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-uapi/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 /* Additional definitions not yet in the drm_fourcc.h.
  70  */
  71 #ifndef DRM_FORMAT_P010
  72 #define DRM_FORMAT_P010          fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cb:Cr plane 10 bits per channel */
  73 #endif
  74
  75 #ifndef DRM_FORMAT_P012
  76 #define DRM_FORMAT_P012          fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cb:Cr plane 12 bits per channel */
  77 #endif
  78
  79 #ifndef DRM_FORMAT_P016
  80 #define DRM_FORMAT_P016          fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cb:Cr plane 16 bits per channel */
  81 #endif
  82
  83 #define NUM_ATTRIBS 12
  84
  85 static void
  86 dri_set_background_context(void *loaderPrivate)
  87 {
  88    _EGLContext *ctx = _eglGetCurrentContext();
  89    _EGLThreadInfo *t = _eglGetCurrentThread();
  90
  91    _eglBindContextToThread(ctx, t);
  92 }
  93
  94 static void
  95 dri2_gl_flush()
  96 {
  97    static void (*glFlush)(void);
  98    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
  99
 100    mtx_lock(&glFlushMutex);
 101    if (!glFlush)
 102       glFlush = _glapi_get_proc_address("glFlush");
 103    mtx_unlock(&glFlushMutex);
 104
 105    /* if glFlush is not available things are horribly broken */
 106    if (!glFlush) {
 107       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 108       return;
 109    }
 110
 111    glFlush();
 112 }
 113
 114 static GLboolean
 115 dri_is_thread_safe(void *loaderPrivate)
 116 {
 117    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 118    _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 119
 120 #ifdef HAVE_X11_PLATFORM
 121    Display *xdpy = (Display*)display->PlatformDisplay;
 122
 123    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 124     * platform
 125     *
 126     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 127     * It wll be NULL if XInitThreads wasn't called.
 128     */
 129    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 130       return false;
 131 #endif
 132
 133 #ifdef HAVE_WAYLAND_PLATFORM
 134    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 135       return true;
 136 #endif
 137
 138    return true;
 139 }
 140
 141 const __DRIbackgroundCallableExtension background_callable_extension = {
 142    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 143
 144    .setBackgroundContext = dri_set_background_context,
 145    .isThreadSafe         = dri_is_thread_safe,
 146 };
 147
 148 const __DRIuseInvalidateExtension use_invalidate = {
 149    .base = { __DRI_USE_INVALIDATE, 1 }
 150 };
 151
 152 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 153    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 154    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 155    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,
 156    [__DRI_ATTRIB_GREEN_SIZE]            = EGL_GREEN_SIZE,
 157    [__DRI_ATTRIB_BLUE_SIZE]             = EGL_BLUE_SIZE,
 158    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 159    [__DRI_ATTRIB_ALPHA_SIZE]            = EGL_ALPHA_SIZE,
 160    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 161    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 162    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 163    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 164    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 165    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 166    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 167    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 168    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 169    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 170 };
 171
 172 const __DRIconfig *
 173 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 174                     EGLenum colorspace)
 175 {
 176    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 177    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 178
 179    return conf->dri_config[double_buffer][srgb];
 180 }
 181
 182 static EGLBoolean
 183 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 184 {
 185    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 186       return EGL_FALSE;
 187
 188    if (!_eglMatchConfig(conf, criteria))
 189       return EGL_FALSE;
 190
 191    return EGL_TRUE;
 192 }
 193
 194 struct dri2_egl_config *
 195 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 196                 EGLint surface_type, const EGLint *attr_list,
 197                 const unsigned int *rgba_masks)
 198 {
 199    struct dri2_egl_config *conf;
 200    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 201    _EGLConfig base;
 202    unsigned int attrib, value, double_buffer;
 203    bool srgb = false;
 204    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 205    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 206    _EGLConfig *matching_config;
 207    EGLint num_configs = 0;
 208    EGLint config_id;
 209
 210    _eglInitConfig(&base, disp, id);
 211
 212    double_buffer = 0;
 213    bind_to_texture_rgb = 0;
 214    bind_to_texture_rgba = 0;
 215
 216    for (int i = 0; dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib,
 217                                                      &value); ++i) {
 218       switch (attrib) {
 219       case __DRI_ATTRIB_RENDER_TYPE:
 220          if (value & __DRI_ATTRIB_RGBA_BIT)
 221             value = EGL_RGB_BUFFER;
 222          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 223             value = EGL_LUMINANCE_BUFFER;
 224          else
 225             return NULL;
 226          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 227          break;
 228
 229       case __DRI_ATTRIB_CONFIG_CAVEAT:
 230          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 231             value = EGL_NON_CONFORMANT_CONFIG;
 232          else if (value & __DRI_ATTRIB_SLOW_BIT)
 233             value = EGL_SLOW_CONFIG;
 234          else
 235             value = EGL_NONE;
 236          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 237          break;
 238
 239       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 240          bind_to_texture_rgb = value;
 241          break;
 242
 243       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 244          bind_to_texture_rgba = value;
 245          break;
 246
 247       case __DRI_ATTRIB_DOUBLE_BUFFER:
 248          double_buffer = value;
 249          break;
 250
 251       case __DRI_ATTRIB_RED_MASK:
 252          dri_masks[0] = value;
 253          break;
 254
 255       case __DRI_ATTRIB_GREEN_MASK:
 256          dri_masks[1] = value;
 257          break;
 258
 259       case __DRI_ATTRIB_BLUE_MASK:
 260          dri_masks[2] = value;
 261          break;
 262
 263       case __DRI_ATTRIB_ALPHA_MASK:
 264          dri_masks[3] = value;
 265          break;
 266
 267       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 268       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 269       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 270       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 271          /* Don't expose visuals with the accumulation buffer. */
 272          if (value > 0)
 273             return NULL;
 274          break;
 275
 276       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 277          srgb = value != 0;
 278          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 279             return NULL;
 280          break;
 281
 282       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 283          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 284                           _EGL_MAX_PBUFFER_WIDTH);
 285          break;
 286       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 287          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 288                           _EGL_MAX_PBUFFER_HEIGHT);
 289          break;
 290       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
 291          if (disp->Extensions.KHR_mutable_render_buffer)
 292             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
 293          break;
 294       default:
 295          key = dri2_to_egl_attribute_map[attrib];
 296          if (key != 0)
 297             _eglSetConfigKey(&base, key, value);
 298          break;
 299       }
 300    }
 301
 302    if (attr_list)
 303       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 304          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 305
 306    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 307       return NULL;
 308
 309    base.NativeRenderable = EGL_TRUE;
 310
 311    base.SurfaceType = surface_type;
 312    if (surface_type & (EGL_PBUFFER_BIT |
 313        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 314       base.BindToTextureRGB = bind_to_texture_rgb;
 315       if (base.AlphaSize > 0)
 316          base.BindToTextureRGBA = bind_to_texture_rgba;
 317    }
 318
 319    base.RenderableType = disp->ClientAPIs;
 320    base.Conformant = disp->ClientAPIs;
 321
 322    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 323    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 324
 325    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 326       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 327       return NULL;
 328    }
 329
 330    config_id = base.ConfigID;
 331    base.ConfigID    = EGL_DONT_CARE;
 332    base.SurfaceType = EGL_DONT_CARE;
 333    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 334                                  (_EGLArrayForEach) dri2_match_config, &base);
 335
 336    if (num_configs == 1) {
 337       conf = (struct dri2_egl_config *) matching_config;
 338
 339       if (!conf->dri_config[double_buffer][srgb])
 340          conf->dri_config[double_buffer][srgb] = dri_config;
 341       else
 342          /* a similar config type is already added (unlikely) => discard */
 343          return NULL;
 344    }
 345    else if (num_configs == 0) {
 346       conf = calloc(1, sizeof *conf);
 347       if (conf == NULL)
 348          return NULL;
 349
 350       conf->dri_config[double_buffer][srgb] = dri_config;
 351
 352       memcpy(&conf->base, &base, sizeof base);
 353       conf->base.SurfaceType = 0;
 354       conf->base.ConfigID = config_id;
 355
 356       _eglLinkConfig(&conf->base);
 357    }
 358    else {
 359       unreachable("duplicates should not be possible");
 360       return NULL;
 361    }
 362
 363    if (double_buffer) {
 364       surface_type &= ~EGL_PIXMAP_BIT;
 365    }
 366
 367    /* No support for pbuffer + MSAA for now.
