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/os_file.h"
  66 #include "util/u_atomic.h"
  67 #include "util/u_vector.h"
  68 #include "mapi/glapi/glapi.h"
  69 #include "util/bitscan.h"
  70 #include "util/u_math.h"
  71
  72 /* Additional definitions not yet in the drm_fourcc.h.
  73  */
  74 #ifndef DRM_FORMAT_P010
  75 #define DRM_FORMAT_P010          fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cb:Cr plane 10 bits per channel */
  76 #endif
  77
  78 #ifndef DRM_FORMAT_P012
  79 #define DRM_FORMAT_P012          fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cb:Cr plane 12 bits per channel */
  80 #endif
  81
  82 #ifndef DRM_FORMAT_P016
  83 #define DRM_FORMAT_P016          fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cb:Cr plane 16 bits per channel */
  84 #endif
  85
  86 #define NUM_ATTRIBS 12
  87
  88 static const struct dri2_pbuffer_visual {
  89    const char *format_name;
  90    unsigned int dri_image_format;
  91    int rgba_shifts[4];
  92    unsigned int rgba_sizes[4];
  93 } dri2_pbuffer_visuals[] = {
  94    {
  95       "ABGR16F",
  96       __DRI_IMAGE_FORMAT_ABGR16161616F,
  97       { 0, 16, 32, 48 },
  98       { 16, 16, 16, 16 }
  99    },
 100    {
 101       "XBGR16F",
 102       __DRI_IMAGE_FORMAT_XBGR16161616F,
 103       { 0, 16, 32, -1 },
 104       { 16, 16, 16, 0 }
 105    },
 106    {
 107       "A2RGB10",
 108       __DRI_IMAGE_FORMAT_ARGB2101010,
 109       { 20, 10, 0, 30 },
 110       { 10, 10, 10, 2 }
 111    },
 112    {
 113       "X2RGB10",
 114       __DRI_IMAGE_FORMAT_XRGB2101010,
 115       { 20, 10, 0, -1 },
 116       { 10, 10, 10, 0 }
 117    },
 118    {
 119       "ARGB8888",
 120       __DRI_IMAGE_FORMAT_ARGB8888,
 121       { 16, 8, 0, 24 },
 122       { 8, 8, 8, 8 }
 123    },
 124    {
 125       "RGB888",
 126       __DRI_IMAGE_FORMAT_XRGB8888,
 127       { 16, 8, 0, -1 },
 128       { 8, 8, 8, 0 }
 129    },
 130    {
 131       "RGB565",
 132       __DRI_IMAGE_FORMAT_RGB565,
 133       { 11, 5, 0, -1 },
 134       { 5, 6, 5, 0 }
 135    },
 136 };
 137
 138 static void
 139 dri_set_background_context(void *loaderPrivate)
 140 {
 141    _EGLContext *ctx = _eglGetCurrentContext();
 142    _EGLThreadInfo *t = _eglGetCurrentThread();
 143
 144    _eglBindContextToThread(ctx, t);
 145 }
 146
 147 static void
 148 dri2_gl_flush()
 149 {
 150    static void (*glFlush)(void);
 151    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 152
 153    mtx_lock(&glFlushMutex);
 154    if (!glFlush)
 155       glFlush = _glapi_get_proc_address("glFlush");
 156    mtx_unlock(&glFlushMutex);
 157
 158    /* if glFlush is not available things are horribly broken */
 159    if (!glFlush) {
 160       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 161       return;
 162    }
 163
 164    glFlush();
 165 }
 166
 167 static GLboolean
 168 dri_is_thread_safe(void *loaderPrivate)
 169 {
 170    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 171    UNUSED _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 172
 173 #ifdef HAVE_X11_PLATFORM
 174    Display *xdpy = (Display*)display->PlatformDisplay;
 175
 176    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 177     * platform
 178     *
 179     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 180     * It wll be NULL if XInitThreads wasn't called.
 181     */
 182    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 183       return false;
 184 #endif
 185
 186 #ifdef HAVE_WAYLAND_PLATFORM
 187    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 188       return true;
 189 #endif
 190
 191    return true;
 192 }
 193
 194 const __DRIbackgroundCallableExtension background_callable_extension = {
 195    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 196
 197    .setBackgroundContext = dri_set_background_context,
 198    .isThreadSafe         = dri_is_thread_safe,
 199 };
 200
 201 const __DRIuseInvalidateExtension use_invalidate = {
 202    .base = { __DRI_USE_INVALIDATE, 1 }
 203 };
 204
 205 static void
 206 dri2_get_pbuffer_drawable_info(__DRIdrawable * draw,
 207                                int *x, int *y, int *w, int *h,
 208                                void *loaderPrivate)
 209 {
 210    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 211
 212    *x = *y = 0;
 213    *w = dri2_surf->base.Width;
 214    *h = dri2_surf->base.Height;
 215 }
 216
 217 static int
 218 dri2_get_bytes_per_pixel(struct dri2_egl_surface *dri2_surf)
 219 {
 220    const int depth = dri2_surf->base.Config->BufferSize;
 221    return depth ? util_next_power_of_two(depth / 8) : 0;
 222 }
 223
 224 static void
 225 dri2_put_image(__DRIdrawable * draw, int op,
 226                int x, int y, int w, int h,
 227                char *data, void *loaderPrivate)
 228 {
 229    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 230    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 231    const int width = dri2_surf->base.Width;
 232    const int height = dri2_surf->base.Height;
 233    const int dst_stride = width*bpp;
 234    const int src_stride = w*bpp;
 235    const int x_offset = x*bpp;
 236    int copy_width = src_stride;
 237
 238    if (!dri2_surf->swrast_device_buffer)
 239       dri2_surf->swrast_device_buffer = malloc(height*dst_stride);
 240
 241    if (dri2_surf->swrast_device_buffer) {
 242       const char *src = data;
 243       char *dst = dri2_surf->swrast_device_buffer;
 244
 245       dst += x_offset;
 246       dst += y*dst_stride;
 247
 248       /* Drivers are allowed to submit OOB PutImage requests, so clip here. */
 249       if (copy_width > dst_stride - x_offset)
 250          copy_width = dst_stride - x_offset;
 251       if (h > height - y)
 252          h = height - y;
 253
 254       for (; 0 < h; --h) {
 255          memcpy(dst, src, copy_width);
 256          dst += dst_stride;
 257          src += src_stride;
 258       }
 259    }
 260 }
 261
 262 static void
 263 dri2_get_image(__DRIdrawable * read,
 264                int x, int y, int w, int h,
 265                char *data, void *loaderPrivate)
 266 {
 267    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 268    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 269    const int width = dri2_surf->base.Width;
 270    const int height = dri2_surf->base.Height;
 271    const int src_stride = width*bpp;
 272    const int dst_stride = w*bpp;
 273    const int x_offset = x*bpp;
 274    int copy_width = dst_stride;
 275    const char *src = dri2_surf->swrast_device_buffer;
 276    char *dst = data;
 277
 278    if (!src) {
 279       memset(data, 0, copy_width * h);
 280       return;
 281    }
 282
 283    src += x_offset;
 284    src += y*src_stride;
 285
 286    /* Drivers are allowed to submit OOB GetImage requests, so clip here. */
 287    if (copy_width > src_stride - x_offset)
 288       copy_width = src_stride - x_offset;
 289    if (h > height - y)
 290       h = height - y;
 291
 292    for (; 0 < h; --h) {
 293       memcpy(dst, src, copy_width);
 294       src += src_stride;
 295       dst += dst_stride;
 296    }
 297
 298 }
 299
 300 /* HACK: technically we should have swrast_null, instead of these.
 301  */
 302 const __DRIswrastLoaderExtension swrast_pbuffer_loader_extension = {
 303    .base            = { __DRI_SWRAST_LOADER, 1 },
 304    .getDrawableInfo = dri2_get_pbuffer_drawable_info,
 305    .putImage        = dri2_put_image,
 306    .getImage        = dri2_get_image,
 307 };
 308
 309 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 310    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 311    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 312    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 313    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 314    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 315    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 316    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 317    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 318    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 319    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 320    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 321    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 322    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 323 };
 324
 325 const __DRIconfig *
 326 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 327                     EGLenum colorspace)
 328 {
 329    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 330    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 331
 332    return conf->dri_config[double_buffer][srgb];
 333 }
 334
 335 static EGLBoolean
 336 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 337 {
 338    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 339       return EGL_FALSE;
 340
 341    if (!_eglMatchConfig(conf, criteria))
 342       return EGL_FALSE;
 343
 344    return EGL_TRUE;
 345 }
 346
 347 void
 348 dri2_get_shifts_and_sizes(const __DRIcoreExtension *core,
 349                           const __DRIconfig *config, int *shifts,
 350                           unsigned int *sizes)
 351 {
 352    unsigned int mask;
 353
 354    if (core->getConfigAttrib(config, __DRI_ATTRIB_RED_SHIFT, (unsigned int *)&shifts[0])) {
 355       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SHIFT, (unsigned int *)&shifts[1]);
 356       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SHIFT, (unsigned int *)&shifts[2]);
 357       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SHIFT, (unsigned int *)&shifts[3]);
 358    } else {
 359       /* Driver isn't exposing shifts, so convert masks to shifts */
 360       core->getConfigAttrib(config, __DRI_ATTRIB_RED_MASK, &mask);
 361       shifts[0] = ffs(mask) - 1;
 362       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_MASK, &mask);
 363       shifts[1] = ffs(mask) - 1;
 364       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_MASK, &mask);
 365       shifts[2] = ffs(mask) - 1;
 366       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_MASK, &mask);
 367       shifts[3] = ffs(mask) - 1;
 368    }
 369
 370    core->getConfigAttrib(config, __DRI_ATTRIB_RED_SIZE, &sizes[0]);
 371    core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SIZE, &sizes[1]);
 372    core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SIZE, &sizes[2]);
 373    core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SIZE, &sizes[3]);
 374 }
 375
 376 void
 377 dri2_get_render_type_float(const __DRIcoreExtension *core,
 378                            const __DRIconfig *config,
 379                            bool *is_float)
 380 {
 381    unsigned int render_type;
 382
 383    core->getConfigAttrib(config, __DRI_ATTRIB_RENDER_TYPE, &render_type);
 384    *is_float = (render_type & __DRI_ATTRIB_FLOAT_BIT) ? true : false;
 385 }
 386
 387 unsigned int
 388 dri2_image_format_for_pbuffer_config(struct dri2_egl_display *dri2_dpy,
 389                                      const __DRIconfig *config)
 390 {
 391    int shifts[4];
 392    unsigned int sizes[4];
 393
 394    dri2_get_shifts_and_sizes(dri2_dpy->core, config, shifts, sizes);
 395
 396    for (unsigned i = 0; i < ARRAY_SIZE(dri2_pbuffer_visuals); ++i) {
 397       const struct dri2_pbuffer_visual *visual = &dri2_pbuffer_visuals[i];
 398
 399       if (shifts[0] == visual->rgba_shifts[0] &&
 400           shifts[1] == visual->rgba_shifts[1] &&
 401           shifts[2] == visual->rgba_shifts[2] &&
 402           shifts[3] == visual->rgba_shifts[3] &&
 403           sizes[0] == visual->rgba_sizes[0] &&
 404           sizes[1] == visual->rgba_sizes[1] &&
 405           sizes[2] == visual->rgba_sizes[2] &&
 406           sizes[3] == visual->rgba_sizes[3]) {
 407          return visual->dri_image_format;
 408       }
 409    }
 410
 411    return __DRI_IMAGE_FORMAT_NONE;
 412 }
 413
 414 struct dri2_egl_config *
 415 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 416                 EGLint surface_type, const EGLint *attr_list,
 417                 const int *rgba_shifts, const unsigned int *rgba_sizes)
 418 {
 419    struct dri2_egl_config *conf;
 420    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 421    _EGLConfig base;
 422    unsigned int attrib, value, double_buffer;
 423    bool srgb = false;
 424    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 425    int dri_shifts[4] = { -1, -1, -1, -1 };
 426    unsigned int dri_sizes[4] = { 0, 0, 0, 0 };
 427    _EGLConfig *matching_config;
 428    EGLint num_configs = 0;
 429    EGLint config_id;
 430
 431    _eglInitConfig(&base, disp, id);
 432
 433    double_buffer = 0;
 434    bind_to_texture_rgb = 0;
 435    bind_to_texture_rgba = 0;
 436
 437    for (int i = 0; i < __DRI_ATTRIB_MAX; ++i) {
 438       if (!dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib, &value))
 439          break;
 440
 441       switch (attrib) {
 442       case __DRI_ATTRIB_RENDER_TYPE:
 443          if (value & __DRI_ATTRIB_FLOAT_BIT)
 444             base.ComponentType = EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT;
 445          if (value & __DRI_ATTRIB_RGBA_BIT)
 446             value = EGL_RGB_BUFFER;
 447          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 448             value = EGL_LUMINANCE_BUFFER;
 449          else
 450             return NULL;
 451          base.ColorBufferType = value;
 452          break;
 453
 454       case __DRI_ATTRIB_CONFIG_CAVEAT:
 455          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 456             value = EGL_NON_CONFORMANT_CONFIG;
 457          else if (value & __DRI_ATTRIB_SLOW_BIT)
 458             value = EGL_SLOW_CONFIG;
 459          else
 460             value = EGL_NONE;
 461          base.ConfigCaveat = value;
 462          break;
 463
 464       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 465          bind_to_texture_rgb = value;
 466          break;
 467
 468       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 469          bind_to_texture_rgba = value;
 470          break;
 471
 472       case __DRI_ATTRIB_DOUBLE_BUFFER:
 473          double_buffer = value;
 474          break;
 475
 476       case __DRI_ATTRIB_RED_SIZE:
 477          dri_sizes[0] = value;
 478          base.RedSize = value;
 479          break;
 480
 481       case __DRI_ATTRIB_RED_MASK:
 482          dri_shifts[0] = ffs(value) - 1;
 483          break;
 484
 485       case __DRI_ATTRIB_RED_SHIFT:
 486          dri_shifts[0] = value;
 487          break;
 488
 489       case __DRI_ATTRIB_GREEN_SIZE:
 490          dri_sizes[1] = value;
 491          base.GreenSize = value;
 492          break;
 493
 494       case __DRI_ATTRIB_GREEN_MASK:
 495          dri_shifts[1] = ffs(value) - 1;
 496          break;
 497
 498       case __DRI_ATTRIB_GREEN_SHIFT:
 499          dri_shifts[1] = value;
 500          break;
 501
 502       case __DRI_ATTRIB_BLUE_SIZE:
 503          dri_sizes[2] = value;
 504          base.BlueSize = value;
 505          break;
 506
 507       case __DRI_ATTRIB_BLUE_MASK:
 508          dri_shifts[2] = ffs(value) - 1;
 509          break;
 510
 511       case __DRI_ATTRIB_BLUE_SHIFT:
 512          dri_shifts[2] = value;
 513          break;
 514
 515      case __DRI_ATTRIB_ALPHA_SIZE:
 516          dri_sizes[3] = value;
 517          base.AlphaSize = value;
 518          break;
 519
 520       case __DRI_ATTRIB_ALPHA_MASK:
 521          dri_shifts[3] = ffs(value) - 1;
 522          break;
 523
 524       case __DRI_ATTRIB_ALPHA_SHIFT:
 525          dri_shifts[3] = value;
 526          break;
 527
 528       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 529       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 530       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 531       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 532          /* Don't expose visuals with the accumulation buffer. */
 533          if (value > 0)
 534             return NULL;
 535          break;
 536
 537       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 538          srgb = value != 0;
 539          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 540             return NULL;
 541          break;
 542
 543       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 544          base.MaxPbufferWidth = _EGL_MAX_PBUFFER_WIDTH;
 545          break;
 546       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 547          base.MaxPbufferHeight = _EGL_MAX_PBUFFER_HEIGHT;
 548          break;
 549       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
 550          if (disp->Extensions.KHR_mutable_render_buffer)
 551             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
 552          break;
 553       default:
 554          key = dri2_to_egl_attribute_map[attrib];
 555          if (key != 0)
 556             _eglSetConfigKey(&base, key, value);
 557          break;
 558       }
 559    }
 560
 561    if (attr_list)
 562       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 563          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 564
 565    if (rgba_shifts && memcmp(rgba_shifts, dri_shifts, sizeof(dri_shifts)))
 566       return NULL;
 567
 568    if (rgba_sizes && memcmp(rgba_sizes, dri_sizes, sizeof(dri_sizes)))
 569       return NULL;
 570
 571    base.NativeRenderable = EGL_TRUE;
 572
 573    base.SurfaceType = surface_type;
 574    if (surface_type & (EGL_PBUFFER_BIT |
 575        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 576       base.BindToTextureRGB = bind_to_texture_rgb;
 577       if (base.AlphaSize > 0)
 578          base.BindToTextureRGBA = bind_to_texture_rgba;
 579    }
 580
 581    if (double_buffer) {
 582       surface_type &= ~EGL_PIXMAP_BIT;
 583    }
 584
 585    /* No support for pbuffer + MSAA for now.
