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/libsync.h"
  66 #include "util/os_file.h"
  67 #include "util/u_atomic.h"
  68 #include "util/u_vector.h"
  69 #include "mapi/glapi/glapi.h"
  70 #include "util/bitscan.h"
  71 #include "util/u_math.h"
  72
  73 #define NUM_ATTRIBS 12
  74
  75 static const struct dri2_pbuffer_visual {
  76    const char *format_name;
  77    unsigned int dri_image_format;
  78    int rgba_shifts[4];
  79    unsigned int rgba_sizes[4];
  80 } dri2_pbuffer_visuals[] = {
  81    {
  82       "ABGR16F",
  83       __DRI_IMAGE_FORMAT_ABGR16161616F,
  84       { 0, 16, 32, 48 },
  85       { 16, 16, 16, 16 }
  86    },
  87    {
  88       "XBGR16F",
  89       __DRI_IMAGE_FORMAT_XBGR16161616F,
  90       { 0, 16, 32, -1 },
  91       { 16, 16, 16, 0 }
  92    },
  93    {
  94       "A2RGB10",
  95       __DRI_IMAGE_FORMAT_ARGB2101010,
  96       { 20, 10, 0, 30 },
  97       { 10, 10, 10, 2 }
  98    },
  99    {
 100       "X2RGB10",
 101       __DRI_IMAGE_FORMAT_XRGB2101010,
 102       { 20, 10, 0, -1 },
 103       { 10, 10, 10, 0 }
 104    },
 105    {
 106       "ARGB8888",
 107       __DRI_IMAGE_FORMAT_ARGB8888,
 108       { 16, 8, 0, 24 },
 109       { 8, 8, 8, 8 }
 110    },
 111    {
 112       "RGB888",
 113       __DRI_IMAGE_FORMAT_XRGB8888,
 114       { 16, 8, 0, -1 },
 115       { 8, 8, 8, 0 }
 116    },
 117    {
 118       "RGB565",
 119       __DRI_IMAGE_FORMAT_RGB565,
 120       { 11, 5, 0, -1 },
 121       { 5, 6, 5, 0 }
 122    },
 123 };
 124
 125 static void
 126 dri_set_background_context(void *loaderPrivate)
 127 {
 128    _EGLContext *ctx = _eglGetCurrentContext();
 129    _EGLThreadInfo *t = _eglGetCurrentThread();
 130
 131    _eglBindContextToThread(ctx, t);
 132 }
 133
 134 static void
 135 dri2_gl_flush()
 136 {
 137    static void (*glFlush)(void);
 138    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 139
 140    mtx_lock(&glFlushMutex);
 141    if (!glFlush)
 142       glFlush = _glapi_get_proc_address("glFlush");
 143    mtx_unlock(&glFlushMutex);
 144
 145    /* if glFlush is not available things are horribly broken */
 146    if (!glFlush) {
 147       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 148       return;
 149    }
 150
 151    glFlush();
 152 }
 153
 154 static GLboolean
 155 dri_is_thread_safe(void *loaderPrivate)
 156 {
 157    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 158    UNUSED _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 159
 160 #ifdef HAVE_X11_PLATFORM
 161    Display *xdpy = (Display*)display->PlatformDisplay;
 162
 163    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 164     * platform
 165     *
 166     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 167     * It wll be NULL if XInitThreads wasn't called.
 168     */
 169    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 170       return false;
 171 #endif
 172
 173    return true;
 174 }
 175
 176 const __DRIbackgroundCallableExtension background_callable_extension = {
 177    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 178
 179    .setBackgroundContext = dri_set_background_context,
 180    .isThreadSafe         = dri_is_thread_safe,
 181 };
 182
 183 const __DRIuseInvalidateExtension use_invalidate = {
 184    .base = { __DRI_USE_INVALIDATE, 1 }
 185 };
 186
 187 static void
 188 dri2_get_pbuffer_drawable_info(__DRIdrawable * draw,
 189                                int *x, int *y, int *w, int *h,
 190                                void *loaderPrivate)
 191 {
 192    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 193
 194    *x = *y = 0;
 195    *w = dri2_surf->base.Width;
 196    *h = dri2_surf->base.Height;
 197 }
 198
 199 static int
 200 dri2_get_bytes_per_pixel(struct dri2_egl_surface *dri2_surf)
 201 {
 202    const int depth = dri2_surf->base.Config->BufferSize;
 203    return depth ? util_next_power_of_two(depth / 8) : 0;
 204 }
 205
 206 static void
 207 dri2_put_image(__DRIdrawable * draw, int op,
 208                int x, int y, int w, int h,
 209                char *data, void *loaderPrivate)
 210 {
 211    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 212    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 213    const int width = dri2_surf->base.Width;
 214    const int height = dri2_surf->base.Height;
 215    const int dst_stride = width*bpp;
 216    const int src_stride = w*bpp;
 217    const int x_offset = x*bpp;
 218    int copy_width = src_stride;
 219
 220    if (!dri2_surf->swrast_device_buffer)
 221       dri2_surf->swrast_device_buffer = malloc(height*dst_stride);
 222
 223    if (dri2_surf->swrast_device_buffer) {
 224       const char *src = data;
 225       char *dst = dri2_surf->swrast_device_buffer;
 226
 227       dst += x_offset;
 228       dst += y*dst_stride;
 229
 230       /* Drivers are allowed to submit OOB PutImage requests, so clip here. */
 231       if (copy_width > dst_stride - x_offset)
 232          copy_width = dst_stride - x_offset;
 233       if (h > height - y)
 234          h = height - y;
 235
 236       for (; 0 < h; --h) {
 237          memcpy(dst, src, copy_width);
 238          dst += dst_stride;
 239          src += src_stride;
 240       }
 241    }
 242 }
 243
 244 static void
 245 dri2_get_image(__DRIdrawable * read,
 246                int x, int y, int w, int h,
 247                char *data, void *loaderPrivate)
 248 {
 249    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 250    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 251    const int width = dri2_surf->base.Width;
 252    const int height = dri2_surf->base.Height;
 253    const int src_stride = width*bpp;
 254    const int dst_stride = w*bpp;
 255    const int x_offset = x*bpp;
 256    int copy_width = dst_stride;
 257    const char *src = dri2_surf->swrast_device_buffer;
 258    char *dst = data;
 259
 260    if (!src) {
 261       memset(data, 0, copy_width * h);
 262       return;
 263    }
 264
 265    src += x_offset;
 266    src += y*src_stride;
 267
 268    /* Drivers are allowed to submit OOB GetImage requests, so clip here. */
 269    if (copy_width > src_stride - x_offset)
 270       copy_width = src_stride - x_offset;
 271    if (h > height - y)
 272       h = height - y;
 273
 274    for (; 0 < h; --h) {
 275       memcpy(dst, src, copy_width);
 276       src += src_stride;
 277       dst += dst_stride;
 278    }
 279
 280 }
 281
 282 /* HACK: technically we should have swrast_null, instead of these.
 283  */
 284 const __DRIswrastLoaderExtension swrast_pbuffer_loader_extension = {
 285    .base            = { __DRI_SWRAST_LOADER, 1 },
 286    .getDrawableInfo = dri2_get_pbuffer_drawable_info,
 287    .putImage        = dri2_put_image,
 288    .getImage        = dri2_get_image,
 289 };
 290
 291 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 292    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 293    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 294    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 295    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 296    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 297    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 298    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 299    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 300    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 301    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 302    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 303    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 304    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 305 };
 306
 307 const __DRIconfig *
 308 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 309                     EGLenum colorspace)
 310 {
 311    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 312    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 313
 314    return conf->dri_config[double_buffer][srgb];
 315 }
 316
 317 static EGLBoolean
 318 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 319 {
 320    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 321       return EGL_FALSE;
 322
 323    if (!_eglMatchConfig(conf, criteria))
 324       return EGL_FALSE;
 325
 326    return EGL_TRUE;
 327 }
 328
 329 void
 330 dri2_get_shifts_and_sizes(const __DRIcoreExtension *core,
 331                           const __DRIconfig *config, int *shifts,
 332                           unsigned int *sizes)
 333 {
 334    unsigned int mask;
 335
 336    if (core->getConfigAttrib(config, __DRI_ATTRIB_RED_SHIFT, (unsigned int *)&shifts[0])) {
 337       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SHIFT, (unsigned int *)&shifts[1]);
 338       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SHIFT, (unsigned int *)&shifts[2]);
 339       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SHIFT, (unsigned int *)&shifts[3]);
 340    } else {
 341       /* Driver isn't exposing shifts, so convert masks to shifts */
 342       core->getConfigAttrib(config, __DRI_ATTRIB_RED_MASK, &mask);
 343       shifts[0] = ffs(mask) - 1;
 344       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_MASK, &mask);
 345       shifts[1] = ffs(mask) - 1;
 346       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_MASK, &mask);
 347       shifts[2] = ffs(mask) - 1;
 348       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_MASK, &mask);
 349       shifts[3] = ffs(mask) - 1;
 350    }
 351
 352    core->getConfigAttrib(config, __DRI_ATTRIB_RED_SIZE, &sizes[0]);
 353    core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SIZE, &sizes[1]);
 354    core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SIZE, &sizes[2]);
 355    core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SIZE, &sizes[3]);
 356 }
 357
 358 void
 359 dri2_get_render_type_float(const __DRIcoreExtension *core,
 360                            const __DRIconfig *config,
 361                            bool *is_float)
 362 {
 363    unsigned int render_type;
 364
 365    core->getConfigAttrib(config, __DRI_ATTRIB_RENDER_TYPE, &render_type);
 366    *is_float = (render_type & __DRI_ATTRIB_FLOAT_BIT) ? true : false;
 367 }
 368
 369 unsigned int
 370 dri2_image_format_for_pbuffer_config(struct dri2_egl_display *dri2_dpy,
 371                                      const __DRIconfig *config)
 372 {
 373    int shifts[4];
 374    unsigned int sizes[4];
 375
 376    dri2_get_shifts_and_sizes(dri2_dpy->core, config, shifts, sizes);
 377
 378    for (unsigned i = 0; i < ARRAY_SIZE(dri2_pbuffer_visuals); ++i) {
 379       const struct dri2_pbuffer_visual *visual = &dri2_pbuffer_visuals[i];
 380
 381       if (shifts[0] == visual->rgba_shifts[0] &&
 382           shifts[1] == visual->rgba_shifts[1] &&
 383           shifts[2] == visual->rgba_shifts[2] &&
 384           shifts[3] == visual->rgba_shifts[3] &&
 385           sizes[0] == visual->rgba_sizes[0] &&
 386           sizes[1] == visual->rgba_sizes[1] &&
 387           sizes[2] == visual->rgba_sizes[2] &&
 388           sizes[3] == visual->rgba_sizes[3]) {
 389          return visual->dri_image_format;
 390       }
 391    }
 392
 393    return __DRI_IMAGE_FORMAT_NONE;
 394 }
 395
 396 struct dri2_egl_config *
 397 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 398                 EGLint surface_type, const EGLint *attr_list,
 399                 const int *rgba_shifts, const unsigned int *rgba_sizes)
 400 {
 401    struct dri2_egl_config *conf;
 402    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 403    _EGLConfig base;
 404    unsigned int attrib, value, double_buffer;
 405    bool srgb = false;
 406    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 407    int dri_shifts[4] = { -1, -1, -1, -1 };
 408    unsigned int dri_sizes[4] = { 0, 0, 0, 0 };
 409    _EGLConfig *matching_config;
 410    EGLint num_configs = 0;
 411    EGLint config_id;
 412
 413    _eglInitConfig(&base, disp, id);
 414
 415    double_buffer = 0;
 416    bind_to_texture_rgb = 0;
 417    bind_to_texture_rgba = 0;
 418
 419    for (int i = 0; i < __DRI_ATTRIB_MAX; ++i) {
 420       if (!dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib, &value))
 421          break;
 422
 423       switch (attrib) {
 424       case __DRI_ATTRIB_RENDER_TYPE:
 425          if (value & __DRI_ATTRIB_FLOAT_BIT)
 426             base.ComponentType = EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT;
 427          if (value & __DRI_ATTRIB_RGBA_BIT)
 428             value = EGL_RGB_BUFFER;
 429          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 430             value = EGL_LUMINANCE_BUFFER;
 431          else
 432             return NULL;
 433          base.ColorBufferType = value;
 434          break;
 435
 436       case __DRI_ATTRIB_CONFIG_CAVEAT:
 437          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 438             value = EGL_NON_CONFORMANT_CONFIG;
 439          else if (value & __DRI_ATTRIB_SLOW_BIT)
 440             value = EGL_SLOW_CONFIG;
 441          else
 442             value = EGL_NONE;
 443          base.ConfigCaveat = value;
 444          break;
 445
 446       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 447          bind_to_texture_rgb = value;
 448          break;
 449
 450       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 451          bind_to_texture_rgba = value;
 452          break;
 453
 454       case __DRI_ATTRIB_DOUBLE_BUFFER:
 455          double_buffer = value;
 456          break;
 457
 458       case __DRI_ATTRIB_RED_SIZE:
 459          dri_sizes[0] = value;
 460          base.RedSize = value;
 461          break;
 462
 463       case __DRI_ATTRIB_RED_MASK:
 464          dri_shifts[0] = ffs(value) - 1;
 465          break;
 466
 467       case __DRI_ATTRIB_RED_SHIFT:
 468          dri_shifts[0] = value;
 469          break;
 470
 471       case __DRI_ATTRIB_GREEN_SIZE:
 472          dri_sizes[1] = value;
 473          base.GreenSize = value;
 474          break;
 475
 476       case __DRI_ATTRIB_GREEN_MASK:
 477          dri_shifts[1] = ffs(value) - 1;
 478          break;
 479
 480       case __DRI_ATTRIB_GREEN_SHIFT:
 481          dri_shifts[1] = value;
 482          break;
 483
 484       case __DRI_ATTRIB_BLUE_SIZE:
 485          dri_sizes[2] = value;
 486          base.BlueSize = value;
 487          break;
 488
 489       case __DRI_ATTRIB_BLUE_MASK:
 490          dri_shifts[2] = ffs(value) - 1;
 491          break;
 492
 493       case __DRI_ATTRIB_BLUE_SHIFT:
 494          dri_shifts[2] = value;
 495          break;
 496
 497      case __DRI_ATTRIB_ALPHA_SIZE:
 498          dri_sizes[3] = value;
 499          base.AlphaSize = value;
 500          break;
 501
 502       case __DRI_ATTRIB_ALPHA_MASK:
 503          dri_shifts[3] = ffs(value) - 1;
 504          break;
 505
 506       case __DRI_ATTRIB_ALPHA_SHIFT:
 507          dri_shifts[3] = value;
 508          break;
 509
 510       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 511       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 512       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 513       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 514          /* Don't expose visuals with the accumulation buffer. */
 515          if (value > 0)
 516             return NULL;
 517          break;
 518
 519       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 520          srgb = value != 0;
 521          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 522             return NULL;
 523          break;
 524
 525       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 526          base.MaxPbufferWidth = _EGL_MAX_PBUFFER_WIDTH;
 527          break;
 528       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 529          base.MaxPbufferHeight = _EGL_MAX_PBUFFER_HEIGHT;
 530          break;
 531       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
 532          if (disp->Extensions.KHR_mutable_render_buffer)
 533             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
 534          break;
 535       default:
 536          key = dri2_to_egl_attribute_map[attrib];
 537          if (key != 0)
 538             _eglSetConfigKey(&base, key, value);
 539          break;
 540       }
 541    }
 542
 543    if (attr_list)
 544       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 545          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 546
 547    if (rgba_shifts && memcmp(rgba_shifts, dri_shifts, sizeof(dri_shifts)))
 548       return NULL;
 549
 550    if (rgba_sizes && memcmp(rgba_sizes, dri_sizes, sizeof(dri_sizes)))
 551       return NULL;
 552
 553    base.NativeRenderable = EGL_TRUE;
 554
 555    base.SurfaceType = surface_type;
 556    if (surface_type & (EGL_PBUFFER_BIT |
 557        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 558       base.BindToTextureRGB = bind_to_texture_rgb;
 559       if (base.AlphaSize > 0)
 560          base.BindToTextureRGBA = bind_to_texture_rgba;
 561    }
 562
 563    if (double_buffer) {
 564       surface_type &= ~EGL_PIXMAP_BIT;
 565    }
 566
 567    if (!surface_type)
 568       return NULL;
 569
 570    base.RenderableType = disp->ClientAPIs;
 571    base.Conformant = disp->ClientAPIs;
 572
 573    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 574    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 575
 576    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 577       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 578       return NULL;
 579    }
 580
 581    config_id = base.ConfigID;
 582    base.ConfigID    = EGL_DONT_CARE;
 583    base.SurfaceType = EGL_DONT_CARE;
 584    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 585                                  (_EGLArrayForEach) dri2_match_config, &base);
 586
 587    if (num_configs == 1) {
 588       conf = (struct dri2_egl_config *) matching_config;
 589
 590       if (!conf->dri_config[double_buffer][srgb])
 591          conf->dri_config[double_buffer][srgb] = dri_config;
 592       else
 593          /* a similar config type is already added (unlikely) => discard */
 594          return NULL;
 595    }
 596    else if (num_configs == 0) {
 597       conf = calloc(1, sizeof *conf);
 598       if (conf == NULL)
 599          return NULL;
 600
 601       conf->dri_config[double_buffer][srgb] = dri_config;
 602
 603       memcpy(&conf->base, &base, sizeof base);
 604       conf->base.SurfaceType = 0;
 605       conf->base.ConfigID = config_id;
 606
 607       _eglLinkConfig(&conf->base);
 608    }
 609    else {
 610       unreachable("duplicates should not be possible");
 611       return NULL;
 612    }
 613
 614    conf->base.SurfaceType |= surface_type;
 615
 616    return conf;
 617 }
 618
 619 EGLBoolean
 620 dri2_add_pbuffer_configs_for_visuals(_EGLDisplay *disp)
 621 {
 622    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 623    unsigned int format_count[ARRAY_SIZE(dri2_pbuffer_visuals)] = { 0 };
 624    unsigned int config_count = 0;
 625
 626    for (unsigned i = 0; dri2_dpy->driver_configs[i] != NULL; i++) {
 627       for (unsigned j = 0; j < ARRAY_SIZE(dri2_pbuffer_visuals); j++) {
 628          struct dri2_egl_config *dri2_conf;
 629
 630          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
 631                config_count + 1, EGL_PBUFFER_BIT, NULL,
 632                dri2_pbuffer_visuals[j].rgba_shifts, dri2_pbuffer_visuals[j].rgba_sizes);
 633
 634          if (dri2_conf) {
 635             if (dri2_conf->base.ConfigID == config_count + 1)
 636                config_count++;
 637             format_count[j]++;
 638          }
 639       }
 640    }
 641
 642    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
 643       if (!format_count[i]) {
 644          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
 645                dri2_pbuffer_visuals[i].format_name);
 646       }
 647    }
 648
 649    return (config_count != 0);
 650 }
 651
 652 GLboolean
 653 dri2_validate_egl_image(void *image, void *data)
 654 {
 655    _EGLDisplay *disp = data;
 656    _EGLImage *img;
 657
 658    mtx_lock(&disp->Mutex);
 659    img = _eglLookupImage(image, disp);
 660    mtx_unlock(&disp->Mutex);
 661
 662    if (img == NULL) {
 663       _eglError(EGL_BAD_PARAMETER, "dri2_validate_egl_image");
 664       return false;
 665    }
 666
 667    return true;
 668 }
 669
 670 __DRIimage *
 671 dri2_lookup_egl_image_validated(void *image, void *data)
 672 {
 673    struct dri2_egl_image *dri2_img;
 674
 675    (void)data;
 676
 677    dri2_img = dri2_egl_image(image);
 678
 679    return dri2_img->dri_image;
 680 }
 681
 682 __DRIimage *
 683 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 684 {
 685    (void) screen;
 686
 687    if (!dri2_validate_egl_image(image, data))
 688       return NULL;
 689
 690    return dri2_lookup_egl_image_validated(image, data);
 691 }
 692
 693 const __DRIimageLookupExtension image_lookup_extension = {
 694    .base = { __DRI_IMAGE_LOOKUP, 2 },
 695
 696    .lookupEGLImage       = dri2_lookup_egl_image,
 697    .validateEGLImage     = dri2_validate_egl_image,
 698    .lookupEGLImageValidated = dri2_lookup_egl_image_validated,
 699 };
 700
 701 struct dri2_extension_match {
 702    const char *name;
 703    int version;
 704    int offset;
 705 };
 706
 707 static const struct dri2_extension_match dri3_driver_extensions[] = {
 708    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 709    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 710    { NULL, 0, 0 }
 711 };
 712
 713 static const struct dri2_extension_match dri2_driver_extensions[] = {
 714    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 715    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 716    { NULL, 0, 0 }
 717 };
 718
 719 static const struct dri2_extension_match dri2_core_extensions[] = {
 720    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 721    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 722    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 723    { NULL, 0, 0 }
 724 };
 725
 726 static const struct dri2_extension_match swrast_driver_extensions[] = {
 727    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 728    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 729    { NULL, 0, 0 }
 730 };
 731
 732 static const struct dri2_extension_match swrast_core_extensions[] = {
 733    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 734    { NULL, 0, 0 }
 735 };
 736
 737 static const struct dri2_extension_match optional_driver_extensions[] = {
 738    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
 739    { NULL, 0, 0 }
 740 };
 741
 742 static const struct dri2_extension_match optional_core_extensions[] = {
 743    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 744    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 745    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 746    { __DRI2_BUFFER_DAMAGE, 1, offsetof(struct dri2_egl_display, buffer_damage) },
 747    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 748    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 749    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 750    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 751    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 752    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 753    { NULL, 0, 0 }
 754 };
 755
 756 static EGLBoolean
 757 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 758                      const struct dri2_extension_match *matches,
 759                      const __DRIextension **extensions,
 760                      bool optional)
 761 {
 762    int ret = EGL_TRUE;
 763    void *field;
 764
 765    for (int i = 0; extensions[i]; i++) {
 766       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 767       for (int j = 0; matches[j].name; j++) {
 768          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 769              extensions[i]->version >= matches[j].version) {
 770             field = ((char *) dri2_dpy + matches[j].offset);
 771             *(const __DRIextension **) field = extensions[i];
 772             _eglLog(_EGL_INFO, "found extension %s version %d",
 773                     extensions[i]->name, extensions[i]->version);
 774             break;
 775          }
 776       }
 777    }
 778
 779    for (int j = 0; matches[j].name; j++) {
 780       field = ((char *) dri2_dpy + matches[j].offset);
 781       if (*(const __DRIextension **) field == NULL) {
 782          if (optional) {
 783             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 784                     matches[j].name, matches[j].version);
 785          } else {
 786             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 787                     matches[j].name, matches[j].version);
 788             ret = EGL_FALSE;
 789          }
 790       }
 791    }
 792
 793    return ret;
 794 }
 795
 796 static const __DRIextension **
 797 dri2_open_driver(_EGLDisplay *disp)
 798 {
 799    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 800    static const char *search_path_vars[] = {
 801       "LIBGL_DRIVERS_PATH",
 802       NULL,
 803    };
 804
 805    return loader_open_driver(dri2_dpy->driver_name,
 806                              &dri2_dpy->driver,
 807                              search_path_vars);
 808 }
 809
 810 static EGLBoolean
 811 dri2_load_driver_common(_EGLDisplay *disp,
 812                         const struct dri2_extension_match *driver_extensions)
 813 {
 814    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 815    const __DRIextension **extensions;
 816
 817    extensions = dri2_open_driver(disp);
 818    if (!extensions)
 819       return EGL_FALSE;
 820
 821    if (!dri2_bind_extensions(dri2_dpy, driver_extensions, extensions, false)) {
 822       dlclose(dri2_dpy->driver);
 823       dri2_dpy->driver = NULL;
 824       return EGL_FALSE;
 825    }
 826    dri2_dpy->driver_extensions = extensions;
 827
 828    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 829
 830    return EGL_TRUE;
 831 }
 832
 833 EGLBoolean
 834 dri2_load_driver(_EGLDisplay *disp)
 835 {
 836    return dri2_load_driver_common(disp, dri2_driver_extensions);
 837 }
 838
 839 EGLBoolean
 840 dri2_load_driver_dri3(_EGLDisplay *disp)
 841 {
 842    return dri2_load_driver_common(disp, dri3_driver_extensions);
 843 }
 844
 845 EGLBoolean
 846 dri2_load_driver_swrast(_EGLDisplay *disp)
 847 {
 848    return dri2_load_driver_common(disp, swrast_driver_extensions);
 849 }
 850
 851 static unsigned
 852 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 853 {
 854    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 855    unsigned int value = 0;
 856
 857    if (!rendererQuery ||
 858        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 859       return 0;
 860
 861    return value;
 862 }
 863
 864 static const char *
 865 dri2_query_driver_name(_EGLDisplay *disp)
 866 {
 867     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 868     return dri2_dpy->driver_name;
 869 }
 870
 871 static char *
 872 dri2_query_driver_config(_EGLDisplay *disp)
 873 {
 874     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 875     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
 876
 877     if (ext->base.version >= 2)
 878         return ext->getXml(dri2_dpy->driver_name);
 879
 880     return strdup(ext->xml);
 881 }
 882
 883
 884 void
 885 dri2_setup_screen(_EGLDisplay *disp)
 886 {
 887    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 888    unsigned int api_mask;
 889
 890    /*
 891     * EGL 1.5 specification defines the default value to 1. Moreover,
 892     * eglSwapInterval() is required to clamp requested value to the supported
 893     * range. Since the default value is implicitly assumed to be supported,
 894     * use it as both minimum and maximum for the platforms that do not allow
 895     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 896     * override these values already.
