src/egl/drivers/dri2/egl_dri2.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdbool.h>
  29 #include <stdint.h>
  30 #include <stdbool.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdio.h>
  34 #include <limits.h>
  35 #include <dlfcn.h>
  36 #include <fcntl.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <c11/threads.h>
  40 #include <time.h>
  41 #ifdef HAVE_LIBDRM
  42 #include <xf86drm.h>
  43 #include "drm-uapi/drm_fourcc.h"
  44 #endif
  45 #include <GL/gl.h>
  46 #include <GL/internal/dri_interface.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49
  50 #ifdef HAVE_WAYLAND_PLATFORM
  51 #include <wayland-client.h>
  52 #include "wayland-drm.h"
  53 #include "wayland-drm-client-protocol.h"
  54 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  55 #endif
  56
  57 #ifdef HAVE_X11_PLATFORM
  58 #include "X11/Xlibint.h"
  59 #endif
  60
  61 #include "egldefines.h"
  62 #include "egl_dri2.h"
  63 #include "GL/mesa_glinterop.h"
  64 #include "loader/loader.h"
  65 #include "util/os_file.h"
  66 #include "util/u_atomic.h"
  67 #include "util/u_vector.h"
  68 #include "mapi/glapi/glapi.h"
  69 #include "util/bitscan.h"
  70 #include "util/u_math.h"
  71
  72 /* Additional definitions not yet in the drm_fourcc.h.
  73  */
  74 #ifndef DRM_FORMAT_P010
  75 #define DRM_FORMAT_P010          fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cb:Cr plane 10 bits per channel */
  76 #endif
  77
  78 #ifndef DRM_FORMAT_P012
  79 #define DRM_FORMAT_P012          fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cb:Cr plane 12 bits per channel */
  80 #endif
  81
  82 #ifndef DRM_FORMAT_P016
  83 #define DRM_FORMAT_P016          fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cb:Cr plane 16 bits per channel */
  84 #endif
  85
  86 #define NUM_ATTRIBS 12
  87
  88 static const struct dri2_pbuffer_visual {
  89    const char *format_name;
  90    unsigned int dri_image_format;
  91    int rgba_shifts[4];
  92    unsigned int rgba_sizes[4];
  93 } dri2_pbuffer_visuals[] = {
  94    {
  95       "ABGR16F",
  96       __DRI_IMAGE_FORMAT_ABGR16161616F,
  97       { 0, 16, 32, 48 },
  98       { 16, 16, 16, 16 }
  99    },
 100    {
 101       "XBGR16F",
 102       __DRI_IMAGE_FORMAT_XBGR16161616F,
 103       { 0, 16, 32, -1 },
 104       { 16, 16, 16, 0 }
 105    },
 106    {
 107       "A2RGB10",
 108       __DRI_IMAGE_FORMAT_ARGB2101010,
 109       { 20, 10, 0, 30 },
 110       { 10, 10, 10, 2 }
 111    },
 112    {
 113       "X2RGB10",
 114       __DRI_IMAGE_FORMAT_XRGB2101010,
 115       { 20, 10, 0, -1 },
 116       { 10, 10, 10, 0 }
 117    },
 118    {
 119       "ARGB8888",
 120       __DRI_IMAGE_FORMAT_ARGB8888,
 121       { 16, 8, 0, 24 },
 122       { 8, 8, 8, 8 }
 123    },
 124    {
 125       "RGB888",
 126       __DRI_IMAGE_FORMAT_XRGB8888,
 127       { 16, 8, 0, -1 },
 128       { 8, 8, 8, 0 }
 129    },
 130    {
 131       "RGB565",
 132       __DRI_IMAGE_FORMAT_RGB565,
 133       { 11, 5, 0, -1 },
 134       { 5, 6, 5, 0 }
 135    },
 136 };
 137
 138 static void
 139 dri_set_background_context(void *loaderPrivate)
 140 {
 141    _EGLContext *ctx = _eglGetCurrentContext();
 142    _EGLThreadInfo *t = _eglGetCurrentThread();
 143
 144    _eglBindContextToThread(ctx, t);
 145 }
 146
 147 static void
 148 dri2_gl_flush()
 149 {
 150    static void (*glFlush)(void);
 151    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 152
 153    mtx_lock(&glFlushMutex);
 154    if (!glFlush)
 155       glFlush = _glapi_get_proc_address("glFlush");
 156    mtx_unlock(&glFlushMutex);
 157
 158    /* if glFlush is not available things are horribly broken */
 159    if (!glFlush) {
 160       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 161       return;
 162    }
 163
 164    glFlush();
 165 }
 166
 167 static GLboolean
 168 dri_is_thread_safe(void *loaderPrivate)
 169 {
 170    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 171    UNUSED _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 172
 173 #ifdef HAVE_X11_PLATFORM
 174    Display *xdpy = (Display*)display->PlatformDisplay;
 175
 176    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 177     * platform
 178     *
 179     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 180     * It wll be NULL if XInitThreads wasn't called.
 181     */
 182    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 183       return false;
 184 #endif
 185
 186 #ifdef HAVE_WAYLAND_PLATFORM
 187    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 188       return true;
 189 #endif
 190
 191    return true;
 192 }
 193
 194 const __DRIbackgroundCallableExtension background_callable_extension = {
 195    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 196
 197    .setBackgroundContext = dri_set_background_context,
 198    .isThreadSafe         = dri_is_thread_safe,
 199 };
 200
 201 const __DRIuseInvalidateExtension use_invalidate = {
 202    .base = { __DRI_USE_INVALIDATE, 1 }
 203 };
 204
 205 static void
 206 dri2_get_pbuffer_drawable_info(__DRIdrawable * draw,
 207                                int *x, int *y, int *w, int *h,
 208                                void *loaderPrivate)
 209 {
 210    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 211
 212    *x = *y = 0;
 213    *w = dri2_surf->base.Width;
 214    *h = dri2_surf->base.Height;
 215 }
 216
 217 static int
 218 dri2_get_bytes_per_pixel(struct dri2_egl_surface *dri2_surf)
 219 {
 220    const int depth = dri2_surf->base.Config->BufferSize;
 221    return depth ? util_next_power_of_two(depth / 8) : 0;
 222 }
 223
 224 static void
 225 dri2_put_image(__DRIdrawable * draw, int op,
 226                int x, int y, int w, int h,
 227                char *data, void *loaderPrivate)
 228 {
 229    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 230    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 231    const int width = dri2_surf->base.Width;
 232    const int height = dri2_surf->base.Height;
 233    const int dst_stride = width*bpp;
 234    const int src_stride = w*bpp;
 235    const int x_offset = x*bpp;
 236    int copy_width = src_stride;
 237
 238    if (!dri2_surf->swrast_device_buffer)
 239       dri2_surf->swrast_device_buffer = malloc(height*dst_stride);
 240
 241    if (dri2_surf->swrast_device_buffer) {
 242       const char *src = data;
 243       char *dst = dri2_surf->swrast_device_buffer;
 244
 245       dst += x_offset;
 246       dst += y*dst_stride;
 247
 248       /* Drivers are allowed to submit OOB PutImage requests, so clip here. */
 249       if (copy_width > dst_stride - x_offset)
 250          copy_width = dst_stride - x_offset;
 251       if (h > height - y)
 252          h = height - y;
 253
 254       for (; 0 < h; --h) {
 255          memcpy(dst, src, copy_width);
 256          dst += dst_stride;
 257          src += src_stride;
 258       }
 259    }
 260 }
 261
 262 static void
 263 dri2_get_image(__DRIdrawable * read,
 264                int x, int y, int w, int h,
 265                char *data, void *loaderPrivate)
 266 {
 267    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 268    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 269    const int width = dri2_surf->base.Width;
 270    const int height = dri2_surf->base.Height;
 271    const int src_stride = width*bpp;
 272    const int dst_stride = w*bpp;
 273    const int x_offset = x*bpp;
 274    int copy_width = dst_stride;
 275    const char *src = dri2_surf->swrast_device_buffer;
 276    char *dst = data;
 277
 278    if (!src) {
 279       memset(data, 0, copy_width * h);
 280       return;
 281    }
 282
 283    src += x_offset;
 284    src += y*src_stride;
 285
 286    /* Drivers are allowed to submit OOB GetImage requests, so clip here. */
 287    if (copy_width > src_stride - x_offset)
 288       copy_width = src_stride - x_offset;
 289    if (h > height - y)
 290       h = height - y;
 291
 292    for (; 0 < h; --h) {
 293       memcpy(dst, src, copy_width);
 294       src += src_stride;
 295       dst += dst_stride;
 296    }
 297
 298 }
 299
 300 /* HACK: technically we should have swrast_null, instead of these.
 301  */
 302 const __DRIswrastLoaderExtension swrast_pbuffer_loader_extension = {
 303    .base            = { __DRI_SWRAST_LOADER, 1 },
 304    .getDrawableInfo = dri2_get_pbuffer_drawable_info,
 305    .putImage        = dri2_put_image,
 306    .getImage        = dri2_get_image,
 307 };
 308
 309 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 310    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 311    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 312    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 313    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 314    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 315    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 316    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 317    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 318    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 319    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 320    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 321    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 322    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 323 };
 324
 325 const __DRIconfig *
 326 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 327                     EGLenum colorspace)
 328 {
 329    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 330    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 331
 332    return conf->dri_config[double_buffer][srgb];
 333 }
 334
 335 static EGLBoolean
 336 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 337 {
 338    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 339       return EGL_FALSE;
 340
 341    if (!_eglMatchConfig(conf, criteria))
 342       return EGL_FALSE;
 343
 344    return EGL_TRUE;
 345 }
 346
 347 void
 348 dri2_get_shifts_and_sizes(const __DRIcoreExtension *core,
 349                           const __DRIconfig *config, int *shifts,
 350                           unsigned int *sizes)
 351 {
 352    unsigned int mask;
 353
 354    if (core->getConfigAttrib(config, __DRI_ATTRIB_RED_SHIFT, (unsigned int *)&shifts[0])) {
 355       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SHIFT, (unsigned int *)&shifts[1]);
 356       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SHIFT, (unsigned int *)&shifts[2]);
 357       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SHIFT, (unsigned int *)&shifts[3]);
 358    } else {
 359       /* Driver isn't exposing shifts, so convert masks to shifts */
 360       core->getConfigAttrib(config, __DRI_ATTRIB_RED_MASK, &mask);
 361       shifts[0] = ffs(mask) - 1;
 362       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_MASK, &mask);
 363       shifts[1] = ffs(mask) - 1;
 364       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_MASK, &mask);
 365       shifts[2] = ffs(mask) - 1;
 366       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_MASK, &mask);
 367       shifts[3] = ffs(mask) - 1;
 368    }
 369
 370    core->getConfigAttrib(config, __DRI_ATTRIB_RED_SIZE, &sizes[0]);
 371    core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SIZE, &sizes[1]);
 372    core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SIZE, &sizes[2]);
 373    core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SIZE, &sizes[3]);
 374 }
 375
 376 void
 377 dri2_get_render_type_float(const __DRIcoreExtension *core,
 378                            const __DRIconfig *config,
 379                            bool *is_float)
 380 {
 381    unsigned int render_type;
 382
 383    core->getConfigAttrib(config, __DRI_ATTRIB_RENDER_TYPE, &render_type);
 384    *is_float = (render_type & __DRI_ATTRIB_FLOAT_BIT) ? true : false;
 385 }
 386
 387 unsigned int
 388 dri2_image_format_for_pbuffer_config(struct dri2_egl_display *dri2_dpy,
 389                                      const __DRIconfig *config)
 390 {
 391    int shifts[4];
 392    unsigned int sizes[4];
 393
 394    dri2_get_shifts_and_sizes(dri2_dpy->core, config, shifts, sizes);
 395
 396    for (unsigned i = 0; i < ARRAY_SIZE(dri2_pbuffer_visuals); ++i) {
 397       const struct dri2_pbuffer_visual *visual = &dri2_pbuffer_visuals[i];
 398
 399       if (shifts[0] == visual->rgba_shifts[0] &&
 400           shifts[1] == visual->rgba_shifts[1] &&
 401           shifts[2] == visual->rgba_shifts[2] &&
 402           shifts[3] == visual->rgba_shifts[3] &&
 403           sizes[0] == visual->rgba_sizes[0] &&
 404           sizes[1] == visual->rgba_sizes[1] &&
 405           sizes[2] == visual->rgba_sizes[2] &&
 406           sizes[3] == visual->rgba_sizes[3]) {
 407          return visual->dri_image_format;
 408       }
 409    }
 410
 411    return __DRI_IMAGE_FORMAT_NONE;
 412 }
 413
 414 struct dri2_egl_config *
 415 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 416                 EGLint surface_type, const EGLint *attr_list,
 417                 const int *rgba_shifts, const unsigned int *rgba_sizes)
 418 {
 419    struct dri2_egl_config *conf;
 420    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 421    _EGLConfig base;
 422    unsigned int attrib, value, double_buffer;
 423    bool srgb = false;
 424    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 425    int dri_shifts[4] = { -1, -1, -1, -1 };
 426    unsigned int dri_sizes[4] = { 0, 0, 0, 0 };
 427    _EGLConfig *matching_config;
 428    EGLint num_configs = 0;
 429    EGLint config_id;
 430
 431    _eglInitConfig(&base, disp, id);
 432
 433    double_buffer = 0;
 434    bind_to_texture_rgb = 0;
 435    bind_to_texture_rgba = 0;
 436
 437    for (int i = 0; i < __DRI_ATTRIB_MAX; ++i) {
 438       if (!dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib, &value))
 439          break;
 440
 441       switch (attrib) {
 442       case __DRI_ATTRIB_RENDER_TYPE:
 443          if (value & __DRI_ATTRIB_FLOAT_BIT)
 444             base.ComponentType = EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT;
 445          if (value & __DRI_ATTRIB_RGBA_BIT)
 446             value = EGL_RGB_BUFFER;
 447          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 448             value = EGL_LUMINANCE_BUFFER;
 449          else
 450             return NULL;
 451          base.ColorBufferType = value;
 452          break;
 453
 454       case __DRI_ATTRIB_CONFIG_CAVEAT:
 455          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 456             value = EGL_NON_CONFORMANT_CONFIG;
 457          else if (value & __DRI_ATTRIB_SLOW_BIT)
 458             value = EGL_SLOW_CONFIG;
 459          else
 460             value = EGL_NONE;
