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    MAYBE_UNUSED _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; i < __DRI_ATTRIB_MAX; ++i) {
 217       if (!dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib, &value))
 218          break;
 219
 220       switch (attrib) {
 221       case __DRI_ATTRIB_RENDER_TYPE:
 222          if (value & __DRI_ATTRIB_RGBA_BIT)
 223             value = EGL_RGB_BUFFER;
 224          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 225             value = EGL_LUMINANCE_BUFFER;
 226          else
 227             return NULL;
 228          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 229          break;
 230
 231       case __DRI_ATTRIB_CONFIG_CAVEAT:
 232          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 233             value = EGL_NON_CONFORMANT_CONFIG;
 234          else if (value & __DRI_ATTRIB_SLOW_BIT)
 235             value = EGL_SLOW_CONFIG;
 236          else
 237             value = EGL_NONE;
 238          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 239          break;
 240
 241       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 242          bind_to_texture_rgb = value;
 243          break;
 244
 245       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 246          bind_to_texture_rgba = value;
 247          break;
 248
 249       case __DRI_ATTRIB_DOUBLE_BUFFER:
 250          double_buffer = value;
 251          break;
 252
 253       case __DRI_ATTRIB_RED_MASK:
 254          dri_masks[0] = value;
 255          break;
 256
 257       case __DRI_ATTRIB_GREEN_MASK:
 258          dri_masks[1] = value;
 259          break;
 260
 261       case __DRI_ATTRIB_BLUE_MASK:
 262          dri_masks[2] = value;
 263          break;
 264
 265       case __DRI_ATTRIB_ALPHA_MASK:
 266          dri_masks[3] = value;
 267          break;
 268
 269       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 270       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 271       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 272       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 273          /* Don't expose visuals with the accumulation buffer. */
 274          if (value > 0)
 275             return NULL;
 276          break;
 277
 278       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 279          srgb = value != 0;
 280          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 281             return NULL;
 282          break;
 283
 284       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 285          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 286                           _EGL_MAX_PBUFFER_WIDTH);
 287          break;
 288       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 289          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 290                           _EGL_MAX_PBUFFER_HEIGHT);
 291          break;
 292       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
 293          if (disp->Extensions.KHR_mutable_render_buffer)
 294             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
 295          break;
 296       default:
 297          key = dri2_to_egl_attribute_map[attrib];
 298          if (key != 0)
 299             _eglSetConfigKey(&base, key, value);
 300          break;
 301       }
 302    }
 303
 304    if (attr_list)
 305       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 306          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 307
 308    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 309       return NULL;
 310
 311    base.NativeRenderable = EGL_TRUE;
 312
 313    base.SurfaceType = surface_type;
 314    if (surface_type & (EGL_PBUFFER_BIT |
 315        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 316       base.BindToTextureRGB = bind_to_texture_rgb;
 317       if (base.AlphaSize > 0)
 318          base.BindToTextureRGBA = bind_to_texture_rgba;
 319    }
 320
 321    base.RenderableType = disp->ClientAPIs;
 322    base.Conformant = disp->ClientAPIs;
 323
 324    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 325    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 326
 327    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 328       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 329       return NULL;
 330    }
 331
 332    config_id = base.ConfigID;
 333    base.ConfigID    = EGL_DONT_CARE;
 334    base.SurfaceType = EGL_DONT_CARE;
 335    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 336                                  (_EGLArrayForEach) dri2_match_config, &base);
 337
 338    if (num_configs == 1) {
 339       conf = (struct dri2_egl_config *) matching_config;
 340
 341       if (!conf->dri_config[double_buffer][srgb])
 342          conf->dri_config[double_buffer][srgb] = dri_config;
 343       else
 344          /* a similar config type is already added (unlikely) => discard */
 345          return NULL;
 346    }
 347    else if (num_configs == 0) {
 348       conf = calloc(1, sizeof *conf);
 349       if (conf == NULL)
 350          return NULL;
 351
 352       conf->dri_config[double_buffer][srgb] = dri_config;
 353
 354       memcpy(&conf->base, &base, sizeof base);
 355       conf->base.SurfaceType = 0;
 356       conf->base.ConfigID = config_id;
 357
 358       _eglLinkConfig(&conf->base);
 359    }
 360    else {
 361       unreachable("duplicates should not be possible");
 362       return NULL;
 363    }
 364
 365    if (double_buffer) {
 366       surface_type &= ~EGL_PIXMAP_BIT;
 367    }
 368
 369    /* No support for pbuffer + MSAA for now.
 370     *
 371     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 372     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 373     */
 374    if (base.Samples) {
 375       surface_type &= ~EGL_PBUFFER_BIT;
 376    }
 377
 378    conf->base.SurfaceType |= surface_type;
 379
 380    return conf;
 381 }
 382
 383 __DRIimage *
 384 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 385 {
 386    _EGLDisplay *disp = data;
 387    struct dri2_egl_image *dri2_img;
 388    _EGLImage *img;
 389
 390    (void) screen;
 391
 392    img = _eglLookupImage(image, disp);
 393    if (img == NULL) {
 394       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 395       return NULL;
 396    }
 397
 398    dri2_img = dri2_egl_image(image);
 399
 400    return dri2_img->dri_image;
 401 }
 402
 403 const __DRIimageLookupExtension image_lookup_extension = {
 404    .base = { __DRI_IMAGE_LOOKUP, 1 },
 405
 406    .lookupEGLImage       = dri2_lookup_egl_image
 407 };
 408
 409 struct dri2_extension_match {
 410    const char *name;
 411    int version;
 412    int offset;
 413 };
 414
 415 static const struct dri2_extension_match dri3_driver_extensions[] = {
 416    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 417    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 418    { NULL, 0, 0 }
 419 };
 420
 421 static const struct dri2_extension_match dri2_driver_extensions[] = {
 422    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 423    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 424    { NULL, 0, 0 }
 425 };
 426
 427 static const struct dri2_extension_match dri2_core_extensions[] = {
 428    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 429    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 430    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 431    { NULL, 0, 0 }
 432 };
 433
 434 static const struct dri2_extension_match swrast_driver_extensions[] = {
 435    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 436    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 437    { NULL, 0, 0 }
 438 };
 439
 440 static const struct dri2_extension_match swrast_core_extensions[] = {
 441    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 442    { NULL, 0, 0 }
 443 };
 444
 445 static const struct dri2_extension_match optional_driver_extensions[] = {
 446    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
 447    { NULL, 0, 0 }
 448 };
 449
 450 static const struct dri2_extension_match optional_core_extensions[] = {
 451    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 452    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 453    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 454    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 455    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 456    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 457    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 458    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 459    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 460    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 461    { NULL, 0, 0 }
 462 };
 463
 464 static EGLBoolean
 465 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 466                      const struct dri2_extension_match *matches,
 467                      const __DRIextension **extensions,
 468                      bool optional)
 469 {
 470    int ret = EGL_TRUE;
 471    void *field;
 472
 473    for (int i = 0; extensions[i]; i++) {
 474       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 475       for (int j = 0; matches[j].name; j++) {
 476          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 477              extensions[i]->version >= matches[j].version) {
 478             field = ((char *) dri2_dpy + matches[j].offset);
 479             *(const __DRIextension **) field = extensions[i];
 480             _eglLog(_EGL_INFO, "found extension %s version %d",
 481                     extensions[i]->name, extensions[i]->version);
 482             break;
 483          }
 484       }
 485    }
 486
 487    for (int j = 0; matches[j].name; j++) {
 488       field = ((char *) dri2_dpy + matches[j].offset);
 489       if (*(const __DRIextension **) field == NULL) {
 490          if (optional) {
 491             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 492                     matches[j].name, matches[j].version);
 493          } else {
 494             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 495                     matches[j].name, matches[j].version);
 496             ret = EGL_FALSE;
 497          }
 498       }
 499    }
 500
 501    return ret;
 502 }
 503
 504 static const __DRIextension **
 505 dri2_open_driver(_EGLDisplay *disp)
 506 {
 507    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 508    static const char *search_path_vars[] = {
 509       "LIBGL_DRIVERS_PATH",
 510       NULL,
 511    };
 512
 513    return loader_open_driver(dri2_dpy->driver_name,
 514                              &dri2_dpy->driver,
 515                              search_path_vars);
 516 }
 517
 518 static EGLBoolean
 519 dri2_load_driver_common(_EGLDisplay *disp,
 520                         const struct dri2_extension_match *driver_extensions)
 521 {
 522    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 523    const __DRIextension **extensions;
 524
 525    extensions = dri2_open_driver(disp);
 526    if (!extensions)
 527       return EGL_FALSE;
 528
 529    if (!dri2_bind_extensions(dri2_dpy, driver_extensions, extensions, false)) {
 530       dlclose(dri2_dpy->driver);
 531       return EGL_FALSE;
 532    }
 533    dri2_dpy->driver_extensions = extensions;
 534
 535    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 536
 537    return EGL_TRUE;
 538 }
 539
 540 EGLBoolean
 541 dri2_load_driver(_EGLDisplay *disp)
 542 {
 543    return dri2_load_driver_common(disp, dri2_driver_extensions);
 544 }
 545
 546 EGLBoolean
 547 dri2_load_driver_dri3(_EGLDisplay *disp)
 548 {
 549    return dri2_load_driver_common(disp, dri3_driver_extensions);
 550 }
 551
 552 EGLBoolean
 553 dri2_load_driver_swrast(_EGLDisplay *disp)
 554 {
 555    return dri2_load_driver_common(disp, swrast_driver_extensions);
 556 }
 557
 558 static unsigned
 559 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 560 {
 561    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 562    unsigned int value = 0;
 563
 564    if (!rendererQuery ||
 565        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 566       return 0;
 567
 568    return value;
 569 }
 570
 571 static const char *
 572 dri2_query_driver_name(_EGLDisplay *disp)
 573 {
 574     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 575     return dri2_dpy->driver_name;
 576 }
 577
 578 static char *
 579 dri2_query_driver_config(_EGLDisplay *disp)
 580 {
 581     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 582     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
 583
 584     if (ext->base.version >= 2)
 585         return ext->getXml(dri2_dpy->driver_name);
 586
 587     return strdup(ext->xml);
 588 }
 589
 590
 591 void
 592 dri2_setup_screen(_EGLDisplay *disp)
 593 {
 594    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 595    unsigned int api_mask;
 596
 597    /*
 598     * EGL 1.5 specification defines the default value to 1. Moreover,
 599     * eglSwapInterval() is required to clamp requested value to the supported
 600     * range. Since the default value is implicitly assumed to be supported,
 601     * use it as both minimum and maximum for the platforms that do not allow
 602     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 603     * override these values already.