 368     *
 369     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 370     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 371     */
 372    if (base.Samples) {
 373       surface_type &= ~EGL_PBUFFER_BIT;
 374    }
 375
 376    conf->base.SurfaceType |= surface_type;
 377
 378    return conf;
 379 }
 380
 381 __DRIimage *
 382 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 383 {
 384    _EGLDisplay *disp = data;
 385    struct dri2_egl_image *dri2_img;
 386    _EGLImage *img;
 387
 388    (void) screen;
 389
 390    img = _eglLookupImage(image, disp);
 391    if (img == NULL) {
 392       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 393       return NULL;
 394    }
 395
 396    dri2_img = dri2_egl_image(image);
 397
 398    return dri2_img->dri_image;
 399 }
 400
 401 const __DRIimageLookupExtension image_lookup_extension = {
 402    .base = { __DRI_IMAGE_LOOKUP, 1 },
 403
 404    .lookupEGLImage       = dri2_lookup_egl_image
 405 };
 406
 407 struct dri2_extension_match {
 408    const char *name;
 409    int version;
 410    int offset;
 411 };
 412
 413 static const struct dri2_extension_match dri3_driver_extensions[] = {
 414    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 415    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 416    { NULL, 0, 0 }
 417 };
 418
 419 static const struct dri2_extension_match dri2_driver_extensions[] = {
 420    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 421    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 422    { NULL, 0, 0 }
 423 };
 424
 425 static const struct dri2_extension_match dri2_core_extensions[] = {
 426    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 427    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 428    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 429    { NULL, 0, 0 }
 430 };
 431
 432 static const struct dri2_extension_match swrast_driver_extensions[] = {
 433    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 434    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 435    { NULL, 0, 0 }
 436 };
 437
 438 static const struct dri2_extension_match swrast_core_extensions[] = {
 439    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 440    { NULL, 0, 0 }
 441 };
 442
 443 static const struct dri2_extension_match optional_driver_extensions[] = {
 444    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
 445    { NULL, 0, 0 }
 446 };
 447
 448 static const struct dri2_extension_match optional_core_extensions[] = {
 449    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 450    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 451    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 452    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 453    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 454    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 455    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 456    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 457    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 458    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 459    { NULL, 0, 0 }
 460 };
 461
 462 static EGLBoolean
 463 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 464                      const struct dri2_extension_match *matches,
 465                      const __DRIextension **extensions,
 466                      bool optional)
 467 {
 468    int ret = EGL_TRUE;
 469    void *field;
 470
 471    for (int i = 0; extensions[i]; i++) {
 472       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 473       for (int j = 0; matches[j].name; j++) {
 474          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 475              extensions[i]->version >= matches[j].version) {
 476             field = ((char *) dri2_dpy + matches[j].offset);
 477             *(const __DRIextension **) field = extensions[i];
 478             _eglLog(_EGL_INFO, "found extension %s version %d",
 479                     extensions[i]->name, extensions[i]->version);
 480             break;
 481          }
 482       }
 483    }
 484
 485    for (int j = 0; matches[j].name; j++) {
 486       field = ((char *) dri2_dpy + matches[j].offset);
 487       if (*(const __DRIextension **) field == NULL) {
 488          if (optional) {
 489             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 490                     matches[j].name, matches[j].version);
 491          } else {
 492             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 493                     matches[j].name, matches[j].version);
 494             ret = EGL_FALSE;
 495          }
 496       }
 497    }
 498
 499    return ret;
 500 }
 501
 502 static const __DRIextension **
 503 dri2_open_driver(_EGLDisplay *disp)
 504 {
 505    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 506    static const char *search_path_vars[] = {
 507       "LIBGL_DRIVERS_PATH",
 508       NULL,
 509    };
 510
 511    return loader_open_driver(dri2_dpy->driver_name,
 512                              &dri2_dpy->driver,
 513                              search_path_vars);
 514 }
 515
 516 static EGLBoolean
 517 dri2_load_driver_common(_EGLDisplay *disp,
 518                         const struct dri2_extension_match *driver_extensions)
 519 {
 520    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 521    const __DRIextension **extensions;
 522
 523    extensions = dri2_open_driver(disp);
 524    if (!extensions)
 525       return EGL_FALSE;
 526
 527    if (!dri2_bind_extensions(dri2_dpy, driver_extensions, extensions, false)) {
 528       dlclose(dri2_dpy->driver);
 529       return EGL_FALSE;
 530    }
 531    dri2_dpy->driver_extensions = extensions;
 532
 533    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 534
 535    return EGL_TRUE;
 536 }
 537
 538 EGLBoolean
 539 dri2_load_driver(_EGLDisplay *disp)
 540 {
 541    return dri2_load_driver_common(disp, dri2_driver_extensions);
 542 }
 543
 544 EGLBoolean
 545 dri2_load_driver_dri3(_EGLDisplay *disp)
 546 {
 547    return dri2_load_driver_common(disp, dri3_driver_extensions);
 548 }
 549
 550 EGLBoolean
 551 dri2_load_driver_swrast(_EGLDisplay *disp)
 552 {
 553    return dri2_load_driver_common(disp, swrast_driver_extensions);
 554 }
 555
 556 static unsigned
 557 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 558 {
 559    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 560    unsigned int value = 0;
 561
 562    if (!rendererQuery ||
 563        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 564       return 0;
 565
 566    return value;
 567 }
 568
 569 static const char *
 570 dri2_query_driver_name(_EGLDisplay *disp)
 571 {
 572     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 573     return dri2_dpy->driver_name;
 574 }
 575
 576 static char *
 577 dri2_query_driver_config(_EGLDisplay *disp)
 578 {
 579     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 580     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
 581
 582     if (ext->base.version >= 2)
 583         return ext->getXml(dri2_dpy->driver_name);
 584
 585     return strdup(ext->xml);
 586 }
 587
 588
 589 void
 590 dri2_setup_screen(_EGLDisplay *disp)
 591 {
 592    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 593    unsigned int api_mask;
 594
 595    /*
 596     * EGL 1.5 specification defines the default value to 1. Moreover,
 597     * eglSwapInterval() is required to clamp requested value to the supported
 598     * range. Since the default value is implicitly assumed to be supported,
 599     * use it as both minimum and maximum for the platforms that do not allow
 600     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 601     * override these values already.
 602     */
 603    dri2_dpy->min_swap_interval = 1;
 604    dri2_dpy->max_swap_interval = 1;
 605    dri2_dpy->default_swap_interval = 1;
 606
 607    if (dri2_dpy->image_driver) {
 608       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 609    } else if (dri2_dpy->dri2) {
 610       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 611    } else {
 612       assert(dri2_dpy->swrast);
 613       api_mask = 1 << __DRI_API_OPENGL |
 614                  1 << __DRI_API_GLES |
 615                  1 << __DRI_API_GLES2 |
 616                  1 << __DRI_API_GLES3;
 617    }
 618
 619    disp->ClientAPIs = 0;
 620    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 621       disp->ClientAPIs |= EGL_OPENGL_BIT;
 622    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 623       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 624    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 625       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 626    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 627       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 628
 629    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 630    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 631    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 632
 633    if (dri2_dpy->configOptions) {
 634        disp->Extensions.MESA_query_driver = EGL_TRUE;
 635    }
 636
 637    /* Report back to EGL the bitmask of priorities supported */
 638    disp->Extensions.IMG_context_priority =
 639       dri2_renderer_query_integer(dri2_dpy,
 640                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 641
 642    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 643
 644    if (dri2_renderer_query_integer(dri2_dpy,
 645                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 646       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 647
 648    if (dri2_dpy->image_driver ||
 649        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 650        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 651       disp->Extensions.KHR_create_context = EGL_TRUE;
 652
 653       if (dri2_dpy->robustness)
 654          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 655    }
 656
 657    if (dri2_dpy->no_error)
 658       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 659
 660    if (dri2_dpy->fence) {
 661       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 662       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 663       if (dri2_dpy->fence->get_fence_from_cl_event)
 664          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 665       if (dri2_dpy->fence->base.version >= 2 &&
 666           dri2_dpy->fence->get_capabilities) {
 667          unsigned capabilities =
 668             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 669          disp->Extensions.ANDROID_native_fence_sync =
 670             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 671       }
 672    }
 673
 674    if (dri2_dpy->blob)
 675       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 676
 677    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 678
 679    if (dri2_dpy->image) {
 680       if (dri2_dpy->image->base.version >= 10 &&
 681           dri2_dpy->image->getCapabilities != NULL) {
 682          int capabilities;
 683
 684          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 685          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 686
 687          if (dri2_dpy->image->base.version >= 11)
 688             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 689       } else {
 690          disp->Extensions.MESA_drm_image = EGL_TRUE;
 691          if (dri2_dpy->image->base.version >= 11)
 692             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 693       }
 694
 695       disp->Extensions.KHR_image_base = EGL_TRUE;
 696       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 697       if (dri2_dpy->image->base.version >= 5 &&
 698           dri2_dpy->image->createImageFromTexture) {
 699          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 700          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 701
 702          if (dri2_renderer_query_integer(dri2_dpy,
 703                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 704              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 705       }
 706 #ifdef HAVE_LIBDRM
 707       if (dri2_dpy->image->base.version >= 8 &&
 708           dri2_dpy->image->createImageFromDmaBufs) {
 709          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 710       }
 711       if (dri2_dpy->image->base.version >= 15 &&
 712           dri2_dpy->image->createImageFromDmaBufs2 &&
 713           dri2_dpy->image->queryDmaBufFormats &&
 714           dri2_dpy->image->queryDmaBufModifiers) {
 715          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 716       }
 717 #endif
 718    }
 719
 720    if (dri2_dpy->flush_control)
 721       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 722 }
 723
 724 void
 725 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 726 {
 727    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 728    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 729
 730    /* Allow driconf to override applications.*/
 731    if (dri2_dpy->config)
 732       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 733                                      "vblank_mode", &vblank_mode);
 734    switch (vblank_mode) {
 735    case DRI_CONF_VBLANK_NEVER:
 736       dri2_dpy->min_swap_interval = 0;
 737       dri2_dpy->max_swap_interval = 0;
 738       dri2_dpy->default_swap_interval = 0;
 739       break;
 740    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 741       dri2_dpy->min_swap_interval = 1;
 742       dri2_dpy->max_swap_interval = max_swap_interval;
 743       dri2_dpy->default_swap_interval = 1;
 744       break;
 745    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 746       dri2_dpy->min_swap_interval = 0;
 747       dri2_dpy->max_swap_interval = max_swap_interval;
 748       dri2_dpy->default_swap_interval = 0;
 749       break;
 750    default:
 751    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 752       dri2_dpy->min_swap_interval = 0;
 753       dri2_dpy->max_swap_interval = max_swap_interval;
 754       dri2_dpy->default_swap_interval = 1;
 755       break;
 756    }
 757 }
 758
 759 /* All platforms but DRM call this function to create the screen and populate
 760  * the driver_configs. DRM inherits that information from its display - GBM.
 761  */
 762 EGLBoolean
 763 dri2_create_screen(_EGLDisplay *disp)
 764 {
 765    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 766
 767    if (dri2_dpy->image_driver) {
 768       dri2_dpy->dri_screen =
 769          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 770                                                   dri2_dpy->loader_extensions,
 771                                                   dri2_dpy->driver_extensions,
 772                                                   &dri2_dpy->driver_configs,
 773                                                   disp);
 774    } else if (dri2_dpy->dri2) {
 775       if (dri2_dpy->dri2->base.version >= 4) {
 776          dri2_dpy->dri_screen =
 777             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 778                                              dri2_dpy->loader_extensions,
 779                                              dri2_dpy->driver_extensions,
 780                                              &dri2_dpy->driver_configs, disp);
 781       } else {
 782          dri2_dpy->dri_screen =
 783             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 784                                             dri2_dpy->loader_extensions,
 785                                             &dri2_dpy->driver_configs, disp);
 786       }
 787    } else {
 788       assert(dri2_dpy->swrast);
 789       if (dri2_dpy->swrast->base.version >= 4) {
 790          dri2_dpy->dri_screen =
 791             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 792                                                dri2_dpy->driver_extensions,
 793                                                &dri2_dpy->driver_configs, disp);
 794       } else {
 795          dri2_dpy->dri_screen =
 796             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 797                                               &dri2_dpy->driver_configs, disp);
 798       }
 799    }
 800
 801    if (dri2_dpy->dri_screen == NULL) {
 802       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 803       return EGL_FALSE;
 804    }
 805
 806    dri2_dpy->own_dri_screen = true;
 807    return EGL_TRUE;
 808 }
 809
 810 EGLBoolean
 811 dri2_setup_extensions(_EGLDisplay *disp)
 812 {
 813    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 814    const struct dri2_extension_match *mandatory_core_extensions;
 815    const __DRIextension **extensions;
 816
 817    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 818
 819    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 820       mandatory_core_extensions = dri2_core_extensions;
 821    else
 822       mandatory_core_extensions = swrast_core_extensions;
 823
 824    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 825       return EGL_FALSE;
 826
 827 #ifdef HAVE_DRI3_MODIFIERS
 828    dri2_dpy->multibuffers_available =
 829       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
 830                                             dri2_dpy->dri3_minor_version >= 2)) &&
 831       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
 832                                                dri2_dpy->present_minor_version >= 2)) &&
 833       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
 834 #endif
 835
 836    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 837    return EGL_TRUE;
 838 }
 839
 840 /**
 841  * Called via eglInitialize(), GLX_drv->API.Initialize().
 842  *
 843  * This must be guaranteed to be called exactly once, even if eglInitialize is
 844  * called many times (without a eglTerminate in between).
 845  */
 846 static EGLBoolean
 847 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 848 {
 849    EGLBoolean ret = EGL_FALSE;
 850    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 851
 852    /* In the case where the application calls eglMakeCurrent(context1),
 853     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 854     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 855     * initialized, as we need it to be able to free context1 correctly.