 461          base.ConfigCaveat = value;
 462          break;
 463
 464       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 465          bind_to_texture_rgb = value;
 466          break;
 467
 468       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 469          bind_to_texture_rgba = value;
 470          break;
 471
 472       case __DRI_ATTRIB_DOUBLE_BUFFER:
 473          double_buffer = value;
 474          break;
 475
 476       case __DRI_ATTRIB_RED_SIZE:
 477          dri_sizes[0] = value;
 478          base.RedSize = value;
 479          break;
 480
 481       case __DRI_ATTRIB_RED_MASK:
 482          dri_shifts[0] = ffs(value) - 1;
 483          break;
 484
 485       case __DRI_ATTRIB_RED_SHIFT:
 486          dri_shifts[0] = value;
 487          break;
 488
 489       case __DRI_ATTRIB_GREEN_SIZE:
 490          dri_sizes[1] = value;
 491          base.GreenSize = value;
 492          break;
 493
 494       case __DRI_ATTRIB_GREEN_MASK:
 495          dri_shifts[1] = ffs(value) - 1;
 496          break;
 497
 498       case __DRI_ATTRIB_GREEN_SHIFT:
 499          dri_shifts[1] = value;
 500          break;
 501
 502       case __DRI_ATTRIB_BLUE_SIZE:
 503          dri_sizes[2] = value;
 504          base.BlueSize = value;
 505          break;
 506
 507       case __DRI_ATTRIB_BLUE_MASK:
 508          dri_shifts[2] = ffs(value) - 1;
 509          break;
 510
 511       case __DRI_ATTRIB_BLUE_SHIFT:
 512          dri_shifts[2] = value;
 513          break;
 514
 515      case __DRI_ATTRIB_ALPHA_SIZE:
 516          dri_sizes[3] = value;
 517          base.AlphaSize = value;
 518          break;
 519
 520       case __DRI_ATTRIB_ALPHA_MASK:
 521          dri_shifts[3] = ffs(value) - 1;
 522          break;
 523
 524       case __DRI_ATTRIB_ALPHA_SHIFT:
 525          dri_shifts[3] = value;
 526          break;
 527
 528       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 529       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 530       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 531       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 532          /* Don't expose visuals with the accumulation buffer. */
 533          if (value > 0)
 534             return NULL;
 535          break;
 536
 537       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 538          srgb = value != 0;
 539          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 540             return NULL;
 541          break;
 542
 543       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 544          base.MaxPbufferWidth = _EGL_MAX_PBUFFER_WIDTH;
 545          break;
 546       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 547          base.MaxPbufferHeight = _EGL_MAX_PBUFFER_HEIGHT;
 548          break;
 549       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
 550          if (disp->Extensions.KHR_mutable_render_buffer)
 551             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
 552          break;
 553       default:
 554          key = dri2_to_egl_attribute_map[attrib];
 555          if (key != 0)
 556             _eglSetConfigKey(&base, key, value);
 557          break;
 558       }
 559    }
 560
 561    if (attr_list)
 562       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 563          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 564
 565    if (rgba_shifts && memcmp(rgba_shifts, dri_shifts, sizeof(dri_shifts)))
 566       return NULL;
 567
 568    if (rgba_sizes && memcmp(rgba_sizes, dri_sizes, sizeof(dri_sizes)))
 569       return NULL;
 570
 571    base.NativeRenderable = EGL_TRUE;
 572
 573    base.SurfaceType = surface_type;
 574    if (surface_type & (EGL_PBUFFER_BIT |
 575        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 576       base.BindToTextureRGB = bind_to_texture_rgb;
 577       if (base.AlphaSize > 0)
 578          base.BindToTextureRGBA = bind_to_texture_rgba;
 579    }
 580
 581    if (double_buffer) {
 582       surface_type &= ~EGL_PIXMAP_BIT;
 583    }
 584
 585    /* No support for pbuffer + MSAA for now.
 586     *
 587     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 588     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 589     */
 590    if (base.Samples) {
 591       surface_type &= ~EGL_PBUFFER_BIT;
 592    }
 593
 594    if (!surface_type)
 595       return NULL;
 596
 597    base.RenderableType = disp->ClientAPIs;
 598    base.Conformant = disp->ClientAPIs;
 599
 600    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 601    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 602
 603    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 604       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 605       return NULL;
 606    }
 607
 608    config_id = base.ConfigID;
 609    base.ConfigID    = EGL_DONT_CARE;
 610    base.SurfaceType = EGL_DONT_CARE;
 611    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 612                                  (_EGLArrayForEach) dri2_match_config, &base);
 613
 614    if (num_configs == 1) {
 615       conf = (struct dri2_egl_config *) matching_config;
 616
 617       if (!conf->dri_config[double_buffer][srgb])
 618          conf->dri_config[double_buffer][srgb] = dri_config;
 619       else
 620          /* a similar config type is already added (unlikely) => discard */
 621          return NULL;
 622    }
 623    else if (num_configs == 0) {
 624       conf = calloc(1, sizeof *conf);
 625       if (conf == NULL)
 626          return NULL;
 627
 628       conf->dri_config[double_buffer][srgb] = dri_config;
 629
 630       memcpy(&conf->base, &base, sizeof base);
 631       conf->base.SurfaceType = 0;
 632       conf->base.ConfigID = config_id;
 633
 634       _eglLinkConfig(&conf->base);
 635    }
 636    else {
 637       unreachable("duplicates should not be possible");
 638       return NULL;
 639    }
 640
 641    conf->base.SurfaceType |= surface_type;
 642
 643    return conf;
 644 }
 645
 646 EGLBoolean
 647 dri2_add_pbuffer_configs_for_visuals(_EGLDisplay *disp)
 648 {
 649    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 650    unsigned int format_count[ARRAY_SIZE(dri2_pbuffer_visuals)] = { 0 };
 651    unsigned int config_count = 0;
 652
 653    for (unsigned i = 0; dri2_dpy->driver_configs[i] != NULL; i++) {
 654       for (unsigned j = 0; j < ARRAY_SIZE(dri2_pbuffer_visuals); j++) {
 655          struct dri2_egl_config *dri2_conf;
 656
 657          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
 658                config_count + 1, EGL_PBUFFER_BIT, NULL,
 659                dri2_pbuffer_visuals[j].rgba_shifts, dri2_pbuffer_visuals[j].rgba_sizes);
 660
 661          if (dri2_conf) {
 662             if (dri2_conf->base.ConfigID == config_count + 1)
 663                config_count++;
 664             format_count[j]++;
 665          }
 666       }
 667    }
 668
 669    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
 670       if (!format_count[i]) {
 671          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
 672                dri2_pbuffer_visuals[i].format_name);
 673       }
 674    }
 675
 676    return (config_count != 0);
 677 }
 678
 679 __DRIimage *
 680 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 681 {
 682    _EGLDisplay *disp = data;
 683    struct dri2_egl_image *dri2_img;
 684    _EGLImage *img;
 685
 686    (void) screen;
 687
 688    img = _eglLookupImage(image, disp);
 689    if (img == NULL) {
 690       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 691       return NULL;
 692    }
 693
 694    dri2_img = dri2_egl_image(image);
 695
 696    return dri2_img->dri_image;
 697 }
 698
 699 const __DRIimageLookupExtension image_lookup_extension = {
 700    .base = { __DRI_IMAGE_LOOKUP, 1 },
 701
 702    .lookupEGLImage       = dri2_lookup_egl_image
 703 };
 704
 705 struct dri2_extension_match {
 706    const char *name;
 707    int version;
 708    int offset;
 709 };
 710
 711 static const struct dri2_extension_match dri3_driver_extensions[] = {
 712    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 713    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 714    { NULL, 0, 0 }
 715 };
 716
 717 static const struct dri2_extension_match dri2_driver_extensions[] = {
 718    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 719    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 720    { NULL, 0, 0 }
 721 };
 722
 723 static const struct dri2_extension_match dri2_core_extensions[] = {
 724    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 725    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 726    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 727    { NULL, 0, 0 }
 728 };
 729
 730 static const struct dri2_extension_match swrast_driver_extensions[] = {
 731    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 732    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 733    { NULL, 0, 0 }
 734 };
 735
 736 static const struct dri2_extension_match swrast_core_extensions[] = {
 737    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 738    { NULL, 0, 0 }
 739 };
 740
 741 static const struct dri2_extension_match optional_driver_extensions[] = {
 742    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
 743    { NULL, 0, 0 }
 744 };
 745
 746 static const struct dri2_extension_match optional_core_extensions[] = {
 747    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 748    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 749    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 750    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 751    { __DRI2_BUFFER_DAMAGE, 1, offsetof(struct dri2_egl_display, buffer_damage) },
 752    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 753    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 754    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 755    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 756    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 757    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 758    { NULL, 0, 0 }
 759 };
 760
 761 static EGLBoolean
 762 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 763                      const struct dri2_extension_match *matches,
 764                      const __DRIextension **extensions,
 765                      bool optional)
 766 {
 767    int ret = EGL_TRUE;
 768    void *field;
 769
 770    for (int i = 0; extensions[i]; i++) {
 771       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 772       for (int j = 0; matches[j].name; j++) {
 773          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 774              extensions[i]->version >= matches[j].version) {
 775             field = ((char *) dri2_dpy + matches[j].offset);
 776             *(const __DRIextension **) field = extensions[i];
 777             _eglLog(_EGL_INFO, "found extension %s version %d",
 778                     extensions[i]->name, extensions[i]->version);
 779             break;
 780          }
 781       }
 782    }
 783
 784    for (int j = 0; matches[j].name; j++) {
 785       field = ((char *) dri2_dpy + matches[j].offset);
 786       if (*(const __DRIextension **) field == NULL) {
 787          if (optional) {
 788             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 789                     matches[j].name, matches[j].version);
 790          } else {
 791             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 792                     matches[j].name, matches[j].version);
 793             ret = EGL_FALSE;
 794          }
 795       }
 796    }
 797
 798    return ret;
 799 }
 800
 801 static const __DRIextension **
 802 dri2_open_driver(_EGLDisplay *disp)
 803 {
 804    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 805    static const char *search_path_vars[] = {
 806       "LIBGL_DRIVERS_PATH",
 807       NULL,
 808    };
 809
 810    return loader_open_driver(dri2_dpy->driver_name,
 811                              &dri2_dpy->driver,
 812                              search_path_vars);
 813 }
 814
 815 static EGLBoolean
 816 dri2_load_driver_common(_EGLDisplay *disp,
 817                         const struct dri2_extension_match *driver_extensions)
 818 {
 819    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 820    const __DRIextension **extensions;
 821
 822    extensions = dri2_open_driver(disp);
 823    if (!extensions)
 824       return EGL_FALSE;
 825
 826    if (!dri2_bind_extensions(dri2_dpy, driver_extensions, extensions, false)) {
 827       dlclose(dri2_dpy->driver);
 828       dri2_dpy->driver = NULL;
 829       return EGL_FALSE;
 830    }
 831    dri2_dpy->driver_extensions = extensions;
 832
 833    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 834
 835    return EGL_TRUE;
 836 }
 837
 838 EGLBoolean
 839 dri2_load_driver(_EGLDisplay *disp)
 840 {
 841    return dri2_load_driver_common(disp, dri2_driver_extensions);
 842 }
 843
 844 EGLBoolean
 845 dri2_load_driver_dri3(_EGLDisplay *disp)
 846 {
 847    return dri2_load_driver_common(disp, dri3_driver_extensions);
 848 }
 849
 850 EGLBoolean
 851 dri2_load_driver_swrast(_EGLDisplay *disp)
 852 {
 853    return dri2_load_driver_common(disp, swrast_driver_extensions);
 854 }
 855
 856 static unsigned
 857 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 858 {
 859    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 860    unsigned int value = 0;
 861
 862    if (!rendererQuery ||
 863        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 864       return 0;
 865
 866    return value;
 867 }
 868
 869 static const char *
 870 dri2_query_driver_name(_EGLDisplay *disp)
 871 {
 872     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 873     return dri2_dpy->driver_name;
 874 }
 875
 876 static char *
 877 dri2_query_driver_config(_EGLDisplay *disp)
 878 {
 879     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 880     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
 881
 882     if (ext->base.version >= 2)
 883         return ext->getXml(dri2_dpy->driver_name);
 884
 885     return strdup(ext->xml);
 886 }
 887
 888
 889 void
 890 dri2_setup_screen(_EGLDisplay *disp)
 891 {
 892    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 893    unsigned int api_mask;
 894
 895    /*
 896     * EGL 1.5 specification defines the default value to 1. Moreover,
 897     * eglSwapInterval() is required to clamp requested value to the supported
 898     * range. Since the default value is implicitly assumed to be supported,
 899     * use it as both minimum and maximum for the platforms that do not allow
 900     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 901     * override these values already.
