src/egl/drivers/dri2/egl_dri2.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdbool.h>
  29 #include <stdint.h>
  30 #include <stdbool.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdio.h>
  34 #include <limits.h>
  35 #include <dlfcn.h>
  36 #include <fcntl.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <c11/threads.h>
  40 #include <time.h>
  41 #ifdef HAVE_LIBDRM
  42 #include <xf86drm.h>
  43 #include "drm-uapi/drm_fourcc.h"
  44 #endif
  45 #include <GL/gl.h>
  46 #include <GL/internal/dri_interface.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49
  50 #ifdef HAVE_WAYLAND_PLATFORM
  51 #include <wayland-client.h>
  52 #include "wayland-drm.h"
  53 #include "wayland-drm-client-protocol.h"
  54 #include "linux-dmabuf-unstable-v1-client-protocol.h"
  55 #endif
  56
  57 #ifdef HAVE_X11_PLATFORM
  58 #include "X11/Xlibint.h"
  59 #endif
  60
  61 #include "egldefines.h"
  62 #include "egl_dri2.h"
  63 #include "GL/mesa_glinterop.h"
  64 #include "loader/loader.h"
  65 #include "util/libsync.h"
  66 #include "util/os_file.h"
  67 #include "util/u_atomic.h"
  68 #include "util/u_vector.h"
  69 #include "mapi/glapi/glapi.h"
  70 #include "util/bitscan.h"
  71 #include "util/u_math.h"
  72
  73 #define NUM_ATTRIBS 12
  74
  75 static const struct dri2_pbuffer_visual {
  76    const char *format_name;
  77    unsigned int dri_image_format;
  78    int rgba_shifts[4];
  79    unsigned int rgba_sizes[4];
  80 } dri2_pbuffer_visuals[] = {
  81    {
  82       "ABGR16F",
  83       __DRI_IMAGE_FORMAT_ABGR16161616F,
  84       { 0, 16, 32, 48 },
  85       { 16, 16, 16, 16 }
  86    },
  87    {
  88       "XBGR16F",
  89       __DRI_IMAGE_FORMAT_XBGR16161616F,
  90       { 0, 16, 32, -1 },
  91       { 16, 16, 16, 0 }
  92    },
  93    {
  94       "A2RGB10",
  95       __DRI_IMAGE_FORMAT_ARGB2101010,
  96       { 20, 10, 0, 30 },
  97       { 10, 10, 10, 2 }
  98    },
  99    {
 100       "X2RGB10",
 101       __DRI_IMAGE_FORMAT_XRGB2101010,
 102       { 20, 10, 0, -1 },
 103       { 10, 10, 10, 0 }
 104    },
 105    {
 106       "ARGB8888",
 107       __DRI_IMAGE_FORMAT_ARGB8888,
 108       { 16, 8, 0, 24 },
 109       { 8, 8, 8, 8 }
 110    },
 111    {
 112       "RGB888",
 113       __DRI_IMAGE_FORMAT_XRGB8888,
 114       { 16, 8, 0, -1 },
 115       { 8, 8, 8, 0 }
 116    },
 117    {
 118       "RGB565",
 119       __DRI_IMAGE_FORMAT_RGB565,
 120       { 11, 5, 0, -1 },
 121       { 5, 6, 5, 0 }
 122    },
 123 };
 124
 125 static void
 126 dri_set_background_context(void *loaderPrivate)
 127 {
 128    _EGLContext *ctx = _eglGetCurrentContext();
 129    _EGLThreadInfo *t = _eglGetCurrentThread();
 130
 131    _eglBindContextToThread(ctx, t);
 132 }
 133
 134 static void
 135 dri2_gl_flush()
 136 {
 137    static void (*glFlush)(void);
 138    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
 139
 140    mtx_lock(&glFlushMutex);
 141    if (!glFlush)
 142       glFlush = _glapi_get_proc_address("glFlush");
 143    mtx_unlock(&glFlushMutex);
 144
 145    /* if glFlush is not available things are horribly broken */
 146    if (!glFlush) {
 147       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
 148       return;
 149    }
 150
 151    glFlush();
 152 }
 153
 154 static GLboolean
 155 dri_is_thread_safe(void *loaderPrivate)
 156 {
 157    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 158    UNUSED _EGLDisplay *display =  dri2_surf->base.Resource.Display;
 159
 160 #ifdef HAVE_X11_PLATFORM
 161    Display *xdpy = (Display*)display->PlatformDisplay;
 162
 163    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
 164     * platform
 165     *
 166     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
 167     * It wll be NULL if XInitThreads wasn't called.
 168     */
 169    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
 170       return false;
 171 #endif
 172
 173    return true;
 174 }
 175
 176 const __DRIbackgroundCallableExtension background_callable_extension = {
 177    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
 178
 179    .setBackgroundContext = dri_set_background_context,
 180    .isThreadSafe         = dri_is_thread_safe,
 181 };
 182
 183 const __DRIuseInvalidateExtension use_invalidate = {
 184    .base = { __DRI_USE_INVALIDATE, 1 }
 185 };
 186
 187 static void
 188 dri2_get_pbuffer_drawable_info(__DRIdrawable * draw,
 189                                int *x, int *y, int *w, int *h,
 190                                void *loaderPrivate)
 191 {
 192    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 193
 194    *x = *y = 0;
 195    *w = dri2_surf->base.Width;
 196    *h = dri2_surf->base.Height;
 197 }
 198
 199 static int
 200 dri2_get_bytes_per_pixel(struct dri2_egl_surface *dri2_surf)
 201 {
 202    const int depth = dri2_surf->base.Config->BufferSize;
 203    return depth ? util_next_power_of_two(depth / 8) : 0;
 204 }
 205
 206 static void
 207 dri2_put_image(__DRIdrawable * draw, int op,
 208                int x, int y, int w, int h,
 209                char *data, void *loaderPrivate)
 210 {
 211    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 212    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 213    const int width = dri2_surf->base.Width;
 214    const int height = dri2_surf->base.Height;
 215    const int dst_stride = width*bpp;
 216    const int src_stride = w*bpp;
 217    const int x_offset = x*bpp;
 218    int copy_width = src_stride;
 219
 220    if (!dri2_surf->swrast_device_buffer)
 221       dri2_surf->swrast_device_buffer = malloc(height*dst_stride);
 222
 223    if (dri2_surf->swrast_device_buffer) {
 224       const char *src = data;
 225       char *dst = dri2_surf->swrast_device_buffer;
 226
 227       dst += x_offset;
 228       dst += y*dst_stride;
 229
 230       /* Drivers are allowed to submit OOB PutImage requests, so clip here. */
 231       if (copy_width > dst_stride - x_offset)
 232          copy_width = dst_stride - x_offset;
 233       if (h > height - y)
 234          h = height - y;
 235
 236       for (; 0 < h; --h) {
 237          memcpy(dst, src, copy_width);
 238          dst += dst_stride;
 239          src += src_stride;
 240       }
 241    }
 242 }
 243
 244 static void
 245 dri2_get_image(__DRIdrawable * read,
 246                int x, int y, int w, int h,
 247                char *data, void *loaderPrivate)
 248 {
 249    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 250    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
 251    const int width = dri2_surf->base.Width;
 252    const int height = dri2_surf->base.Height;
 253    const int src_stride = width*bpp;
 254    const int dst_stride = w*bpp;
 255    const int x_offset = x*bpp;
 256    int copy_width = dst_stride;
 257    const char *src = dri2_surf->swrast_device_buffer;
 258    char *dst = data;
 259
 260    if (!src) {
 261       memset(data, 0, copy_width * h);
 262       return;
 263    }
 264
 265    src += x_offset;
 266    src += y*src_stride;
 267
 268    /* Drivers are allowed to submit OOB GetImage requests, so clip here. */
 269    if (copy_width > src_stride - x_offset)
 270       copy_width = src_stride - x_offset;
 271    if (h > height - y)
 272       h = height - y;
 273
 274    for (; 0 < h; --h) {
 275       memcpy(dst, src, copy_width);
 276       src += src_stride;
 277       dst += dst_stride;
 278    }
 279
 280 }
 281
 282 /* HACK: technically we should have swrast_null, instead of these.
 283  */
 284 const __DRIswrastLoaderExtension swrast_pbuffer_loader_extension = {
 285    .base            = { __DRI_SWRAST_LOADER, 1 },
 286    .getDrawableInfo = dri2_get_pbuffer_drawable_info,
 287    .putImage        = dri2_put_image,
 288    .getImage        = dri2_get_image,
 289 };
 290
 291 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
 292    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
 293    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
 294    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
 295    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
 296    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
 297    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
 298    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
 299    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
 300    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
 301    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
 302    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
 303    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
 304    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
 305 };
 306
 307 const __DRIconfig *
 308 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
 309                     EGLenum colorspace)
 310 {
 311    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
 312    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
 313
 314    return conf->dri_config[double_buffer][srgb];
 315 }
 316
 317 static EGLBoolean
 318 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 319 {
 320    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
 321       return EGL_FALSE;
 322
 323    if (!_eglMatchConfig(conf, criteria))
 324       return EGL_FALSE;
 325
 326    return EGL_TRUE;
 327 }
 328
 329 void
 330 dri2_get_shifts_and_sizes(const __DRIcoreExtension *core,
 331                           const __DRIconfig *config, int *shifts,
 332                           unsigned int *sizes)
 333 {
 334    unsigned int mask;
 335
 336    if (core->getConfigAttrib(config, __DRI_ATTRIB_RED_SHIFT, (unsigned int *)&shifts[0])) {
 337       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SHIFT, (unsigned int *)&shifts[1]);
 338       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SHIFT, (unsigned int *)&shifts[2]);
 339       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SHIFT, (unsigned int *)&shifts[3]);
 340    } else {
 341       /* Driver isn't exposing shifts, so convert masks to shifts */
 342       core->getConfigAttrib(config, __DRI_ATTRIB_RED_MASK, &mask);
 343       shifts[0] = ffs(mask) - 1;
 344       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_MASK, &mask);
 345       shifts[1] = ffs(mask) - 1;
 346       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_MASK, &mask);
 347       shifts[2] = ffs(mask) - 1;
 348       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_MASK, &mask);
 349       shifts[3] = ffs(mask) - 1;
 350    }
 351
 352    core->getConfigAttrib(config, __DRI_ATTRIB_RED_SIZE, &sizes[0]);
 353    core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SIZE, &sizes[1]);
 354    core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SIZE, &sizes[2]);
 355    core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SIZE, &sizes[3]);
 356 }
 357
 358 void
 359 dri2_get_render_type_float(const __DRIcoreExtension *core,
 360                            const __DRIconfig *config,
 361                            bool *is_float)
 362 {
 363    unsigned int render_type;
 364
 365    core->getConfigAttrib(config, __DRI_ATTRIB_RENDER_TYPE, &render_type);
 366    *is_float = (render_type & __DRI_ATTRIB_FLOAT_BIT) ? true : false;
 367 }
 368
 369 unsigned int
 370 dri2_image_format_for_pbuffer_config(struct dri2_egl_display *dri2_dpy,
 371                                      const __DRIconfig *config)
 372 {
 373    int shifts[4];
 374    unsigned int sizes[4];
 375
 376    dri2_get_shifts_and_sizes(dri2_dpy->core, config, shifts, sizes);
 377
 378    for (unsigned i = 0; i < ARRAY_SIZE(dri2_pbuffer_visuals); ++i) {
 379       const struct dri2_pbuffer_visual *visual = &dri2_pbuffer_visuals[i];
 380
 381       if (shifts[0] == visual->rgba_shifts[0] &&
 382           shifts[1] == visual->rgba_shifts[1] &&
 383           shifts[2] == visual->rgba_shifts[2] &&
 384           shifts[3] == visual->rgba_shifts[3] &&
 385           sizes[0] == visual->rgba_sizes[0] &&
 386           sizes[1] == visual->rgba_sizes[1] &&
 387           sizes[2] == visual->rgba_sizes[2] &&
 388           sizes[3] == visual->rgba_sizes[3]) {
 389          return visual->dri_image_format;
 390       }
 391    }
 392
 393    return __DRI_IMAGE_FORMAT_NONE;
 394 }
 395
 396 struct dri2_egl_config *
 397 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
 398                 EGLint surface_type, const EGLint *attr_list,
 399                 const int *rgba_shifts, const unsigned int *rgba_sizes)
 400 {
 401    struct dri2_egl_config *conf;
 402    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 403    _EGLConfig base;
 404    unsigned int attrib, value, double_buffer;
 405    bool srgb = false;
 406    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
 407    int dri_shifts[4] = { -1, -1, -1, -1 };
 408    unsigned int dri_sizes[4] = { 0, 0, 0, 0 };
 409    _EGLConfig *matching_config;
 410    EGLint num_configs = 0;
 411    EGLint config_id;
 412
 413    _eglInitConfig(&base, disp, id);
 414
 415    double_buffer = 0;
 416    bind_to_texture_rgb = 0;
 417    bind_to_texture_rgba = 0;
 418
 419    for (int i = 0; i < __DRI_ATTRIB_MAX; ++i) {
 420       if (!dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib, &value))
 421          break;
 422
 423       switch (attrib) {
 424       case __DRI_ATTRIB_RENDER_TYPE:
 425          if (value & __DRI_ATTRIB_FLOAT_BIT)
 426             base.ComponentType = EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT;
 427          if (value & __DRI_ATTRIB_RGBA_BIT)
 428             value = EGL_RGB_BUFFER;
 429          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
 430             value = EGL_LUMINANCE_BUFFER;
 431          else
 432             return NULL;
 433          base.ColorBufferType = value;
 434          break;
 435
 436       case __DRI_ATTRIB_CONFIG_CAVEAT:
 437          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
 438             value = EGL_NON_CONFORMANT_CONFIG;
 439          else if (value & __DRI_ATTRIB_SLOW_BIT)
 440             value = EGL_SLOW_CONFIG;
 441          else
 442             value = EGL_NONE;
 443          base.ConfigCaveat = value;
 444          break;
 445
 446       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
 447          bind_to_texture_rgb = value;
 448          break;
 449
 450       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
 451          bind_to_texture_rgba = value;
 452          break;
 453
 454       case __DRI_ATTRIB_DOUBLE_BUFFER:
 455          double_buffer = value;
 456          break;
 457
 458       case __DRI_ATTRIB_RED_SIZE:
 459          dri_sizes[0] = value;
 460          base.RedSize = value;
 461          break;
 462
 463       case __DRI_ATTRIB_RED_MASK:
 464          dri_shifts[0] = ffs(value) - 1;
 465          break;
 466
 467       case __DRI_ATTRIB_RED_SHIFT:
 468          dri_shifts[0] = value;
 469          break;
 470
 471       case __DRI_ATTRIB_GREEN_SIZE:
 472          dri_sizes[1] = value;
 473          base.GreenSize = value;
 474          break;
 475
 476       case __DRI_ATTRIB_GREEN_MASK:
 477          dri_shifts[1] = ffs(value) - 1;
 478          break;
 479
 480       case __DRI_ATTRIB_GREEN_SHIFT:
 481          dri_shifts[1] = value;
 482          break;
 483
 484       case __DRI_ATTRIB_BLUE_SIZE:
 485          dri_sizes[2] = value;
 486          base.BlueSize = value;
 487          break;
 488
 489       case __DRI_ATTRIB_BLUE_MASK:
 490          dri_shifts[2] = ffs(value) - 1;
 491          break;
 492
 493       case __DRI_ATTRIB_BLUE_SHIFT:
 494          dri_shifts[2] = value;
 495          break;
 496
 497      case __DRI_ATTRIB_ALPHA_SIZE:
 498          dri_sizes[3] = value;
 499          base.AlphaSize = value;
 500          break;
 501
 502       case __DRI_ATTRIB_ALPHA_MASK:
 503          dri_shifts[3] = ffs(value) - 1;
 504          break;
 505
 506       case __DRI_ATTRIB_ALPHA_SHIFT:
 507          dri_shifts[3] = value;
 508          break;
 509
 510       case __DRI_ATTRIB_ACCUM_RED_SIZE:
 511       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
 512       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
 513       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
 514          /* Don't expose visuals with the accumulation buffer. */
 515          if (value > 0)
 516             return NULL;
 517          break;
 518
 519       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
 520          srgb = value != 0;
 521          if (!disp->Extensions.KHR_gl_colorspace && srgb)
 522             return NULL;
 523          break;
 524
 525       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
 526          base.MaxPbufferWidth = _EGL_MAX_PBUFFER_WIDTH;
 527          break;
 528       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
 529          base.MaxPbufferHeight = _EGL_MAX_PBUFFER_HEIGHT;
 530          break;
 531       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
 532          if (disp->Extensions.KHR_mutable_render_buffer)
 533             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
 534          break;
 535       default:
 536          key = dri2_to_egl_attribute_map[attrib];
 537          if (key != 0)
 538             _eglSetConfigKey(&base, key, value);
 539          break;
 540       }
 541    }
 542
 543    if (attr_list)
 544       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
 545          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
 546
 547    if (rgba_shifts && memcmp(rgba_shifts, dri_shifts, sizeof(dri_shifts)))
 548       return NULL;
 549
 550    if (rgba_sizes && memcmp(rgba_sizes, dri_sizes, sizeof(dri_sizes)))
 551       return NULL;
 552
 553    base.NativeRenderable = EGL_TRUE;
 554
 555    base.SurfaceType = surface_type;
 556    if (surface_type & (EGL_PBUFFER_BIT |
 557        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
 558       base.BindToTextureRGB = bind_to_texture_rgb;
 559       if (base.AlphaSize > 0)
 560          base.BindToTextureRGBA = bind_to_texture_rgba;
 561    }
 562
 563    if (double_buffer) {
 564       surface_type &= ~EGL_PIXMAP_BIT;
 565    }
 566
 567    /* No support for pbuffer + MSAA for now.
