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    { NULL, 0, 0 }
 462 };
 463
 464 static EGLBoolean
 465 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 466                      const struct dri2_extension_match *matches,
 467                      const __DRIextension **extensions,
 468                      bool optional)
 469 {
 470    int ret = EGL_TRUE;
 471    void *field;
 472
 473    for (int i = 0; extensions[i]; i++) {
 474       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 475       for (int j = 0; matches[j].name; j++) {
 476          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 477              extensions[i]->version >= matches[j].version) {
 478             field = ((char *) dri2_dpy + matches[j].offset);
 479             *(const __DRIextension **) field = extensions[i];
 480             _eglLog(_EGL_INFO, "found extension %s version %d",
 481                     extensions[i]->name, extensions[i]->version);
 482             break;
 483          }
 484       }
 485    }
 486
 487    for (int j = 0; matches[j].name; j++) {
 488       field = ((char *) dri2_dpy + matches[j].offset);
 489       if (*(const __DRIextension **) field == NULL) {
 490          if (optional) {
 491             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 492                     matches[j].name, matches[j].version);
 493          } else {
 494             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 495                     matches[j].name, matches[j].version);
 496             ret = EGL_FALSE;
 497          }
 498       }
 499    }
 500
 501    return ret;
 502 }
 503
 504 static const __DRIextension **
 505 dri2_open_driver(_EGLDisplay *disp)
 506 {
 507    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 508    const __DRIextension **extensions = NULL;
 509    char path[PATH_MAX], *search_paths, *next, *end;
 510    char *get_extensions_name;
 511    const __DRIextension **(*get_extensions)(void);
 512
 513    search_paths = NULL;
 514    if (geteuid() == getuid()) {
 515       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 516       search_paths = getenv("LIBGL_DRIVERS_PATH");
 517    }
 518    if (search_paths == NULL)
 519       search_paths = DEFAULT_DRIVER_DIR;
 520
 521    dri2_dpy->driver = NULL;
 522    end = search_paths + strlen(search_paths);
 523    for (char *p = search_paths; p < end; p = next + 1) {
 524       int len;
 525       next = strchr(p, ':');
 526       if (next == NULL)
 527          next = end;
 528
 529       len = next - p;
 530 #if GLX_USE_TLS
 531       snprintf(path, sizeof path,
 532                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 533       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 534 #endif
 535       if (dri2_dpy->driver == NULL) {
 536          snprintf(path, sizeof path,
 537                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 538          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 539          if (dri2_dpy->driver == NULL)
 540             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 541       }
 542       /* not need continue to loop all paths once the driver is found */
 543       if (dri2_dpy->driver != NULL)
 544          break;
 545    }
 546
 547    if (dri2_dpy->driver == NULL) {
 548       _eglLog(_EGL_WARNING,
 549               "DRI2: failed to open %s (search paths %s)",
 550               dri2_dpy->driver_name, search_paths);
 551       return NULL;
 552    }
 553
 554    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 555
 556    get_extensions_name = loader_get_extensions_name(dri2_dpy->driver_name);
 557    if (get_extensions_name) {
 558       get_extensions = dlsym(dri2_dpy->driver, get_extensions_name);
 559       if (get_extensions) {
 560          extensions = get_extensions();
 561       } else {
 562          _eglLog(_EGL_DEBUG, "driver does not expose %s(): %s\n",
 563                  get_extensions_name, dlerror());
 564       }
 565       free(get_extensions_name);
 566    }
 567
 568    if (!extensions)
 569       extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 570    if (extensions == NULL) {
 571       _eglLog(_EGL_WARNING,
 572               "DRI2: driver exports no extensions (%s)", dlerror());
 573       dlclose(dri2_dpy->driver);
 574    }
 575
 576    return extensions;
 577 }
 578
 579 EGLBoolean
 580 dri2_load_driver_dri3(_EGLDisplay *disp)
 581 {
 582    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 583    const __DRIextension **extensions;
 584
 585    extensions = dri2_open_driver(disp);
 586    if (!extensions)
 587       return EGL_FALSE;
 588
 589    if (!dri2_bind_extensions(dri2_dpy, dri3_driver_extensions, extensions, false)) {
 590       dlclose(dri2_dpy->driver);
 591       return EGL_FALSE;
 592    }
 593    dri2_dpy->driver_extensions = extensions;
 594
 595    return EGL_TRUE;
 596 }
 597
 598 EGLBoolean
 599 dri2_load_driver(_EGLDisplay *disp)
 600 {
 601    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 602    const __DRIextension **extensions;
 603
 604    extensions = dri2_open_driver(disp);
 605    if (!extensions)
 606       return EGL_FALSE;
 607
 608    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions, false)) {
 609       dlclose(dri2_dpy->driver);
 610       return EGL_FALSE;
 611    }
 612    dri2_dpy->driver_extensions = extensions;
 613
 614    return EGL_TRUE;
 615 }
 616
 617 EGLBoolean
 618 dri2_load_driver_swrast(_EGLDisplay *disp)
 619 {
 620    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 621    const __DRIextension **extensions;
 622
 623    extensions = dri2_open_driver(disp);
 624    if (!extensions)
 625       return EGL_FALSE;
 626
 627    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions, false)) {
 628       dlclose(dri2_dpy->driver);
 629       return EGL_FALSE;
 630    }
 631    dri2_dpy->driver_extensions = extensions;
 632
 633    return EGL_TRUE;
 634 }
 635
 636 static unsigned
 637 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 638 {
 639    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 640    unsigned int value = 0;
 641
 642    if (!rendererQuery ||
 643        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 644       return 0;
 645
 646    return value;
 647 }
 648
 649 void
 650 dri2_setup_screen(_EGLDisplay *disp)
 651 {
 652    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 653    unsigned int api_mask;
 654
 655    /*
 656     * EGL 1.5 specification defines the default value to 1. Moreover,
 657     * eglSwapInterval() is required to clamp requested value to the supported
 658     * range. Since the default value is implicitly assumed to be supported,
 659     * use it as both minimum and maximum for the platforms that do not allow
 660     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 661     * override these values already.
 662     */
 663    dri2_dpy->min_swap_interval = 1;
 664    dri2_dpy->max_swap_interval = 1;
 665    dri2_dpy->default_swap_interval = 1;
 666
 667    if (dri2_dpy->image_driver) {
 668       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 669    } else if (dri2_dpy->dri2) {
 670       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 671    } else {
 672       assert(dri2_dpy->swrast);
 673       api_mask = 1 << __DRI_API_OPENGL |
 674                  1 << __DRI_API_GLES |
 675                  1 << __DRI_API_GLES2 |
 676                  1 << __DRI_API_GLES3;
 677    }
 678
 679    disp->ClientAPIs = 0;
 680    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 681       disp->ClientAPIs |= EGL_OPENGL_BIT;
 682    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 683       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 684    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 685       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 686    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 687       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 688
 689    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 690    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 691    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 692
 693    /* Report back to EGL the bitmask of priorities supported */
 694    disp->Extensions.IMG_context_priority =
 695       dri2_renderer_query_integer(dri2_dpy,
 696                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 697
 698    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 699
 700    if (dri2_renderer_query_integer(dri2_dpy,
 701                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 702       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 703
 704    if (dri2_dpy->image_driver ||
 705        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 706        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 707       disp->Extensions.KHR_create_context = EGL_TRUE;
 708
 709       if (dri2_dpy->robustness)
 710          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 711    }
 712
 713    if (dri2_dpy->no_error)
 714       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 715
 716    if (dri2_dpy->fence) {
 717       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 718       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 719       if (dri2_dpy->fence->get_fence_from_cl_event)
 720          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 721       if (dri2_dpy->fence->base.version >= 2 &&
 722           dri2_dpy->fence->get_capabilities) {
 723          unsigned capabilities =
 724             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 725          disp->Extensions.ANDROID_native_fence_sync =
 726             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 727       }
 728    }
 729
 730    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 731
 732    if (dri2_dpy->image) {
 733       if (dri2_dpy->image->base.version >= 10 &&
 734           dri2_dpy->image->getCapabilities != NULL) {
 735          int capabilities;
 736
 737          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 738          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 739
 740          if (dri2_dpy->image->base.version >= 11)
 741             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 742       } else {
 743          disp->Extensions.MESA_drm_image = EGL_TRUE;
 744          if (dri2_dpy->image->base.version >= 11)
 745             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 746       }
 747
 748       disp->Extensions.KHR_image_base = EGL_TRUE;
 749       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 750       if (dri2_dpy->image->base.version >= 5 &&
 751           dri2_dpy->image->createImageFromTexture) {
 752          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 753          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 754
 755          if (dri2_renderer_query_integer(dri2_dpy,
 756                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 757              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 758       }
 759 #ifdef HAVE_LIBDRM
 760       if (dri2_dpy->image->base.version >= 8 &&
 761           dri2_dpy->image->createImageFromDmaBufs) {
 762          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 763       }
 764       if (dri2_dpy->image->base.version >= 15 &&
 765           dri2_dpy->image->createImageFromDmaBufs2 &&
 766           dri2_dpy->image->queryDmaBufFormats &&
 767           dri2_dpy->image->queryDmaBufModifiers) {
 768          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 769       }
 770 #endif
 771    }
 772
 773    if (dri2_dpy->flush_control)
 774       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 775 }
 776
 777 void
 778 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 779 {
 780    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 781    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 782
 783    /* Allow driconf to override applications.*/
 784    if (dri2_dpy->config)
 785       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 786                                      "vblank_mode", &vblank_mode);
 787    switch (vblank_mode) {
 788    case DRI_CONF_VBLANK_NEVER:
 789       dri2_dpy->min_swap_interval = 0;
 790       dri2_dpy->max_swap_interval = 0;
 791       dri2_dpy->default_swap_interval = 0;
 792       break;
 793    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 794       dri2_dpy->min_swap_interval = 1;
 795       dri2_dpy->max_swap_interval = max_swap_interval;
 796       dri2_dpy->default_swap_interval = 1;
 797       break;
 798    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 799       dri2_dpy->min_swap_interval = 0;
 800       dri2_dpy->max_swap_interval = max_swap_interval;
 801       dri2_dpy->default_swap_interval = 0;
 802       break;
 803    default:
 804    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 805       dri2_dpy->min_swap_interval = 0;
 806       dri2_dpy->max_swap_interval = max_swap_interval;
 807       dri2_dpy->default_swap_interval = 1;
 808       break;
 809    }
 810 }
 811
 812 /* All platforms but DRM call this function to create the screen and populate
 813  * the driver_configs. DRM inherits that information from its display - GBM.