 902     */
 903    dri2_dpy->min_swap_interval = 1;
 904    dri2_dpy->max_swap_interval = 1;
 905    dri2_dpy->default_swap_interval = 1;
 906
 907    if (dri2_dpy->image_driver) {
 908       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 909    } else if (dri2_dpy->dri2) {
 910       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 911    } else {
 912       assert(dri2_dpy->swrast);
 913       api_mask = 1 << __DRI_API_OPENGL |
 914                  1 << __DRI_API_GLES |
 915                  1 << __DRI_API_GLES2 |
 916                  1 << __DRI_API_GLES3;
 917    }
 918
 919    disp->ClientAPIs = 0;
 920    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 921       disp->ClientAPIs |= EGL_OPENGL_BIT;
 922    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 923       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 924    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 925       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 926    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 927       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 928
 929    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 930    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 931    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 932
 933    if (dri2_dpy->configOptions) {
 934        disp->Extensions.MESA_query_driver = EGL_TRUE;
 935    }
 936
 937    /* Report back to EGL the bitmask of priorities supported */
 938    disp->Extensions.IMG_context_priority =
 939       dri2_renderer_query_integer(dri2_dpy,
 940                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 941
 942    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 943
 944    if (dri2_renderer_query_integer(dri2_dpy,
 945                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 946       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 947
 948    if (dri2_dpy->image_driver ||
 949        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 950        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 951       disp->Extensions.KHR_create_context = EGL_TRUE;
 952
 953       if (dri2_dpy->robustness)
 954          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 955    }
 956
 957    if (dri2_dpy->no_error)
 958       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 959
 960    if (dri2_dpy->fence) {
 961       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 962       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 963       if (dri2_dpy->fence->get_fence_from_cl_event)
 964          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 965       if (dri2_dpy->fence->base.version >= 2 &&
 966           dri2_dpy->fence->get_capabilities) {
 967          unsigned capabilities =
 968             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 969          disp->Extensions.ANDROID_native_fence_sync =
 970             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 971       }
 972    }
 973
 974    if (dri2_dpy->blob)
 975       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 976
 977    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 978
 979    if (dri2_dpy->image) {
 980       if (dri2_dpy->image->base.version >= 10 &&
 981           dri2_dpy->image->getCapabilities != NULL) {
 982          int capabilities;
 983
 984          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 985          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 986
 987          if (dri2_dpy->image->base.version >= 11)
 988             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 989       } else {
 990          disp->Extensions.MESA_drm_image = EGL_TRUE;
 991          if (dri2_dpy->image->base.version >= 11)
 992             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 993       }
 994
 995       disp->Extensions.KHR_image_base = EGL_TRUE;
 996       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 997       if (dri2_dpy->image->base.version >= 5 &&
 998           dri2_dpy->image->createImageFromTexture) {
 999          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
1000          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
1001
1002          if (dri2_renderer_query_integer(dri2_dpy,
1003                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
1004              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
1005       }
1006 #ifdef HAVE_LIBDRM
1007       if (dri2_dpy->image->base.version >= 8 &&
1008           dri2_dpy->image->createImageFromDmaBufs) {
1009          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
1010          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
1011       }
1012 #endif
1013    }
1014
1015    if (dri2_dpy->flush_control)
1016       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
1017
1018    if (dri2_dpy->buffer_damage && dri2_dpy->buffer_damage->set_damage_region)
1019       disp->Extensions.KHR_partial_update = EGL_TRUE;
1020 }
1021
1022 void
1023 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
1024 {
1025    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1026    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1027
1028    /* Allow driconf to override applications.*/
1029    if (dri2_dpy->config)
1030       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1031                                      "vblank_mode", &vblank_mode);
1032    switch (vblank_mode) {
1033    case DRI_CONF_VBLANK_NEVER:
1034       dri2_dpy->min_swap_interval = 0;
1035       dri2_dpy->max_swap_interval = 0;
1036       dri2_dpy->default_swap_interval = 0;
1037       break;
1038    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1039       dri2_dpy->min_swap_interval = 1;
1040       dri2_dpy->max_swap_interval = max_swap_interval;
1041       dri2_dpy->default_swap_interval = 1;
1042       break;
1043    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1044       dri2_dpy->min_swap_interval = 0;
1045       dri2_dpy->max_swap_interval = max_swap_interval;
1046       dri2_dpy->default_swap_interval = 0;
1047       break;
1048    default:
1049    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1050       dri2_dpy->min_swap_interval = 0;
1051       dri2_dpy->max_swap_interval = max_swap_interval;
1052       dri2_dpy->default_swap_interval = 1;
1053       break;
1054    }
1055 }
1056
1057 /* All platforms but DRM call this function to create the screen and populate
1058  * the driver_configs. DRM inherits that information from its display - GBM.
1059  */
1060 EGLBoolean
1061 dri2_create_screen(_EGLDisplay *disp)
1062 {
1063    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1064
1065    if (dri2_dpy->image_driver) {
1066       dri2_dpy->dri_screen =
1067          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
1068                                                   dri2_dpy->loader_extensions,
1069                                                   dri2_dpy->driver_extensions,
1070                                                   &dri2_dpy->driver_configs,
1071                                                   disp);
1072    } else if (dri2_dpy->dri2) {
1073       if (dri2_dpy->dri2->base.version >= 4) {
1074          dri2_dpy->dri_screen =
1075             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
1076                                              dri2_dpy->loader_extensions,
1077                                              dri2_dpy->driver_extensions,
1078                                              &dri2_dpy->driver_configs, disp);
1079       } else {
1080          dri2_dpy->dri_screen =
1081             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
1082                                             dri2_dpy->loader_extensions,
1083                                             &dri2_dpy->driver_configs, disp);
1084       }
1085    } else {
1086       assert(dri2_dpy->swrast);
1087       if (dri2_dpy->swrast->base.version >= 4) {
1088          dri2_dpy->dri_screen =
1089             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
1090                                                dri2_dpy->driver_extensions,
1091                                                &dri2_dpy->driver_configs, disp);
1092       } else {
1093          dri2_dpy->dri_screen =
1094             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
1095                                               &dri2_dpy->driver_configs, disp);
1096       }
1097    }
1098
1099    if (dri2_dpy->dri_screen == NULL) {
1100       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
1101       return EGL_FALSE;
1102    }
1103
1104    dri2_dpy->own_dri_screen = true;
1105    return EGL_TRUE;
1106 }
1107
1108 EGLBoolean
1109 dri2_setup_extensions(_EGLDisplay *disp)
1110 {
1111    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1112    const struct dri2_extension_match *mandatory_core_extensions;
1113    const __DRIextension **extensions;
1114
1115    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
1116
1117    if (dri2_dpy->image_driver || dri2_dpy->dri2)
1118       mandatory_core_extensions = dri2_core_extensions;
1119    else
1120       mandatory_core_extensions = swrast_core_extensions;
1121
1122    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
1123       return EGL_FALSE;
1124
1125 #ifdef HAVE_DRI3_MODIFIERS
1126    dri2_dpy->multibuffers_available =
1127       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
1128                                             dri2_dpy->dri3_minor_version >= 2)) &&
1129       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
1130                                                dri2_dpy->present_minor_version >= 2)) &&
1131       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
1132 #endif
1133
1134    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
1135    return EGL_TRUE;
1136 }
1137
1138 /**
1139  * Called via eglInitialize(), drv->Initialize().
1140  *
1141  * This must be guaranteed to be called exactly once, even if eglInitialize is
1142  * called many times (without a eglTerminate in between).
1143  */
1144 static EGLBoolean
1145 dri2_initialize(_EGLDisplay *disp)
1146 {
1147    EGLBoolean ret = EGL_FALSE;
1148    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1149
1150    /* In the case where the application calls eglMakeCurrent(context1),
1151     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
1152     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
1153     * initialized, as we need it to be able to free context1 correctly.
1154     *
1155     * It would probably be safest to forcibly release the display with
1156     * dri2_display_release, to make sure the display is reinitialized correctly.
1157     * However, the EGL spec states that we need to keep a reference to the
1158     * current context (so we cannot call dri2_make_current(NULL)), and therefore
1159     * we would leak context1 as we would be missing the old display connection
1160     * to free it up correctly.
1161     */
1162    if (dri2_dpy) {
1163       dri2_dpy->ref_count++;
1164       return EGL_TRUE;
1165    }
1166
1167    loader_set_logger(_eglLog);
1168
1169    switch (disp->Platform) {
1170    case _EGL_PLATFORM_SURFACELESS:
1171       ret = dri2_initialize_surfaceless(disp);
1172       break;
1173    case _EGL_PLATFORM_DEVICE:
1174       ret = dri2_initialize_device(disp);
1175       break;
1176    case _EGL_PLATFORM_X11:
1177       ret = dri2_initialize_x11(disp);
1178       break;
1179    case _EGL_PLATFORM_DRM:
1180       ret = dri2_initialize_drm(disp);
1181       break;
1182    case _EGL_PLATFORM_WAYLAND:
1183       ret = dri2_initialize_wayland(disp);
1184       break;
1185    case _EGL_PLATFORM_ANDROID:
1186       ret = dri2_initialize_android(disp);
1187       break;
1188    default:
1189       unreachable("Callers ensure we cannot get here.");
1190       return EGL_FALSE;
1191    }
1192
1193    if (!ret)
1194       return EGL_FALSE;
1195
1196    dri2_dpy = dri2_egl_display(disp);
1197    dri2_dpy->ref_count++;
1198
1199    return EGL_TRUE;
1200 }
1201
1202 /**
1203  * Decrement display reference count, and free up display if necessary.
1204  */
1205 static void
1206 dri2_display_release(_EGLDisplay *disp)
1207 {
1208    struct dri2_egl_display *dri2_dpy;
1209
1210    if (!disp)
1211       return;
1212
1213    dri2_dpy = dri2_egl_display(disp);
1214
1215    assert(dri2_dpy->ref_count > 0);
1216    dri2_dpy->ref_count--;
1217
1218    if (dri2_dpy->ref_count > 0)
1219       return;
1220
1221    _eglCleanupDisplay(disp);
1222    dri2_display_destroy(disp);
1223 }
1224
1225 void
1226 dri2_display_destroy(_EGLDisplay *disp)
1227 {
1228    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1229
1230    if (dri2_dpy->own_dri_screen) {
1231       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
1232          dri2_dpy->vtbl->close_screen_notify(disp);
1233       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1234    }
1235    if (dri2_dpy->fd >= 0)
1236       close(dri2_dpy->fd);
1237    if (dri2_dpy->driver)
1238       dlclose(dri2_dpy->driver);
1239    free(dri2_dpy->driver_name);
1240
1241 #ifdef HAVE_WAYLAND_PLATFORM
1242    free(dri2_dpy->device_name);
1243 #endif
1244
1245    switch (disp->Platform) {
1246    case _EGL_PLATFORM_X11:
1247       dri2_teardown_x11(dri2_dpy);
1248       break;
1249    case _EGL_PLATFORM_DRM:
1250       dri2_teardown_drm(dri2_dpy);
1251       break;
1252    case _EGL_PLATFORM_WAYLAND:
1253       dri2_teardown_wayland(dri2_dpy);
1254       break;
1255    default:
1256       /* TODO: add teardown for other platforms */
1257       break;
1258    }
1259
1260    /* The drm platform does not create the screen/driver_configs but reuses
1261     * the ones from the gbm device. As such the gbm itself is responsible
1262     * for the cleanup.
1263     */
1264    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1265       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1266          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1267       free(dri2_dpy->driver_configs);
1268    }
1269    free(dri2_dpy);
1270    disp->DriverData = NULL;
1271 }
1272
1273 __DRIbuffer *
1274 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1275                                     unsigned int att, unsigned int format)
1276 {
1277    struct dri2_egl_display *dri2_dpy =
1278       dri2_egl_display(dri2_surf->base.Resource.Display);
1279
1280    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1281       return NULL;
1282
1283    if (!dri2_surf->local_buffers[att]) {
1284       dri2_surf->local_buffers[att] =
1285          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1286                                         dri2_surf->base.Width, dri2_surf->base.Height);
1287    }
1288
1289    return dri2_surf->local_buffers[att];
1290 }
1291
1292 void
1293 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1294 {
1295    struct dri2_egl_display *dri2_dpy =
1296       dri2_egl_display(dri2_surf->base.Resource.Display);
1297
1298    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1299       if (dri2_surf->local_buffers[i]) {
1300          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1301                                        dri2_surf->local_buffers[i]);
1302          dri2_surf->local_buffers[i] = NULL;
1303       }
1304    }
1305 }
1306
1307 /**
1308  * Called via eglTerminate(), drv->Terminate().
1309  *
1310  * This must be guaranteed to be called exactly once, even if eglTerminate is
1311  * called many times (without a eglInitialize in between).
1312  */
1313 static EGLBoolean
1314 dri2_terminate(_EGLDisplay *disp)
1315 {
1316    /* Release all non-current Context/Surfaces. */
1317    _eglReleaseDisplayResources(disp);
1318
1319    dri2_display_release(disp);
1320
1321    return EGL_TRUE;
1322 }
1323
1324 /**
1325  * Set the error code after a call to
1326  * dri2_egl_display::dri2::createContextAttribs.
1327  */
1328 static void
1329 dri2_create_context_attribs_error(int dri_error)
1330 {
1331    EGLint egl_error;
1332
1333    switch (dri_error) {
1334    case __DRI_CTX_ERROR_SUCCESS:
1335       return;
1336
1337    case __DRI_CTX_ERROR_NO_MEMORY:
1338       egl_error = EGL_BAD_ALLOC;
1339       break;
1340
1341   /* From the EGL_KHR_create_context spec, section "Errors":
1342    *
1343    *   * If <config> does not support a client API context compatible
1344    *     with the requested API major and minor version, [...] context flags,
1345    *     and context reset notification behavior (for client API types where
1346    *     these attributes are supported), then an EGL_BAD_MATCH error is
1347    *     generated.
1348    *
1349    *   * If an OpenGL ES context is requested and the values for
1350    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1351    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1352    *     is not defined, than an EGL_BAD_MATCH error is generated.
1353    *
1354    *   * If an OpenGL context is requested, the requested version is
1355    *     greater than 3.2, and the value for attribute
1356    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1357    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1358    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1359    *     one of these bits set; or if the implementation does not support
1360    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1361    */
1362    case __DRI_CTX_ERROR_BAD_API:
1363    case __DRI_CTX_ERROR_BAD_VERSION:
1364    case __DRI_CTX_ERROR_BAD_FLAG:
1365       egl_error = EGL_BAD_MATCH;
1366       break;
1367
1368   /* From the EGL_KHR_create_context spec, section "Errors":
1369    *
1370    *   * If an attribute name or attribute value in <attrib_list> is not
1371    *     recognized (including unrecognized bits in bitmask attributes),
1372    *     then an EGL_BAD_ATTRIBUTE error is generated."