 856     *
 857     * It would probably be safest to forcibly release the display with
 858     * dri2_display_release, to make sure the display is reinitialized correctly.
 859     * However, the EGL spec states that we need to keep a reference to the
 860     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 861     * we would leak context1 as we would be missing the old display connection
 862     * to free it up correctly.
 863     */
 864    if (dri2_dpy) {
 865       dri2_dpy->ref_count++;
 866       return EGL_TRUE;
 867    }
 868
 869    loader_set_logger(_eglLog);
 870
 871    switch (disp->Platform) {
 872    case _EGL_PLATFORM_SURFACELESS:
 873       ret = dri2_initialize_surfaceless(drv, disp);
 874       break;
 875    case _EGL_PLATFORM_X11:
 876       ret = dri2_initialize_x11(drv, disp);
 877       break;
 878    case _EGL_PLATFORM_DRM:
 879       ret = dri2_initialize_drm(drv, disp);
 880       break;
 881    case _EGL_PLATFORM_WAYLAND:
 882       ret = dri2_initialize_wayland(drv, disp);
 883       break;
 884    case _EGL_PLATFORM_ANDROID:
 885       ret = dri2_initialize_android(drv, disp);
 886       break;
 887    default:
 888       unreachable("Callers ensure we cannot get here.");
 889       return EGL_FALSE;
 890    }
 891
 892    if (!ret)
 893       return EGL_FALSE;
 894
 895    dri2_dpy = dri2_egl_display(disp);
 896    dri2_dpy->ref_count++;
 897
 898    return EGL_TRUE;
 899 }
 900
 901 /**
 902  * Decrement display reference count, and free up display if necessary.
 903  */
 904 static void
 905 dri2_display_release(_EGLDisplay *disp)
 906 {
 907    struct dri2_egl_display *dri2_dpy;
 908
 909    if (!disp)
 910       return;
 911
 912    dri2_dpy = dri2_egl_display(disp);
 913
 914    assert(dri2_dpy->ref_count > 0);
 915    dri2_dpy->ref_count--;
 916
 917    if (dri2_dpy->ref_count > 0)
 918       return;
 919
 920    _eglCleanupDisplay(disp);
 921    dri2_display_destroy(disp);
 922 }
 923
 924 void
 925 dri2_display_destroy(_EGLDisplay *disp)
 926 {
 927    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 928
 929    if (dri2_dpy->own_dri_screen) {
 930       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
 931          dri2_dpy->vtbl->close_screen_notify(disp);
 932       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 933    }
 934    if (dri2_dpy->fd >= 0)
 935       close(dri2_dpy->fd);
 936    if (dri2_dpy->driver)
 937       dlclose(dri2_dpy->driver);
 938    free(dri2_dpy->driver_name);
 939
 940 #ifdef HAVE_WAYLAND_PLATFORM
 941    free(dri2_dpy->device_name);
 942 #endif
 943
 944    switch (disp->Platform) {
 945    case _EGL_PLATFORM_X11:
 946       dri2_teardown_x11(dri2_dpy);
 947       break;
 948    case _EGL_PLATFORM_DRM:
 949       dri2_teardown_drm(dri2_dpy);
 950       break;
 951    case _EGL_PLATFORM_WAYLAND:
 952       dri2_teardown_wayland(dri2_dpy);
 953       break;
 954    default:
 955       /* TODO: add teardown for other platforms */
 956       break;
 957    }
 958
 959    /* The drm platform does not create the screen/driver_configs but reuses
 960     * the ones from the gbm device. As such the gbm itself is responsible
 961     * for the cleanup.
 962     */
 963    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
 964       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
 965          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
 966       free(dri2_dpy->driver_configs);
 967    }
 968    free(dri2_dpy);
 969    disp->DriverData = NULL;
 970 }
 971
 972 __DRIbuffer *
 973 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
 974                                     unsigned int att, unsigned int format)
 975 {
 976    struct dri2_egl_display *dri2_dpy =
 977       dri2_egl_display(dri2_surf->base.Resource.Display);
 978
 979    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
 980       return NULL;
 981
 982    if (!dri2_surf->local_buffers[att]) {
 983       dri2_surf->local_buffers[att] =
 984          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
 985                                         dri2_surf->base.Width, dri2_surf->base.Height);
 986    }
 987
 988    return dri2_surf->local_buffers[att];
 989 }
 990
 991 void
 992 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
 993 {
 994    struct dri2_egl_display *dri2_dpy =
 995       dri2_egl_display(dri2_surf->base.Resource.Display);
 996
 997    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
 998       if (dri2_surf->local_buffers[i]) {
 999          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1000                                        dri2_surf->local_buffers[i]);
1001          dri2_surf->local_buffers[i] = NULL;
1002       }
1003    }
1004 }
1005
1006 /**
1007  * Called via eglTerminate(), drv->API.Terminate().
1008  *
1009  * This must be guaranteed to be called exactly once, even if eglTerminate is
1010  * called many times (without a eglInitialize in between).
1011  */
1012 static EGLBoolean
1013 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1014 {
1015    /* Release all non-current Context/Surfaces. */
1016    _eglReleaseDisplayResources(drv, disp);
1017
1018    dri2_display_release(disp);
1019
1020    return EGL_TRUE;
1021 }
1022
1023 /**
1024  * Set the error code after a call to
1025  * dri2_egl_display::dri2::createContextAttribs.
1026  */
1027 static void
1028 dri2_create_context_attribs_error(int dri_error)
1029 {
1030    EGLint egl_error;
1031
1032    switch (dri_error) {
1033    case __DRI_CTX_ERROR_SUCCESS:
1034       return;
1035
1036    case __DRI_CTX_ERROR_NO_MEMORY:
1037       egl_error = EGL_BAD_ALLOC;
1038       break;
1039
1040   /* From the EGL_KHR_create_context spec, section "Errors":
1041    *
1042    *   * If <config> does not support a client API context compatible
1043    *     with the requested API major and minor version, [...] context flags,
1044    *     and context reset notification behavior (for client API types where
1045    *     these attributes are supported), then an EGL_BAD_MATCH error is
1046    *     generated.
1047    *
1048    *   * If an OpenGL ES context is requested and the values for
1049    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1050    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1051    *     is not defined, than an EGL_BAD_MATCH error is generated.
1052    *
1053    *   * If an OpenGL context is requested, the requested version is
1054    *     greater than 3.2, and the value for attribute
1055    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1056    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1057    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1058    *     one of these bits set; or if the implementation does not support
1059    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1060    */
1061    case __DRI_CTX_ERROR_BAD_API:
1062    case __DRI_CTX_ERROR_BAD_VERSION:
1063    case __DRI_CTX_ERROR_BAD_FLAG:
1064       egl_error = EGL_BAD_MATCH;
1065       break;
1066
1067   /* From the EGL_KHR_create_context spec, section "Errors":
1068    *
1069    *   * If an attribute name or attribute value in <attrib_list> is not
1070    *     recognized (including unrecognized bits in bitmask attributes),
1071    *     then an EGL_BAD_ATTRIBUTE error is generated."
1072    */
1073    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1074    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1075       egl_error = EGL_BAD_ATTRIBUTE;
1076       break;
1077
1078    default:
1079       assert(!"unknown dri_error code");
1080       egl_error = EGL_BAD_MATCH;
1081       break;
1082    }
1083
1084    _eglError(egl_error, "dri2_create_context");
1085 }
1086
1087 static bool
1088 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1089                           struct dri2_egl_display *dri2_dpy,
1090                           uint32_t *ctx_attribs,
1091                           unsigned *num_attribs)
1092 {
1093    int pos = 0;
1094
1095    assert(*num_attribs >= NUM_ATTRIBS);
1096
1097    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1098    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1099    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1100    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1101
1102    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1103       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1104        * extension, don't even try to send it the robust-access flag.
1105        * It may explode.  Instead, generate the required EGL error here.
1106        */
1107       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1108             && !dri2_dpy->robustness) {
1109          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1110          return false;
1111       }
1112
1113       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1114       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1115          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1116    }
1117
1118    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1119       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1120        * extension, don't even try to send it a reset strategy.  It may
1121        * explode.  Instead, generate the required EGL error here.
1122        */
1123       if (!dri2_dpy->robustness) {
1124          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1125          return false;
1126       }
1127
1128       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1129       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1130    }
1131
1132    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1133       unsigned val;
1134
1135       switch (dri2_ctx->base.ContextPriority) {
1136       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1137          val = __DRI_CTX_PRIORITY_HIGH;
1138          break;
1139       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1140          val = __DRI_CTX_PRIORITY_MEDIUM;
1141          break;
1142       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1143          val = __DRI_CTX_PRIORITY_LOW;
1144          break;
1145       default:
1146          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1147          return false;
1148       }
1149
1150       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1151       ctx_attribs[pos++] = val;
1152    }
1153
1154    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1155       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1156       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1157    }
1158
1159    *num_attribs = pos;
1160
1161    return true;
1162 }
1163
1164 /**
1165  * Called via eglCreateContext(), drv->API.CreateContext().
1166  */
1167 static _EGLContext *
1168 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1169                     _EGLContext *share_list, const EGLint *attrib_list)
1170 {
1171    struct dri2_egl_context *dri2_ctx;
1172    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1173    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1174    __DRIcontext *shared =
1175       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1176    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1177    const __DRIconfig *dri_config;
1178    int api;
1179    unsigned error;
1180    unsigned num_attribs = NUM_ATTRIBS;
1181    uint32_t ctx_attribs[NUM_ATTRIBS];
1182
1183    (void) drv;
1184
1185    dri2_ctx = malloc(sizeof *dri2_ctx);
1186    if (!dri2_ctx) {
1187       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1188       return NULL;
1189    }
1190
1191    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1192       goto cleanup;
1193
1194    /* The EGL_EXT_create_context_robustness spec says:
1195     *
1196     *    "Add to the eglCreateContext context creation errors: [...]
1197     *
1198     *     * If the reset notification behavior of <share_context> and the
1199     *       newly created context are different then an EGL_BAD_MATCH error is
1200     *       generated."
1201     */
1202    if (share_list && share_list->ResetNotificationStrategy !=
1203                      dri2_ctx->base.ResetNotificationStrategy) {
1204       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1205       goto cleanup;
1206    }
1207
1208    /* The EGL_KHR_create_context_no_error spec says:
1209     *
1210     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1211     *    used to create <share_context> does not match the value of
1212     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1213     */
1214    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1215       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1216       goto cleanup;
1217    }
1218
1219    switch (dri2_ctx->base.ClientAPI) {
1220    case EGL_OPENGL_ES_API:
1221       switch (dri2_ctx->base.ClientMajorVersion) {
1222       case 1:
1223          api = __DRI_API_GLES;
1224          break;
1225       case 2:
1226          api = __DRI_API_GLES2;
1227          break;
1228       case 3:
1229          api = __DRI_API_GLES3;
1230          break;
1231       default:
1232          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1233          free(dri2_ctx);
1234          return NULL;
1235       }
1236       break;
1237    case EGL_OPENGL_API:
1238       if ((dri2_ctx->base.ClientMajorVersion >= 4
1239            || (dri2_ctx->base.ClientMajorVersion == 3
1240                && dri2_ctx->base.ClientMinorVersion >= 2))
1241           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1242          api = __DRI_API_OPENGL_CORE;
1243       else
1244          api = __DRI_API_OPENGL;
1245       break;
1246    default:
1247       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1248       free(dri2_ctx);
1249       return NULL;
1250    }
1251
1252    if (conf != NULL) {
1253       /* The config chosen here isn't necessarily
1254        * used for surfaces later.
