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_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-drm.h"
  52 #include "wayland-drm-client-protocol.h"
  53 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  54 #endif
  55
  56 #ifdef HAVE_X11_PLATFORM
  57 #include "X11/Xlibint.h"
  58 #endif
  59
  60 #include "egl_dri2.h"
  61 #include "GL/mesa_glinterop.h"
  62 #include "loader/loader.h"
  63 #include "util/u_atomic.h"
  64 #include "util/u_vector.h"
  65 #include "mapi/glapi/glapi.h"
  66
  67 /* The kernel header drm_fourcc.h defines the DRM formats below.  We duplicate
  68  * some of the definitions here so that building Mesa won't bleeding-edge
  69  * kernel headers.
  70  */
  71 #ifndef DRM_FORMAT_R8
  72 #define DRM_FORMAT_R8            fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
  73 #endif
  74
  75 #ifndef DRM_FORMAT_RG88
  76 #define DRM_FORMAT_RG88          fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
  77 #endif
  78
  79 #ifndef DRM_FORMAT_GR88
  80 #define DRM_FORMAT_GR88          fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
  81 #endif
  82
  83 #ifndef DRM_FORMAT_R16
  84 #define DRM_FORMAT_R16           fourcc_code('R', '1', '6', ' ') /* [15:0] R 16 little endian */
  85 #endif
  86
  87 #ifndef DRM_FORMAT_GR1616
  88 #define DRM_FORMAT_GR1616        fourcc_code('G', 'R', '3', '2') /* [31:0] R:G 16:16 little endian */
  89 #endif
  90
  91 #ifndef DRM_FORMAT_MOD_INVALID
  92 #define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
  93 #endif
  94
  95 #define NUM_ATTRIBS 12
  96
  97 static void
  98 dri_set_background_context(void *loaderPrivate)
  99 {
 100    _EGLContext *ctx = _eglGetCurrentContext();
 101    _EGLThreadInfo *t = _eglGetCurrentThread();
 102
 103    _eglBindContextToThread(ctx, t);
 104 }
 105
 106 static void
 107 dri2_gl_flush()
 108 {
 109    static void (*glFlush)(void);
 110    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 111
 112    mtx_lock(&glFlushMutex);
 113    if (!glFlush)
 114       glFlush = _glapi_get_proc_address("glFlush");
 115    mtx_unlock(&glFlushMutex);
 116
 117    /* if glFlush is not available things are horribly broken */
 118    if (!glFlush) {
 119       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 120       return;
 121    }
 122
 123    glFlush();
 124 }
 125
 126 static GLboolean
 127 dri_is_thread_safe(void *loaderPrivate)
 128 {
 129    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 130    _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 131
 132 #ifdef HAVE_X11_PLATFORM
 133    Display *xdpy = (Display*)display->PlatformDisplay;
 134
 135    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 136     * platform
 137     *
 138     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 139     * It wll be NULL if XInitThreads wasn't called.
 140     */
 141    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 142       return false;
 143 #endif
 144
 145 #ifdef HAVE_WAYLAND_PLATFORM
 146    if (display->Platform == _EGL_PLATFORM_WAYLAND)
 147       return true;
 148 #endif
 149
 150    return true;
 151 }
 152
 153 const __DRIbackgroundCallableExtension background_callable_extension = {
 154    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 155
 156    .setBackgroundContext = dri_set_background_context,
 157    .isThreadSafe         = dri_is_thread_safe,
 158 };
 159
 160 const __DRIuseInvalidateExtension use_invalidate = {
 161    .base = { __DRI_USE_INVALIDATE, 1 }
 162 };
 163
 164 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 165    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 166    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 167    [__DRI_ATTRIB_RED_SIZE]              = EGL_RED_SIZE,
 168    [__DRI_ATTRIB_GREEN_SIZE]            = EGL_GREEN_SIZE,
 169    [__DRI_ATTRIB_BLUE_SIZE]             = EGL_BLUE_SIZE,
 170    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 171    [__DRI_ATTRIB_ALPHA_SIZE]            = EGL_ALPHA_SIZE,
 172    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 173    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 174    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 175    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 176    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 177    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 178    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 179    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 180    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 181    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 182 };
 183
 184 const __DRIconfig *
 185 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 186                     EGLenum colorspace)
 187 {
 188    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 189    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 190
 191    return conf->dri_config[double_buffer][srgb];
 192 }
 193
 194 static EGLBoolean
 195 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 196 {
 197    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 198       return EGL_FALSE;
 199
 200    if (!_eglMatchConfig(conf, criteria))
 201       return EGL_FALSE;
 202
 203    return EGL_TRUE;
 204 }
 205
 206 struct dri2_egl_config *
 207 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 208                 EGLint surface_type, const EGLint *attr_list,
 209                 const unsigned int *rgba_masks)
 210 {
 211    struct dri2_egl_config *conf;
 212    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 213    _EGLConfig base;
 214    unsigned int attrib, value, double_buffer;
 215    bool srgb = false;
 216    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 217    unsigned int dri_masks[4] = { 0, 0, 0, 0 };
 218    _EGLConfig *matching_config;
 219    EGLint num_configs = 0;
 220    EGLint config_id;
 221
 222    _eglInitConfig(&base, disp, id);
 223
 224    double_buffer = 0;
 225    bind_to_texture_rgb = 0;
 226    bind_to_texture_rgba = 0;
 227
 228    for (int i = 0; dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib,
 229                                                      &value); ++i) {
 230       switch (attrib) {
 231       case __DRI_ATTRIB_RENDER_TYPE:
 232          if (value & __DRI_ATTRIB_RGBA_BIT)
 233             value = EGL_RGB_BUFFER;
 234          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 235             value = EGL_LUMINANCE_BUFFER;
 236          else
 237             return NULL;
 238          _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
 239          break;
 240
 241       case __DRI_ATTRIB_CONFIG_CAVEAT:
 242          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 243             value = EGL_NON_CONFORMANT_CONFIG;
 244          else if (value & __DRI_ATTRIB_SLOW_BIT)
 245             value = EGL_SLOW_CONFIG;
 246          else
 247             value = EGL_NONE;
 248          _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
 249          break;
 250
 251       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 252          bind_to_texture_rgb = value;
 253          break;
 254
 255       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 256          bind_to_texture_rgba = value;
 257          break;
 258
 259       case __DRI_ATTRIB_DOUBLE_BUFFER:
 260          double_buffer = value;
 261          break;
 262
 263       case __DRI_ATTRIB_RED_MASK:
 264          dri_masks[0] = value;
 265          break;
 266
 267       case __DRI_ATTRIB_GREEN_MASK:
 268          dri_masks[1] = value;
 269          break;
 270
 271       case __DRI_ATTRIB_BLUE_MASK:
 272          dri_masks[2] = value;
 273          break;
 274
 275       case __DRI_ATTRIB_ALPHA_MASK:
 276          dri_masks[3] = value;
 277          break;
 278
 279       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 280       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 281       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 282       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 283          /* Don't expose visuals with the accumulation buffer. */
 284          if (value > 0)
 285             return NULL;
 286          break;
 287
 288       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 289          srgb = value != 0;
 290          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 291             return NULL;
 292          break;
 293
 294       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 295          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_WIDTH,
 296                           _EGL_MAX_PBUFFER_WIDTH);
 297          break;
 298       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 299          _eglSetConfigKey(&base, EGL_MAX_PBUFFER_HEIGHT,
 300                           _EGL_MAX_PBUFFER_HEIGHT);
 301          break;
 302
 303       default:
 304          key = dri2_to_egl_attribute_map[attrib];
 305          if (key != 0)
 306             _eglSetConfigKey(&base, key, value);
 307          break;
 308       }
 309    }
 310
 311    if (attr_list)
 312       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 313          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 314
 315    if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
 316       return NULL;
 317
 318    base.NativeRenderable = EGL_TRUE;
 319
 320    base.SurfaceType = surface_type;
 321    if (surface_type & (EGL_PBUFFER_BIT |
 322        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 323       base.BindToTextureRGB = bind_to_texture_rgb;
 324       if (base.AlphaSize > 0)
 325          base.BindToTextureRGBA = bind_to_texture_rgba;
 326    }
 327
 328    base.RenderableType = disp->ClientAPIs;
 329    base.Conformant = disp->ClientAPIs;
 330
 331    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 332    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 333
 334    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 335       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 336       return NULL;
 337    }
 338
 339    config_id = base.ConfigID;
 340    base.ConfigID    = EGL_DONT_CARE;
 341    base.SurfaceType = EGL_DONT_CARE;
 342    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 343                                  (_EGLArrayForEach) dri2_match_config, &base);
 344
 345    if (num_configs == 1) {
 346       conf = (struct dri2_egl_config *) matching_config;
 347
 348       if (!conf->dri_config[double_buffer][srgb])
 349          conf->dri_config[double_buffer][srgb] = dri_config;
 350       else
 351          /* a similar config type is already added (unlikely) => discard */
 352          return NULL;
 353    }
 354    else if (num_configs == 0) {
 355       conf = calloc(1, sizeof *conf);
 356       if (conf == NULL)
 357          return NULL;
 358
 359       conf->dri_config[double_buffer][srgb] = dri_config;
 360
 361       memcpy(&conf->base, &base, sizeof base);
 362       conf->base.SurfaceType = 0;
 363       conf->base.ConfigID = config_id;
 364
 365       _eglLinkConfig(&conf->base);
 366    }
 367    else {
 368       assert(0);
 369       return NULL;
 370    }
 371
 372    if (double_buffer) {
 373       surface_type &= ~EGL_PIXMAP_BIT;
 374    }
 375
 376    /* No support for pbuffer + MSAA for now.
