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(const _EGLDriver *drv, _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(drv, 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(const _EGLDriver *drv, _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(drv, disp, old_dsurf);
1864    dri2_destroy_surface(drv, 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 _EGLDriver *drv, const char *procname)
1902 {
1903    return _glapi_get_proc_address(procname);
1904 }
1905
1906 static _EGLSurface*
1907 dri2_create_window_surface(const _EGLDriver *drv, _EGLDisplay *disp,
1908                            _EGLConfig *conf, void *native_window,
1909                            const EGLint *attrib_list)
1910 {
1911    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1912    return dri2_dpy->vtbl->create_window_surface(drv, disp, conf, native_window,
1913                                                 attrib_list);
1914 }
1915
1916 static _EGLSurface*
1917 dri2_create_pixmap_surface(const _EGLDriver *drv, _EGLDisplay *disp,
1918                            _EGLConfig *conf, void *native_pixmap,
1919                            const EGLint *attrib_list)
1920 {
1921    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1922    if (!dri2_dpy->vtbl->create_pixmap_surface)
1923       return NULL;
1924    return dri2_dpy->vtbl->create_pixmap_surface(drv, disp, conf, native_pixmap,
1925                                                 attrib_list);
1926 }
1927
1928 static _EGLSurface*
1929 dri2_create_pbuffer_surface(const _EGLDriver *drv, _EGLDisplay *disp,
1930                            _EGLConfig *conf, const EGLint *attrib_list)
1931 {
1932    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1933    if (!dri2_dpy->vtbl->create_pbuffer_surface)
1934       return NULL;
1935    return dri2_dpy->vtbl->create_pbuffer_surface(drv, disp, conf, attrib_list);
1936 }
1937
1938 static EGLBoolean
1939 dri2_swap_interval(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
1940                    EGLint interval)
1941 {
1942    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1943    if (!dri2_dpy->vtbl->swap_interval)
1944       return EGL_TRUE;
1945    return dri2_dpy->vtbl->swap_interval(drv, disp, surf, interval);
1946 }
1947
1948 /**
1949  * Asks the client API to flush any rendering to the drawable so that we can
1950  * do our swapbuffers.
1951  */
1952 void
1953 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1954 {
1955    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1956    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1957
1958    if (dri2_dpy->flush) {
1959       if (dri2_dpy->flush->base.version >= 4) {
1960          /* We know there's a current context because:
1961           *
1962           *     "If surface is not bound to the calling thread’s current
1963           *      context, an EGL_BAD_SURFACE error is generated."
1964          */
1965          _EGLContext *ctx = _eglGetCurrentContext();
1966          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1967
1968          /* From the EGL 1.4 spec (page 52):
1969           *
1970           *     "The contents of ancillary buffers are always undefined
1971           *      after calling eglSwapBuffers."
1972           */
1973          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1974                                            dri_drawable,
1975                                            __DRI2_FLUSH_DRAWABLE |
1976                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1977                                            __DRI2_THROTTLE_SWAPBUFFER);
1978       } else {
1979          dri2_dpy->flush->flush(dri_drawable);
1980       }
1981    }
1982 }
1983
1984 static EGLBoolean
1985 dri2_swap_buffers(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
1986 {
1987    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1988    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1989    _EGLContext *ctx = _eglGetCurrentContext();
1990    EGLBoolean ret;
1991
1992    if (ctx && surf)
1993       dri2_surf_update_fence_fd(ctx, disp, surf);
1994    ret = dri2_dpy->vtbl->swap_buffers(drv, disp, surf);
1995
1996    /* SwapBuffers marks the end of the frame; reset the damage region for
1997     * use again next time.
1998     */
1999    if (ret && dri2_dpy->buffer_damage &&
2000        dri2_dpy->buffer_damage->set_damage_region)
2001       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2002
2003    return ret;
2004 }
2005
2006 static EGLBoolean
2007 dri2_swap_buffers_with_damage(const _EGLDriver *drv, _EGLDisplay *disp,
2008                               _EGLSurface *surf,
2009                               const EGLint *rects, EGLint n_rects)
2010 {
2011    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2012    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2013    _EGLContext *ctx = _eglGetCurrentContext();
2014    EGLBoolean ret;
2015
2016    if (ctx && surf)
2017       dri2_surf_update_fence_fd(ctx, disp, surf);
2018    if (dri2_dpy->vtbl->swap_buffers_with_damage)
2019       ret = dri2_dpy->vtbl->swap_buffers_with_damage(drv, disp, surf,
2020                                                      rects, n_rects);
2021    else
2022       ret = dri2_dpy->vtbl->swap_buffers(drv, disp, surf);
2023
2024    /* SwapBuffers marks the end of the frame; reset the damage region for
2025     * use again next time.
2026     */
2027    if (ret && dri2_dpy->buffer_damage &&
2028        dri2_dpy->buffer_damage->set_damage_region)
2029       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2030
2031    return ret;
2032 }
2033
2034 static EGLBoolean
2035 dri2_swap_buffers_region(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2036                          EGLint numRects, const EGLint *rects)
2037 {
2038    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2039    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2040    EGLBoolean ret;
2041
2042    if (!dri2_dpy->vtbl->swap_buffers_region)
2043       return EGL_FALSE;
2044    ret = dri2_dpy->vtbl->swap_buffers_region(drv, disp, surf, numRects, rects);
2045
2046    /* SwapBuffers marks the end of the frame; reset the damage region for
2047     * use again next time.
