src/egl/drivers/dri2/egl_dri2.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdbool.h>
  29 #include <stdint.h>
  30 #include <stdbool.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdio.h>
  34 #include <limits.h>
  35 #include <dlfcn.h>
  36 #include <fcntl.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <c11/threads.h>
  40 #include <time.h>
  41 #ifdef HAVE_LIBDRM
  42 #include <xf86drm.h>
  43 #include "drm-uapi/drm_fourcc.h"
  44 #endif
  45 #include <GL/gl.h>
  46 #include <GL/internal/dri_interface.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49
  50 #ifdef HAVE_WAYLAND_PLATFORM
  51 #include <wayland-client.h>
  52 #include "wayland-drm.h"
  53 #include "wayland-drm-client-protocol.h"
  54 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  55 #endif
  56
  57 #ifdef HAVE_X11_PLATFORM
  58 #include "X11/Xlibint.h"
  59 #endif
  60
  61 #include "egldefines.h"
  62 #include "egl_dri2.h"
  63 #include "GL/mesa_glinterop.h"
  64 #include "loader/loader.h"
  65 #include "util/libsync.h"
  66 #include "util/os_file.h"
  67 #include "util/u_atomic.h"
  68 #include "util/u_vector.h"
  69 #include "mapi/glapi/glapi.h"
  70 #include "util/bitscan.h"
  71 #include "util/u_math.h"
  72
  73 #define NUM_ATTRIBS 12
  74
  75 static const struct dri2_pbuffer_visual {
  76    const char *format_name;
  77    unsigned int dri_image_format;
  78    int rgba_shifts[4];
  79    unsigned int rgba_sizes[4];
  80 } dri2_pbuffer_visuals[] = {
  81    {
  82       "ABGR16F",
  83       __DRI_IMAGE_FORMAT_ABGR16161616F,
  84       { 0, 16, 32, 48 },
  85       { 16, 16, 16, 16 }
  86    },
  87    {
  88       "XBGR16F",
  89       __DRI_IMAGE_FORMAT_XBGR16161616F,
  90       { 0, 16, 32, -1 },
  91       { 16, 16, 16, 0 }
  92    },
  93    {
  94       "A2RGB10",
  95       __DRI_IMAGE_FORMAT_ARGB2101010,
  96       { 20, 10, 0, 30 },
  97       { 10, 10, 10, 2 }
  98    },
  99    {
 100       "X2RGB10",
 101       __DRI_IMAGE_FORMAT_XRGB2101010,
 102       { 20, 10, 0, -1 },
 103       { 10, 10, 10, 0 }
 104    },
 105    {
 106       "ARGB8888",
 107       __DRI_IMAGE_FORMAT_ARGB8888,
 108       { 16, 8, 0, 24 },
 109       { 8, 8, 8, 8 }
 110    },
 111    {
 112       "RGB888",
 113       __DRI_IMAGE_FORMAT_XRGB8888,
 114       { 16, 8, 0, -1 },
 115       { 8, 8, 8, 0 }
 116    },
 117    {
 118       "RGB565",
 119       __DRI_IMAGE_FORMAT_RGB565,
 120       { 11, 5, 0, -1 },
 121       { 5, 6, 5, 0 }
 122    },
 123 };
 124
 125 static void
 126 dri_set_background_context(void *loaderPrivate)
 127 {
 128    _EGLContext *ctx = _eglGetCurrentContext();
 129    _EGLThreadInfo *t = _eglGetCurrentThread();
 130
 131    _eglBindContextToThread(ctx, t);
 132 }
 133
 134 static void
 135 dri2_gl_flush()
 136 {
 137    static void (*glFlush)(void);
 138    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 139
 140    mtx_lock(&glFlushMutex);
 141    if (!glFlush)
 142       glFlush = _glapi_get_proc_address("glFlush");
 143    mtx_unlock(&glFlushMutex);
 144
 145    /* if glFlush is not available things are horribly broken */
 146    if (!glFlush) {
 147       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 148       return;
 149    }
 150
 151    glFlush();
 152 }
 153
 154 static GLboolean
 155 dri_is_thread_safe(void *loaderPrivate)
 156 {
 157    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 158    UNUSED _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 159
 160 #ifdef HAVE_X11_PLATFORM
 161    Display *xdpy = (Display*)display->PlatformDisplay;
 162
 163    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 164     * platform
 165     *
 166     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 167     * It wll be NULL if XInitThreads wasn't called.
 168     */
 169    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 170       return false;
 171 #endif
 172
 173    return true;
 174 }
 175
 176 const __DRIbackgroundCallableExtension background_callable_extension = {
 177    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 178
 179    .setBackgroundContext = dri_set_background_context,
 180    .isThreadSafe         = dri_is_thread_safe,
 181 };
 182
 183 const __DRIuseInvalidateExtension use_invalidate = {
 184    .base = { __DRI_USE_INVALIDATE, 1 }
 185 };
 186
 187 static void
 188 dri2_get_pbuffer_drawable_info(__DRIdrawable * draw,
 189                                int *x, int *y, int *w, int *h,
 190                                void *loaderPrivate)
 191 {
 192    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 193
 194    *x = *y = 0;
 195    *w = dri2_surf->base.Width;
 196    *h = dri2_surf->base.Height;
 197 }
 198
 199 static int
 200 dri2_get_bytes_per_pixel(struct dri2_egl_surface *dri2_surf)
 201 {
 202    const int depth = dri2_surf->base.Config->BufferSize;
 203    return depth ? util_next_power_of_two(depth / 8) : 0;
 204 }
 205
 206 static void
 207 dri2_put_image(__DRIdrawable * draw, int op,
 208                int x, int y, int w, int h,
 209                char *data, void *loaderPrivate)
 210 {
 211    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 212    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 213    const int width = dri2_surf->base.Width;
 214    const int height = dri2_surf->base.Height;
 215    const int dst_stride = width*bpp;
 216    const int src_stride = w*bpp;
 217    const int x_offset = x*bpp;
 218    int copy_width = src_stride;
 219
 220    if (!dri2_surf->swrast_device_buffer)
 221       dri2_surf->swrast_device_buffer = malloc(height*dst_stride);
 222
 223    if (dri2_surf->swrast_device_buffer) {
 224       const char *src = data;
 225       char *dst = dri2_surf->swrast_device_buffer;
 226
 227       dst += x_offset;
 228       dst += y*dst_stride;
 229
 230       /* Drivers are allowed to submit OOB PutImage requests, so clip here. */
 231       if (copy_width > dst_stride - x_offset)
 232          copy_width = dst_stride - x_offset;
 233       if (h > height - y)
 234          h = height - y;
 235
 236       for (; 0 < h; --h) {
 237          memcpy(dst, src, copy_width);
 238          dst += dst_stride;
 239          src += src_stride;
 240       }
 241    }
 242 }
 243
 244 static void
 245 dri2_get_image(__DRIdrawable * read,
 246                int x, int y, int w, int h,
 247                char *data, void *loaderPrivate)
 248 {
 249    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 250    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 251    const int width = dri2_surf->base.Width;
 252    const int height = dri2_surf->base.Height;
 253    const int src_stride = width*bpp;
 254    const int dst_stride = w*bpp;
 255    const int x_offset = x*bpp;
 256    int copy_width = dst_stride;
 257    const char *src = dri2_surf->swrast_device_buffer;
 258    char *dst = data;
 259
 260    if (!src) {
 261       memset(data, 0, copy_width * h);
 262       return;
 263    }
 264
 265    src += x_offset;
 266    src += y*src_stride;
 267
 268    /* Drivers are allowed to submit OOB GetImage requests, so clip here. */
 269    if (copy_width > src_stride - x_offset)
 270       copy_width = src_stride - x_offset;
 271    if (h > height - y)
 272       h = height - y;
 273
 274    for (; 0 < h; --h) {
 275       memcpy(dst, src, copy_width);
 276       src += src_stride;
 277       dst += dst_stride;
 278    }
 279
 280 }
 281
 282 /* HACK: technically we should have swrast_null, instead of these.
 283  */
 284 const __DRIswrastLoaderExtension swrast_pbuffer_loader_extension = {
 285    .base            = { __DRI_SWRAST_LOADER, 1 },
 286    .getDrawableInfo = dri2_get_pbuffer_drawable_info,
 287    .putImage        = dri2_put_image,
 288    .getImage        = dri2_get_image,
 289 };
 290
 291 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 292    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 293    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 294    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 295    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 296    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 297    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 298    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 299    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 300    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 301    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 302    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 303    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 304    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 305 };
 306
 307 const __DRIconfig *
 308 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 309                     EGLenum colorspace)
 310 {
 311    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 312    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 313
 314    return conf->dri_config[double_buffer][srgb];
 315 }
 316
 317 static EGLBoolean
 318 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 319 {
 320    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 321       return EGL_FALSE;
 322
 323    if (!_eglMatchConfig(conf, criteria))
 324       return EGL_FALSE;
 325
 326    return EGL_TRUE;
 327 }
 328
 329 void
 330 dri2_get_shifts_and_sizes(const __DRIcoreExtension *core,
 331                           const __DRIconfig *config, int *shifts,
 332                           unsigned int *sizes)
 333 {
 334    unsigned int mask;
 335
 336    if (core->getConfigAttrib(config, __DRI_ATTRIB_RED_SHIFT, (unsigned int *)&shifts[0])) {
 337       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SHIFT, (unsigned int *)&shifts[1]);
 338       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SHIFT, (unsigned int *)&shifts[2]);
 339       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SHIFT, (unsigned int *)&shifts[3]);
 340    } else {
 341       /* Driver isn't exposing shifts, so convert masks to shifts */
 342       core->getConfigAttrib(config, __DRI_ATTRIB_RED_MASK, &mask);
 343       shifts[0] = ffs(mask) - 1;
 344       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_MASK, &mask);
 345       shifts[1] = ffs(mask) - 1;
 346       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_MASK, &mask);
 347       shifts[2] = ffs(mask) - 1;
 348       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_MASK, &mask);
 349       shifts[3] = ffs(mask) - 1;
 350    }
 351
 352    core->getConfigAttrib(config, __DRI_ATTRIB_RED_SIZE, &sizes[0]);
 353    core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SIZE, &sizes[1]);
 354    core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SIZE, &sizes[2]);
 355    core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SIZE, &sizes[3]);
 356 }
 357
 358 void
 359 dri2_get_render_type_float(const __DRIcoreExtension *core,
 360                            const __DRIconfig *config,
 361                            bool *is_float)
 362 {
 363    unsigned int render_type;
 364
 365    core->getConfigAttrib(config, __DRI_ATTRIB_RENDER_TYPE, &render_type);
 366    *is_float = (render_type & __DRI_ATTRIB_FLOAT_BIT) ? true : false;
 367 }
 368
 369 unsigned int
 370 dri2_image_format_for_pbuffer_config(struct dri2_egl_display *dri2_dpy,
 371                                      const __DRIconfig *config)
 372 {
 373    int shifts[4];
 374    unsigned int sizes[4];
 375
 376    dri2_get_shifts_and_sizes(dri2_dpy->core, config, shifts, sizes);
 377
 378    for (unsigned i = 0; i < ARRAY_SIZE(dri2_pbuffer_visuals); ++i) {
 379       const struct dri2_pbuffer_visual *visual = &dri2_pbuffer_visuals[i];
 380
 381       if (shifts[0] == visual->rgba_shifts[0] &&
 382           shifts[1] == visual->rgba_shifts[1] &&
 383           shifts[2] == visual->rgba_shifts[2] &&
 384           shifts[3] == visual->rgba_shifts[3] &&
 385           sizes[0] == visual->rgba_sizes[0] &&
 386           sizes[1] == visual->rgba_sizes[1] &&
 387           sizes[2] == visual->rgba_sizes[2] &&
 388           sizes[3] == visual->rgba_sizes[3]) {
 389          return visual->dri_image_format;
 390       }
 391    }
 392
 393    return __DRI_IMAGE_FORMAT_NONE;
 394 }
 395
 396 struct dri2_egl_config *
 397 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 398                 EGLint surface_type, const EGLint *attr_list,
 399                 const int *rgba_shifts, const unsigned int *rgba_sizes)
 400 {
 401    struct dri2_egl_config *conf;
 402    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 403    _EGLConfig base;
 404    unsigned int attrib, value, double_buffer;
 405    bool srgb = false;
 406    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 407    int dri_shifts[4] = { -1, -1, -1, -1 };
 408    unsigned int dri_sizes[4] = { 0, 0, 0, 0 };
 409    _EGLConfig *matching_config;
 410    EGLint num_configs = 0;
 411    EGLint config_id;
 412
 413    _eglInitConfig(&base, disp, id);
 414
 415    double_buffer = 0;
 416    bind_to_texture_rgb = 0;
 417    bind_to_texture_rgba = 0;
 418
 419    for (int i = 0; i < __DRI_ATTRIB_MAX; ++i) {
 420       if (!dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib, &value))
 421          break;
 422
 423       switch (attrib) {
 424       case __DRI_ATTRIB_RENDER_TYPE:
 425          if (value & __DRI_ATTRIB_FLOAT_BIT)
 426             base.ComponentType = EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT;
 427          if (value & __DRI_ATTRIB_RGBA_BIT)
 428             value = EGL_RGB_BUFFER;
 429          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 430             value = EGL_LUMINANCE_BUFFER;
 431          else
 432             return NULL;
 433          base.ColorBufferType = value;
 434          break;
 435
 436       case __DRI_ATTRIB_CONFIG_CAVEAT:
 437          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 438             value = EGL_NON_CONFORMANT_CONFIG;
 439          else if (value & __DRI_ATTRIB_SLOW_BIT)
 440             value = EGL_SLOW_CONFIG;
 441          else
 442             value = EGL_NONE;
 443          base.ConfigCaveat = value;
 444          break;
 445
 446       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 447          bind_to_texture_rgb = value;
 448          break;
 449
 450       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 451          bind_to_texture_rgba = value;
 452          break;
 453
 454       case __DRI_ATTRIB_DOUBLE_BUFFER:
 455          double_buffer = value;
 456          break;
 457
 458       case __DRI_ATTRIB_RED_SIZE:
 459          dri_sizes[0] = value;
 460          base.RedSize = value;
 461          break;
 462
 463       case __DRI_ATTRIB_RED_MASK:
 464          dri_shifts[0] = ffs(value) - 1;
 465          break;
 466
 467       case __DRI_ATTRIB_RED_SHIFT:
 468          dri_shifts[0] = value;
 469          break;
 470
 471       case __DRI_ATTRIB_GREEN_SIZE:
 472          dri_sizes[1] = value;
 473          base.GreenSize = value;
 474          break;
 475
 476       case __DRI_ATTRIB_GREEN_MASK:
 477          dri_shifts[1] = ffs(value) - 1;
 478          break;
 479
 480       case __DRI_ATTRIB_GREEN_SHIFT:
 481          dri_shifts[1] = value;
 482          break;
 483
 484       case __DRI_ATTRIB_BLUE_SIZE:
 485          dri_sizes[2] = value;
 486          base.BlueSize = value;
 487          break;
 488
 489       case __DRI_ATTRIB_BLUE_MASK:
 490          dri_shifts[2] = ffs(value) - 1;
 491          break;
 492
 493       case __DRI_ATTRIB_BLUE_SHIFT:
 494          dri_shifts[2] = value;
 495          break;
 496
 497      case __DRI_ATTRIB_ALPHA_SIZE:
 498          dri_sizes[3] = value;
 499          base.AlphaSize = value;
 500          break;
 501
 502       case __DRI_ATTRIB_ALPHA_MASK:
 503          dri_shifts[3] = ffs(value) - 1;
 504          break;
 505
 506       case __DRI_ATTRIB_ALPHA_SHIFT:
 507          dri_shifts[3] = value;
 508          break;
 509
 510       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 511       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 512       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 513       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 514          /* Don't expose visuals with the accumulation buffer. */
 515          if (value > 0)
 516             return NULL;
 517          break;
 518
 519       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 520          srgb = value != 0;
 521          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 522             return NULL;
 523          break;
 524
 525       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 526          base.MaxPbufferWidth = _EGL_MAX_PBUFFER_WIDTH;
 527          break;
 528       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 529          base.MaxPbufferHeight = _EGL_MAX_PBUFFER_HEIGHT;
 530          break;
 531       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
 532          if (disp->Extensions.KHR_mutable_render_buffer)
 533             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
 534          break;
 535       default:
 536          key = dri2_to_egl_attribute_map[attrib];
 537          if (key != 0)
 538             _eglSetConfigKey(&base, key, value);
 539          break;
 540       }
 541    }
 542
 543    if (attr_list)
 544       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 545          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 546
 547    if (rgba_shifts && memcmp(rgba_shifts, dri_shifts, sizeof(dri_shifts)))
 548       return NULL;
 549
 550    if (rgba_sizes && memcmp(rgba_sizes, dri_sizes, sizeof(dri_sizes)))
 551       return NULL;
 552
 553    base.NativeRenderable = EGL_TRUE;
 554
 555    base.SurfaceType = surface_type;
 556    if (surface_type & (EGL_PBUFFER_BIT |
 557        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 558       base.BindToTextureRGB = bind_to_texture_rgb;
 559       if (base.AlphaSize > 0)
 560          base.BindToTextureRGBA = bind_to_texture_rgba;
 561    }
 562
 563    if (double_buffer) {
 564       surface_type &= ~EGL_PIXMAP_BIT;
 565    }
 566
 567    if (!surface_type)
 568       return NULL;
 569
 570    base.RenderableType = disp->ClientAPIs;
 571    base.Conformant = disp->ClientAPIs;
 572
 573    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 574    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 575
 576    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 577       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 578       return NULL;
 579    }
 580
 581    config_id = base.ConfigID;
 582    base.ConfigID    = EGL_DONT_CARE;
 583    base.SurfaceType = EGL_DONT_CARE;
 584    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 585                                  (_EGLArrayForEach) dri2_match_config, &base);
 586
 587    if (num_configs == 1) {
 588       conf = (struct dri2_egl_config *) matching_config;
 589
 590       if (!conf->dri_config[double_buffer][srgb])
 591          conf->dri_config[double_buffer][srgb] = dri_config;
 592       else
 593          /* a similar config type is already added (unlikely) => discard */
 594          return NULL;
 595    }
 596    else if (num_configs == 0) {
 597       conf = calloc(1, sizeof *conf);
 598       if (conf == NULL)
 599          return NULL;
 600
 601       conf->dri_config[double_buffer][srgb] = dri_config;
 602
 603       memcpy(&conf->base, &base, sizeof base);
 604       conf->base.SurfaceType = 0;
 605       conf->base.ConfigID = config_id;
 606
 607       _eglLinkConfig(&conf->base);
 608    }
 609    else {
 610       unreachable("duplicates should not be possible");
 611       return NULL;
 612    }
 613
 614    conf->base.SurfaceType |= surface_type;
 615
 616    return conf;
 617 }
 618
 619 EGLBoolean
 620 dri2_add_pbuffer_configs_for_visuals(_EGLDisplay *disp)
 621 {
 622    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 623    unsigned int format_count[ARRAY_SIZE(dri2_pbuffer_visuals)] = { 0 };
 624    unsigned int config_count = 0;
 625
 626    for (unsigned i = 0; dri2_dpy->driver_configs[i] != NULL; i++) {
 627       for (unsigned j = 0; j < ARRAY_SIZE(dri2_pbuffer_visuals); j++) {
 628          struct dri2_egl_config *dri2_conf;
 629
 630          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
 631                config_count + 1, EGL_PBUFFER_BIT, NULL,
 632                dri2_pbuffer_visuals[j].rgba_shifts, dri2_pbuffer_visuals[j].rgba_sizes);
 633
 634          if (dri2_conf) {
 635             if (dri2_conf->base.ConfigID == config_count + 1)
 636                config_count++;
 637             format_count[j]++;
 638          }
 639       }
 640    }
 641
 642    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
 643       if (!format_count[i]) {
 644          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
 645                dri2_pbuffer_visuals[i].format_name);
 646       }
 647    }
 648
 649    return (config_count != 0);
 650 }
 651
 652 GLboolean
 653 dri2_validate_egl_image(void *image, void *data)
 654 {
 655    _EGLDisplay *disp = data;
 656    _EGLImage *img;
 657
 658    mtx_lock(&disp->Mutex);
 659    img = _eglLookupImage(image, disp);
 660    mtx_unlock(&disp->Mutex);
 661
 662    if (img == NULL) {
 663       _eglError(EGL_BAD_PARAMETER, "dri2_validate_egl_image");
 664       return false;
 665    }
 666
 667    return true;
 668 }
 669
 670 __DRIimage *
 671 dri2_lookup_egl_image_validated(void *image, void *data)
 672 {
 673    struct dri2_egl_image *dri2_img;
 674
 675    (void)data;
 676
 677    dri2_img = dri2_egl_image(image);
 678
 679    return dri2_img->dri_image;
 680 }
 681
 682 __DRIimage *
 683 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 684 {
 685    (void) screen;
 686
 687    if (!dri2_validate_egl_image(image, data))
 688       return NULL;
 689
 690    return dri2_lookup_egl_image_validated(image, data);
 691 }
 692
 693 const __DRIimageLookupExtension image_lookup_extension = {
 694    .base = { __DRI_IMAGE_LOOKUP, 2 },
 695
 696    .lookupEGLImage       = dri2_lookup_egl_image,
 697    .validateEGLImage     = dri2_validate_egl_image,
 698    .lookupEGLImageValidated = dri2_lookup_egl_image_validated,
 699 };
 700
 701 struct dri2_extension_match {
 702    const char *name;
 703    int version;
 704    int offset;
 705 };
 706
 707 static const struct dri2_extension_match dri3_driver_extensions[] = {
 708    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 709    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 710    { NULL, 0, 0 }
 711 };
 712
 713 static const struct dri2_extension_match dri2_driver_extensions[] = {
 714    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 715    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 716    { NULL, 0, 0 }
 717 };
 718
 719 static const struct dri2_extension_match dri2_core_extensions[] = {
 720    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 721    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 722    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 723    { NULL, 0, 0 }
 724 };
 725
 726 static const struct dri2_extension_match swrast_driver_extensions[] = {
 727    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 728    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 729    { NULL, 0, 0 }
 730 };
 731
 732 static const struct dri2_extension_match swrast_core_extensions[] = {
 733    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 734    { NULL, 0, 0 }
 735 };
 736
 737 static const struct dri2_extension_match optional_driver_extensions[] = {
 738    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
 739    { NULL, 0, 0 }
 740 };
 741
 742 static const struct dri2_extension_match optional_core_extensions[] = {
 743    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 744    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 745    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 746    { __DRI2_BUFFER_DAMAGE, 1, offsetof(struct dri2_egl_display, buffer_damage) },
 747    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 748    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 749    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 750    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 751    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 752    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 753    { __DRI_KOPPER, 1, offsetof(struct dri2_egl_display, kopper) },
 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_renderer_query_integer(dri2_dpy,
 954                                    __DRI2_RENDERER_HAS_NO_ERROR_CONTEXT))
 955       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 956
 957    if (dri2_dpy->fence) {
 958       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 959       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 960       if (dri2_dpy->fence->get_fence_from_cl_event)
 961          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 962       if (dri2_dpy->fence->base.version >= 2 &&
 963           dri2_dpy->fence->get_capabilities) {
 964          unsigned capabilities =
 965             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 966          disp->Extensions.ANDROID_native_fence_sync =
 967             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 968       }
 969    }
 970
 971    if (dri2_dpy->blob)
 972       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 973
 974    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 975
 976    if (dri2_dpy->image) {
 977       if (dri2_dpy->image->base.version >= 10 &&
 978           dri2_dpy->image->getCapabilities != NULL) {
 979          int capabilities;
 980
 981          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 982          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 983
 984          if (dri2_dpy->image->base.version >= 11)
 985             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 986       } else {
 987          disp->Extensions.MESA_drm_image = EGL_TRUE;
 988          if (dri2_dpy->image->base.version >= 11)
 989             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 990       }
 991
 992       disp->Extensions.KHR_image_base = EGL_TRUE;
 993       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 994       if (dri2_dpy->image->base.version >= 5 &&
 995           dri2_dpy->image->createImageFromTexture) {
 996          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 997          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 998
 999          if (dri2_renderer_query_integer(dri2_dpy,
1000                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
1001              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
1002       }
1003 #ifdef HAVE_LIBDRM
1004       if (dri2_dpy->image->base.version >= 8 &&
1005           dri2_dpy->image->createImageFromDmaBufs) {
1006          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
1007          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
1008       }
1009 #endif
1010    }
1011
1012    if (dri2_dpy->flush_control)
1013       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
1014
1015    if (dri2_dpy->buffer_damage && dri2_dpy->buffer_damage->set_damage_region)
1016       disp->Extensions.KHR_partial_update = EGL_TRUE;
1017
1018    disp->Extensions.EXT_protected_surface =
1019       dri2_renderer_query_integer(dri2_dpy,
1020                                   __DRI2_RENDERER_HAS_PROTECTED_CONTENT);
1021 }
1022
1023 void
1024 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
1025 {
1026    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1027    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1028
1029    /* Allow driconf to override applications.*/
1030    if (dri2_dpy->config)
1031       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1032                                      "vblank_mode", &vblank_mode);
1033    switch (vblank_mode) {
1034    case DRI_CONF_VBLANK_NEVER:
1035       dri2_dpy->min_swap_interval = 0;
1036       dri2_dpy->max_swap_interval = 0;
1037       dri2_dpy->default_swap_interval = 0;
1038       break;
1039    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1040       dri2_dpy->min_swap_interval = 1;
1041       dri2_dpy->max_swap_interval = max_swap_interval;
1042       dri2_dpy->default_swap_interval = 1;
1043       break;
1044    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1045       dri2_dpy->min_swap_interval = 0;
1046       dri2_dpy->max_swap_interval = max_swap_interval;
1047       dri2_dpy->default_swap_interval = 0;
1048       break;
1049    default:
1050    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1051       dri2_dpy->min_swap_interval = 0;
1052       dri2_dpy->max_swap_interval = max_swap_interval;
1053       dri2_dpy->default_swap_interval = 1;
1054       break;
1055    }
1056 }
1057
1058 /* All platforms but DRM call this function to create the screen and populate
1059  * the driver_configs. DRM inherits that information from its display - GBM.
