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_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 745    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 746    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 747    { __DRI2_BUFFER_DAMAGE, 1, offsetof(struct dri2_egl_display, buffer_damage) },
 748    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 749    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 750    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 751    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 752    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 753    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 754    { NULL, 0, 0 }
 755 };
 756
 757 static EGLBoolean
 758 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 759                      const struct dri2_extension_match *matches,
 760                      const __DRIextension **extensions,
 761                      bool optional)
 762 {
 763    int ret = EGL_TRUE;
 764    void *field;
 765
 766    for (int i = 0; extensions[i]; i++) {
 767       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 768       for (int j = 0; matches[j].name; j++) {
 769          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 770              extensions[i]->version >= matches[j].version) {
 771             field = ((char *) dri2_dpy + matches[j].offset);
 772             *(const __DRIextension **) field = extensions[i];
 773             _eglLog(_EGL_INFO, "found extension %s version %d",
 774                     extensions[i]->name, extensions[i]->version);
 775             break;
 776          }
 777       }
 778    }
 779
 780    for (int j = 0; matches[j].name; j++) {
 781       field = ((char *) dri2_dpy + matches[j].offset);
 782       if (*(const __DRIextension **) field == NULL) {
 783          if (optional) {
 784             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 785                     matches[j].name, matches[j].version);
 786          } else {
 787             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 788                     matches[j].name, matches[j].version);
 789             ret = EGL_FALSE;
 790          }
 791       }
 792    }
 793
 794    return ret;
 795 }
 796
 797 static const __DRIextension **
 798 dri2_open_driver(_EGLDisplay *disp)
 799 {
 800    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 801    static const char *search_path_vars[] = {
 802       "LIBGL_DRIVERS_PATH",
 803       NULL,
 804    };
 805
 806    return loader_open_driver(dri2_dpy->driver_name,
 807                              &dri2_dpy->driver,
 808                              search_path_vars);
 809 }
 810
 811 static EGLBoolean
 812 dri2_load_driver_common(_EGLDisplay *disp,
 813                         const struct dri2_extension_match *driver_extensions)
 814 {
 815    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 816    const __DRIextension **extensions;
 817
 818    extensions = dri2_open_driver(disp);
 819    if (!extensions)
 820       return EGL_FALSE;
 821
 822    if (!dri2_bind_extensions(dri2_dpy, driver_extensions, extensions, false)) {
 823       dlclose(dri2_dpy->driver);
 824       dri2_dpy->driver = NULL;
 825       return EGL_FALSE;
 826    }
 827    dri2_dpy->driver_extensions = extensions;
 828
 829    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 830
 831    return EGL_TRUE;
 832 }
 833
 834 EGLBoolean
 835 dri2_load_driver(_EGLDisplay *disp)
 836 {
 837    return dri2_load_driver_common(disp, dri2_driver_extensions);
 838 }
 839
 840 EGLBoolean
 841 dri2_load_driver_dri3(_EGLDisplay *disp)
 842 {
 843    return dri2_load_driver_common(disp, dri3_driver_extensions);
 844 }
 845
 846 EGLBoolean
 847 dri2_load_driver_swrast(_EGLDisplay *disp)
 848 {
 849    return dri2_load_driver_common(disp, swrast_driver_extensions);
 850 }
 851
 852 static unsigned
 853 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 854 {
 855    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 856    unsigned int value = 0;
 857
 858    if (!rendererQuery ||
 859        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 860       return 0;
 861
 862    return value;
 863 }
 864
 865 static const char *
 866 dri2_query_driver_name(_EGLDisplay *disp)
 867 {
 868     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 869     return dri2_dpy->driver_name;
 870 }
 871
 872 static char *
 873 dri2_query_driver_config(_EGLDisplay *disp)
 874 {
 875     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 876     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
 877
 878     if (ext->base.version >= 2)
 879         return ext->getXml(dri2_dpy->driver_name);
 880
 881     return strdup(ext->xml);
 882 }
 883
 884
 885 void
 886 dri2_setup_screen(_EGLDisplay *disp)
 887 {
 888    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 889    unsigned int api_mask;
 890
 891    /*
 892     * EGL 1.5 specification defines the default value to 1. Moreover,
 893     * eglSwapInterval() is required to clamp requested value to the supported
 894     * range. Since the default value is implicitly assumed to be supported,
 895     * use it as both minimum and maximum for the platforms that do not allow
 896     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 897     * override these values already.
 898     */
 899    dri2_dpy->min_swap_interval = 1;
 900    dri2_dpy->max_swap_interval = 1;
 901    dri2_dpy->default_swap_interval = 1;
 902
 903    if (dri2_dpy->image_driver) {
 904       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 905    } else if (dri2_dpy->dri2) {
 906       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 907    } else {
 908       assert(dri2_dpy->swrast);
 909       api_mask = 1 << __DRI_API_OPENGL |
 910                  1 << __DRI_API_GLES |
 911                  1 << __DRI_API_GLES2 |
 912                  1 << __DRI_API_GLES3;
 913    }
 914
 915    disp->ClientAPIs = 0;
 916    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 917       disp->ClientAPIs |= EGL_OPENGL_BIT;
 918    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 919       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 920    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 921       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 922    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 923       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 924
 925    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 926    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 927    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 928
 929    if (dri2_dpy->configOptions) {
 930        disp->Extensions.MESA_query_driver = EGL_TRUE;
 931    }
 932
 933    /* Report back to EGL the bitmask of priorities supported */
 934    disp->Extensions.IMG_context_priority =
 935       dri2_renderer_query_integer(dri2_dpy,
 936                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 937
 938    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 939
 940    if (dri2_renderer_query_integer(dri2_dpy,
 941                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 942       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 943
 944    if (dri2_dpy->image_driver ||
 945        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 946        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 947       disp->Extensions.KHR_create_context = EGL_TRUE;
 948
 949       if (dri2_dpy->robustness)
 950          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 951    }
 952
 953    if (dri2_dpy->no_error)
 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 || dri2_ctx->base.NoError) {
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          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1425    }
1426
1427    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1428       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1429        * extension, don't even try to send it a reset strategy.  It may
1430        * explode.  Instead, generate the required EGL error here.
1431        */
1432       if (!dri2_dpy->robustness) {
1433          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1434          return false;
1435       }
1436
1437       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1438       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1439    }
1440
1441    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1442       unsigned val;
1443
1444       switch (dri2_ctx->base.ContextPriority) {
1445       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1446          val = __DRI_CTX_PRIORITY_HIGH;
1447          break;
1448       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1449          val = __DRI_CTX_PRIORITY_MEDIUM;
1450          break;
1451       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1452          val = __DRI_CTX_PRIORITY_LOW;
1453          break;
1454       default:
1455          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1456          return false;
1457       }
1458
1459       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1460       ctx_attribs[pos++] = val;
1461    }
1462
1463    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1464       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1465       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1466    }
1467
1468    *num_attribs = pos;
1469
1470    return true;
1471 }
1472
1473 /**
1474  * Called via eglCreateContext(), drv->CreateContext().
1475  */
1476 static _EGLContext *
1477 dri2_create_context(_EGLDisplay *disp, _EGLConfig *conf,
1478                     _EGLContext *share_list, const EGLint *attrib_list)
1479 {
1480    struct dri2_egl_context *dri2_ctx;
1481    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1482    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1483    __DRIcontext *shared =
1484       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1485    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1486    const __DRIconfig *dri_config;
1487    int api;
1488    unsigned error;
1489    unsigned num_attribs = NUM_ATTRIBS;
1490    uint32_t ctx_attribs[NUM_ATTRIBS];
1491
1492    dri2_ctx = malloc(sizeof *dri2_ctx);
1493    if (!dri2_ctx) {
1494       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1495       return NULL;
1496    }
1497
1498    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1499       goto cleanup;
1500
1501    /* The EGL_EXT_create_context_robustness spec says:
1502     *
1503     *    "Add to the eglCreateContext context creation errors: [...]
1504     *
1505     *     * If the reset notification behavior of <share_context> and the
1506     *       newly created context are different then an EGL_BAD_MATCH error is
1507     *       generated."
1508     */
1509    if (share_list && share_list->ResetNotificationStrategy !=
1510                      dri2_ctx->base.ResetNotificationStrategy) {
1511       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1512       goto cleanup;
1513    }
1514
1515    /* The EGL_KHR_create_context_no_error spec says:
1516     *
1517     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1518     *    used to create <share_context> does not match the value of
1519     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1520     */
1521    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1522       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1523       goto cleanup;
1524    }
1525
1526    switch (dri2_ctx->base.ClientAPI) {
1527    case EGL_OPENGL_ES_API:
1528       switch (dri2_ctx->base.ClientMajorVersion) {
1529       case 1:
1530          api = __DRI_API_GLES;
1531          break;
1532       case 2:
1533          api = __DRI_API_GLES2;
1534          break;
1535       case 3:
1536          api = __DRI_API_GLES3;
1537          break;
1538       default:
1539          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1540          free(dri2_ctx);
1541          return NULL;
1542       }
1543       break;
1544    case EGL_OPENGL_API:
1545       if ((dri2_ctx->base.ClientMajorVersion >= 4
1546            || (dri2_ctx->base.ClientMajorVersion == 3
1547                && dri2_ctx->base.ClientMinorVersion >= 2))
1548           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1549          api = __DRI_API_OPENGL_CORE;
1550       else if (dri2_ctx->base.ClientMajorVersion == 3 &&
1551                dri2_ctx->base.ClientMinorVersion == 1)
1552          api = __DRI_API_OPENGL_CORE;
1553       else
1554          api = __DRI_API_OPENGL;
1555       break;
1556    default:
1557       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1558       free(dri2_ctx);
1559       return NULL;
1560    }
1561
1562    if (conf != NULL) {
1563       /* The config chosen here isn't necessarily
1564        * used for surfaces later.