 377     *
 378     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 379     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 380     */
 381    if (base.Samples) {
 382       surface_type &= ~EGL_PBUFFER_BIT;
 383    }
 384
 385    conf->base.SurfaceType |= surface_type;
 386
 387    return conf;
 388 }
 389
 390 __DRIimage *
 391 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 392 {
 393    _EGLDisplay *disp = data;
 394    struct dri2_egl_image *dri2_img;
 395    _EGLImage *img;
 396
 397    (void) screen;
 398
 399    img = _eglLookupImage(image, disp);
 400    if (img == NULL) {
 401       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 402       return NULL;
 403    }
 404
 405    dri2_img = dri2_egl_image(image);
 406
 407    return dri2_img->dri_image;
 408 }
 409
 410 const __DRIimageLookupExtension image_lookup_extension = {
 411    .base = { __DRI_IMAGE_LOOKUP, 1 },
 412
 413    .lookupEGLImage       = dri2_lookup_egl_image
 414 };
 415
 416 struct dri2_extension_match {
 417    const char *name;
 418    int version;
 419    int offset;
 420 };
 421
 422 static const struct dri2_extension_match dri3_driver_extensions[] = {
 423    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 424    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 425    { NULL, 0, 0 }
 426 };
 427
 428 static const struct dri2_extension_match dri2_driver_extensions[] = {
 429    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 430    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 431    { NULL, 0, 0 }
 432 };
 433
 434 static const struct dri2_extension_match dri2_core_extensions[] = {
 435    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 436    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 437    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 438    { NULL, 0, 0 }
 439 };
 440
 441 static const struct dri2_extension_match swrast_driver_extensions[] = {
 442    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 443    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 444    { NULL, 0, 0 }
 445 };
 446
 447 static const struct dri2_extension_match swrast_core_extensions[] = {
 448    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 449    { NULL, 0, 0 }
 450 };
 451
 452 static const struct dri2_extension_match optional_core_extensions[] = {
 453    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 454    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 455    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 456    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 457    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 458    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 459    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 460    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 461    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 462    { NULL, 0, 0 }
 463 };
 464
 465 static EGLBoolean
 466 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 467                      const struct dri2_extension_match *matches,
 468                      const __DRIextension **extensions,
 469                      bool optional)
 470 {
 471    int ret = EGL_TRUE;
 472    void *field;
 473
 474    for (int i = 0; extensions[i]; i++) {
 475       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 476       for (int j = 0; matches[j].name; j++) {
 477          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 478              extensions[i]->version >= matches[j].version) {
 479             field = ((char *) dri2_dpy + matches[j].offset);
 480             *(const __DRIextension **) field = extensions[i];
 481             _eglLog(_EGL_INFO, "found extension %s version %d",
 482                     extensions[i]->name, extensions[i]->version);
 483             break;
 484          }
 485       }
 486    }
 487
 488    for (int j = 0; matches[j].name; j++) {
 489       field = ((char *) dri2_dpy + matches[j].offset);
 490       if (*(const __DRIextension **) field == NULL) {
 491          if (optional) {
 492             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 493                     matches[j].name, matches[j].version);
 494          } else {
 495             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 496                     matches[j].name, matches[j].version);
 497             ret = EGL_FALSE;
 498          }
 499       }
 500    }
 501
 502    return ret;
 503 }
 504
 505 static const __DRIextension **
 506 dri2_open_driver(_EGLDisplay *disp)
 507 {
 508    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 509    const __DRIextension **extensions = NULL;
 510    char path[PATH_MAX], *search_paths, *next, *end;
 511    char *get_extensions_name;
 512    const __DRIextension **(*get_extensions)(void);
 513
 514    search_paths = NULL;
 515    if (geteuid() == getuid()) {
 516       /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
 517       search_paths = getenv("LIBGL_DRIVERS_PATH");
 518    }
 519    if (search_paths == NULL)
 520       search_paths = DEFAULT_DRIVER_DIR;
 521
 522    dri2_dpy->driver = NULL;
 523    end = search_paths + strlen(search_paths);
 524    for (char *p = search_paths; p < end; p = next + 1) {
 525       int len;
 526       next = strchr(p, ':');
 527       if (next == NULL)
 528          next = end;
 529
 530       len = next - p;
 531 #if GLX_USE_TLS
 532       snprintf(path, sizeof path,
 533                "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
 534       dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 535 #endif
 536       if (dri2_dpy->driver == NULL) {
 537          snprintf(path, sizeof path,
 538                   "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
 539          dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 540          if (dri2_dpy->driver == NULL)
 541             _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
 542       }
 543       /* not need continue to loop all paths once the driver is found */
 544       if (dri2_dpy->driver != NULL)
 545          break;
 546    }
 547
 548    if (dri2_dpy->driver == NULL) {
 549       _eglLog(_EGL_WARNING,
 550               "DRI2: failed to open %s (search paths %s)",
 551               dri2_dpy->driver_name, search_paths);
 552       return NULL;
 553    }
 554
 555    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
 556
 557    get_extensions_name = loader_get_extensions_name(dri2_dpy->driver_name);
 558    if (get_extensions_name) {
 559       get_extensions = dlsym(dri2_dpy->driver, get_extensions_name);
 560       if (get_extensions) {
 561          extensions = get_extensions();
 562       } else {
 563          _eglLog(_EGL_DEBUG, "driver does not expose %s(): %s\n",
 564                  get_extensions_name, dlerror());
 565       }
 566       free(get_extensions_name);
 567    }
 568
 569    if (!extensions)
 570       extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
 571    if (extensions == NULL) {
 572       _eglLog(_EGL_WARNING,
 573               "DRI2: driver exports no extensions (%s)", dlerror());
 574       dlclose(dri2_dpy->driver);
 575    }
 576
 577    return extensions;
 578 }
 579
 580 EGLBoolean
 581 dri2_load_driver_dri3(_EGLDisplay *disp)
 582 {
 583    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 584    const __DRIextension **extensions;
 585
 586    extensions = dri2_open_driver(disp);
 587    if (!extensions)
 588       return EGL_FALSE;
 589
 590    if (!dri2_bind_extensions(dri2_dpy, dri3_driver_extensions, extensions, false)) {
 591       dlclose(dri2_dpy->driver);
 592       return EGL_FALSE;
 593    }
 594    dri2_dpy->driver_extensions = extensions;
 595
 596    return EGL_TRUE;
 597 }
 598
 599 EGLBoolean
 600 dri2_load_driver(_EGLDisplay *disp)
 601 {
 602    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 603    const __DRIextension **extensions;
 604
 605    extensions = dri2_open_driver(disp);
 606    if (!extensions)
 607       return EGL_FALSE;
 608
 609    if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions, false)) {
 610       dlclose(dri2_dpy->driver);
 611       return EGL_FALSE;
 612    }
 613    dri2_dpy->driver_extensions = extensions;
 614
 615    return EGL_TRUE;
 616 }
 617
 618 EGLBoolean
 619 dri2_load_driver_swrast(_EGLDisplay *disp)
 620 {
 621    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 622    const __DRIextension **extensions;
 623
 624    extensions = dri2_open_driver(disp);
 625    if (!extensions)
 626       return EGL_FALSE;
 627
 628    if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions, false)) {
 629       dlclose(dri2_dpy->driver);
 630       return EGL_FALSE;
 631    }
 632    dri2_dpy->driver_extensions = extensions;
 633
 634    return EGL_TRUE;
 635 }
 636
 637 static unsigned
 638 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 639 {
 640    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 641    unsigned int value = 0;
 642
 643    if (!rendererQuery ||
 644        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 645       return 0;
 646
 647    return value;
 648 }
 649
 650 void
 651 dri2_setup_screen(_EGLDisplay *disp)
 652 {
 653    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 654    unsigned int api_mask;
 655
 656    /*
 657     * EGL 1.5 specification defines the default value to 1. Moreover,
 658     * eglSwapInterval() is required to clamp requested value to the supported
 659     * range. Since the default value is implicitly assumed to be supported,
 660     * use it as both minimum and maximum for the platforms that do not allow
 661     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 662     * override these values already.
 663     */
 664    dri2_dpy->min_swap_interval = 1;
 665    dri2_dpy->max_swap_interval = 1;
 666    dri2_dpy->default_swap_interval = 1;
 667
 668    if (dri2_dpy->image_driver) {
 669       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 670    } else if (dri2_dpy->dri2) {
 671       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 672    } else {
 673       assert(dri2_dpy->swrast);
 674       api_mask = 1 << __DRI_API_OPENGL |
 675                  1 << __DRI_API_GLES |
 676                  1 << __DRI_API_GLES2 |
 677                  1 << __DRI_API_GLES3;
 678    }
 679
 680    disp->ClientAPIs = 0;
 681    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 682       disp->ClientAPIs |= EGL_OPENGL_BIT;
 683    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 684       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 685    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 686       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 687    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 688       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 689
 690    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 691    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 692    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 693
 694    /* Report back to EGL the bitmask of priorities supported */
 695    disp->Extensions.IMG_context_priority =
 696       dri2_renderer_query_integer(dri2_dpy,
 697                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 698
 699    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 700
 701    if (dri2_renderer_query_integer(dri2_dpy,
 702                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 703       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 704
 705    if (dri2_dpy->image_driver ||
 706        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 707        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 708       disp->Extensions.KHR_create_context = EGL_TRUE;
 709
 710       if (dri2_dpy->robustness)
 711          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 712    }
 713
 714    if (dri2_dpy->no_error)
 715       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 716
 717    if (dri2_dpy->fence) {
 718       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 719       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 720       if (dri2_dpy->fence->get_fence_from_cl_event)
 721          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 722       if (dri2_dpy->fence->base.version >= 2 &&
 723           dri2_dpy->fence->get_capabilities) {
 724          unsigned capabilities =
 725             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 726          disp->Extensions.ANDROID_native_fence_sync =
 727             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 728       }
 729    }
 730
 731    if (dri2_dpy->blob)
 732       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 733
 734    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 735
 736    if (dri2_dpy->image) {
 737       if (dri2_dpy->image->base.version >= 10 &&
 738           dri2_dpy->image->getCapabilities != NULL) {
 739          int capabilities;
 740
 741          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 742          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 743
 744          if (dri2_dpy->image->base.version >= 11)
 745             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 746       } else {
 747          disp->Extensions.MESA_drm_image = EGL_TRUE;
 748          if (dri2_dpy->image->base.version >= 11)
 749             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 750       }
 751
 752       disp->Extensions.KHR_image_base = EGL_TRUE;
 753       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 754       if (dri2_dpy->image->base.version >= 5 &&
 755           dri2_dpy->image->createImageFromTexture) {
 756          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 757          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 758
 759          if (dri2_renderer_query_integer(dri2_dpy,
 760                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 761              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 762       }
 763 #ifdef HAVE_LIBDRM
 764       if (dri2_dpy->image->base.version >= 8 &&
 765           dri2_dpy->image->createImageFromDmaBufs) {
 766          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 767       }
 768       if (dri2_dpy->image->base.version >= 15 &&
 769           dri2_dpy->image->createImageFromDmaBufs2 &&
 770           dri2_dpy->image->queryDmaBufFormats &&
 771           dri2_dpy->image->queryDmaBufModifiers) {
 772          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 773       }
 774 #endif
 775    }
 776
 777    if (dri2_dpy->flush_control)
 778       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 779 }
 780
 781 void
 782 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
 783 {
 784    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 785    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 786
 787    /* Allow driconf to override applications.*/
 788    if (dri2_dpy->config)
 789       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
 790                                      "vblank_mode", &vblank_mode);
 791    switch (vblank_mode) {
 792    case DRI_CONF_VBLANK_NEVER:
 793       dri2_dpy->min_swap_interval = 0;
 794       dri2_dpy->max_swap_interval = 0;
 795       dri2_dpy->default_swap_interval = 0;
 796       break;
 797    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 798       dri2_dpy->min_swap_interval = 1;
 799       dri2_dpy->max_swap_interval = max_swap_interval;
 800       dri2_dpy->default_swap_interval = 1;
 801       break;
 802    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 803       dri2_dpy->min_swap_interval = 0;
 804       dri2_dpy->max_swap_interval = max_swap_interval;
 805       dri2_dpy->default_swap_interval = 0;
 806       break;
 807    default:
 808    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 809       dri2_dpy->min_swap_interval = 0;
 810       dri2_dpy->max_swap_interval = max_swap_interval;
 811       dri2_dpy->default_swap_interval = 1;
 812       break;
 813    }
 814 }
 815
 816 /* All platforms but DRM call this function to create the screen and populate
 817  * the driver_configs. DRM inherits that information from its display - GBM.
 818  */
 819 EGLBoolean
 820 dri2_create_screen(_EGLDisplay *disp)
 821 {
 822    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 823
 824    if (dri2_dpy->image_driver) {
 825       dri2_dpy->dri_screen =
 826          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
 827                                                   dri2_dpy->loader_extensions,
 828                                                   dri2_dpy->driver_extensions,
 829                                                   &dri2_dpy->driver_configs,
 830                                                   disp);
 831    } else if (dri2_dpy->dri2) {
 832       if (dri2_dpy->dri2->base.version >= 4) {
 833          dri2_dpy->dri_screen =
 834             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
 835                                              dri2_dpy->loader_extensions,
 836                                              dri2_dpy->driver_extensions,
 837                                              &dri2_dpy->driver_configs, disp);
 838       } else {
 839          dri2_dpy->dri_screen =
 840             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
 841                                             dri2_dpy->loader_extensions,
 842                                             &dri2_dpy->driver_configs, disp);
 843       }
 844    } else {
 845       assert(dri2_dpy->swrast);
 846       if (dri2_dpy->swrast->base.version >= 4) {
 847          dri2_dpy->dri_screen =
 848             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
 849                                                dri2_dpy->driver_extensions,
 850                                                &dri2_dpy->driver_configs, disp);
 851       } else {
 852          dri2_dpy->dri_screen =
 853             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
 854                                               &dri2_dpy->driver_configs, disp);
 855       }
 856    }
 857
 858    if (dri2_dpy->dri_screen == NULL) {
 859       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
 860       return EGL_FALSE;
 861    }
 862
 863    dri2_dpy->own_dri_screen = true;
 864    return EGL_TRUE;
 865 }
 866
 867 EGLBoolean
 868 dri2_setup_extensions(_EGLDisplay *disp)
 869 {
 870    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 871    const struct dri2_extension_match *mandatory_core_extensions;
 872    const __DRIextension **extensions;
 873
 874    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 875
 876    if (dri2_dpy->image_driver || dri2_dpy->dri2)
 877       mandatory_core_extensions = dri2_core_extensions;
 878    else
 879       mandatory_core_extensions = swrast_core_extensions;
 880
 881    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
 882       return EGL_FALSE;
 883
 884    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
 885    return EGL_TRUE;
 886 }
 887
 888 /**
 889  * Called via eglInitialize(), GLX_drv->API.Initialize().