1060  */
1061 EGLBoolean
1062 dri2_create_screen(_EGLDisplay *disp)
1063 {
1064    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1065
1066    if (dri2_dpy->image_driver) {
1067       dri2_dpy->dri_screen =
1068          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
1069                                                   dri2_dpy->loader_extensions,
1070                                                   dri2_dpy->driver_extensions,
1071                                                   &dri2_dpy->driver_configs,
1072                                                   disp);
1073    } else if (dri2_dpy->dri2) {
1074       if (dri2_dpy->dri2->base.version >= 4) {
1075          dri2_dpy->dri_screen =
1076             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
1077                                              dri2_dpy->loader_extensions,
1078                                              dri2_dpy->driver_extensions,
1079                                              &dri2_dpy->driver_configs, disp);
1080       } else {
1081          dri2_dpy->dri_screen =
1082             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
1083                                             dri2_dpy->loader_extensions,
1084                                             &dri2_dpy->driver_configs, disp);
1085       }
1086    } else {
1087       assert(dri2_dpy->swrast);
1088       if (dri2_dpy->swrast->base.version >= 4) {
1089          dri2_dpy->dri_screen =
1090             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
1091                                                dri2_dpy->driver_extensions,
1092                                                &dri2_dpy->driver_configs, disp);
1093       } else {
1094          dri2_dpy->dri_screen =
1095             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
1096                                               &dri2_dpy->driver_configs, disp);
1097       }
1098    }
1099
1100    if (dri2_dpy->dri_screen == NULL) {
1101       _eglLog(_EGL_WARNING, "egl: failed to create dri2 screen");
1102       return EGL_FALSE;
1103    }
1104
1105    dri2_dpy->own_dri_screen = true;
1106    return EGL_TRUE;
1107 }
1108
1109 EGLBoolean
1110 dri2_setup_extensions(_EGLDisplay *disp)
1111 {
1112    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1113    const struct dri2_extension_match *mandatory_core_extensions;
1114    const __DRIextension **extensions;
1115
1116    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
1117
1118    if (dri2_dpy->image_driver || dri2_dpy->dri2)
1119       mandatory_core_extensions = dri2_core_extensions;
1120    else
1121       mandatory_core_extensions = swrast_core_extensions;
1122
1123    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
1124       return EGL_FALSE;
1125
1126 #ifdef HAVE_DRI3_MODIFIERS
1127    dri2_dpy->multibuffers_available =
1128       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
1129                                             dri2_dpy->dri3_minor_version >= 2)) &&
1130       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
1131                                                dri2_dpy->present_minor_version >= 2)) &&
1132       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
1133 #endif
1134
1135    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
1136    return EGL_TRUE;
1137 }
1138
1139 /**
1140  * Called via eglInitialize(), drv->Initialize().
1141  *
1142  * This must be guaranteed to be called exactly once, even if eglInitialize is
1143  * called many times (without a eglTerminate in between).
1144  */
1145 static EGLBoolean
1146 dri2_initialize(_EGLDisplay *disp)
1147 {
1148    EGLBoolean ret = EGL_FALSE;
1149    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1150
1151    /* In the case where the application calls eglMakeCurrent(context1),
1152     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
1153     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
1154     * initialized, as we need it to be able to free context1 correctly.
1155     *
1156     * It would probably be safest to forcibly release the display with
1157     * dri2_display_release, to make sure the display is reinitialized correctly.
1158     * However, the EGL spec states that we need to keep a reference to the
1159     * current context (so we cannot call dri2_make_current(NULL)), and therefore
1160     * we would leak context1 as we would be missing the old display connection
1161     * to free it up correctly.
1162     */
1163    if (dri2_dpy) {
1164       dri2_dpy->ref_count++;
1165       return EGL_TRUE;
1166    }
1167
1168    loader_set_logger(_eglLog);
1169
1170    switch (disp->Platform) {
1171    case _EGL_PLATFORM_SURFACELESS:
1172       ret = dri2_initialize_surfaceless(disp);
1173       break;
1174    case _EGL_PLATFORM_DEVICE:
1175       ret = dri2_initialize_device(disp);
1176       break;
1177    case _EGL_PLATFORM_X11:
1178    case _EGL_PLATFORM_XCB:
1179       ret = dri2_initialize_x11(disp);
1180       break;
1181    case _EGL_PLATFORM_DRM:
1182       ret = dri2_initialize_drm(disp);
1183       break;
1184    case _EGL_PLATFORM_WAYLAND:
1185       ret = dri2_initialize_wayland(disp);
1186       break;
1187    case _EGL_PLATFORM_ANDROID:
1188       ret = dri2_initialize_android(disp);
1189       break;
1190    default:
1191       unreachable("Callers ensure we cannot get here.");
1192       return EGL_FALSE;
1193    }
1194
1195    if (!ret)
1196       return EGL_FALSE;
1197
1198    dri2_dpy = dri2_egl_display(disp);
1199    dri2_dpy->ref_count++;
1200
1201    return EGL_TRUE;
1202 }
1203
1204 /**
1205  * Decrement display reference count, and free up display if necessary.
1206  */
1207 static void
1208 dri2_display_release(_EGLDisplay *disp)
1209 {
1210    struct dri2_egl_display *dri2_dpy;
1211
1212    if (!disp)
1213       return;
1214
1215    dri2_dpy = dri2_egl_display(disp);
1216
1217    assert(dri2_dpy->ref_count > 0);
1218    dri2_dpy->ref_count--;
1219
1220    if (dri2_dpy->ref_count > 0)
1221       return;
1222
1223    _eglCleanupDisplay(disp);
1224    dri2_display_destroy(disp);
1225 }
1226
1227 void
1228 dri2_display_destroy(_EGLDisplay *disp)
1229 {
1230    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1231
1232    if (dri2_dpy->own_dri_screen) {
1233       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
1234          dri2_dpy->vtbl->close_screen_notify(disp);
1235       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1236    }
1237    if (dri2_dpy->fd >= 0)
1238       close(dri2_dpy->fd);
1239
1240    /* Don't dlclose the driver when building with the address sanitizer, so you
1241     * get good symbols from the leak reports.
1242     */
1243 #if !BUILT_WITH_ASAN || defined(NDEBUG)
1244    if (dri2_dpy->driver)
1245       dlclose(dri2_dpy->driver);
1246 #endif
1247
1248    free(dri2_dpy->driver_name);
1249
1250 #ifdef HAVE_WAYLAND_PLATFORM
1251    free(dri2_dpy->device_name);
1252 #endif
1253
1254    switch (disp->Platform) {
1255    case _EGL_PLATFORM_X11:
1256       dri2_teardown_x11(dri2_dpy);
1257       break;
1258    case _EGL_PLATFORM_DRM:
1259       dri2_teardown_drm(dri2_dpy);
1260       break;
1261    case _EGL_PLATFORM_WAYLAND:
1262       dri2_teardown_wayland(dri2_dpy);
1263       break;
1264    default:
1265       /* TODO: add teardown for other platforms */
1266       break;
1267    }
1268
1269    /* The drm platform does not create the screen/driver_configs but reuses
1270     * the ones from the gbm device. As such the gbm itself is responsible
1271     * for the cleanup.
1272     */
1273    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1274       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1275          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1276       free(dri2_dpy->driver_configs);
1277    }
1278    free(dri2_dpy);
1279    disp->DriverData = NULL;
1280 }
1281
1282 __DRIbuffer *
1283 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1284                                     unsigned int att, unsigned int format)
1285 {
1286    struct dri2_egl_display *dri2_dpy =
1287       dri2_egl_display(dri2_surf->base.Resource.Display);
1288
1289    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1290       return NULL;
1291
1292    if (!dri2_surf->local_buffers[att]) {
1293       dri2_surf->local_buffers[att] =
1294          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1295                                         dri2_surf->base.Width, dri2_surf->base.Height);
1296    }
1297
1298    return dri2_surf->local_buffers[att];
1299 }
1300
1301 void
1302 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1303 {
1304    struct dri2_egl_display *dri2_dpy =
1305       dri2_egl_display(dri2_surf->base.Resource.Display);
1306
1307    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1308       if (dri2_surf->local_buffers[i]) {
1309          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1310                                        dri2_surf->local_buffers[i]);
1311          dri2_surf->local_buffers[i] = NULL;
1312       }
1313    }
1314 }
1315
1316 /**
1317  * Called via eglTerminate(), drv->Terminate().
1318  *
1319  * This must be guaranteed to be called exactly once, even if eglTerminate is
1320  * called many times (without a eglInitialize in between).
1321  */
1322 static EGLBoolean
1323 dri2_terminate(_EGLDisplay *disp)
1324 {
1325    /* Release all non-current Context/Surfaces. */
1326    _eglReleaseDisplayResources(disp);
1327
1328    dri2_display_release(disp);
1329
1330    return EGL_TRUE;
1331 }
1332
1333 /**
1334  * Set the error code after a call to
1335  * dri2_egl_display::dri2::createContextAttribs.
1336  */
1337 static void
1338 dri2_create_context_attribs_error(int dri_error)
1339 {
1340    EGLint egl_error;
1341
1342    switch (dri_error) {
1343    case __DRI_CTX_ERROR_SUCCESS:
1344       return;
1345
1346    case __DRI_CTX_ERROR_NO_MEMORY:
1347       egl_error = EGL_BAD_ALLOC;
1348       break;
1349
1350   /* From the EGL_KHR_create_context spec, section "Errors":
1351    *
1352    *   * If <config> does not support a client API context compatible
1353    *     with the requested API major and minor version, [...] context flags,
1354    *     and context reset notification behavior (for client API types where
1355    *     these attributes are supported), then an EGL_BAD_MATCH error is
1356    *     generated.
1357    *
1358    *   * If an OpenGL ES context is requested and the values for
1359    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1360    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1361    *     is not defined, than an EGL_BAD_MATCH error is generated.
1362    *
1363    *   * If an OpenGL context is requested, the requested version is
1364    *     greater than 3.2, and the value for attribute
1365    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1366    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1367    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1368    *     one of these bits set; or if the implementation does not support
1369    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1370    */
1371    case __DRI_CTX_ERROR_BAD_API:
1372    case __DRI_CTX_ERROR_BAD_VERSION:
1373    case __DRI_CTX_ERROR_BAD_FLAG:
1374       egl_error = EGL_BAD_MATCH;
1375       break;
1376
1377   /* From the EGL_KHR_create_context spec, section "Errors":
1378    *
1379    *   * If an attribute name or attribute value in <attrib_list> is not
1380    *     recognized (including unrecognized bits in bitmask attributes),
1381    *     then an EGL_BAD_ATTRIBUTE error is generated."
1382    */
1383    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1384    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1385       egl_error = EGL_BAD_ATTRIBUTE;
1386       break;
1387
1388    default:
1389       assert(!"unknown dri_error code");
1390       egl_error = EGL_BAD_MATCH;
1391       break;
1392    }
1393
1394    _eglError(egl_error, "dri2_create_context");
1395 }
1396
1397 static bool
1398 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1399                           struct dri2_egl_display *dri2_dpy,
1400                           uint32_t *ctx_attribs,
1401                           unsigned *num_attribs)
1402 {
1403    int pos = 0;
1404
1405    assert(*num_attribs >= NUM_ATTRIBS);
1406
1407    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1408    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1409    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1410    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1411
1412    if (dri2_ctx->base.Flags != 0) {
1413       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1414        * extension, don't even try to send it the robust-access flag.
1415        * It may explode.  Instead, generate the required EGL error here.
1416        */
1417       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1418             && !dri2_dpy->robustness) {
1419          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1420          return false;
1421       }
1422
1423       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1424       ctx_attribs[pos++] = dri2_ctx->base.Flags;
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    if (dri2_ctx->base.NoError) {
1469       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_NO_ERROR;
1470       ctx_attribs[pos++] = true;
1471    }
1472
1473    *num_attribs = pos;
1474
1475    return true;
1476 }
1477
1478 /**
1479  * Called via eglCreateContext(), drv->CreateContext().
1480  */
1481 static _EGLContext *
1482 dri2_create_context(_EGLDisplay *disp, _EGLConfig *conf,
1483                     _EGLContext *share_list, const EGLint *attrib_list)
1484 {
1485    struct dri2_egl_context *dri2_ctx;
1486    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1487    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1488    __DRIcontext *shared =
1489       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1490    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1491    const __DRIconfig *dri_config;
1492    int api;
1493    unsigned error;
1494    unsigned num_attribs = NUM_ATTRIBS;
1495    uint32_t ctx_attribs[NUM_ATTRIBS];
1496
1497    dri2_ctx = malloc(sizeof *dri2_ctx);
1498    if (!dri2_ctx) {
1499       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1500       return NULL;
1501    }
1502
1503    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1504       goto cleanup;
1505
1506    /* The EGL_EXT_create_context_robustness spec says:
1507     *
1508     *    "Add to the eglCreateContext context creation errors: [...]
1509     *
1510     *     * If the reset notification behavior of <share_context> and the
1511     *       newly created context are different then an EGL_BAD_MATCH error is
1512     *       generated."
1513     */
1514    if (share_list && share_list->ResetNotificationStrategy !=
1515                      dri2_ctx->base.ResetNotificationStrategy) {
1516       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1517       goto cleanup;
1518    }
1519
1520    /* The EGL_KHR_create_context_no_error spec says:
1521     *
1522     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1523     *    used to create <share_context> does not match the value of
1524     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1525     */
1526    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1527       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1528       goto cleanup;
1529    }
1530
1531    switch (dri2_ctx->base.ClientAPI) {
1532    case EGL_OPENGL_ES_API:
1533       switch (dri2_ctx->base.ClientMajorVersion) {
1534       case 1:
1535          api = __DRI_API_GLES;
1536          break;
1537       case 2:
1538          api = __DRI_API_GLES2;
1539          break;
1540       case 3:
1541          api = __DRI_API_GLES3;
1542          break;
1543       default:
1544          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1545          free(dri2_ctx);
1546          return NULL;
1547       }
1548       break;
1549    case EGL_OPENGL_API:
1550       if ((dri2_ctx->base.ClientMajorVersion >= 4
1551            || (dri2_ctx->base.ClientMajorVersion == 3
1552                && dri2_ctx->base.ClientMinorVersion >= 2))
1553           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1554          api = __DRI_API_OPENGL_CORE;
1555       else if (dri2_ctx->base.ClientMajorVersion == 3 &&
1556                dri2_ctx->base.ClientMinorVersion == 1)
1557          api = __DRI_API_OPENGL_CORE;
1558       else
1559          api = __DRI_API_OPENGL;
1560       break;
1561    default:
1562       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1563       free(dri2_ctx);
1564       return NULL;
1565    }
1566
1567    if (conf != NULL) {
1568       /* The config chosen here isn't necessarily
1569        * used for surfaces later.
