->base.version >= 17 &&
1903        dri2_dpy->image->createImageFromRenderbuffer2) {
1904       unsigned error = ~0;
1905
1906       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1907                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1908
1909       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1910
1911       if (!dri_image) {
1912          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1913          return EGL_NO_IMAGE_KHR;
1914       }
1915    } else {
1916       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1917                dri2_ctx->dri_context, renderbuffer, NULL);
1918       if (!dri_image) {
1919          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1920          return EGL_NO_IMAGE_KHR;
1921       }
1922    }
1923
1924    return dri2_create_image_from_dri(disp, dri_image);
1925 }
1926
1927 #ifdef HAVE_WAYLAND_PLATFORM
1928
1929 /* This structure describes how a wl_buffer maps to one or more
1930  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1931  * offsets and strides of the planes in the buffer.  This table maps a
1932  * wl_drm format code to a description of the planes in the buffer
1933  * that lets us create a __DRIimage for each of the planes. */
1934
1935 static const struct wl_drm_components_descriptor {
1936    uint32_t dri_components;
1937    EGLint components;
1938    int nplanes;
1939 } wl_drm_components[] = {
1940    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1941    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1942    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1943    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1944    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1945 };
1946
1947 static _EGLImage *
1948 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1949                                     EGLClientBuffer _buffer,
1950                                     const EGLint *attr_list)
1951 {
1952    struct wl_drm_buffer *buffer;
1953    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1954    const struct wl_drm_components_descriptor *f;
1955    __DRIimage *dri_image;
1956    _EGLImageAttribs attrs;
1957    int32_t plane;
1958
1959    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1960                                    (struct wl_resource *) _buffer);
1961    if (!buffer)
1962        return NULL;
1963
1964    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1965       return NULL;
1966
1967    plane = attrs.PlaneWL;
1968    f = buffer->driver_format;
1969    if (plane < 0 || plane >= f->nplanes) {
1970       _eglError(EGL_BAD_PARAMETER,
1971                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1972       return NULL;
1973    }
1974
1975    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1976    if (dri_image == NULL && plane == 0)
1977       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
1978    if (dri_image == NULL) {
1979       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1980       return NULL;
1981    }
1982
1983    return dri2_create_image_from_dri(disp, dri_image);
1984 }
1985 #endif
1986
1987 static EGLBoolean
1988 dri2_get_sync_values_chromium(_EGLDisplay *dpy, _EGLSurface *surf,
1989                               EGLuint64KHR *ust, EGLuint64KHR *msc,
1990                               EGLuint64KHR *sbc)
1991 {
1992    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1993    return dri2_dpy->vtbl->get_sync_values(dpy, surf, ust, msc, sbc);
1994 }
1995
1996 /**
1997  * Set the error code after a call to
1998  * dri2_egl_image::dri_image::createImageFromTexture.
1999  */
2000 static void
2001 dri2_create_image_khr_texture_error(int dri_error)
2002 {
2003    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2004
2005    if (egl_error != EGL_SUCCESS)
2006       _eglError(egl_error, "dri2_create_image_khr_texture");
2007 }
2008
2009 static _EGLImage *
2010 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2011                                    EGLenum target,
2012                                    EGLClientBuffer buffer,
2013                                    const EGLint *attr_list)
2014 {
2015    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2016    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2017    struct dri2_egl_image *dri2_img;
2018    GLuint texture = (GLuint) (uintptr_t) buffer;
2019    _EGLImageAttribs attrs;
2020    GLuint depth;
2021    GLenum gl_target;
2022    unsigned error;
2023
2024    if (texture == 0) {
2025       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2026       return EGL_NO_IMAGE_KHR;
2027    }
2028
2029    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2030       return EGL_NO_IMAGE_KHR;
2031
2032    switch (target) {
2033    case EGL_GL_TEXTURE_2D_KHR:
2034       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2035          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2036          return EGL_NO_IMAGE_KHR;
2037       }
2038       depth = 0;
2039       gl_target = GL_TEXTURE_2D;
2040       break;
2041    case EGL_GL_TEXTURE_3D_KHR:
2042       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2043          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2044          return EGL_NO_IMAGE_KHR;
2045       }
2046
2047       depth = attrs.GLTextureZOffset;
2048       gl_target = GL_TEXTURE_3D;
2049       break;