 604     */
 605    dri2_dpy->min_swap_interval = 1;
 606    dri2_dpy->max_swap_interval = 1;
 607    dri2_dpy->default_swap_interval = 1;
 608
 609    if (dri2_dpy->image_driver) {
 610       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 611    } else if (dri2_dpy->dri2) {
 612       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 613    } else {
 614       assert(dri2_dpy->swrast);
 615       api_mask = 1 << __DRI_API_OPENGL |
 616                  1 << __DRI_API_GLES |
 617                  1 << __DRI_API_GLES2 |
 618                  1 << __DRI_API_GLES3;
 619    }
 620
 621    disp->ClientAPIs = 0;
 622    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 623       disp->ClientAPIs |= EGL_OPENGL_BIT;
 624    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 625       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 626    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 627       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 628    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 629       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 630
 631    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 632    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 633    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 634
 635    if (dri2_dpy->configOptions) {
 636        disp->Extensions.MESA_query_driver = EGL_TRUE;
 637    }
 638
 639    /* Report back to EGL the bitmask of priorities supported */
 640    disp->Extensions.IMG_context_priority =
 641       dri2_renderer_query_integer(dri2_dpy,
 642                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 643
 644    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 645
 646    if (dri2_renderer_query_integer(dri2_dpy,
 647                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 648       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 649
 650    if (dri2_dpy->image_driver ||
 651        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 652        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 653       disp->Extensions.KHR_create_context = EGL_TRUE;
 654
 655       if (dri2_dpy->robustness)
 656          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 657    }
 658
 659    if (dri2_dpy->no_error)
 660       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 661
 662    if (dri2_dpy->fence) {
 663       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 664       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 665       if (dri2_dpy->fence->get_fence_from_cl_event)
 666          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 667       if (dri2_dpy->fence->base.version >= 2 &&
 668           dri2_dpy->fence->get_capabilities) {
 669          unsigned capabilities =
 670             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 671          disp->Extensions.ANDROID_native_fence_sync =
 672             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 673       }
 674    }
 675
 676    if (dri2_dpy->blob)
 677       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 678
 679    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 680
 681    if (dri2_dpy->image) {
 682       if (dri2_dpy->image->base.version >= 10 &&
 683           dri2_dpy->image->getCapabilities != NULL) {
 684          int capabilities;
 685
 686          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 687          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 688
 689          if (dri2_dpy->image->base.version >= 11)
 690             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 691       } else {
 692          disp->Extensions.MESA_drm_image = EGL_TRUE;
 693          if (dri2_dpy->image->base.version >= 11)
 694             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 695       }
 696
 697       disp->Extensions.KHR_image_base = EGL_TRUE;
 698       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 699       if (dri2_dpy->image->base.version >= 5 &&
 700           dri2_dpy->image->createImageFromTexture) {
 701          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 702          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 703
 704          if (dri2_renderer_query_integer(dri2_dpy,
 705                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 706              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 707       }
 708 #ifdef HAVE_LIBDRM
 709       if (dri2_dpy->image->base.version >= 8 &&
 710           dri2_dpy->image->createImageFromDmaBufs) {
 711          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 712       }
 713       if (dri2_dpy->image->base.version >= 15 &&
 714           dri2_dpy->image->createImageFromDmaBufs2 &&
 715           dri2_dpy->image->queryDmaBufFormats &&
 716           dri2_dpy->image->queryDmaBufModifiers) {
 717          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 718       }
 719 #endif
 720    }
 721
 722    if (dri2_dpy->flush_control)
 723       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 724 }
 725
 726 void
 727 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 728 {
 729    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 730    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 731
 732    /* Allow driconf to override applications.*/
 733    if (dri2_dpy->config)
 734       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 735                                      "vblank_mode", &vblank_mode);
 736    switch (vblank_mode) {
 737    case DRI_CONF_VBLANK_NEVER:
 738       dri2_dpy->min_swap_interval = 0;
 739       dri2_dpy->max_swap_interval = 0;
 740       dri2_dpy->default_swap_interval = 0;
 741       break;
 742    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 743       dri2_dpy->min_swap_interval = 1;
 744       dri2_dpy->max_swap_interval = max_swap_interval;
 745       dri2_dpy->default_swap_interval = 1;
 746       break;
 747    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 748       dri2_dpy->min_swap_interval = 0;
 749       dri2_dpy->max_swap_interval = max_swap_interval;
 750       dri2_dpy->default_swap_interval = 0;
 751       break;
 752    default:
 753    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 754       dri2_dpy->min_swap_interval = 0;
 755       dri2_dpy->max_swap_interval = max_swap_interval;
 756       dri2_dpy->default_swap_interval = 1;
 757       break;
 758    }
 759 }
 760
 761 /* All platforms but DRM call this function to create the screen and populate
 762  * the driver_configs. DRM inherits that information from its display - GBM.
 763  */
 764 EGLBoolean
 765 dri2_create_screen(_EGLDisplay *disp)
 766 {
 767    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 768
 769    if (dri2_dpy->image_driver) {
 770       dri2_dpy->dri_screen =
 771          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 772                                                   dri2_dpy->loader_extensions,
 773                                                   dri2_dpy->driver_extensions,
 774                                                   &dri2_dpy->driver_configs,
 775                                                   disp);
 776    } else if (dri2_dpy->dri2) {
 777       if (dri2_dpy->dri2->base.version >= 4) {
 778          dri2_dpy->dri_screen =
 779             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 780                                              dri2_dpy->loader_extensions,
 781                                              dri2_dpy->driver_extensions,
 782                                              &dri2_dpy->driver_configs, disp);
 783       } else {
 784          dri2_dpy->dri_screen =
 785             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 786                                             dri2_dpy->loader_extensions,
 787                                             &dri2_dpy->driver_configs, disp);
 788       }
 789    } else {
 790       assert(dri2_dpy->swrast);
 791       if (dri2_dpy->swrast->base.version >= 4) {
 792          dri2_dpy->dri_screen =
 793             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 794                                                dri2_dpy->driver_extensions,
 795                                                &dri2_dpy->driver_configs, disp);
 796       } else {
 797          dri2_dpy->dri_screen =
 798             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 799                                               &dri2_dpy->driver_configs, disp);
 800       }
 801    }
 802
 803    if (dri2_dpy->dri_screen == NULL) {
 804       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 805       return EGL_FALSE;
 806    }
 807
 808    dri2_dpy->own_dri_screen = true;
 809    return EGL_TRUE;
 810 }
 811
 812 EGLBoolean
 813 dri2_setup_extensions(_EGLDisplay *disp)
 814 {
 815    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 816    const struct dri2_extension_match *mandatory_core_extensions;
 817    const __DRIextension **extensions;
 818
 819    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 820
 821    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 822       mandatory_core_extensions = dri2_core_extensions;
 823    else
 824       mandatory_core_extensions = swrast_core_extensions;
 825
 826    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 827       return EGL_FALSE;
 828
 829 #ifdef HAVE_DRI3_MODIFIERS
 830    dri2_dpy->multibuffers_available =
 831       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
 832                                             dri2_dpy->dri3_minor_version >= 2)) &&
 833       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
 834                                                dri2_dpy->present_minor_version >= 2)) &&
 835       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
 836 #endif
 837
 838    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 839    return EGL_TRUE;
 840 }
 841
 842 /**
 843  * Called via eglInitialize(), GLX_drv->API.Initialize().
 844  *
 845  * This must be guaranteed to be called exactly once, even if eglInitialize is
 846  * called many times (without a eglTerminate in between).
 847  */
 848 static EGLBoolean
 849 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 850 {
 851    EGLBoolean ret = EGL_FALSE;
 852    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 853
 854    /* In the case where the application calls eglMakeCurrent(context1),
 855     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 856     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 857     * initialized, as we need it to be able to free context1 correctly.
 858     *
 859     * It would probably be safest to forcibly release the display with
 860     * dri2_display_release, to make sure the display is reinitialized correctly.
 861     * However, the EGL spec states that we need to keep a reference to the
 862     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 863     * we would leak context1 as we would be missing the old display connection
 864     * to free it up correctly.
 865     */
 866    if (dri2_dpy) {
 867       dri2_dpy->ref_count++;
 868       return EGL_TRUE;
 869    }
 870
 871    loader_set_logger(_eglLog);
 872
 873    switch (disp->Platform) {
 874    case _EGL_PLATFORM_SURFACELESS:
 875       ret = dri2_initialize_surfaceless(drv, disp);
 876       break;
 877    case _EGL_PLATFORM_X11:
 878       ret = dri2_initialize_x11(drv, disp);
 879       break;
 880    case _EGL_PLATFORM_DRM:
 881       ret = dri2_initialize_drm(drv, disp);
 882       break;
 883    case _EGL_PLATFORM_WAYLAND:
 884       ret = dri2_initialize_wayland(drv, disp);
 885       break;
 886    case _EGL_PLATFORM_ANDROID:
 887       ret = dri2_initialize_android(drv, disp);
 888       break;
 889    default:
 890       unreachable("Callers ensure we cannot get here.");
 891       return EGL_FALSE;
 892    }
 893
 894    if (!ret)
 895       return EGL_FALSE;
 896
 897    dri2_dpy = dri2_egl_display(disp);
 898    dri2_dpy->ref_count++;
 899
 900    return EGL_TRUE;
 901 }
 902
 903 /**
 904  * Decrement display reference count, and free up display if necessary.
 905  */
 906 static void
 907 dri2_display_release(_EGLDisplay *disp)
 908 {
 909    struct dri2_egl_display *dri2_dpy;
 910
 911    if (!disp)
 912       return;
 913
 914    dri2_dpy = dri2_egl_display(disp);
 915
 916    assert(dri2_dpy->ref_count > 0);
 917    dri2_dpy->ref_count--;
 918
 919    if (dri2_dpy->ref_count > 0)
 920       return;
 921
 922    _eglCleanupDisplay(disp);
 923    dri2_display_destroy(disp);
 924 }
 925
 926 void
 927 dri2_display_destroy(_EGLDisplay *disp)
 928 {
 929    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 930
 931    if (dri2_dpy->own_dri_screen) {
 932       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
 933          dri2_dpy->vtbl->close_screen_notify(disp);
 934       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 935    }
 936    if (dri2_dpy->fd >= 0)
 937       close(dri2_dpy->fd);
 938    if (dri2_dpy->driver)
 939       dlclose(dri2_dpy->driver);
 940    free(dri2_dpy->driver_name);
 941
 942 #ifdef HAVE_WAYLAND_PLATFORM
 943    free(dri2_dpy->device_name);
 944 #endif
 945
 946    switch (disp->Platform) {
 947    case _EGL_PLATFORM_X11:
 948       dri2_teardown_x11(dri2_dpy);
 949       break;
 950    case _EGL_PLATFORM_DRM:
 951       dri2_teardown_drm(dri2_dpy);
 952       break;
 953    case _EGL_PLATFORM_WAYLAND:
 954       dri2_teardown_wayland(dri2_dpy);
 955       break;
 956    default:
 957       /* TODO: add teardown for other platforms */
 958       break;
 959    }
 960
 961    /* The drm platform does not create the screen/driver_configs but reuses
 962     * the ones from the gbm device. As such the gbm itself is responsible
 963     * for the cleanup.