 814  */
 815 EGLBoolean
 816 dri2_create_screen(_EGLDisplay *disp)
 817 {
 818    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 819
 820    if (dri2_dpy->image_driver) {
 821       dri2_dpy->dri_screen =
 822          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 823                                                   dri2_dpy->loader_extensions,
 824                                                   dri2_dpy->driver_extensions,
 825                                                   &dri2_dpy->driver_configs,
 826                                                   disp);
 827    } else if (dri2_dpy->dri2) {
 828       if (dri2_dpy->dri2->base.version >= 4) {
 829          dri2_dpy->dri_screen =
 830             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 831                                              dri2_dpy->loader_extensions,
 832                                              dri2_dpy->driver_extensions,
 833                                              &dri2_dpy->driver_configs, disp);
 834       } else {
 835          dri2_dpy->dri_screen =
 836             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 837                                             dri2_dpy->loader_extensions,
 838                                             &dri2_dpy->driver_configs, disp);
 839       }
 840    } else {
 841       assert(dri2_dpy->swrast);
 842       if (dri2_dpy->swrast->base.version >= 4) {
 843          dri2_dpy->dri_screen =
 844             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 845                                                dri2_dpy->driver_extensions,
 846                                                &dri2_dpy->driver_configs, disp);
 847       } else {
 848          dri2_dpy->dri_screen =
 849             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 850                                               &dri2_dpy->driver_configs, disp);
 851       }
 852    }
 853
 854    if (dri2_dpy->dri_screen == NULL) {
 855       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 856       return EGL_FALSE;
 857    }
 858
 859    dri2_dpy->own_dri_screen = true;
 860    return EGL_TRUE;
 861 }
 862
 863 EGLBoolean
 864 dri2_setup_extensions(_EGLDisplay *disp)
 865 {
 866    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 867    const struct dri2_extension_match *mandatory_core_extensions;
 868    const __DRIextension **extensions;
 869
 870    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 871
 872    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 873       mandatory_core_extensions = dri2_core_extensions;
 874    else
 875       mandatory_core_extensions = swrast_core_extensions;
 876
 877    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 878       return EGL_FALSE;
 879
 880    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 881    return EGL_TRUE;
 882 }
 883
 884 /**
 885  * Called via eglInitialize(), GLX_drv->API.Initialize().
 886  *
 887  * This must be guaranteed to be called exactly once, even if eglInitialize is
 888  * called many times (without a eglTerminate in between).
 889  */
 890 static EGLBoolean
 891 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 892 {
 893    EGLBoolean ret = EGL_FALSE;
 894    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 895
 896    /* In the case where the application calls eglMakeCurrent(context1),
 897     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 898     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 899     * initialized, as we need it to be able to free context1 correctly.
 900     *
 901     * It would probably be safest to forcibly release the display with
 902     * dri2_display_release, to make sure the display is reinitialized correctly.
 903     * However, the EGL spec states that we need to keep a reference to the
 904     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 905     * we would leak context1 as we would be missing the old display connection
 906     * to free it up correctly.
 907     */
 908    if (dri2_dpy) {
 909       dri2_dpy->ref_count++;
 910       return EGL_TRUE;
 911    }
 912
 913    /* not until swrast_dri is supported */
 914    if (disp->Options.UseFallback)
 915       return EGL_FALSE;
 916
 917    switch (disp->Platform) {
 918 #ifdef HAVE_SURFACELESS_PLATFORM
 919    case _EGL_PLATFORM_SURFACELESS:
 920       ret = dri2_initialize_surfaceless(drv, disp);
 921       break;
 922 #endif
 923 #ifdef HAVE_X11_PLATFORM
 924    case _EGL_PLATFORM_X11:
 925       ret = dri2_initialize_x11(drv, disp);
 926       break;
 927 #endif
 928 #ifdef HAVE_DRM_PLATFORM
 929    case _EGL_PLATFORM_DRM:
 930       ret = dri2_initialize_drm(drv, disp);
 931       break;
 932 #endif
 933 #ifdef HAVE_WAYLAND_PLATFORM
 934    case _EGL_PLATFORM_WAYLAND:
 935       ret = dri2_initialize_wayland(drv, disp);
 936       break;
 937 #endif
 938 #ifdef HAVE_ANDROID_PLATFORM
 939    case _EGL_PLATFORM_ANDROID:
 940       ret = dri2_initialize_android(drv, disp);
 941       break;
 942 #endif
 943    default:
 944       _eglLog(_EGL_WARNING, "No EGL platform enabled.");
 945       return EGL_FALSE;
 946    }
 947
 948    if (!ret)
 949       return EGL_FALSE;
 950
 951    dri2_dpy = dri2_egl_display(disp);
 952    dri2_dpy->ref_count++;
 953
 954    return EGL_TRUE;
 955 }
 956
 957 /**
 958  * Decrement display reference count, and free up display if necessary.
 959  */
 960 static void
 961 dri2_display_release(_EGLDisplay *disp)
 962 {
 963    struct dri2_egl_display *dri2_dpy;
 964
 965    if (!disp)
 966       return;
 967
 968    dri2_dpy = dri2_egl_display(disp);
 969
 970    assert(dri2_dpy->ref_count > 0);
 971    dri2_dpy->ref_count--;
 972
 973    if (dri2_dpy->ref_count > 0)
 974       return;
 975
 976    _eglCleanupDisplay(disp);
 977    dri2_display_destroy(disp);
 978 }
 979
 980 void
 981 dri2_display_destroy(_EGLDisplay *disp)
 982 {
 983    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 984
 985    if (dri2_dpy->own_dri_screen) {
 986       if (dri2_dpy->vtbl->close_screen_notify)
 987          dri2_dpy->vtbl->close_screen_notify(disp);
 988       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 989    }
 990    if (dri2_dpy->fd >= 0)
 991       close(dri2_dpy->fd);
 992    if (dri2_dpy->driver)
 993       dlclose(dri2_dpy->driver);
 994    free(dri2_dpy->driver_name);
 995
 996 #ifdef HAVE_WAYLAND_PLATFORM
 997    free(dri2_dpy->device_name);
 998 #endif
 999
1000    switch (disp->Platform) {
1001 #ifdef HAVE_X11_PLATFORM
1002    case _EGL_PLATFORM_X11:
1003       if (dri2_dpy->own_device) {
1004          xcb_disconnect(dri2_dpy->conn);
1005       }
1006       break;
1007 #endif
1008 #ifdef HAVE_DRM_PLATFORM
1009    case _EGL_PLATFORM_DRM:
1010       if (dri2_dpy->own_device) {
1011          gbm_device_destroy(&dri2_dpy->gbm_dri->base);
1012       }
1013       break;
1014 #endif
1015 #ifdef HAVE_WAYLAND_PLATFORM
1016    case _EGL_PLATFORM_WAYLAND:
1017       if (dri2_dpy->wl_drm)
1018           wl_drm_destroy(dri2_dpy->wl_drm);
1019       if (dri2_dpy->wl_dmabuf)
1020           zwp_linux_dmabuf_v1_destroy(dri2_dpy->wl_dmabuf);
1021       if (dri2_dpy->wl_shm)
1022           wl_shm_destroy(dri2_dpy->wl_shm);
1023       if (dri2_dpy->wl_registry)
1024          wl_registry_destroy(dri2_dpy->wl_registry);
1025       if (dri2_dpy->wl_queue)
1026          wl_event_queue_destroy(dri2_dpy->wl_queue);
1027       if (dri2_dpy->wl_dpy_wrapper)
1028          wl_proxy_wrapper_destroy(dri2_dpy->wl_dpy_wrapper);
1029       u_vector_finish(&dri2_dpy->wl_modifiers.argb8888);
1030       u_vector_finish(&dri2_dpy->wl_modifiers.xrgb8888);
1031       u_vector_finish(&dri2_dpy->wl_modifiers.rgb565);
1032       if (dri2_dpy->own_device) {
1033          wl_display_disconnect(dri2_dpy->wl_dpy);
1034       }
1035       break;
1036 #endif
1037    default:
1038       break;
1039    }
1040
1041    /* The drm platform does not create the screen/driver_configs but reuses
1042     * the ones from the gbm device. As such the gbm itself is responsible
1043     * for the cleanup.
1044     */
1045    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1046       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1047          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1048       free(dri2_dpy->driver_configs);
1049    }
1050    free(dri2_dpy);
1051    disp->DriverData = NULL;
1052 }
1053
1054 __DRIbuffer *
1055 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1056                                     unsigned int att, unsigned int format)
1057 {
1058    struct dri2_egl_display *dri2_dpy =
1059       dri2_egl_display(dri2_surf->base.Resource.Display);
1060
1061    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1062       return NULL;
1063
1064    if (!dri2_surf->local_buffers[att]) {
1065       dri2_surf->local_buffers[att] =
1066          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1067                                         dri2_surf->base.Width, dri2_surf->base.Height);
1068    }
1069
1070    return dri2_surf->local_buffers[att];
1071 }
1072
1073 void
1074 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1075 {
1076    struct dri2_egl_display *dri2_dpy =
1077       dri2_egl_display(dri2_surf->base.Resource.Display);
1078
1079    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1080       if (dri2_surf->local_buffers[i]) {
1081          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1082                                        dri2_surf->local_buffers[i]);
1083          dri2_surf->local_buffers[i] = NULL;
1084       }
1085    }
1086 }
1087
1088 /**
1089  * Called via eglTerminate(), drv->API.Terminate().