 897     */
 898    dri2_dpy->min_swap_interval = 1;
 899    dri2_dpy->max_swap_interval = 1;
 900    dri2_dpy->default_swap_interval = 1;
 901
 902    if (dri2_dpy->image_driver) {
 903       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 904    } else if (dri2_dpy->dri2) {
 905       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 906    } else {
 907       assert(dri2_dpy->swrast);
 908       api_mask = 1 << __DRI_API_OPENGL |
 909                  1 << __DRI_API_GLES |
 910                  1 << __DRI_API_GLES2 |
 911                  1 << __DRI_API_GLES3;
 912    }
 913
 914    disp->ClientAPIs = 0;
 915    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 916       disp->ClientAPIs |= EGL_OPENGL_BIT;
 917    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 918       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 919    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 920       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 921    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 922       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 923
 924    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 925    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 926    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 927
 928    if (dri2_dpy->configOptions) {
 929        disp->Extensions.MESA_query_driver = EGL_TRUE;
 930    }
 931
 932    /* Report back to EGL the bitmask of priorities supported */
 933    disp->Extensions.IMG_context_priority =
 934       dri2_renderer_query_integer(dri2_dpy,
 935                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 936
 937    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 938
 939    if (dri2_renderer_query_integer(dri2_dpy,
 940                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 941       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 942
 943    if (dri2_dpy->image_driver ||
 944        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 945        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 946       disp->Extensions.KHR_create_context = EGL_TRUE;
 947
 948       if (dri2_dpy->robustness)
 949          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 950    }
 951
 952    if (dri2_renderer_query_integer(dri2_dpy,
 953                                    __DRI2_RENDERER_HAS_NO_ERROR_CONTEXT))
 954       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 955
 956    if (dri2_dpy->fence) {
 957       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 958       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 959       if (dri2_dpy->fence->get_fence_from_cl_event)
 960          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 961       if (dri2_dpy->fence->base.version >= 2 &&
 962           dri2_dpy->fence->get_capabilities) {
 963          unsigned capabilities =
 964             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 965          disp->Extensions.ANDROID_native_fence_sync =
 966             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 967       }
 968    }
 969
 970    if (dri2_dpy->blob)
 971       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 972
 973    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 974
 975    if (dri2_dpy->image) {
 976       if (dri2_dpy->image->base.version >= 10 &&
 977           dri2_dpy->image->getCapabilities != NULL) {
 978          int capabilities;
 979
 980          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 981          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 982
 983          if (dri2_dpy->image->base.version >= 11)
 984             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 985       } else {
 986          disp->Extensions.MESA_drm_image = EGL_TRUE;
 987          if (dri2_dpy->image->base.version >= 11)
 988             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 989       }
 990
 991       disp->Extensions.KHR_image_base = EGL_TRUE;
 992       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 993       if (dri2_dpy->image->base.version >= 5 &&
 994           dri2_dpy->image->createImageFromTexture) {
 995          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 996          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 997
 998          if (dri2_renderer_query_integer(dri2_dpy,
 999                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
1000              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
1001       }
1002 #ifdef HAVE_LIBDRM
1003       if (dri2_dpy->image->base.version >= 8 &&
1004           dri2_dpy->image->createImageFromDmaBufs) {
1005          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
1006          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
1007       }
1008 #endif
1009    }
1010
1011    if (dri2_dpy->flush_control)
1012       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
1013
1014    if (dri2_dpy->buffer_damage && dri2_dpy->buffer_damage->set_damage_region)
1015       disp->Extensions.KHR_partial_update = EGL_TRUE;
1016
1017    disp->Extensions.EXT_protected_surface =
1018       dri2_renderer_query_integer(dri2_dpy,
1019                                   __DRI2_RENDERER_HAS_PROTECTED_CONTENT);
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    case _EGL_PLATFORM_XCB:
1178       ret = dri2_initialize_x11(disp);
1179       break;
1180    case _EGL_PLATFORM_DRM:
1181       ret = dri2_initialize_drm(disp);
1182       break;
1183    case _EGL_PLATFORM_WAYLAND:
1184       ret = dri2_initialize_wayland(disp);
1185       break;
1186    case _EGL_PLATFORM_ANDROID:
1187       ret = dri2_initialize_android(disp);
1188       break;
1189    default:
1190       unreachable("Callers ensure we cannot get here.");
1191       return EGL_FALSE;
1192    }
1193
1194    if (!ret)
1195       return EGL_FALSE;
1196
1197    dri2_dpy = dri2_egl_display(disp);
1198    dri2_dpy->ref_count++;
1199
1200    return EGL_TRUE;
1201 }
1202
1203 /**
1204  * Decrement display reference count, and free up display if necessary.
1205  */
1206 static void
1207 dri2_display_release(_EGLDisplay *disp)
1208 {
1209    struct dri2_egl_display *dri2_dpy;
1210
1211    if (!disp)
1212       return;
1213
1214    dri2_dpy = dri2_egl_display(disp);
1215
1216    assert(dri2_dpy->ref_count > 0);
1217    dri2_dpy->ref_count--;
1218
1219    if (dri2_dpy->ref_count > 0)
1220       return;
1221
1222    _eglCleanupDisplay(disp);
1223    dri2_display_destroy(disp);
1224 }
1225
1226 void
1227 dri2_display_destroy(_EGLDisplay *disp)
1228 {
1229    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1230
1231    if (dri2_dpy->own_dri_screen) {
1232       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
1233          dri2_dpy->vtbl->close_screen_notify(disp);
1234       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1235    }
1236    if (dri2_dpy->fd >= 0)
1237       close(dri2_dpy->fd);
1238
1239    /* Don't dlclose the driver when building with the address sanitizer, so you
1240     * get good symbols from the leak reports.
1241     */
1242 #if !BUILT_WITH_ASAN || defined(NDEBUG)
1243    if (dri2_dpy->driver)
1244       dlclose(dri2_dpy->driver);
1245 #endif
1246
1247    free(dri2_dpy->driver_name);
1248
1249 #ifdef HAVE_WAYLAND_PLATFORM
1250    free(dri2_dpy->device_name);
1251 #endif
1252
1253    switch (disp->Platform) {
1254    case _EGL_PLATFORM_X11:
1255       dri2_teardown_x11(dri2_dpy);
1256       break;
1257    case _EGL_PLATFORM_DRM:
1258       dri2_teardown_drm(dri2_dpy);
1259       break;
1260    case _EGL_PLATFORM_WAYLAND:
1261       dri2_teardown_wayland(dri2_dpy);
1262       break;
1263    default:
1264       /* TODO: add teardown for other platforms */
1265       break;
1266    }
1267
1268    /* The drm platform does not create the screen/driver_configs but reuses
1269     * the ones from the gbm device. As such the gbm itself is responsible
1270     * for the cleanup.
1271     */
1272    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1273       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1274          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1275       free(dri2_dpy->driver_configs);
1276    }
1277    free(dri2_dpy);
1278    disp->DriverData = NULL;
1279 }
1280
1281 __DRIbuffer *
1282 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1283                                     unsigned int att, unsigned int format)
1284 {
1285    struct dri2_egl_display *dri2_dpy =
1286       dri2_egl_display(dri2_surf->base.Resource.Display);
1287
1288    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1289       return NULL;
1290
1291    if (!dri2_surf->local_buffers[att]) {
1292       dri2_surf->local_buffers[att] =
1293          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1294                                         dri2_surf->base.Width, dri2_surf->base.Height);
1295    }
1296
1297    return dri2_surf->local_buffers[att];
1298 }
1299
1300 void
1301 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1302 {
1303    struct dri2_egl_display *dri2_dpy =
1304       dri2_egl_display(dri2_surf->base.Resource.Display);
1305
1306    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1307       if (dri2_surf->local_buffers[i]) {
1308          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1309                                        dri2_surf->local_buffers[i]);
1310          dri2_surf->local_buffers[i] = NULL;
1311       }
1312    }
1313 }
1314
1315 /**
1316  * Called via eglTerminate(), drv->Terminate().
1317  *
1318  * This must be guaranteed to be called exactly once, even if eglTerminate is
1319  * called many times (without a eglInitialize in between).
1320  */
1321 static EGLBoolean
1322 dri2_terminate(_EGLDisplay *disp)
1323 {
1324    /* Release all non-current Context/Surfaces. */
1325    _eglReleaseDisplayResources(disp);
1326
1327    dri2_display_release(disp);
1328
1329    return EGL_TRUE;
1330 }
1331
1332 /**
1333  * Set the error code after a call to
1334  * dri2_egl_display::dri2::createContextAttribs.
1335  */
1336 static void
1337 dri2_create_context_attribs_error(int dri_error)
1338 {
1339    EGLint egl_error;
1340
1341    switch (dri_error) {
1342    case __DRI_CTX_ERROR_SUCCESS:
1343       return;
1344
1345    case __DRI_CTX_ERROR_NO_MEMORY:
1346       egl_error = EGL_BAD_ALLOC;
1347       break;
1348
1349   /* From the EGL_KHR_create_context spec, section "Errors":
1350    *
1351    *   * If <config> does not support a client API context compatible
1352    *     with the requested API major and minor version, [...] context flags,
1353    *     and context reset notification behavior (for client API types where
1354    *     these attributes are supported), then an EGL_BAD_MATCH error is
1355    *     generated.
1356    *
1357    *   * If an OpenGL ES context is requested and the values for
1358    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1359    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1360    *     is not defined, than an EGL_BAD_MATCH error is generated.
1361    *
1362    *   * If an OpenGL context is requested, the requested version is
1363    *     greater than 3.2, and the value for attribute
1364    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1365    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1366    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1367    *     one of these bits set; or if the implementation does not support
1368    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1369    */
1370    case __DRI_CTX_ERROR_BAD_API:
1371    case __DRI_CTX_ERROR_BAD_VERSION:
1372    case __DRI_CTX_ERROR_BAD_FLAG:
1373       egl_error = EGL_BAD_MATCH;
1374       break;
1375
1376   /* From the EGL_KHR_create_context spec, section "Errors":
1377    *
1378    *   * If an attribute name or attribute value in <attrib_list> is not
1379    *     recognized (including unrecognized bits in bitmask attributes),
1380    *     then an EGL_BAD_ATTRIBUTE error is generated."
1381    */
1382    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1383    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1384       egl_error = EGL_BAD_ATTRIBUTE;
1385       break;
1386
1387    default:
1388       assert(!"unknown dri_error code");
1389       egl_error = EGL_BAD_MATCH;
1390       break;
1391    }
1392
1393    _eglError(egl_error, "dri2_create_context");
1394 }
1395
1396 static bool
1397 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1398                           struct dri2_egl_display *dri2_dpy,
1399                           uint32_t *ctx_attribs,
1400                           unsigned *num_attribs)
1401 {
1402    int pos = 0;
1403
1404    assert(*num_attribs >= NUM_ATTRIBS);
1405
1406    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1407    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1408    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1409    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1410
1411    if (dri2_ctx->base.Flags != 0) {
1412       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1413        * extension, don't even try to send it the robust-access flag.
1414        * It may explode.  Instead, generate the required EGL error here.
1415        */
1416       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1417             && !dri2_dpy->robustness) {
1418          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1419          return false;
1420       }
1421
1422       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1423       ctx_attribs[pos++] = dri2_ctx->base.Flags;
1424    }
1425
1426    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1427       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1428        * extension, don't even try to send it a reset strategy.  It may
1429        * explode.  Instead, generate the required EGL error here.
1430        */
1431       if (!dri2_dpy->robustness) {
1432          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1433          return false;
1434       }
1435
1436       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1437       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1438    }
1439
1440    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1441       unsigned val;
1442
1443       switch (dri2_ctx->base.ContextPriority) {
1444       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1445          val = __DRI_CTX_PRIORITY_HIGH;
1446          break;
1447       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1448          val = __DRI_CTX_PRIORITY_MEDIUM;
1449          break;
1450       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1451          val = __DRI_CTX_PRIORITY_LOW;
1452          break;
1453       default:
1454          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1455          return false;
1456       }
1457
1458       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1459       ctx_attribs[pos++] = val;
1460    }
1461
1462    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1463       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1464       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1465    }
1466
1467    if (dri2_ctx->base.NoError) {
1468       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_NO_ERROR;
1469       ctx_attribs[pos++] = true;
1470    }
1471
1472    *num_attribs = pos;
1473
1474    return true;
1475 }
1476
1477 /**
1478  * Called via eglCreateContext(), drv->CreateContext().
1479  */
1480 static _EGLContext *
1481 dri2_create_context(_EGLDisplay *disp, _EGLConfig *conf,
1482                     _EGLContext *share_list, const EGLint *attrib_list)
1483 {
1484    struct dri2_egl_context *dri2_ctx;
1485    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1486    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1487    __DRIcontext *shared =
1488       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1489    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1490    const __DRIconfig *dri_config;
1491    int api;
1492    unsigned error;
1493    unsigned num_attribs = NUM_ATTRIBS;
1494    uint32_t ctx_attribs[NUM_ATTRIBS];
1495
1496    dri2_ctx = malloc(sizeof *dri2_ctx);
1497    if (!dri2_ctx) {
1498       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1499       return NULL;
1500    }
1501
1502    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1503       goto cleanup;
1504
1505    /* The EGL_EXT_create_context_robustness spec says:
1506     *
1507     *    "Add to the eglCreateContext context creation errors: [...]
1508     *
1509     *     * If the reset notification behavior of <share_context> and the
1510     *       newly created context are different then an EGL_BAD_MATCH error is
1511     *       generated."