1373    */
1374    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1375    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1376       egl_error = EGL_BAD_ATTRIBUTE;
1377       break;
1378
1379    default:
1380       assert(!"unknown dri_error code");
1381       egl_error = EGL_BAD_MATCH;
1382       break;
1383    }
1384
1385    _eglError(egl_error, "dri2_create_context");
1386 }
1387
1388 static bool
1389 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1390                           struct dri2_egl_display *dri2_dpy,
1391                           uint32_t *ctx_attribs,
1392                           unsigned *num_attribs)
1393 {
1394    int pos = 0;
1395
1396    assert(*num_attribs >= NUM_ATTRIBS);
1397
1398    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1399    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1400    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1401    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1402
1403    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1404       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1405        * extension, don't even try to send it the robust-access flag.
1406        * It may explode.  Instead, generate the required EGL error here.
1407        */
1408       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1409             && !dri2_dpy->robustness) {
1410          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1411          return false;
1412       }
1413
1414       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1415       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1416          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1417    }
1418
1419    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1420       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1421        * extension, don't even try to send it a reset strategy.  It may
1422        * explode.  Instead, generate the required EGL error here.
1423        */
1424       if (!dri2_dpy->robustness) {
1425          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1426          return false;
1427       }
1428
1429       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1430       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1431    }
1432
1433    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1434       unsigned val;
1435
1436       switch (dri2_ctx->base.ContextPriority) {
1437       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1438          val = __DRI_CTX_PRIORITY_HIGH;
1439          break;
1440       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1441          val = __DRI_CTX_PRIORITY_MEDIUM;
1442          break;
1443       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1444          val = __DRI_CTX_PRIORITY_LOW;
1445          break;
1446       default:
1447          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1448          return false;
1449       }
1450
1451       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1452       ctx_attribs[pos++] = val;
1453    }
1454
1455    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1456       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1457       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1458    }
1459
1460    *num_attribs = pos;
1461
1462    return true;
1463 }
1464
1465 /**
1466  * Called via eglCreateContext(), drv->CreateContext().
1467  */
1468 static _EGLContext *
1469 dri2_create_context(_EGLDisplay *disp, _EGLConfig *conf,
1470                     _EGLContext *share_list, const EGLint *attrib_list)
1471 {
1472    struct dri2_egl_context *dri2_ctx;
1473    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1474    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1475    __DRIcontext *shared =
1476       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1477    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1478    const __DRIconfig *dri_config;
1479    int api;
1480    unsigned error;
1481    unsigned num_attribs = NUM_ATTRIBS;
1482    uint32_t ctx_attribs[NUM_ATTRIBS];
1483
1484    dri2_ctx = malloc(sizeof *dri2_ctx);
1485    if (!dri2_ctx) {
1486       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1487       return NULL;
1488    }
1489
1490    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1491       goto cleanup;
1492
1493    /* The EGL_EXT_create_context_robustness spec says:
1494     *
1495     *    "Add to the eglCreateContext context creation errors: [...]
1496     *
1497     *     * If the reset notification behavior of <share_context> and the
1498     *       newly created context are different then an EGL_BAD_MATCH error is
1499     *       generated."
1500     */
1501    if (share_list && share_list->ResetNotificationStrategy !=
1502                      dri2_ctx->base.ResetNotificationStrategy) {
1503       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1504       goto cleanup;
1505    }
1506
1507    /* The EGL_KHR_create_context_no_error spec says:
1508     *
1509     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1510     *    used to create <share_context> does not match the value of
1511     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1512     */
1513    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1514       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1515       goto cleanup;
1516    }
1517
1518    switch (dri2_ctx->base.ClientAPI) {
1519    case EGL_OPENGL_ES_API:
1520       switch (dri2_ctx->base.ClientMajorVersion) {
1521       case 1:
1522          api = __DRI_API_GLES;
1523          break;
1524       case 2:
1525          api = __DRI_API_GLES2;
1526          break;
1527       case 3:
1528          api = __DRI_API_GLES3;
1529          break;
1530       default:
1531          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1532          free(dri2_ctx);
1533          return NULL;
1534       }
1535       break;
1536    case EGL_OPENGL_API:
1537       if ((dri2_ctx->base.ClientMajorVersion >= 4
1538            || (dri2_ctx->base.ClientMajorVersion == 3
1539                && dri2_ctx->base.ClientMinorVersion >= 2))
1540           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1541          api = __DRI_API_OPENGL_CORE;
1542       else if (dri2_ctx->base.ClientMajorVersion == 3 &&
1543                dri2_ctx->base.ClientMinorVersion == 1)
1544          api = __DRI_API_OPENGL_CORE;
1545       else
1546          api = __DRI_API_OPENGL;
1547       break;
1548    default:
1549       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1550       free(dri2_ctx);
1551       return NULL;
1552    }
1553
1554    if (conf != NULL) {
1555       /* The config chosen here isn't necessarily
1556        * used for surfaces later.
1557        * A pixmap surface will use the single config.
1558        * This opportunity depends on disabling the
1559        * doubleBufferMode check in
1560        * src/mesa/main/context.c:check_compatible()
1561        */
1562       if (dri2_config->dri_config[1][0])
1563          dri_config = dri2_config->dri_config[1][0];
1564       else
1565          dri_config = dri2_config->dri_config[0][0];
1566    }
1567    else
1568       dri_config = NULL;
1569
1570    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1571                                   &num_attribs))
1572       goto cleanup;
1573
1574    if (dri2_dpy->image_driver) {
1575       dri2_ctx->dri_context =
1576          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1577                                                       api,
1578                                                       dri_config,
1579                                                       shared,
1580                                                       num_attribs / 2,
1581                                                       ctx_attribs,
1582                                                       & error,
1583                                                       dri2_ctx);
1584       dri2_create_context_attribs_error(error);
1585    } else if (dri2_dpy->dri2) {
1586       if (dri2_dpy->dri2->base.version >= 3) {
1587          dri2_ctx->dri_context =
1588             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1589                                                  api,
1590                                                  dri_config,
1591                                                  shared,
1592                                                  num_attribs / 2,
1593                                                  ctx_attribs,
1594                                                  & error,
1595                                                  dri2_ctx);
1596          dri2_create_context_attribs_error(error);
1597       } else {
1598          dri2_ctx->dri_context =
1599             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1600                                                    api,
1601                                                    dri_config,
1602                                                    shared,
1603                                                    dri2_ctx);
1604       }
1605    } else {
1606       assert(dri2_dpy->swrast);
1607       if (dri2_dpy->swrast->base.version >= 3) {
1608          dri2_ctx->dri_context =
1609             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1610                                                    api,
1611                                                    dri_config,
1612                                                    shared,
1613                                                    num_attribs / 2,
1614                                                    ctx_attribs,
1615                                                    & error,
1616                                                    dri2_ctx);
1617          dri2_create_context_attribs_error(error);
1618       } else {
1619          dri2_ctx->dri_context =
1620             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1621                                                      api,
1622                                                      dri_config,
1623                                                      shared,
1624                                                      dri2_ctx);
1625       }
1626    }
1627
1628    if (!dri2_ctx->dri_context)
1629       goto cleanup;
1630
1631    return &dri2_ctx->base;
1632
1633  cleanup:
1634    free(dri2_ctx);
1635    return NULL;
1636 }
1637
1638 /**
1639  * Called via eglDestroyContext(), drv->DestroyContext().
1640  */
1641 static EGLBoolean
1642 dri2_destroy_context(_EGLDisplay *disp, _EGLContext *ctx)
1643 {
1644    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1645    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1646
1647    if (_eglPutContext(ctx)) {
1648       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1649       free(dri2_ctx);
1650    }
1651
1652    return EGL_TRUE;
1653 }
1654
1655 EGLBoolean
1656 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1657         _EGLConfig *conf, const EGLint *attrib_list,
1658         EGLBoolean enable_out_fence, void *native_surface)
1659 {
1660    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1661    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1662
1663    dri2_surf->out_fence_fd = -1;
1664    dri2_surf->enable_out_fence = false;
1665    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1666        dri2_dpy->fence->get_capabilities &&
1667        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1668         __DRI_FENCE_CAP_NATIVE_FD)) {
1669       dri2_surf->enable_out_fence = enable_out_fence;
1670    }
1671
1672    return _eglInitSurface(surf, disp, type, conf, attrib_list, native_surface);
1673 }
1674
1675 static void
1676 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1677 {
1678    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1679
1680    if (dri2_surf->out_fence_fd >= 0)
1681       close(dri2_surf->out_fence_fd);
1682
1683    dri2_surf->out_fence_fd = fence_fd;
1684 }
1685
1686 void
1687 dri2_fini_surface(_EGLSurface *surf)
1688 {
1689    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1690
1691    dri2_surface_set_out_fence_fd(surf, -1);
1692    dri2_surf->enable_out_fence = false;
1693 }
1694
1695 static EGLBoolean
1696 dri2_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
1697 {
1698    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1699
1700    if (!_eglPutSurface(surf))
1701       return EGL_TRUE;
1702
1703    return dri2_dpy->vtbl->destroy_surface(disp, surf);
1704 }
1705
1706 static void
1707 dri2_surf_update_fence_fd(_EGLContext *ctx,
1708                           _EGLDisplay *disp, _EGLSurface *surf)
1709 {
1710    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1711    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1712    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1713    int fence_fd = -1;
1714    void *fence;
1715
1716    if (!dri2_surf->enable_out_fence)
1717       return;
1718
1719    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1720    if (fence) {
1721       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1722                                                fence);
1723       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1724    }
1725    dri2_surface_set_out_fence_fd(surf, fence_fd);
1726 }
1727
1728 EGLBoolean
1729 dri2_create_drawable(struct dri2_egl_display *dri2_dpy,
1730                      const __DRIconfig *config,
1731                      struct dri2_egl_surface *dri2_surf,
1732                      void *loaderPrivate)
1733 {
1734    __DRIcreateNewDrawableFunc createNewDrawable;
1735
1736    if (dri2_dpy->image_driver)
1737       createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
1738    else if (dri2_dpy->dri2)
1739       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
1740    else if (dri2_dpy->swrast)
1741       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
1742    else
1743       return _eglError(EGL_BAD_ALLOC, "no createNewDrawable");
1744
1745    dri2_surf->dri_drawable = createNewDrawable(dri2_dpy->dri_screen,
1746                                                config, loaderPrivate);
1747    if (dri2_surf->dri_drawable == NULL)
1748       return _eglError(EGL_BAD_ALLOC, "createNewDrawable");
1749
1750    return EGL_TRUE;
1751 }
1752
1753 /**
1754  * Called via eglMakeCurrent(), drv->MakeCurrent().
1755  */
1756 static EGLBoolean
1757 dri2_make_current(_EGLDisplay *disp, _EGLSurface *dsurf,
1758                   _EGLSurface *rsurf, _EGLContext *ctx)
1759 {
1760    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1761    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1762    _EGLDisplay *old_disp = NULL;
1763    struct dri2_egl_display *old_dri2_dpy = NULL;
1764    _EGLContext *old_ctx;
1765    _EGLSurface *old_dsurf, *old_rsurf;
1766    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1767    __DRIdrawable *ddraw, *rdraw;
1768    __DRIcontext *cctx;
1769    EGLint egl_error = EGL_SUCCESS;
1770
1771    if (!dri2_dpy)
1772       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1773
1774    /* make new bindings, set the EGL error otherwise */
1775    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
1776       return EGL_FALSE;
1777
1778    if (old_ctx) {
1779       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1780       old_disp = old_ctx->Resource.Display;
1781       old_dri2_dpy = dri2_egl_display(old_disp);
1782
1783       /* flush before context switch */
1784       dri2_gl_flush();
1785
1786       if (old_dsurf)
1787          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1788
1789       /* Disable shared buffer mode */
1790       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1791           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1792          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1793       }
1794
1795       dri2_dpy->core->unbindContext(old_cctx);
1796    }
1797
1798    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1799    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1800    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1801
1802    if (cctx || ddraw || rdraw) {
1803       if (!dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1804          _EGLContext *tmp_ctx;
1805
1806          /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1807           * setting the error to EGL_BAD_MATCH is surely better than leaving it
1808           * as EGL_SUCCESS.
1809           */
1810          egl_error = EGL_BAD_MATCH;
1811
1812          /* undo the previous _eglBindContext */
1813          _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1814          assert(&dri2_ctx->base == ctx &&
1815                 tmp_dsurf == dsurf &&
1816                 tmp_rsurf == rsurf);
1817
1818          _eglPutSurface(dsurf);
1819          _eglPutSurface(rsurf);
1820          _eglPutContext(ctx);
1821
1822          _eglPutSurface(old_dsurf);
1823          _eglPutSurface(old_rsurf);
1824          _eglPutContext(old_ctx);
1825
1826          ddraw = (old_dsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_dsurf) : NULL;
1827          rdraw = (old_rsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_rsurf) : NULL;
1828          cctx = (old_ctx) ? dri2_egl_context(old_ctx)->dri_context : NULL;
1829
1830          /* undo the previous dri2_dpy->core->unbindContext */
1831          if (dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1832             if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1833                 old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1834                old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1835             }
1836
1837             return _eglError(egl_error, "eglMakeCurrent");
1838          }
1839
1840          /* We cannot restore the same state as it was before calling
1841           * eglMakeCurrent() and the spec isn't clear about what to do. We
1842           * can prevent EGL from calling into the DRI driver with no DRI
1843           * context bound.