 964     */
 965    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
 966       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
 967          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
 968       free(dri2_dpy->driver_configs);
 969    }
 970    free(dri2_dpy);
 971    disp->DriverData = NULL;
 972 }
 973
 974 __DRIbuffer *
 975 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
 976                                     unsigned int att, unsigned int format)
 977 {
 978    struct dri2_egl_display *dri2_dpy =
 979       dri2_egl_display(dri2_surf->base.Resource.Display);
 980
 981    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
 982       return NULL;
 983
 984    if (!dri2_surf->local_buffers[att]) {
 985       dri2_surf->local_buffers[att] =
 986          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
 987                                         dri2_surf->base.Width, dri2_surf->base.Height);
 988    }
 989
 990    return dri2_surf->local_buffers[att];
 991 }
 992
 993 void
 994 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
 995 {
 996    struct dri2_egl_display *dri2_dpy =
 997       dri2_egl_display(dri2_surf->base.Resource.Display);
 998
 999    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1000       if (dri2_surf->local_buffers[i]) {
1001          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1002                                        dri2_surf->local_buffers[i]);
1003          dri2_surf->local_buffers[i] = NULL;
1004       }
1005    }
1006 }
1007
1008 /**
1009  * Called via eglTerminate(), drv->API.Terminate().
1010  *
1011  * This must be guaranteed to be called exactly once, even if eglTerminate is
1012  * called many times (without a eglInitialize in between).
1013  */
1014 static EGLBoolean
1015 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1016 {
1017    /* Release all non-current Context/Surfaces. */
1018    _eglReleaseDisplayResources(drv, disp);
1019
1020    dri2_display_release(disp);
1021
1022    return EGL_TRUE;
1023 }
1024
1025 /**
1026  * Set the error code after a call to
1027  * dri2_egl_display::dri2::createContextAttribs.
1028  */
1029 static void
1030 dri2_create_context_attribs_error(int dri_error)
1031 {
1032    EGLint egl_error;
1033
1034    switch (dri_error) {
1035    case __DRI_CTX_ERROR_SUCCESS:
1036       return;
1037
1038    case __DRI_CTX_ERROR_NO_MEMORY:
1039       egl_error = EGL_BAD_ALLOC;
1040       break;
1041
1042   /* From the EGL_KHR_create_context spec, section "Errors":
1043    *
1044    *   * If <config> does not support a client API context compatible
1045    *     with the requested API major and minor version, [...] context flags,
1046    *     and context reset notification behavior (for client API types where
1047    *     these attributes are supported), then an EGL_BAD_MATCH error is
1048    *     generated.
1049    *
1050    *   * If an OpenGL ES context is requested and the values for
1051    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1052    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1053    *     is not defined, than an EGL_BAD_MATCH error is generated.
1054    *
1055    *   * If an OpenGL context is requested, the requested version is
1056    *     greater than 3.2, and the value for attribute
1057    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1058    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1059    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1060    *     one of these bits set; or if the implementation does not support
1061    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1062    */
1063    case __DRI_CTX_ERROR_BAD_API:
1064    case __DRI_CTX_ERROR_BAD_VERSION:
1065    case __DRI_CTX_ERROR_BAD_FLAG:
1066       egl_error = EGL_BAD_MATCH;
1067       break;
1068
1069   /* From the EGL_KHR_create_context spec, section "Errors":
1070    *
1071    *   * If an attribute name or attribute value in <attrib_list> is not
1072    *     recognized (including unrecognized bits in bitmask attributes),
1073    *     then an EGL_BAD_ATTRIBUTE error is generated."
1074    */
1075    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1076    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1077       egl_error = EGL_BAD_ATTRIBUTE;
1078       break;
1079
1080    default:
1081       assert(!"unknown dri_error code");
1082       egl_error = EGL_BAD_MATCH;
1083       break;
1084    }
1085
1086    _eglError(egl_error, "dri2_create_context");
1087 }
1088
1089 static bool
1090 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1091                           struct dri2_egl_display *dri2_dpy,
1092                           uint32_t *ctx_attribs,
1093                           unsigned *num_attribs)
1094 {
1095    int pos = 0;
1096
1097    assert(*num_attribs >= NUM_ATTRIBS);
1098
1099    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1100    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1101    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1102    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1103
1104    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1105       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1106        * extension, don't even try to send it the robust-access flag.
1107        * It may explode.  Instead, generate the required EGL error here.
1108        */
1109       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1110             && !dri2_dpy->robustness) {
1111          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1112          return false;
1113       }
1114
1115       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1116       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1117          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1118    }
1119
1120    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1121       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1122        * extension, don't even try to send it a reset strategy.  It may
1123        * explode.  Instead, generate the required EGL error here.
1124        */
1125       if (!dri2_dpy->robustness) {
1126          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1127          return false;
1128       }
1129
1130       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1131       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1132    }
1133
1134    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1135       unsigned val;
1136
1137       switch (dri2_ctx->base.ContextPriority) {
1138       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1139          val = __DRI_CTX_PRIORITY_HIGH;
1140          break;
1141       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1142          val = __DRI_CTX_PRIORITY_MEDIUM;
1143          break;
1144       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1145          val = __DRI_CTX_PRIORITY_LOW;
1146          break;
1147       default:
1148          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1149          return false;
1150       }
1151
1152       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1153       ctx_attribs[pos++] = val;
1154    }
1155
1156    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1157       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1158       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1159    }
1160
1161    *num_attribs = pos;
1162
1163    return true;
1164 }
1165
1166 /**
1167  * Called via eglCreateContext(), drv->API.CreateContext().
1168  */
1169 static _EGLContext *
1170 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1171                     _EGLContext *share_list, const EGLint *attrib_list)
1172 {
1173    struct dri2_egl_context *dri2_ctx;
1174    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1175    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1176    __DRIcontext *shared =
1177       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1178    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1179    const __DRIconfig *dri_config;
1180    int api;
1181    unsigned error;
1182    unsigned num_attribs = NUM_ATTRIBS;
1183    uint32_t ctx_attribs[NUM_ATTRIBS];
1184
1185    (void) drv;
1186
1187    dri2_ctx = malloc(sizeof *dri2_ctx);
1188    if (!dri2_ctx) {
1189       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1190       return NULL;
1191    }
1192
1193    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1194       goto cleanup;
1195
1196    /* The EGL_EXT_create_context_robustness spec says:
1197     *
1198     *    "Add to the eglCreateContext context creation errors: [...]
1199     *
1200     *     * If the reset notification behavior of <share_context> and the
1201     *       newly created context are different then an EGL_BAD_MATCH error is
1202     *       generated."
1203     */
1204    if (share_list && share_list->ResetNotificationStrategy !=
1205                      dri2_ctx->base.ResetNotificationStrategy) {
1206       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1207       goto cleanup;
1208    }
1209
1210    /* The EGL_KHR_create_context_no_error spec says:
1211     *
1212     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1213     *    used to create <share_context> does not match the value of
1214     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1215     */
1216    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1217       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1218       goto cleanup;
1219    }
1220
1221    switch (dri2_ctx->base.ClientAPI) {
1222    case EGL_OPENGL_ES_API:
1223       switch (dri2_ctx->base.ClientMajorVersion) {
1224       case 1:
1225          api = __DRI_API_GLES;
1226          break;
1227       case 2:
1228          api = __DRI_API_GLES2;
1229          break;
1230       case 3:
1231          api = __DRI_API_GLES3;
1232          break;
1233       default:
1234          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1235          free(dri2_ctx);
1236          return NULL;
1237       }
1238       break;
1239    case EGL_OPENGL_API:
1240       if ((dri2_ctx->base.ClientMajorVersion >= 4
1241            || (dri2_ctx->base.ClientMajorVersion == 3
1242                && dri2_ctx->base.ClientMinorVersion >= 2))
1243           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1244          api = __DRI_API_OPENGL_CORE;
1245       else
1246          api = __DRI_API_OPENGL;
1247       break;
1248    default:
1249       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1250       free(dri2_ctx);
1251       return NULL;
1252    }
1253
1254    if (conf != NULL) {
1255       /* The config chosen here isn't necessarily
1256        * used for surfaces later.
1257        * A pixmap surface will use the single config.
1258        * This opportunity depends on disabling the
1259        * doubleBufferMode check in
1260        * src/mesa/main/context.c:check_compatible()
1261        */
1262       if (dri2_config->dri_config[1][0])
1263          dri_config = dri2_config->dri_config[1][0];
1264       else
1265          dri_config = dri2_config->dri_config[0][0];
1266    }
1267    else
1268       dri_config = NULL;
1269
1270    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1271                                   &num_attribs))
1272       goto cleanup;
1273
1274    if (dri2_dpy->image_driver) {
1275       dri2_ctx->dri_context =
1276          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1277                                                       api,
1278                                                       dri_config,
1279                                                       shared,
1280                                                       num_attribs / 2,
1281                                                       ctx_attribs,
1282                                                       & error,
1283                                                       dri2_ctx);
1284       dri2_create_context_attribs_error(error);
1285    } else if (dri2_dpy->dri2) {
1286       if (dri2_dpy->dri2->base.version >= 3) {
1287          dri2_ctx->dri_context =
1288             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1289                                                  api,
1290                                                  dri_config,
1291                                                  shared,
1292                                                  num_attribs / 2,
1293                                                  ctx_attribs,
1294                                                  & error,
1295                                                  dri2_ctx);
1296          dri2_create_context_attribs_error(error);
1297       } else {
1298          dri2_ctx->dri_context =
1299             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1300                                                    api,
1301                                                    dri_config,
1302                                                    shared,
1303                                                    dri2_ctx);
1304       }
1305    } else {
1306       assert(dri2_dpy->swrast);
1307       if (dri2_dpy->swrast->base.version >= 3) {
1308          dri2_ctx->dri_context =
1309             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1310                                                    api,
1311                                                    dri_config,
1312                                                    shared,
1313                                                    num_attribs / 2,
1314                                                    ctx_attribs,
1315                                                    & error,
1316                                                    dri2_ctx);
1317          dri2_create_context_attribs_error(error);
1318       } else {
1319          dri2_ctx->dri_context =
1320             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1321                                                      api,
1322                                                      dri_config,
1323                                                      shared,
1324                                                      dri2_ctx);
1325       }
1326    }
1327
1328    if (!dri2_ctx->dri_context)
1329       goto cleanup;
1330
1331    return &dri2_ctx->base;
1332
1333  cleanup:
1334    free(dri2_ctx);
1335    return NULL;
1336 }
1337
1338 /**
1339  * Called via eglDestroyContext(), drv->API.DestroyContext().