1090  *
1091  * This must be guaranteed to be called exactly once, even if eglTerminate is
1092  * called many times (without a eglInitialize in between).
1093  */
1094 static EGLBoolean
1095 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1096 {
1097    /* Release all non-current Context/Surfaces. */
1098    _eglReleaseDisplayResources(drv, disp);
1099
1100    dri2_display_release(disp);
1101
1102    return EGL_TRUE;
1103 }
1104
1105 /**
1106  * Set the error code after a call to
1107  * dri2_egl_display::dri2::createContextAttribs.
1108  */
1109 static void
1110 dri2_create_context_attribs_error(int dri_error)
1111 {
1112    EGLint egl_error;
1113
1114    switch (dri_error) {
1115    case __DRI_CTX_ERROR_SUCCESS:
1116       return;
1117
1118    case __DRI_CTX_ERROR_NO_MEMORY:
1119       egl_error = EGL_BAD_ALLOC;
1120       break;
1121
1122   /* From the EGL_KHR_create_context spec, section "Errors":
1123    *
1124    *   * If <config> does not support a client API context compatible
1125    *     with the requested API major and minor version, [...] context flags,
1126    *     and context reset notification behavior (for client API types where
1127    *     these attributes are supported), then an EGL_BAD_MATCH error is
1128    *     generated.
1129    *
1130    *   * If an OpenGL ES context is requested and the values for
1131    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1132    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1133    *     is not defined, than an EGL_BAD_MATCH error is generated.
1134    *
1135    *   * If an OpenGL context is requested, the requested version is
1136    *     greater than 3.2, and the value for attribute
1137    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1138    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1139    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1140    *     one of these bits set; or if the implementation does not support
1141    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1142    */
1143    case __DRI_CTX_ERROR_BAD_API:
1144    case __DRI_CTX_ERROR_BAD_VERSION:
1145    case __DRI_CTX_ERROR_BAD_FLAG:
1146       egl_error = EGL_BAD_MATCH;
1147       break;
1148
1149   /* From the EGL_KHR_create_context spec, section "Errors":
1150    *
1151    *   * If an attribute name or attribute value in <attrib_list> is not
1152    *     recognized (including unrecognized bits in bitmask attributes),
1153    *     then an EGL_BAD_ATTRIBUTE error is generated."
1154    */
1155    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1156    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1157       egl_error = EGL_BAD_ATTRIBUTE;
1158       break;
1159
1160    default:
1161       assert(0);
1162       egl_error = EGL_BAD_MATCH;
1163       break;
1164    }
1165
1166    _eglError(egl_error, "dri2_create_context");
1167 }
1168
1169 static bool
1170 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1171                           struct dri2_egl_display *dri2_dpy,
1172                           uint32_t *ctx_attribs,
1173                           unsigned *num_attribs)
1174 {
1175    int pos = 0;
1176
1177    assert(*num_attribs >= NUM_ATTRIBS);
1178
1179    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1180    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1181    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1182    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1183
1184    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1185       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1186        * extension, don't even try to send it the robust-access flag.
1187        * It may explode.  Instead, generate the required EGL error here.
1188        */
1189       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1190             && !dri2_dpy->robustness) {
1191          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1192          return false;
1193       }
1194
1195       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1196       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1197          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1198    }
1199
1200    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1201       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1202        * extension, don't even try to send it a reset strategy.  It may
1203        * explode.  Instead, generate the required EGL error here.
1204        */
1205       if (!dri2_dpy->robustness) {
1206          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1207          return false;
1208       }
1209
1210       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1211       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1212    }
1213
1214    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1215       unsigned val;
1216
1217       switch (dri2_ctx->base.ContextPriority) {
1218       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1219          val = __DRI_CTX_PRIORITY_HIGH;
1220          break;
1221       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1222          val = __DRI_CTX_PRIORITY_MEDIUM;
1223          break;
1224       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1225          val = __DRI_CTX_PRIORITY_LOW;
1226          break;
1227       default:
1228          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1229          return false;
1230       }
1231
1232       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1233       ctx_attribs[pos++] = val;
1234    }
1235
1236    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1237       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1238       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1239    }
1240
1241    *num_attribs = pos;
1242
1243    return true;
1244 }
1245
1246 /**
1247  * Called via eglCreateContext(), drv->API.CreateContext().
1248  */
1249 static _EGLContext *
1250 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1251                     _EGLContext *share_list, const EGLint *attrib_list)
1252 {
1253    struct dri2_egl_context *dri2_ctx;
1254    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1255    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1256    __DRIcontext *shared =
1257       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1258    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1259    const __DRIconfig *dri_config;
1260    int api;
1261    unsigned error;
1262    unsigned num_attribs = NUM_ATTRIBS;
1263    uint32_t ctx_attribs[NUM_ATTRIBS];
1264
1265    (void) drv;
1266
1267    dri2_ctx = malloc(sizeof *dri2_ctx);
1268    if (!dri2_ctx) {
1269       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1270       return NULL;
1271    }
1272
1273    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1274       goto cleanup;
1275
1276    /* The EGL_EXT_create_context_robustness spec says:
1277     *
1278     *    "Add to the eglCreateContext context creation errors: [...]
1279     *
1280     *     * If the reset notification behavior of <share_context> and the
1281     *       newly created context are different then an EGL_BAD_MATCH error is
1282     *       generated."
1283     */
1284    if (share_list && share_list->ResetNotificationStrategy !=
1285                      dri2_ctx->base.ResetNotificationStrategy) {
1286       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1287       goto cleanup;
1288    }
1289
1290    /* The EGL_KHR_create_context_no_error spec says:
1291     *
1292     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1293     *    used to create <share_context> does not match the value of
1294     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1295     */
1296    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1297       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1298       goto cleanup;
1299    }
1300
1301    switch (dri2_ctx->base.ClientAPI) {
1302    case EGL_OPENGL_ES_API:
1303       switch (dri2_ctx->base.ClientMajorVersion) {
1304       case 1:
1305          api = __DRI_API_GLES;
1306          break;
1307       case 2:
1308          api = __DRI_API_GLES2;
1309          break;
1310       case 3:
1311          api = __DRI_API_GLES3;
1312          break;
1313       default:
1314          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1315          free(dri2_ctx);
1316          return NULL;
1317       }
1318       break;
1319    case EGL_OPENGL_API:
1320       if ((dri2_ctx->base.ClientMajorVersion >= 4
1321            || (dri2_ctx->base.ClientMajorVersion == 3
1322                && dri2_ctx->base.ClientMinorVersion >= 2))
1323           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1324          api = __DRI_API_OPENGL_CORE;
1325       else
1326          api = __DRI_API_OPENGL;
1327       break;
1328    default:
1329       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1330       free(dri2_ctx);
1331       return NULL;
1332    }
1333
1334    if (conf != NULL) {
1335       /* The config chosen here isn't necessarily
1336        * used for surfaces later.
1337        * A pixmap surface will use the single config.
1338        * This opportunity depends on disabling the
1339        * doubleBufferMode check in
1340        * src/mesa/main/context.c:check_compatible()
1341        */
1342       if (dri2_config->dri_config[1][0])
1343          dri_config = dri2_config->dri_config[1][0];
1344       else
1345          dri_config = dri2_config->dri_config[0][0];
1346
1347       /* EGL_WINDOW_BIT is set only when there is a double-buffered dri_config.
1348        * This makes sure the back buffer will always be used.
1349        */
1350       if (conf->SurfaceType & EGL_WINDOW_BIT)
1351          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
1352    }
1353    else
1354       dri_config = NULL;
1355
1356    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1357                                   &num_attribs))
1358       goto cleanup;
1359
1360    if (dri2_dpy->image_driver) {
1361       dri2_ctx->dri_context =
1362          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1363                                                       api,
1364                                                       dri_config,
1365                                                       shared,
1366                                                       num_attribs / 2,
1367                                                       ctx_attribs,
1368                                                       & error,
1369                                                       dri2_ctx);
1370       dri2_create_context_attribs_error(error);
1371    } else if (dri2_dpy->dri2) {
1372       if (dri2_dpy->dri2->base.version >= 3) {
1373          dri2_ctx->dri_context =
1374             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1375                                                  api,
1376                                                  dri_config,
1377                                                  shared,
1378                                                  num_attribs / 2,
1379                                                  ctx_attribs,
1380                                                  & error,
1381                                                  dri2_ctx);
1382          dri2_create_context_attribs_error(error);
1383       } else {
1384          dri2_ctx->dri_context =
1385             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1386                                                    api,
1387                                                    dri_config,
1388                                                    shared,
1389                                                    dri2_ctx);
1390       }
1391    } else {
1392       assert(dri2_dpy->swrast);
1393       if (dri2_dpy->swrast->base.version >= 3) {
1394          dri2_ctx->dri_context =
1395             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1396                                                    api,
1397                                                    dri_config,
1398                                                    shared,
1399                                                    num_attribs / 2,
1400                                                    ctx_attribs,
1401                                                    & error,
1402                                                    dri2_ctx);
1403          dri2_create_context_attribs_error(error);
1404       } else {
1405          dri2_ctx->dri_context =
1406             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1407                                                      api,
1408                                                      dri_config,
1409                                                      shared,
1410                                                      dri2_ctx);
1411       }
1412    }
1413
1414    if (!dri2_ctx->dri_context)
1415       goto cleanup;
1416
1417    return &dri2_ctx->base;
1418
1419  cleanup:
1420    free(dri2_ctx);
1421    return NULL;
1422 }
1423
1424 /**
1425  * Called via eglDestroyContext(), drv->API.DestroyContext().
