src/egl/drivers/dri2/egl_dri2.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdbool.h>
  29 #include <stdint.h>
  30 #include <stdbool.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdio.h>
  34 #include <limits.h>
  35 #include <dlfcn.h>
  36 #include <fcntl.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <c11/threads.h>
  40 #include <time.h>
  41 #ifdef HAVE_LIBDRM
  42 #include <xf86drm.h>
  43 #include <drm_fourcc.h>
  44 #endif
  45 #include <GL/gl.h>
  46 #include <GL/internal/dri_interface.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49
  50 #ifdef HAVE_WAYLAND_PLATFORM
  51 #include "wayland-drm.h"
  52 #include "wayland-drm-client-protocol.h"
  53 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  54 #endif
  55
  56 #ifdef HAVE_X11_PLATFORM
  57 #include "X11/Xlibint.h"
  58 #endif
  59
  60 #include "egl_dri2.h"
  61 #include "GL/mesa_glinterop.h"
  62 #include "loader/loader.h"
  63 #include "util/u_atomic.h"
  64 #include "util/u_vector.h"
  65 #include "mapi/glapi/glapi.h"
  66
  67 /* The kernel header drm_fourcc.h defines the DRM formats below.  We duplicate
  68  * some of the definitions here so that building Mesa won't bleeding-edge
  69  * kernel headers.
  70  */
  71 #ifndef DRM_FORMAT_R8
  72 #define DRM_FORMAT_R8            fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
  73 #endif
  74
  75 #ifndef DRM_FORMAT_RG88
  76 #define DRM_FORMAT_RG88          fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
  77 #endif
  78
  79 #ifndef DRM_FORMAT_GR88
  80 #define DRM_FORMAT_GR88          fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
  81 #endif
  82
  83 #ifndef DRM_FORMAT_R16
  84 #define DRM_FORMAT_R16           fourcc_code('R', '1', '6', ' ') /* [15:0] R 16 little endian */
  85 #endif
  86
  87 #ifndef DRM_FORMAT_GR1616
  88 #define DRM_FORMAT_GR1616        fourcc_code('G', 'R', '3', '2') /* [31:0] R:G 16:16 little endian */
  89 #endif
  90
  91 #ifndef DRM_FORMAT_MOD_INVALID
  92 #define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
  93 #endif
  94
  95 #define NUM_ATTRIBS 12
  96
  97 static void
  98 dri_set_background_context(void *loaderPrivate)
  99 {
 100    _EGLContext *ctx = _eglGetCurrentContext();
 101    _EGLThreadInfo *t = _eglGetCurrentThread();
 102
 103    _eglBindContextToThread(ctx, t);
 104 }
 105
 106 static void
 107 dri2_gl_flush()
 108 {
 109    static void (*glFlush)(void);
 110    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 111
 112    mtx_lock(&glFlushMutex);
 113    if (!glFlush)
 114       glFlush = _glapi_get_proc_address("glFlush");
 115    mtx_unlock(&glFlushMutex);
 116
 117    /* if glFlush is not available things are horribly broken */
 118    if (!glFlush) {
 119       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 120       return;
 121    }
 122
 123    glFlush();
 124 }
 125
 126 static GLboolean
 127 dri_is_thread_safe(void *loaderPrivate)
 128 {
 129    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 130    _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 131
 132 #ifdef HAVE_X11_PLATFORM
 133    Display *xdpy = (Display*)display->PlatformDisplay;
 134
 135    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 136     * platform
 137     *
 138     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 139     * It wll be NULL if XInitThreads wasn't called.
 140     */
 141    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 142       return false;
 143 #endif
 144
 145 #ifdef HAVE_WAYLAND_PLATFORM
 146    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 147       return true;
 148 #endif
 149
 150    return true;
 151 }
 152
 153 const __DRIbackgroundCallableExtension background_callable_extension = {
 154    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 155
 156    .setBackgroundContext = dri_set_background_context,
 157    .isThreadSafe         = dri_is_thread_safe,
 158 };
 159
 160 const __DRIuseInvalidateExtension use_invalidate = {
 161    .base = { __DRI_USE_INVALIDATE, 1 }
 162 };
 163
 164 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 165    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 166    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 167    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,
 168    [__DRI_ATTRIB_GREEN_SIZE]            = EGL_GREEN_SIZE,
 169    [__DRI_ATTRIB_BLUE_SIZE]             = EGL_BLUE_SIZE,
 170    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 171    [__DRI_ATTRIB_ALPHA_SIZE]            = EGL_ALPHA_SIZE,
 172    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 173    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 174    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 175    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 176    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 177    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 178    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 179    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 180    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 181    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 182 };
 183
 184 const __DRIconfig *
 185 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 186                     EGLenum colorspace)
 187 {
 188    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 189    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 190
 191    return conf->dri_config[double_buffer][srgb];
 192 }
 193
 194 static EGLBoolean
 195 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 196 {
 197    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 198       return EGL_FALSE;
 199
 200    if (!_eglMatchConfig(conf, criteria))
 201       return EGL_FALSE;
 202
 203    return EGL_TRUE;
 204 }
 205
 206 struct dri2_egl_config *
 207 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 208                 EGLint surface_type, const EGLint *attr_list,
 209                 const unsigned int *rgba_masks)
 210 {
 211    struct dri2_egl_config *conf;
 212    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 213    _EGLConfig base;
 214    unsigned int attrib, value, double_buffer;
 215    bool srgb = false;
 216    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 217    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 218    _EGLConfig *matching_config;
 219    EGLint num_configs = 0;
 220    EGLint config_id;
 221
 222    _eglInitConfig(&base, disp, id);
 223
 224    double_buffer = 0;
 225    bind_to_texture_rgb = 0;
 226    bind_to_texture_rgba = 0;
 227
 228    for (int i = 0; dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib,
 229                                                      &value); ++i) {
 230       switch (attrib) {
 231       case __DRI_ATTRIB_RENDER_TYPE:
 232          if (value & __DRI_ATTRIB_RGBA_BIT)
 233             value = EGL_RGB_BUFFER;
 234          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 235             value = EGL_LUMINANCE_BUFFER;
 236          else
 237             return NULL;
 238          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 239          break;
 240
 241       case __DRI_ATTRIB_CONFIG_CAVEAT:
 242          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 243             value = EGL_NON_CONFORMANT_CONFIG;
 244          else if (value & __DRI_ATTRIB_SLOW_BIT)
 245             value = EGL_SLOW_CONFIG;
 246          else
 247             value = EGL_NONE;
 248          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 249          break;
 250
 251       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 252          bind_to_texture_rgb = value;
 253          break;
 254
 255       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 256          bind_to_texture_rgba = value;
 257          break;
 258
 259       case __DRI_ATTRIB_DOUBLE_BUFFER:
 260          double_buffer = value;
 261          break;
 262
 263       case __DRI_ATTRIB_RED_MASK:
 264          dri_masks[0] = value;
 265          break;
 266
 267       case __DRI_ATTRIB_GREEN_MASK:
 268          dri_masks[1] = value;
 269          break;
 270
 271       case __DRI_ATTRIB_BLUE_MASK:
 272          dri_masks[2] = value;
 273          break;
 274
 275       case __DRI_ATTRIB_ALPHA_MASK:
 276          dri_masks[3] = value;
 277          break;
 278
 279       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 280       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 281       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 282       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 283          /* Don't expose visuals with the accumulation buffer. */
 284          if (value > 0)
 285             return NULL;
 286          break;
 287
 288       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 289          srgb = value != 0;
 290          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 291             return NULL;
 292          break;
 293
 294       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 295          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 296                           _EGL_MAX_PBUFFER_WIDTH);
 297          break;
 298       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 299          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 300                           _EGL_MAX_PBUFFER_HEIGHT);
 301          break;
 302
 303       default:
 304          key = dri2_to_egl_attribute_map[attrib];
 305          if (key != 0)
 306             _eglSetConfigKey(&base, key, value);
 307          break;
 308       }
 309    }
 310
 311    if (attr_list)
 312       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 313          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 314
 315    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 316       return NULL;
 317
 318    base.NativeRenderable = EGL_TRUE;
 319
 320    base.SurfaceType = surface_type;
 321    if (surface_type & (EGL_PBUFFER_BIT |
 322        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 323       base.BindToTextureRGB = bind_to_texture_rgb;
 324       if (base.AlphaSize > 0)
 325          base.BindToTextureRGBA = bind_to_texture_rgba;
 326    }
 327
 328    base.RenderableType = disp->ClientAPIs;
 329    base.Conformant = disp->ClientAPIs;
 330
 331    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 332    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 333
 334    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 335       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 336       return NULL;
 337    }
 338
 339    config_id = base.ConfigID;
 340    base.ConfigID    = EGL_DONT_CARE;
 341    base.SurfaceType = EGL_DONT_CARE;
 342    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 343                                  (_EGLArrayForEach) dri2_match_config, &base);
 344
 345    if (num_configs == 1) {
 346       conf = (struct dri2_egl_config *) matching_config;
 347
 348       if (!conf->dri_config[double_buffer][srgb])
 349          conf->dri_config[double_buffer][srgb] = dri_config;
 350       else
 351          /* a similar config type is already added (unlikely) => discard */
 352          return NULL;
 353    }
 354    else if (num_configs == 0) {
 355       conf = calloc(1, sizeof *conf);
 356       if (conf == NULL)
 357          return NULL;
 358
 359       conf->dri_config[double_buffer][srgb] = dri_config;
 360
 361       memcpy(&conf->base, &base, sizeof base);
 362       conf->base.SurfaceType = 0;
 363       conf->base.ConfigID = config_id;
 364
 365       _eglLinkConfig(&conf->base);
 366    }
 367    else {
 368       assert(0);
 369       return NULL;
 370    }
 371
 372    if (double_buffer) {
 373       surface_type &= ~EGL_PIXMAP_BIT;
 374    }
 375
 376    /* No support for pbuffer + MSAA for now.