 890  *
 891  * This must be guaranteed to be called exactly once, even if eglInitialize is
 892  * called many times (without a eglTerminate in between).
 893  */
 894 static EGLBoolean
 895 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
 896 {
 897    EGLBoolean ret = EGL_FALSE;
 898    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 899
 900    /* In the case where the application calls eglMakeCurrent(context1),
 901     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
 902     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
 903     * initialized, as we need it to be able to free context1 correctly.
 904     *
 905     * It would probably be safest to forcibly release the display with
 906     * dri2_display_release, to make sure the display is reinitialized correctly.
 907     * However, the EGL spec states that we need to keep a reference to the
 908     * current context (so we cannot call dri2_make_current(NULL)), and therefore
 909     * we would leak context1 as we would be missing the old display connection
 910     * to free it up correctly.
 911     */
 912    if (dri2_dpy) {
 913       dri2_dpy->ref_count++;
 914       return EGL_TRUE;
 915    }
 916
 917    switch (disp->Platform) {
 918    case _EGL_PLATFORM_SURFACELESS:
 919       ret = dri2_initialize_surfaceless(drv, disp);
 920       break;
 921    case _EGL_PLATFORM_X11:
 922       ret = dri2_initialize_x11(drv, disp);
 923       break;
 924    case _EGL_PLATFORM_DRM:
 925       ret = dri2_initialize_drm(drv, disp);
 926       break;
 927    case _EGL_PLATFORM_WAYLAND:
 928       ret = dri2_initialize_wayland(drv, disp);
 929       break;
 930    case _EGL_PLATFORM_ANDROID:
 931       ret = dri2_initialize_android(drv, disp);
 932       break;
 933    default:
 934       unreachable("Callers ensure we cannot get here.");
 935       return EGL_FALSE;
 936    }
 937
 938    if (!ret)
 939       return EGL_FALSE;
 940
 941    dri2_dpy = dri2_egl_display(disp);
 942    dri2_dpy->ref_count++;
 943
 944    return EGL_TRUE;
 945 }
 946
 947 /**
 948  * Decrement display reference count, and free up display if necessary.
 949  */
 950 static void
 951 dri2_display_release(_EGLDisplay *disp)
 952 {
 953    struct dri2_egl_display *dri2_dpy;
 954
 955    if (!disp)
 956       return;
 957
 958    dri2_dpy = dri2_egl_display(disp);
 959
 960    assert(dri2_dpy->ref_count > 0);
 961    dri2_dpy->ref_count--;
 962
 963    if (dri2_dpy->ref_count > 0)
 964       return;
 965
 966    _eglCleanupDisplay(disp);
 967    dri2_display_destroy(disp);
 968 }
 969
 970 void
 971 dri2_display_destroy(_EGLDisplay *disp)
 972 {
 973    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 974
 975    if (dri2_dpy->own_dri_screen) {
 976       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
 977          dri2_dpy->vtbl->close_screen_notify(disp);
 978       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 979    }
 980    if (dri2_dpy->fd >= 0)
 981       close(dri2_dpy->fd);
 982    if (dri2_dpy->driver)
 983       dlclose(dri2_dpy->driver);
 984    free(dri2_dpy->driver_name);
 985
 986 #ifdef HAVE_WAYLAND_PLATFORM
 987    free(dri2_dpy->device_name);
 988 #endif
 989
 990    switch (disp->Platform) {
 991    case _EGL_PLATFORM_X11:
 992       dri2_teardown_x11(dri2_dpy);
 993       break;
 994    case _EGL_PLATFORM_DRM:
 995       dri2_teardown_drm(dri2_dpy);
 996       break;
 997    case _EGL_PLATFORM_WAYLAND:
 998       dri2_teardown_wayland(dri2_dpy);
 999       break;
1000    default:
1001       /* TODO: add teardown for other platforms */
1002       break;
1003    }
1004
1005    /* The drm platform does not create the screen/driver_configs but reuses
1006     * the ones from the gbm device. As such the gbm itself is responsible
1007     * for the cleanup.
1008     */
1009    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1010       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1011          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1012       free(dri2_dpy->driver_configs);
1013    }
1014    free(dri2_dpy);
1015    disp->DriverData = NULL;
1016 }
1017
1018 __DRIbuffer *
1019 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1020                                     unsigned int att, unsigned int format)
1021 {
1022    struct dri2_egl_display *dri2_dpy =
1023       dri2_egl_display(dri2_surf->base.Resource.Display);
1024
1025    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1026       return NULL;
1027
1028    if (!dri2_surf->local_buffers[att]) {
1029       dri2_surf->local_buffers[att] =
1030          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1031                                         dri2_surf->base.Width, dri2_surf->base.Height);
1032    }
1033
1034    return dri2_surf->local_buffers[att];
1035 }
1036
1037 void
1038 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1039 {
1040    struct dri2_egl_display *dri2_dpy =
1041       dri2_egl_display(dri2_surf->base.Resource.Display);
1042
1043    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1044       if (dri2_surf->local_buffers[i]) {
1045          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1046                                        dri2_surf->local_buffers[i]);
1047          dri2_surf->local_buffers[i] = NULL;
1048       }
1049    }
1050 }
1051
1052 /**
1053  * Called via eglTerminate(), drv->API.Terminate().
1054  *
1055  * This must be guaranteed to be called exactly once, even if eglTerminate is
1056  * called many times (without a eglInitialize in between).
1057  */
1058 static EGLBoolean
1059 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
1060 {
1061    /* Release all non-current Context/Surfaces. */
1062    _eglReleaseDisplayResources(drv, disp);
1063
1064    dri2_display_release(disp);
1065
1066    return EGL_TRUE;
1067 }
1068
1069 /**
1070  * Set the error code after a call to
1071  * dri2_egl_display::dri2::createContextAttribs.
1072  */
1073 static void
1074 dri2_create_context_attribs_error(int dri_error)
1075 {
1076    EGLint egl_error;
1077
1078    switch (dri_error) {
1079    case __DRI_CTX_ERROR_SUCCESS:
1080       return;
1081
1082    case __DRI_CTX_ERROR_NO_MEMORY:
1083       egl_error = EGL_BAD_ALLOC;
1084       break;
1085
1086   /* From the EGL_KHR_create_context spec, section "Errors":
1087    *
1088    *   * If <config> does not support a client API context compatible
1089    *     with the requested API major and minor version, [...] context flags,
1090    *     and context reset notification behavior (for client API types where
1091    *     these attributes are supported), then an EGL_BAD_MATCH error is
1092    *     generated.
1093    *
1094    *   * If an OpenGL ES context is requested and the values for
1095    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1096    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1097    *     is not defined, than an EGL_BAD_MATCH error is generated.
1098    *
1099    *   * If an OpenGL context is requested, the requested version is
1100    *     greater than 3.2, and the value for attribute
1101    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1102    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1103    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1104    *     one of these bits set; or if the implementation does not support
1105    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1106    */
1107    case __DRI_CTX_ERROR_BAD_API:
1108    case __DRI_CTX_ERROR_BAD_VERSION:
1109    case __DRI_CTX_ERROR_BAD_FLAG:
1110       egl_error = EGL_BAD_MATCH;
1111       break;
1112
1113   /* From the EGL_KHR_create_context spec, section "Errors":
1114    *
1115    *   * If an attribute name or attribute value in <attrib_list> is not
1116    *     recognized (including unrecognized bits in bitmask attributes),
1117    *     then an EGL_BAD_ATTRIBUTE error is generated."
1118    */
1119    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1120    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1121       egl_error = EGL_BAD_ATTRIBUTE;
1122       break;
1123
1124    default:
1125       assert(0);
1126       egl_error = EGL_BAD_MATCH;
1127       break;
1128    }
1129
1130    _eglError(egl_error, "dri2_create_context");
1131 }
1132
1133 static bool
1134 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1135                           struct dri2_egl_display *dri2_dpy,
1136                           uint32_t *ctx_attribs,
1137                           unsigned *num_attribs)
1138 {
1139    int pos = 0;
1140
1141    assert(*num_attribs >= NUM_ATTRIBS);
1142
1143    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1144    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1145    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1146    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1147
1148    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1149       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1150        * extension, don't even try to send it the robust-access flag.
1151        * It may explode.  Instead, generate the required EGL error here.
1152        */
1153       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1154             && !dri2_dpy->robustness) {
1155          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1156          return false;
1157       }
1158
1159       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1160       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1161          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1162    }
1163
1164    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1165       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1166        * extension, don't even try to send it a reset strategy.  It may
1167        * explode.  Instead, generate the required EGL error here.
1168        */
1169       if (!dri2_dpy->robustness) {
1170          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1171          return false;
1172       }
1173
1174       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1175       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1176    }
1177
1178    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1179       unsigned val;
1180
1181       switch (dri2_ctx->base.ContextPriority) {
1182       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1183          val = __DRI_CTX_PRIORITY_HIGH;
1184          break;
1185       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1186          val = __DRI_CTX_PRIORITY_MEDIUM;
1187          break;
1188       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1189          val = __DRI_CTX_PRIORITY_LOW;
1190          break;
1191       default:
1192          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1193          return false;
1194       }
1195
1196       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1197       ctx_attribs[pos++] = val;
1198    }
1199
1200    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1201       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1202       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1203    }
1204
1205    *num_attribs = pos;
1206
1207    return true;
1208 }
1209
1210 /**
1211  * Called via eglCreateContext(), drv->API.CreateContext().
1212  */
1213 static _EGLContext *
1214 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
1215                     _EGLContext *share_list, const EGLint *attrib_list)
1216 {
1217    struct dri2_egl_context *dri2_ctx;
1218    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1219    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1220    __DRIcontext *shared =
1221       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1222    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1223    const __DRIconfig *dri_config;
1224    int api;
1225    unsigned error;
1226    unsigned num_attribs = NUM_ATTRIBS;
1227    uint32_t ctx_attribs[NUM_ATTRIBS];
1228
1229    (void) drv;
1230
1231    dri2_ctx = malloc(sizeof *dri2_ctx);
1232    if (!dri2_ctx) {
1233       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1234       return NULL;
1235    }
1236
1237    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1238       goto cleanup;
1239
1240    /* The EGL_EXT_create_context_robustness spec says:
1241     *
1242     *    "Add to the eglCreateContext context creation errors: [...]
1243     *
1244     *     * If the reset notification behavior of <share_context> and the
1245     *       newly created context are different then an EGL_BAD_MATCH error is
1246     *       generated."