2048     */
2049    if (ret && dri2_dpy->buffer_damage &&
2050        dri2_dpy->buffer_damage->set_damage_region)
2051       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2052
2053    return ret;
2054 }
2055
2056 static EGLBoolean
2057 dri2_set_damage_region(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2058                        EGLint *rects, EGLint n_rects)
2059 {
2060    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2061    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2062
2063    if (!dri2_dpy->buffer_damage || !dri2_dpy->buffer_damage->set_damage_region)
2064       return EGL_FALSE;
2065
2066    dri2_dpy->buffer_damage->set_damage_region(drawable, n_rects, rects);
2067    return EGL_TRUE;
2068 }
2069
2070 static EGLBoolean
2071 dri2_post_sub_buffer(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2072                      EGLint x, EGLint y, EGLint width, EGLint height)
2073 {
2074    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2075    if (!dri2_dpy->vtbl->post_sub_buffer)
2076       return EGL_FALSE;
2077    return dri2_dpy->vtbl->post_sub_buffer(drv, disp, surf, x, y, width, height);
2078 }
2079
2080 static EGLBoolean
2081 dri2_copy_buffers(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2082                   void *native_pixmap_target)
2083 {
2084    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2085    if (!dri2_dpy->vtbl->copy_buffers)
2086       return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
2087    return dri2_dpy->vtbl->copy_buffers(drv, disp, surf, native_pixmap_target);
2088 }
2089
2090 static EGLint
2091 dri2_query_buffer_age(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
2092 {
2093    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2094    if (!dri2_dpy->vtbl->query_buffer_age)
2095       return 0;
2096    return dri2_dpy->vtbl->query_buffer_age(drv, disp, surf);
2097 }
2098
2099 static EGLBoolean
2100 dri2_wait_client(const _EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
2101 {
2102    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2103    _EGLSurface *surf = ctx->DrawSurface;
2104    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2105
2106    (void) drv;
2107
2108    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
2109     * we need to copy fake to real here.*/
2110
2111    if (dri2_dpy->flush != NULL)
2112       dri2_dpy->flush->flush(dri_drawable);
2113
2114    return EGL_TRUE;
2115 }
2116
2117 static EGLBoolean
2118 dri2_wait_native(const _EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
2119 {
2120    (void) drv;
2121    (void) disp;
2122
2123    if (engine != EGL_CORE_NATIVE_ENGINE)
2124       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
2125    /* glXWaitX(); */
2126
2127    return EGL_TRUE;
2128 }
2129
2130 static EGLBoolean
2131 dri2_bind_tex_image(const _EGLDriver *drv,
2132                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2133 {
2134    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2135    struct dri2_egl_context *dri2_ctx;
2136    _EGLContext *ctx;
2137    GLint format, target;
2138    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2139
2140    ctx = _eglGetCurrentContext();
2141    dri2_ctx = dri2_egl_context(ctx);
2142
2143    if (!_eglBindTexImage(drv, disp, surf, buffer))
2144       return EGL_FALSE;
2145
2146    switch (surf->TextureFormat) {
2147    case EGL_TEXTURE_RGB:
2148       format = __DRI_TEXTURE_FORMAT_RGB;
2149       break;
2150    case EGL_TEXTURE_RGBA:
2151       format = __DRI_TEXTURE_FORMAT_RGBA;
2152       break;
2153    default:
2154       assert(!"Unexpected texture format in dri2_bind_tex_image()");
2155       format = __DRI_TEXTURE_FORMAT_RGBA;
2156    }
2157
2158    switch (surf->TextureTarget) {
2159    case EGL_TEXTURE_2D:
2160       target = GL_TEXTURE_2D;
2161       break;
2162    default:
2163       target = GL_TEXTURE_2D;
2164       assert(!"Unexpected texture target in dri2_bind_tex_image()");
2165    }
2166
2167    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
2168                                        target, format,
2169                                        dri_drawable);
2170
2171    return EGL_TRUE;
2172 }
2173
2174 static EGLBoolean
2175 dri2_release_tex_image(const _EGLDriver *drv,
2176                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2177 {
2178    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2179    struct dri2_egl_context *dri2_ctx;
2180    _EGLContext *ctx;
2181    GLint  target;
2182    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2183
2184    ctx = _eglGetCurrentContext();
2185    dri2_ctx = dri2_egl_context(ctx);
2186
2187    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
2188       return EGL_FALSE;
2189
2190    switch (surf->TextureTarget) {
2191    case EGL_TEXTURE_2D:
2192       target = GL_TEXTURE_2D;
2193       break;
2194    default:
2195       assert(!"missing texture target");
2196    }
2197
2198    if (dri2_dpy->tex_buffer->base.version >= 3 &&
2199        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
2200       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
2201                                              target, dri_drawable);
2202    }
2203
2204    return EGL_TRUE;
2205 }
2206
2207 static _EGLImage*
2208 dri2_create_image(const _EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx,
2209                   EGLenum target, EGLClientBuffer buffer,
2210                   const EGLint *attr_list)
2211 {
2212    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2213    return dri2_dpy->vtbl->create_image(drv, disp, ctx, target, buffer,
2214                                        attr_list);
2215 }
2216
2217 static _EGLImage *
2218 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
2219 {
2220    struct dri2_egl_image *dri2_img;
2221
2222    if (dri_image == NULL) {
2223       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2224       return NULL;
2225    }
2226
2227    dri2_img = malloc(sizeof *dri2_img);
2228    if (!dri2_img) {
2229       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2230       return NULL;
2231    }
2232
2233    _eglInitImage(&dri2_img->base, disp);
2234
2235    dri2_img->dri_image = dri_image;
2236
2237    return &dri2_img->base;
2238 }
2239
2240 /**
2241  * Translate a DRI Image extension error code into an EGL error code.
2242  */
2243 static EGLint
2244 egl_error_from_dri_image_error(int dri_error)
2245 {
2246    switch (dri_error) {
2247    case __DRI_IMAGE_ERROR_SUCCESS:
2248       return EGL_SUCCESS;
2249    case __DRI_IMAGE_ERROR_BAD_ALLOC:
2250       return EGL_BAD_ALLOC;
2251    case __DRI_IMAGE_ERROR_BAD_MATCH:
2252       return EGL_BAD_MATCH;
2253    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
2254       return EGL_BAD_PARAMETER;
2255    case __DRI_IMAGE_ERROR_BAD_ACCESS:
2256       return EGL_BAD_ACCESS;
2257    default:
2258       assert(!"unknown dri_error code");
2259       return EGL_BAD_ALLOC;
2260    }
2261 }
2262
2263 static _EGLImage *
2264 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
2265                                    EGLClientBuffer buffer,
2266                                    const EGLint *attr_list)
2267 {
2268    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2269    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2270    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
2271    __DRIimage *dri_image;
2272
2273    if (renderbuffer == 0) {
2274       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2275       return EGL_NO_IMAGE_KHR;
2276    }
2277
2278    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
2279       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2280       return EGL_NO_IMAGE_KHR;
2281    }
2282
2283    if (dri2_dpy->image->base.version >= 17 &&
2284        dri2_dpy->image->createImageFromRenderbuffer2) {
2285       unsigned error = ~0;
2286
2287       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
2288                dri2_ctx->dri_context, renderbuffer, NULL, &error);
2289
2290       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
2291
2292       if (!dri_image) {
2293          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
2294          return EGL_NO_IMAGE_KHR;
2295       }
2296    } else {
2297       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
2298                dri2_ctx->dri_context, renderbuffer, NULL);
2299       if (!dri_image) {
2300          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2301          return EGL_NO_IMAGE_KHR;
2302       }
2303    }
2304
2305    return dri2_create_image_from_dri(disp, dri_image);
2306 }
2307
2308 #ifdef HAVE_WAYLAND_PLATFORM
2309
2310 /* This structure describes how a wl_buffer maps to one or more
2311  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
2312  * offsets and strides of the planes in the buffer.  This table maps a
2313  * wl_drm format code to a description of the planes in the buffer
2314  * that lets us create a __DRIimage for each of the planes. */
2315
2316 static const struct wl_drm_components_descriptor {
2317    uint32_t dri_components;
2318    EGLint components;
2319    int nplanes;
2320 } wl_drm_components[] = {
2321    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
2322    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
2323    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
2324    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
2325    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
2326 };
2327
2328 static _EGLImage *
2329 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2330                                     EGLClientBuffer _buffer,
2331                                     const EGLint *attr_list)
2332 {
2333    struct wl_drm_buffer *buffer;
2334    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2335    const struct wl_drm_components_descriptor *f;
2336    __DRIimage *dri_image;
2337    _EGLImageAttribs attrs;
2338    int32_t plane;
2339
2340    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
2341                                    (struct wl_resource *) _buffer);
2342    if (!buffer)
2343        return NULL;
2344
2345    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2346       return NULL;
2347
2348    plane = attrs.PlaneWL;
2349    f = buffer->driver_format;
2350    if (plane < 0 || plane >= f->nplanes) {
2351       _eglError(EGL_BAD_PARAMETER,
2352                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2353       return NULL;
2354    }
2355
2356    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2357    if (dri_image == NULL && plane == 0)
2358       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
2359    if (dri_image == NULL) {
2360       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2361       return NULL;
2362    }
2363
2364    return dri2_create_image_from_dri(disp, dri_image);
2365 }
2366 #endif
2367
2368 static EGLBoolean
2369 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
2370                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2371                               EGLuint64KHR *sbc)
2372 {
2373    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2374    if (!dri2_dpy->vtbl->get_sync_values)
2375       return EGL_FALSE;
2376    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
2377 }
2378
2379 /**
2380  * Set the error code after a call to
2381  * dri2_egl_image::dri_image::createImageFromTexture.
