src/egl/drivers/dri2/egl_dri2.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdbool.h>
  29 #include <stdint.h>
  30 #include <stdbool.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdio.h>
  34 #include <limits.h>
  35 #include <dlfcn.h>
  36 #include <fcntl.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <c11/threads.h>
  40 #include <time.h>
  41 #ifdef HAVE_LIBDRM
  42 #include <xf86drm.h>
  43 #include <drm_fourcc.h>
  44 #endif
  45 #include <GL/gl.h>
  46 #include <GL/internal/dri_interface.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49
  50 #ifdef HAVE_WAYLAND_PLATFORM
  51 #include <wayland-client.h>
  52 #include "wayland-drm.h"
  53 #include "wayland-drm-client-protocol.h"
  54 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  55 #endif
  56
  57 #ifdef HAVE_X11_PLATFORM
  58 #include "X11/Xlibint.h"
  59 #endif
  60
  61 #include "egldefines.h"
  62 #include "egl_dri2.h"
  63 #include "GL/mesa_glinterop.h"
  64 #include "loader/loader.h"
  65 #include "util/u_atomic.h"
  66 #include "util/u_vector.h"
  67 #include "mapi/glapi/glapi.h"
  68
  69 #define NUM_ATTRIBS 12
  70
  71 static void
  72 dri_set_background_context(void *loaderPrivate)
  73 {
  74    _EGLContext *ctx = _eglGetCurrentContext();
  75    _EGLThreadInfo *t = _eglGetCurrentThread();
  76
  77    _eglBindContextToThread(ctx, t);
  78 }
  79
  80 static void
  81 dri2_gl_flush()
  82 {
  83    static void (*glFlush)(void);
  84    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
  85
  86    mtx_lock(&glFlushMutex);
  87    if (!glFlush)
  88       glFlush = _glapi_get_proc_address("glFlush");
  89    mtx_unlock(&glFlushMutex);
  90
  91    /* if glFlush is not available things are horribly broken */
  92    if (!glFlush) {
  93       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
  94       return;
  95    }
  96
  97    glFlush();
  98 }
  99
 100 static GLboolean
 101 dri_is_thread_safe(void *loaderPrivate)
 102 {
 103    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 104    _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 105
 106 #ifdef HAVE_X11_PLATFORM
 107    Display *xdpy = (Display*)display->PlatformDisplay;
 108
 109    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 110     * platform
 111     *
 112     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 113     * It wll be NULL if XInitThreads wasn't called.
 114     */
 115    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 116       return false;
 117 #endif
 118
 119 #ifdef HAVE_WAYLAND_PLATFORM
 120    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 121       return true;
 122 #endif
 123
 124    return true;
 125 }
 126
 127 const __DRIbackgroundCallableExtension background_callable_extension = {
 128    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 129
 130    .setBackgroundContext = dri_set_background_context,
 131    .isThreadSafe         = dri_is_thread_safe,
 132 };
 133
 134 const __DRIuseInvalidateExtension use_invalidate = {
 135    .base = { __DRI_USE_INVALIDATE, 1 }
 136 };
 137
 138 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 139    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 140    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 141    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,
 142    [__DRI_ATTRIB_GREEN_SIZE]            = EGL_GREEN_SIZE,
 143    [__DRI_ATTRIB_BLUE_SIZE]             = EGL_BLUE_SIZE,
 144    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 145    [__DRI_ATTRIB_ALPHA_SIZE]            = EGL_ALPHA_SIZE,
 146    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 147    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 148    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 149    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 150    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 151    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 152    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 153    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 154    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 155    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 156 };
 157
 158 const __DRIconfig *
 159 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 160                     EGLenum colorspace)
 161 {
 162    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 163    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 164
 165    return conf->dri_config[double_buffer][srgb];
 166 }
 167
 168 static EGLBoolean
 169 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 170 {
 171    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 172       return EGL_FALSE;
 173
 174    if (!_eglMatchConfig(conf, criteria))
 175       return EGL_FALSE;
 176
 177    return EGL_TRUE;
 178 }
 179
 180 struct dri2_egl_config *
 181 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 182                 EGLint surface_type, const EGLint *attr_list,
 183                 const unsigned int *rgba_masks)
 184 {
 185    struct dri2_egl_config *conf;
 186    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 187    _EGLConfig base;
 188    unsigned int attrib, value, double_buffer;
 189    bool srgb = false;
 190    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 191    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 192    _EGLConfig *matching_config;
 193    EGLint num_configs = 0;
 194    EGLint config_id;
 195
 196    _eglInitConfig(&base, disp, id);
 197
 198    double_buffer = 0;
 199    bind_to_texture_rgb = 0;
 200    bind_to_texture_rgba = 0;
 201
 202    for (int i = 0; dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib,
 203                                                      &value); ++i) {
 204       switch (attrib) {
 205       case __DRI_ATTRIB_RENDER_TYPE:
 206          if (value & __DRI_ATTRIB_RGBA_BIT)
 207             value = EGL_RGB_BUFFER;
 208          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 209             value = EGL_LUMINANCE_BUFFER;
 210          else
 211             return NULL;
 212          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 213          break;
 214
 215       case __DRI_ATTRIB_CONFIG_CAVEAT:
 216          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 217             value = EGL_NON_CONFORMANT_CONFIG;
 218          else if (value & __DRI_ATTRIB_SLOW_BIT)
 219             value = EGL_SLOW_CONFIG;
 220          else
 221             value = EGL_NONE;
 222          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 223          break;
 224
 225       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 226          bind_to_texture_rgb = value;
 227          break;
 228
 229       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 230          bind_to_texture_rgba = value;
 231          break;
 232
 233       case __DRI_ATTRIB_DOUBLE_BUFFER:
 234          double_buffer = value;
 235          break;
 236
 237       case __DRI_ATTRIB_RED_MASK:
 238          dri_masks[0] = value;
 239          break;
 240
 241       case __DRI_ATTRIB_GREEN_MASK:
 242          dri_masks[1] = value;
 243          break;
 244
 245       case __DRI_ATTRIB_BLUE_MASK:
 246          dri_masks[2] = value;
 247          break;
 248
 249       case __DRI_ATTRIB_ALPHA_MASK:
 250          dri_masks[3] = value;
 251          break;
 252
 253       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 254       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 255       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 256       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 257          /* Don't expose visuals with the accumulation buffer. */
 258          if (value > 0)
 259             return NULL;
 260          break;
 261
 262       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 263          srgb = value != 0;
 264          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 265             return NULL;
 266          break;
 267
 268       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 269          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 270                           _EGL_MAX_PBUFFER_WIDTH);
 271          break;
 272       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 273          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 274                           _EGL_MAX_PBUFFER_HEIGHT);
 275          break;
 276       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
 277          if (disp->Extensions.KHR_mutable_render_buffer)
 278             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
 279          break;
 280       default:
 281          key = dri2_to_egl_attribute_map[attrib];
 282          if (key != 0)
 283             _eglSetConfigKey(&base, key, value);
 284          break;
 285       }
 286    }
 287
 288    if (attr_list)
 289       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 290          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 291
 292    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 293       return NULL;
 294
 295    base.NativeRenderable = EGL_TRUE;
 296
 297    base.SurfaceType = surface_type;
 298    if (surface_type & (EGL_PBUFFER_BIT |
 299        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 300       base.BindToTextureRGB = bind_to_texture_rgb;
 301       if (base.AlphaSize > 0)
 302          base.BindToTextureRGBA = bind_to_texture_rgba;
 303    }
 304
 305    base.RenderableType = disp->ClientAPIs;
 306    base.Conformant = disp->ClientAPIs;
 307
 308    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 309    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 310
 311    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 312       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 313       return NULL;
 314    }
 315
 316    config_id = base.ConfigID;
 317    base.ConfigID    = EGL_DONT_CARE;
 318    base.SurfaceType = EGL_DONT_CARE;
 319    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 320                                  (_EGLArrayForEach) dri2_match_config, &base);
 321
 322    if (num_configs == 1) {
 323       conf = (struct dri2_egl_config *) matching_config;
 324
 325       if (!conf->dri_config[double_buffer][srgb])
 326          conf->dri_config[double_buffer][srgb] = dri_config;
 327       else
 328          /* a similar config type is already added (unlikely) => discard */
 329          return NULL;
 330    }
 331    else if (num_configs == 0) {
 332       conf = calloc(1, sizeof *conf);
 333       if (conf == NULL)
 334          return NULL;
 335
 336       conf->dri_config[double_buffer][srgb] = dri_config;
 337
 338       memcpy(&conf->base, &base, sizeof base);
 339       conf->base.SurfaceType = 0;
 340       conf->base.ConfigID = config_id;
 341
 342       _eglLinkConfig(&conf->base);
 343    }
 344    else {
 345       unreachable("duplicates should not be possible");
 346       return NULL;
 347    }
 348
 349    if (double_buffer) {
 350       surface_type &= ~EGL_PIXMAP_BIT;
 351    }
 352
 353    /* No support for pbuffer + MSAA for now.