 586     *
 587     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 588     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 589     */
 590    if (base.Samples) {
 591       surface_type &= ~EGL_PBUFFER_BIT;
 592    }
 593
 594    if (!surface_type)
 595       return NULL;
 596
 597    base.RenderableType = disp->ClientAPIs;
 598    base.Conformant = disp->ClientAPIs;
 599
 600    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 601    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 602
 603    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 604       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 605       return NULL;
 606    }
 607
 608    config_id = base.ConfigID;
 609    base.ConfigID    = EGL_DONT_CARE;
 610    base.SurfaceType = EGL_DONT_CARE;
 611    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 612                                  (_EGLArrayForEach) dri2_match_config, &base);
 613
 614    if (num_configs == 1) {
 615       conf = (struct dri2_egl_config *) matching_config;
 616
 617       if (!conf->dri_config[double_buffer][srgb])
 618          conf->dri_config[double_buffer][srgb] = dri_config;
 619       else
 620          /* a similar config type is already added (unlikely) => discard */
 621          return NULL;
 622    }
 623    else if (num_configs == 0) {
 624       conf = calloc(1, sizeof *conf);
 625       if (conf == NULL)
 626          return NULL;
 627
 628       conf->dri_config[double_buffer][srgb] = dri_config;
 629
 630       memcpy(&conf->base, &base, sizeof base);
 631       conf->base.SurfaceType = 0;
 632       conf->base.ConfigID = config_id;
 633
 634       _eglLinkConfig(&conf->base);
 635    }
 636    else {
 637       unreachable("duplicates should not be possible");
 638       return NULL;
 639    }
 640
 641    conf->base.SurfaceType |= surface_type;
 642
 643    return conf;
 644 }
 645
 646 EGLBoolean
 647 dri2_add_pbuffer_configs_for_visuals(_EGLDisplay *disp)
 648 {
 649    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 650    unsigned int format_count[ARRAY_SIZE(dri2_pbuffer_visuals)] = { 0 };
 651    unsigned int config_count = 0;
 652
 653    for (unsigned i = 0; dri2_dpy->driver_configs[i] != NULL; i++) {
 654       for (unsigned j = 0; j < ARRAY_SIZE(dri2_pbuffer_visuals); j++) {
 655          struct dri2_egl_config *dri2_conf;
 656
 657          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
 658                config_count + 1, EGL_PBUFFER_BIT, NULL,
 659                dri2_pbuffer_visuals[j].rgba_shifts, dri2_pbuffer_visuals[j].rgba_sizes);
 660
 661          if (dri2_conf) {
 662             if (dri2_conf->base.ConfigID == config_count + 1)
 663                config_count++;
 664             format_count[j]++;
 665          }
 666       }
 667    }
 668
 669    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
 670       if (!format_count[i]) {
 671          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
 672                dri2_pbuffer_visuals[i].format_name);
 673       }
 674    }
 675
 676    return (config_count != 0);
 677 }
 678
 679 __DRIimage *
 680 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 681 {
 682    _EGLDisplay *disp = data;
 683    struct dri2_egl_image *dri2_img;
 684    _EGLImage *img;
 685
 686    (void) screen;
 687
 688    img = _eglLookupImage(image, disp);
 689    if (img == NULL) {
 690       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 691       return NULL;
 692    }
 693
 694    dri2_img = dri2_egl_image(image);
 695
 696    return dri2_img->dri_image;
 697 }
 698
 699 const __DRIimageLookupExtension image_lookup_extension = {
 700    .base = { __DRI_IMAGE_LOOKUP, 1 },
 701
 702    .lookupEGLImage       = dri2_lookup_egl_image
 703 };
 704
 705 struct dri2_extension_match {
 706    const char *name;
 707    int version;
 708    int offset;
 709 };
 710
 711 static const struct dri2_extension_match dri3_driver_extensions[] = {
 712    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 713    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 714    { NULL, 0, 0 }
 715 };
 716
 717 static const struct dri2_extension_match dri2_driver_extensions[] = {
 718    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 719    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 720    { NULL, 0, 0 }
 721 };
 722
 723 static const struct dri2_extension_match dri2_core_extensions[] = {
 724    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 725    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 726    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 727    { NULL, 0, 0 }
 728 };
 729
 730 static const struct dri2_extension_match swrast_driver_extensions[] = {
 731    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 732    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 733    { NULL, 0, 0 }
 734 };
 735
 736 static const struct dri2_extension_match swrast_core_extensions[] = {
 737    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 738    { NULL, 0, 0 }
 739 };
 740
 741 static const struct dri2_extension_match optional_driver_extensions[] = {
 742    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
 743    { NULL, 0, 0 }
 744 };
 745
 746 static const struct dri2_extension_match optional_core_extensions[] = {
 747    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 748    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 749    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 750    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 751    { __DRI2_BUFFER_DAMAGE, 1, offsetof(struct dri2_egl_display, buffer_damage) },
 752    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 753    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 754    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 755    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 756    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 757    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 758    { NULL, 0, 0 }
 759 };
 760
 761 static EGLBoolean
 762 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 763                      const struct dri2_extension_match *matches,
 764                      const __DRIextension **extensions,
 765                      bool optional)
 766 {
 767    int ret = EGL_TRUE;
 768    void *field;
 769
 770    for (int i = 0; extensions[i]; i++) {
 771       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 772       for (int j = 0; matches[j].name; j++) {
 773          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 774              extensions[i]->version >= matches[j].version) {
 775             field = ((char *) dri2_dpy + matches[j].offset);
 776             *(const __DRIextension **) field = extensions[i];
 777             _eglLog(_EGL_INFO, "found extension %s version %d",
 778                     extensions[i]->name, extensions[i]->version);
 779             break;
 780          }
 781       }
 782    }
 783
 784    for (int j = 0; matches[j].name; j++) {
 785       field = ((char *) dri2_dpy + matches[j].offset);
 786       if (*(const __DRIextension **) field == NULL) {
 787          if (optional) {
 788             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 789                     matches[j].name, matches[j].version);
 790          } else {
 791             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 792                     matches[j].name, matches[j].version);
 793             ret = EGL_FALSE;
 794          }
 795       }
 796    }
 797
 798    return ret;
 799 }
 800
 801 static const __DRIextension **
 802 dri2_open_driver(_EGLDisplay *disp)
 803 {
 804    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 805    static const char *search_path_vars[] = {
 806       "LIBGL_DRIVERS_PATH",
 807       NULL,
 808    };
 809
 810    return loader_open_driver(dri2_dpy->driver_name,
 811                              &dri2_dpy->driver,
 812                              search_path_vars);
 813 }
 814
 815 static EGLBoolean
 816 dri2_load_driver_common(_EGLDisplay *disp,
 817                         const struct dri2_extension_match *driver_extensions)
 818 {
 819    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 820    const __DRIextension **extensions;
 821
 822    extensions = dri2_open_driver(disp);
 823    if (!extensions)
 824       return EGL_FALSE;
 825
 826    if (!dri2_bind_extensions(dri2_dpy, driver_extensions, extensions, false)) {
 827       dlclose(dri2_dpy->driver);
 828       dri2_dpy->driver = NULL;
 829       return EGL_FALSE;
 830    }
 831    dri2_dpy->driver_extensions = extensions;
 832
 833    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 834
 835    return EGL_TRUE;
 836 }
 837
 838 EGLBoolean
 839 dri2_load_driver(_EGLDisplay *disp)
 840 {
 841    return dri2_load_driver_common(disp, dri2_driver_extensions);
 842 }
 843
 844 EGLBoolean
 845 dri2_load_driver_dri3(_EGLDisplay *disp)
 846 {
 847    return dri2_load_driver_common(disp, dri3_driver_extensions);
 848 }
 849
 850 EGLBoolean
 851 dri2_load_driver_swrast(_EGLDisplay *disp)
 852 {
 853    return dri2_load_driver_common(disp, swrast_driver_extensions);
 854 }
 855
 856 static unsigned
 857 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 858 {
 859    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 860    unsigned int value = 0;
 861
 862    if (!rendererQuery ||
 863        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 864       return 0;
 865
 866    return value;
 867 }
 868
 869 static const char *
 870 dri2_query_driver_name(_EGLDisplay *disp)
 871 {
 872     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 873     return dri2_dpy->driver_name;
 874 }
 875
 876 static char *
 877 dri2_query_driver_config(_EGLDisplay *disp)
 878 {
 879     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 880     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
 881
 882     if (ext->base.version >= 2)
 883         return ext->getXml(dri2_dpy->driver_name);
 884
 885     return strdup(ext->xml);
 886 }
 887
 888
 889 void
 890 dri2_setup_screen(_EGLDisplay *disp)
 891 {
 892    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 893    unsigned int api_mask;
 894
 895    /*
 896     * EGL 1.5 specification defines the default value to 1. Moreover,
 897     * eglSwapInterval() is required to clamp requested value to the supported
 898     * range. Since the default value is implicitly assumed to be supported,
 899     * use it as both minimum and maximum for the platforms that do not allow
 900     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 901     * override these values already.