1426  */
1427 static EGLBoolean
1428 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1429 {
1430    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1431    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1432
1433    if (_eglPutContext(ctx)) {
1434       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1435       free(dri2_ctx);
1436    }
1437
1438    return EGL_TRUE;
1439 }
1440
1441 EGLBoolean
1442 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
1443         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1444 {
1445    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1446    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1447
1448    dri2_surf->out_fence_fd = -1;
1449    dri2_surf->enable_out_fence = false;
1450    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1451        dri2_dpy->fence->get_capabilities &&
1452        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1453         __DRI_FENCE_CAP_NATIVE_FD)) {
1454       dri2_surf->enable_out_fence = enable_out_fence;
1455    }
1456
1457    return _eglInitSurface(surf, dpy, type, conf, attrib_list);
1458 }
1459
1460 static void
1461 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1462 {
1463    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1464
1465    if (dri2_surf->out_fence_fd >= 0)
1466       close(dri2_surf->out_fence_fd);
1467
1468    dri2_surf->out_fence_fd = fence_fd;
1469 }
1470
1471 void
1472 dri2_fini_surface(_EGLSurface *surf)
1473 {
1474    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1475
1476    dri2_surface_set_out_fence_fd(surf, -1);
1477    dri2_surf->enable_out_fence = false;
1478 }
1479
1480 static EGLBoolean
1481 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1482 {
1483    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1484
1485    if (!_eglPutSurface(surf))
1486       return EGL_TRUE;
1487
1488    return dri2_dpy->vtbl->destroy_surface(drv, dpy, surf);
1489 }
1490
1491 static void
1492 dri2_surf_update_fence_fd(_EGLContext *ctx,
1493                           _EGLDisplay *dpy, _EGLSurface *surf)
1494 {
1495    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1496    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1497    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1498    int fence_fd = -1;
1499    void *fence;
1500
1501    if (!dri2_surf->enable_out_fence)
1502       return;
1503
1504    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1505    if (fence) {
1506       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1507                                                fence);
1508       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1509    }
1510    dri2_surface_set_out_fence_fd(surf, fence_fd);
1511 }
1512
1513 /**
1514  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1515  */
1516 static EGLBoolean
1517 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1518                   _EGLSurface *rsurf, _EGLContext *ctx)
1519 {
1520    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1521    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1522    _EGLContext *old_ctx;
1523    _EGLSurface *old_dsurf, *old_rsurf;
1524    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1525    __DRIdrawable *ddraw, *rdraw;
1526    __DRIcontext *cctx;
1527    EGLBoolean unbind;
1528
1529    if (!dri2_dpy)
1530       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1531
1532    /* make new bindings */
1533    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1534       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1535       return EGL_FALSE;
1536    }
1537
1538    /* flush before context switch */
1539    if (old_ctx)
1540       dri2_gl_flush();
1541
1542    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1543    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1544    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1545
1546    if (old_ctx) {
1547       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1548
1549       if (old_dsurf)
1550          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1551       dri2_dpy->core->unbindContext(old_cctx);
1552    }
1553
1554    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1555
1556    if (unbind || dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1557       dri2_destroy_surface(drv, disp, old_dsurf);
1558       dri2_destroy_surface(drv, disp, old_rsurf);
1559
1560       if (!unbind)
1561          dri2_dpy->ref_count++;
1562       if (old_ctx) {
1563          EGLDisplay old_disp = _eglGetDisplayHandle(old_ctx->Resource.Display);
1564          dri2_destroy_context(drv, disp, old_ctx);
1565          dri2_display_release(old_disp);
1566       }
1567
1568       return EGL_TRUE;
1569    } else {
1570       /* undo the previous _eglBindContext */
1571       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1572       assert(&dri2_ctx->base == ctx &&
1573              tmp_dsurf == dsurf &&
1574              tmp_rsurf == rsurf);
1575
1576       _eglPutSurface(dsurf);
1577       _eglPutSurface(rsurf);
1578       _eglPutContext(ctx);
1579
1580       _eglPutSurface(old_dsurf);
1581       _eglPutSurface(old_rsurf);
1582       _eglPutContext(old_ctx);
1583
1584       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1585        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1586        * as EGL_SUCCESS.
1587        */
1588       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1589    }
1590 }
1591
1592 __DRIdrawable *
1593 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1594 {
1595    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1596
1597    return dri2_surf->dri_drawable;
1598 }
1599
1600 /*
1601  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1602  */
1603 static _EGLProc
1604 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1605 {
1606    return _glapi_get_proc_address(procname);
1607 }
1608
1609 static _EGLSurface*
1610 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1611                            _EGLConfig *conf, void *native_window,
1612                            const EGLint *attrib_list)
1613 {
1614    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1615    return dri2_dpy->vtbl->create_window_surface(drv, dpy, conf, native_window,
1616                                                 attrib_list);
1617 }
1618
1619 static _EGLSurface*
1620 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1621                            _EGLConfig *conf, void *native_pixmap,
1622                            const EGLint *attrib_list)
1623 {
1624    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1625    return dri2_dpy->vtbl->create_pixmap_surface(drv, dpy, conf, native_pixmap,
1626                                                 attrib_list);
1627 }
1628
1629 static _EGLSurface*
1630 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1631                            _EGLConfig *conf, const EGLint *attrib_list)
1632 {
1633    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1634    return dri2_dpy->vtbl->create_pbuffer_surface(drv, dpy, conf, attrib_list);
1635 }
1636
1637 static EGLBoolean
1638 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1639                    EGLint interval)
1640 {
1641    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1642    if (!dri2_dpy->vtbl->swap_interval)
1643       return EGL_TRUE;
1644    return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval);
1645 }
1646
1647 /**
1648  * Asks the client API to flush any rendering to the drawable so that we can
1649  * do our swapbuffers.
1650  */
1651 void
1652 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1653 {
1654    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1655    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1656
1657    if (dri2_dpy->flush) {
1658       if (dri2_dpy->flush->base.version >= 4) {
1659          /* We know there's a current context because:
1660           *
1661           *     "If surface is not bound to the calling thread’s current
1662           *      context, an EGL_BAD_SURFACE error is generated."
1663          */
1664          _EGLContext *ctx = _eglGetCurrentContext();
1665          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1666
1667          /* From the EGL 1.4 spec (page 52):
1668           *
1669           *     "The contents of ancillary buffers are always undefined
1670           *      after calling eglSwapBuffers."
1671           */
1672          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1673                                            dri_drawable,
1674                                            __DRI2_FLUSH_DRAWABLE |
1675                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1676                                            __DRI2_THROTTLE_SWAPBUFFER);
1677       } else {
1678          dri2_dpy->flush->flush(dri_drawable);
1679       }
1680    }
1681 }
1682
1683 static EGLBoolean
1684 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1685 {
1686    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1687    _EGLContext *ctx = _eglGetCurrentContext();
1688
1689    if (ctx && surf)
1690       dri2_surf_update_fence_fd(ctx, dpy, surf);
1691    return dri2_dpy->vtbl->swap_buffers(drv, dpy, surf);
1692 }
1693
1694 static EGLBoolean
1695 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *dpy,
1696                               _EGLSurface *surf,
1697                               const EGLint *rects, EGLint n_rects)
1698 {
1699    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1700    _EGLContext *ctx = _eglGetCurrentContext();
1701
1702    if (ctx && surf)
1703       dri2_surf_update_fence_fd(ctx, dpy, surf);
1704    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, dpy, surf,
1705                                                    rects, n_rects);
1706 }
1707
1708 static EGLBoolean
1709 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1710                          EGLint numRects, const EGLint *rects)
1711 {
1712    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1713    return dri2_dpy->vtbl->swap_buffers_region(drv, dpy, surf, numRects, rects);
1714 }
1715
1716 static EGLBoolean
1717 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1718                        EGLint *rects, EGLint n_rects)
1719 {
1720    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1721    return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
1722 }
1723
1724 static EGLBoolean
1725 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1726                      EGLint x, EGLint y, EGLint width, EGLint height)
1727 {
1728    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1729    return dri2_dpy->vtbl->post_sub_buffer(drv, dpy, surf, x, y, width, height);
1730 }
1731
1732 static EGLBoolean
1733 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1734                   void *native_pixmap_target)
1735 {
1736    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1737    return dri2_dpy->vtbl->copy_buffers(drv, dpy, surf, native_pixmap_target);
1738 }
1739
1740 static EGLint
1741 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1742 {
1743    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1744    return dri2_dpy->vtbl->query_buffer_age(drv, dpy, surf);
1745 }
1746
1747 static EGLBoolean
1748 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1749 {
1750    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1751    _EGLSurface *surf = ctx->DrawSurface;
1752    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1753
1754    (void) drv;
1755
1756    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1757     * we need to copy fake to real here.*/
1758
1759    if (dri2_dpy->flush != NULL)
1760       dri2_dpy->flush->flush(dri_drawable);
1761
1762    return EGL_TRUE;
1763 }
1764
1765 static EGLBoolean
1766 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1767 {
1768    (void) drv;
1769    (void) disp;
1770
1771    if (engine != EGL_CORE_NATIVE_ENGINE)
1772       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1773    /* glXWaitX(); */
1774
1775    return EGL_TRUE;
1776 }
1777
1778 static EGLBoolean
1779 dri2_bind_tex_image(_EGLDriver *drv,
1780                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1781 {
1782    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1783    struct dri2_egl_context *dri2_ctx;
1784    _EGLContext *ctx;
1785    GLint format, target;
1786    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1787
1788    ctx = _eglGetCurrentContext();
1789    dri2_ctx = dri2_egl_context(ctx);
1790
1791    if (!_eglBindTexImage(drv, disp, surf, buffer))
1792       return EGL_FALSE;
1793
1794    switch (surf->TextureFormat) {
1795    case EGL_TEXTURE_RGB:
1796       format = __DRI_TEXTURE_FORMAT_RGB;
1797       break;
1798    case EGL_TEXTURE_RGBA:
1799       format = __DRI_TEXTURE_FORMAT_RGBA;
1800       break;
1801    default:
1802       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1803       format = __DRI_TEXTURE_FORMAT_RGBA;
1804    }
1805
1806    switch (surf->TextureTarget) {
1807    case EGL_TEXTURE_2D:
1808       target = GL_TEXTURE_2D;
1809       break;
1810    default:
1811       target = GL_TEXTURE_2D;
1812       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1813    }
1814
1815    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1816                                        target, format,
1817                                        dri_drawable);
1818
1819    return EGL_TRUE;
1820 }
1821
1822 static EGLBoolean
1823 dri2_release_tex_image(_EGLDriver *drv,
1824                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1825 {
1826    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1827    struct dri2_egl_context *dri2_ctx;
1828    _EGLContext *ctx;
1829    GLint  target;
1830    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1831
1832    ctx = _eglGetCurrentContext();
1833    dri2_ctx = dri2_egl_context(ctx);
1834
1835    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1836       return EGL_FALSE;
1837
1838    switch (surf->TextureTarget) {
1839    case EGL_TEXTURE_2D:
1840       target = GL_TEXTURE_2D;
1841       break;
1842    default:
1843       assert(0);
1844    }
1845
1846    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1847        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1848       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1849                                              target, dri_drawable);
1850    }
1851
1852    return EGL_TRUE;
1853 }
1854
1855 static _EGLImage*
1856 dri2_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
1857                   EGLenum target, EGLClientBuffer buffer,
1858                   const EGLint *attr_list)
1859 {
1860    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1861    return dri2_dpy->vtbl->create_image(drv, dpy, ctx, target, buffer,
1862                                        attr_list);
1863 }
1864
1865 static _EGLImage *
1866 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1867 {
1868    struct dri2_egl_image *dri2_img;
1869
1870    if (dri_image == NULL) {
1871       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1872       return NULL;
1873    }
1874
1875    dri2_img = malloc(sizeof *dri2_img);
1876    if (!dri2_img) {
1877       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1878       return NULL;
1879    }
1880
1881    _eglInitImage(&dri2_img->base, disp);
1882
1883    dri2_img->dri_image = dri_image;
1884
1885    return &dri2_img->base;
1886 }
1887
1888 /**
1889  * Translate a DRI Image extension error code into an EGL error code.