 354     *
 355     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 356     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 357     */
 358    if (base.Samples) {
 359       surface_type &= ~EGL_PBUFFER_BIT;
 360    }
 361
 362    conf->base.SurfaceType |= surface_type;
 363
 364    return conf;
 365 }
 366
 367 __DRIimage *
 368 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 369 {
 370    _EGLDisplay *disp = data;
 371    struct dri2_egl_image *dri2_img;
 372    _EGLImage *img;
 373
 374    (void) screen;
 375
 376    img = _eglLookupImage(image, disp);
 377    if (img == NULL) {
 378       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 379       return NULL;
 380    }
 381
 382    dri2_img = dri2_egl_image(image);
 383
 384    return dri2_img->dri_image;
 385 }
 386
 387 const __DRIimageLookupExtension image_lookup_extension = {
 388    .base = { __DRI_IMAGE_LOOKUP, 1 },
 389
 390    .lookupEGLImage       = dri2_lookup_egl_image
 391 };
 392
 393 struct dri2_extension_match {
 394    const char *name;
 395    int version;
 396    int offset;
 397 };
 398
 399 static const struct dri2_extension_match dri3_driver_extensions[] = {
 400    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 401    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 402    { NULL, 0, 0 }
 403 };
 404
 405 static const struct dri2_extension_match dri2_driver_extensions[] = {
 406    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 407    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 408    { NULL, 0, 0 }
 409 };
 410
 411 static const struct dri2_extension_match dri2_core_extensions[] = {
 412    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 413    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 414    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 415    { NULL, 0, 0 }
 416 };
 417
 418 static const struct dri2_extension_match swrast_driver_extensions[] = {
 419    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 420    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 421    { NULL, 0, 0 }
 422 };
 423
 424 static const struct dri2_extension_match swrast_core_extensions[] = {
 425    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 426    { NULL, 0, 0 }
 427 };
 428
 429 static const struct dri2_extension_match optional_driver_extensions[] = {
 430    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
 431    { NULL, 0, 0 }
 432 };
 433
 434 static const struct dri2_extension_match optional_core_extensions[] = {
 435    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 436    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 437    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 438    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 439    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 440    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 441    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 442    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 443    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 444    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 445    { NULL, 0, 0 }
 446 };
 447
 448 static EGLBoolean
 449 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 450                      const struct dri2_extension_match *matches,
 451                      const __DRIextension **extensions,
 452                      bool optional)
 453 {
 454    int ret = EGL_TRUE;
 455    void *field;
 456
 457    for (int i = 0; extensions[i]; i++) {
 458       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 459       for (int j = 0; matches[j].name; j++) {
 460          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 461              extensions[i]->version >= matches[j].version) {
 462             field = ((char *) dri2_dpy + matches[j].offset);
 463             *(const __DRIextension **) field = extensions[i];
 464             _eglLog(_EGL_INFO, "found extension %s version %d",
 465                     extensions[i]->name, extensions[i]->version);
 466             break;
 467          }
 468       }
 469    }
 470
 471    for (int j = 0; matches[j].name; j++) {
 472       field = ((char *) dri2_dpy + matches[j].offset);
 473       if (*(const __DRIextension **) field == NULL) {
 474          if (optional) {
 475             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 476                     matches[j].name, matches[j].version);
 477          } else {
 478             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 479                     matches[j].name, matches[j].version);
 480             ret = EGL_FALSE;
 481          }
 482       }
 483    }
 484
 485    return ret;
 486 }
 487
 488 static const __DRIextension **
 489 dri2_open_driver(_EGLDisplay *disp)
 490 {
 491    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 492    static const char *search_path_vars[] = {
 493       "LIBGL_DRIVERS_PATH",
 494       NULL,
 495    };
 496
 497    return loader_open_driver(dri2_dpy->driver_name,
 498                              &dri2_dpy->driver,
 499                              search_path_vars);
 500 }
 501
 502 EGLBoolean
 503 dri2_load_driver_dri3(_EGLDisplay *disp)
 504 {
 505    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 506    const __DRIextension **extensions;
 507
 508    extensions = dri2_open_driver(disp);
 509    if (!extensions)
 510       return EGL_FALSE;
 511
 512    if (!dri2_bind_extensions(dri2_dpy, dri3_driver_extensions, extensions, false)) {
 513       dlclose(dri2_dpy->driver);
 514       return EGL_FALSE;
 515    }
 516    dri2_dpy->driver_extensions = extensions;
 517
 518    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 519
 520    return EGL_TRUE;
 521 }
 522
 523 EGLBoolean
 524 dri2_load_driver(_EGLDisplay *disp)
 525 {
 526    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 527    const __DRIextension **extensions;
 528
 529    extensions = dri2_open_driver(disp);
 530    if (!extensions)
 531       return EGL_FALSE;
 532
 533    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions, false)) {
 534       dlclose(dri2_dpy->driver);
 535       return EGL_FALSE;
 536    }
 537    dri2_dpy->driver_extensions = extensions;
 538
 539    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 540
 541    return EGL_TRUE;
 542 }
 543
 544 EGLBoolean
 545 dri2_load_driver_swrast(_EGLDisplay *disp)
 546 {
 547    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 548    const __DRIextension **extensions;
 549
 550    extensions = dri2_open_driver(disp);
 551    if (!extensions)
 552       return EGL_FALSE;
 553
 554    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions, false)) {
 555       dlclose(dri2_dpy->driver);
 556       return EGL_FALSE;
 557    }
 558    dri2_dpy->driver_extensions = extensions;
 559
 560    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 561
 562    return EGL_TRUE;
 563 }
 564
 565 static unsigned
 566 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 567 {
 568    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 569    unsigned int value = 0;
 570
 571    if (!rendererQuery ||
 572        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 573       return 0;
 574
 575    return value;
 576 }
 577
 578 static const char *
 579 dri2_query_driver_name(_EGLDisplay *disp)
 580 {
 581     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 582     return dri2_dpy->driver_name;
 583 }
 584
 585 static char *
 586 dri2_query_driver_config(_EGLDisplay *disp)
 587 {
 588     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 589     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
 590
 591     if (ext->base.version >= 2)
 592         return ext->getXml(dri2_dpy->driver_name);
 593
 594     return strdup(ext->xml);
 595 }
 596
 597
 598 void
 599 dri2_setup_screen(_EGLDisplay *disp)
 600 {
 601    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 602    unsigned int api_mask;
 603
 604    /*
 605     * EGL 1.5 specification defines the default value to 1. Moreover,
 606     * eglSwapInterval() is required to clamp requested value to the supported
 607     * range. Since the default value is implicitly assumed to be supported,
 608     * use it as both minimum and maximum for the platforms that do not allow
 609     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 610     * override these values already.
 611     */
 612    dri2_dpy->min_swap_interval = 1;
 613    dri2_dpy->max_swap_interval = 1;
 614    dri2_dpy->default_swap_interval = 1;
 615
 616    if (dri2_dpy->image_driver) {
 617       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 618    } else if (dri2_dpy->dri2) {
 619       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 620    } else {
 621       assert(dri2_dpy->swrast);
 622       api_mask = 1 << __DRI_API_OPENGL |
 623                  1 << __DRI_API_GLES |
 624                  1 << __DRI_API_GLES2 |
 625                  1 << __DRI_API_GLES3;
 626    }
 627
 628    disp->ClientAPIs = 0;
 629    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 630       disp->ClientAPIs |= EGL_OPENGL_BIT;
 631    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 632       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 633    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 634       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 635    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 636       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 637
 638    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 639    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 640    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 641
 642    if (dri2_dpy->configOptions) {
 643        disp->Extensions.MESA_query_driver = EGL_TRUE;
 644    }
 645
 646    /* Report back to EGL the bitmask of priorities supported */
 647    disp->Extensions.IMG_context_priority =
 648       dri2_renderer_query_integer(dri2_dpy,
 649                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 650
 651    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 652
 653    if (dri2_renderer_query_integer(dri2_dpy,
 654                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 655       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 656
 657    if (dri2_dpy->image_driver ||
 658        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 659        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 660       disp->Extensions.KHR_create_context = EGL_TRUE;
 661
 662       if (dri2_dpy->robustness)
 663          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 664    }
 665
 666    if (dri2_dpy->no_error)
 667       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 668
 669    if (dri2_dpy->fence) {
 670       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 671       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 672       if (dri2_dpy->fence->get_fence_from_cl_event)
 673          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 674       if (dri2_dpy->fence->base.version >= 2 &&
 675           dri2_dpy->fence->get_capabilities) {
 676          unsigned capabilities =
 677             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 678          disp->Extensions.ANDROID_native_fence_sync =
 679             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 680       }
 681    }
 682
 683    if (dri2_dpy->blob)
 684       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 685
 686    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 687
 688    if (dri2_dpy->image) {
 689       if (dri2_dpy->image->base.version >= 10 &&
 690           dri2_dpy->image->getCapabilities != NULL) {
 691          int capabilities;
 692
 693          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 694          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 695
 696          if (dri2_dpy->image->base.version >= 11)
 697             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 698       } else {
 699          disp->Extensions.MESA_drm_image = EGL_TRUE;
 700          if (dri2_dpy->image->base.version >= 11)
 701             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 702       }
 703
 704       disp->Extensions.KHR_image_base = EGL_TRUE;
 705       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 706       if (dri2_dpy->image->base.version >= 5 &&
 707           dri2_dpy->image->createImageFromTexture) {
 708          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 709          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 710
 711          if (dri2_renderer_query_integer(dri2_dpy,
 712                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 713              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 714       }
 715 #ifdef HAVE_LIBDRM
 716       if (dri2_dpy->image->base.version >= 8 &&
 717           dri2_dpy->image->createImageFromDmaBufs) {
 718          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 719       }
 720       if (dri2_dpy->image->base.version >= 15 &&
 721           dri2_dpy->image->createImageFromDmaBufs2 &&
 722           dri2_dpy->image->queryDmaBufFormats &&
 723           dri2_dpy->image->queryDmaBufModifiers) {
 724          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 725       }
 726 #endif
 727    }
 728
 729    if (dri2_dpy->flush_control)
 730       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 731 }
 732
 733 void
 734 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 735 {
 736    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 737    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 738
 739    /* Allow driconf to override applications.*/
 740    if (dri2_dpy->config)
 741       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 742                                      "vblank_mode", &vblank_mode);
 743    switch (vblank_mode) {
 744    case DRI_CONF_VBLANK_NEVER:
 745       dri2_dpy->min_swap_interval = 0;
 746       dri2_dpy->max_swap_interval = 0;
 747       dri2_dpy->default_swap_interval = 0;
 748       break;
 749    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 750       dri2_dpy->min_swap_interval = 1;
 751       dri2_dpy->max_swap_interval = max_swap_interval;
 752       dri2_dpy->default_swap_interval = 1;
 753       break;
 754    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 755       dri2_dpy->min_swap_interval = 0;
 756       dri2_dpy->max_swap_interval = max_swap_interval;
 757       dri2_dpy->default_swap_interval = 0;
 758       break;
 759    default:
 760    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 761       dri2_dpy->min_swap_interval = 0;
 762       dri2_dpy->max_swap_interval = max_swap_interval;
 763       dri2_dpy->default_swap_interval = 1;
 764       break;
 765    }
 766 }
 767
 768 /* All platforms but DRM call this function to create the screen and populate
 769  * the driver_configs. DRM inherits that information from its display - GBM.
 770  */
 771 EGLBoolean
 772 dri2_create_screen(_EGLDisplay *disp)
 773 {
 774    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 775
 776    if (dri2_dpy->image_driver) {
 777       dri2_dpy->dri_screen =
 778          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 779                                                   dri2_dpy->loader_extensions,
 780                                                   dri2_dpy->driver_extensions,
 781                                                   &dri2_dpy->driver_configs,
 782                                                   disp);
 783    } else if (dri2_dpy->dri2) {
 784       if (dri2_dpy->dri2->base.version >= 4) {
 785          dri2_dpy->dri_screen =
 786             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 787                                              dri2_dpy->loader_extensions,
 788                                              dri2_dpy->driver_extensions,
 789                                              &dri2_dpy->driver_configs, disp);
 790       } else {
 791          dri2_dpy->dri_screen =
 792             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 793                                             dri2_dpy->loader_extensions,
 794                                             &dri2_dpy->driver_configs, disp);
 795       }
 796    } else {
 797       assert(dri2_dpy->swrast);
 798       if (dri2_dpy->swrast->base.version >= 4) {
 799          dri2_dpy->dri_screen =
 800             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 801                                                dri2_dpy->driver_extensions,
 802                                                &dri2_dpy->driver_configs, disp);
 803       } else {
 804          dri2_dpy->dri_screen =
 805             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 806                                               &dri2_dpy->driver_configs, disp);
 807       }
 808    }
 809
 810    if (dri2_dpy->dri_screen == NULL) {
 811       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 812       return EGL_FALSE;
 813    }
 814
 815    dri2_dpy->own_dri_screen = true;
 816    return EGL_TRUE;
 817 }
 818
 819 EGLBoolean
 820 dri2_setup_extensions(_EGLDisplay *disp)
 821 {
 822    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 823    const struct dri2_extension_match *mandatory_core_extensions;
 824    const __DRIextension **extensions;
 825
 826    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 827
 828    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 829       mandatory_core_extensions = dri2_core_extensions;
 830    else
 831       mandatory_core_extensions = swrast_core_extensions;
 832
 833    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 834       return EGL_FALSE;
 835
 836 #ifdef HAVE_DRI3_MODIFIERS
 837    dri2_dpy->multibuffers_available =
 838       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
 839                                             dri2_dpy->dri3_minor_version >= 2)) &&
 840       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
 841                                                dri2_dpy->present_minor_version >= 2)) &&
 842       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
 843 #endif
 844
 845    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 846    return EGL_TRUE;
 847 }
 848
 849 /**
 850  * Called via eglInitialize(), GLX_drv->API.Initialize().