1247     */
1248    if (share_list && share_list->ResetNotificationStrategy !=
1249                      dri2_ctx->base.ResetNotificationStrategy) {
1250       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1251       goto cleanup;
1252    }
1253
1254    /* The EGL_KHR_create_context_no_error spec says:
1255     *
1256     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1257     *    used to create <share_context> does not match the value of
1258     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1259     */
1260    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1261       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1262       goto cleanup;
1263    }
1264
1265    switch (dri2_ctx->base.ClientAPI) {
1266    case EGL_OPENGL_ES_API:
1267       switch (dri2_ctx->base.ClientMajorVersion) {
1268       case 1:
1269          api = __DRI_API_GLES;
1270          break;
1271       case 2:
1272          api = __DRI_API_GLES2;
1273          break;
1274       case 3:
1275          api = __DRI_API_GLES3;
1276          break;
1277       default:
1278          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1279          free(dri2_ctx);
1280          return NULL;
1281       }
1282       break;
1283    case EGL_OPENGL_API:
1284       if ((dri2_ctx->base.ClientMajorVersion >= 4
1285            || (dri2_ctx->base.ClientMajorVersion == 3
1286                && dri2_ctx->base.ClientMinorVersion >= 2))
1287           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1288          api = __DRI_API_OPENGL_CORE;
1289       else
1290          api = __DRI_API_OPENGL;
1291       break;
1292    default:
1293       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1294       free(dri2_ctx);
1295       return NULL;
1296    }
1297
1298    if (conf != NULL) {
1299       /* The config chosen here isn't necessarily
1300        * used for surfaces later.
1301        * A pixmap surface will use the single config.
1302        * This opportunity depends on disabling the
1303        * doubleBufferMode check in
1304        * src/mesa/main/context.c:check_compatible()
1305        */
1306       if (dri2_config->dri_config[1][0])
1307          dri_config = dri2_config->dri_config[1][0];
1308       else
1309          dri_config = dri2_config->dri_config[0][0];
1310
1311       /* EGL_WINDOW_BIT is set only when there is a double-buffered dri_config.
1312        * This makes sure the back buffer will always be used.
1313        */
1314       if (conf->SurfaceType & EGL_WINDOW_BIT)
1315          dri2_ctx->base.WindowRenderBuffer = EGL_BACK_BUFFER;
1316    }
1317    else
1318       dri_config = NULL;
1319
1320    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1321                                   &num_attribs))
1322       goto cleanup;
1323
1324    if (dri2_dpy->image_driver) {
1325       dri2_ctx->dri_context =
1326          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1327                                                       api,
1328                                                       dri_config,
1329                                                       shared,
1330                                                       num_attribs / 2,
1331                                                       ctx_attribs,
1332                                                       & error,
1333                                                       dri2_ctx);
1334       dri2_create_context_attribs_error(error);
1335    } else if (dri2_dpy->dri2) {
1336       if (dri2_dpy->dri2->base.version >= 3) {
1337          dri2_ctx->dri_context =
1338             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1339                                                  api,
1340                                                  dri_config,
1341                                                  shared,
1342                                                  num_attribs / 2,
1343                                                  ctx_attribs,
1344                                                  & error,
1345                                                  dri2_ctx);
1346          dri2_create_context_attribs_error(error);
1347       } else {
1348          dri2_ctx->dri_context =
1349             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1350                                                    api,
1351                                                    dri_config,
1352                                                    shared,
1353                                                    dri2_ctx);
1354       }
1355    } else {
1356       assert(dri2_dpy->swrast);
1357       if (dri2_dpy->swrast->base.version >= 3) {
1358          dri2_ctx->dri_context =
1359             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1360                                                    api,
1361                                                    dri_config,
1362                                                    shared,
1363                                                    num_attribs / 2,
1364                                                    ctx_attribs,
1365                                                    & error,
1366                                                    dri2_ctx);
1367          dri2_create_context_attribs_error(error);
1368       } else {
1369          dri2_ctx->dri_context =
1370             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1371                                                      api,
1372                                                      dri_config,
1373                                                      shared,
1374                                                      dri2_ctx);
1375       }
1376    }
1377
1378    if (!dri2_ctx->dri_context)
1379       goto cleanup;
1380
1381    return &dri2_ctx->base;
1382
1383  cleanup:
1384    free(dri2_ctx);
1385    return NULL;
1386 }
1387
1388 /**
1389  * Called via eglDestroyContext(), drv->API.DestroyContext().
1390  */
1391 static EGLBoolean
1392 dri2_destroy_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1393 {
1394    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1395    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1396
1397    if (_eglPutContext(ctx)) {
1398       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1399       free(dri2_ctx);
1400    }
1401
1402    return EGL_TRUE;
1403 }
1404
1405 EGLBoolean
1406 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
1407         _EGLConfig *conf, const EGLint *attrib_list, EGLBoolean enable_out_fence)
1408 {
1409    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1410    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1411
1412    dri2_surf->out_fence_fd = -1;
1413    dri2_surf->enable_out_fence = false;
1414    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1415        dri2_dpy->fence->get_capabilities &&
1416        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1417         __DRI_FENCE_CAP_NATIVE_FD)) {
1418       dri2_surf->enable_out_fence = enable_out_fence;
1419    }
1420
1421    return _eglInitSurface(surf, dpy, type, conf, attrib_list);
1422 }
1423
1424 static void
1425 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1426 {
1427    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1428
1429    if (dri2_surf->out_fence_fd >= 0)
1430       close(dri2_surf->out_fence_fd);
1431
1432    dri2_surf->out_fence_fd = fence_fd;
1433 }
1434
1435 void
1436 dri2_fini_surface(_EGLSurface *surf)
1437 {
1438    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1439
1440    dri2_surface_set_out_fence_fd(surf, -1);
1441    dri2_surf->enable_out_fence = false;
1442 }
1443
1444 static EGLBoolean
1445 dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1446 {
1447    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1448
1449    if (!_eglPutSurface(surf))
1450       return EGL_TRUE;
1451
1452    return dri2_dpy->vtbl->destroy_surface(drv, dpy, surf);
1453 }
1454
1455 static void
1456 dri2_surf_update_fence_fd(_EGLContext *ctx,
1457                           _EGLDisplay *dpy, _EGLSurface *surf)
1458 {
1459    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1460    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1461    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1462    int fence_fd = -1;
1463    void *fence;
1464
1465    if (!dri2_surf->enable_out_fence)
1466       return;
1467
1468    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1469    if (fence) {
1470       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1471                                                fence);
1472       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1473    }
1474    dri2_surface_set_out_fence_fd(surf, fence_fd);
1475 }
1476
1477 /**
1478  * Called via eglMakeCurrent(), drv->API.MakeCurrent().
1479  */
1480 static EGLBoolean
1481 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
1482                   _EGLSurface *rsurf, _EGLContext *ctx)
1483 {
1484    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1485    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1486    _EGLContext *old_ctx;
1487    _EGLSurface *old_dsurf, *old_rsurf;
1488    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1489    __DRIdrawable *ddraw, *rdraw;
1490    __DRIcontext *cctx;
1491    EGLBoolean unbind;
1492
1493    if (!dri2_dpy)
1494       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1495
1496    /* make new bindings */
1497    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf)) {
1498       /* _eglBindContext already sets the EGL error (in _eglCheckMakeCurrent) */
1499       return EGL_FALSE;
1500    }
1501
1502    /* flush before context switch */
1503    if (old_ctx)
1504       dri2_gl_flush();
1505
1506    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1507    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1508    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1509
1510    if (old_ctx) {
1511       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1512
1513       if (old_dsurf)
1514          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1515       dri2_dpy->core->unbindContext(old_cctx);
1516    }
1517
1518    unbind = (cctx == NULL && ddraw == NULL && rdraw == NULL);
1519
1520    if (unbind || dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1521       dri2_destroy_surface(drv, disp, old_dsurf);
1522       dri2_destroy_surface(drv, disp, old_rsurf);
1523
1524       if (!unbind)
1525          dri2_dpy->ref_count++;
1526       if (old_ctx) {
1527          EGLDisplay old_disp = _eglGetDisplayHandle(old_ctx->Resource.Display);
1528          dri2_destroy_context(drv, disp, old_ctx);
1529          dri2_display_release(old_disp);
1530       }
1531
1532       return EGL_TRUE;
1533    } else {
1534       /* undo the previous _eglBindContext */
1535       _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1536       assert(&dri2_ctx->base == ctx &&
1537              tmp_dsurf == dsurf &&
1538              tmp_rsurf == rsurf);
1539
1540       _eglPutSurface(dsurf);
1541       _eglPutSurface(rsurf);
1542       _eglPutContext(ctx);
1543
1544       _eglPutSurface(old_dsurf);
1545       _eglPutSurface(old_rsurf);
1546       _eglPutContext(old_ctx);
1547
1548       /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1549        * setting the error to EGL_BAD_MATCH is surely better than leaving it
1550        * as EGL_SUCCESS.
1551        */
1552       return _eglError(EGL_BAD_MATCH, "eglMakeCurrent");
1553    }
1554 }
1555
1556 __DRIdrawable *
1557 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1558 {
1559    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1560
1561    return dri2_surf->dri_drawable;
1562 }
1563
1564 /*
1565  * Called from eglGetProcAddress() via drv->API.GetProcAddress().
1566  */
1567 static _EGLProc
1568 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
1569 {
1570    return _glapi_get_proc_address(procname);
1571 }
1572
1573 static _EGLSurface*
1574 dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1575                            _EGLConfig *conf, void *native_window,
1576                            const EGLint *attrib_list)
1577 {
1578    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1579    return dri2_dpy->vtbl->create_window_surface(drv, dpy, conf, native_window,
1580                                                 attrib_list);
1581 }
1582
1583 static _EGLSurface*
1584 dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1585                            _EGLConfig *conf, void *native_pixmap,
1586                            const EGLint *attrib_list)
1587 {
1588    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1589    return dri2_dpy->vtbl->create_pixmap_surface(drv, dpy, conf, native_pixmap,
1590                                                 attrib_list);
1591 }
1592
1593 static _EGLSurface*
1594 dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
1595                            _EGLConfig *conf, const EGLint *attrib_list)
1596 {
1597    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1598    return dri2_dpy->vtbl->create_pbuffer_surface(drv, dpy, conf, attrib_list);
1599 }
1600
1601 static EGLBoolean
1602 dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1603                    EGLint interval)
1604 {
1605    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1606    if (!dri2_dpy->vtbl->swap_interval)
1607       return EGL_TRUE;
1608    return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval);
1609 }
1610
1611 /**
1612  * Asks the client API to flush any rendering to the drawable so that we can
1613  * do our swapbuffers.
1614  */
1615 void
1616 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1617 {
1618    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1619    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1620
1621    if (dri2_dpy->flush) {
1622       if (dri2_dpy->flush->base.version >= 4) {
1623          /* We know there's a current context because:
1624           *
1625           *     "If surface is not bound to the calling thread’s current
1626           *      context, an EGL_BAD_SURFACE error is generated."
1627          */
1628          _EGLContext *ctx = _eglGetCurrentContext();
1629          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1630
1631          /* From the EGL 1.4 spec (page 52):
1632           *
1633           *     "The contents of ancillary buffers are always undefined
1634           *      after calling eglSwapBuffers."