2050    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2051    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2052    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2053    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2054    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2055    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2056       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2057          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2058          return EGL_NO_IMAGE_KHR;
2059       }
2060
2061       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2062       gl_target = GL_TEXTURE_CUBE_MAP;
2063       break;
2064    default:
2065       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2066       return EGL_NO_IMAGE_KHR;
2067    }
2068
2069    dri2_img = malloc(sizeof *dri2_img);
2070    if (!dri2_img) {
2071       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2072       return EGL_NO_IMAGE_KHR;
2073    }
2074
2075    _eglInitImage(&dri2_img->base, disp);
2076
2077    dri2_img->dri_image =
2078       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2079                                               gl_target,
2080                                               texture,
2081                                               depth,
2082                                               attrs.GLTextureLevel,
2083                                               &error,
2084                                               dri2_img);
2085    dri2_create_image_khr_texture_error(error);
2086
2087    if (!dri2_img->dri_image) {
2088       free(dri2_img);
2089       return EGL_NO_IMAGE_KHR;
2090    }
2091    return &dri2_img->base;
2092 }
2093
2094 static EGLBoolean
2095 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
2096                    EGLint attribute, EGLint *value)
2097 {
2098    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2099    if (!dri2_dpy->vtbl->query_surface)
2100       return _eglQuerySurface(drv, dpy, surf, attribute, value);
2101    return dri2_dpy->vtbl->query_surface(drv, dpy, surf, attribute, value);
2102 }
2103
2104 static struct wl_buffer*
2105 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *dpy,
2106                                       _EGLImage *img)
2107 {
2108    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2109    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, dpy, img);
2110 }
2111
2112 #ifdef HAVE_LIBDRM
2113 static _EGLImage *
2114 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2115                                   EGLClientBuffer buffer, const EGLint *attr_list)
2116 {
2117    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2118    EGLint format, name, pitch;
2119    _EGLImageAttribs attrs;
2120    __DRIimage *dri_image;
2121
2122    name = (EGLint) (uintptr_t) buffer;
2123
2124    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2125       return NULL;
2126
2127    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2128        attrs.DRMBufferStrideMESA <= 0) {
2129       _eglError(EGL_BAD_PARAMETER,
2130                 "bad width, height or stride");
2131       return NULL;
2132    }
2133
2134    switch (attrs.DRMBufferFormatMESA) {
2135    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2136       format = __DRI_IMAGE_FORMAT_ARGB8888;
2137       pitch = attrs.DRMBufferStrideMESA;
2138       break;
2139    default:
2140       _eglError(EGL_BAD_PARAMETER,
2141                 "dri2_create_image_khr: unsupported pixmap depth");
2142       return NULL;
2143    }
2144
2145    dri_image =
2146       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2147                                            attrs.Width,
2148                                            attrs.Height,
2149                                            format,
2150                                            name,
2151                                            pitch,
2152                                            NULL);
2153
2154    return dri2_create_image_from_dri(disp, dri_image);
2155 }
2156
2157 static EGLBoolean
2158 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2159 {
2160    /**
2161      * The spec says:
2162      *
2163      * "Required attributes and their values are as follows:
2164      *
2165      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2166      *
2167      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2168      *    by drm_fourcc.h and used as the pixel_format parameter of the
2169      *    drm_mode_fb_cmd2 ioctl."
2170      *
2171      * and
2172      *
2173      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2174      *    incomplete, EGL_BAD_PARAMETER is generated."
2175      */
2176    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2177        !attrs->DMABufFourCC.IsPresent)
2178       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2179
2180    /**
2181     * Also:
2182     *
2183     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2184     *  specified for a plane's pitch or offset isn't supported by EGL,
2185     *  EGL_BAD_ACCESS is generated."
2186     */
2187    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2188       if (attrs->DMABufPlanePitches[i].IsPresent &&
2189           attrs->DMABufPlanePitches[i].Value <= 0)
2190          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2191    }
2192
2193    /**
2194     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2195     * attribute values may be given.