1570        * A pixmap surface will use the single config.
1571        * This opportunity depends on disabling the
1572        * doubleBufferMode check in
1573        * src/mesa/main/context.c:check_compatible()
1574        */
1575       if (dri2_config->dri_config[1][0])
1576          dri_config = dri2_config->dri_config[1][0];
1577       else
1578          dri_config = dri2_config->dri_config[0][0];
1579    }
1580    else
1581       dri_config = NULL;
1582
1583    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1584                                   &num_attribs))
1585       goto cleanup;
1586
1587    if (dri2_dpy->image_driver) {
1588       dri2_ctx->dri_context =
1589          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1590                                                       api,
1591                                                       dri_config,
1592                                                       shared,
1593                                                       num_attribs / 2,
1594                                                       ctx_attribs,
1595                                                       & error,
1596                                                       dri2_ctx);
1597       dri2_create_context_attribs_error(error);
1598    } else if (dri2_dpy->dri2) {
1599       if (dri2_dpy->dri2->base.version >= 3) {
1600          dri2_ctx->dri_context =
1601             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1602                                                  api,
1603                                                  dri_config,
1604                                                  shared,
1605                                                  num_attribs / 2,
1606                                                  ctx_attribs,
1607                                                  & error,
1608                                                  dri2_ctx);
1609          dri2_create_context_attribs_error(error);
1610       } else {
1611          dri2_ctx->dri_context =
1612             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1613                                                    api,
1614                                                    dri_config,
1615                                                    shared,
1616                                                    dri2_ctx);
1617       }
1618    } else {
1619       assert(dri2_dpy->swrast);
1620       if (dri2_dpy->swrast->base.version >= 3) {
1621          dri2_ctx->dri_context =
1622             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1623                                                    api,
1624                                                    dri_config,
1625                                                    shared,
1626                                                    num_attribs / 2,
1627                                                    ctx_attribs,
1628                                                    & error,
1629                                                    dri2_ctx);
1630          dri2_create_context_attribs_error(error);
1631       } else {
1632          dri2_ctx->dri_context =
1633             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1634                                                      api,
1635                                                      dri_config,
1636                                                      shared,
1637                                                      dri2_ctx);
1638       }
1639    }
1640
1641    if (!dri2_ctx->dri_context)
1642       goto cleanup;
1643
1644    return &dri2_ctx->base;
1645
1646  cleanup:
1647    free(dri2_ctx);
1648    return NULL;
1649 }
1650
1651 /**
1652  * Called via eglDestroyContext(), drv->DestroyContext().
1653  */
1654 static EGLBoolean
1655 dri2_destroy_context(_EGLDisplay *disp, _EGLContext *ctx)
1656 {
1657    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1658    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1659
1660    if (_eglPutContext(ctx)) {
1661       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1662       free(dri2_ctx);
1663    }
1664
1665    return EGL_TRUE;
1666 }
1667
1668 EGLBoolean
1669 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1670         _EGLConfig *conf, const EGLint *attrib_list,
1671         EGLBoolean enable_out_fence, void *native_surface)
1672 {
1673    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1674    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1675
1676    dri2_surf->out_fence_fd = -1;
1677    dri2_surf->enable_out_fence = false;
1678    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1679        dri2_dpy->fence->get_capabilities &&
1680        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1681         __DRI_FENCE_CAP_NATIVE_FD)) {
1682       dri2_surf->enable_out_fence = enable_out_fence;
1683    }
1684
1685    return _eglInitSurface(surf, disp, type, conf, attrib_list, native_surface);
1686 }
1687
1688 static void
1689 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1690 {
1691    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1692
1693    if (dri2_surf->out_fence_fd >= 0)
1694       close(dri2_surf->out_fence_fd);
1695
1696    dri2_surf->out_fence_fd = fence_fd;
1697 }
1698
1699 void
1700 dri2_fini_surface(_EGLSurface *surf)
1701 {
1702    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1703
1704    dri2_surface_set_out_fence_fd(surf, -1);
1705    dri2_surf->enable_out_fence = false;
1706 }
1707
1708 static EGLBoolean
1709 dri2_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
1710 {
1711    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1712
1713    if (!_eglPutSurface(surf))
1714       return EGL_TRUE;
1715
1716    return dri2_dpy->vtbl->destroy_surface(disp, surf);
1717 }
1718
1719 static void
1720 dri2_surf_update_fence_fd(_EGLContext *ctx,
1721                           _EGLDisplay *disp, _EGLSurface *surf)
1722 {
1723    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1724    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1725    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1726    int fence_fd = -1;
1727    void *fence;
1728
1729    if (!dri2_surf->enable_out_fence)
1730       return;
1731
1732    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1733    if (fence) {
1734       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1735                                                fence);
1736       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1737    }
1738    dri2_surface_set_out_fence_fd(surf, fence_fd);
1739 }
1740
1741 EGLBoolean
1742 dri2_create_drawable(struct dri2_egl_display *dri2_dpy,
1743                      const __DRIconfig *config,
1744                      struct dri2_egl_surface *dri2_surf,
1745                      void *loaderPrivate)
1746 {
1747    if (dri2_dpy->kopper) {
1748       dri2_surf->dri_drawable =
1749           dri2_dpy->kopper->createNewDrawable(dri2_dpy->dri_screen, config, loaderPrivate,
1750                                               dri2_surf->base.Type == EGL_PBUFFER_BIT ||
1751                                               dri2_surf->base.Type == EGL_PIXMAP_BIT);
1752    } else {
1753       __DRIcreateNewDrawableFunc createNewDrawable;
1754       if (dri2_dpy->image_driver)
1755          createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
1756       else if (dri2_dpy->dri2)
1757          createNewDrawable = dri2_dpy->dri2->createNewDrawable;
1758       else if (dri2_dpy->swrast)
1759          createNewDrawable = dri2_dpy->swrast->createNewDrawable;
1760       else
1761          return _eglError(EGL_BAD_ALLOC, "no createNewDrawable");
1762
1763       dri2_surf->dri_drawable = createNewDrawable(dri2_dpy->dri_screen,
1764                                                   config, loaderPrivate);
1765    }
1766    if (dri2_surf->dri_drawable == NULL)
1767       return _eglError(EGL_BAD_ALLOC, "createNewDrawable");
1768
1769    return EGL_TRUE;
1770 }
1771
1772 /**
1773  * Called via eglMakeCurrent(), drv->MakeCurrent().
1774  */
1775 static EGLBoolean
1776 dri2_make_current(_EGLDisplay *disp, _EGLSurface *dsurf,
1777                   _EGLSurface *rsurf, _EGLContext *ctx)
1778 {
1779    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1780    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1781    _EGLDisplay *old_disp = NULL;
1782    struct dri2_egl_display *old_dri2_dpy = NULL;
1783    _EGLContext *old_ctx;
1784    _EGLSurface *old_dsurf, *old_rsurf;
1785    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1786    __DRIdrawable *ddraw, *rdraw;
1787    __DRIcontext *cctx;
1788    EGLint egl_error = EGL_SUCCESS;
1789
1790    if (!dri2_dpy)
1791       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1792
1793    /* make new bindings, set the EGL error otherwise */
1794    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
1795       return EGL_FALSE;
1796
1797    if (old_ctx == ctx && old_dsurf == dsurf && old_rsurf == rsurf) {
1798       _eglPutSurface(old_dsurf);
1799       _eglPutSurface(old_rsurf);
1800       _eglPutContext(old_ctx);
1801       return EGL_TRUE;
1802    }
1803
1804    if (old_ctx) {
1805       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1806       old_disp = old_ctx->Resource.Display;
1807       old_dri2_dpy = dri2_egl_display(old_disp);
1808
1809       /* Disable shared buffer mode */
1810       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1811           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1812          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1813       }
1814
1815       dri2_dpy->core->unbindContext(old_cctx);
1816
1817       if (old_dsurf)
1818          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1819    }
1820
1821    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1822    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1823    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1824
1825    if (cctx || ddraw || rdraw) {
1826       if (!dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1827          _EGLContext *tmp_ctx;
1828
1829          /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1830           * setting the error to EGL_BAD_MATCH is surely better than leaving it
1831           * as EGL_SUCCESS.
1832           */
1833          egl_error = EGL_BAD_MATCH;
1834
1835          /* undo the previous _eglBindContext */
1836          _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1837          assert(&dri2_ctx->base == ctx &&
1838                 tmp_dsurf == dsurf &&
1839                 tmp_rsurf == rsurf);
1840
1841          _eglPutSurface(dsurf);
1842          _eglPutSurface(rsurf);
1843          _eglPutContext(ctx);
1844
1845          _eglPutSurface(old_dsurf);
1846          _eglPutSurface(old_rsurf);
1847          _eglPutContext(old_ctx);
1848
1849          ddraw = (old_dsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_dsurf) : NULL;
1850          rdraw = (old_rsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_rsurf) : NULL;
1851          cctx = (old_ctx) ? dri2_egl_context(old_ctx)->dri_context : NULL;
1852
1853          /* undo the previous dri2_dpy->core->unbindContext */
1854          if (dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1855             if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1856                 old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1857                old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1858             }
1859
1860             return _eglError(egl_error, "eglMakeCurrent");
1861          }
1862
1863          /* We cannot restore the same state as it was before calling
1864           * eglMakeCurrent() and the spec isn't clear about what to do. We
1865           * can prevent EGL from calling into the DRI driver with no DRI
1866           * context bound.
1867           */
1868          dsurf = rsurf = NULL;
1869          ctx = NULL;
1870
1871          _eglBindContext(ctx, dsurf, rsurf, &tmp_ctx, &tmp_dsurf, &tmp_rsurf);
1872          assert(tmp_ctx == old_ctx && tmp_dsurf == old_dsurf &&
1873                 tmp_rsurf == old_rsurf);
1874
1875          _eglLog(_EGL_WARNING, "DRI2: failed to rebind the previous context");
1876       } else {
1877          /* dri2_dpy->core->bindContext succeeded, so take a reference on the
1878           * dri2_dpy. This prevents dri2_dpy from being reinitialized when a
1879           * EGLDisplay is terminated and then initialized again while a
1880           * context is still bound. See dri2_intitialize() for a more in depth
1881           * explanation. */
1882          dri2_dpy->ref_count++;
1883       }
1884    }
1885
1886    dri2_destroy_surface(disp, old_dsurf);
1887    dri2_destroy_surface(disp, old_rsurf);
1888
1889    if (old_ctx) {
1890       dri2_destroy_context(disp, old_ctx);
1891       dri2_display_release(old_disp);
1892    }
1893
1894    if (egl_error != EGL_SUCCESS)
1895       return _eglError(egl_error, "eglMakeCurrent");
1896
1897    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1898        dri2_dpy->vtbl->set_shared_buffer_mode) {
1899       /* Always update the shared buffer mode. This is obviously needed when
1900        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1901        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1902        * case where external non-EGL API may have changed window's shared
1903        * buffer mode since we last saw it.
1904        */
1905       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1906       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1907    }
1908
1909    return EGL_TRUE;
1910 }
1911
1912 __DRIdrawable *
1913 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1914 {
1915    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1916
1917    return dri2_surf->dri_drawable;
1918 }
1919
1920 /*
1921  * Called from eglGetProcAddress() via drv->GetProcAddress().
1922  */
1923 static _EGLProc
1924 dri2_get_proc_address(const char *procname)
1925 {
1926    return _glapi_get_proc_address(procname);
1927 }
1928
1929 static _EGLSurface*
1930 dri2_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
1931                            void *native_window, const EGLint *attrib_list)
1932 {
1933    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1934    return dri2_dpy->vtbl->create_window_surface(disp, conf, native_window,
1935                                                 attrib_list);
1936 }
1937
1938 static _EGLSurface*
1939 dri2_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
1940                            void *native_pixmap, const EGLint *attrib_list)
1941 {
1942    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1943    if (!dri2_dpy->vtbl->create_pixmap_surface)
1944       return NULL;
1945    return dri2_dpy->vtbl->create_pixmap_surface(disp, conf, native_pixmap,
1946                                                 attrib_list);
1947 }
1948
1949 static _EGLSurface*
1950 dri2_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
1951                             const EGLint *attrib_list)
1952 {
1953    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1954    if (!dri2_dpy->vtbl->create_pbuffer_surface)
1955       return NULL;
1956    return dri2_dpy->vtbl->create_pbuffer_surface(disp, conf, attrib_list);
1957 }
1958
1959 static EGLBoolean
1960 dri2_swap_interval(_EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
1961 {
1962    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1963    if (!dri2_dpy->vtbl->swap_interval)
1964       return EGL_TRUE;
1965    return dri2_dpy->vtbl->swap_interval(disp, surf, interval);
1966 }
1967
1968 /**
1969  * Asks the client API to flush any rendering to the drawable so that we can
1970  * do our swapbuffers.