1635           */
1636          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1637                                            dri_drawable,
1638                                            __DRI2_FLUSH_DRAWABLE |
1639                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1640                                            __DRI2_THROTTLE_SWAPBUFFER);
1641       } else {
1642          dri2_dpy->flush->flush(dri_drawable);
1643       }
1644    }
1645 }
1646
1647 static EGLBoolean
1648 dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1649 {
1650    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1651    _EGLContext *ctx = _eglGetCurrentContext();
1652
1653    if (ctx && surf)
1654       dri2_surf_update_fence_fd(ctx, dpy, surf);
1655    return dri2_dpy->vtbl->swap_buffers(drv, dpy, surf);
1656 }
1657
1658 static EGLBoolean
1659 dri2_swap_buffers_with_damage(_EGLDriver *drv, _EGLDisplay *dpy,
1660                               _EGLSurface *surf,
1661                               const EGLint *rects, EGLint n_rects)
1662 {
1663    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1664    _EGLContext *ctx = _eglGetCurrentContext();
1665
1666    if (ctx && surf)
1667       dri2_surf_update_fence_fd(ctx, dpy, surf);
1668    return dri2_dpy->vtbl->swap_buffers_with_damage(drv, dpy, surf,
1669                                                    rects, n_rects);
1670 }
1671
1672 static EGLBoolean
1673 dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1674                          EGLint numRects, const EGLint *rects)
1675 {
1676    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1677    return dri2_dpy->vtbl->swap_buffers_region(drv, dpy, surf, numRects, rects);
1678 }
1679
1680 static EGLBoolean
1681 dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1682                        EGLint *rects, EGLint n_rects)
1683 {
1684    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1685    return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
1686 }
1687
1688 static EGLBoolean
1689 dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1690                      EGLint x, EGLint y, EGLint width, EGLint height)
1691 {
1692    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1693    return dri2_dpy->vtbl->post_sub_buffer(drv, dpy, surf, x, y, width, height);
1694 }
1695
1696 static EGLBoolean
1697 dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
1698                   void *native_pixmap_target)
1699 {
1700    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1701    return dri2_dpy->vtbl->copy_buffers(drv, dpy, surf, native_pixmap_target);
1702 }
1703
1704 static EGLint
1705 dri2_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
1706 {
1707    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1708    return dri2_dpy->vtbl->query_buffer_age(drv, dpy, surf);
1709 }
1710
1711 static EGLBoolean
1712 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
1713 {
1714    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1715    _EGLSurface *surf = ctx->DrawSurface;
1716    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1717
1718    (void) drv;
1719
1720    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
1721     * we need to copy fake to real here.*/
1722
1723    if (dri2_dpy->flush != NULL)
1724       dri2_dpy->flush->flush(dri_drawable);
1725
1726    return EGL_TRUE;
1727 }
1728
1729 static EGLBoolean
1730 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
1731 {
1732    (void) drv;
1733    (void) disp;
1734
1735    if (engine != EGL_CORE_NATIVE_ENGINE)
1736       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
1737    /* glXWaitX(); */
1738
1739    return EGL_TRUE;
1740 }
1741
1742 static EGLBoolean
1743 dri2_bind_tex_image(_EGLDriver *drv,
1744                     _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1745 {
1746    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1747    struct dri2_egl_context *dri2_ctx;
1748    _EGLContext *ctx;
1749    GLint format, target;
1750    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1751
1752    ctx = _eglGetCurrentContext();
1753    dri2_ctx = dri2_egl_context(ctx);
1754
1755    if (!_eglBindTexImage(drv, disp, surf, buffer))
1756       return EGL_FALSE;
1757
1758    switch (surf->TextureFormat) {
1759    case EGL_TEXTURE_RGB:
1760       format = __DRI_TEXTURE_FORMAT_RGB;
1761       break;
1762    case EGL_TEXTURE_RGBA:
1763       format = __DRI_TEXTURE_FORMAT_RGBA;
1764       break;
1765    default:
1766       assert(!"Unexpected texture format in dri2_bind_tex_image()");
1767       format = __DRI_TEXTURE_FORMAT_RGBA;
1768    }
1769
1770    switch (surf->TextureTarget) {
1771    case EGL_TEXTURE_2D:
1772       target = GL_TEXTURE_2D;
1773       break;
1774    default:
1775       target = GL_TEXTURE_2D;
1776       assert(!"Unexpected texture target in dri2_bind_tex_image()");
1777    }
1778
1779    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
1780                                        target, format,
1781                                        dri_drawable);
1782
1783    return EGL_TRUE;
1784 }
1785
1786 static EGLBoolean
1787 dri2_release_tex_image(_EGLDriver *drv,
1788                        _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
1789 {
1790    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1791    struct dri2_egl_context *dri2_ctx;
1792    _EGLContext *ctx;
1793    GLint  target;
1794    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1795
1796    ctx = _eglGetCurrentContext();
1797    dri2_ctx = dri2_egl_context(ctx);
1798
1799    if (!_eglReleaseTexImage(drv, disp, surf, buffer))
1800       return EGL_FALSE;
1801
1802    switch (surf->TextureTarget) {
1803    case EGL_TEXTURE_2D:
1804       target = GL_TEXTURE_2D;
1805       break;
1806    default:
1807       assert(0);
1808    }
1809
1810    if (dri2_dpy->tex_buffer->base.version >= 3 &&
1811        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
1812       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
1813                                              target, dri_drawable);
1814    }
1815
1816    return EGL_TRUE;
1817 }
1818
1819 static _EGLImage*
1820 dri2_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
1821                   EGLenum target, EGLClientBuffer buffer,
1822                   const EGLint *attr_list)
1823 {
1824    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1825    return dri2_dpy->vtbl->create_image(drv, dpy, ctx, target, buffer,
1826                                        attr_list);
1827 }
1828
1829 static _EGLImage *
1830 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
1831 {
1832    struct dri2_egl_image *dri2_img;
1833
1834    if (dri_image == NULL) {
1835       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1836       return NULL;
1837    }
1838
1839    dri2_img = malloc(sizeof *dri2_img);
1840    if (!dri2_img) {
1841       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
1842       return NULL;
1843    }
1844
1845    _eglInitImage(&dri2_img->base, disp);
1846
1847    dri2_img->dri_image = dri_image;
1848
1849    return &dri2_img->base;
1850 }
1851
1852 /**
1853  * Translate a DRI Image extension error code into an EGL error code.
1854  */
1855 static EGLint
1856 egl_error_from_dri_image_error(int dri_error)
1857 {
1858    switch (dri_error) {
1859    case __DRI_IMAGE_ERROR_SUCCESS:
1860       return EGL_SUCCESS;
1861    case __DRI_IMAGE_ERROR_BAD_ALLOC:
1862       return EGL_BAD_ALLOC;
1863    case __DRI_IMAGE_ERROR_BAD_MATCH:
1864       return EGL_BAD_MATCH;
1865    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
1866       return EGL_BAD_PARAMETER;
1867    case __DRI_IMAGE_ERROR_BAD_ACCESS:
1868       return EGL_BAD_ACCESS;
1869    default:
1870       assert(0);
1871       return EGL_BAD_ALLOC;
1872    }
1873 }
1874
1875 static _EGLImage *
1876 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
1877                                    EGLClientBuffer buffer,
1878                                    const EGLint *attr_list)
1879 {
1880    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1881    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1882    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
1883    __DRIimage *dri_image;
1884
1885    if (renderbuffer == 0) {
1886       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1887       return EGL_NO_IMAGE_KHR;
1888    }
1889
1890    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
1891       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
1892       return EGL_NO_IMAGE_KHR;
1893    }
1894
1895    if (dri2_dpy->image->base.version >= 17 &&
1896        dri2_dpy->image->createImageFromRenderbuffer2) {
1897       unsigned error = ~0;
1898
1899       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
1900                dri2_ctx->dri_context, renderbuffer, NULL, &error);
1901
1902       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
1903
1904       if (!dri_image) {
1905          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
1906          return EGL_NO_IMAGE_KHR;
1907       }
1908    } else {
1909       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
1910                dri2_ctx->dri_context, renderbuffer, NULL);
1911       if (!dri_image) {
1912          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1913          return EGL_NO_IMAGE_KHR;
1914       }
1915    }
1916
1917    return dri2_create_image_from_dri(disp, dri_image);
1918 }
1919
1920 #ifdef HAVE_WAYLAND_PLATFORM
1921
1922 /* This structure describes how a wl_buffer maps to one or more
1923  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
1924  * offsets and strides of the planes in the buffer.  This table maps a
1925  * wl_drm format code to a description of the planes in the buffer
1926  * that lets us create a __DRIimage for each of the planes. */
1927
1928 static const struct wl_drm_components_descriptor {
1929    uint32_t dri_components;
1930    EGLint components;
1931    int nplanes;
1932 } wl_drm_components[] = {
1933    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
1934    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
1935    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
1936    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
1937    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
1938 };
1939
1940 static _EGLImage *
1941 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
1942                                     EGLClientBuffer _buffer,
1943                                     const EGLint *attr_list)
1944 {
1945    struct wl_drm_buffer *buffer;
1946    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1947    const struct wl_drm_components_descriptor *f;
1948    __DRIimage *dri_image;
1949    _EGLImageAttribs attrs;
1950    int32_t plane;
1951
1952    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
1953                                    (struct wl_resource *) _buffer);
1954    if (!buffer)
1955        return NULL;
1956
1957    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
1958       return NULL;
1959
1960    plane = attrs.PlaneWL;
1961    f = buffer->driver_format;
1962    if (plane < 0 || plane >= f->nplanes) {
1963       _eglError(EGL_BAD_PARAMETER,
1964                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
1965       return NULL;
1966    }
1967
1968    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
1969    if (dri_image == NULL && plane == 0)
1970       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
1971    if (dri_image == NULL) {
1972       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
1973       return NULL;
1974    }
1975
1976    return dri2_create_image_from_dri(disp, dri_image);
1977 }
1978 #endif
1979
1980 static EGLBoolean
1981 dri2_get_sync_values_chromium(_EGLDisplay *dpy, _EGLSurface *surf,
1982                               EGLuint64KHR *ust, EGLuint64KHR *msc,
1983                               EGLuint64KHR *sbc)
1984 {
1985    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
1986    return dri2_dpy->vtbl->get_sync_values(dpy, surf, ust, msc, sbc);
1987 }
1988
1989 /**
1990  * Set the error code after a call to
1991  * dri2_egl_image::dri_image::createImageFromTexture.