 568     *
 569     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
 570     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
 571     */
 572    if (base.Samples) {
 573       surface_type &= ~EGL_PBUFFER_BIT;
 574    }
 575
 576    if (!surface_type)
 577       return NULL;
 578
 579    base.RenderableType = disp->ClientAPIs;
 580    base.Conformant = disp->ClientAPIs;
 581
 582    base.MinSwapInterval = dri2_dpy->min_swap_interval;
 583    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
 584
 585    if (!_eglValidateConfig(&base, EGL_FALSE)) {
 586       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
 587       return NULL;
 588    }
 589
 590    config_id = base.ConfigID;
 591    base.ConfigID    = EGL_DONT_CARE;
 592    base.SurfaceType = EGL_DONT_CARE;
 593    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
 594                                  (_EGLArrayForEach) dri2_match_config, &base);
 595
 596    if (num_configs == 1) {
 597       conf = (struct dri2_egl_config *) matching_config;
 598
 599       if (!conf->dri_config[double_buffer][srgb])
 600          conf->dri_config[double_buffer][srgb] = dri_config;
 601       else
 602          /* a similar config type is already added (unlikely) => discard */
 603          return NULL;
 604    }
 605    else if (num_configs == 0) {
 606       conf = calloc(1, sizeof *conf);
 607       if (conf == NULL)
 608          return NULL;
 609
 610       conf->dri_config[double_buffer][srgb] = dri_config;
 611
 612       memcpy(&conf->base, &base, sizeof base);
 613       conf->base.SurfaceType = 0;
 614       conf->base.ConfigID = config_id;
 615
 616       _eglLinkConfig(&conf->base);
 617    }
 618    else {
 619       unreachable("duplicates should not be possible");
 620       return NULL;
 621    }
 622
 623    conf->base.SurfaceType |= surface_type;
 624
 625    return conf;
 626 }
 627
 628 EGLBoolean
 629 dri2_add_pbuffer_configs_for_visuals(_EGLDisplay *disp)
 630 {
 631    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 632    unsigned int format_count[ARRAY_SIZE(dri2_pbuffer_visuals)] = { 0 };
 633    unsigned int config_count = 0;
 634
 635    for (unsigned i = 0; dri2_dpy->driver_configs[i] != NULL; i++) {
 636       for (unsigned j = 0; j < ARRAY_SIZE(dri2_pbuffer_visuals); j++) {
 637          struct dri2_egl_config *dri2_conf;
 638
 639          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
 640                config_count + 1, EGL_PBUFFER_BIT, NULL,
 641                dri2_pbuffer_visuals[j].rgba_shifts, dri2_pbuffer_visuals[j].rgba_sizes);
 642
 643          if (dri2_conf) {
 644             if (dri2_conf->base.ConfigID == config_count + 1)
 645                config_count++;
 646             format_count[j]++;
 647          }
 648       }
 649    }
 650
 651    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
 652       if (!format_count[i]) {
 653          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
 654                dri2_pbuffer_visuals[i].format_name);
 655       }
 656    }
 657
 658    return (config_count != 0);
 659 }
 660
 661 __DRIimage *
 662 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
 663 {
 664    _EGLDisplay *disp = data;
 665    struct dri2_egl_image *dri2_img;
 666    _EGLImage *img;
 667
 668    (void) screen;
 669
 670    mtx_lock(&disp->Mutex);
 671    img = _eglLookupImage(image, disp);
 672    mtx_unlock(&disp->Mutex);
 673
 674    if (img == NULL) {
 675       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
 676       return NULL;
 677    }
 678
 679    dri2_img = dri2_egl_image(image);
 680
 681    return dri2_img->dri_image;
 682 }
 683
 684 const __DRIimageLookupExtension image_lookup_extension = {
 685    .base = { __DRI_IMAGE_LOOKUP, 1 },
 686
 687    .lookupEGLImage       = dri2_lookup_egl_image
 688 };
 689
 690 struct dri2_extension_match {
 691    const char *name;
 692    int version;
 693    int offset;
 694 };
 695
 696 static const struct dri2_extension_match dri3_driver_extensions[] = {
 697    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 698    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
 699    { NULL, 0, 0 }
 700 };
 701
 702 static const struct dri2_extension_match dri2_driver_extensions[] = {
 703    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 704    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
 705    { NULL, 0, 0 }
 706 };
 707
 708 static const struct dri2_extension_match dri2_core_extensions[] = {
 709    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
 710    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 711    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 712    { NULL, 0, 0 }
 713 };
 714
 715 static const struct dri2_extension_match swrast_driver_extensions[] = {
 716    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
 717    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
 718    { NULL, 0, 0 }
 719 };
 720
 721 static const struct dri2_extension_match swrast_core_extensions[] = {
 722    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
 723    { NULL, 0, 0 }
 724 };
 725
 726 static const struct dri2_extension_match optional_driver_extensions[] = {
 727    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
 728    { NULL, 0, 0 }
 729 };
 730
 731 static const struct dri2_extension_match optional_core_extensions[] = {
 732    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
 733    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
 734    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
 735    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
 736    { __DRI2_BUFFER_DAMAGE, 1, offsetof(struct dri2_egl_display, buffer_damage) },
 737    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
 738    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
 739    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
 740    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
 741    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
 742    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
 743    { NULL, 0, 0 }
 744 };
 745
 746 static EGLBoolean
 747 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
 748                      const struct dri2_extension_match *matches,
 749                      const __DRIextension **extensions,
 750                      bool optional)
 751 {
 752    int ret = EGL_TRUE;
 753    void *field;
 754
 755    for (int i = 0; extensions[i]; i++) {
 756       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
 757       for (int j = 0; matches[j].name; j++) {
 758          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 759              extensions[i]->version >= matches[j].version) {
 760             field = ((char *) dri2_dpy + matches[j].offset);
 761             *(const __DRIextension **) field = extensions[i];
 762             _eglLog(_EGL_INFO, "found extension %s version %d",
 763                     extensions[i]->name, extensions[i]->version);
 764             break;
 765          }
 766       }
 767    }
 768
 769    for (int j = 0; matches[j].name; j++) {
 770       field = ((char *) dri2_dpy + matches[j].offset);
 771       if (*(const __DRIextension **) field == NULL) {
 772          if (optional) {
 773             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
 774                     matches[j].name, matches[j].version);
 775          } else {
 776             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
 777                     matches[j].name, matches[j].version);
 778             ret = EGL_FALSE;
 779          }
 780       }
 781    }
 782
 783    return ret;
 784 }
 785
 786 static const __DRIextension **
 787 dri2_open_driver(_EGLDisplay *disp)
 788 {
 789    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 790    static const char *search_path_vars[] = {
 791       "LIBGL_DRIVERS_PATH",
 792       NULL,
 793    };
 794
 795    return loader_open_driver(dri2_dpy->driver_name,
 796                              &dri2_dpy->driver,
 797                              search_path_vars);
 798 }
 799
 800 static EGLBoolean
 801 dri2_load_driver_common(_EGLDisplay *disp,
 802                         const struct dri2_extension_match *driver_extensions)
 803 {
 804    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 805    const __DRIextension **extensions;
 806
 807    extensions = dri2_open_driver(disp);
 808    if (!extensions)
 809       return EGL_FALSE;
 810
 811    if (!dri2_bind_extensions(dri2_dpy, driver_extensions, extensions, false)) {
 812       dlclose(dri2_dpy->driver);
 813       dri2_dpy->driver = NULL;
 814       return EGL_FALSE;
 815    }
 816    dri2_dpy->driver_extensions = extensions;
 817
 818    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
 819
 820    return EGL_TRUE;
 821 }
 822
 823 EGLBoolean
 824 dri2_load_driver(_EGLDisplay *disp)
 825 {
 826    return dri2_load_driver_common(disp, dri2_driver_extensions);
 827 }
 828
 829 EGLBoolean
 830 dri2_load_driver_dri3(_EGLDisplay *disp)
 831 {
 832    return dri2_load_driver_common(disp, dri3_driver_extensions);
 833 }
 834
 835 EGLBoolean
 836 dri2_load_driver_swrast(_EGLDisplay *disp)
 837 {
 838    return dri2_load_driver_common(disp, swrast_driver_extensions);
 839 }
 840
 841 static unsigned
 842 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
 843 {
 844    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
 845    unsigned int value = 0;
 846
 847    if (!rendererQuery ||
 848        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
 849       return 0;
 850
 851    return value;
 852 }
 853
 854 static const char *
 855 dri2_query_driver_name(_EGLDisplay *disp)
 856 {
 857     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 858     return dri2_dpy->driver_name;
 859 }
 860
 861 static char *
 862 dri2_query_driver_config(_EGLDisplay *disp)
 863 {
 864     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 865     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
 866
 867     if (ext->base.version >= 2)
 868         return ext->getXml(dri2_dpy->driver_name);
 869
 870     return strdup(ext->xml);
 871 }
 872
 873
 874 void
 875 dri2_setup_screen(_EGLDisplay *disp)
 876 {
 877    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 878    unsigned int api_mask;
 879
 880    /*
 881     * EGL 1.5 specification defines the default value to 1. Moreover,
 882     * eglSwapInterval() is required to clamp requested value to the supported
 883     * range. Since the default value is implicitly assumed to be supported,
 884     * use it as both minimum and maximum for the platforms that do not allow
 885     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
 886     * override these values already.