 377     *
 378     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 379     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 380     */
 381    if (base.Samples) {
 382       surface_type &= ~EGL_PBUFFER_BIT;
 383    }
 384
 385    conf->base.SurfaceType |= surface_type;
 386
 387    return conf;
 388 }
 389
 390 __DRIimage *
 391 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 392 {
 393    _EGLDisplay *disp = data;
 394    struct dri2_egl_image *dri2_img;
 395    _EGLImage *img;
 396
 397    (void) screen;
 398
 399    img = _eglLookupImage(image, disp);
 400    if (img == NULL) {
 401       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 402       return NULL;
 403    }
 404
 405    dri2_img = dri2_egl_image(image);
 406
 407    return dri2_img->dri_image;
 408 }
 409
 410 const __DRIimageLookupExtension image_lookup_extension = {
 411    .base = { __DRI_IMAGE_LOOKUP, 1 },
 412
 413    .lookupEGLImage       = dri2_lookup_egl_image
 414 };
 415
 416 struct dri2_extension_match {
 417    const char *name;
 418    int version;
 419    int offset;
 420 };
 421
 422 static const struct dri2_extension_match dri3_driver_extensions[] = {
 423    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 424    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 425    { NULL, 0, 0 }
 426 };
 427
 428 static const struct dri2_extension_match dri2_driver_extensions[] = {
 429    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 430    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 431    { NULL, 0, 0 }
 432 };
 433
 434 static const struct dri2_extension_match dri2_core_extensions[] = {
 435    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 436    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 437    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 438    { NULL, 0, 0 }
 439 };
 440
 441 static const struct dri2_extension_match swrast_driver_extensions[] = {
 442    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 443    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 444    { NULL, 0, 0 }
 445 };
 446
 447 static const struct dri2_extension_match swrast_core_extensions[] = {
 448    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 449    { NULL, 0, 0 }
 450 };
 451
 452 static const struct dri2_extension_match optional_core_extensions[] = {
 453    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 454    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 455    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 456    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 457    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 458    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 459    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 460    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 461    { NULL, 0, 0 }
 462 };
 463
 464 static EGLBoolean
 465 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 466                      const struct dri2_extension_match *matches,
 467                      const __DRIextension **extensions,
 468                      bool optional)
 469 {
 470    int ret = EGL_TRUE;
 471    void *field;
 472
 473    for (int i = 0; extensions[i]; i++) {
 474       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 475       for (int j = 0; matches[j].name; j++) {
 476          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 477              extensions[i]->version >= matches[j].version) {
 478             field = ((char *) dri2_dpy + matches[j].offset);
 479             *(const __DRIextension **) field = extensions[i];
 480             _eglLog(_EGL_INFO, "found extension %s version %d",
 481                     extensions[i]->name, extensions[i]->version);
 482             break;
 483          }
 484       }
 485    }
 486
 487    for (int j = 0; matches[j].name; j++) {
 488       field = ((char *) dri2_dpy + matches[j].offset);
 489       if (*(const __DRIextension **) field == NULL) {
 490          if (optional) {
 491             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 492                     matches[j].name, matches[j].version);
 493          } else {
 494             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 495                     matches[j].name, matches[j].version);
 496             ret = EGL_FALSE;
 497          }
 498       }
 499    }
 500
 501    return ret;
 502 }
 503
 504 static const __DRIextension **
 505 dri2_open_driver(_EGLDisplay *disp)
 506 {
 507    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 508    const __DRIextension **extensions = NULL;
 509    char path[PATH_MAX], *search_paths, *next, *end;
 510    char *get_extensions_name;
 511    const __DRIextension **(*get_extensions)(void);
 512
 513    search_paths = NULL;
 514    if (geteuid() == getuid()) {
 515       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 516       search_paths = getenv("LIBGL_DRIVERS_PATH");
 517    }
 518    if (search_paths == NULL)
 519       search_paths = DEFAULT_DRIVER_DIR;
 520
 521    dri2_dpy->driver = NULL;
 522    end = search_paths + strlen(search_paths);
 523    for (char *p = search_paths; p < end; p = next + 1) {
 524       int len;
 525       next = strchr(p, ':');
 526       if (next == NULL)
 527          next = end;
 528
 529       len = next - p;
 530 #if GLX_USE_TLS
 531       snprintf(path, sizeof path,
 532                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 533       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 534 #endif
 535       if (dri2_dpy->driver == NULL) {
 536          snprintf(path, sizeof path,
 537                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 538          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 539          if (dri2_dpy->driver == NULL)
 540             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 541       }
 542       /* not need continue to loop all paths once the driver is found */
 543       if (dri2_dpy->driver != NULL)
 544          break;
 545    }
 546
 547    if (dri2_dpy->driver == NULL) {
 548       _eglLog(_EGL_WARNING,
 549               "DRI2: failed to open %s (search paths %s)",
 550               dri2_dpy->driver_name, search_paths);
 551       return NULL;
 552    }
 553
 554    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 555
 556    get_extensions_name = loader_get_extensions_name(dri2_dpy->driver_name);
 557    if (get_extensions_name) {
 558       get_extensions = dlsym(dri2_dpy->driver, get_extensions_name);
 559       if (get_extensions) {
 560          extensions = get_extensions();
 561       } else {
 562          _eglLog(_EGL_DEBUG, "driver does not expose %s(): %s\n",
 563                  get_extensions_name, dlerror());
 564       }
 565       free(get_extensions_name);
 566    }
 567
 568    if (!extensions)
 569       extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 570    if (extensions == NULL) {
 571       _eglLog(_EGL_WARNING,
 572               "DRI2: driver exports no extensions (%s)", dlerror());
 573       dlclose(dri2_dpy->driver);
 574    }
 575
 576    return extensions;
 577 }
 578
 579 EGLBoolean
 580 dri2_load_driver_dri3(_EGLDisplay *disp)
 581 {
 582    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 583    const __DRIextension **extensions;
 584
 585    extensions = dri2_open_driver(disp);
 586    if (!extensions)
 587       return EGL_FALSE;
 588
 589    if (!dri2_bind_extensions(dri2_dpy, dri3_driver_extensions, extensions, false)) {
 590       dlclose(dri2_dpy->driver);
 591       return EGL_FALSE;
 592    }
 593    dri2_dpy->driver_extensions = extensions;
 594
 595    return EGL_TRUE;
 596 }
 597
 598 EGLBoolean
 599 dri2_load_driver(_EGLDisplay *disp)
 600 {
 601    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 602    const __DRIextension **extensions;
 603
 604    extensions = dri2_open_driver(disp);
 605    if (!extensions)
 606       return EGL_FALSE;
 607
 608    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions, false)) {
 609       dlclose(dri2_dpy->driver);
 610       return EGL_FALSE;
 611    }
 612    dri2_dpy->driver_extensions = extensions;
 613
 614    return EGL_TRUE;
 615 }
 616
 617 EGLBoolean
 618 dri2_load_driver_swrast(_EGLDisplay *disp)
 619 {
 620    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 621    const __DRIextension **extensions;
 622
 623    extensions = dri2_open_driver(disp);
 624    if (!extensions)
 625       return EGL_FALSE;
 626
 627    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions, false)) {
 628       dlclose(dri2_dpy->driver);
 629       return EGL_FALSE;
 630    }
 631    dri2_dpy->driver_extensions = extensions;
 632
 633    return EGL_TRUE;
 634 }
 635
 636 static unsigned
 637 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 638 {
 639    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 640    unsigned int value = 0;
 641
 642    if (!rendererQuery ||
 643        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 644       return 0;
 645
 646    return value;
 647 }
 648
 649 void
 650 dri2_setup_screen(_EGLDisplay *disp)
 651 {
 652    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 653    unsigned int api_mask;
 654
 655    /*
 656     * EGL 1.5 specification defines the default value to 1. Moreover,
 657     * eglSwapInterval() is required to clamp requested value to the supported
 658     * range. Since the default value is implicitly assumed to be supported,
 659     * use it as both minimum and maximum for the platforms that do not allow
 660     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 661     * override these values already.
 662     */
 663    dri2_dpy->min_swap_interval = 1;
 664    dri2_dpy->max_swap_interval = 1;
 665    dri2_dpy->default_swap_interval = 1;
 666
 667    if (dri2_dpy->image_driver) {
 668       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 669    } else if (dri2_dpy->dri2) {
 670       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 671    } else {
 672       assert(dri2_dpy->swrast);
 673       api_mask = 1 << __DRI_API_OPENGL |
 674                  1 << __DRI_API_GLES |
 675                  1 << __DRI_API_GLES2 |
 676                  1 << __DRI_API_GLES3;
 677    }
 678
 679    disp->ClientAPIs = 0;
 680    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 681       disp->ClientAPIs |= EGL_OPENGL_BIT;
 682    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 683       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 684    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 685       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 686    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 687       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 688
 689    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 690    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 691    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 692
 693    /* Report back to EGL the bitmask of priorities supported */
 694    disp->Extensions.IMG_context_priority =
 695       dri2_renderer_query_integer(dri2_dpy,
 696                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 697
 698    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 699
 700    if (dri2_renderer_query_integer(dri2_dpy,
 701                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 702       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 703
 704    if (dri2_dpy->image_driver ||
 705        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 706        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 707       disp->Extensions.KHR_create_context = EGL_TRUE;
 708
 709       if (dri2_dpy->robustness)
 710          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 711    }
 712
 713    if (dri2_dpy->no_error)
 714       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 715
 716    if (dri2_dpy->fence) {
 717       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 718       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 719       if (dri2_dpy->fence->get_fence_from_cl_event)
 720          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 721       if (dri2_dpy->fence->base.version >= 2 &&
 722           dri2_dpy->fence->get_capabilities) {
 723          unsigned capabilities =
 724             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 725          disp->Extensions.ANDROID_native_fence_sync =
 726             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 727       }
 728    }
 729
 730    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 731
 732    if (dri2_dpy->image) {
 733       if (dri2_dpy->image->base.version >= 10 &&
 734           dri2_dpy->image->getCapabilities != NULL) {
 735          int capabilities;
 736
 737          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 738          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 739
 740          if (dri2_dpy->image->base.version >= 11)
 741             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 742       } else {
 743          disp->Extensions.MESA_drm_image = EGL_TRUE;
 744          if (dri2_dpy->image->base.version >= 11)
 745             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 746       }
 747
 748       disp->Extensions.KHR_image_base = EGL_TRUE;
 749       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 750       if (dri2_dpy->image->base.version >= 5 &&
 751           dri2_dpy->image->createImageFromTexture) {
 752          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 753          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 754
 755          if (dri2_renderer_query_integer(dri2_dpy,
 756                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 757              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 758       }
 759 #ifdef HAVE_LIBDRM
 760       if (dri2_dpy->image->base.version >= 8 &&
 761           dri2_dpy->image->createImageFromDmaBufs) {
 762          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 763       }
 764       if (dri2_dpy->image->base.version >= 15 &&
 765           dri2_dpy->image->createImageFromDmaBufs2 &&
 766           dri2_dpy->image->queryDmaBufFormats &&
 767           dri2_dpy->image->queryDmaBufModifiers) {
 768          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 769       }
 770 #endif
 771    }
 772
 773    if (dri2_dpy->flush_control)
 774       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 775 }
 776
 777 void
 778 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 779 {
 780    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 781    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 782
 783    /* Allow driconf to override applications.*/
 784    if (dri2_dpy->config)
 785       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 786                                      "vblank_mode", &vblank_mode);
 787    switch (vblank_mode) {
 788    case DRI_CONF_VBLANK_NEVER:
 789       dri2_dpy->min_swap_interval = 0;
 790       dri2_dpy->max_swap_interval = 0;
 791       dri2_dpy->default_swap_interval = 0;
 792       break;
 793    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 794       dri2_dpy->min_swap_interval = 1;
 795       dri2_dpy->max_swap_interval = max_swap_interval;
 796       dri2_dpy->default_swap_interval = 1;
 797       break;
 798    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 799       dri2_dpy->min_swap_interval = 0;
 800       dri2_dpy->max_swap_interval = max_swap_interval;
 801       dri2_dpy->default_swap_interval = 0;
 802       break;
 803    default:
 804    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 805       dri2_dpy->min_swap_interval = 0;
 806       dri2_dpy->max_swap_interval = max_swap_interval;
 807       dri2_dpy->default_swap_interval = 1;
 808       break;
 809    }
 810 }
 811
 812 /* All platforms but DRM call this function to create the screen and populate
 813  * the driver_configs. DRM inherits that information from its display - GBM.