2196     *
2197     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2198     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2199     */
2200    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2201       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2202           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2203          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2204    }
2205
2206    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2207     * mandate it, we only accept the same modifier across all planes. */
2208    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2209       if (attrs->DMABufPlaneFds[i].IsPresent) {
2210          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2211                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2212              (attrs->DMABufPlaneModifiersLo[0].Value !=
2213                attrs->DMABufPlaneModifiersLo[i].Value) ||
2214              (attrs->DMABufPlaneModifiersHi[0].Value !=
2215                attrs->DMABufPlaneModifiersHi[i].Value))
2216             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2217       }
2218    }
2219
2220    return EGL_TRUE;
2221 }
2222
2223 /* Returns the total number of file descriptors. Zero indicates an error. */
2224 static unsigned
2225 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2226 {
2227    unsigned plane_n;
2228
2229    switch (attrs->DMABufFourCC.Value) {
2230    case DRM_FORMAT_R8:
2231    case DRM_FORMAT_RG88:
2232    case DRM_FORMAT_GR88:
2233    case DRM_FORMAT_R16:
2234    case DRM_FORMAT_GR1616:
2235    case DRM_FORMAT_RGB332:
2236    case DRM_FORMAT_BGR233:
2237    case DRM_FORMAT_XRGB4444:
2238    case DRM_FORMAT_XBGR4444:
2239    case DRM_FORMAT_RGBX4444:
2240    case DRM_FORMAT_BGRX4444:
2241    case DRM_FORMAT_ARGB4444:
2242    case DRM_FORMAT_ABGR4444:
2243    case DRM_FORMAT_RGBA4444:
2244    case DRM_FORMAT_BGRA4444:
2245    case DRM_FORMAT_XRGB1555:
2246    case DRM_FORMAT_XBGR1555:
2247    case DRM_FORMAT_RGBX5551:
2248    case DRM_FORMAT_BGRX5551:
2249    case DRM_FORMAT_ARGB1555:
2250    case DRM_FORMAT_ABGR1555:
2251    case DRM_FORMAT_RGBA5551:
2252    case DRM_FORMAT_BGRA5551:
2253    case DRM_FORMAT_RGB565:
2254    case DRM_FORMAT_BGR565:
2255    case DRM_FORMAT_RGB888:
2256    case DRM_FORMAT_BGR888:
2257    case DRM_FORMAT_XRGB8888:
2258    case DRM_FORMAT_XBGR8888:
2259    case DRM_FORMAT_RGBX8888:
2260    case DRM_FORMAT_BGRX8888:
2261    case DRM_FORMAT_ARGB8888:
2262    case DRM_FORMAT_ABGR8888:
2263    case DRM_FORMAT_RGBA8888:
2264    case DRM_FORMAT_BGRA8888:
2265    case DRM_FORMAT_XRGB2101010:
2266    case DRM_FORMAT_XBGR2101010:
2267    case DRM_FORMAT_RGBX1010102:
2268    case DRM_FORMAT_BGRX1010102:
2269    case DRM_FORMAT_ARGB2101010:
2270    case DRM_FORMAT_ABGR2101010:
2271    case DRM_FORMAT_RGBA1010102:
2272    case DRM_FORMAT_BGRA1010102:
2273    case DRM_FORMAT_YUYV:
2274    case DRM_FORMAT_YVYU:
2275    case DRM_FORMAT_UYVY:
2276    case DRM_FORMAT_VYUY:
2277       plane_n = 1;
2278       break;
2279    case DRM_FORMAT_NV12:
2280    case DRM_FORMAT_NV21:
2281    case DRM_FORMAT_NV16:
2282    case DRM_FORMAT_NV61:
2283       plane_n = 2;
2284       break;
2285    case DRM_FORMAT_YUV410:
2286    case DRM_FORMAT_YVU410:
2287    case DRM_FORMAT_YUV411:
2288    case DRM_FORMAT_YVU411:
2289    case DRM_FORMAT_YUV420:
2290    case DRM_FORMAT_YVU420:
2291    case DRM_FORMAT_YUV422:
2292    case DRM_FORMAT_YVU422:
2293    case DRM_FORMAT_YUV444:
2294    case DRM_FORMAT_YVU444:
2295       plane_n = 3;
2296       break;
2297    default:
2298       _eglError(EGL_BAD_ATTRIBUTE, "invalid format");
2299       return 0;
2300    }
2301
2302    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2303       /**
2304        * The modifiers extension spec says:
2305        *
2306        * "Modifiers may modify any attribute of a buffer import, including
2307        *  but not limited to adding extra planes to a format which
2308        *  otherwise does not have those planes. As an example, a modifier
2309        *  may add a plane for an external compression buffer to a
2310        *  single-plane format. The exact meaning and effect of any
2311        *  modifier is canonically defined by drm_fourcc.h, not as part of
2312        *  this extension."
2313        */
2314       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2315           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2316          plane_n = i + 1;
2317       }
2318    }
2319
2320    /**
2321      * The spec says:
2322      *
2323      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2324      *    incomplete, EGL_BAD_PARAMETER is generated."