 887     */
 888    dri2_dpy->min_swap_interval = 1;
 889    dri2_dpy->max_swap_interval = 1;
 890    dri2_dpy->default_swap_interval = 1;
 891
 892    if (dri2_dpy->image_driver) {
 893       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
 894    } else if (dri2_dpy->dri2) {
 895       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
 896    } else {
 897       assert(dri2_dpy->swrast);
 898       api_mask = 1 << __DRI_API_OPENGL |
 899                  1 << __DRI_API_GLES |
 900                  1 << __DRI_API_GLES2 |
 901                  1 << __DRI_API_GLES3;
 902    }
 903
 904    disp->ClientAPIs = 0;
 905    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
 906       disp->ClientAPIs |= EGL_OPENGL_BIT;
 907    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 908       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
 909    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 910       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
 911    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
 912       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
 913
 914    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
 915    disp->Extensions.KHR_no_config_context = EGL_TRUE;
 916    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 917
 918    if (dri2_dpy->configOptions) {
 919        disp->Extensions.MESA_query_driver = EGL_TRUE;
 920    }
 921
 922    /* Report back to EGL the bitmask of priorities supported */
 923    disp->Extensions.IMG_context_priority =
 924       dri2_renderer_query_integer(dri2_dpy,
 925                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
 926
 927    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
 928
 929    if (dri2_renderer_query_integer(dri2_dpy,
 930                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
 931       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
 932
 933    if (dri2_dpy->image_driver ||
 934        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
 935        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
 936       disp->Extensions.KHR_create_context = EGL_TRUE;
 937
 938       if (dri2_dpy->robustness)
 939          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
 940    }
 941
 942    if (dri2_dpy->no_error)
 943       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
 944
 945    if (dri2_dpy->fence) {
 946       disp->Extensions.KHR_fence_sync = EGL_TRUE;
 947       disp->Extensions.KHR_wait_sync = EGL_TRUE;
 948       if (dri2_dpy->fence->get_fence_from_cl_event)
 949          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
 950       if (dri2_dpy->fence->base.version >= 2 &&
 951           dri2_dpy->fence->get_capabilities) {
 952          unsigned capabilities =
 953             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
 954          disp->Extensions.ANDROID_native_fence_sync =
 955             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
 956       }
 957    }
 958
 959    if (dri2_dpy->blob)
 960       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
 961
 962    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 963
 964    if (dri2_dpy->image) {
 965       if (dri2_dpy->image->base.version >= 10 &&
 966           dri2_dpy->image->getCapabilities != NULL) {
 967          int capabilities;
 968
 969          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
 970          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
 971
 972          if (dri2_dpy->image->base.version >= 11)
 973             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 974       } else {
 975          disp->Extensions.MESA_drm_image = EGL_TRUE;
 976          if (dri2_dpy->image->base.version >= 11)
 977             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
 978       }
 979
 980       disp->Extensions.KHR_image_base = EGL_TRUE;
 981       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
 982       if (dri2_dpy->image->base.version >= 5 &&
 983           dri2_dpy->image->createImageFromTexture) {
 984          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
 985          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
 986
 987          if (dri2_renderer_query_integer(dri2_dpy,
 988                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
 989              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
 990       }
 991 #ifdef HAVE_LIBDRM
 992       if (dri2_dpy->image->base.version >= 8 &&
 993           dri2_dpy->image->createImageFromDmaBufs) {
 994          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
 995          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
 996       }
 997 #endif
 998    }
 999
1000    if (dri2_dpy->flush_control)
1001       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
1002
1003    if (dri2_dpy->buffer_damage && dri2_dpy->buffer_damage->set_damage_region)
1004       disp->Extensions.KHR_partial_update = EGL_TRUE;
1005
1006    disp->Extensions.EXT_protected_surface =
1007       dri2_renderer_query_integer(dri2_dpy,
1008                                   __DRI2_RENDERER_HAS_PROTECTED_CONTENT);
1009 }
1010
1011 void
1012 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
1013 {
1014    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1015    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1016
1017    /* Allow driconf to override applications.*/
1018    if (dri2_dpy->config)
1019       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1020                                      "vblank_mode", &vblank_mode);
1021    switch (vblank_mode) {
1022    case DRI_CONF_VBLANK_NEVER:
1023       dri2_dpy->min_swap_interval = 0;
1024       dri2_dpy->max_swap_interval = 0;
1025       dri2_dpy->default_swap_interval = 0;
1026       break;
1027    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1028       dri2_dpy->min_swap_interval = 1;
1029       dri2_dpy->max_swap_interval = max_swap_interval;
1030       dri2_dpy->default_swap_interval = 1;
1031       break;
1032    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1033       dri2_dpy->min_swap_interval = 0;
1034       dri2_dpy->max_swap_interval = max_swap_interval;
1035       dri2_dpy->default_swap_interval = 0;
1036       break;
1037    default:
1038    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1039       dri2_dpy->min_swap_interval = 0;
1040       dri2_dpy->max_swap_interval = max_swap_interval;
1041       dri2_dpy->default_swap_interval = 1;
1042       break;
1043    }
1044 }
1045
1046 /* All platforms but DRM call this function to create the screen and populate
1047  * the driver_configs. DRM inherits that information from its display - GBM.
1048  */
1049 EGLBoolean
1050 dri2_create_screen(_EGLDisplay *disp)
1051 {
1052    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1053
1054    if (dri2_dpy->image_driver) {
1055       dri2_dpy->dri_screen =
1056          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
1057                                                   dri2_dpy->loader_extensions,
1058                                                   dri2_dpy->driver_extensions,
1059                                                   &dri2_dpy->driver_configs,
1060                                                   disp);
1061    } else if (dri2_dpy->dri2) {
1062       if (dri2_dpy->dri2->base.version >= 4) {
1063          dri2_dpy->dri_screen =
1064             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
1065                                              dri2_dpy->loader_extensions,
1066                                              dri2_dpy->driver_extensions,
1067                                              &dri2_dpy->driver_configs, disp);
1068       } else {
1069          dri2_dpy->dri_screen =
1070             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
1071                                             dri2_dpy->loader_extensions,
1072                                             &dri2_dpy->driver_configs, disp);
1073       }
1074    } else {
1075       assert(dri2_dpy->swrast);
1076       if (dri2_dpy->swrast->base.version >= 4) {
1077          dri2_dpy->dri_screen =
1078             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
1079                                                dri2_dpy->driver_extensions,
1080                                                &dri2_dpy->driver_configs, disp);
1081       } else {
1082          dri2_dpy->dri_screen =
1083             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
1084                                               &dri2_dpy->driver_configs, disp);
1085       }
1086    }
1087
1088    if (dri2_dpy->dri_screen == NULL) {
1089       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
1090       return EGL_FALSE;
1091    }
1092
1093    dri2_dpy->own_dri_screen = true;
1094    return EGL_TRUE;
1095 }
1096
1097 EGLBoolean
1098 dri2_setup_extensions(_EGLDisplay *disp)
1099 {
1100    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1101    const struct dri2_extension_match *mandatory_core_extensions;
1102    const __DRIextension **extensions;
1103
1104    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
1105
1106    if (dri2_dpy->image_driver || dri2_dpy->dri2)
1107       mandatory_core_extensions = dri2_core_extensions;
1108    else
1109       mandatory_core_extensions = swrast_core_extensions;
1110
1111    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
1112       return EGL_FALSE;
1113
1114 #ifdef HAVE_DRI3_MODIFIERS
1115    dri2_dpy->multibuffers_available =
1116       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
1117                                             dri2_dpy->dri3_minor_version >= 2)) &&
1118       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
1119                                                dri2_dpy->present_minor_version >= 2)) &&
1120       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
1121 #endif
1122
1123    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
1124    return EGL_TRUE;
1125 }
1126
1127 /**
1128  * Called via eglInitialize(), drv->Initialize().
1129  *
1130  * This must be guaranteed to be called exactly once, even if eglInitialize is
1131  * called many times (without a eglTerminate in between).
1132  */
1133 static EGLBoolean
1134 dri2_initialize(_EGLDisplay *disp)
1135 {
1136    EGLBoolean ret = EGL_FALSE;
1137    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1138
1139    /* In the case where the application calls eglMakeCurrent(context1),
1140     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
1141     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
1142     * initialized, as we need it to be able to free context1 correctly.
1143     *
1144     * It would probably be safest to forcibly release the display with
1145     * dri2_display_release, to make sure the display is reinitialized correctly.
1146     * However, the EGL spec states that we need to keep a reference to the
1147     * current context (so we cannot call dri2_make_current(NULL)), and therefore
1148     * we would leak context1 as we would be missing the old display connection
1149     * to free it up correctly.
1150     */
1151    if (dri2_dpy) {
1152       dri2_dpy->ref_count++;
1153       return EGL_TRUE;
1154    }
1155
1156    loader_set_logger(_eglLog);
1157
1158    switch (disp->Platform) {
1159    case _EGL_PLATFORM_SURFACELESS:
1160       ret = dri2_initialize_surfaceless(disp);
1161       break;
1162    case _EGL_PLATFORM_DEVICE:
1163       ret = dri2_initialize_device(disp);
1164       break;
1165    case _EGL_PLATFORM_X11:
1166    case _EGL_PLATFORM_XCB:
1167       ret = dri2_initialize_x11(disp);
1168       break;
1169    case _EGL_PLATFORM_DRM:
1170       ret = dri2_initialize_drm(disp);
1171       break;
1172    case _EGL_PLATFORM_WAYLAND:
1173       ret = dri2_initialize_wayland(disp);
1174       break;
1175    case _EGL_PLATFORM_ANDROID:
1176       ret = dri2_initialize_android(disp);
1177       break;
1178    default:
1179       unreachable("Callers ensure we cannot get here.");
1180       return EGL_FALSE;
1181    }
1182
1183    if (!ret)
1184       return EGL_FALSE;
1185
1186    dri2_dpy = dri2_egl_display(disp);
1187    dri2_dpy->ref_count++;
1188
1189    return EGL_TRUE;
1190 }
1191
1192 /**
1193  * Decrement display reference count, and free up display if necessary.
1194  */
1195 static void
1196 dri2_display_release(_EGLDisplay *disp)
1197 {
1198    struct dri2_egl_display *dri2_dpy;
1199
1200    if (!disp)
1201       return;
1202
1203    dri2_dpy = dri2_egl_display(disp);
1204
1205    assert(dri2_dpy->ref_count > 0);
1206    dri2_dpy->ref_count--;
1207
1208    if (dri2_dpy->ref_count > 0)
1209       return;
1210
1211    _eglCleanupDisplay(disp);
1212    dri2_display_destroy(disp);
1213 }
1214
1215 void
1216 dri2_display_destroy(_EGLDisplay *disp)
1217 {
1218    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1219
1220    if (dri2_dpy->own_dri_screen) {
1221       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
1222          dri2_dpy->vtbl->close_screen_notify(disp);
1223       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1224    }
1225    if (dri2_dpy->fd >= 0)
1226       close(dri2_dpy->fd);
1227
1228    /* Don't dlclose the driver when building with the address sanitizer, so you
1229     * get good symbols from the leak reports.
1230     */
1231 #if !BUILT_WITH_ASAN || defined(NDEBUG)
1232    if (dri2_dpy->driver)
1233       dlclose(dri2_dpy->driver);
1234 #endif
1235
1236    free(dri2_dpy->driver_name);
1237
1238 #ifdef HAVE_WAYLAND_PLATFORM
1239    free(dri2_dpy->device_name);
1240 #endif
1241
1242    switch (disp->Platform) {
1243    case _EGL_PLATFORM_X11:
1244       dri2_teardown_x11(dri2_dpy);
1245       break;
1246    case _EGL_PLATFORM_DRM:
1247       dri2_teardown_drm(dri2_dpy);
1248       break;
1249    case _EGL_PLATFORM_WAYLAND:
1250       dri2_teardown_wayland(dri2_dpy);
1251       break;
1252    default:
1253       /* TODO: add teardown for other platforms */
1254       break;
1255    }
1256
1257    /* The drm platform does not create the screen/driver_configs but reuses
1258     * the ones from the gbm device. As such the gbm itself is responsible
1259     * for the cleanup.
1260     */
1261    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1262       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1263          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1264       free(dri2_dpy->driver_configs);
1265    }
1266    free(dri2_dpy);
1267    disp->DriverData = NULL;
1268 }
1269
1270 __DRIbuffer *
1271 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1272                                     unsigned int att, unsigned int format)
1273 {
1274    struct dri2_egl_display *dri2_dpy =
1275       dri2_egl_display(dri2_surf->base.Resource.Display);
1276
1277    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1278       return NULL;
1279
1280    if (!dri2_surf->local_buffers[att]) {
1281       dri2_surf->local_buffers[att] =
1282          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1283                                         dri2_surf->base.Width, dri2_surf->base.Height);
1284    }
1285
1286    return dri2_surf->local_buffers[att];
1287 }
1288
1289 void
1290 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1291 {
1292    struct dri2_egl_display *dri2_dpy =
1293       dri2_egl_display(dri2_surf->base.Resource.Display);
1294
1295    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1296       if (dri2_surf->local_buffers[i]) {
1297          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1298                                        dri2_surf->local_buffers[i]);
1299          dri2_surf->local_buffers[i] = NULL;
1300       }
1301    }
1302 }
1303
1304 /**
1305  * Called via eglTerminate(), drv->Terminate().
1306  *
1307  * This must be guaranteed to be called exactly once, even if eglTerminate is
1308  * called many times (without a eglInitialize in between).
1309  */
1310 static EGLBoolean
1311 dri2_terminate(_EGLDisplay *disp)
1312 {
1313    /* Release all non-current Context/Surfaces. */
1314    _eglReleaseDisplayResources(disp);
1315
1316    dri2_display_release(disp);
1317
1318    return EGL_TRUE;
1319 }
1320
1321 /**
1322  * Set the error code after a call to
1323  * dri2_egl_display::dri2::createContextAttribs.
1324  */
1325 static void
1326 dri2_create_context_attribs_error(int dri_error)
1327 {
1328    EGLint egl_error;
1329
1330    switch (dri_error) {
1331    case __DRI_CTX_ERROR_SUCCESS:
1332       return;
1333
1334    case __DRI_CTX_ERROR_NO_MEMORY:
1335       egl_error = EGL_BAD_ALLOC;
1336       break;
1337
1338   /* From the EGL_KHR_create_context spec, section "Errors":
1339    *
1340    *   * If <config> does not support a client API context compatible
1341    *     with the requested API major and minor version, [...] context flags,
1342    *     and context reset notification behavior (for client API types where
1343    *     these attributes are supported), then an EGL_BAD_MATCH error is
1344    *     generated.
1345    *
1346    *   * If an OpenGL ES context is requested and the values for
1347    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1348    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1349    *     is not defined, than an EGL_BAD_MATCH error is generated.
1350    *
1351    *   * If an OpenGL context is requested, the requested version is
1352    *     greater than 3.2, and the value for attribute
1353    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1354    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1355    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1356    *     one of these bits set; or if the implementation does not support
1357    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1358    */
1359    case __DRI_CTX_ERROR_BAD_API:
1360    case __DRI_CTX_ERROR_BAD_VERSION:
1361    case __DRI_CTX_ERROR_BAD_FLAG:
1362       egl_error = EGL_BAD_MATCH;
1363       break;
1364
1365   /* From the EGL_KHR_create_context spec, section "Errors":
1366    *
1367    *   * If an attribute name or attribute value in <attrib_list> is not
1368    *     recognized (including unrecognized bits in bitmask attributes),
1369    *     then an EGL_BAD_ATTRIBUTE error is generated."
