src/egl/drivers/dri2/platform_android.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
   5  * Copyright (C) 2010-2011 LunarG Inc.
   6  *
   7  * Based on platform_x11, which has
   8  *
   9  * Copyright © 2011 Intel Corporation
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a
  12  * copy of this software and associated documentation files (the "Software"),
  13  * to deal in the Software without restriction, including without limitation
  14  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  15  * and/or sell copies of the Software, and to permit persons to whom the
  16  * Software is furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice shall be included
  19  * in all copies or substantial portions of the Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  24  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  26  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  27  * DEALINGS IN THE SOFTWARE.
  28  */
  29
  30 #include <errno.h>
  31 #include <dlfcn.h>
  32 #include <fcntl.h>
  33 #include <xf86drm.h>
  34 #include <stdbool.h>
  35 #include <sync/sync.h>
  36
  37 #include "loader.h"
  38 #include "egl_dri2.h"
  39 #include "egl_dri2_fallbacks.h"
  40 #include "gralloc_drm.h"
  41
  42 #define ALIGN(val, align)       (((val) + (align) - 1) & ~((align) - 1))
  43
  44 struct droid_yuv_format {
  45    /* Lookup keys */
  46    int native; /* HAL_PIXEL_FORMAT_ */
  47    int is_ycrcb; /* 0 if chroma order is {Cb, Cr}, 1 if {Cr, Cb} */
  48    int chroma_step; /* Distance in bytes between subsequent chroma pixels. */
  49
  50    /* Result */
  51    int fourcc; /* __DRI_IMAGE_FOURCC_ */
  52 };
  53
  54 /* The following table is used to look up a DRI image FourCC based
  55  * on native format and information contained in android_ycbcr struct. */
  56 static const struct droid_yuv_format droid_yuv_formats[] = {
  57    /* Native format, YCrCb, Chroma step, DRI image FourCC */
  58    { HAL_PIXEL_FORMAT_YCbCr_420_888,   0, 2, __DRI_IMAGE_FOURCC_NV12 },
  59    { HAL_PIXEL_FORMAT_YCbCr_420_888,   0, 1, __DRI_IMAGE_FOURCC_YUV420 },
  60    { HAL_PIXEL_FORMAT_YCbCr_420_888,   1, 1, __DRI_IMAGE_FOURCC_YVU420 },
  61    { HAL_PIXEL_FORMAT_YV12,            1, 1, __DRI_IMAGE_FOURCC_YVU420 },
  62 };
  63
  64 static int
  65 get_fourcc_yuv(int native, int is_ycrcb, int chroma_step)
  66 {
  67    int i;
  68
  69    for (i = 0; i < ARRAY_SIZE(droid_yuv_formats); ++i)
  70       if (droid_yuv_formats[i].native == native &&
  71           droid_yuv_formats[i].is_ycrcb == is_ycrcb &&
  72           droid_yuv_formats[i].chroma_step == chroma_step)
  73          return droid_yuv_formats[i].fourcc;
  74
  75    return -1;
  76 }
  77
  78 static bool
  79 is_yuv(int native)
  80 {
  81    int i;
  82
  83    for (i = 0; i < ARRAY_SIZE(droid_yuv_formats); ++i)
  84       if (droid_yuv_formats[i].native == native)
  85          return true;
  86
  87    return false;
  88 }
  89
  90 static int
  91 get_format_bpp(int native)
  92 {
  93    int bpp;
  94
  95    switch (native) {
  96    case HAL_PIXEL_FORMAT_RGBA_8888:
  97    case HAL_PIXEL_FORMAT_RGBX_8888:
  98    case HAL_PIXEL_FORMAT_BGRA_8888:
  99       bpp = 4;
 100       break;
 101    case HAL_PIXEL_FORMAT_RGB_565:
 102       bpp = 2;
 103       break;
 104    default:
 105       bpp = 0;
 106       break;
 107    }
 108
 109    return bpp;