1512     */
1513    if (share_list && share_list->ResetNotificationStrategy !=
1514                      dri2_ctx->base.ResetNotificationStrategy) {
1515       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1516       goto cleanup;
1517    }
1518
1519    /* The EGL_KHR_create_context_no_error spec says:
1520     *
1521     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1522     *    used to create <share_context> does not match the value of
1523     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1524     */
1525    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1526       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1527       goto cleanup;
1528    }
1529
1530    switch (dri2_ctx->base.ClientAPI) {
1531    case EGL_OPENGL_ES_API:
1532       switch (dri2_ctx->base.ClientMajorVersion) {
1533       case 1:
1534          api = __DRI_API_GLES;
1535          break;
1536       case 2:
1537          api = __DRI_API_GLES2;
1538          break;
1539       case 3:
1540          api = __DRI_API_GLES3;
1541          break;
1542       default:
1543          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1544          free(dri2_ctx);
1545          return NULL;
1546       }
1547       break;
1548    case EGL_OPENGL_API:
1549       if ((dri2_ctx->base.ClientMajorVersion >= 4
1550            || (dri2_ctx->base.ClientMajorVersion == 3
1551                && dri2_ctx->base.ClientMinorVersion >= 2))
1552           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1553          api = __DRI_API_OPENGL_CORE;
1554       else if (dri2_ctx->base.ClientMajorVersion == 3 &&
1555                dri2_ctx->base.ClientMinorVersion == 1)
1556          api = __DRI_API_OPENGL_CORE;
1557       else
1558          api = __DRI_API_OPENGL;
1559       break;
1560    default:
1561       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1562       free(dri2_ctx);
1563       return NULL;
1564    }
1565
1566    if (conf != NULL) {
1567       /* The config chosen here isn't necessarily
1568        * used for surfaces later.
1569        * A pixmap surface will use the single config.
1570        * This opportunity depends on disabling the
1571        * doubleBufferMode check in
1572        * src/mesa/main/context.c:check_compatible()
1573        */
1574       if (dri2_config->dri_config[1][0])
1575          dri_config = dri2_config->dri_config[1][0];
1576       else
1577          dri_config = dri2_config->dri_config[0][0];
1578    }
1579    else
1580       dri_config = NULL;
1581
1582    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1583                                   &num_attribs))
1584       goto cleanup;
1585
1586    if (dri2_dpy->image_driver) {
1587       dri2_ctx->dri_context =
1588          dri2_dpy->image_driver->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 if (dri2_dpy->dri2) {
1598       if (dri2_dpy->dri2->base.version >= 3) {
1599          dri2_ctx->dri_context =
1600             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1601                                                  api,
1602                                                  dri_config,
1603                                                  shared,
1604                                                  num_attribs / 2,
1605                                                  ctx_attribs,
1606                                                  & error,
1607                                                  dri2_ctx);
1608          dri2_create_context_attribs_error(error);
1609       } else {
1610          dri2_ctx->dri_context =
1611             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1612                                                    api,
1613                                                    dri_config,
1614                                                    shared,
1615                                                    dri2_ctx);
1616       }
1617    } else {
1618       assert(dri2_dpy->swrast);
1619       if (dri2_dpy->swrast->base.version >= 3) {
1620          dri2_ctx->dri_context =
1621             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1622                                                    api,
1623                                                    dri_config,
1624                                                    shared,
1625                                                    num_attribs / 2,
1626                                                    ctx_attribs,
1627                                                    & error,
1628                                                    dri2_ctx);
1629          dri2_create_context_attribs_error(error);
1630       } else {
1631          dri2_ctx->dri_context =
1632             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1633                                                      api,
1634                                                      dri_config,
1635                                                      shared,
1636                                                      dri2_ctx);
1637       }
1638    }
1639
1640    if (!dri2_ctx->dri_context)
1641       goto cleanup;
1642
1643    return &dri2_ctx->base;
1644
1645  cleanup:
1646    free(dri2_ctx);
1647    return NULL;
1648 }
1649
1650 /**
1651  * Called via eglDestroyContext(), drv->DestroyContext().
1652  */
1653 static EGLBoolean
1654 dri2_destroy_context(_EGLDisplay *disp, _EGLContext *ctx)
1655 {
1656    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1657    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1658
1659    if (_eglPutContext(ctx)) {
1660       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1661       free(dri2_ctx);
1662    }
1663
1664    return EGL_TRUE;
1665 }
1666
1667 EGLBoolean
1668 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1669         _EGLConfig *conf, const EGLint *attrib_list,
1670         EGLBoolean enable_out_fence, void *native_surface)
1671 {
1672    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1673    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1674
1675    dri2_surf->out_fence_fd = -1;
1676    dri2_surf->enable_out_fence = false;
1677    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1678        dri2_dpy->fence->get_capabilities &&
1679        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1680         __DRI_FENCE_CAP_NATIVE_FD)) {
1681       dri2_surf->enable_out_fence = enable_out_fence;
1682    }
1683
1684    return _eglInitSurface(surf, disp, type, conf, attrib_list, native_surface);
1685 }
1686
1687 static void
1688 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1689 {
1690    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1691
1692    if (dri2_surf->out_fence_fd >= 0)
1693       close(dri2_surf->out_fence_fd);
1694
1695    dri2_surf->out_fence_fd = fence_fd;
1696 }
1697
1698 void
1699 dri2_fini_surface(_EGLSurface *surf)
1700 {
1701    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1702
1703    dri2_surface_set_out_fence_fd(surf, -1);
1704    dri2_surf->enable_out_fence = false;
1705 }
1706
1707 static EGLBoolean
1708 dri2_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
1709 {
1710    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1711
1712    if (!_eglPutSurface(surf))
1713       return EGL_TRUE;
1714
1715    return dri2_dpy->vtbl->destroy_surface(disp, surf);
1716 }
1717
1718 static void
1719 dri2_surf_update_fence_fd(_EGLContext *ctx,
1720                           _EGLDisplay *disp, _EGLSurface *surf)
1721 {
1722    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1723    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1724    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1725    int fence_fd = -1;
1726    void *fence;
1727
1728    if (!dri2_surf->enable_out_fence)
1729       return;
1730
1731    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1732    if (fence) {
1733       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1734                                                fence);
1735       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1736    }
1737    dri2_surface_set_out_fence_fd(surf, fence_fd);
1738 }
1739
1740 EGLBoolean
1741 dri2_create_drawable(struct dri2_egl_display *dri2_dpy,
1742                      const __DRIconfig *config,
1743                      struct dri2_egl_surface *dri2_surf,
1744                      void *loaderPrivate)
1745 {
1746    __DRIcreateNewDrawableFunc createNewDrawable;
1747
1748    if (dri2_dpy->image_driver)
1749       createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
1750    else if (dri2_dpy->dri2)
1751       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
1752    else if (dri2_dpy->swrast)
1753       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
1754    else
1755       return _eglError(EGL_BAD_ALLOC, "no createNewDrawable");
1756
1757    dri2_surf->dri_drawable = createNewDrawable(dri2_dpy->dri_screen,
1758                                                config, loaderPrivate);
1759    if (dri2_surf->dri_drawable == NULL)
1760       return _eglError(EGL_BAD_ALLOC, "createNewDrawable");
1761
1762    return EGL_TRUE;
1763 }
1764
1765 /**
1766  * Called via eglMakeCurrent(), drv->MakeCurrent().
1767  */
1768 static EGLBoolean
1769 dri2_make_current(_EGLDisplay *disp, _EGLSurface *dsurf,
1770                   _EGLSurface *rsurf, _EGLContext *ctx)
1771 {
1772    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1773    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1774    _EGLDisplay *old_disp = NULL;
1775    struct dri2_egl_display *old_dri2_dpy = NULL;
1776    _EGLContext *old_ctx;
1777    _EGLSurface *old_dsurf, *old_rsurf;
1778    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1779    __DRIdrawable *ddraw, *rdraw;
1780    __DRIcontext *cctx;
1781    EGLint egl_error = EGL_SUCCESS;
1782
1783    if (!dri2_dpy)
1784       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1785
1786    /* make new bindings, set the EGL error otherwise */
1787    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
1788       return EGL_FALSE;
1789
1790    if (old_ctx == ctx && old_dsurf == dsurf && old_rsurf == rsurf) {
1791       _eglPutSurface(old_dsurf);
1792       _eglPutSurface(old_rsurf);
1793       _eglPutContext(old_ctx);
1794       return EGL_TRUE;
1795    }
1796
1797    if (old_ctx) {
1798       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1799       old_disp = old_ctx->Resource.Display;
1800       old_dri2_dpy = dri2_egl_display(old_disp);
1801
1802       /* Disable shared buffer mode */
1803       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1804           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1805          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1806       }
1807
1808       dri2_dpy->core->unbindContext(old_cctx);
1809
1810       if (old_dsurf)
1811          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1812    }
1813
1814    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1815    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1816    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1817
1818    if (cctx || ddraw || rdraw) {
1819       if (!dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1820          _EGLContext *tmp_ctx;
1821
1822          /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1823           * setting the error to EGL_BAD_MATCH is surely better than leaving it
1824           * as EGL_SUCCESS.
1825           */
1826          egl_error = EGL_BAD_MATCH;
1827
1828          /* undo the previous _eglBindContext */
1829          _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1830          assert(&dri2_ctx->base == ctx &&
1831                 tmp_dsurf == dsurf &&
1832                 tmp_rsurf == rsurf);
1833
1834          _eglPutSurface(dsurf);
1835          _eglPutSurface(rsurf);
1836          _eglPutContext(ctx);
1837
1838          _eglPutSurface(old_dsurf);
1839          _eglPutSurface(old_rsurf);
1840          _eglPutContext(old_ctx);
1841
1842          ddraw = (old_dsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_dsurf) : NULL;
1843          rdraw = (old_rsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_rsurf) : NULL;
1844          cctx = (old_ctx) ? dri2_egl_context(old_ctx)->dri_context : NULL;
1845
1846          /* undo the previous dri2_dpy->core->unbindContext */
1847          if (dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1848             if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1849                 old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1850                old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1851             }
1852
1853             return _eglError(egl_error, "eglMakeCurrent");
1854          }
1855
1856          /* We cannot restore the same state as it was before calling
1857           * eglMakeCurrent() and the spec isn't clear about what to do. We
1858           * can prevent EGL from calling into the DRI driver with no DRI
1859           * context bound.
1860           */
1861          dsurf = rsurf = NULL;
1862          ctx = NULL;
1863
1864          _eglBindContext(ctx, dsurf, rsurf, &tmp_ctx, &tmp_dsurf, &tmp_rsurf);
1865          assert(tmp_ctx == old_ctx && tmp_dsurf == old_dsurf &&
1866                 tmp_rsurf == old_rsurf);
1867
1868          _eglLog(_EGL_WARNING, "DRI2: failed to rebind the previous context");
1869       } else {
1870          /* dri2_dpy->core->bindContext succeeded, so take a reference on the
1871           * dri2_dpy. This prevents dri2_dpy from being reinitialized when a
1872           * EGLDisplay is terminated and then initialized again while a
1873           * context is still bound. See dri2_intitialize() for a more in depth
1874           * explanation. */
1875          dri2_dpy->ref_count++;
1876       }
1877    }
1878
1879    dri2_destroy_surface(disp, old_dsurf);
1880    dri2_destroy_surface(disp, old_rsurf);
1881
1882    if (old_ctx) {
1883       dri2_destroy_context(disp, old_ctx);
1884       dri2_display_release(old_disp);
1885    }
1886
1887    if (egl_error != EGL_SUCCESS)
1888       return _eglError(egl_error, "eglMakeCurrent");
1889
1890    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1891        dri2_dpy->vtbl->set_shared_buffer_mode) {
1892       /* Always update the shared buffer mode. This is obviously needed when
1893        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1894        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1895        * case where external non-EGL API may have changed window's shared
1896        * buffer mode since we last saw it.
1897        */
1898       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1899       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1900    }
1901
1902    return EGL_TRUE;
1903 }
1904
1905 __DRIdrawable *
1906 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1907 {
1908    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1909
1910    return dri2_surf->dri_drawable;
1911 }
1912
1913 /*
1914  * Called from eglGetProcAddress() via drv->GetProcAddress().
1915  */
1916 static _EGLProc
1917 dri2_get_proc_address(const char *procname)
1918 {
1919    return _glapi_get_proc_address(procname);
1920 }
1921
1922 static _EGLSurface*
1923 dri2_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
1924                            void *native_window, const EGLint *attrib_list)
1925 {
1926    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1927    return dri2_dpy->vtbl->create_window_surface(disp, conf, native_window,
1928                                                 attrib_list);
1929 }
1930
1931 static _EGLSurface*
1932 dri2_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
1933                            void *native_pixmap, const EGLint *attrib_list)
1934 {
1935    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1936    if (!dri2_dpy->vtbl->create_pixmap_surface)
1937       return NULL;
1938    return dri2_dpy->vtbl->create_pixmap_surface(disp, conf, native_pixmap,
1939                                                 attrib_list);
1940 }
1941
1942 static _EGLSurface*
1943 dri2_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
1944                             const EGLint *attrib_list)
1945 {
1946    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1947    if (!dri2_dpy->vtbl->create_pbuffer_surface)
1948       return NULL;
1949    return dri2_dpy->vtbl->create_pbuffer_surface(disp, conf, attrib_list);
1950 }
1951
1952 static EGLBoolean
1953 dri2_swap_interval(_EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
1954 {
1955    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1956    if (!dri2_dpy->vtbl->swap_interval)
1957       return EGL_TRUE;
1958    return dri2_dpy->vtbl->swap_interval(disp, surf, interval);
1959 }
1960
1961 /**
1962  * Asks the client API to flush any rendering to the drawable so that we can
1963  * do our swapbuffers.
1964  */
1965 void
1966 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1967 {
1968    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1969    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1970
1971    if (dri2_dpy->flush) {
1972       if (dri2_dpy->flush->base.version >= 4) {
1973          /* We know there's a current context because:
1974           *
1975           *     "If surface is not bound to the calling thread’s current
1976           *      context, an EGL_BAD_SURFACE error is generated."