1844           */
1845          dsurf = rsurf = NULL;
1846          ctx = NULL;
1847
1848          _eglBindContext(ctx, dsurf, rsurf, &tmp_ctx, &tmp_dsurf, &tmp_rsurf);
1849          assert(tmp_ctx == old_ctx && tmp_dsurf == old_dsurf &&
1850                 tmp_rsurf == old_rsurf);
1851
1852          _eglLog(_EGL_WARNING, "DRI2: failed to rebind the previous context");
1853       } else {
1854          /* dri2_dpy->core->bindContext succeeded, so take a reference on the
1855           * dri2_dpy. This prevents dri2_dpy from being reinitialized when a
1856           * EGLDisplay is terminated and then initialized again while a
1857           * context is still bound. See dri2_intitialize() for a more in depth
1858           * explanation. */
1859          dri2_dpy->ref_count++;
1860       }
1861    }
1862
1863    dri2_destroy_surface(disp, old_dsurf);
1864    dri2_destroy_surface(disp, old_rsurf);
1865
1866    if (old_ctx) {
1867       dri2_destroy_context(disp, old_ctx);
1868       dri2_display_release(old_disp);
1869    }
1870
1871    if (egl_error != EGL_SUCCESS)
1872       return _eglError(egl_error, "eglMakeCurrent");
1873
1874    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1875        dri2_dpy->vtbl->set_shared_buffer_mode) {
1876       /* Always update the shared buffer mode. This is obviously needed when
1877        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1878        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1879        * case where external non-EGL API may have changed window's shared
1880        * buffer mode since we last saw it.
1881        */
1882       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1883       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1884    }
1885
1886    return EGL_TRUE;
1887 }
1888
1889 __DRIdrawable *
1890 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1891 {
1892    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1893
1894    return dri2_surf->dri_drawable;
1895 }
1896
1897 /*
1898  * Called from eglGetProcAddress() via drv->GetProcAddress().
1899  */
1900 static _EGLProc
1901 dri2_get_proc_address(const _EGLDriver *drv, const char *procname)
1902 {
1903    return _glapi_get_proc_address(procname);
1904 }
1905
1906 static _EGLSurface*
1907 dri2_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
1908                            void *native_window, const EGLint *attrib_list)
1909 {
1910    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1911    return dri2_dpy->vtbl->create_window_surface(disp, conf, native_window,
1912                                                 attrib_list);
1913 }
1914
1915 static _EGLSurface*
1916 dri2_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
1917                            void *native_pixmap, const EGLint *attrib_list)
1918 {
1919    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1920    if (!dri2_dpy->vtbl->create_pixmap_surface)
1921       return NULL;
1922    return dri2_dpy->vtbl->create_pixmap_surface(disp, conf, native_pixmap,
1923                                                 attrib_list);
1924 }
1925
1926 static _EGLSurface*
1927 dri2_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
1928                             const EGLint *attrib_list)
1929 {
1930    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1931    if (!dri2_dpy->vtbl->create_pbuffer_surface)
1932       return NULL;
1933    return dri2_dpy->vtbl->create_pbuffer_surface(disp, conf, attrib_list);
1934 }
1935
1936 static EGLBoolean
1937 dri2_swap_interval(_EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
1938 {
1939    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1940    if (!dri2_dpy->vtbl->swap_interval)
1941       return EGL_TRUE;
1942    return dri2_dpy->vtbl->swap_interval(disp, surf, interval);
1943 }
1944
1945 /**
1946  * Asks the client API to flush any rendering to the drawable so that we can
1947  * do our swapbuffers.
1948  */
1949 void
1950 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1951 {
1952    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1953    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1954
1955    if (dri2_dpy->flush) {
1956       if (dri2_dpy->flush->base.version >= 4) {
1957          /* We know there's a current context because:
1958           *
1959           *     "If surface is not bound to the calling thread’s current
1960           *      context, an EGL_BAD_SURFACE error is generated."
1961          */
1962          _EGLContext *ctx = _eglGetCurrentContext();
1963          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1964
1965          /* From the EGL 1.4 spec (page 52):
1966           *
1967           *     "The contents of ancillary buffers are always undefined
1968           *      after calling eglSwapBuffers."
1969           */
1970          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1971                                            dri_drawable,
1972                                            __DRI2_FLUSH_DRAWABLE |
1973                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1974                                            __DRI2_THROTTLE_SWAPBUFFER);
1975       } else {
1976          dri2_dpy->flush->flush(dri_drawable);
1977       }
1978    }
1979 }
1980
1981 static EGLBoolean
1982 dri2_swap_buffers(_EGLDisplay *disp, _EGLSurface *surf)
1983 {
1984    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1985    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1986    _EGLContext *ctx = _eglGetCurrentContext();
1987    EGLBoolean ret;
1988
1989    if (ctx && surf)
1990       dri2_surf_update_fence_fd(ctx, disp, surf);
1991    ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
1992
1993    /* SwapBuffers marks the end of the frame; reset the damage region for
1994     * use again next time.
1995     */
1996    if (ret && dri2_dpy->buffer_damage &&
1997        dri2_dpy->buffer_damage->set_damage_region)
1998       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
1999
2000    return ret;
2001 }
2002
2003 static EGLBoolean
2004 dri2_swap_buffers_with_damage(_EGLDisplay *disp, _EGLSurface *surf,
2005                               const EGLint *rects, EGLint n_rects)
2006 {
2007    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2008    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2009    _EGLContext *ctx = _eglGetCurrentContext();
2010    EGLBoolean ret;
2011
2012    if (ctx && surf)
2013       dri2_surf_update_fence_fd(ctx, disp, surf);
2014    if (dri2_dpy->vtbl->swap_buffers_with_damage)
2015       ret = dri2_dpy->vtbl->swap_buffers_with_damage(disp, surf,
2016                                                      rects, n_rects);
2017    else
2018       ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2019
2020    /* SwapBuffers marks the end of the frame; reset the damage region for
2021     * use again next time.
2022     */
2023    if (ret && dri2_dpy->buffer_damage &&
2024        dri2_dpy->buffer_damage->set_damage_region)
2025       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2026
2027    return ret;
2028 }
2029
2030 static EGLBoolean
2031 dri2_swap_buffers_region(_EGLDisplay *disp, _EGLSurface *surf,
2032                          EGLint numRects, const EGLint *rects)
2033 {
2034    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2035    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2036    EGLBoolean ret;
2037
2038    if (!dri2_dpy->vtbl->swap_buffers_region)
2039       return EGL_FALSE;
2040    ret = dri2_dpy->vtbl->swap_buffers_region(disp, surf, numRects, rects);
2041
2042    /* SwapBuffers marks the end of the frame; reset the damage region for
2043     * use again next time.
2044     */
2045    if (ret && dri2_dpy->buffer_damage &&
2046        dri2_dpy->buffer_damage->set_damage_region)
2047       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2048
2049    return ret;
2050 }
2051
2052 static EGLBoolean
2053 dri2_set_damage_region(_EGLDisplay *disp, _EGLSurface *surf,
2054                        EGLint *rects, EGLint n_rects)
2055 {
2056    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2057    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2058
2059    if (!dri2_dpy->buffer_damage || !dri2_dpy->buffer_damage->set_damage_region)
2060       return EGL_FALSE;
2061
2062    dri2_dpy->buffer_damage->set_damage_region(drawable, n_rects, rects);
2063    return EGL_TRUE;
2064 }
2065
2066 static EGLBoolean
2067 dri2_post_sub_buffer(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2068                      EGLint x, EGLint y, EGLint width, EGLint height)
2069 {
2070    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2071    if (!dri2_dpy->vtbl->post_sub_buffer)
2072       return EGL_FALSE;
2073    return dri2_dpy->vtbl->post_sub_buffer(drv, disp, surf, x, y, width, height);
2074 }
2075
2076 static EGLBoolean
2077 dri2_copy_buffers(_EGLDisplay *disp, _EGLSurface *surf, void *native_pixmap_target)
2078 {
2079    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2080    if (!dri2_dpy->vtbl->copy_buffers)
2081       return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
2082    return dri2_dpy->vtbl->copy_buffers(disp, surf, native_pixmap_target);
2083 }
2084
2085 static EGLint
2086 dri2_query_buffer_age(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
2087 {
2088    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2089    if (!dri2_dpy->vtbl->query_buffer_age)
2090       return 0;
2091    return dri2_dpy->vtbl->query_buffer_age(drv, disp, surf);
2092 }
2093
2094 static EGLBoolean
2095 dri2_wait_client(_EGLDisplay *disp, _EGLContext *ctx)
2096 {
2097    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2098    _EGLSurface *surf = ctx->DrawSurface;
2099    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2100
2101    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
2102     * we need to copy fake to real here.*/
2103
2104    if (dri2_dpy->flush != NULL)
2105       dri2_dpy->flush->flush(dri_drawable);
2106
2107    return EGL_TRUE;
2108 }
2109
2110 static EGLBoolean
2111 dri2_wait_native(const _EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
2112 {
2113    (void) drv;
2114    (void) disp;
2115
2116    if (engine != EGL_CORE_NATIVE_ENGINE)
2117       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
2118    /* glXWaitX(); */
2119
2120    return EGL_TRUE;
2121 }
2122
2123 static EGLBoolean
2124 dri2_bind_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2125 {
2126    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2127    struct dri2_egl_context *dri2_ctx;
2128    _EGLContext *ctx;
2129    GLint format, target;
2130    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2131
2132    ctx = _eglGetCurrentContext();
2133    dri2_ctx = dri2_egl_context(ctx);
2134
2135    if (!_eglBindTexImage(disp, surf, buffer))
2136       return EGL_FALSE;
2137
2138    switch (surf->TextureFormat) {
2139    case EGL_TEXTURE_RGB:
2140       format = __DRI_TEXTURE_FORMAT_RGB;
2141       break;
2142    case EGL_TEXTURE_RGBA:
2143       format = __DRI_TEXTURE_FORMAT_RGBA;
2144       break;
2145    default:
2146       assert(!"Unexpected texture format in dri2_bind_tex_image()");
2147       format = __DRI_TEXTURE_FORMAT_RGBA;
2148    }
2149
2150    switch (surf->TextureTarget) {
2151    case EGL_TEXTURE_2D:
2152       target = GL_TEXTURE_2D;
2153       break;
2154    default:
2155       target = GL_TEXTURE_2D;
2156       assert(!"Unexpected texture target in dri2_bind_tex_image()");
2157    }
2158
2159    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
2160                                        target, format,
2161                                        dri_drawable);
2162
2163    return EGL_TRUE;
2164 }
2165
2166 static EGLBoolean
2167 dri2_release_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2168 {
2169    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2170    struct dri2_egl_context *dri2_ctx;
2171    _EGLContext *ctx;
2172    GLint  target;
2173    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2174
2175    ctx = _eglGetCurrentContext();
2176    dri2_ctx = dri2_egl_context(ctx);
2177
2178    if (!_eglReleaseTexImage(disp, surf, buffer))
2179       return EGL_FALSE;
2180
2181    switch (surf->TextureTarget) {
2182    case EGL_TEXTURE_2D:
2183       target = GL_TEXTURE_2D;
2184       break;
2185    default:
2186       assert(!"missing texture target");
2187    }
2188
2189    if (dri2_dpy->tex_buffer->base.version >= 3 &&
2190        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
2191       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
2192                                              target, dri_drawable);
2193    }
2194
2195    return EGL_TRUE;
2196 }
2197
2198 static _EGLImage*
2199 dri2_create_image(const _EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx,
2200                   EGLenum target, EGLClientBuffer buffer,
2201                   const EGLint *attr_list)
2202 {
2203    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2204    return dri2_dpy->vtbl->create_image(drv, disp, ctx, target, buffer,
2205                                        attr_list);
2206 }
2207
2208 static _EGLImage *
2209 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
2210 {
2211    struct dri2_egl_image *dri2_img;
2212
2213    if (dri_image == NULL) {
2214       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2215       return NULL;
2216    }
2217
2218    dri2_img = malloc(sizeof *dri2_img);
2219    if (!dri2_img) {
2220       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2221       return NULL;
2222    }
2223
2224    _eglInitImage(&dri2_img->base, disp);
2225
2226    dri2_img->dri_image = dri_image;
2227
2228    return &dri2_img->base;
2229 }
2230
2231 /**
2232  * Translate a DRI Image extension error code into an EGL error code.