2325      */
2326    for (unsigned i = 0; i < plane_n; ++i) {
2327       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2328           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2329           !attrs->DMABufPlanePitches[i].IsPresent) {
2330          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2331          return 0;
2332       }
2333    }
2334
2335    /**
2336     * The spec also says:
2337     *
2338     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2339     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2340     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2341     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2342     */
2343    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2344       if (attrs->DMABufPlaneFds[i].IsPresent ||
2345           attrs->DMABufPlaneOffsets[i].IsPresent ||
2346           attrs->DMABufPlanePitches[i].IsPresent) {
2347          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2348          return 0;
2349       }
2350    }
2351
2352    return plane_n;
2353 }
2354
2355 static EGLBoolean
2356 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2357                             EGLint max, EGLint *formats, EGLint *count)
2358 {
2359    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2360    if (max < 0 || (max > 0 && formats == NULL))
2361       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2362
2363    if (dri2_dpy->image->base.version < 15 ||
2364        dri2_dpy->image->queryDmaBufFormats == NULL)
2365       return EGL_FALSE;
2366
2367    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2368                                             formats, count))
2369       return EGL_FALSE;
2370
2371    return EGL_TRUE;
2372 }
2373
2374 static EGLBoolean
2375 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2376                              EGLint max, EGLuint64KHR *modifiers,
2377                              EGLBoolean *external_only, EGLint *count)
2378 {
2379    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2380
2381    if (max < 0)
2382       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2383
2384    if (max > 0 && modifiers == NULL)
2385       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2386
2387    if (dri2_dpy->image->base.version < 15 ||
2388        dri2_dpy->image->queryDmaBufModifiers == NULL)
2389       return EGL_FALSE;
2390
2391    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2392                                              max, modifiers,
2393                                              (unsigned int *) external_only,
2394                                              count) == false)
2395       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2396
2397    return EGL_TRUE;
2398 }
2399
2400 /**
2401  * The spec says:
2402  *
2403  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2404  *  EGL will take a reference to the dma_buf(s) which it will release at any
2405  *  time while the EGLDisplay is initialized. It is the responsibility of the
2406  *  application to close the dma_buf file descriptors."
2407  *
2408  * Therefore we must never close or otherwise modify the file descriptors.
2409  */
2410 _EGLImage *
2411 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2412                           EGLClientBuffer buffer, const EGLint *attr_list)
2413 {
2414    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2415    _EGLImage *res;
2416    _EGLImageAttribs attrs;
2417    __DRIimage *dri_image;
2418    unsigned num_fds;
2419    int fds[DMA_BUF_MAX_PLANES];
2420    int pitches[DMA_BUF_MAX_PLANES];
2421    int offsets[DMA_BUF_MAX_PLANES];
2422    uint64_t modifier;
2423    bool has_modifier = false;
2424    unsigned error;
2425
2426    /**
2427     * The spec says:
2428     *
2429     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2430     *     error EGL_BAD_PARAMETER is generated."
2431     */
2432    if (buffer != NULL) {
2433       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2434       return NULL;
2435    }
2436
2437    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2438       return NULL;
2439
2440    if (!dri2_check_dma_buf_attribs(&attrs))
2441       return NULL;
2442
2443    num_fds = dri2_check_dma_buf_format(&attrs);
2444    if (!num_fds)
2445       return NULL;
2446
2447    for (unsigned i = 0; i < num_fds; ++i) {
2448       fds[i] = attrs.DMABufPlaneFds[i].Value;
2449       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2450       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2451    }
2452
2453    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2454     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2455     * attrs.DMABufPlaneModifiersHi[0] */
2456    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2457       modifier = (uint64_t) attrs.DMABufPlaneModifiersHi[0].Value << 32;
2458       modifier |= (uint64_t) (attrs.DMABufPlaneModifiersLo[0].Value & 0xffffffff);
2459       has_modifier = true;
2460    }
2461
2462    if (has_modifier) {
2463       if (dri2_dpy->image->base.version < 15 ||
2464           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2465          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2466          return EGL_NO_IMAGE_KHR;
2467       }
2468       dri_image =
2469          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2470             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2471             modifier, fds, num_fds, pitches, offsets,
2472             attrs.DMABufYuvColorSpaceHint.Value,
2473             attrs.DMABufSampleRangeHint.Value,
2474             attrs.DMABufChromaHorizontalSiting.Value,
2475             attrs.DMABufChromaVerticalSiting.Value,
2476             &error,
2477             NULL);
2478    }
2479    else {
2480       dri_image =
2481          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2482             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2483             fds, num_fds, pitches, offsets,
2484             attrs.DMABufYuvColorSpaceHint.Value,
2485             attrs.DMABufSampleRangeHint.Value,
2486             attrs.DMABufChromaHorizontalSiting.Value,
2487             attrs.DMABufChromaVerticalSiting.Value,
2488             &error,
2489             NULL);
2490    }
2491    dri2_create_image_khr_texture_error(error);
2492
2493    if (!dri_image)
2494       return EGL_NO_IMAGE_KHR;
2495
2496    res = dri2_create_image_from_dri(disp, dri_image);
2497
2498    return res;
2499 }
2500 static _EGLImage *
2501 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2502                            const EGLint *attr_list)
2503 {
2504    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2505    struct dri2_egl_image *dri2_img;
2506    _EGLImageAttribs attrs;
2507    unsigned int dri_use, valid_mask;