1977          */
1978          _EGLContext *ctx = _eglGetCurrentContext();
1979          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1980
1981          /* From the EGL 1.4 spec (page 52):
1982           *
1983           *     "The contents of ancillary buffers are always undefined
1984           *      after calling eglSwapBuffers."
1985           */
1986          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1987                                            dri_drawable,
1988                                            __DRI2_FLUSH_DRAWABLE |
1989                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1990                                            __DRI2_THROTTLE_SWAPBUFFER);
1991       } else {
1992          dri2_dpy->flush->flush(dri_drawable);
1993       }
1994    }
1995 }
1996
1997 static EGLBoolean
1998 dri2_swap_buffers(_EGLDisplay *disp, _EGLSurface *surf)
1999 {
2000    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2001    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2002    _EGLContext *ctx = _eglGetCurrentContext();
2003    EGLBoolean ret;
2004
2005    if (ctx && surf)
2006       dri2_surf_update_fence_fd(ctx, disp, surf);
2007    ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2008
2009    /* SwapBuffers marks the end of the frame; reset the damage region for
2010     * use again next time.
2011     */
2012    if (ret && dri2_dpy->buffer_damage &&
2013        dri2_dpy->buffer_damage->set_damage_region)
2014       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2015
2016    return ret;
2017 }
2018
2019 static EGLBoolean
2020 dri2_swap_buffers_with_damage(_EGLDisplay *disp, _EGLSurface *surf,
2021                               const EGLint *rects, EGLint n_rects)
2022 {
2023    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2024    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2025    _EGLContext *ctx = _eglGetCurrentContext();
2026    EGLBoolean ret;
2027
2028    if (ctx && surf)
2029       dri2_surf_update_fence_fd(ctx, disp, surf);
2030    if (dri2_dpy->vtbl->swap_buffers_with_damage)
2031       ret = dri2_dpy->vtbl->swap_buffers_with_damage(disp, surf,
2032                                                      rects, n_rects);
2033    else
2034       ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2035
2036    /* SwapBuffers marks the end of the frame; reset the damage region for
2037     * use again next time.
2038     */
2039    if (ret && dri2_dpy->buffer_damage &&
2040        dri2_dpy->buffer_damage->set_damage_region)
2041       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2042
2043    return ret;
2044 }
2045
2046 static EGLBoolean
2047 dri2_swap_buffers_region(_EGLDisplay *disp, _EGLSurface *surf,
2048                          EGLint numRects, const EGLint *rects)
2049 {
2050    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2051    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2052    EGLBoolean ret;
2053
2054    if (!dri2_dpy->vtbl->swap_buffers_region)
2055       return EGL_FALSE;
2056    ret = dri2_dpy->vtbl->swap_buffers_region(disp, surf, numRects, rects);
2057
2058    /* SwapBuffers marks the end of the frame; reset the damage region for
2059     * use again next time.
2060     */
2061    if (ret && dri2_dpy->buffer_damage &&
2062        dri2_dpy->buffer_damage->set_damage_region)
2063       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2064
2065    return ret;
2066 }
2067
2068 static EGLBoolean
2069 dri2_set_damage_region(_EGLDisplay *disp, _EGLSurface *surf,
2070                        EGLint *rects, EGLint n_rects)
2071 {
2072    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2073    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2074
2075    if (!dri2_dpy->buffer_damage || !dri2_dpy->buffer_damage->set_damage_region)
2076       return EGL_FALSE;
2077
2078    dri2_dpy->buffer_damage->set_damage_region(drawable, n_rects, rects);
2079    return EGL_TRUE;
2080 }
2081
2082 static EGLBoolean
2083 dri2_post_sub_buffer(_EGLDisplay *disp, _EGLSurface *surf,
2084                      EGLint x, EGLint y, EGLint width, EGLint height)
2085 {
2086    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2087    if (!dri2_dpy->vtbl->post_sub_buffer)
2088       return EGL_FALSE;
2089    return dri2_dpy->vtbl->post_sub_buffer(disp, surf, x, y, width, height);
2090 }
2091
2092 static EGLBoolean
2093 dri2_copy_buffers(_EGLDisplay *disp, _EGLSurface *surf, void *native_pixmap_target)
2094 {
2095    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2096    if (!dri2_dpy->vtbl->copy_buffers)
2097       return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
2098    return dri2_dpy->vtbl->copy_buffers(disp, surf, native_pixmap_target);
2099 }
2100
2101 static EGLint
2102 dri2_query_buffer_age(_EGLDisplay *disp, _EGLSurface *surf)
2103 {
2104    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2105    if (!dri2_dpy->vtbl->query_buffer_age)
2106       return 0;
2107    return dri2_dpy->vtbl->query_buffer_age(disp, surf);
2108 }
2109
2110 static EGLBoolean
2111 dri2_wait_client(_EGLDisplay *disp, _EGLContext *ctx)
2112 {
2113    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2114    _EGLSurface *surf = ctx->DrawSurface;
2115    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2116
2117    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
2118     * we need to copy fake to real here.*/
2119
2120    if (dri2_dpy->flush != NULL)
2121       dri2_dpy->flush->flush(dri_drawable);
2122
2123    return EGL_TRUE;
2124 }
2125
2126 static EGLBoolean
2127 dri2_wait_native(EGLint engine)
2128 {
2129    if (engine != EGL_CORE_NATIVE_ENGINE)
2130       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
2131    /* glXWaitX(); */
2132
2133    return EGL_TRUE;
2134 }
2135
2136 static EGLBoolean
2137 dri2_bind_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2138 {
2139    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2140    struct dri2_egl_context *dri2_ctx;
2141    _EGLContext *ctx;
2142    GLint format, target;
2143    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2144
2145    ctx = _eglGetCurrentContext();
2146    dri2_ctx = dri2_egl_context(ctx);
2147
2148    if (!_eglBindTexImage(disp, surf, buffer))
2149       return EGL_FALSE;
2150
2151    switch (surf->TextureFormat) {
2152    case EGL_TEXTURE_RGB:
2153       format = __DRI_TEXTURE_FORMAT_RGB;
2154       break;
2155    case EGL_TEXTURE_RGBA:
2156       format = __DRI_TEXTURE_FORMAT_RGBA;
2157       break;
2158    default:
2159       assert(!"Unexpected texture format in dri2_bind_tex_image()");
2160       format = __DRI_TEXTURE_FORMAT_RGBA;
2161    }
2162
2163    switch (surf->TextureTarget) {
2164    case EGL_TEXTURE_2D:
2165       target = GL_TEXTURE_2D;
2166       break;
2167    default:
2168       target = GL_TEXTURE_2D;
2169       assert(!"Unexpected texture target in dri2_bind_tex_image()");
2170    }
2171
2172    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
2173                                        target, format,
2174                                        dri_drawable);
2175
2176    return EGL_TRUE;
2177 }
2178
2179 static EGLBoolean
2180 dri2_release_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2181 {
2182    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2183    struct dri2_egl_context *dri2_ctx;
2184    _EGLContext *ctx;
2185    GLint  target;
2186    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2187
2188    ctx = _eglGetCurrentContext();
2189    dri2_ctx = dri2_egl_context(ctx);
2190
2191    if (!_eglReleaseTexImage(disp, surf, buffer))
2192       return EGL_FALSE;
2193
2194    switch (surf->TextureTarget) {
2195    case EGL_TEXTURE_2D:
2196       target = GL_TEXTURE_2D;
2197       break;
2198    default:
2199       assert(!"missing texture target");
2200    }
2201
2202    if (dri2_dpy->tex_buffer->base.version >= 3 &&
2203        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
2204       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
2205                                              target, dri_drawable);
2206    }
2207
2208    return EGL_TRUE;
2209 }
2210
2211 static _EGLImage*
2212 dri2_create_image(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
2213                   EGLClientBuffer buffer, const EGLint *attr_list)
2214 {
2215    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2216    return dri2_dpy->vtbl->create_image(disp, ctx, target, buffer,
2217                                        attr_list);
2218 }
2219
2220 _EGLImage *
2221 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
2222 {
2223    struct dri2_egl_image *dri2_img;
2224
2225    if (dri_image == NULL) {
2226       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2227       return NULL;
2228    }
2229
2230    dri2_img = malloc(sizeof *dri2_img);
2231    if (!dri2_img) {
2232       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2233       return NULL;
2234    }
2235
2236    _eglInitImage(&dri2_img->base, disp);
2237
2238    dri2_img->dri_image = dri_image;
2239
2240    return &dri2_img->base;
2241 }
2242
2243 /**
2244  * Translate a DRI Image extension error code into an EGL error code.
2245  */
2246 static EGLint
2247 egl_error_from_dri_image_error(int dri_error)
2248 {
2249    switch (dri_error) {
2250    case __DRI_IMAGE_ERROR_SUCCESS:
2251       return EGL_SUCCESS;
2252    case __DRI_IMAGE_ERROR_BAD_ALLOC:
2253       return EGL_BAD_ALLOC;
2254    case __DRI_IMAGE_ERROR_BAD_MATCH:
2255       return EGL_BAD_MATCH;
2256    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
2257       return EGL_BAD_PARAMETER;
2258    case __DRI_IMAGE_ERROR_BAD_ACCESS:
2259       return EGL_BAD_ACCESS;
2260    default:
2261       assert(!"unknown dri_error code");
2262       return EGL_BAD_ALLOC;
2263    }
2264 }
2265
2266 static _EGLImage *
2267 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
2268                                    EGLClientBuffer buffer,
2269                                    const EGLint *attr_list)
2270 {
2271    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2272    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2273    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
2274    __DRIimage *dri_image;
2275
2276    if (renderbuffer == 0) {
2277       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2278       return EGL_NO_IMAGE_KHR;
2279    }
2280
2281    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
2282       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2283       return EGL_NO_IMAGE_KHR;
2284    }
2285
2286    if (dri2_dpy->image->base.version >= 17 &&
2287        dri2_dpy->image->createImageFromRenderbuffer2) {
2288       unsigned error = ~0;
2289
2290       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
2291                dri2_ctx->dri_context, renderbuffer, NULL, &error);
2292
2293       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
2294
2295       if (!dri_image) {
2296          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
2297          return EGL_NO_IMAGE_KHR;
2298       }
2299    } else {
2300       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
2301                dri2_ctx->dri_context, renderbuffer, NULL);
2302       if (!dri_image) {
2303          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2304          return EGL_NO_IMAGE_KHR;
2305       }
2306    }
2307
2308    return dri2_create_image_from_dri(disp, dri_image);
2309 }
2310
2311 #ifdef HAVE_WAYLAND_PLATFORM
2312
2313 /* This structure describes how a wl_buffer maps to one or more
2314  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
2315  * offsets and strides of the planes in the buffer.  This table maps a
2316  * wl_drm format code to a description of the planes in the buffer
2317  * that lets us create a __DRIimage for each of the planes. */
2318
2319 static const struct wl_drm_components_descriptor {
2320    uint32_t dri_components;
2321    EGLint components;
2322    int nplanes;
2323 } wl_drm_components[] = {
2324    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
2325    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
2326    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
2327    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
2328    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
2329 };
2330
2331 static _EGLImage *
2332 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2333                                     EGLClientBuffer _buffer,
2334                                     const EGLint *attr_list)
2335 {
2336    struct wl_drm_buffer *buffer;
2337    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2338    const struct wl_drm_components_descriptor *f;
2339    __DRIimage *dri_image;
2340    _EGLImageAttribs attrs;
2341    int32_t plane;
2342
2343    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
2344                                    (struct wl_resource *) _buffer);
2345    if (!buffer)
2346        return NULL;
2347
2348    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2349       return NULL;
2350
2351    plane = attrs.PlaneWL;
2352    f = buffer->driver_format;
2353    if (plane < 0 || plane >= f->nplanes) {
2354       _eglError(EGL_BAD_PARAMETER,
2355                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2356       return NULL;
2357    }
2358
2359    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2360    if (dri_image == NULL && plane == 0)
2361       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
2362    if (dri_image == NULL) {
2363       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2364       return NULL;
2365    }
2366
2367    return dri2_create_image_from_dri(disp, dri_image);
2368 }
2369 #endif
2370
2371 static EGLBoolean
2372 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
2373                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2374                               EGLuint64KHR *sbc)
2375 {
2376    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2377    if (!dri2_dpy->vtbl->get_sync_values)
2378       return EGL_FALSE;
2379    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
2380 }
2381
2382 /**
2383  * Set the error code after a call to
2384  * dri2_egl_image::dri_image::createImageFromTexture.
