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 static void
  96 dri_set_background_context(void *loaderPrivate)
  97 {
  98    _EGLContext *ctx = _eglGetCurrentContext();
  99    _EGLThreadInfo *t = _eglGetCurrentThread();
 100
 101    _eglBindContextToThread(ctx, t);
 102 }
 103
 104 static GLboolean
 105 dri_is_thread_safe(void *loaderPrivate)
 106 {
 107    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 108    _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 109
 110 #ifdef HAVE_X11_PLATFORM
 111    Display *xdpy = (Display*)display->PlatformDisplay;
 112
 113    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 114     * platform
 115     *
 116     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 117     * It wll be NULL if XInitThreads wasn't called.
 118     */
 119    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 120       return false;
 121 #endif
 122
 123 #ifdef HAVE_WAYLAND_PLATFORM
 124    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 125       return true;
 126 #endif
 127
 128    return true;
 129 }
 130
 131 const __DRIbackgroundCallableExtension background_callable_extension = {
 132    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 133
 134    .setBackgroundContext = dri_set_background_context,
 135    .isThreadSafe         = dri_is_thread_safe,
 136 };
 137
 138 const __DRIuseInvalidateExtension use_invalidate = {
 139    .base = { __DRI_USE_INVALIDATE, 1 }
 140 };
 141
 142 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 143    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 144    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 145    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,
 146    [__DRI_ATTRIB_GREEN_SIZE]            = EGL_GREEN_SIZE,
 147    [__DRI_ATTRIB_BLUE_SIZE]             = EGL_BLUE_SIZE,
 148    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 149    [__DRI_ATTRIB_ALPHA_SIZE]            = EGL_ALPHA_SIZE,
 150    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 151    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 152    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 153    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 154    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 155    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 156    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 157    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 158    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 159    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 160 };
 161
 162 const __DRIconfig *
 163 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 164                     EGLenum colorspace)
 165 {
 166    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 167    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 168
 169    return conf->dri_config[double_buffer][srgb];
 170 }
 171
 172 static EGLBoolean
 173 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 174 {
 175    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 176       return EGL_FALSE;
 177
 178    if (!_eglMatchConfig(conf, criteria))
 179       return EGL_FALSE;
 180
 181    return EGL_TRUE;
 182 }
 183
 184 struct dri2_egl_config *
 185 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 186                 EGLint surface_type, const EGLint *attr_list,
 187                 const unsigned int *rgba_masks)
 188 {
 189    struct dri2_egl_config *conf;
 190    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 191    _EGLConfig base;
 192    unsigned int attrib, value, double_buffer;
 193    bool srgb = false;
 194    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 195    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 196    _EGLConfig *matching_config;
 197    EGLint num_configs = 0;
 198    EGLint config_id;
 199
 200    _eglInitConfig(&base, disp, id);
 201
 202    double_buffer = 0;
 203    bind_to_texture_rgb = 0;
 204    bind_to_texture_rgba = 0;
 205
 206    for (int i = 0; dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib,
 207                                                      &value); ++i) {
 208       switch (attrib) {
 209       case __DRI_ATTRIB_RENDER_TYPE:
 210          if (value & __DRI_ATTRIB_RGBA_BIT)
 211             value = EGL_RGB_BUFFER;
 212          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 213             value = EGL_LUMINANCE_BUFFER;
 214          else
 215             return NULL;
 216          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 217          break;
 218
 219       case __DRI_ATTRIB_CONFIG_CAVEAT:
 220          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 221             value = EGL_NON_CONFORMANT_CONFIG;
 222          else if (value & __DRI_ATTRIB_SLOW_BIT)
 223             value = EGL_SLOW_CONFIG;
 224          else
 225             value = EGL_NONE;
 226          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 227          break;
 228
 229       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 230          bind_to_texture_rgb = value;
 231          break;
 232
 233       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 234          bind_to_texture_rgba = value;
 235          break;
 236
 237       case __DRI_ATTRIB_DOUBLE_BUFFER:
 238          double_buffer = value;
 239          break;
 240
 241       case __DRI_ATTRIB_RED_MASK:
 242          dri_masks[0] = value;
 243          break;
 244
 245       case __DRI_ATTRIB_GREEN_MASK:
 246          dri_masks[1] = value;
 247          break;
 248
 249       case __DRI_ATTRIB_BLUE_MASK:
 250          dri_masks[2] = value;
 251          break;
 252
 253       case __DRI_ATTRIB_ALPHA_MASK:
 254          dri_masks[3] = value;
 255          break;
 256
 257       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 258       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 259       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 260       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 261          /* Don't expose visuals with the accumulation buffer. */
 262          if (value > 0)
 263             return NULL;
 264          break;
 265
 266       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 267          srgb = value != 0;
 268          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 269             return NULL;
 270          break;
 271
 272       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 273          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 274                           _EGL_MAX_PBUFFER_WIDTH);
 275          break;
 276       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 277          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 278                           _EGL_MAX_PBUFFER_HEIGHT);
 279          break;
 280
 281       default:
 282          key = dri2_to_egl_attribute_map[attrib];
 283          if (key != 0)
 284             _eglSetConfigKey(&base, key, value);
 285          break;
 286       }
 287    }
 288
 289    if (attr_list)
 290       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 291          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 292
 293    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 294       return NULL;
 295
 296    base.NativeRenderable = EGL_TRUE;
 297
 298    base.SurfaceType = surface_type;
 299    if (surface_type & (EGL_PBUFFER_BIT |
 300        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 301       base.BindToTextureRGB = bind_to_texture_rgb;
 302       if (base.AlphaSize > 0)
 303          base.BindToTextureRGBA = bind_to_texture_rgba;
 304    }
 305
 306    base.RenderableType = disp->ClientAPIs;
 307    base.Conformant = disp->ClientAPIs;
 308
 309    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 310    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 311
 312    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 313       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 314       return NULL;
 315    }
 316
 317    config_id = base.ConfigID;
 318    base.ConfigID    = EGL_DONT_CARE;
 319    base.SurfaceType = EGL_DONT_CARE;
 320    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 321                                  (_EGLArrayForEach) dri2_match_config, &base);
 322
 323    if (num_configs == 1) {
 324       conf = (struct dri2_egl_config *) matching_config;
 325
 326       if (!conf->dri_config[double_buffer][srgb])
 327          conf->dri_config[double_buffer][srgb] = dri_config;
 328       else
 329          /* a similar config type is already added (unlikely) => discard */
 330          return NULL;
 331    }
 332    else if (num_configs == 0) {
 333       conf = calloc(1, sizeof *conf);
 334       if (conf == NULL)
 335          return NULL;
 336
 337       conf->dri_config[double_buffer][srgb] = dri_config;
 338
 339       memcpy(&conf->base, &base, sizeof base);
 340       conf->base.SurfaceType = 0;
 341       conf->base.ConfigID = config_id;
 342
 343       _eglLinkConfig(&conf->base);
 344    }
 345    else {
 346       assert(0);
 347       return NULL;
 348    }
 349
 350    if (double_buffer) {
 351       surface_type &= ~EGL_PIXMAP_BIT;
 352    }
 353
 354    /* No support for pbuffer + MSAA for now.
 355     *
 356     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 357     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 358     */
 359    if (base.Samples) {
 360       surface_type &= ~EGL_PBUFFER_BIT;
 361    }
 362
 363    conf->base.SurfaceType |= surface_type;
 364
 365    return conf;
 366 }
 367
 368 __DRIimage *
 369 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 370 {
 371    _EGLDisplay *disp = data;
 372    struct dri2_egl_image *dri2_img;
 373    _EGLImage *img;
 374
 375    (void) screen;
 376
 377    img = _eglLookupImage(image, disp);
 378    if (img == NULL) {
 379       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 380       return NULL;
 381    }
 382
 383    dri2_img = dri2_egl_image(image);
 384
 385    return dri2_img->dri_image;
 386 }
 387
 388 const __DRIimageLookupExtension image_lookup_extension = {
 389    .base = { __DRI_IMAGE_LOOKUP, 1 },
 390
 391    .lookupEGLImage       = dri2_lookup_egl_image
 392 };
 393
 394 struct dri2_extension_match {
 395    const char *name;
 396    int version;
 397    int offset;
 398 };
 399
 400 static const struct dri2_extension_match dri3_driver_extensions[] = {
 401    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 402    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 403    { NULL, 0, 0 }
 404 };
 405
 406 static const struct dri2_extension_match dri2_driver_extensions[] = {
 407    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 408    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 409    { NULL, 0, 0 }
 410 };
 411
 412 static const struct dri2_extension_match dri2_core_extensions[] = {
 413    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 414    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 415    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 416    { NULL, 0, 0 }
 417 };
 418
 419 static const struct dri2_extension_match swrast_driver_extensions[] = {
 420    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 421    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 422    { NULL, 0, 0 }
 423 };
 424
 425 static const struct dri2_extension_match swrast_core_extensions[] = {
 426    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 427    { NULL, 0, 0 }
 428 };
 429
 430 static const struct dri2_extension_match optional_core_extensions[] = {
 431    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 432    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 433    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 434    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 435    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 436    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 437    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 438    { NULL, 0, 0 }
 439 };
 440
 441 static EGLBoolean
 442 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 443                      const struct dri2_extension_match *matches,
 444                      const __DRIextension **extensions,
 445                      bool optional)
 446 {
 447    int ret = EGL_TRUE;
 448    void *field;
 449
 450    for (int i = 0; extensions[i]; i++) {
 451       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 452       for (int j = 0; matches[j].name; j++) {
 453          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 454              extensions[i]->version >= matches[j].version) {
 455             field = ((char *) dri2_dpy + matches[j].offset);
 456             *(const __DRIextension **) field = extensions[i];
 457             _eglLog(_EGL_INFO, "found extension %s version %d",
 458                     extensions[i]->name, extensions[i]->version);
 459             break;
 460          }
 461       }
 462    }
 463
 464    for (int j = 0; matches[j].name; j++) {
 465       field = ((char *) dri2_dpy + matches[j].offset);
 466       if (*(const __DRIextension **) field == NULL) {
 467          if (optional) {
 468             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 469                     matches[j].name, matches[j].version);
 470          } else {
 471             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 472                     matches[j].name, matches[j].version);
 473             ret = EGL_FALSE;
 474          }
 475       }
 476    }
 477
 478    return ret;
 479 }
 480
 481 static const __DRIextension **
 482 dri2_open_driver(_EGLDisplay *disp)
 483 {
 484    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 485    const __DRIextension **extensions = NULL;
 486    char path[PATH_MAX], *search_paths, *next, *end;
 487    char *get_extensions_name;
 488    const __DRIextension **(*get_extensions)(void);
 489
 490    search_paths = NULL;
 491    if (geteuid() == getuid()) {
 492       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 493       search_paths = getenv("LIBGL_DRIVERS_PATH");
 494    }
 495    if (search_paths == NULL)
 496       search_paths = DEFAULT_DRIVER_DIR;
 497
 498    dri2_dpy->driver = NULL;
 499    end = search_paths + strlen(search_paths);
 500    for (char *p = search_paths; p < end; p = next + 1) {
 501       int len;
 502       next = strchr(p, ':');
 503       if (next == NULL)