1370    */
1371    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1372    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1373       egl_error = EGL_BAD_ATTRIBUTE;
1374       break;
1375
1376    default:
1377       assert(!"unknown dri_error code");
1378       egl_error = EGL_BAD_MATCH;
1379       break;
1380    }
1381
1382    _eglError(egl_error, "dri2_create_context");
1383 }
1384
1385 static bool
1386 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1387                           struct dri2_egl_display *dri2_dpy,
1388                           uint32_t *ctx_attribs,
1389                           unsigned *num_attribs)
1390 {
1391    int pos = 0;
1392
1393    assert(*num_attribs >= NUM_ATTRIBS);
1394
1395    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1396    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1397    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1398    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1399
1400    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1401       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1402        * extension, don't even try to send it the robust-access flag.
1403        * It may explode.  Instead, generate the required EGL error here.
1404        */
1405       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1406             && !dri2_dpy->robustness) {
1407          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1408          return false;
1409       }
1410
1411       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1412       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1413          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1414    }
1415
1416    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1417       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1418        * extension, don't even try to send it a reset strategy.  It may
1419        * explode.  Instead, generate the required EGL error here.
1420        */
1421       if (!dri2_dpy->robustness) {
1422          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1423          return false;
1424       }
1425
1426       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1427       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1428    }
1429
1430    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1431       unsigned val;
1432
1433       switch (dri2_ctx->base.ContextPriority) {
1434       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1435          val = __DRI_CTX_PRIORITY_HIGH;
1436          break;
1437       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1438          val = __DRI_CTX_PRIORITY_MEDIUM;
1439          break;
1440       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1441          val = __DRI_CTX_PRIORITY_LOW;
1442          break;
1443       default:
1444          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1445          return false;
1446       }
1447
1448       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1449       ctx_attribs[pos++] = val;
1450    }
1451
1452    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1453       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1454       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1455    }
1456
1457    *num_attribs = pos;
1458
1459    return true;
1460 }
1461
1462 /**
1463  * Called via eglCreateContext(), drv->CreateContext().
1464  */
1465 static _EGLContext *
1466 dri2_create_context(_EGLDisplay *disp, _EGLConfig *conf,
1467                     _EGLContext *share_list, const EGLint *attrib_list)
1468 {
1469    struct dri2_egl_context *dri2_ctx;
1470    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1471    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1472    __DRIcontext *shared =
1473       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1474    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1475    const __DRIconfig *dri_config;
1476    int api;
1477    unsigned error;
1478    unsigned num_attribs = NUM_ATTRIBS;
1479    uint32_t ctx_attribs[NUM_ATTRIBS];
1480
1481    dri2_ctx = malloc(sizeof *dri2_ctx);
1482    if (!dri2_ctx) {
1483       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1484       return NULL;
1485    }
1486
1487    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1488       goto cleanup;
1489
1490    /* The EGL_EXT_create_context_robustness spec says:
1491     *
1492     *    "Add to the eglCreateContext context creation errors: [...]
1493     *
1494     *     * If the reset notification behavior of <share_context> and the
1495     *       newly created context are different then an EGL_BAD_MATCH error is
1496     *       generated."
1497     */
1498    if (share_list && share_list->ResetNotificationStrategy !=
1499                      dri2_ctx->base.ResetNotificationStrategy) {
1500       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1501       goto cleanup;
1502    }
1503
1504    /* The EGL_KHR_create_context_no_error spec says:
1505     *
1506     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1507     *    used to create <share_context> does not match the value of
1508     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1509     */
1510    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1511       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1512       goto cleanup;
1513    }
1514
1515    switch (dri2_ctx->base.ClientAPI) {
1516    case EGL_OPENGL_ES_API:
1517       switch (dri2_ctx->base.ClientMajorVersion) {
1518       case 1:
1519          api = __DRI_API_GLES;
1520          break;
1521       case 2:
1522          api = __DRI_API_GLES2;
1523          break;
1524       case 3:
1525          api = __DRI_API_GLES3;
1526          break;
1527       default:
1528          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1529          free(dri2_ctx);
1530          return NULL;
1531       }
1532       break;
1533    case EGL_OPENGL_API:
1534       if ((dri2_ctx->base.ClientMajorVersion >= 4
1535            || (dri2_ctx->base.ClientMajorVersion == 3
1536                && dri2_ctx->base.ClientMinorVersion >= 2))
1537           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1538          api = __DRI_API_OPENGL_CORE;
1539       else if (dri2_ctx->base.ClientMajorVersion == 3 &&
1540                dri2_ctx->base.ClientMinorVersion == 1)
1541          api = __DRI_API_OPENGL_CORE;
1542       else
1543          api = __DRI_API_OPENGL;
1544       break;
1545    default:
1546       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1547       free(dri2_ctx);
1548       return NULL;
1549    }
1550
1551    if (conf != NULL) {
1552       /* The config chosen here isn't necessarily
1553        * used for surfaces later.
1554        * A pixmap surface will use the single config.
1555        * This opportunity depends on disabling the
1556        * doubleBufferMode check in
1557        * src/mesa/main/context.c:check_compatible()
1558        */
1559       if (dri2_config->dri_config[1][0])
1560          dri_config = dri2_config->dri_config[1][0];
1561       else
1562          dri_config = dri2_config->dri_config[0][0];
1563    }
1564    else
1565       dri_config = NULL;
1566
1567    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1568                                   &num_attribs))
1569       goto cleanup;
1570
1571    if (dri2_dpy->image_driver) {
1572       dri2_ctx->dri_context =
1573          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1574                                                       api,
1575                                                       dri_config,
1576                                                       shared,
1577                                                       num_attribs / 2,
1578                                                       ctx_attribs,
1579                                                       & error,
1580                                                       dri2_ctx);
1581       dri2_create_context_attribs_error(error);
1582    } else if (dri2_dpy->dri2) {
1583       if (dri2_dpy->dri2->base.version >= 3) {
1584          dri2_ctx->dri_context =
1585             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1586                                                  api,
1587                                                  dri_config,
1588                                                  shared,
1589                                                  num_attribs / 2,
1590                                                  ctx_attribs,
1591                                                  & error,
1592                                                  dri2_ctx);
1593          dri2_create_context_attribs_error(error);
1594       } else {
1595          dri2_ctx->dri_context =
1596             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1597                                                    api,
1598                                                    dri_config,
1599                                                    shared,
1600                                                    dri2_ctx);
1601       }
1602    } else {
1603       assert(dri2_dpy->swrast);
1604       if (dri2_dpy->swrast->base.version >= 3) {
1605          dri2_ctx->dri_context =
1606             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1607                                                    api,
1608                                                    dri_config,
1609                                                    shared,
1610                                                    num_attribs / 2,
1611                                                    ctx_attribs,
1612                                                    & error,
1613                                                    dri2_ctx);
1614          dri2_create_context_attribs_error(error);
1615       } else {
1616          dri2_ctx->dri_context =
1617             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1618                                                      api,
1619                                                      dri_config,
1620                                                      shared,
1621                                                      dri2_ctx);
1622       }
1623    }
1624
1625    if (!dri2_ctx->dri_context)
1626       goto cleanup;
1627
1628    return &dri2_ctx->base;
1629
1630  cleanup:
1631    free(dri2_ctx);
1632    return NULL;
1633 }
1634
1635 /**
1636  * Called via eglDestroyContext(), drv->DestroyContext().
1637  */
1638 static EGLBoolean
1639 dri2_destroy_context(_EGLDisplay *disp, _EGLContext *ctx)
1640 {
1641    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1642    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1643
1644    if (_eglPutContext(ctx)) {
1645       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1646       free(dri2_ctx);
1647    }
1648
1649    return EGL_TRUE;
1650 }
1651
1652 EGLBoolean
1653 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1654         _EGLConfig *conf, const EGLint *attrib_list,
1655         EGLBoolean enable_out_fence, void *native_surface)
1656 {
1657    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1658    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1659
1660    dri2_surf->out_fence_fd = -1;
1661    dri2_surf->enable_out_fence = false;
1662    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1663        dri2_dpy->fence->get_capabilities &&
1664        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1665         __DRI_FENCE_CAP_NATIVE_FD)) {
1666       dri2_surf->enable_out_fence = enable_out_fence;
1667    }
1668
1669    return _eglInitSurface(surf, disp, type, conf, attrib_list, native_surface);
1670 }
1671
1672 static void
1673 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1674 {
1675    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1676
1677    if (dri2_surf->out_fence_fd >= 0)
1678       close(dri2_surf->out_fence_fd);
1679
1680    dri2_surf->out_fence_fd = fence_fd;
1681 }
1682
1683 void
1684 dri2_fini_surface(_EGLSurface *surf)
1685 {
1686    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1687
1688    dri2_surface_set_out_fence_fd(surf, -1);
1689    dri2_surf->enable_out_fence = false;
1690 }
1691
1692 static EGLBoolean
1693 dri2_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
1694 {
1695    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1696
1697    if (!_eglPutSurface(surf))
1698       return EGL_TRUE;
1699
1700    return dri2_dpy->vtbl->destroy_surface(disp, surf);
1701 }
1702
1703 static void
1704 dri2_surf_update_fence_fd(_EGLContext *ctx,
1705                           _EGLDisplay *disp, _EGLSurface *surf)
1706 {
1707    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1708    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1709    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1710    int fence_fd = -1;
1711    void *fence;
1712
1713    if (!dri2_surf->enable_out_fence)
1714       return;
1715
1716    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1717    if (fence) {
1718       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1719                                                fence);
1720       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1721    }
1722    dri2_surface_set_out_fence_fd(surf, fence_fd);
1723 }
1724
1725 EGLBoolean
1726 dri2_create_drawable(struct dri2_egl_display *dri2_dpy,
1727                      const __DRIconfig *config,
1728                      struct dri2_egl_surface *dri2_surf,
1729                      void *loaderPrivate)
1730 {
1731    __DRIcreateNewDrawableFunc createNewDrawable;
1732
1733    if (dri2_dpy->image_driver)
1734       createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
1735    else if (dri2_dpy->dri2)
1736       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
1737    else if (dri2_dpy->swrast)
1738       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
1739    else
1740       return _eglError(EGL_BAD_ALLOC, "no createNewDrawable");
1741
1742    dri2_surf->dri_drawable = createNewDrawable(dri2_dpy->dri_screen,
1743                                                config, loaderPrivate);
1744    if (dri2_surf->dri_drawable == NULL)
1745       return _eglError(EGL_BAD_ALLOC, "createNewDrawable");
1746
1747    return EGL_TRUE;
1748 }
1749
1750 /**
1751  * Called via eglMakeCurrent(), drv->MakeCurrent().
1752  */
1753 static EGLBoolean
1754 dri2_make_current(_EGLDisplay *disp, _EGLSurface *dsurf,
1755                   _EGLSurface *rsurf, _EGLContext *ctx)
1756 {
1757    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1758    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1759    _EGLDisplay *old_disp = NULL;
1760    struct dri2_egl_display *old_dri2_dpy = NULL;
1761    _EGLContext *old_ctx;
1762    _EGLSurface *old_dsurf, *old_rsurf;
1763    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1764    __DRIdrawable *ddraw, *rdraw;
1765    __DRIcontext *cctx;
1766    EGLint egl_error = EGL_SUCCESS;
1767
1768    if (!dri2_dpy)
1769       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1770
1771    /* make new bindings, set the EGL error otherwise */
1772    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
1773       return EGL_FALSE;
1774
1775    if (old_ctx) {
1776       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1777       old_disp = old_ctx->Resource.Display;
1778       old_dri2_dpy = dri2_egl_display(old_disp);
1779
1780       /* flush before context switch */
1781       dri2_gl_flush();
1782
1783       if (old_dsurf)
1784          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1785
1786       /* Disable shared buffer mode */
1787       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1788           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1789          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1790       }
1791
1792       dri2_dpy->core->unbindContext(old_cctx);
1793    }
1794
1795    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1796    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1797    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1798
1799    if (cctx || ddraw || rdraw) {
1800       if (!dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1801          _EGLContext *tmp_ctx;
1802
1803          /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1804           * setting the error to EGL_BAD_MATCH is surely better than leaving it
1805           * as EGL_SUCCESS.
1806           */
1807          egl_error = EGL_BAD_MATCH;
1808
1809          /* undo the previous _eglBindContext */
1810          _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1811          assert(&dri2_ctx->base == ctx &&
1812                 tmp_dsurf == dsurf &&
1813                 tmp_rsurf == rsurf);
1814
1815          _eglPutSurface(dsurf);
1816          _eglPutSurface(rsurf);
1817          _eglPutContext(ctx);
1818
1819          _eglPutSurface(old_dsurf);
1820          _eglPutSurface(old_rsurf);
1821          _eglPutContext(old_ctx);
1822
1823          ddraw = (old_dsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_dsurf) : NULL;
1824          rdraw = (old_rsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_rsurf) : NULL;
1825          cctx = (old_ctx) ? dri2_egl_context(old_ctx)->dri_context : NULL;
1826
1827          /* undo the previous dri2_dpy->core->unbindContext */
1828          if (dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1829             if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1830                 old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1831                old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1832             }
1833
1834             return _eglError(egl_error, "eglMakeCurrent");
1835          }
1836
1837          /* We cannot restore the same state as it was before calling
1838           * eglMakeCurrent() and the spec isn't clear about what to do. We
1839           * can prevent EGL from calling into the DRI driver with no DRI
1840           * context bound.