1255        * A pixmap surface will use the single config.
1256        * This opportunity depends on disabling the
1257        * doubleBufferMode check in
1258        * src/mesa/main/context.c:check_compatible()
1259        */
1260       if (dri2_config->dri_config[1][0])
1261          dri_config = dri2_config->dri_config[1][0];
1262       else
1263          dri_config = dri2_config->dri_config[0][0];
1264    }
1265    else
1266       dri_config = NULL;
1267
1268    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1269                                   &num_attribs))
1270       goto cleanup;
1271
1272    if (dri2_dpy->image_driver) {
1273       dri2_ctx->dri_context =
1274          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1275                                                       api,
1276                                                       dri_config,
1277                                                       shared,
1278                                                       num_attribs / 2,
1279                                                       ctx_attribs,
1280                                                       & error,
1281                                                       dri2_ctx);
1282       dri2_create_context_attribs_error(error);
1283    } else if (dri2_dpy->dri2) {
1284       if (dri2_dpy->dri2->base.version >= 3) {
1285          dri2_ctx->dri_context =
1286             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1287                                                  api,
1288                                                  dri_config,
1289                                                  shared,
1290                                                  num_attribs / 2,
1291                                                  ctx_attribs,
1292                                                  & error,
1293                                                  dri2_ctx);
1294          dri2_create_context_attribs_error(error);
1295       } else {
1296          dri2_ctx->dri_context =
1297             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1298                                                    api,
1299                                                    dri_config,
1300                                                    shared,
1301                                                    dri2_ctx);
1302       }
1303    } else {
1304       assert(dri2_dpy->swrast);
1305       if (dri2_dpy->swrast->base.version >= 3) {
1306          dri2_ctx->dri_context =
1307             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1308                                                    api,
1309                                                    dri_config,
1310                                                    shared,
1311                                                    num_attribs / 2,
1312                                                    ctx_attribs,
1313                                                    & error,
1314                                                    dri2_ctx);
1315          dri2_create_context_attribs_error(error);
1316       } else {
1317          dri2_ctx->dri_context =
1318             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1319                                                      api,
1320                                                      dri_config,
1321                                                      shared,
1322                                                      dri2_ctx);
1323       }
1324    }
1325
1326    if (!dri2_ctx->dri_context)
1327       goto cleanup;
1328
1329    return &dri2_ctx->base;
1330
1331  cleanup:
1332    free(dri2_ctx);
1333    return NULL;
1334 }
1335
1336 /**
1337  * Called via eglDestroyContext(), drv->API.DestroyContext().
1338  */
1339 static EGLBoolean
1340 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1341 {
1342    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1343    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1344
1345    if (_eglPutContext(ctx)) {
1346       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1347       free(dri2_ctx);
1348    }
1349
1350    return EGL_TRUE;
1351 }
1352
1353 EGLBoolean
1354 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1355         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1356 {
1357    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1358    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1359
1360    dri2_surf->out_fence_fd = -1;
1361    dri2_surf->enable_out_fence = false;
1362    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1363        dri2_dpy->fence->get_capabilities &&
1364        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1365         __DRI_FENCE_CAP_NATIVE_FD)) {
1366       dri2_surf->enable_out_fence = enable_out_fence;
1367    }
1368
1369    return _eglInitSurface(surf, disp, type, conf, attrib_list);
1370 }
1371
1372 static void
1373 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1374 {
1375    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1376
1377    if (dri2_surf->out_fence_fd >= 0)
1378       close(dri2_surf->out_fence_fd);
1379
1380    dri2_surf->out_fence_fd = fence_fd;
1381 }
1382
1383 void
1384 dri2_fini_surface(_EGLSurface *surf)
1385 {
1386    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1387
1388    dri2_surface_set_out_fence_fd(surf, -1);
1389    dri2_surf->enable_out_fence = false;
1390 }
1391
1392 static EGLBoolean
1393 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
1394 {
1395    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1396
1397    if (!_eglPutSurface(surf))
1398       return EGL_TRUE;
1399
1400    return dri2_dpy->vtbl->destroy_surface(drv, disp, surf);
1401 }
1402
1403 static void
1404 dri2_surf_update_fence_fd(_EGLContext *ctx,
1405                           _EGLDisplay *disp, _EGLSurface *surf)
1406 {
1407    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1408    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1409    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1410    int fence_fd = -1;
1411    void *fence;
1412
1413    if (!dri2_surf->enable_out_fence)
1414       return;
1415
1416    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1417    if (fence) {
1418       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1419                                                fence);
1420       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1421    }
1422    dri2_surface_set_out_fence_fd(surf, fence_fd);
1423 }
1424
1425 /**
1426  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1427  */
1428 static EGLBoolean
1429 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1430                   _EGLSurface *rsurf, _EGLContext *ctx)
1431 {
1432    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1433    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1434    _EGLDisplay *old_disp = NULL;
1435    struct dri2_egl_display *old_dri2_dpy = NULL;
1436    _EGLContext *old_ctx;
1437    _EGLSurface *old_dsurf, *old_rsurf;
1438    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1439    __DRIdrawable *ddraw, *rdraw;
1440    __DRIcontext *cctx;
1441    EGLBoolean unbind;
1442
1443    if (!dri2_dpy)
1444       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1445
1446    /* make new bindings */
1447    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1448       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1449       return EGL_FALSE;
1450    }
1451
1452    if (old_ctx) {
1453       old_disp = old_ctx->Resource.Display;
1454       old_dri2_dpy = dri2_egl_display(old_disp);
1455    }
1456
1457    /* flush before context switch */
1458    if (old_ctx)
1459       dri2_gl_flush();
1460
1461    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1462    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1463    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1464
1465    if (old_ctx) {
1466       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1467
1468       if (old_dsurf)
1469          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1470
1471       /* Disable shared buffer mode */
1472       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1473           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1474          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1475       }
1476
1477       dri2_dpy->core->unbindContext(old_cctx);
1478    }
1479
1480    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1481
1482    if (!unbind && !dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1483       /* undo the previous _eglBindContext */
1484       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1485       assert(&dri2_ctx->base == ctx &&
1486              tmp_dsurf == dsurf &&
1487              tmp_rsurf == rsurf);
1488
1489       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1490           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1491          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1492       }
1493
1494       _eglPutSurface(dsurf);
1495       _eglPutSurface(rsurf);
1496       _eglPutContext(ctx);
1497
1498       _eglPutSurface(old_dsurf);
1499       _eglPutSurface(old_rsurf);
1500       _eglPutContext(old_ctx);
1501
1502       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1503        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1504        * as EGL_SUCCESS.
1505        */
1506       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1507    }
1508
1509    dri2_destroy_surface(drv, disp, old_dsurf);
1510    dri2_destroy_surface(drv, disp, old_rsurf);
1511
1512    if (!unbind)
1513       dri2_dpy->ref_count++;
1514
1515    if (old_ctx) {
1516       dri2_destroy_context(drv, disp, old_ctx);
1517       dri2_display_release(old_disp);
1518    }
1519
1520    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1521        dri2_dpy->vtbl->set_shared_buffer_mode) {
1522       /* Always update the shared buffer mode. This is obviously needed when
1523        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1524        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1525        * case where external non-EGL API may have changed window's shared
1526        * buffer mode since we last saw it.
1527        */
1528       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1529       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1530    }
1531
1532    return EGL_TRUE;
1533 }
1534
1535 __DRIdrawable *
1536 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1537 {
1538    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1539
1540    return dri2_surf->dri_drawable;
1541 }
1542
1543 /*
1544  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1545  */
1546 static _EGLProc
1547 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1548 {
1549    return _glapi_get_proc_address(procname);
1550 }
1551
1552 static _EGLSurface*
1553 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
1554                            _EGLConfig *conf, void *native_window,
1555                            const EGLint *attrib_list)
1556 {
1557    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1558    return dri2_dpy->vtbl->create_window_surface(drv, disp, conf, native_window,
1559                                                 attrib_list);
1560 }
1561
1562 static _EGLSurface*
1563 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
1564                            _EGLConfig *conf, void *native_pixmap,
1565                            const EGLint *attrib_list)
1566 {
1567    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1568    return dri2_dpy->vtbl->create_pixmap_surface(drv, disp, conf, native_pixmap,
1569                                                 attrib_list);
1570 }
1571
1572 static _EGLSurface*
1573 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
1574                            _EGLConfig *conf, const EGLint *attrib_list)
1575 {
1576    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1577    return dri2_dpy->vtbl->create_pbuffer_surface(drv, disp, conf, attrib_list);
1578 }
1579
1580 static EGLBoolean
1581 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1582                    EGLint interval)
1583 {
1584    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1585    if (!dri2_dpy->vtbl->swap_interval)
1586       return EGL_TRUE;
1587    return dri2_dpy->vtbl->swap_interval(drv, disp, surf, interval);
1588 }
1589
1590 /**
1591  * Asks the client API to flush any rendering to the drawable so that we can
1592  * do our swapbuffers.
1593  */
1594 void
1595 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1596 {
1597    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1598    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1599
1600    if (dri2_dpy->flush) {
1601       if (dri2_dpy->flush->base.version >= 4) {
1602          /* We know there's a current context because:
1603           *
1604           *     "If surface is not bound to the calling thread’s current
1605           *      context, an EGL_BAD_SURFACE error is generated."
1606          */
1607          _EGLContext *ctx = _eglGetCurrentContext();
1608          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1609
1610          /* From the EGL 1.4 spec (page 52):
1611           *
1612           *     "The contents of ancillary buffers are always undefined
1613           *      after calling eglSwapBuffers."