2508    int format;
2509
2510    (void) drv;
2511
2512    if (!attr_list) {
2513       _eglError(EGL_BAD_PARAMETER, __func__);
2514       return EGL_NO_IMAGE_KHR;
2515    }
2516
2517    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2518       return EGL_NO_IMAGE_KHR;
2519
2520    if (attrs.Width <= 0 || attrs.Height <= 0) {
2521       _eglError(EGL_BAD_PARAMETER, __func__);
2522       return EGL_NO_IMAGE_KHR;
2523    }
2524
2525    switch (attrs.DRMBufferFormatMESA) {
2526    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2527       format = __DRI_IMAGE_FORMAT_ARGB8888;
2528       break;
2529    default:
2530       _eglError(EGL_BAD_PARAMETER, __func__);
2531       return EGL_NO_IMAGE_KHR;
2532    }
2533
2534    valid_mask =
2535       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2536       EGL_DRM_BUFFER_USE_SHARE_MESA |
2537       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2538    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2539       _eglError(EGL_BAD_PARAMETER, __func__);
2540       return EGL_NO_IMAGE_KHR;
2541    }
2542
2543    dri_use = 0;
2544    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2545       dri_use |= __DRI_IMAGE_USE_SHARE;
2546    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2547       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2548    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2549       dri_use |= __DRI_IMAGE_USE_CURSOR;
2550
2551    dri2_img = malloc(sizeof *dri2_img);
2552    if (!dri2_img) {
2553       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2554       return EGL_NO_IMAGE_KHR;
2555    }
2556
2557    _eglInitImage(&dri2_img->base, disp);
2558
2559    dri2_img->dri_image =
2560       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2561                                    attrs.Width, attrs.Height,
2562                                    format, dri_use, dri2_img);
2563    if (dri2_img->dri_image == NULL) {
2564       free(dri2_img);
2565        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2566       return EGL_NO_IMAGE_KHR;
2567    }
2568
2569    return &dri2_img->base;
2570 }
2571
2572 static EGLBoolean
2573 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2574                           EGLint *name, EGLint *handle, EGLint *stride)
2575 {
2576    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2577    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2578
2579    (void) drv;
2580
2581    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2582                                             __DRI_IMAGE_ATTRIB_NAME, name))
2583       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2584
2585    if (handle)
2586       dri2_dpy->image->queryImage(dri2_img->dri_image,
2587                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2588
2589    if (stride)
2590       dri2_dpy->image->queryImage(dri2_img->dri_image,
2591                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2592
2593    return EGL_TRUE;
2594 }
2595
2596 static EGLBoolean
2597 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2598                                      _EGLImage *img,
2599                                      EGLint *fourcc, EGLint *nplanes,
2600                                      EGLuint64KHR *modifiers)
2601 {
2602    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2603    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2604
2605    (void) drv;
2606
2607
2608    if (nplanes)
2609       dri2_dpy->image->queryImage(dri2_img->dri_image,
2610                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2611    if (fourcc)
2612       dri2_dpy->image->queryImage(dri2_img->dri_image,
2613                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2614
2615    if (modifiers)
2616       *modifiers = 0;
2617
2618    return EGL_TRUE;
2619 }
2620
2621 static EGLBoolean
2622 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2623                                int *fds, EGLint *strides, EGLint *offsets)
2624 {
2625    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2626    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2627
2628    (void) drv;
2629
2630    /* rework later to provide multiple fds/strides/offsets */
2631    if (fds)
2632       dri2_dpy->image->queryImage(dri2_img->dri_image,
2633                                   __DRI_IMAGE_ATTRIB_FD, fds);
2634
2635    if (strides)
2636       dri2_dpy->image->queryImage(dri2_img->dri_image,
2637                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2638
2639    if (offsets) {
2640       int img_offset;
2641       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2642                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2643       if (ret)
2644          offsets[0] = img_offset;
2645       else
2646          offsets[0] = 0;
2647    }
2648
2649    return EGL_TRUE;
2650 }
2651
2652 #endif
2653
2654 _EGLImage *
2655 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2656                       _EGLContext *ctx, EGLenum target,
2657                       EGLClientBuffer buffer, const EGLint *attr_list)
2658 {
2659    (void) drv;
2660
2661    switch (target) {
2662    case EGL_GL_TEXTURE_2D_KHR:
2663    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2664    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2665    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2666    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2667    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2668    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2669    case EGL_GL_TEXTURE_3D_KHR:
2670       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2671    case EGL_GL_RENDERBUFFER_KHR:
2672       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2673 #ifdef HAVE_LIBDRM
2674    case EGL_DRM_BUFFER_MESA:
2675       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2676    case EGL_LINUX_DMA_BUF_EXT:
2677       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2678 #endif
2679 #ifdef HAVE_WAYLAND_PLATFORM
2680    case EGL_WAYLAND_BUFFER_WL:
2681       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2682 #endif
2683    default:
2684       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2685       return EGL_NO_IMAGE_KHR;
2686    }
2687 }
2688
2689 static EGLBoolean
2690 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2691 {
2692    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2693    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2694
2695    (void) drv;
2696
2697    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2698    free(dri2_img);
2699
2700    return EGL_TRUE;
2701 }
2702
2703 #ifdef HAVE_WAYLAND_PLATFORM
2704
2705 static void
2706 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2707                          struct wl_drm_buffer *buffer)