 504          next = end;
 505
 506       len = next - p;
 507 #if GLX_USE_TLS
 508       snprintf(path, sizeof path,
 509                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 510       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 511 #endif
 512       if (dri2_dpy->driver == NULL) {
 513          snprintf(path, sizeof path,
 514                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 515          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 516          if (dri2_dpy->driver == NULL)
 517             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 518       }
 519       /* not need continue to loop all paths once the driver is found */
 520       if (dri2_dpy->driver != NULL)
 521          break;
 522    }
 523
 524    if (dri2_dpy->driver == NULL) {
 525       _eglLog(_EGL_WARNING,
 526               "DRI2: failed to open %s (search paths %s)",
 527               dri2_dpy->driver_name, search_paths);
 528       return NULL;
 529    }
 530
 531    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 532
 533    get_extensions_name = loader_get_extensions_name(dri2_dpy->driver_name);
 534    if (get_extensions_name) {
 535       get_extensions = dlsym(dri2_dpy->driver, get_extensions_name);
 536       if (get_extensions) {
 537          extensions = get_extensions();
 538       } else {
 539          _eglLog(_EGL_DEBUG, "driver does not expose %s(): %s\n",
 540                  get_extensions_name, dlerror());
 541       }
 542       free(get_extensions_name);
 543    }
 544
 545    if (!extensions)
 546       extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 547    if (extensions == NULL) {
 548       _eglLog(_EGL_WARNING,
 549               "DRI2: driver exports no extensions (%s)", dlerror());
 550       dlclose(dri2_dpy->driver);
 551    }
 552
 553    return extensions;
 554 }
 555
 556 EGLBoolean
 557 dri2_load_driver_dri3(_EGLDisplay *disp)
 558 {
 559    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 560    const __DRIextension **extensions;
 561
 562    extensions = dri2_open_driver(disp);
 563    if (!extensions)
 564       return EGL_FALSE;
 565
 566    if (!dri2_bind_extensions(dri2_dpy, dri3_driver_extensions, extensions, false)) {
 567       dlclose(dri2_dpy->driver);
 568       return EGL_FALSE;
 569    }
 570    dri2_dpy->driver_extensions = extensions;
 571
 572    return EGL_TRUE;
 573 }
 574
 575 EGLBoolean
 576 dri2_load_driver(_EGLDisplay *disp)
 577 {
 578    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 579    const __DRIextension **extensions;
 580
 581    extensions = dri2_open_driver(disp);
 582    if (!extensions)
 583       return EGL_FALSE;
 584
 585    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions, false)) {
 586       dlclose(dri2_dpy->driver);
 587       return EGL_FALSE;
 588    }
 589    dri2_dpy->driver_extensions = extensions;
 590
 591    return EGL_TRUE;
 592 }
 593
 594 EGLBoolean
 595 dri2_load_driver_swrast(_EGLDisplay *disp)
 596 {
 597    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 598    const __DRIextension **extensions;
 599
 600    extensions = dri2_open_driver(disp);
 601    if (!extensions)
 602       return EGL_FALSE;
 603
 604    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions, false)) {
 605       dlclose(dri2_dpy->driver);
 606       return EGL_FALSE;
 607    }
 608    dri2_dpy->driver_extensions = extensions;
 609
 610    return EGL_TRUE;
 611 }
 612
 613 static unsigned
 614 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 615 {
 616    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 617    unsigned int value = 0;
 618
 619    if (!rendererQuery ||
 620        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 621       return 0;
 622
 623    return value;
 624 }
 625
 626 void
 627 dri2_setup_screen(_EGLDisplay *disp)
 628 {
 629    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 630    unsigned int api_mask;
 631
 632    /*
 633     * EGL 1.5 specification defines the default value to 1. Moreover,
 634     * eglSwapInterval() is required to clamp requested value to the supported
 635     * range. Since the default value is implicitly assumed to be supported,
 636     * use it as both minimum and maximum for the platforms that do not allow
 637     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 638     * override these values already.
 639     */
 640    dri2_dpy->min_swap_interval = 1;
 641    dri2_dpy->max_swap_interval = 1;
 642    dri2_dpy->default_swap_interval = 1;
 643
 644    if (dri2_dpy->image_driver) {
 645       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 646    } else if (dri2_dpy->dri2) {
 647       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 648    } else {
 649       assert(dri2_dpy->swrast);
 650       api_mask = 1 << __DRI_API_OPENGL |
 651                  1 << __DRI_API_GLES |
 652                  1 << __DRI_API_GLES2 |
 653                  1 << __DRI_API_GLES3;
 654    }
 655
 656    disp->ClientAPIs = 0;
 657    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 658       disp->ClientAPIs |= EGL_OPENGL_BIT;
 659    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 660       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 661    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 662       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 663    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 664       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 665
 666    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 667    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 668    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 669
 670    if (dri2_renderer_query_integer(dri2_dpy,
 671                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 672       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 673
 674    if (dri2_dpy->image_driver ||
 675        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 676        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 677       disp->Extensions.KHR_create_context = EGL_TRUE;
 678
 679       if (dri2_dpy->robustness)
 680          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 681    }
 682
 683    if (dri2_dpy->no_error)
 684       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 685
 686    if (dri2_dpy->fence) {
 687       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 688       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 689       if (dri2_dpy->fence->get_fence_from_cl_event)
 690          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 691       if (dri2_dpy->fence->base.version >= 2 &&
 692           dri2_dpy->fence->get_capabilities) {
 693          unsigned capabilities =
 694             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 695          disp->Extensions.ANDROID_native_fence_sync =
 696             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 697       }
 698    }
 699
 700    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 701
 702    if (dri2_dpy->image) {
 703       if (dri2_dpy->image->base.version >= 10 &&
 704           dri2_dpy->image->getCapabilities != NULL) {
 705          int capabilities;
 706
 707          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 708          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 709
 710          if (dri2_dpy->image->base.version >= 11)
 711             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 712       } else {
 713          disp->Extensions.MESA_drm_image = EGL_TRUE;
 714          if (dri2_dpy->image->base.version >= 11)
 715             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 716       }
 717
 718       disp->Extensions.KHR_image_base = EGL_TRUE;
 719       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 720       if (dri2_dpy->image->base.version >= 5 &&
 721           dri2_dpy->image->createImageFromTexture) {
 722          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 723          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 724
 725          if (dri2_renderer_query_integer(dri2_dpy,
 726                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 727              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 728       }
 729 #ifdef HAVE_LIBDRM
 730       if (dri2_dpy->image->base.version >= 8 &&
 731           dri2_dpy->image->createImageFromDmaBufs) {
 732          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 733       }
 734       if (dri2_dpy->image->base.version >= 15 &&
 735           dri2_dpy->image->createImageFromDmaBufs2 &&
 736           dri2_dpy->image->queryDmaBufFormats &&
 737           dri2_dpy->image->queryDmaBufModifiers) {
 738          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 739       }
 740 #endif
 741    }
 742 }
 743
 744 void
 745 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 746 {
 747    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 748    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 749
 750    /* Allow driconf to override applications.*/
 751    if (dri2_dpy->config)
 752       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 753                                      "vblank_mode", &vblank_mode);
 754    switch (vblank_mode) {
 755    case DRI_CONF_VBLANK_NEVER:
 756       dri2_dpy->min_swap_interval = 0;
 757       dri2_dpy->max_swap_interval = 0;
 758       dri2_dpy->default_swap_interval = 0;
 759       break;
 760    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 761       dri2_dpy->min_swap_interval = 1;
 762       dri2_dpy->max_swap_interval = max_swap_interval;
 763       dri2_dpy->default_swap_interval = 1;
 764       break;
 765    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 766       dri2_dpy->min_swap_interval = 0;
 767       dri2_dpy->max_swap_interval = max_swap_interval;
 768       dri2_dpy->default_swap_interval = 0;
 769       break;
 770    default:
 771    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 772       dri2_dpy->min_swap_interval = 0;
 773       dri2_dpy->max_swap_interval = max_swap_interval;
 774       dri2_dpy->default_swap_interval = 1;
 775       break;
 776    }
 777 }
 778
 779 /* All platforms but DRM call this function to create the screen and populate
 780  * the driver_configs. DRM inherits that information from its display - GBM.
 781  */
 782 EGLBoolean
 783 dri2_create_screen(_EGLDisplay *disp)
 784 {
 785    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 786
 787    if (dri2_dpy->image_driver) {
 788       dri2_dpy->dri_screen =
 789          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 790                                                   dri2_dpy->loader_extensions,
 791                                                   dri2_dpy->driver_extensions,
 792                                                   &dri2_dpy->driver_configs,
 793                                                   disp);
 794    } else if (dri2_dpy->dri2) {
 795       if (dri2_dpy->dri2->base.version >= 4) {
 796          dri2_dpy->dri_screen =
 797             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 798                                              dri2_dpy->loader_extensions,
 799                                              dri2_dpy->driver_extensions,
 800                                              &dri2_dpy->driver_configs, disp);
 801       } else {
 802          dri2_dpy->dri_screen =
 803             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 804                                             dri2_dpy->loader_extensions,
 805                                             &dri2_dpy->driver_configs, disp);
 806       }
 807    } else {
 808       assert(dri2_dpy->swrast);
 809       if (dri2_dpy->swrast->base.version >= 4) {
 810          dri2_dpy->dri_screen =
 811             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 812                                                dri2_dpy->driver_extensions,
 813                                                &dri2_dpy->driver_configs, disp);
 814       } else {
 815          dri2_dpy->dri_screen =
 816             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 817                                               &dri2_dpy->driver_configs, disp);
 818       }
 819    }
 820
 821    if (dri2_dpy->dri_screen == NULL) {
 822       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 823       return EGL_FALSE;
 824    }
 825
 826    dri2_dpy->own_dri_screen = true;
 827    return EGL_TRUE;
 828 }
 829
 830 EGLBoolean
 831 dri2_setup_extensions(_EGLDisplay *disp)
 832 {
 833    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 834    const struct dri2_extension_match *mandatory_core_extensions;
 835    const __DRIextension **extensions;
 836
 837    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 838
 839    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 840       mandatory_core_extensions = dri2_core_extensions;
 841    else
 842       mandatory_core_extensions = swrast_core_extensions;
 843
 844    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 845       return EGL_FALSE;
 846
 847    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 848    return EGL_TRUE;
 849 }
 850
 851 /**
 852  * Called via eglInitialize(), GLX_drv->API.Initialize().
 853  *
 854  * This must be guaranteed to be called exactly once, even if eglInitialize is
 855  * called many times (without a eglTerminate in between).
 856  */
 857 static EGLBoolean
 858 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 859 {
 860    EGLBoolean ret = EGL_FALSE;
 861    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 862
 863    /* In the case where the application calls eglMakeCurrent(context1),
 864     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 865     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 866     * initialized, as we need it to be able to free context1 correctly.
 867     *
 868     * It would probably be safest to forcibly release the display with
 869     * dri2_display_release, to make sure the display is reinitialized correctly.
 870     * However, the EGL spec states that we need to keep a reference to the
 871     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 872     * we would leak context1 as we would be missing the old display connection
 873     * to free it up correctly.