2382  */
2383 static void
2384 dri2_create_image_khr_texture_error(int dri_error)
2385 {
2386    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2387
2388    if (egl_error != EGL_SUCCESS)
2389       _eglError(egl_error, "dri2_create_image_khr_texture");
2390 }
2391
2392 static _EGLImage *
2393 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2394                                    EGLenum target,
2395                                    EGLClientBuffer buffer,
2396                                    const EGLint *attr_list)
2397 {
2398    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2399    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2400    struct dri2_egl_image *dri2_img;
2401    GLuint texture = (GLuint) (uintptr_t) buffer;
2402    _EGLImageAttribs attrs;
2403    GLuint depth;
2404    GLenum gl_target;
2405    unsigned error;
2406
2407    if (texture == 0) {
2408       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2409       return EGL_NO_IMAGE_KHR;
2410    }
2411
2412    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2413       return EGL_NO_IMAGE_KHR;
2414
2415    switch (target) {
2416    case EGL_GL_TEXTURE_2D_KHR:
2417       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2418          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2419          return EGL_NO_IMAGE_KHR;
2420       }
2421       depth = 0;
2422       gl_target = GL_TEXTURE_2D;
2423       break;
2424    case EGL_GL_TEXTURE_3D_KHR:
2425       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2426          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2427          return EGL_NO_IMAGE_KHR;
2428       }
2429
2430       depth = attrs.GLTextureZOffset;
2431       gl_target = GL_TEXTURE_3D;
2432       break;
2433    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2434    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2435    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2436    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2437    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2438    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2439       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2440          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2441          return EGL_NO_IMAGE_KHR;
2442       }
2443
2444       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2445       gl_target = GL_TEXTURE_CUBE_MAP;
2446       break;
2447    default:
2448       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2449       return EGL_NO_IMAGE_KHR;
2450    }
2451
2452    dri2_img = malloc(sizeof *dri2_img);
2453    if (!dri2_img) {
2454       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2455       return EGL_NO_IMAGE_KHR;
2456    }
2457
2458    _eglInitImage(&dri2_img->base, disp);
2459
2460    dri2_img->dri_image =
2461       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2462                                               gl_target,
2463                                               texture,
2464                                               depth,
2465                                               attrs.GLTextureLevel,
2466                                               &error,
2467                                               dri2_img);
2468    dri2_create_image_khr_texture_error(error);
2469
2470    if (!dri2_img->dri_image) {
2471       free(dri2_img);
2472       return EGL_NO_IMAGE_KHR;
2473    }
2474    return &dri2_img->base;
2475 }
2476
2477 static EGLBoolean
2478 dri2_query_surface(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2479                    EGLint attribute, EGLint *value)
2480 {
2481    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2482    if (!dri2_dpy->vtbl->query_surface)
2483       return _eglQuerySurface(drv, disp, surf, attribute, value);
2484    return dri2_dpy->vtbl->query_surface(drv, disp, surf, attribute, value);
2485 }
2486
2487 static struct wl_buffer*
2488 dri2_create_wayland_buffer_from_image(const _EGLDriver *drv, _EGLDisplay *disp,
2489                                       _EGLImage *img)
2490 {
2491    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2492    if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
2493       return NULL;
2494    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, disp, img);
2495 }
2496
2497 #ifdef HAVE_LIBDRM
2498 static _EGLImage *
2499 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2500                                   EGLClientBuffer buffer, const EGLint *attr_list)
2501 {
2502    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2503    EGLint format, name, pitch;
2504    _EGLImageAttribs attrs;
2505    __DRIimage *dri_image;
2506
2507    name = (EGLint) (uintptr_t) buffer;
2508
2509    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2510       return NULL;
2511
2512    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2513        attrs.DRMBufferStrideMESA <= 0) {
2514       _eglError(EGL_BAD_PARAMETER,
2515                 "bad width, height or stride");
2516       return NULL;
2517    }
2518
2519    switch (attrs.DRMBufferFormatMESA) {
2520    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2521       format = __DRI_IMAGE_FORMAT_ARGB8888;
2522       pitch = attrs.DRMBufferStrideMESA;
2523       break;
2524    default:
2525       _eglError(EGL_BAD_PARAMETER,
2526                 "dri2_create_image_khr: unsupported pixmap depth");
2527       return NULL;
2528    }
2529
2530    dri_image =
2531       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2532                                            attrs.Width,
2533                                            attrs.Height,
2534                                            format,
2535                                            name,
2536                                            pitch,
2537                                            NULL);
2538
2539    return dri2_create_image_from_dri(disp, dri_image);
2540 }
2541
2542 static EGLBoolean
2543 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2544 {
2545    /**
2546      * The spec says:
2547      *
2548      * "Required attributes and their values are as follows:
2549      *
2550      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2551      *
2552      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2553      *    by drm_fourcc.h and used as the pixel_format parameter of the
2554      *    drm_mode_fb_cmd2 ioctl."
2555      *
2556      * and
2557      *
2558      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2559      *    incomplete, EGL_BAD_PARAMETER is generated."
2560      */
2561    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2562        !attrs->DMABufFourCC.IsPresent)
2563       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2564
2565    /**
2566     * Also:
2567     *
2568     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2569     *  specified for a plane's pitch or offset isn't supported by EGL,
2570     *  EGL_BAD_ACCESS is generated."
2571     */
2572    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2573       if (attrs->DMABufPlanePitches[i].IsPresent &&
2574           attrs->DMABufPlanePitches[i].Value <= 0)
2575          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2576    }
2577
2578    /**
2579     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2580     * attribute values may be given.