1565        * A pixmap surface will use the single config.
1566        * This opportunity depends on disabling the
1567        * doubleBufferMode check in
1568        * src/mesa/main/context.c:check_compatible()
1569        */
1570       if (dri2_config->dri_config[1][0])
1571          dri_config = dri2_config->dri_config[1][0];
1572       else
1573          dri_config = dri2_config->dri_config[0][0];
1574    }
1575    else
1576       dri_config = NULL;
1577
1578    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1579                                   &num_attribs))
1580       goto cleanup;
1581
1582    if (dri2_dpy->image_driver) {
1583       dri2_ctx->dri_context =
1584          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1585                                                       api,
1586                                                       dri_config,
1587                                                       shared,
1588                                                       num_attribs / 2,
1589                                                       ctx_attribs,
1590                                                       & error,
1591                                                       dri2_ctx);
1592       dri2_create_context_attribs_error(error);
1593    } else if (dri2_dpy->dri2) {
1594       if (dri2_dpy->dri2->base.version >= 3) {
1595          dri2_ctx->dri_context =
1596             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1597                                                  api,
1598                                                  dri_config,
1599                                                  shared,
1600                                                  num_attribs / 2,
1601                                                  ctx_attribs,
1602                                                  & error,
1603                                                  dri2_ctx);
1604          dri2_create_context_attribs_error(error);
1605       } else {
1606          dri2_ctx->dri_context =
1607             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1608                                                    api,
1609                                                    dri_config,
1610                                                    shared,
1611                                                    dri2_ctx);
1612       }
1613    } else {
1614       assert(dri2_dpy->swrast);
1615       if (dri2_dpy->swrast->base.version >= 3) {
1616          dri2_ctx->dri_context =
1617             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1618                                                    api,
1619                                                    dri_config,
1620                                                    shared,
1621                                                    num_attribs / 2,
1622                                                    ctx_attribs,
1623                                                    & error,
1624                                                    dri2_ctx);
1625          dri2_create_context_attribs_error(error);
1626       } else {
1627          dri2_ctx->dri_context =
1628             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1629                                                      api,
1630                                                      dri_config,
1631                                                      shared,
1632                                                      dri2_ctx);
1633       }
1634    }
1635
1636    if (!dri2_ctx->dri_context)
1637       goto cleanup;
1638
1639    return &dri2_ctx->base;
1640
1641  cleanup:
1642    free(dri2_ctx);
1643    return NULL;
1644 }
1645
1646 /**
1647  * Called via eglDestroyContext(), drv->DestroyContext().
1648  */
1649 static EGLBoolean
1650 dri2_destroy_context(_EGLDisplay *disp, _EGLContext *ctx)
1651 {
1652    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1653    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1654
1655    if (_eglPutContext(ctx)) {
1656       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1657       free(dri2_ctx);
1658    }
1659
1660    return EGL_TRUE;
1661 }
1662
1663 EGLBoolean
1664 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1665         _EGLConfig *conf, const EGLint *attrib_list,
1666         EGLBoolean enable_out_fence, void *native_surface)
1667 {
1668    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1669    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1670
1671    dri2_surf->out_fence_fd = -1;
1672    dri2_surf->enable_out_fence = false;
1673    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1674        dri2_dpy->fence->get_capabilities &&
1675        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1676         __DRI_FENCE_CAP_NATIVE_FD)) {
1677       dri2_surf->enable_out_fence = enable_out_fence;
1678    }
1679
1680    return _eglInitSurface(surf, disp, type, conf, attrib_list, native_surface);
1681 }
1682
1683 static void
1684 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1685 {
1686    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1687
1688    if (dri2_surf->out_fence_fd >= 0)
1689       close(dri2_surf->out_fence_fd);
1690
1691    dri2_surf->out_fence_fd = fence_fd;
1692 }
1693
1694 void
1695 dri2_fini_surface(_EGLSurface *surf)
1696 {
1697    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1698
1699    dri2_surface_set_out_fence_fd(surf, -1);
1700    dri2_surf->enable_out_fence = false;
1701 }
1702
1703 static EGLBoolean
1704 dri2_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
1705 {
1706    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1707
1708    if (!_eglPutSurface(surf))
1709       return EGL_TRUE;
1710
1711    return dri2_dpy->vtbl->destroy_surface(disp, surf);
1712 }
1713
1714 static void
1715 dri2_surf_update_fence_fd(_EGLContext *ctx,
1716                           _EGLDisplay *disp, _EGLSurface *surf)
1717 {
1718    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1719    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1720    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1721    int fence_fd = -1;
1722    void *fence;
1723
1724    if (!dri2_surf->enable_out_fence)
1725       return;
1726
1727    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1728    if (fence) {
1729       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1730                                                fence);
1731       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1732    }
1733    dri2_surface_set_out_fence_fd(surf, fence_fd);
1734 }
1735
1736 EGLBoolean
1737 dri2_create_drawable(struct dri2_egl_display *dri2_dpy,
1738                      const __DRIconfig *config,
1739                      struct dri2_egl_surface *dri2_surf,
1740                      void *loaderPrivate)
1741 {
1742    __DRIcreateNewDrawableFunc createNewDrawable;
1743
1744    if (dri2_dpy->image_driver)
1745       createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
1746    else if (dri2_dpy->dri2)
1747       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
1748    else if (dri2_dpy->swrast)
1749       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
1750    else
1751       return _eglError(EGL_BAD_ALLOC, "no createNewDrawable");
1752
1753    dri2_surf->dri_drawable = createNewDrawable(dri2_dpy->dri_screen,
1754                                                config, loaderPrivate);
1755    if (dri2_surf->dri_drawable == NULL)
1756       return _eglError(EGL_BAD_ALLOC, "createNewDrawable");
1757
1758    return EGL_TRUE;
1759 }
1760
1761 /**
1762  * Called via eglMakeCurrent(), drv->MakeCurrent().
1763  */
1764 static EGLBoolean
1765 dri2_make_current(_EGLDisplay *disp, _EGLSurface *dsurf,
1766                   _EGLSurface *rsurf, _EGLContext *ctx)
1767 {
1768    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1769    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1770    _EGLDisplay *old_disp = NULL;
1771    struct dri2_egl_display *old_dri2_dpy = NULL;
1772    _EGLContext *old_ctx;
1773    _EGLSurface *old_dsurf, *old_rsurf;
1774    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1775    __DRIdrawable *ddraw, *rdraw;
1776    __DRIcontext *cctx;
1777    EGLint egl_error = EGL_SUCCESS;
1778
1779    if (!dri2_dpy)
1780       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1781
1782    /* make new bindings, set the EGL error otherwise */
1783    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
1784       return EGL_FALSE;
1785
1786    if (old_ctx == ctx && old_dsurf == dsurf && old_rsurf == rsurf) {
1787       _eglPutSurface(old_dsurf);
1788       _eglPutSurface(old_rsurf);
1789       _eglPutContext(old_ctx);
1790       return EGL_TRUE;
1791    }
1792
1793    if (old_ctx) {
1794       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1795       old_disp = old_ctx->Resource.Display;
1796       old_dri2_dpy = dri2_egl_display(old_disp);
1797
1798       /* Disable shared buffer mode */
1799       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1800           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1801          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1802       }
1803
1804       dri2_dpy->core->unbindContext(old_cctx);
1805
1806       if (old_dsurf)
1807          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1808    }
1809
1810    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1811    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1812    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1813
1814    if (cctx || ddraw || rdraw) {
1815       if (!dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1816          _EGLContext *tmp_ctx;
1817
1818          /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1819           * setting the error to EGL_BAD_MATCH is surely better than leaving it
1820           * as EGL_SUCCESS.
1821           */
1822          egl_error = EGL_BAD_MATCH;
1823
1824          /* undo the previous _eglBindContext */
1825          _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1826          assert(&dri2_ctx->base == ctx &&
1827                 tmp_dsurf == dsurf &&
1828                 tmp_rsurf == rsurf);
1829
1830          _eglPutSurface(dsurf);
1831          _eglPutSurface(rsurf);
1832          _eglPutContext(ctx);
1833
1834          _eglPutSurface(old_dsurf);
1835          _eglPutSurface(old_rsurf);
1836          _eglPutContext(old_ctx);
1837
1838          ddraw = (old_dsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_dsurf) : NULL;
1839          rdraw = (old_rsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_rsurf) : NULL;
1840          cctx = (old_ctx) ? dri2_egl_context(old_ctx)->dri_context : NULL;
1841
1842          /* undo the previous dri2_dpy->core->unbindContext */
1843          if (dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1844             if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1845                 old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1846                old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1847             }
1848
1849             return _eglError(egl_error, "eglMakeCurrent");
1850          }
1851
1852          /* We cannot restore the same state as it was before calling
1853           * eglMakeCurrent() and the spec isn't clear about what to do. We
1854           * can prevent EGL from calling into the DRI driver with no DRI
1855           * context bound.