 814  */
 815 EGLBoolean
 816 dri2_create_screen(_EGLDisplay *disp)
 817 {
 818    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 819
 820    if (dri2_dpy->image_driver) {
 821       dri2_dpy->dri_screen =
 822          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 823                                                   dri2_dpy->loader_extensions,
 824                                                   dri2_dpy->driver_extensions,
 825                                                   &dri2_dpy->driver_configs,
 826                                                   disp);
 827    } else if (dri2_dpy->dri2) {
 828       if (dri2_dpy->dri2->base.version >= 4) {
 829          dri2_dpy->dri_screen =
 830             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 831                                              dri2_dpy->loader_extensions,
 832                                              dri2_dpy->driver_extensions,
 833                                              &dri2_dpy->driver_configs, disp);
 834       } else {
 835          dri2_dpy->dri_screen =
 836             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 837                                             dri2_dpy->loader_extensions,
 838                                             &dri2_dpy->driver_configs, disp);
 839       }
 840    } else {
 841       assert(dri2_dpy->swrast);
 842       if (dri2_dpy->swrast->base.version >= 4) {
 843          dri2_dpy->dri_screen =
 844             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 845                                                dri2_dpy->driver_extensions,
 846                                                &dri2_dpy->driver_configs, disp);
 847       } else {
 848          dri2_dpy->dri_screen =
 849             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 850                                               &dri2_dpy->driver_configs, disp);
 851       }
 852    }
 853
 854    if (dri2_dpy->dri_screen == NULL) {
 855       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 856       return EGL_FALSE;
 857    }
 858
 859    dri2_dpy->own_dri_screen = true;
 860    return EGL_TRUE;
 861 }
 862
 863 EGLBoolean
 864 dri2_setup_extensions(_EGLDisplay *disp)
 865 {
 866    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 867    const struct dri2_extension_match *mandatory_core_extensions;
 868    const __DRIextension **extensions;
 869
 870    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 871
 872    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 873       mandatory_core_extensions = dri2_core_extensions;
 874    else
 875       mandatory_core_extensions = swrast_core_extensions;
 876
 877    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 878       return EGL_FALSE;
 879
 880    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 881    return EGL_TRUE;
 882 }
 883
 884 /**
 885  * Called via eglInitialize(), GLX_drv->API.Initialize().
 886  *
 887  * This must be guaranteed to be called exactly once, even if eglInitialize is
 888  * called many times (without a eglTerminate in between).
 889  */
 890 static EGLBoolean
 891 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 892 {
 893    EGLBoolean ret = EGL_FALSE;
 894    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 895
 896    /* In the case where the application calls eglMakeCurrent(context1),
 897     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 898     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 899     * initialized, as we need it to be able to free context1 correctly.
 900     *
 901     * It would probably be safest to forcibly release the display with
 902     * dri2_display_release, to make sure the display is reinitialized correctly.
 903     * However, the EGL spec states that we need to keep a reference to the
 904     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 905     * we would leak context1 as we would be missing the old display connection
 906     * to free it up correctly.
 907     */
 908    if (dri2_dpy) {
 909       dri2_dpy->ref_count++;
 910       return EGL_TRUE;
 911    }
 912
 913    /* not until swrast_dri is supported */
 914    if (disp->Options.UseFallback)
 915       return EGL_FALSE;
 916
 917    switch (disp->Platform) {
 918    case _EGL_PLATFORM_SURFACELESS:
 919       ret = dri2_initialize_surfaceless(drv, disp);
 920       break;
 921    case _EGL_PLATFORM_X11:
 922       ret = dri2_initialize_x11(drv, disp);
 923       break;
 924    case _EGL_PLATFORM_DRM:
 925       ret = dri2_initialize_drm(drv, disp);
 926       break;
 927    case _EGL_PLATFORM_WAYLAND:
 928       ret = dri2_initialize_wayland(drv, disp);
 929       break;
 930    case _EGL_PLATFORM_ANDROID:
 931       ret = dri2_initialize_android(drv, disp);
 932       break;
 933    default:
 934       unreachable("Callers ensure we cannot get here.");
 935       return EGL_FALSE;
 936    }
 937
 938    if (!ret)
 939       return EGL_FALSE;
 940
 941    dri2_dpy = dri2_egl_display(disp);
 942    dri2_dpy->ref_count++;
 943
 944    return EGL_TRUE;
 945 }
 946
 947 /**
 948  * Decrement display reference count, and free up display if necessary.
 949  */
 950 static void
 951 dri2_display_release(_EGLDisplay *disp)
 952 {
 953    struct dri2_egl_display *dri2_dpy;
 954
 955    if (!disp)
 956       return;
 957
 958    dri2_dpy = dri2_egl_display(disp);
 959
 960    assert(dri2_dpy->ref_count > 0);
 961    dri2_dpy->ref_count--;
 962
 963    if (dri2_dpy->ref_count > 0)
 964       return;
 965
 966    _eglCleanupDisplay(disp);
 967    dri2_display_destroy(disp);
 968 }
 969
 970 void
 971 dri2_display_destroy(_EGLDisplay *disp)
 972 {
 973    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 974
 975    if (dri2_dpy->own_dri_screen) {
 976       if (dri2_dpy->vtbl->close_screen_notify)
 977          dri2_dpy->vtbl->close_screen_notify(disp);
 978       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 979    }
 980    if (dri2_dpy->fd >= 0)
 981       close(dri2_dpy->fd);
 982    if (dri2_dpy->driver)
 983       dlclose(dri2_dpy->driver);
 984    free(dri2_dpy->driver_name);
 985
 986 #ifdef HAVE_WAYLAND_PLATFORM
 987    free(dri2_dpy->device_name);
 988 #endif
 989
 990    switch (disp->Platform) {
 991 #ifdef HAVE_X11_PLATFORM
 992    case _EGL_PLATFORM_X11:
 993       if (dri2_dpy->own_device) {
 994          xcb_disconnect(dri2_dpy->conn);
 995       }
 996       break;
 997 #endif
 998 #ifdef HAVE_DRM_PLATFORM
 999    case _EGL_PLATFORM_DRM:
1000       if (dri2_dpy->own_device) {
1001          gbm_device_destroy(&dri2_dpy->gbm_dri->base);
1002       }
1003       break;
1004 #endif
1005 #ifdef HAVE_WAYLAND_PLATFORM
1006    case _EGL_PLATFORM_WAYLAND:
1007       if (dri2_dpy->wl_drm)
1008           wl_drm_destroy(dri2_dpy->wl_drm);
1009       if (dri2_dpy->wl_dmabuf)
1010           zwp_linux_dmabuf_v1_destroy(dri2_dpy->wl_dmabuf);
1011       if (dri2_dpy->wl_shm)
1012           wl_shm_destroy(dri2_dpy->wl_shm);
1013       if (dri2_dpy->wl_registry)
1014          wl_registry_destroy(dri2_dpy->wl_registry);
1015       if (dri2_dpy->wl_queue)
1016          wl_event_queue_destroy(dri2_dpy->wl_queue);
1017       if (dri2_dpy->wl_dpy_wrapper)
1018          wl_proxy_wrapper_destroy(dri2_dpy->wl_dpy_wrapper);
1019       u_vector_finish(&dri2_dpy->wl_modifiers.argb8888);
1020       u_vector_finish(&dri2_dpy->wl_modifiers.xrgb8888);
1021       u_vector_finish(&dri2_dpy->wl_modifiers.rgb565);
1022       if (dri2_dpy->own_device) {
1023          wl_display_disconnect(dri2_dpy->wl_dpy);
1024       }
1025       break;
1026 #endif
1027    default:
1028       break;
1029    }
1030
1031    /* The drm platform does not create the screen/driver_configs but reuses
1032     * the ones from the gbm device. As such the gbm itself is responsible
1033     * for the cleanup.
1034     */
1035    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1036       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1037          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1038       free(dri2_dpy->driver_configs);
1039    }
1040    free(dri2_dpy);
1041    disp->DriverData = NULL;
1042 }
1043
1044 __DRIbuffer *
1045 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1046                                     unsigned int att, unsigned int format)
1047 {
1048    struct dri2_egl_display *dri2_dpy =
1049       dri2_egl_display(dri2_surf->base.Resource.Display);
1050
1051    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1052       return NULL;
1053
1054    if (!dri2_surf->local_buffers[att]) {
1055       dri2_surf->local_buffers[att] =
1056          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1057                                         dri2_surf->base.Width, dri2_surf->base.Height);
1058    }
1059
1060    return dri2_surf->local_buffers[att];
1061 }
1062
1063 void
1064 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1065 {
1066    struct dri2_egl_display *dri2_dpy =
1067       dri2_egl_display(dri2_surf->base.Resource.Display);
1068
1069    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1070       if (dri2_surf->local_buffers[i]) {
1071          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1072                                        dri2_surf->local_buffers[i]);
1073          dri2_surf->local_buffers[i] = NULL;
1074       }
1075    }
1076 }
1077
1078 /**
1079  * Called via eglTerminate(), drv->API.Terminate().
1080  *
1081  * This must be guaranteed to be called exactly once, even if eglTerminate is
1082  * called many times (without a eglInitialize in between).
1083  */
1084 static EGLBoolean
1085 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1086 {
1087    /* Release all non-current Context/Surfaces. */
1088    _eglReleaseDisplayResources(drv, disp);
1089
1090    dri2_display_release(disp);
1091
1092    return EGL_TRUE;
1093 }
1094
1095 /**
1096  * Set the error code after a call to
1097  * dri2_egl_display::dri2::createContextAttribs.
1098  */
1099 static void
1100 dri2_create_context_attribs_error(int dri_error)
1101 {
1102    EGLint egl_error;
1103
1104    switch (dri_error) {
1105    case __DRI_CTX_ERROR_SUCCESS:
1106       return;
1107
1108    case __DRI_CTX_ERROR_NO_MEMORY:
1109       egl_error = EGL_BAD_ALLOC;
1110       break;
1111
1112   /* From the EGL_KHR_create_context spec, section "Errors":
1113    *
1114    *   * If <config> does not support a client API context compatible
1115    *     with the requested API major and minor version, [...] context flags,
1116    *     and context reset notification behavior (for client API types where
1117    *     these attributes are supported), then an EGL_BAD_MATCH error is
1118    *     generated.
1119    *
1120    *   * If an OpenGL ES context is requested and the values for
1121    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1122    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1123    *     is not defined, than an EGL_BAD_MATCH error is generated.
1124    *
1125    *   * If an OpenGL context is requested, the requested version is
1126    *     greater than 3.2, and the value for attribute
1127    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1128    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1129    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1130    *     one of these bits set; or if the implementation does not support
1131    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1132    */
1133    case __DRI_CTX_ERROR_BAD_API:
1134    case __DRI_CTX_ERROR_BAD_VERSION:
1135    case __DRI_CTX_ERROR_BAD_FLAG:
1136       egl_error = EGL_BAD_MATCH;
1137       break;
1138
1139   /* From the EGL_KHR_create_context spec, section "Errors":
1140    *
1141    *   * If an attribute name or attribute value in <attrib_list> is not
1142    *     recognized (including unrecognized bits in bitmask attributes),
1143    *     then an EGL_BAD_ATTRIBUTE error is generated."
1144    */
1145    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1146    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1147       egl_error = EGL_BAD_ATTRIBUTE;
1148       break;
1149
1150    default:
1151       assert(0);
1152       egl_error = EGL_BAD_MATCH;
1153       break;
1154    }
1155
1156    _eglError(egl_error, "dri2_create_context");
1157 }
1158
1159 static bool
1160 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1161                           struct dri2_egl_display *dri2_dpy,
1162                           uint32_t *ctx_attribs,
1163                           unsigned *num_attribs)
1164 {
1165    int pos = 0;
1166
1167    assert(*num_attribs >= NUM_ATTRIBS);
1168
1169    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1170    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1171    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1172    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1173
1174    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1175       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1176        * extension, don't even try to send it the robust-access flag.