1992  */
1993 static void
1994 dri2_create_image_khr_texture_error(int dri_error)
1995 {
1996    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
1997
1998    if (egl_error != EGL_SUCCESS)
1999       _eglError(egl_error, "dri2_create_image_khr_texture");
2000 }
2001
2002 static _EGLImage *
2003 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2004                                    EGLenum target,
2005                                    EGLClientBuffer buffer,
2006                                    const EGLint *attr_list)
2007 {
2008    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2009    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2010    struct dri2_egl_image *dri2_img;
2011    GLuint texture = (GLuint) (uintptr_t) buffer;
2012    _EGLImageAttribs attrs;
2013    GLuint depth;
2014    GLenum gl_target;
2015    unsigned error;
2016
2017    if (texture == 0) {
2018       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2019       return EGL_NO_IMAGE_KHR;
2020    }
2021
2022    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2023       return EGL_NO_IMAGE_KHR;
2024
2025    switch (target) {
2026    case EGL_GL_TEXTURE_2D_KHR:
2027       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2028          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2029          return EGL_NO_IMAGE_KHR;
2030       }
2031       depth = 0;
2032       gl_target = GL_TEXTURE_2D;
2033       break;
2034    case EGL_GL_TEXTURE_3D_KHR:
2035       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2036          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2037          return EGL_NO_IMAGE_KHR;
2038       }
2039
2040       depth = attrs.GLTextureZOffset;
2041       gl_target = GL_TEXTURE_3D;
2042       break;
2043    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2044    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2045    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2046    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2047    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2048    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2049       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2050          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2051          return EGL_NO_IMAGE_KHR;
2052       }
2053
2054       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2055       gl_target = GL_TEXTURE_CUBE_MAP;
2056       break;
2057    default:
2058       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2059       return EGL_NO_IMAGE_KHR;
2060    }
2061
2062    dri2_img = malloc(sizeof *dri2_img);
2063    if (!dri2_img) {
2064       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2065       return EGL_NO_IMAGE_KHR;
2066    }
2067
2068    _eglInitImage(&dri2_img->base, disp);
2069
2070    dri2_img->dri_image =
2071       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2072                                               gl_target,
2073                                               texture,
2074                                               depth,
2075                                               attrs.GLTextureLevel,
2076                                               &error,
2077                                               dri2_img);
2078    dri2_create_image_khr_texture_error(error);
2079
2080    if (!dri2_img->dri_image) {
2081       free(dri2_img);
2082       return EGL_NO_IMAGE_KHR;
2083    }
2084    return &dri2_img->base;
2085 }
2086
2087 static EGLBoolean
2088 dri2_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
2089                    EGLint attribute, EGLint *value)
2090 {
2091    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2092    if (!dri2_dpy->vtbl->query_surface)
2093       return _eglQuerySurface(drv, dpy, surf, attribute, value);
2094    return dri2_dpy->vtbl->query_surface(drv, dpy, surf, attribute, value);
2095 }
2096
2097 static struct wl_buffer*
2098 dri2_create_wayland_buffer_from_image(_EGLDriver *drv, _EGLDisplay *dpy,
2099                                       _EGLImage *img)
2100 {
2101    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2102    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, dpy, img);
2103 }
2104
2105 #ifdef HAVE_LIBDRM
2106 static _EGLImage *
2107 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2108                                   EGLClientBuffer buffer, const EGLint *attr_list)
2109 {
2110    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2111    EGLint format, name, pitch;
2112    _EGLImageAttribs attrs;
2113    __DRIimage *dri_image;
2114
2115    name = (EGLint) (uintptr_t) buffer;
2116
2117    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2118       return NULL;
2119
2120    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2121        attrs.DRMBufferStrideMESA <= 0) {
2122       _eglError(EGL_BAD_PARAMETER,
2123                 "bad width, height or stride");
2124       return NULL;
2125    }
2126
2127    switch (attrs.DRMBufferFormatMESA) {
2128    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2129       format = __DRI_IMAGE_FORMAT_ARGB8888;
2130       pitch = attrs.DRMBufferStrideMESA;
2131       break;
2132    default:
2133       _eglError(EGL_BAD_PARAMETER,
2134                 "dri2_create_image_khr: unsupported pixmap depth");
2135       return NULL;
2136    }
2137
2138    dri_image =
2139       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2140                                            attrs.Width,
2141                                            attrs.Height,
2142                                            format,
2143                                            name,
2144                                            pitch,
2145                                            NULL);
2146
2147    return dri2_create_image_from_dri(disp, dri_image);
2148 }
2149
2150 static EGLBoolean
2151 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2152 {
2153    /**
2154      * The spec says:
2155      *
2156      * "Required attributes and their values are as follows:
2157      *
2158      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2159      *
2160      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2161      *    by drm_fourcc.h and used as the pixel_format parameter of the
2162      *    drm_mode_fb_cmd2 ioctl."
2163      *
2164      * and
2165      *
2166      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2167      *    incomplete, EGL_BAD_PARAMETER is generated."
2168      */
2169    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2170        !attrs->DMABufFourCC.IsPresent)
2171       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2172
2173    /**
2174     * Also:
2175     *
2176     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2177     *  specified for a plane's pitch or offset isn't supported by EGL,
2178     *  EGL_BAD_ACCESS is generated."
2179     */
2180    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2181       if (attrs->DMABufPlanePitches[i].IsPresent &&
2182           attrs->DMABufPlanePitches[i].Value <= 0)
2183          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2184    }
2185
2186    /**
2187     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2188     * attribute values may be given.
2189     *
2190     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2191     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2192     */
2193    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2194       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2195           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2196          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2197    }
2198
2199    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2200     * mandate it, we only accept the same modifier across all planes. */
2201    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2202       if (attrs->DMABufPlaneFds[i].IsPresent) {
2203          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2204                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2205              (attrs->DMABufPlaneModifiersLo[0].Value !=
2206                attrs->DMABufPlaneModifiersLo[i].Value) ||
2207              (attrs->DMABufPlaneModifiersHi[0].Value !=
2208                attrs->DMABufPlaneModifiersHi[i].Value))
2209             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2210       }
2211    }
2212
2213    return EGL_TRUE;
2214 }
2215
2216 /* Returns the total number of file descriptors. Zero indicates an error. */
2217 static unsigned
2218 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2219 {
2220    unsigned plane_n;
2221
2222    switch (attrs->DMABufFourCC.Value) {
2223    case DRM_FORMAT_R8:
2224    case DRM_FORMAT_RG88:
2225    case DRM_FORMAT_GR88:
2226    case DRM_FORMAT_R16:
2227    case DRM_FORMAT_GR1616:
2228    case DRM_FORMAT_RGB332:
2229    case DRM_FORMAT_BGR233:
2230    case DRM_FORMAT_XRGB4444:
2231    case DRM_FORMAT_XBGR4444:
2232    case DRM_FORMAT_RGBX4444:
2233    case DRM_FORMAT_BGRX4444:
2234    case DRM_FORMAT_ARGB4444:
2235    case DRM_FORMAT_ABGR4444:
2236    case DRM_FORMAT_RGBA4444:
2237    case DRM_FORMAT_BGRA4444:
2238    case DRM_FORMAT_XRGB1555:
2239    case DRM_FORMAT_XBGR1555:
2240    case DRM_FORMAT_RGBX5551:
2241    case DRM_FORMAT_BGRX5551:
2242    case DRM_FORMAT_ARGB1555:
2243    case DRM_FORMAT_ABGR1555:
2244    case DRM_FORMAT_RGBA5551:
2245    case DRM_FORMAT_BGRA5551:
2246    case DRM_FORMAT_RGB565:
2247    case DRM_FORMAT_BGR565:
2248    case DRM_FORMAT_RGB888:
2249    case DRM_FORMAT_BGR888:
2250    case DRM_FORMAT_XRGB8888:
2251    case DRM_FORMAT_XBGR8888:
2252    case DRM_FORMAT_RGBX8888:
2253    case DRM_FORMAT_BGRX8888:
2254    case DRM_FORMAT_ARGB8888:
2255    case DRM_FORMAT_ABGR8888:
2256    case DRM_FORMAT_RGBA8888:
2257    case DRM_FORMAT_BGRA8888:
2258    case DRM_FORMAT_XRGB2101010:
2259    case DRM_FORMAT_XBGR2101010:
2260    case DRM_FORMAT_RGBX1010102:
2261    case DRM_FORMAT_BGRX1010102:
2262    case DRM_FORMAT_ARGB2101010:
2263    case DRM_FORMAT_ABGR2101010:
2264    case DRM_FORMAT_RGBA1010102:
2265    case DRM_FORMAT_BGRA1010102:
2266    case DRM_FORMAT_YUYV:
2267    case DRM_FORMAT_YVYU:
2268    case DRM_FORMAT_UYVY:
2269    case DRM_FORMAT_VYUY:
2270       plane_n = 1;
2271       break;
2272    case DRM_FORMAT_NV12:
2273    case DRM_FORMAT_NV21:
2274    case DRM_FORMAT_NV16:
2275    case DRM_FORMAT_NV61:
2276       plane_n = 2;
2277       break;
2278    case DRM_FORMAT_YUV410:
2279    case DRM_FORMAT_YVU410:
2280    case DRM_FORMAT_YUV411:
2281    case DRM_FORMAT_YVU411:
2282    case DRM_FORMAT_YUV420:
2283    case DRM_FORMAT_YVU420:
2284    case DRM_FORMAT_YUV422:
2285    case DRM_FORMAT_YVU422:
2286    case DRM_FORMAT_YUV444:
2287    case DRM_FORMAT_YVU444:
2288       plane_n = 3;
2289       break;
2290    default:
2291       _eglError(EGL_BAD_ATTRIBUTE, "invalid format");
2292       return 0;
2293    }
2294
2295    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2296       /**
2297        * The modifiers extension spec says:
2298        *
2299        * "Modifiers may modify any attribute of a buffer import, including
2300        *  but not limited to adding extra planes to a format which
2301        *  otherwise does not have those planes. As an example, a modifier
2302        *  may add a plane for an external compression buffer to a
2303        *  single-plane format. The exact meaning and effect of any
2304        *  modifier is canonically defined by drm_fourcc.h, not as part of
2305        *  this extension."
2306        */
2307       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2308           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2309          plane_n = i + 1;
2310       }
2311    }
2312
2313    /**
2314      * The spec says:
2315      *
2316      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2317      *    incomplete, EGL_BAD_PARAMETER is generated."
2318      */
2319    for (unsigned i = 0; i < plane_n; ++i) {
2320       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2321           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2322           !attrs->DMABufPlanePitches[i].IsPresent) {
2323          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2324          return 0;
2325       }
2326    }
2327
2328    /**
2329     * The spec also says:
2330     *
2331     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2332     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2333     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2334     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2335     */
2336    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2337       if (attrs->DMABufPlaneFds[i].IsPresent ||
2338           attrs->DMABufPlaneOffsets[i].IsPresent ||
2339           attrs->DMABufPlanePitches[i].IsPresent) {
2340          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2341          return 0;
2342       }
2343    }
2344
2345    return plane_n;
2346 }
2347
2348 static EGLBoolean
2349 dri2_query_dma_buf_formats(_EGLDriver *drv, _EGLDisplay *disp,
2350                             EGLint max, EGLint *formats, EGLint *count)
2351 {
2352    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2353    if (max < 0 || (max > 0 && formats == NULL))
2354       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2355
2356    if (dri2_dpy->image->base.version < 15 ||
2357        dri2_dpy->image->queryDmaBufFormats == NULL)
2358       return EGL_FALSE;
2359
2360    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2361                                             formats, count))
2362       return EGL_FALSE;
2363
2364    return EGL_TRUE;
2365 }
2366
2367 static EGLBoolean
2368 dri2_query_dma_buf_modifiers(_EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2369                              EGLint max, EGLuint64KHR *modifiers,
2370                              EGLBoolean *external_only, EGLint *count)
2371 {
2372    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2373
2374    if (max < 0)
2375       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2376
2377    if (max > 0 && modifiers == NULL)
2378       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2379
2380    if (dri2_dpy->image->base.version < 15 ||
2381        dri2_dpy->image->queryDmaBufModifiers == NULL)
2382       return EGL_FALSE;
2383
2384    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2385                                              max, modifiers,
2386                                              (unsigned int *) external_only,
2387                                              count) == false)
2388       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2389
2390    return EGL_TRUE;
2391 }
2392
2393 /**
2394  * The spec says:
2395  *
2396  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2397  *  EGL will take a reference to the dma_buf(s) which it will release at any
2398  *  time while the EGLDisplay is initialized. It is the responsibility of the
2399  *  application to close the dma_buf file descriptors."
2400  *
2401  * Therefore we must never close or otherwise modify the file descriptors.
2402  */
2403 _EGLImage *
2404 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2405                           EGLClientBuffer buffer, const EGLint *attr_list)
2406 {
2407    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2408    _EGLImage *res;
2409    _EGLImageAttribs attrs;
2410    __DRIimage *dri_image;
2411    unsigned num_fds;
2412    int fds[DMA_BUF_MAX_PLANES];
2413    int pitches[DMA_BUF_MAX_PLANES];
2414    int offsets[DMA_BUF_MAX_PLANES];
2415    uint64_t modifier;
2416    bool has_modifier = false;
2417    unsigned error;
2418
2419    /**
2420     * The spec says:
2421     *
2422     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2423     *     error EGL_BAD_PARAMETER is generated."