1890  */
1891 static EGLint
1892 egl_error_from_dri_image_error(int dri_error)
1893 {
1894    switch (dri_error) {
1895    case __DRI_IMAGE_ERROR_SUCCESS:
1896       return EGL_SUCCESS;
1897    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1898       return EGL_BAD_ALLOC;
1899    case __DRI_IMAGE_ERROR_BAD_MATCH:
1900       return EGL_BAD_MATCH;
1901    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1902       return EGL_BAD_PARAMETER;
1903    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1904       return EGL_BAD_ACCESS;
1905    default:
1906       assert(0);
1907       return EGL_BAD_ALLOC;
1908    }
1909 }
1910
1911 static _EGLImage *
1912 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1913                                    EGLClientBuffer buffer,
1914                                    const EGLint *attr_list)
1915 {
1916    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1917    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1918    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1919    __DRIimage *dri_image;
1920
1921    if (renderbuffer == 0) {
1922       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1923       return EGL_NO_IMAGE_KHR;
1924    }
1925
1926    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1927       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1928       return EGL_NO_IMAGE_KHR;
1929    }
1930
1931    if (dri2_dpy->image->base.version >= 17 &&
1932        dri2_dpy->image->createImageFromRenderbuffer2) {
1933       unsigned error = ~0;
1934
1935       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1936                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1937
1938       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1939
1940       if (!dri_image) {
1941          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1942          return EGL_NO_IMAGE_KHR;
1943       }
1944    } else {
1945       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1946                dri2_ctx->dri_context, renderbuffer, NULL);
1947       if (!dri_image) {
1948          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1949          return EGL_NO_IMAGE_KHR;
1950       }
1951    }
1952
1953    return dri2_create_image_from_dri(disp, dri_image);
1954 }
1955
1956 #ifdef HAVE_WAYLAND_PLATFORM
1957
1958 /* This structure describes how a wl_buffer maps to one or more
1959  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1960  * offsets and strides of the planes in the buffer.  This table maps a
1961  * wl_drm format code to a description of the planes in the buffer
1962  * that lets us create a __DRIimage for each of the planes. */
1963
1964 static const struct wl_drm_components_descriptor {
1965    uint32_t dri_components;
1966    EGLint components;
1967    int nplanes;
1968 } wl_drm_components[] = {
1969    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1970    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1971    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1972    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1973    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1974 };
1975
1976 static _EGLImage *
1977 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1978                                     EGLClientBuffer _buffer,
1979                                     const EGLint *attr_list)
1980 {
1981    struct wl_drm_buffer *buffer;
1982    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1983    const struct wl_drm_components_descriptor *f;
1984    __DRIimage *dri_image;
1985    _EGLImageAttribs attrs;
1986    int32_t plane;
1987
1988    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1989                                    (struct wl_resource *) _buffer);
1990    if (!buffer)
1991        return NULL;
1992
1993    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1994       return NULL;
1995
1996    plane = attrs.PlaneWL;
1997    f = buffer->driver_format;
1998    if (plane < 0 || plane >= f->nplanes) {
1999       _eglError(EGL_BAD_PARAMETER,
2000                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2001       return NULL;
2002    }
2003
2004    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2005
2006    if (dri_image == NULL) {
2007       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2008       return NULL;
2009    }
2010
2011    return dri2_create_image_from_dri(disp, dri_image);
2012 }
2013 #endif
2014
2015 static EGLBoolean
2016 dri2_get_sync_values_chromium(_EGLDisplay *dpy, _EGLSurface *surf,
2017                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2018                               EGLuint64KHR *sbc)
2019 {
2020    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2021    return dri2_dpy->vtbl->get_sync_values(dpy, surf, ust, msc, sbc);
2022 }
2023
2024 /**
2025  * Set the error code after a call to
2026  * dri2_egl_image::dri_image::createImageFromTexture.
2027  */
2028 static void
2029 dri2_create_image_khr_texture_error(int dri_error)
2030 {
2031    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2032
2033    if (egl_error != EGL_SUCCESS)
2034       _eglError(egl_error, "dri2_create_image_khr_texture");
2035 }
2036
2037 static _EGLImage *
2038 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2039                                    EGLenum target,
2040                                    EGLClientBuffer buffer,
2041                                    const EGLint *attr_list)
2042 {
2043    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2044    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2045    struct dri2_egl_image *dri2_img;
2046    GLuint texture = (GLuint) (uintptr_t) buffer;
2047    _EGLImageAttribs attrs;
2048    GLuint depth;
2049    GLenum gl_target;
2050    unsigned error;
2051
2052    if (texture == 0) {
2053       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2054       return EGL_NO_IMAGE_KHR;
2055    }
2056
2057    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2058       return EGL_NO_IMAGE_KHR;
2059
2060    switch (target) {
2061    case EGL_GL_TEXTURE_2D_KHR:
2062       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2063          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2064          return EGL_NO_IMAGE_KHR;
2065       }
2066       depth = 0;
2067       gl_target = GL_TEXTURE_2D;
2068       break;
2069    case EGL_GL_TEXTURE_3D_KHR:
2070       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2071          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2072          return EGL_NO_IMAGE_KHR;
2073       }
2074
2075       depth = attrs.GLTextureZOffset;
2076       gl_target = GL_TEXTURE_3D;
2077       break;
2078    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2079    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2080    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2081    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2082    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2083    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2084       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2085          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2086          return EGL_NO_IMAGE_KHR;
2087       }
2088
2089       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2090       gl_target = GL_TEXTURE_CUBE_MAP;
2091       break;
2092    default:
2093       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2094       return EGL_NO_IMAGE_KHR;
2095    }
2096
2097    dri2_img = malloc(sizeof *dri2_img);
2098    if (!dri2_img) {
2099       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2100       return EGL_NO_IMAGE_KHR;
2101    }
2102
2103    _eglInitImage(&dri2_img->base, disp);
2104
2105    dri2_img->dri_image =
2106       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2107                                               gl_target,
2108                                               texture,
2109                                               depth,
2110                                               attrs.GLTextureLevel,
2111                                               &error,
2112                                               dri2_img);
2113    dri2_create_image_khr_texture_error(error);
2114
2115    if (!dri2_img->dri_image) {
2116       free(dri2_img);
2117       return EGL_NO_IMAGE_KHR;
2118    }
2119    return &dri2_img->base;
2120 }
2121
2122 static EGLBoolean
2123 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
2124                    EGLint attribute, EGLint *value)
2125 {
2126    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2127    if (!dri2_dpy->vtbl->query_surface)
2128       return _eglQuerySurface(drv, dpy, surf, attribute, value);
2129    return dri2_dpy->vtbl->query_surface(drv, dpy, surf, attribute, value);
2130 }
2131
2132 static struct wl_buffer*
2133 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *dpy,
2134                                       _EGLImage *img)
2135 {
2136    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2137    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, dpy, img);
2138 }
2139
2140 #ifdef HAVE_LIBDRM
2141 static _EGLImage *
2142 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2143                                   EGLClientBuffer buffer, const EGLint *attr_list)
2144 {
2145    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2146    EGLint format, name, pitch;
2147    _EGLImageAttribs attrs;
2148    __DRIimage *dri_image;
2149
2150    name = (EGLint) (uintptr_t) buffer;
2151
2152    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2153       return NULL;
2154
2155    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2156        attrs.DRMBufferStrideMESA <= 0) {
2157       _eglError(EGL_BAD_PARAMETER,
2158                 "bad width, height or stride");
2159       return NULL;
2160    }
2161
2162    switch (attrs.DRMBufferFormatMESA) {
2163    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2164       format = __DRI_IMAGE_FORMAT_ARGB8888;
2165       pitch = attrs.DRMBufferStrideMESA;
2166       break;
2167    default:
2168       _eglError(EGL_BAD_PARAMETER,
2169                 "dri2_create_image_khr: unsupported pixmap depth");
2170       return NULL;
2171    }
2172
2173    dri_image =
2174       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2175                                            attrs.Width,
2176                                            attrs.Height,
2177                                            format,
2178                                            name,
2179                                            pitch,
2180                                            NULL);
2181
2182    return dri2_create_image_from_dri(disp, dri_image);
2183 }
2184
2185 static EGLBoolean
2186 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2187 {
2188    /**
2189      * The spec says:
2190      *
2191      * "Required attributes and their values are as follows:
2192      *
2193      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2194      *
2195      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2196      *    by drm_fourcc.h and used as the pixel_format parameter of the
2197      *    drm_mode_fb_cmd2 ioctl."