1177        * It may explode.  Instead, generate the required EGL error here.
1178        */
1179       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1180             && !dri2_dpy->robustness) {
1181          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1182          return false;
1183       }
1184
1185       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1186       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1187          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1188    }
1189
1190    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1191       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1192        * extension, don't even try to send it a reset strategy.  It may
1193        * explode.  Instead, generate the required EGL error here.
1194        */
1195       if (!dri2_dpy->robustness) {
1196          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1197          return false;
1198       }
1199
1200       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1201       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1202    }
1203
1204    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1205       unsigned val;
1206
1207       switch (dri2_ctx->base.ContextPriority) {
1208       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1209          val = __DRI_CTX_PRIORITY_HIGH;
1210          break;
1211       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1212          val = __DRI_CTX_PRIORITY_MEDIUM;
1213          break;
1214       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1215          val = __DRI_CTX_PRIORITY_LOW;
1216          break;
1217       default:
1218          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1219          return false;
1220       }
1221
1222       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1223       ctx_attribs[pos++] = val;
1224    }
1225
1226    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1227       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1228       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1229    }
1230
1231    *num_attribs = pos;
1232
1233    return true;
1234 }
1235
1236 /**
1237  * Called via eglCreateContext(), drv->API.CreateContext().
1238  */
1239 static _EGLContext *
1240 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1241                     _EGLContext *share_list, const EGLint *attrib_list)
1242 {
1243    struct dri2_egl_context *dri2_ctx;
1244    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1245    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1246    __DRIcontext *shared =
1247       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1248    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1249    const __DRIconfig *dri_config;
1250    int api;
1251    unsigned error;
1252    unsigned num_attribs = NUM_ATTRIBS;
1253    uint32_t ctx_attribs[NUM_ATTRIBS];
1254
1255    (void) drv;
1256
1257    dri2_ctx = malloc(sizeof *dri2_ctx);
1258    if (!dri2_ctx) {
1259       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1260       return NULL;
1261    }
1262
1263    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1264       goto cleanup;
1265
1266    /* The EGL_EXT_create_context_robustness spec says:
1267     *
1268     *    "Add to the eglCreateContext context creation errors: [...]
1269     *
1270     *     * If the reset notification behavior of <share_context> and the
1271     *       newly created context are different then an EGL_BAD_MATCH error is
1272     *       generated."
1273     */
1274    if (share_list && share_list->ResetNotificationStrategy !=
1275                      dri2_ctx->base.ResetNotificationStrategy) {
1276       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1277       goto cleanup;
1278    }
1279
1280    /* The EGL_KHR_create_context_no_error spec says:
1281     *
1282     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1283     *    used to create <share_context> does not match the value of
1284     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1285     */
1286    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1287       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1288       goto cleanup;
1289    }
1290
1291    switch (dri2_ctx->base.ClientAPI) {
1292    case EGL_OPENGL_ES_API:
1293       switch (dri2_ctx->base.ClientMajorVersion) {
1294       case 1:
1295          api = __DRI_API_GLES;
1296          break;
1297       case 2:
1298          api = __DRI_API_GLES2;
1299          break;
1300       case 3:
1301          api = __DRI_API_GLES3;
1302          break;
1303       default:
1304          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1305          free(dri2_ctx);
1306          return NULL;
1307       }
1308       break;
1309    case EGL_OPENGL_API:
1310       if ((dri2_ctx->base.ClientMajorVersion >= 4
1311            || (dri2_ctx->base.ClientMajorVersion == 3
1312                && dri2_ctx->base.ClientMinorVersion >= 2))
1313           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1314          api = __DRI_API_OPENGL_CORE;
1315       else
1316          api = __DRI_API_OPENGL;
1317       break;
1318    default:
1319       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1320       free(dri2_ctx);
1321       return NULL;
1322    }
1323
1324    if (conf != NULL) {
1325       /* The config chosen here isn't necessarily
1326        * used for surfaces later.
1327        * A pixmap surface will use the single config.
1328        * This opportunity depends on disabling the
1329        * doubleBufferMode check in
1330        * src/mesa/main/context.c:check_compatible()
1331        */
1332       if (dri2_config->dri_config[1][0])
1333          dri_config = dri2_config->dri_config[1][0];
1334       else
1335          dri_config = dri2_config->dri_config[0][0];
1336
1337       /* EGL_WINDOW_BIT is set only when there is a double-buffered dri_config.
1338        * This makes sure the back buffer will always be used.
1339        */
1340       if (conf->SurfaceType & EGL_WINDOW_BIT)
1341          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
1342    }
1343    else
1344       dri_config = NULL;
1345
1346    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1347                                   &num_attribs))
1348       goto cleanup;
1349
1350    if (dri2_dpy->image_driver) {
1351       dri2_ctx->dri_context =
1352          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1353                                                       api,
1354                                                       dri_config,
1355                                                       shared,
1356                                                       num_attribs / 2,
1357                                                       ctx_attribs,
1358                                                       & error,
1359                                                       dri2_ctx);
1360       dri2_create_context_attribs_error(error);
1361    } else if (dri2_dpy->dri2) {
1362       if (dri2_dpy->dri2->base.version >= 3) {
1363          dri2_ctx->dri_context =
1364             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1365                                                  api,
1366                                                  dri_config,
1367                                                  shared,
1368                                                  num_attribs / 2,
1369                                                  ctx_attribs,
1370                                                  & error,
1371                                                  dri2_ctx);
1372          dri2_create_context_attribs_error(error);
1373       } else {
1374          dri2_ctx->dri_context =
1375             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1376                                                    api,
1377                                                    dri_config,
1378                                                    shared,
1379                                                    dri2_ctx);
1380       }
1381    } else {
1382       assert(dri2_dpy->swrast);
1383       if (dri2_dpy->swrast->base.version >= 3) {
1384          dri2_ctx->dri_context =
1385             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1386                                                    api,
1387                                                    dri_config,
1388                                                    shared,
1389                                                    num_attribs / 2,
1390                                                    ctx_attribs,
1391                                                    & error,
1392                                                    dri2_ctx);
1393          dri2_create_context_attribs_error(error);
1394       } else {
1395          dri2_ctx->dri_context =
1396             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1397                                                      api,
1398                                                      dri_config,
1399                                                      shared,
1400                                                      dri2_ctx);
1401       }
1402    }
1403
1404    if (!dri2_ctx->dri_context)
1405       goto cleanup;
1406
1407    return &dri2_ctx->base;
1408
1409  cleanup:
1410    free(dri2_ctx);
1411    return NULL;
1412 }
1413
1414 /**
1415  * Called via eglDestroyContext(), drv->API.DestroyContext().
1416  */
1417 static EGLBoolean
1418 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1419 {
1420    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1421    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1422
1423    if (_eglPutContext(ctx)) {
1424       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1425       free(dri2_ctx);
1426    }
1427
1428    return EGL_TRUE;
1429 }
1430
1431 EGLBoolean
1432 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
1433         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1434 {
1435    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1436    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1437
1438    dri2_surf->out_fence_fd = -1;
1439    dri2_surf->enable_out_fence = false;
1440    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1441        dri2_dpy->fence->get_capabilities &&
1442        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1443         __DRI_FENCE_CAP_NATIVE_FD)) {
1444       dri2_surf->enable_out_fence = enable_out_fence;
1445    }
1446
1447    return _eglInitSurface(surf, dpy, type, conf, attrib_list);
1448 }
1449
1450 static void
1451 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1452 {
1453    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1454
1455    if (dri2_surf->out_fence_fd >= 0)
1456       close(dri2_surf->out_fence_fd);
1457
1458    dri2_surf->out_fence_fd = fence_fd;
1459 }
1460
1461 void
1462 dri2_fini_surface(_EGLSurface *surf)
1463 {
1464    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1465
1466    dri2_surface_set_out_fence_fd(surf, -1);
1467    dri2_surf->enable_out_fence = false;
1468 }
1469
1470 static EGLBoolean
1471 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1472 {
1473    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1474
1475    if (!_eglPutSurface(surf))
1476       return EGL_TRUE;
1477
1478    return dri2_dpy->vtbl->destroy_surface(drv, dpy, surf);
1479 }
1480
1481 static void
1482 dri2_surf_update_fence_fd(_EGLContext *ctx,
1483                           _EGLDisplay *dpy, _EGLSurface *surf)
1484 {
1485    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1486    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1487    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1488    int fence_fd = -1;
1489    void *fence;
1490
1491    if (!dri2_surf->enable_out_fence)
1492       return;
1493
1494    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1495    if (fence) {
1496       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1497                                                fence);
1498       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1499    }
1500    dri2_surface_set_out_fence_fd(surf, fence_fd);
1501 }
1502
1503 /**
1504  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1505  */
1506 static EGLBoolean
1507 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1508                   _EGLSurface *rsurf, _EGLContext *ctx)
1509 {
1510    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1511    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1512    _EGLContext *old_ctx;
1513    _EGLSurface *old_dsurf, *old_rsurf;
1514    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1515    __DRIdrawable *ddraw, *rdraw;
1516    __DRIcontext *cctx;
1517    EGLBoolean unbind;
1518
1519    if (!dri2_dpy)
1520       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1521
1522    /* make new bindings */
1523    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1524       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1525       return EGL_FALSE;
1526    }
1527
1528    /* flush before context switch */
1529    if (old_ctx)
1530       dri2_gl_flush();
1531
1532    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1533    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1534    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1535
1536    if (old_ctx) {
1537       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1538
1539       if (old_dsurf)
1540          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1541       dri2_dpy->core->unbindContext(old_cctx);
1542    }
1543
1544    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1545
1546    if (unbind || dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1547       dri2_destroy_surface(drv, disp, old_dsurf);
1548       dri2_destroy_surface(drv, disp, old_rsurf);
1549
1550       if (!unbind)
1551          dri2_dpy->ref_count++;
1552       if (old_ctx) {
1553          EGLDisplay old_disp = _eglGetDisplayHandle(old_ctx->Resource.Display);
1554          dri2_destroy_context(drv, disp, old_ctx);
1555          dri2_display_release(old_disp);
1556       }
1557
1558       return EGL_TRUE;
1559    } else {
1560       /* undo the previous _eglBindContext */
1561       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1562       assert(&dri2_ctx->base == ctx &&
1563              tmp_dsurf == dsurf &&
1564              tmp_rsurf == rsurf);
1565
1566       _eglPutSurface(dsurf);
1567       _eglPutSurface(rsurf);
1568       _eglPutContext(ctx);
1569
1570       _eglPutSurface(old_dsurf);
1571       _eglPutSurface(old_rsurf);
1572       _eglPutContext(old_ctx);
1573
1574       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1575        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1576        * as EGL_SUCCESS.