1856           */
1857          dsurf = rsurf = NULL;
1858          ctx = NULL;
1859
1860          _eglBindContext(ctx, dsurf, rsurf, &tmp_ctx, &tmp_dsurf, &tmp_rsurf);
1861          assert(tmp_ctx == old_ctx && tmp_dsurf == old_dsurf &&
1862                 tmp_rsurf == old_rsurf);
1863
1864          _eglLog(_EGL_WARNING, "DRI2: failed to rebind the previous context");
1865       } else {
1866          /* dri2_dpy->core->bindContext succeeded, so take a reference on the
1867           * dri2_dpy. This prevents dri2_dpy from being reinitialized when a
1868           * EGLDisplay is terminated and then initialized again while a
1869           * context is still bound. See dri2_intitialize() for a more in depth
1870           * explanation. */
1871          dri2_dpy->ref_count++;
1872       }
1873    }
1874
1875    dri2_destroy_surface(disp, old_dsurf);
1876    dri2_destroy_surface(disp, old_rsurf);
1877
1878    if (old_ctx) {
1879       dri2_destroy_context(disp, old_ctx);
1880       dri2_display_release(old_disp);
1881    }
1882
1883    if (egl_error != EGL_SUCCESS)
1884       return _eglError(egl_error, "eglMakeCurrent");
1885
1886    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1887        dri2_dpy->vtbl->set_shared_buffer_mode) {
1888       /* Always update the shared buffer mode. This is obviously needed when
1889        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1890        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1891        * case where external non-EGL API may have changed window's shared
1892        * buffer mode since we last saw it.
1893        */
1894       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1895       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1896    }
1897
1898    return EGL_TRUE;
1899 }
1900
1901 __DRIdrawable *
1902 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1903 {
1904    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1905
1906    return dri2_surf->dri_drawable;
1907 }
1908
1909 /*
1910  * Called from eglGetProcAddress() via drv->GetProcAddress().
1911  */
1912 static _EGLProc
1913 dri2_get_proc_address(const char *procname)
1914 {
1915    return _glapi_get_proc_address(procname);
1916 }
1917
1918 static _EGLSurface*
1919 dri2_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
1920                            void *native_window, const EGLint *attrib_list)
1921 {
1922    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1923    return dri2_dpy->vtbl->create_window_surface(disp, conf, native_window,
1924                                                 attrib_list);
1925 }
1926
1927 static _EGLSurface*
1928 dri2_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
1929                            void *native_pixmap, const EGLint *attrib_list)
1930 {
1931    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1932    if (!dri2_dpy->vtbl->create_pixmap_surface)
1933       return NULL;
1934    return dri2_dpy->vtbl->create_pixmap_surface(disp, conf, native_pixmap,
1935                                                 attrib_list);
1936 }
1937
1938 static _EGLSurface*
1939 dri2_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
1940                             const EGLint *attrib_list)
1941 {
1942    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1943    if (!dri2_dpy->vtbl->create_pbuffer_surface)
1944       return NULL;
1945    return dri2_dpy->vtbl->create_pbuffer_surface(disp, conf, attrib_list);
1946 }
1947
1948 static EGLBoolean
1949 dri2_swap_interval(_EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
1950 {
1951    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1952    if (!dri2_dpy->vtbl->swap_interval)
1953       return EGL_TRUE;
1954    return dri2_dpy->vtbl->swap_interval(disp, surf, interval);
1955 }
1956
1957 /**
1958  * Asks the client API to flush any rendering to the drawable so that we can
1959  * do our swapbuffers.
1960  */
1961 void
1962 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1963 {
1964    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1965    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1966
1967    if (dri2_dpy->flush) {
1968       if (dri2_dpy->flush->base.version >= 4) {
1969          /* We know there's a current context because:
1970           *
1971           *     "If surface is not bound to the calling thread’s current
1972           *      context, an EGL_BAD_SURFACE error is generated."
1973          */
1974          _EGLContext *ctx = _eglGetCurrentContext();
1975          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1976
1977          /* From the EGL 1.4 spec (page 52):
1978           *
1979           *     "The contents of ancillary buffers are always undefined
1980           *      after calling eglSwapBuffers."
1981           */
1982          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1983                                            dri_drawable,
1984                                            __DRI2_FLUSH_DRAWABLE |
1985                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1986                                            __DRI2_THROTTLE_SWAPBUFFER);
1987       } else {
1988          dri2_dpy->flush->flush(dri_drawable);
1989       }
1990    }
1991 }
1992
1993 static EGLBoolean
1994 dri2_swap_buffers(_EGLDisplay *disp, _EGLSurface *surf)
1995 {
1996    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1997    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1998    _EGLContext *ctx = _eglGetCurrentContext();
1999    EGLBoolean ret;
2000
2001    if (ctx && surf)
2002       dri2_surf_update_fence_fd(ctx, disp, surf);
2003    ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2004
2005    /* SwapBuffers marks the end of the frame; reset the damage region for
2006     * use again next time.
2007     */
2008    if (ret && dri2_dpy->buffer_damage &&
2009        dri2_dpy->buffer_damage->set_damage_region)
2010       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2011
2012    return ret;
2013 }
2014
2015 static EGLBoolean
2016 dri2_swap_buffers_with_damage(_EGLDisplay *disp, _EGLSurface *surf,
2017                               const EGLint *rects, EGLint n_rects)
2018 {
2019    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2020    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2021    _EGLContext *ctx = _eglGetCurrentContext();
2022    EGLBoolean ret;
2023
2024    if (ctx && surf)
2025       dri2_surf_update_fence_fd(ctx, disp, surf);
2026    if (dri2_dpy->vtbl->swap_buffers_with_damage)
2027       ret = dri2_dpy->vtbl->swap_buffers_with_damage(disp, surf,
2028                                                      rects, n_rects);
2029    else
2030       ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2031
2032    /* SwapBuffers marks the end of the frame; reset the damage region for
2033     * use again next time.
2034     */
2035    if (ret && dri2_dpy->buffer_damage &&
2036        dri2_dpy->buffer_damage->set_damage_region)
2037       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2038
2039    return ret;
2040 }
2041
2042 static EGLBoolean
2043 dri2_swap_buffers_region(_EGLDisplay *disp, _EGLSurface *surf,
2044                          EGLint numRects, const EGLint *rects)
2045 {
2046    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2047    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2048    EGLBoolean ret;
2049
2050    if (!dri2_dpy->vtbl->swap_buffers_region)
2051       return EGL_FALSE;
2052    ret = dri2_dpy->vtbl->swap_buffers_region(disp, surf, numRects, rects);
2053
2054    /* SwapBuffers marks the end of the frame; reset the damage region for
2055     * use again next time.
2056     */
2057    if (ret && dri2_dpy->buffer_damage &&
2058        dri2_dpy->buffer_damage->set_damage_region)
2059       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2060
2061    return ret;
2062 }
2063
2064 static EGLBoolean
2065 dri2_set_damage_region(_EGLDisplay *disp, _EGLSurface *surf,
2066                        EGLint *rects, EGLint n_rects)
2067 {
2068    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2069    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2070
2071    if (!dri2_dpy->buffer_damage || !dri2_dpy->buffer_damage->set_damage_region)
2072       return EGL_FALSE;
2073
2074    dri2_dpy->buffer_damage->set_damage_region(drawable, n_rects, rects);
2075    return EGL_TRUE;
2076 }
2077
2078 static EGLBoolean
2079 dri2_post_sub_buffer(_EGLDisplay *disp, _EGLSurface *surf,
2080                      EGLint x, EGLint y, EGLint width, EGLint height)
2081 {
2082    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2083    if (!dri2_dpy->vtbl->post_sub_buffer)
2084       return EGL_FALSE;
2085    return dri2_dpy->vtbl->post_sub_buffer(disp, surf, x, y, width, height);
2086 }
2087
2088 static EGLBoolean
2089 dri2_copy_buffers(_EGLDisplay *disp, _EGLSurface *surf, void *native_pixmap_target)
2090 {
2091    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2092    if (!dri2_dpy->vtbl->copy_buffers)
2093       return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
2094    return dri2_dpy->vtbl->copy_buffers(disp, surf, native_pixmap_target);
2095 }
2096
2097 static EGLint
2098 dri2_query_buffer_age(_EGLDisplay *disp, _EGLSurface *surf)
2099 {
2100    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2101    if (!dri2_dpy->vtbl->query_buffer_age)
2102       return 0;
2103    return dri2_dpy->vtbl->query_buffer_age(disp, surf);
2104 }
2105
2106 static EGLBoolean
2107 dri2_wait_client(_EGLDisplay *disp, _EGLContext *ctx)
2108 {
2109    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2110    _EGLSurface *surf = ctx->DrawSurface;
2111    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2112
2113    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
2114     * we need to copy fake to real here.*/
2115
2116    if (dri2_dpy->flush != NULL)
2117       dri2_dpy->flush->flush(dri_drawable);
2118
2119    return EGL_TRUE;
2120 }
2121
2122 static EGLBoolean
2123 dri2_wait_native(EGLint engine)
2124 {
2125    if (engine != EGL_CORE_NATIVE_ENGINE)
2126       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
2127    /* glXWaitX(); */
2128
2129    return EGL_TRUE;
2130 }
2131
2132 static EGLBoolean
2133 dri2_bind_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2134 {
2135    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2136    struct dri2_egl_context *dri2_ctx;
2137    _EGLContext *ctx;
2138    GLint format, target;
2139    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2140
2141    ctx = _eglGetCurrentContext();
2142    dri2_ctx = dri2_egl_context(ctx);
2143
2144    if (!_eglBindTexImage(disp, surf, buffer))
2145       return EGL_FALSE;
2146
2147    switch (surf->TextureFormat) {
2148    case EGL_TEXTURE_RGB:
2149       format = __DRI_TEXTURE_FORMAT_RGB;
2150       break;
2151    case EGL_TEXTURE_RGBA:
2152       format = __DRI_TEXTURE_FORMAT_RGBA;
2153       break;
2154    default:
2155       assert(!"Unexpected texture format in dri2_bind_tex_image()");
2156       format = __DRI_TEXTURE_FORMAT_RGBA;
2157    }
2158
2159    switch (surf->TextureTarget) {
2160    case EGL_TEXTURE_2D:
2161       target = GL_TEXTURE_2D;
2162       break;
2163    default:
2164       target = GL_TEXTURE_2D;
2165       assert(!"Unexpected texture target in dri2_bind_tex_image()");
2166    }
2167
2168    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
2169                                        target, format,
2170                                        dri_drawable);
2171
2172    return EGL_TRUE;
2173 }
2174
2175 static EGLBoolean
2176 dri2_release_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2177 {
2178    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2179    struct dri2_egl_context *dri2_ctx;
2180    _EGLContext *ctx;
2181    GLint  target;
2182    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2183
2184    ctx = _eglGetCurrentContext();
2185    dri2_ctx = dri2_egl_context(ctx);
2186
2187    if (!_eglReleaseTexImage(disp, surf, buffer))
2188       return EGL_FALSE;
2189
2190    switch (surf->TextureTarget) {
2191    case EGL_TEXTURE_2D:
2192       target = GL_TEXTURE_2D;
2193       break;
2194    default:
2195       assert(!"missing texture target");
2196    }
2197
2198    if (dri2_dpy->tex_buffer->base.version >= 3 &&
2199        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
2200       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
2201                                              target, dri_drawable);
2202    }
2203
2204    return EGL_TRUE;
2205 }
2206
2207 static _EGLImage*
2208 dri2_create_image(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
2209                   EGLClientBuffer buffer, const EGLint *attr_list)
2210 {
2211    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2212    return dri2_dpy->vtbl->create_image(disp, ctx, target, buffer,
2213                                        attr_list);
2214 }
2215
2216 _EGLImage *
2217 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
2218 {
2219    struct dri2_egl_image *dri2_img;
2220
2221    if (dri_image == NULL) {
2222       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2223       return NULL;
2224    }
2225
2226    dri2_img = malloc(sizeof *dri2_img);
2227    if (!dri2_img) {
2228       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2229       return NULL;
2230    }
2231
2232    _eglInitImage(&dri2_img->base, disp);
2233
2234    dri2_img->dri_image = dri_image;
2235
2236    return &dri2_img->base;
2237 }
2238
2239 /**
2240  * Translate a DRI Image extension error code into an EGL error code.