2424     */
2425    if (buffer != NULL) {
2426       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2427       return NULL;
2428    }
2429
2430    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2431       return NULL;
2432
2433    if (!dri2_check_dma_buf_attribs(&attrs))
2434       return NULL;
2435
2436    num_fds = dri2_check_dma_buf_format(&attrs);
2437    if (!num_fds)
2438       return NULL;
2439
2440    for (unsigned i = 0; i < num_fds; ++i) {
2441       fds[i] = attrs.DMABufPlaneFds[i].Value;
2442       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2443       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2444    }
2445
2446    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2447     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2448     * attrs.DMABufPlaneModifiersHi[0] */
2449    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2450       modifier = (uint64_t) attrs.DMABufPlaneModifiersHi[0].Value << 32;
2451       modifier |= (uint64_t) (attrs.DMABufPlaneModifiersLo[0].Value & 0xffffffff);
2452       has_modifier = true;
2453    }
2454
2455    if (has_modifier) {
2456       if (dri2_dpy->image->base.version < 15 ||
2457           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2458          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2459          return EGL_NO_IMAGE_KHR;
2460       }
2461       dri_image =
2462          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2463             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2464             modifier, fds, num_fds, pitches, offsets,
2465             attrs.DMABufYuvColorSpaceHint.Value,
2466             attrs.DMABufSampleRangeHint.Value,
2467             attrs.DMABufChromaHorizontalSiting.Value,
2468             attrs.DMABufChromaVerticalSiting.Value,
2469             &error,
2470             NULL);
2471    }
2472    else {
2473       dri_image =
2474          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2475             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2476             fds, num_fds, pitches, offsets,
2477             attrs.DMABufYuvColorSpaceHint.Value,
2478             attrs.DMABufSampleRangeHint.Value,
2479             attrs.DMABufChromaHorizontalSiting.Value,
2480             attrs.DMABufChromaVerticalSiting.Value,
2481             &error,
2482             NULL);
2483    }
2484    dri2_create_image_khr_texture_error(error);
2485
2486    if (!dri_image)
2487       return EGL_NO_IMAGE_KHR;
2488
2489    res = dri2_create_image_from_dri(disp, dri_image);
2490
2491    return res;
2492 }
2493 static _EGLImage *
2494 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2495                            const EGLint *attr_list)
2496 {
2497    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2498    struct dri2_egl_image *dri2_img;
2499    _EGLImageAttribs attrs;
2500    unsigned int dri_use, valid_mask;
2501    int format;
2502
2503    (void) drv;
2504
2505    if (!attr_list) {
2506       _eglError(EGL_BAD_PARAMETER, __func__);
2507       return EGL_NO_IMAGE_KHR;
2508    }
2509
2510    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2511       return EGL_NO_IMAGE_KHR;
2512
2513    if (attrs.Width <= 0 || attrs.Height <= 0) {
2514       _eglError(EGL_BAD_PARAMETER, __func__);
2515       return EGL_NO_IMAGE_KHR;
2516    }
2517
2518    switch (attrs.DRMBufferFormatMESA) {
2519    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2520       format = __DRI_IMAGE_FORMAT_ARGB8888;
2521       break;
2522    default:
2523       _eglError(EGL_BAD_PARAMETER, __func__);
2524       return EGL_NO_IMAGE_KHR;
2525    }
2526
2527    valid_mask =
2528       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2529       EGL_DRM_BUFFER_USE_SHARE_MESA |
2530       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2531    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2532       _eglError(EGL_BAD_PARAMETER, __func__);
2533       return EGL_NO_IMAGE_KHR;
2534    }
2535
2536    dri_use = 0;
2537    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2538       dri_use |= __DRI_IMAGE_USE_SHARE;
2539    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2540       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2541    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2542       dri_use |= __DRI_IMAGE_USE_CURSOR;
2543
2544    dri2_img = malloc(sizeof *dri2_img);
2545    if (!dri2_img) {
2546       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2547       return EGL_NO_IMAGE_KHR;
2548    }
2549
2550    _eglInitImage(&dri2_img->base, disp);
2551
2552    dri2_img->dri_image =
2553       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2554                                    attrs.Width, attrs.Height,
2555                                    format, dri_use, dri2_img);
2556    if (dri2_img->dri_image == NULL) {
2557       free(dri2_img);
2558        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2559       return EGL_NO_IMAGE_KHR;
2560    }
2561
2562    return &dri2_img->base;
2563 }
2564
2565 static EGLBoolean
2566 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2567                           EGLint *name, EGLint *handle, EGLint *stride)
2568 {
2569    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2570    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2571
2572    (void) drv;
2573
2574    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2575                                             __DRI_IMAGE_ATTRIB_NAME, name))
2576       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2577
2578    if (handle)
2579       dri2_dpy->image->queryImage(dri2_img->dri_image,
2580                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
2581
2582    if (stride)
2583       dri2_dpy->image->queryImage(dri2_img->dri_image,
2584                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
2585
2586    return EGL_TRUE;
2587 }
2588
2589 static EGLBoolean
2590 dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp,
2591                                      _EGLImage *img,
2592                                      EGLint *fourcc, EGLint *nplanes,
2593                                      EGLuint64KHR *modifiers)
2594 {
2595    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2596    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2597
2598    (void) drv;
2599
2600
2601    if (nplanes)
2602       dri2_dpy->image->queryImage(dri2_img->dri_image,
2603                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes);
2604    if (fourcc)
2605       dri2_dpy->image->queryImage(dri2_img->dri_image,
2606                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
2607
2608    if (modifiers)
2609       *modifiers = 0;
2610
2611    return EGL_TRUE;
2612 }
2613
2614 static EGLBoolean
2615 dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2616                                int *fds, EGLint *strides, EGLint *offsets)
2617 {
2618    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2619    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2620
2621    (void) drv;
2622
2623    /* rework later to provide multiple fds/strides/offsets */
2624    if (fds)
2625       dri2_dpy->image->queryImage(dri2_img->dri_image,
2626                                   __DRI_IMAGE_ATTRIB_FD, fds);
2627
2628    if (strides)
2629       dri2_dpy->image->queryImage(dri2_img->dri_image,
2630                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
2631
2632    if (offsets) {
2633       int img_offset;
2634       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
2635                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
2636       if (ret)
2637          offsets[0] = img_offset;
2638       else
2639          offsets[0] = 0;
2640    }
2641
2642    return EGL_TRUE;
2643 }
2644
2645 #endif
2646
2647 _EGLImage *
2648 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
2649                       _EGLContext *ctx, EGLenum target,
2650                       EGLClientBuffer buffer, const EGLint *attr_list)
2651 {
2652    (void) drv;
2653
2654    switch (target) {
2655    case EGL_GL_TEXTURE_2D_KHR:
2656    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2657    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2658    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2659    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2660    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2661    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2662    case EGL_GL_TEXTURE_3D_KHR:
2663       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
2664    case EGL_GL_RENDERBUFFER_KHR:
2665       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
2666 #ifdef HAVE_LIBDRM
2667    case EGL_DRM_BUFFER_MESA:
2668       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
2669    case EGL_LINUX_DMA_BUF_EXT:
2670       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
2671 #endif
2672 #ifdef HAVE_WAYLAND_PLATFORM
2673    case EGL_WAYLAND_BUFFER_WL:
2674       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
2675 #endif
2676    default:
2677       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2678       return EGL_NO_IMAGE_KHR;
2679    }
2680 }
2681
2682 static EGLBoolean
2683 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
2684 {
2685    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2686    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
2687
2688    (void) drv;
2689
2690    dri2_dpy->image->destroyImage(dri2_img->dri_image);
2691    free(dri2_img);
2692
2693    return EGL_TRUE;
2694 }
2695
2696 #ifdef HAVE_WAYLAND_PLATFORM
2697
2698 static void
2699 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
2700                          struct wl_drm_buffer *buffer)
2701 {
2702    _EGLDisplay *disp = user_data;
2703    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2704    __DRIimage *img;
2705    int dri_components = 0;
2706
2707    if (fd == -1)
2708       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
2709                                                   buffer->width,
2710                                                   buffer->height,
2711                                                   buffer->format,
2712                                                   (int*)&name, 1,
2713                                                   buffer->stride,
2714                                                   buffer->offset,
2715                                                   NULL);
2716    else
2717       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
2718                                                 buffer->width,
2719                                                 buffer->height,
2720                                                 buffer->format,
2721                                                 &fd, 1,
2722                                                 buffer->stride,
2723                                                 buffer->offset,
2724                                                 NULL);
2725
2726    if (img == NULL)
2727       return;
2728
2729    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
2730
2731    buffer->driver_format = NULL;
2732    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
2733       if (wl_drm_components[i].dri_components == dri_components)
2734          buffer->driver_format = &wl_drm_components[i];
2735
2736    if (buffer->driver_format == NULL)
2737       dri2_dpy->image->destroyImage(img);
2738    else
2739       buffer->driver_buffer = img;
2740 }
2741
2742 static void
2743 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
2744 {
2745    _EGLDisplay *disp = user_data;
2746    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2747
2748    dri2_dpy->image->destroyImage(buffer->driver_buffer);
2749 }
2750
2751 static EGLBoolean
2752 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2753                              struct wl_display *wl_dpy)
2754 {
2755    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2756    const struct wayland_drm_callbacks wl_drm_callbacks = {
2757       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
2758       .reference_buffer = dri2_wl_reference_buffer,
2759       .release_buffer = dri2_wl_release_buffer
2760    };
2761    int flags = 0;
2762    uint64_t cap;
2763
2764    (void) drv;
2765
2766    if (dri2_dpy->wl_server_drm)
2767            return EGL_FALSE;
2768
2769    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
2770        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
2771        dri2_dpy->image->base.version >= 7 &&
2772        dri2_dpy->image->createImageFromFds != NULL)
2773       flags |= WAYLAND_DRM_PRIME;
2774
2775    dri2_dpy->wl_server_drm =
2776            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
2777                             &wl_drm_callbacks, disp, flags);
2778
2779    if (!dri2_dpy->wl_server_drm)
2780            return EGL_FALSE;
2781
2782 #ifdef HAVE_DRM_PLATFORM
2783    /* We have to share the wl_drm instance with gbm, so gbm can convert
2784     * wl_buffers to gbm bos. */
2785    if (dri2_dpy->gbm_dri)
2786       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
2787 #endif
2788
2789    return EGL_TRUE;
2790 }
2791
2792 static EGLBoolean
2793 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
2794                                struct wl_display *wl_dpy)
2795 {
2796    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2797
2798    (void) drv;
2799
2800    if (!dri2_dpy->wl_server_drm)
2801            return EGL_FALSE;
2802
2803    wayland_drm_uninit(dri2_dpy->wl_server_drm);
2804    dri2_dpy->wl_server_drm = NULL;
2805
2806    return EGL_TRUE;
2807 }
2808
2809 static EGLBoolean
2810 dri2_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *disp,
2811                              struct wl_resource *buffer_resource,
2812                              EGLint attribute, EGLint *value)
2813 {
2814    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2815    struct wl_drm_buffer *buffer;
2816    const struct wl_drm_components_descriptor *format;
2817
2818    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
2819    if (!buffer)
2820       return EGL_FALSE;
2821
2822    format = buffer->driver_format;
2823    switch (attribute) {
2824    case EGL_TEXTURE_FORMAT:
2825       *value = format->components;
2826       return EGL_TRUE;
2827    case EGL_WIDTH:
2828       *value = buffer->width;
2829       return EGL_TRUE;
2830    case EGL_HEIGHT:
2831       *value = buffer->height;
2832       return EGL_TRUE;
2833    }
2834
2835    return EGL_FALSE;
2836 }
2837 #endif
2838
2839 static void
2840 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
2841 {
2842    p_atomic_inc(&sync->refcount);
2843 }
2844
2845 static void
2846 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
2847                     struct dri2_egl_sync *dri2_sync)
2848 {
2849    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
2850       switch (dri2_sync->base.Type) {
2851       case EGL_SYNC_REUSABLE_KHR:
2852          cnd_destroy(&dri2_sync->cond);
2853          break;
2854       case EGL_SYNC_NATIVE_FENCE_ANDROID:
2855          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
2856             close(dri2_sync->base.SyncFd);
2857          break;
2858       default:
2859          break;
2860       }
2861
2862       if (dri2_sync->fence)
2863          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
2864
2865       free(dri2_sync);
2866    }
2867 }
2868
2869 static _EGLSync *
2870 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
2871                  EGLenum type, const EGLAttrib *attrib_list)
2872 {
2873    _EGLContext *ctx = _eglGetCurrentContext();
2874    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2875    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2876    struct dri2_egl_sync *dri2_sync;
2877    EGLint ret;
2878    pthread_condattr_t attr;
2879
2880    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
2881    if (!dri2_sync) {
2882       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2883       return NULL;
2884    }
2885
2886    if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
2887       free(dri2_sync);
2888       return NULL;
2889    }
2890
2891    switch (type) {
2892    case EGL_SYNC_FENCE_KHR:
2893       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
2894       if (!dri2_sync->fence) {
2895          /* Why did it fail? DRI doesn't return an error code, so we emit
2896           * a generic EGL error that doesn't communicate user error.