1614           */
1615          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1616                                            dri_drawable,
1617                                            __DRI2_FLUSH_DRAWABLE |
1618                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1619                                            __DRI2_THROTTLE_SWAPBUFFER);
1620       } else {
1621          dri2_dpy->flush->flush(dri_drawable);
1622       }
1623    }
1624 }
1625
1626 static EGLBoolean
1627 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
1628 {
1629    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1630    _EGLContext *ctx = _eglGetCurrentContext();
1631
1632    if (ctx && surf)
1633       dri2_surf_update_fence_fd(ctx, disp, surf);
1634    return dri2_dpy->vtbl->swap_buffers(drv, disp, surf);
1635 }
1636
1637 static EGLBoolean
1638 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *disp,
1639                               _EGLSurface *surf,
1640                               const EGLint *rects, EGLint n_rects)
1641 {
1642    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1643    _EGLContext *ctx = _eglGetCurrentContext();
1644
1645    if (ctx && surf)
1646       dri2_surf_update_fence_fd(ctx, disp, surf);
1647    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, disp, surf,
1648                                                    rects, n_rects);
1649 }
1650
1651 static EGLBoolean
1652 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1653                          EGLint numRects, const EGLint *rects)
1654 {
1655    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1656    return dri2_dpy->vtbl->swap_buffers_region(drv, disp, surf, numRects, rects);
1657 }
1658
1659 static EGLBoolean
1660 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1661                        EGLint *rects, EGLint n_rects)
1662 {
1663    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1664    return dri2_dpy->vtbl->set_damage_region(drv, disp, surf, rects, n_rects);
1665 }
1666
1667 static EGLBoolean
1668 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1669                      EGLint x, EGLint y, EGLint width, EGLint height)
1670 {
1671    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1672    return dri2_dpy->vtbl->post_sub_buffer(drv, disp, surf, x, y, width, height);
1673 }
1674
1675 static EGLBoolean
1676 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1677                   void *native_pixmap_target)
1678 {
1679    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1680    return dri2_dpy->vtbl->copy_buffers(drv, disp, surf, native_pixmap_target);
1681 }
1682
1683 static EGLint
1684 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
1685 {
1686    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1687    return dri2_dpy->vtbl->query_buffer_age(drv, disp, surf);
1688 }
1689
1690 static EGLBoolean
1691 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1692 {
1693    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1694    _EGLSurface *surf = ctx->DrawSurface;
1695    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1696
1697    (void) drv;
1698
1699    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1700     * we need to copy fake to real here.*/
1701
1702    if (dri2_dpy->flush != NULL)
1703       dri2_dpy->flush->flush(dri_drawable);
1704
1705    return EGL_TRUE;
1706 }
1707
1708 static EGLBoolean
1709 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1710 {
1711    (void) drv;
1712    (void) disp;
1713
1714    if (engine != EGL_CORE_NATIVE_ENGINE)
1715       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1716    /* glXWaitX(); */
1717
1718    return EGL_TRUE;
1719 }
1720
1721 static EGLBoolean
1722 dri2_bind_tex_image(_EGLDriver *drv,
1723                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1724 {
1725    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1726    struct dri2_egl_context *dri2_ctx;
1727    _EGLContext *ctx;
1728    GLint format, target;
1729    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1730
1731    ctx = _eglGetCurrentContext();
1732    dri2_ctx = dri2_egl_context(ctx);
1733
1734    if (!_eglBindTexImage(drv, disp, surf, buffer))
1735       return EGL_FALSE;
1736
1737    switch (surf->TextureFormat) {
1738    case EGL_TEXTURE_RGB:
1739       format = __DRI_TEXTURE_FORMAT_RGB;
1740       break;
1741    case EGL_TEXTURE_RGBA:
1742       format = __DRI_TEXTURE_FORMAT_RGBA;
1743       break;
1744    default:
1745       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1746       format = __DRI_TEXTURE_FORMAT_RGBA;
1747    }
1748
1749    switch (surf->TextureTarget) {
1750    case EGL_TEXTURE_2D:
1751       target = GL_TEXTURE_2D;
1752       break;
1753    default:
1754       target = GL_TEXTURE_2D;
1755       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1756    }
1757
1758    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1759                                        target, format,
1760                                        dri_drawable);
1761
1762    return EGL_TRUE;
1763 }
1764
1765 static EGLBoolean
1766 dri2_release_tex_image(_EGLDriver *drv,
1767                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1768 {
1769    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1770    struct dri2_egl_context *dri2_ctx;
1771    _EGLContext *ctx;
1772    GLint  target;
1773    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1774
1775    ctx = _eglGetCurrentContext();
1776    dri2_ctx = dri2_egl_context(ctx);
1777
1778    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1779       return EGL_FALSE;
1780
1781    switch (surf->TextureTarget) {
1782    case EGL_TEXTURE_2D:
1783       target = GL_TEXTURE_2D;
1784       break;
1785    default:
1786       assert(!"missing texture target");
1787    }
1788
1789    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1790        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1791       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1792                                              target, dri_drawable);
1793    }
1794
1795    return EGL_TRUE;
1796 }
1797
1798 static _EGLImage*
1799 dri2_create_image(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx,
1800                   EGLenum target, EGLClientBuffer buffer,
1801                   const EGLint *attr_list)
1802 {
1803    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1804    return dri2_dpy->vtbl->create_image(drv, disp, ctx, target, buffer,
1805                                        attr_list);
1806 }
1807
1808 static _EGLImage *
1809 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1810 {
1811    struct dri2_egl_image *dri2_img;
1812
1813    if (dri_image == NULL) {
1814       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1815       return NULL;
1816    }
1817
1818    dri2_img = malloc(sizeof *dri2_img);
1819    if (!dri2_img) {
1820       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1821       return NULL;
1822    }
1823
1824    _eglInitImage(&dri2_img->base, disp);
1825
1826    dri2_img->dri_image = dri_image;
1827
1828    return &dri2_img->base;
1829 }
1830
1831 /**
1832  * Translate a DRI Image extension error code into an EGL error code.
1833  */
1834 static EGLint
1835 egl_error_from_dri_image_error(int dri_error)
1836 {
1837    switch (dri_error) {
1838    case __DRI_IMAGE_ERROR_SUCCESS:
1839       return EGL_SUCCESS;
1840    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1841       return EGL_BAD_ALLOC;
1842    case __DRI_IMAGE_ERROR_BAD_MATCH:
1843       return EGL_BAD_MATCH;
1844    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1845       return EGL_BAD_PARAMETER;
1846    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1847       return EGL_BAD_ACCESS;
1848    default:
1849       assert(!"unknown dri_error code");
1850       return EGL_BAD_ALLOC;
1851    }
1852 }
1853
1854 static _EGLImage *
1855 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1856                                    EGLClientBuffer buffer,
1857                                    const EGLint *attr_list)
1858 {
1859    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1860    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1861    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1862    __DRIimage *dri_image;
1863
1864    if (renderbuffer == 0) {
1865       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1866       return EGL_NO_IMAGE_KHR;
1867    }
1868
1869    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1870       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1871       return EGL_NO_IMAGE_KHR;
1872    }
1873
1874    if (dri2_dpy->image->base.version >= 17 &&
1875        dri2_dpy->image->createImageFromRenderbuffer2) {
1876       unsigned error = ~0;
1877
1878       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1879                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1880
1881       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1882
1883       if (!dri_image) {
1884          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1885          return EGL_NO_IMAGE_KHR;
1886       }
1887    } else {
1888       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1889                dri2_ctx->dri_context, renderbuffer, NULL);
1890       if (!dri_image) {
1891          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1892          return EGL_NO_IMAGE_KHR;
1893       }
1894    }
1895
1896    return dri2_create_image_from_dri(disp, dri_image);
1897 }
1898
1899 #ifdef HAVE_WAYLAND_PLATFORM
1900
1901 /* This structure describes how a wl_buffer maps to one or more
1902  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1903  * offsets and strides of the planes in the buffer.  This table maps a
1904  * wl_drm format code to a description of the planes in the buffer
1905  * that lets us create a __DRIimage for each of the planes. */
1906
1907 static const struct wl_drm_components_descriptor {
1908    uint32_t dri_components;
1909    EGLint components;
1910    int nplanes;
1911 } wl_drm_components[] = {
1912    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1913    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1914    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1915    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1916    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1917 };
1918
1919 static _EGLImage *
1920 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1921                                     EGLClientBuffer _buffer,
1922                                     const EGLint *attr_list)
1923 {
1924    struct wl_drm_buffer *buffer;
1925    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1926    const struct wl_drm_components_descriptor *f;
1927    __DRIimage *dri_image;
1928    _EGLImageAttribs attrs;
1929    int32_t plane;
1930
1931    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1932                                    (struct wl_resource *) _buffer);
1933    if (!buffer)
1934        return NULL;
1935
1936    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1937       return NULL;
1938
1939    plane = attrs.PlaneWL;
1940    f = buffer->driver_format;
1941    if (plane < 0 || plane >= f->nplanes) {
1942       _eglError(EGL_BAD_PARAMETER,
1943                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1944       return NULL;
1945    }
1946
1947    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1948    if (dri_image == NULL && plane == 0)
1949       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
1950    if (dri_image == NULL) {
1951       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1952       return NULL;
1953    }
1954
1955    return dri2_create_image_from_dri(disp, dri_image);
1956 }
1957 #endif
1958
1959 static EGLBoolean
1960 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
1961                               EGLuint64KHR *ust, EGLuint64KHR *msc,
1962                               EGLuint64KHR *sbc)
1963 {
1964    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1965    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
1966 }
1967
1968 /**
1969  * Set the error code after a call to
1970  * dri2_egl_image::dri_image::createImageFromTexture.
1971  */
1972 static void
1973 dri2_create_image_khr_texture_error(int dri_error)
1974 {
1975    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
1976
1977    if (egl_error != EGL_SUCCESS)
1978       _eglError(egl_error, "dri2_create_image_khr_texture");
1979 }
1980
1981 static _EGLImage *
1982 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
1983                                    EGLenum target,
1984                                    EGLClientBuffer buffer,
1985                                    const EGLint *attr_list)
1986 {
1987    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1988    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1989    struct dri2_egl_image *dri2_img;
1990    GLuint texture = (GLuint) (uintptr_t) buffer;
1991    _EGLImageAttribs attrs;
1992    GLuint depth;
1993    GLenum gl_target;
1994    unsigned error;
1995
1996    if (texture == 0) {
1997       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1998       return EGL_NO_IMAGE_KHR;
1999    }
2000
2001    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2002       return EGL_NO_IMAGE_KHR;
2003
2004    switch (target) {
2005    case EGL_GL_TEXTURE_2D_KHR:
2006       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2007          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2008          return EGL_NO_IMAGE_KHR;
2009       }
2010       depth = 0;
2011       gl_target = GL_TEXTURE_2D;
2012       break;
2013    case EGL_GL_TEXTURE_3D_KHR:
2014       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2015          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2016          return EGL_NO_IMAGE_KHR;
2017       }
2018
2019       depth = attrs.GLTextureZOffset;
2020       gl_target = GL_TEXTURE_3D;
2021       break;
2022    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2023    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2024    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2025    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2026    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2027    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2028       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2029          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2030          return EGL_NO_IMAGE_KHR;
2031       }
2032
2033       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2034       gl_target = GL_TEXTURE_CUBE_MAP;
2035       break;
2036    default:
2037       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2038       return EGL_NO_IMAGE_KHR;
2039    }
2040
2041    dri2_img = malloc(sizeof *dri2_img);
2042    if (!dri2_img) {
2043       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2044       return EGL_NO_IMAGE_KHR;
2045    }
2046
2047    _eglInitImage(&dri2_img->base, disp);
2048
2049    dri2_img->dri_image =
2050       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2051                                               gl_target,
2052                                               texture,
2053                                               depth,
2054                                               attrs.GLTextureLevel,
2055                                               &error,
2056                                               dri2_img);
2057    dri2_create_image_khr_texture_error(error);
2058
2059    if (!dri2_img->dri_image) {
2060       free(dri2_img);
2061       return EGL_NO_IMAGE_KHR;
2062    }
2063    return &dri2_img->base;
2064 }
2065
2066 static EGLBoolean
2067 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2068                    EGLint attribute, EGLint *value)
2069 {
2070    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2071    if (!dri2_dpy->vtbl->query_surface)
2072       return _eglQuerySurface(drv, disp, surf, attribute, value);
2073    return dri2_dpy->vtbl->query_surface(drv, disp, surf, attribute, value);
2074 }
2075
2076 static struct wl_buffer*
2077 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *disp,
2078                                       _EGLImage *img)
2079 {
2080    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2081    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, disp, img);
2082 }
2083
2084 #ifdef HAVE_LIBDRM
2085 static _EGLImage *
2086 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2087                                   EGLClientBuffer buffer, const EGLint *attr_list)
2088 {
2089    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2090    EGLint format, name, pitch;
2091    _EGLImageAttribs attrs;
2092    __DRIimage *dri_image;
2093
2094    name = (EGLint) (uintptr_t) buffer;
2095
2096    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2097       return NULL;
2098
2099    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2100        attrs.DRMBufferStrideMESA <= 0) {
2101       _eglError(EGL_BAD_PARAMETER,
2102                 "bad width, height or stride");
2103       return NULL;
2104    }
2105
2106    switch (attrs.DRMBufferFormatMESA) {
2107    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2108       format = __DRI_IMAGE_FORMAT_ARGB8888;
2109       pitch = attrs.DRMBufferStrideMESA;
2110       break;
2111    default:
2112       _eglError(EGL_BAD_PARAMETER,
2113                 "dri2_create_image_khr: unsupported pixmap depth");
2114       return NULL;
2115    }
2116
2117    dri_image =
2118       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2119                                            attrs.Width,
2120                                            attrs.Height,
2121                                            format,
2122                                            name,
2123                                            pitch,
2124                                            NULL);
2125
2126    return dri2_create_image_from_dri(disp, dri_image);
2127 }
2128
2129 static EGLBoolean
2130 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2131 {
2132    /**
2133      * The spec says:
2134      *
2135      * "Required attributes and their values are as follows:
2136      *
2137      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2138      *
2139      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2140      *    by drm_fourcc.h and used as the pixel_format parameter of the
2141      *    drm_mode_fb_cmd2 ioctl."