2385  */
2386 static void
2387 dri2_create_image_khr_texture_error(int dri_error)
2388 {
2389    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2390
2391    if (egl_error != EGL_SUCCESS)
2392       _eglError(egl_error, "dri2_create_image_khr_texture");
2393 }
2394
2395 static _EGLImage *
2396 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2397                                    EGLenum target,
2398                                    EGLClientBuffer buffer,
2399                                    const EGLint *attr_list)
2400 {
2401    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2402    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2403    struct dri2_egl_image *dri2_img;
2404    GLuint texture = (GLuint) (uintptr_t) buffer;
2405    _EGLImageAttribs attrs;
2406    GLuint depth;
2407    GLenum gl_target;
2408    unsigned error;
2409
2410    if (texture == 0) {
2411       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2412       return EGL_NO_IMAGE_KHR;
2413    }
2414
2415    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2416       return EGL_NO_IMAGE_KHR;
2417
2418    switch (target) {
2419    case EGL_GL_TEXTURE_2D_KHR:
2420       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2421          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2422          return EGL_NO_IMAGE_KHR;
2423       }
2424       depth = 0;
2425       gl_target = GL_TEXTURE_2D;
2426       break;
2427    case EGL_GL_TEXTURE_3D_KHR:
2428       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2429          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2430          return EGL_NO_IMAGE_KHR;
2431       }
2432
2433       depth = attrs.GLTextureZOffset;
2434       gl_target = GL_TEXTURE_3D;
2435       break;
2436    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2437    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2438    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2439    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2440    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2441    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2442       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2443          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2444          return EGL_NO_IMAGE_KHR;
2445       }
2446
2447       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2448       gl_target = GL_TEXTURE_CUBE_MAP;
2449       break;
2450    default:
2451       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2452       return EGL_NO_IMAGE_KHR;
2453    }
2454
2455    dri2_img = malloc(sizeof *dri2_img);
2456    if (!dri2_img) {
2457       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2458       return EGL_NO_IMAGE_KHR;
2459    }
2460
2461    _eglInitImage(&dri2_img->base, disp);
2462
2463    dri2_img->dri_image =
2464       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2465                                               gl_target,
2466                                               texture,
2467                                               depth,
2468                                               attrs.GLTextureLevel,
2469                                               &error,
2470                                               NULL);
2471    dri2_create_image_khr_texture_error(error);
2472
2473    if (!dri2_img->dri_image) {
2474       free(dri2_img);
2475       return EGL_NO_IMAGE_KHR;
2476    }
2477    return &dri2_img->base;
2478 }
2479
2480 static EGLBoolean
2481 dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
2482                    EGLint attribute, EGLint *value)
2483 {
2484    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2485    if (!dri2_dpy->vtbl->query_surface)
2486       return _eglQuerySurface(disp, surf, attribute, value);
2487    return dri2_dpy->vtbl->query_surface(disp, surf, attribute, value);
2488 }
2489
2490 static struct wl_buffer*
2491 dri2_create_wayland_buffer_from_image(_EGLDisplay *disp, _EGLImage *img)
2492 {
2493    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2494    if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
2495       return NULL;
2496    return dri2_dpy->vtbl->create_wayland_buffer_from_image(disp, img);
2497 }
2498
2499 #ifdef HAVE_LIBDRM
2500 static _EGLImage *
2501 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2502                                   EGLClientBuffer buffer, const EGLint *attr_list)
2503 {
2504    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2505    EGLint format, name, pitch;
2506    _EGLImageAttribs attrs;
2507    __DRIimage *dri_image;
2508
2509    name = (EGLint) (uintptr_t) buffer;
2510
2511    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2512       return NULL;
2513
2514    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2515        attrs.DRMBufferStrideMESA <= 0) {
2516       _eglError(EGL_BAD_PARAMETER,
2517                 "bad width, height or stride");
2518       return NULL;
2519    }
2520
2521    switch (attrs.DRMBufferFormatMESA) {
2522    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2523       format = __DRI_IMAGE_FORMAT_ARGB8888;
2524       pitch = attrs.DRMBufferStrideMESA;
2525       break;
2526    default:
2527       _eglError(EGL_BAD_PARAMETER,
2528                 "dri2_create_image_khr: unsupported pixmap depth");
2529       return NULL;
2530    }
2531
2532    dri_image =
2533       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2534                                            attrs.Width,
2535                                            attrs.Height,
2536                                            format,
2537                                            name,
2538                                            pitch,
2539                                            NULL);
2540
2541    return dri2_create_image_from_dri(disp, dri_image);
2542 }
2543
2544 static EGLBoolean
2545 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2546 {
2547    /**
2548      * The spec says:
2549      *
2550      * "Required attributes and their values are as follows:
2551      *
2552      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2553      *
2554      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2555      *    by drm_fourcc.h and used as the pixel_format parameter of the
2556      *    drm_mode_fb_cmd2 ioctl."
2557      *
2558      * and
2559      *
2560      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2561      *    incomplete, EGL_BAD_PARAMETER is generated."
2562      */
2563    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2564        !attrs->DMABufFourCC.IsPresent)
2565       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2566
2567    /**
2568     * Also:
2569     *
2570     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2571     *  specified for a plane's pitch or offset isn't supported by EGL,
2572     *  EGL_BAD_ACCESS is generated."
2573     */
2574    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2575       if (attrs->DMABufPlanePitches[i].IsPresent &&
2576           attrs->DMABufPlanePitches[i].Value <= 0)
2577          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2578    }
2579
2580    /**
2581     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2582     * attribute values may be given.
2583     *
2584     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2585     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2586     */
2587    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2588       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2589           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2590          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2591    }
2592
2593    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2594     * mandate it, we only accept the same modifier across all planes. */
2595    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2596       if (attrs->DMABufPlaneFds[i].IsPresent) {
2597          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2598                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2599              (attrs->DMABufPlaneModifiersLo[0].Value !=
2600                attrs->DMABufPlaneModifiersLo[i].Value) ||
2601              (attrs->DMABufPlaneModifiersHi[0].Value !=
2602                attrs->DMABufPlaneModifiersHi[i].Value))
2603             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2604       }
2605    }
2606
2607    return EGL_TRUE;
2608 }
2609
2610 /* Returns the total number of planes for the format or zero if it isn't a
2611  * valid fourcc format.
2612  */
2613 static unsigned
2614 dri2_num_fourcc_format_planes(EGLint format)
2615 {
2616    switch (format) {
2617    case DRM_FORMAT_R8:
2618    case DRM_FORMAT_RG88:
2619    case DRM_FORMAT_GR88:
2620    case DRM_FORMAT_R16:
2621    case DRM_FORMAT_GR1616:
2622    case DRM_FORMAT_RGB332:
2623    case DRM_FORMAT_BGR233:
2624    case DRM_FORMAT_XRGB4444:
2625    case DRM_FORMAT_XBGR4444:
2626    case DRM_FORMAT_RGBX4444:
2627    case DRM_FORMAT_BGRX4444:
2628    case DRM_FORMAT_ARGB4444:
2629    case DRM_FORMAT_ABGR4444:
2630    case DRM_FORMAT_RGBA4444:
2631    case DRM_FORMAT_BGRA4444:
2632    case DRM_FORMAT_XRGB1555:
2633    case DRM_FORMAT_XBGR1555:
2634    case DRM_FORMAT_RGBX5551:
2635    case DRM_FORMAT_BGRX5551:
2636    case DRM_FORMAT_ARGB1555:
2637    case DRM_FORMAT_ABGR1555:
2638    case DRM_FORMAT_RGBA5551:
2639    case DRM_FORMAT_BGRA5551:
2640    case DRM_FORMAT_RGB565:
2641    case DRM_FORMAT_BGR565:
2642    case DRM_FORMAT_RGB888:
2643    case DRM_FORMAT_BGR888:
2644    case DRM_FORMAT_XRGB8888:
2645    case DRM_FORMAT_XBGR8888:
2646    case DRM_FORMAT_RGBX8888:
2647    case DRM_FORMAT_BGRX8888:
2648    case DRM_FORMAT_ARGB8888:
2649    case DRM_FORMAT_ABGR8888:
2650    case DRM_FORMAT_RGBA8888:
2651    case DRM_FORMAT_BGRA8888:
2652    case DRM_FORMAT_XRGB2101010:
2653    case DRM_FORMAT_XBGR2101010:
2654    case DRM_FORMAT_RGBX1010102:
2655    case DRM_FORMAT_BGRX1010102:
2656    case DRM_FORMAT_ARGB2101010:
2657    case DRM_FORMAT_ABGR2101010:
2658    case DRM_FORMAT_RGBA1010102:
2659    case DRM_FORMAT_BGRA1010102:
2660    case DRM_FORMAT_XBGR16161616F:
2661    case DRM_FORMAT_ABGR16161616F:
2662    case DRM_FORMAT_YUYV:
2663    case DRM_FORMAT_YVYU:
2664    case DRM_FORMAT_UYVY:
2665    case DRM_FORMAT_VYUY:
2666    case DRM_FORMAT_AYUV:
2667    case DRM_FORMAT_XYUV8888:
2668    case DRM_FORMAT_Y210:
2669    case DRM_FORMAT_Y212:
2670    case DRM_FORMAT_Y216:
2671    case DRM_FORMAT_Y410:
2672    case DRM_FORMAT_Y412:
2673    case DRM_FORMAT_Y416:
2674       return 1;
2675
2676    case DRM_FORMAT_NV12:
2677    case DRM_FORMAT_NV21:
2678    case DRM_FORMAT_NV16:
2679    case DRM_FORMAT_NV61:
2680    case DRM_FORMAT_P010:
2681    case DRM_FORMAT_P012:
2682    case DRM_FORMAT_P016:
2683       return 2;
2684
2685    case DRM_FORMAT_YUV410:
2686    case DRM_FORMAT_YVU410:
2687    case DRM_FORMAT_YUV411:
2688    case DRM_FORMAT_YVU411:
2689    case DRM_FORMAT_YUV420:
2690    case DRM_FORMAT_YVU420:
2691    case DRM_FORMAT_YUV422:
2692    case DRM_FORMAT_YVU422:
2693    case DRM_FORMAT_YUV444:
2694    case DRM_FORMAT_YVU444:
2695       return 3;
2696
2697    default:
2698       return 0;
2699    }
2700 }
2701
2702 /* Returns the total number of file descriptors. Zero indicates an error. */
2703 static unsigned
2704 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2705 {
2706    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2707    if (plane_n == 0) {
2708       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2709       return 0;
2710    }
2711
2712    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2713       /**
2714        * The modifiers extension spec says:
2715        *
2716        * "Modifiers may modify any attribute of a buffer import, including
2717        *  but not limited to adding extra planes to a format which
2718        *  otherwise does not have those planes. As an example, a modifier
2719        *  may add a plane for an external compression buffer to a
2720        *  single-plane format. The exact meaning and effect of any
2721        *  modifier is canonically defined by drm_fourcc.h, not as part of
2722        *  this extension."
2723        */
2724       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2725           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2726          plane_n = i + 1;
2727       }
2728    }
2729
2730    /**
2731      * The spec says:
2732      *
2733      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2734      *    incomplete, EGL_BAD_PARAMETER is generated."
2735      */
2736    for (unsigned i = 0; i < plane_n; ++i) {
2737       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2738           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2739           !attrs->DMABufPlanePitches[i].IsPresent) {
2740          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2741          return 0;
2742       }
2743    }
2744
2745    /**
2746     * The spec also says:
2747     *
2748     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2749     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2750     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2751     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2752     */
2753    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2754       if (attrs->DMABufPlaneFds[i].IsPresent ||
2755           attrs->DMABufPlaneOffsets[i].IsPresent ||
2756           attrs->DMABufPlanePitches[i].IsPresent) {
2757          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2758          return 0;
2759       }
2760    }
2761
2762    return plane_n;
2763 }
2764
2765 static EGLBoolean
2766 dri2_query_dma_buf_formats(_EGLDisplay *disp, EGLint max,
2767                            EGLint *formats, EGLint *count)
2768 {
2769    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2770    if (max < 0 || (max > 0 && formats == NULL))
2771       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2772
2773    if (dri2_dpy->image->base.version < 15 ||
2774        dri2_dpy->image->queryDmaBufFormats == NULL)
2775       return EGL_FALSE;
2776
2777    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2778                                             formats, count))
2779       return EGL_FALSE;
2780
2781    if (max > 0) {
2782       /* Assert that all of the formats returned are actually fourcc formats.
2783        * Some day, if we want the internal interface function to be able to
2784        * return the fake fourcc formats defined in dri_interface.h, we'll have
2785        * to do something more clever here to pair the list down to just real
2786        * fourcc formats so that we don't leak the fake internal ones.
2787        */
2788       for (int i = 0; i < *count; i++) {
2789          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2790       }
2791    }
2792
2793    return EGL_TRUE;
2794 }
2795
2796 static EGLBoolean
2797 dri2_query_dma_buf_modifiers(_EGLDisplay *disp, EGLint format,
2798                              EGLint max, EGLuint64KHR *modifiers,
2799                              EGLBoolean *external_only, EGLint *count)
2800 {
2801    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2802
2803    if (dri2_num_fourcc_format_planes(format) == 0)
2804       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2805
2806    if (max < 0)
2807       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2808
2809    if (max > 0 && modifiers == NULL)
2810       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2811
2812    if (dri2_dpy->image->base.version < 15 ||
2813        dri2_dpy->image->queryDmaBufModifiers == NULL)
2814       return EGL_FALSE;
2815
2816    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2817                                              max, modifiers,
2818                                              (unsigned int *) external_only,
2819                                              count) == false)
2820       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2821
2822    return EGL_TRUE;
2823 }
2824
2825 /**
2826  * The spec says:
2827  *
2828  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2829  *  EGL will take a reference to the dma_buf(s) which it will release at any
2830  *  time while the EGLDisplay is initialized. It is the responsibility of the
2831  *  application to close the dma_buf file descriptors."
2832  *
2833  * Therefore we must never close or otherwise modify the file descriptors.