2581     *
2582     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2583     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2584     */
2585    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2586       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2587           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2588          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2589    }
2590
2591    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2592     * mandate it, we only accept the same modifier across all planes. */
2593    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2594       if (attrs->DMABufPlaneFds[i].IsPresent) {
2595          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2596                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2597              (attrs->DMABufPlaneModifiersLo[0].Value !=
2598                attrs->DMABufPlaneModifiersLo[i].Value) ||
2599              (attrs->DMABufPlaneModifiersHi[0].Value !=
2600                attrs->DMABufPlaneModifiersHi[i].Value))
2601             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2602       }
2603    }
2604
2605    return EGL_TRUE;
2606 }
2607
2608 /* Returns the total number of planes for the format or zero if it isn't a
2609  * valid fourcc format.
2610  */
2611 static unsigned
2612 dri2_num_fourcc_format_planes(EGLint format)
2613 {
2614    switch (format) {
2615    case DRM_FORMAT_R8:
2616    case DRM_FORMAT_RG88:
2617    case DRM_FORMAT_GR88:
2618    case DRM_FORMAT_R16:
2619    case DRM_FORMAT_GR1616:
2620    case DRM_FORMAT_RGB332:
2621    case DRM_FORMAT_BGR233:
2622    case DRM_FORMAT_XRGB4444:
2623    case DRM_FORMAT_XBGR4444:
2624    case DRM_FORMAT_RGBX4444:
2625    case DRM_FORMAT_BGRX4444:
2626    case DRM_FORMAT_ARGB4444:
2627    case DRM_FORMAT_ABGR4444:
2628    case DRM_FORMAT_RGBA4444:
2629    case DRM_FORMAT_BGRA4444:
2630    case DRM_FORMAT_XRGB1555:
2631    case DRM_FORMAT_XBGR1555:
2632    case DRM_FORMAT_RGBX5551:
2633    case DRM_FORMAT_BGRX5551:
2634    case DRM_FORMAT_ARGB1555:
2635    case DRM_FORMAT_ABGR1555:
2636    case DRM_FORMAT_RGBA5551:
2637    case DRM_FORMAT_BGRA5551:
2638    case DRM_FORMAT_RGB565:
2639    case DRM_FORMAT_BGR565:
2640    case DRM_FORMAT_RGB888:
2641    case DRM_FORMAT_BGR888:
2642    case DRM_FORMAT_XRGB8888:
2643    case DRM_FORMAT_XBGR8888:
2644    case DRM_FORMAT_RGBX8888:
2645    case DRM_FORMAT_BGRX8888:
2646    case DRM_FORMAT_ARGB8888:
2647    case DRM_FORMAT_ABGR8888:
2648    case DRM_FORMAT_RGBA8888:
2649    case DRM_FORMAT_BGRA8888:
2650    case DRM_FORMAT_XRGB2101010:
2651    case DRM_FORMAT_XBGR2101010:
2652    case DRM_FORMAT_RGBX1010102:
2653    case DRM_FORMAT_BGRX1010102:
2654    case DRM_FORMAT_ARGB2101010:
2655    case DRM_FORMAT_ABGR2101010:
2656    case DRM_FORMAT_RGBA1010102:
2657    case DRM_FORMAT_BGRA1010102:
2658    case DRM_FORMAT_XBGR16161616F:
2659    case DRM_FORMAT_ABGR16161616F:
2660    case DRM_FORMAT_YUYV:
2661    case DRM_FORMAT_YVYU:
2662    case DRM_FORMAT_UYVY:
2663    case DRM_FORMAT_VYUY:
2664    case DRM_FORMAT_AYUV:
2665    case DRM_FORMAT_XYUV8888:
2666       return 1;
2667
2668    case DRM_FORMAT_NV12:
2669    case DRM_FORMAT_NV21:
2670    case DRM_FORMAT_NV16:
2671    case DRM_FORMAT_NV61:
2672    case DRM_FORMAT_P010:
2673    case DRM_FORMAT_P012:
2674    case DRM_FORMAT_P016:
2675       return 2;
2676
2677    case DRM_FORMAT_YUV410:
2678    case DRM_FORMAT_YVU410:
2679    case DRM_FORMAT_YUV411:
2680    case DRM_FORMAT_YVU411:
2681    case DRM_FORMAT_YUV420:
2682    case DRM_FORMAT_YVU420:
2683    case DRM_FORMAT_YUV422:
2684    case DRM_FORMAT_YVU422:
2685    case DRM_FORMAT_YUV444:
2686    case DRM_FORMAT_YVU444:
2687       return 3;
2688
2689    default:
2690       return 0;
2691    }
2692 }
2693
2694 /* Returns the total number of file descriptors. Zero indicates an error. */
2695 static unsigned
2696 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2697 {
2698    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2699    if (plane_n == 0) {
2700       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2701       return 0;
2702    }
2703
2704    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2705       /**
2706        * The modifiers extension spec says:
2707        *
2708        * "Modifiers may modify any attribute of a buffer import, including
2709        *  but not limited to adding extra planes to a format which
2710        *  otherwise does not have those planes. As an example, a modifier
2711        *  may add a plane for an external compression buffer to a
2712        *  single-plane format. The exact meaning and effect of any
2713        *  modifier is canonically defined by drm_fourcc.h, not as part of
2714        *  this extension."
2715        */
2716       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2717           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2718          plane_n = i + 1;
2719       }
2720    }
2721
2722    /**
2723      * The spec says:
2724      *
2725      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2726      *    incomplete, EGL_BAD_PARAMETER is generated."
2727      */
2728    for (unsigned i = 0; i < plane_n; ++i) {
2729       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2730           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2731           !attrs->DMABufPlanePitches[i].IsPresent) {
2732          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2733          return 0;
2734       }
2735    }
2736
2737    /**
2738     * The spec also says:
2739     *
2740     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2741     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2742     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2743     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2744     */
2745    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2746       if (attrs->DMABufPlaneFds[i].IsPresent ||
2747           attrs->DMABufPlaneOffsets[i].IsPresent ||
2748           attrs->DMABufPlanePitches[i].IsPresent) {
2749          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2750          return 0;
2751       }
2752    }
2753
2754    return plane_n;
2755 }
2756
2757 static EGLBoolean
2758 dri2_query_dma_buf_formats(const _EGLDriver *drv, _EGLDisplay *disp,
2759                             EGLint max, EGLint *formats, EGLint *count)
2760 {
2761    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2762    if (max < 0 || (max > 0 && formats == NULL))
2763       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2764
2765    if (dri2_dpy->image->base.version < 15 ||
2766        dri2_dpy->image->queryDmaBufFormats == NULL)
2767       return EGL_FALSE;
2768
2769    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2770                                             formats, count))
2771       return EGL_FALSE;
2772
2773    if (max > 0) {
2774       /* Assert that all of the formats returned are actually fourcc formats.