 874     */
 875    if (dri2_dpy) {
 876       dri2_dpy->ref_count++;
 877       return EGL_TRUE;
 878    }
 879
 880    /* not until swrast_dri is supported */
 881    if (disp->Options.UseFallback)
 882       return EGL_FALSE;
 883
 884    /* Nothing to initialize for a test only display */
 885    if (disp->Options.TestOnly)
 886       return EGL_TRUE;
 887
 888    switch (disp->Platform) {
 889 #ifdef HAVE_SURFACELESS_PLATFORM
 890    case _EGL_PLATFORM_SURFACELESS:
 891       ret = dri2_initialize_surfaceless(drv, disp);
 892       break;
 893 #endif
 894 #ifdef HAVE_X11_PLATFORM
 895    case _EGL_PLATFORM_X11:
 896       ret = dri2_initialize_x11(drv, disp);
 897       break;
 898 #endif
 899 #ifdef HAVE_DRM_PLATFORM
 900    case _EGL_PLATFORM_DRM:
 901       ret = dri2_initialize_drm(drv, disp);
 902       break;
 903 #endif
 904 #ifdef HAVE_WAYLAND_PLATFORM
 905    case _EGL_PLATFORM_WAYLAND:
 906       ret = dri2_initialize_wayland(drv, disp);
 907       break;
 908 #endif
 909 #ifdef HAVE_ANDROID_PLATFORM
 910    case _EGL_PLATFORM_ANDROID:
 911       ret = dri2_initialize_android(drv, disp);
 912       break;
 913 #endif
 914    default:
 915       _eglLog(_EGL_WARNING, "No EGL platform enabled.");
 916       return EGL_FALSE;
 917    }
 918
 919    if (!ret)
 920       return EGL_FALSE;
 921
 922    dri2_dpy = dri2_egl_display(disp);
 923    dri2_dpy->ref_count++;
 924
 925    return EGL_TRUE;
 926 }
 927
 928 /**
 929  * Decrement display reference count, and free up display if necessary.
 930  */
 931 static void
 932 dri2_display_release(_EGLDisplay *disp)
 933 {
 934    struct dri2_egl_display *dri2_dpy;
 935
 936    if (!disp)
 937       return;
 938
 939    dri2_dpy = dri2_egl_display(disp);
 940
 941    assert(dri2_dpy->ref_count > 0);
 942    dri2_dpy->ref_count--;
 943
 944    if (dri2_dpy->ref_count > 0)
 945       return;
 946
 947    _eglCleanupDisplay(disp);
 948    dri2_display_destroy(disp);
 949 }
 950
 951 void
 952 dri2_display_destroy(_EGLDisplay *disp)
 953 {
 954    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 955
 956    if (dri2_dpy->own_dri_screen) {
 957       if (dri2_dpy->vtbl->close_screen_notify)
 958          dri2_dpy->vtbl->close_screen_notify(disp);
 959       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 960    }
 961    if (dri2_dpy->fd >= 0)
 962       close(dri2_dpy->fd);
 963    if (dri2_dpy->driver)
 964       dlclose(dri2_dpy->driver);
 965    free(dri2_dpy->driver_name);
 966
 967 #ifdef HAVE_WAYLAND_PLATFORM
 968    free(dri2_dpy->device_name);
 969 #endif
 970
 971    switch (disp->Platform) {
 972 #ifdef HAVE_X11_PLATFORM
 973    case _EGL_PLATFORM_X11:
 974       if (dri2_dpy->own_device) {
 975          xcb_disconnect(dri2_dpy->conn);
 976       }
 977       break;
 978 #endif
 979 #ifdef HAVE_DRM_PLATFORM
 980    case _EGL_PLATFORM_DRM:
 981       if (dri2_dpy->own_device) {
 982          gbm_device_destroy(&dri2_dpy->gbm_dri->base);
 983       }
 984       break;
 985 #endif
 986 #ifdef HAVE_WAYLAND_PLATFORM
 987    case _EGL_PLATFORM_WAYLAND:
 988       if (dri2_dpy->wl_drm)
 989           wl_drm_destroy(dri2_dpy->wl_drm);
 990       if (dri2_dpy->wl_dmabuf)
 991           zwp_linux_dmabuf_v1_destroy(dri2_dpy->wl_dmabuf);
 992       if (dri2_dpy->wl_shm)
 993           wl_shm_destroy(dri2_dpy->wl_shm);
 994       if (dri2_dpy->wl_registry)
 995          wl_registry_destroy(dri2_dpy->wl_registry);
 996       if (dri2_dpy->wl_queue)
 997          wl_event_queue_destroy(dri2_dpy->wl_queue);
 998       if (dri2_dpy->wl_dpy_wrapper)
 999          wl_proxy_wrapper_destroy(dri2_dpy->wl_dpy_wrapper);
1000       u_vector_finish(&dri2_dpy->wl_modifiers.argb8888);
1001       u_vector_finish(&dri2_dpy->wl_modifiers.xrgb8888);
1002       u_vector_finish(&dri2_dpy->wl_modifiers.rgb565);
1003       if (dri2_dpy->own_device) {
1004          wl_display_disconnect(dri2_dpy->wl_dpy);
1005       }
1006       break;
1007 #endif
1008    default:
1009       break;
1010    }
1011
1012    /* The drm platform does not create the screen/driver_configs but reuses
1013     * the ones from the gbm device. As such the gbm itself is responsible
1014     * for the cleanup.
1015     */
1016    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1017       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1018          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1019       free(dri2_dpy->driver_configs);
1020    }
1021    free(dri2_dpy);
1022    disp->DriverData = NULL;
1023 }
1024
1025 __DRIbuffer *
1026 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1027                                     unsigned int att, unsigned int format)
1028 {
1029    struct dri2_egl_display *dri2_dpy =
1030       dri2_egl_display(dri2_surf->base.Resource.Display);
1031
1032    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1033       return NULL;
1034
1035    if (!dri2_surf->local_buffers[att]) {
1036       dri2_surf->local_buffers[att] =
1037          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1038                                         dri2_surf->base.Width, dri2_surf->base.Height);
1039    }
1040
1041    return dri2_surf->local_buffers[att];
1042 }
1043
1044 void
1045 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1046 {
1047    struct dri2_egl_display *dri2_dpy =
1048       dri2_egl_display(dri2_surf->base.Resource.Display);
1049
1050    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1051       if (dri2_surf->local_buffers[i]) {
1052          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1053                                        dri2_surf->local_buffers[i]);
1054          dri2_surf->local_buffers[i] = NULL;
1055       }
1056    }
1057 }
1058
1059 /**
1060  * Called via eglTerminate(), drv->API.Terminate().
1061  *
1062  * This must be guaranteed to be called exactly once, even if eglTerminate is
1063  * called many times (without a eglInitialize in between).
1064  */
1065 static EGLBoolean
1066 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1067 {
1068    /* Release all non-current Context/Surfaces. */
1069    _eglReleaseDisplayResources(drv, disp);
1070
1071    dri2_display_release(disp);
1072
1073    return EGL_TRUE;
1074 }
1075
1076 /**
1077  * Set the error code after a call to
1078  * dri2_egl_display::dri2::createContextAttribs.
1079  */
1080 static void
1081 dri2_create_context_attribs_error(int dri_error)
1082 {
1083    EGLint egl_error;
1084
1085    switch (dri_error) {
1086    case __DRI_CTX_ERROR_SUCCESS:
1087       return;
1088
1089    case __DRI_CTX_ERROR_NO_MEMORY:
1090       egl_error = EGL_BAD_ALLOC;
1091       break;
1092
1093   /* From the EGL_KHR_create_context spec, section "Errors":
1094    *
1095    *   * If <config> does not support a client API context compatible
1096    *     with the requested API major and minor version, [...] context flags,
1097    *     and context reset notification behavior (for client API types where
1098    *     these attributes are supported), then an EGL_BAD_MATCH error is
1099    *     generated.
1100    *
1101    *   * If an OpenGL ES context is requested and the values for
1102    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1103    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1104    *     is not defined, than an EGL_BAD_MATCH error is generated.
1105    *
1106    *   * If an OpenGL context is requested, the requested version is
1107    *     greater than 3.2, and the value for attribute
1108    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1109    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1110    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1111    *     one of these bits set; or if the implementation does not support
1112    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1113    */
1114    case __DRI_CTX_ERROR_BAD_API:
1115    case __DRI_CTX_ERROR_BAD_VERSION:
1116    case __DRI_CTX_ERROR_BAD_FLAG:
1117       egl_error = EGL_BAD_MATCH;
1118       break;
1119
1120   /* From the EGL_KHR_create_context spec, section "Errors":
1121    *
1122    *   * If an attribute name or attribute value in <attrib_list> is not
1123    *     recognized (including unrecognized bits in bitmask attributes),
1124    *     then an EGL_BAD_ATTRIBUTE error is generated."
1125    */
1126    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1127    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1128       egl_error = EGL_BAD_ATTRIBUTE;
1129       break;
1130
1131    default:
1132       assert(0);
1133       egl_error = EGL_BAD_MATCH;
1134       break;
1135    }
1136
1137    _eglError(egl_error, "dri2_create_context");
1138 }
1139
1140 static bool
1141 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1142                           struct dri2_egl_display *dri2_dpy,
1143                           uint32_t *ctx_attribs,
1144                           unsigned *num_attribs)
1145 {
1146    int pos = 0;
1147
1148    assert(*num_attribs >= 8);
1149
1150    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1151    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1152    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1153    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1154
1155    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1156       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1157        * extension, don't even try to send it the robust-access flag.
1158        * It may explode.  Instead, generate the required EGL error here.
1159        */
1160       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1161             && !dri2_dpy->robustness) {
1162          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1163          return false;
1164       }
1165
1166       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1167       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1168          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1169    }
1170
1171    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1172       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1173        * extension, don't even try to send it a reset strategy.  It may
1174        * explode.  Instead, generate the required EGL error here.
1175        */
1176       if (!dri2_dpy->robustness) {
1177          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1178          return false;
1179       }
1180
1181       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1182       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1183    }
1184
1185    *num_attribs = pos;
1186
1187    return true;
1188 }
1189
1190 /**
1191  * Called via eglCreateContext(), drv->API.CreateContext().
1192  */
1193 static _EGLContext *
1194 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1195                     _EGLContext *share_list, const EGLint *attrib_list)
1196 {
1197    struct dri2_egl_context *dri2_ctx;
1198    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1199    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1200    __DRIcontext *shared =
1201       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1202    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1203    const __DRIconfig *dri_config;
1204    int api;
1205
1206    (void) drv;
1207
1208    dri2_ctx = malloc(sizeof *dri2_ctx);
1209    if (!dri2_ctx) {
1210       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1211       return NULL;
1212    }
1213
1214    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1215       goto cleanup;
1216
1217    /* The EGL_EXT_create_context_robustness spec says:
1218     *
1219     *    "Add to the eglCreateContext context creation errors: [...]
1220     *
1221     *     * If the reset notification behavior of <share_context> and the
1222     *       newly created context are different then an EGL_BAD_MATCH error is
1223     *       generated."