2241  */
2242 static EGLint
2243 egl_error_from_dri_image_error(int dri_error)
2244 {
2245    switch (dri_error) {
2246    case __DRI_IMAGE_ERROR_SUCCESS:
2247       return EGL_SUCCESS;
2248    case __DRI_IMAGE_ERROR_BAD_ALLOC:
2249       return EGL_BAD_ALLOC;
2250    case __DRI_IMAGE_ERROR_BAD_MATCH:
2251       return EGL_BAD_MATCH;
2252    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
2253       return EGL_BAD_PARAMETER;
2254    case __DRI_IMAGE_ERROR_BAD_ACCESS:
2255       return EGL_BAD_ACCESS;
2256    default:
2257       assert(!"unknown dri_error code");
2258       return EGL_BAD_ALLOC;
2259    }
2260 }
2261
2262 static _EGLImage *
2263 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
2264                                    EGLClientBuffer buffer,
2265                                    const EGLint *attr_list)
2266 {
2267    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2268    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2269    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
2270    __DRIimage *dri_image;
2271
2272    if (renderbuffer == 0) {
2273       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2274       return EGL_NO_IMAGE_KHR;
2275    }
2276
2277    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
2278       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2279       return EGL_NO_IMAGE_KHR;
2280    }
2281
2282    if (dri2_dpy->image->base.version >= 17 &&
2283        dri2_dpy->image->createImageFromRenderbuffer2) {
2284       unsigned error = ~0;
2285
2286       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
2287                dri2_ctx->dri_context, renderbuffer, NULL, &error);
2288
2289       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
2290
2291       if (!dri_image) {
2292          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
2293          return EGL_NO_IMAGE_KHR;
2294       }
2295    } else {
2296       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
2297                dri2_ctx->dri_context, renderbuffer, NULL);
2298       if (!dri_image) {
2299          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2300          return EGL_NO_IMAGE_KHR;
2301       }
2302    }
2303
2304    return dri2_create_image_from_dri(disp, dri_image);
2305 }
2306
2307 #ifdef HAVE_WAYLAND_PLATFORM
2308
2309 /* This structure describes how a wl_buffer maps to one or more
2310  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
2311  * offsets and strides of the planes in the buffer.  This table maps a
2312  * wl_drm format code to a description of the planes in the buffer
2313  * that lets us create a __DRIimage for each of the planes. */
2314
2315 static const struct wl_drm_components_descriptor {
2316    uint32_t dri_components;
2317    EGLint components;
2318    int nplanes;
2319 } wl_drm_components[] = {
2320    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
2321    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
2322    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
2323    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
2324    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
2325 };
2326
2327 static _EGLImage *
2328 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2329                                     EGLClientBuffer _buffer,
2330                                     const EGLint *attr_list)
2331 {
2332    struct wl_drm_buffer *buffer;
2333    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2334    const struct wl_drm_components_descriptor *f;
2335    __DRIimage *dri_image;
2336    _EGLImageAttribs attrs;
2337    int32_t plane;
2338
2339    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
2340                                    (struct wl_resource *) _buffer);
2341    if (!buffer)
2342        return NULL;
2343
2344    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2345       return NULL;
2346
2347    plane = attrs.PlaneWL;
2348    f = buffer->driver_format;
2349    if (plane < 0 || plane >= f->nplanes) {
2350       _eglError(EGL_BAD_PARAMETER,
2351                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2352       return NULL;
2353    }
2354
2355    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2356    if (dri_image == NULL && plane == 0)
2357       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
2358    if (dri_image == NULL) {
2359       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2360       return NULL;
2361    }
2362
2363    return dri2_create_image_from_dri(disp, dri_image);
2364 }
2365 #endif
2366
2367 static EGLBoolean
2368 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
2369                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2370                               EGLuint64KHR *sbc)
2371 {
2372    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2373    if (!dri2_dpy->vtbl->get_sync_values)
2374       return EGL_FALSE;
2375    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
2376 }
2377
2378 /**
2379  * Set the error code after a call to
2380  * dri2_egl_image::dri_image::createImageFromTexture.
2381  */
2382 static void
2383 dri2_create_image_khr_texture_error(int dri_error)
2384 {
2385    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2386
2387    if (egl_error != EGL_SUCCESS)
2388       _eglError(egl_error, "dri2_create_image_khr_texture");
2389 }
2390
2391 static _EGLImage *
2392 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2393                                    EGLenum target,
2394                                    EGLClientBuffer buffer,
2395                                    const EGLint *attr_list)
2396 {
2397    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2398    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2399    struct dri2_egl_image *dri2_img;
2400    GLuint texture = (GLuint) (uintptr_t) buffer;
2401    _EGLImageAttribs attrs;
2402    GLuint depth;
2403    GLenum gl_target;
2404    unsigned error;
2405
2406    if (texture == 0) {
2407       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2408       return EGL_NO_IMAGE_KHR;
2409    }
2410
2411    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2412       return EGL_NO_IMAGE_KHR;
2413
2414    switch (target) {
2415    case EGL_GL_TEXTURE_2D_KHR:
2416       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2417          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2418          return EGL_NO_IMAGE_KHR;
2419       }
2420       depth = 0;
2421       gl_target = GL_TEXTURE_2D;
2422       break;
2423    case EGL_GL_TEXTURE_3D_KHR:
2424       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2425          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2426          return EGL_NO_IMAGE_KHR;
2427       }
2428
2429       depth = attrs.GLTextureZOffset;
2430       gl_target = GL_TEXTURE_3D;
2431       break;
2432    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2433    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2434    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2435    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2436    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2437    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2438       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2439          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2440          return EGL_NO_IMAGE_KHR;
2441       }
2442
2443       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2444       gl_target = GL_TEXTURE_CUBE_MAP;
2445       break;
2446    default:
2447       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2448       return EGL_NO_IMAGE_KHR;
2449    }
2450
2451    dri2_img = malloc(sizeof *dri2_img);
2452    if (!dri2_img) {
2453       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2454       return EGL_NO_IMAGE_KHR;
2455    }
2456
2457    _eglInitImage(&dri2_img->base, disp);
2458
2459    dri2_img->dri_image =
2460       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2461                                               gl_target,
2462                                               texture,
2463                                               depth,
2464                                               attrs.GLTextureLevel,
2465                                               &error,
2466                                               NULL);
2467    dri2_create_image_khr_texture_error(error);
2468
2469    if (!dri2_img->dri_image) {
2470       free(dri2_img);
2471       return EGL_NO_IMAGE_KHR;
2472    }
2473    return &dri2_img->base;
2474 }
2475
2476 static EGLBoolean
2477 dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
2478                    EGLint attribute, EGLint *value)
2479 {
2480    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2481    if (!dri2_dpy->vtbl->query_surface)
2482       return _eglQuerySurface(disp, surf, attribute, value);
2483    return dri2_dpy->vtbl->query_surface(disp, surf, attribute, value);
2484 }
2485
2486 static struct wl_buffer*
2487 dri2_create_wayland_buffer_from_image(_EGLDisplay *disp, _EGLImage *img)
2488 {
2489    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2490    if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
2491       return NULL;
2492    return dri2_dpy->vtbl->create_wayland_buffer_from_image(disp, img);
2493 }
2494
2495 #ifdef HAVE_LIBDRM
2496 static _EGLImage *
2497 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2498                                   EGLClientBuffer buffer, const EGLint *attr_list)
2499 {
2500    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2501    EGLint format, name, pitch;
2502    _EGLImageAttribs attrs;
2503    __DRIimage *dri_image;
2504
2505    name = (EGLint) (uintptr_t) buffer;
2506
2507    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2508       return NULL;
2509
2510    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2511        attrs.DRMBufferStrideMESA <= 0) {
2512       _eglError(EGL_BAD_PARAMETER,
2513                 "bad width, height or stride");
2514       return NULL;
2515    }
2516
2517    switch (attrs.DRMBufferFormatMESA) {
2518    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2519       format = __DRI_IMAGE_FORMAT_ARGB8888;
2520       pitch = attrs.DRMBufferStrideMESA;
2521       break;
2522    default:
2523       _eglError(EGL_BAD_PARAMETER,
2524                 "dri2_create_image_khr: unsupported pixmap depth");
2525       return NULL;
2526    }
2527
2528    dri_image =
2529       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2530                                            attrs.Width,
2531                                            attrs.Height,
2532                                            format,
2533                                            name,
2534                                            pitch,
2535                                            NULL);
2536
2537    return dri2_create_image_from_dri(disp, dri_image);
2538 }
2539
2540 static EGLBoolean
2541 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2542 {
2543    /**
2544      * The spec says:
2545      *
2546      * "Required attributes and their values are as follows:
2547      *
2548      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2549      *
2550      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2551      *    by drm_fourcc.h and used as the pixel_format parameter of the
2552      *    drm_mode_fb_cmd2 ioctl."