2775        * Some day, if we want the internal interface function to be able to
2776        * return the fake fourcc formats defined in dri_interface.h, we'll have
2777        * to do something more clever here to pair the list down to just real
2778        * fourcc formats so that we don't leak the fake internal ones.
2779        */
2780       for (int i = 0; i < *count; i++) {
2781          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2782       }
2783    }
2784
2785    return EGL_TRUE;
2786 }
2787
2788 static EGLBoolean
2789 dri2_query_dma_buf_modifiers(const _EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2790                              EGLint max, EGLuint64KHR *modifiers,
2791                              EGLBoolean *external_only, EGLint *count)
2792 {
2793    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2794
2795    if (dri2_num_fourcc_format_planes(format) == 0)
2796       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2797
2798    if (max < 0)
2799       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2800
2801    if (max > 0 && modifiers == NULL)
2802       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2803
2804    if (dri2_dpy->image->base.version < 15 ||
2805        dri2_dpy->image->queryDmaBufModifiers == NULL)
2806       return EGL_FALSE;
2807
2808    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2809                                              max, modifiers,
2810                                              (unsigned int *) external_only,
2811                                              count) == false)
2812       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2813
2814    return EGL_TRUE;
2815 }
2816
2817 /**
2818  * The spec says:
2819  *
2820  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2821  *  EGL will take a reference to the dma_buf(s) which it will release at any
2822  *  time while the EGLDisplay is initialized. It is the responsibility of the
2823  *  application to close the dma_buf file descriptors."
2824  *
2825  * Therefore we must never close or otherwise modify the file descriptors.
2826  */
2827 _EGLImage *
2828 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2829                           EGLClientBuffer buffer, const EGLint *attr_list)
2830 {
2831    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2832    _EGLImage *res;
2833    _EGLImageAttribs attrs;
2834    __DRIimage *dri_image;
2835    unsigned num_fds;
2836    int fds[DMA_BUF_MAX_PLANES];
2837    int pitches[DMA_BUF_MAX_PLANES];
2838    int offsets[DMA_BUF_MAX_PLANES];
2839    uint64_t modifier;
2840    bool has_modifier = false;
2841    unsigned error;
2842
2843    /**
2844     * The spec says:
2845     *
2846     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2847     *     error EGL_BAD_PARAMETER is generated."
2848     */
2849    if (buffer != NULL) {
2850       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2851       return NULL;
2852    }
2853
2854    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2855       return NULL;
2856
2857    if (!dri2_check_dma_buf_attribs(&attrs))
2858       return NULL;
2859
2860    num_fds = dri2_check_dma_buf_format(&attrs);
2861    if (!num_fds)
2862       return NULL;
2863
2864    for (unsigned i = 0; i < num_fds; ++i) {
2865       fds[i] = attrs.DMABufPlaneFds[i].Value;
2866       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2867       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2868    }
2869
2870    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2871     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2872     * attrs.DMABufPlaneModifiersHi[0] */
2873    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2874       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2875                                       attrs.DMABufPlaneModifiersLo[0].Value);
2876       has_modifier = true;
2877    }
2878
2879    if (has_modifier) {
2880       if (dri2_dpy->image->base.version < 15 ||
2881           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2882          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2883          return EGL_NO_IMAGE_KHR;
2884       }
2885       dri_image =
2886          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2887             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2888             modifier, fds, num_fds, pitches, offsets,
2889             attrs.DMABufYuvColorSpaceHint.Value,
2890             attrs.DMABufSampleRangeHint.Value,
2891             attrs.DMABufChromaHorizontalSiting.Value,
2892             attrs.DMABufChromaVerticalSiting.Value,
2893             &error,
2894             NULL);
2895    }
2896    else {
2897       dri_image =
2898          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2899             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2900             fds, num_fds, pitches, offsets,
2901             attrs.DMABufYuvColorSpaceHint.Value,
2902             attrs.DMABufSampleRangeHint.Value,
2903             attrs.DMABufChromaHorizontalSiting.Value,
2904             attrs.DMABufChromaVerticalSiting.Value,
2905             &error,
2906             NULL);
2907    }
2908    dri2_create_image_khr_texture_error(error);
2909
2910    if (!dri_image)
2911       return EGL_NO_IMAGE_KHR;
2912
2913    res = dri2_create_image_from_dri(disp, dri_image);
2914
2915    return res;
2916 }
2917 static _EGLImage *
2918 dri2_create_drm_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp,
2919                            const EGLint *attr_list)
2920 {
2921    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2922    struct dri2_egl_image *dri2_img;
2923    _EGLImageAttribs attrs;
2924    unsigned int dri_use, valid_mask;
2925    int format;
2926
2927    (void) drv;
2928
2929    if (!attr_list) {
2930       _eglError(EGL_BAD_PARAMETER, __func__);
2931       return EGL_NO_IMAGE_KHR;
2932    }
2933
2934    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2935       return EGL_NO_IMAGE_KHR;
2936
2937    if (attrs.Width <= 0 || attrs.Height <= 0) {
2938       _eglError(EGL_BAD_PARAMETER, __func__);
2939       return EGL_NO_IMAGE_KHR;
2940    }
2941
2942    switch (attrs.DRMBufferFormatMESA) {
2943    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2944       format = __DRI_IMAGE_FORMAT_ARGB8888;
2945       break;
2946    default:
2947       _eglError(EGL_BAD_PARAMETER, __func__);
2948       return EGL_NO_IMAGE_KHR;
2949    }
2950
2951    valid_mask =
2952       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2953       EGL_DRM_BUFFER_USE_SHARE_MESA |
2954       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2955    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2956       _eglError(EGL_BAD_PARAMETER, __func__);
2957       return EGL_NO_IMAGE_KHR;
2958    }
2959
2960    dri_use = 0;
2961    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2962       dri_use |= __DRI_IMAGE_USE_SHARE;
2963    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2964       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2965    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2966       dri_use |= __DRI_IMAGE_USE_CURSOR;
2967
2968    dri2_img = malloc(sizeof *dri2_img);
2969    if (!dri2_img) {
2970       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2971       return EGL_NO_IMAGE_KHR;
2972    }
2973
2974    _eglInitImage(&dri2_img->base, disp);
2975
2976    dri2_img->dri_image =
2977       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2978                                    attrs.Width, attrs.Height,
2979                                    format, dri_use, dri2_img);
2980    if (dri2_img->dri_image == NULL) {
2981       free(dri2_img);
2982        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2983       return EGL_NO_IMAGE_KHR;
2984    }
2985
2986    return &dri2_img->base;
2987 }
2988
2989 static EGLBoolean
2990 dri2_export_drm_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2991                           EGLint *name, EGLint *handle, EGLint *stride)
2992 {
2993    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2994    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2995
2996    (void) drv;
2997
2998    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2999                                             __DRI_IMAGE_ATTRIB_NAME, name))
3000       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
3001
3002    if (handle)
3003       dri2_dpy->image->queryImage(dri2_img->dri_image,
3004                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
3005
3006    if (stride)
3007       dri2_dpy->image->queryImage(dri2_img->dri_image,
3008                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
3009
3010    return EGL_TRUE;
3011 }
3012
3013 /**
3014  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
3015
3016  * The spec provides a boolean return for the driver to reject exporting for
3017  * basically any reason, but doesn't specify any particular error cases.  For
3018  * now, we just fail if we don't have a DRM fourcc for the format.