1841           */
1842          dsurf = rsurf = NULL;
1843          ctx = NULL;
1844
1845          _eglBindContext(ctx, dsurf, rsurf, &tmp_ctx, &tmp_dsurf, &tmp_rsurf);
1846          assert(tmp_ctx == old_ctx && tmp_dsurf == old_dsurf &&
1847                 tmp_rsurf == old_rsurf);
1848
1849          _eglLog(_EGL_WARNING, "DRI2: failed to rebind the previous context");
1850       } else {
1851          /* dri2_dpy->core->bindContext succeeded, so take a reference on the
1852           * dri2_dpy. This prevents dri2_dpy from being reinitialized when a
1853           * EGLDisplay is terminated and then initialized again while a
1854           * context is still bound. See dri2_intitialize() for a more in depth
1855           * explanation. */
1856          dri2_dpy->ref_count++;
1857       }
1858    }
1859
1860    dri2_destroy_surface(disp, old_dsurf);
1861    dri2_destroy_surface(disp, old_rsurf);
1862
1863    if (old_ctx) {
1864       dri2_destroy_context(disp, old_ctx);
1865       dri2_display_release(old_disp);
1866    }
1867
1868    if (egl_error != EGL_SUCCESS)
1869       return _eglError(egl_error, "eglMakeCurrent");
1870
1871    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1872        dri2_dpy->vtbl->set_shared_buffer_mode) {
1873       /* Always update the shared buffer mode. This is obviously needed when
1874        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1875        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1876        * case where external non-EGL API may have changed window's shared
1877        * buffer mode since we last saw it.
1878        */
1879       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1880       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1881    }
1882
1883    return EGL_TRUE;
1884 }
1885
1886 __DRIdrawable *
1887 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1888 {
1889    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1890
1891    return dri2_surf->dri_drawable;
1892 }
1893
1894 /*
1895  * Called from eglGetProcAddress() via drv->GetProcAddress().
1896  */
1897 static _EGLProc
1898 dri2_get_proc_address(const char *procname)
1899 {
1900    return _glapi_get_proc_address(procname);
1901 }
1902
1903 static _EGLSurface*
1904 dri2_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
1905                            void *native_window, const EGLint *attrib_list)
1906 {
1907    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1908    return dri2_dpy->vtbl->create_window_surface(disp, conf, native_window,
1909                                                 attrib_list);
1910 }
1911
1912 static _EGLSurface*
1913 dri2_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
1914                            void *native_pixmap, const EGLint *attrib_list)
1915 {
1916    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1917    if (!dri2_dpy->vtbl->create_pixmap_surface)
1918       return NULL;
1919    return dri2_dpy->vtbl->create_pixmap_surface(disp, conf, native_pixmap,
1920                                                 attrib_list);
1921 }
1922
1923 static _EGLSurface*
1924 dri2_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
1925                             const EGLint *attrib_list)
1926 {
1927    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1928    if (!dri2_dpy->vtbl->create_pbuffer_surface)
1929       return NULL;
1930    return dri2_dpy->vtbl->create_pbuffer_surface(disp, conf, attrib_list);
1931 }
1932
1933 static EGLBoolean
1934 dri2_swap_interval(_EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
1935 {
1936    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1937    if (!dri2_dpy->vtbl->swap_interval)
1938       return EGL_TRUE;
1939    return dri2_dpy->vtbl->swap_interval(disp, surf, interval);
1940 }
1941
1942 /**
1943  * Asks the client API to flush any rendering to the drawable so that we can
1944  * do our swapbuffers.
1945  */
1946 void
1947 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1948 {
1949    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1950    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1951
1952    if (dri2_dpy->flush) {
1953       if (dri2_dpy->flush->base.version >= 4) {
1954          /* We know there's a current context because:
1955           *
1956           *     "If surface is not bound to the calling thread’s current
1957           *      context, an EGL_BAD_SURFACE error is generated."
1958          */
1959          _EGLContext *ctx = _eglGetCurrentContext();
1960          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1961
1962          /* From the EGL 1.4 spec (page 52):
1963           *
1964           *     "The contents of ancillary buffers are always undefined
1965           *      after calling eglSwapBuffers."
1966           */
1967          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1968                                            dri_drawable,
1969                                            __DRI2_FLUSH_DRAWABLE |
1970                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1971                                            __DRI2_THROTTLE_SWAPBUFFER);
1972       } else {
1973          dri2_dpy->flush->flush(dri_drawable);
1974       }
1975    }
1976 }
1977
1978 static EGLBoolean
1979 dri2_swap_buffers(_EGLDisplay *disp, _EGLSurface *surf)
1980 {
1981    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1982    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1983    _EGLContext *ctx = _eglGetCurrentContext();
1984    EGLBoolean ret;
1985
1986    if (ctx && surf)
1987       dri2_surf_update_fence_fd(ctx, disp, surf);
1988    ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
1989
1990    /* SwapBuffers marks the end of the frame; reset the damage region for
1991     * use again next time.
1992     */
1993    if (ret && dri2_dpy->buffer_damage &&
1994        dri2_dpy->buffer_damage->set_damage_region)
1995       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
1996
1997    return ret;
1998 }
1999
2000 static EGLBoolean
2001 dri2_swap_buffers_with_damage(_EGLDisplay *disp, _EGLSurface *surf,
2002                               const EGLint *rects, EGLint n_rects)
2003 {
2004    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2005    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2006    _EGLContext *ctx = _eglGetCurrentContext();
2007    EGLBoolean ret;
2008
2009    if (ctx && surf)
2010       dri2_surf_update_fence_fd(ctx, disp, surf);
2011    if (dri2_dpy->vtbl->swap_buffers_with_damage)
2012       ret = dri2_dpy->vtbl->swap_buffers_with_damage(disp, surf,
2013                                                      rects, n_rects);
2014    else
2015       ret = dri2_dpy->vtbl->swap_buffers(disp, surf);
2016
2017    /* SwapBuffers marks the end of the frame; reset the damage region for
2018     * use again next time.
2019     */
2020    if (ret && dri2_dpy->buffer_damage &&
2021        dri2_dpy->buffer_damage->set_damage_region)
2022       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2023
2024    return ret;
2025 }
2026
2027 static EGLBoolean
2028 dri2_swap_buffers_region(_EGLDisplay *disp, _EGLSurface *surf,
2029                          EGLint numRects, const EGLint *rects)
2030 {
2031    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2032    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2033    EGLBoolean ret;
2034
2035    if (!dri2_dpy->vtbl->swap_buffers_region)
2036       return EGL_FALSE;
2037    ret = dri2_dpy->vtbl->swap_buffers_region(disp, surf, numRects, rects);
2038
2039    /* SwapBuffers marks the end of the frame; reset the damage region for
2040     * use again next time.
2041     */
2042    if (ret && dri2_dpy->buffer_damage &&
2043        dri2_dpy->buffer_damage->set_damage_region)
2044       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2045
2046    return ret;
2047 }
2048
2049 static EGLBoolean
2050 dri2_set_damage_region(_EGLDisplay *disp, _EGLSurface *surf,
2051                        EGLint *rects, EGLint n_rects)
2052 {
2053    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2054    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2055
2056    if (!dri2_dpy->buffer_damage || !dri2_dpy->buffer_damage->set_damage_region)
2057       return EGL_FALSE;
2058
2059    dri2_dpy->buffer_damage->set_damage_region(drawable, n_rects, rects);
2060    return EGL_TRUE;
2061 }
2062
2063 static EGLBoolean
2064 dri2_post_sub_buffer(_EGLDisplay *disp, _EGLSurface *surf,
2065                      EGLint x, EGLint y, EGLint width, EGLint height)
2066 {
2067    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2068    if (!dri2_dpy->vtbl->post_sub_buffer)
2069       return EGL_FALSE;
2070    return dri2_dpy->vtbl->post_sub_buffer(disp, surf, x, y, width, height);
2071 }
2072
2073 static EGLBoolean
2074 dri2_copy_buffers(_EGLDisplay *disp, _EGLSurface *surf, void *native_pixmap_target)
2075 {
2076    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2077    if (!dri2_dpy->vtbl->copy_buffers)
2078       return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
2079    return dri2_dpy->vtbl->copy_buffers(disp, surf, native_pixmap_target);
2080 }
2081
2082 static EGLint
2083 dri2_query_buffer_age(_EGLDisplay *disp, _EGLSurface *surf)
2084 {
2085    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2086    if (!dri2_dpy->vtbl->query_buffer_age)
2087       return 0;
2088    return dri2_dpy->vtbl->query_buffer_age(disp, surf);
2089 }
2090
2091 static EGLBoolean
2092 dri2_wait_client(_EGLDisplay *disp, _EGLContext *ctx)
2093 {
2094    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2095    _EGLSurface *surf = ctx->DrawSurface;
2096    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2097
2098    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
2099     * we need to copy fake to real here.*/
2100
2101    if (dri2_dpy->flush != NULL)
2102       dri2_dpy->flush->flush(dri_drawable);
2103
2104    return EGL_TRUE;
2105 }
2106
2107 static EGLBoolean
2108 dri2_wait_native(EGLint engine)
2109 {
2110    if (engine != EGL_CORE_NATIVE_ENGINE)
2111       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
2112    /* glXWaitX(); */
2113
2114    return EGL_TRUE;
2115 }
2116
2117 static EGLBoolean
2118 dri2_bind_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2119 {
2120    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2121    struct dri2_egl_context *dri2_ctx;
2122    _EGLContext *ctx;
2123    GLint format, target;
2124    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2125
2126    ctx = _eglGetCurrentContext();
2127    dri2_ctx = dri2_egl_context(ctx);
2128
2129    if (!_eglBindTexImage(disp, surf, buffer))
2130       return EGL_FALSE;
2131
2132    switch (surf->TextureFormat) {
2133    case EGL_TEXTURE_RGB:
2134       format = __DRI_TEXTURE_FORMAT_RGB;
2135       break;
2136    case EGL_TEXTURE_RGBA:
2137       format = __DRI_TEXTURE_FORMAT_RGBA;
2138       break;
2139    default:
2140       assert(!"Unexpected texture format in dri2_bind_tex_image()");
2141       format = __DRI_TEXTURE_FORMAT_RGBA;
2142    }
2143
2144    switch (surf->TextureTarget) {
2145    case EGL_TEXTURE_2D:
2146       target = GL_TEXTURE_2D;
2147       break;
2148    default:
2149       target = GL_TEXTURE_2D;
2150       assert(!"Unexpected texture target in dri2_bind_tex_image()");
2151    }
2152
2153    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
2154                                        target, format,
2155                                        dri_drawable);
2156
2157    return EGL_TRUE;
2158 }
2159
2160 static EGLBoolean
2161 dri2_release_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2162 {
2163    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2164    struct dri2_egl_context *dri2_ctx;
2165    _EGLContext *ctx;
2166    GLint  target;
2167    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2168
2169    ctx = _eglGetCurrentContext();
2170    dri2_ctx = dri2_egl_context(ctx);
2171
2172    if (!_eglReleaseTexImage(disp, surf, buffer))
2173       return EGL_FALSE;
2174
2175    switch (surf->TextureTarget) {
2176    case EGL_TEXTURE_2D:
2177       target = GL_TEXTURE_2D;
2178       break;
2179    default:
2180       assert(!"missing texture target");
2181    }
2182
2183    if (dri2_dpy->tex_buffer->base.version >= 3 &&
2184        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
2185       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
2186                                              target, dri_drawable);
2187    }
2188
2189    return EGL_TRUE;
2190 }
2191
2192 static _EGLImage*
2193 dri2_create_image(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
2194                   EGLClientBuffer buffer, const EGLint *attr_list)
2195 {
2196    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2197    return dri2_dpy->vtbl->create_image(disp, ctx, target, buffer,
2198                                        attr_list);
2199 }
2200
2201 _EGLImage *
2202 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
2203 {
2204    struct dri2_egl_image *dri2_img;
2205
2206    if (dri_image == NULL) {
2207       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2208       return NULL;
2209    }
2210
2211    dri2_img = malloc(sizeof *dri2_img);
2212    if (!dri2_img) {
2213       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2214       return NULL;
2215    }
2216
2217    _eglInitImage(&dri2_img->base, disp);
2218
2219    dri2_img->dri_image = dri_image;
2220
2221    return &dri2_img->base;
2222 }
2223
2224 /**
2225  * Translate a DRI Image extension error code into an EGL error code.
2226  */
2227 static EGLint
2228 egl_error_from_dri_image_error(int dri_error)
2229 {
2230    switch (dri_error) {
2231    case __DRI_IMAGE_ERROR_SUCCESS:
2232       return EGL_SUCCESS;
2233    case __DRI_IMAGE_ERROR_BAD_ALLOC:
2234       return EGL_BAD_ALLOC;
2235    case __DRI_IMAGE_ERROR_BAD_MATCH:
2236       return EGL_BAD_MATCH;
2237    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
2238       return EGL_BAD_PARAMETER;
2239    case __DRI_IMAGE_ERROR_BAD_ACCESS:
2240       return EGL_BAD_ACCESS;
2241    default:
2242       assert(!"unknown dri_error code");
2243       return EGL_BAD_ALLOC;
2244    }
2245 }
2246
2247 static _EGLImage *
2248 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
2249                                    EGLClientBuffer buffer,
2250                                    const EGLint *attr_list)
2251 {
2252    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2253    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2254    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
2255    __DRIimage *dri_image;
2256
2257    if (renderbuffer == 0) {
2258       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2259       return EGL_NO_IMAGE_KHR;
2260    }
2261
2262    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
2263       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2264       return EGL_NO_IMAGE_KHR;
2265    }
2266
2267    if (dri2_dpy->image->base.version >= 17 &&
2268        dri2_dpy->image->createImageFromRenderbuffer2) {
2269       unsigned error = ~0;
2270
2271       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
2272                dri2_ctx->dri_context, renderbuffer, NULL, &error);
2273
2274       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
2275
2276       if (!dri_image) {
2277          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
2278          return EGL_NO_IMAGE_KHR;
2279       }
2280    } else {
2281       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
2282                dri2_ctx->dri_context, renderbuffer, NULL);
2283       if (!dri_image) {
2284          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2285          return EGL_NO_IMAGE_KHR;
2286       }
2287    }
2288
2289    return dri2_create_image_from_dri(disp, dri_image);
2290 }
2291
2292 #ifdef HAVE_WAYLAND_PLATFORM
2293
2294 /* This structure describes how a wl_buffer maps to one or more
2295  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
2296  * offsets and strides of the planes in the buffer.  This table maps a
2297  * wl_drm format code to a description of the planes in the buffer
2298  * that lets us create a __DRIimage for each of the planes. */
2299
2300 static const struct wl_drm_components_descriptor {
2301    uint32_t dri_components;
2302    EGLint components;
2303    int nplanes;
2304 } wl_drm_components[] = {
2305    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
2306    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
2307    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
2308    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
2309    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
2310 };
2311
2312 static _EGLImage *
2313 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2314                                     EGLClientBuffer _buffer,
2315                                     const EGLint *attr_list)
2316 {
2317    struct wl_drm_buffer *buffer;
2318    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2319    const struct wl_drm_components_descriptor *f;
2320    __DRIimage *dri_image;
2321    _EGLImageAttribs attrs;
2322    int32_t plane;
2323
2324    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
2325                                    (struct wl_resource *) _buffer);
2326    if (!buffer)
2327        return NULL;
2328
2329    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2330       return NULL;
2331
2332    plane = attrs.PlaneWL;
2333    f = buffer->driver_format;
2334    if (plane < 0 || plane >= f->nplanes) {
2335       _eglError(EGL_BAD_PARAMETER,
2336                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2337       return NULL;
2338    }
2339
2340    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2341    if (dri_image == NULL && plane == 0)
2342       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
2343    if (dri_image == NULL) {
2344       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2345       return NULL;
2346    }
2347
2348    return dri2_create_image_from_dri(disp, dri_image);
2349 }
2350 #endif
2351
2352 static EGLBoolean
2353 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
2354                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2355                               EGLuint64KHR *sbc)
2356 {
2357    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2358    if (!dri2_dpy->vtbl->get_sync_values)
2359       return EGL_FALSE;
2360    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
2361 }
2362
2363 /**
2364  * Set the error code after a call to
2365  * dri2_egl_image::dri_image::createImageFromTexture.