2142      *
2143      * and
2144      *
2145      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2146      *    incomplete, EGL_BAD_PARAMETER is generated."
2147      */
2148    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2149        !attrs->DMABufFourCC.IsPresent)
2150       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2151
2152    /**
2153     * Also:
2154     *
2155     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2156     *  specified for a plane's pitch or offset isn't supported by EGL,
2157     *  EGL_BAD_ACCESS is generated."
2158     */
2159    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2160       if (attrs->DMABufPlanePitches[i].IsPresent &&
2161           attrs->DMABufPlanePitches[i].Value <= 0)
2162          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2163    }
2164
2165    /**
2166     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2167     * attribute values may be given.
2168     *
2169     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2170     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2171     */
2172    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2173       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2174           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2175          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2176    }
2177
2178    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2179     * mandate it, we only accept the same modifier across all planes. */
2180    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2181       if (attrs->DMABufPlaneFds[i].IsPresent) {
2182          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2183                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2184              (attrs->DMABufPlaneModifiersLo[0].Value !=
2185                attrs->DMABufPlaneModifiersLo[i].Value) ||
2186              (attrs->DMABufPlaneModifiersHi[0].Value !=
2187                attrs->DMABufPlaneModifiersHi[i].Value))
2188             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2189       }
2190    }
2191
2192    return EGL_TRUE;
2193 }
2194
2195 /* Returns the total number of planes for the format or zero if it isn't a
2196  * valid fourcc format.
2197  */
2198 static unsigned
2199 dri2_num_fourcc_format_planes(EGLint format)
2200 {
2201    switch (format) {
2202    case DRM_FORMAT_R8:
2203    case DRM_FORMAT_RG88:
2204    case DRM_FORMAT_GR88:
2205    case DRM_FORMAT_R16:
2206    case DRM_FORMAT_GR1616:
2207    case DRM_FORMAT_RGB332:
2208    case DRM_FORMAT_BGR233:
2209    case DRM_FORMAT_XRGB4444:
2210    case DRM_FORMAT_XBGR4444:
2211    case DRM_FORMAT_RGBX4444:
2212    case DRM_FORMAT_BGRX4444:
2213    case DRM_FORMAT_ARGB4444:
2214    case DRM_FORMAT_ABGR4444:
2215    case DRM_FORMAT_RGBA4444:
2216    case DRM_FORMAT_BGRA4444:
2217    case DRM_FORMAT_XRGB1555:
2218    case DRM_FORMAT_XBGR1555:
2219    case DRM_FORMAT_RGBX5551:
2220    case DRM_FORMAT_BGRX5551:
2221    case DRM_FORMAT_ARGB1555:
2222    case DRM_FORMAT_ABGR1555:
2223    case DRM_FORMAT_RGBA5551:
2224    case DRM_FORMAT_BGRA5551:
2225    case DRM_FORMAT_RGB565:
2226    case DRM_FORMAT_BGR565:
2227    case DRM_FORMAT_RGB888:
2228    case DRM_FORMAT_BGR888:
2229    case DRM_FORMAT_XRGB8888:
2230    case DRM_FORMAT_XBGR8888:
2231    case DRM_FORMAT_RGBX8888:
2232    case DRM_FORMAT_BGRX8888:
2233    case DRM_FORMAT_ARGB8888:
2234    case DRM_FORMAT_ABGR8888:
2235    case DRM_FORMAT_RGBA8888:
2236    case DRM_FORMAT_BGRA8888:
2237    case DRM_FORMAT_XRGB2101010:
2238    case DRM_FORMAT_XBGR2101010:
2239    case DRM_FORMAT_RGBX1010102:
2240    case DRM_FORMAT_BGRX1010102:
2241    case DRM_FORMAT_ARGB2101010:
2242    case DRM_FORMAT_ABGR2101010:
2243    case DRM_FORMAT_RGBA1010102:
2244    case DRM_FORMAT_BGRA1010102:
2245    case DRM_FORMAT_YUYV:
2246    case DRM_FORMAT_YVYU:
2247    case DRM_FORMAT_UYVY:
2248    case DRM_FORMAT_VYUY:
2249    case DRM_FORMAT_AYUV:
2250       return 1;
2251
2252    case DRM_FORMAT_NV12:
2253    case DRM_FORMAT_NV21:
2254    case DRM_FORMAT_NV16:
2255    case DRM_FORMAT_NV61:
2256    case DRM_FORMAT_P010:
2257    case DRM_FORMAT_P012:
2258    case DRM_FORMAT_P016:
2259       return 2;
2260
2261    case DRM_FORMAT_YUV410:
2262    case DRM_FORMAT_YVU410:
2263    case DRM_FORMAT_YUV411:
2264    case DRM_FORMAT_YVU411:
2265    case DRM_FORMAT_YUV420:
2266    case DRM_FORMAT_YVU420:
2267    case DRM_FORMAT_YUV422:
2268    case DRM_FORMAT_YVU422:
2269    case DRM_FORMAT_YUV444:
2270    case DRM_FORMAT_YVU444:
2271       return 3;
2272
2273    default:
2274       return 0;
2275    }
2276 }
2277
2278 /* Returns the total number of file descriptors. Zero indicates an error. */
2279 static unsigned
2280 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2281 {
2282    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2283    if (plane_n == 0) {
2284       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2285       return 0;
2286    }
2287
2288    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2289       /**
2290        * The modifiers extension spec says:
2291        *
2292        * "Modifiers may modify any attribute of a buffer import, including
2293        *  but not limited to adding extra planes to a format which
2294        *  otherwise does not have those planes. As an example, a modifier
2295        *  may add a plane for an external compression buffer to a
2296        *  single-plane format. The exact meaning and effect of any
2297        *  modifier is canonically defined by drm_fourcc.h, not as part of
2298        *  this extension."
2299        */
2300       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2301           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2302          plane_n = i + 1;
2303       }
2304    }
2305
2306    /**
2307      * The spec says:
2308      *
2309      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2310      *    incomplete, EGL_BAD_PARAMETER is generated."
2311      */
2312    for (unsigned i = 0; i < plane_n; ++i) {
2313       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2314           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2315           !attrs->DMABufPlanePitches[i].IsPresent) {
2316          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2317          return 0;
2318       }
2319    }
2320
2321    /**
2322     * The spec also says:
2323     *
2324     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2325     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2326     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2327     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2328     */
2329    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2330       if (attrs->DMABufPlaneFds[i].IsPresent ||
2331           attrs->DMABufPlaneOffsets[i].IsPresent ||
2332           attrs->DMABufPlanePitches[i].IsPresent) {
2333          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2334          return 0;
2335       }
2336    }
2337
2338    return plane_n;
2339 }
2340
2341 static EGLBoolean
2342 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2343                             EGLint max, EGLint *formats, EGLint *count)
2344 {
2345    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2346    if (max < 0 || (max > 0 && formats == NULL))
2347       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2348
2349    if (dri2_dpy->image->base.version < 15 ||
2350        dri2_dpy->image->queryDmaBufFormats == NULL)
2351       return EGL_FALSE;
2352
2353    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2354                                             formats, count))
2355       return EGL_FALSE;
2356
2357    if (max > 0) {
2358       /* Assert that all of the formats returned are actually fourcc formats.
2359        * Some day, if we want the internal interface function to be able to
2360        * return the fake fourcc formats defined in dri_interface.h, we'll have
2361        * to do something more clever here to pair the list down to just real
2362        * fourcc formats so that we don't leak the fake internal ones.
2363        */
2364       for (int i = 0; i < *count; i++) {
2365          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2366       }
2367    }
2368
2369    return EGL_TRUE;
2370 }
2371
2372 static EGLBoolean
2373 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2374                              EGLint max, EGLuint64KHR *modifiers,
2375                              EGLBoolean *external_only, EGLint *count)
2376 {
2377    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2378
2379    if (dri2_num_fourcc_format_planes(format) == 0)
2380       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2381
2382    if (max < 0)
2383       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2384
2385    if (max > 0 && modifiers == NULL)
2386       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2387
2388    if (dri2_dpy->image->base.version < 15 ||
2389        dri2_dpy->image->queryDmaBufModifiers == NULL)
2390       return EGL_FALSE;
2391
2392    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2393                                              max, modifiers,
2394                                              (unsigned int *) external_only,
2395                                              count) == false)
2396       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2397
2398    return EGL_TRUE;
2399 }
2400
2401 /**
2402  * The spec says:
2403  *
2404  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2405  *  EGL will take a reference to the dma_buf(s) which it will release at any
2406  *  time while the EGLDisplay is initialized. It is the responsibility of the
2407  *  application to close the dma_buf file descriptors."
2408  *
2409  * Therefore we must never close or otherwise modify the file descriptors.
2410  */
2411 _EGLImage *
2412 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2413                           EGLClientBuffer buffer, const EGLint *attr_list)
2414 {
2415    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2416    _EGLImage *res;
2417    _EGLImageAttribs attrs;
2418    __DRIimage *dri_image;
2419    unsigned num_fds;
2420    int fds[DMA_BUF_MAX_PLANES];
2421    int pitches[DMA_BUF_MAX_PLANES];
2422    int offsets[DMA_BUF_MAX_PLANES];
2423    uint64_t modifier;
2424    bool has_modifier = false;
2425    unsigned error;
2426
2427    /**
2428     * The spec says:
2429     *
2430     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2431     *     error EGL_BAD_PARAMETER is generated."