2553      *
2554      * and
2555      *
2556      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2557      *    incomplete, EGL_BAD_PARAMETER is generated."
2558      */
2559    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2560        !attrs->DMABufFourCC.IsPresent)
2561       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2562
2563    /**
2564     * Also:
2565     *
2566     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2567     *  specified for a plane's pitch or offset isn't supported by EGL,
2568     *  EGL_BAD_ACCESS is generated."
2569     */
2570    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2571       if (attrs->DMABufPlanePitches[i].IsPresent &&
2572           attrs->DMABufPlanePitches[i].Value <= 0)
2573          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2574    }
2575
2576    /**
2577     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2578     * attribute values may be given.
2579     *
2580     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2581     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2582     */
2583    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2584       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2585           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2586          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2587    }
2588
2589    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2590     * mandate it, we only accept the same modifier across all planes. */
2591    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2592       if (attrs->DMABufPlaneFds[i].IsPresent) {
2593          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2594                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2595              (attrs->DMABufPlaneModifiersLo[0].Value !=
2596                attrs->DMABufPlaneModifiersLo[i].Value) ||
2597              (attrs->DMABufPlaneModifiersHi[0].Value !=
2598                attrs->DMABufPlaneModifiersHi[i].Value))
2599             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2600       }
2601    }
2602
2603    return EGL_TRUE;
2604 }
2605
2606 /* Returns the total number of planes for the format or zero if it isn't a
2607  * valid fourcc format.
2608  */
2609 static unsigned
2610 dri2_num_fourcc_format_planes(EGLint format)
2611 {
2612    switch (format) {
2613    case DRM_FORMAT_R8:
2614    case DRM_FORMAT_RG88:
2615    case DRM_FORMAT_GR88:
2616    case DRM_FORMAT_R16:
2617    case DRM_FORMAT_GR1616:
2618    case DRM_FORMAT_RGB332:
2619    case DRM_FORMAT_BGR233:
2620    case DRM_FORMAT_XRGB4444:
2621    case DRM_FORMAT_XBGR4444:
2622    case DRM_FORMAT_RGBX4444:
2623    case DRM_FORMAT_BGRX4444:
2624    case DRM_FORMAT_ARGB4444:
2625    case DRM_FORMAT_ABGR4444:
2626    case DRM_FORMAT_RGBA4444:
2627    case DRM_FORMAT_BGRA4444:
2628    case DRM_FORMAT_XRGB1555:
2629    case DRM_FORMAT_XBGR1555:
2630    case DRM_FORMAT_RGBX5551:
2631    case DRM_FORMAT_BGRX5551:
2632    case DRM_FORMAT_ARGB1555:
2633    case DRM_FORMAT_ABGR1555:
2634    case DRM_FORMAT_RGBA5551:
2635    case DRM_FORMAT_BGRA5551:
2636    case DRM_FORMAT_RGB565:
2637    case DRM_FORMAT_BGR565:
2638    case DRM_FORMAT_RGB888:
2639    case DRM_FORMAT_BGR888:
2640    case DRM_FORMAT_XRGB8888:
2641    case DRM_FORMAT_XBGR8888:
2642    case DRM_FORMAT_RGBX8888:
2643    case DRM_FORMAT_BGRX8888:
2644    case DRM_FORMAT_ARGB8888:
2645    case DRM_FORMAT_ABGR8888:
2646    case DRM_FORMAT_RGBA8888:
2647    case DRM_FORMAT_BGRA8888:
2648    case DRM_FORMAT_XRGB2101010:
2649    case DRM_FORMAT_XBGR2101010:
2650    case DRM_FORMAT_RGBX1010102:
2651    case DRM_FORMAT_BGRX1010102:
2652    case DRM_FORMAT_ARGB2101010:
2653    case DRM_FORMAT_ABGR2101010:
2654    case DRM_FORMAT_RGBA1010102:
2655    case DRM_FORMAT_BGRA1010102:
2656    case DRM_FORMAT_XBGR16161616F:
2657    case DRM_FORMAT_ABGR16161616F:
2658    case DRM_FORMAT_YUYV:
2659    case DRM_FORMAT_YVYU:
2660    case DRM_FORMAT_UYVY:
2661    case DRM_FORMAT_VYUY:
2662    case DRM_FORMAT_AYUV:
2663    case DRM_FORMAT_XYUV8888:
2664    case DRM_FORMAT_Y210:
2665    case DRM_FORMAT_Y212:
2666    case DRM_FORMAT_Y216:
2667    case DRM_FORMAT_Y410:
2668    case DRM_FORMAT_Y412:
2669    case DRM_FORMAT_Y416:
2670       return 1;
2671
2672    case DRM_FORMAT_NV12:
2673    case DRM_FORMAT_NV21:
2674    case DRM_FORMAT_NV16:
2675    case DRM_FORMAT_NV61:
2676    case DRM_FORMAT_P010:
2677    case DRM_FORMAT_P012:
2678    case DRM_FORMAT_P016:
2679       return 2;
2680
2681    case DRM_FORMAT_YUV410:
2682    case DRM_FORMAT_YVU410:
2683    case DRM_FORMAT_YUV411:
2684    case DRM_FORMAT_YVU411:
2685    case DRM_FORMAT_YUV420:
2686    case DRM_FORMAT_YVU420:
2687    case DRM_FORMAT_YUV422:
2688    case DRM_FORMAT_YVU422:
2689    case DRM_FORMAT_YUV444:
2690    case DRM_FORMAT_YVU444:
2691       return 3;
2692
2693    default:
2694       return 0;
2695    }
2696 }
2697
2698 /* Returns the total number of file descriptors. Zero indicates an error. */
2699 static unsigned
2700 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2701 {
2702    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2703    if (plane_n == 0) {
2704       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2705       return 0;
2706    }
2707
2708    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2709       /**
2710        * The modifiers extension spec says:
2711        *
2712        * "Modifiers may modify any attribute of a buffer import, including
2713        *  but not limited to adding extra planes to a format which
2714        *  otherwise does not have those planes. As an example, a modifier
2715        *  may add a plane for an external compression buffer to a
2716        *  single-plane format. The exact meaning and effect of any
2717        *  modifier is canonically defined by drm_fourcc.h, not as part of
2718        *  this extension."
2719        */
2720       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2721           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2722          plane_n = i + 1;
2723       }
2724    }
2725
2726    /**
2727      * The spec says:
2728      *
2729      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2730      *    incomplete, EGL_BAD_PARAMETER is generated."
2731      */
2732    for (unsigned i = 0; i < plane_n; ++i) {
2733       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2734           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2735           !attrs->DMABufPlanePitches[i].IsPresent) {
2736          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2737          return 0;
2738       }
2739    }
2740
2741    /**
2742     * The spec also says:
2743     *
2744     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2745     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2746     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2747     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2748     */
2749    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2750       if (attrs->DMABufPlaneFds[i].IsPresent ||
2751           attrs->DMABufPlaneOffsets[i].IsPresent ||
2752           attrs->DMABufPlanePitches[i].IsPresent) {
2753          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2754          return 0;
2755       }
2756    }
2757
2758    return plane_n;
2759 }
2760
2761 static EGLBoolean
2762 dri2_query_dma_buf_formats(_EGLDisplay *disp, EGLint max,
2763                            EGLint *formats, EGLint *count)
2764 {
2765    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2766    if (max < 0 || (max > 0 && formats == NULL))
2767       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2768
2769    if (dri2_dpy->image->base.version < 15 ||
2770        dri2_dpy->image->queryDmaBufFormats == NULL)
2771       return EGL_FALSE;
2772
2773    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2774                                             formats, count))
2775       return EGL_FALSE;
2776
2777    if (max > 0) {
2778       /* Assert that all of the formats returned are actually fourcc formats.
2779        * Some day, if we want the internal interface function to be able to
2780        * return the fake fourcc formats defined in dri_interface.h, we'll have
2781        * to do something more clever here to pair the list down to just real
2782        * fourcc formats so that we don't leak the fake internal ones.