2198      *
2199      * and
2200      *
2201      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2202      *    incomplete, EGL_BAD_PARAMETER is generated."
2203      */
2204    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2205        !attrs->DMABufFourCC.IsPresent)
2206       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2207
2208    /**
2209     * Also:
2210     *
2211     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2212     *  specified for a plane's pitch or offset isn't supported by EGL,
2213     *  EGL_BAD_ACCESS is generated."
2214     */
2215    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2216       if (attrs->DMABufPlanePitches[i].IsPresent &&
2217           attrs->DMABufPlanePitches[i].Value <= 0)
2218          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2219    }
2220
2221    /**
2222     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2223     * attribute values may be given.
2224     *
2225     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2226     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2227     */
2228    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2229       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2230           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2231          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2232    }
2233
2234    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2235     * mandate it, we only accept the same modifier across all planes. */
2236    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2237       if (attrs->DMABufPlaneFds[i].IsPresent) {
2238          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2239                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2240              (attrs->DMABufPlaneModifiersLo[0].Value !=
2241                attrs->DMABufPlaneModifiersLo[i].Value) ||
2242              (attrs->DMABufPlaneModifiersHi[0].Value !=
2243                attrs->DMABufPlaneModifiersHi[i].Value))
2244             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2245       }
2246    }
2247
2248    return EGL_TRUE;
2249 }
2250
2251 /* Returns the total number of file descriptors. Zero indicates an error. */
2252 static unsigned
2253 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2254 {
2255    unsigned plane_n;
2256
2257    switch (attrs->DMABufFourCC.Value) {
2258    case DRM_FORMAT_R8:
2259    case DRM_FORMAT_RG88:
2260    case DRM_FORMAT_GR88:
2261    case DRM_FORMAT_R16:
2262    case DRM_FORMAT_GR1616:
2263    case DRM_FORMAT_RGB332:
2264    case DRM_FORMAT_BGR233:
2265    case DRM_FORMAT_XRGB4444:
2266    case DRM_FORMAT_XBGR4444:
2267    case DRM_FORMAT_RGBX4444:
2268    case DRM_FORMAT_BGRX4444:
2269    case DRM_FORMAT_ARGB4444:
2270    case DRM_FORMAT_ABGR4444:
2271    case DRM_FORMAT_RGBA4444:
2272    case DRM_FORMAT_BGRA4444:
2273    case DRM_FORMAT_XRGB1555:
2274    case DRM_FORMAT_XBGR1555:
2275    case DRM_FORMAT_RGBX5551:
2276    case DRM_FORMAT_BGRX5551:
2277    case DRM_FORMAT_ARGB1555:
2278    case DRM_FORMAT_ABGR1555:
2279    case DRM_FORMAT_RGBA5551:
2280    case DRM_FORMAT_BGRA5551:
2281    case DRM_FORMAT_RGB565:
2282    case DRM_FORMAT_BGR565:
2283    case DRM_FORMAT_RGB888:
2284    case DRM_FORMAT_BGR888:
2285    case DRM_FORMAT_XRGB8888:
2286    case DRM_FORMAT_XBGR8888:
2287    case DRM_FORMAT_RGBX8888:
2288    case DRM_FORMAT_BGRX8888:
2289    case DRM_FORMAT_ARGB8888:
2290    case DRM_FORMAT_ABGR8888:
2291    case DRM_FORMAT_RGBA8888:
2292    case DRM_FORMAT_BGRA8888:
2293    case DRM_FORMAT_XRGB2101010:
2294    case DRM_FORMAT_XBGR2101010:
2295    case DRM_FORMAT_RGBX1010102:
2296    case DRM_FORMAT_BGRX1010102:
2297    case DRM_FORMAT_ARGB2101010:
2298    case DRM_FORMAT_ABGR2101010:
2299    case DRM_FORMAT_RGBA1010102:
2300    case DRM_FORMAT_BGRA1010102:
2301    case DRM_FORMAT_YUYV:
2302    case DRM_FORMAT_YVYU:
2303    case DRM_FORMAT_UYVY:
2304    case DRM_FORMAT_VYUY:
2305       plane_n = 1;
2306       break;
2307    case DRM_FORMAT_NV12:
2308    case DRM_FORMAT_NV21:
2309    case DRM_FORMAT_NV16:
2310    case DRM_FORMAT_NV61:
2311       plane_n = 2;
2312       break;
2313    case DRM_FORMAT_YUV410:
2314    case DRM_FORMAT_YVU410:
2315    case DRM_FORMAT_YUV411:
2316    case DRM_FORMAT_YVU411:
2317    case DRM_FORMAT_YUV420:
2318    case DRM_FORMAT_YVU420:
2319    case DRM_FORMAT_YUV422:
2320    case DRM_FORMAT_YVU422:
2321    case DRM_FORMAT_YUV444:
2322    case DRM_FORMAT_YVU444:
2323       plane_n = 3;
2324       break;
2325    default:
2326       _eglError(EGL_BAD_ATTRIBUTE, "invalid format");
2327       return 0;
2328    }
2329
2330    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2331       /**
2332        * The modifiers extension spec says:
2333        *
2334        * "Modifiers may modify any attribute of a buffer import, including
2335        *  but not limited to adding extra planes to a format which
2336        *  otherwise does not have those planes. As an example, a modifier
2337        *  may add a plane for an external compression buffer to a
2338        *  single-plane format. The exact meaning and effect of any
2339        *  modifier is canonically defined by drm_fourcc.h, not as part of
2340        *  this extension."
2341        */
2342       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2343           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2344          plane_n = i + 1;
2345       }
2346    }
2347
2348    /**
2349      * The spec says:
2350      *
2351      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2352      *    incomplete, EGL_BAD_PARAMETER is generated."
2353      */
2354    for (unsigned i = 0; i < plane_n; ++i) {
2355       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2356           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2357           !attrs->DMABufPlanePitches[i].IsPresent) {
2358          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2359          return 0;
2360       }
2361    }
2362
2363    /**
2364     * The spec also says:
2365     *
2366     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2367     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2368     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2369     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2370     */
2371    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2372       if (attrs->DMABufPlaneFds[i].IsPresent ||
2373           attrs->DMABufPlaneOffsets[i].IsPresent ||
2374           attrs->DMABufPlanePitches[i].IsPresent) {
2375          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2376          return 0;
2377       }
2378    }
2379
2380    return plane_n;
2381 }
2382
2383 static EGLBoolean
2384 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2385                             EGLint max, EGLint *formats, EGLint *count)
2386 {
2387    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2388    if (max < 0 || (max > 0 && formats == NULL))
2389       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2390
2391    if (dri2_dpy->image->base.version < 15 ||
2392        dri2_dpy->image->queryDmaBufFormats == NULL)
2393       return EGL_FALSE;
2394
2395    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2396                                             formats, count))
2397       return EGL_FALSE;
2398
2399    return EGL_TRUE;
2400 }
2401
2402 static EGLBoolean
2403 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2404                              EGLint max, EGLuint64KHR *modifiers,
2405                              EGLBoolean *external_only, EGLint *count)
2406 {
2407    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2408
2409    if (max < 0)
2410       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2411
2412    if (max > 0 && modifiers == NULL)
2413       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2414
2415    if (dri2_dpy->image->base.version < 15 ||
2416        dri2_dpy->image->queryDmaBufModifiers == NULL)
2417       return EGL_FALSE;
2418
2419    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2420                                              max, modifiers,
2421                                              (unsigned int *) external_only,
2422                                              count) == false)
2423       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2424
2425    return EGL_TRUE;
2426 }
2427
2428 /**
2429  * The spec says:
2430  *
2431  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2432  *  EGL will take a reference to the dma_buf(s) which it will release at any
2433  *  time while the EGLDisplay is initialized. It is the responsibility of the
2434  *  application to close the dma_buf file descriptors."
2435  *
2436  * Therefore we must never close or otherwise modify the file descriptors.
2437  */
2438 _EGLImage *
2439 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2440                           EGLClientBuffer buffer, const EGLint *attr_list)
2441 {
2442    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2443    _EGLImage *res;
2444    _EGLImageAttribs attrs;
2445    __DRIimage *dri_image;
2446    unsigned num_fds;
2447    int fds[DMA_BUF_MAX_PLANES];
2448    int pitches[DMA_BUF_MAX_PLANES];
2449    int offsets[DMA_BUF_MAX_PLANES];
2450    uint64_t modifier;
2451    bool has_modifier = false;
2452    unsigned error;
2453
2454    /**
2455     * The spec says:
2456     *
2457     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2458     *     error EGL_BAD_PARAMETER is generated."