 110 }
 111
 112 /* createImageFromFds requires fourcc format */
 113 static int get_fourcc(int native)
 114 {
 115    switch (native) {
 116    case HAL_PIXEL_FORMAT_RGB_565:   return __DRI_IMAGE_FOURCC_RGB565;
 117    case HAL_PIXEL_FORMAT_BGRA_8888: return __DRI_IMAGE_FOURCC_ARGB8888;
 118    case HAL_PIXEL_FORMAT_RGBA_8888: return __DRI_IMAGE_FOURCC_ABGR8888;
 119    case HAL_PIXEL_FORMAT_RGBX_8888: return __DRI_IMAGE_FOURCC_XBGR8888;
 120    default:
 121       _eglLog(_EGL_WARNING, "unsupported native buffer format 0x%x", native);
 122    }
 123    return -1;
 124 }
 125
 126 static int get_format(int format)
 127 {
 128    switch (format) {
 129    case HAL_PIXEL_FORMAT_BGRA_8888: return __DRI_IMAGE_FORMAT_ARGB8888;
 130    case HAL_PIXEL_FORMAT_RGB_565:   return __DRI_IMAGE_FORMAT_RGB565;
 131    case HAL_PIXEL_FORMAT_RGBA_8888: return __DRI_IMAGE_FORMAT_ABGR8888;
 132    case HAL_PIXEL_FORMAT_RGBX_8888: return __DRI_IMAGE_FORMAT_XBGR8888;
 133    default:
 134       _eglLog(_EGL_WARNING, "unsupported native buffer format 0x%x", format);
 135    }
 136    return -1;
 137 }
 138
 139 static int
 140 get_native_buffer_fd(struct ANativeWindowBuffer *buf)
 141 {
 142    native_handle_t *handle = (native_handle_t *)buf->handle;
 143    /*
 144     * Various gralloc implementations exist, but the dma-buf fd tends
 145     * to be first. Access it directly to avoid a dependency on specific
 146     * gralloc versions.
 147     */
 148    return (handle && handle->numFds) ? handle->data[0] : -1;
 149 }
 150
 151 static int
 152 get_native_buffer_name(struct ANativeWindowBuffer *buf)
 153 {
 154    return gralloc_drm_get_gem_handle(buf->handle);
 155 }
 156
 157 static EGLBoolean
 158 droid_window_dequeue_buffer(struct dri2_egl_surface *dri2_surf)
 159 {
 160    int fence_fd;
 161
 162    if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer,
 163                                         &fence_fd))
 164       return EGL_FALSE;
 165
 166    /* If access to the buffer is controlled by a sync fence, then block on the
 167     * fence.
 168     *
 169     * It may be more performant to postpone blocking until there is an
 170     * immediate need to write to the buffer. But doing so would require adding
 171     * hooks to the DRI2 loader.
 172     *
 173     * From the ANativeWindow::dequeueBuffer documentation:
 174     *
 175     *    The libsync fence file descriptor returned in the int pointed to by
 176     *    the fenceFd argument will refer to the fence that must signal
 177     *    before the dequeued buffer may be written to.  A value of -1
 178     *    indicates that the caller may access the buffer immediately without
 179     *    waiting on a fence.  If a valid file descriptor is returned (i.e.
 180     *    any value except -1) then the caller is responsible for closing the
 181     *    file descriptor.
 182     */
 183     if (fence_fd >= 0) {
 184        /* From the SYNC_IOC_WAIT documentation in <linux/sync.h>:
 185         *
 186         *    Waits indefinitely if timeout < 0.
 187         */
 188         int timeout = -1;
 189         sync_wait(fence_fd, timeout);
 190         close(fence_fd);
 191    }
 192
 193    dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);
 194
 195    /* Record all the buffers created by ANativeWindow and update back buffer
 196     * for updating buffer's age in swap_buffers.