2834  */
2835 _EGLImage *
2836 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2837                           EGLClientBuffer buffer, const EGLint *attr_list)
2838 {
2839    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2840    _EGLImage *res;
2841    _EGLImageAttribs attrs;
2842    __DRIimage *dri_image;
2843    unsigned num_fds;
2844    int fds[DMA_BUF_MAX_PLANES];
2845    int pitches[DMA_BUF_MAX_PLANES];
2846    int offsets[DMA_BUF_MAX_PLANES];
2847    uint64_t modifier;
2848    bool has_modifier = false;
2849    unsigned error;
2850
2851    /**
2852     * The spec says:
2853     *
2854     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2855     *     error EGL_BAD_PARAMETER is generated."
2856     */
2857    if (buffer != NULL) {
2858       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2859       return NULL;
2860    }
2861
2862    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2863       return NULL;
2864
2865    if (!dri2_check_dma_buf_attribs(&attrs))
2866       return NULL;
2867
2868    num_fds = dri2_check_dma_buf_format(&attrs);
2869    if (!num_fds)
2870       return NULL;
2871
2872    for (unsigned i = 0; i < num_fds; ++i) {
2873       fds[i] = attrs.DMABufPlaneFds[i].Value;
2874       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2875       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2876    }
2877
2878    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2879     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2880     * attrs.DMABufPlaneModifiersHi[0] */
2881    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2882       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2883                                       attrs.DMABufPlaneModifiersLo[0].Value);
2884       has_modifier = true;
2885    }
2886
2887    if (attrs.ProtectedContent) {
2888       if (dri2_dpy->image->base.version < 18 ||
2889           dri2_dpy->image->createImageFromDmaBufs3 == NULL) {
2890          _eglError(EGL_BAD_MATCH, "unsupported protected_content attribute");
2891          return EGL_NO_IMAGE_KHR;
2892       }
2893       if (!has_modifier)
2894          modifier = DRM_FORMAT_MOD_INVALID;
2895
2896       dri_image =
2897          dri2_dpy->image->createImageFromDmaBufs3(dri2_dpy->dri_screen,
2898             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2899             modifier, fds, num_fds, pitches, offsets,
2900             attrs.DMABufYuvColorSpaceHint.Value,
2901             attrs.DMABufSampleRangeHint.Value,
2902             attrs.DMABufChromaHorizontalSiting.Value,
2903             attrs.DMABufChromaVerticalSiting.Value,
2904             attrs.ProtectedContent ? __DRI_IMAGE_PROTECTED_CONTENT_FLAG : 0,
2905             &error,
2906             NULL);
2907    }
2908    else if (has_modifier) {
2909       if (dri2_dpy->image->base.version < 15 ||
2910           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2911          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2912          return EGL_NO_IMAGE_KHR;
2913       }
2914       dri_image =
2915          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2916             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2917             modifier, fds, num_fds, pitches, offsets,
2918             attrs.DMABufYuvColorSpaceHint.Value,
2919             attrs.DMABufSampleRangeHint.Value,
2920             attrs.DMABufChromaHorizontalSiting.Value,
2921             attrs.DMABufChromaVerticalSiting.Value,
2922             &error,
2923             NULL);
2924    }
2925    else {
2926       dri_image =
2927          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2928             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2929             fds, num_fds, pitches, offsets,
2930             attrs.DMABufYuvColorSpaceHint.Value,
2931             attrs.DMABufSampleRangeHint.Value,
2932             attrs.DMABufChromaHorizontalSiting.Value,
2933             attrs.DMABufChromaVerticalSiting.Value,
2934             &error,
2935             NULL);
2936    }
2937    dri2_create_image_khr_texture_error(error);
2938
2939    if (!dri_image)
2940       return EGL_NO_IMAGE_KHR;
2941
2942    res = dri2_create_image_from_dri(disp, dri_image);
2943
2944    return res;
2945 }
2946 static _EGLImage *
2947 dri2_create_drm_image_mesa(_EGLDisplay *disp, const EGLint *attr_list)
2948 {
2949    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2950    struct dri2_egl_image *dri2_img;
2951    _EGLImageAttribs attrs;
2952    unsigned int dri_use, valid_mask;
2953    int format;
2954
2955    if (!attr_list) {
2956       _eglError(EGL_BAD_PARAMETER, __func__);
2957       return EGL_NO_IMAGE_KHR;
2958    }
2959
2960    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2961       return EGL_NO_IMAGE_KHR;
2962
2963    if (attrs.Width <= 0 || attrs.Height <= 0) {
2964       _eglError(EGL_BAD_PARAMETER, __func__);
2965       return EGL_NO_IMAGE_KHR;
2966    }
2967
2968    switch (attrs.DRMBufferFormatMESA) {
2969    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2970       format = __DRI_IMAGE_FORMAT_ARGB8888;
2971       break;
2972    default:
2973       _eglError(EGL_BAD_PARAMETER, __func__);
2974       return EGL_NO_IMAGE_KHR;
2975    }
2976
2977    valid_mask =
2978       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2979       EGL_DRM_BUFFER_USE_SHARE_MESA |
2980       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2981    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2982       _eglError(EGL_BAD_PARAMETER, __func__);
2983       return EGL_NO_IMAGE_KHR;
2984    }
2985
2986    dri_use = 0;
2987    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2988       dri_use |= __DRI_IMAGE_USE_SHARE;
2989    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2990       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2991    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2992       dri_use |= __DRI_IMAGE_USE_CURSOR;
2993
2994    dri2_img = malloc(sizeof *dri2_img);
2995    if (!dri2_img) {
2996       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2997       return EGL_NO_IMAGE_KHR;
2998    }
2999
3000    _eglInitImage(&dri2_img->base, disp);
3001
3002    dri2_img->dri_image =
3003       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
3004                                    attrs.Width, attrs.Height,
3005                                    format, dri_use, dri2_img);
3006    if (dri2_img->dri_image == NULL) {
3007       free(dri2_img);
3008        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
3009       return EGL_NO_IMAGE_KHR;
3010    }
3011
3012    return &dri2_img->base;
3013 }
3014
3015 static EGLBoolean
3016 dri2_export_drm_image_mesa(_EGLDisplay *disp, _EGLImage *img,
3017                           EGLint *name, EGLint *handle, EGLint *stride)
3018 {
3019    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3020    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3021
3022    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
3023                                             __DRI_IMAGE_ATTRIB_NAME, name))
3024       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
3025
3026    if (handle)
3027       dri2_dpy->image->queryImage(dri2_img->dri_image,
3028                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
3029
3030    if (stride)
3031       dri2_dpy->image->queryImage(dri2_img->dri_image,
3032                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
3033
3034    return EGL_TRUE;
3035 }
3036
3037 /**
3038  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
3039
3040  * The spec provides a boolean return for the driver to reject exporting for
3041  * basically any reason, but doesn't specify any particular error cases.  For
3042  * now, we just fail if we don't have a DRM fourcc for the format.
3043  */
3044 static bool
3045 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
3046 {
3047    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3048    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3049    EGLint fourcc;
3050
3051    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
3052                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
3053       return false;
3054    }
3055
3056    return true;
3057 }
3058
3059 static EGLBoolean
3060 dri2_export_dma_buf_image_query_mesa(_EGLDisplay *disp, _EGLImage *img,
3061                                      EGLint *fourcc, EGLint *nplanes,
3062                                      EGLuint64KHR *modifiers)
3063 {
3064    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3065    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3066    int num_planes;
3067
3068    if (!dri2_can_export_dma_buf_image(disp, img))
3069       return EGL_FALSE;
3070
3071    dri2_dpy->image->queryImage(dri2_img->dri_image,
3072                                __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
3073    if (nplanes)
3074      *nplanes = num_planes;
3075
3076    if (fourcc)
3077       dri2_dpy->image->queryImage(dri2_img->dri_image,
3078                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
3079
3080    if (modifiers) {
3081       int mod_hi, mod_lo;
3082       uint64_t modifier = DRM_FORMAT_MOD_INVALID;
3083       bool query;
3084
3085       query = dri2_dpy->image->queryImage(dri2_img->dri_image,
3086                                           __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
3087                                           &mod_hi);
3088       query &= dri2_dpy->image->queryImage(dri2_img->dri_image,
3089                                            __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
3090                                            &mod_lo);
3091       if (query)
3092          modifier = combine_u32_into_u64 (mod_hi, mod_lo);
3093
3094       for (int i = 0; i < num_planes; i++)
3095         modifiers[i] = modifier;
3096    }
3097
3098    return EGL_TRUE;
3099 }
3100
3101 static EGLBoolean
3102 dri2_export_dma_buf_image_mesa(_EGLDisplay *disp, _EGLImage *img,
3103                                int *fds, EGLint *strides, EGLint *offsets)
3104 {
3105    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3106    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3107    EGLint nplanes;
3108
3109    if (!dri2_can_export_dma_buf_image(disp, img))
3110       return EGL_FALSE;
3111
3112    /* EGL_MESA_image_dma_buf_export spec says:
3113     *    "If the number of fds is less than the number of planes, then
3114     *    subsequent fd slots should contain -1."
3115     */
3116    if (fds) {
3117       /* Query nplanes so that we know how big the given array is. */
3118       dri2_dpy->image->queryImage(dri2_img->dri_image,
3119                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
3120       memset(fds, -1, nplanes * sizeof(int));
3121    }
3122
3123    /* rework later to provide multiple fds/strides/offsets */
3124    if (fds)
3125       dri2_dpy->image->queryImage(dri2_img->dri_image,
3126                                   __DRI_IMAGE_ATTRIB_FD, fds);
3127
3128    if (strides)
3129       dri2_dpy->image->queryImage(dri2_img->dri_image,
3130                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
3131
3132    if (offsets) {
3133       int img_offset;
3134       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
3135                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
3136       if (ret)
3137          offsets[0] = img_offset;
3138       else
3139          offsets[0] = 0;
3140    }
3141
3142    return EGL_TRUE;
3143 }
3144
3145 #endif
3146
3147 _EGLImage *
3148 dri2_create_image_khr(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
3149                       EGLClientBuffer buffer, const EGLint *attr_list)
3150 {
3151    switch (target) {
3152    case EGL_GL_TEXTURE_2D_KHR:
3153    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
3154    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
3155    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
3156    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
3157    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
3158    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
3159    case EGL_GL_TEXTURE_3D_KHR:
3160       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
3161    case EGL_GL_RENDERBUFFER_KHR:
3162       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
3163 #ifdef HAVE_LIBDRM
3164    case EGL_DRM_BUFFER_MESA:
3165       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
3166    case EGL_LINUX_DMA_BUF_EXT:
3167       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
3168 #endif
3169 #ifdef HAVE_WAYLAND_PLATFORM
3170    case EGL_WAYLAND_BUFFER_WL:
3171       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
3172 #endif
3173    default:
3174       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
3175       return EGL_NO_IMAGE_KHR;
3176    }
3177 }
3178
3179 static EGLBoolean
3180 dri2_destroy_image_khr(_EGLDisplay *disp, _EGLImage *image)
3181 {
3182    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3183    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
3184
3185    dri2_dpy->image->destroyImage(dri2_img->dri_image);
3186    free(dri2_img);
3187
3188    return EGL_TRUE;
3189 }
3190
3191 #ifdef HAVE_WAYLAND_PLATFORM
3192
3193 static void
3194 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
3195                          struct wl_drm_buffer *buffer)
3196 {
3197    _EGLDisplay *disp = user_data;
3198    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3199    __DRIimage *img;
3200    int dri_components = 0;
3201
3202    if (fd == -1)
3203       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
3204                                                   buffer->width,
3205                                                   buffer->height,
3206                                                   buffer->format,
3207                                                   (int*)&name, 1,
3208                                                   buffer->stride,
3209                                                   buffer->offset,
3210                                                   NULL);
3211    else
3212       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
3213                                                 buffer->width,
3214                                                 buffer->height,
3215                                                 buffer->format,
3216                                                 &fd, 1,
3217                                                 buffer->stride,
3218                                                 buffer->offset,
3219                                                 NULL);
3220
3221    if (img == NULL)
3222       return;
3223
3224    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
3225
3226    buffer->driver_format = NULL;
3227    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
3228       if (wl_drm_components[i].dri_components == dri_components)
3229          buffer->driver_format = &wl_drm_components[i];
3230
3231    if (buffer->driver_format == NULL)
3232       dri2_dpy->image->destroyImage(img);
3233    else
3234       buffer->driver_buffer = img;
3235 }
3236
3237 static void
3238 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
3239 {
3240    _EGLDisplay *disp = user_data;
3241    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3242
3243    dri2_dpy->image->destroyImage(buffer->driver_buffer);
3244 }
3245
3246 static EGLBoolean
3247 dri2_bind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3248 {
3249    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3250    const struct wayland_drm_callbacks wl_drm_callbacks = {
3251       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
3252       .reference_buffer = dri2_wl_reference_buffer,
3253       .release_buffer = dri2_wl_release_buffer,
3254       .is_format_supported = dri2_wl_is_format_supported
3255    };
3256    int flags = 0;
3257    char *device_name;
3258    uint64_t cap;
3259
3260    if (dri2_dpy->wl_server_drm)
3261            return EGL_FALSE;
3262
3263    device_name = drmGetRenderDeviceNameFromFd(dri2_dpy->fd);
3264    if (!device_name)
3265       device_name = strdup(dri2_dpy->device_name);
3266    if (!device_name)
3267       return EGL_FALSE;
3268
3269    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
3270        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
3271        dri2_dpy->image->base.version >= 7 &&
3272        dri2_dpy->image->createImageFromFds != NULL)
3273       flags |= WAYLAND_DRM_PRIME;
3274
3275    dri2_dpy->wl_server_drm =
3276            wayland_drm_init(wl_dpy, device_name,
3277                             &wl_drm_callbacks, disp, flags);
3278
3279    free(device_name);
3280
3281    if (!dri2_dpy->wl_server_drm)
3282            return EGL_FALSE;
3283
3284 #ifdef HAVE_DRM_PLATFORM
3285    /* We have to share the wl_drm instance with gbm, so gbm can convert
3286     * wl_buffers to gbm bos. */
3287    if (dri2_dpy->gbm_dri)
3288       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
3289 #endif
3290
3291    return EGL_TRUE;
3292 }
3293
3294 static EGLBoolean
3295 dri2_unbind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3296 {
3297    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3298
3299    if (!dri2_dpy->wl_server_drm)
3300            return EGL_FALSE;
3301
3302    wayland_drm_uninit(dri2_dpy->wl_server_drm);
3303    dri2_dpy->wl_server_drm = NULL;
3304
3305    return EGL_TRUE;
3306 }
3307
3308 static EGLBoolean
3309 dri2_query_wayland_buffer_wl(_EGLDisplay *disp, struct wl_resource *buffer_resource,
3310                              EGLint attribute, EGLint *value)
3311 {
3312    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3313    struct wl_drm_buffer *buffer;
3314    const struct wl_drm_components_descriptor *format;
3315
3316    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
3317    if (!buffer)
3318       return EGL_FALSE;
3319
3320    format = buffer->driver_format;
3321    switch (attribute) {
3322    case EGL_TEXTURE_FORMAT:
3323       *value = format->components;
3324       return EGL_TRUE;
3325    case EGL_WIDTH:
3326       *value = buffer->width;
3327       return EGL_TRUE;
3328    case EGL_HEIGHT:
3329       *value = buffer->height;
3330       return EGL_TRUE;
3331    }
3332
3333    return EGL_FALSE;
3334 }
3335 #endif
3336
3337 static void
3338 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
3339 {
3340    p_atomic_inc(&sync->refcount);
3341 }
3342
3343 static void
3344 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
3345                     struct dri2_egl_sync *dri2_sync)
3346 {
3347    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
3348       switch (dri2_sync->base.Type) {
3349       case EGL_SYNC_REUSABLE_KHR:
3350          cnd_destroy(&dri2_sync->cond);
3351          break;
3352       case EGL_SYNC_NATIVE_FENCE_ANDROID:
3353          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
3354             close(dri2_sync->base.SyncFd);
3355          break;
3356       default:
3357          break;
3358       }
3359
3360       if (dri2_sync->fence)
3361          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
3362
3363       free(dri2_sync);
3364    }
3365 }
3366
3367 static _EGLSync *
3368 dri2_create_sync(_EGLDisplay *disp, EGLenum type, const EGLAttrib *attrib_list)
3369 {
3370    _EGLContext *ctx = _eglGetCurrentContext();
3371    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3372    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3373    struct dri2_egl_sync *dri2_sync;
3374    EGLint ret;
3375    pthread_condattr_t attr;
3376
3377    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
3378    if (!dri2_sync) {
3379       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3380       return NULL;
3381    }
3382
3383    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
3384       free(dri2_sync);
3385       return NULL;
3386    }
3387
3388    switch (type) {
3389    case EGL_SYNC_FENCE_KHR:
3390       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
3391       if (!dri2_sync->fence) {
3392          /* Why did it fail? DRI doesn't return an error code, so we emit
3393           * a generic EGL error that doesn't communicate user error.