2783        */
2784       for (int i = 0; i < *count; i++) {
2785          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2786       }
2787    }
2788
2789    return EGL_TRUE;
2790 }
2791
2792 static EGLBoolean
2793 dri2_query_dma_buf_modifiers(_EGLDisplay *disp, EGLint format,
2794                              EGLint max, EGLuint64KHR *modifiers,
2795                              EGLBoolean *external_only, EGLint *count)
2796 {
2797    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2798
2799    if (dri2_num_fourcc_format_planes(format) == 0)
2800       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2801
2802    if (max < 0)
2803       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2804
2805    if (max > 0 && modifiers == NULL)
2806       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2807
2808    if (dri2_dpy->image->base.version < 15 ||
2809        dri2_dpy->image->queryDmaBufModifiers == NULL)
2810       return EGL_FALSE;
2811
2812    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2813                                              max, modifiers,
2814                                              (unsigned int *) external_only,
2815                                              count) == false)
2816       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2817
2818    return EGL_TRUE;
2819 }
2820
2821 /**
2822  * The spec says:
2823  *
2824  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2825  *  EGL will take a reference to the dma_buf(s) which it will release at any
2826  *  time while the EGLDisplay is initialized. It is the responsibility of the
2827  *  application to close the dma_buf file descriptors."
2828  *
2829  * Therefore we must never close or otherwise modify the file descriptors.
2830  */
2831 _EGLImage *
2832 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2833                           EGLClientBuffer buffer, const EGLint *attr_list)
2834 {
2835    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2836    _EGLImage *res;
2837    _EGLImageAttribs attrs;
2838    __DRIimage *dri_image;
2839    unsigned num_fds;
2840    int fds[DMA_BUF_MAX_PLANES];
2841    int pitches[DMA_BUF_MAX_PLANES];
2842    int offsets[DMA_BUF_MAX_PLANES];
2843    uint64_t modifier;
2844    bool has_modifier = false;
2845    unsigned error;
2846
2847    /**
2848     * The spec says:
2849     *
2850     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2851     *     error EGL_BAD_PARAMETER is generated."
2852     */
2853    if (buffer != NULL) {
2854       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2855       return NULL;
2856    }
2857
2858    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2859       return NULL;
2860
2861    if (!dri2_check_dma_buf_attribs(&attrs))
2862       return NULL;
2863
2864    num_fds = dri2_check_dma_buf_format(&attrs);
2865    if (!num_fds)
2866       return NULL;
2867
2868    for (unsigned i = 0; i < num_fds; ++i) {
2869       fds[i] = attrs.DMABufPlaneFds[i].Value;
2870       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2871       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2872    }
2873
2874    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2875     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2876     * attrs.DMABufPlaneModifiersHi[0] */
2877    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2878       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2879                                       attrs.DMABufPlaneModifiersLo[0].Value);
2880       has_modifier = true;
2881    }
2882
2883    if (attrs.ProtectedContent) {
2884       if (dri2_dpy->image->base.version < 18 ||
2885           dri2_dpy->image->createImageFromDmaBufs3 == NULL) {
2886          _eglError(EGL_BAD_MATCH, "unsupported protected_content attribute");
2887          return EGL_NO_IMAGE_KHR;
2888       }
2889       if (!has_modifier)
2890          modifier = DRM_FORMAT_MOD_INVALID;
2891
2892       dri_image =
2893          dri2_dpy->image->createImageFromDmaBufs3(dri2_dpy->dri_screen,
2894             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2895             modifier, fds, num_fds, pitches, offsets,
2896             attrs.DMABufYuvColorSpaceHint.Value,
2897             attrs.DMABufSampleRangeHint.Value,
2898             attrs.DMABufChromaHorizontalSiting.Value,
2899             attrs.DMABufChromaVerticalSiting.Value,
2900             attrs.ProtectedContent ? __DRI_IMAGE_PROTECTED_CONTENT_FLAG : 0,
2901             &error,
2902             NULL);
2903    }
2904    else if (has_modifier) {
2905       if (dri2_dpy->image->base.version < 15 ||
2906           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2907          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2908          return EGL_NO_IMAGE_KHR;
2909       }
2910       dri_image =
2911          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2912             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2913             modifier, fds, num_fds, pitches, offsets,
2914             attrs.DMABufYuvColorSpaceHint.Value,
2915             attrs.DMABufSampleRangeHint.Value,
2916             attrs.DMABufChromaHorizontalSiting.Value,
2917             attrs.DMABufChromaVerticalSiting.Value,
2918             &error,
2919             NULL);
2920    }
2921    else {
2922       dri_image =
2923          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2924             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2925             fds, num_fds, pitches, offsets,
2926             attrs.DMABufYuvColorSpaceHint.Value,
2927             attrs.DMABufSampleRangeHint.Value,
2928             attrs.DMABufChromaHorizontalSiting.Value,
2929             attrs.DMABufChromaVerticalSiting.Value,
2930             &error,
2931             NULL);
2932    }
2933    dri2_create_image_khr_texture_error(error);
2934
2935    if (!dri_image)
2936       return EGL_NO_IMAGE_KHR;
2937
2938    res = dri2_create_image_from_dri(disp, dri_image);
2939
2940    return res;
2941 }
2942 static _EGLImage *
2943 dri2_create_drm_image_mesa(_EGLDisplay *disp, const EGLint *attr_list)
2944 {
2945    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2946    struct dri2_egl_image *dri2_img;
2947    _EGLImageAttribs attrs;
2948    unsigned int dri_use, valid_mask;
2949    int format;
2950
2951    if (!attr_list) {
2952       _eglError(EGL_BAD_PARAMETER, __func__);
2953       return EGL_NO_IMAGE_KHR;
2954    }
2955
2956    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2957       return EGL_NO_IMAGE_KHR;
2958
2959    if (attrs.Width <= 0 || attrs.Height <= 0) {
2960       _eglError(EGL_BAD_PARAMETER, __func__);
2961       return EGL_NO_IMAGE_KHR;
2962    }
2963
2964    switch (attrs.DRMBufferFormatMESA) {
2965    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2966       format = __DRI_IMAGE_FORMAT_ARGB8888;
2967       break;
2968    default:
2969       _eglError(EGL_BAD_PARAMETER, __func__);
2970       return EGL_NO_IMAGE_KHR;
2971    }
2972
2973    valid_mask =
2974       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2975       EGL_DRM_BUFFER_USE_SHARE_MESA |
2976       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2977    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2978       _eglError(EGL_BAD_PARAMETER, __func__);
2979       return EGL_NO_IMAGE_KHR;
2980    }
2981
2982    dri_use = 0;
2983    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2984       dri_use |= __DRI_IMAGE_USE_SHARE;
2985    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2986       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2987    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2988       dri_use |= __DRI_IMAGE_USE_CURSOR;
2989
2990    dri2_img = malloc(sizeof *dri2_img);
2991    if (!dri2_img) {
2992       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2993       return EGL_NO_IMAGE_KHR;
2994    }
2995
2996    _eglInitImage(&dri2_img->base, disp);
2997
2998    dri2_img->dri_image =
2999       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
3000                                    attrs.Width, attrs.Height,
3001                                    format, dri_use, dri2_img);
3002    if (dri2_img->dri_image == NULL) {
3003       free(dri2_img);
3004        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
3005       return EGL_NO_IMAGE_KHR;
3006    }
3007
3008    return &dri2_img->base;
3009 }
3010
3011 static EGLBoolean
3012 dri2_export_drm_image_mesa(_EGLDisplay *disp, _EGLImage *img,
3013                           EGLint *name, EGLint *handle, EGLint *stride)
3014 {
3015    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3016    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3017
3018    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
3019                                             __DRI_IMAGE_ATTRIB_NAME, name))
3020       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
3021
3022    if (handle)
3023       dri2_dpy->image->queryImage(dri2_img->dri_image,
3024                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
3025
3026    if (stride)
3027       dri2_dpy->image->queryImage(dri2_img->dri_image,
3028                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
3029
3030    return EGL_TRUE;
3031 }
3032
3033 /**
3034  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
3035
3036  * The spec provides a boolean return for the driver to reject exporting for
3037  * basically any reason, but doesn't specify any particular error cases.  For
3038  * now, we just fail if we don't have a DRM fourcc for the format.
3039  */
3040 static bool
3041 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
3042 {
3043    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3044    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3045    EGLint fourcc;
3046
3047    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
3048                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
3049       return false;
3050    }
3051
3052    return true;
3053 }
3054
3055 static EGLBoolean
3056 dri2_export_dma_buf_image_query_mesa(_EGLDisplay *disp, _EGLImage *img,
3057                                      EGLint *fourcc, EGLint *nplanes,
3058                                      EGLuint64KHR *modifiers)
3059 {
3060    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3061    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3062    int num_planes;
3063
3064    if (!dri2_can_export_dma_buf_image(disp, img))
3065       return EGL_FALSE;
3066
3067    dri2_dpy->image->queryImage(dri2_img->dri_image,
3068                                __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
3069    if (nplanes)
3070      *nplanes = num_planes;
3071
3072    if (fourcc)
3073       dri2_dpy->image->queryImage(dri2_img->dri_image,
3074                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
3075
3076    if (modifiers) {
3077       int mod_hi, mod_lo;
3078       uint64_t modifier = DRM_FORMAT_MOD_INVALID;
3079       bool query;
3080
3081       query = dri2_dpy->image->queryImage(dri2_img->dri_image,
3082                                           __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
3083                                           &mod_hi);
3084       query &= dri2_dpy->image->queryImage(dri2_img->dri_image,
3085                                            __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
3086                                            &mod_lo);
3087       if (query)
3088          modifier = combine_u32_into_u64 (mod_hi, mod_lo);
3089
3090       for (int i = 0; i < num_planes; i++)
3091         modifiers[i] = modifier;
3092    }
3093
3094    return EGL_TRUE;
3095 }
3096
3097 static EGLBoolean
3098 dri2_export_dma_buf_image_mesa(_EGLDisplay *disp, _EGLImage *img,
3099                                int *fds, EGLint *strides, EGLint *offsets)
3100 {
3101    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3102    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3103    EGLint nplanes;
3104
3105    if (!dri2_can_export_dma_buf_image(disp, img))
3106       return EGL_FALSE;
3107
3108    /* EGL_MESA_image_dma_buf_export spec says:
3109     *    "If the number of fds is less than the number of planes, then
3110     *    subsequent fd slots should contain -1."