 851  *
 852  * This must be guaranteed to be called exactly once, even if eglInitialize is
 853  * called many times (without a eglTerminate in between).
 854  */
 855 static EGLBoolean
 856 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 857 {
 858    EGLBoolean ret = EGL_FALSE;
 859    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 860
 861    /* In the case where the application calls eglMakeCurrent(context1),
 862     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 863     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 864     * initialized, as we need it to be able to free context1 correctly.
 865     *
 866     * It would probably be safest to forcibly release the display with
 867     * dri2_display_release, to make sure the display is reinitialized correctly.
 868     * However, the EGL spec states that we need to keep a reference to the
 869     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 870     * we would leak context1 as we would be missing the old display connection
 871     * to free it up correctly.
 872     */
 873    if (dri2_dpy) {
 874       dri2_dpy->ref_count++;
 875       return EGL_TRUE;
 876    }
 877
 878    loader_set_logger(_eglLog);
 879
 880    switch (disp->Platform) {
 881    case _EGL_PLATFORM_SURFACELESS:
 882       ret = dri2_initialize_surfaceless(drv, disp);
 883       break;
 884    case _EGL_PLATFORM_X11:
 885       ret = dri2_initialize_x11(drv, disp);
 886       break;
 887    case _EGL_PLATFORM_DRM:
 888       ret = dri2_initialize_drm(drv, disp);
 889       break;
 890    case _EGL_PLATFORM_WAYLAND:
 891       ret = dri2_initialize_wayland(drv, disp);
 892       break;
 893    case _EGL_PLATFORM_ANDROID:
 894       ret = dri2_initialize_android(drv, disp);
 895       break;
 896    default:
 897       unreachable("Callers ensure we cannot get here.");
 898       return EGL_FALSE;
 899    }
 900
 901    if (!ret)
 902       return EGL_FALSE;
 903
 904    dri2_dpy = dri2_egl_display(disp);
 905    dri2_dpy->ref_count++;
 906
 907    return EGL_TRUE;
 908 }
 909
 910 /**
 911  * Decrement display reference count, and free up display if necessary.
 912  */
 913 static void
 914 dri2_display_release(_EGLDisplay *disp)
 915 {
 916    struct dri2_egl_display *dri2_dpy;
 917
 918    if (!disp)
 919       return;
 920
 921    dri2_dpy = dri2_egl_display(disp);
 922
 923    assert(dri2_dpy->ref_count > 0);
 924    dri2_dpy->ref_count--;
 925
 926    if (dri2_dpy->ref_count > 0)
 927       return;
 928
 929    _eglCleanupDisplay(disp);
 930    dri2_display_destroy(disp);
 931 }
 932
 933 void
 934 dri2_display_destroy(_EGLDisplay *disp)
 935 {
 936    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 937
 938    if (dri2_dpy->own_dri_screen) {
 939       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
 940          dri2_dpy->vtbl->close_screen_notify(disp);
 941       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 942    }
 943    if (dri2_dpy->fd >= 0)
 944       close(dri2_dpy->fd);
 945    if (dri2_dpy->driver)
 946       dlclose(dri2_dpy->driver);
 947    free(dri2_dpy->driver_name);
 948
 949 #ifdef HAVE_WAYLAND_PLATFORM
 950    free(dri2_dpy->device_name);
 951 #endif
 952
 953    switch (disp->Platform) {
 954    case _EGL_PLATFORM_X11:
 955       dri2_teardown_x11(dri2_dpy);
 956       break;
 957    case _EGL_PLATFORM_DRM:
 958       dri2_teardown_drm(dri2_dpy);
 959       break;
 960    case _EGL_PLATFORM_WAYLAND:
 961       dri2_teardown_wayland(dri2_dpy);
 962       break;
 963    default:
 964       /* TODO: add teardown for other platforms */
 965       break;
 966    }
 967
 968    /* The drm platform does not create the screen/driver_configs but reuses
 969     * the ones from the gbm device. As such the gbm itself is responsible
 970     * for the cleanup.
 971     */
 972    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
 973       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
 974          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
 975       free(dri2_dpy->driver_configs);
 976    }
 977    free(dri2_dpy);
 978    disp->DriverData = NULL;
 979 }
 980
 981 __DRIbuffer *
 982 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
 983                                     unsigned int att, unsigned int format)
 984 {
 985    struct dri2_egl_display *dri2_dpy =
 986       dri2_egl_display(dri2_surf->base.Resource.Display);
 987
 988    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
 989       return NULL;
 990
 991    if (!dri2_surf->local_buffers[att]) {
 992       dri2_surf->local_buffers[att] =
 993          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
 994                                         dri2_surf->base.Width, dri2_surf->base.Height);
 995    }
 996
 997    return dri2_surf->local_buffers[att];
 998 }
 999
1000 void
1001 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1002 {
1003    struct dri2_egl_display *dri2_dpy =
1004       dri2_egl_display(dri2_surf->base.Resource.Display);
1005
1006    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1007       if (dri2_surf->local_buffers[i]) {
1008          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1009                                        dri2_surf->local_buffers[i]);
1010          dri2_surf->local_buffers[i] = NULL;
1011       }
1012    }
1013 }
1014
1015 /**
1016  * Called via eglTerminate(), drv->API.Terminate().
1017  *
1018  * This must be guaranteed to be called exactly once, even if eglTerminate is
1019  * called many times (without a eglInitialize in between).
1020  */
1021 static EGLBoolean
1022 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1023 {
1024    /* Release all non-current Context/Surfaces. */
1025    _eglReleaseDisplayResources(drv, disp);
1026
1027    dri2_display_release(disp);
1028
1029    return EGL_TRUE;
1030 }
1031
1032 /**
1033  * Set the error code after a call to
1034  * dri2_egl_display::dri2::createContextAttribs.
1035  */
1036 static void
1037 dri2_create_context_attribs_error(int dri_error)
1038 {
1039    EGLint egl_error;
1040
1041    switch (dri_error) {
1042    case __DRI_CTX_ERROR_SUCCESS:
1043       return;
1044
1045    case __DRI_CTX_ERROR_NO_MEMORY:
1046       egl_error = EGL_BAD_ALLOC;
1047       break;
1048
1049   /* From the EGL_KHR_create_context spec, section "Errors":
1050    *
1051    *   * If <config> does not support a client API context compatible
1052    *     with the requested API major and minor version, [...] context flags,
1053    *     and context reset notification behavior (for client API types where
1054    *     these attributes are supported), then an EGL_BAD_MATCH error is
1055    *     generated.
1056    *
1057    *   * If an OpenGL ES context is requested and the values for
1058    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1059    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1060    *     is not defined, than an EGL_BAD_MATCH error is generated.
1061    *
1062    *   * If an OpenGL context is requested, the requested version is
1063    *     greater than 3.2, and the value for attribute
1064    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1065    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1066    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1067    *     one of these bits set; or if the implementation does not support
1068    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1069    */
1070    case __DRI_CTX_ERROR_BAD_API:
1071    case __DRI_CTX_ERROR_BAD_VERSION:
1072    case __DRI_CTX_ERROR_BAD_FLAG:
1073       egl_error = EGL_BAD_MATCH;
1074       break;
1075
1076   /* From the EGL_KHR_create_context spec, section "Errors":
1077    *
1078    *   * If an attribute name or attribute value in <attrib_list> is not
1079    *     recognized (including unrecognized bits in bitmask attributes),
1080    *     then an EGL_BAD_ATTRIBUTE error is generated."
1081    */
1082    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1083    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1084       egl_error = EGL_BAD_ATTRIBUTE;
1085       break;
1086
1087    default:
1088       assert(!"unknown dri_error code");
1089       egl_error = EGL_BAD_MATCH;
1090       break;
1091    }
1092
1093    _eglError(egl_error, "dri2_create_context");
1094 }
1095
1096 static bool
1097 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1098                           struct dri2_egl_display *dri2_dpy,
1099                           uint32_t *ctx_attribs,
1100                           unsigned *num_attribs)
1101 {
1102    int pos = 0;
1103
1104    assert(*num_attribs >= NUM_ATTRIBS);
1105
1106    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1107    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1108    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1109    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1110
1111    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1112       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1113        * extension, don't even try to send it the robust-access flag.
1114        * It may explode.  Instead, generate the required EGL error here.
1115        */
1116       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1117             && !dri2_dpy->robustness) {
1118          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1119          return false;
1120       }
1121
1122       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1123       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1124          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1125    }
1126
1127    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1128       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1129        * extension, don't even try to send it a reset strategy.  It may
1130        * explode.  Instead, generate the required EGL error here.
1131        */
1132       if (!dri2_dpy->robustness) {
1133          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1134          return false;
1135       }
1136
1137       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1138       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1139    }
1140
1141    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1142       unsigned val;
1143
1144       switch (dri2_ctx->base.ContextPriority) {
1145       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1146          val = __DRI_CTX_PRIORITY_HIGH;
1147          break;
1148       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1149          val = __DRI_CTX_PRIORITY_MEDIUM;
1150          break;
1151       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1152          val = __DRI_CTX_PRIORITY_LOW;
1153          break;
1154       default:
1155          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1156          return false;
1157       }
1158
1159       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1160       ctx_attribs[pos++] = val;
1161    }
1162
1163    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1164       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1165       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1166    }
1167
1168    *num_attribs = pos;
1169
1170    return true;
1171 }
1172
1173 /**
1174  * Called via eglCreateContext(), drv->API.CreateContext().
1175  */
1176 static _EGLContext *
1177 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1178                     _EGLContext *share_list, const EGLint *attrib_list)
1179 {
1180    struct dri2_egl_context *dri2_ctx;
1181    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1182    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1183    __DRIcontext *shared =
1184       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1185    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1186    const __DRIconfig *dri_config;
1187    int api;
1188    unsigned error;
1189    unsigned num_attribs = NUM_ATTRIBS;
1190    uint32_t ctx_attribs[NUM_ATTRIBS];
1191
1192    (void) drv;
1193
1194    dri2_ctx = malloc(sizeof *dri2_ctx);
1195    if (!dri2_ctx) {
1196       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1197       return NULL;
1198    }
1199
1200    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1201       goto cleanup;
1202
1203    /* The EGL_EXT_create_context_robustness spec says:
1204     *
1205     *    "Add to the eglCreateContext context creation errors: [...]
1206     *
1207     *     * If the reset notification behavior of <share_context> and the
1208     *       newly created context are different then an EGL_BAD_MATCH error is
1209     *       generated."