 902     */
 903    dri2_dpy->min_swap_interval = 1;
 904    dri2_dpy->max_swap_interval = 1;
 905    dri2_dpy->default_swap_interval = 1;
 906
 907    if (dri2_dpy->image_driver) {
 908       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 909    } else if (dri2_dpy->dri2) {
 910       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 911    } else {
 912       assert(dri2_dpy->swrast);
 913       api_mask = 1 << __DRI_API_OPENGL |
 914                  1 << __DRI_API_GLES |
 915                  1 << __DRI_API_GLES2 |
 916                  1 << __DRI_API_GLES3;
 917    }
 918
 919    disp->ClientAPIs = 0;
 920    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 921       disp->ClientAPIs |= EGL_OPENGL_BIT;
 922    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 923       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 924    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 925       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 926    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 927       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 928
 929    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 930    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 931    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 932
 933    if (dri2_dpy->configOptions) {
 934        disp->Extensions.MESA_query_driver = EGL_TRUE;
 935    }
 936
 937    /* Report back to EGL the bitmask of priorities supported */
 938    disp->Extensions.IMG_context_priority =
 939       dri2_renderer_query_integer(dri2_dpy,
 940                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 941
 942    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 943
 944    if (dri2_renderer_query_integer(dri2_dpy,
 945                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 946       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 947
 948    if (dri2_dpy->image_driver ||
 949        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 950        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 951       disp->Extensions.KHR_create_context = EGL_TRUE;
 952
 953       if (dri2_dpy->robustness)
 954          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 955    }
 956
 957    if (dri2_dpy->no_error)
 958       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 959
 960    if (dri2_dpy->fence) {
 961       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 962       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 963       if (dri2_dpy->fence->get_fence_from_cl_event)
 964          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 965       if (dri2_dpy->fence->base.version >= 2 &&
 966           dri2_dpy->fence->get_capabilities) {
 967          unsigned capabilities =
 968             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 969          disp->Extensions.ANDROID_native_fence_sync =
 970             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 971       }
 972    }
 973
 974    if (dri2_dpy->blob)
 975       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 976
 977    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 978
 979    if (dri2_dpy->image) {
 980       if (dri2_dpy->image->base.version >= 10 &&
 981           dri2_dpy->image->getCapabilities != NULL) {
 982          int capabilities;
 983
 984          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 985          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 986
 987          if (dri2_dpy->image->base.version >= 11)
 988             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 989       } else {
 990          disp->Extensions.MESA_drm_image = EGL_TRUE;
 991          if (dri2_dpy->image->base.version >= 11)
 992             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 993       }
 994
 995       disp->Extensions.KHR_image_base = EGL_TRUE;
 996       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 997       if (dri2_dpy->image->base.version >= 5 &&
 998           dri2_dpy->image->createImageFromTexture) {
 999          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
1000          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
1001
1002          if (dri2_renderer_query_integer(dri2_dpy,
1003                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
1004              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
1005       }
1006 #ifdef HAVE_LIBDRM
1007       if (dri2_dpy->image->base.version >= 8 &&
1008           dri2_dpy->image->createImageFromDmaBufs) {
1009          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
1010          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
1011       }
1012 #endif
1013    }
1014
1015    if (dri2_dpy->flush_control)
1016       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
1017
1018    if (dri2_dpy->buffer_damage && dri2_dpy->buffer_damage->set_damage_region)
1019       disp->Extensions.KHR_partial_update = EGL_TRUE;
1020 }
1021
1022 void
1023 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
1024 {
1025    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1026    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1027
1028    /* Allow driconf to override applications.*/
1029    if (dri2_dpy->config)
1030       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1031                                      "vblank_mode", &vblank_mode);
1032    switch (vblank_mode) {
1033    case DRI_CONF_VBLANK_NEVER:
1034       dri2_dpy->min_swap_interval = 0;
1035       dri2_dpy->max_swap_interval = 0;
1036       dri2_dpy->default_swap_interval = 0;
1037       break;
1038    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1039       dri2_dpy->min_swap_interval = 1;
1040       dri2_dpy->max_swap_interval = max_swap_interval;
1041       dri2_dpy->default_swap_interval = 1;
1042       break;
1043    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1044       dri2_dpy->min_swap_interval = 0;
1045       dri2_dpy->max_swap_interval = max_swap_interval;
1046       dri2_dpy->default_swap_interval = 0;
1047       break;
1048    default:
1049    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1050       dri2_dpy->min_swap_interval = 0;
1051       dri2_dpy->max_swap_interval = max_swap_interval;
1052       dri2_dpy->default_swap_interval = 1;
1053       break;
1054    }
1055 }
1056
1057 /* All platforms but DRM call this function to create the screen and populate
1058  * the driver_configs. DRM inherits that information from its display - GBM.
1059  */
1060 EGLBoolean
1061 dri2_create_screen(_EGLDisplay *disp)
1062 {
1063    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1064
1065    if (dri2_dpy->image_driver) {
1066       dri2_dpy->dri_screen =
1067          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
1068                                                   dri2_dpy->loader_extensions,
1069                                                   dri2_dpy->driver_extensions,
1070                                                   &dri2_dpy->driver_configs,
1071                                                   disp);
1072    } else if (dri2_dpy->dri2) {
1073       if (dri2_dpy->dri2->base.version >= 4) {
1074          dri2_dpy->dri_screen =
1075             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
1076                                              dri2_dpy->loader_extensions,
1077                                              dri2_dpy->driver_extensions,
1078                                              &dri2_dpy->driver_configs, disp);
1079       } else {
1080          dri2_dpy->dri_screen =
1081             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
1082                                             dri2_dpy->loader_extensions,
1083                                             &dri2_dpy->driver_configs, disp);
1084       }
1085    } else {
1086       assert(dri2_dpy->swrast);
1087       if (dri2_dpy->swrast->base.version >= 4) {
1088          dri2_dpy->dri_screen =
1089             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
1090                                                dri2_dpy->driver_extensions,
1091                                                &dri2_dpy->driver_configs, disp);
1092       } else {
1093          dri2_dpy->dri_screen =
1094             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
1095                                               &dri2_dpy->driver_configs, disp);
1096       }
1097    }
1098
1099    if (dri2_dpy->dri_screen == NULL) {
1100       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
1101       return EGL_FALSE;
1102    }
1103
1104    dri2_dpy->own_dri_screen = true;
1105    return EGL_TRUE;
1106 }
1107
1108 EGLBoolean
1109 dri2_setup_extensions(_EGLDisplay *disp)
1110 {
1111    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1112    const struct dri2_extension_match *mandatory_core_extensions;
1113    const __DRIextension **extensions;
1114
1115    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
1116
1117    if (dri2_dpy->image_driver || dri2_dpy->dri2)
1118       mandatory_core_extensions = dri2_core_extensions;
1119    else
1120       mandatory_core_extensions = swrast_core_extensions;
1121
1122    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
1123       return EGL_FALSE;
1124
1125 #ifdef HAVE_DRI3_MODIFIERS
1126    dri2_dpy->multibuffers_available =
1127       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
1128                                             dri2_dpy->dri3_minor_version >= 2)) &&
1129       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
1130                                                dri2_dpy->present_minor_version >= 2)) &&
1131       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
1132 #endif
1133
1134    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
1135    return EGL_TRUE;
1136 }
1137
1138 /**
1139  * Called via eglInitialize(), drv->Initialize().
1140  *
1141  * This must be guaranteed to be called exactly once, even if eglInitialize is
1142  * called many times (without a eglTerminate in between).
1143  */
1144 static EGLBoolean
1145 dri2_initialize(_EGLDisplay *disp)
1146 {
1147    EGLBoolean ret = EGL_FALSE;
1148    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1149
1150    /* In the case where the application calls eglMakeCurrent(context1),
1151     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
1152     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
1153     * initialized, as we need it to be able to free context1 correctly.
1154     *
1155     * It would probably be safest to forcibly release the display with
1156     * dri2_display_release, to make sure the display is reinitialized correctly.
1157     * However, the EGL spec states that we need to keep a reference to the
1158     * current context (so we cannot call dri2_make_current(NULL)), and therefore
1159     * we would leak context1 as we would be missing the old display connection
1160     * to free it up correctly.
1161     */
1162    if (dri2_dpy) {
1163       dri2_dpy->ref_count++;
1164       return EGL_TRUE;
1165    }
1166
1167    loader_set_logger(_eglLog);
1168
1169    switch (disp->Platform) {
1170    case _EGL_PLATFORM_SURFACELESS:
1171       ret = dri2_initialize_surfaceless(disp);
1172       break;
1173    case _EGL_PLATFORM_DEVICE:
1174       ret = dri2_initialize_device(disp);
1175       break;
1176    case _EGL_PLATFORM_X11:
1177       ret = dri2_initialize_x11(disp);
1178       break;
1179    case _EGL_PLATFORM_DRM:
1180       ret = dri2_initialize_drm(disp);
1181       break;
1182    case _EGL_PLATFORM_WAYLAND:
1183       ret = dri2_initialize_wayland(disp);
1184       break;
1185    case _EGL_PLATFORM_ANDROID:
1186       ret = dri2_initialize_android(disp);
1187       break;
1188    default:
1189       unreachable("Callers ensure we cannot get here.");
1190       return EGL_FALSE;
1191    }
1192
1193    if (!ret)
1194       return EGL_FALSE;
1195
1196    dri2_dpy = dri2_egl_display(disp);
1197    dri2_dpy->ref_count++;
1198
1199    return EGL_TRUE;
1200 }
1201
1202 /**
1203  * Decrement display reference count, and free up display if necessary.
1204  */
1205 static void
1206 dri2_display_release(_EGLDisplay *disp)
1207 {
1208    struct dri2_egl_display *dri2_dpy;
1209
1210    if (!disp)
1211       return;
1212
1213    dri2_dpy = dri2_egl_display(disp);
1214
1215    assert(dri2_dpy->ref_count > 0);
1216    dri2_dpy->ref_count--;
1217
1218    if (dri2_dpy->ref_count > 0)
1219       return;
1220
1221    _eglCleanupDisplay(disp);
1222    dri2_display_destroy(disp);
1223 }
1224
1225 void
1226 dri2_display_destroy(_EGLDisplay *disp)
1227 {
1228    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1229
1230    if (dri2_dpy->own_dri_screen) {
1231       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
1232          dri2_dpy->vtbl->close_screen_notify(disp);
1233       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1234    }
1235    if (dri2_dpy->fd >= 0)
1236       close(dri2_dpy->fd);
1237    if (dri2_dpy->driver)
1238       dlclose(dri2_dpy->driver);
1239    free(dri2_dpy->driver_name);
1240
1241 #ifdef HAVE_WAYLAND_PLATFORM
1242    free(dri2_dpy->device_name);
1243 #endif
1244
1245    switch (disp->Platform) {
1246    case _EGL_PLATFORM_X11:
1247       dri2_teardown_x11(dri2_dpy);
1248       break;
1249    case _EGL_PLATFORM_DRM:
1250       dri2_teardown_drm(dri2_dpy);
1251       break;
1252    case _EGL_PLATFORM_WAYLAND:
1253       dri2_teardown_wayland(dri2_dpy);
1254       break;
1255    default:
1256       /* TODO: add teardown for other platforms */
1257       break;
1258    }
1259
1260    /* The drm platform does not create the screen/driver_configs but reuses
1261     * the ones from the gbm device. As such the gbm itself is responsible
1262     * for the cleanup.
1263     */
1264    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1265       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1266          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1267       free(dri2_dpy->driver_configs);
1268    }
1269    free(dri2_dpy);
1270    disp->DriverData = NULL;
1271 }
1272
1273 __DRIbuffer *
1274 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1275                                     unsigned int att, unsigned int format)
1276 {
1277    struct dri2_egl_display *dri2_dpy =
1278       dri2_egl_display(dri2_surf->base.Resource.Display);
1279
1280    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1281       return NULL;
1282
1283    if (!dri2_surf->local_buffers[att]) {
1284       dri2_surf->local_buffers[att] =
1285          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1286                                         dri2_surf->base.Width, dri2_surf->base.Height);
1287    }
1288
1289    return dri2_surf->local_buffers[att];
1290 }
1291
1292 void
1293 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1294 {
1295    struct dri2_egl_display *dri2_dpy =
1296       dri2_egl_display(dri2_surf->base.Resource.Display);
1297
1298    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1299       if (dri2_surf->local_buffers[i]) {
1300          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1301                                        dri2_surf->local_buffers[i]);
1302          dri2_surf->local_buffers[i] = NULL;
1303       }
1304    }
1305 }
1306
1307 /**
1308  * Called via eglTerminate(), drv->Terminate().
1309  *
1310  * This must be guaranteed to be called exactly once, even if eglTerminate is
1311  * called many times (without a eglInitialize in between).
1312  */
1313 static EGLBoolean
1314 dri2_terminate(_EGLDisplay *disp)
1315 {
1316    /* Release all non-current Context/Surfaces. */
1317    _eglReleaseDisplayResources(disp);
1318
1319    dri2_display_release(disp);
1320
1321    return EGL_TRUE;
1322 }
1323
1324 /**
1325  * Set the error code after a call to
1326  * dri2_egl_display::dri2::createContextAttribs.
1327  */
1328 static void
1329 dri2_create_context_attribs_error(int dri_error)
1330 {
1331    EGLint egl_error;
1332
1333    switch (dri_error) {
1334    case __DRI_CTX_ERROR_SUCCESS:
1335       return;
1336
1337    case __DRI_CTX_ERROR_NO_MEMORY:
1338       egl_error = EGL_BAD_ALLOC;
1339       break;
1340
1341   /* From the EGL_KHR_create_context spec, section "Errors":
1342    *
1343    *   * If <config> does not support a client API context compatible
1344    *     with the requested API major and minor version, [...] context flags,
1345    *     and context reset notification behavior (for client API types where
1346    *     these attributes are supported), then an EGL_BAD_MATCH error is
1347    *     generated.
1348    *
1349    *   * If an OpenGL ES context is requested and the values for
1350    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1351    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1352    *     is not defined, than an EGL_BAD_MATCH error is generated.
1353    *
1354    *   * If an OpenGL context is requested, the requested version is
1355    *     greater than 3.2, and the value for attribute
1356    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1357    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1358    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1359    *     one of these bits set; or if the implementation does not support
1360    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1361    */
1362    case __DRI_CTX_ERROR_BAD_API:
1363    case __DRI_CTX_ERROR_BAD_VERSION:
1364    case __DRI_CTX_ERROR_BAD_FLAG:
1365       egl_error = EGL_BAD_MATCH;
1366       break;
1367
1368   /* From the EGL_KHR_create_context spec, section "Errors":
1369    *
1370    *   * If an attribute name or attribute value in <attrib_list> is not
1371    *     recognized (including unrecognized bits in bitmask attributes),
1372    *     then an EGL_BAD_ATTRIBUTE error is generated."