3019  */
3020 static bool
3021 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
3022 {
3023    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3024    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3025    EGLint fourcc;
3026
3027    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
3028                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
3029       return false;
3030    }
3031
3032    return true;
3033 }
3034
3035 static EGLBoolean
3036 dri2_export_dma_buf_image_query_mesa(const _EGLDriver *drv, _EGLDisplay *disp,
3037                                      _EGLImage *img,
3038                                      EGLint *fourcc, EGLint *nplanes,
3039                                      EGLuint64KHR *modifiers)
3040 {
3041    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3042    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3043    int num_planes;
3044
3045    (void) drv;
3046
3047    if (!dri2_can_export_dma_buf_image(disp, img))
3048       return EGL_FALSE;
3049
3050    dri2_dpy->image->queryImage(dri2_img->dri_image,
3051                                __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
3052    if (nplanes)
3053      *nplanes = num_planes;
3054
3055    if (fourcc)
3056       dri2_dpy->image->queryImage(dri2_img->dri_image,
3057                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
3058
3059    if (modifiers) {
3060       int mod_hi, mod_lo;
3061       uint64_t modifier = DRM_FORMAT_MOD_INVALID;
3062       bool query;
3063
3064       query = dri2_dpy->image->queryImage(dri2_img->dri_image,
3065                                           __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
3066                                           &mod_hi);
3067       query &= dri2_dpy->image->queryImage(dri2_img->dri_image,
3068                                            __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
3069                                            &mod_lo);
3070       if (query)
3071          modifier = combine_u32_into_u64 (mod_hi, mod_lo);
3072
3073       for (int i = 0; i < num_planes; i++)
3074         modifiers[i] = modifier;
3075    }
3076
3077    return EGL_TRUE;
3078 }
3079
3080 static EGLBoolean
3081 dri2_export_dma_buf_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
3082                                int *fds, EGLint *strides, EGLint *offsets)
3083 {
3084    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3085    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3086    EGLint nplanes;
3087
3088    (void) drv;
3089
3090    if (!dri2_can_export_dma_buf_image(disp, img))
3091       return EGL_FALSE;
3092
3093    /* EGL_MESA_image_dma_buf_export spec says:
3094     *    "If the number of fds is less than the number of planes, then
3095     *    subsequent fd slots should contain -1."
3096     */
3097    if (fds) {
3098       /* Query nplanes so that we know how big the given array is. */
3099       dri2_dpy->image->queryImage(dri2_img->dri_image,
3100                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
3101       memset(fds, -1, nplanes * sizeof(int));
3102    }
3103
3104    /* rework later to provide multiple fds/strides/offsets */
3105    if (fds)
3106       dri2_dpy->image->queryImage(dri2_img->dri_image,
3107                                   __DRI_IMAGE_ATTRIB_FD, fds);
3108
3109    if (strides)
3110       dri2_dpy->image->queryImage(dri2_img->dri_image,
3111                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
3112
3113    if (offsets) {
3114       int img_offset;
3115       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
3116                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
3117       if (ret)
3118          offsets[0] = img_offset;
3119       else
3120          offsets[0] = 0;
3121    }
3122
3123    return EGL_TRUE;
3124 }
3125
3126 #endif
3127
3128 _EGLImage *
3129 dri2_create_image_khr(const _EGLDriver *drv, _EGLDisplay *disp,
3130                       _EGLContext *ctx, EGLenum target,
3131                       EGLClientBuffer buffer, const EGLint *attr_list)
3132 {
3133    (void) drv;
3134
3135    switch (target) {
3136    case EGL_GL_TEXTURE_2D_KHR:
3137    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
3138    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
3139    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
3140    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
3141    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
3142    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
3143    case EGL_GL_TEXTURE_3D_KHR:
3144       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
3145    case EGL_GL_RENDERBUFFER_KHR:
3146       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
3147 #ifdef HAVE_LIBDRM
3148    case EGL_DRM_BUFFER_MESA:
3149       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
3150    case EGL_LINUX_DMA_BUF_EXT:
3151       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
3152 #endif
3153 #ifdef HAVE_WAYLAND_PLATFORM
3154    case EGL_WAYLAND_BUFFER_WL:
3155       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
3156 #endif
3157    default:
3158       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
3159       return EGL_NO_IMAGE_KHR;
3160    }
3161 }
3162
3163 static EGLBoolean
3164 dri2_destroy_image_khr(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
3165 {
3166    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3167    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
3168
3169    (void) drv;
3170
3171    dri2_dpy->image->destroyImage(dri2_img->dri_image);
3172    free(dri2_img);
3173
3174    return EGL_TRUE;
3175 }
3176
3177 #ifdef HAVE_WAYLAND_PLATFORM
3178
3179 static void
3180 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
3181                          struct wl_drm_buffer *buffer)
3182 {
3183    _EGLDisplay *disp = user_data;
3184    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3185    __DRIimage *img;
3186    int dri_components = 0;
3187
3188    if (fd == -1)
3189       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
3190                                                   buffer->width,
3191                                                   buffer->height,
3192                                                   buffer->format,
3193                                                   (int*)&name, 1,
3194                                                   buffer->stride,
3195                                                   buffer->offset,
3196                                                   NULL);
3197    else
3198       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
3199                                                 buffer->width,
3200                                                 buffer->height,
3201                                                 buffer->format,
3202                                                 &fd, 1,
3203                                                 buffer->stride,
3204                                                 buffer->offset,
3205                                                 NULL);
3206
3207    if (img == NULL)
3208       return;
3209
3210    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
3211
3212    buffer->driver_format = NULL;
3213    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
3214       if (wl_drm_components[i].dri_components == dri_components)
3215          buffer->driver_format = &wl_drm_components[i];
3216
3217    if (buffer->driver_format == NULL)
3218       dri2_dpy->image->destroyImage(img);
3219    else
3220       buffer->driver_buffer = img;
3221 }
3222
3223 static void
3224 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
3225 {
3226    _EGLDisplay *disp = user_data;
3227    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3228
3229    dri2_dpy->image->destroyImage(buffer->driver_buffer);