1971  */
1972 void
1973 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1974 {
1975    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1976    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1977
1978    if (dri2_dpy->flush) {
1979       if (dri2_dpy->flush->base.version >= 4) {
1980          /* We know there's a current context because:
1981           *
1982           *     "If surface is not bound to the calling thread’s current
1983           *      context, an EGL_BAD_SURFACE error is generated."
1984          */
1985          _EGLContext *ctx = _eglGetCurrentContext();
1986          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1987
1988          /* From the EGL 1.4 spec (page 52):
1989           *
1990           *     "The contents of ancillary buffers are always undefined
1991           *      after calling eglSwapBuffers."
1992           */
1993          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1994                                            dri_drawable,
1995                                            __DRI2_FLUSH_DRAWABLE |
1996                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1997                                            __DRI2_THROTTLE_SWAPBUFFER);
1998       } else {
1999          dri2_dpy->flush->flush(dri_drawable);
2000       }
2001    }
2002 }
2003
2004 static EGLBoolean
2005 dri2_swap_buffers(_EGLDisplay *disp, _EGLSurface *surf)
2006 {
2007    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2008    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2009    _EGLContext *ctx = _eglGetCurrentContext();
2010    EGLBoolean ret;
2011
2012    if (ctx && surf)
2013       dri2_surf_update_fence_fd(ctx, disp, surf);
2014    ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2015
2016    /* SwapBuffers marks the end of the frame; reset the damage region for
2017     * use again next time.
2018     */
2019    if (ret && dri2_dpy->buffer_damage &&
2020        dri2_dpy->buffer_damage->set_damage_region)
2021       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2022
2023    return ret;
2024 }
2025
2026 static EGLBoolean
2027 dri2_swap_buffers_with_damage(_EGLDisplay *disp, _EGLSurface *surf,
2028                               const EGLint *rects, EGLint n_rects)
2029 {
2030    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2031    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2032    _EGLContext *ctx = _eglGetCurrentContext();
2033    EGLBoolean ret;
2034
2035    if (ctx && surf)
2036       dri2_surf_update_fence_fd(ctx, disp, surf);
2037    if (dri2_dpy->vtbl->swap_buffers_with_damage)
2038       ret = dri2_dpy->vtbl->swap_buffers_with_damage(disp, surf,
2039                                                      rects, n_rects);
2040    else
2041       ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2042
2043    /* SwapBuffers marks the end of the frame; reset the damage region for
2044     * use again next time.
2045     */
2046    if (ret && dri2_dpy->buffer_damage &&
2047        dri2_dpy->buffer_damage->set_damage_region)
2048       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2049
2050    return ret;
2051 }
2052
2053 static EGLBoolean
2054 dri2_swap_buffers_region(_EGLDisplay *disp, _EGLSurface *surf,
2055                          EGLint numRects, const EGLint *rects)
2056 {
2057    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2058    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2059    EGLBoolean ret;
2060
2061    if (!dri2_dpy->vtbl->swap_buffers_region)
2062       return EGL_FALSE;
2063    ret = dri2_dpy->vtbl->swap_buffers_region(disp, surf, numRects, rects);
2064
2065    /* SwapBuffers marks the end of the frame; reset the damage region for
2066     * use again next time.
2067     */
2068    if (ret && dri2_dpy->buffer_damage &&
2069        dri2_dpy->buffer_damage->set_damage_region)
2070       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2071
2072    return ret;
2073 }
2074
2075 static EGLBoolean
2076 dri2_set_damage_region(_EGLDisplay *disp, _EGLSurface *surf,
2077                        EGLint *rects, EGLint n_rects)
2078 {
2079    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2080    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2081
2082    if (!dri2_dpy->buffer_damage || !dri2_dpy->buffer_damage->set_damage_region)
2083       return EGL_FALSE;
2084
2085    dri2_dpy->buffer_damage->set_damage_region(drawable, n_rects, rects);
2086    return EGL_TRUE;
2087 }
2088
2089 static EGLBoolean
2090 dri2_post_sub_buffer(_EGLDisplay *disp, _EGLSurface *surf,
2091                      EGLint x, EGLint y, EGLint width, EGLint height)
2092 {
2093    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2094    if (!dri2_dpy->vtbl->post_sub_buffer)
2095       return EGL_FALSE;
2096    return dri2_dpy->vtbl->post_sub_buffer(disp, surf, x, y, width, height);
2097 }
2098
2099 static EGLBoolean
2100 dri2_copy_buffers(_EGLDisplay *disp, _EGLSurface *surf, void *native_pixmap_target)
2101 {
2102    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2103    if (!dri2_dpy->vtbl->copy_buffers)
2104       return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
2105    return dri2_dpy->vtbl->copy_buffers(disp, surf, native_pixmap_target);
2106 }
2107
2108 static EGLint
2109 dri2_query_buffer_age(_EGLDisplay *disp, _EGLSurface *surf)
2110 {
2111    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2112    if (!dri2_dpy->vtbl->query_buffer_age)
2113       return 0;
2114    return dri2_dpy->vtbl->query_buffer_age(disp, surf);
2115 }
2116
2117 static EGLBoolean
2118 dri2_wait_client(_EGLDisplay *disp, _EGLContext *ctx)
2119 {
2120    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2121    _EGLSurface *surf = ctx->DrawSurface;
2122    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2123
2124    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
2125     * we need to copy fake to real here.*/
2126
2127    if (dri2_dpy->flush != NULL)
2128       dri2_dpy->flush->flush(dri_drawable);
2129
2130    return EGL_TRUE;
2131 }
2132
2133 static EGLBoolean
2134 dri2_wait_native(EGLint engine)
2135 {
2136    if (engine != EGL_CORE_NATIVE_ENGINE)
2137       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
2138    /* glXWaitX(); */
2139
2140    return EGL_TRUE;
2141 }
2142
2143 static EGLBoolean
2144 dri2_bind_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2145 {
2146    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2147    struct dri2_egl_context *dri2_ctx;
2148    _EGLContext *ctx;
2149    GLint format, target;
2150    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2151
2152    ctx = _eglGetCurrentContext();
2153    dri2_ctx = dri2_egl_context(ctx);
2154
2155    if (!_eglBindTexImage(disp, surf, buffer))
2156       return EGL_FALSE;
2157
2158    switch (surf->TextureFormat) {
2159    case EGL_TEXTURE_RGB:
2160       format = __DRI_TEXTURE_FORMAT_RGB;
2161       break;
2162    case EGL_TEXTURE_RGBA:
2163       format = __DRI_TEXTURE_FORMAT_RGBA;
2164       break;
2165    default:
2166       assert(!"Unexpected texture format in dri2_bind_tex_image()");
2167       format = __DRI_TEXTURE_FORMAT_RGBA;
2168    }
2169
2170    switch (surf->TextureTarget) {
2171    case EGL_TEXTURE_2D:
2172       target = GL_TEXTURE_2D;
2173       break;
2174    default:
2175       target = GL_TEXTURE_2D;
2176       assert(!"Unexpected texture target in dri2_bind_tex_image()");
2177    }
2178
2179    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
2180                                        target, format,
2181                                        dri_drawable);
2182
2183    return EGL_TRUE;
2184 }
2185
2186 static EGLBoolean
2187 dri2_release_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2188 {
2189    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2190    struct dri2_egl_context *dri2_ctx;
2191    _EGLContext *ctx;
2192    GLint  target;
2193    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2194
2195    ctx = _eglGetCurrentContext();
2196    dri2_ctx = dri2_egl_context(ctx);
2197
2198    if (!_eglReleaseTexImage(disp, surf, buffer))
2199       return EGL_FALSE;
2200
2201    switch (surf->TextureTarget) {
2202    case EGL_TEXTURE_2D:
2203       target = GL_TEXTURE_2D;
2204       break;
2205    default:
2206       assert(!"missing texture target");
2207    }
2208
2209    if (dri2_dpy->tex_buffer->base.version >= 3 &&
2210        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
2211       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
2212                                              target, dri_drawable);
2213    }
2214
2215    return EGL_TRUE;
2216 }
2217
2218 static _EGLImage*
2219 dri2_create_image(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
2220                   EGLClientBuffer buffer, const EGLint *attr_list)
2221 {
2222    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2223    return dri2_dpy->vtbl->create_image(disp, ctx, target, buffer,
2224                                        attr_list);
2225 }
2226
2227 _EGLImage *
2228 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
2229 {
2230    struct dri2_egl_image *dri2_img;
2231
2232    if (dri_image == NULL) {
2233       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2234       return NULL;
2235    }
2236
2237    dri2_img = malloc(sizeof *dri2_img);
2238    if (!dri2_img) {
2239       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2240       return NULL;
2241    }
2242
2243    _eglInitImage(&dri2_img->base, disp);
2244
2245    dri2_img->dri_image = dri_image;
2246
2247    return &dri2_img->base;
2248 }
2249
2250 /**
2251  * Translate a DRI Image extension error code into an EGL error code.
2252  */
2253 static EGLint
2254 egl_error_from_dri_image_error(int dri_error)
2255 {
2256    switch (dri_error) {
2257    case __DRI_IMAGE_ERROR_SUCCESS:
2258       return EGL_SUCCESS;
2259    case __DRI_IMAGE_ERROR_BAD_ALLOC:
2260       return EGL_BAD_ALLOC;
2261    case __DRI_IMAGE_ERROR_BAD_MATCH:
2262       return EGL_BAD_MATCH;
2263    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
2264       return EGL_BAD_PARAMETER;
2265    case __DRI_IMAGE_ERROR_BAD_ACCESS:
2266       return EGL_BAD_ACCESS;
2267    default:
2268       assert(!"unknown dri_error code");
2269       return EGL_BAD_ALLOC;
2270    }
2271 }
2272
2273 static _EGLImage *
2274 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
2275                                    EGLClientBuffer buffer,
2276                                    const EGLint *attr_list)
2277 {
2278    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2279    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2280    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
2281    __DRIimage *dri_image;
2282
2283    if (renderbuffer == 0) {
2284       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2285       return EGL_NO_IMAGE_KHR;
2286    }
2287
2288    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
2289       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2290       return EGL_NO_IMAGE_KHR;
2291    }
2292
2293    if (dri2_dpy->image->base.version >= 17 &&
2294        dri2_dpy->image->createImageFromRenderbuffer2) {
2295       unsigned error = ~0;
2296
2297       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
2298                dri2_ctx->dri_context, renderbuffer, NULL, &error);
2299
2300       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
2301
2302       if (!dri_image) {
2303          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
2304          return EGL_NO_IMAGE_KHR;
2305       }
2306    } else {
2307       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
2308                dri2_ctx->dri_context, renderbuffer, NULL);
2309       if (!dri_image) {
2310          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2311          return EGL_NO_IMAGE_KHR;
2312       }
2313    }
2314
2315    return dri2_create_image_from_dri(disp, dri_image);
2316 }
2317
2318 #ifdef HAVE_WAYLAND_PLATFORM
2319
2320 /* This structure describes how a wl_buffer maps to one or more
2321  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
2322  * offsets and strides of the planes in the buffer.  This table maps a
2323  * wl_drm format code to a description of the planes in the buffer
2324  * that lets us create a __DRIimage for each of the planes. */
2325
2326 static const struct wl_drm_components_descriptor {
2327    uint32_t dri_components;
2328    EGLint components;
2329    int nplanes;
2330 } wl_drm_components[] = {
2331    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
2332    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
2333    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
2334    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
2335    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
2336 };
2337
2338 static _EGLImage *
2339 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2340                                     EGLClientBuffer _buffer,
2341                                     const EGLint *attr_list)
2342 {
2343    struct wl_drm_buffer *buffer;
2344    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2345    const struct wl_drm_components_descriptor *f;
2346    __DRIimage *dri_image;
2347    _EGLImageAttribs attrs;
2348    int32_t plane;
2349
2350    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
2351                                    (struct wl_resource *) _buffer);
2352    if (!buffer)
2353        return NULL;
2354
2355    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2356       return NULL;
2357
2358    plane = attrs.PlaneWL;
2359    f = buffer->driver_format;
2360    if (plane < 0 || plane >= f->nplanes) {
2361       _eglError(EGL_BAD_PARAMETER,
2362                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2363       return NULL;
2364    }
2365
2366    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2367    if (dri_image == NULL && plane == 0)
2368       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
2369    if (dri_image == NULL) {
2370       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2371       return NULL;
2372    }
2373
2374    return dri2_create_image_from_dri(disp, dri_image);
2375 }
2376 #endif
2377
2378 static EGLBoolean
2379 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
2380                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2381                               EGLuint64KHR *sbc)
2382 {
2383    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2384    if (!dri2_dpy->vtbl->get_sync_values)
2385       return EGL_FALSE;
2386    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
2387 }
2388
2389 /**
2390  * Set the error code after a call to
2391  * dri2_egl_image::dri_image::createImageFromTexture.