1340  */
1341 static EGLBoolean
1342 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1343 {
1344    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1345    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1346
1347    if (_eglPutContext(ctx)) {
1348       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1349       free(dri2_ctx);
1350    }
1351
1352    return EGL_TRUE;
1353 }
1354
1355 EGLBoolean
1356 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1357         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1358 {
1359    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1360    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1361
1362    dri2_surf->out_fence_fd = -1;
1363    dri2_surf->enable_out_fence = false;
1364    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1365        dri2_dpy->fence->get_capabilities &&
1366        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1367         __DRI_FENCE_CAP_NATIVE_FD)) {
1368       dri2_surf->enable_out_fence = enable_out_fence;
1369    }
1370
1371    return _eglInitSurface(surf, disp, type, conf, attrib_list);
1372 }
1373
1374 static void
1375 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1376 {
1377    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1378
1379    if (dri2_surf->out_fence_fd >= 0)
1380       close(dri2_surf->out_fence_fd);
1381
1382    dri2_surf->out_fence_fd = fence_fd;
1383 }
1384
1385 void
1386 dri2_fini_surface(_EGLSurface *surf)
1387 {
1388    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1389
1390    dri2_surface_set_out_fence_fd(surf, -1);
1391    dri2_surf->enable_out_fence = false;
1392 }
1393
1394 static EGLBoolean
1395 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
1396 {
1397    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1398
1399    if (!_eglPutSurface(surf))
1400       return EGL_TRUE;
1401
1402    return dri2_dpy->vtbl->destroy_surface(drv, disp, surf);
1403 }
1404
1405 static void
1406 dri2_surf_update_fence_fd(_EGLContext *ctx,
1407                           _EGLDisplay *disp, _EGLSurface *surf)
1408 {
1409    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1410    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1411    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1412    int fence_fd = -1;
1413    void *fence;
1414
1415    if (!dri2_surf->enable_out_fence)
1416       return;
1417
1418    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1419    if (fence) {
1420       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1421                                                fence);
1422       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1423    }
1424    dri2_surface_set_out_fence_fd(surf, fence_fd);
1425 }
1426
1427 /**
1428  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1429  */
1430 static EGLBoolean
1431 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1432                   _EGLSurface *rsurf, _EGLContext *ctx)
1433 {
1434    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1435    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1436    _EGLDisplay *old_disp = NULL;
1437    struct dri2_egl_display *old_dri2_dpy = NULL;
1438    _EGLContext *old_ctx;
1439    _EGLSurface *old_dsurf, *old_rsurf;
1440    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1441    __DRIdrawable *ddraw, *rdraw;
1442    __DRIcontext *cctx;
1443    EGLBoolean unbind;
1444
1445    if (!dri2_dpy)
1446       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1447
1448    /* make new bindings */
1449    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1450       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1451       return EGL_FALSE;
1452    }
1453
1454    if (old_ctx) {
1455       old_disp = old_ctx->Resource.Display;
1456       old_dri2_dpy = dri2_egl_display(old_disp);
1457    }
1458
1459    /* flush before context switch */
1460    if (old_ctx)
1461       dri2_gl_flush();
1462
1463    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1464    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1465    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1466
1467    if (old_ctx) {
1468       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1469
1470       if (old_dsurf)
1471          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1472
1473       /* Disable shared buffer mode */
1474       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1475           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1476          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1477       }
1478
1479       dri2_dpy->core->unbindContext(old_cctx);
1480    }
1481
1482    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1483
1484    if (!unbind && !dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1485       /* undo the previous _eglBindContext */
1486       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1487       assert(&dri2_ctx->base == ctx &&
1488              tmp_dsurf == dsurf &&
1489              tmp_rsurf == rsurf);
1490
1491       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1492           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1493          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1494       }
1495
1496       _eglPutSurface(dsurf);
1497       _eglPutSurface(rsurf);
1498       _eglPutContext(ctx);
1499
1500       _eglPutSurface(old_dsurf);
1501       _eglPutSurface(old_rsurf);
1502       _eglPutContext(old_ctx);
1503
1504       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1505        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1506        * as EGL_SUCCESS.
1507        */
1508       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1509    }
1510
1511    dri2_destroy_surface(drv, disp, old_dsurf);
1512    dri2_destroy_surface(drv, disp, old_rsurf);
1513
1514    if (!unbind)
1515       dri2_dpy->ref_count++;
1516
1517    if (old_ctx) {
1518       dri2_destroy_context(drv, disp, old_ctx);
1519       dri2_display_release(old_disp);
1520    }
1521
1522    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1523        dri2_dpy->vtbl->set_shared_buffer_mode) {
1524       /* Always update the shared buffer mode. This is obviously needed when
1525        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1526        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1527        * case where external non-EGL API may have changed window's shared
1528        * buffer mode since we last saw it.
1529        */
1530       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1531       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1532    }
1533
1534    return EGL_TRUE;
1535 }
1536
1537 __DRIdrawable *
1538 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1539 {
1540    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1541
1542    return dri2_surf->dri_drawable;
1543 }
1544
1545 /*
1546  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1547  */
1548 static _EGLProc
1549 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1550 {
1551    return _glapi_get_proc_address(procname);
1552 }
1553
1554 static _EGLSurface*
1555 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
1556                            _EGLConfig *conf, void *native_window,
1557                            const EGLint *attrib_list)
1558 {
1559    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1560    return dri2_dpy->vtbl->create_window_surface(drv, disp, conf, native_window,
1561                                                 attrib_list);
1562 }
1563
1564 static _EGLSurface*
1565 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
1566                            _EGLConfig *conf, void *native_pixmap,
1567                            const EGLint *attrib_list)
1568 {
1569    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1570    return dri2_dpy->vtbl->create_pixmap_surface(drv, disp, conf, native_pixmap,
1571                                                 attrib_list);
1572 }
1573
1574 static _EGLSurface*
1575 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
1576                            _EGLConfig *conf, const EGLint *attrib_list)
1577 {
1578    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1579    return dri2_dpy->vtbl->create_pbuffer_surface(drv, disp, conf, attrib_list);
1580 }
1581
1582 static EGLBoolean
1583 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1584                    EGLint interval)
1585 {
1586    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1587    if (!dri2_dpy->vtbl->swap_interval)
1588       return EGL_TRUE;
1589    return dri2_dpy->vtbl->swap_interval(drv, disp, surf, interval);
1590 }
1591
1592 /**
1593  * Asks the client API to flush any rendering to the drawable so that we can
1594  * do our swapbuffers.
1595  */
1596 void
1597 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1598 {
1599    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1600    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1601
1602    if (dri2_dpy->flush) {
1603       if (dri2_dpy->flush->base.version >= 4) {
1604          /* We know there's a current context because:
1605           *
1606           *     "If surface is not bound to the calling thread’s current
1607           *      context, an EGL_BAD_SURFACE error is generated."
1608          */
1609          _EGLContext *ctx = _eglGetCurrentContext();
1610          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1611
1612          /* From the EGL 1.4 spec (page 52):
1613           *
1614           *     "The contents of ancillary buffers are always undefined
1615           *      after calling eglSwapBuffers."
1616           */
1617          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1618                                            dri_drawable,
1619                                            __DRI2_FLUSH_DRAWABLE |
1620                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1621                                            __DRI2_THROTTLE_SWAPBUFFER);
1622       } else {
1623          dri2_dpy->flush->flush(dri_drawable);
1624       }
1625    }
1626 }
1627
1628 static EGLBoolean
1629 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
1630 {
1631    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1632    _EGLContext *ctx = _eglGetCurrentContext();
1633
1634    if (ctx && surf)
1635       dri2_surf_update_fence_fd(ctx, disp, surf);
1636    return dri2_dpy->vtbl->swap_buffers(drv, disp, surf);
1637 }
1638
1639 static EGLBoolean
1640 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *disp,
1641                               _EGLSurface *surf,
1642                               const EGLint *rects, EGLint n_rects)
1643 {
1644    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1645    _EGLContext *ctx = _eglGetCurrentContext();
1646
1647    if (ctx && surf)
1648       dri2_surf_update_fence_fd(ctx, disp, surf);
1649    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, disp, surf,
1650                                                    rects, n_rects);
1651 }
1652
1653 static EGLBoolean
1654 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1655                          EGLint numRects, const EGLint *rects)
1656 {
1657    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1658    return dri2_dpy->vtbl->swap_buffers_region(drv, disp, surf, numRects, rects);
1659 }
1660
1661 static EGLBoolean
1662 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1663                        EGLint *rects, EGLint n_rects)
1664 {
1665    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1666    return dri2_dpy->vtbl->set_damage_region(drv, disp, surf, rects, n_rects);
1667 }
1668
1669 static EGLBoolean
1670 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1671                      EGLint x, EGLint y, EGLint width, EGLint height)
1672 {
1673    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1674    return dri2_dpy->vtbl->post_sub_buffer(drv, disp, surf, x, y, width, height);
1675 }
1676
1677 static EGLBoolean
1678 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1679                   void *native_pixmap_target)
1680 {
1681    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1682    return dri2_dpy->vtbl->copy_buffers(drv, disp, surf, native_pixmap_target);
1683 }
1684
1685 static EGLint
1686 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
1687 {
1688    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1689    return dri2_dpy->vtbl->query_buffer_age(drv, disp, surf);
1690 }
1691
1692 static EGLBoolean
1693 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1694 {
1695    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1696    _EGLSurface *surf = ctx->DrawSurface;
1697    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1698
1699    (void) drv;
1700
1701    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1702     * we need to copy fake to real here.*/
1703
1704    if (dri2_dpy->flush != NULL)
1705       dri2_dpy->flush->flush(dri_drawable);
1706
1707    return EGL_TRUE;
1708 }
1709
1710 static EGLBoolean
1711 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1712 {
1713    (void) drv;
1714    (void) disp;
1715
1716    if (engine != EGL_CORE_NATIVE_ENGINE)
1717       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1718    /* glXWaitX(); */
1719
1720    return EGL_TRUE;
1721 }
1722
1723 static EGLBoolean
1724 dri2_bind_tex_image(_EGLDriver *drv,
1725                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1726 {
1727    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1728    struct dri2_egl_context *dri2_ctx;
1729    _EGLContext *ctx;
1730    GLint format, target;
1731    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1732
1733    ctx = _eglGetCurrentContext();
1734    dri2_ctx = dri2_egl_context(ctx);
1735
1736    if (!_eglBindTexImage(drv, disp, surf, buffer))
1737       return EGL_FALSE;
1738
1739    switch (surf->TextureFormat) {
1740    case EGL_TEXTURE_RGB:
1741       format = __DRI_TEXTURE_FORMAT_RGB;
1742       break;
1743    case EGL_TEXTURE_RGBA:
1744       format = __DRI_TEXTURE_FORMAT_RGBA;
1745       break;
1746    default:
1747       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1748       format = __DRI_TEXTURE_FORMAT_RGBA;
1749    }
1750
1751    switch (surf->TextureTarget) {
1752    case EGL_TEXTURE_2D:
1753       target = GL_TEXTURE_2D;
1754       break;
1755    default:
1756       target = GL_TEXTURE_2D;
1757       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1758    }
1759
1760    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1761                                        target, format,
1762                                        dri_drawable);
1763
1764    return EGL_TRUE;
1765 }
1766
1767 static EGLBoolean
1768 dri2_release_tex_image(_EGLDriver *drv,
1769                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1770 {
1771    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1772    struct dri2_egl_context *dri2_ctx;
1773    _EGLContext *ctx;
1774    GLint  target;
1775    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1776
1777    ctx = _eglGetCurrentContext();
1778    dri2_ctx = dri2_egl_context(ctx);
1779
1780    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1781       return EGL_FALSE;
1782
1783    switch (surf->TextureTarget) {
1784    case EGL_TEXTURE_2D:
1785       target = GL_TEXTURE_2D;
1786       break;
1787    default:
1788       assert(!"missing texture target");
1789    }
1790
1791    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1792        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1793       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1794                                              target, dri_drawable);
1795    }
1796
1797    return EGL_TRUE;
1798 }
1799
1800 static _EGLImage*
1801 dri2_create_image(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx,
1802                   EGLenum target, EGLClientBuffer buffer,
1803                   const EGLint *attr_list)
1804 {
1805    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1806    return dri2_dpy->vtbl->create_image(drv, disp, ctx, target, buffer,
1807                                        attr_list);
1808 }
1809
1810 static _EGLImage *
1811 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1812 {
1813    struct dri2_egl_image *dri2_img;
1814
1815    if (dri_image == NULL) {
1816       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1817       return NULL;
1818    }
1819
1820    dri2_img = malloc(sizeof *dri2_img);
1821    if (!dri2_img) {
1822       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1823       return NULL;
1824    }
1825
1826    _eglInitImage(&dri2_img->base, disp);
1827
1828    dri2_img->dri_image = dri_image;
1829
1830    return &dri2_img->base;
1831 }
1832
1833 /**
1834  * Translate a DRI Image extension error code into an EGL error code.