 197     */
 198    EGLBoolean updated = EGL_FALSE;
 199    for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 200       if (!dri2_surf->color_buffers[i].buffer) {
 201          dri2_surf->color_buffers[i].buffer = dri2_surf->buffer;
 202       }
 203       if (dri2_surf->color_buffers[i].buffer == dri2_surf->buffer) {
 204          dri2_surf->back = &dri2_surf->color_buffers[i];
 205          updated = EGL_TRUE;
 206          break;
 207       }
 208    }
 209
 210    if (!updated) {
 211       /* In case of all the buffers were recreated by ANativeWindow, reset
 212        * the color_buffers
 213        */
 214       for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 215          dri2_surf->color_buffers[i].buffer = NULL;
 216          dri2_surf->color_buffers[i].age = 0;
 217       }
 218       dri2_surf->color_buffers[0].buffer = dri2_surf->buffer;
 219       dri2_surf->back = &dri2_surf->color_buffers[0];
 220    }
 221
 222    return EGL_TRUE;
 223 }
 224
 225 static EGLBoolean
 226 droid_window_enqueue_buffer(_EGLDisplay *disp, struct dri2_egl_surface *dri2_surf)
 227 {
 228    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 229
 230    /* To avoid blocking other EGL calls, release the display mutex before
 231     * we enter droid_window_enqueue_buffer() and re-acquire the mutex upon
 232     * return.
 233     */
 234    mtx_unlock(&disp->Mutex);
 235
 236    /* Queue the buffer without a sync fence. This informs the ANativeWindow
 237     * that it may access the buffer immediately.
 238     *
 239     * From ANativeWindow::dequeueBuffer:
 240     *
 241     *    The fenceFd argument specifies a libsync fence file descriptor for
 242     *    a fence that must signal before the buffer can be accessed.  If
 243     *    the buffer can be accessed immediately then a value of -1 should
 244     *    be used.  The caller must not use the file descriptor after it
 245     *    is passed to queueBuffer, and the ANativeWindow implementation
 246     *    is responsible for closing it.
 247     */
 248    int fence_fd = -1;
 249    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer,
 250                                   fence_fd);
 251
 252    dri2_surf->buffer->common.decRef(&dri2_surf->buffer->common);
 253    dri2_surf->buffer = NULL;
 254    dri2_surf->back = NULL;
 255
 256    mtx_lock(&disp->Mutex);
 257
 258    if (dri2_surf->dri_image_back) {
 259       dri2_dpy->image->destroyImage(dri2_surf->dri_image_back);
 260       dri2_surf->dri_image_back = NULL;
 261    }
 262
 263    return EGL_TRUE;
 264 }
 265
 266 static void
 267 droid_window_cancel_buffer(struct dri2_egl_surface *dri2_surf)
 268 {
 269    int ret;
 270
 271    ret = dri2_surf->window->cancelBuffer(dri2_surf->window, dri2_surf->buffer, -1);
 272    if (ret < 0) {
 273       _eglLog(_EGL_WARNING, "ANativeWindow::cancelBuffer failed");
 274       dri2_surf->base.Lost = true;
 275    }
 276 }
 277
 278 static __DRIbuffer *
 279 droid_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
 280                          unsigned int att, unsigned int format)
 281 {
 282    struct dri2_egl_display *dri2_dpy =
 283       dri2_egl_display(dri2_surf->base.Resource.Display);
 284
 285    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
 286       return NULL;
 287
 288    if (!dri2_surf->local_buffers[att]) {
 289       dri2_surf->local_buffers[att] =
 290          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
 291                dri2_surf->base.Width, dri2_surf->base.Height);
 292    }
 293
 294    return dri2_surf->local_buffers[att];
 295 }
 296
 297 static void
 298 droid_free_local_buffers(struct dri2_egl_surface *dri2_surf)
 299 {
 300    struct dri2_egl_display *dri2_dpy =
 301       dri2_egl_display(dri2_surf->base.Resource.Display);
 302    int i;
 303
 304    for (i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
 305       if (dri2_surf->local_buffers[i]) {
 306          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 307                dri2_surf->local_buffers[i]);
 308          dri2_surf->local_buffers[i] = NULL;
 309       }
 310    }
 311 }
 312
 313 static _EGLSurface *
 314 droid_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 315                     _EGLConfig *conf, void *native_window,
 316                     const EGLint *attrib_list)
 317 {
 318    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 319    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 320    struct dri2_egl_surface *dri2_surf;
 321    struct ANativeWindow *window = native_window;
 322    const __DRIconfig *config;
 323
 324    dri2_surf = calloc(1, sizeof *dri2_surf);
 325    if (!dri2_surf) {
 326       _eglError(EGL_BAD_ALLOC, "droid_create_surface");
 327       return NULL;
 328    }
 329
 330    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 331       goto cleanup_surface;