2392  */
2393 static void
2394 dri2_create_image_khr_texture_error(int dri_error)
2395 {
2396    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2397
2398    if (egl_error != EGL_SUCCESS)
2399       _eglError(egl_error, "dri2_create_image_khr_texture");
2400 }
2401
2402 static _EGLImage *
2403 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2404                                    EGLenum target,
2405                                    EGLClientBuffer buffer,
2406                                    const EGLint *attr_list)
2407 {
2408    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2409    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2410    struct dri2_egl_image *dri2_img;
2411    GLuint texture = (GLuint) (uintptr_t) buffer;
2412    _EGLImageAttribs attrs;
2413    GLuint depth;
2414    GLenum gl_target;
2415    unsigned error;
2416
2417    if (texture == 0) {
2418       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2419       return EGL_NO_IMAGE_KHR;
2420    }
2421
2422    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2423       return EGL_NO_IMAGE_KHR;
2424
2425    switch (target) {
2426    case EGL_GL_TEXTURE_2D_KHR:
2427       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2428          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2429          return EGL_NO_IMAGE_KHR;
2430       }
2431       depth = 0;
2432       gl_target = GL_TEXTURE_2D;
2433       break;
2434    case EGL_GL_TEXTURE_3D_KHR:
2435       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2436          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2437          return EGL_NO_IMAGE_KHR;
2438       }
2439
2440       depth = attrs.GLTextureZOffset;
2441       gl_target = GL_TEXTURE_3D;
2442       break;
2443    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2444    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2445    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2446    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2447    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2448    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2449       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2450          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2451          return EGL_NO_IMAGE_KHR;
2452       }
2453
2454       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2455       gl_target = GL_TEXTURE_CUBE_MAP;
2456       break;
2457    default:
2458       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2459       return EGL_NO_IMAGE_KHR;
2460    }
2461
2462    dri2_img = malloc(sizeof *dri2_img);
2463    if (!dri2_img) {
2464       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2465       return EGL_NO_IMAGE_KHR;
2466    }
2467
2468    _eglInitImage(&dri2_img->base, disp);
2469
2470    dri2_img->dri_image =
2471       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2472                                               gl_target,
2473                                               texture,
2474                                               depth,
2475                                               attrs.GLTextureLevel,
2476                                               &error,
2477                                               NULL);
2478    dri2_create_image_khr_texture_error(error);
2479
2480    if (!dri2_img->dri_image) {
2481       free(dri2_img);
2482       return EGL_NO_IMAGE_KHR;
2483    }
2484    return &dri2_img->base;
2485 }
2486
2487 static EGLBoolean
2488 dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
2489                    EGLint attribute, EGLint *value)
2490 {
2491    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2492    if (!dri2_dpy->vtbl->query_surface)
2493       return _eglQuerySurface(disp, surf, attribute, value);
2494    return dri2_dpy->vtbl->query_surface(disp, surf, attribute, value);
2495 }
2496
2497 static struct wl_buffer*
2498 dri2_create_wayland_buffer_from_image(_EGLDisplay *disp, _EGLImage *img)
2499 {
2500    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2501    if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
2502       return NULL;
2503    return dri2_dpy->vtbl->create_wayland_buffer_from_image(disp, img);
2504 }
2505
2506 #ifdef HAVE_LIBDRM
2507 static _EGLImage *
2508 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2509                                   EGLClientBuffer buffer, const EGLint *attr_list)
2510 {
2511    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2512    EGLint format, name, pitch;
2513    _EGLImageAttribs attrs;
2514    __DRIimage *dri_image;
2515
2516    name = (EGLint) (uintptr_t) buffer;
2517
2518    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2519       return NULL;
2520
2521    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2522        attrs.DRMBufferStrideMESA <= 0) {
2523       _eglError(EGL_BAD_PARAMETER,
2524                 "bad width, height or stride");
2525       return NULL;
2526    }
2527
2528    switch (attrs.DRMBufferFormatMESA) {
2529    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2530       format = __DRI_IMAGE_FORMAT_ARGB8888;
2531       pitch = attrs.DRMBufferStrideMESA;
2532       break;
2533    default:
2534       _eglError(EGL_BAD_PARAMETER,
2535                 "dri2_create_image_khr: unsupported pixmap depth");
2536       return NULL;
2537    }
2538
2539    dri_image =
2540       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2541                                            attrs.Width,
2542                                            attrs.Height,
2543                                            format,
2544                                            name,
2545                                            pitch,
2546                                            NULL);
2547
2548    return dri2_create_image_from_dri(disp, dri_image);
2549 }
2550
2551 static EGLBoolean
2552 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2553 {
2554    /**
2555      * The spec says:
2556      *
2557      * "Required attributes and their values are as follows:
2558      *
2559      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2560      *
2561      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2562      *    by drm_fourcc.h and used as the pixel_format parameter of the
2563      *    drm_mode_fb_cmd2 ioctl."
2564      *
2565      * and
2566      *
2567      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2568      *    incomplete, EGL_BAD_PARAMETER is generated."
2569      */
2570    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2571        !attrs->DMABufFourCC.IsPresent)
2572       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2573
2574    /**
2575     * Also:
2576     *
2577     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2578     *  specified for a plane's pitch or offset isn't supported by EGL,
2579     *  EGL_BAD_ACCESS is generated."
2580     */
2581    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2582       if (attrs->DMABufPlanePitches[i].IsPresent &&
2583           attrs->DMABufPlanePitches[i].Value <= 0)
2584          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2585    }
2586
2587    /**
2588     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2589     * attribute values may be given.
2590     *
2591     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2592     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2593     */
2594    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2595       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2596           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2597          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2598    }
2599
2600    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2601     * mandate it, we only accept the same modifier across all planes. */
2602    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2603       if (attrs->DMABufPlaneFds[i].IsPresent) {
2604          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2605                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2606              (attrs->DMABufPlaneModifiersLo[0].Value !=
2607                attrs->DMABufPlaneModifiersLo[i].Value) ||
2608              (attrs->DMABufPlaneModifiersHi[0].Value !=
2609                attrs->DMABufPlaneModifiersHi[i].Value))
2610             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2611       }
2612    }
2613
2614    return EGL_TRUE;
2615 }
2616
2617 /* Returns the total number of planes for the format or zero if it isn't a
2618  * valid fourcc format.
2619  */
2620 static unsigned
2621 dri2_num_fourcc_format_planes(EGLint format)
2622 {
2623    switch (format) {
2624    case DRM_FORMAT_R8:
2625    case DRM_FORMAT_RG88:
2626    case DRM_FORMAT_GR88:
2627    case DRM_FORMAT_R16:
2628    case DRM_FORMAT_GR1616:
2629    case DRM_FORMAT_RGB332:
2630    case DRM_FORMAT_BGR233:
2631    case DRM_FORMAT_XRGB4444:
2632    case DRM_FORMAT_XBGR4444:
2633    case DRM_FORMAT_RGBX4444:
2634    case DRM_FORMAT_BGRX4444:
2635    case DRM_FORMAT_ARGB4444:
2636    case DRM_FORMAT_ABGR4444:
2637    case DRM_FORMAT_RGBA4444:
2638    case DRM_FORMAT_BGRA4444:
2639    case DRM_FORMAT_XRGB1555:
2640    case DRM_FORMAT_XBGR1555:
2641    case DRM_FORMAT_RGBX5551:
2642    case DRM_FORMAT_BGRX5551:
2643    case DRM_FORMAT_ARGB1555:
2644    case DRM_FORMAT_ABGR1555:
2645    case DRM_FORMAT_RGBA5551:
2646    case DRM_FORMAT_BGRA5551:
2647    case DRM_FORMAT_RGB565:
2648    case DRM_FORMAT_BGR565:
2649    case DRM_FORMAT_RGB888:
2650    case DRM_FORMAT_BGR888:
2651    case DRM_FORMAT_XRGB8888:
2652    case DRM_FORMAT_XBGR8888:
2653    case DRM_FORMAT_RGBX8888:
2654    case DRM_FORMAT_BGRX8888:
2655    case DRM_FORMAT_ARGB8888:
2656    case DRM_FORMAT_ABGR8888:
2657    case DRM_FORMAT_RGBA8888:
2658    case DRM_FORMAT_BGRA8888:
2659    case DRM_FORMAT_XRGB2101010:
2660    case DRM_FORMAT_XBGR2101010:
2661    case DRM_FORMAT_RGBX1010102:
2662    case DRM_FORMAT_BGRX1010102:
2663    case DRM_FORMAT_ARGB2101010:
2664    case DRM_FORMAT_ABGR2101010:
2665    case DRM_FORMAT_RGBA1010102:
2666    case DRM_FORMAT_BGRA1010102:
2667    case DRM_FORMAT_XBGR16161616F:
2668    case DRM_FORMAT_ABGR16161616F:
2669    case DRM_FORMAT_YUYV:
2670    case DRM_FORMAT_YVYU:
2671    case DRM_FORMAT_UYVY:
2672    case DRM_FORMAT_VYUY:
2673    case DRM_FORMAT_AYUV:
2674    case DRM_FORMAT_XYUV8888:
2675    case DRM_FORMAT_Y210:
2676    case DRM_FORMAT_Y212:
2677    case DRM_FORMAT_Y216:
2678    case DRM_FORMAT_Y410:
2679    case DRM_FORMAT_Y412:
2680    case DRM_FORMAT_Y416:
2681       return 1;
2682
2683    case DRM_FORMAT_NV12:
2684    case DRM_FORMAT_NV21:
2685    case DRM_FORMAT_NV16:
2686    case DRM_FORMAT_NV61:
2687    case DRM_FORMAT_P010:
2688    case DRM_FORMAT_P012:
2689    case DRM_FORMAT_P016:
2690       return 2;
2691
2692    case DRM_FORMAT_YUV410:
2693    case DRM_FORMAT_YVU410:
2694    case DRM_FORMAT_YUV411:
2695    case DRM_FORMAT_YVU411:
2696    case DRM_FORMAT_YUV420:
2697    case DRM_FORMAT_YVU420:
2698    case DRM_FORMAT_YUV422:
2699    case DRM_FORMAT_YVU422:
2700    case DRM_FORMAT_YUV444:
2701    case DRM_FORMAT_YVU444:
2702       return 3;
2703
2704    default:
2705       return 0;
2706    }
2707 }
2708
2709 /* Returns the total number of file descriptors. Zero indicates an error. */
2710 static unsigned
2711 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2712 {
2713    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2714    if (plane_n == 0) {
2715       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2716       return 0;
2717    }
2718
2719    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2720       /**
2721        * The modifiers extension spec says:
2722        *
2723        * "Modifiers may modify any attribute of a buffer import, including
2724        *  but not limited to adding extra planes to a format which
2725        *  otherwise does not have those planes. As an example, a modifier
2726        *  may add a plane for an external compression buffer to a
2727        *  single-plane format. The exact meaning and effect of any
2728        *  modifier is canonically defined by drm_fourcc.h, not as part of
2729        *  this extension."
2730        */
2731       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2732           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2733          plane_n = i + 1;
2734       }
2735    }
2736
2737    /**
2738      * The spec says:
2739      *
2740      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2741      *    incomplete, EGL_BAD_PARAMETER is generated."
2742      */
2743    for (unsigned i = 0; i < plane_n; ++i) {
2744       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2745           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2746           !attrs->DMABufPlanePitches[i].IsPresent) {
2747          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2748          return 0;
2749       }
2750    }
2751
2752    /**
2753     * The spec also says:
2754     *
2755     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2756     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2757     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2758     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2759     */
2760    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2761       if (attrs->DMABufPlaneFds[i].IsPresent ||
2762           attrs->DMABufPlaneOffsets[i].IsPresent ||
2763           attrs->DMABufPlanePitches[i].IsPresent) {
2764          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2765          return 0;
2766       }
2767    }
2768
2769    return plane_n;
2770 }
2771
2772 static EGLBoolean
2773 dri2_query_dma_buf_formats(_EGLDisplay *disp, EGLint max,
2774                            EGLint *formats, EGLint *count)
2775 {
2776    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2777    if (max < 0 || (max > 0 && formats == NULL))
2778       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2779
2780    if (dri2_dpy->image->base.version < 15 ||
2781        dri2_dpy->image->queryDmaBufFormats == NULL)
2782       return EGL_FALSE;
2783
2784    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2785                                             formats, count))
2786       return EGL_FALSE;
2787
2788    if (max > 0) {
2789       /* Assert that all of the formats returned are actually fourcc formats.
2790        * Some day, if we want the internal interface function to be able to
2791        * return the fake fourcc formats defined in dri_interface.h, we'll have
2792        * to do something more clever here to pair the list down to just real
2793        * fourcc formats so that we don't leak the fake internal ones.
2794        */
2795       for (int i = 0; i < *count; i++) {
2796          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2797       }
2798    }
2799
2800    return EGL_TRUE;
2801 }
2802
2803 static EGLBoolean
2804 dri2_query_dma_buf_modifiers(_EGLDisplay *disp, EGLint format,
2805                              EGLint max, EGLuint64KHR *modifiers,
2806                              EGLBoolean *external_only, EGLint *count)
2807 {
2808    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2809
2810    if (dri2_num_fourcc_format_planes(format) == 0)
2811       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2812
2813    if (max < 0)
2814       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2815
2816    if (max > 0 && modifiers == NULL)
2817       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2818
2819    if (dri2_dpy->image->base.version < 15 ||
2820        dri2_dpy->image->queryDmaBufModifiers == NULL)
2821       return EGL_FALSE;
2822
2823    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2824                                              max, modifiers,
2825                                              (unsigned int *) external_only,
2826                                              count) == false)
2827       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2828
2829    return EGL_TRUE;
2830 }
2831
2832 /**
2833  * The spec says:
2834  *
2835  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2836  *  EGL will take a reference to the dma_buf(s) which it will release at any
2837  *  time while the EGLDisplay is initialized. It is the responsibility of the
2838  *  application to close the dma_buf file descriptors."
2839  *
2840  * Therefore we must never close or otherwise modify the file descriptors.