3111     */
3112    if (fds) {
3113       /* Query nplanes so that we know how big the given array is. */
3114       dri2_dpy->image->queryImage(dri2_img->dri_image,
3115                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
3116       memset(fds, -1, nplanes * sizeof(int));
3117    }
3118
3119    /* rework later to provide multiple fds/strides/offsets */
3120    if (fds)
3121       dri2_dpy->image->queryImage(dri2_img->dri_image,
3122                                   __DRI_IMAGE_ATTRIB_FD, fds);
3123
3124    if (strides)
3125       dri2_dpy->image->queryImage(dri2_img->dri_image,
3126                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
3127
3128    if (offsets) {
3129       int img_offset;
3130       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
3131                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
3132       if (ret)
3133          offsets[0] = img_offset;
3134       else
3135          offsets[0] = 0;
3136    }
3137
3138    return EGL_TRUE;
3139 }
3140
3141 #endif
3142
3143 _EGLImage *
3144 dri2_create_image_khr(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
3145                       EGLClientBuffer buffer, const EGLint *attr_list)
3146 {
3147    switch (target) {
3148    case EGL_GL_TEXTURE_2D_KHR:
3149    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
3150    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
3151    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
3152    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
3153    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
3154    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
3155    case EGL_GL_TEXTURE_3D_KHR:
3156       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
3157    case EGL_GL_RENDERBUFFER_KHR:
3158       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
3159 #ifdef HAVE_LIBDRM
3160    case EGL_DRM_BUFFER_MESA:
3161       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
3162    case EGL_LINUX_DMA_BUF_EXT:
3163       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
3164 #endif
3165 #ifdef HAVE_WAYLAND_PLATFORM
3166    case EGL_WAYLAND_BUFFER_WL:
3167       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
3168 #endif
3169    default:
3170       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
3171       return EGL_NO_IMAGE_KHR;
3172    }
3173 }
3174
3175 static EGLBoolean
3176 dri2_destroy_image_khr(_EGLDisplay *disp, _EGLImage *image)
3177 {
3178    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3179    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
3180
3181    dri2_dpy->image->destroyImage(dri2_img->dri_image);
3182    free(dri2_img);
3183
3184    return EGL_TRUE;
3185 }
3186
3187 #ifdef HAVE_WAYLAND_PLATFORM
3188
3189 static void
3190 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
3191                          struct wl_drm_buffer *buffer)
3192 {
3193    _EGLDisplay *disp = user_data;
3194    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3195    __DRIimage *img;
3196    int dri_components = 0;
3197
3198    if (fd == -1)
3199       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
3200                                                   buffer->width,
3201                                                   buffer->height,
3202                                                   buffer->format,
3203                                                   (int*)&name, 1,
3204                                                   buffer->stride,
3205                                                   buffer->offset,
3206                                                   NULL);
3207    else
3208       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
3209                                                 buffer->width,
3210                                                 buffer->height,
3211                                                 buffer->format,
3212                                                 &fd, 1,
3213                                                 buffer->stride,
3214                                                 buffer->offset,
3215                                                 NULL);
3216
3217    if (img == NULL)
3218       return;
3219
3220    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
3221
3222    buffer->driver_format = NULL;
3223    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
3224       if (wl_drm_components[i].dri_components == dri_components)
3225          buffer->driver_format = &wl_drm_components[i];
3226
3227    if (buffer->driver_format == NULL)
3228       dri2_dpy->image->destroyImage(img);
3229    else
3230       buffer->driver_buffer = img;
3231 }
3232
3233 static void
3234 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
3235 {
3236    _EGLDisplay *disp = user_data;
3237    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3238
3239    dri2_dpy->image->destroyImage(buffer->driver_buffer);
3240 }
3241
3242 static EGLBoolean
3243 dri2_bind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3244 {
3245    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3246    const struct wayland_drm_callbacks wl_drm_callbacks = {
3247       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
3248       .reference_buffer = dri2_wl_reference_buffer,
3249       .release_buffer = dri2_wl_release_buffer,
3250       .is_format_supported = dri2_wl_is_format_supported
3251    };
3252    int flags = 0;
3253    char *device_name;
3254    uint64_t cap;
3255
3256    if (dri2_dpy->wl_server_drm)
3257            return EGL_FALSE;
3258
3259    device_name = drmGetRenderDeviceNameFromFd(dri2_dpy->fd);
3260    if (!device_name)
3261       device_name = strdup(dri2_dpy->device_name);
3262    if (!device_name)
3263       return EGL_FALSE;
3264
3265    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
3266        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
3267        dri2_dpy->image->base.version >= 7 &&
3268        dri2_dpy->image->createImageFromFds != NULL)
3269       flags |= WAYLAND_DRM_PRIME;
3270
3271    dri2_dpy->wl_server_drm =
3272            wayland_drm_init(wl_dpy, device_name,
3273                             &wl_drm_callbacks, disp, flags);
3274
3275    free(device_name);
3276
3277    if (!dri2_dpy->wl_server_drm)
3278            return EGL_FALSE;
3279
3280 #ifdef HAVE_DRM_PLATFORM
3281    /* We have to share the wl_drm instance with gbm, so gbm can convert
3282     * wl_buffers to gbm bos. */
3283    if (dri2_dpy->gbm_dri)
3284       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
3285 #endif
3286
3287    return EGL_TRUE;
3288 }
3289
3290 static EGLBoolean
3291 dri2_unbind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3292 {
3293    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3294
3295    if (!dri2_dpy->wl_server_drm)
3296            return EGL_FALSE;
3297
3298    wayland_drm_uninit(dri2_dpy->wl_server_drm);
3299    dri2_dpy->wl_server_drm = NULL;
3300
3301    return EGL_TRUE;
3302 }
3303
3304 static EGLBoolean
3305 dri2_query_wayland_buffer_wl(_EGLDisplay *disp, struct wl_resource *buffer_resource,
3306                              EGLint attribute, EGLint *value)
3307 {
3308    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3309    struct wl_drm_buffer *buffer;
3310    const struct wl_drm_components_descriptor *format;
3311
3312    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
3313    if (!buffer)
3314       return EGL_FALSE;
3315
3316    format = buffer->driver_format;
3317    switch (attribute) {
3318    case EGL_TEXTURE_FORMAT:
3319       *value = format->components;
3320       return EGL_TRUE;
3321    case EGL_WIDTH:
3322       *value = buffer->width;
3323       return EGL_TRUE;
3324    case EGL_HEIGHT:
3325       *value = buffer->height;
3326       return EGL_TRUE;
3327    }
3328
3329    return EGL_FALSE;
3330 }
3331 #endif
3332
3333 static void
3334 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
3335 {
3336    p_atomic_inc(&sync->refcount);
3337 }
3338
3339 static void
3340 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
3341                     struct dri2_egl_sync *dri2_sync)
3342 {
3343    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
3344       switch (dri2_sync->base.Type) {
3345       case EGL_SYNC_REUSABLE_KHR:
3346          cnd_destroy(&dri2_sync->cond);
3347          break;
3348       case EGL_SYNC_NATIVE_FENCE_ANDROID:
3349          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
3350             close(dri2_sync->base.SyncFd);
3351          break;
3352       default:
3353          break;
3354       }
3355
3356       if (dri2_sync->fence)
3357          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
3358
3359       free(dri2_sync);
3360    }
3361 }
3362
3363 static _EGLSync *
3364 dri2_create_sync(_EGLDisplay *disp, EGLenum type, const EGLAttrib *attrib_list)
3365 {
3366    _EGLContext *ctx = _eglGetCurrentContext();
3367    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3368    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3369    struct dri2_egl_sync *dri2_sync;
3370    EGLint ret;
3371    pthread_condattr_t attr;
3372
3373    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
3374    if (!dri2_sync) {
3375       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3376       return NULL;
3377    }
3378
3379    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
3380       free(dri2_sync);
3381       return NULL;
3382    }
3383
3384    switch (type) {
3385    case EGL_SYNC_FENCE_KHR:
3386       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
3387       if (!dri2_sync->fence) {
3388          /* Why did it fail? DRI doesn't return an error code, so we emit
3389           * a generic EGL error that doesn't communicate user error.