2897           */
2898          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
2899          free(dri2_sync);
2900          return NULL;
2901       }
2902       break;
2903
2904    case EGL_SYNC_CL_EVENT_KHR:
2905       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
2906                                  dri2_dpy->dri_screen,
2907                                  dri2_sync->base.CLEvent);
2908       /* this can only happen if the cl_event passed in is invalid. */
2909       if (!dri2_sync->fence) {
2910          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2911          free(dri2_sync);
2912          return NULL;
2913       }
2914
2915       /* the initial status must be "signaled" if the cl_event is signaled */
2916       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
2917                                             dri2_sync->fence, 0, 0))
2918          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2919       break;
2920
2921    case EGL_SYNC_REUSABLE_KHR:
2922       /* intialize attr */
2923       ret = pthread_condattr_init(&attr);
2924
2925       if (ret) {
2926          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2927          free(dri2_sync);
2928          return NULL;
2929       }
2930
2931       /* change clock attribute to CLOCK_MONOTONIC */
2932       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2933
2934       if (ret) {
2935          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2936          free(dri2_sync);
2937          return NULL;
2938       }
2939
2940       ret = pthread_cond_init(&dri2_sync->cond, &attr);
2941
2942       if (ret) {
2943          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
2944          free(dri2_sync);
2945          return NULL;
2946       }
2947
2948       /* initial status of reusable sync must be "unsignaled" */
2949       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
2950       break;
2951
2952    case EGL_SYNC_NATIVE_FENCE_ANDROID:
2953       if (dri2_dpy->fence->create_fence_fd) {
2954          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
2955                                     dri2_ctx->dri_context,
2956                                     dri2_sync->base.SyncFd);
2957       }
2958       if (!dri2_sync->fence) {
2959          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
2960          free(dri2_sync);
2961          return NULL;
2962       }
2963       break;
2964    }
2965
2966    p_atomic_set(&dri2_sync->refcount, 1);
2967    return &dri2_sync->base;
2968 }
2969
2970 static EGLBoolean
2971 dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
2972 {
2973    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
2974    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
2975    EGLint ret = EGL_TRUE;
2976    EGLint err;
2977
2978    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
2979     * then unlock all threads possibly blocked by the reusable sync before
2980     * destroying it.
2981     */
2982    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
2983        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
2984       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
2985       /* unblock all threads currently blocked by sync */
2986       err = cnd_broadcast(&dri2_sync->cond);
2987
2988       if (err) {
2989          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
2990          ret = EGL_FALSE;
2991       }
2992    }
2993
2994    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
2995
2996    return ret;
2997 }
2998
2999 static EGLint
3000 dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3001 {
3002    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3003    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3004
3005    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3006
3007    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3008       /* try to retrieve the actual native fence fd.. if rendering is
3009        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3010        */
3011       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3012                                                    dri2_sync->fence);
3013    }
3014
3015    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3016       /* if native fence fd still not created, return an error: */
3017       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3018       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3019    }
3020
3021    return dup(sync->SyncFd);
3022 }
3023
3024 static void
3025 dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *dpy,
3026                           EGLSetBlobFuncANDROID set,
3027                           EGLGetBlobFuncANDROID get)
3028 {
3029    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3030    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3031                                    dpy->BlobCacheSet,
3032                                    dpy->BlobCacheGet);
3033 }
3034
3035 static EGLint
3036 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3037                       EGLint flags, EGLTime timeout)
3038 {
3039    _EGLContext *ctx = _eglGetCurrentContext();
3040    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3041    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3042    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3043    unsigned wait_flags = 0;
3044
3045    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3046
3047    /* The EGL_KHR_fence_sync spec states:
3048     *
3049     *    "If no context is current for the bound API,
3050     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3051     */
3052    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3053       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3054
3055    /* the sync object should take a reference while waiting */
3056    dri2_egl_ref_sync(dri2_sync);
3057
3058    switch (sync->Type) {
3059    case EGL_SYNC_FENCE_KHR:
3060    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3061    case EGL_SYNC_CL_EVENT_KHR:
3062       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3063                                          dri2_sync->fence, wait_flags,
3064                                          timeout))
3065          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3066       else
3067          ret = EGL_TIMEOUT_EXPIRED_KHR;
3068       break;
3069
3070    case EGL_SYNC_REUSABLE_KHR:
3071       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3072           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3073          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3074          dri2_gl_flush();
3075       }
3076
3077       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3078       if (timeout == EGL_FOREVER_KHR) {
3079          mtx_lock(&dri2_sync->mutex);
3080          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3081          mtx_unlock(&dri2_sync->mutex);
3082       } else {
3083          /* if reusable sync has not been yet signaled */
3084          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3085             /* timespecs for cnd_timedwait */
3086             struct timespec current;
3087             struct timespec expire;
3088
3089             /* We override the clock to monotonic when creating the condition
3090              * variable. */
3091             clock_gettime(CLOCK_MONOTONIC, &current);
3092
3093             /* calculating when to expire */
3094             expire.tv_nsec = timeout % 1000000000L;
3095             expire.tv_sec = timeout / 1000000000L;
3096
3097             expire.tv_nsec += current.tv_nsec;
3098             expire.tv_sec += current.tv_sec;
3099
3100             /* expire.nsec now is a number between 0 and 1999999998 */
3101             if (expire.tv_nsec > 999999999L) {
3102                expire.tv_sec++;
3103                expire.tv_nsec -= 1000000000L;
3104             }
3105
3106             mtx_lock(&dri2_sync->mutex);
3107             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3108             mtx_unlock(&dri2_sync->mutex);
3109
3110             if (ret == thrd_busy) {
3111                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3112                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3113                } else {
3114                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3115                   ret = EGL_FALSE;
3116                }
3117             }
3118          }
3119       }
3120       break;
3121   }
3122   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3123
3124   return ret;
3125 }
3126
3127 static EGLBoolean
3128 dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
3129                       EGLenum mode)
3130 {
3131    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3132    EGLint ret;
3133
3134    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3135       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3136
3137    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3138       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3139
3140    dri2_sync->base.SyncStatus = mode;
3141
3142    if (mode == EGL_SIGNALED_KHR) {
3143       ret = cnd_broadcast(&dri2_sync->cond);
3144
3145       /* fail to broadcast */
3146       if (ret)
3147          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3148    }
3149
3150    return EGL_TRUE;
3151 }
3152
3153 static EGLint
3154 dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
3155 {
3156    _EGLContext *ctx = _eglGetCurrentContext();
3157    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3158    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3159    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3160
3161    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3162                                      dri2_sync->fence, 0);
3163    return EGL_TRUE;
3164 }
3165
3166 static int
3167 dri2_interop_query_device_info(_EGLDisplay *dpy, _EGLContext *ctx,
3168                                struct mesa_glinterop_device_info *out)
3169 {
3170    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3171    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3172
3173    if (!dri2_dpy->interop)
3174       return MESA_GLINTEROP_UNSUPPORTED;
3175
3176    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3177 }
3178
3179 static int
3180 dri2_interop_export_object(_EGLDisplay *dpy, _EGLContext *ctx,
3181                            struct mesa_glinterop_export_in *in,
3182                            struct mesa_glinterop_export_out *out)
3183 {
3184    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
3185    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3186
3187    if (!dri2_dpy->interop)
3188       return MESA_GLINTEROP_UNSUPPORTED;
3189
3190    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3191 }
3192
3193 /**
3194  * This is the main entrypoint into the driver, called by libEGL.
3195  * Create a new _EGLDriver object and init its dispatch table.
3196  */
3197 _EGLDriver *
3198 _eglBuiltInDriver(void)
3199 {
3200    _EGLDriver *dri2_drv = calloc(1, sizeof *dri2_drv);
3201    if (!dri2_drv)
3202       return NULL;
3203
3204    _eglInitDriverFallbacks(dri2_drv);
3205    dri2_drv->API.Initialize = dri2_initialize;
3206    dri2_drv->API.Terminate = dri2_terminate;
3207    dri2_drv->API.CreateContext = dri2_create_context;
3208    dri2_drv->API.DestroyContext = dri2_destroy_context;
3209    dri2_drv->API.MakeCurrent = dri2_make_current;
3210    dri2_drv->API.CreateWindowSurface = dri2_create_window_surface;
3211    dri2_drv->API.CreatePixmapSurface = dri2_create_pixmap_surface;
3212    dri2_drv->API.CreatePbufferSurface = dri2_create_pbuffer_surface;
3213    dri2_drv->API.DestroySurface = dri2_destroy_surface;
3214    dri2_drv->API.GetProcAddress = dri2_get_proc_address;
3215    dri2_drv->API.WaitClient = dri2_wait_client;
3216    dri2_drv->API.WaitNative = dri2_wait_native;
3217    dri2_drv->API.BindTexImage = dri2_bind_tex_image;
3218    dri2_drv->API.ReleaseTexImage = dri2_release_tex_image;
3219    dri2_drv->API.SwapInterval = dri2_swap_interval;
3220    dri2_drv->API.SwapBuffers = dri2_swap_buffers;
3221    dri2_drv->API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
3222    dri2_drv->API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
3223    dri2_drv->API.SetDamageRegion = dri2_set_damage_region;
3224    dri2_drv->API.PostSubBufferNV = dri2_post_sub_buffer;
3225    dri2_drv->API.CopyBuffers = dri2_copy_buffers,
3226    dri2_drv->API.QueryBufferAge = dri2_query_buffer_age;
3227    dri2_drv->API.CreateImageKHR = dri2_create_image;
3228    dri2_drv->API.DestroyImageKHR = dri2_destroy_image_khr;
3229    dri2_drv->API.CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image;
3230    dri2_drv->API.QuerySurface = dri2_query_surface;
3231 #ifdef HAVE_LIBDRM
3232    dri2_drv->API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
3233    dri2_drv->API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
3234    dri2_drv->API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa;
3235    dri2_drv->API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa;
3236    dri2_drv->API.QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats;
3237    dri2_drv->API.QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers;
3238 #endif
3239 #ifdef HAVE_WAYLAND_PLATFORM
3240    dri2_drv->API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
3241    dri2_drv->API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
3242    dri2_drv->API.QueryWaylandBufferWL = dri2_query_wayland_buffer_wl;
3243 #endif
3244    dri2_drv->API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
3245    dri2_drv->API.CreateSyncKHR = dri2_create_sync;
3246    dri2_drv->API.ClientWaitSyncKHR = dri2_client_wait_sync;
3247    dri2_drv->API.SignalSyncKHR = dri2_signal_sync;
3248    dri2_drv->API.WaitSyncKHR = dri2_server_wait_sync;
3249    dri2_drv->API.DestroySyncKHR = dri2_destroy_sync;
3250    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
3251    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
3252    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
3253    dri2_drv->API.SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs;
3254
3255    dri2_drv->Name = "DRI2";
3256
3257    return dri2_drv;
3258 }