1577        */
1578       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1579    }
1580 }
1581
1582 __DRIdrawable *
1583 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1584 {
1585    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1586
1587    return dri2_surf->dri_drawable;
1588 }
1589
1590 /*
1591  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1592  */
1593 static _EGLProc
1594 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1595 {
1596    return _glapi_get_proc_address(procname);
1597 }
1598
1599 static _EGLSurface*
1600 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1601                            _EGLConfig *conf, void *native_window,
1602                            const EGLint *attrib_list)
1603 {
1604    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1605    return dri2_dpy->vtbl->create_window_surface(drv, dpy, conf, native_window,
1606                                                 attrib_list);
1607 }
1608
1609 static _EGLSurface*
1610 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1611                            _EGLConfig *conf, void *native_pixmap,
1612                            const EGLint *attrib_list)
1613 {
1614    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1615    return dri2_dpy->vtbl->create_pixmap_surface(drv, dpy, conf, native_pixmap,
1616                                                 attrib_list);
1617 }
1618
1619 static _EGLSurface*
1620 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1621                            _EGLConfig *conf, const EGLint *attrib_list)
1622 {
1623    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1624    return dri2_dpy->vtbl->create_pbuffer_surface(drv, dpy, conf, attrib_list);
1625 }
1626
1627 static EGLBoolean
1628 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1629                    EGLint interval)
1630 {
1631    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1632    if (!dri2_dpy->vtbl->swap_interval)
1633       return EGL_TRUE;
1634    return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval);
1635 }
1636
1637 /**
1638  * Asks the client API to flush any rendering to the drawable so that we can
1639  * do our swapbuffers.
1640  */
1641 void
1642 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1643 {
1644    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1645    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1646
1647    if (dri2_dpy->flush) {
1648       if (dri2_dpy->flush->base.version >= 4) {
1649          /* We know there's a current context because:
1650           *
1651           *     "If surface is not bound to the calling thread’s current
1652           *      context, an EGL_BAD_SURFACE error is generated."
1653          */
1654          _EGLContext *ctx = _eglGetCurrentContext();
1655          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1656
1657          /* From the EGL 1.4 spec (page 52):
1658           *
1659           *     "The contents of ancillary buffers are always undefined
1660           *      after calling eglSwapBuffers."
1661           */
1662          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1663                                            dri_drawable,
1664                                            __DRI2_FLUSH_DRAWABLE |
1665                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1666                                            __DRI2_THROTTLE_SWAPBUFFER);
1667       } else {
1668          dri2_dpy->flush->flush(dri_drawable);
1669       }
1670    }
1671 }
1672
1673 static EGLBoolean
1674 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1675 {
1676    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1677    _EGLContext *ctx = _eglGetCurrentContext();
1678
1679    if (ctx && surf)
1680       dri2_surf_update_fence_fd(ctx, dpy, surf);
1681    return dri2_dpy->vtbl->swap_buffers(drv, dpy, surf);
1682 }
1683
1684 static EGLBoolean
1685 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *dpy,
1686                               _EGLSurface *surf,
1687                               const EGLint *rects, EGLint n_rects)
1688 {
1689    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1690    _EGLContext *ctx = _eglGetCurrentContext();
1691
1692    if (ctx && surf)
1693       dri2_surf_update_fence_fd(ctx, dpy, surf);
1694    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, dpy, surf,
1695                                                    rects, n_rects);
1696 }
1697
1698 static EGLBoolean
1699 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1700                          EGLint numRects, const EGLint *rects)
1701 {
1702    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1703    return dri2_dpy->vtbl->swap_buffers_region(drv, dpy, surf, numRects, rects);
1704 }
1705
1706 static EGLBoolean
1707 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1708                        EGLint *rects, EGLint n_rects)
1709 {
1710    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1711    return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
1712 }
1713
1714 static EGLBoolean
1715 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1716                      EGLint x, EGLint y, EGLint width, EGLint height)
1717 {
1718    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1719    return dri2_dpy->vtbl->post_sub_buffer(drv, dpy, surf, x, y, width, height);
1720 }
1721
1722 static EGLBoolean
1723 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1724                   void *native_pixmap_target)
1725 {
1726    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1727    return dri2_dpy->vtbl->copy_buffers(drv, dpy, surf, native_pixmap_target);
1728 }
1729
1730 static EGLint
1731 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1732 {
1733    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1734    return dri2_dpy->vtbl->query_buffer_age(drv, dpy, surf);
1735 }
1736
1737 static EGLBoolean
1738 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1739 {
1740    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1741    _EGLSurface *surf = ctx->DrawSurface;
1742    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1743
1744    (void) drv;
1745
1746    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1747     * we need to copy fake to real here.*/
1748
1749    if (dri2_dpy->flush != NULL)
1750       dri2_dpy->flush->flush(dri_drawable);
1751
1752    return EGL_TRUE;
1753 }
1754
1755 static EGLBoolean
1756 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1757 {
1758    (void) drv;
1759    (void) disp;
1760
1761    if (engine != EGL_CORE_NATIVE_ENGINE)
1762       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1763    /* glXWaitX(); */
1764
1765    return EGL_TRUE;
1766 }
1767
1768 static EGLBoolean
1769 dri2_bind_tex_image(_EGLDriver *drv,
1770                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1771 {
1772    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1773    struct dri2_egl_context *dri2_ctx;
1774    _EGLContext *ctx;
1775    GLint format, target;
1776    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1777
1778    ctx = _eglGetCurrentContext();
1779    dri2_ctx = dri2_egl_context(ctx);
1780
1781    if (!_eglBindTexImage(drv, disp, surf, buffer))
1782       return EGL_FALSE;
1783
1784    switch (surf->TextureFormat) {
1785    case EGL_TEXTURE_RGB:
1786       format = __DRI_TEXTURE_FORMAT_RGB;
1787       break;
1788    case EGL_TEXTURE_RGBA:
1789       format = __DRI_TEXTURE_FORMAT_RGBA;
1790       break;
1791    default:
1792       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1793       format = __DRI_TEXTURE_FORMAT_RGBA;
1794    }
1795
1796    switch (surf->TextureTarget) {
1797    case EGL_TEXTURE_2D:
1798       target = GL_TEXTURE_2D;
1799       break;
1800    default:
1801       target = GL_TEXTURE_2D;
1802       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1803    }
1804
1805    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1806                                        target, format,
1807                                        dri_drawable);
1808
1809    return EGL_TRUE;
1810 }
1811
1812 static EGLBoolean
1813 dri2_release_tex_image(_EGLDriver *drv,
1814                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1815 {
1816    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1817    struct dri2_egl_context *dri2_ctx;
1818    _EGLContext *ctx;
1819    GLint  target;
1820    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1821
1822    ctx = _eglGetCurrentContext();
1823    dri2_ctx = dri2_egl_context(ctx);
1824
1825    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1826       return EGL_FALSE;
1827
1828    switch (surf->TextureTarget) {
1829    case EGL_TEXTURE_2D:
1830       target = GL_TEXTURE_2D;
1831       break;
1832    default:
1833       assert(0);
1834    }
1835
1836    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1837        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1838       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1839                                              target, dri_drawable);
1840    }
1841
1842    return EGL_TRUE;
1843 }
1844
1845 static _EGLImage*
1846 dri2_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
1847                   EGLenum target, EGLClientBuffer buffer,
1848                   const EGLint *attr_list)
1849 {
1850    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1851    return dri2_dpy->vtbl->create_image(drv, dpy, ctx, target, buffer,
1852                                        attr_list);
1853 }
1854
1855 static _EGLImage *
1856 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1857 {
1858    struct dri2_egl_image *dri2_img;
1859
1860    if (dri_image == NULL) {
1861       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1862       return NULL;
1863    }
1864
1865    dri2_img = malloc(sizeof *dri2_img);
1866    if (!dri2_img) {
1867       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1868       return NULL;
1869    }
1870
1871    _eglInitImage(&dri2_img->base, disp);
1872
1873    dri2_img->dri_image = dri_image;
1874
1875    return &dri2_img->base;
1876 }
1877
1878 /**
1879  * Translate a DRI Image extension error code into an EGL error code.
1880  */
1881 static EGLint
1882 egl_error_from_dri_image_error(int dri_error)
1883 {
1884    switch (dri_error) {
1885    case __DRI_IMAGE_ERROR_SUCCESS:
1886       return EGL_SUCCESS;
1887    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1888       return EGL_BAD_ALLOC;
1889    case __DRI_IMAGE_ERROR_BAD_MATCH:
1890       return EGL_BAD_MATCH;
1891    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1892       return EGL_BAD_PARAMETER;
1893    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1894       return EGL_BAD_ACCESS;
1895    default:
1896       assert(0);
1897       return EGL_BAD_ALLOC;
1898    }
1899 }
1900
1901 static _EGLImage *
1902 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1903                                    EGLClientBuffer buffer,
1904                                    const EGLint *attr_list)
1905 {
1906    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1907    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1908    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1909    __DRIimage *dri_image;
1910
1911    if (renderbuffer == 0) {
1912       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1913       return EGL_NO_IMAGE_KHR;
1914    }
1915
1916    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1917       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1918       return EGL_NO_IMAGE_KHR;
1919    }
1920
1921    if (dri2_dpy->image->base.version >= 17 &&
1922        dri2_dpy->image->createImageFromRenderbuffer2) {
1923       unsigned error = ~0;
1924
1925       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1926                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1927
1928       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1929
1930       if (!dri_image) {
1931          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1932          return EGL_NO_IMAGE_KHR;
1933       }
1934    } else {
1935       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1936                dri2_ctx->dri_context, renderbuffer, NULL);
1937       if (!dri_image) {
1938          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1939          return EGL_NO_IMAGE_KHR;
1940       }
1941    }
1942
1943    return dri2_create_image_from_dri(disp, dri_image);
1944 }
1945
1946 #ifdef HAVE_WAYLAND_PLATFORM
1947
1948 /* This structure describes how a wl_buffer maps to one or more
1949  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1950  * offsets and strides of the planes in the buffer.  This table maps a
1951  * wl_drm format code to a description of the planes in the buffer
1952  * that lets us create a __DRIimage for each of the planes. */
1953
1954 static const struct wl_drm_components_descriptor {
1955    uint32_t dri_components;
1956    EGLint components;
1957    int nplanes;
1958 } wl_drm_components[] = {
1959    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1960    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1961    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1962    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1963    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1964 };
1965
1966 static _EGLImage *
1967 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1968                                     EGLClientBuffer _buffer,
1969                                     const EGLint *attr_list)
1970 {
1971    struct wl_drm_buffer *buffer;
1972    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1973    const struct wl_drm_components_descriptor *f;
1974    __DRIimage *dri_image;
1975    _EGLImageAttribs attrs;
1976    int32_t plane;
1977
1978    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1979                                    (struct wl_resource *) _buffer);
1980    if (!buffer)
1981        return NULL;
1982
1983    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1984       return NULL;
1985
1986    plane = attrs.PlaneWL;
1987    f = buffer->driver_format;
1988    if (plane < 0 || plane >= f->nplanes) {
1989       _eglError(EGL_BAD_PARAMETER,
1990                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1991       return NULL;
1992    }
1993
1994    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1995
1996    if (dri_image == NULL) {
1997       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1998       return NULL;
1999    }
2000
2001    return dri2_create_image_from_dri(disp, dri_image);
2002 }
2003 #endif
2004
2005 static EGLBoolean
2006 dri2_get_sync_values_chromium(_EGLDisplay *dpy, _EGLSurface *surf,
2007                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2008                               EGLuint64KHR *sbc)
2009 {
2010    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2011    return dri2_dpy->vtbl->get_sync_values(dpy, surf, ust, msc, sbc);
2012 }
2013
2014 /**
2015  * Set the error code after a call to
2016  * dri2_egl_image::dri_image::createImageFromTexture.