2708 {
2709    _EGLDisplay *disp = user_data;
2710    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2711    __DRIimage *img;
2712    int dri_components = 0;
2713
2714    if (fd == -1)
2715       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2716                                                   buffer->width,
2717                                                   buffer->height,
2718                                                   buffer->format,
2719                                                   (int*)&name, 1,
2720                                                   buffer->stride,
2721                                                   buffer->offset,
2722                                                   NULL);
2723    else
2724       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2725                                                 buffer->width,
2726                                                 buffer->height,
2727                                                 buffer->format,
2728                                                 &fd, 1,
2729                                                 buffer->stride,
2730                                                 buffer->offset,
2731                                                 NULL);
2732
2733    if (img == NULL)
2734       return;
2735
2736    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2737
2738    buffer->driver_format = NULL;
2739    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2740       if (wl_drm_components[i].dri_components == dri_components)
2741          buffer->driver_format = &wl_drm_components[i];
2742
2743    if (buffer->driver_format == NULL)
2744       dri2_dpy->image->destroyImage(img);
2745    else
2746       buffer->driver_buffer = img;
2747 }
2748
2749 static void
2750 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2751 {
2752    _EGLDisplay *disp = user_data;
2753    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2754
2755    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2756 }
2757
2758 static EGLBoolean
2759 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2760                              struct wl_display *wl_dpy)
2761 {
2762    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2763    const struct wayland_drm_callbacks wl_drm_callbacks = {
2764       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2765       .reference_buffer = dri2_wl_reference_buffer,
2766       .release_buffer = dri2_wl_release_buffer
2767    };
2768    int flags = 0;
2769    uint64_t cap;
2770
2771    (void) drv;
2772
2773    if (dri2_dpy->wl_server_drm)
2774            return EGL_FALSE;
2775
2776    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2777        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2778        dri2_dpy->image->base.version >= 7 &&
2779        dri2_dpy->image->createImageFromFds != NULL)
2780       flags |= WAYLAND_DRM_PRIME;
2781
2782    dri2_dpy->wl_server_drm =
2783            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2784                             &wl_drm_callbacks, disp, flags);
2785
2786    if (!dri2_dpy->wl_server_drm)
2787            return EGL_FALSE;
2788
2789 #ifdef HAVE_DRM_PLATFORM
2790    /* We have to share the wl_drm instance with gbm, so gbm can convert
2791     * wl_buffers to gbm bos. */
2792    if (dri2_dpy->gbm_dri)
2793       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2794 #endif
2795
2796    return EGL_TRUE;
2797 }
2798
2799 static EGLBoolean
2800 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2801                                struct wl_display *wl_dpy)
2802 {
2803    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2804
2805    (void) drv;
2806
2807    if (!dri2_dpy->wl_server_drm)
2808            return EGL_FALSE;
2809
2810    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2811    dri2_dpy->wl_server_drm = NULL;
2812
2813    return EGL_TRUE;
2814 }
2815
2816 static EGLBoolean
2817 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2818                              struct wl_resource *buffer_resource,
2819                              EGLint attribute, EGLint *value)
2820 {
2821    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2822    struct wl_drm_buffer *buffer;
2823    const struct wl_drm_components_descriptor *format;
2824
2825    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2826    if (!buffer)
2827       return EGL_FALSE;
2828
2829    format = buffer->driver_format;
2830    switch (attribute) {
2831    case EGL_TEXTURE_FORMAT:
2832       *value = format->components;
2833       return EGL_TRUE;
2834    case EGL_WIDTH:
2835       *value = buffer->width;
2836       return EGL_TRUE;
2837    case EGL_HEIGHT:
2838       *value = buffer->height;
2839       return EGL_TRUE;
2840    }
2841
2842    return EGL_FALSE;
2843 }
2844 #endif
2845
2846 static void
2847 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2848 {
2849    p_atomic_inc(&sync->refcount);
2850 }
2851
2852 static void
2853 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2854                     struct dri2_egl_sync *dri2_sync)
2855 {
2856    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2857       switch (dri2_sync->base.Type) {
2858       case EGL_SYNC_REUSABLE_KHR:
2859          cnd_destroy(&dri2_sync->cond);
2860          break;
2861       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2862          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2863             close(dri2_sync->base.SyncFd);
2864          break;
2865       default:
2866          break;
2867       }
2868
2869       if (dri2_sync->fence)
2870          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2871
2872       free(dri2_sync);
2873    }
2874 }
2875
2876 static _EGLSync *
2877 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
2878                  EGLenum type, const EGLAttrib *attrib_list)
2879 {
2880    _EGLContext *ctx = _eglGetCurrentContext();
2881    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2882    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2883    struct dri2_egl_sync *dri2_sync;
2884    EGLint ret;
2885    pthread_condattr_t attr;
2886
2887    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2888    if (!dri2_sync) {
2889       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2890       return NULL;
2891    }
2892
2893    if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
2894       free(dri2_sync);
2895       return NULL;
2896    }
2897
2898    switch (type) {
2899    case EGL_SYNC_FENCE_KHR:
2900       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2901       if (!dri2_sync->fence) {
2902          /* Why did it fail? DRI doesn't return an error code, so we emit
2903           * a generic EGL error that doesn't communicate user error.