1373    */
1374    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1375    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1376       egl_error = EGL_BAD_ATTRIBUTE;
1377       break;
1378
1379    default:
1380       assert(!"unknown dri_error code");
1381       egl_error = EGL_BAD_MATCH;
1382       break;
1383    }
1384
1385    _eglError(egl_error, "dri2_create_context");
1386 }
1387
1388 static bool
1389 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1390                           struct dri2_egl_display *dri2_dpy,
1391                           uint32_t *ctx_attribs,
1392                           unsigned *num_attribs)
1393 {
1394    int pos = 0;
1395
1396    assert(*num_attribs >= NUM_ATTRIBS);
1397
1398    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1399    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1400    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1401    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1402
1403    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1404       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1405        * extension, don't even try to send it the robust-access flag.
1406        * It may explode.  Instead, generate the required EGL error here.
1407        */
1408       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1409             && !dri2_dpy->robustness) {
1410          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1411          return false;
1412       }
1413
1414       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1415       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1416          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1417    }
1418
1419    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1420       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1421        * extension, don't even try to send it a reset strategy.  It may
1422        * explode.  Instead, generate the required EGL error here.
1423        */
1424       if (!dri2_dpy->robustness) {
1425          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1426          return false;
1427       }
1428
1429       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1430       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1431    }
1432
1433    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1434       unsigned val;
1435
1436       switch (dri2_ctx->base.ContextPriority) {
1437       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1438          val = __DRI_CTX_PRIORITY_HIGH;
1439          break;
1440       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1441          val = __DRI_CTX_PRIORITY_MEDIUM;
1442          break;
1443       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1444          val = __DRI_CTX_PRIORITY_LOW;
1445          break;
1446       default:
1447          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1448          return false;
1449       }
1450
1451       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1452       ctx_attribs[pos++] = val;
1453    }
1454
1455    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1456       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1457       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1458    }
1459
1460    *num_attribs = pos;
1461
1462    return true;
1463 }
1464
1465 /**
1466  * Called via eglCreateContext(), drv->CreateContext().
1467  */
1468 static _EGLContext *
1469 dri2_create_context(_EGLDisplay *disp, _EGLConfig *conf,
1470                     _EGLContext *share_list, const EGLint *attrib_list)
1471 {
1472    struct dri2_egl_context *dri2_ctx;
1473    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1474    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1475    __DRIcontext *shared =
1476       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1477    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1478    const __DRIconfig *dri_config;
1479    int api;
1480    unsigned error;
1481    unsigned num_attribs = NUM_ATTRIBS;
1482    uint32_t ctx_attribs[NUM_ATTRIBS];
1483
1484    dri2_ctx = malloc(sizeof *dri2_ctx);
1485    if (!dri2_ctx) {
1486       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1487       return NULL;
1488    }
1489
1490    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1491       goto cleanup;
1492
1493    /* The EGL_EXT_create_context_robustness spec says:
1494     *
1495     *    "Add to the eglCreateContext context creation errors: [...]
1496     *
1497     *     * If the reset notification behavior of <share_context> and the
1498     *       newly created context are different then an EGL_BAD_MATCH error is
1499     *       generated."
1500     */
1501    if (share_list && share_list->ResetNotificationStrategy !=
1502                      dri2_ctx->base.ResetNotificationStrategy) {
1503       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1504       goto cleanup;
1505    }
1506
1507    /* The EGL_KHR_create_context_no_error spec says:
1508     *
1509     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1510     *    used to create <share_context> does not match the value of
1511     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1512     */
1513    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1514       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1515       goto cleanup;
1516    }
1517
1518    switch (dri2_ctx->base.ClientAPI) {
1519    case EGL_OPENGL_ES_API:
1520       switch (dri2_ctx->base.ClientMajorVersion) {
1521       case 1:
1522          api = __DRI_API_GLES;
1523          break;
1524       case 2:
1525          api = __DRI_API_GLES2;
1526          break;
1527       case 3:
1528          api = __DRI_API_GLES3;
1529          break;
1530       default:
1531          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1532          free(dri2_ctx);
1533          return NULL;
1534       }
1535       break;
1536    case EGL_OPENGL_API:
1537       if ((dri2_ctx->base.ClientMajorVersion >= 4
1538            || (dri2_ctx->base.ClientMajorVersion == 3
1539                && dri2_ctx->base.ClientMinorVersion >= 2))
1540           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1541          api = __DRI_API_OPENGL_CORE;
1542       else if (dri2_ctx->base.ClientMajorVersion == 3 &&
1543                dri2_ctx->base.ClientMinorVersion == 1)
1544          api = __DRI_API_OPENGL_CORE;
1545       else
1546          api = __DRI_API_OPENGL;
1547       break;
1548    default:
1549       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1550       free(dri2_ctx);
1551       return NULL;
1552    }
1553
1554    if (conf != NULL) {
1555       /* The config chosen here isn't necessarily
1556        * used for surfaces later.
1557        * A pixmap surface will use the single config.
1558        * This opportunity depends on disabling the
1559        * doubleBufferMode check in
1560        * src/mesa/main/context.c:check_compatible()
1561        */
1562       if (dri2_config->dri_config[1][0])
1563          dri_config = dri2_config->dri_config[1][0];
1564       else
1565          dri_config = dri2_config->dri_config[0][0];
1566    }
1567    else
1568       dri_config = NULL;
1569
1570    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1571                                   &num_attribs))
1572       goto cleanup;
1573
1574    if (dri2_dpy->image_driver) {
1575       dri2_ctx->dri_context =
1576          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1577                                                       api,
1578                                                       dri_config,
1579                                                       shared,
1580                                                       num_attribs / 2,
1581                                                       ctx_attribs,
1582                                                       & error,
1583                                                       dri2_ctx);
1584       dri2_create_context_attribs_error(error);
1585    } else if (dri2_dpy->dri2) {
1586       if (dri2_dpy->dri2->base.version >= 3) {
1587          dri2_ctx->dri_context =
1588             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1589                                                  api,
1590                                                  dri_config,
1591                                                  shared,
1592                                                  num_attribs / 2,
1593                                                  ctx_attribs,
1594                                                  & error,
1595                                                  dri2_ctx);
1596          dri2_create_context_attribs_error(error);
1597       } else {
1598          dri2_ctx->dri_context =
1599             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1600                                                    api,
1601                                                    dri_config,
1602                                                    shared,
1603                                                    dri2_ctx);
1604       }
1605    } else {
1606       assert(dri2_dpy->swrast);
1607       if (dri2_dpy->swrast->base.version >= 3) {
1608          dri2_ctx->dri_context =
1609             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1610                                                    api,
1611                                                    dri_config,
1612                                                    shared,
1613                                                    num_attribs / 2,
1614                                                    ctx_attribs,
1615                                                    & error,
1616                                                    dri2_ctx);
1617          dri2_create_context_attribs_error(error);
1618       } else {
1619          dri2_ctx->dri_context =
1620             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1621                                                      api,
1622                                                      dri_config,
1623                                                      shared,
1624                                                      dri2_ctx);
1625       }
1626    }
1627
1628    if (!dri2_ctx->dri_context)
1629       goto cleanup;
1630
1631    return &dri2_ctx->base;
1632
1633  cleanup:
1634    free(dri2_ctx);
1635    return NULL;
1636 }
1637
1638 /**
1639  * Called via eglDestroyContext(), drv->DestroyContext().
1640  */
1641 static EGLBoolean
1642 dri2_destroy_context(_EGLDisplay *disp, _EGLContext *ctx)
1643 {
1644    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1645    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1646
1647    if (_eglPutContext(ctx)) {
1648       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1649       free(dri2_ctx);
1650    }
1651
1652    return EGL_TRUE;
1653 }
1654
1655 EGLBoolean
1656 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1657         _EGLConfig *conf, const EGLint *attrib_list,
1658         EGLBoolean enable_out_fence, void *native_surface)
1659 {
1660    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1661    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1662
1663    dri2_surf->out_fence_fd = -1;
1664    dri2_surf->enable_out_fence = false;
1665    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1666        dri2_dpy->fence->get_capabilities &&
1667        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1668         __DRI_FENCE_CAP_NATIVE_FD)) {
1669       dri2_surf->enable_out_fence = enable_out_fence;
1670    }
1671
1672    return _eglInitSurface(surf, disp, type, conf, attrib_list, native_surface);
1673 }
1674
1675 static void
1676 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1677 {
1678    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1679
1680    if (dri2_surf->out_fence_fd >= 0)
1681       close(dri2_surf->out_fence_fd);
1682
1683    dri2_surf->out_fence_fd = fence_fd;
1684 }
1685
1686 void
1687 dri2_fini_surface(_EGLSurface *surf)
1688 {
1689    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1690
1691    dri2_surface_set_out_fence_fd(surf, -1);
1692    dri2_surf->enable_out_fence = false;
1693 }
1694
1695 static EGLBoolean
1696 dri2_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
1697 {
1698    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1699
1700    if (!_eglPutSurface(surf))
1701       return EGL_TRUE;
1702
1703    return dri2_dpy->vtbl->destroy_surface(disp, surf);
1704 }
1705
1706 static void
1707 dri2_surf_update_fence_fd(_EGLContext *ctx,
1708                           _EGLDisplay *disp, _EGLSurface *surf)
1709 {
1710    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1711    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1712    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1713    int fence_fd = -1;
1714    void *fence;
1715
1716    if (!dri2_surf->enable_out_fence)
1717       return;
1718
1719    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1720    if (fence) {
1721       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1722                                                fence);
1723       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1724    }
1725    dri2_surface_set_out_fence_fd(surf, fence_fd);
1726 }
1727
1728 EGLBoolean
1729 dri2_create_drawable(struct dri2_egl_display *dri2_dpy,
1730                      const __DRIconfig *config,
1731                      struct dri2_egl_surface *dri2_surf,
1732                      void *loaderPrivate)
1733 {
1734    __DRIcreateNewDrawableFunc createNewDrawable;
1735
1736    if (dri2_dpy->image_driver)
1737       createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
1738    else if (dri2_dpy->dri2)
1739       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
1740    else if (dri2_dpy->swrast)
1741       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
1742    else
1743       return _eglError(EGL_BAD_ALLOC, "no createNewDrawable");
1744
1745    dri2_surf->dri_drawable = createNewDrawable(dri2_dpy->dri_screen,
1746                                                config, loaderPrivate);
1747    if (dri2_surf->dri_drawable == NULL)
1748       return _eglError(EGL_BAD_ALLOC, "createNewDrawable");
1749
1750    return EGL_TRUE;
1751 }
1752
1753 /**
1754  * Called via eglMakeCurrent(), drv->MakeCurrent().
1755  */
1756 static EGLBoolean
1757 dri2_make_current(_EGLDisplay *disp, _EGLSurface *dsurf,
1758                   _EGLSurface *rsurf, _EGLContext *ctx)
1759 {
1760    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1761    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1762    _EGLDisplay *old_disp = NULL;
1763    struct dri2_egl_display *old_dri2_dpy = NULL;
1764    _EGLContext *old_ctx;
1765    _EGLSurface *old_dsurf, *old_rsurf;
1766    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1767    __DRIdrawable *ddraw, *rdraw;
1768    __DRIcontext *cctx;
1769    EGLint egl_error = EGL_SUCCESS;
1770
1771    if (!dri2_dpy)
1772       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1773
1774    /* make new bindings, set the EGL error otherwise */
1775    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
1776       return EGL_FALSE;
1777
1778    if (old_ctx) {
1779       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1780       old_disp = old_ctx->Resource.Display;
1781       old_dri2_dpy = dri2_egl_display(old_disp);
1782
1783       /* flush before context switch */
1784       dri2_gl_flush();
1785
1786       if (old_dsurf)
1787          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1788
1789       /* Disable shared buffer mode */
1790       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1791           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1792          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1793       }
1794
1795       dri2_dpy->core->unbindContext(old_cctx);
1796    }
1797
1798    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1799    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1800    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1801
1802    if (cctx || ddraw || rdraw) {
1803       if (!dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1804          _EGLContext *tmp_ctx;
1805
1806          /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1807           * setting the error to EGL_BAD_MATCH is surely better than leaving it
1808           * as EGL_SUCCESS.
1809           */
1810          egl_error = EGL_BAD_MATCH;
1811
1812          /* undo the previous _eglBindContext */
1813          _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1814          assert(&dri2_ctx->base == ctx &&
1815                 tmp_dsurf == dsurf &&
1816                 tmp_rsurf == rsurf);
1817
1818          _eglPutSurface(dsurf);
1819          _eglPutSurface(rsurf);
1820          _eglPutContext(ctx);
1821
1822          _eglPutSurface(old_dsurf);
1823          _eglPutSurface(old_rsurf);
1824          _eglPutContext(old_ctx);
1825
1826          ddraw = (old_dsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_dsurf) : NULL;
1827          rdraw = (old_rsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_rsurf) : NULL;
1828          cctx = (old_ctx) ? dri2_egl_context(old_ctx)->dri_context : NULL;
1829
1830          /* undo the previous dri2_dpy->core->unbindContext */
1831          if (dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1832             if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1833                 old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1834                old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1835             }
1836
1837             return _eglError(egl_error, "eglMakeCurrent");
1838          }
1839
1840          /* We cannot restore the same state as it was before calling
1841           * eglMakeCurrent() and the spec isn't clear about what to do. We
1842           * can prevent EGL from calling into the DRI driver with no DRI
1843           * context bound.