1224     */
1225    if (share_list && share_list->ResetNotificationStrategy !=
1226                      dri2_ctx->base.ResetNotificationStrategy) {
1227       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1228       goto cleanup;
1229    }
1230
1231    /* The EGL_KHR_create_context_no_error spec says:
1232     *
1233     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1234     *    used to create <share_context> does not match the value of
1235     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1236     */
1237    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1238       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1239       goto cleanup;
1240    }
1241
1242    switch (dri2_ctx->base.ClientAPI) {
1243    case EGL_OPENGL_ES_API:
1244       switch (dri2_ctx->base.ClientMajorVersion) {
1245       case 1:
1246          api = __DRI_API_GLES;
1247          break;
1248       case 2:
1249          api = __DRI_API_GLES2;
1250          break;
1251       case 3:
1252          api = __DRI_API_GLES3;
1253          break;
1254       default:
1255          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1256          free(dri2_ctx);
1257          return NULL;
1258       }
1259       break;
1260    case EGL_OPENGL_API:
1261       if ((dri2_ctx->base.ClientMajorVersion >= 4
1262            || (dri2_ctx->base.ClientMajorVersion == 3
1263                && dri2_ctx->base.ClientMinorVersion >= 2))
1264           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1265          api = __DRI_API_OPENGL_CORE;
1266       else
1267          api = __DRI_API_OPENGL;
1268       break;
1269    default:
1270       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1271       free(dri2_ctx);
1272       return NULL;
1273    }
1274
1275    if (conf != NULL) {
1276       /* The config chosen here isn't necessarily
1277        * used for surfaces later.
1278        * A pixmap surface will use the single config.
1279        * This opportunity depends on disabling the
1280        * doubleBufferMode check in
1281        * src/mesa/main/context.c:check_compatible()
1282        */
1283       if (dri2_config->dri_config[1][0])
1284          dri_config = dri2_config->dri_config[1][0];
1285       else
1286          dri_config = dri2_config->dri_config[0][0];
1287
1288       /* EGL_WINDOW_BIT is set only when there is a double-buffered dri_config.
1289        * This makes sure the back buffer will always be used.
1290        */
1291       if (conf->SurfaceType & EGL_WINDOW_BIT)
1292          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
1293    }
1294    else
1295       dri_config = NULL;
1296
1297    if (dri2_dpy->image_driver) {
1298       unsigned error;
1299       unsigned num_attribs = 8;
1300       uint32_t ctx_attribs[8];
1301
1302       if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1303                                         &num_attribs))
1304          goto cleanup;
1305
1306       dri2_ctx->dri_context =
1307          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1308                                                       api,
1309                                                       dri_config,
1310                                                       shared,
1311                                                       num_attribs / 2,
1312                                                       ctx_attribs,
1313                                                       & error,
1314                                                       dri2_ctx);
1315       dri2_create_context_attribs_error(error);
1316    } else if (dri2_dpy->dri2) {
1317       if (dri2_dpy->dri2->base.version >= 3) {
1318          unsigned error;
1319          unsigned num_attribs = 8;
1320          uint32_t ctx_attribs[8];
1321
1322          if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1323                                         &num_attribs))
1324             goto cleanup;
1325
1326          dri2_ctx->dri_context =
1327             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1328                                                  api,
1329                                                  dri_config,
1330                                                  shared,
1331                                                  num_attribs / 2,
1332                                                  ctx_attribs,
1333                                                  & error,
1334                                                  dri2_ctx);
1335          dri2_create_context_attribs_error(error);
1336       } else {
1337          dri2_ctx->dri_context =
1338             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1339                                                    api,
1340                                                    dri_config,
1341                                                    shared,
1342                                                    dri2_ctx);
1343       }
1344    } else {
1345       assert(dri2_dpy->swrast);
1346       if (dri2_dpy->swrast->base.version >= 3) {
1347          unsigned error;
1348          unsigned num_attribs = 8;
1349          uint32_t ctx_attribs[8];
1350
1351          if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1352                                         &num_attribs))
1353             goto cleanup;
1354
1355          dri2_ctx->dri_context =
1356             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1357                                                    api,
1358                                                    dri_config,
1359                                                    shared,
1360                                                    num_attribs / 2,
1361                                                    ctx_attribs,
1362                                                    & error,
1363                                                    dri2_ctx);
1364          dri2_create_context_attribs_error(error);
1365       } else {
1366          dri2_ctx->dri_context =
1367             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1368                                                      api,
1369                                                      dri_config,
1370                                                      shared,
1371                                                      dri2_ctx);
1372       }
1373    }
1374
1375    if (!dri2_ctx->dri_context)
1376       goto cleanup;
1377
1378    return &dri2_ctx->base;
1379
1380  cleanup:
1381    free(dri2_ctx);
1382    return NULL;
1383 }
1384
1385 /**
1386  * Called via eglDestroyContext(), drv->API.DestroyContext().
1387  */
1388 static EGLBoolean
1389 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1390 {
1391    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1392    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1393
1394    if (_eglPutContext(ctx)) {
1395       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1396       free(dri2_ctx);
1397    }
1398
1399    return EGL_TRUE;
1400 }
1401
1402 EGLBoolean
1403 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
1404         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1405 {
1406    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1407    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1408
1409    dri2_surf->out_fence_fd = -1;
1410    dri2_surf->enable_out_fence = false;
1411    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1412        dri2_dpy->fence->get_capabilities &&
1413        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1414         __DRI_FENCE_CAP_NATIVE_FD)) {
1415       dri2_surf->enable_out_fence = enable_out_fence;
1416    }
1417
1418    return _eglInitSurface(surf, dpy, type, conf, attrib_list);
1419 }
1420
1421 static void
1422 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1423 {
1424    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1425
1426    if (dri2_surf->out_fence_fd >= 0)
1427       close(dri2_surf->out_fence_fd);
1428
1429    dri2_surf->out_fence_fd = fence_fd;
1430 }
1431
1432 void
1433 dri2_fini_surface(_EGLSurface *surf)
1434 {
1435    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1436
1437    dri2_surface_set_out_fence_fd(surf, -1);
1438    dri2_surf->enable_out_fence = false;
1439 }
1440
1441 static EGLBoolean
1442 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1443 {
1444    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1445
1446    if (!_eglPutSurface(surf))
1447       return EGL_TRUE;
1448
1449    return dri2_dpy->vtbl->destroy_surface(drv, dpy, surf);
1450 }
1451
1452 static void
1453 dri2_surf_update_fence_fd(_EGLContext *ctx,
1454                           _EGLDisplay *dpy, _EGLSurface *surf)
1455 {
1456    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1457    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1458    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1459    int fence_fd = -1;
1460    void *fence;
1461
1462    if (!dri2_surf->enable_out_fence)
1463       return;
1464
1465    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1466    if (fence) {
1467       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1468                                                fence);
1469       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1470    }
1471    dri2_surface_set_out_fence_fd(surf, fence_fd);
1472 }
1473
1474 /**
1475  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1476  */
1477 static EGLBoolean
1478 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1479                   _EGLSurface *rsurf, _EGLContext *ctx)
1480 {
1481    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1482    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1483    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1484    _EGLContext *old_ctx;
1485    _EGLSurface *old_dsurf, *old_rsurf;
1486    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1487    __DRIdrawable *ddraw, *rdraw;
1488    __DRIcontext *cctx;
1489    EGLBoolean unbind;
1490
1491    if (!dri2_dpy)
1492       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1493
1494    /* make new bindings */
1495    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1496       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1497       return EGL_FALSE;
1498    }
1499
1500    /* flush before context switch */
1501    if (old_ctx)
1502       dri2_drv->glFlush();
1503
1504    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1505    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1506    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1507
1508    if (old_ctx) {
1509       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1510
1511       if (old_dsurf)
1512          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1513       dri2_dpy->core->unbindContext(old_cctx);
1514    }
1515
1516    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1517
1518    if (unbind || dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1519       dri2_destroy_surface(drv, disp, old_dsurf);
1520       dri2_destroy_surface(drv, disp, old_rsurf);
1521
1522       if (!unbind)
1523          dri2_dpy->ref_count++;
1524       if (old_ctx) {
1525          EGLDisplay old_disp = _eglGetDisplayHandle(old_ctx->Resource.Display);
1526          dri2_destroy_context(drv, disp, old_ctx);
1527          dri2_display_release(old_disp);
1528       }
1529
1530       return EGL_TRUE;
1531    } else {
1532       /* undo the previous _eglBindContext */
1533       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1534       assert(&dri2_ctx->base == ctx &&
1535              tmp_dsurf == dsurf &&
1536              tmp_rsurf == rsurf);
1537
1538       _eglPutSurface(dsurf);
1539       _eglPutSurface(rsurf);
1540       _eglPutContext(ctx);
1541
1542       _eglPutSurface(old_dsurf);
1543       _eglPutSurface(old_rsurf);
1544       _eglPutContext(old_ctx);
1545
1546       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1547        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1548        * as EGL_SUCCESS.
1549        */
1550       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1551    }
1552 }
1553
1554 __DRIdrawable *
1555 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1556 {
1557    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1558
1559    return dri2_surf->dri_drawable;
1560 }
1561
1562 /*
1563  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1564  */
1565 static _EGLProc
1566 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1567 {
1568    return _glapi_get_proc_address(procname);
1569 }
1570
1571 static _EGLSurface*
1572 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1573                            _EGLConfig *conf, void *native_window,
1574                            const EGLint *attrib_list)
1575 {
1576    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1577    return dri2_dpy->vtbl->create_window_surface(drv, dpy, conf, native_window,
1578                                                 attrib_list);
1579 }
1580
1581 static _EGLSurface*
1582 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1583                            _EGLConfig *conf, void *native_pixmap,
1584                            const EGLint *attrib_list)
1585 {
1586    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1587    return dri2_dpy->vtbl->create_pixmap_surface(drv, dpy, conf, native_pixmap,
1588                                                 attrib_list);
1589 }
1590
1591 static _EGLSurface*
1592 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1593                            _EGLConfig *conf, const EGLint *attrib_list)
1594 {
1595    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1596    return dri2_dpy->vtbl->create_pbuffer_surface(drv, dpy, conf, attrib_list);
1597 }
1598
1599 static EGLBoolean
1600 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1601                    EGLint interval)
1602 {
1603    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1604    if (!dri2_dpy->vtbl->swap_interval)
1605       return EGL_TRUE;
1606    return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval);
1607 }
1608
1609 /**
1610  * Asks the client API to flush any rendering to the drawable so that we can
1611  * do our swapbuffers.
1612  */
1613 void
1614 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1615 {
1616    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1617    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1618
1619    if (dri2_dpy->flush) {
1620       if (dri2_dpy->flush->base.version >= 4) {
1621          /* We know there's a current context because:
1622           *
1623           *     "If surface is not bound to the calling thread’s current
1624           *      context, an EGL_BAD_SURFACE error is generated."
1625          */
1626          _EGLContext *ctx = _eglGetCurrentContext();
1627          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1628
1629          /* From the EGL 1.4 spec (page 52):
1630           *
1631           *     "The contents of ancillary buffers are always undefined
1632           *      after calling eglSwapBuffers."