2017  */
2018 static void
2019 dri2_create_image_khr_texture_error(int dri_error)
2020 {
2021    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2022
2023    if (egl_error != EGL_SUCCESS)
2024       _eglError(egl_error, "dri2_create_image_khr_texture");
2025 }
2026
2027 static _EGLImage *
2028 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2029                                    EGLenum target,
2030                                    EGLClientBuffer buffer,
2031                                    const EGLint *attr_list)
2032 {
2033    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2034    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2035    struct dri2_egl_image *dri2_img;
2036    GLuint texture = (GLuint) (uintptr_t) buffer;
2037    _EGLImageAttribs attrs;
2038    GLuint depth;
2039    GLenum gl_target;
2040    unsigned error;
2041
2042    if (texture == 0) {
2043       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2044       return EGL_NO_IMAGE_KHR;
2045    }
2046
2047    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2048       return EGL_NO_IMAGE_KHR;
2049
2050    switch (target) {
2051    case EGL_GL_TEXTURE_2D_KHR:
2052       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2053          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2054          return EGL_NO_IMAGE_KHR;
2055       }
2056       depth = 0;
2057       gl_target = GL_TEXTURE_2D;
2058       break;
2059    case EGL_GL_TEXTURE_3D_KHR:
2060       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2061          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2062          return EGL_NO_IMAGE_KHR;
2063       }
2064
2065       depth = attrs.GLTextureZOffset;
2066       gl_target = GL_TEXTURE_3D;
2067       break;
2068    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2069    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2070    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2071    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2072    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2073    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2074       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2075          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2076          return EGL_NO_IMAGE_KHR;
2077       }
2078
2079       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2080       gl_target = GL_TEXTURE_CUBE_MAP;
2081       break;
2082    default:
2083       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2084       return EGL_NO_IMAGE_KHR;
2085    }
2086
2087    dri2_img = malloc(sizeof *dri2_img);
2088    if (!dri2_img) {
2089       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2090       return EGL_NO_IMAGE_KHR;
2091    }
2092
2093    _eglInitImage(&dri2_img->base, disp);
2094
2095    dri2_img->dri_image =
2096       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2097                                               gl_target,
2098                                               texture,
2099                                               depth,
2100                                               attrs.GLTextureLevel,
2101                                               &error,
2102                                               dri2_img);
2103    dri2_create_image_khr_texture_error(error);
2104
2105    if (!dri2_img->dri_image) {
2106       free(dri2_img);
2107       return EGL_NO_IMAGE_KHR;
2108    }
2109    return &dri2_img->base;
2110 }
2111
2112 static EGLBoolean
2113 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
2114                    EGLint attribute, EGLint *value)
2115 {
2116    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2117    if (!dri2_dpy->vtbl->query_surface)
2118       return _eglQuerySurface(drv, dpy, surf, attribute, value);
2119    return dri2_dpy->vtbl->query_surface(drv, dpy, surf, attribute, value);
2120 }
2121
2122 static struct wl_buffer*
2123 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *dpy,
2124                                       _EGLImage *img)
2125 {
2126    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2127    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, dpy, img);
2128 }
2129
2130 #ifdef HAVE_LIBDRM
2131 static _EGLImage *
2132 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2133                                   EGLClientBuffer buffer, const EGLint *attr_list)
2134 {
2135    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2136    EGLint format, name, pitch;
2137    _EGLImageAttribs attrs;
2138    __DRIimage *dri_image;
2139
2140    name = (EGLint) (uintptr_t) buffer;
2141
2142    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2143       return NULL;
2144
2145    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2146        attrs.DRMBufferStrideMESA <= 0) {
2147       _eglError(EGL_BAD_PARAMETER,
2148                 "bad width, height or stride");
2149       return NULL;
2150    }
2151
2152    switch (attrs.DRMBufferFormatMESA) {
2153    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2154       format = __DRI_IMAGE_FORMAT_ARGB8888;
2155       pitch = attrs.DRMBufferStrideMESA;
2156       break;
2157    default:
2158       _eglError(EGL_BAD_PARAMETER,
2159                 "dri2_create_image_khr: unsupported pixmap depth");
2160       return NULL;
2161    }
2162
2163    dri_image =
2164       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2165                                            attrs.Width,
2166                                            attrs.Height,
2167                                            format,
2168                                            name,
2169                                            pitch,
2170                                            NULL);
2171
2172    return dri2_create_image_from_dri(disp, dri_image);
2173 }
2174
2175 static EGLBoolean
2176 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2177 {
2178    /**
2179      * The spec says:
2180      *
2181      * "Required attributes and their values are as follows:
2182      *
2183      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2184      *
2185      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2186      *    by drm_fourcc.h and used as the pixel_format parameter of the
2187      *    drm_mode_fb_cmd2 ioctl."
2188      *
2189      * and
2190      *
2191      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2192      *    incomplete, EGL_BAD_PARAMETER is generated."
2193      */
2194    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2195        !attrs->DMABufFourCC.IsPresent)
2196       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2197
2198    /**
2199     * Also:
2200     *
2201     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2202     *  specified for a plane's pitch or offset isn't supported by EGL,
2203     *  EGL_BAD_ACCESS is generated."
2204     */
2205    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2206       if (attrs->DMABufPlanePitches[i].IsPresent &&
2207           attrs->DMABufPlanePitches[i].Value <= 0)
2208          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2209    }
2210
2211    /**
2212     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2213     * attribute values may be given.
2214     *
2215     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2216     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2217     */
2218    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2219       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2220           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2221          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2222    }
2223
2224    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2225     * mandate it, we only accept the same modifier across all planes. */
2226    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2227       if (attrs->DMABufPlaneFds[i].IsPresent) {
2228          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2229                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2230              (attrs->DMABufPlaneModifiersLo[0].Value !=
2231                attrs->DMABufPlaneModifiersLo[i].Value) ||
2232              (attrs->DMABufPlaneModifiersHi[0].Value !=
2233                attrs->DMABufPlaneModifiersHi[i].Value))
2234             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2235       }
2236    }
2237
2238    return EGL_TRUE;
2239 }
2240
2241 /* Returns the total number of file descriptors. Zero indicates an error. */
2242 static unsigned
2243 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2244 {
2245    unsigned plane_n;
2246
2247    switch (attrs->DMABufFourCC.Value) {
2248    case DRM_FORMAT_R8:
2249    case DRM_FORMAT_RG88:
2250    case DRM_FORMAT_GR88:
2251    case DRM_FORMAT_R16:
2252    case DRM_FORMAT_GR1616:
2253    case DRM_FORMAT_RGB332:
2254    case DRM_FORMAT_BGR233:
2255    case DRM_FORMAT_XRGB4444:
2256    case DRM_FORMAT_XBGR4444:
2257    case DRM_FORMAT_RGBX4444:
2258    case DRM_FORMAT_BGRX4444:
2259    case DRM_FORMAT_ARGB4444:
2260    case DRM_FORMAT_ABGR4444:
2261    case DRM_FORMAT_RGBA4444:
2262    case DRM_FORMAT_BGRA4444:
2263    case DRM_FORMAT_XRGB1555:
2264    case DRM_FORMAT_XBGR1555:
2265    case DRM_FORMAT_RGBX5551:
2266    case DRM_FORMAT_BGRX5551:
2267    case DRM_FORMAT_ARGB1555:
2268    case DRM_FORMAT_ABGR1555:
2269    case DRM_FORMAT_RGBA5551:
2270    case DRM_FORMAT_BGRA5551:
2271    case DRM_FORMAT_RGB565:
2272    case DRM_FORMAT_BGR565:
2273    case DRM_FORMAT_RGB888:
2274    case DRM_FORMAT_BGR888:
2275    case DRM_FORMAT_XRGB8888:
2276    case DRM_FORMAT_XBGR8888:
2277    case DRM_FORMAT_RGBX8888:
2278    case DRM_FORMAT_BGRX8888:
2279    case DRM_FORMAT_ARGB8888:
2280    case DRM_FORMAT_ABGR8888:
2281    case DRM_FORMAT_RGBA8888:
2282    case DRM_FORMAT_BGRA8888:
2283    case DRM_FORMAT_XRGB2101010:
2284    case DRM_FORMAT_XBGR2101010:
2285    case DRM_FORMAT_RGBX1010102:
2286    case DRM_FORMAT_BGRX1010102:
2287    case DRM_FORMAT_ARGB2101010:
2288    case DRM_FORMAT_ABGR2101010:
2289    case DRM_FORMAT_RGBA1010102:
2290    case DRM_FORMAT_BGRA1010102:
2291    case DRM_FORMAT_YUYV:
2292    case DRM_FORMAT_YVYU:
2293    case DRM_FORMAT_UYVY:
2294    case DRM_FORMAT_VYUY:
2295       plane_n = 1;
2296       break;
2297    case DRM_FORMAT_NV12:
2298    case DRM_FORMAT_NV21:
2299    case DRM_FORMAT_NV16:
2300    case DRM_FORMAT_NV61:
2301       plane_n = 2;
2302       break;
2303    case DRM_FORMAT_YUV410:
2304    case DRM_FORMAT_YVU410:
2305    case DRM_FORMAT_YUV411:
2306    case DRM_FORMAT_YVU411:
2307    case DRM_FORMAT_YUV420:
2308    case DRM_FORMAT_YVU420:
2309    case DRM_FORMAT_YUV422:
2310    case DRM_FORMAT_YVU422:
2311    case DRM_FORMAT_YUV444:
2312    case DRM_FORMAT_YVU444:
2313       plane_n = 3;
2314       break;
2315    default:
2316       _eglError(EGL_BAD_ATTRIBUTE, "invalid format");
2317       return 0;
2318    }
2319
2320    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2321       /**
2322        * The modifiers extension spec says:
2323        *
2324        * "Modifiers may modify any attribute of a buffer import, including
2325        *  but not limited to adding extra planes to a format which
2326        *  otherwise does not have those planes. As an example, a modifier
2327        *  may add a plane for an external compression buffer to a
2328        *  single-plane format. The exact meaning and effect of any
2329        *  modifier is canonically defined by drm_fourcc.h, not as part of
2330        *  this extension."
2331        */
2332       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2333           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2334          plane_n = i + 1;
2335       }
2336    }
2337
2338    /**
2339      * The spec says:
2340      *
2341      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2342      *    incomplete, EGL_BAD_PARAMETER is generated."
2343      */
2344    for (unsigned i = 0; i < plane_n; ++i) {
2345       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2346           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2347           !attrs->DMABufPlanePitches[i].IsPresent) {
2348          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2349          return 0;
2350       }
2351    }
2352
2353    /**
2354     * The spec also says:
2355     *
2356     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2357     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2358     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2359     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2360     */
2361    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2362       if (attrs->DMABufPlaneFds[i].IsPresent ||
2363           attrs->DMABufPlaneOffsets[i].IsPresent ||
2364           attrs->DMABufPlanePitches[i].IsPresent) {
2365          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2366          return 0;
2367       }
2368    }
2369
2370    return plane_n;
2371 }
2372
2373 static EGLBoolean
2374 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2375                             EGLint max, EGLint *formats, EGLint *count)
2376 {
2377    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2378    if (max < 0 || (max > 0 && formats == NULL))
2379       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2380
2381    if (dri2_dpy->image->base.version < 15 ||
2382        dri2_dpy->image->queryDmaBufFormats == NULL)
2383       return EGL_FALSE;
2384
2385    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2386                                             formats, count))
2387       return EGL_FALSE;
2388
2389    return EGL_TRUE;
2390 }
2391
2392 static EGLBoolean
2393 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2394                              EGLint max, EGLuint64KHR *modifiers,
2395                              EGLBoolean *external_only, EGLint *count)
2396 {
2397    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2398
2399    if (max < 0)
2400       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2401
2402    if (max > 0 && modifiers == NULL)
2403       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2404
2405    if (dri2_dpy->image->base.version < 15 ||
2406        dri2_dpy->image->queryDmaBufModifiers == NULL)
2407       return EGL_FALSE;
2408
2409    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2410                                              max, modifiers,
2411                                              (unsigned int *) external_only,
2412                                              count) == false)
2413       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2414
2415    return EGL_TRUE;
2416 }
2417
2418 /**
2419  * The spec says:
2420  *
2421  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2422  *  EGL will take a reference to the dma_buf(s) which it will release at any
2423  *  time while the EGLDisplay is initialized. It is the responsibility of the
2424  *  application to close the dma_buf file descriptors."