1844           */
1845          dsurf = rsurf = NULL;
1846          ctx = NULL;
1847
1848          _eglBindContext(ctx, dsurf, rsurf, &tmp_ctx, &tmp_dsurf, &tmp_rsurf);
1849          assert(tmp_ctx == old_ctx && tmp_dsurf == old_dsurf &&
1850                 tmp_rsurf == old_rsurf);
1851
1852          _eglLog(_EGL_WARNING, "DRI2: failed to rebind the previous context");
1853       } else {
1854          /* dri2_dpy->core->bindContext succeeded, so take a reference on the
1855           * dri2_dpy. This prevents dri2_dpy from being reinitialized when a
1856           * EGLDisplay is terminated and then initialized again while a
1857           * context is still bound. See dri2_intitialize() for a more in depth
1858           * explanation. */
1859          dri2_dpy->ref_count++;
1860       }
1861    }
1862
1863    dri2_destroy_surface(disp, old_dsurf);
1864    dri2_destroy_surface(disp, old_rsurf);
1865
1866    if (old_ctx) {
1867       dri2_destroy_context(disp, old_ctx);
1868       dri2_display_release(old_disp);
1869    }
1870
1871    if (egl_error != EGL_SUCCESS)
1872       return _eglError(egl_error, "eglMakeCurrent");
1873
1874    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1875        dri2_dpy->vtbl->set_shared_buffer_mode) {
1876       /* Always update the shared buffer mode. This is obviously needed when
1877        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1878        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1879        * case where external non-EGL API may have changed window's shared
1880        * buffer mode since we last saw it.
1881        */
1882       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1883       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1884    }
1885
1886    return EGL_TRUE;
1887 }
1888
1889 __DRIdrawable *
1890 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1891 {
1892    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1893
1894    return dri2_surf->dri_drawable;
1895 }
1896
1897 /*
1898  * Called from eglGetProcAddress() via drv->GetProcAddress().
1899  */
1900 static _EGLProc
1901 dri2_get_proc_address(const char *procname)
1902 {
1903    return _glapi_get_proc_address(procname);
1904 }
1905
1906 static _EGLSurface*
1907 dri2_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
1908                            void *native_window, const EGLint *attrib_list)
1909 {
1910    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1911    return dri2_dpy->vtbl->create_window_surface(disp, conf, native_window,
1912                                                 attrib_list);
1913 }
1914
1915 static _EGLSurface*
1916 dri2_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
1917                            void *native_pixmap, const EGLint *attrib_list)
1918 {
1919    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1920    if (!dri2_dpy->vtbl->create_pixmap_surface)
1921       return NULL;
1922    return dri2_dpy->vtbl->create_pixmap_surface(disp, conf, native_pixmap,
1923                                                 attrib_list);
1924 }
1925
1926 static _EGLSurface*
1927 dri2_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
1928                             const EGLint *attrib_list)
1929 {
1930    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1931    if (!dri2_dpy->vtbl->create_pbuffer_surface)
1932       return NULL;
1933    return dri2_dpy->vtbl->create_pbuffer_surface(disp, conf, attrib_list);
1934 }
1935
1936 static EGLBoolean
1937 dri2_swap_interval(_EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
1938 {
1939    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1940    if (!dri2_dpy->vtbl->swap_interval)
1941       return EGL_TRUE;
1942    return dri2_dpy->vtbl->swap_interval(disp, surf, interval);
1943 }
1944
1945 /**
1946  * Asks the client API to flush any rendering to the drawable so that we can
1947  * do our swapbuffers.
1948  */
1949 void
1950 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1951 {
1952    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1953    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1954
1955    if (dri2_dpy->flush) {
1956       if (dri2_dpy->flush->base.version >= 4) {
1957          /* We know there's a current context because:
1958           *
1959           *     "If surface is not bound to the calling thread’s current
1960           *      context, an EGL_BAD_SURFACE error is generated."
1961          */
1962          _EGLContext *ctx = _eglGetCurrentContext();
1963          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1964
1965          /* From the EGL 1.4 spec (page 52):
1966           *
1967           *     "The contents of ancillary buffers are always undefined
1968           *      after calling eglSwapBuffers."
1969           */
1970          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1971                                            dri_drawable,
1972                                            __DRI2_FLUSH_DRAWABLE |
1973                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1974                                            __DRI2_THROTTLE_SWAPBUFFER);
1975       } else {
1976          dri2_dpy->flush->flush(dri_drawable);
1977       }
1978    }
1979 }
1980
1981 static EGLBoolean
1982 dri2_swap_buffers(_EGLDisplay *disp, _EGLSurface *surf)
1983 {
1984    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1985    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1986    _EGLContext *ctx = _eglGetCurrentContext();
1987    EGLBoolean ret;
1988
1989    if (ctx && surf)
1990       dri2_surf_update_fence_fd(ctx, disp, surf);
1991    ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
1992
1993    /* SwapBuffers marks the end of the frame; reset the damage region for
1994     * use again next time.
1995     */
1996    if (ret && dri2_dpy->buffer_damage &&
1997        dri2_dpy->buffer_damage->set_damage_region)
1998       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
1999
2000    return ret;
2001 }
2002
2003 static EGLBoolean
2004 dri2_swap_buffers_with_damage(_EGLDisplay *disp, _EGLSurface *surf,
2005                               const EGLint *rects, EGLint n_rects)
2006 {
2007    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2008    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2009    _EGLContext *ctx = _eglGetCurrentContext();
2010    EGLBoolean ret;
2011
2012    if (ctx && surf)
2013       dri2_surf_update_fence_fd(ctx, disp, surf);
2014    if (dri2_dpy->vtbl->swap_buffers_with_damage)
2015       ret = dri2_dpy->vtbl->swap_buffers_with_damage(disp, surf,
2016                                                      rects, n_rects);
2017    else
2018       ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2019
2020    /* SwapBuffers marks the end of the frame; reset the damage region for
2021     * use again next time.
2022     */
2023    if (ret && dri2_dpy->buffer_damage &&
2024        dri2_dpy->buffer_damage->set_damage_region)
2025       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2026
2027    return ret;
2028 }
2029
2030 static EGLBoolean
2031 dri2_swap_buffers_region(_EGLDisplay *disp, _EGLSurface *surf,
2032                          EGLint numRects, const EGLint *rects)
2033 {
2034    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2035    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2036    EGLBoolean ret;
2037
2038    if (!dri2_dpy->vtbl->swap_buffers_region)
2039       return EGL_FALSE;
2040    ret = dri2_dpy->vtbl->swap_buffers_region(disp, surf, numRects, rects);
2041
2042    /* SwapBuffers marks the end of the frame; reset the damage region for
2043     * use again next time.
2044     */
2045    if (ret && dri2_dpy->buffer_damage &&
2046        dri2_dpy->buffer_damage->set_damage_region)
2047       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2048
2049    return ret;
2050 }
2051
2052 static EGLBoolean
2053 dri2_set_damage_region(_EGLDisplay *disp, _EGLSurface *surf,
2054                        EGLint *rects, EGLint n_rects)
2055 {
2056    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2057    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2058
2059    if (!dri2_dpy->buffer_damage || !dri2_dpy->buffer_damage->set_damage_region)
2060       return EGL_FALSE;
2061
2062    dri2_dpy->buffer_damage->set_damage_region(drawable, n_rects, rects);
2063    return EGL_TRUE;
2064 }
2065
2066 static EGLBoolean
2067 dri2_post_sub_buffer(_EGLDisplay *disp, _EGLSurface *surf,
2068                      EGLint x, EGLint y, EGLint width, EGLint height)
2069 {
2070    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2071    if (!dri2_dpy->vtbl->post_sub_buffer)
2072       return EGL_FALSE;
2073    return dri2_dpy->vtbl->post_sub_buffer(disp, surf, x, y, width, height);
2074 }
2075
2076 static EGLBoolean
2077 dri2_copy_buffers(_EGLDisplay *disp, _EGLSurface *surf, void *native_pixmap_target)
2078 {
2079    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2080    if (!dri2_dpy->vtbl->copy_buffers)
2081       return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
2082    return dri2_dpy->vtbl->copy_buffers(disp, surf, native_pixmap_target);
2083 }
2084
2085 static EGLint
2086 dri2_query_buffer_age(_EGLDisplay *disp, _EGLSurface *surf)
2087 {
2088    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2089    if (!dri2_dpy->vtbl->query_buffer_age)
2090       return 0;
2091    return dri2_dpy->vtbl->query_buffer_age(disp, surf);
2092 }
2093
2094 static EGLBoolean
2095 dri2_wait_client(_EGLDisplay *disp, _EGLContext *ctx)
2096 {
2097    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2098    _EGLSurface *surf = ctx->DrawSurface;
2099    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2100
2101    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
2102     * we need to copy fake to real here.*/
2103
2104    if (dri2_dpy->flush != NULL)
2105       dri2_dpy->flush->flush(dri_drawable);
2106
2107    return EGL_TRUE;
2108 }
2109
2110 static EGLBoolean
2111 dri2_wait_native(EGLint engine)
2112 {
2113    if (engine != EGL_CORE_NATIVE_ENGINE)
2114       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
2115    /* glXWaitX(); */
2116
2117    return EGL_TRUE;
2118 }
2119
2120 static EGLBoolean
2121 dri2_bind_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2122 {
2123    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2124    struct dri2_egl_context *dri2_ctx;
2125    _EGLContext *ctx;
2126    GLint format, target;
2127    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2128
2129    ctx = _eglGetCurrentContext();
2130    dri2_ctx = dri2_egl_context(ctx);
2131
2132    if (!_eglBindTexImage(disp, surf, buffer))
2133       return EGL_FALSE;
2134
2135    switch (surf->TextureFormat) {
2136    case EGL_TEXTURE_RGB:
2137       format = __DRI_TEXTURE_FORMAT_RGB;
2138       break;
2139    case EGL_TEXTURE_RGBA:
2140       format = __DRI_TEXTURE_FORMAT_RGBA;
2141       break;
2142    default:
2143       assert(!"Unexpected texture format in dri2_bind_tex_image()");
2144       format = __DRI_TEXTURE_FORMAT_RGBA;
2145    }
2146
2147    switch (surf->TextureTarget) {
2148    case EGL_TEXTURE_2D:
2149       target = GL_TEXTURE_2D;
2150       break;
2151    default:
2152       target = GL_TEXTURE_2D;
2153       assert(!"Unexpected texture target in dri2_bind_tex_image()");
2154    }
2155
2156    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
2157                                        target, format,
2158                                        dri_drawable);
2159
2160    return EGL_TRUE;
2161 }
2162
2163 static EGLBoolean
2164 dri2_release_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2165 {
2166    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2167    struct dri2_egl_context *dri2_ctx;
2168    _EGLContext *ctx;
2169    GLint  target;
2170    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2171
2172    ctx = _eglGetCurrentContext();
2173    dri2_ctx = dri2_egl_context(ctx);
2174
2175    if (!_eglReleaseTexImage(disp, surf, buffer))
2176       return EGL_FALSE;
2177
2178    switch (surf->TextureTarget) {
2179    case EGL_TEXTURE_2D:
2180       target = GL_TEXTURE_2D;
2181       break;
2182    default:
2183       assert(!"missing texture target");
2184    }
2185
2186    if (dri2_dpy->tex_buffer->base.version >= 3 &&
2187        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
2188       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
2189                                              target, dri_drawable);
2190    }
2191
2192    return EGL_TRUE;
2193 }
2194
2195 static _EGLImage*
2196 dri2_create_image(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
2197                   EGLClientBuffer buffer, const EGLint *attr_list)
2198 {
2199    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2200    return dri2_dpy->vtbl->create_image(disp, ctx, target, buffer,
2201                                        attr_list);
2202 }
2203
2204 static _EGLImage *
2205 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
2206 {
2207    struct dri2_egl_image *dri2_img;
2208
2209    if (dri_image == NULL) {
2210       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2211       return NULL;
2212    }
2213
2214    dri2_img = malloc(sizeof *dri2_img);
2215    if (!dri2_img) {
2216       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2217       return NULL;
2218    }
2219
2220    _eglInitImage(&dri2_img->base, disp);
2221
2222    dri2_img->dri_image = dri_image;
2223
2224    return &dri2_img->base;
2225 }
2226
2227 /**
2228  * Translate a DRI Image extension error code into an EGL error code.
2229  */
2230 static EGLint
2231 egl_error_from_dri_image_error(int dri_error)
2232 {
2233    switch (dri_error) {
2234    case __DRI_IMAGE_ERROR_SUCCESS:
2235       return EGL_SUCCESS;
2236    case __DRI_IMAGE_ERROR_BAD_ALLOC:
2237       return EGL_BAD_ALLOC;
2238    case __DRI_IMAGE_ERROR_BAD_MATCH:
2239       return EGL_BAD_MATCH;
2240    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
2241       return EGL_BAD_PARAMETER;
2242    case __DRI_IMAGE_ERROR_BAD_ACCESS:
2243       return EGL_BAD_ACCESS;
2244    default:
2245       assert(!"unknown dri_error code");
2246       return EGL_BAD_ALLOC;
2247    }
2248 }
2249
2250 static _EGLImage *
2251 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
2252                                    EGLClientBuffer buffer,
2253                                    const EGLint *attr_list)
2254 {
2255    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2256    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2257    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
2258    __DRIimage *dri_image;
2259
2260    if (renderbuffer == 0) {
2261       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2262       return EGL_NO_IMAGE_KHR;
2263    }
2264
2265    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
2266       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2267       return EGL_NO_IMAGE_KHR;
2268    }
2269
2270    if (dri2_dpy->image->base.version >= 17 &&
2271        dri2_dpy->image->createImageFromRenderbuffer2) {
2272       unsigned error = ~0;
2273
2274       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
2275                dri2_ctx->dri_context, renderbuffer, NULL, &error);
2276
2277       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
2278
2279       if (!dri_image) {
2280          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
2281          return EGL_NO_IMAGE_KHR;
2282       }
2283    } else {
2284       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
2285                dri2_ctx->dri_context, renderbuffer, NULL);
2286       if (!dri_image) {
2287          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2288          return EGL_NO_IMAGE_KHR;
2289       }
2290    }
2291
2292    return dri2_create_image_from_dri(disp, dri_image);
2293 }
2294
2295 #ifdef HAVE_WAYLAND_PLATFORM
2296
2297 /* This structure describes how a wl_buffer maps to one or more
2298  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
2299  * offsets and strides of the planes in the buffer.  This table maps a
2300  * wl_drm format code to a description of the planes in the buffer
2301  * that lets us create a __DRIimage for each of the planes. */
2302
2303 static const struct wl_drm_components_descriptor {
2304    uint32_t dri_components;
2305    EGLint components;
2306    int nplanes;
2307 } wl_drm_components[] = {
2308    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
2309    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
2310    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
2311    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
2312    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
2313 };
2314
2315 static _EGLImage *
2316 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2317                                     EGLClientBuffer _buffer,
2318                                     const EGLint *attr_list)
2319 {
2320    struct wl_drm_buffer *buffer;
2321    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2322    const struct wl_drm_components_descriptor *f;
2323    __DRIimage *dri_image;
2324    _EGLImageAttribs attrs;
2325    int32_t plane;
2326
2327    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
2328                                    (struct wl_resource *) _buffer);
2329    if (!buffer)
2330        return NULL;
2331
2332    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2333       return NULL;
2334
2335    plane = attrs.PlaneWL;
2336    f = buffer->driver_format;
2337    if (plane < 0 || plane >= f->nplanes) {
2338       _eglError(EGL_BAD_PARAMETER,
2339                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2340       return NULL;
2341    }
2342
2343    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2344    if (dri_image == NULL && plane == 0)
2345       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
2346    if (dri_image == NULL) {
2347       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2348       return NULL;
2349    }
2350
2351    return dri2_create_image_from_dri(disp, dri_image);
2352 }
2353 #endif
2354
2355 static EGLBoolean
2356 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
2357                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2358                               EGLuint64KHR *sbc)
2359 {
2360    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2361    if (!dri2_dpy->vtbl->get_sync_values)
2362       return EGL_FALSE;
2363    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
2364 }
2365
2366 /**
2367  * Set the error code after a call to
2368  * dri2_egl_image::dri_image::createImageFromTexture.