 332
 333    if (type == EGL_WINDOW_BIT) {
 334       int format;
 335
 336       if (!window || window->common.magic != ANDROID_NATIVE_WINDOW_MAGIC) {
 337          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 338          goto cleanup_surface;
 339       }
 340       if (window->query(window, NATIVE_WINDOW_FORMAT, &format)) {
 341          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 342          goto cleanup_surface;
 343       }
 344
 345       if (format != dri2_conf->base.NativeVisualID) {
 346          _eglLog(_EGL_WARNING, "Native format mismatch: 0x%x != 0x%x",
 347                format, dri2_conf->base.NativeVisualID);
 348       }
 349
 350       window->query(window, NATIVE_WINDOW_WIDTH, &dri2_surf->base.Width);
 351       window->query(window, NATIVE_WINDOW_HEIGHT, &dri2_surf->base.Height);
 352    }
 353
 354    config = dri2_get_dri_config(dri2_conf, type,
 355                                 dri2_surf->base.GLColorspace);
 356    if (!config)
 357       goto cleanup_surface;
 358
 359    dri2_surf->dri_drawable =
 360       dri2_dpy->dri2->createNewDrawable(dri2_dpy->dri_screen, config,
 361                                         dri2_surf);
 362    if (dri2_surf->dri_drawable == NULL) {
 363       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 364       goto cleanup_surface;
 365    }
 366
 367    if (window) {
 368       window->common.incRef(&window->common);
 369       dri2_surf->window = window;
 370    }
 371
 372    return &dri2_surf->base;
 373
 374 cleanup_surface:
 375    free(dri2_surf);
 376
 377    return NULL;
 378 }
 379
 380 static _EGLSurface *
 381 droid_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 382                             _EGLConfig *conf, void *native_window,
 383                             const EGLint *attrib_list)
 384 {
 385    return droid_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 386                                native_window, attrib_list);
 387 }
 388
 389 static _EGLSurface *
 390 droid_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 391                             _EGLConfig *conf, const EGLint *attrib_list)
 392 {
 393    return droid_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 394                               NULL, attrib_list);
 395 }
 396
 397 static EGLBoolean
 398 droid_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 399 {
 400    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 401    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 402
 403    droid_free_local_buffers(dri2_surf);
 404
 405    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 406       if (dri2_surf->buffer)
 407          droid_window_cancel_buffer(dri2_surf);
 408
 409       dri2_surf->window->common.decRef(&dri2_surf->window->common);
 410    }
 411
 412    if (dri2_surf->dri_image_back) {
 413       _eglLog(_EGL_DEBUG, "%s : %d : destroy dri_image_back", __func__, __LINE__);
 414       dri2_dpy->image->destroyImage(dri2_surf->dri_image_back);
 415       dri2_surf->dri_image_back = NULL;
 416    }
 417
 418    if (dri2_surf->dri_image_front) {
 419       _eglLog(_EGL_DEBUG, "%s : %d : destroy dri_image_front", __func__, __LINE__);
 420       dri2_dpy->image->destroyImage(dri2_surf->dri_image_front);
 421       dri2_surf->dri_image_front = NULL;
 422    }
 423
 424    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 425
 426    free(dri2_surf);
 427
 428    return EGL_TRUE;
 429 }
 430
 431 static int
 432 update_buffers(struct dri2_egl_surface *dri2_surf)
 433 {
 434    if (dri2_surf->base.Lost)
 435       return -1;
 436
 437    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 438       return 0;
 439
 440    /* try to dequeue the next back buffer */
 441    if (!dri2_surf->buffer && !droid_window_dequeue_buffer(dri2_surf)) {
 442       _eglLog(_EGL_WARNING, "Could not dequeue buffer from native window");
 443       dri2_surf->base.Lost = true;
 444       return -1;
 445    }
 446
 447    /* free outdated buffers and update the surface size */
 448    if (dri2_surf->base.Width != dri2_surf->buffer->width ||
 449        dri2_surf->base.Height != dri2_surf->buffer->height) {
 450       droid_free_local_buffers(dri2_surf);
 451       dri2_surf->base.Width = dri2_surf->buffer->width;
 452       dri2_surf->base.Height = dri2_surf->buffer->height;
 453    }
 454
 455    return 0;
 456 }
 457
 458 static int
 459 get_front_bo(struct dri2_egl_surface *dri2_surf, unsigned int format)
 460 {
 461    struct dri2_egl_display *dri2_dpy =
 462       dri2_egl_display(dri2_surf->base.Resource.Display);
 463
 464    if (dri2_surf->dri_image_front)
 465       return 0;
 466
 467    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 468       /* According current EGL spec, front buffer rendering
 469        * for window surface is not supported now.