1633           */
1634          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1635                                            dri_drawable,
1636                                            __DRI2_FLUSH_DRAWABLE |
1637                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1638                                            __DRI2_THROTTLE_SWAPBUFFER);
1639       } else {
1640          dri2_dpy->flush->flush(dri_drawable);
1641       }
1642    }
1643 }
1644
1645 static EGLBoolean
1646 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1647 {
1648    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1649    _EGLContext *ctx = _eglGetCurrentContext();
1650
1651    if (ctx && surf)
1652       dri2_surf_update_fence_fd(ctx, dpy, surf);
1653    return dri2_dpy->vtbl->swap_buffers(drv, dpy, surf);
1654 }
1655
1656 static EGLBoolean
1657 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *dpy,
1658                               _EGLSurface *surf,
1659                               const EGLint *rects, EGLint n_rects)
1660 {
1661    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1662    _EGLContext *ctx = _eglGetCurrentContext();
1663
1664    if (ctx && surf)
1665       dri2_surf_update_fence_fd(ctx, dpy, surf);
1666    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, dpy, surf,
1667                                                    rects, n_rects);
1668 }
1669
1670 static EGLBoolean
1671 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1672                          EGLint numRects, const EGLint *rects)
1673 {
1674    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1675    return dri2_dpy->vtbl->swap_buffers_region(drv, dpy, surf, numRects, rects);
1676 }
1677
1678 static EGLBoolean
1679 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1680                        EGLint *rects, EGLint n_rects)
1681 {
1682    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1683    return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
1684 }
1685
1686 static EGLBoolean
1687 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1688                      EGLint x, EGLint y, EGLint width, EGLint height)
1689 {
1690    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1691    return dri2_dpy->vtbl->post_sub_buffer(drv, dpy, surf, x, y, width, height);
1692 }
1693
1694 static EGLBoolean
1695 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1696                   void *native_pixmap_target)
1697 {
1698    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1699    return dri2_dpy->vtbl->copy_buffers(drv, dpy, surf, native_pixmap_target);
1700 }
1701
1702 static EGLint
1703 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1704 {
1705    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1706    return dri2_dpy->vtbl->query_buffer_age(drv, dpy, surf);
1707 }
1708
1709 static EGLBoolean
1710 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1711 {
1712    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1713    _EGLSurface *surf = ctx->DrawSurface;
1714    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1715
1716    (void) drv;
1717
1718    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1719     * we need to copy fake to real here.*/
1720
1721    if (dri2_dpy->flush != NULL)
1722       dri2_dpy->flush->flush(dri_drawable);
1723
1724    return EGL_TRUE;
1725 }
1726
1727 static EGLBoolean
1728 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1729 {
1730    (void) drv;
1731    (void) disp;
1732
1733    if (engine != EGL_CORE_NATIVE_ENGINE)
1734       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1735    /* glXWaitX(); */
1736
1737    return EGL_TRUE;
1738 }
1739
1740 static EGLBoolean
1741 dri2_bind_tex_image(_EGLDriver *drv,
1742                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1743 {
1744    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1745    struct dri2_egl_context *dri2_ctx;
1746    _EGLContext *ctx;
1747    GLint format, target;
1748    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1749
1750    ctx = _eglGetCurrentContext();
1751    dri2_ctx = dri2_egl_context(ctx);
1752
1753    if (!_eglBindTexImage(drv, disp, surf, buffer))
1754       return EGL_FALSE;
1755
1756    switch (surf->TextureFormat) {
1757    case EGL_TEXTURE_RGB:
1758       format = __DRI_TEXTURE_FORMAT_RGB;
1759       break;
1760    case EGL_TEXTURE_RGBA:
1761       format = __DRI_TEXTURE_FORMAT_RGBA;
1762       break;
1763    default:
1764       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1765       format = __DRI_TEXTURE_FORMAT_RGBA;
1766    }
1767
1768    switch (surf->TextureTarget) {
1769    case EGL_TEXTURE_2D:
1770       target = GL_TEXTURE_2D;
1771       break;
1772    default:
1773       target = GL_TEXTURE_2D;
1774       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1775    }
1776
1777    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1778                                        target, format,
1779                                        dri_drawable);
1780
1781    return EGL_TRUE;
1782 }
1783
1784 static EGLBoolean
1785 dri2_release_tex_image(_EGLDriver *drv,
1786                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1787 {
1788    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1789    struct dri2_egl_context *dri2_ctx;
1790    _EGLContext *ctx;
1791    GLint  target;
1792    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1793
1794    ctx = _eglGetCurrentContext();
1795    dri2_ctx = dri2_egl_context(ctx);
1796
1797    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1798       return EGL_FALSE;
1799
1800    switch (surf->TextureTarget) {
1801    case EGL_TEXTURE_2D:
1802       target = GL_TEXTURE_2D;
1803       break;
1804    default:
1805       assert(0);
1806    }
1807
1808    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1809        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1810       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1811                                              target, dri_drawable);
1812    }
1813
1814    return EGL_TRUE;
1815 }
1816
1817 static _EGLImage*
1818 dri2_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
1819                   EGLenum target, EGLClientBuffer buffer,
1820                   const EGLint *attr_list)
1821 {
1822    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1823    return dri2_dpy->vtbl->create_image(drv, dpy, ctx, target, buffer,
1824                                        attr_list);
1825 }
1826
1827 static _EGLImage *
1828 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1829 {
1830    struct dri2_egl_image *dri2_img;
1831
1832    if (dri_image == NULL) {
1833       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1834       return NULL;
1835    }
1836
1837    dri2_img = malloc(sizeof *dri2_img);
1838    if (!dri2_img) {
1839       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1840       return NULL;
1841    }
1842
1843    _eglInitImage(&dri2_img->base, disp);
1844
1845    dri2_img->dri_image = dri_image;
1846
1847    return &dri2_img->base;
1848 }
1849
1850 /**
1851  * Translate a DRI Image extension error code into an EGL error code.
1852  */
1853 static EGLint
1854 egl_error_from_dri_image_error(int dri_error)
1855 {
1856    switch (dri_error) {
1857    case __DRI_IMAGE_ERROR_SUCCESS:
1858       return EGL_SUCCESS;
1859    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1860       return EGL_BAD_ALLOC;
1861    case __DRI_IMAGE_ERROR_BAD_MATCH:
1862       return EGL_BAD_MATCH;
1863    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1864       return EGL_BAD_PARAMETER;
1865    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1866       return EGL_BAD_ACCESS;
1867    default:
1868       assert(0);
1869       return EGL_BAD_ALLOC;
1870    }
1871 }
1872
1873 static _EGLImage *
1874 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1875                                    EGLClientBuffer buffer,
1876                                    const EGLint *attr_list)
1877 {
1878    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1879    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1880    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1881    __DRIimage *dri_image;
1882
1883    if (renderbuffer == 0) {
1884       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1885       return EGL_NO_IMAGE_KHR;
1886    }
1887
1888    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1889       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1890       return EGL_NO_IMAGE_KHR;
1891    }
1892
1893    dri_image =
1894       dri2_dpy->image->createImageFromRenderbuffer(dri2_ctx->dri_context,
1895                                                    renderbuffer, NULL);
1896
1897    return dri2_create_image_from_dri(disp, dri_image);
1898 }
1899
1900 #ifdef HAVE_WAYLAND_PLATFORM
1901
1902 /* This structure describes how a wl_buffer maps to one or more
1903  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1904  * offsets and strides of the planes in the buffer.  This table maps a
1905  * wl_drm format code to a description of the planes in the buffer
1906  * that lets us create a __DRIimage for each of the planes. */
1907
1908 static const struct wl_drm_components_descriptor {
1909    uint32_t dri_components;
1910    EGLint components;
1911    int nplanes;
1912 } wl_drm_components[] = {
1913    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1914    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1915    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1916    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1917    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1918 };
1919
1920 static _EGLImage *
1921 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1922                                     EGLClientBuffer _buffer,
1923                                     const EGLint *attr_list)
1924 {
1925    struct wl_drm_buffer *buffer;
1926    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1927    const struct wl_drm_components_descriptor *f;
1928    __DRIimage *dri_image;
1929    _EGLImageAttribs attrs;
1930    int32_t plane;
1931
1932    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1933                                    (struct wl_resource *) _buffer);
1934    if (!buffer)
1935        return NULL;
1936
1937    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1938       return NULL;
1939
1940    plane = attrs.PlaneWL;
1941    f = buffer->driver_format;
1942    if (plane < 0 || plane >= f->nplanes) {
1943       _eglError(EGL_BAD_PARAMETER,
1944                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1945       return NULL;
1946    }
1947
1948    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1949
1950    if (dri_image == NULL) {
1951       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1952       return NULL;
1953    }
1954
1955    return dri2_create_image_from_dri(disp, dri_image);
1956 }
1957 #endif
1958
1959 static EGLBoolean
1960 dri2_get_sync_values_chromium(_EGLDisplay *dpy, _EGLSurface *surf,
1961                               EGLuint64KHR *ust, EGLuint64KHR *msc,
1962                               EGLuint64KHR *sbc)
1963 {
1964    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1965    return dri2_dpy->vtbl->get_sync_values(dpy, surf, ust, msc, sbc);
1966 }
1967
1968 /**
1969  * Set the error code after a call to
1970  * dri2_egl_image::dri_image::createImageFromTexture.
1971  */
1972 static void
1973 dri2_create_image_khr_texture_error(int dri_error)
1974 {
1975    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
1976
1977    if (egl_error != EGL_SUCCESS)
1978       _eglError(egl_error, "dri2_create_image_khr_texture");
1979 }
1980
1981 static _EGLImage *
1982 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
1983                                    EGLenum target,
1984                                    EGLClientBuffer buffer,
1985                                    const EGLint *attr_list)
1986 {
1987    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1988    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1989    struct dri2_egl_image *dri2_img;
1990    GLuint texture = (GLuint) (uintptr_t) buffer;
1991    _EGLImageAttribs attrs;
1992    GLuint depth;
1993    GLenum gl_target;
1994    unsigned error;
1995
1996    if (texture == 0) {
1997       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1998       return EGL_NO_IMAGE_KHR;
1999    }
2000
2001    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2002       return EGL_NO_IMAGE_KHR;
2003
2004    switch (target) {
2005    case EGL_GL_TEXTURE_2D_KHR:
2006       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2007          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2008          return EGL_NO_IMAGE_KHR;
2009       }
2010       depth = 0;
2011       gl_target = GL_TEXTURE_2D;
2012       break;
2013    case EGL_GL_TEXTURE_3D_KHR:
2014       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2015          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2016          return EGL_NO_IMAGE_KHR;
2017       }
2018
2019       depth = attrs.GLTextureZOffset;
2020       gl_target = GL_TEXTURE_3D;
2021       break;
2022    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2023    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2024    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2025    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2026    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2027    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2028       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2029          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2030          return EGL_NO_IMAGE_KHR;
2031       }
2032
2033       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2034       gl_target = GL_TEXTURE_CUBE_MAP;
2035       break;
2036    default:
2037       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2038       return EGL_NO_IMAGE_KHR;
2039    }
2040
2041    dri2_img = malloc(sizeof *dri2_img);
2042    if (!dri2_img) {
2043       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2044       return EGL_NO_IMAGE_KHR;
2045    }
2046
2047    _eglInitImage(&dri2_img->base, disp);
2048
2049    dri2_img->dri_image =
2050       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2051                                               gl_target,
2052                                               texture,
2053                                               depth,
2054                                               attrs.GLTextureLevel,
2055                                               &error,
2056                                               dri2_img);
2057    dri2_create_image_khr_texture_error(error);
2058
2059    if (!dri2_img->dri_image) {
2060       free(dri2_img);
2061       return EGL_NO_IMAGE_KHR;
2062    }
2063    return &dri2_img->base;
2064 }
2065
2066 static EGLBoolean
2067 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
2068                    EGLint attribute, EGLint *value)
2069 {
2070    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2071    if (!dri2_dpy->vtbl->query_surface)
2072       return _eglQuerySurface(drv, dpy, surf, attribute, value);
2073    return dri2_dpy->vtbl->query_surface(drv, dpy, surf, attribute, value);
2074 }
2075
2076 static struct wl_buffer*
2077 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *dpy,
2078                                       _EGLImage *img)
2079 {
2080    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2081    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, dpy, img);
2082 }
2083
2084 #ifdef HAVE_LIBDRM
2085 static _EGLImage *
2086 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2087                                   EGLClientBuffer buffer, const EGLint *attr_list)
2088 {
2089    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2090    EGLint format, name, pitch;
2091    _EGLImageAttribs attrs;
2092    __DRIimage *dri_image;
2093
2094    name = (EGLint) (uintptr_t) buffer;
2095
2096    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2097       return NULL;
2098
2099    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2100        attrs.DRMBufferStrideMESA <= 0) {
2101       _eglError(EGL_BAD_PARAMETER,
2102                 "bad width, height or stride");
2103       return NULL;
2104    }
2105
2106    switch (attrs.DRMBufferFormatMESA) {
2107    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2108       format = __DRI_IMAGE_FORMAT_ARGB8888;
2109       pitch = attrs.DRMBufferStrideMESA;
2110       break;
2111    default:
2112       _eglError(EGL_BAD_PARAMETER,
2113                 "dri2_create_image_khr: unsupported pixmap depth");
2114       return NULL;
2115    }
2116
2117    dri_image =
2118       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2119                                            attrs.Width,
2120                                            attrs.Height,
2121                                            format,
2122                                            name,
2123                                            pitch,
2124                                            NULL);
2125
2126    return dri2_create_image_from_dri(disp, dri_image);
2127 }
2128
2129 static EGLBoolean
2130 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2131 {
2132    /**
2133      * The spec says:
2134      *
2135      * "Required attributes and their values are as follows:
2136      *
2137      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2138      *
2139      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2140      *    by drm_fourcc.h and used as the pixel_format parameter of the
2141      *    drm_mode_fb_cmd2 ioctl."