2459     */
2460    if (buffer != NULL) {
2461       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2462       return NULL;
2463    }
2464
2465    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2466       return NULL;
2467
2468    if (!dri2_check_dma_buf_attribs(&attrs))
2469       return NULL;
2470
2471    num_fds = dri2_check_dma_buf_format(&attrs);
2472    if (!num_fds)
2473       return NULL;
2474
2475    for (unsigned i = 0; i < num_fds; ++i) {
2476       fds[i] = attrs.DMABufPlaneFds[i].Value;
2477       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2478       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2479    }
2480
2481    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2482     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2483     * attrs.DMABufPlaneModifiersHi[0] */
2484    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2485       modifier = (uint64_t) attrs.DMABufPlaneModifiersHi[0].Value << 32;
2486       modifier |= (uint64_t) (attrs.DMABufPlaneModifiersLo[0].Value & 0xffffffff);
2487       has_modifier = true;
2488    }
2489
2490    if (has_modifier) {
2491       if (dri2_dpy->image->base.version < 15 ||
2492           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2493          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2494          return EGL_NO_IMAGE_KHR;
2495       }
2496       dri_image =
2497          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2498             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2499             modifier, fds, num_fds, pitches, offsets,
2500             attrs.DMABufYuvColorSpaceHint.Value,
2501             attrs.DMABufSampleRangeHint.Value,
2502             attrs.DMABufChromaHorizontalSiting.Value,
2503             attrs.DMABufChromaVerticalSiting.Value,
2504             &error,
2505             NULL);
2506    }
2507    else {
2508       dri_image =
2509          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2510             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2511             fds, num_fds, pitches, offsets,
2512             attrs.DMABufYuvColorSpaceHint.Value,
2513             attrs.DMABufSampleRangeHint.Value,
2514             attrs.DMABufChromaHorizontalSiting.Value,
2515             attrs.DMABufChromaVerticalSiting.Value,
2516             &error,
2517             NULL);
2518    }
2519    dri2_create_image_khr_texture_error(error);
2520
2521    if (!dri_image)
2522       return EGL_NO_IMAGE_KHR;
2523
2524    res = dri2_create_image_from_dri(disp, dri_image);
2525
2526    return res;
2527 }
2528 static _EGLImage *
2529 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2530                            const EGLint *attr_list)
2531 {
2532    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2533    struct dri2_egl_image *dri2_img;
2534    _EGLImageAttribs attrs;
2535    unsigned int dri_use, valid_mask;
2536    int format;
2537
2538    (void) drv;
2539
2540    if (!attr_list) {
2541       _eglError(EGL_BAD_PARAMETER, __func__);
2542       return EGL_NO_IMAGE_KHR;
2543    }
2544
2545    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2546       return EGL_NO_IMAGE_KHR;
2547
2548    if (attrs.Width <= 0 || attrs.Height <= 0) {
2549       _eglError(EGL_BAD_PARAMETER, __func__);
2550       return EGL_NO_IMAGE_KHR;
2551    }
2552
2553    switch (attrs.DRMBufferFormatMESA) {
2554    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2555       format = __DRI_IMAGE_FORMAT_ARGB8888;
2556       break;
2557    default:
2558       _eglError(EGL_BAD_PARAMETER, __func__);
2559       return EGL_NO_IMAGE_KHR;
2560    }
2561
2562    valid_mask =
2563       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2564       EGL_DRM_BUFFER_USE_SHARE_MESA |
2565       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2566    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2567       _eglError(EGL_BAD_PARAMETER, __func__);
2568       return EGL_NO_IMAGE_KHR;
2569    }
2570
2571    dri_use = 0;
2572    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2573       dri_use |= __DRI_IMAGE_USE_SHARE;
2574    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2575       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2576    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2577       dri_use |= __DRI_IMAGE_USE_CURSOR;
2578
2579    dri2_img = malloc(sizeof *dri2_img);
2580    if (!dri2_img) {
2581       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2582       return EGL_NO_IMAGE_KHR;
2583    }
2584
2585    _eglInitImage(&dri2_img->base, disp);
2586
2587    dri2_img->dri_image =
2588       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2589                                    attrs.Width, attrs.Height,
2590                                    format, dri_use, dri2_img);
2591    if (dri2_img->dri_image == NULL) {
2592       free(dri2_img);
2593        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2594       return EGL_NO_IMAGE_KHR;
2595    }
2596
2597    return &dri2_img->base;
2598 }
2599
2600 static EGLBoolean
2601 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2602                           EGLint *name, EGLint *handle, EGLint *stride)
2603 {
2604    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2605    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2606
2607    (void) drv;
2608
2609    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2610                                             __DRI_IMAGE_ATTRIB_NAME, name))
2611       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2612
2613    if (handle)
2614       dri2_dpy->image->queryImage(dri2_img->dri_image,
2615                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2616
2617    if (stride)
2618       dri2_dpy->image->queryImage(dri2_img->dri_image,
2619                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2620
2621    return EGL_TRUE;
2622 }
2623
2624 static EGLBoolean
2625 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2626                                      _EGLImage *img,
2627                                      EGLint *fourcc, EGLint *nplanes,
2628                                      EGLuint64KHR *modifiers)
2629 {
2630    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2631    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2632
2633    (void) drv;
2634
2635
2636    if (nplanes)
2637       dri2_dpy->image->queryImage(dri2_img->dri_image,
2638                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2639    if (fourcc)
2640       dri2_dpy->image->queryImage(dri2_img->dri_image,
2641                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2642
2643    if (modifiers)
2644       *modifiers = 0;
2645
2646    return EGL_TRUE;
2647 }
2648
2649 static EGLBoolean
2650 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2651                                int *fds, EGLint *strides, EGLint *offsets)
2652 {
2653    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2654    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2655
2656    (void) drv;
2657
2658    /* rework later to provide multiple fds/strides/offsets */
2659    if (fds)
2660       dri2_dpy->image->queryImage(dri2_img->dri_image,
2661                                   __DRI_IMAGE_ATTRIB_FD, fds);
2662
2663    if (strides)
2664       dri2_dpy->image->queryImage(dri2_img->dri_image,
2665                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2666
2667    if (offsets) {
2668       int img_offset;
2669       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2670                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2671       if (ret)
2672          offsets[0] = img_offset;
2673       else
2674          offsets[0] = 0;
2675    }
2676
2677    return EGL_TRUE;
2678 }
2679
2680 #endif
2681
2682 _EGLImage *
2683 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2684                       _EGLContext *ctx, EGLenum target,
2685                       EGLClientBuffer buffer, const EGLint *attr_list)
2686 {
2687    (void) drv;
2688
2689    switch (target) {
2690    case EGL_GL_TEXTURE_2D_KHR:
2691    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2692    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2693    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2694    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2695    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2696    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2697    case EGL_GL_TEXTURE_3D_KHR:
2698       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2699    case EGL_GL_RENDERBUFFER_KHR:
2700       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2701 #ifdef HAVE_LIBDRM
2702    case EGL_DRM_BUFFER_MESA:
2703       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2704    case EGL_LINUX_DMA_BUF_EXT:
2705       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2706 #endif
2707 #ifdef HAVE_WAYLAND_PLATFORM
2708    case EGL_WAYLAND_BUFFER_WL:
2709       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2710 #endif
2711    default:
2712       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2713       return EGL_NO_IMAGE_KHR;
2714    }
2715 }
2716
2717 static EGLBoolean
2718 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2719 {
2720    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2721    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2722
2723    (void) drv;
2724
2725    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2726    free(dri2_img);
2727
2728    return EGL_TRUE;
2729 }
2730
2731 #ifdef HAVE_WAYLAND_PLATFORM
2732
2733 static void
2734 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2735                          struct wl_drm_buffer *buffer)
2736 {
2737    _EGLDisplay *disp = user_data;
2738    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2739    __DRIimage *img;
2740    int dri_components = 0;
2741
2742    if (fd == -1)
2743       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2744                                                   buffer->width,
2745                                                   buffer->height,
2746                                                   buffer->format,
2747                                                   (int*)&name, 1,
2748                                                   buffer->stride,
2749                                                   buffer->offset,
2750                                                   NULL);
2751    else
2752       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2753                                                 buffer->width,
2754                                                 buffer->height,
2755                                                 buffer->format,
2756                                                 &fd, 1,
2757                                                 buffer->stride,
2758                                                 buffer->offset,
2759                                                 NULL);
2760
2761    if (img == NULL)
2762       return;
2763
2764    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2765
2766    buffer->driver_format = NULL;
2767    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2768       if (wl_drm_components[i].dri_components == dri_components)
2769          buffer->driver_format = &wl_drm_components[i];
2770
2771    if (buffer->driver_format == NULL)
2772       dri2_dpy->image->destroyImage(img);
2773    else
2774       buffer->driver_buffer = img;
2775 }
2776
2777 static void
2778 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2779 {
2780    _EGLDisplay *disp = user_data;
2781    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2782
2783    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2784 }
2785
2786 static EGLBoolean
2787 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2788                              struct wl_display *wl_dpy)
2789 {
2790    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2791    const struct wayland_drm_callbacks wl_drm_callbacks = {
2792       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2793       .reference_buffer = dri2_wl_reference_buffer,
2794       .release_buffer = dri2_wl_release_buffer
2795    };
2796    int flags = 0;
2797    uint64_t cap;
2798
2799    (void) drv;
2800
2801    if (dri2_dpy->wl_server_drm)
2802            return EGL_FALSE;
2803
2804    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2805        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2806        dri2_dpy->image->base.version >= 7 &&
2807        dri2_dpy->image->createImageFromFds != NULL)
2808       flags |= WAYLAND_DRM_PRIME;
2809
2810    dri2_dpy->wl_server_drm =
2811            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2812                             &wl_drm_callbacks, disp, flags);
2813
2814    if (!dri2_dpy->wl_server_drm)
2815            return EGL_FALSE;
2816
2817 #ifdef HAVE_DRM_PLATFORM
2818    /* We have to share the wl_drm instance with gbm, so gbm can convert
2819     * wl_buffers to gbm bos. */
2820    if (dri2_dpy->gbm_dri)
2821       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2822 #endif
2823
2824    return EGL_TRUE;
2825 }
2826
2827 static EGLBoolean
2828 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2829                                struct wl_display *wl_dpy)
2830 {
2831    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2832
2833    (void) drv;
2834
2835    if (!dri2_dpy->wl_server_drm)
2836            return EGL_FALSE;
2837
2838    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2839    dri2_dpy->wl_server_drm = NULL;
2840
2841    return EGL_TRUE;
2842 }
2843
2844 static EGLBoolean
2845 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2846                              struct wl_resource *buffer_resource,
2847                              EGLint attribute, EGLint *value)
2848 {
2849    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2850    struct wl_drm_buffer *buffer;
2851    const struct wl_drm_components_descriptor *format;
2852
2853    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2854    if (!buffer)
2855       return EGL_FALSE;
2856
2857    format = buffer->driver_format;
2858    switch (attribute) {
2859    case EGL_TEXTURE_FORMAT:
2860       *value = format->components;
2861       return EGL_TRUE;
2862    case EGL_WIDTH:
2863       *value = buffer->width;
2864       return EGL_TRUE;
2865    case EGL_HEIGHT:
2866       *value = buffer->height;
2867       return EGL_TRUE;
2868    }
2869
2870    return EGL_FALSE;
2871 }
2872 #endif
2873
2874 static void
2875 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2876 {
2877    p_atomic_inc(&sync->refcount);
2878 }
2879
2880 static void
2881 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2882                     struct dri2_egl_sync *dri2_sync)
2883 {
2884    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2885       switch (dri2_sync->base.Type) {
2886       case EGL_SYNC_REUSABLE_KHR:
2887          cnd_destroy(&dri2_sync->cond);
2888          break;
2889       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2890          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2891             close(dri2_sync->base.SyncFd);
2892          break;
2893       default:
2894          break;
2895       }
2896
2897       if (dri2_sync->fence)
2898          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2899
2900       free(dri2_sync);
2901    }
2902 }
2903
2904 static _EGLSync *
2905 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
2906                  EGLenum type, const EGLAttrib *attrib_list)
2907 {
2908    _EGLContext *ctx = _eglGetCurrentContext();
2909    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2910    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2911    struct dri2_egl_sync *dri2_sync;
2912    EGLint ret;
2913    pthread_condattr_t attr;
2914
2915    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2916    if (!dri2_sync) {
2917       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2918       return NULL;
2919    }
2920
2921    if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
2922       free(dri2_sync);
2923       return NULL;
2924    }
2925
2926    switch (type) {
2927    case EGL_SYNC_FENCE_KHR:
2928       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2929       if (!dri2_sync->fence) {
2930          /* Why did it fail? DRI doesn't return an error code, so we emit
2931           * a generic EGL error that doesn't communicate user error.