1835  */
1836 static EGLint
1837 egl_error_from_dri_image_error(int dri_error)
1838 {
1839    switch (dri_error) {
1840    case __DRI_IMAGE_ERROR_SUCCESS:
1841       return EGL_SUCCESS;
1842    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1843       return EGL_BAD_ALLOC;
1844    case __DRI_IMAGE_ERROR_BAD_MATCH:
1845       return EGL_BAD_MATCH;
1846    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1847       return EGL_BAD_PARAMETER;
1848    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1849       return EGL_BAD_ACCESS;
1850    default:
1851       assert(!"unknown dri_error code");
1852       return EGL_BAD_ALLOC;
1853    }
1854 }
1855
1856 static _EGLImage *
1857 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1858                                    EGLClientBuffer buffer,
1859                                    const EGLint *attr_list)
1860 {
1861    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1862    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1863    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1864    __DRIimage *dri_image;
1865
1866    if (renderbuffer == 0) {
1867       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1868       return EGL_NO_IMAGE_KHR;
1869    }
1870
1871    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1872       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1873       return EGL_NO_IMAGE_KHR;
1874    }
1875
1876    if (dri2_dpy->image->base.version >= 17 &&
1877        dri2_dpy->image->createImageFromRenderbuffer2) {
1878       unsigned error = ~0;
1879
1880       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1881                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1882
1883       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1884
1885       if (!dri_image) {
1886          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1887          return EGL_NO_IMAGE_KHR;
1888       }
1889    } else {
1890       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1891                dri2_ctx->dri_context, renderbuffer, NULL);
1892       if (!dri_image) {
1893          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1894          return EGL_NO_IMAGE_KHR;
1895       }
1896    }
1897
1898    return dri2_create_image_from_dri(disp, dri_image);
1899 }
1900
1901 #ifdef HAVE_WAYLAND_PLATFORM
1902
1903 /* This structure describes how a wl_buffer maps to one or more
1904  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1905  * offsets and strides of the planes in the buffer.  This table maps a
1906  * wl_drm format code to a description of the planes in the buffer
1907  * that lets us create a __DRIimage for each of the planes. */
1908
1909 static const struct wl_drm_components_descriptor {
1910    uint32_t dri_components;
1911    EGLint components;
1912    int nplanes;
1913 } wl_drm_components[] = {
1914    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1915    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1916    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1917    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1918    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1919 };
1920
1921 static _EGLImage *
1922 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1923                                     EGLClientBuffer _buffer,
1924                                     const EGLint *attr_list)
1925 {
1926    struct wl_drm_buffer *buffer;
1927    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1928    const struct wl_drm_components_descriptor *f;
1929    __DRIimage *dri_image;
1930    _EGLImageAttribs attrs;
1931    int32_t plane;
1932
1933    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1934                                    (struct wl_resource *) _buffer);
1935    if (!buffer)
1936        return NULL;
1937
1938    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1939       return NULL;
1940
1941    plane = attrs.PlaneWL;
1942    f = buffer->driver_format;
1943    if (plane < 0 || plane >= f->nplanes) {
1944       _eglError(EGL_BAD_PARAMETER,
1945                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1946       return NULL;
1947    }
1948
1949    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1950    if (dri_image == NULL && plane == 0)
1951       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
1952    if (dri_image == NULL) {
1953       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1954       return NULL;
1955    }
1956
1957    return dri2_create_image_from_dri(disp, dri_image);
1958 }
1959 #endif
1960
1961 static EGLBoolean
1962 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
1963                               EGLuint64KHR *ust, EGLuint64KHR *msc,
1964                               EGLuint64KHR *sbc)
1965 {
1966    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1967    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
1968 }
1969
1970 /**
1971  * Set the error code after a call to
1972  * dri2_egl_image::dri_image::createImageFromTexture.
1973  */
1974 static void
1975 dri2_create_image_khr_texture_error(int dri_error)
1976 {
1977    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
1978
1979    if (egl_error != EGL_SUCCESS)
1980       _eglError(egl_error, "dri2_create_image_khr_texture");
1981 }
1982
1983 static _EGLImage *
1984 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
1985                                    EGLenum target,
1986                                    EGLClientBuffer buffer,
1987                                    const EGLint *attr_list)
1988 {
1989    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1990    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1991    struct dri2_egl_image *dri2_img;
1992    GLuint texture = (GLuint) (uintptr_t) buffer;
1993    _EGLImageAttribs attrs;
1994    GLuint depth;
1995    GLenum gl_target;
1996    unsigned error;
1997
1998    if (texture == 0) {
1999       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2000       return EGL_NO_IMAGE_KHR;
2001    }
2002
2003    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2004       return EGL_NO_IMAGE_KHR;
2005
2006    switch (target) {
2007    case EGL_GL_TEXTURE_2D_KHR:
2008       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2009          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2010          return EGL_NO_IMAGE_KHR;
2011       }
2012       depth = 0;
2013       gl_target = GL_TEXTURE_2D;
2014       break;
2015    case EGL_GL_TEXTURE_3D_KHR:
2016       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2017          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2018          return EGL_NO_IMAGE_KHR;
2019       }
2020
2021       depth = attrs.GLTextureZOffset;
2022       gl_target = GL_TEXTURE_3D;
2023       break;
2024    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2025    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2026    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2027    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2028    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2029    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2030       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2031          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2032          return EGL_NO_IMAGE_KHR;
2033       }
2034
2035       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2036       gl_target = GL_TEXTURE_CUBE_MAP;
2037       break;
2038    default:
2039       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2040       return EGL_NO_IMAGE_KHR;
2041    }
2042
2043    dri2_img = malloc(sizeof *dri2_img);
2044    if (!dri2_img) {
2045       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2046       return EGL_NO_IMAGE_KHR;
2047    }
2048
2049    _eglInitImage(&dri2_img->base, disp);
2050
2051    dri2_img->dri_image =
2052       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2053                                               gl_target,
2054                                               texture,
2055                                               depth,
2056                                               attrs.GLTextureLevel,
2057                                               &error,
2058                                               dri2_img);
2059    dri2_create_image_khr_texture_error(error);
2060
2061    if (!dri2_img->dri_image) {
2062       free(dri2_img);
2063       return EGL_NO_IMAGE_KHR;
2064    }
2065    return &dri2_img->base;
2066 }
2067
2068 static EGLBoolean
2069 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2070                    EGLint attribute, EGLint *value)
2071 {
2072    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2073    if (!dri2_dpy->vtbl->query_surface)
2074       return _eglQuerySurface(drv, disp, surf, attribute, value);
2075    return dri2_dpy->vtbl->query_surface(drv, disp, surf, attribute, value);
2076 }
2077
2078 static struct wl_buffer*
2079 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *disp,
2080                                       _EGLImage *img)
2081 {
2082    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2083    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, disp, img);
2084 }
2085
2086 #ifdef HAVE_LIBDRM
2087 static _EGLImage *
2088 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2089                                   EGLClientBuffer buffer, const EGLint *attr_list)
2090 {
2091    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2092    EGLint format, name, pitch;
2093    _EGLImageAttribs attrs;
2094    __DRIimage *dri_image;
2095
2096    name = (EGLint) (uintptr_t) buffer;
2097
2098    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2099       return NULL;
2100
2101    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2102        attrs.DRMBufferStrideMESA <= 0) {
2103       _eglError(EGL_BAD_PARAMETER,
2104                 "bad width, height or stride");
2105       return NULL;
2106    }
2107
2108    switch (attrs.DRMBufferFormatMESA) {
2109    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2110       format = __DRI_IMAGE_FORMAT_ARGB8888;
2111       pitch = attrs.DRMBufferStrideMESA;
2112       break;
2113    default:
2114       _eglError(EGL_BAD_PARAMETER,
2115                 "dri2_create_image_khr: unsupported pixmap depth");
2116       return NULL;
2117    }
2118
2119    dri_image =
2120       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2121                                            attrs.Width,
2122                                            attrs.Height,
2123                                            format,
2124                                            name,
2125                                            pitch,
2126                                            NULL);
2127
2128    return dri2_create_image_from_dri(disp, dri_image);
2129 }
2130
2131 static EGLBoolean
2132 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2133 {
2134    /**
2135      * The spec says:
2136      *
2137      * "Required attributes and their values are as follows:
2138      *
2139      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2140      *
2141      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2142      *    by drm_fourcc.h and used as the pixel_format parameter of the
2143      *    drm_mode_fb_cmd2 ioctl."