2142      *
2143      * and
2144      *
2145      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2146      *    incomplete, EGL_BAD_PARAMETER is generated."
2147      */
2148    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2149        !attrs->DMABufFourCC.IsPresent)
2150       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2151
2152    /**
2153     * Also:
2154     *
2155     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2156     *  specified for a plane's pitch or offset isn't supported by EGL,
2157     *  EGL_BAD_ACCESS is generated."
2158     */
2159    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2160       if (attrs->DMABufPlanePitches[i].IsPresent &&
2161           attrs->DMABufPlanePitches[i].Value <= 0)
2162          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2163    }
2164
2165    /**
2166     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2167     * attribute values may be given.
2168     *
2169     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2170     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2171     */
2172    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2173       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2174           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2175          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2176    }
2177
2178    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2179     * mandate it, we only accept the same modifier across all planes. */
2180    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2181       if (attrs->DMABufPlaneFds[i].IsPresent) {
2182          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2183                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2184              (attrs->DMABufPlaneModifiersLo[0].Value !=
2185                attrs->DMABufPlaneModifiersLo[i].Value) ||
2186              (attrs->DMABufPlaneModifiersHi[0].Value !=
2187                attrs->DMABufPlaneModifiersHi[i].Value))
2188             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2189       }
2190    }
2191
2192    return EGL_TRUE;
2193 }
2194
2195 /* Returns the total number of file descriptors. Zero indicates an error. */
2196 static unsigned
2197 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2198 {
2199    unsigned plane_n;
2200
2201    switch (attrs->DMABufFourCC.Value) {
2202    case DRM_FORMAT_R8:
2203    case DRM_FORMAT_RG88:
2204    case DRM_FORMAT_GR88:
2205    case DRM_FORMAT_R16:
2206    case DRM_FORMAT_GR1616:
2207    case DRM_FORMAT_RGB332:
2208    case DRM_FORMAT_BGR233:
2209    case DRM_FORMAT_XRGB4444:
2210    case DRM_FORMAT_XBGR4444:
2211    case DRM_FORMAT_RGBX4444:
2212    case DRM_FORMAT_BGRX4444:
2213    case DRM_FORMAT_ARGB4444:
2214    case DRM_FORMAT_ABGR4444:
2215    case DRM_FORMAT_RGBA4444:
2216    case DRM_FORMAT_BGRA4444:
2217    case DRM_FORMAT_XRGB1555:
2218    case DRM_FORMAT_XBGR1555:
2219    case DRM_FORMAT_RGBX5551:
2220    case DRM_FORMAT_BGRX5551:
2221    case DRM_FORMAT_ARGB1555:
2222    case DRM_FORMAT_ABGR1555:
2223    case DRM_FORMAT_RGBA5551:
2224    case DRM_FORMAT_BGRA5551:
2225    case DRM_FORMAT_RGB565:
2226    case DRM_FORMAT_BGR565:
2227    case DRM_FORMAT_RGB888:
2228    case DRM_FORMAT_BGR888:
2229    case DRM_FORMAT_XRGB8888:
2230    case DRM_FORMAT_XBGR8888:
2231    case DRM_FORMAT_RGBX8888:
2232    case DRM_FORMAT_BGRX8888:
2233    case DRM_FORMAT_ARGB8888:
2234    case DRM_FORMAT_ABGR8888:
2235    case DRM_FORMAT_RGBA8888:
2236    case DRM_FORMAT_BGRA8888:
2237    case DRM_FORMAT_XRGB2101010:
2238    case DRM_FORMAT_XBGR2101010:
2239    case DRM_FORMAT_RGBX1010102:
2240    case DRM_FORMAT_BGRX1010102:
2241    case DRM_FORMAT_ARGB2101010:
2242    case DRM_FORMAT_ABGR2101010:
2243    case DRM_FORMAT_RGBA1010102:
2244    case DRM_FORMAT_BGRA1010102:
2245    case DRM_FORMAT_YUYV:
2246    case DRM_FORMAT_YVYU:
2247    case DRM_FORMAT_UYVY:
2248    case DRM_FORMAT_VYUY:
2249       plane_n = 1;
2250       break;
2251    case DRM_FORMAT_NV12:
2252    case DRM_FORMAT_NV21:
2253    case DRM_FORMAT_NV16:
2254    case DRM_FORMAT_NV61:
2255       plane_n = 2;
2256       break;
2257    case DRM_FORMAT_YUV410:
2258    case DRM_FORMAT_YVU410:
2259    case DRM_FORMAT_YUV411:
2260    case DRM_FORMAT_YVU411:
2261    case DRM_FORMAT_YUV420:
2262    case DRM_FORMAT_YVU420:
2263    case DRM_FORMAT_YUV422:
2264    case DRM_FORMAT_YVU422:
2265    case DRM_FORMAT_YUV444:
2266    case DRM_FORMAT_YVU444:
2267       plane_n = 3;
2268       break;
2269    default:
2270       _eglError(EGL_BAD_ATTRIBUTE, "invalid format");
2271       return 0;
2272    }
2273
2274    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2275       /**
2276        * The modifiers extension spec says:
2277        *
2278        * "Modifiers may modify any attribute of a buffer import, including
2279        *  but not limited to adding extra planes to a format which
2280        *  otherwise does not have those planes. As an example, a modifier
2281        *  may add a plane for an external compression buffer to a
2282        *  single-plane format. The exact meaning and effect of any
2283        *  modifier is canonically defined by drm_fourcc.h, not as part of
2284        *  this extension."
2285        */
2286       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2287           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2288          plane_n = i + 1;
2289       }
2290    }
2291
2292    /**
2293      * The spec says:
2294      *
2295      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2296      *    incomplete, EGL_BAD_PARAMETER is generated."
2297      */
2298    for (unsigned i = 0; i < plane_n; ++i) {
2299       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2300           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2301           !attrs->DMABufPlanePitches[i].IsPresent) {
2302          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2303          return 0;
2304       }
2305    }
2306
2307    /**
2308     * The spec also says:
2309     *
2310     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2311     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2312     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2313     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2314     */
2315    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2316       if (attrs->DMABufPlaneFds[i].IsPresent ||
2317           attrs->DMABufPlaneOffsets[i].IsPresent ||
2318           attrs->DMABufPlanePitches[i].IsPresent) {
2319          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2320          return 0;
2321       }
2322    }
2323
2324    return plane_n;
2325 }
2326
2327 static EGLBoolean
2328 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2329                             EGLint max, EGLint *formats, EGLint *count)
2330 {
2331    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2332    if (max < 0 || (max > 0 && formats == NULL))
2333       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2334
2335    if (dri2_dpy->image->base.version < 15 ||
2336        dri2_dpy->image->queryDmaBufFormats == NULL)
2337       return EGL_FALSE;
2338
2339    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2340                                             formats, count))
2341       return EGL_FALSE;
2342
2343    return EGL_TRUE;
2344 }
2345
2346 static EGLBoolean
2347 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2348                              EGLint max, EGLuint64KHR *modifiers,
2349                              EGLBoolean *external_only, EGLint *count)
2350 {
2351    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2352
2353    if (max < 0)
2354       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2355
2356    if (max > 0 && modifiers == NULL)
2357       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2358
2359    if (dri2_dpy->image->base.version < 15 ||
2360        dri2_dpy->image->queryDmaBufModifiers == NULL)
2361       return EGL_FALSE;
2362
2363    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2364                                              max, modifiers,
2365                                              (unsigned int *) external_only,
2366                                              count) == false)
2367       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2368
2369    return EGL_TRUE;
2370 }
2371
2372 /**
2373  * The spec says:
2374  *
2375  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2376  *  EGL will take a reference to the dma_buf(s) which it will release at any
2377  *  time while the EGLDisplay is initialized. It is the responsibility of the
2378  *  application to close the dma_buf file descriptors."
2379  *
2380  * Therefore we must never close or otherwise modify the file descriptors.
2381  */
2382 _EGLImage *
2383 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2384                           EGLClientBuffer buffer, const EGLint *attr_list)
2385 {
2386    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2387    _EGLImage *res;
2388    _EGLImageAttribs attrs;
2389    __DRIimage *dri_image;
2390    unsigned num_fds;
2391    int fds[DMA_BUF_MAX_PLANES];
2392    int pitches[DMA_BUF_MAX_PLANES];
2393    int offsets[DMA_BUF_MAX_PLANES];
2394    uint64_t modifier;
2395    bool has_modifier = false;
2396    unsigned error;
2397
2398    /**
2399     * The spec says:
2400     *
2401     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2402     *     error EGL_BAD_PARAMETER is generated."