2369  */
2370 static void
2371 dri2_create_image_khr_texture_error(int dri_error)
2372 {
2373    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2374
2375    if (egl_error != EGL_SUCCESS)
2376       _eglError(egl_error, "dri2_create_image_khr_texture");
2377 }
2378
2379 static _EGLImage *
2380 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2381                                    EGLenum target,
2382                                    EGLClientBuffer buffer,
2383                                    const EGLint *attr_list)
2384 {
2385    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2386    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2387    struct dri2_egl_image *dri2_img;
2388    GLuint texture = (GLuint) (uintptr_t) buffer;
2389    _EGLImageAttribs attrs;
2390    GLuint depth;
2391    GLenum gl_target;
2392    unsigned error;
2393
2394    if (texture == 0) {
2395       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2396       return EGL_NO_IMAGE_KHR;
2397    }
2398
2399    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2400       return EGL_NO_IMAGE_KHR;
2401
2402    switch (target) {
2403    case EGL_GL_TEXTURE_2D_KHR:
2404       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2405          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2406          return EGL_NO_IMAGE_KHR;
2407       }
2408       depth = 0;
2409       gl_target = GL_TEXTURE_2D;
2410       break;
2411    case EGL_GL_TEXTURE_3D_KHR:
2412       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2413          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2414          return EGL_NO_IMAGE_KHR;
2415       }
2416
2417       depth = attrs.GLTextureZOffset;
2418       gl_target = GL_TEXTURE_3D;
2419       break;
2420    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2421    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2422    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2423    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2424    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2425    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2426       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2427          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2428          return EGL_NO_IMAGE_KHR;
2429       }
2430
2431       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2432       gl_target = GL_TEXTURE_CUBE_MAP;
2433       break;
2434    default:
2435       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2436       return EGL_NO_IMAGE_KHR;
2437    }
2438
2439    dri2_img = malloc(sizeof *dri2_img);
2440    if (!dri2_img) {
2441       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2442       return EGL_NO_IMAGE_KHR;
2443    }
2444
2445    _eglInitImage(&dri2_img->base, disp);
2446
2447    dri2_img->dri_image =
2448       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2449                                               gl_target,
2450                                               texture,
2451                                               depth,
2452                                               attrs.GLTextureLevel,
2453                                               &error,
2454                                               dri2_img);
2455    dri2_create_image_khr_texture_error(error);
2456
2457    if (!dri2_img->dri_image) {
2458       free(dri2_img);
2459       return EGL_NO_IMAGE_KHR;
2460    }
2461    return &dri2_img->base;
2462 }
2463
2464 static EGLBoolean
2465 dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
2466                    EGLint attribute, EGLint *value)
2467 {
2468    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2469    if (!dri2_dpy->vtbl->query_surface)
2470       return _eglQuerySurface(disp, surf, attribute, value);
2471    return dri2_dpy->vtbl->query_surface(disp, surf, attribute, value);
2472 }
2473
2474 static struct wl_buffer*
2475 dri2_create_wayland_buffer_from_image(_EGLDisplay *disp, _EGLImage *img)
2476 {
2477    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2478    if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
2479       return NULL;
2480    return dri2_dpy->vtbl->create_wayland_buffer_from_image(disp, img);
2481 }
2482
2483 #ifdef HAVE_LIBDRM
2484 static _EGLImage *
2485 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2486                                   EGLClientBuffer buffer, const EGLint *attr_list)
2487 {
2488    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2489    EGLint format, name, pitch;
2490    _EGLImageAttribs attrs;
2491    __DRIimage *dri_image;
2492
2493    name = (EGLint) (uintptr_t) buffer;
2494
2495    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2496       return NULL;
2497
2498    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2499        attrs.DRMBufferStrideMESA <= 0) {
2500       _eglError(EGL_BAD_PARAMETER,
2501                 "bad width, height or stride");
2502       return NULL;
2503    }
2504
2505    switch (attrs.DRMBufferFormatMESA) {
2506    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2507       format = __DRI_IMAGE_FORMAT_ARGB8888;
2508       pitch = attrs.DRMBufferStrideMESA;
2509       break;
2510    default:
2511       _eglError(EGL_BAD_PARAMETER,
2512                 "dri2_create_image_khr: unsupported pixmap depth");
2513       return NULL;
2514    }
2515
2516    dri_image =
2517       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2518                                            attrs.Width,
2519                                            attrs.Height,
2520                                            format,
2521                                            name,
2522                                            pitch,
2523                                            NULL);
2524
2525    return dri2_create_image_from_dri(disp, dri_image);
2526 }
2527
2528 static EGLBoolean
2529 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2530 {
2531    /**
2532      * The spec says:
2533      *
2534      * "Required attributes and their values are as follows:
2535      *
2536      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2537      *
2538      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2539      *    by drm_fourcc.h and used as the pixel_format parameter of the
2540      *    drm_mode_fb_cmd2 ioctl."
2541      *
2542      * and
2543      *
2544      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2545      *    incomplete, EGL_BAD_PARAMETER is generated."
2546      */
2547    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2548        !attrs->DMABufFourCC.IsPresent)
2549       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2550
2551    /**
2552     * Also:
2553     *
2554     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2555     *  specified for a plane's pitch or offset isn't supported by EGL,
2556     *  EGL_BAD_ACCESS is generated."
2557     */
2558    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2559       if (attrs->DMABufPlanePitches[i].IsPresent &&
2560           attrs->DMABufPlanePitches[i].Value <= 0)
2561          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2562    }
2563
2564    /**
2565     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2566     * attribute values may be given.
2567     *
2568     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2569     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2570     */
2571    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2572       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2573           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2574          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2575    }
2576
2577    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2578     * mandate it, we only accept the same modifier across all planes. */
2579    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2580       if (attrs->DMABufPlaneFds[i].IsPresent) {
2581          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2582                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2583              (attrs->DMABufPlaneModifiersLo[0].Value !=
2584                attrs->DMABufPlaneModifiersLo[i].Value) ||
2585              (attrs->DMABufPlaneModifiersHi[0].Value !=
2586                attrs->DMABufPlaneModifiersHi[i].Value))
2587             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2588       }
2589    }
2590
2591    return EGL_TRUE;
2592 }
2593
2594 /* Returns the total number of planes for the format or zero if it isn't a
2595  * valid fourcc format.
2596  */
2597 static unsigned
2598 dri2_num_fourcc_format_planes(EGLint format)
2599 {
2600    switch (format) {
2601    case DRM_FORMAT_R8:
2602    case DRM_FORMAT_RG88:
2603    case DRM_FORMAT_GR88:
2604    case DRM_FORMAT_R16:
2605    case DRM_FORMAT_GR1616:
2606    case DRM_FORMAT_RGB332:
2607    case DRM_FORMAT_BGR233:
2608    case DRM_FORMAT_XRGB4444:
2609    case DRM_FORMAT_XBGR4444:
2610    case DRM_FORMAT_RGBX4444:
2611    case DRM_FORMAT_BGRX4444:
2612    case DRM_FORMAT_ARGB4444:
2613    case DRM_FORMAT_ABGR4444:
2614    case DRM_FORMAT_RGBA4444:
2615    case DRM_FORMAT_BGRA4444:
2616    case DRM_FORMAT_XRGB1555:
2617    case DRM_FORMAT_XBGR1555:
2618    case DRM_FORMAT_RGBX5551:
2619    case DRM_FORMAT_BGRX5551:
2620    case DRM_FORMAT_ARGB1555:
2621    case DRM_FORMAT_ABGR1555:
2622    case DRM_FORMAT_RGBA5551:
2623    case DRM_FORMAT_BGRA5551:
2624    case DRM_FORMAT_RGB565:
2625    case DRM_FORMAT_BGR565:
2626    case DRM_FORMAT_RGB888:
2627    case DRM_FORMAT_BGR888:
2628    case DRM_FORMAT_XRGB8888:
2629    case DRM_FORMAT_XBGR8888:
2630    case DRM_FORMAT_RGBX8888:
2631    case DRM_FORMAT_BGRX8888:
2632    case DRM_FORMAT_ARGB8888:
2633    case DRM_FORMAT_ABGR8888:
2634    case DRM_FORMAT_RGBA8888:
2635    case DRM_FORMAT_BGRA8888:
2636    case DRM_FORMAT_XRGB2101010:
2637    case DRM_FORMAT_XBGR2101010:
2638    case DRM_FORMAT_RGBX1010102:
2639    case DRM_FORMAT_BGRX1010102:
2640    case DRM_FORMAT_ARGB2101010:
2641    case DRM_FORMAT_ABGR2101010:
2642    case DRM_FORMAT_RGBA1010102:
2643    case DRM_FORMAT_BGRA1010102:
2644    case DRM_FORMAT_XBGR16161616F:
2645    case DRM_FORMAT_ABGR16161616F:
2646    case DRM_FORMAT_YUYV:
2647    case DRM_FORMAT_YVYU:
2648    case DRM_FORMAT_UYVY:
2649    case DRM_FORMAT_VYUY:
2650    case DRM_FORMAT_AYUV:
2651    case DRM_FORMAT_XYUV8888:
2652       return 1;
2653
2654    case DRM_FORMAT_NV12:
2655    case DRM_FORMAT_NV21:
2656    case DRM_FORMAT_NV16:
2657    case DRM_FORMAT_NV61:
2658    case DRM_FORMAT_P010:
2659    case DRM_FORMAT_P012:
2660    case DRM_FORMAT_P016:
2661       return 2;
2662
2663    case DRM_FORMAT_YUV410:
2664    case DRM_FORMAT_YVU410:
2665    case DRM_FORMAT_YUV411:
2666    case DRM_FORMAT_YVU411:
2667    case DRM_FORMAT_YUV420:
2668    case DRM_FORMAT_YVU420:
2669    case DRM_FORMAT_YUV422:
2670    case DRM_FORMAT_YVU422:
2671    case DRM_FORMAT_YUV444:
2672    case DRM_FORMAT_YVU444:
2673       return 3;
2674
2675    default:
2676       return 0;
2677    }
2678 }
2679
2680 /* Returns the total number of file descriptors. Zero indicates an error. */
2681 static unsigned
2682 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2683 {
2684    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2685    if (plane_n == 0) {
2686       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2687       return 0;
2688    }
2689
2690    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2691       /**
2692        * The modifiers extension spec says:
2693        *
2694        * "Modifiers may modify any attribute of a buffer import, including
2695        *  but not limited to adding extra planes to a format which
2696        *  otherwise does not have those planes. As an example, a modifier
2697        *  may add a plane for an external compression buffer to a
2698        *  single-plane format. The exact meaning and effect of any
2699        *  modifier is canonically defined by drm_fourcc.h, not as part of
2700        *  this extension."
2701        */
2702       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2703           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2704          plane_n = i + 1;
2705       }
2706    }
2707
2708    /**
2709      * The spec says:
2710      *
2711      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2712      *    incomplete, EGL_BAD_PARAMETER is generated."
2713      */
2714    for (unsigned i = 0; i < plane_n; ++i) {
2715       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2716           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2717           !attrs->DMABufPlanePitches[i].IsPresent) {
2718          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2719          return 0;
2720       }
2721    }
2722
2723    /**
2724     * The spec also says:
2725     *
2726     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2727     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2728     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2729     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2730     */
2731    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2732       if (attrs->DMABufPlaneFds[i].IsPresent ||
2733           attrs->DMABufPlaneOffsets[i].IsPresent ||
2734           attrs->DMABufPlanePitches[i].IsPresent) {
2735          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2736          return 0;
2737       }
2738    }
2739
2740    return plane_n;
2741 }
2742
2743 static EGLBoolean
2744 dri2_query_dma_buf_formats(_EGLDisplay *disp, EGLint max,
2745                            EGLint *formats, EGLint *count)
2746 {
2747    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2748    if (max < 0 || (max > 0 && formats == NULL))
2749       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2750
2751    if (dri2_dpy->image->base.version < 15 ||
2752        dri2_dpy->image->queryDmaBufFormats == NULL)
2753       return EGL_FALSE;
2754
2755    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2756                                             formats, count))
2757       return EGL_FALSE;
2758
2759    if (max > 0) {
2760       /* Assert that all of the formats returned are actually fourcc formats.