3394           */
3395          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3396          free(dri2_sync);
3397          return NULL;
3398       }
3399       break;
3400
3401    case EGL_SYNC_CL_EVENT_KHR:
3402       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
3403                                  dri2_dpy->dri_screen,
3404                                  dri2_sync->base.CLEvent);
3405       /* this can only happen if the cl_event passed in is invalid. */
3406       if (!dri2_sync->fence) {
3407          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3408          free(dri2_sync);
3409          return NULL;
3410       }
3411
3412       /* the initial status must be "signaled" if the cl_event is signaled */
3413       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
3414                                             dri2_sync->fence, 0, 0))
3415          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3416       break;
3417
3418    case EGL_SYNC_REUSABLE_KHR:
3419       /* intialize attr */
3420       ret = pthread_condattr_init(&attr);
3421
3422       if (ret) {
3423          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3424          free(dri2_sync);
3425          return NULL;
3426       }
3427
3428       /* change clock attribute to CLOCK_MONOTONIC */
3429       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
3430
3431       if (ret) {
3432          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3433          free(dri2_sync);
3434          return NULL;
3435       }
3436
3437       ret = pthread_cond_init(&dri2_sync->cond, &attr);
3438
3439       if (ret) {
3440          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3441          free(dri2_sync);
3442          return NULL;
3443       }
3444
3445       /* initial status of reusable sync must be "unsignaled" */
3446       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3447       break;
3448
3449    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3450       if (dri2_dpy->fence->create_fence_fd) {
3451          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3452                                     dri2_ctx->dri_context,
3453                                     dri2_sync->base.SyncFd);
3454       }
3455       if (!dri2_sync->fence) {
3456          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3457          free(dri2_sync);
3458          return NULL;
3459       }
3460       break;
3461    }
3462
3463    p_atomic_set(&dri2_sync->refcount, 1);
3464    return &dri2_sync->base;
3465 }
3466
3467 static EGLBoolean
3468 dri2_destroy_sync(_EGLDisplay *disp, _EGLSync *sync)
3469 {
3470    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3471    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3472    EGLint ret = EGL_TRUE;
3473    EGLint err;
3474
3475    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3476     * then unlock all threads possibly blocked by the reusable sync before
3477     * destroying it.
3478     */
3479    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3480        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3481       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3482       /* unblock all threads currently blocked by sync */
3483       err = cnd_broadcast(&dri2_sync->cond);
3484
3485       if (err) {
3486          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3487          ret = EGL_FALSE;
3488       }
3489    }
3490
3491    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3492
3493    return ret;
3494 }
3495
3496 static EGLint
3497 dri2_dup_native_fence_fd(_EGLDisplay *disp, _EGLSync *sync)
3498 {
3499    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3500    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3501
3502    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3503
3504    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3505       /* try to retrieve the actual native fence fd.. if rendering is
3506        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3507        */
3508       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3509                                                    dri2_sync->fence);
3510    }
3511
3512    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3513       /* if native fence fd still not created, return an error: */
3514       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3515       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3516    }
3517
3518    assert(sync_valid_fd(sync->SyncFd));
3519
3520    return os_dupfd_cloexec(sync->SyncFd);
3521 }
3522
3523 static void
3524 dri2_set_blob_cache_funcs(_EGLDisplay *disp,
3525                           EGLSetBlobFuncANDROID set,
3526                           EGLGetBlobFuncANDROID get)
3527 {
3528    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3529    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3530                                    disp->BlobCacheSet,
3531                                    disp->BlobCacheGet);
3532 }
3533
3534 static EGLint
3535 dri2_client_wait_sync(_EGLDisplay *disp, _EGLSync *sync,
3536                       EGLint flags, EGLTime timeout)
3537 {
3538    _EGLContext *ctx = _eglGetCurrentContext();
3539    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3540    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3541    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3542    unsigned wait_flags = 0;
3543
3544    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3545
3546    /* The EGL_KHR_fence_sync spec states:
3547     *
3548     *    "If no context is current for the bound API,
3549     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3550     */
3551    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3552       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3553
3554    /* the sync object should take a reference while waiting */
3555    dri2_egl_ref_sync(dri2_sync);
3556
3557    switch (sync->Type) {
3558    case EGL_SYNC_FENCE_KHR:
3559    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3560    case EGL_SYNC_CL_EVENT_KHR:
3561       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3562                                          dri2_sync->fence, wait_flags,
3563                                          timeout))
3564          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3565       else
3566          ret = EGL_TIMEOUT_EXPIRED_KHR;
3567       break;
3568
3569    case EGL_SYNC_REUSABLE_KHR:
3570       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3571           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3572          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3573          dri2_gl_flush();
3574       }
3575
3576       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3577       if (timeout == EGL_FOREVER_KHR) {
3578          mtx_lock(&dri2_sync->mutex);
3579          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3580          mtx_unlock(&dri2_sync->mutex);
3581       } else {
3582          /* if reusable sync has not been yet signaled */
3583          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3584             /* timespecs for cnd_timedwait */
3585             struct timespec current;
3586             struct timespec expire;
3587
3588             /* We override the clock to monotonic when creating the condition
3589              * variable. */
3590             clock_gettime(CLOCK_MONOTONIC, &current);
3591
3592             /* calculating when to expire */
3593             expire.tv_nsec = timeout % 1000000000L;
3594             expire.tv_sec = timeout / 1000000000L;
3595
3596             expire.tv_nsec += current.tv_nsec;
3597             expire.tv_sec += current.tv_sec;
3598
3599             /* expire.nsec now is a number between 0 and 1999999998 */
3600             if (expire.tv_nsec > 999999999L) {
3601                expire.tv_sec++;
3602                expire.tv_nsec -= 1000000000L;
3603             }
3604
3605             mtx_lock(&dri2_sync->mutex);
3606             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3607             mtx_unlock(&dri2_sync->mutex);
3608
3609             if (ret == thrd_timedout) {
3610                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3611                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3612                } else {
3613                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3614                   ret = EGL_FALSE;
3615                }
3616             }
3617          }
3618       }
3619       break;
3620   }
3621   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3622
3623   return ret;
3624 }
3625
3626 static EGLBoolean
3627 dri2_signal_sync(_EGLDisplay *disp, _EGLSync *sync, EGLenum mode)
3628 {
3629    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3630    EGLint ret;
3631
3632    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3633       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3634
3635    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3636       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3637
3638    dri2_sync->base.SyncStatus = mode;
3639
3640    if (mode == EGL_SIGNALED_KHR) {
3641       ret = cnd_broadcast(&dri2_sync->cond);
3642
3643       /* fail to broadcast */
3644       if (ret)
3645          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3646    }
3647
3648    return EGL_TRUE;
3649 }
3650
3651 static EGLint
3652 dri2_server_wait_sync(_EGLDisplay *disp, _EGLSync *sync)
3653 {
3654    _EGLContext *ctx = _eglGetCurrentContext();
3655    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3656    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3657    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3658
3659    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3660                                      dri2_sync->fence, 0);
3661    return EGL_TRUE;
3662 }
3663
3664 static int
3665 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3666                                struct mesa_glinterop_device_info *out)
3667 {
3668    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3669    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3670
3671    if (!dri2_dpy->interop)
3672       return MESA_GLINTEROP_UNSUPPORTED;
3673
3674    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3675 }
3676
3677 static int
3678 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3679                            struct mesa_glinterop_export_in *in,
3680                            struct mesa_glinterop_export_out *out)
3681 {
3682    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3683    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3684
3685    if (!dri2_dpy->interop)
3686       return MESA_GLINTEROP_UNSUPPORTED;
3687
3688    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3689 }
3690
3691 const _EGLDriver _eglDriver = {
3692    .Initialize = dri2_initialize,
3693    .Terminate = dri2_terminate,
3694    .CreateContext = dri2_create_context,
3695    .DestroyContext = dri2_destroy_context,
3696    .MakeCurrent = dri2_make_current,
3697    .CreateWindowSurface = dri2_create_window_surface,
3698    .CreatePixmapSurface = dri2_create_pixmap_surface,
3699    .CreatePbufferSurface = dri2_create_pbuffer_surface,
3700    .DestroySurface = dri2_destroy_surface,
3701    .GetProcAddress = dri2_get_proc_address,
3702    .WaitClient = dri2_wait_client,
3703    .WaitNative = dri2_wait_native,
3704    .BindTexImage = dri2_bind_tex_image,
3705    .ReleaseTexImage = dri2_release_tex_image,
3706    .SwapInterval = dri2_swap_interval,
3707    .SwapBuffers = dri2_swap_buffers,
3708    .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
3709    .SwapBuffersRegionNOK = dri2_swap_buffers_region,
3710    .SetDamageRegion = dri2_set_damage_region,
3711    .PostSubBufferNV = dri2_post_sub_buffer,
3712    .CopyBuffers = dri2_copy_buffers,
3713    .QueryBufferAge = dri2_query_buffer_age,
3714    .CreateImageKHR = dri2_create_image,
3715    .DestroyImageKHR = dri2_destroy_image_khr,
3716    .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
3717    .QuerySurface = dri2_query_surface,
3718    .QueryDriverName = dri2_query_driver_name,
3719    .QueryDriverConfig = dri2_query_driver_config,
3720 #ifdef HAVE_LIBDRM
3721    .CreateDRMImageMESA = dri2_create_drm_image_mesa,
3722    .ExportDRMImageMESA = dri2_export_drm_image_mesa,
3723    .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
3724    .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
3725    .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
3726    .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
3727 #endif
3728 #ifdef HAVE_WAYLAND_PLATFORM
3729    .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
3730    .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
3731    .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
3732 #endif
3733    .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
3734    .CreateSyncKHR = dri2_create_sync,
3735    .ClientWaitSyncKHR = dri2_client_wait_sync,
3736    .SignalSyncKHR = dri2_signal_sync,
3737    .WaitSyncKHR = dri2_server_wait_sync,
3738    .DestroySyncKHR = dri2_destroy_sync,
3739    .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
3740    .GLInteropExportObject = dri2_interop_export_object,
3741    .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
3742    .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
3743 };