3230 }
3231
3232 static EGLBoolean
3233 dri2_bind_wayland_display_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3234                              struct wl_display *wl_dpy)
3235 {
3236    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3237    const struct wayland_drm_callbacks wl_drm_callbacks = {
3238       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
3239       .reference_buffer = dri2_wl_reference_buffer,
3240       .release_buffer = dri2_wl_release_buffer,
3241       .is_format_supported = dri2_wl_is_format_supported
3242    };
3243    int flags = 0;
3244    uint64_t cap;
3245
3246    (void) drv;
3247
3248    if (dri2_dpy->wl_server_drm)
3249            return EGL_FALSE;
3250
3251    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
3252        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
3253        dri2_dpy->image->base.version >= 7 &&
3254        dri2_dpy->image->createImageFromFds != NULL)
3255       flags |= WAYLAND_DRM_PRIME;
3256
3257    dri2_dpy->wl_server_drm =
3258            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
3259                             &wl_drm_callbacks, disp, flags);
3260
3261    if (!dri2_dpy->wl_server_drm)
3262            return EGL_FALSE;
3263
3264 #ifdef HAVE_DRM_PLATFORM
3265    /* We have to share the wl_drm instance with gbm, so gbm can convert
3266     * wl_buffers to gbm bos. */
3267    if (dri2_dpy->gbm_dri)
3268       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
3269 #endif
3270
3271    return EGL_TRUE;
3272 }
3273
3274 static EGLBoolean
3275 dri2_unbind_wayland_display_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3276                                struct wl_display *wl_dpy)
3277 {
3278    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3279
3280    (void) drv;
3281
3282    if (!dri2_dpy->wl_server_drm)
3283            return EGL_FALSE;
3284
3285    wayland_drm_uninit(dri2_dpy->wl_server_drm);
3286    dri2_dpy->wl_server_drm = NULL;
3287
3288    return EGL_TRUE;
3289 }
3290
3291 static EGLBoolean
3292 dri2_query_wayland_buffer_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3293                              struct wl_resource *buffer_resource,
3294                              EGLint attribute, EGLint *value)
3295 {
3296    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3297    struct wl_drm_buffer *buffer;
3298    const struct wl_drm_components_descriptor *format;
3299
3300    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
3301    if (!buffer)
3302       return EGL_FALSE;
3303
3304    format = buffer->driver_format;
3305    switch (attribute) {
3306    case EGL_TEXTURE_FORMAT:
3307       *value = format->components;
3308       return EGL_TRUE;
3309    case EGL_WIDTH:
3310       *value = buffer->width;
3311       return EGL_TRUE;
3312    case EGL_HEIGHT:
3313       *value = buffer->height;
3314       return EGL_TRUE;
3315    }
3316
3317    return EGL_FALSE;
3318 }
3319 #endif
3320
3321 static void
3322 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
3323 {
3324    p_atomic_inc(&sync->refcount);
3325 }
3326
3327 static void
3328 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
3329                     struct dri2_egl_sync *dri2_sync)
3330 {
3331    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
3332       switch (dri2_sync->base.Type) {
3333       case EGL_SYNC_REUSABLE_KHR:
3334          cnd_destroy(&dri2_sync->cond);
3335          break;
3336       case EGL_SYNC_NATIVE_FENCE_ANDROID:
3337          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
3338             close(dri2_sync->base.SyncFd);
3339          break;
3340       default:
3341          break;
3342       }
3343
3344       if (dri2_sync->fence)
3345          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
3346
3347       free(dri2_sync);
3348    }
3349 }
3350
3351 static _EGLSync *
3352 dri2_create_sync(const _EGLDriver *drv, _EGLDisplay *disp,
3353                  EGLenum type, const EGLAttrib *attrib_list)
3354 {
3355    _EGLContext *ctx = _eglGetCurrentContext();
3356    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3357    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3358    struct dri2_egl_sync *dri2_sync;
3359    EGLint ret;
3360    pthread_condattr_t attr;
3361
3362    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
3363    if (!dri2_sync) {
3364       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3365       return NULL;
3366    }
3367
3368    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
3369       free(dri2_sync);
3370       return NULL;
3371    }
3372
3373    switch (type) {
3374    case EGL_SYNC_FENCE_KHR:
3375       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
3376       if (!dri2_sync->fence) {
3377          /* Why did it fail? DRI doesn't return an error code, so we emit
3378           * a generic EGL error that doesn't communicate user error.
3379           */
3380          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3381          free(dri2_sync);
3382          return NULL;
3383       }
3384       break;
3385
3386    case EGL_SYNC_CL_EVENT_KHR:
3387       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
3388                                  dri2_dpy->dri_screen,
3389                                  dri2_sync->base.CLEvent);
3390       /* this can only happen if the cl_event passed in is invalid. */
3391       if (!dri2_sync->fence) {
3392          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3393          free(dri2_sync);
3394          return NULL;
3395       }
3396
3397       /* the initial status must be "signaled" if the cl_event is signaled */
3398       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
3399                                             dri2_sync->fence, 0, 0))
3400          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3401       break;
3402
3403    case EGL_SYNC_REUSABLE_KHR:
3404       /* intialize attr */
3405       ret = pthread_condattr_init(&attr);
3406
3407       if (ret) {
3408          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3409          free(dri2_sync);
3410          return NULL;
3411       }
3412
3413       /* change clock attribute to CLOCK_MONOTONIC */
3414       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
3415
3416       if (ret) {
3417          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3418          free(dri2_sync);
3419          return NULL;
3420       }
3421
3422       ret = pthread_cond_init(&dri2_sync->cond, &attr);
3423
3424       if (ret) {
3425          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3426          free(dri2_sync);
3427          return NULL;
3428       }
3429
3430       /* initial status of reusable sync must be "unsignaled" */
3431       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3432       break;
3433
3434    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3435       if (dri2_dpy->fence->create_fence_fd) {
3436          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3437                                     dri2_ctx->dri_context,
3438                                     dri2_sync->base.SyncFd);
3439       }
3440       if (!dri2_sync->fence) {
3441          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3442          free(dri2_sync);
3443          return NULL;
3444       }
3445       break;
3446    }
3447
3448    p_atomic_set(&dri2_sync->refcount, 1);
3449    return &dri2_sync->base;
3450 }
3451
3452 static EGLBoolean
3453 dri2_destroy_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3454 {
3455    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3456    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3457    EGLint ret = EGL_TRUE;
3458    EGLint err;
3459
3460    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3461     * then unlock all threads possibly blocked by the reusable sync before
3462     * destroying it.