2233  */
2234 static EGLint
2235 egl_error_from_dri_image_error(int dri_error)
2236 {
2237    switch (dri_error) {
2238    case __DRI_IMAGE_ERROR_SUCCESS:
2239       return EGL_SUCCESS;
2240    case __DRI_IMAGE_ERROR_BAD_ALLOC:
2241       return EGL_BAD_ALLOC;
2242    case __DRI_IMAGE_ERROR_BAD_MATCH:
2243       return EGL_BAD_MATCH;
2244    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
2245       return EGL_BAD_PARAMETER;
2246    case __DRI_IMAGE_ERROR_BAD_ACCESS:
2247       return EGL_BAD_ACCESS;
2248    default:
2249       assert(!"unknown dri_error code");
2250       return EGL_BAD_ALLOC;
2251    }
2252 }
2253
2254 static _EGLImage *
2255 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
2256                                    EGLClientBuffer buffer,
2257                                    const EGLint *attr_list)
2258 {
2259    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2260    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2261    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
2262    __DRIimage *dri_image;
2263
2264    if (renderbuffer == 0) {
2265       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2266       return EGL_NO_IMAGE_KHR;
2267    }
2268
2269    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
2270       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2271       return EGL_NO_IMAGE_KHR;
2272    }
2273
2274    if (dri2_dpy->image->base.version >= 17 &&
2275        dri2_dpy->image->createImageFromRenderbuffer2) {
2276       unsigned error = ~0;
2277
2278       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
2279                dri2_ctx->dri_context, renderbuffer, NULL, &error);
2280
2281       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
2282
2283       if (!dri_image) {
2284          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
2285          return EGL_NO_IMAGE_KHR;
2286       }
2287    } else {
2288       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
2289                dri2_ctx->dri_context, renderbuffer, NULL);
2290       if (!dri_image) {
2291          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2292          return EGL_NO_IMAGE_KHR;
2293       }
2294    }
2295
2296    return dri2_create_image_from_dri(disp, dri_image);
2297 }
2298
2299 #ifdef HAVE_WAYLAND_PLATFORM
2300
2301 /* This structure describes how a wl_buffer maps to one or more
2302  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
2303  * offsets and strides of the planes in the buffer.  This table maps a
2304  * wl_drm format code to a description of the planes in the buffer
2305  * that lets us create a __DRIimage for each of the planes. */
2306
2307 static const struct wl_drm_components_descriptor {
2308    uint32_t dri_components;
2309    EGLint components;
2310    int nplanes;
2311 } wl_drm_components[] = {
2312    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
2313    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
2314    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
2315    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
2316    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
2317 };
2318
2319 static _EGLImage *
2320 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2321                                     EGLClientBuffer _buffer,
2322                                     const EGLint *attr_list)
2323 {
2324    struct wl_drm_buffer *buffer;
2325    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2326    const struct wl_drm_components_descriptor *f;
2327    __DRIimage *dri_image;
2328    _EGLImageAttribs attrs;
2329    int32_t plane;
2330
2331    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
2332                                    (struct wl_resource *) _buffer);
2333    if (!buffer)
2334        return NULL;
2335
2336    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2337       return NULL;
2338
2339    plane = attrs.PlaneWL;
2340    f = buffer->driver_format;
2341    if (plane < 0 || plane >= f->nplanes) {
2342       _eglError(EGL_BAD_PARAMETER,
2343                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2344       return NULL;
2345    }
2346
2347    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2348    if (dri_image == NULL && plane == 0)
2349       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
2350    if (dri_image == NULL) {
2351       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2352       return NULL;
2353    }
2354
2355    return dri2_create_image_from_dri(disp, dri_image);
2356 }
2357 #endif
2358
2359 static EGLBoolean
2360 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
2361                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2362                               EGLuint64KHR *sbc)
2363 {
2364    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2365    if (!dri2_dpy->vtbl->get_sync_values)
2366       return EGL_FALSE;
2367    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
2368 }
2369
2370 /**
2371  * Set the error code after a call to
2372  * dri2_egl_image::dri_image::createImageFromTexture.
2373  */
2374 static void
2375 dri2_create_image_khr_texture_error(int dri_error)
2376 {
2377    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2378
2379    if (egl_error != EGL_SUCCESS)
2380       _eglError(egl_error, "dri2_create_image_khr_texture");
2381 }
2382
2383 static _EGLImage *
2384 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2385                                    EGLenum target,
2386                                    EGLClientBuffer buffer,
2387                                    const EGLint *attr_list)
2388 {
2389    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2390    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2391    struct dri2_egl_image *dri2_img;
2392    GLuint texture = (GLuint) (uintptr_t) buffer;
2393    _EGLImageAttribs attrs;
2394    GLuint depth;
2395    GLenum gl_target;
2396    unsigned error;
2397
2398    if (texture == 0) {
2399       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2400       return EGL_NO_IMAGE_KHR;
2401    }
2402
2403    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2404       return EGL_NO_IMAGE_KHR;
2405
2406    switch (target) {
2407    case EGL_GL_TEXTURE_2D_KHR:
2408       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2409          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2410          return EGL_NO_IMAGE_KHR;
2411       }
2412       depth = 0;
2413       gl_target = GL_TEXTURE_2D;
2414       break;
2415    case EGL_GL_TEXTURE_3D_KHR:
2416       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2417          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2418          return EGL_NO_IMAGE_KHR;
2419       }
2420
2421       depth = attrs.GLTextureZOffset;
2422       gl_target = GL_TEXTURE_3D;
2423       break;
2424    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2425    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2426    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2427    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2428    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2429    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2430       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2431          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2432          return EGL_NO_IMAGE_KHR;
2433       }
2434
2435       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2436       gl_target = GL_TEXTURE_CUBE_MAP;
2437       break;
2438    default:
2439       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2440       return EGL_NO_IMAGE_KHR;
2441    }
2442
2443    dri2_img = malloc(sizeof *dri2_img);
2444    if (!dri2_img) {
2445       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2446       return EGL_NO_IMAGE_KHR;
2447    }
2448
2449    _eglInitImage(&dri2_img->base, disp);
2450
2451    dri2_img->dri_image =
2452       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2453                                               gl_target,
2454                                               texture,
2455                                               depth,
2456                                               attrs.GLTextureLevel,
2457                                               &error,
2458                                               dri2_img);
2459    dri2_create_image_khr_texture_error(error);
2460
2461    if (!dri2_img->dri_image) {
2462       free(dri2_img);
2463       return EGL_NO_IMAGE_KHR;
2464    }
2465    return &dri2_img->base;
2466 }
2467
2468 static EGLBoolean
2469 dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
2470                    EGLint attribute, EGLint *value)
2471 {
2472    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2473    if (!dri2_dpy->vtbl->query_surface)
2474       return _eglQuerySurface(disp, surf, attribute, value);
2475    return dri2_dpy->vtbl->query_surface(disp, surf, attribute, value);
2476 }
2477
2478 static struct wl_buffer*
2479 dri2_create_wayland_buffer_from_image(const _EGLDriver *drv, _EGLDisplay *disp,
2480                                       _EGLImage *img)
2481 {
2482    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2483    if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
2484       return NULL;
2485    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, disp, img);
2486 }
2487
2488 #ifdef HAVE_LIBDRM
2489 static _EGLImage *
2490 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2491                                   EGLClientBuffer buffer, const EGLint *attr_list)
2492 {
2493    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2494    EGLint format, name, pitch;
2495    _EGLImageAttribs attrs;
2496    __DRIimage *dri_image;
2497
2498    name = (EGLint) (uintptr_t) buffer;
2499
2500    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2501       return NULL;
2502
2503    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2504        attrs.DRMBufferStrideMESA <= 0) {
2505       _eglError(EGL_BAD_PARAMETER,
2506                 "bad width, height or stride");
2507       return NULL;
2508    }
2509
2510    switch (attrs.DRMBufferFormatMESA) {
2511    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2512       format = __DRI_IMAGE_FORMAT_ARGB8888;
2513       pitch = attrs.DRMBufferStrideMESA;
2514       break;
2515    default:
2516       _eglError(EGL_BAD_PARAMETER,
2517                 "dri2_create_image_khr: unsupported pixmap depth");
2518       return NULL;
2519    }
2520
2521    dri_image =
2522       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2523                                            attrs.Width,
2524                                            attrs.Height,
2525                                            format,
2526                                            name,
2527                                            pitch,
2528                                            NULL);
2529
2530    return dri2_create_image_from_dri(disp, dri_image);
2531 }
2532
2533 static EGLBoolean
2534 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2535 {
2536    /**
2537      * The spec says:
2538      *
2539      * "Required attributes and their values are as follows:
2540      *
2541      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2542      *
2543      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2544      *    by drm_fourcc.h and used as the pixel_format parameter of the
2545      *    drm_mode_fb_cmd2 ioctl."
2546      *
2547      * and
2548      *
2549      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2550      *    incomplete, EGL_BAD_PARAMETER is generated."
2551      */
2552    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2553        !attrs->DMABufFourCC.IsPresent)
2554       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2555
2556    /**
2557     * Also:
2558     *
2559     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2560     *  specified for a plane's pitch or offset isn't supported by EGL,
2561     *  EGL_BAD_ACCESS is generated."
2562     */
2563    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2564       if (attrs->DMABufPlanePitches[i].IsPresent &&
2565           attrs->DMABufPlanePitches[i].Value <= 0)
2566          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2567    }
2568
2569    /**
2570     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2571     * attribute values may be given.
2572     *
2573     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2574     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2575     */
2576    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2577       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2578           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2579          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2580    }
2581
2582    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2583     * mandate it, we only accept the same modifier across all planes. */
2584    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2585       if (attrs->DMABufPlaneFds[i].IsPresent) {
2586          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2587                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2588              (attrs->DMABufPlaneModifiersLo[0].Value !=
2589                attrs->DMABufPlaneModifiersLo[i].Value) ||
2590              (attrs->DMABufPlaneModifiersHi[0].Value !=
2591                attrs->DMABufPlaneModifiersHi[i].Value))
2592             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2593       }
2594    }
2595
2596    return EGL_TRUE;
2597 }
2598
2599 /* Returns the total number of planes for the format or zero if it isn't a
2600  * valid fourcc format.
2601  */
2602 static unsigned
2603 dri2_num_fourcc_format_planes(EGLint format)
2604 {
2605    switch (format) {
2606    case DRM_FORMAT_R8:
2607    case DRM_FORMAT_RG88:
2608    case DRM_FORMAT_GR88:
2609    case DRM_FORMAT_R16:
2610    case DRM_FORMAT_GR1616:
2611    case DRM_FORMAT_RGB332:
2612    case DRM_FORMAT_BGR233:
2613    case DRM_FORMAT_XRGB4444:
2614    case DRM_FORMAT_XBGR4444:
2615    case DRM_FORMAT_RGBX4444:
2616    case DRM_FORMAT_BGRX4444:
2617    case DRM_FORMAT_ARGB4444:
2618    case DRM_FORMAT_ABGR4444:
2619    case DRM_FORMAT_RGBA4444:
2620    case DRM_FORMAT_BGRA4444:
2621    case DRM_FORMAT_XRGB1555:
2622    case DRM_FORMAT_XBGR1555:
2623    case DRM_FORMAT_RGBX5551:
2624    case DRM_FORMAT_BGRX5551:
2625    case DRM_FORMAT_ARGB1555:
2626    case DRM_FORMAT_ABGR1555:
2627    case DRM_FORMAT_RGBA5551:
2628    case DRM_FORMAT_BGRA5551:
2629    case DRM_FORMAT_RGB565:
2630    case DRM_FORMAT_BGR565:
2631    case DRM_FORMAT_RGB888:
2632    case DRM_FORMAT_BGR888:
2633    case DRM_FORMAT_XRGB8888:
2634    case DRM_FORMAT_XBGR8888:
2635    case DRM_FORMAT_RGBX8888:
2636    case DRM_FORMAT_BGRX8888:
2637    case DRM_FORMAT_ARGB8888:
2638    case DRM_FORMAT_ABGR8888:
2639    case DRM_FORMAT_RGBA8888:
2640    case DRM_FORMAT_BGRA8888:
2641    case DRM_FORMAT_XRGB2101010:
2642    case DRM_FORMAT_XBGR2101010:
2643    case DRM_FORMAT_RGBX1010102:
2644    case DRM_FORMAT_BGRX1010102:
2645    case DRM_FORMAT_ARGB2101010:
2646    case DRM_FORMAT_ABGR2101010:
2647    case DRM_FORMAT_RGBA1010102:
2648    case DRM_FORMAT_BGRA1010102:
2649    case DRM_FORMAT_XBGR16161616F:
2650    case DRM_FORMAT_ABGR16161616F:
2651    case DRM_FORMAT_YUYV:
2652    case DRM_FORMAT_YVYU:
2653    case DRM_FORMAT_UYVY:
2654    case DRM_FORMAT_VYUY:
2655    case DRM_FORMAT_AYUV:
2656    case DRM_FORMAT_XYUV8888:
2657       return 1;
2658
2659    case DRM_FORMAT_NV12:
2660    case DRM_FORMAT_NV21:
2661    case DRM_FORMAT_NV16:
2662    case DRM_FORMAT_NV61:
2663    case DRM_FORMAT_P010:
2664    case DRM_FORMAT_P012:
2665    case DRM_FORMAT_P016:
2666       return 2;
2667
2668    case DRM_FORMAT_YUV410:
2669    case DRM_FORMAT_YVU410:
2670    case DRM_FORMAT_YUV411:
2671    case DRM_FORMAT_YVU411:
2672    case DRM_FORMAT_YUV420:
2673    case DRM_FORMAT_YVU420:
2674    case DRM_FORMAT_YUV422:
2675    case DRM_FORMAT_YVU422:
2676    case DRM_FORMAT_YUV444:
2677    case DRM_FORMAT_YVU444:
2678       return 3;
2679
2680    default:
2681       return 0;
2682    }
2683 }
2684
2685 /* Returns the total number of file descriptors. Zero indicates an error. */
2686 static unsigned
2687 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2688 {
2689    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2690    if (plane_n == 0) {
2691       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2692       return 0;
2693    }
2694
2695    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2696       /**
2697        * The modifiers extension spec says:
2698        *
2699        * "Modifiers may modify any attribute of a buffer import, including
2700        *  but not limited to adding extra planes to a format which
2701        *  otherwise does not have those planes. As an example, a modifier
2702        *  may add a plane for an external compression buffer to a
2703        *  single-plane format. The exact meaning and effect of any
2704        *  modifier is canonically defined by drm_fourcc.h, not as part of
2705        *  this extension."
2706        */
2707       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2708           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2709          plane_n = i + 1;
2710       }
2711    }
2712
2713    /**
2714      * The spec says:
2715      *
2716      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2717      *    incomplete, EGL_BAD_PARAMETER is generated."
2718      */
2719    for (unsigned i = 0; i < plane_n; ++i) {
2720       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2721           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2722           !attrs->DMABufPlanePitches[i].IsPresent) {
2723          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2724          return 0;
2725       }
2726    }
2727
2728    /**
2729     * The spec also says:
2730     *
2731     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2732     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2733     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2734     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2735     */
2736    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2737       if (attrs->DMABufPlaneFds[i].IsPresent ||
2738           attrs->DMABufPlaneOffsets[i].IsPresent ||
2739           attrs->DMABufPlanePitches[i].IsPresent) {
2740          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2741          return 0;
2742       }
2743    }
2744
2745    return plane_n;
2746 }
2747
2748 static EGLBoolean
2749 dri2_query_dma_buf_formats(const _EGLDriver *drv, _EGLDisplay *disp,
2750                             EGLint max, EGLint *formats, EGLint *count)
2751 {
2752    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2753    if (max < 0 || (max > 0 && formats == NULL))
2754       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2755
2756    if (dri2_dpy->image->base.version < 15 ||
2757        dri2_dpy->image->queryDmaBufFormats == NULL)
2758       return EGL_FALSE;
2759
2760    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2761                                             formats, count))
2762       return EGL_FALSE;
2763
2764    if (max > 0) {
2765       /* Assert that all of the formats returned are actually fourcc formats.