2841  */
2842 _EGLImage *
2843 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2844                           EGLClientBuffer buffer, const EGLint *attr_list)
2845 {
2846    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2847    _EGLImage *res;
2848    _EGLImageAttribs attrs;
2849    __DRIimage *dri_image;
2850    unsigned num_fds;
2851    int fds[DMA_BUF_MAX_PLANES];
2852    int pitches[DMA_BUF_MAX_PLANES];
2853    int offsets[DMA_BUF_MAX_PLANES];
2854    uint64_t modifier;
2855    bool has_modifier = false;
2856    unsigned error;
2857
2858    /**
2859     * The spec says:
2860     *
2861     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2862     *     error EGL_BAD_PARAMETER is generated."
2863     */
2864    if (buffer != NULL) {
2865       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2866       return NULL;
2867    }
2868
2869    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2870       return NULL;
2871
2872    if (!dri2_check_dma_buf_attribs(&attrs))
2873       return NULL;
2874
2875    num_fds = dri2_check_dma_buf_format(&attrs);
2876    if (!num_fds)
2877       return NULL;
2878
2879    for (unsigned i = 0; i < num_fds; ++i) {
2880       fds[i] = attrs.DMABufPlaneFds[i].Value;
2881       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2882       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2883    }
2884
2885    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2886     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2887     * attrs.DMABufPlaneModifiersHi[0] */
2888    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2889       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2890                                       attrs.DMABufPlaneModifiersLo[0].Value);
2891       has_modifier = true;
2892    }
2893
2894    if (attrs.ProtectedContent) {
2895       if (dri2_dpy->image->base.version < 18 ||
2896           dri2_dpy->image->createImageFromDmaBufs3 == NULL) {
2897          _eglError(EGL_BAD_MATCH, "unsupported protected_content attribute");
2898          return EGL_NO_IMAGE_KHR;
2899       }
2900       if (!has_modifier)
2901          modifier = DRM_FORMAT_MOD_INVALID;
2902
2903       dri_image =
2904          dri2_dpy->image->createImageFromDmaBufs3(dri2_dpy->dri_screen,
2905             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2906             modifier, fds, num_fds, pitches, offsets,
2907             attrs.DMABufYuvColorSpaceHint.Value,
2908             attrs.DMABufSampleRangeHint.Value,
2909             attrs.DMABufChromaHorizontalSiting.Value,
2910             attrs.DMABufChromaVerticalSiting.Value,
2911             attrs.ProtectedContent ? __DRI_IMAGE_PROTECTED_CONTENT_FLAG : 0,
2912             &error,
2913             NULL);
2914    }
2915    else if (has_modifier) {
2916       if (dri2_dpy->image->base.version < 15 ||
2917           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2918          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2919          return EGL_NO_IMAGE_KHR;
2920       }
2921       dri_image =
2922          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2923             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2924             modifier, fds, num_fds, pitches, offsets,
2925             attrs.DMABufYuvColorSpaceHint.Value,
2926             attrs.DMABufSampleRangeHint.Value,
2927             attrs.DMABufChromaHorizontalSiting.Value,
2928             attrs.DMABufChromaVerticalSiting.Value,
2929             &error,
2930             NULL);
2931    }
2932    else {
2933       dri_image =
2934          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2935             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2936             fds, num_fds, pitches, offsets,
2937             attrs.DMABufYuvColorSpaceHint.Value,
2938             attrs.DMABufSampleRangeHint.Value,
2939             attrs.DMABufChromaHorizontalSiting.Value,
2940             attrs.DMABufChromaVerticalSiting.Value,
2941             &error,
2942             NULL);
2943    }
2944    dri2_create_image_khr_texture_error(error);
2945
2946    if (!dri_image)
2947       return EGL_NO_IMAGE_KHR;
2948
2949    res = dri2_create_image_from_dri(disp, dri_image);
2950
2951    return res;
2952 }
2953 static _EGLImage *
2954 dri2_create_drm_image_mesa(_EGLDisplay *disp, const EGLint *attr_list)
2955 {
2956    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2957    struct dri2_egl_image *dri2_img;
2958    _EGLImageAttribs attrs;
2959    unsigned int dri_use, valid_mask;
2960    int format;
2961
2962    if (!attr_list) {
2963       _eglError(EGL_BAD_PARAMETER, __func__);
2964       return EGL_NO_IMAGE_KHR;
2965    }
2966
2967    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2968       return EGL_NO_IMAGE_KHR;
2969
2970    if (attrs.Width <= 0 || attrs.Height <= 0) {
2971       _eglError(EGL_BAD_PARAMETER, __func__);
2972       return EGL_NO_IMAGE_KHR;
2973    }
2974
2975    switch (attrs.DRMBufferFormatMESA) {
2976    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2977       format = __DRI_IMAGE_FORMAT_ARGB8888;
2978       break;
2979    default:
2980       _eglError(EGL_BAD_PARAMETER, __func__);
2981       return EGL_NO_IMAGE_KHR;
2982    }
2983
2984    valid_mask =
2985       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2986       EGL_DRM_BUFFER_USE_SHARE_MESA |
2987       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2988    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2989       _eglError(EGL_BAD_PARAMETER, __func__);
2990       return EGL_NO_IMAGE_KHR;
2991    }
2992
2993    dri_use = 0;
2994    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2995       dri_use |= __DRI_IMAGE_USE_SHARE;
2996    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2997       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2998    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2999       dri_use |= __DRI_IMAGE_USE_CURSOR;
3000
3001    dri2_img = malloc(sizeof *dri2_img);
3002    if (!dri2_img) {
3003       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
3004       return EGL_NO_IMAGE_KHR;
3005    }
3006
3007    _eglInitImage(&dri2_img->base, disp);
3008
3009    dri2_img->dri_image =
3010       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
3011                                    attrs.Width, attrs.Height,
3012                                    format, dri_use, dri2_img);
3013    if (dri2_img->dri_image == NULL) {
3014       free(dri2_img);
3015        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
3016       return EGL_NO_IMAGE_KHR;
3017    }
3018
3019    return &dri2_img->base;
3020 }
3021
3022 static EGLBoolean
3023 dri2_export_drm_image_mesa(_EGLDisplay *disp, _EGLImage *img,
3024                           EGLint *name, EGLint *handle, EGLint *stride)
3025 {
3026    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3027    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3028
3029    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
3030                                             __DRI_IMAGE_ATTRIB_NAME, name))
3031       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
3032
3033    if (handle)
3034       dri2_dpy->image->queryImage(dri2_img->dri_image,
3035                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
3036
3037    if (stride)
3038       dri2_dpy->image->queryImage(dri2_img->dri_image,
3039                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
3040
3041    return EGL_TRUE;
3042 }
3043
3044 /**
3045  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
3046
3047  * The spec provides a boolean return for the driver to reject exporting for
3048  * basically any reason, but doesn't specify any particular error cases.  For
3049  * now, we just fail if we don't have a DRM fourcc for the format.
3050  */
3051 static bool
3052 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
3053 {
3054    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3055    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3056    EGLint fourcc;
3057
3058    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
3059                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
3060       return false;
3061    }
3062
3063    return true;
3064 }
3065
3066 static EGLBoolean
3067 dri2_export_dma_buf_image_query_mesa(_EGLDisplay *disp, _EGLImage *img,
3068                                      EGLint *fourcc, EGLint *nplanes,
3069                                      EGLuint64KHR *modifiers)
3070 {
3071    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3072    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3073    int num_planes;
3074
3075    if (!dri2_can_export_dma_buf_image(disp, img))
3076       return EGL_FALSE;
3077
3078    dri2_dpy->image->queryImage(dri2_img->dri_image,
3079                                __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
3080    if (nplanes)
3081      *nplanes = num_planes;
3082
3083    if (fourcc)
3084       dri2_dpy->image->queryImage(dri2_img->dri_image,
3085                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
3086
3087    if (modifiers) {
3088       int mod_hi, mod_lo;
3089       uint64_t modifier = DRM_FORMAT_MOD_INVALID;
3090       bool query;
3091
3092       query = dri2_dpy->image->queryImage(dri2_img->dri_image,
3093                                           __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
3094                                           &mod_hi);
3095       query &= dri2_dpy->image->queryImage(dri2_img->dri_image,
3096                                            __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
3097                                            &mod_lo);
3098       if (query)
3099          modifier = combine_u32_into_u64 (mod_hi, mod_lo);
3100
3101       for (int i = 0; i < num_planes; i++)
3102         modifiers[i] = modifier;
3103    }
3104
3105    return EGL_TRUE;
3106 }
3107
3108 static EGLBoolean
3109 dri2_export_dma_buf_image_mesa(_EGLDisplay *disp, _EGLImage *img,
3110                                int *fds, EGLint *strides, EGLint *offsets)
3111 {
3112    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3113    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3114    EGLint nplanes;
3115
3116    if (!dri2_can_export_dma_buf_image(disp, img))
3117       return EGL_FALSE;
3118
3119    /* EGL_MESA_image_dma_buf_export spec says:
3120     *    "If the number of fds is less than the number of planes, then
3121     *    subsequent fd slots should contain -1."
3122     */
3123    if (fds) {
3124       /* Query nplanes so that we know how big the given array is. */
3125       dri2_dpy->image->queryImage(dri2_img->dri_image,
3126                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
3127       memset(fds, -1, nplanes * sizeof(int));
3128    }
3129
3130    /* rework later to provide multiple fds/strides/offsets */
3131    if (fds)
3132       dri2_dpy->image->queryImage(dri2_img->dri_image,
3133                                   __DRI_IMAGE_ATTRIB_FD, fds);
3134
3135    if (strides)
3136       dri2_dpy->image->queryImage(dri2_img->dri_image,
3137                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
3138
3139    if (offsets) {
3140       int img_offset;
3141       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
3142                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
3143       if (ret)
3144          offsets[0] = img_offset;
3145       else
3146          offsets[0] = 0;
3147    }
3148
3149    return EGL_TRUE;
3150 }
3151
3152 #endif
3153
3154 _EGLImage *
3155 dri2_create_image_khr(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
3156                       EGLClientBuffer buffer, const EGLint *attr_list)
3157 {
3158    switch (target) {
3159    case EGL_GL_TEXTURE_2D_KHR:
3160    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
3161    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
3162    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
3163    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
3164    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
3165    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
3166    case EGL_GL_TEXTURE_3D_KHR:
3167       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
3168    case EGL_GL_RENDERBUFFER_KHR:
3169       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
3170 #ifdef HAVE_LIBDRM
3171    case EGL_DRM_BUFFER_MESA:
3172       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
3173    case EGL_LINUX_DMA_BUF_EXT:
3174       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
3175 #endif
3176 #ifdef HAVE_WAYLAND_PLATFORM
3177    case EGL_WAYLAND_BUFFER_WL:
3178       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
3179 #endif
3180    default:
3181       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
3182       return EGL_NO_IMAGE_KHR;
3183    }
3184 }
3185
3186 static EGLBoolean
3187 dri2_destroy_image_khr(_EGLDisplay *disp, _EGLImage *image)
3188 {
3189    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3190    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
3191
3192    dri2_dpy->image->destroyImage(dri2_img->dri_image);
3193    free(dri2_img);
3194
3195    return EGL_TRUE;
3196 }
3197
3198 #ifdef HAVE_WAYLAND_PLATFORM
3199
3200 static void
3201 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
3202                          struct wl_drm_buffer *buffer)
3203 {
3204    _EGLDisplay *disp = user_data;
3205    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3206    __DRIimage *img;
3207    int dri_components = 0;
3208
3209    if (fd == -1)
3210       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
3211                                                   buffer->width,
3212                                                   buffer->height,
3213                                                   buffer->format,
3214                                                   (int*)&name, 1,
3215                                                   buffer->stride,
3216                                                   buffer->offset,
3217                                                   NULL);
3218    else
3219       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
3220                                                 buffer->width,
3221                                                 buffer->height,
3222                                                 buffer->format,
3223                                                 &fd, 1,
3224                                                 buffer->stride,
3225                                                 buffer->offset,
3226                                                 NULL);
3227
3228    if (img == NULL)
3229       return;
3230
3231    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
3232
3233    buffer->driver_format = NULL;
3234    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
3235       if (wl_drm_components[i].dri_components == dri_components)
3236          buffer->driver_format = &wl_drm_components[i];
3237
3238    if (buffer->driver_format == NULL)
3239       dri2_dpy->image->destroyImage(img);
3240    else
3241       buffer->driver_buffer = img;
3242 }
3243
3244 static void
3245 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
3246 {
3247    _EGLDisplay *disp = user_data;
3248    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3249
3250    dri2_dpy->image->destroyImage(buffer->driver_buffer);
3251 }
3252
3253 static EGLBoolean
3254 dri2_bind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3255 {
3256    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3257    const struct wayland_drm_callbacks wl_drm_callbacks = {
3258       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
3259       .reference_buffer = dri2_wl_reference_buffer,
3260       .release_buffer = dri2_wl_release_buffer,
3261       .is_format_supported = dri2_wl_is_format_supported
3262    };
3263    int flags = 0;
3264    char *device_name;
3265    uint64_t cap;
3266
3267    if (dri2_dpy->wl_server_drm)
3268            return EGL_FALSE;
3269
3270    device_name = drmGetRenderDeviceNameFromFd(dri2_dpy->fd);
3271    if (!device_name)
3272       device_name = strdup(dri2_dpy->device_name);
3273    if (!device_name)
3274       return EGL_FALSE;
3275
3276    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
3277        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
3278        dri2_dpy->image->base.version >= 7 &&
3279        dri2_dpy->image->createImageFromFds != NULL)
3280       flags |= WAYLAND_DRM_PRIME;
3281
3282    dri2_dpy->wl_server_drm =
3283            wayland_drm_init(wl_dpy, device_name,
3284                             &wl_drm_callbacks, disp, flags);
3285
3286    free(device_name);
3287
3288    if (!dri2_dpy->wl_server_drm)
3289            return EGL_FALSE;
3290
3291 #ifdef HAVE_DRM_PLATFORM
3292    /* We have to share the wl_drm instance with gbm, so gbm can convert
3293     * wl_buffers to gbm bos. */
3294    if (dri2_dpy->gbm_dri)
3295       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
3296 #endif
3297
3298    return EGL_TRUE;
3299 }
3300
3301 static EGLBoolean
3302 dri2_unbind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3303 {
3304    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3305
3306    if (!dri2_dpy->wl_server_drm)
3307            return EGL_FALSE;
3308
3309    wayland_drm_uninit(dri2_dpy->wl_server_drm);
3310    dri2_dpy->wl_server_drm = NULL;
3311
3312    return EGL_TRUE;
3313 }
3314
3315 static EGLBoolean
3316 dri2_query_wayland_buffer_wl(_EGLDisplay *disp, struct wl_resource *buffer_resource,
3317                              EGLint attribute, EGLint *value)
3318 {
3319    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3320    struct wl_drm_buffer *buffer;
3321    const struct wl_drm_components_descriptor *format;
3322
3323    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
3324    if (!buffer)
3325       return EGL_FALSE;
3326
3327    format = buffer->driver_format;
3328    switch (attribute) {
3329    case EGL_TEXTURE_FORMAT:
3330       *value = format->components;
3331       return EGL_TRUE;
3332    case EGL_WIDTH:
3333       *value = buffer->width;
3334       return EGL_TRUE;
3335    case EGL_HEIGHT:
3336       *value = buffer->height;
3337       return EGL_TRUE;
3338    }
3339
3340    return EGL_FALSE;
3341 }
3342 #endif
3343
3344 static void
3345 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
3346 {
3347    p_atomic_inc(&sync->refcount);
3348 }
3349
3350 static void
3351 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
3352                     struct dri2_egl_sync *dri2_sync)
3353 {
3354    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
3355       switch (dri2_sync->base.Type) {
3356       case EGL_SYNC_REUSABLE_KHR:
3357          cnd_destroy(&dri2_sync->cond);
3358          break;
3359       case EGL_SYNC_NATIVE_FENCE_ANDROID:
3360          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
3361             close(dri2_sync->base.SyncFd);
3362          break;
3363       default:
3364          break;
3365       }
3366
3367       if (dri2_sync->fence)
3368          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
3369
3370       free(dri2_sync);
3371    }
3372 }
3373
3374 static _EGLSync *
3375 dri2_create_sync(_EGLDisplay *disp, EGLenum type, const EGLAttrib *attrib_list)
3376 {
3377    _EGLContext *ctx = _eglGetCurrentContext();
3378    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3379    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3380    struct dri2_egl_sync *dri2_sync;
3381    EGLint ret;
3382    pthread_condattr_t attr;
3383
3384    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
3385    if (!dri2_sync) {
3386       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3387       return NULL;
3388    }
3389
3390    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
3391       free(dri2_sync);
3392       return NULL;
3393    }
3394
3395    switch (type) {
3396    case EGL_SYNC_FENCE_KHR:
3397       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
3398       if (!dri2_sync->fence) {
3399          /* Why did it fail? DRI doesn't return an error code, so we emit
3400           * a generic EGL error that doesn't communicate user error.