2761        * Some day, if we want the internal interface function to be able to
2762        * return the fake fourcc formats defined in dri_interface.h, we'll have
2763        * to do something more clever here to pair the list down to just real
2764        * fourcc formats so that we don't leak the fake internal ones.
2765        */
2766       for (int i = 0; i < *count; i++) {
2767          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2768       }
2769    }
2770
2771    return EGL_TRUE;
2772 }
2773
2774 static EGLBoolean
2775 dri2_query_dma_buf_modifiers(_EGLDisplay *disp, EGLint format,
2776                              EGLint max, EGLuint64KHR *modifiers,
2777                              EGLBoolean *external_only, EGLint *count)
2778 {
2779    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2780
2781    if (dri2_num_fourcc_format_planes(format) == 0)
2782       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2783
2784    if (max < 0)
2785       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2786
2787    if (max > 0 && modifiers == NULL)
2788       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2789
2790    if (dri2_dpy->image->base.version < 15 ||
2791        dri2_dpy->image->queryDmaBufModifiers == NULL)
2792       return EGL_FALSE;
2793
2794    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2795                                              max, modifiers,
2796                                              (unsigned int *) external_only,
2797                                              count) == false)
2798       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2799
2800    return EGL_TRUE;
2801 }
2802
2803 /**
2804  * The spec says:
2805  *
2806  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2807  *  EGL will take a reference to the dma_buf(s) which it will release at any
2808  *  time while the EGLDisplay is initialized. It is the responsibility of the
2809  *  application to close the dma_buf file descriptors."
2810  *
2811  * Therefore we must never close or otherwise modify the file descriptors.
2812  */
2813 _EGLImage *
2814 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2815                           EGLClientBuffer buffer, const EGLint *attr_list)
2816 {
2817    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2818    _EGLImage *res;
2819    _EGLImageAttribs attrs;
2820    __DRIimage *dri_image;
2821    unsigned num_fds;
2822    int fds[DMA_BUF_MAX_PLANES];
2823    int pitches[DMA_BUF_MAX_PLANES];
2824    int offsets[DMA_BUF_MAX_PLANES];
2825    uint64_t modifier;
2826    bool has_modifier = false;
2827    unsigned error;
2828
2829    /**
2830     * The spec says:
2831     *
2832     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2833     *     error EGL_BAD_PARAMETER is generated."
2834     */
2835    if (buffer != NULL) {
2836       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2837       return NULL;
2838    }
2839
2840    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2841       return NULL;
2842
2843    if (!dri2_check_dma_buf_attribs(&attrs))
2844       return NULL;
2845
2846    num_fds = dri2_check_dma_buf_format(&attrs);
2847    if (!num_fds)
2848       return NULL;
2849
2850    for (unsigned i = 0; i < num_fds; ++i) {
2851       fds[i] = attrs.DMABufPlaneFds[i].Value;
2852       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2853       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2854    }
2855
2856    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2857     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2858     * attrs.DMABufPlaneModifiersHi[0] */
2859    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2860       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2861                                       attrs.DMABufPlaneModifiersLo[0].Value);
2862       has_modifier = true;
2863    }
2864
2865    if (has_modifier) {
2866       if (dri2_dpy->image->base.version < 15 ||
2867           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2868          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2869          return EGL_NO_IMAGE_KHR;
2870       }
2871       dri_image =
2872          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2873             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2874             modifier, fds, num_fds, pitches, offsets,
2875             attrs.DMABufYuvColorSpaceHint.Value,
2876             attrs.DMABufSampleRangeHint.Value,
2877             attrs.DMABufChromaHorizontalSiting.Value,
2878             attrs.DMABufChromaVerticalSiting.Value,
2879             &error,
2880             NULL);
2881    }
2882    else {
2883       dri_image =
2884          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2885             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2886             fds, num_fds, pitches, offsets,
2887             attrs.DMABufYuvColorSpaceHint.Value,
2888             attrs.DMABufSampleRangeHint.Value,
2889             attrs.DMABufChromaHorizontalSiting.Value,
2890             attrs.DMABufChromaVerticalSiting.Value,
2891             &error,
2892             NULL);
2893    }
2894    dri2_create_image_khr_texture_error(error);
2895
2896    if (!dri_image)
2897       return EGL_NO_IMAGE_KHR;
2898
2899    res = dri2_create_image_from_dri(disp, dri_image);
2900
2901    return res;
2902 }
2903 static _EGLImage *
2904 dri2_create_drm_image_mesa(_EGLDisplay *disp, const EGLint *attr_list)
2905 {
2906    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2907    struct dri2_egl_image *dri2_img;
2908    _EGLImageAttribs attrs;
2909    unsigned int dri_use, valid_mask;
2910    int format;
2911
2912    if (!attr_list) {
2913       _eglError(EGL_BAD_PARAMETER, __func__);
2914       return EGL_NO_IMAGE_KHR;
2915    }
2916
2917    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2918       return EGL_NO_IMAGE_KHR;
2919
2920    if (attrs.Width <= 0 || attrs.Height <= 0) {
2921       _eglError(EGL_BAD_PARAMETER, __func__);
2922       return EGL_NO_IMAGE_KHR;
2923    }
2924
2925    switch (attrs.DRMBufferFormatMESA) {
2926    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2927       format = __DRI_IMAGE_FORMAT_ARGB8888;
2928       break;
2929    default:
2930       _eglError(EGL_BAD_PARAMETER, __func__);
2931       return EGL_NO_IMAGE_KHR;
2932    }
2933
2934    valid_mask =
2935       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2936       EGL_DRM_BUFFER_USE_SHARE_MESA |
2937       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2938    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2939       _eglError(EGL_BAD_PARAMETER, __func__);
2940       return EGL_NO_IMAGE_KHR;
2941    }
2942
2943    dri_use = 0;
2944    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2945       dri_use |= __DRI_IMAGE_USE_SHARE;
2946    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2947       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2948    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2949       dri_use |= __DRI_IMAGE_USE_CURSOR;
2950
2951    dri2_img = malloc(sizeof *dri2_img);
2952    if (!dri2_img) {
2953       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2954       return EGL_NO_IMAGE_KHR;
2955    }
2956
2957    _eglInitImage(&dri2_img->base, disp);
2958
2959    dri2_img->dri_image =
2960       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2961                                    attrs.Width, attrs.Height,
2962                                    format, dri_use, dri2_img);
2963    if (dri2_img->dri_image == NULL) {
2964       free(dri2_img);
2965        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2966       return EGL_NO_IMAGE_KHR;
2967    }
2968
2969    return &dri2_img->base;
2970 }
2971
2972 static EGLBoolean
2973 dri2_export_drm_image_mesa(_EGLDisplay *disp, _EGLImage *img,
2974                           EGLint *name, EGLint *handle, EGLint *stride)
2975 {
2976    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2977    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2978
2979    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2980                                             __DRI_IMAGE_ATTRIB_NAME, name))
2981       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2982
2983    if (handle)
2984       dri2_dpy->image->queryImage(dri2_img->dri_image,
2985                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2986
2987    if (stride)
2988       dri2_dpy->image->queryImage(dri2_img->dri_image,
2989                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2990
2991    return EGL_TRUE;
2992 }
2993
2994 /**
2995  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
2996
2997  * The spec provides a boolean return for the driver to reject exporting for
2998  * basically any reason, but doesn't specify any particular error cases.  For
2999  * now, we just fail if we don't have a DRM fourcc for the format.
3000  */
3001 static bool
3002 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
3003 {
3004    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3005    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3006    EGLint fourcc;
3007
3008    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
3009                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
3010       return false;
3011    }
3012
3013    return true;
3014 }
3015
3016 static EGLBoolean
3017 dri2_export_dma_buf_image_query_mesa(_EGLDisplay *disp, _EGLImage *img,
3018                                      EGLint *fourcc, EGLint *nplanes,
3019                                      EGLuint64KHR *modifiers)
3020 {
3021    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3022    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3023    int num_planes;
3024
3025    if (!dri2_can_export_dma_buf_image(disp, img))
3026       return EGL_FALSE;
3027
3028    dri2_dpy->image->queryImage(dri2_img->dri_image,
3029                                __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
3030    if (nplanes)
3031      *nplanes = num_planes;
3032
3033    if (fourcc)
3034       dri2_dpy->image->queryImage(dri2_img->dri_image,
3035                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
3036
3037    if (modifiers) {
3038       int mod_hi, mod_lo;
3039       uint64_t modifier = DRM_FORMAT_MOD_INVALID;
3040       bool query;
3041
3042       query = dri2_dpy->image->queryImage(dri2_img->dri_image,
3043                                           __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
3044                                           &mod_hi);
3045       query &= dri2_dpy->image->queryImage(dri2_img->dri_image,
3046                                            __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
3047                                            &mod_lo);
3048       if (query)
3049          modifier = combine_u32_into_u64 (mod_hi, mod_lo);
3050
3051       for (int i = 0; i < num_planes; i++)
3052         modifiers[i] = modifier;
3053    }
3054
3055    return EGL_TRUE;
3056 }
3057
3058 static EGLBoolean
3059 dri2_export_dma_buf_image_mesa(_EGLDisplay *disp, _EGLImage *img,
3060                                int *fds, EGLint *strides, EGLint *offsets)
3061 {
3062    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3063    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3064    EGLint nplanes;
3065
3066    if (!dri2_can_export_dma_buf_image(disp, img))
3067       return EGL_FALSE;
3068
3069    /* EGL_MESA_image_dma_buf_export spec says:
3070     *    "If the number of fds is less than the number of planes, then
3071     *    subsequent fd slots should contain -1."
3072     */
3073    if (fds) {
3074       /* Query nplanes so that we know how big the given array is. */
3075       dri2_dpy->image->queryImage(dri2_img->dri_image,
3076                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
3077       memset(fds, -1, nplanes * sizeof(int));
3078    }
3079
3080    /* rework later to provide multiple fds/strides/offsets */
3081    if (fds)
3082       dri2_dpy->image->queryImage(dri2_img->dri_image,
3083                                   __DRI_IMAGE_ATTRIB_FD, fds);
3084
3085    if (strides)
3086       dri2_dpy->image->queryImage(dri2_img->dri_image,
3087                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
3088
3089    if (offsets) {
3090       int img_offset;
3091       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
3092                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
3093       if (ret)
3094          offsets[0] = img_offset;
3095       else
3096          offsets[0] = 0;
3097    }
3098
3099    return EGL_TRUE;
3100 }
3101
3102 #endif
3103
3104 _EGLImage *
3105 dri2_create_image_khr(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
3106                       EGLClientBuffer buffer, const EGLint *attr_list)
3107 {
3108    switch (target) {
3109    case EGL_GL_TEXTURE_2D_KHR:
3110    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
3111    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
3112    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
3113    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
3114    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
3115    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
3116    case EGL_GL_TEXTURE_3D_KHR:
3117       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
3118    case EGL_GL_RENDERBUFFER_KHR:
3119       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
3120 #ifdef HAVE_LIBDRM
3121    case EGL_DRM_BUFFER_MESA:
3122       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
3123    case EGL_LINUX_DMA_BUF_EXT:
3124       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
3125 #endif
3126 #ifdef HAVE_WAYLAND_PLATFORM
3127    case EGL_WAYLAND_BUFFER_WL:
3128       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
3129 #endif
3130    default:
3131       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
3132       return EGL_NO_IMAGE_KHR;
3133    }
3134 }
3135
3136 static EGLBoolean
3137 dri2_destroy_image_khr(_EGLDisplay *disp, _EGLImage *image)
3138 {
3139    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3140    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
3141
3142    dri2_dpy->image->destroyImage(dri2_img->dri_image);
3143    free(dri2_img);
3144
3145    return EGL_TRUE;
3146 }
3147
3148 #ifdef HAVE_WAYLAND_PLATFORM
3149
3150 static void
3151 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
3152                          struct wl_drm_buffer *buffer)
3153 {
3154    _EGLDisplay *disp = user_data;
3155    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3156    __DRIimage *img;
3157    int dri_components = 0;
3158
3159    if (fd == -1)
3160       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
3161                                                   buffer->width,
3162                                                   buffer->height,
3163                                                   buffer->format,
3164                                                   (int*)&name, 1,
3165                                                   buffer->stride,
3166                                                   buffer->offset,
3167                                                   NULL);
3168    else
3169       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
3170                                                 buffer->width,
3171                                                 buffer->height,
3172                                                 buffer->format,
3173                                                 &fd, 1,
3174                                                 buffer->stride,
3175                                                 buffer->offset,
3176                                                 NULL);
3177
3178    if (img == NULL)
3179       return;
3180
3181    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
3182
3183    buffer->driver_format = NULL;
3184    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
3185       if (wl_drm_components[i].dri_components == dri_components)
3186          buffer->driver_format = &wl_drm_components[i];
3187
3188    if (buffer->driver_format == NULL)
3189       dri2_dpy->image->destroyImage(img);
3190    else
3191       buffer->driver_buffer = img;
3192 }
3193
3194 static void
3195 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
3196 {
3197    _EGLDisplay *disp = user_data;
3198    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3199
3200    dri2_dpy->image->destroyImage(buffer->driver_buffer);
3201 }
3202
3203 static EGLBoolean
3204 dri2_bind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3205 {
3206    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3207    const struct wayland_drm_callbacks wl_drm_callbacks = {
3208       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
3209       .reference_buffer = dri2_wl_reference_buffer,
3210       .release_buffer = dri2_wl_release_buffer,
3211       .is_format_supported = dri2_wl_is_format_supported
3212    };
3213    int flags = 0;
3214    uint64_t cap;
3215
3216    if (dri2_dpy->wl_server_drm)
3217            return EGL_FALSE;
3218
3219    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
3220        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
3221        dri2_dpy->image->base.version >= 7 &&
3222        dri2_dpy->image->createImageFromFds != NULL)
3223       flags |= WAYLAND_DRM_PRIME;
3224
3225    dri2_dpy->wl_server_drm =
3226            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
3227                             &wl_drm_callbacks, disp, flags);
3228
3229    if (!dri2_dpy->wl_server_drm)
3230            return EGL_FALSE;
3231
3232 #ifdef HAVE_DRM_PLATFORM
3233    /* We have to share the wl_drm instance with gbm, so gbm can convert
3234     * wl_buffers to gbm bos. */
3235    if (dri2_dpy->gbm_dri)
3236       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
3237 #endif
3238
3239    return EGL_TRUE;
3240 }
3241
3242 static EGLBoolean
3243 dri2_unbind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3244 {
3245    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3246
3247    if (!dri2_dpy->wl_server_drm)
3248            return EGL_FALSE;
3249
3250    wayland_drm_uninit(dri2_dpy->wl_server_drm);
3251    dri2_dpy->wl_server_drm = NULL;
3252
3253    return EGL_TRUE;
3254 }
3255
3256 static EGLBoolean
3257 dri2_query_wayland_buffer_wl(_EGLDisplay *disp, struct wl_resource *buffer_resource,
3258                              EGLint attribute, EGLint *value)
3259 {
3260    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3261    struct wl_drm_buffer *buffer;
3262    const struct wl_drm_components_descriptor *format;
3263
3264    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
3265    if (!buffer)
3266       return EGL_FALSE;
3267
3268    format = buffer->driver_format;
3269    switch (attribute) {
3270    case EGL_TEXTURE_FORMAT:
3271       *value = format->components;
3272       return EGL_TRUE;
3273    case EGL_WIDTH:
3274       *value = buffer->width;
3275       return EGL_TRUE;
3276    case EGL_HEIGHT:
3277       *value = buffer->height;
3278       return EGL_TRUE;
3279    }
3280
3281    return EGL_FALSE;
3282 }
3283 #endif
3284
3285 static void
3286 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
3287 {
3288    p_atomic_inc(&sync->refcount);
3289 }
3290
3291 static void
3292 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
3293                     struct dri2_egl_sync *dri2_sync)
3294 {
3295    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
3296       switch (dri2_sync->base.Type) {
3297       case EGL_SYNC_REUSABLE_KHR:
3298          cnd_destroy(&dri2_sync->cond);
3299          break;
3300       case EGL_SYNC_NATIVE_FENCE_ANDROID:
3301          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
3302             close(dri2_sync->base.SyncFd);
3303          break;
3304       default:
3305          break;
3306       }
3307
3308       if (dri2_sync->fence)
3309          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
3310
3311       free(dri2_sync);
3312    }
3313 }
3314
3315 static _EGLSync *
3316 dri2_create_sync(_EGLDisplay *disp, EGLenum type, const EGLAttrib *attrib_list)
3317 {
3318    _EGLContext *ctx = _eglGetCurrentContext();
3319    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3320    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3321    struct dri2_egl_sync *dri2_sync;
3322    EGLint ret;
3323    pthread_condattr_t attr;
3324
3325    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
3326    if (!dri2_sync) {
3327       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3328       return NULL;
3329    }
3330
3331    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
3332       free(dri2_sync);
3333       return NULL;
3334    }
3335
3336    switch (type) {
3337    case EGL_SYNC_FENCE_KHR:
3338       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
3339       if (!dri2_sync->fence) {
3340          /* Why did it fail? DRI doesn't return an error code, so we emit
3341           * a generic EGL error that doesn't communicate user error.