2403     */
2404    if (buffer != NULL) {
2405       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2406       return NULL;
2407    }
2408
2409    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2410       return NULL;
2411
2412    if (!dri2_check_dma_buf_attribs(&attrs))
2413       return NULL;
2414
2415    num_fds = dri2_check_dma_buf_format(&attrs);
2416    if (!num_fds)
2417       return NULL;
2418
2419    for (unsigned i = 0; i < num_fds; ++i) {
2420       fds[i] = attrs.DMABufPlaneFds[i].Value;
2421       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2422       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2423    }
2424
2425    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2426     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2427     * attrs.DMABufPlaneModifiersHi[0] */
2428    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2429       modifier = (uint64_t) attrs.DMABufPlaneModifiersHi[0].Value << 32;
2430       modifier |= (uint64_t) (attrs.DMABufPlaneModifiersLo[0].Value & 0xffffffff);
2431       has_modifier = true;
2432    }
2433
2434    if (has_modifier) {
2435       if (dri2_dpy->image->base.version < 15 ||
2436           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2437          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2438          return EGL_NO_IMAGE_KHR;
2439       }
2440       dri_image =
2441          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2442             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2443             modifier, fds, num_fds, pitches, offsets,
2444             attrs.DMABufYuvColorSpaceHint.Value,
2445             attrs.DMABufSampleRangeHint.Value,
2446             attrs.DMABufChromaHorizontalSiting.Value,
2447             attrs.DMABufChromaVerticalSiting.Value,
2448             &error,
2449             NULL);
2450    }
2451    else {
2452       dri_image =
2453          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2454             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2455             fds, num_fds, pitches, offsets,
2456             attrs.DMABufYuvColorSpaceHint.Value,
2457             attrs.DMABufSampleRangeHint.Value,
2458             attrs.DMABufChromaHorizontalSiting.Value,
2459             attrs.DMABufChromaVerticalSiting.Value,
2460             &error,
2461             NULL);
2462    }
2463    dri2_create_image_khr_texture_error(error);
2464
2465    if (!dri_image)
2466       return EGL_NO_IMAGE_KHR;
2467
2468    res = dri2_create_image_from_dri(disp, dri_image);
2469
2470    return res;
2471 }
2472 static _EGLImage *
2473 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2474                            const EGLint *attr_list)
2475 {
2476    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2477    struct dri2_egl_image *dri2_img;
2478    _EGLImageAttribs attrs;
2479    unsigned int dri_use, valid_mask;
2480    int format;
2481
2482    (void) drv;
2483
2484    if (!attr_list) {
2485       _eglError(EGL_BAD_PARAMETER, __func__);
2486       return EGL_NO_IMAGE_KHR;
2487    }
2488
2489    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2490       return EGL_NO_IMAGE_KHR;
2491
2492    if (attrs.Width <= 0 || attrs.Height <= 0) {
2493       _eglError(EGL_BAD_PARAMETER, __func__);
2494       return EGL_NO_IMAGE_KHR;
2495    }
2496
2497    switch (attrs.DRMBufferFormatMESA) {
2498    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2499       format = __DRI_IMAGE_FORMAT_ARGB8888;
2500       break;
2501    default:
2502       _eglError(EGL_BAD_PARAMETER, __func__);
2503       return EGL_NO_IMAGE_KHR;
2504    }
2505
2506    valid_mask =
2507       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2508       EGL_DRM_BUFFER_USE_SHARE_MESA |
2509       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2510    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2511       _eglError(EGL_BAD_PARAMETER, __func__);
2512       return EGL_NO_IMAGE_KHR;
2513    }
2514
2515    dri_use = 0;
2516    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2517       dri_use |= __DRI_IMAGE_USE_SHARE;
2518    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2519       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2520    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2521       dri_use |= __DRI_IMAGE_USE_CURSOR;
2522
2523    dri2_img = malloc(sizeof *dri2_img);
2524    if (!dri2_img) {
2525       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2526       return EGL_NO_IMAGE_KHR;
2527    }
2528
2529    _eglInitImage(&dri2_img->base, disp);
2530
2531    dri2_img->dri_image =
2532       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2533                                    attrs.Width, attrs.Height,
2534                                    format, dri_use, dri2_img);
2535    if (dri2_img->dri_image == NULL) {
2536       free(dri2_img);
2537        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2538       return EGL_NO_IMAGE_KHR;
2539    }
2540
2541    return &dri2_img->base;
2542 }
2543
2544 static EGLBoolean
2545 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2546                           EGLint *name, EGLint *handle, EGLint *stride)
2547 {
2548    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2549    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2550
2551    (void) drv;
2552
2553    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2554                                             __DRI_IMAGE_ATTRIB_NAME, name))
2555       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2556
2557    if (handle)
2558       dri2_dpy->image->queryImage(dri2_img->dri_image,
2559                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2560
2561    if (stride)
2562       dri2_dpy->image->queryImage(dri2_img->dri_image,
2563                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2564
2565    return EGL_TRUE;
2566 }
2567
2568 static EGLBoolean
2569 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2570                                      _EGLImage *img,
2571                                      EGLint *fourcc, EGLint *nplanes,
2572                                      EGLuint64KHR *modifiers)
2573 {
2574    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2575    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2576
2577    (void) drv;
2578
2579
2580    if (nplanes)
2581       dri2_dpy->image->queryImage(dri2_img->dri_image,
2582                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2583    if (fourcc)
2584       dri2_dpy->image->queryImage(dri2_img->dri_image,
2585                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2586
2587    if (modifiers)
2588       *modifiers = 0;
2589
2590    return EGL_TRUE;
2591 }
2592
2593 static EGLBoolean
2594 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2595                                int *fds, EGLint *strides, EGLint *offsets)
2596 {
2597    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2598    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2599
2600    (void) drv;
2601
2602    /* rework later to provide multiple fds/strides/offsets */
2603    if (fds)
2604       dri2_dpy->image->queryImage(dri2_img->dri_image,
2605                                   __DRI_IMAGE_ATTRIB_FD, fds);
2606
2607    if (strides)
2608       dri2_dpy->image->queryImage(dri2_img->dri_image,
2609                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2610
2611    if (offsets) {
2612       int img_offset;
2613       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2614                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2615       if (ret)
2616          offsets[0] = img_offset;
2617       else
2618          offsets[0] = 0;
2619    }
2620
2621    return EGL_TRUE;
2622 }
2623
2624 #endif
2625
2626 _EGLImage *
2627 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2628                       _EGLContext *ctx, EGLenum target,
2629                       EGLClientBuffer buffer, const EGLint *attr_list)
2630 {
2631    (void) drv;
2632
2633    switch (target) {
2634    case EGL_GL_TEXTURE_2D_KHR:
2635    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2636    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2637    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2638    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2639    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2640    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2641    case EGL_GL_TEXTURE_3D_KHR:
2642       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2643    case EGL_GL_RENDERBUFFER_KHR:
2644       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2645 #ifdef HAVE_LIBDRM
2646    case EGL_DRM_BUFFER_MESA:
2647       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2648    case EGL_LINUX_DMA_BUF_EXT:
2649       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2650 #endif
2651 #ifdef HAVE_WAYLAND_PLATFORM
2652    case EGL_WAYLAND_BUFFER_WL:
2653       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2654 #endif
2655    default:
2656       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2657       return EGL_NO_IMAGE_KHR;
2658    }
2659 }
2660
2661 static EGLBoolean
2662 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2663 {
2664    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2665    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2666
2667    (void) drv;
2668
2669    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2670    free(dri2_img);
2671
2672    return EGL_TRUE;
2673 }
2674
2675 #ifdef HAVE_WAYLAND_PLATFORM
2676
2677 static void
2678 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2679                          struct wl_drm_buffer *buffer)
2680 {
2681    _EGLDisplay *disp = user_data;
2682    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2683    __DRIimage *img;
2684    int dri_components = 0;
2685
2686    if (fd == -1)
2687       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2688                                                   buffer->width,
2689                                                   buffer->height,
2690                                                   buffer->format,
2691                                                   (int*)&name, 1,
2692                                                   buffer->stride,
2693                                                   buffer->offset,
2694                                                   NULL);
2695    else
2696       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2697                                                 buffer->width,
2698                                                 buffer->height,
2699                                                 buffer->format,
2700                                                 &fd, 1,
2701                                                 buffer->stride,
2702                                                 buffer->offset,
2703                                                 NULL);
2704
2705    if (img == NULL)
2706       return;
2707
2708    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2709
2710    buffer->driver_format = NULL;
2711    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2712       if (wl_drm_components[i].dri_components == dri_components)
2713          buffer->driver_format = &wl_drm_components[i];
2714
2715    if (buffer->driver_format == NULL)
2716       dri2_dpy->image->destroyImage(img);
2717    else
2718       buffer->driver_buffer = img;
2719 }
2720
2721 static void
2722 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2723 {
2724    _EGLDisplay *disp = user_data;
2725    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2726
2727    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2728 }
2729
2730 static struct wayland_drm_callbacks wl_drm_callbacks = {
2731         .authenticate = NULL,
2732         .reference_buffer = dri2_wl_reference_buffer,
2733         .release_buffer = dri2_wl_release_buffer
2734 };
2735
2736 static EGLBoolean
2737 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2738                              struct wl_display *wl_dpy)
2739 {
2740    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2741    int flags = 0;
2742    uint64_t cap;
2743
2744    (void) drv;
2745
2746    if (dri2_dpy->wl_server_drm)
2747            return EGL_FALSE;
2748
2749    wl_drm_callbacks.authenticate =
2750       (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate;
2751
2752    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2753        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2754        dri2_dpy->image->base.version >= 7 &&
2755        dri2_dpy->image->createImageFromFds != NULL)
2756       flags |= WAYLAND_DRM_PRIME;
2757
2758    dri2_dpy->wl_server_drm =
2759            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2760                             &wl_drm_callbacks, disp, flags);
2761
2762    if (!dri2_dpy->wl_server_drm)
2763            return EGL_FALSE;
2764
2765 #ifdef HAVE_DRM_PLATFORM
2766    /* We have to share the wl_drm instance with gbm, so gbm can convert
2767     * wl_buffers to gbm bos. */
2768    if (dri2_dpy->gbm_dri)
2769       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2770 #endif
2771
2772    return EGL_TRUE;
2773 }
2774
2775 static EGLBoolean
2776 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2777                                struct wl_display *wl_dpy)
2778 {
2779    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2780
2781    (void) drv;
2782
2783    if (!dri2_dpy->wl_server_drm)
2784            return EGL_FALSE;
2785
2786    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2787    dri2_dpy->wl_server_drm = NULL;
2788
2789    return EGL_TRUE;
2790 }
2791
2792 static EGLBoolean
2793 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2794                              struct wl_resource *buffer_resource,
2795                              EGLint attribute, EGLint *value)
2796 {
2797    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2798    struct wl_drm_buffer *buffer;
2799    const struct wl_drm_components_descriptor *format;
2800
2801    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2802    if (!buffer)
2803       return EGL_FALSE;
2804
2805    format = buffer->driver_format;
2806    switch (attribute) {
2807    case EGL_TEXTURE_FORMAT:
2808       *value = format->components;
2809       return EGL_TRUE;
2810    case EGL_WIDTH:
2811       *value = buffer->width;
2812       return EGL_TRUE;
2813    case EGL_HEIGHT:
2814       *value = buffer->height;
2815       return EGL_TRUE;
2816    }
2817
2818    return EGL_FALSE;
2819 }
2820 #endif
2821
2822 static void
2823 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2824 {
2825    p_atomic_inc(&sync->refcount);
2826 }
2827
2828 static void
2829 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2830                     struct dri2_egl_sync *dri2_sync)
2831 {
2832    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2833       switch (dri2_sync->base.Type) {
2834       case EGL_SYNC_REUSABLE_KHR:
2835          cnd_destroy(&dri2_sync->cond);
2836          break;
2837       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2838          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2839             close(dri2_sync->base.SyncFd);
2840          break;
2841       default:
2842          break;
2843       }
2844
2845       if (dri2_sync->fence)
2846          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2847
2848       free(dri2_sync);
2849    }
2850 }
2851
2852 static _EGLSync *
2853 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
2854                  EGLenum type, const EGLAttrib *attrib_list)
2855 {
2856    _EGLContext *ctx = _eglGetCurrentContext();
2857    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2858    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2859    struct dri2_egl_sync *dri2_sync;
2860    EGLint ret;
2861    pthread_condattr_t attr;
2862
2863    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2864    if (!dri2_sync) {
2865       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2866       return NULL;
2867    }
2868
2869    if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
2870       free(dri2_sync);
2871       return NULL;
2872    }
2873
2874    switch (type) {
2875    case EGL_SYNC_FENCE_KHR:
2876       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2877       if (!dri2_sync->fence) {
2878          /* Why did it fail? DRI doesn't return an error code, so we emit
2879           * a generic EGL error that doesn't communicate user error.