2766        * Some day, if we want the internal interface function to be able to
2767        * return the fake fourcc formats defined in dri_interface.h, we'll have
2768        * to do something more clever here to pair the list down to just real
2769        * fourcc formats so that we don't leak the fake internal ones.
2770        */
2771       for (int i = 0; i < *count; i++) {
2772          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2773       }
2774    }
2775
2776    return EGL_TRUE;
2777 }
2778
2779 static EGLBoolean
2780 dri2_query_dma_buf_modifiers(const _EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2781                              EGLint max, EGLuint64KHR *modifiers,
2782                              EGLBoolean *external_only, EGLint *count)
2783 {
2784    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2785
2786    if (dri2_num_fourcc_format_planes(format) == 0)
2787       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2788
2789    if (max < 0)
2790       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2791
2792    if (max > 0 && modifiers == NULL)
2793       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2794
2795    if (dri2_dpy->image->base.version < 15 ||
2796        dri2_dpy->image->queryDmaBufModifiers == NULL)
2797       return EGL_FALSE;
2798
2799    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2800                                              max, modifiers,
2801                                              (unsigned int *) external_only,
2802                                              count) == false)
2803       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2804
2805    return EGL_TRUE;
2806 }
2807
2808 /**
2809  * The spec says:
2810  *
2811  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2812  *  EGL will take a reference to the dma_buf(s) which it will release at any
2813  *  time while the EGLDisplay is initialized. It is the responsibility of the
2814  *  application to close the dma_buf file descriptors."
2815  *
2816  * Therefore we must never close or otherwise modify the file descriptors.
2817  */
2818 _EGLImage *
2819 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2820                           EGLClientBuffer buffer, const EGLint *attr_list)
2821 {
2822    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2823    _EGLImage *res;
2824    _EGLImageAttribs attrs;
2825    __DRIimage *dri_image;
2826    unsigned num_fds;
2827    int fds[DMA_BUF_MAX_PLANES];
2828    int pitches[DMA_BUF_MAX_PLANES];
2829    int offsets[DMA_BUF_MAX_PLANES];
2830    uint64_t modifier;
2831    bool has_modifier = false;
2832    unsigned error;
2833
2834    /**
2835     * The spec says:
2836     *
2837     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2838     *     error EGL_BAD_PARAMETER is generated."
2839     */
2840    if (buffer != NULL) {
2841       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2842       return NULL;
2843    }
2844
2845    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2846       return NULL;
2847
2848    if (!dri2_check_dma_buf_attribs(&attrs))
2849       return NULL;
2850
2851    num_fds = dri2_check_dma_buf_format(&attrs);
2852    if (!num_fds)
2853       return NULL;
2854
2855    for (unsigned i = 0; i < num_fds; ++i) {
2856       fds[i] = attrs.DMABufPlaneFds[i].Value;
2857       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2858       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2859    }
2860
2861    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2862     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2863     * attrs.DMABufPlaneModifiersHi[0] */
2864    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2865       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2866                                       attrs.DMABufPlaneModifiersLo[0].Value);
2867       has_modifier = true;
2868    }
2869
2870    if (has_modifier) {
2871       if (dri2_dpy->image->base.version < 15 ||
2872           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2873          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2874          return EGL_NO_IMAGE_KHR;
2875       }
2876       dri_image =
2877          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2878             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2879             modifier, fds, num_fds, pitches, offsets,
2880             attrs.DMABufYuvColorSpaceHint.Value,
2881             attrs.DMABufSampleRangeHint.Value,
2882             attrs.DMABufChromaHorizontalSiting.Value,
2883             attrs.DMABufChromaVerticalSiting.Value,
2884             &error,
2885             NULL);
2886    }
2887    else {
2888       dri_image =
2889          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2890             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2891             fds, num_fds, pitches, offsets,
2892             attrs.DMABufYuvColorSpaceHint.Value,
2893             attrs.DMABufSampleRangeHint.Value,
2894             attrs.DMABufChromaHorizontalSiting.Value,
2895             attrs.DMABufChromaVerticalSiting.Value,
2896             &error,
2897             NULL);
2898    }
2899    dri2_create_image_khr_texture_error(error);
2900
2901    if (!dri_image)
2902       return EGL_NO_IMAGE_KHR;
2903
2904    res = dri2_create_image_from_dri(disp, dri_image);
2905
2906    return res;
2907 }
2908 static _EGLImage *
2909 dri2_create_drm_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp,
2910                            const EGLint *attr_list)
2911 {
2912    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2913    struct dri2_egl_image *dri2_img;
2914    _EGLImageAttribs attrs;
2915    unsigned int dri_use, valid_mask;
2916    int format;
2917
2918    (void) drv;
2919
2920    if (!attr_list) {
2921       _eglError(EGL_BAD_PARAMETER, __func__);
2922       return EGL_NO_IMAGE_KHR;
2923    }
2924
2925    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2926       return EGL_NO_IMAGE_KHR;
2927
2928    if (attrs.Width <= 0 || attrs.Height <= 0) {
2929       _eglError(EGL_BAD_PARAMETER, __func__);
2930       return EGL_NO_IMAGE_KHR;
2931    }
2932
2933    switch (attrs.DRMBufferFormatMESA) {
2934    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2935       format = __DRI_IMAGE_FORMAT_ARGB8888;
2936       break;
2937    default:
2938       _eglError(EGL_BAD_PARAMETER, __func__);
2939       return EGL_NO_IMAGE_KHR;
2940    }
2941
2942    valid_mask =
2943       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2944       EGL_DRM_BUFFER_USE_SHARE_MESA |
2945       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2946    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2947       _eglError(EGL_BAD_PARAMETER, __func__);
2948       return EGL_NO_IMAGE_KHR;
2949    }
2950
2951    dri_use = 0;
2952    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2953       dri_use |= __DRI_IMAGE_USE_SHARE;
2954    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2955       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2956    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2957       dri_use |= __DRI_IMAGE_USE_CURSOR;
2958
2959    dri2_img = malloc(sizeof *dri2_img);
2960    if (!dri2_img) {
2961       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2962       return EGL_NO_IMAGE_KHR;
2963    }
2964
2965    _eglInitImage(&dri2_img->base, disp);
2966
2967    dri2_img->dri_image =
2968       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2969                                    attrs.Width, attrs.Height,
2970                                    format, dri_use, dri2_img);
2971    if (dri2_img->dri_image == NULL) {
2972       free(dri2_img);
2973        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2974       return EGL_NO_IMAGE_KHR;
2975    }
2976
2977    return &dri2_img->base;
2978 }
2979
2980 static EGLBoolean
2981 dri2_export_drm_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2982                           EGLint *name, EGLint *handle, EGLint *stride)
2983 {
2984    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2985    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2986
2987    (void) drv;
2988
2989    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2990                                             __DRI_IMAGE_ATTRIB_NAME, name))
2991       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2992
2993    if (handle)
2994       dri2_dpy->image->queryImage(dri2_img->dri_image,
2995                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2996
2997    if (stride)
2998       dri2_dpy->image->queryImage(dri2_img->dri_image,
2999                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
3000
3001    return EGL_TRUE;
3002 }
3003
3004 /**
3005  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
3006
3007  * The spec provides a boolean return for the driver to reject exporting for
3008  * basically any reason, but doesn't specify any particular error cases.  For
3009  * now, we just fail if we don't have a DRM fourcc for the format.
3010  */
3011 static bool
3012 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
3013 {
3014    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3015    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3016    EGLint fourcc;
3017
3018    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
3019                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
3020       return false;
3021    }
3022
3023    return true;
3024 }
3025
3026 static EGLBoolean
3027 dri2_export_dma_buf_image_query_mesa(const _EGLDriver *drv, _EGLDisplay *disp,
3028                                      _EGLImage *img,
3029                                      EGLint *fourcc, EGLint *nplanes,
3030                                      EGLuint64KHR *modifiers)
3031 {
3032    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3033    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3034    int num_planes;
3035
3036    (void) drv;
3037
3038    if (!dri2_can_export_dma_buf_image(disp, img))
3039       return EGL_FALSE;
3040
3041    dri2_dpy->image->queryImage(dri2_img->dri_image,
3042                                __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
3043    if (nplanes)
3044      *nplanes = num_planes;
3045
3046    if (fourcc)
3047       dri2_dpy->image->queryImage(dri2_img->dri_image,
3048                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
3049
3050    if (modifiers) {
3051       int mod_hi, mod_lo;
3052       uint64_t modifier = DRM_FORMAT_MOD_INVALID;
3053       bool query;
3054
3055       query = dri2_dpy->image->queryImage(dri2_img->dri_image,
3056                                           __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
3057                                           &mod_hi);
3058       query &= dri2_dpy->image->queryImage(dri2_img->dri_image,
3059                                            __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
3060                                            &mod_lo);
3061       if (query)
3062          modifier = combine_u32_into_u64 (mod_hi, mod_lo);
3063
3064       for (int i = 0; i < num_planes; i++)
3065         modifiers[i] = modifier;
3066    }
3067
3068    return EGL_TRUE;
3069 }
3070
3071 static EGLBoolean
3072 dri2_export_dma_buf_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
3073                                int *fds, EGLint *strides, EGLint *offsets)
3074 {
3075    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3076    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3077    EGLint nplanes;
3078
3079    (void) drv;
3080
3081    if (!dri2_can_export_dma_buf_image(disp, img))
3082       return EGL_FALSE;
3083
3084    /* EGL_MESA_image_dma_buf_export spec says:
3085     *    "If the number of fds is less than the number of planes, then
3086     *    subsequent fd slots should contain -1."