1210     */
1211    if (share_list && share_list->ResetNotificationStrategy !=
1212                      dri2_ctx->base.ResetNotificationStrategy) {
1213       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1214       goto cleanup;
1215    }
1216
1217    /* The EGL_KHR_create_context_no_error spec says:
1218     *
1219     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1220     *    used to create <share_context> does not match the value of
1221     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1222     */
1223    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1224       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1225       goto cleanup;
1226    }
1227
1228    switch (dri2_ctx->base.ClientAPI) {
1229    case EGL_OPENGL_ES_API:
1230       switch (dri2_ctx->base.ClientMajorVersion) {
1231       case 1:
1232          api = __DRI_API_GLES;
1233          break;
1234       case 2:
1235          api = __DRI_API_GLES2;
1236          break;
1237       case 3:
1238          api = __DRI_API_GLES3;
1239          break;
1240       default:
1241          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1242          free(dri2_ctx);
1243          return NULL;
1244       }
1245       break;
1246    case EGL_OPENGL_API:
1247       if ((dri2_ctx->base.ClientMajorVersion >= 4
1248            || (dri2_ctx->base.ClientMajorVersion == 3
1249                && dri2_ctx->base.ClientMinorVersion >= 2))
1250           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1251          api = __DRI_API_OPENGL_CORE;
1252       else
1253          api = __DRI_API_OPENGL;
1254       break;
1255    default:
1256       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1257       free(dri2_ctx);
1258       return NULL;
1259    }
1260
1261    if (conf != NULL) {
1262       /* The config chosen here isn't necessarily
1263        * used for surfaces later.
1264        * A pixmap surface will use the single config.
1265        * This opportunity depends on disabling the
1266        * doubleBufferMode check in
1267        * src/mesa/main/context.c:check_compatible()
1268        */
1269       if (dri2_config->dri_config[1][0])
1270          dri_config = dri2_config->dri_config[1][0];
1271       else
1272          dri_config = dri2_config->dri_config[0][0];
1273    }
1274    else
1275       dri_config = NULL;
1276
1277    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1278                                   &num_attribs))
1279       goto cleanup;
1280
1281    if (dri2_dpy->image_driver) {
1282       dri2_ctx->dri_context =
1283          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1284                                                       api,
1285                                                       dri_config,
1286                                                       shared,
1287                                                       num_attribs / 2,
1288                                                       ctx_attribs,
1289                                                       & error,
1290                                                       dri2_ctx);
1291       dri2_create_context_attribs_error(error);
1292    } else if (dri2_dpy->dri2) {
1293       if (dri2_dpy->dri2->base.version >= 3) {
1294          dri2_ctx->dri_context =
1295             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1296                                                  api,
1297                                                  dri_config,
1298                                                  shared,
1299                                                  num_attribs / 2,
1300                                                  ctx_attribs,
1301                                                  & error,
1302                                                  dri2_ctx);
1303          dri2_create_context_attribs_error(error);
1304       } else {
1305          dri2_ctx->dri_context =
1306             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1307                                                    api,
1308                                                    dri_config,
1309                                                    shared,
1310                                                    dri2_ctx);
1311       }
1312    } else {
1313       assert(dri2_dpy->swrast);
1314       if (dri2_dpy->swrast->base.version >= 3) {
1315          dri2_ctx->dri_context =
1316             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1317                                                    api,
1318                                                    dri_config,
1319                                                    shared,
1320                                                    num_attribs / 2,
1321                                                    ctx_attribs,
1322                                                    & error,
1323                                                    dri2_ctx);
1324          dri2_create_context_attribs_error(error);
1325       } else {
1326          dri2_ctx->dri_context =
1327             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1328                                                      api,
1329                                                      dri_config,
1330                                                      shared,
1331                                                      dri2_ctx);
1332       }
1333    }
1334
1335    if (!dri2_ctx->dri_context)
1336       goto cleanup;
1337
1338    return &dri2_ctx->base;
1339
1340  cleanup:
1341    free(dri2_ctx);
1342    return NULL;
1343 }
1344
1345 /**
1346  * Called via eglDestroyContext(), drv->API.DestroyContext().
1347  */
1348 static EGLBoolean
1349 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1350 {
1351    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1352    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1353
1354    if (_eglPutContext(ctx)) {
1355       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1356       free(dri2_ctx);
1357    }
1358
1359    return EGL_TRUE;
1360 }
1361
1362 EGLBoolean
1363 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
1364         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1365 {
1366    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1367    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1368
1369    dri2_surf->out_fence_fd = -1;
1370    dri2_surf->enable_out_fence = false;
1371    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1372        dri2_dpy->fence->get_capabilities &&
1373        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1374         __DRI_FENCE_CAP_NATIVE_FD)) {
1375       dri2_surf->enable_out_fence = enable_out_fence;
1376    }
1377
1378    return _eglInitSurface(surf, dpy, type, conf, attrib_list);
1379 }
1380
1381 static void
1382 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1383 {
1384    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1385
1386    if (dri2_surf->out_fence_fd >= 0)
1387       close(dri2_surf->out_fence_fd);
1388
1389    dri2_surf->out_fence_fd = fence_fd;
1390 }
1391
1392 void
1393 dri2_fini_surface(_EGLSurface *surf)
1394 {
1395    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1396
1397    dri2_surface_set_out_fence_fd(surf, -1);
1398    dri2_surf->enable_out_fence = false;
1399 }
1400
1401 static EGLBoolean
1402 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1403 {
1404    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1405
1406    if (!_eglPutSurface(surf))
1407       return EGL_TRUE;
1408
1409    return dri2_dpy->vtbl->destroy_surface(drv, dpy, surf);
1410 }
1411
1412 static void
1413 dri2_surf_update_fence_fd(_EGLContext *ctx,
1414                           _EGLDisplay *dpy, _EGLSurface *surf)
1415 {
1416    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1417    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1418    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1419    int fence_fd = -1;
1420    void *fence;
1421
1422    if (!dri2_surf->enable_out_fence)
1423       return;
1424
1425    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1426    if (fence) {
1427       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1428                                                fence);
1429       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1430    }
1431    dri2_surface_set_out_fence_fd(surf, fence_fd);
1432 }
1433
1434 /**
1435  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1436  */
1437 static EGLBoolean
1438 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1439                   _EGLSurface *rsurf, _EGLContext *ctx)
1440 {
1441    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1442    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1443    _EGLDisplay *old_disp = NULL;
1444    struct dri2_egl_display *old_dri2_dpy = NULL;
1445    _EGLContext *old_ctx;
1446    _EGLSurface *old_dsurf, *old_rsurf;
1447    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1448    __DRIdrawable *ddraw, *rdraw;
1449    __DRIcontext *cctx;
1450    EGLBoolean unbind;
1451
1452    if (!dri2_dpy)
1453       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1454
1455    /* make new bindings */
1456    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1457       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1458       return EGL_FALSE;
1459    }
1460
1461    if (old_ctx) {
1462       old_disp = old_ctx->Resource.Display;
1463       old_dri2_dpy = dri2_egl_display(old_disp);
1464    }
1465
1466    /* flush before context switch */
1467    if (old_ctx)
1468       dri2_gl_flush();
1469
1470    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1471    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1472    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1473
1474    if (old_ctx) {
1475       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1476
1477       if (old_dsurf)
1478          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1479
1480       /* Disable shared buffer mode */
1481       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1482           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1483          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1484       }
1485
1486       dri2_dpy->core->unbindContext(old_cctx);
1487    }
1488
1489    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1490
1491    if (!unbind && !dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1492       /* undo the previous _eglBindContext */
1493       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1494       assert(&dri2_ctx->base == ctx &&
1495              tmp_dsurf == dsurf &&
1496              tmp_rsurf == rsurf);
1497
1498       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1499           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1500          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1501       }
1502
1503       _eglPutSurface(dsurf);
1504       _eglPutSurface(rsurf);
1505       _eglPutContext(ctx);
1506
1507       _eglPutSurface(old_dsurf);
1508       _eglPutSurface(old_rsurf);
1509       _eglPutContext(old_ctx);
1510
1511       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1512        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1513        * as EGL_SUCCESS.
1514        */
1515       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1516    }
1517
1518    dri2_destroy_surface(drv, disp, old_dsurf);
1519    dri2_destroy_surface(drv, disp, old_rsurf);
1520
1521    if (!unbind)
1522       dri2_dpy->ref_count++;
1523
1524    if (old_ctx) {
1525       dri2_destroy_context(drv, disp, old_ctx);
1526       dri2_display_release(old_disp);
1527    }
1528
1529    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1530        dri2_dpy->vtbl->set_shared_buffer_mode) {
1531       /* Always update the shared buffer mode. This is obviously needed when
1532        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1533        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1534        * case where external non-EGL API may have changed window's shared
1535        * buffer mode since we last saw it.
1536        */
1537       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1538       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1539    }
1540
1541    return EGL_TRUE;
1542 }
1543
1544 __DRIdrawable *
1545 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1546 {
1547    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1548
1549    return dri2_surf->dri_drawable;
1550 }
1551
1552 /*
1553  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1554  */
1555 static _EGLProc
1556 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1557 {
1558    return _glapi_get_proc_address(procname);
1559 }
1560
1561 static _EGLSurface*
1562 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1563                            _EGLConfig *conf, void *native_window,
1564                            const EGLint *attrib_list)
1565 {
1566    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1567    return dri2_dpy->vtbl->create_window_surface(drv, dpy, conf, native_window,
1568                                                 attrib_list);
1569 }
1570
1571 static _EGLSurface*
1572 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1573                            _EGLConfig *conf, void *native_pixmap,
1574                            const EGLint *attrib_list)
1575 {
1576    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1577    return dri2_dpy->vtbl->create_pixmap_surface(drv, dpy, conf, native_pixmap,
1578                                                 attrib_list);
1579 }
1580
1581 static _EGLSurface*
1582 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1583                            _EGLConfig *conf, const EGLint *attrib_list)
1584 {
1585    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1586    return dri2_dpy->vtbl->create_pbuffer_surface(drv, dpy, conf, attrib_list);
1587 }
1588
1589 static EGLBoolean
1590 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1591                    EGLint interval)
1592 {
1593    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1594    if (!dri2_dpy->vtbl->swap_interval)
1595       return EGL_TRUE;
1596    return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval);
1597 }
1598
1599 /**
1600  * Asks the client API to flush any rendering to the drawable so that we can
1601  * do our swapbuffers.
1602  */
1603 void
1604 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1605 {
1606    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1607    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1608
1609    if (dri2_dpy->flush) {
1610       if (dri2_dpy->flush->base.version >= 4) {
1611          /* We know there's a current context because:
1612           *
1613           *     "If surface is not bound to the calling thread’s current
1614           *      context, an EGL_BAD_SURFACE error is generated."
1615          */
1616          _EGLContext *ctx = _eglGetCurrentContext();
1617          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1618
1619          /* From the EGL 1.4 spec (page 52):
1620           *
1621           *     "The contents of ancillary buffers are always undefined
1622           *      after calling eglSwapBuffers."