3463     */
3464    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3465        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3466       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3467       /* unblock all threads currently blocked by sync */
3468       err = cnd_broadcast(&dri2_sync->cond);
3469
3470       if (err) {
3471          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3472          ret = EGL_FALSE;
3473       }
3474    }
3475
3476    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3477
3478    return ret;
3479 }
3480
3481 static EGLint
3482 dri2_dup_native_fence_fd(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3483 {
3484    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3485    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3486
3487    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3488
3489    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3490       /* try to retrieve the actual native fence fd.. if rendering is
3491        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3492        */
3493       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3494                                                    dri2_sync->fence);
3495    }
3496
3497    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3498       /* if native fence fd still not created, return an error: */
3499       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3500       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3501    }
3502
3503    return os_dupfd_cloexec(sync->SyncFd);
3504 }
3505
3506 static void
3507 dri2_set_blob_cache_funcs(const _EGLDriver *drv, _EGLDisplay *disp,
3508                           EGLSetBlobFuncANDROID set,
3509                           EGLGetBlobFuncANDROID get)
3510 {
3511    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3512    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3513                                    disp->BlobCacheSet,
3514                                    disp->BlobCacheGet);
3515 }
3516
3517 static EGLint
3518 dri2_client_wait_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3519                       EGLint flags, EGLTime timeout)
3520 {
3521    _EGLContext *ctx = _eglGetCurrentContext();
3522    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3523    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3524    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3525    unsigned wait_flags = 0;
3526
3527    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3528
3529    /* The EGL_KHR_fence_sync spec states:
3530     *
3531     *    "If no context is current for the bound API,
3532     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3533     */
3534    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3535       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3536
3537    /* the sync object should take a reference while waiting */
3538    dri2_egl_ref_sync(dri2_sync);
3539
3540    switch (sync->Type) {
3541    case EGL_SYNC_FENCE_KHR:
3542    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3543    case EGL_SYNC_CL_EVENT_KHR:
3544       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3545                                          dri2_sync->fence, wait_flags,
3546                                          timeout))
3547          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3548       else
3549          ret = EGL_TIMEOUT_EXPIRED_KHR;
3550       break;
3551
3552    case EGL_SYNC_REUSABLE_KHR:
3553       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3554           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3555          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3556          dri2_gl_flush();
3557       }
3558
3559       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3560       if (timeout == EGL_FOREVER_KHR) {
3561          mtx_lock(&dri2_sync->mutex);
3562          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3563          mtx_unlock(&dri2_sync->mutex);
3564       } else {
3565          /* if reusable sync has not been yet signaled */
3566          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3567             /* timespecs for cnd_timedwait */
3568             struct timespec current;
3569             struct timespec expire;
3570
3571             /* We override the clock to monotonic when creating the condition
3572              * variable. */
3573             clock_gettime(CLOCK_MONOTONIC, &current);
3574
3575             /* calculating when to expire */
3576             expire.tv_nsec = timeout % 1000000000L;
3577             expire.tv_sec = timeout / 1000000000L;
3578
3579             expire.tv_nsec += current.tv_nsec;
3580             expire.tv_sec += current.tv_sec;
3581
3582             /* expire.nsec now is a number between 0 and 1999999998 */
3583             if (expire.tv_nsec > 999999999L) {
3584                expire.tv_sec++;
3585                expire.tv_nsec -= 1000000000L;
3586             }
3587
3588             mtx_lock(&dri2_sync->mutex);
3589             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3590             mtx_unlock(&dri2_sync->mutex);
3591
3592             if (ret == thrd_busy) {
3593                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3594                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3595                } else {
3596                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3597                   ret = EGL_FALSE;
3598                }
3599             }
3600          }
3601       }
3602       break;
3603   }
3604   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3605
3606   return ret;
3607 }
3608
3609 static EGLBoolean
3610 dri2_signal_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3611                       EGLenum mode)
3612 {
3613    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3614    EGLint ret;
3615
3616    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3617       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3618
3619    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3620       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3621
3622    dri2_sync->base.SyncStatus = mode;
3623
3624    if (mode == EGL_SIGNALED_KHR) {
3625       ret = cnd_broadcast(&dri2_sync->cond);
3626
3627       /* fail to broadcast */
3628       if (ret)
3629          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3630    }
3631
3632    return EGL_TRUE;
3633 }
3634
3635 static EGLint
3636 dri2_server_wait_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3637 {
3638    _EGLContext *ctx = _eglGetCurrentContext();
3639    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3640    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3641    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3642
3643    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3644                                      dri2_sync->fence, 0);
3645    return EGL_TRUE;
3646 }
3647
3648 static int
3649 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3650                                struct mesa_glinterop_device_info *out)
3651 {
3652    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3653    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3654
3655    if (!dri2_dpy->interop)
3656       return MESA_GLINTEROP_UNSUPPORTED;
3657
3658    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3659 }
3660
3661 static int
3662 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3663                            struct mesa_glinterop_export_in *in,
3664                            struct mesa_glinterop_export_out *out)
3665 {
3666    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3667    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3668
3669    if (!dri2_dpy->interop)
3670       return MESA_GLINTEROP_UNSUPPORTED;
3671
3672    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3673 }
3674
3675 const _EGLDriver _eglDriver = {
3676    .Initialize = dri2_initialize,
3677    .Terminate = dri2_terminate,
3678    .CreateContext = dri2_create_context,
3679    .DestroyContext = dri2_destroy_context,
3680    .MakeCurrent = dri2_make_current,
3681    .CreateWindowSurface = dri2_create_window_surface,
3682    .CreatePixmapSurface = dri2_create_pixmap_surface,
3683    .CreatePbufferSurface = dri2_create_pbuffer_surface,
3684    .DestroySurface = dri2_destroy_surface,
3685    .GetProcAddress = dri2_get_proc_address,
3686    .WaitClient = dri2_wait_client,
3687    .WaitNative = dri2_wait_native,
3688    .BindTexImage = dri2_bind_tex_image,
3689    .ReleaseTexImage = dri2_release_tex_image,
3690    .SwapInterval = dri2_swap_interval,
3691    .SwapBuffers = dri2_swap_buffers,
3692    .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
3693    .SwapBuffersRegionNOK = dri2_swap_buffers_region,
3694    .SetDamageRegion = dri2_set_damage_region,
3695    .PostSubBufferNV = dri2_post_sub_buffer,
3696    .CopyBuffers = dri2_copy_buffers,
3697    .QueryBufferAge = dri2_query_buffer_age,
3698    .CreateImageKHR = dri2_create_image,
3699    .DestroyImageKHR = dri2_destroy_image_khr,
3700    .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
3701    .QuerySurface = dri2_query_surface,
3702    .QueryDriverName = dri2_query_driver_name,
3703    .QueryDriverConfig = dri2_query_driver_config,
3704 #ifdef HAVE_LIBDRM
3705    .CreateDRMImageMESA = dri2_create_drm_image_mesa,
3706    .ExportDRMImageMESA = dri2_export_drm_image_mesa,
3707    .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
3708    .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
3709    .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
3710    .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
3711 #endif
3712 #ifdef HAVE_WAYLAND_PLATFORM
3713    .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
3714    .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
3715    .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
3716 #endif
3717    .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
3718    .CreateSyncKHR = dri2_create_sync,
3719    .ClientWaitSyncKHR = dri2_client_wait_sync,
3720    .SignalSyncKHR = dri2_signal_sync,
3721    .WaitSyncKHR = dri2_server_wait_sync,
3722    .DestroySyncKHR = dri2_destroy_sync,
3723    .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
3724    .GLInteropExportObject = dri2_interop_export_object,
3725    .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
3726    .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
3727 };