3401           */
3402          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3403          free(dri2_sync);
3404          return NULL;
3405       }
3406       break;
3407
3408    case EGL_SYNC_CL_EVENT_KHR:
3409       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
3410                                  dri2_dpy->dri_screen,
3411                                  dri2_sync->base.CLEvent);
3412       /* this can only happen if the cl_event passed in is invalid. */
3413       if (!dri2_sync->fence) {
3414          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3415          free(dri2_sync);
3416          return NULL;
3417       }
3418
3419       /* the initial status must be "signaled" if the cl_event is signaled */
3420       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
3421                                             dri2_sync->fence, 0, 0))
3422          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3423       break;
3424
3425    case EGL_SYNC_REUSABLE_KHR:
3426       /* intialize attr */
3427       ret = pthread_condattr_init(&attr);
3428
3429       if (ret) {
3430          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3431          free(dri2_sync);
3432          return NULL;
3433       }
3434
3435       /* change clock attribute to CLOCK_MONOTONIC */
3436       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
3437
3438       if (ret) {
3439          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3440          free(dri2_sync);
3441          return NULL;
3442       }
3443
3444       ret = pthread_cond_init(&dri2_sync->cond, &attr);
3445
3446       if (ret) {
3447          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3448          free(dri2_sync);
3449          return NULL;
3450       }
3451
3452       /* initial status of reusable sync must be "unsignaled" */
3453       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3454       break;
3455
3456    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3457       if (dri2_dpy->fence->create_fence_fd) {
3458          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3459                                     dri2_ctx->dri_context,
3460                                     dri2_sync->base.SyncFd);
3461       }
3462       if (!dri2_sync->fence) {
3463          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3464          free(dri2_sync);
3465          return NULL;
3466       }
3467       break;
3468    }
3469
3470    p_atomic_set(&dri2_sync->refcount, 1);
3471    return &dri2_sync->base;
3472 }
3473
3474 static EGLBoolean
3475 dri2_destroy_sync(_EGLDisplay *disp, _EGLSync *sync)
3476 {
3477    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3478    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3479    EGLint ret = EGL_TRUE;
3480    EGLint err;
3481
3482    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3483     * then unlock all threads possibly blocked by the reusable sync before
3484     * destroying it.
3485     */
3486    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3487        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3488       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3489       /* unblock all threads currently blocked by sync */
3490       err = cnd_broadcast(&dri2_sync->cond);
3491
3492       if (err) {
3493          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3494          ret = EGL_FALSE;
3495       }
3496    }
3497
3498    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3499
3500    return ret;
3501 }
3502
3503 static EGLint
3504 dri2_dup_native_fence_fd(_EGLDisplay *disp, _EGLSync *sync)
3505 {
3506    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3507    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3508
3509    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3510
3511    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3512       /* try to retrieve the actual native fence fd.. if rendering is
3513        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3514        */
3515       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3516                                                    dri2_sync->fence);
3517    }
3518
3519    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3520       /* if native fence fd still not created, return an error: */
3521       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3522       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3523    }
3524
3525    assert(sync_valid_fd(sync->SyncFd));
3526
3527    return os_dupfd_cloexec(sync->SyncFd);
3528 }
3529
3530 static void
3531 dri2_set_blob_cache_funcs(_EGLDisplay *disp,
3532                           EGLSetBlobFuncANDROID set,
3533                           EGLGetBlobFuncANDROID get)
3534 {
3535    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3536    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3537                                    disp->BlobCacheSet,
3538                                    disp->BlobCacheGet);
3539 }
3540
3541 static EGLint
3542 dri2_client_wait_sync(_EGLDisplay *disp, _EGLSync *sync,
3543                       EGLint flags, EGLTime timeout)
3544 {
3545    _EGLContext *ctx = _eglGetCurrentContext();
3546    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3547    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3548    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3549    unsigned wait_flags = 0;
3550
3551    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3552
3553    /* The EGL_KHR_fence_sync spec states:
3554     *
3555     *    "If no context is current for the bound API,
3556     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3557     */
3558    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3559       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3560
3561    /* the sync object should take a reference while waiting */
3562    dri2_egl_ref_sync(dri2_sync);
3563
3564    switch (sync->Type) {
3565    case EGL_SYNC_FENCE_KHR:
3566    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3567    case EGL_SYNC_CL_EVENT_KHR:
3568       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3569                                          dri2_sync->fence, wait_flags,
3570                                          timeout))
3571          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3572       else
3573          ret = EGL_TIMEOUT_EXPIRED_KHR;
3574       break;
3575
3576    case EGL_SYNC_REUSABLE_KHR:
3577       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3578           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3579          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3580          dri2_gl_flush();
3581       }
3582
3583       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3584       if (timeout == EGL_FOREVER_KHR) {
3585          mtx_lock(&dri2_sync->mutex);
3586          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3587          mtx_unlock(&dri2_sync->mutex);
3588       } else {
3589          /* if reusable sync has not been yet signaled */
3590          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3591             /* timespecs for cnd_timedwait */
3592             struct timespec current;
3593             struct timespec expire;
3594
3595             /* We override the clock to monotonic when creating the condition
3596              * variable. */
3597             clock_gettime(CLOCK_MONOTONIC, &current);
3598
3599             /* calculating when to expire */
3600             expire.tv_nsec = timeout % 1000000000L;
3601             expire.tv_sec = timeout / 1000000000L;
3602
3603             expire.tv_nsec += current.tv_nsec;
3604             expire.tv_sec += current.tv_sec;
3605
3606             /* expire.nsec now is a number between 0 and 1999999998 */
3607             if (expire.tv_nsec > 999999999L) {
3608                expire.tv_sec++;
3609                expire.tv_nsec -= 1000000000L;
3610             }
3611
3612             mtx_lock(&dri2_sync->mutex);
3613             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3614             mtx_unlock(&dri2_sync->mutex);
3615
3616             if (ret == thrd_timedout) {
3617                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3618                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3619                } else {
3620                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3621                   ret = EGL_FALSE;
3622                }
3623             }
3624          }
3625       }
3626       break;
3627   }
3628   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3629
3630   return ret;
3631 }
3632
3633 static EGLBoolean
3634 dri2_signal_sync(_EGLDisplay *disp, _EGLSync *sync, EGLenum mode)
3635 {
3636    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3637    EGLint ret;
3638
3639    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3640       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3641
3642    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3643       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3644
3645    dri2_sync->base.SyncStatus = mode;
3646
3647    if (mode == EGL_SIGNALED_KHR) {
3648       ret = cnd_broadcast(&dri2_sync->cond);
3649
3650       /* fail to broadcast */
3651       if (ret)
3652          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3653    }
3654
3655    return EGL_TRUE;
3656 }
3657
3658 static EGLint
3659 dri2_server_wait_sync(_EGLDisplay *disp, _EGLSync *sync)
3660 {
3661    _EGLContext *ctx = _eglGetCurrentContext();
3662    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3663    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3664    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3665
3666    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3667                                      dri2_sync->fence, 0);
3668    return EGL_TRUE;
3669 }
3670
3671 static int
3672 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3673                                struct mesa_glinterop_device_info *out)
3674 {
3675    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3676    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3677
3678    if (!dri2_dpy->interop)
3679       return MESA_GLINTEROP_UNSUPPORTED;
3680
3681    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3682 }
3683
3684 static int
3685 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3686                            struct mesa_glinterop_export_in *in,
3687                            struct mesa_glinterop_export_out *out)
3688 {
3689    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3690    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3691
3692    if (!dri2_dpy->interop)
3693       return MESA_GLINTEROP_UNSUPPORTED;
3694
3695    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3696 }
3697
3698 const _EGLDriver _eglDriver = {
3699    .Initialize = dri2_initialize,
3700    .Terminate = dri2_terminate,
3701    .CreateContext = dri2_create_context,
3702    .DestroyContext = dri2_destroy_context,
3703    .MakeCurrent = dri2_make_current,
3704    .CreateWindowSurface = dri2_create_window_surface,
3705    .CreatePixmapSurface = dri2_create_pixmap_surface,
3706    .CreatePbufferSurface = dri2_create_pbuffer_surface,
3707    .DestroySurface = dri2_destroy_surface,
3708    .GetProcAddress = dri2_get_proc_address,
3709    .WaitClient = dri2_wait_client,
3710    .WaitNative = dri2_wait_native,
3711    .BindTexImage = dri2_bind_tex_image,
3712    .ReleaseTexImage = dri2_release_tex_image,
3713    .SwapInterval = dri2_swap_interval,
3714    .SwapBuffers = dri2_swap_buffers,
3715    .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
3716    .SwapBuffersRegionNOK = dri2_swap_buffers_region,
3717    .SetDamageRegion = dri2_set_damage_region,
3718    .PostSubBufferNV = dri2_post_sub_buffer,
3719    .CopyBuffers = dri2_copy_buffers,
3720    .QueryBufferAge = dri2_query_buffer_age,
3721    .CreateImageKHR = dri2_create_image,
3722    .DestroyImageKHR = dri2_destroy_image_khr,
3723    .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
3724    .QuerySurface = dri2_query_surface,
3725    .QueryDriverName = dri2_query_driver_name,
3726    .QueryDriverConfig = dri2_query_driver_config,
3727 #ifdef HAVE_LIBDRM
3728    .CreateDRMImageMESA = dri2_create_drm_image_mesa,
3729    .ExportDRMImageMESA = dri2_export_drm_image_mesa,
3730    .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
3731    .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
3732    .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
3733    .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
3734 #endif
3735 #ifdef HAVE_WAYLAND_PLATFORM
3736    .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
3737    .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
3738    .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
3739 #endif
3740    .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
3741    .CreateSyncKHR = dri2_create_sync,
3742    .ClientWaitSyncKHR = dri2_client_wait_sync,
3743    .SignalSyncKHR = dri2_signal_sync,
3744    .WaitSyncKHR = dri2_server_wait_sync,
3745    .DestroySyncKHR = dri2_destroy_sync,
3746    .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
3747    .GLInteropExportObject = dri2_interop_export_object,
3748    .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
3749    .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
3750 };