1623           */
1624          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1625                                            dri_drawable,
1626                                            __DRI2_FLUSH_DRAWABLE |
1627                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1628                                            __DRI2_THROTTLE_SWAPBUFFER);
1629       } else {
1630          dri2_dpy->flush->flush(dri_drawable);
1631       }
1632    }
1633 }
1634
1635 static EGLBoolean
1636 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1637 {
1638    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1639    _EGLContext *ctx = _eglGetCurrentContext();
1640
1641    if (ctx && surf)
1642       dri2_surf_update_fence_fd(ctx, dpy, surf);
1643    return dri2_dpy->vtbl->swap_buffers(drv, dpy, surf);
1644 }
1645
1646 static EGLBoolean
1647 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *dpy,
1648                               _EGLSurface *surf,
1649                               const EGLint *rects, EGLint n_rects)
1650 {
1651    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1652    _EGLContext *ctx = _eglGetCurrentContext();
1653
1654    if (ctx && surf)
1655       dri2_surf_update_fence_fd(ctx, dpy, surf);
1656    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, dpy, surf,
1657                                                    rects, n_rects);
1658 }
1659
1660 static EGLBoolean
1661 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1662                          EGLint numRects, const EGLint *rects)
1663 {
1664    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1665    return dri2_dpy->vtbl->swap_buffers_region(drv, dpy, surf, numRects, rects);
1666 }
1667
1668 static EGLBoolean
1669 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1670                        EGLint *rects, EGLint n_rects)
1671 {
1672    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1673    return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
1674 }
1675
1676 static EGLBoolean
1677 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1678                      EGLint x, EGLint y, EGLint width, EGLint height)
1679 {
1680    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1681    return dri2_dpy->vtbl->post_sub_buffer(drv, dpy, surf, x, y, width, height);
1682 }
1683
1684 static EGLBoolean
1685 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1686                   void *native_pixmap_target)
1687 {
1688    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1689    return dri2_dpy->vtbl->copy_buffers(drv, dpy, surf, native_pixmap_target);
1690 }
1691
1692 static EGLint
1693 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1694 {
1695    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1696    return dri2_dpy->vtbl->query_buffer_age(drv, dpy, surf);
1697 }
1698
1699 static EGLBoolean
1700 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1701 {
1702    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1703    _EGLSurface *surf = ctx->DrawSurface;
1704    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1705
1706    (void) drv;
1707
1708    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1709     * we need to copy fake to real here.*/
1710
1711    if (dri2_dpy->flush != NULL)
1712       dri2_dpy->flush->flush(dri_drawable);
1713
1714    return EGL_TRUE;
1715 }
1716
1717 static EGLBoolean
1718 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1719 {
1720    (void) drv;
1721    (void) disp;
1722
1723    if (engine != EGL_CORE_NATIVE_ENGINE)
1724       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1725    /* glXWaitX(); */
1726
1727    return EGL_TRUE;
1728 }
1729
1730 static EGLBoolean
1731 dri2_bind_tex_image(_EGLDriver *drv,
1732                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1733 {
1734    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1735    struct dri2_egl_context *dri2_ctx;
1736    _EGLContext *ctx;
1737    GLint format, target;
1738    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1739
1740    ctx = _eglGetCurrentContext();
1741    dri2_ctx = dri2_egl_context(ctx);
1742
1743    if (!_eglBindTexImage(drv, disp, surf, buffer))
1744       return EGL_FALSE;
1745
1746    switch (surf->TextureFormat) {
1747    case EGL_TEXTURE_RGB:
1748       format = __DRI_TEXTURE_FORMAT_RGB;
1749       break;
1750    case EGL_TEXTURE_RGBA:
1751       format = __DRI_TEXTURE_FORMAT_RGBA;
1752       break;
1753    default:
1754       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1755       format = __DRI_TEXTURE_FORMAT_RGBA;
1756    }
1757
1758    switch (surf->TextureTarget) {
1759    case EGL_TEXTURE_2D:
1760       target = GL_TEXTURE_2D;
1761       break;
1762    default:
1763       target = GL_TEXTURE_2D;
1764       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1765    }
1766
1767    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1768                                        target, format,
1769                                        dri_drawable);
1770
1771    return EGL_TRUE;
1772 }
1773
1774 static EGLBoolean
1775 dri2_release_tex_image(_EGLDriver *drv,
1776                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1777 {
1778    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1779    struct dri2_egl_context *dri2_ctx;
1780    _EGLContext *ctx;
1781    GLint  target;
1782    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1783
1784    ctx = _eglGetCurrentContext();
1785    dri2_ctx = dri2_egl_context(ctx);
1786
1787    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1788       return EGL_FALSE;
1789
1790    switch (surf->TextureTarget) {
1791    case EGL_TEXTURE_2D:
1792       target = GL_TEXTURE_2D;
1793       break;
1794    default:
1795       assert(!"missing texture target");
1796    }
1797
1798    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1799        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1800       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1801                                              target, dri_drawable);
1802    }
1803
1804    return EGL_TRUE;
1805 }
1806
1807 static _EGLImage*
1808 dri2_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
1809                   EGLenum target, EGLClientBuffer buffer,
1810                   const EGLint *attr_list)
1811 {
1812    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1813    return dri2_dpy->vtbl->create_image(drv, dpy, ctx, target, buffer,
1814                                        attr_list);
1815 }
1816
1817 static _EGLImage *
1818 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1819 {
1820    struct dri2_egl_image *dri2_img;
1821
1822    if (dri_image == NULL) {
1823       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1824       return NULL;
1825    }
1826
1827    dri2_img = malloc(sizeof *dri2_img);
1828    if (!dri2_img) {
1829       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1830       return NULL;
1831    }
1832
1833    _eglInitImage(&dri2_img->base, disp);
1834
1835    dri2_img->dri_image = dri_image;
1836
1837    return &dri2_img->base;
1838 }
1839
1840 /**
1841  * Translate a DRI Image extension error code into an EGL error code.
1842  */
1843 static EGLint
1844 egl_error_from_dri_image_error(int dri_error)
1845 {
1846    switch (dri_error) {
1847    case __DRI_IMAGE_ERROR_SUCCESS:
1848       return EGL_SUCCESS;
1849    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1850       return EGL_BAD_ALLOC;
1851    case __DRI_IMAGE_ERROR_BAD_MATCH:
1852       return EGL_BAD_MATCH;
1853    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1854       return EGL_BAD_PARAMETER;
1855    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1856       return EGL_BAD_ACCESS;
1857    default:
1858       assert(!"unknown dri_error code");
1859       return EGL_BAD_ALLOC;
1860    }
1861 }
1862
1863 static _EGLImage *
1864 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1865                                    EGLClientBuffer buffer,
1866                                    const EGLint *attr_list)
1867 {
1868    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1869    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1870    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1871    __DRIimage *dri_image;
1872
1873    if (renderbuffer == 0) {
1874       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1875       return EGL_NO_IMAGE_KHR;
1876    }
1877
1878    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1879       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1880       return EGL_NO_IMAGE_KHR;
1881    }
1882
1883    if (dri2_dpy->image->base.version >= 17 &&
1884        dri2_dpy->image->createImageFromRenderbuffer2) {
1885       unsigned error = ~0;
1886
1887       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1888                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1889
1890       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1891
1892       if (!dri_image) {
1893          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1894          return EGL_NO_IMAGE_KHR;
1895       }
1896    } else {
1897       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1898                dri2_ctx->dri_context, renderbuffer, NULL);
1899       if (!dri_image) {
1900          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1901          return EGL_NO_IMAGE_KHR;
1902       }
1903    }
1904
1905    return dri2_create_image_from_dri(disp, dri_image);
1906 }
1907
1908 #ifdef HAVE_WAYLAND_PLATFORM
1909
1910 /* This structure describes how a wl_buffer maps to one or more
1911  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1912  * offsets and strides of the planes in the buffer.  This table maps a
1913  * wl_drm format code to a description of the planes in the buffer
1914  * that lets us create a __DRIimage for each of the planes. */
1915
1916 static const struct wl_drm_components_descriptor {
1917    uint32_t dri_components;
1918    EGLint components;
1919    int nplanes;
1920 } wl_drm_components[] = {
1921    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1922    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1923    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1924    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1925    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1926 };
1927
1928 static _EGLImage *
1929 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1930                                     EGLClientBuffer _buffer,
1931                                     const EGLint *attr_list)
1932 {
1933    struct wl_drm_buffer *buffer;
1934    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1935    const struct wl_drm_components_descriptor *f;
1936    __DRIimage *dri_image;
1937    _EGLImageAttribs attrs;
1938    int32_t plane;
1939
1940    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1941                                    (struct wl_resource *) _buffer);
1942    if (!buffer)
1943        return NULL;
1944
1945    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1946       return NULL;
1947
1948    plane = attrs.PlaneWL;
1949    f = buffer->driver_format;
1950    if (plane < 0 || plane >= f->nplanes) {
1951       _eglError(EGL_BAD_PARAMETER,
1952                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1953       return NULL;
1954    }
1955
1956    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1957    if (dri_image == NULL && plane == 0)
1958       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
1959    if (dri_image == NULL) {
1960       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1961       return NULL;
1962    }
1963
1964    return dri2_create_image_from_dri(disp, dri_image);
1965 }
1966 #endif
1967
1968 static EGLBoolean
1969 dri2_get_sync_values_chromium(_EGLDisplay *dpy, _EGLSurface *surf,
1970                               EGLuint64KHR *ust, EGLuint64KHR *msc,
1971                               EGLuint64KHR *sbc)
1972 {
1973    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1974    return dri2_dpy->vtbl->get_sync_values(dpy, surf, ust, msc, sbc);
1975 }
1976
1977 /**
1978  * Set the error code after a call to
1979  * dri2_egl_image::dri_image::createImageFromTexture.