2144      *
2145      * and
2146      *
2147      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2148      *    incomplete, EGL_BAD_PARAMETER is generated."
2149      */
2150    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2151        !attrs->DMABufFourCC.IsPresent)
2152       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2153
2154    /**
2155     * Also:
2156     *
2157     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2158     *  specified for a plane's pitch or offset isn't supported by EGL,
2159     *  EGL_BAD_ACCESS is generated."
2160     */
2161    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2162       if (attrs->DMABufPlanePitches[i].IsPresent &&
2163           attrs->DMABufPlanePitches[i].Value <= 0)
2164          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2165    }
2166
2167    /**
2168     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2169     * attribute values may be given.
2170     *
2171     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2172     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2173     */
2174    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2175       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2176           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2177          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2178    }
2179
2180    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2181     * mandate it, we only accept the same modifier across all planes. */
2182    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2183       if (attrs->DMABufPlaneFds[i].IsPresent) {
2184          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2185                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2186              (attrs->DMABufPlaneModifiersLo[0].Value !=
2187                attrs->DMABufPlaneModifiersLo[i].Value) ||
2188              (attrs->DMABufPlaneModifiersHi[0].Value !=
2189                attrs->DMABufPlaneModifiersHi[i].Value))
2190             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2191       }
2192    }
2193
2194    return EGL_TRUE;
2195 }
2196
2197 /* Returns the total number of planes for the format or zero if it isn't a
2198  * valid fourcc format.
2199  */
2200 static unsigned
2201 dri2_num_fourcc_format_planes(EGLint format)
2202 {
2203    switch (format) {
2204    case DRM_FORMAT_R8:
2205    case DRM_FORMAT_RG88:
2206    case DRM_FORMAT_GR88:
2207    case DRM_FORMAT_R16:
2208    case DRM_FORMAT_GR1616:
2209    case DRM_FORMAT_RGB332:
2210    case DRM_FORMAT_BGR233:
2211    case DRM_FORMAT_XRGB4444:
2212    case DRM_FORMAT_XBGR4444:
2213    case DRM_FORMAT_RGBX4444:
2214    case DRM_FORMAT_BGRX4444:
2215    case DRM_FORMAT_ARGB4444:
2216    case DRM_FORMAT_ABGR4444:
2217    case DRM_FORMAT_RGBA4444:
2218    case DRM_FORMAT_BGRA4444:
2219    case DRM_FORMAT_XRGB1555:
2220    case DRM_FORMAT_XBGR1555:
2221    case DRM_FORMAT_RGBX5551:
2222    case DRM_FORMAT_BGRX5551:
2223    case DRM_FORMAT_ARGB1555:
2224    case DRM_FORMAT_ABGR1555:
2225    case DRM_FORMAT_RGBA5551:
2226    case DRM_FORMAT_BGRA5551:
2227    case DRM_FORMAT_RGB565:
2228    case DRM_FORMAT_BGR565:
2229    case DRM_FORMAT_RGB888:
2230    case DRM_FORMAT_BGR888:
2231    case DRM_FORMAT_XRGB8888:
2232    case DRM_FORMAT_XBGR8888:
2233    case DRM_FORMAT_RGBX8888:
2234    case DRM_FORMAT_BGRX8888:
2235    case DRM_FORMAT_ARGB8888:
2236    case DRM_FORMAT_ABGR8888:
2237    case DRM_FORMAT_RGBA8888:
2238    case DRM_FORMAT_BGRA8888:
2239    case DRM_FORMAT_XRGB2101010:
2240    case DRM_FORMAT_XBGR2101010:
2241    case DRM_FORMAT_RGBX1010102:
2242    case DRM_FORMAT_BGRX1010102:
2243    case DRM_FORMAT_ARGB2101010:
2244    case DRM_FORMAT_ABGR2101010:
2245    case DRM_FORMAT_RGBA1010102:
2246    case DRM_FORMAT_BGRA1010102:
2247    case DRM_FORMAT_YUYV:
2248    case DRM_FORMAT_YVYU:
2249    case DRM_FORMAT_UYVY:
2250    case DRM_FORMAT_VYUY:
2251    case DRM_FORMAT_AYUV:
2252    case DRM_FORMAT_XYUV8888:
2253       return 1;
2254
2255    case DRM_FORMAT_NV12:
2256    case DRM_FORMAT_NV21:
2257    case DRM_FORMAT_NV16:
2258    case DRM_FORMAT_NV61:
2259    case DRM_FORMAT_P010:
2260    case DRM_FORMAT_P012:
2261    case DRM_FORMAT_P016:
2262       return 2;
2263
2264    case DRM_FORMAT_YUV410:
2265    case DRM_FORMAT_YVU410:
2266    case DRM_FORMAT_YUV411:
2267    case DRM_FORMAT_YVU411:
2268    case DRM_FORMAT_YUV420:
2269    case DRM_FORMAT_YVU420:
2270    case DRM_FORMAT_YUV422:
2271    case DRM_FORMAT_YVU422:
2272    case DRM_FORMAT_YUV444:
2273    case DRM_FORMAT_YVU444:
2274       return 3;
2275
2276    default:
2277       return 0;
2278    }
2279 }
2280
2281 /* Returns the total number of file descriptors. Zero indicates an error. */
2282 static unsigned
2283 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2284 {
2285    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2286    if (plane_n == 0) {
2287       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2288       return 0;
2289    }
2290
2291    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2292       /**
2293        * The modifiers extension spec says:
2294        *
2295        * "Modifiers may modify any attribute of a buffer import, including
2296        *  but not limited to adding extra planes to a format which
2297        *  otherwise does not have those planes. As an example, a modifier
2298        *  may add a plane for an external compression buffer to a
2299        *  single-plane format. The exact meaning and effect of any
2300        *  modifier is canonically defined by drm_fourcc.h, not as part of
2301        *  this extension."
2302        */
2303       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2304           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2305          plane_n = i + 1;
2306       }
2307    }
2308
2309    /**
2310      * The spec says:
2311      *
2312      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2313      *    incomplete, EGL_BAD_PARAMETER is generated."
2314      */
2315    for (unsigned i = 0; i < plane_n; ++i) {
2316       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2317           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2318           !attrs->DMABufPlanePitches[i].IsPresent) {
2319          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2320          return 0;
2321       }
2322    }
2323
2324    /**
2325     * The spec also says:
2326     *
2327     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2328     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2329     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2330     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2331     */
2332    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2333       if (attrs->DMABufPlaneFds[i].IsPresent ||
2334           attrs->DMABufPlaneOffsets[i].IsPresent ||
2335           attrs->DMABufPlanePitches[i].IsPresent) {
2336          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2337          return 0;
2338       }
2339    }
2340
2341    return plane_n;
2342 }
2343
2344 static EGLBoolean
2345 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2346                             EGLint max, EGLint *formats, EGLint *count)
2347 {
2348    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2349    if (max < 0 || (max > 0 && formats == NULL))
2350       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2351
2352    if (dri2_dpy->image->base.version < 15 ||
2353        dri2_dpy->image->queryDmaBufFormats == NULL)
2354       return EGL_FALSE;
2355
2356    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2357                                             formats, count))
2358       return EGL_FALSE;
2359
2360    if (max > 0) {
2361       /* Assert that all of the formats returned are actually fourcc formats.
2362        * Some day, if we want the internal interface function to be able to
2363        * return the fake fourcc formats defined in dri_interface.h, we'll have
2364        * to do something more clever here to pair the list down to just real
2365        * fourcc formats so that we don't leak the fake internal ones.
2366        */
2367       for (int i = 0; i < *count; i++) {
2368          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2369       }
2370    }
2371
2372    return EGL_TRUE;
2373 }
2374
2375 static EGLBoolean
2376 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2377                              EGLint max, EGLuint64KHR *modifiers,
2378                              EGLBoolean *external_only, EGLint *count)
2379 {
2380    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2381
2382    if (dri2_num_fourcc_format_planes(format) == 0)
2383       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2384
2385    if (max < 0)
2386       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2387
2388    if (max > 0 && modifiers == NULL)
2389       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2390
2391    if (dri2_dpy->image->base.version < 15 ||
2392        dri2_dpy->image->queryDmaBufModifiers == NULL)
2393       return EGL_FALSE;
2394
2395    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2396                                              max, modifiers,
2397                                              (unsigned int *) external_only,
2398                                              count) == false)
2399       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2400
2401    return EGL_TRUE;
2402 }
2403
2404 /**
2405  * The spec says:
2406  *
2407  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2408  *  EGL will take a reference to the dma_buf(s) which it will release at any
2409  *  time while the EGLDisplay is initialized. It is the responsibility of the
2410  *  application to close the dma_buf file descriptors."
2411  *
2412  * Therefore we must never close or otherwise modify the file descriptors.
2413  */
2414 _EGLImage *
2415 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2416                           EGLClientBuffer buffer, const EGLint *attr_list)
2417 {
2418    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2419    _EGLImage *res;
2420    _EGLImageAttribs attrs;
2421    __DRIimage *dri_image;
2422    unsigned num_fds;
2423    int fds[DMA_BUF_MAX_PLANES];
2424    int pitches[DMA_BUF_MAX_PLANES];
2425    int offsets[DMA_BUF_MAX_PLANES];
2426    uint64_t modifier;
2427    bool has_modifier = false;
2428    unsigned error;
2429
2430    /**
2431     * The spec says:
2432     *
2433     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2434     *     error EGL_BAD_PARAMETER is generated."