2425  *
2426  * Therefore we must never close or otherwise modify the file descriptors.
2427  */
2428 _EGLImage *
2429 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2430                           EGLClientBuffer buffer, const EGLint *attr_list)
2431 {
2432    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2433    _EGLImage *res;
2434    _EGLImageAttribs attrs;
2435    __DRIimage *dri_image;
2436    unsigned num_fds;
2437    int fds[DMA_BUF_MAX_PLANES];
2438    int pitches[DMA_BUF_MAX_PLANES];
2439    int offsets[DMA_BUF_MAX_PLANES];
2440    uint64_t modifier;
2441    bool has_modifier = false;
2442    unsigned error;
2443
2444    /**
2445     * The spec says:
2446     *
2447     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2448     *     error EGL_BAD_PARAMETER is generated."
2449     */
2450    if (buffer != NULL) {
2451       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2452       return NULL;
2453    }
2454
2455    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2456       return NULL;
2457
2458    if (!dri2_check_dma_buf_attribs(&attrs))
2459       return NULL;
2460
2461    num_fds = dri2_check_dma_buf_format(&attrs);
2462    if (!num_fds)
2463       return NULL;
2464
2465    for (unsigned i = 0; i < num_fds; ++i) {
2466       fds[i] = attrs.DMABufPlaneFds[i].Value;
2467       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2468       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2469    }
2470
2471    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2472     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2473     * attrs.DMABufPlaneModifiersHi[0] */
2474    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2475       modifier = (uint64_t) attrs.DMABufPlaneModifiersHi[0].Value << 32;
2476       modifier |= (uint64_t) (attrs.DMABufPlaneModifiersLo[0].Value & 0xffffffff);
2477       has_modifier = true;
2478    }
2479
2480    if (has_modifier) {
2481       if (dri2_dpy->image->base.version < 15 ||
2482           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2483          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2484          return EGL_NO_IMAGE_KHR;
2485       }
2486       dri_image =
2487          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2488             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2489             modifier, fds, num_fds, pitches, offsets,
2490             attrs.DMABufYuvColorSpaceHint.Value,
2491             attrs.DMABufSampleRangeHint.Value,
2492             attrs.DMABufChromaHorizontalSiting.Value,
2493             attrs.DMABufChromaVerticalSiting.Value,
2494             &error,
2495             NULL);
2496    }
2497    else {
2498       dri_image =
2499          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2500             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2501             fds, num_fds, pitches, offsets,
2502             attrs.DMABufYuvColorSpaceHint.Value,
2503             attrs.DMABufSampleRangeHint.Value,
2504             attrs.DMABufChromaHorizontalSiting.Value,
2505             attrs.DMABufChromaVerticalSiting.Value,
2506             &error,
2507             NULL);
2508    }
2509    dri2_create_image_khr_texture_error(error);
2510
2511    if (!dri_image)
2512       return EGL_NO_IMAGE_KHR;
2513
2514    res = dri2_create_image_from_dri(disp, dri_image);
2515
2516    return res;
2517 }
2518 static _EGLImage *
2519 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2520                            const EGLint *attr_list)
2521 {
2522    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2523    struct dri2_egl_image *dri2_img;
2524    _EGLImageAttribs attrs;
2525    unsigned int dri_use, valid_mask;
2526    int format;
2527
2528    (void) drv;
2529
2530    if (!attr_list) {
2531       _eglError(EGL_BAD_PARAMETER, __func__);
2532       return EGL_NO_IMAGE_KHR;
2533    }
2534
2535    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2536       return EGL_NO_IMAGE_KHR;
2537
2538    if (attrs.Width <= 0 || attrs.Height <= 0) {
2539       _eglError(EGL_BAD_PARAMETER, __func__);
2540       return EGL_NO_IMAGE_KHR;
2541    }
2542
2543    switch (attrs.DRMBufferFormatMESA) {
2544    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2545       format = __DRI_IMAGE_FORMAT_ARGB8888;
2546       break;
2547    default:
2548       _eglError(EGL_BAD_PARAMETER, __func__);
2549       return EGL_NO_IMAGE_KHR;
2550    }
2551
2552    valid_mask =
2553       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2554       EGL_DRM_BUFFER_USE_SHARE_MESA |
2555       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2556    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2557       _eglError(EGL_BAD_PARAMETER, __func__);
2558       return EGL_NO_IMAGE_KHR;
2559    }
2560
2561    dri_use = 0;
2562    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2563       dri_use |= __DRI_IMAGE_USE_SHARE;
2564    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2565       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2566    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2567       dri_use |= __DRI_IMAGE_USE_CURSOR;
2568
2569    dri2_img = malloc(sizeof *dri2_img);
2570    if (!dri2_img) {
2571       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2572       return EGL_NO_IMAGE_KHR;
2573    }
2574
2575    _eglInitImage(&dri2_img->base, disp);
2576
2577    dri2_img->dri_image =
2578       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2579                                    attrs.Width, attrs.Height,
2580                                    format, dri_use, dri2_img);
2581    if (dri2_img->dri_image == NULL) {
2582       free(dri2_img);
2583        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2584       return EGL_NO_IMAGE_KHR;
2585    }
2586
2587    return &dri2_img->base;
2588 }
2589
2590 static EGLBoolean
2591 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2592                           EGLint *name, EGLint *handle, EGLint *stride)
2593 {
2594    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2595    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2596
2597    (void) drv;
2598
2599    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2600                                             __DRI_IMAGE_ATTRIB_NAME, name))
2601       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2602
2603    if (handle)
2604       dri2_dpy->image->queryImage(dri2_img->dri_image,
2605                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2606
2607    if (stride)
2608       dri2_dpy->image->queryImage(dri2_img->dri_image,
2609                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2610
2611    return EGL_TRUE;
2612 }
2613
2614 static EGLBoolean
2615 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2616                                      _EGLImage *img,
2617                                      EGLint *fourcc, EGLint *nplanes,
2618                                      EGLuint64KHR *modifiers)
2619 {
2620    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2621    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2622
2623    (void) drv;
2624
2625
2626    if (nplanes)
2627       dri2_dpy->image->queryImage(dri2_img->dri_image,
2628                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2629    if (fourcc)
2630       dri2_dpy->image->queryImage(dri2_img->dri_image,
2631                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2632
2633    if (modifiers)
2634       *modifiers = 0;
2635
2636    return EGL_TRUE;
2637 }
2638
2639 static EGLBoolean
2640 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2641                                int *fds, EGLint *strides, EGLint *offsets)
2642 {
2643    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2644    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2645
2646    (void) drv;
2647
2648    /* rework later to provide multiple fds/strides/offsets */
2649    if (fds)
2650       dri2_dpy->image->queryImage(dri2_img->dri_image,
2651                                   __DRI_IMAGE_ATTRIB_FD, fds);
2652
2653    if (strides)
2654       dri2_dpy->image->queryImage(dri2_img->dri_image,
2655                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2656
2657    if (offsets) {
2658       int img_offset;
2659       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2660                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2661       if (ret)
2662          offsets[0] = img_offset;
2663       else
2664          offsets[0] = 0;
2665    }
2666
2667    return EGL_TRUE;
2668 }
2669
2670 #endif
2671
2672 _EGLImage *
2673 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2674                       _EGLContext *ctx, EGLenum target,
2675                       EGLClientBuffer buffer, const EGLint *attr_list)
2676 {
2677    (void) drv;
2678
2679    switch (target) {
2680    case EGL_GL_TEXTURE_2D_KHR:
2681    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2682    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2683    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2684    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2685    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2686    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2687    case EGL_GL_TEXTURE_3D_KHR:
2688       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2689    case EGL_GL_RENDERBUFFER_KHR:
2690       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2691 #ifdef HAVE_LIBDRM
2692    case EGL_DRM_BUFFER_MESA:
2693       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2694    case EGL_LINUX_DMA_BUF_EXT:
2695       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2696 #endif
2697 #ifdef HAVE_WAYLAND_PLATFORM
2698    case EGL_WAYLAND_BUFFER_WL:
2699       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2700 #endif
2701    default:
2702       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2703       return EGL_NO_IMAGE_KHR;
2704    }
2705 }
2706
2707 static EGLBoolean
2708 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2709 {
2710    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2711    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2712
2713    (void) drv;
2714
2715    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2716    free(dri2_img);
2717
2718    return EGL_TRUE;
2719 }
2720
2721 #ifdef HAVE_WAYLAND_PLATFORM
2722
2723 static void
2724 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2725                          struct wl_drm_buffer *buffer)
2726 {
2727    _EGLDisplay *disp = user_data;
2728    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2729    __DRIimage *img;
2730    int dri_components = 0;
2731
2732    if (fd == -1)
2733       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2734                                                   buffer->width,
2735                                                   buffer->height,
2736                                                   buffer->format,
2737                                                   (int*)&name, 1,
2738                                                   buffer->stride,
2739                                                   buffer->offset,
2740                                                   NULL);
2741    else
2742       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2743                                                 buffer->width,
2744                                                 buffer->height,
2745                                                 buffer->format,
2746                                                 &fd, 1,
2747                                                 buffer->stride,
2748                                                 buffer->offset,
2749                                                 NULL);
2750
2751    if (img == NULL)
2752       return;
2753
2754    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2755
2756    buffer->driver_format = NULL;
2757    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2758       if (wl_drm_components[i].dri_components == dri_components)
2759          buffer->driver_format = &wl_drm_components[i];
2760
2761    if (buffer->driver_format == NULL)
2762       dri2_dpy->image->destroyImage(img);
2763    else
2764       buffer->driver_buffer = img;
2765 }
2766
2767 static void
2768 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2769 {
2770    _EGLDisplay *disp = user_data;
2771    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2772
2773    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2774 }
2775
2776 static EGLBoolean
2777 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2778                              struct wl_display *wl_dpy)
2779 {
2780    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2781    const struct wayland_drm_callbacks wl_drm_callbacks = {
2782       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2783       .reference_buffer = dri2_wl_reference_buffer,
2784       .release_buffer = dri2_wl_release_buffer
2785    };
2786    int flags = 0;
2787    uint64_t cap;
2788
2789    (void) drv;
2790
2791    if (dri2_dpy->wl_server_drm)
2792            return EGL_FALSE;
2793
2794    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2795        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2796        dri2_dpy->image->base.version >= 7 &&
2797        dri2_dpy->image->createImageFromFds != NULL)
2798       flags |= WAYLAND_DRM_PRIME;
2799
2800    dri2_dpy->wl_server_drm =
2801            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2802                             &wl_drm_callbacks, disp, flags);
2803
2804    if (!dri2_dpy->wl_server_drm)
2805            return EGL_FALSE;
2806
2807 #ifdef HAVE_DRM_PLATFORM
2808    /* We have to share the wl_drm instance with gbm, so gbm can convert
2809     * wl_buffers to gbm bos. */
2810    if (dri2_dpy->gbm_dri)
2811       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2812 #endif
2813
2814    return EGL_TRUE;
2815 }
2816
2817 static EGLBoolean
2818 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2819                                struct wl_display *wl_dpy)
2820 {
2821    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2822
2823    (void) drv;
2824
2825    if (!dri2_dpy->wl_server_drm)
2826            return EGL_FALSE;
2827
2828    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2829    dri2_dpy->wl_server_drm = NULL;
2830
2831    return EGL_TRUE;
2832 }
2833
2834 static EGLBoolean
2835 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2836                              struct wl_resource *buffer_resource,
2837                              EGLint attribute, EGLint *value)
2838 {
2839    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2840    struct wl_drm_buffer *buffer;
2841    const struct wl_drm_components_descriptor *format;
2842
2843    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2844    if (!buffer)
2845       return EGL_FALSE;
2846
2847    format = buffer->driver_format;
2848    switch (attribute) {
2849    case EGL_TEXTURE_FORMAT:
2850       *value = format->components;
2851       return EGL_TRUE;
2852    case EGL_WIDTH:
2853       *value = buffer->width;
2854       return EGL_TRUE;
2855    case EGL_HEIGHT:
2856       *value = buffer->height;
2857       return EGL_TRUE;
2858    }
2859
2860    return EGL_FALSE;
2861 }
2862 #endif
2863
2864 static void
2865 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2866 {
2867    p_atomic_inc(&sync->refcount);
2868 }
2869
2870 static void
2871 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2872                     struct dri2_egl_sync *dri2_sync)
2873 {
2874    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2875       switch (dri2_sync->base.Type) {
2876       case EGL_SYNC_REUSABLE_KHR:
2877          cnd_destroy(&dri2_sync->cond);
2878          break;
2879       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2880          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2881             close(dri2_sync->base.SyncFd);
2882          break;
2883       default:
2884          break;
2885       }
2886
2887       if (dri2_sync->fence)
2888          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2889
2890       free(dri2_sync);
2891    }
2892 }
2893
2894 static _EGLSync *
2895 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
2896                  EGLenum type, const EGLAttrib *attrib_list)
2897 {
2898    _EGLContext *ctx = _eglGetCurrentContext();
2899    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2900    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2901    struct dri2_egl_sync *dri2_sync;
2902    EGLint ret;
2903    pthread_condattr_t attr;
2904
2905    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2906    if (!dri2_sync) {
2907       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2908       return NULL;
2909    }
2910
2911    if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
2912       free(dri2_sync);
2913       return NULL;
2914    }
2915
2916    switch (type) {
2917    case EGL_SYNC_FENCE_KHR:
2918       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2919       if (!dri2_sync->fence) {
2920          /* Why did it fail? DRI doesn't return an error code, so we emit
2921           * a generic EGL error that doesn't communicate user error.