2432     */
2433    if (buffer != NULL) {
2434       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2435       return NULL;
2436    }
2437
2438    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2439       return NULL;
2440
2441    if (!dri2_check_dma_buf_attribs(&attrs))
2442       return NULL;
2443
2444    num_fds = dri2_check_dma_buf_format(&attrs);
2445    if (!num_fds)
2446       return NULL;
2447
2448    for (unsigned i = 0; i < num_fds; ++i) {
2449       fds[i] = attrs.DMABufPlaneFds[i].Value;
2450       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2451       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2452    }
2453
2454    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2455     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2456     * attrs.DMABufPlaneModifiersHi[0] */
2457    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2458       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2459                                       attrs.DMABufPlaneModifiersLo[0].Value);
2460       has_modifier = true;
2461    }
2462
2463    if (has_modifier) {
2464       if (dri2_dpy->image->base.version < 15 ||
2465           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2466          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2467          return EGL_NO_IMAGE_KHR;
2468       }
2469       dri_image =
2470          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2471             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2472             modifier, fds, num_fds, pitches, offsets,
2473             attrs.DMABufYuvColorSpaceHint.Value,
2474             attrs.DMABufSampleRangeHint.Value,
2475             attrs.DMABufChromaHorizontalSiting.Value,
2476             attrs.DMABufChromaVerticalSiting.Value,
2477             &error,
2478             NULL);
2479    }
2480    else {
2481       dri_image =
2482          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2483             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2484             fds, num_fds, pitches, offsets,
2485             attrs.DMABufYuvColorSpaceHint.Value,
2486             attrs.DMABufSampleRangeHint.Value,
2487             attrs.DMABufChromaHorizontalSiting.Value,
2488             attrs.DMABufChromaVerticalSiting.Value,
2489             &error,
2490             NULL);
2491    }
2492    dri2_create_image_khr_texture_error(error);
2493
2494    if (!dri_image)
2495       return EGL_NO_IMAGE_KHR;
2496
2497    res = dri2_create_image_from_dri(disp, dri_image);
2498
2499    return res;
2500 }
2501 static _EGLImage *
2502 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2503                            const EGLint *attr_list)
2504 {
2505    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2506    struct dri2_egl_image *dri2_img;
2507    _EGLImageAttribs attrs;
2508    unsigned int dri_use, valid_mask;
2509    int format;
2510
2511    (void) drv;
2512
2513    if (!attr_list) {
2514       _eglError(EGL_BAD_PARAMETER, __func__);
2515       return EGL_NO_IMAGE_KHR;
2516    }
2517
2518    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2519       return EGL_NO_IMAGE_KHR;
2520
2521    if (attrs.Width <= 0 || attrs.Height <= 0) {
2522       _eglError(EGL_BAD_PARAMETER, __func__);
2523       return EGL_NO_IMAGE_KHR;
2524    }
2525
2526    switch (attrs.DRMBufferFormatMESA) {
2527    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2528       format = __DRI_IMAGE_FORMAT_ARGB8888;
2529       break;
2530    default:
2531       _eglError(EGL_BAD_PARAMETER, __func__);
2532       return EGL_NO_IMAGE_KHR;
2533    }
2534
2535    valid_mask =
2536       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2537       EGL_DRM_BUFFER_USE_SHARE_MESA |
2538       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2539    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2540       _eglError(EGL_BAD_PARAMETER, __func__);
2541       return EGL_NO_IMAGE_KHR;
2542    }
2543
2544    dri_use = 0;
2545    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2546       dri_use |= __DRI_IMAGE_USE_SHARE;
2547    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2548       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2549    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2550       dri_use |= __DRI_IMAGE_USE_CURSOR;
2551
2552    dri2_img = malloc(sizeof *dri2_img);
2553    if (!dri2_img) {
2554       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2555       return EGL_NO_IMAGE_KHR;
2556    }
2557
2558    _eglInitImage(&dri2_img->base, disp);
2559
2560    dri2_img->dri_image =
2561       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2562                                    attrs.Width, attrs.Height,
2563                                    format, dri_use, dri2_img);
2564    if (dri2_img->dri_image == NULL) {
2565       free(dri2_img);
2566        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2567       return EGL_NO_IMAGE_KHR;
2568    }
2569
2570    return &dri2_img->base;
2571 }
2572
2573 static EGLBoolean
2574 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2575                           EGLint *name, EGLint *handle, EGLint *stride)
2576 {
2577    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2578    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2579
2580    (void) drv;
2581
2582    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2583                                             __DRI_IMAGE_ATTRIB_NAME, name))
2584       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2585
2586    if (handle)
2587       dri2_dpy->image->queryImage(dri2_img->dri_image,
2588                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2589
2590    if (stride)
2591       dri2_dpy->image->queryImage(dri2_img->dri_image,
2592                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2593
2594    return EGL_TRUE;
2595 }
2596
2597 /**
2598  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
2599
2600  * The spec provides a boolean return for the driver to reject exporting for
2601  * basically any reason, but doesn't specify any particular error cases.  For
2602  * now, we just fail if we don't have a DRM fourcc for the format.
2603  */
2604 static bool
2605 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
2606 {
2607    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2608    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2609    EGLint fourcc;
2610
2611    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
2612                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
2613       return false;
2614    }
2615
2616    return true;
2617 }
2618
2619 static EGLBoolean
2620 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2621                                      _EGLImage *img,
2622                                      EGLint *fourcc, EGLint *nplanes,
2623                                      EGLuint64KHR *modifiers)
2624 {
2625    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2626    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2627
2628    (void) drv;
2629
2630    if (!dri2_can_export_dma_buf_image(disp, img))
2631       return EGL_FALSE;
2632
2633    if (nplanes)
2634       dri2_dpy->image->queryImage(dri2_img->dri_image,
2635                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2636    if (fourcc)
2637       dri2_dpy->image->queryImage(dri2_img->dri_image,
2638                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2639
2640    if (modifiers)
2641       *modifiers = 0;
2642
2643    return EGL_TRUE;
2644 }
2645
2646 static EGLBoolean
2647 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2648                                int *fds, EGLint *strides, EGLint *offsets)
2649 {
2650    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2651    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2652
2653    (void) drv;
2654
2655    if (!dri2_can_export_dma_buf_image(disp, img))
2656       return EGL_FALSE;
2657
2658    /* rework later to provide multiple fds/strides/offsets */
2659    if (fds)
2660       dri2_dpy->image->queryImage(dri2_img->dri_image,
2661                                   __DRI_IMAGE_ATTRIB_FD, fds);
2662
2663    if (strides)
2664       dri2_dpy->image->queryImage(dri2_img->dri_image,
2665                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2666
2667    if (offsets) {
2668       int img_offset;
2669       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2670                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2671       if (ret)
2672          offsets[0] = img_offset;
2673       else
2674          offsets[0] = 0;
2675    }
2676
2677    return EGL_TRUE;
2678 }
2679
2680 #endif
2681
2682 _EGLImage *
2683 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2684                       _EGLContext *ctx, EGLenum target,
2685                       EGLClientBuffer buffer, const EGLint *attr_list)
2686 {
2687    (void) drv;
2688
2689    switch (target) {
2690    case EGL_GL_TEXTURE_2D_KHR:
2691    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2692    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2693    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2694    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2695    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2696    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2697    case EGL_GL_TEXTURE_3D_KHR:
2698       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2699    case EGL_GL_RENDERBUFFER_KHR:
2700       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2701 #ifdef HAVE_LIBDRM
2702    case EGL_DRM_BUFFER_MESA:
2703       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2704    case EGL_LINUX_DMA_BUF_EXT:
2705       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2706 #endif
2707 #ifdef HAVE_WAYLAND_PLATFORM
2708    case EGL_WAYLAND_BUFFER_WL:
2709       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2710 #endif
2711    default:
2712       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2713       return EGL_NO_IMAGE_KHR;
2714    }
2715 }
2716
2717 static EGLBoolean
2718 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2719 {
2720    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2721    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2722
2723    (void) drv;
2724
2725    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2726    free(dri2_img);
2727
2728    return EGL_TRUE;
2729 }
2730
2731 #ifdef HAVE_WAYLAND_PLATFORM
2732
2733 static void
2734 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2735                          struct wl_drm_buffer *buffer)
2736 {
2737    _EGLDisplay *disp = user_data;
2738    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2739    __DRIimage *img;
2740    int dri_components = 0;
2741
2742    if (fd == -1)
2743       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2744                                                   buffer->width,
2745                                                   buffer->height,
2746                                                   buffer->format,
2747                                                   (int*)&name, 1,
2748                                                   buffer->stride,
2749                                                   buffer->offset,
2750                                                   NULL);
2751    else
2752       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2753                                                 buffer->width,
2754                                                 buffer->height,
2755                                                 buffer->format,
2756                                                 &fd, 1,
2757                                                 buffer->stride,
2758                                                 buffer->offset,
2759                                                 NULL);
2760
2761    if (img == NULL)
2762       return;
2763
2764    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2765
2766    buffer->driver_format = NULL;
2767    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2768       if (wl_drm_components[i].dri_components == dri_components)
2769          buffer->driver_format = &wl_drm_components[i];
2770
2771    if (buffer->driver_format == NULL)
2772       dri2_dpy->image->destroyImage(img);
2773    else
2774       buffer->driver_buffer = img;
2775 }
2776
2777 static void
2778 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2779 {
2780    _EGLDisplay *disp = user_data;
2781    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2782
2783    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2784 }
2785
2786 static EGLBoolean
2787 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2788                              struct wl_display *wl_dpy)
2789 {
2790    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2791    const struct wayland_drm_callbacks wl_drm_callbacks = {
2792       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2793       .reference_buffer = dri2_wl_reference_buffer,
2794       .release_buffer = dri2_wl_release_buffer,
2795       .is_format_supported = dri2_wl_is_format_supported
2796    };
2797    int flags = 0;
2798    uint64_t cap;
2799
2800    (void) drv;
2801
2802    if (dri2_dpy->wl_server_drm)
2803            return EGL_FALSE;
2804
2805    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2806        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2807        dri2_dpy->image->base.version >= 7 &&
2808        dri2_dpy->image->createImageFromFds != NULL)
2809       flags |= WAYLAND_DRM_PRIME;
2810
2811    dri2_dpy->wl_server_drm =
2812            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2813                             &wl_drm_callbacks, disp, flags);
2814
2815    if (!dri2_dpy->wl_server_drm)
2816            return EGL_FALSE;
2817
2818 #ifdef HAVE_DRM_PLATFORM
2819    /* We have to share the wl_drm instance with gbm, so gbm can convert
2820     * wl_buffers to gbm bos. */
2821    if (dri2_dpy->gbm_dri)
2822       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2823 #endif
2824
2825    return EGL_TRUE;
2826 }
2827
2828 static EGLBoolean
2829 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2830                                struct wl_display *wl_dpy)
2831 {
2832    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2833
2834    (void) drv;
2835
2836    if (!dri2_dpy->wl_server_drm)
2837            return EGL_FALSE;
2838
2839    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2840    dri2_dpy->wl_server_drm = NULL;
2841
2842    return EGL_TRUE;
2843 }
2844
2845 static EGLBoolean
2846 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2847                              struct wl_resource *buffer_resource,
2848                              EGLint attribute, EGLint *value)
2849 {
2850    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2851    struct wl_drm_buffer *buffer;
2852    const struct wl_drm_components_descriptor *format;
2853
2854    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2855    if (!buffer)
2856       return EGL_FALSE;
2857
2858    format = buffer->driver_format;
2859    switch (attribute) {
2860    case EGL_TEXTURE_FORMAT:
2861       *value = format->components;
2862       return EGL_TRUE;
2863    case EGL_WIDTH:
2864       *value = buffer->width;
2865       return EGL_TRUE;
2866    case EGL_HEIGHT:
2867       *value = buffer->height;
2868       return EGL_TRUE;
2869    }
2870
2871    return EGL_FALSE;
2872 }
2873 #endif
2874
2875 static void
2876 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2877 {
2878    p_atomic_inc(&sync->refcount);
2879 }
2880
2881 static void
2882 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2883                     struct dri2_egl_sync *dri2_sync)
2884 {
2885    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2886       switch (dri2_sync->base.Type) {
2887       case EGL_SYNC_REUSABLE_KHR:
2888          cnd_destroy(&dri2_sync->cond);
2889          break;
2890       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2891          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2892             close(dri2_sync->base.SyncFd);
2893          break;
2894       default:
2895          break;
2896       }
2897
2898       if (dri2_sync->fence)
2899          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2900
2901       free(dri2_sync);
2902    }
2903 }
2904
2905 static _EGLSync *
2906 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *disp,
2907                  EGLenum type, const EGLAttrib *attrib_list)
2908 {
2909    _EGLContext *ctx = _eglGetCurrentContext();
2910    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2911    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2912    struct dri2_egl_sync *dri2_sync;
2913    EGLint ret;
2914    pthread_condattr_t attr;
2915
2916    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2917    if (!dri2_sync) {
2918       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2919       return NULL;
2920    }
2921
2922    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
2923       free(dri2_sync);
2924       return NULL;
2925    }
2926
2927    switch (type) {
2928    case EGL_SYNC_FENCE_KHR:
2929       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2930       if (!dri2_sync->fence) {
2931          /* Why did it fail? DRI doesn't return an error code, so we emit
2932           * a generic EGL error that doesn't communicate user error.