2932           */
2933          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2934          free(dri2_sync);
2935          return NULL;
2936       }
2937       break;
2938
2939    case EGL_SYNC_CL_EVENT_KHR:
2940       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2941                                  dri2_dpy->dri_screen,
2942                                  dri2_sync->base.CLEvent);
2943       /* this can only happen if the cl_event passed in is invalid. */
2944       if (!dri2_sync->fence) {
2945          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2946          free(dri2_sync);
2947          return NULL;
2948       }
2949
2950       /* the initial status must be "signaled" if the cl_event is signaled */
2951       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2952                                             dri2_sync->fence, 0, 0))
2953          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2954       break;
2955
2956    case EGL_SYNC_REUSABLE_KHR:
2957       /* intialize attr */
2958       ret = pthread_condattr_init(&attr);
2959
2960       if (ret) {
2961          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2962          free(dri2_sync);
2963          return NULL;
2964       }
2965
2966       /* change clock attribute to CLOCK_MONOTONIC */
2967       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2968
2969       if (ret) {
2970          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2971          free(dri2_sync);
2972          return NULL;
2973       }
2974
2975       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2976
2977       if (ret) {
2978          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2979          free(dri2_sync);
2980          return NULL;
2981       }
2982
2983       /* initial status of reusable sync must be "unsignaled" */
2984       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2985       break;
2986
2987    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2988       if (dri2_dpy->fence->create_fence_fd) {
2989          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2990                                     dri2_ctx->dri_context,
2991                                     dri2_sync->base.SyncFd);
2992       }
2993       if (!dri2_sync->fence) {
2994          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2995          free(dri2_sync);
2996          return NULL;
2997       }
2998       break;
2999    }
3000
3001    p_atomic_set(&dri2_sync->refcount, 1);
3002    return &dri2_sync->base;
3003 }
3004
3005 static EGLBoolean
3006 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3007 {
3008    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3009    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3010    EGLint ret = EGL_TRUE;
3011    EGLint err;
3012
3013    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3014     * then unlock all threads possibly blocked by the reusable sync before
3015     * destroying it.
3016     */
3017    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3018        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3019       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3020       /* unblock all threads currently blocked by sync */
3021       err = cnd_broadcast(&dri2_sync->cond);
3022
3023       if (err) {
3024          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3025          ret = EGL_FALSE;
3026       }
3027    }
3028
3029    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3030
3031    return ret;
3032 }
3033
3034 static EGLint
3035 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3036 {
3037    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3038    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3039
3040    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3041
3042    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3043       /* try to retrieve the actual native fence fd.. if rendering is
3044        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3045        */
3046       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3047                                                    dri2_sync->fence);
3048    }
3049
3050    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3051       /* if native fence fd still not created, return an error: */
3052       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3053       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3054    }
3055
3056    return dup(sync->SyncFd);
3057 }
3058
3059 static EGLint
3060 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3061                       EGLint flags, EGLTime timeout)
3062 {
3063    _EGLContext *ctx = _eglGetCurrentContext();
3064    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3065    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3066    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3067    unsigned wait_flags = 0;
3068
3069    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3070
3071    /* The EGL_KHR_fence_sync spec states:
3072     *
3073     *    "If no context is current for the bound API,
3074     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3075     */
3076    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3077       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3078
3079    /* the sync object should take a reference while waiting */
3080    dri2_egl_ref_sync(dri2_sync);
3081
3082    switch (sync->Type) {
3083    case EGL_SYNC_FENCE_KHR:
3084    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3085    case EGL_SYNC_CL_EVENT_KHR:
3086       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3087                                          dri2_sync->fence, wait_flags,
3088                                          timeout))
3089          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3090       else
3091          ret = EGL_TIMEOUT_EXPIRED_KHR;
3092       break;
3093
3094    case EGL_SYNC_REUSABLE_KHR:
3095       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3096           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3097          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3098          dri2_gl_flush();
3099       }
3100
3101       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3102       if (timeout == EGL_FOREVER_KHR) {
3103          mtx_lock(&dri2_sync->mutex);
3104          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3105          mtx_unlock(&dri2_sync->mutex);
3106       } else {
3107          /* if reusable sync has not been yet signaled */
3108          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3109             /* timespecs for cnd_timedwait */
3110             struct timespec current;
3111             struct timespec expire;
3112
3113             /* We override the clock to monotonic when creating the condition
3114              * variable. */
3115             clock_gettime(CLOCK_MONOTONIC, &current);
3116
3117             /* calculating when to expire */
3118             expire.tv_nsec = timeout % 1000000000L;
3119             expire.tv_sec = timeout / 1000000000L;
3120
3121             expire.tv_nsec += current.tv_nsec;
3122             expire.tv_sec += current.tv_sec;
3123
3124             /* expire.nsec now is a number between 0 and 1999999998 */
3125             if (expire.tv_nsec > 999999999L) {
3126                expire.tv_sec++;
3127                expire.tv_nsec -= 1000000000L;
3128             }
3129
3130             mtx_lock(&dri2_sync->mutex);
3131             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3132             mtx_unlock(&dri2_sync->mutex);
3133
3134             if (ret == thrd_busy) {
3135                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3136                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3137                } else {
3138                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3139                   ret = EGL_FALSE;
3140                }
3141             }
3142          }
3143       }
3144       break;
3145   }
3146   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3147
3148   return ret;
3149 }
3150
3151 static EGLBoolean
3152 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3153                       EGLenum mode)
3154 {
3155    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3156    EGLint ret;
3157
3158    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3159       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3160
3161    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3162       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3163
3164    dri2_sync->base.SyncStatus = mode;
3165
3166    if (mode == EGL_SIGNALED_KHR) {
3167       ret = cnd_broadcast(&dri2_sync->cond);
3168
3169       /* fail to broadcast */
3170       if (ret)
3171          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3172    }
3173
3174    return EGL_TRUE;
3175 }
3176
3177 static EGLint
3178 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3179 {
3180    _EGLContext *ctx = _eglGetCurrentContext();
3181    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3182    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3183    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3184
3185    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3186                                      dri2_sync->fence, 0);
3187    return EGL_TRUE;
3188 }
3189
3190 static int
3191 dri2_interop_query_device_info(_EGLDisplay *dpy, _EGLContext *ctx,
3192                                struct mesa_glinterop_device_info *out)
3193 {
3194    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3195    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3196
3197    if (!dri2_dpy->interop)
3198       return MESA_GLINTEROP_UNSUPPORTED;
3199
3200    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3201 }
3202
3203 static int
3204 dri2_interop_export_object(_EGLDisplay *dpy, _EGLContext *ctx,
3205                            struct mesa_glinterop_export_in *in,
3206                            struct mesa_glinterop_export_out *out)
3207 {
3208    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3209    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3210
3211    if (!dri2_dpy->interop)
3212       return MESA_GLINTEROP_UNSUPPORTED;
3213
3214    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3215 }
3216
3217 /**
3218  * This is the main entrypoint into the driver, called by libEGL.
3219  * Create a new _EGLDriver object and init its dispatch table.
3220  */
3221 _EGLDriver *
3222 _eglBuiltInDriver(void)
3223 {
3224    _EGLDriver *dri2_drv = calloc(1, sizeof *dri2_drv);
3225    if (!dri2_drv)
3226       return NULL;
3227
3228    _eglInitDriverFallbacks(dri2_drv);
3229    dri2_drv->API.Initialize = dri2_initialize;
3230    dri2_drv->API.Terminate = dri2_terminate;
3231    dri2_drv->API.CreateContext = dri2_create_context;
3232    dri2_drv->API.DestroyContext = dri2_destroy_context;
3233    dri2_drv->API.MakeCurrent = dri2_make_current;
3234    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3235    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3236    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3237    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3238    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3239    dri2_drv->API.WaitClient = dri2_wait_client;
3240    dri2_drv->API.WaitNative = dri2_wait_native;
3241    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3242    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3243    dri2_drv->API.SwapInterval = dri2_swap_interval;
3244    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3245    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3246    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3247    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3248    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3249    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3250    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3251    dri2_drv->API.CreateImageKHR = dri2_create_image;
3252    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3253    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3254    dri2_drv->API.QuerySurface = dri2_query_surface;
3255 #ifdef HAVE_LIBDRM
3256    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3257    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3258    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3259    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3260    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3261    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3262 #endif
3263 #ifdef HAVE_WAYLAND_PLATFORM
3264    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3265    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3266    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3267 #endif
3268    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3269    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3270    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3271    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3272    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3273    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3274    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3275    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3276    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3277
3278    dri2_drv->Name = "DRI2";
3279
3280    return dri2_drv;
3281 }