1980  */
1981 static void
1982 dri2_create_image_khr_texture_error(int dri_error)
1983 {
1984    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
1985
1986    if (egl_error != EGL_SUCCESS)
1987       _eglError(egl_error, "dri2_create_image_khr_texture");
1988 }
1989
1990 static _EGLImage *
1991 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
1992                                    EGLenum target,
1993                                    EGLClientBuffer buffer,
1994                                    const EGLint *attr_list)
1995 {
1996    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1997    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1998    struct dri2_egl_image *dri2_img;
1999    GLuint texture = (GLuint) (uintptr_t) buffer;
2000    _EGLImageAttribs attrs;
2001    GLuint depth;
2002    GLenum gl_target;
2003    unsigned error;
2004
2005    if (texture == 0) {
2006       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2007       return EGL_NO_IMAGE_KHR;
2008    }
2009
2010    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2011       return EGL_NO_IMAGE_KHR;
2012
2013    switch (target) {
2014    case EGL_GL_TEXTURE_2D_KHR:
2015       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2016          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2017          return EGL_NO_IMAGE_KHR;
2018       }
2019       depth = 0;
2020       gl_target = GL_TEXTURE_2D;
2021       break;
2022    case EGL_GL_TEXTURE_3D_KHR:
2023       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2024          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2025          return EGL_NO_IMAGE_KHR;
2026       }
2027
2028       depth = attrs.GLTextureZOffset;
2029       gl_target = GL_TEXTURE_3D;
2030       break;
2031    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2032    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2033    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2034    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2035    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2036    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2037       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2038          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2039          return EGL_NO_IMAGE_KHR;
2040       }
2041
2042       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2043       gl_target = GL_TEXTURE_CUBE_MAP;
2044       break;
2045    default:
2046       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2047       return EGL_NO_IMAGE_KHR;
2048    }
2049
2050    dri2_img = malloc(sizeof *dri2_img);
2051    if (!dri2_img) {
2052       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2053       return EGL_NO_IMAGE_KHR;
2054    }
2055
2056    _eglInitImage(&dri2_img->base, disp);
2057
2058    dri2_img->dri_image =
2059       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2060                                               gl_target,
2061                                               texture,
2062                                               depth,
2063                                               attrs.GLTextureLevel,
2064                                               &error,
2065                                               dri2_img);
2066    dri2_create_image_khr_texture_error(error);
2067
2068    if (!dri2_img->dri_image) {
2069       free(dri2_img);
2070       return EGL_NO_IMAGE_KHR;
2071    }
2072    return &dri2_img->base;
2073 }
2074
2075 static EGLBoolean
2076 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
2077                    EGLint attribute, EGLint *value)
2078 {
2079    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2080    if (!dri2_dpy->vtbl->query_surface)
2081       return _eglQuerySurface(drv, dpy, surf, attribute, value);
2082    return dri2_dpy->vtbl->query_surface(drv, dpy, surf, attribute, value);
2083 }
2084
2085 static struct wl_buffer*
2086 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *dpy,
2087                                       _EGLImage *img)
2088 {
2089    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2090    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, dpy, img);
2091 }
2092
2093 #ifdef HAVE_LIBDRM
2094 static _EGLImage *
2095 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2096                                   EGLClientBuffer buffer, const EGLint *attr_list)
2097 {
2098    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2099    EGLint format, name, pitch;
2100    _EGLImageAttribs attrs;
2101    __DRIimage *dri_image;
2102
2103    name = (EGLint) (uintptr_t) buffer;
2104
2105    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2106       return NULL;
2107
2108    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2109        attrs.DRMBufferStrideMESA <= 0) {
2110       _eglError(EGL_BAD_PARAMETER,
2111                 "bad width, height or stride");
2112       return NULL;
2113    }
2114
2115    switch (attrs.DRMBufferFormatMESA) {
2116    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2117       format = __DRI_IMAGE_FORMAT_ARGB8888;
2118       pitch = attrs.DRMBufferStrideMESA;
2119       break;
2120    default:
2121       _eglError(EGL_BAD_PARAMETER,
2122                 "dri2_create_image_khr: unsupported pixmap depth");
2123       return NULL;
2124    }
2125
2126    dri_image =
2127       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2128                                            attrs.Width,
2129                                            attrs.Height,
2130                                            format,
2131                                            name,
2132                                            pitch,
2133                                            NULL);
2134
2135    return dri2_create_image_from_dri(disp, dri_image);
2136 }
2137
2138 static EGLBoolean
2139 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2140 {
2141    /**
2142      * The spec says:
2143      *
2144      * "Required attributes and their values are as follows:
2145      *
2146      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2147      *
2148      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2149      *    by drm_fourcc.h and used as the pixel_format parameter of the
2150      *    drm_mode_fb_cmd2 ioctl."
2151      *
2152      * and
2153      *
2154      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2155      *    incomplete, EGL_BAD_PARAMETER is generated."
2156      */
2157    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2158        !attrs->DMABufFourCC.IsPresent)
2159       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2160
2161    /**
2162     * Also:
2163     *
2164     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2165     *  specified for a plane's pitch or offset isn't supported by EGL,
2166     *  EGL_BAD_ACCESS is generated."
2167     */
2168    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2169       if (attrs->DMABufPlanePitches[i].IsPresent &&
2170           attrs->DMABufPlanePitches[i].Value <= 0)
2171          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2172    }
2173
2174    /**
2175     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2176     * attribute values may be given.
2177     *
2178     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2179     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2180     */
2181    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2182       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2183           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2184          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2185    }
2186
2187    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2188     * mandate it, we only accept the same modifier across all planes. */
2189    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2190       if (attrs->DMABufPlaneFds[i].IsPresent) {
2191          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2192                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2193              (attrs->DMABufPlaneModifiersLo[0].Value !=
2194                attrs->DMABufPlaneModifiersLo[i].Value) ||
2195              (attrs->DMABufPlaneModifiersHi[0].Value !=
2196                attrs->DMABufPlaneModifiersHi[i].Value))
2197             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2198       }
2199    }
2200
2201    return EGL_TRUE;
2202 }
2203
2204 /* Returns the total number of planes for the format or zero if it isn't a
2205  * valid fourcc format.
2206  */
2207 static unsigned
2208 dri2_num_fourcc_format_planes(EGLint format)
2209 {
2210    switch (format) {
2211    case DRM_FORMAT_R8:
2212    case DRM_FORMAT_RG88:
2213    case DRM_FORMAT_GR88:
2214    case DRM_FORMAT_R16:
2215    case DRM_FORMAT_GR1616:
2216    case DRM_FORMAT_RGB332:
2217    case DRM_FORMAT_BGR233:
2218    case DRM_FORMAT_XRGB4444:
2219    case DRM_FORMAT_XBGR4444:
2220    case DRM_FORMAT_RGBX4444:
2221    case DRM_FORMAT_BGRX4444:
2222    case DRM_FORMAT_ARGB4444:
2223    case DRM_FORMAT_ABGR4444:
2224    case DRM_FORMAT_RGBA4444:
2225    case DRM_FORMAT_BGRA4444:
2226    case DRM_FORMAT_XRGB1555:
2227    case DRM_FORMAT_XBGR1555:
2228    case DRM_FORMAT_RGBX5551:
2229    case DRM_FORMAT_BGRX5551:
2230    case DRM_FORMAT_ARGB1555:
2231    case DRM_FORMAT_ABGR1555:
2232    case DRM_FORMAT_RGBA5551:
2233    case DRM_FORMAT_BGRA5551:
2234    case DRM_FORMAT_RGB565:
2235    case DRM_FORMAT_BGR565:
2236    case DRM_FORMAT_RGB888:
2237    case DRM_FORMAT_BGR888:
2238    case DRM_FORMAT_XRGB8888:
2239    case DRM_FORMAT_XBGR8888:
2240    case DRM_FORMAT_RGBX8888:
2241    case DRM_FORMAT_BGRX8888:
2242    case DRM_FORMAT_ARGB8888:
2243    case DRM_FORMAT_ABGR8888:
2244    case DRM_FORMAT_RGBA8888:
2245    case DRM_FORMAT_BGRA8888:
2246    case DRM_FORMAT_XRGB2101010:
2247    case DRM_FORMAT_XBGR2101010:
2248    case DRM_FORMAT_RGBX1010102:
2249    case DRM_FORMAT_BGRX1010102:
2250    case DRM_FORMAT_ARGB2101010:
2251    case DRM_FORMAT_ABGR2101010:
2252    case DRM_FORMAT_RGBA1010102:
2253    case DRM_FORMAT_BGRA1010102:
2254    case DRM_FORMAT_YUYV:
2255    case DRM_FORMAT_YVYU:
2256    case DRM_FORMAT_UYVY:
2257    case DRM_FORMAT_VYUY:
2258    case DRM_FORMAT_AYUV:
2259       return 1;
2260
2261    case DRM_FORMAT_NV12:
2262    case DRM_FORMAT_NV21:
2263    case DRM_FORMAT_NV16:
2264    case DRM_FORMAT_NV61:
2265       return 2;
2266
2267    case DRM_FORMAT_YUV410:
2268    case DRM_FORMAT_YVU410:
2269    case DRM_FORMAT_YUV411:
2270    case DRM_FORMAT_YVU411:
2271    case DRM_FORMAT_YUV420:
2272    case DRM_FORMAT_YVU420:
2273    case DRM_FORMAT_YUV422:
2274    case DRM_FORMAT_YVU422:
2275    case DRM_FORMAT_YUV444:
2276    case DRM_FORMAT_YVU444:
2277       return 3;
2278
2279    default:
2280       return 0;
2281    }
2282 }
2283
2284 /* Returns the total number of file descriptors. Zero indicates an error. */
2285 static unsigned
2286 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2287 {
2288    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2289    if (plane_n == 0) {
2290       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2291       return 0;
2292    }
2293
2294    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2295       /**
2296        * The modifiers extension spec says:
2297        *
2298        * "Modifiers may modify any attribute of a buffer import, including
2299        *  but not limited to adding extra planes to a format which
2300        *  otherwise does not have those planes. As an example, a modifier
2301        *  may add a plane for an external compression buffer to a
2302        *  single-plane format. The exact meaning and effect of any
2303        *  modifier is canonically defined by drm_fourcc.h, not as part of
2304        *  this extension."
2305        */
2306       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2307           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2308          plane_n = i + 1;
2309       }
2310    }
2311
2312    /**
2313      * The spec says:
2314      *
2315      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2316      *    incomplete, EGL_BAD_PARAMETER is generated."
2317      */
2318    for (unsigned i = 0; i < plane_n; ++i) {
2319       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2320           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2321           !attrs->DMABufPlanePitches[i].IsPresent) {
2322          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2323          return 0;
2324       }
2325    }
2326
2327    /**
2328     * The spec also says:
2329     *
2330     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2331     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2332     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2333     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2334     */
2335    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2336       if (attrs->DMABufPlaneFds[i].IsPresent ||
2337           attrs->DMABufPlaneOffsets[i].IsPresent ||
2338           attrs->DMABufPlanePitches[i].IsPresent) {
2339          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2340          return 0;
2341       }
2342    }
2343
2344    return plane_n;
2345 }
2346
2347 static EGLBoolean
2348 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2349                             EGLint max, EGLint *formats, EGLint *count)
2350 {
2351    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2352    if (max < 0 || (max > 0 && formats == NULL))
2353       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2354
2355    if (dri2_dpy->image->base.version < 15 ||
2356        dri2_dpy->image->queryDmaBufFormats == NULL)
2357       return EGL_FALSE;
2358
2359    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2360                                             formats, count))
2361       return EGL_FALSE;
2362
2363    if (max > 0) {
2364       /* Assert that all of the formats returned are actually fourcc formats.
2365        * Some day, if we want the internal interface function to be able to
2366        * return the fake fourcc formats defined in dri_interface.h, we'll have
2367        * to do something more clever here to pair the list down to just real
2368        * fourcc formats so that we don't leak the fake internal ones.
2369        */
2370       for (int i = 0; i < *count; i++) {
2371          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2372       }
2373    }
2374
2375    return EGL_TRUE;
2376 }
2377
2378 static EGLBoolean
2379 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2380                              EGLint max, EGLuint64KHR *modifiers,
2381                              EGLBoolean *external_only, EGLint *count)
2382 {
2383    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2384
2385    if (dri2_num_fourcc_format_planes(format) == 0)
2386       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2387
2388    if (max < 0)
2389       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2390
2391    if (max > 0 && modifiers == NULL)
2392       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2393
2394    if (dri2_dpy->image->base.version < 15 ||
2395        dri2_dpy->image->queryDmaBufModifiers == NULL)
2396       return EGL_FALSE;
2397
2398    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2399                                              max, modifiers,
2400                                              (unsigned int *) external_only,
2401                                              count) == false)
2402       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2403
2404    return EGL_TRUE;
2405 }
2406
2407 /**
2408  * The spec says:
2409  *
2410  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2411  *  EGL will take a reference to the dma_buf(s) which it will release at any
2412  *  time while the EGLDisplay is initialized. It is the responsibility of the
2413  *  application to close the dma_buf file descriptors."
2414  *
2415  * Therefore we must never close or otherwise modify the file descriptors.