3390           */
3391          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3392          free(dri2_sync);
3393          return NULL;
3394       }
3395       break;
3396
3397    case EGL_SYNC_CL_EVENT_KHR:
3398       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
3399                                  dri2_dpy->dri_screen,
3400                                  dri2_sync->base.CLEvent);
3401       /* this can only happen if the cl_event passed in is invalid. */
3402       if (!dri2_sync->fence) {
3403          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3404          free(dri2_sync);
3405          return NULL;
3406       }
3407
3408       /* the initial status must be "signaled" if the cl_event is signaled */
3409       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
3410                                             dri2_sync->fence, 0, 0))
3411          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3412       break;
3413
3414    case EGL_SYNC_REUSABLE_KHR:
3415       /* intialize attr */
3416       ret = pthread_condattr_init(&attr);
3417
3418       if (ret) {
3419          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3420          free(dri2_sync);
3421          return NULL;
3422       }
3423
3424       /* change clock attribute to CLOCK_MONOTONIC */
3425       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
3426
3427       if (ret) {
3428          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3429          free(dri2_sync);
3430          return NULL;
3431       }
3432
3433       ret = pthread_cond_init(&dri2_sync->cond, &attr);
3434
3435       if (ret) {
3436          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3437          free(dri2_sync);
3438          return NULL;
3439       }
3440
3441       /* initial status of reusable sync must be "unsignaled" */
3442       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3443       break;
3444
3445    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3446       if (dri2_dpy->fence->create_fence_fd) {
3447          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3448                                     dri2_ctx->dri_context,
3449                                     dri2_sync->base.SyncFd);
3450       }
3451       if (!dri2_sync->fence) {
3452          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3453          free(dri2_sync);
3454          return NULL;
3455       }
3456       break;
3457    }
3458
3459    p_atomic_set(&dri2_sync->refcount, 1);
3460    return &dri2_sync->base;
3461 }
3462
3463 static EGLBoolean
3464 dri2_destroy_sync(_EGLDisplay *disp, _EGLSync *sync)
3465 {
3466    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3467    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3468    EGLint ret = EGL_TRUE;
3469    EGLint err;
3470
3471    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3472     * then unlock all threads possibly blocked by the reusable sync before
3473     * destroying it.
3474     */
3475    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3476        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3477       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3478       /* unblock all threads currently blocked by sync */
3479       err = cnd_broadcast(&dri2_sync->cond);
3480
3481       if (err) {
3482          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3483          ret = EGL_FALSE;
3484       }
3485    }
3486
3487    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3488
3489    return ret;
3490 }
3491
3492 static EGLint
3493 dri2_dup_native_fence_fd(_EGLDisplay *disp, _EGLSync *sync)
3494 {
3495    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3496    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3497
3498    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3499
3500    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3501       /* try to retrieve the actual native fence fd.. if rendering is
3502        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3503        */
3504       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3505                                                    dri2_sync->fence);
3506    }
3507
3508    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3509       /* if native fence fd still not created, return an error: */
3510       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3511       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3512    }
3513
3514    assert(sync_valid_fd(sync->SyncFd));
3515
3516    return os_dupfd_cloexec(sync->SyncFd);
3517 }
3518
3519 static void
3520 dri2_set_blob_cache_funcs(_EGLDisplay *disp,
3521                           EGLSetBlobFuncANDROID set,
3522                           EGLGetBlobFuncANDROID get)
3523 {
3524    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3525    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3526                                    disp->BlobCacheSet,
3527                                    disp->BlobCacheGet);
3528 }
3529
3530 static EGLint
3531 dri2_client_wait_sync(_EGLDisplay *disp, _EGLSync *sync,
3532                       EGLint flags, EGLTime timeout)
3533 {
3534    _EGLContext *ctx = _eglGetCurrentContext();
3535    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3536    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3537    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3538    unsigned wait_flags = 0;
3539
3540    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3541
3542    /* The EGL_KHR_fence_sync spec states:
3543     *
3544     *    "If no context is current for the bound API,
3545     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3546     */
3547    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3548       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3549
3550    /* the sync object should take a reference while waiting */
3551    dri2_egl_ref_sync(dri2_sync);
3552
3553    switch (sync->Type) {
3554    case EGL_SYNC_FENCE_KHR:
3555    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3556    case EGL_SYNC_CL_EVENT_KHR:
3557       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3558                                          dri2_sync->fence, wait_flags,
3559                                          timeout))
3560          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3561       else
3562          ret = EGL_TIMEOUT_EXPIRED_KHR;
3563       break;
3564
3565    case EGL_SYNC_REUSABLE_KHR:
3566       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3567           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3568          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3569          dri2_gl_flush();
3570       }
3571
3572       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3573       if (timeout == EGL_FOREVER_KHR) {
3574          mtx_lock(&dri2_sync->mutex);
3575          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3576          mtx_unlock(&dri2_sync->mutex);
3577       } else {
3578          /* if reusable sync has not been yet signaled */
3579          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3580             /* timespecs for cnd_timedwait */
3581             struct timespec current;
3582             struct timespec expire;
3583
3584             /* We override the clock to monotonic when creating the condition
3585              * variable. */
3586             clock_gettime(CLOCK_MONOTONIC, &current);
3587
3588             /* calculating when to expire */
3589             expire.tv_nsec = timeout % 1000000000L;
3590             expire.tv_sec = timeout / 1000000000L;
3591
3592             expire.tv_nsec += current.tv_nsec;
3593             expire.tv_sec += current.tv_sec;
3594
3595             /* expire.nsec now is a number between 0 and 1999999998 */
3596             if (expire.tv_nsec > 999999999L) {
3597                expire.tv_sec++;
3598                expire.tv_nsec -= 1000000000L;
3599             }
3600
3601             mtx_lock(&dri2_sync->mutex);
3602             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3603             mtx_unlock(&dri2_sync->mutex);
3604
3605             if (ret == thrd_timedout) {
3606                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3607                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3608                } else {
3609                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3610                   ret = EGL_FALSE;
3611                }
3612             }
3613          }
3614       }
3615       break;
3616   }
3617   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3618
3619   return ret;
3620 }
3621
3622 static EGLBoolean
3623 dri2_signal_sync(_EGLDisplay *disp, _EGLSync *sync, EGLenum mode)
3624 {
3625    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3626    EGLint ret;
3627
3628    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3629       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3630
3631    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3632       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3633
3634    dri2_sync->base.SyncStatus = mode;
3635
3636    if (mode == EGL_SIGNALED_KHR) {
3637       ret = cnd_broadcast(&dri2_sync->cond);
3638
3639       /* fail to broadcast */
3640       if (ret)
3641          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3642    }
3643
3644    return EGL_TRUE;
3645 }
3646
3647 static EGLint
3648 dri2_server_wait_sync(_EGLDisplay *disp, _EGLSync *sync)
3649 {
3650    _EGLContext *ctx = _eglGetCurrentContext();
3651    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3652    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3653    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3654
3655    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3656                                      dri2_sync->fence, 0);
3657    return EGL_TRUE;
3658 }
3659
3660 static int
3661 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3662                                struct mesa_glinterop_device_info *out)
3663 {
3664    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3665    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3666
3667    if (!dri2_dpy->interop)
3668       return MESA_GLINTEROP_UNSUPPORTED;
3669
3670    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3671 }
3672
3673 static int
3674 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3675                            struct mesa_glinterop_export_in *in,
3676                            struct mesa_glinterop_export_out *out)
3677 {
3678    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3679    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3680
3681    if (!dri2_dpy->interop)
3682       return MESA_GLINTEROP_UNSUPPORTED;
3683
3684    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3685 }
3686
3687 const _EGLDriver _eglDriver = {
3688    .Initialize = dri2_initialize,
3689    .Terminate = dri2_terminate,
3690    .CreateContext = dri2_create_context,
3691    .DestroyContext = dri2_destroy_context,
3692    .MakeCurrent = dri2_make_current,
3693    .CreateWindowSurface = dri2_create_window_surface,
3694    .CreatePixmapSurface = dri2_create_pixmap_surface,
3695    .CreatePbufferSurface = dri2_create_pbuffer_surface,
3696    .DestroySurface = dri2_destroy_surface,
3697    .GetProcAddress = dri2_get_proc_address,
3698    .WaitClient = dri2_wait_client,
3699    .WaitNative = dri2_wait_native,
3700    .BindTexImage = dri2_bind_tex_image,
3701    .ReleaseTexImage = dri2_release_tex_image,
3702    .SwapInterval = dri2_swap_interval,
3703    .SwapBuffers = dri2_swap_buffers,
3704    .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
3705    .SwapBuffersRegionNOK = dri2_swap_buffers_region,
3706    .SetDamageRegion = dri2_set_damage_region,
3707    .PostSubBufferNV = dri2_post_sub_buffer,
3708    .CopyBuffers = dri2_copy_buffers,
3709    .QueryBufferAge = dri2_query_buffer_age,
3710    .CreateImageKHR = dri2_create_image,
3711    .DestroyImageKHR = dri2_destroy_image_khr,
3712    .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
3713    .QuerySurface = dri2_query_surface,
3714    .QueryDriverName = dri2_query_driver_name,
3715    .QueryDriverConfig = dri2_query_driver_config,
3716 #ifdef HAVE_LIBDRM
3717    .CreateDRMImageMESA = dri2_create_drm_image_mesa,
3718    .ExportDRMImageMESA = dri2_export_drm_image_mesa,
3719    .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
3720    .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
3721    .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
3722    .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
3723 #endif
3724 #ifdef HAVE_WAYLAND_PLATFORM
3725    .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
3726    .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
3727    .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
3728 #endif
3729    .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
3730    .CreateSyncKHR = dri2_create_sync,
3731    .ClientWaitSyncKHR = dri2_client_wait_sync,
3732    .SignalSyncKHR = dri2_signal_sync,
3733    .WaitSyncKHR = dri2_server_wait_sync,
3734    .DestroySyncKHR = dri2_destroy_sync,
3735    .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
3736    .GLInteropExportObject = dri2_interop_export_object,
3737    .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
3738    .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
3739 };