2435     */
2436    if (buffer != NULL) {
2437       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2438       return NULL;
2439    }
2440
2441    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2442       return NULL;
2443
2444    if (!dri2_check_dma_buf_attribs(&attrs))
2445       return NULL;
2446
2447    num_fds = dri2_check_dma_buf_format(&attrs);
2448    if (!num_fds)
2449       return NULL;
2450
2451    for (unsigned i = 0; i < num_fds; ++i) {
2452       fds[i] = attrs.DMABufPlaneFds[i].Value;
2453       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2454       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2455    }
2456
2457    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2458     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2459     * attrs.DMABufPlaneModifiersHi[0] */
2460    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2461       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2462                                       attrs.DMABufPlaneModifiersLo[0].Value);
2463       has_modifier = true;
2464    }
2465
2466    if (has_modifier) {
2467       if (dri2_dpy->image->base.version < 15 ||
2468           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2469          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2470          return EGL_NO_IMAGE_KHR;
2471       }
2472       dri_image =
2473          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2474             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2475             modifier, fds, num_fds, pitches, offsets,
2476             attrs.DMABufYuvColorSpaceHint.Value,
2477             attrs.DMABufSampleRangeHint.Value,
2478             attrs.DMABufChromaHorizontalSiting.Value,
2479             attrs.DMABufChromaVerticalSiting.Value,
2480             &error,
2481             NULL);
2482    }
2483    else {
2484       dri_image =
2485          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2486             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2487             fds, num_fds, pitches, offsets,
2488             attrs.DMABufYuvColorSpaceHint.Value,
2489             attrs.DMABufSampleRangeHint.Value,
2490             attrs.DMABufChromaHorizontalSiting.Value,
2491             attrs.DMABufChromaVerticalSiting.Value,
2492             &error,
2493             NULL);
2494    }
2495    dri2_create_image_khr_texture_error(error);
2496
2497    if (!dri_image)
2498       return EGL_NO_IMAGE_KHR;
2499
2500    res = dri2_create_image_from_dri(disp, dri_image);
2501
2502    return res;
2503 }
2504 static _EGLImage *
2505 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2506                            const EGLint *attr_list)
2507 {
2508    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2509    struct dri2_egl_image *dri2_img;
2510    _EGLImageAttribs attrs;
2511    unsigned int dri_use, valid_mask;
2512    int format;
2513
2514    (void) drv;
2515
2516    if (!attr_list) {
2517       _eglError(EGL_BAD_PARAMETER, __func__);
2518       return EGL_NO_IMAGE_KHR;
2519    }
2520
2521    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2522       return EGL_NO_IMAGE_KHR;
2523
2524    if (attrs.Width <= 0 || attrs.Height <= 0) {
2525       _eglError(EGL_BAD_PARAMETER, __func__);
2526       return EGL_NO_IMAGE_KHR;
2527    }
2528
2529    switch (attrs.DRMBufferFormatMESA) {
2530    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2531       format = __DRI_IMAGE_FORMAT_ARGB8888;
2532       break;
2533    default:
2534       _eglError(EGL_BAD_PARAMETER, __func__);
2535       return EGL_NO_IMAGE_KHR;
2536    }
2537
2538    valid_mask =
2539       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2540       EGL_DRM_BUFFER_USE_SHARE_MESA |
2541       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2542    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2543       _eglError(EGL_BAD_PARAMETER, __func__);
2544       return EGL_NO_IMAGE_KHR;
2545    }
2546
2547    dri_use = 0;
2548    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2549       dri_use |= __DRI_IMAGE_USE_SHARE;
2550    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2551       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2552    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2553       dri_use |= __DRI_IMAGE_USE_CURSOR;
2554
2555    dri2_img = malloc(sizeof *dri2_img);
2556    if (!dri2_img) {
2557       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2558       return EGL_NO_IMAGE_KHR;
2559    }
2560
2561    _eglInitImage(&dri2_img->base, disp);
2562
2563    dri2_img->dri_image =
2564       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2565                                    attrs.Width, attrs.Height,
2566                                    format, dri_use, dri2_img);
2567    if (dri2_img->dri_image == NULL) {
2568       free(dri2_img);
2569        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2570       return EGL_NO_IMAGE_KHR;
2571    }
2572
2573    return &dri2_img->base;
2574 }
2575
2576 static EGLBoolean
2577 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2578                           EGLint *name, EGLint *handle, EGLint *stride)
2579 {
2580    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2581    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2582
2583    (void) drv;
2584
2585    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2586                                             __DRI_IMAGE_ATTRIB_NAME, name))
2587       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2588
2589    if (handle)
2590       dri2_dpy->image->queryImage(dri2_img->dri_image,
2591                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2592
2593    if (stride)
2594       dri2_dpy->image->queryImage(dri2_img->dri_image,
2595                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2596
2597    return EGL_TRUE;
2598 }
2599
2600 /**
2601  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
2602
2603  * The spec provides a boolean return for the driver to reject exporting for
2604  * basically any reason, but doesn't specify any particular error cases.  For
2605  * now, we just fail if we don't have a DRM fourcc for the format.
2606  */
2607 static bool
2608 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
2609 {
2610    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2611    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2612    EGLint fourcc;
2613
2614    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
2615                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
2616       return false;
2617    }
2618
2619    return true;
2620 }
2621
2622 static EGLBoolean
2623 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2624                                      _EGLImage *img,
2625                                      EGLint *fourcc, EGLint *nplanes,
2626                                      EGLuint64KHR *modifiers)
2627 {
2628    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2629    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2630
2631    (void) drv;
2632
2633    if (!dri2_can_export_dma_buf_image(disp, img))
2634       return EGL_FALSE;
2635
2636    if (nplanes)
2637       dri2_dpy->image->queryImage(dri2_img->dri_image,
2638                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2639    if (fourcc)
2640       dri2_dpy->image->queryImage(dri2_img->dri_image,
2641                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2642
2643    if (modifiers)
2644       *modifiers = 0;
2645
2646    return EGL_TRUE;
2647 }
2648
2649 static EGLBoolean
2650 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2651                                int *fds, EGLint *strides, EGLint *offsets)
2652 {
2653    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2654    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2655    EGLint nplanes;
2656
2657    (void) drv;
2658
2659    if (!dri2_can_export_dma_buf_image(disp, img))
2660       return EGL_FALSE;
2661
2662    /* EGL_MESA_image_dma_buf_export spec says:
2663     *    "If the number of fds is less than the number of planes, then
2664     *    subsequent fd slots should contain -1."
2665     */
2666    if (fds) {
2667       /* Query nplanes so that we know how big the given array is. */
2668       dri2_dpy->image->queryImage(dri2_img->dri_image,
2669                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
2670       memset(fds, -1, nplanes * sizeof(int));
2671    }
2672
2673    /* rework later to provide multiple fds/strides/offsets */
2674    if (fds)
2675       dri2_dpy->image->queryImage(dri2_img->dri_image,
2676                                   __DRI_IMAGE_ATTRIB_FD, fds);
2677
2678    if (strides)
2679       dri2_dpy->image->queryImage(dri2_img->dri_image,
2680                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2681
2682    if (offsets) {
2683       int img_offset;
2684       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2685                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2686       if (ret)
2687          offsets[0] = img_offset;
2688       else
2689          offsets[0] = 0;
2690    }
2691
2692    return EGL_TRUE;
2693 }
2694
2695 #endif
2696
2697 _EGLImage *
2698 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2699                       _EGLContext *ctx, EGLenum target,
2700                       EGLClientBuffer buffer, const EGLint *attr_list)
2701 {
2702    (void) drv;
2703
2704    switch (target) {
2705    case EGL_GL_TEXTURE_2D_KHR:
2706    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2707    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2708    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2709    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2710    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2711    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2712    case EGL_GL_TEXTURE_3D_KHR:
2713       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2714    case EGL_GL_RENDERBUFFER_KHR:
2715       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2716 #ifdef HAVE_LIBDRM
2717    case EGL_DRM_BUFFER_MESA:
2718       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2719    case EGL_LINUX_DMA_BUF_EXT:
2720       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2721 #endif
2722 #ifdef HAVE_WAYLAND_PLATFORM
2723    case EGL_WAYLAND_BUFFER_WL:
2724       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2725 #endif
2726    default:
2727       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2728       return EGL_NO_IMAGE_KHR;
2729    }
2730 }
2731
2732 static EGLBoolean
2733 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2734 {
2735    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2736    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2737
2738    (void) drv;
2739
2740    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2741    free(dri2_img);
2742
2743    return EGL_TRUE;
2744 }
2745
2746 #ifdef HAVE_WAYLAND_PLATFORM
2747
2748 static void
2749 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2750                          struct wl_drm_buffer *buffer)
2751 {
2752    _EGLDisplay *disp = user_data;
2753    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2754    __DRIimage *img;
2755    int dri_components = 0;
2756
2757    if (fd == -1)
2758       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2759                                                   buffer->width,
2760                                                   buffer->height,
2761                                                   buffer->format,
2762                                                   (int*)&name, 1,
2763                                                   buffer->stride,
2764                                                   buffer->offset,
2765                                                   NULL);
2766    else
2767       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2768                                                 buffer->width,
2769                                                 buffer->height,
2770                                                 buffer->format,
2771                                                 &fd, 1,
2772                                                 buffer->stride,
2773                                                 buffer->offset,
2774                                                 NULL);
2775
2776    if (img == NULL)
2777       return;
2778
2779    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2780
2781    buffer->driver_format = NULL;
2782    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2783       if (wl_drm_components[i].dri_components == dri_components)
2784          buffer->driver_format = &wl_drm_components[i];
2785
2786    if (buffer->driver_format == NULL)
2787       dri2_dpy->image->destroyImage(img);
2788    else
2789       buffer->driver_buffer = img;
2790 }
2791
2792 static void
2793 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2794 {
2795    _EGLDisplay *disp = user_data;
2796    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2797
2798    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2799 }
2800
2801 static EGLBoolean
2802 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2803                              struct wl_display *wl_dpy)
2804 {
2805    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2806    const struct wayland_drm_callbacks wl_drm_callbacks = {
2807       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2808       .reference_buffer = dri2_wl_reference_buffer,
2809       .release_buffer = dri2_wl_release_buffer,
2810       .is_format_supported = dri2_wl_is_format_supported
2811    };
2812    int flags = 0;
2813    uint64_t cap;
2814
2815    (void) drv;
2816
2817    if (dri2_dpy->wl_server_drm)
2818            return EGL_FALSE;
2819
2820    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2821        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2822        dri2_dpy->image->base.version >= 7 &&
2823        dri2_dpy->image->createImageFromFds != NULL)
2824       flags |= WAYLAND_DRM_PRIME;
2825
2826    dri2_dpy->wl_server_drm =
2827            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2828                             &wl_drm_callbacks, disp, flags);
2829
2830    if (!dri2_dpy->wl_server_drm)
2831            return EGL_FALSE;
2832
2833 #ifdef HAVE_DRM_PLATFORM
2834    /* We have to share the wl_drm instance with gbm, so gbm can convert
2835     * wl_buffers to gbm bos. */
2836    if (dri2_dpy->gbm_dri)
2837       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2838 #endif
2839
2840    return EGL_TRUE;
2841 }
2842
2843 static EGLBoolean
2844 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2845                                struct wl_display *wl_dpy)
2846 {
2847    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2848
2849    (void) drv;
2850
2851    if (!dri2_dpy->wl_server_drm)
2852            return EGL_FALSE;
2853
2854    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2855    dri2_dpy->wl_server_drm = NULL;
2856
2857    return EGL_TRUE;
2858 }
2859
2860 static EGLBoolean
2861 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2862                              struct wl_resource *buffer_resource,
2863                              EGLint attribute, EGLint *value)
2864 {
2865    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2866    struct wl_drm_buffer *buffer;
2867    const struct wl_drm_components_descriptor *format;
2868
2869    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2870    if (!buffer)
2871       return EGL_FALSE;
2872
2873    format = buffer->driver_format;
2874    switch (attribute) {
2875    case EGL_TEXTURE_FORMAT:
2876       *value = format->components;
2877       return EGL_TRUE;
2878    case EGL_WIDTH:
2879       *value = buffer->width;
2880       return EGL_TRUE;
2881    case EGL_HEIGHT:
2882       *value = buffer->height;
2883       return EGL_TRUE;
2884    }
2885
2886    return EGL_FALSE;
2887 }
2888 #endif
2889
2890 static void
2891 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2892 {
2893    p_atomic_inc(&sync->refcount);
2894 }
2895
2896 static void
2897 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2898                     struct dri2_egl_sync *dri2_sync)
2899 {
2900    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2901       switch (dri2_sync->base.Type) {
2902       case EGL_SYNC_REUSABLE_KHR:
2903          cnd_destroy(&dri2_sync->cond);
2904          break;
2905       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2906          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2907             close(dri2_sync->base.SyncFd);
2908          break;
2909       default:
2910          break;
2911       }
2912
2913       if (dri2_sync->fence)
2914          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2915
2916       free(dri2_sync);
2917    }
2918 }
2919
2920 static _EGLSync *
2921 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *disp,
2922                  EGLenum type, const EGLAttrib *attrib_list)
2923 {
2924    _EGLContext *ctx = _eglGetCurrentContext();
2925    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2926    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2927    struct dri2_egl_sync *dri2_sync;
2928    EGLint ret;
2929    pthread_condattr_t attr;
2930
2931    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2932    if (!dri2_sync) {
2933       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2934       return NULL;
2935    }
2936
2937    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
2938       free(dri2_sync);
2939       return NULL;
2940    }
2941
2942    switch (type) {
2943    case EGL_SYNC_FENCE_KHR:
2944       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2945       if (!dri2_sync->fence) {
2946          /* Why did it fail? DRI doesn't return an error code, so we emit
2947           * a generic EGL error that doesn't communicate user error.