2366  */
2367 static void
2368 dri2_create_image_khr_texture_error(int dri_error)
2369 {
2370    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2371
2372    if (egl_error != EGL_SUCCESS)
2373       _eglError(egl_error, "dri2_create_image_khr_texture");
2374 }
2375
2376 static _EGLImage *
2377 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2378                                    EGLenum target,
2379                                    EGLClientBuffer buffer,
2380                                    const EGLint *attr_list)
2381 {
2382    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2383    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2384    struct dri2_egl_image *dri2_img;
2385    GLuint texture = (GLuint) (uintptr_t) buffer;
2386    _EGLImageAttribs attrs;
2387    GLuint depth;
2388    GLenum gl_target;
2389    unsigned error;
2390
2391    if (texture == 0) {
2392       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2393       return EGL_NO_IMAGE_KHR;
2394    }
2395
2396    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2397       return EGL_NO_IMAGE_KHR;
2398
2399    switch (target) {
2400    case EGL_GL_TEXTURE_2D_KHR:
2401       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2402          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2403          return EGL_NO_IMAGE_KHR;
2404       }
2405       depth = 0;
2406       gl_target = GL_TEXTURE_2D;
2407       break;
2408    case EGL_GL_TEXTURE_3D_KHR:
2409       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2410          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2411          return EGL_NO_IMAGE_KHR;
2412       }
2413
2414       depth = attrs.GLTextureZOffset;
2415       gl_target = GL_TEXTURE_3D;
2416       break;
2417    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2418    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2419    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2420    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2421    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2422    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2423       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2424          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2425          return EGL_NO_IMAGE_KHR;
2426       }
2427
2428       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2429       gl_target = GL_TEXTURE_CUBE_MAP;
2430       break;
2431    default:
2432       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2433       return EGL_NO_IMAGE_KHR;
2434    }
2435
2436    dri2_img = malloc(sizeof *dri2_img);
2437    if (!dri2_img) {
2438       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2439       return EGL_NO_IMAGE_KHR;
2440    }
2441
2442    _eglInitImage(&dri2_img->base, disp);
2443
2444    dri2_img->dri_image =
2445       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2446                                               gl_target,
2447                                               texture,
2448                                               depth,
2449                                               attrs.GLTextureLevel,
2450                                               &error,
2451                                               NULL);
2452    dri2_create_image_khr_texture_error(error);
2453
2454    if (!dri2_img->dri_image) {
2455       free(dri2_img);
2456       return EGL_NO_IMAGE_KHR;
2457    }
2458    return &dri2_img->base;
2459 }
2460
2461 static EGLBoolean
2462 dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
2463                    EGLint attribute, EGLint *value)
2464 {
2465    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2466    if (!dri2_dpy->vtbl->query_surface)
2467       return _eglQuerySurface(disp, surf, attribute, value);
2468    return dri2_dpy->vtbl->query_surface(disp, surf, attribute, value);
2469 }
2470
2471 static struct wl_buffer*
2472 dri2_create_wayland_buffer_from_image(_EGLDisplay *disp, _EGLImage *img)
2473 {
2474    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2475    if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
2476       return NULL;
2477    return dri2_dpy->vtbl->create_wayland_buffer_from_image(disp, img);
2478 }
2479
2480 #ifdef HAVE_LIBDRM
2481 static _EGLImage *
2482 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2483                                   EGLClientBuffer buffer, const EGLint *attr_list)
2484 {
2485    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2486    EGLint format, name, pitch;
2487    _EGLImageAttribs attrs;
2488    __DRIimage *dri_image;
2489
2490    name = (EGLint) (uintptr_t) buffer;
2491
2492    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2493       return NULL;
2494
2495    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2496        attrs.DRMBufferStrideMESA <= 0) {
2497       _eglError(EGL_BAD_PARAMETER,
2498                 "bad width, height or stride");
2499       return NULL;
2500    }
2501
2502    switch (attrs.DRMBufferFormatMESA) {
2503    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2504       format = __DRI_IMAGE_FORMAT_ARGB8888;
2505       pitch = attrs.DRMBufferStrideMESA;
2506       break;
2507    default:
2508       _eglError(EGL_BAD_PARAMETER,
2509                 "dri2_create_image_khr: unsupported pixmap depth");
2510       return NULL;
2511    }
2512
2513    dri_image =
2514       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2515                                            attrs.Width,
2516                                            attrs.Height,
2517                                            format,
2518                                            name,
2519                                            pitch,
2520                                            NULL);
2521
2522    return dri2_create_image_from_dri(disp, dri_image);
2523 }
2524
2525 static EGLBoolean
2526 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2527 {
2528    /**
2529      * The spec says:
2530      *
2531      * "Required attributes and their values are as follows:
2532      *
2533      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2534      *
2535      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2536      *    by drm_fourcc.h and used as the pixel_format parameter of the
2537      *    drm_mode_fb_cmd2 ioctl."
2538      *
2539      * and
2540      *
2541      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2542      *    incomplete, EGL_BAD_PARAMETER is generated."
2543      */
2544    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2545        !attrs->DMABufFourCC.IsPresent)
2546       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2547
2548    /**
2549     * Also:
2550     *
2551     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2552     *  specified for a plane's pitch or offset isn't supported by EGL,
2553     *  EGL_BAD_ACCESS is generated."
2554     */
2555    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2556       if (attrs->DMABufPlanePitches[i].IsPresent &&
2557           attrs->DMABufPlanePitches[i].Value <= 0)
2558          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2559    }
2560
2561    /**
2562     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2563     * attribute values may be given.
2564     *
2565     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2566     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2567     */
2568    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2569       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2570           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2571          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2572    }
2573
2574    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2575     * mandate it, we only accept the same modifier across all planes. */
2576    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2577       if (attrs->DMABufPlaneFds[i].IsPresent) {
2578          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2579                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2580              (attrs->DMABufPlaneModifiersLo[0].Value !=
2581                attrs->DMABufPlaneModifiersLo[i].Value) ||
2582              (attrs->DMABufPlaneModifiersHi[0].Value !=
2583                attrs->DMABufPlaneModifiersHi[i].Value))
2584             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2585       }
2586    }
2587
2588    return EGL_TRUE;
2589 }
2590
2591 /* Returns the total number of planes for the format or zero if it isn't a
2592  * valid fourcc format.
2593  */
2594 static unsigned
2595 dri2_num_fourcc_format_planes(EGLint format)
2596 {
2597    switch (format) {
2598    case DRM_FORMAT_R8:
2599    case DRM_FORMAT_RG88:
2600    case DRM_FORMAT_GR88:
2601    case DRM_FORMAT_R16:
2602    case DRM_FORMAT_GR1616:
2603    case DRM_FORMAT_RGB332:
2604    case DRM_FORMAT_BGR233:
2605    case DRM_FORMAT_XRGB4444:
2606    case DRM_FORMAT_XBGR4444:
2607    case DRM_FORMAT_RGBX4444:
2608    case DRM_FORMAT_BGRX4444:
2609    case DRM_FORMAT_ARGB4444:
2610    case DRM_FORMAT_ABGR4444:
2611    case DRM_FORMAT_RGBA4444:
2612    case DRM_FORMAT_BGRA4444:
2613    case DRM_FORMAT_XRGB1555:
2614    case DRM_FORMAT_XBGR1555:
2615    case DRM_FORMAT_RGBX5551:
2616    case DRM_FORMAT_BGRX5551:
2617    case DRM_FORMAT_ARGB1555:
2618    case DRM_FORMAT_ABGR1555:
2619    case DRM_FORMAT_RGBA5551:
2620    case DRM_FORMAT_BGRA5551:
2621    case DRM_FORMAT_RGB565:
2622    case DRM_FORMAT_BGR565:
2623    case DRM_FORMAT_RGB888:
2624    case DRM_FORMAT_BGR888:
2625    case DRM_FORMAT_XRGB8888:
2626    case DRM_FORMAT_XBGR8888:
2627    case DRM_FORMAT_RGBX8888:
2628    case DRM_FORMAT_BGRX8888:
2629    case DRM_FORMAT_ARGB8888:
2630    case DRM_FORMAT_ABGR8888:
2631    case DRM_FORMAT_RGBA8888:
2632    case DRM_FORMAT_BGRA8888:
2633    case DRM_FORMAT_XRGB2101010:
2634    case DRM_FORMAT_XBGR2101010:
2635    case DRM_FORMAT_RGBX1010102:
2636    case DRM_FORMAT_BGRX1010102:
2637    case DRM_FORMAT_ARGB2101010:
2638    case DRM_FORMAT_ABGR2101010:
2639    case DRM_FORMAT_RGBA1010102:
2640    case DRM_FORMAT_BGRA1010102:
2641    case DRM_FORMAT_XBGR16161616F:
2642    case DRM_FORMAT_ABGR16161616F:
2643    case DRM_FORMAT_YUYV:
2644    case DRM_FORMAT_YVYU:
2645    case DRM_FORMAT_UYVY:
2646    case DRM_FORMAT_VYUY:
2647    case DRM_FORMAT_AYUV:
2648    case DRM_FORMAT_XYUV8888:
2649    case DRM_FORMAT_Y210:
2650    case DRM_FORMAT_Y212:
2651    case DRM_FORMAT_Y216:
2652    case DRM_FORMAT_Y410:
2653    case DRM_FORMAT_Y412:
2654    case DRM_FORMAT_Y416:
2655       return 1;
2656
2657    case DRM_FORMAT_NV12:
2658    case DRM_FORMAT_NV21:
2659    case DRM_FORMAT_NV16:
2660    case DRM_FORMAT_NV61:
2661    case DRM_FORMAT_P010:
2662    case DRM_FORMAT_P012:
2663    case DRM_FORMAT_P016:
2664       return 2;
2665
2666    case DRM_FORMAT_YUV410:
2667    case DRM_FORMAT_YVU410:
2668    case DRM_FORMAT_YUV411:
2669    case DRM_FORMAT_YVU411:
2670    case DRM_FORMAT_YUV420:
2671    case DRM_FORMAT_YVU420:
2672    case DRM_FORMAT_YUV422:
2673    case DRM_FORMAT_YVU422:
2674    case DRM_FORMAT_YUV444:
2675    case DRM_FORMAT_YVU444:
2676       return 3;
2677
2678    default:
2679       return 0;
2680    }
2681 }
2682
2683 /* Returns the total number of file descriptors. Zero indicates an error. */
2684 static unsigned
2685 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2686 {
2687    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2688    if (plane_n == 0) {
2689       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2690       return 0;
2691    }
2692
2693    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2694       /**
2695        * The modifiers extension spec says:
2696        *
2697        * "Modifiers may modify any attribute of a buffer import, including
2698        *  but not limited to adding extra planes to a format which
2699        *  otherwise does not have those planes. As an example, a modifier
2700        *  may add a plane for an external compression buffer to a
2701        *  single-plane format. The exact meaning and effect of any
2702        *  modifier is canonically defined by drm_fourcc.h, not as part of
2703        *  this extension."
2704        */
2705       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2706           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2707          plane_n = i + 1;
2708       }
2709    }
2710
2711    /**
2712      * The spec says:
2713      *
2714      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2715      *    incomplete, EGL_BAD_PARAMETER is generated."
2716      */
2717    for (unsigned i = 0; i < plane_n; ++i) {
2718       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2719           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2720           !attrs->DMABufPlanePitches[i].IsPresent) {
2721          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2722          return 0;
2723       }
2724    }
2725
2726    /**
2727     * The spec also says:
2728     *
2729     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2730     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2731     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2732     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2733     */
2734    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2735       if (attrs->DMABufPlaneFds[i].IsPresent ||
2736           attrs->DMABufPlaneOffsets[i].IsPresent ||
2737           attrs->DMABufPlanePitches[i].IsPresent) {
2738          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2739          return 0;
2740       }
2741    }
2742
2743    return plane_n;
2744 }
2745
2746 static EGLBoolean
2747 dri2_query_dma_buf_formats(_EGLDisplay *disp, EGLint max,
2748                            EGLint *formats, EGLint *count)
2749 {
2750    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2751    if (max < 0 || (max > 0 && formats == NULL))
2752       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2753
2754    if (dri2_dpy->image->base.version < 15 ||
2755        dri2_dpy->image->queryDmaBufFormats == NULL)
2756       return EGL_FALSE;
2757
2758    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2759                                             formats, count))
2760       return EGL_FALSE;
2761
2762    if (max > 0) {
2763       /* Assert that all of the formats returned are actually fourcc formats.
2764        * Some day, if we want the internal interface function to be able to
2765        * return the fake fourcc formats defined in dri_interface.h, we'll have
2766        * to do something more clever here to pair the list down to just real
2767        * fourcc formats so that we don't leak the fake internal ones.