2904           */
2905          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2906          free(dri2_sync);
2907          return NULL;
2908       }
2909       break;
2910
2911    case EGL_SYNC_CL_EVENT_KHR:
2912       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2913                                  dri2_dpy->dri_screen,
2914                                  dri2_sync->base.CLEvent);
2915       /* this can only happen if the cl_event passed in is invalid. */
2916       if (!dri2_sync->fence) {
2917          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2918          free(dri2_sync);
2919          return NULL;
2920       }
2921
2922       /* the initial status must be "signaled" if the cl_event is signaled */
2923       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2924                                             dri2_sync->fence, 0, 0))
2925          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2926       break;
2927
2928    case EGL_SYNC_REUSABLE_KHR:
2929       /* intialize attr */
2930       ret = pthread_condattr_init(&attr);
2931
2932       if (ret) {
2933          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2934          free(dri2_sync);
2935          return NULL;
2936       }
2937
2938       /* change clock attribute to CLOCK_MONOTONIC */
2939       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2940
2941       if (ret) {
2942          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2943          free(dri2_sync);
2944          return NULL;
2945       }
2946
2947       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2948
2949       if (ret) {
2950          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2951          free(dri2_sync);
2952          return NULL;
2953       }
2954
2955       /* initial status of reusable sync must be "unsignaled" */
2956       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2957       break;
2958
2959    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2960       if (dri2_dpy->fence->create_fence_fd) {
2961          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2962                                     dri2_ctx->dri_context,
2963                                     dri2_sync->base.SyncFd);
2964       }
2965       if (!dri2_sync->fence) {
2966          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2967          free(dri2_sync);
2968          return NULL;
2969       }
2970       break;
2971    }
2972
2973    p_atomic_set(&dri2_sync->refcount, 1);
2974    return &dri2_sync->base;
2975 }
2976
2977 static EGLBoolean
2978 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
2979 {
2980    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2981    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
2982    EGLint ret = EGL_TRUE;
2983    EGLint err;
2984
2985    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
2986     * then unlock all threads possibly blocked by the reusable sync before
2987     * destroying it.
2988     */
2989    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
2990        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
2991       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2992       /* unblock all threads currently blocked by sync */
2993       err = cnd_broadcast(&dri2_sync->cond);
2994
2995       if (err) {
2996          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
2997          ret = EGL_FALSE;
2998       }
2999    }
3000
3001    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3002
3003    return ret;
3004 }
3005
3006 static EGLint
3007 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3008 {
3009    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3010    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3011
3012    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3013
3014    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3015       /* try to retrieve the actual native fence fd.. if rendering is
3016        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3017        */
3018       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3019                                                    dri2_sync->fence);
3020    }
3021
3022    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3023       /* if native fence fd still not created, return an error: */
3024       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3025       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3026    }
3027
3028    return dup(sync->SyncFd);
3029 }
3030
3031 static void
3032 dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *dpy,
3033                           EGLSetBlobFuncANDROID set,
3034                           EGLGetBlobFuncANDROID get)
3035 {
3036    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3037    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3038                                    dpy->BlobCacheSet,
3039                                    dpy->BlobCacheGet);
3040 }
3041
3042 static EGLint
3043 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3044                       EGLint flags, EGLTime timeout)
3045 {
3046    _EGLContext *ctx = _eglGetCurrentContext();
3047    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3048    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3049    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3050    unsigned wait_flags = 0;
3051
3052    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3053
3054    /* The EGL_KHR_fence_sync spec states:
3055     *
3056     *    "If no context is current for the bound API,
3057     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3058     */
3059    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3060       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3061
3062    /* the sync object should take a reference while waiting */
3063    dri2_egl_ref_sync(dri2_sync);
3064
3065    switch (sync->Type) {
3066    case EGL_SYNC_FENCE_KHR:
3067    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3068    case EGL_SYNC_CL_EVENT_KHR:
3069       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3070                                          dri2_sync->fence, wait_flags,
3071                                          timeout))
3072          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3073       else
3074          ret = EGL_TIMEOUT_EXPIRED_KHR;
3075       break;
3076
3077    case EGL_SYNC_REUSABLE_KHR:
3078       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3079           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3080          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3081          dri2_gl_flush();
3082       }
3083
3084       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3085       if (timeout == EGL_FOREVER_KHR) {
3086          mtx_lock(&dri2_sync->mutex);
3087          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3088          mtx_unlock(&dri2_sync->mutex);
3089       } else {
3090          /* if reusable sync has not been yet signaled */