3087     */
3088    if (fds) {
3089       /* Query nplanes so that we know how big the given array is. */
3090       dri2_dpy->image->queryImage(dri2_img->dri_image,
3091                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
3092       memset(fds, -1, nplanes * sizeof(int));
3093    }
3094
3095    /* rework later to provide multiple fds/strides/offsets */
3096    if (fds)
3097       dri2_dpy->image->queryImage(dri2_img->dri_image,
3098                                   __DRI_IMAGE_ATTRIB_FD, fds);
3099
3100    if (strides)
3101       dri2_dpy->image->queryImage(dri2_img->dri_image,
3102                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
3103
3104    if (offsets) {
3105       int img_offset;
3106       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
3107                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
3108       if (ret)
3109          offsets[0] = img_offset;
3110       else
3111          offsets[0] = 0;
3112    }
3113
3114    return EGL_TRUE;
3115 }
3116
3117 #endif
3118
3119 _EGLImage *
3120 dri2_create_image_khr(const _EGLDriver *drv, _EGLDisplay *disp,
3121                       _EGLContext *ctx, EGLenum target,
3122                       EGLClientBuffer buffer, const EGLint *attr_list)
3123 {
3124    (void) drv;
3125
3126    switch (target) {
3127    case EGL_GL_TEXTURE_2D_KHR:
3128    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
3129    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
3130    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
3131    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
3132    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
3133    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
3134    case EGL_GL_TEXTURE_3D_KHR:
3135       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
3136    case EGL_GL_RENDERBUFFER_KHR:
3137       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
3138 #ifdef HAVE_LIBDRM
3139    case EGL_DRM_BUFFER_MESA:
3140       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
3141    case EGL_LINUX_DMA_BUF_EXT:
3142       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
3143 #endif
3144 #ifdef HAVE_WAYLAND_PLATFORM
3145    case EGL_WAYLAND_BUFFER_WL:
3146       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
3147 #endif
3148    default:
3149       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
3150       return EGL_NO_IMAGE_KHR;
3151    }
3152 }
3153
3154 static EGLBoolean
3155 dri2_destroy_image_khr(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
3156 {
3157    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3158    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
3159
3160    (void) drv;
3161
3162    dri2_dpy->image->destroyImage(dri2_img->dri_image);
3163    free(dri2_img);
3164
3165    return EGL_TRUE;
3166 }
3167
3168 #ifdef HAVE_WAYLAND_PLATFORM
3169
3170 static void
3171 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
3172                          struct wl_drm_buffer *buffer)
3173 {
3174    _EGLDisplay *disp = user_data;
3175    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3176    __DRIimage *img;
3177    int dri_components = 0;
3178
3179    if (fd == -1)
3180       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
3181                                                   buffer->width,
3182                                                   buffer->height,
3183                                                   buffer->format,
3184                                                   (int*)&name, 1,
3185                                                   buffer->stride,
3186                                                   buffer->offset,
3187                                                   NULL);
3188    else
3189       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
3190                                                 buffer->width,
3191                                                 buffer->height,
3192                                                 buffer->format,
3193                                                 &fd, 1,
3194                                                 buffer->stride,
3195                                                 buffer->offset,
3196                                                 NULL);
3197
3198    if (img == NULL)
3199       return;
3200
3201    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
3202
3203    buffer->driver_format = NULL;
3204    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
3205       if (wl_drm_components[i].dri_components == dri_components)
3206          buffer->driver_format = &wl_drm_components[i];
3207
3208    if (buffer->driver_format == NULL)
3209       dri2_dpy->image->destroyImage(img);
3210    else
3211       buffer->driver_buffer = img;
3212 }
3213
3214 static void
3215 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
3216 {
3217    _EGLDisplay *disp = user_data;
3218    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3219
3220    dri2_dpy->image->destroyImage(buffer->driver_buffer);
3221 }
3222
3223 static EGLBoolean
3224 dri2_bind_wayland_display_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3225                              struct wl_display *wl_dpy)
3226 {
3227    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3228    const struct wayland_drm_callbacks wl_drm_callbacks = {
3229       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
3230       .reference_buffer = dri2_wl_reference_buffer,
3231       .release_buffer = dri2_wl_release_buffer,
3232       .is_format_supported = dri2_wl_is_format_supported
3233    };
3234    int flags = 0;
3235    uint64_t cap;
3236
3237    (void) drv;
3238
3239    if (dri2_dpy->wl_server_drm)
3240            return EGL_FALSE;
3241
3242    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
3243        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
3244        dri2_dpy->image->base.version >= 7 &&
3245        dri2_dpy->image->createImageFromFds != NULL)
3246       flags |= WAYLAND_DRM_PRIME;
3247
3248    dri2_dpy->wl_server_drm =
3249            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
3250                             &wl_drm_callbacks, disp, flags);
3251
3252    if (!dri2_dpy->wl_server_drm)
3253            return EGL_FALSE;
3254
3255 #ifdef HAVE_DRM_PLATFORM
3256    /* We have to share the wl_drm instance with gbm, so gbm can convert
3257     * wl_buffers to gbm bos. */
3258    if (dri2_dpy->gbm_dri)
3259       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
3260 #endif
3261
3262    return EGL_TRUE;
3263 }
3264
3265 static EGLBoolean
3266 dri2_unbind_wayland_display_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3267                                struct wl_display *wl_dpy)
3268 {
3269    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3270
3271    (void) drv;
3272
3273    if (!dri2_dpy->wl_server_drm)
3274            return EGL_FALSE;
3275
3276    wayland_drm_uninit(dri2_dpy->wl_server_drm);
3277    dri2_dpy->wl_server_drm = NULL;
3278
3279    return EGL_TRUE;
3280 }
3281
3282 static EGLBoolean
3283 dri2_query_wayland_buffer_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3284                              struct wl_resource *buffer_resource,
3285                              EGLint attribute, EGLint *value)
3286 {
3287    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3288    struct wl_drm_buffer *buffer;
3289    const struct wl_drm_components_descriptor *format;
3290
3291    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
3292    if (!buffer)
3293       return EGL_FALSE;
3294
3295    format = buffer->driver_format;
3296    switch (attribute) {
3297    case EGL_TEXTURE_FORMAT:
3298       *value = format->components;
3299       return EGL_TRUE;
3300    case EGL_WIDTH:
3301       *value = buffer->width;
3302       return EGL_TRUE;
3303    case EGL_HEIGHT:
3304       *value = buffer->height;
3305       return EGL_TRUE;
3306    }
3307
3308    return EGL_FALSE;
3309 }
3310 #endif
3311
3312 static void
3313 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
3314 {
3315    p_atomic_inc(&sync->refcount);
3316 }
3317
3318 static void
3319 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
3320                     struct dri2_egl_sync *dri2_sync)
3321 {
3322    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
3323       switch (dri2_sync->base.Type) {
3324       case EGL_SYNC_REUSABLE_KHR:
3325          cnd_destroy(&dri2_sync->cond);
3326          break;
3327       case EGL_SYNC_NATIVE_FENCE_ANDROID:
3328          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
3329             close(dri2_sync->base.SyncFd);
3330          break;
3331       default:
3332          break;
3333       }
3334
3335       if (dri2_sync->fence)
3336          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
3337
3338       free(dri2_sync);
3339    }
3340 }
3341
3342 static _EGLSync *
3343 dri2_create_sync(const _EGLDriver *drv, _EGLDisplay *disp,
3344                  EGLenum type, const EGLAttrib *attrib_list)
3345 {
3346    _EGLContext *ctx = _eglGetCurrentContext();
3347    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3348    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3349    struct dri2_egl_sync *dri2_sync;
3350    EGLint ret;
3351    pthread_condattr_t attr;
3352
3353    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
3354    if (!dri2_sync) {
3355       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3356       return NULL;
3357    }
3358
3359    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
3360       free(dri2_sync);
3361       return NULL;
3362    }
3363
3364    switch (type) {
3365    case EGL_SYNC_FENCE_KHR:
3366       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
3367       if (!dri2_sync->fence) {
3368          /* Why did it fail? DRI doesn't return an error code, so we emit
3369           * a generic EGL error that doesn't communicate user error.
3370           */
3371          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3372          free(dri2_sync);
3373          return NULL;
3374       }
3375       break;
3376
3377    case EGL_SYNC_CL_EVENT_KHR:
3378       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
3379                                  dri2_dpy->dri_screen,
3380                                  dri2_sync->base.CLEvent);
3381       /* this can only happen if the cl_event passed in is invalid. */
3382       if (!dri2_sync->fence) {
3383          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3384          free(dri2_sync);
3385          return NULL;
3386       }
3387
3388       /* the initial status must be "signaled" if the cl_event is signaled */
3389       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
3390                                             dri2_sync->fence, 0, 0))
3391          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3392       break;
3393
3394    case EGL_SYNC_REUSABLE_KHR:
3395       /* intialize attr */
3396       ret = pthread_condattr_init(&attr);
3397
3398       if (ret) {
3399          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3400          free(dri2_sync);
3401          return NULL;
3402       }
3403
3404       /* change clock attribute to CLOCK_MONOTONIC */
3405       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
3406
3407       if (ret) {
3408          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3409          free(dri2_sync);
3410          return NULL;
3411       }
3412
3413       ret = pthread_cond_init(&dri2_sync->cond, &attr);
3414
3415       if (ret) {
3416          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3417          free(dri2_sync);
3418          return NULL;
3419       }
3420
3421       /* initial status of reusable sync must be "unsignaled" */
3422       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3423       break;
3424
3425    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3426       if (dri2_dpy->fence->create_fence_fd) {
3427          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3428                                     dri2_ctx->dri_context,
3429                                     dri2_sync->base.SyncFd);
3430       }
3431       if (!dri2_sync->fence) {
3432          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3433          free(dri2_sync);
3434          return NULL;
3435       }
3436       break;
3437    }
3438
3439    p_atomic_set(&dri2_sync->refcount, 1);
3440    return &dri2_sync->base;
3441 }
3442
3443 static EGLBoolean
3444 dri2_destroy_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3445 {
3446    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3447    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3448    EGLint ret = EGL_TRUE;
3449    EGLint err;
3450
3451    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3452     * then unlock all threads possibly blocked by the reusable sync before
3453     * destroying it.
3454     */
3455    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3456        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3457       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3458       /* unblock all threads currently blocked by sync */
3459       err = cnd_broadcast(&dri2_sync->cond);
3460
3461       if (err) {
3462          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3463          ret = EGL_FALSE;
3464       }
3465    }
3466
3467    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3468
3469    return ret;
3470 }
3471
3472 static EGLint
3473 dri2_dup_native_fence_fd(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3474 {
3475    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3476    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3477
3478    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3479
3480    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3481       /* try to retrieve the actual native fence fd.. if rendering is
3482        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3483        */
3484       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3485                                                    dri2_sync->fence);
3486    }
3487
3488    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3489       /* if native fence fd still not created, return an error: */
3490       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3491       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3492    }
3493
3494    return os_dupfd_cloexec(sync->SyncFd);
3495 }
3496
3497 static void
3498 dri2_set_blob_cache_funcs(const _EGLDriver *drv, _EGLDisplay *disp,
3499                           EGLSetBlobFuncANDROID set,
3500                           EGLGetBlobFuncANDROID get)
3501 {
3502    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3503    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3504                                    disp->BlobCacheSet,
3505                                    disp->BlobCacheGet);
3506 }
3507
3508 static EGLint
3509 dri2_client_wait_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3510                       EGLint flags, EGLTime timeout)
3511 {
3512    _EGLContext *ctx = _eglGetCurrentContext();
3513    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3514    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3515    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3516    unsigned wait_flags = 0;
3517
3518    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3519
3520    /* The EGL_KHR_fence_sync spec states:
3521     *
3522     *    "If no context is current for the bound API,
3523     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3524     */
3525    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3526       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3527
3528    /* the sync object should take a reference while waiting */
3529    dri2_egl_ref_sync(dri2_sync);
3530
3531    switch (sync->Type) {
3532    case EGL_SYNC_FENCE_KHR:
3533    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3534    case EGL_SYNC_CL_EVENT_KHR:
3535       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3536                                          dri2_sync->fence, wait_flags,
3537                                          timeout))
3538          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3539       else
3540          ret = EGL_TIMEOUT_EXPIRED_KHR;
3541       break;
3542
3543    case EGL_SYNC_REUSABLE_KHR:
3544       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3545           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3546          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3547          dri2_gl_flush();
3548       }
3549
3550       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3551       if (timeout == EGL_FOREVER_KHR) {
3552          mtx_lock(&dri2_sync->mutex);
3553          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3554          mtx_unlock(&dri2_sync->mutex);
3555       } else {
3556          /* if reusable sync has not been yet signaled */
3557          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3558             /* timespecs for cnd_timedwait */
3559             struct timespec current;
3560             struct timespec expire;
3561
3562             /* We override the clock to monotonic when creating the condition
3563              * variable. */
3564             clock_gettime(CLOCK_MONOTONIC, &current);
3565
3566             /* calculating when to expire */
3567             expire.tv_nsec = timeout % 1000000000L;
3568             expire.tv_sec = timeout / 1000000000L;
3569
3570             expire.tv_nsec += current.tv_nsec;
3571             expire.tv_sec += current.tv_sec;
3572
3573             /* expire.nsec now is a number between 0 and 1999999998 */
3574             if (expire.tv_nsec > 999999999L) {
3575                expire.tv_sec++;
3576                expire.tv_nsec -= 1000000000L;
3577             }
3578
3579             mtx_lock(&dri2_sync->mutex);
3580             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3581             mtx_unlock(&dri2_sync->mutex);
3582
3583             if (ret == thrd_busy) {
3584                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3585                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3586                } else {
3587                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3588                   ret = EGL_FALSE;
3589                }
3590             }
3591          }
3592       }
3593       break;
3594   }
3595   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3596
3597   return ret;
3598 }
3599
3600 static EGLBoolean
3601 dri2_signal_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3602                       EGLenum mode)
3603 {
3604    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3605    EGLint ret;
3606
3607    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3608       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3609
3610    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3611       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3612
3613    dri2_sync->base.SyncStatus = mode;
3614
3615    if (mode == EGL_SIGNALED_KHR) {
3616       ret = cnd_broadcast(&dri2_sync->cond);
3617
3618       /* fail to broadcast */
3619       if (ret)
3620          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3621    }
3622
3623    return EGL_TRUE;
3624 }
3625
3626 static EGLint
3627 dri2_server_wait_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3628 {
3629    _EGLContext *ctx = _eglGetCurrentContext();
3630    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3631    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3632    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3633
3634    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3635                                      dri2_sync->fence, 0);
3636    return EGL_TRUE;
3637 }
3638
3639 static int
3640 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3641                                struct mesa_glinterop_device_info *out)
3642 {
3643    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3644    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3645
3646    if (!dri2_dpy->interop)
3647       return MESA_GLINTEROP_UNSUPPORTED;
3648
3649    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3650 }
3651
3652 static int
3653 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3654                            struct mesa_glinterop_export_in *in,
3655                            struct mesa_glinterop_export_out *out)
3656 {
3657    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3658    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3659
3660    if (!dri2_dpy->interop)
3661       return MESA_GLINTEROP_UNSUPPORTED;
3662
3663    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3664 }
3665
3666 const _EGLDriver _eglDriver = {
3667    .Initialize = dri2_initialize,
3668    .Terminate = dri2_terminate,
3669    .CreateContext = dri2_create_context,
3670    .DestroyContext = dri2_destroy_context,
3671    .MakeCurrent = dri2_make_current,
3672    .CreateWindowSurface = dri2_create_window_surface,
3673    .CreatePixmapSurface = dri2_create_pixmap_surface,
3674    .CreatePbufferSurface = dri2_create_pbuffer_surface,
3675    .DestroySurface = dri2_destroy_surface,
3676    .GetProcAddress = dri2_get_proc_address,
3677    .WaitClient = dri2_wait_client,
3678    .WaitNative = dri2_wait_native,
3679    .BindTexImage = dri2_bind_tex_image,
3680    .ReleaseTexImage = dri2_release_tex_image,
3681    .SwapInterval = dri2_swap_interval,
3682    .SwapBuffers = dri2_swap_buffers,
3683    .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
3684    .SwapBuffersRegionNOK = dri2_swap_buffers_region,
3685    .SetDamageRegion = dri2_set_damage_region,
3686    .PostSubBufferNV = dri2_post_sub_buffer,
3687    .CopyBuffers = dri2_copy_buffers,
3688    .QueryBufferAge = dri2_query_buffer_age,
3689    .CreateImageKHR = dri2_create_image,
3690    .DestroyImageKHR = dri2_destroy_image_khr,
3691    .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
3692    .QuerySurface = dri2_query_surface,
3693    .QueryDriverName = dri2_query_driver_name,
3694    .QueryDriverConfig = dri2_query_driver_config,
3695 #ifdef HAVE_LIBDRM
3696    .CreateDRMImageMESA = dri2_create_drm_image_mesa,
3697    .ExportDRMImageMESA = dri2_export_drm_image_mesa,
3698    .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
3699    .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
3700    .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
3701    .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
3702 #endif
3703 #ifdef HAVE_WAYLAND_PLATFORM
3704    .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
3705    .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
3706    .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
3707 #endif
3708    .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
3709    .CreateSyncKHR = dri2_create_sync,
3710    .ClientWaitSyncKHR = dri2_client_wait_sync,
3711    .SignalSyncKHR = dri2_signal_sync,
3712    .WaitSyncKHR = dri2_server_wait_sync,
3713    .DestroySyncKHR = dri2_destroy_sync,
3714    .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
3715    .GLInteropExportObject = dri2_interop_export_object,
3716    .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
3717    .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
3718 };