2768        */
2769       for (int i = 0; i < *count; i++) {
2770          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2771       }
2772    }
2773
2774    return EGL_TRUE;
2775 }
2776
2777 static EGLBoolean
2778 dri2_query_dma_buf_modifiers(_EGLDisplay *disp, EGLint format,
2779                              EGLint max, EGLuint64KHR *modifiers,
2780                              EGLBoolean *external_only, EGLint *count)
2781 {
2782    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2783
2784    if (dri2_num_fourcc_format_planes(format) == 0)
2785       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2786
2787    if (max < 0)
2788       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2789
2790    if (max > 0 && modifiers == NULL)
2791       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2792
2793    if (dri2_dpy->image->base.version < 15 ||
2794        dri2_dpy->image->queryDmaBufModifiers == NULL)
2795       return EGL_FALSE;
2796
2797    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2798                                              max, modifiers,
2799                                              (unsigned int *) external_only,
2800                                              count) == false)
2801       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2802
2803    return EGL_TRUE;
2804 }
2805
2806 /**
2807  * The spec says:
2808  *
2809  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2810  *  EGL will take a reference to the dma_buf(s) which it will release at any
2811  *  time while the EGLDisplay is initialized. It is the responsibility of the
2812  *  application to close the dma_buf file descriptors."
2813  *
2814  * Therefore we must never close or otherwise modify the file descriptors.
2815  */
2816 _EGLImage *
2817 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2818                           EGLClientBuffer buffer, const EGLint *attr_list)
2819 {
2820    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2821    _EGLImage *res;
2822    _EGLImageAttribs attrs;
2823    __DRIimage *dri_image;
2824    unsigned num_fds;
2825    int fds[DMA_BUF_MAX_PLANES];
2826    int pitches[DMA_BUF_MAX_PLANES];
2827    int offsets[DMA_BUF_MAX_PLANES];
2828    uint64_t modifier;
2829    bool has_modifier = false;
2830    unsigned error;
2831
2832    /**
2833     * The spec says:
2834     *
2835     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2836     *     error EGL_BAD_PARAMETER is generated."
2837     */
2838    if (buffer != NULL) {
2839       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2840       return NULL;
2841    }
2842
2843    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2844       return NULL;
2845
2846    if (!dri2_check_dma_buf_attribs(&attrs))
2847       return NULL;
2848
2849    num_fds = dri2_check_dma_buf_format(&attrs);
2850    if (!num_fds)
2851       return NULL;
2852
2853    for (unsigned i = 0; i < num_fds; ++i) {
2854       fds[i] = attrs.DMABufPlaneFds[i].Value;
2855       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2856       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2857    }
2858
2859    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2860     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2861     * attrs.DMABufPlaneModifiersHi[0] */
2862    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2863       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2864                                       attrs.DMABufPlaneModifiersLo[0].Value);
2865       has_modifier = true;
2866    }
2867
2868    if (attrs.ProtectedContent) {
2869       if (dri2_dpy->image->base.version < 18 ||
2870           dri2_dpy->image->createImageFromDmaBufs3 == NULL) {
2871          _eglError(EGL_BAD_MATCH, "unsupported protected_content attribute");
2872          return EGL_NO_IMAGE_KHR;
2873       }
2874       if (!has_modifier)
2875          modifier = DRM_FORMAT_MOD_INVALID;
2876
2877       dri_image =
2878          dri2_dpy->image->createImageFromDmaBufs3(dri2_dpy->dri_screen,
2879             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2880             modifier, fds, num_fds, pitches, offsets,
2881             attrs.DMABufYuvColorSpaceHint.Value,
2882             attrs.DMABufSampleRangeHint.Value,
2883             attrs.DMABufChromaHorizontalSiting.Value,
2884             attrs.DMABufChromaVerticalSiting.Value,
2885             attrs.ProtectedContent ? __DRI_IMAGE_PROTECTED_CONTENT_FLAG : 0,
2886             &error,
2887             NULL);
2888    }
2889    else if (has_modifier) {
2890       if (dri2_dpy->image->base.version < 15 ||
2891           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2892          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2893          return EGL_NO_IMAGE_KHR;
2894       }
2895       dri_image =
2896          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2897             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2898             modifier, fds, num_fds, pitches, offsets,
2899             attrs.DMABufYuvColorSpaceHint.Value,
2900             attrs.DMABufSampleRangeHint.Value,
2901             attrs.DMABufChromaHorizontalSiting.Value,
2902             attrs.DMABufChromaVerticalSiting.Value,
2903             &error,
2904             NULL);
2905    }
2906    else {
2907       dri_image =
2908          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2909             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2910             fds, num_fds, pitches, offsets,
2911             attrs.DMABufYuvColorSpaceHint.Value,
2912             attrs.DMABufSampleRangeHint.Value,
2913             attrs.DMABufChromaHorizontalSiting.Value,
2914             attrs.DMABufChromaVerticalSiting.Value,
2915             &error,
2916             NULL);
2917    }
2918    dri2_create_image_khr_texture_error(error);
2919
2920    if (!dri_image)
2921       return EGL_NO_IMAGE_KHR;
2922
2923    res = dri2_create_image_from_dri(disp, dri_image);
2924
2925    return res;
2926 }
2927 static _EGLImage *
2928 dri2_create_drm_image_mesa(_EGLDisplay *disp, const EGLint *attr_list)
2929 {
2930    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2931    struct dri2_egl_image *dri2_img;
2932    _EGLImageAttribs attrs;
2933    unsigned int dri_use, valid_mask;
2934    int format;
2935
2936    if (!attr_list) {
2937       _eglError(EGL_BAD_PARAMETER, __func__);
2938       return EGL_NO_IMAGE_KHR;
2939    }
2940
2941    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2942       return EGL_NO_IMAGE_KHR;
2943
2944    if (attrs.Width <= 0 || attrs.Height <= 0) {
2945       _eglError(EGL_BAD_PARAMETER, __func__);
2946       return EGL_NO_IMAGE_KHR;
2947    }
2948
2949    switch (attrs.DRMBufferFormatMESA) {
2950    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2951       format = __DRI_IMAGE_FORMAT_ARGB8888;
2952       break;
2953    default:
2954       _eglError(EGL_BAD_PARAMETER, __func__);
2955       return EGL_NO_IMAGE_KHR;
2956    }
2957
2958    valid_mask =
2959       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2960       EGL_DRM_BUFFER_USE_SHARE_MESA |
2961       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2962    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2963       _eglError(EGL_BAD_PARAMETER, __func__);
2964       return EGL_NO_IMAGE_KHR;
2965    }
2966
2967    dri_use = 0;
2968    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2969       dri_use |= __DRI_IMAGE_USE_SHARE;
2970    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2971       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2972    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2973       dri_use |= __DRI_IMAGE_USE_CURSOR;
2974
2975    dri2_img = malloc(sizeof *dri2_img);
2976    if (!dri2_img) {
2977       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2978       return EGL_NO_IMAGE_KHR;
2979    }
2980
2981    _eglInitImage(&dri2_img->base, disp);
2982
2983    dri2_img->dri_image =
2984       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2985                                    attrs.Width, attrs.Height,
2986                                    format, dri_use, dri2_img);
2987    if (dri2_img->dri_image == NULL) {
2988       free(dri2_img);
2989        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2990       return EGL_NO_IMAGE_KHR;
2991    }
2992
2993    return &dri2_img->base;
2994 }
2995
2996 static EGLBoolean
2997 dri2_export_drm_image_mesa(_EGLDisplay *disp, _EGLImage *img,
2998                           EGLint *name, EGLint *handle, EGLint *stride)
2999 {
3000    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3001    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3002
3003    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
3004                                             __DRI_IMAGE_ATTRIB_NAME, name))
3005       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
3006
3007    if (handle)
3008       dri2_dpy->image->queryImage(dri2_img->dri_image,
3009                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
3010
3011    if (stride)
3012       dri2_dpy->image->queryImage(dri2_img->dri_image,
3013                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
3014
3015    return EGL_TRUE;
3016 }
3017
3018 /**
3019  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
3020
3021  * The spec provides a boolean return for the driver to reject exporting for
3022  * basically any reason, but doesn't specify any particular error cases.  For
3023  * now, we just fail if we don't have a DRM fourcc for the format.
3024  */
3025 static bool
3026 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
3027 {
3028    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3029    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3030    EGLint fourcc;
3031
3032    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
3033                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
3034       return false;
3035    }
3036
3037    return true;
3038 }
3039
3040 static EGLBoolean
3041 dri2_export_dma_buf_image_query_mesa(_EGLDisplay *disp, _EGLImage *img,
3042                                      EGLint *fourcc, EGLint *nplanes,
3043                                      EGLuint64KHR *modifiers)
3044 {
3045    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3046    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3047    int num_planes;
3048
3049    if (!dri2_can_export_dma_buf_image(disp, img))
3050       return EGL_FALSE;
3051
3052    dri2_dpy->image->queryImage(dri2_img->dri_image,
3053                                __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
3054    if (nplanes)
3055      *nplanes = num_planes;
3056
3057    if (fourcc)
3058       dri2_dpy->image->queryImage(dri2_img->dri_image,
3059                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
3060
3061    if (modifiers) {
3062       int mod_hi, mod_lo;
3063       uint64_t modifier = DRM_FORMAT_MOD_INVALID;
3064       bool query;
3065
3066       query = dri2_dpy->image->queryImage(dri2_img->dri_image,
3067                                           __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
3068                                           &mod_hi);
3069       query &= dri2_dpy->image->queryImage(dri2_img->dri_image,
3070                                            __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
3071                                            &mod_lo);
3072       if (query)
3073          modifier = combine_u32_into_u64 (mod_hi, mod_lo);
3074
3075       for (int i = 0; i < num_planes; i++)
3076         modifiers[i] = modifier;
3077    }
3078
3079    return EGL_TRUE;
3080 }
3081
3082 static EGLBoolean
3083 dri2_export_dma_buf_image_mesa(_EGLDisplay *disp, _EGLImage *img,
3084                                int *fds, EGLint *strides, EGLint *offsets)
3085 {
3086    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3087    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3088    EGLint nplanes;
3089
3090    if (!dri2_can_export_dma_buf_image(disp, img))
3091       return EGL_FALSE;
3092
3093    /* EGL_MESA_image_dma_buf_export spec says:
3094     *    "If the number of fds is less than the number of planes, then
3095     *    subsequent fd slots should contain -1."