2922           */
2923          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2924          free(dri2_sync);
2925          return NULL;
2926       }
2927       break;
2928
2929    case EGL_SYNC_CL_EVENT_KHR:
2930       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2931                                  dri2_dpy->dri_screen,
2932                                  dri2_sync->base.CLEvent);
2933       /* this can only happen if the cl_event passed in is invalid. */
2934       if (!dri2_sync->fence) {
2935          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2936          free(dri2_sync);
2937          return NULL;
2938       }
2939
2940       /* the initial status must be "signaled" if the cl_event is signaled */
2941       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2942                                             dri2_sync->fence, 0, 0))
2943          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2944       break;
2945
2946    case EGL_SYNC_REUSABLE_KHR:
2947       /* intialize attr */
2948       ret = pthread_condattr_init(&attr);
2949
2950       if (ret) {
2951          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2952          free(dri2_sync);
2953          return NULL;
2954       }
2955
2956       /* change clock attribute to CLOCK_MONOTONIC */
2957       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2958
2959       if (ret) {
2960          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2961          free(dri2_sync);
2962          return NULL;
2963       }
2964
2965       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2966
2967       if (ret) {
2968          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2969          free(dri2_sync);
2970          return NULL;
2971       }
2972
2973       /* initial status of reusable sync must be "unsignaled" */
2974       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2975       break;
2976
2977    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2978       if (dri2_dpy->fence->create_fence_fd) {
2979          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2980                                     dri2_ctx->dri_context,
2981                                     dri2_sync->base.SyncFd);
2982       }
2983       if (!dri2_sync->fence) {
2984          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2985          free(dri2_sync);
2986          return NULL;
2987       }
2988       break;
2989    }
2990
2991    p_atomic_set(&dri2_sync->refcount, 1);
2992    return &dri2_sync->base;
2993 }
2994
2995 static EGLBoolean
2996 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
2997 {
2998    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2999    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3000    EGLint ret = EGL_TRUE;
3001    EGLint err;
3002
3003    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3004     * then unlock all threads possibly blocked by the reusable sync before
3005     * destroying it.
3006     */
3007    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3008        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3009       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3010       /* unblock all threads currently blocked by sync */
3011       err = cnd_broadcast(&dri2_sync->cond);
3012
3013       if (err) {
3014          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3015          ret = EGL_FALSE;
3016       }
3017    }
3018
3019    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3020
3021    return ret;
3022 }
3023
3024 static EGLint
3025 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3026 {
3027    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3028    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3029
3030    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3031
3032    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3033       /* try to retrieve the actual native fence fd.. if rendering is
3034        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3035        */
3036       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3037                                                    dri2_sync->fence);
3038    }
3039
3040    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3041       /* if native fence fd still not created, return an error: */
3042       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3043       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3044    }
3045
3046    return dup(sync->SyncFd);
3047 }
3048
3049 static EGLint
3050 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3051                       EGLint flags, EGLTime timeout)
3052 {
3053    _EGLContext *ctx = _eglGetCurrentContext();
3054    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3055    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3056    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3057    unsigned wait_flags = 0;
3058
3059    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3060
3061    /* The EGL_KHR_fence_sync spec states:
3062     *
3063     *    "If no context is current for the bound API,
3064     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3065     */
3066    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3067       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3068
3069    /* the sync object should take a reference while waiting */
3070    dri2_egl_ref_sync(dri2_sync);
3071
3072    switch (sync->Type) {
3073    case EGL_SYNC_FENCE_KHR:
3074    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3075    case EGL_SYNC_CL_EVENT_KHR:
3076       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3077                                          dri2_sync->fence, wait_flags,
3078                                          timeout))
3079          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3080       else
3081          ret = EGL_TIMEOUT_EXPIRED_KHR;
3082       break;
3083
3084    case EGL_SYNC_REUSABLE_KHR:
3085       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3086           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3087          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3088          dri2_gl_flush();
3089       }
3090
3091       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3092       if (timeout == EGL_FOREVER_KHR) {
3093          mtx_lock(&dri2_sync->mutex);
3094          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3095          mtx_unlock(&dri2_sync->mutex);
3096       } else {
3097          /* if reusable sync has not been yet signaled */
3098          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3099             /* timespecs for cnd_timedwait */
3100             struct timespec current;
3101             struct timespec expire;
3102
3103             /* We override the clock to monotonic when creating the condition
3104              * variable. */
3105             clock_gettime(CLOCK_MONOTONIC, &current);
3106
3107             /* calculating when to expire */
3108             expire.tv_nsec = timeout % 1000000000L;
3109             expire.tv_sec = timeout / 1000000000L;
3110
3111             expire.tv_nsec += current.tv_nsec;
3112             expire.tv_sec += current.tv_sec;
3113
3114             /* expire.nsec now is a number between 0 and 1999999998 */
3115             if (expire.tv_nsec > 999999999L) {
3116                expire.tv_sec++;
3117                expire.tv_nsec -= 1000000000L;
3118             }
3119
3120             mtx_lock(&dri2_sync->mutex);
3121             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3122             mtx_unlock(&dri2_sync->mutex);
3123
3124             if (ret == thrd_busy) {
3125                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3126                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3127                } else {
3128                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3129                   ret = EGL_FALSE;
3130                }
3131             }
3132          }
3133       }
3134       break;
3135   }
3136   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3137
3138   return ret;
3139 }
3140
3141 static EGLBoolean
3142 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3143                       EGLenum mode)
3144 {
3145    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3146    EGLint ret;
3147
3148    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3149       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3150
3151    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3152       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3153
3154    dri2_sync->base.SyncStatus = mode;
3155
3156    if (mode == EGL_SIGNALED_KHR) {
3157       ret = cnd_broadcast(&dri2_sync->cond);
3158
3159       /* fail to broadcast */
3160       if (ret)
3161          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3162    }
3163
3164    return EGL_TRUE;
3165 }
3166
3167 static EGLint
3168 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3169 {
3170    _EGLContext *ctx = _eglGetCurrentContext();
3171    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3172    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3173    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3174
3175    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3176                                      dri2_sync->fence, 0);
3177    return EGL_TRUE;
3178 }
3179
3180 static int
3181 dri2_interop_query_device_info(_EGLDisplay *dpy, _EGLContext *ctx,
3182                                struct mesa_glinterop_device_info *out)
3183 {
3184    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3185    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3186
3187    if (!dri2_dpy->interop)
3188       return MESA_GLINTEROP_UNSUPPORTED;
3189
3190    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3191 }
3192
3193 static int
3194 dri2_interop_export_object(_EGLDisplay *dpy, _EGLContext *ctx,
3195                            struct mesa_glinterop_export_in *in,
3196                            struct mesa_glinterop_export_out *out)
3197 {
3198    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3199    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3200
3201    if (!dri2_dpy->interop)
3202       return MESA_GLINTEROP_UNSUPPORTED;
3203
3204    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3205 }
3206
3207 /**
3208  * This is the main entrypoint into the driver, called by libEGL.
3209  * Create a new _EGLDriver object and init its dispatch table.
3210  */
3211 _EGLDriver *
3212 _eglBuiltInDriver(void)
3213 {
3214    _EGLDriver *dri2_drv = calloc(1, sizeof *dri2_drv);
3215    if (!dri2_drv)
3216       return NULL;
3217
3218    _eglInitDriverFallbacks(dri2_drv);
3219    dri2_drv->API.Initialize = dri2_initialize;
3220    dri2_drv->API.Terminate = dri2_terminate;
3221    dri2_drv->API.CreateContext = dri2_create_context;
3222    dri2_drv->API.DestroyContext = dri2_destroy_context;
3223    dri2_drv->API.MakeCurrent = dri2_make_current;
3224    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3225    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3226    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3227    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3228    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3229    dri2_drv->API.WaitClient = dri2_wait_client;
3230    dri2_drv->API.WaitNative = dri2_wait_native;
3231    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3232    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3233    dri2_drv->API.SwapInterval = dri2_swap_interval;
3234    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3235    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3236    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3237    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3238    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3239    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3240    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3241    dri2_drv->API.CreateImageKHR = dri2_create_image;
3242    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3243    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3244    dri2_drv->API.QuerySurface = dri2_query_surface;
3245 #ifdef HAVE_LIBDRM
3246    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3247    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3248    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3249    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3250    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3251    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3252 #endif
3253 #ifdef HAVE_WAYLAND_PLATFORM
3254    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3255    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3256    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3257 #endif
3258    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3259    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3260    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3261    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3262    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3263    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3264    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3265    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3266    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3267
3268    dri2_drv->Name = "DRI2";
3269
3270    return dri2_drv;
3271 }