2933           */
2934          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2935          free(dri2_sync);
2936          return NULL;
2937       }
2938       break;
2939
2940    case EGL_SYNC_CL_EVENT_KHR:
2941       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2942                                  dri2_dpy->dri_screen,
2943                                  dri2_sync->base.CLEvent);
2944       /* this can only happen if the cl_event passed in is invalid. */
2945       if (!dri2_sync->fence) {
2946          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2947          free(dri2_sync);
2948          return NULL;
2949       }
2950
2951       /* the initial status must be "signaled" if the cl_event is signaled */
2952       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2953                                             dri2_sync->fence, 0, 0))
2954          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2955       break;
2956
2957    case EGL_SYNC_REUSABLE_KHR:
2958       /* intialize attr */
2959       ret = pthread_condattr_init(&attr);
2960
2961       if (ret) {
2962          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2963          free(dri2_sync);
2964          return NULL;
2965       }
2966
2967       /* change clock attribute to CLOCK_MONOTONIC */
2968       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2969
2970       if (ret) {
2971          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2972          free(dri2_sync);
2973          return NULL;
2974       }
2975
2976       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2977
2978       if (ret) {
2979          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2980          free(dri2_sync);
2981          return NULL;
2982       }
2983
2984       /* initial status of reusable sync must be "unsignaled" */
2985       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2986       break;
2987
2988    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2989       if (dri2_dpy->fence->create_fence_fd) {
2990          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2991                                     dri2_ctx->dri_context,
2992                                     dri2_sync->base.SyncFd);
2993       }
2994       if (!dri2_sync->fence) {
2995          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2996          free(dri2_sync);
2997          return NULL;
2998       }
2999       break;
3000    }
3001
3002    p_atomic_set(&dri2_sync->refcount, 1);
3003    return &dri2_sync->base;
3004 }
3005
3006 static EGLBoolean
3007 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3008 {
3009    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3010    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3011    EGLint ret = EGL_TRUE;
3012    EGLint err;
3013
3014    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3015     * then unlock all threads possibly blocked by the reusable sync before
3016     * destroying it.
3017     */
3018    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3019        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3020       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3021       /* unblock all threads currently blocked by sync */
3022       err = cnd_broadcast(&dri2_sync->cond);
3023
3024       if (err) {
3025          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3026          ret = EGL_FALSE;
3027       }
3028    }
3029
3030    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3031
3032    return ret;
3033 }
3034
3035 static EGLint
3036 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3037 {
3038    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3039    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3040
3041    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3042
3043    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3044       /* try to retrieve the actual native fence fd.. if rendering is
3045        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3046        */
3047       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3048                                                    dri2_sync->fence);
3049    }
3050
3051    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3052       /* if native fence fd still not created, return an error: */
3053       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3054       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3055    }
3056
3057    return dup(sync->SyncFd);
3058 }
3059
3060 static void
3061 dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *disp,
3062                           EGLSetBlobFuncANDROID set,
3063                           EGLGetBlobFuncANDROID get)
3064 {
3065    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3066    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3067                                    disp->BlobCacheSet,
3068                                    disp->BlobCacheGet);
3069 }
3070
3071 static EGLint
3072 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3073                       EGLint flags, EGLTime timeout)
3074 {
3075    _EGLContext *ctx = _eglGetCurrentContext();
3076    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3077    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3078    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3079    unsigned wait_flags = 0;
3080
3081    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3082
3083    /* The EGL_KHR_fence_sync spec states:
3084     *
3085     *    "If no context is current for the bound API,
3086     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3087     */
3088    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3089       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3090
3091    /* the sync object should take a reference while waiting */
3092    dri2_egl_ref_sync(dri2_sync);
3093
3094    switch (sync->Type) {
3095    case EGL_SYNC_FENCE_KHR:
3096    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3097    case EGL_SYNC_CL_EVENT_KHR:
3098       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3099                                          dri2_sync->fence, wait_flags,
3100                                          timeout))
3101          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3102       else
3103          ret = EGL_TIMEOUT_EXPIRED_KHR;
3104       break;
3105
3106    case EGL_SYNC_REUSABLE_KHR:
3107       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3108           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3109          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3110          dri2_gl_flush();
3111       }
3112
3113       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3114       if (timeout == EGL_FOREVER_KHR) {
3115          mtx_lock(&dri2_sync->mutex);
3116          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3117          mtx_unlock(&dri2_sync->mutex);
3118       } else {
3119          /* if reusable sync has not been yet signaled */
3120          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3121             /* timespecs for cnd_timedwait */
3122             struct timespec current;
3123             struct timespec expire;
3124
3125             /* We override the clock to monotonic when creating the condition
3126              * variable. */
3127             clock_gettime(CLOCK_MONOTONIC, &current);
3128
3129             /* calculating when to expire */
3130             expire.tv_nsec = timeout % 1000000000L;
3131             expire.tv_sec = timeout / 1000000000L;
3132
3133             expire.tv_nsec += current.tv_nsec;
3134             expire.tv_sec += current.tv_sec;
3135
3136             /* expire.nsec now is a number between 0 and 1999999998 */
3137             if (expire.tv_nsec > 999999999L) {
3138                expire.tv_sec++;
3139                expire.tv_nsec -= 1000000000L;
3140             }
3141
3142             mtx_lock(&dri2_sync->mutex);
3143             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3144             mtx_unlock(&dri2_sync->mutex);
3145
3146             if (ret == thrd_busy) {
3147                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3148                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3149                } else {
3150                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3151                   ret = EGL_FALSE;
3152                }
3153             }
3154          }
3155       }
3156       break;
3157   }
3158   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3159
3160   return ret;
3161 }
3162
3163 static EGLBoolean
3164 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3165                       EGLenum mode)
3166 {
3167    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3168    EGLint ret;
3169
3170    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3171       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3172
3173    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3174       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3175
3176    dri2_sync->base.SyncStatus = mode;
3177
3178    if (mode == EGL_SIGNALED_KHR) {
3179       ret = cnd_broadcast(&dri2_sync->cond);
3180
3181       /* fail to broadcast */
3182       if (ret)
3183          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3184    }
3185
3186    return EGL_TRUE;
3187 }
3188
3189 static EGLint
3190 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3191 {
3192    _EGLContext *ctx = _eglGetCurrentContext();
3193    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3194    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3195    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3196
3197    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3198                                      dri2_sync->fence, 0);
3199    return EGL_TRUE;
3200 }
3201
3202 static int
3203 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3204                                struct mesa_glinterop_device_info *out)
3205 {
3206    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3207    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3208
3209    if (!dri2_dpy->interop)
3210       return MESA_GLINTEROP_UNSUPPORTED;
3211
3212    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3213 }
3214
3215 static int
3216 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3217                            struct mesa_glinterop_export_in *in,
3218                            struct mesa_glinterop_export_out *out)
3219 {
3220    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3221    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3222
3223    if (!dri2_dpy->interop)
3224       return MESA_GLINTEROP_UNSUPPORTED;
3225
3226    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3227 }
3228
3229 /**
3230  * This is the main entrypoint into the driver, called by libEGL.
3231  * Gets an _EGLDriver object and init its dispatch table.
3232  */
3233 void
3234 _eglInitDriver(_EGLDriver *dri2_drv)
3235 {
3236    dri2_drv->API.Initialize = dri2_initialize;
3237    dri2_drv->API.Terminate = dri2_terminate;
3238    dri2_drv->API.CreateContext = dri2_create_context;
3239    dri2_drv->API.DestroyContext = dri2_destroy_context;
3240    dri2_drv->API.MakeCurrent = dri2_make_current;
3241    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3242    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3243    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3244    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3245    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3246    dri2_drv->API.WaitClient = dri2_wait_client;
3247    dri2_drv->API.WaitNative = dri2_wait_native;
3248    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3249    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3250    dri2_drv->API.SwapInterval = dri2_swap_interval;
3251    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3252    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3253    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3254    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3255    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3256    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3257    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3258    dri2_drv->API.CreateImageKHR = dri2_create_image;
3259    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3260    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3261    dri2_drv->API.QuerySurface = dri2_query_surface;
3262    dri2_drv->API.QueryDriverName = dri2_query_driver_name;
3263    dri2_drv->API.QueryDriverConfig = dri2_query_driver_config;
3264 #ifdef HAVE_LIBDRM
3265    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3266    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3267    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3268    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3269    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3270    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3271 #endif
3272 #ifdef HAVE_WAYLAND_PLATFORM
3273    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3274    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3275    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3276 #endif
3277    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3278    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3279    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3280    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3281    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3282    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3283    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3284    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3285    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3286    dri2_drv->API.SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs;
3287 }