2416  */
2417 _EGLImage *
2418 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2419                           EGLClientBuffer buffer, const EGLint *attr_list)
2420 {
2421    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2422    _EGLImage *res;
2423    _EGLImageAttribs attrs;
2424    __DRIimage *dri_image;
2425    unsigned num_fds;
2426    int fds[DMA_BUF_MAX_PLANES];
2427    int pitches[DMA_BUF_MAX_PLANES];
2428    int offsets[DMA_BUF_MAX_PLANES];
2429    uint64_t modifier;
2430    bool has_modifier = false;
2431    unsigned error;
2432
2433    /**
2434     * The spec says:
2435     *
2436     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2437     *     error EGL_BAD_PARAMETER is generated."
2438     */
2439    if (buffer != NULL) {
2440       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2441       return NULL;
2442    }
2443
2444    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2445       return NULL;
2446
2447    if (!dri2_check_dma_buf_attribs(&attrs))
2448       return NULL;
2449
2450    num_fds = dri2_check_dma_buf_format(&attrs);
2451    if (!num_fds)
2452       return NULL;
2453
2454    for (unsigned i = 0; i < num_fds; ++i) {
2455       fds[i] = attrs.DMABufPlaneFds[i].Value;
2456       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2457       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2458    }
2459
2460    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2461     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2462     * attrs.DMABufPlaneModifiersHi[0] */
2463    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2464       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2465                                       attrs.DMABufPlaneModifiersLo[0].Value);
2466       has_modifier = true;
2467    }
2468
2469    if (has_modifier) {
2470       if (dri2_dpy->image->base.version < 15 ||
2471           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2472          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2473          return EGL_NO_IMAGE_KHR;
2474       }
2475       dri_image =
2476          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2477             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2478             modifier, fds, num_fds, pitches, offsets,
2479             attrs.DMABufYuvColorSpaceHint.Value,
2480             attrs.DMABufSampleRangeHint.Value,
2481             attrs.DMABufChromaHorizontalSiting.Value,
2482             attrs.DMABufChromaVerticalSiting.Value,
2483             &error,
2484             NULL);
2485    }
2486    else {
2487       dri_image =
2488          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2489             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2490             fds, num_fds, pitches, offsets,
2491             attrs.DMABufYuvColorSpaceHint.Value,
2492             attrs.DMABufSampleRangeHint.Value,
2493             attrs.DMABufChromaHorizontalSiting.Value,
2494             attrs.DMABufChromaVerticalSiting.Value,
2495             &error,
2496             NULL);
2497    }
2498    dri2_create_image_khr_texture_error(error);
2499
2500    if (!dri_image)
2501       return EGL_NO_IMAGE_KHR;
2502
2503    res = dri2_create_image_from_dri(disp, dri_image);
2504
2505    return res;
2506 }
2507 static _EGLImage *
2508 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2509                            const EGLint *attr_list)
2510 {
2511    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2512    struct dri2_egl_image *dri2_img;
2513    _EGLImageAttribs attrs;
2514    unsigned int dri_use, valid_mask;
2515    int format;
2516
2517    (void) drv;
2518
2519    if (!attr_list) {
2520       _eglError(EGL_BAD_PARAMETER, __func__);
2521       return EGL_NO_IMAGE_KHR;
2522    }
2523
2524    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2525       return EGL_NO_IMAGE_KHR;
2526
2527    if (attrs.Width <= 0 || attrs.Height <= 0) {
2528       _eglError(EGL_BAD_PARAMETER, __func__);
2529       return EGL_NO_IMAGE_KHR;
2530    }
2531
2532    switch (attrs.DRMBufferFormatMESA) {
2533    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2534       format = __DRI_IMAGE_FORMAT_ARGB8888;
2535       break;
2536    default:
2537       _eglError(EGL_BAD_PARAMETER, __func__);
2538       return EGL_NO_IMAGE_KHR;
2539    }
2540
2541    valid_mask =
2542       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2543       EGL_DRM_BUFFER_USE_SHARE_MESA |
2544       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2545    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2546       _eglError(EGL_BAD_PARAMETER, __func__);
2547       return EGL_NO_IMAGE_KHR;
2548    }
2549
2550    dri_use = 0;
2551    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2552       dri_use |= __DRI_IMAGE_USE_SHARE;
2553    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2554       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2555    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2556       dri_use |= __DRI_IMAGE_USE_CURSOR;
2557
2558    dri2_img = malloc(sizeof *dri2_img);
2559    if (!dri2_img) {
2560       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2561       return EGL_NO_IMAGE_KHR;
2562    }
2563
2564    _eglInitImage(&dri2_img->base, disp);
2565
2566    dri2_img->dri_image =
2567       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2568                                    attrs.Width, attrs.Height,
2569                                    format, dri_use, dri2_img);
2570    if (dri2_img->dri_image == NULL) {
2571       free(dri2_img);
2572        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2573       return EGL_NO_IMAGE_KHR;
2574    }
2575
2576    return &dri2_img->base;
2577 }
2578
2579 static EGLBoolean
2580 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2581                           EGLint *name, EGLint *handle, EGLint *stride)
2582 {
2583    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2584    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2585
2586    (void) drv;
2587
2588    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2589                                             __DRI_IMAGE_ATTRIB_NAME, name))
2590       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2591
2592    if (handle)
2593       dri2_dpy->image->queryImage(dri2_img->dri_image,
2594                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2595
2596    if (stride)
2597       dri2_dpy->image->queryImage(dri2_img->dri_image,
2598                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2599
2600    return EGL_TRUE;
2601 }
2602
2603 /**
2604  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
2605
2606  * The spec provides a boolean return for the driver to reject exporting for
2607  * basically any reason, but doesn't specify any particular error cases.  For
2608  * now, we just fail if we don't have a DRM fourcc for the format.
2609  */
2610 static bool
2611 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
2612 {
2613    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2614    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2615    EGLint fourcc;
2616
2617    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
2618                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
2619       return false;
2620    }
2621
2622    return true;
2623 }
2624
2625 static EGLBoolean
2626 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2627                                      _EGLImage *img,
2628                                      EGLint *fourcc, EGLint *nplanes,
2629                                      EGLuint64KHR *modifiers)
2630 {
2631    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2632    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2633
2634    (void) drv;
2635
2636    if (!dri2_can_export_dma_buf_image(disp, img))
2637       return EGL_FALSE;
2638
2639    if (nplanes)
2640       dri2_dpy->image->queryImage(dri2_img->dri_image,
2641                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2642    if (fourcc)
2643       dri2_dpy->image->queryImage(dri2_img->dri_image,
2644                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2645
2646    if (modifiers)
2647       *modifiers = 0;
2648
2649    return EGL_TRUE;
2650 }
2651
2652 static EGLBoolean
2653 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2654                                int *fds, EGLint *strides, EGLint *offsets)
2655 {
2656    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2657    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2658
2659    (void) drv;
2660
2661    if (!dri2_can_export_dma_buf_image(disp, img))
2662       return EGL_FALSE;
2663
2664    /* rework later to provide multiple fds/strides/offsets */
2665    if (fds)
2666       dri2_dpy->image->queryImage(dri2_img->dri_image,
2667                                   __DRI_IMAGE_ATTRIB_FD, fds);
2668
2669    if (strides)
2670       dri2_dpy->image->queryImage(dri2_img->dri_image,
2671                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2672
2673    if (offsets) {
2674       int img_offset;
2675       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2676                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2677       if (ret)
2678          offsets[0] = img_offset;
2679       else
2680          offsets[0] = 0;
2681    }
2682
2683    return EGL_TRUE;
2684 }
2685
2686 #endif
2687
2688 _EGLImage *
2689 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2690                       _EGLContext *ctx, EGLenum target,
2691                       EGLClientBuffer buffer, const EGLint *attr_list)
2692 {
2693    (void) drv;
2694
2695    switch (target) {
2696    case EGL_GL_TEXTURE_2D_KHR:
2697    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2698    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2699    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2700    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2701    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2702    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2703    case EGL_GL_TEXTURE_3D_KHR:
2704       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2705    case EGL_GL_RENDERBUFFER_KHR:
2706       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2707 #ifdef HAVE_LIBDRM
2708    case EGL_DRM_BUFFER_MESA:
2709       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2710    case EGL_LINUX_DMA_BUF_EXT:
2711       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2712 #endif
2713 #ifdef HAVE_WAYLAND_PLATFORM
2714    case EGL_WAYLAND_BUFFER_WL:
2715       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2716 #endif
2717    default:
2718       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2719       return EGL_NO_IMAGE_KHR;
2720    }
2721 }
2722
2723 static EGLBoolean
2724 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2725 {
2726    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2727    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2728
2729    (void) drv;
2730
2731    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2732    free(dri2_img);
2733
2734    return EGL_TRUE;
2735 }
2736
2737 #ifdef HAVE_WAYLAND_PLATFORM
2738
2739 static void
2740 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2741                          struct wl_drm_buffer *buffer)
2742 {
2743    _EGLDisplay *disp = user_data;
2744    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2745    __DRIimage *img;
2746    int dri_components = 0;
2747
2748    if (fd == -1)
2749       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2750                                                   buffer->width,
2751                                                   buffer->height,
2752                                                   buffer->format,
2753                                                   (int*)&name, 1,
2754                                                   buffer->stride,
2755                                                   buffer->offset,
2756                                                   NULL);
2757    else
2758       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2759                                                 buffer->width,
2760                                                 buffer->height,
2761                                                 buffer->format,
2762                                                 &fd, 1,
2763                                                 buffer->stride,
2764                                                 buffer->offset,
2765                                                 NULL);
2766
2767    if (img == NULL)
2768       return;
2769
2770    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2771
2772    buffer->driver_format = NULL;
2773    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2774       if (wl_drm_components[i].dri_components == dri_components)
2775          buffer->driver_format = &wl_drm_components[i];
2776
2777    if (buffer->driver_format == NULL)
2778       dri2_dpy->image->destroyImage(img);
2779    else
2780       buffer->driver_buffer = img;
2781 }
2782
2783 static void
2784 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2785 {
2786    _EGLDisplay *disp = user_data;
2787    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2788
2789    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2790 }
2791
2792 static EGLBoolean
2793 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2794                              struct wl_display *wl_dpy)
2795 {
2796    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2797    const struct wayland_drm_callbacks wl_drm_callbacks = {
2798       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2799       .reference_buffer = dri2_wl_reference_buffer,
2800       .release_buffer = dri2_wl_release_buffer,
2801       .is_format_supported = dri2_wl_is_format_supported
2802    };
2803    int flags = 0;
2804    uint64_t cap;
2805
2806    (void) drv;
2807
2808    if (dri2_dpy->wl_server_drm)
2809            return EGL_FALSE;
2810
2811    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2812        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2813        dri2_dpy->image->base.version >= 7 &&
2814        dri2_dpy->image->createImageFromFds != NULL)
2815       flags |= WAYLAND_DRM_PRIME;
2816
2817    dri2_dpy->wl_server_drm =
2818            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2819                             &wl_drm_callbacks, disp, flags);
2820
2821    if (!dri2_dpy->wl_server_drm)
2822            return EGL_FALSE;
2823
2824 #ifdef HAVE_DRM_PLATFORM
2825    /* We have to share the wl_drm instance with gbm, so gbm can convert
2826     * wl_buffers to gbm bos. */
2827    if (dri2_dpy->gbm_dri)
2828       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2829 #endif
2830
2831    return EGL_TRUE;
2832 }
2833
2834 static EGLBoolean
2835 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2836                                struct wl_display *wl_dpy)
2837 {
2838    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2839
2840    (void) drv;
2841
2842    if (!dri2_dpy->wl_server_drm)
2843            return EGL_FALSE;
2844
2845    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2846    dri2_dpy->wl_server_drm = NULL;
2847
2848    return EGL_TRUE;
2849 }
2850
2851 static EGLBoolean
2852 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2853                              struct wl_resource *buffer_resource,
2854                              EGLint attribute, EGLint *value)
2855 {
2856    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2857    struct wl_drm_buffer *buffer;
2858    const struct wl_drm_components_descriptor *format;
2859
2860    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2861    if (!buffer)
2862       return EGL_FALSE;
2863
2864    format = buffer->driver_format;
2865    switch (attribute) {
2866    case EGL_TEXTURE_FORMAT:
2867       *value = format->components;
2868       return EGL_TRUE;
2869    case EGL_WIDTH:
2870       *value = buffer->width;
2871       return EGL_TRUE;
2872    case EGL_HEIGHT:
2873       *value = buffer->height;
2874       return EGL_TRUE;
2875    }
2876
2877    return EGL_FALSE;
2878 }
2879 #endif
2880
2881 static void
2882 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2883 {
2884    p_atomic_inc(&sync->refcount);
2885 }
2886
2887 static void
2888 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2889                     struct dri2_egl_sync *dri2_sync)
2890 {
2891    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2892       switch (dri2_sync->base.Type) {
2893       case EGL_SYNC_REUSABLE_KHR:
2894          cnd_destroy(&dri2_sync->cond);
2895          break;
2896       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2897          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2898             close(dri2_sync->base.SyncFd);
2899          break;
2900       default:
2901          break;
2902       }
2903
2904       if (dri2_sync->fence)
2905          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2906
2907       free(dri2_sync);
2908    }
2909 }
2910
2911 static _EGLSync *
2912 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
2913                  EGLenum type, const EGLAttrib *attrib_list)
2914 {
2915    _EGLContext *ctx = _eglGetCurrentContext();
2916    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2917    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2918    struct dri2_egl_sync *dri2_sync;
2919    EGLint ret;
2920    pthread_condattr_t attr;
2921
2922    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2923    if (!dri2_sync) {
2924       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2925       return NULL;
2926    }
2927
2928    if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
2929       free(dri2_sync);
2930       return NULL;
2931    }
2932
2933    switch (type) {
2934    case EGL_SYNC_FENCE_KHR:
2935       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2936       if (!dri2_sync->fence) {
2937          /* Why did it fail? DRI doesn't return an error code, so we emit
2938           * a generic EGL error that doesn't communicate user error.