2880           */
2881          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2882          free(dri2_sync);
2883          return NULL;
2884       }
2885       break;
2886
2887    case EGL_SYNC_CL_EVENT_KHR:
2888       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2889                                  dri2_dpy->dri_screen,
2890                                  dri2_sync->base.CLEvent);
2891       /* this can only happen if the cl_event passed in is invalid. */
2892       if (!dri2_sync->fence) {
2893          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2894          free(dri2_sync);
2895          return NULL;
2896       }
2897
2898       /* the initial status must be "signaled" if the cl_event is signaled */
2899       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2900                                             dri2_sync->fence, 0, 0))
2901          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2902       break;
2903
2904    case EGL_SYNC_REUSABLE_KHR:
2905       /* intialize attr */
2906       ret = pthread_condattr_init(&attr);
2907
2908       if (ret) {
2909          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2910          free(dri2_sync);
2911          return NULL;
2912       }
2913
2914       /* change clock attribute to CLOCK_MONOTONIC */
2915       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2916
2917       if (ret) {
2918          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2919          free(dri2_sync);
2920          return NULL;
2921       }
2922
2923       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2924
2925       if (ret) {
2926          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2927          free(dri2_sync);
2928          return NULL;
2929       }
2930
2931       /* initial status of reusable sync must be "unsignaled" */
2932       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2933       break;
2934
2935    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2936       if (dri2_dpy->fence->create_fence_fd) {
2937          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2938                                     dri2_ctx->dri_context,
2939                                     dri2_sync->base.SyncFd);
2940       }
2941       if (!dri2_sync->fence) {
2942          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2943          free(dri2_sync);
2944          return NULL;
2945       }
2946       break;
2947    }
2948
2949    p_atomic_set(&dri2_sync->refcount, 1);
2950    return &dri2_sync->base;
2951 }
2952
2953 static EGLBoolean
2954 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
2955 {
2956    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2957    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
2958    EGLint ret = EGL_TRUE;
2959    EGLint err;
2960
2961    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
2962     * then unlock all threads possibly blocked by the reusable sync before
2963     * destroying it.
2964     */
2965    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
2966        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
2967       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2968       /* unblock all threads currently blocked by sync */
2969       err = cnd_broadcast(&dri2_sync->cond);
2970
2971       if (err) {
2972          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
2973          ret = EGL_FALSE;
2974       }
2975    }
2976
2977    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
2978
2979    return ret;
2980 }
2981
2982 static EGLint
2983 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
2984 {
2985    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2986    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
2987
2988    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
2989
2990    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
2991       /* try to retrieve the actual native fence fd.. if rendering is
2992        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
2993        */
2994       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
2995                                                    dri2_sync->fence);
2996    }
2997
2998    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
2999       /* if native fence fd still not created, return an error: */
3000       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3001       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3002    }
3003
3004    return dup(sync->SyncFd);
3005 }
3006
3007 static EGLint
3008 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3009                       EGLint flags, EGLTime timeout)
3010 {
3011    _EGLContext *ctx = _eglGetCurrentContext();
3012    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
3013    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3014    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3015    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3016    unsigned wait_flags = 0;
3017
3018    /* timespecs for cnd_timedwait */
3019    struct timespec current;
3020    xtime expire;
3021
3022    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3023
3024    /* The EGL_KHR_fence_sync spec states:
3025     *
3026     *    "If no context is current for the bound API,
3027     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3028     */
3029    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3030       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3031
3032    /* the sync object should take a reference while waiting */
3033    dri2_egl_ref_sync(dri2_sync);
3034
3035    switch (sync->Type) {
3036    case EGL_SYNC_FENCE_KHR:
3037    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3038    case EGL_SYNC_CL_EVENT_KHR:
3039       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3040                                          dri2_sync->fence, wait_flags,
3041                                          timeout))
3042          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3043       else
3044          ret = EGL_TIMEOUT_EXPIRED_KHR;
3045       break;
3046
3047    case EGL_SYNC_REUSABLE_KHR:
3048       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3049           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3050          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3051          dri2_drv->glFlush();
3052       }
3053
3054       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3055       if (timeout == EGL_FOREVER_KHR) {
3056          mtx_lock(&dri2_sync->mutex);
3057          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3058          mtx_unlock(&dri2_sync->mutex);
3059       } else {
3060          /* if reusable sync has not been yet signaled */
3061          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3062             clock_gettime(CLOCK_MONOTONIC, &current);
3063
3064             /* calculating when to expire */
3065             expire.nsec = timeout % 1000000000L;
3066             expire.sec = timeout / 1000000000L;
3067
3068             expire.nsec += current.tv_nsec;
3069             expire.sec += current.tv_sec;
3070
3071             /* expire.nsec now is a number between 0 and 1999999998 */
3072             if (expire.nsec > 999999999L) {
3073                expire.sec++;
3074                expire.nsec -= 1000000000L;
3075             }
3076
3077             mtx_lock(&dri2_sync->mutex);
3078             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3079             mtx_unlock(&dri2_sync->mutex);
3080
3081             if (ret == thrd_busy) {
3082                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3083                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3084                } else {
3085                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3086                   ret = EGL_FALSE;
3087                }
3088             }
3089          }
3090       }
3091       break;
3092   }
3093   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3094
3095   return ret;
3096 }
3097
3098 static EGLBoolean
3099 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3100                       EGLenum mode)
3101 {
3102    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3103    EGLint ret;
3104
3105    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3106       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3107
3108    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3109       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3110
3111    dri2_sync->base.SyncStatus = mode;
3112
3113    if (mode == EGL_SIGNALED_KHR) {
3114       ret = cnd_broadcast(&dri2_sync->cond);
3115
3116       /* fail to broadcast */
3117       if (ret)
3118          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3119    }
3120
3121    return EGL_TRUE;
3122 }
3123
3124 static EGLint
3125 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3126 {
3127    _EGLContext *ctx = _eglGetCurrentContext();
3128    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3129    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3130    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3131
3132    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3133                                      dri2_sync->fence, 0);
3134    return EGL_TRUE;
3135 }
3136
3137 static int
3138 dri2_interop_query_device_info(_EGLDisplay *dpy, _EGLContext *ctx,
3139                                struct mesa_glinterop_device_info *out)
3140 {
3141    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3142    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3143
3144    if (!dri2_dpy->interop)
3145       return MESA_GLINTEROP_UNSUPPORTED;
3146
3147    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3148 }
3149
3150 static int
3151 dri2_interop_export_object(_EGLDisplay *dpy, _EGLContext *ctx,
3152                            struct mesa_glinterop_export_in *in,
3153                            struct mesa_glinterop_export_out *out)
3154 {
3155    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3156    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3157
3158    if (!dri2_dpy->interop)
3159       return MESA_GLINTEROP_UNSUPPORTED;
3160
3161    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3162 }
3163
3164 static void
3165 dri2_unload(_EGLDriver *drv)
3166 {
3167    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
3168
3169    free(dri2_drv);
3170 }
3171
3172 static EGLBoolean
3173 dri2_load(_EGLDriver *drv)
3174 {
3175    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
3176
3177    dri2_drv->glFlush = (void (*)(void))
3178       _glapi_get_proc_address("glFlush");
3179
3180    /* if glFlush is not available things are horribly broken */
3181    if (!dri2_drv->glFlush) {
3182       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
3183       return EGL_FALSE;
3184    }
3185
3186    return EGL_TRUE;
3187 }
3188
3189 /**
3190  * This is the main entrypoint into the driver, called by libEGL.
3191  * Create a new _EGLDriver object and init its dispatch table.
3192  */
3193 _EGLDriver *
3194 _eglBuiltInDriver(void)
3195 {
3196    struct dri2_egl_driver *dri2_drv;
3197
3198    dri2_drv = calloc(1, sizeof *dri2_drv);
3199    if (!dri2_drv)
3200       return NULL;
3201
3202    if (!dri2_load(&dri2_drv->base)) {
3203       free(dri2_drv);
3204       return NULL;
3205    }
3206
3207    _eglInitDriverFallbacks(&dri2_drv->base);
3208    dri2_drv->base.API.Initialize = dri2_initialize;
3209    dri2_drv->base.API.Terminate = dri2_terminate;
3210    dri2_drv->base.API.CreateContext = dri2_create_context;
3211    dri2_drv->base.API.DestroyContext = dri2_destroy_context;
3212    dri2_drv->base.API.MakeCurrent = dri2_make_current;
3213    dri2_drv->base.API.CreateWindowSurface = dri2_create_window_surface;
3214    dri2_drv->base.API.CreatePixmapSurface = dri2_create_pixmap_surface;
3215    dri2_drv->base.API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3216    dri2_drv->base.API.DestroySurface = dri2_destroy_surface;
3217    dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
3218    dri2_drv->base.API.WaitClient = dri2_wait_client;
3219    dri2_drv->base.API.WaitNative = dri2_wait_native;
3220    dri2_drv->base.API.BindTexImage = dri2_bind_tex_image;
3221    dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image;
3222    dri2_drv->base.API.SwapInterval = dri2_swap_interval;
3223    dri2_drv->base.API.SwapBuffers = dri2_swap_buffers;
3224    dri2_drv->base.API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3225    dri2_drv->base.API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3226    dri2_drv->base.API.SetDamageRegion = dri2_set_damage_region;
3227    dri2_drv->base.API.PostSubBufferNV = dri2_post_sub_buffer;
3228    dri2_drv->base.API.CopyBuffers = dri2_copy_buffers,
3229    dri2_drv->base.API.QueryBufferAge = dri2_query_buffer_age;
3230    dri2_drv->base.API.CreateImageKHR = dri2_create_image;
3231    dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr;
3232    dri2_drv->base.API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3233    dri2_drv->base.API.QuerySurface = dri2_query_surface;
3234 #ifdef HAVE_LIBDRM
3235    dri2_drv->base.API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3236    dri2_drv->base.API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3237    dri2_drv->base.API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3238    dri2_drv->base.API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3239    dri2_drv->base.API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3240    dri2_drv->base.API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3241 #endif
3242 #ifdef HAVE_WAYLAND_PLATFORM
3243    dri2_drv->base.API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3244    dri2_drv->base.API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3245    dri2_drv->base.API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3246 #endif
3247    dri2_drv->base.API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3248    dri2_drv->base.API.CreateSyncKHR = dri2_create_sync;
3249    dri2_drv->base.API.ClientWaitSyncKHR = dri2_client_wait_sync;
3250    dri2_drv->base.API.SignalSyncKHR = dri2_signal_sync;
3251    dri2_drv->base.API.WaitSyncKHR = dri2_server_wait_sync;
3252    dri2_drv->base.API.DestroySyncKHR = dri2_destroy_sync;
3253    dri2_drv->base.API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3254    dri2_drv->base.API.GLInteropExportObject = dri2_interop_export_object;
3255    dri2_drv->base.API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3256
3257    dri2_drv->base.Name = "DRI2";
3258    dri2_drv->base.Unload = dri2_unload;
3259
3260    return &dri2_drv->base;
3261 }