3096     */
3097    if (fds) {
3098       /* Query nplanes so that we know how big the given array is. */
3099       dri2_dpy->image->queryImage(dri2_img->dri_image,
3100                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
3101       memset(fds, -1, nplanes * sizeof(int));
3102    }
3103
3104    /* rework later to provide multiple fds/strides/offsets */
3105    if (fds)
3106       dri2_dpy->image->queryImage(dri2_img->dri_image,
3107                                   __DRI_IMAGE_ATTRIB_FD, fds);
3108
3109    if (strides)
3110       dri2_dpy->image->queryImage(dri2_img->dri_image,
3111                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
3112
3113    if (offsets) {
3114       int img_offset;
3115       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
3116                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
3117       if (ret)
3118          offsets[0] = img_offset;
3119       else
3120          offsets[0] = 0;
3121    }
3122
3123    return EGL_TRUE;
3124 }
3125
3126 #endif
3127
3128 _EGLImage *
3129 dri2_create_image_khr(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
3130                       EGLClientBuffer buffer, const EGLint *attr_list)
3131 {
3132    switch (target) {
3133    case EGL_GL_TEXTURE_2D_KHR:
3134    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
3135    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
3136    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
3137    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
3138    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
3139    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
3140    case EGL_GL_TEXTURE_3D_KHR:
3141       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
3142    case EGL_GL_RENDERBUFFER_KHR:
3143       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
3144 #ifdef HAVE_LIBDRM
3145    case EGL_DRM_BUFFER_MESA:
3146       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
3147    case EGL_LINUX_DMA_BUF_EXT:
3148       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
3149 #endif
3150 #ifdef HAVE_WAYLAND_PLATFORM
3151    case EGL_WAYLAND_BUFFER_WL:
3152       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
3153 #endif
3154    default:
3155       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
3156       return EGL_NO_IMAGE_KHR;
3157    }
3158 }
3159
3160 static EGLBoolean
3161 dri2_destroy_image_khr(_EGLDisplay *disp, _EGLImage *image)
3162 {
3163    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3164    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
3165
3166    dri2_dpy->image->destroyImage(dri2_img->dri_image);
3167    free(dri2_img);
3168
3169    return EGL_TRUE;
3170 }
3171
3172 #ifdef HAVE_WAYLAND_PLATFORM
3173
3174 static void
3175 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
3176                          struct wl_drm_buffer *buffer)
3177 {
3178    _EGLDisplay *disp = user_data;
3179    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3180    __DRIimage *img;
3181    int dri_components = 0;
3182
3183    if (fd == -1)
3184       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
3185                                                   buffer->width,
3186                                                   buffer->height,
3187                                                   buffer->format,
3188                                                   (int*)&name, 1,
3189                                                   buffer->stride,
3190                                                   buffer->offset,
3191                                                   NULL);
3192    else
3193       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
3194                                                 buffer->width,
3195                                                 buffer->height,
3196                                                 buffer->format,
3197                                                 &fd, 1,
3198                                                 buffer->stride,
3199                                                 buffer->offset,
3200                                                 NULL);
3201
3202    if (img == NULL)
3203       return;
3204
3205    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
3206
3207    buffer->driver_format = NULL;
3208    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
3209       if (wl_drm_components[i].dri_components == dri_components)
3210          buffer->driver_format = &wl_drm_components[i];
3211
3212    if (buffer->driver_format == NULL)
3213       dri2_dpy->image->destroyImage(img);
3214    else
3215       buffer->driver_buffer = img;
3216 }
3217
3218 static void
3219 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
3220 {
3221    _EGLDisplay *disp = user_data;
3222    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3223
3224    dri2_dpy->image->destroyImage(buffer->driver_buffer);
3225 }
3226
3227 static EGLBoolean
3228 dri2_bind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3229 {
3230    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3231    const struct wayland_drm_callbacks wl_drm_callbacks = {
3232       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
3233       .reference_buffer = dri2_wl_reference_buffer,
3234       .release_buffer = dri2_wl_release_buffer,
3235       .is_format_supported = dri2_wl_is_format_supported
3236    };
3237    int flags = 0;
3238    char *device_name;
3239    uint64_t cap;
3240
3241    if (dri2_dpy->wl_server_drm)
3242            return EGL_FALSE;
3243
3244    device_name = drmGetRenderDeviceNameFromFd(dri2_dpy->fd);
3245    if (!device_name)
3246       device_name = strdup(dri2_dpy->device_name);
3247    if (!device_name)
3248       return EGL_FALSE;
3249
3250    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
3251        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
3252        dri2_dpy->image->base.version >= 7 &&
3253        dri2_dpy->image->createImageFromFds != NULL)
3254       flags |= WAYLAND_DRM_PRIME;
3255
3256    dri2_dpy->wl_server_drm =
3257            wayland_drm_init(wl_dpy, device_name,
3258                             &wl_drm_callbacks, disp, flags);
3259
3260    free(device_name);
3261
3262    if (!dri2_dpy->wl_server_drm)
3263            return EGL_FALSE;
3264
3265 #ifdef HAVE_DRM_PLATFORM
3266    /* We have to share the wl_drm instance with gbm, so gbm can convert
3267     * wl_buffers to gbm bos. */
3268    if (dri2_dpy->gbm_dri)
3269       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
3270 #endif
3271
3272    return EGL_TRUE;
3273 }
3274
3275 static EGLBoolean
3276 dri2_unbind_wayland_display_wl(_EGLDisplay *disp, struct wl_display *wl_dpy)
3277 {
3278    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3279
3280    if (!dri2_dpy->wl_server_drm)
3281            return EGL_FALSE;
3282
3283    wayland_drm_uninit(dri2_dpy->wl_server_drm);
3284    dri2_dpy->wl_server_drm = NULL;
3285
3286    return EGL_TRUE;
3287 }
3288
3289 static EGLBoolean
3290 dri2_query_wayland_buffer_wl(_EGLDisplay *disp, struct wl_resource *buffer_resource,
3291                              EGLint attribute, EGLint *value)
3292 {
3293    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3294    struct wl_drm_buffer *buffer;
3295    const struct wl_drm_components_descriptor *format;
3296
3297    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
3298    if (!buffer)
3299       return EGL_FALSE;
3300
3301    format = buffer->driver_format;
3302    switch (attribute) {
3303    case EGL_TEXTURE_FORMAT:
3304       *value = format->components;
3305       return EGL_TRUE;
3306    case EGL_WIDTH:
3307       *value = buffer->width;
3308       return EGL_TRUE;
3309    case EGL_HEIGHT:
3310       *value = buffer->height;
3311       return EGL_TRUE;
3312    }
3313
3314    return EGL_FALSE;
3315 }
3316 #endif
3317
3318 static void
3319 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
3320 {
3321    p_atomic_inc(&sync->refcount);
3322 }
3323
3324 static void
3325 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
3326                     struct dri2_egl_sync *dri2_sync)
3327 {
3328    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
3329       switch (dri2_sync->base.Type) {
3330       case EGL_SYNC_REUSABLE_KHR:
3331          cnd_destroy(&dri2_sync->cond);
3332          break;
3333       case EGL_SYNC_NATIVE_FENCE_ANDROID:
3334          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
3335             close(dri2_sync->base.SyncFd);
3336          break;
3337       default:
3338          break;
3339       }
3340
3341       if (dri2_sync->fence)
3342          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
3343
3344       free(dri2_sync);
3345    }
3346 }
3347
3348 static _EGLSync *
3349 dri2_create_sync(_EGLDisplay *disp, EGLenum type, const EGLAttrib *attrib_list)
3350 {
3351    _EGLContext *ctx = _eglGetCurrentContext();
3352    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3353    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3354    struct dri2_egl_sync *dri2_sync;
3355    EGLint ret;
3356    pthread_condattr_t attr;
3357
3358    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
3359    if (!dri2_sync) {
3360       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3361       return NULL;
3362    }
3363
3364    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
3365       free(dri2_sync);
3366       return NULL;
3367    }
3368
3369    switch (type) {
3370    case EGL_SYNC_FENCE_KHR:
3371       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
3372       if (!dri2_sync->fence) {
3373          /* Why did it fail? DRI doesn't return an error code, so we emit
3374           * a generic EGL error that doesn't communicate user error.
3375           */
3376          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3377          free(dri2_sync);
3378          return NULL;
3379       }
3380       break;
3381
3382    case EGL_SYNC_CL_EVENT_KHR:
3383       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
3384                                  dri2_dpy->dri_screen,
3385                                  dri2_sync->base.CLEvent);
3386       /* this can only happen if the cl_event passed in is invalid. */
3387       if (!dri2_sync->fence) {
3388          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3389          free(dri2_sync);
3390          return NULL;
3391       }
3392
3393       /* the initial status must be "signaled" if the cl_event is signaled */
3394       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
3395                                             dri2_sync->fence, 0, 0))
3396          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3397       break;
3398
3399    case EGL_SYNC_REUSABLE_KHR:
3400       /* intialize attr */
3401       ret = pthread_condattr_init(&attr);
3402
3403       if (ret) {
3404          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3405          free(dri2_sync);
3406          return NULL;
3407       }
3408
3409       /* change clock attribute to CLOCK_MONOTONIC */
3410       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
3411
3412       if (ret) {
3413          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3414          free(dri2_sync);
3415          return NULL;
3416       }
3417
3418       ret = pthread_cond_init(&dri2_sync->cond, &attr);
3419
3420       if (ret) {
3421          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3422          free(dri2_sync);
3423          return NULL;
3424       }
3425
3426       /* initial status of reusable sync must be "unsignaled" */
3427       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3428       break;
3429
3430    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3431       if (dri2_dpy->fence->create_fence_fd) {
3432          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3433                                     dri2_ctx->dri_context,
3434                                     dri2_sync->base.SyncFd);
3435       }
3436       if (!dri2_sync->fence) {
3437          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3438          free(dri2_sync);
3439          return NULL;
3440       }
3441       break;
3442    }
3443
3444    p_atomic_set(&dri2_sync->refcount, 1);
3445    return &dri2_sync->base;
3446 }
3447
3448 static EGLBoolean
3449 dri2_destroy_sync(_EGLDisplay *disp, _EGLSync *sync)
3450 {
3451    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3452    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3453    EGLint ret = EGL_TRUE;
3454    EGLint err;
3455
3456    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3457     * then unlock all threads possibly blocked by the reusable sync before
3458     * destroying it.
3459     */
3460    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3461        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3462       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3463       /* unblock all threads currently blocked by sync */
3464       err = cnd_broadcast(&dri2_sync->cond);
3465
3466       if (err) {
3467          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3468          ret = EGL_FALSE;
3469       }
3470    }
3471
3472    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3473
3474    return ret;
3475 }
3476
3477 static EGLint
3478 dri2_dup_native_fence_fd(_EGLDisplay *disp, _EGLSync *sync)
3479 {
3480    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3481    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3482
3483    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3484
3485    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3486       /* try to retrieve the actual native fence fd.. if rendering is
3487        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3488        */
3489       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3490                                                    dri2_sync->fence);
3491    }
3492
3493    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3494       /* if native fence fd still not created, return an error: */
3495       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3496       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3497    }
3498
3499    assert(sync_valid_fd(sync->SyncFd));
3500
3501    return os_dupfd_cloexec(sync->SyncFd);
3502 }
3503
3504 static void
3505 dri2_set_blob_cache_funcs(_EGLDisplay *disp,
3506                           EGLSetBlobFuncANDROID set,
3507                           EGLGetBlobFuncANDROID get)
3508 {
3509    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3510    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3511                                    disp->BlobCacheSet,
3512                                    disp->BlobCacheGet);
3513 }
3514
3515 static EGLint
3516 dri2_client_wait_sync(_EGLDisplay *disp, _EGLSync *sync,
3517                       EGLint flags, EGLTime timeout)
3518 {
3519    _EGLContext *ctx = _eglGetCurrentContext();
3520    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3521    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3522    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3523    unsigned wait_flags = 0;
3524
3525    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3526
3527    /* The EGL_KHR_fence_sync spec states:
3528     *
3529     *    "If no context is current for the bound API,
3530     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3531     */
3532    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3533       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3534
3535    /* the sync object should take a reference while waiting */
3536    dri2_egl_ref_sync(dri2_sync);
3537
3538    switch (sync->Type) {
3539    case EGL_SYNC_FENCE_KHR:
3540    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3541    case EGL_SYNC_CL_EVENT_KHR:
3542       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3543                                          dri2_sync->fence, wait_flags,
3544                                          timeout))
3545          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3546       else
3547          ret = EGL_TIMEOUT_EXPIRED_KHR;
3548       break;
3549
3550    case EGL_SYNC_REUSABLE_KHR:
3551       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3552           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3553          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3554          dri2_gl_flush();
3555       }
3556
3557       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3558       if (timeout == EGL_FOREVER_KHR) {
3559          mtx_lock(&dri2_sync->mutex);
3560          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3561          mtx_unlock(&dri2_sync->mutex);
3562       } else {
3563          /* if reusable sync has not been yet signaled */
3564          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3565             /* timespecs for cnd_timedwait */
3566             struct timespec current;
3567             struct timespec expire;
3568
3569             /* We override the clock to monotonic when creating the condition
3570              * variable. */
3571             clock_gettime(CLOCK_MONOTONIC, &current);
3572
3573             /* calculating when to expire */
3574             expire.tv_nsec = timeout % 1000000000L;
3575             expire.tv_sec = timeout / 1000000000L;
3576
3577             expire.tv_nsec += current.tv_nsec;
3578             expire.tv_sec += current.tv_sec;
3579
3580             /* expire.nsec now is a number between 0 and 1999999998 */
3581             if (expire.tv_nsec > 999999999L) {
3582                expire.tv_sec++;
3583                expire.tv_nsec -= 1000000000L;
3584             }
3585
3586             mtx_lock(&dri2_sync->mutex);
3587             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3588             mtx_unlock(&dri2_sync->mutex);
3589
3590             if (ret == thrd_busy) {
3591                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3592                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3593                } else {
3594                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3595                   ret = EGL_FALSE;
3596                }
3597             }
3598          }
3599       }
3600       break;
3601   }
3602   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3603
3604   return ret;
3605 }
3606
3607 static EGLBoolean
3608 dri2_signal_sync(_EGLDisplay *disp, _EGLSync *sync, EGLenum mode)
3609 {
3610    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3611    EGLint ret;
3612
3613    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3614       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3615
3616    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3617       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3618
3619    dri2_sync->base.SyncStatus = mode;
3620
3621    if (mode == EGL_SIGNALED_KHR) {
3622       ret = cnd_broadcast(&dri2_sync->cond);
3623
3624       /* fail to broadcast */
3625       if (ret)
3626          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3627    }
3628
3629    return EGL_TRUE;
3630 }
3631
3632 static EGLint
3633 dri2_server_wait_sync(_EGLDisplay *disp, _EGLSync *sync)
3634 {
3635    _EGLContext *ctx = _eglGetCurrentContext();
3636    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3637    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3638    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3639
3640    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3641                                      dri2_sync->fence, 0);
3642    return EGL_TRUE;
3643 }
3644
3645 static int
3646 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3647                                struct mesa_glinterop_device_info *out)
3648 {
3649    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3650    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3651
3652    if (!dri2_dpy->interop)
3653       return MESA_GLINTEROP_UNSUPPORTED;
3654
3655    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3656 }
3657
3658 static int
3659 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3660                            struct mesa_glinterop_export_in *in,
3661                            struct mesa_glinterop_export_out *out)
3662 {
3663    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3664    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3665
3666    if (!dri2_dpy->interop)
3667       return MESA_GLINTEROP_UNSUPPORTED;
3668
3669    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3670 }
3671
3672 const _EGLDriver _eglDriver = {
3673    .Initialize = dri2_initialize,
3674    .Terminate = dri2_terminate,
3675    .CreateContext = dri2_create_context,
3676    .DestroyContext = dri2_destroy_context,
3677    .MakeCurrent = dri2_make_current,
3678    .CreateWindowSurface = dri2_create_window_surface,
3679    .CreatePixmapSurface = dri2_create_pixmap_surface,
3680    .CreatePbufferSurface = dri2_create_pbuffer_surface,
3681    .DestroySurface = dri2_destroy_surface,
3682    .GetProcAddress = dri2_get_proc_address,
3683    .WaitClient = dri2_wait_client,
3684    .WaitNative = dri2_wait_native,
3685    .BindTexImage = dri2_bind_tex_image,
3686    .ReleaseTexImage = dri2_release_tex_image,
3687    .SwapInterval = dri2_swap_interval,
3688    .SwapBuffers = dri2_swap_buffers,
3689    .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
3690    .SwapBuffersRegionNOK = dri2_swap_buffers_region,
3691    .SetDamageRegion = dri2_set_damage_region,
3692    .PostSubBufferNV = dri2_post_sub_buffer,
3693    .CopyBuffers = dri2_copy_buffers,
3694    .QueryBufferAge = dri2_query_buffer_age,
3695    .CreateImageKHR = dri2_create_image,
3696    .DestroyImageKHR = dri2_destroy_image_khr,
3697    .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
3698    .QuerySurface = dri2_query_surface,
3699    .QueryDriverName = dri2_query_driver_name,
3700    .QueryDriverConfig = dri2_query_driver_config,
3701 #ifdef HAVE_LIBDRM
3702    .CreateDRMImageMESA = dri2_create_drm_image_mesa,
3703    .ExportDRMImageMESA = dri2_export_drm_image_mesa,
3704    .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
3705    .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
3706    .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
3707    .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
3708 #endif
3709 #ifdef HAVE_WAYLAND_PLATFORM
3710    .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
3711    .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
3712    .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
3713 #endif
3714    .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
3715    .CreateSyncKHR = dri2_create_sync,
3716    .ClientWaitSyncKHR = dri2_client_wait_sync,
3717    .SignalSyncKHR = dri2_signal_sync,
3718    .WaitSyncKHR = dri2_server_wait_sync,
3719    .DestroySyncKHR = dri2_destroy_sync,
3720    .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
3721    .GLInteropExportObject = dri2_interop_export_object,
3722    .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
3723    .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
3724 };