2948           */
2949          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2950          free(dri2_sync);
2951          return NULL;
2952       }
2953       break;
2954
2955    case EGL_SYNC_CL_EVENT_KHR:
2956       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2957                                  dri2_dpy->dri_screen,
2958                                  dri2_sync->base.CLEvent);
2959       /* this can only happen if the cl_event passed in is invalid. */
2960       if (!dri2_sync->fence) {
2961          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2962          free(dri2_sync);
2963          return NULL;
2964       }
2965
2966       /* the initial status must be "signaled" if the cl_event is signaled */
2967       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2968                                             dri2_sync->fence, 0, 0))
2969          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2970       break;
2971
2972    case EGL_SYNC_REUSABLE_KHR:
2973       /* intialize attr */
2974       ret = pthread_condattr_init(&attr);
2975
2976       if (ret) {
2977          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2978          free(dri2_sync);
2979          return NULL;
2980       }
2981
2982       /* change clock attribute to CLOCK_MONOTONIC */
2983       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2984
2985       if (ret) {
2986          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2987          free(dri2_sync);
2988          return NULL;
2989       }
2990
2991       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2992
2993       if (ret) {
2994          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2995          free(dri2_sync);
2996          return NULL;
2997       }
2998
2999       /* initial status of reusable sync must be "unsignaled" */
3000       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3001       break;
3002
3003    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3004       if (dri2_dpy->fence->create_fence_fd) {
3005          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3006                                     dri2_ctx->dri_context,
3007                                     dri2_sync->base.SyncFd);
3008       }
3009       if (!dri2_sync->fence) {
3010          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3011          free(dri2_sync);
3012          return NULL;
3013       }
3014       break;
3015    }
3016
3017    p_atomic_set(&dri2_sync->refcount, 1);
3018    return &dri2_sync->base;
3019 }
3020
3021 static EGLBoolean
3022 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3023 {
3024    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3025    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3026    EGLint ret = EGL_TRUE;
3027    EGLint err;
3028
3029    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3030     * then unlock all threads possibly blocked by the reusable sync before
3031     * destroying it.
3032     */
3033    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3034        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3035       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3036       /* unblock all threads currently blocked by sync */
3037       err = cnd_broadcast(&dri2_sync->cond);
3038
3039       if (err) {
3040          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3041          ret = EGL_FALSE;
3042       }
3043    }
3044
3045    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3046
3047    return ret;
3048 }
3049
3050 static EGLint
3051 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3052 {
3053    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3054    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3055
3056    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3057
3058    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3059       /* try to retrieve the actual native fence fd.. if rendering is
3060        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3061        */
3062       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3063                                                    dri2_sync->fence);
3064    }
3065
3066    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3067       /* if native fence fd still not created, return an error: */
3068       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3069       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3070    }
3071
3072    return dup(sync->SyncFd);
3073 }
3074
3075 static void
3076 dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *disp,
3077                           EGLSetBlobFuncANDROID set,
3078                           EGLGetBlobFuncANDROID get)
3079 {
3080    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3081    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3082                                    disp->BlobCacheSet,
3083                                    disp->BlobCacheGet);
3084 }
3085
3086 static EGLint
3087 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3088                       EGLint flags, EGLTime timeout)
3089 {
3090    _EGLContext *ctx = _eglGetCurrentContext();
3091    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3092    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3093    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3094    unsigned wait_flags = 0;
3095
3096    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3097
3098    /* The EGL_KHR_fence_sync spec states:
3099     *
3100     *    "If no context is current for the bound API,
3101     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3102     */
3103    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3104       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3105
3106    /* the sync object should take a reference while waiting */
3107    dri2_egl_ref_sync(dri2_sync);
3108
3109    switch (sync->Type) {
3110    case EGL_SYNC_FENCE_KHR:
3111    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3112    case EGL_SYNC_CL_EVENT_KHR:
3113       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3114                                          dri2_sync->fence, wait_flags,
3115                                          timeout))
3116          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3117       else
3118          ret = EGL_TIMEOUT_EXPIRED_KHR;
3119       break;
3120
3121    case EGL_SYNC_REUSABLE_KHR:
3122       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3123           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3124          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3125          dri2_gl_flush();
3126       }
3127
3128       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3129       if (timeout == EGL_FOREVER_KHR) {
3130          mtx_lock(&dri2_sync->mutex);
3131          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3132          mtx_unlock(&dri2_sync->mutex);
3133       } else {
3134          /* if reusable sync has not been yet signaled */
3135          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3136             /* timespecs for cnd_timedwait */
3137             struct timespec current;
3138             struct timespec expire;
3139
3140             /* We override the clock to monotonic when creating the condition
3141              * variable. */
3142             clock_gettime(CLOCK_MONOTONIC, &current);
3143
3144             /* calculating when to expire */
3145             expire.tv_nsec = timeout % 1000000000L;
3146             expire.tv_sec = timeout / 1000000000L;
3147
3148             expire.tv_nsec += current.tv_nsec;
3149             expire.tv_sec += current.tv_sec;
3150
3151             /* expire.nsec now is a number between 0 and 1999999998 */
3152             if (expire.tv_nsec > 999999999L) {
3153                expire.tv_sec++;
3154                expire.tv_nsec -= 1000000000L;
3155             }
3156
3157             mtx_lock(&dri2_sync->mutex);
3158             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3159             mtx_unlock(&dri2_sync->mutex);
3160
3161             if (ret == thrd_busy) {
3162                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3163                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3164                } else {
3165                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3166                   ret = EGL_FALSE;
3167                }
3168             }
3169          }
3170       }
3171       break;
3172   }
3173   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3174
3175   return ret;
3176 }
3177
3178 static EGLBoolean
3179 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3180                       EGLenum mode)
3181 {
3182    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3183    EGLint ret;
3184
3185    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3186       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3187
3188    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3189       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3190
3191    dri2_sync->base.SyncStatus = mode;
3192
3193    if (mode == EGL_SIGNALED_KHR) {
3194       ret = cnd_broadcast(&dri2_sync->cond);
3195
3196       /* fail to broadcast */
3197       if (ret)
3198          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3199    }
3200
3201    return EGL_TRUE;
3202 }
3203
3204 static EGLint
3205 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3206 {
3207    _EGLContext *ctx = _eglGetCurrentContext();
3208    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3209    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3210    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3211
3212    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3213                                      dri2_sync->fence, 0);
3214    return EGL_TRUE;
3215 }
3216
3217 static int
3218 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3219                                struct mesa_glinterop_device_info *out)
3220 {
3221    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3222    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3223
3224    if (!dri2_dpy->interop)
3225       return MESA_GLINTEROP_UNSUPPORTED;
3226
3227    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3228 }
3229
3230 static int
3231 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3232                            struct mesa_glinterop_export_in *in,
3233                            struct mesa_glinterop_export_out *out)
3234 {
3235    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3236    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3237
3238    if (!dri2_dpy->interop)
3239       return MESA_GLINTEROP_UNSUPPORTED;
3240
3241    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3242 }
3243
3244 /**
3245  * This is the main entrypoint into the driver, called by libEGL.
3246  * Gets an _EGLDriver object and init its dispatch table.
3247  */
3248 void
3249 _eglInitDriver(_EGLDriver *dri2_drv)
3250 {
3251    dri2_drv->API.Initialize = dri2_initialize;
3252    dri2_drv->API.Terminate = dri2_terminate;
3253    dri2_drv->API.CreateContext = dri2_create_context;
3254    dri2_drv->API.DestroyContext = dri2_destroy_context;
3255    dri2_drv->API.MakeCurrent = dri2_make_current;
3256    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3257    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3258    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3259    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3260    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3261    dri2_drv->API.WaitClient = dri2_wait_client;
3262    dri2_drv->API.WaitNative = dri2_wait_native;
3263    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3264    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3265    dri2_drv->API.SwapInterval = dri2_swap_interval;
3266    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3267    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3268    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3269    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3270    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3271    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3272    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3273    dri2_drv->API.CreateImageKHR = dri2_create_image;
3274    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3275    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3276    dri2_drv->API.QuerySurface = dri2_query_surface;
3277    dri2_drv->API.QueryDriverName = dri2_query_driver_name;
3278    dri2_drv->API.QueryDriverConfig = dri2_query_driver_config;
3279 #ifdef HAVE_LIBDRM
3280    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3281    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3282    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3283    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3284    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3285    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3286 #endif
3287 #ifdef HAVE_WAYLAND_PLATFORM
3288    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3289    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3290    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3291 #endif
3292    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3293    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3294    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3295    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3296    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3297    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3298    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3299    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3300    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3301    dri2_drv->API.SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs;
3302 }