2939           */
2940          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2941          free(dri2_sync);
2942          return NULL;
2943       }
2944       break;
2945
2946    case EGL_SYNC_CL_EVENT_KHR:
2947       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2948                                  dri2_dpy->dri_screen,
2949                                  dri2_sync->base.CLEvent);
2950       /* this can only happen if the cl_event passed in is invalid. */
2951       if (!dri2_sync->fence) {
2952          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2953          free(dri2_sync);
2954          return NULL;
2955       }
2956
2957       /* the initial status must be "signaled" if the cl_event is signaled */
2958       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2959                                             dri2_sync->fence, 0, 0))
2960          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2961       break;
2962
2963    case EGL_SYNC_REUSABLE_KHR:
2964       /* intialize attr */
2965       ret = pthread_condattr_init(&attr);
2966
2967       if (ret) {
2968          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2969          free(dri2_sync);
2970          return NULL;
2971       }
2972
2973       /* change clock attribute to CLOCK_MONOTONIC */
2974       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2975
2976       if (ret) {
2977          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2978          free(dri2_sync);
2979          return NULL;
2980       }
2981
2982       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2983
2984       if (ret) {
2985          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2986          free(dri2_sync);
2987          return NULL;
2988       }
2989
2990       /* initial status of reusable sync must be "unsignaled" */
2991       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2992       break;
2993
2994    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2995       if (dri2_dpy->fence->create_fence_fd) {
2996          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2997                                     dri2_ctx->dri_context,
2998                                     dri2_sync->base.SyncFd);
2999       }
3000       if (!dri2_sync->fence) {
3001          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3002          free(dri2_sync);
3003          return NULL;
3004       }
3005       break;
3006    }
3007
3008    p_atomic_set(&dri2_sync->refcount, 1);
3009    return &dri2_sync->base;
3010 }
3011
3012 static EGLBoolean
3013 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3014 {
3015    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3016    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3017    EGLint ret = EGL_TRUE;
3018    EGLint err;
3019
3020    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3021     * then unlock all threads possibly blocked by the reusable sync before
3022     * destroying it.
3023     */
3024    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3025        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3026       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3027       /* unblock all threads currently blocked by sync */
3028       err = cnd_broadcast(&dri2_sync->cond);
3029
3030       if (err) {
3031          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3032          ret = EGL_FALSE;
3033       }
3034    }
3035
3036    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3037
3038    return ret;
3039 }
3040
3041 static EGLint
3042 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3043 {
3044    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3045    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3046
3047    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3048
3049    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3050       /* try to retrieve the actual native fence fd.. if rendering is
3051        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3052        */
3053       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3054                                                    dri2_sync->fence);
3055    }
3056
3057    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3058       /* if native fence fd still not created, return an error: */
3059       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3060       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3061    }
3062
3063    return dup(sync->SyncFd);
3064 }
3065
3066 static void
3067 dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *dpy,
3068                           EGLSetBlobFuncANDROID set,
3069                           EGLGetBlobFuncANDROID get)
3070 {
3071    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3072    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3073                                    dpy->BlobCacheSet,
3074                                    dpy->BlobCacheGet);
3075 }
3076
3077 static EGLint
3078 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3079                       EGLint flags, EGLTime timeout)
3080 {
3081    _EGLContext *ctx = _eglGetCurrentContext();
3082    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3083    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3084    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3085    unsigned wait_flags = 0;
3086
3087    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3088
3089    /* The EGL_KHR_fence_sync spec states:
3090     *
3091     *    "If no context is current for the bound API,
3092     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3093     */
3094    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3095       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3096
3097    /* the sync object should take a reference while waiting */
3098    dri2_egl_ref_sync(dri2_sync);
3099
3100    switch (sync->Type) {
3101    case EGL_SYNC_FENCE_KHR:
3102    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3103    case EGL_SYNC_CL_EVENT_KHR:
3104       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3105                                          dri2_sync->fence, wait_flags,
3106                                          timeout))
3107          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3108       else
3109          ret = EGL_TIMEOUT_EXPIRED_KHR;
3110       break;
3111
3112    case EGL_SYNC_REUSABLE_KHR:
3113       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3114           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3115          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3116          dri2_gl_flush();
3117       }
3118
3119       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3120       if (timeout == EGL_FOREVER_KHR) {
3121          mtx_lock(&dri2_sync->mutex);
3122          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3123          mtx_unlock(&dri2_sync->mutex);
3124       } else {
3125          /* if reusable sync has not been yet signaled */
3126          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3127             /* timespecs for cnd_timedwait */
3128             struct timespec current;
3129             struct timespec expire;
3130
3131             /* We override the clock to monotonic when creating the condition
3132              * variable. */
3133             clock_gettime(CLOCK_MONOTONIC, &current);
3134
3135             /* calculating when to expire */
3136             expire.tv_nsec = timeout % 1000000000L;
3137             expire.tv_sec = timeout / 1000000000L;
3138
3139             expire.tv_nsec += current.tv_nsec;
3140             expire.tv_sec += current.tv_sec;
3141
3142             /* expire.nsec now is a number between 0 and 1999999998 */
3143             if (expire.tv_nsec > 999999999L) {
3144                expire.tv_sec++;
3145                expire.tv_nsec -= 1000000000L;
3146             }
3147
3148             mtx_lock(&dri2_sync->mutex);
3149             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3150             mtx_unlock(&dri2_sync->mutex);
3151
3152             if (ret == thrd_busy) {
3153                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3154                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3155                } else {
3156                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3157                   ret = EGL_FALSE;
3158                }
3159             }
3160          }
3161       }
3162       break;
3163   }
3164   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3165
3166   return ret;
3167 }
3168
3169 static EGLBoolean
3170 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3171                       EGLenum mode)
3172 {
3173    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3174    EGLint ret;
3175
3176    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3177       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3178
3179    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3180       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3181
3182    dri2_sync->base.SyncStatus = mode;
3183
3184    if (mode == EGL_SIGNALED_KHR) {
3185       ret = cnd_broadcast(&dri2_sync->cond);
3186
3187       /* fail to broadcast */
3188       if (ret)
3189          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3190    }
3191
3192    return EGL_TRUE;
3193 }
3194
3195 static EGLint
3196 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3197 {
3198    _EGLContext *ctx = _eglGetCurrentContext();
3199    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3200    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3201    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3202
3203    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3204                                      dri2_sync->fence, 0);
3205    return EGL_TRUE;
3206 }
3207
3208 static int
3209 dri2_interop_query_device_info(_EGLDisplay *dpy, _EGLContext *ctx,
3210                                struct mesa_glinterop_device_info *out)
3211 {
3212    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3213    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3214
3215    if (!dri2_dpy->interop)
3216       return MESA_GLINTEROP_UNSUPPORTED;
3217
3218    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3219 }
3220
3221 static int
3222 dri2_interop_export_object(_EGLDisplay *dpy, _EGLContext *ctx,
3223                            struct mesa_glinterop_export_in *in,
3224                            struct mesa_glinterop_export_out *out)
3225 {
3226    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3227    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3228
3229    if (!dri2_dpy->interop)
3230       return MESA_GLINTEROP_UNSUPPORTED;
3231
3232    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3233 }
3234
3235 /**
3236  * This is the main entrypoint into the driver, called by libEGL.
3237  * Gets an _EGLDriver object and init its dispatch table.
3238  */
3239 void
3240 _eglInitDriver(_EGLDriver *dri2_drv)
3241 {
3242    dri2_drv->API.Initialize = dri2_initialize;
3243    dri2_drv->API.Terminate = dri2_terminate;
3244    dri2_drv->API.CreateContext = dri2_create_context;
3245    dri2_drv->API.DestroyContext = dri2_destroy_context;
3246    dri2_drv->API.MakeCurrent = dri2_make_current;
3247    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3248    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3249    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3250    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3251    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3252    dri2_drv->API.WaitClient = dri2_wait_client;
3253    dri2_drv->API.WaitNative = dri2_wait_native;
3254    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3255    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3256    dri2_drv->API.SwapInterval = dri2_swap_interval;
3257    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3258    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3259    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3260    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3261    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3262    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3263    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3264    dri2_drv->API.CreateImageKHR = dri2_create_image;
3265    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3266    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3267    dri2_drv->API.QuerySurface = dri2_query_surface;
3268    dri2_drv->API.QueryDriverName = dri2_query_driver_name;
3269    dri2_drv->API.QueryDriverConfig = dri2_query_driver_config;
3270 #ifdef HAVE_LIBDRM
3271    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3272    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3273    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3274    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3275    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3276    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3277 #endif
3278 #ifdef HAVE_WAYLAND_PLATFORM
3279    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3280    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3281    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3282 #endif
3283    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3284    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3285    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3286    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3287    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3288    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3289    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3290    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3291    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3292    dri2_drv->API.SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs;
3293 }