3091          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3092             /* timespecs for cnd_timedwait */
3093             struct timespec current;
3094             struct timespec expire;
3095
3096             /* We override the clock to monotonic when creating the condition
3097              * variable. */
3098             clock_gettime(CLOCK_MONOTONIC, &current);
3099
3100             /* calculating when to expire */
3101             expire.tv_nsec = timeout % 1000000000L;
3102             expire.tv_sec = timeout / 1000000000L;
3103
3104             expire.tv_nsec += current.tv_nsec;
3105             expire.tv_sec += current.tv_sec;
3106
3107             /* expire.nsec now is a number between 0 and 1999999998 */
3108             if (expire.tv_nsec > 999999999L) {
3109                expire.tv_sec++;
3110                expire.tv_nsec -= 1000000000L;
3111             }
3112
3113             mtx_lock(&dri2_sync->mutex);
3114             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3115             mtx_unlock(&dri2_sync->mutex);
3116
3117             if (ret == thrd_busy) {
3118                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3119                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3120                } else {
3121                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3122                   ret = EGL_FALSE;
3123                }
3124             }
3125          }
3126       }
3127       break;
3128   }
3129   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3130
3131   return ret;
3132 }
3133
3134 static EGLBoolean
3135 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3136                       EGLenum mode)
3137 {
3138    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3139    EGLint ret;
3140
3141    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3142       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3143
3144    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3145       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3146
3147    dri2_sync->base.SyncStatus = mode;
3148
3149    if (mode == EGL_SIGNALED_KHR) {
3150       ret = cnd_broadcast(&dri2_sync->cond);
3151
3152       /* fail to broadcast */
3153       if (ret)
3154          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3155    }
3156
3157    return EGL_TRUE;
3158 }
3159
3160 static EGLint
3161 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3162 {
3163    _EGLContext *ctx = _eglGetCurrentContext();
3164    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3165    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3166    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3167
3168    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3169                                      dri2_sync->fence, 0);
3170    return EGL_TRUE;
3171 }
3172
3173 static int
3174 dri2_interop_query_device_info(_EGLDisplay *dpy, _EGLContext *ctx,
3175                                struct mesa_glinterop_device_info *out)
3176 {
3177    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3178    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3179
3180    if (!dri2_dpy->interop)
3181       return MESA_GLINTEROP_UNSUPPORTED;
3182
3183    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3184 }
3185
3186 static int
3187 dri2_interop_export_object(_EGLDisplay *dpy, _EGLContext *ctx,
3188                            struct mesa_glinterop_export_in *in,
3189                            struct mesa_glinterop_export_out *out)
3190 {
3191    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3192    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3193
3194    if (!dri2_dpy->interop)
3195       return MESA_GLINTEROP_UNSUPPORTED;
3196
3197    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3198 }
3199
3200 /**
3201  * This is the main entrypoint into the driver, called by libEGL.
3202  * Create a new _EGLDriver object and init its dispatch table.
3203  */
3204 _EGLDriver *
3205 _eglBuiltInDriver(void)
3206 {
3207    _EGLDriver *dri2_drv = calloc(1, sizeof *dri2_drv);
3208    if (!dri2_drv)
3209       return NULL;
3210
3211    _eglInitDriverFallbacks(dri2_drv);
3212    dri2_drv->API.Initialize = dri2_initialize;
3213    dri2_drv->API.Terminate = dri2_terminate;
3214    dri2_drv->API.CreateContext = dri2_create_context;
3215    dri2_drv->API.DestroyContext = dri2_destroy_context;
3216    dri2_drv->API.MakeCurrent = dri2_make_current;
3217    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3218    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3219    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3220    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3221    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3222    dri2_drv->API.WaitClient = dri2_wait_client;
3223    dri2_drv->API.WaitNative = dri2_wait_native;
3224    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3225    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3226    dri2_drv->API.SwapInterval = dri2_swap_interval;
3227    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3228    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3229    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3230    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3231    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3232    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3233    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3234    dri2_drv->API.CreateImageKHR = dri2_create_image;
3235    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3236    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3237    dri2_drv->API.QuerySurface = dri2_query_surface;
3238 #ifdef HAVE_LIBDRM
3239    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3240    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3241    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3242    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3243    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3244    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3245 #endif
3246 #ifdef HAVE_WAYLAND_PLATFORM
3247    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3248    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3249    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3250 #endif
3251    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3252    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3253    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3254    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3255    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3256    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3257    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3258    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3259    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3260    dri2_drv->API.SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs;
3261
3262    dri2_drv->Name = "DRI2";
3263
3264    return dri2_drv;
3265 }