3342           */
3343          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3344          free(dri2_sync);
3345          return NULL;
3346       }
3347       break;
3348
3349    case EGL_SYNC_CL_EVENT_KHR:
3350       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
3351                                  dri2_dpy->dri_screen,
3352                                  dri2_sync->base.CLEvent);
3353       /* this can only happen if the cl_event passed in is invalid. */
3354       if (!dri2_sync->fence) {
3355          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3356          free(dri2_sync);
3357          return NULL;
3358       }
3359
3360       /* the initial status must be "signaled" if the cl_event is signaled */
3361       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
3362                                             dri2_sync->fence, 0, 0))
3363          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3364       break;
3365
3366    case EGL_SYNC_REUSABLE_KHR:
3367       /* intialize attr */
3368       ret = pthread_condattr_init(&attr);
3369
3370       if (ret) {
3371          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3372          free(dri2_sync);
3373          return NULL;
3374       }
3375
3376       /* change clock attribute to CLOCK_MONOTONIC */
3377       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
3378
3379       if (ret) {
3380          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3381          free(dri2_sync);
3382          return NULL;
3383       }
3384
3385       ret = pthread_cond_init(&dri2_sync->cond, &attr);
3386
3387       if (ret) {
3388          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3389          free(dri2_sync);
3390          return NULL;
3391       }
3392
3393       /* initial status of reusable sync must be "unsignaled" */
3394       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3395       break;
3396
3397    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3398       if (dri2_dpy->fence->create_fence_fd) {
3399          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3400                                     dri2_ctx->dri_context,
3401                                     dri2_sync->base.SyncFd);
3402       }
3403       if (!dri2_sync->fence) {
3404          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3405          free(dri2_sync);
3406          return NULL;
3407       }
3408       break;
3409    }
3410
3411    p_atomic_set(&dri2_sync->refcount, 1);
3412    return &dri2_sync->base;
3413 }
3414
3415 static EGLBoolean
3416 dri2_destroy_sync(_EGLDisplay *disp, _EGLSync *sync)
3417 {
3418    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3419    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3420    EGLint ret = EGL_TRUE;
3421    EGLint err;
3422
3423    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3424     * then unlock all threads possibly blocked by the reusable sync before
3425     * destroying it.
3426     */
3427    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3428        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3429       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3430       /* unblock all threads currently blocked by sync */
3431       err = cnd_broadcast(&dri2_sync->cond);
3432
3433       if (err) {
3434          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3435          ret = EGL_FALSE;
3436       }
3437    }
3438
3439    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3440
3441    return ret;
3442 }
3443
3444 static EGLint
3445 dri2_dup_native_fence_fd(_EGLDisplay *disp, _EGLSync *sync)
3446 {
3447    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3448    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3449
3450    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3451
3452    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3453       /* try to retrieve the actual native fence fd.. if rendering is
3454        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3455        */
3456       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3457                                                    dri2_sync->fence);
3458    }
3459
3460    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3461       /* if native fence fd still not created, return an error: */
3462       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3463       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3464    }
3465
3466    return os_dupfd_cloexec(sync->SyncFd);
3467 }
3468
3469 static void
3470 dri2_set_blob_cache_funcs(const _EGLDriver *drv, _EGLDisplay *disp,
3471                           EGLSetBlobFuncANDROID set,
3472                           EGLGetBlobFuncANDROID get)
3473 {
3474    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3475    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3476                                    disp->BlobCacheSet,
3477                                    disp->BlobCacheGet);
3478 }
3479
3480 static EGLint
3481 dri2_client_wait_sync(_EGLDisplay *disp, _EGLSync *sync,
3482                       EGLint flags, EGLTime timeout)
3483 {
3484    _EGLContext *ctx = _eglGetCurrentContext();
3485    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3486    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3487    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3488    unsigned wait_flags = 0;
3489
3490    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3491
3492    /* The EGL_KHR_fence_sync spec states:
3493     *
3494     *    "If no context is current for the bound API,
3495     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3496     */
3497    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3498       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3499
3500    /* the sync object should take a reference while waiting */
3501    dri2_egl_ref_sync(dri2_sync);
3502
3503    switch (sync->Type) {
3504    case EGL_SYNC_FENCE_KHR:
3505    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3506    case EGL_SYNC_CL_EVENT_KHR:
3507       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3508                                          dri2_sync->fence, wait_flags,
3509                                          timeout))
3510          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3511       else
3512          ret = EGL_TIMEOUT_EXPIRED_KHR;
3513       break;
3514
3515    case EGL_SYNC_REUSABLE_KHR:
3516       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3517           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3518          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3519          dri2_gl_flush();
3520       }
3521
3522       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3523       if (timeout == EGL_FOREVER_KHR) {
3524          mtx_lock(&dri2_sync->mutex);
3525          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3526          mtx_unlock(&dri2_sync->mutex);
3527       } else {
3528          /* if reusable sync has not been yet signaled */
3529          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3530             /* timespecs for cnd_timedwait */
3531             struct timespec current;
3532             struct timespec expire;
3533
3534             /* We override the clock to monotonic when creating the condition
3535              * variable. */
3536             clock_gettime(CLOCK_MONOTONIC, &current);
3537
3538             /* calculating when to expire */
3539             expire.tv_nsec = timeout % 1000000000L;
3540             expire.tv_sec = timeout / 1000000000L;
3541
3542             expire.tv_nsec += current.tv_nsec;
3543             expire.tv_sec += current.tv_sec;
3544
3545             /* expire.nsec now is a number between 0 and 1999999998 */
3546             if (expire.tv_nsec > 999999999L) {
3547                expire.tv_sec++;
3548                expire.tv_nsec -= 1000000000L;
3549             }
3550
3551             mtx_lock(&dri2_sync->mutex);
3552             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3553             mtx_unlock(&dri2_sync->mutex);
3554
3555             if (ret == thrd_busy) {
3556                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3557                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3558                } else {
3559                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3560                   ret = EGL_FALSE;
3561                }
3562             }
3563          }
3564       }
3565       break;
3566   }
3567   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3568
3569   return ret;
3570 }
3571
3572 static EGLBoolean
3573 dri2_signal_sync(_EGLDisplay *disp, _EGLSync *sync, EGLenum mode)
3574 {
3575    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3576    EGLint ret;
3577
3578    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3579       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3580
3581    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3582       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3583
3584    dri2_sync->base.SyncStatus = mode;
3585
3586    if (mode == EGL_SIGNALED_KHR) {
3587       ret = cnd_broadcast(&dri2_sync->cond);
3588
3589       /* fail to broadcast */
3590       if (ret)
3591          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3592    }
3593
3594    return EGL_TRUE;
3595 }
3596
3597 static EGLint
3598 dri2_server_wait_sync(_EGLDisplay *disp, _EGLSync *sync)
3599 {
3600    _EGLContext *ctx = _eglGetCurrentContext();
3601    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3602    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3603    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3604
3605    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3606                                      dri2_sync->fence, 0);
3607    return EGL_TRUE;
3608 }
3609
3610 static int
3611 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3612                                struct mesa_glinterop_device_info *out)
3613 {
3614    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3615    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3616
3617    if (!dri2_dpy->interop)
3618       return MESA_GLINTEROP_UNSUPPORTED;
3619
3620    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3621 }
3622
3623 static int
3624 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3625                            struct mesa_glinterop_export_in *in,
3626                            struct mesa_glinterop_export_out *out)
3627 {
3628    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3629    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3630
3631    if (!dri2_dpy->interop)
3632       return MESA_GLINTEROP_UNSUPPORTED;
3633
3634    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3635 }
3636
3637 const _EGLDriver _eglDriver = {
3638    .Initialize = dri2_initialize,
3639    .Terminate = dri2_terminate,
3640    .CreateContext = dri2_create_context,
3641    .DestroyContext = dri2_destroy_context,
3642    .MakeCurrent = dri2_make_current,
3643    .CreateWindowSurface = dri2_create_window_surface,
3644    .CreatePixmapSurface = dri2_create_pixmap_surface,
3645    .CreatePbufferSurface = dri2_create_pbuffer_surface,
3646    .DestroySurface = dri2_destroy_surface,
3647    .GetProcAddress = dri2_get_proc_address,
3648    .WaitClient = dri2_wait_client,
3649    .WaitNative = dri2_wait_native,
3650    .BindTexImage = dri2_bind_tex_image,
3651    .ReleaseTexImage = dri2_release_tex_image,
3652    .SwapInterval = dri2_swap_interval,
3653    .SwapBuffers = dri2_swap_buffers,
3654    .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
3655    .SwapBuffersRegionNOK = dri2_swap_buffers_region,
3656    .SetDamageRegion = dri2_set_damage_region,
3657    .PostSubBufferNV = dri2_post_sub_buffer,
3658    .CopyBuffers = dri2_copy_buffers,
3659    .QueryBufferAge = dri2_query_buffer_age,
3660    .CreateImageKHR = dri2_create_image,
3661    .DestroyImageKHR = dri2_destroy_image_khr,
3662    .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
3663    .QuerySurface = dri2_query_surface,
3664    .QueryDriverName = dri2_query_driver_name,
3665    .QueryDriverConfig = dri2_query_driver_config,
3666 #ifdef HAVE_LIBDRM
3667    .CreateDRMImageMESA = dri2_create_drm_image_mesa,
3668    .ExportDRMImageMESA = dri2_export_drm_image_mesa,
3669    .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
3670    .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
3671    .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
3672    .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
3673 #endif
3674 #ifdef HAVE_WAYLAND_PLATFORM
3675    .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
3676    .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
3677    .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
3678 #endif
3679    .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
3680    .CreateSyncKHR = dri2_create_sync,
3681    .ClientWaitSyncKHR = dri2_client_wait_sync,
3682    .SignalSyncKHR = dri2_signal_sync,
3683    .WaitSyncKHR = dri2_server_wait_sync,
3684    .DestroySyncKHR = dri2_destroy_sync,
3685    .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
3686    .GLInteropExportObject = dri2_interop_export_object,
3687    .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
3688    .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
3689 };