 470        * and mesa doesn't have the implementation of this case.
 471        * Add warning message, but not treat it as error.
 472        */
 473       _eglLog(_EGL_DEBUG, "DRI driver requested unsupported front buffer for window surface");
 474    } else if (dri2_surf->base.Type == EGL_PBUFFER_BIT) {
 475       dri2_surf->dri_image_front =
 476           dri2_dpy->image->createImage(dri2_dpy->dri_screen,
 477                                               dri2_surf->base.Width,
 478                                               dri2_surf->base.Height,
 479                                               format,
 480                                               0,
 481                                               dri2_surf);
 482       if (!dri2_surf->dri_image_front) {
 483          _eglLog(_EGL_WARNING, "dri2_image_front allocation failed");
 484          return -1;
 485       }
 486    }
 487
 488    return 0;
 489 }
 490
 491 static int
 492 get_back_bo(struct dri2_egl_surface *dri2_surf, unsigned int format)
 493 {
 494    struct dri2_egl_display *dri2_dpy =
 495       dri2_egl_display(dri2_surf->base.Resource.Display);
 496    int fourcc, pitch;
 497    int offset = 0, fd;
 498
 499    if (dri2_surf->dri_image_back)
 500       return 0;
 501
 502    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 503       if (!dri2_surf->buffer) {
 504          _eglLog(_EGL_WARNING, "Could not get native buffer");
 505          return -1;
 506       }
 507
 508       fd = get_native_buffer_fd(dri2_surf->buffer);
 509       if (fd < 0) {
 510          _eglLog(_EGL_WARNING, "Could not get native buffer FD");
 511          return -1;
 512       }
 513
 514       fourcc = get_fourcc(dri2_surf->buffer->format);
 515
 516       pitch = dri2_surf->buffer->stride *
 517          get_format_bpp(dri2_surf->buffer->format);
 518
 519       if (fourcc == -1 || pitch == 0) {
 520          _eglLog(_EGL_WARNING, "Invalid buffer fourcc(%x) or pitch(%d)",
 521                  fourcc, pitch);
 522          return -1;
 523       }
 524
 525       dri2_surf->dri_image_back =
 526          dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
 527                                              dri2_surf->base.Width,
 528                                              dri2_surf->base.Height,
 529                                              fourcc,
 530                                              &fd,
 531                                              1,
 532                                              &pitch,
 533                                              &offset,
 534                                              dri2_surf);
 535       if (!dri2_surf->dri_image_back) {
 536          _eglLog(_EGL_WARNING, "failed to create DRI image from FD");
 537          return -1;
 538       }
 539    } else if (dri2_surf->base.Type == EGL_PBUFFER_BIT) {
 540       /* The EGL 1.5 spec states that pbuffers are single-buffered. Specifically,
 541        * the spec states that they have a back buffer but no front buffer, in
 542        * contrast to pixmaps, which have a front buffer but no back buffer.
 543        *
 544        * Single-buffered surfaces with no front buffer confuse Mesa; so we deviate
 545        * from the spec, following the precedent of Mesa's EGL X11 platform. The
 546        * X11 platform correctly assigns pbuffers to single-buffered configs, but
 547        * assigns the pbuffer a front buffer instead of a back buffer.
 548        *
 549        * Pbuffers in the X11 platform mostly work today, so let's just copy its
 550        * behavior instead of trying to fix (and hence potentially breaking) the
 551        * world.
 552        */
 553       _eglLog(_EGL_DEBUG, "DRI driver requested unsupported back buffer for pbuffer surface");
 554    }
 555
 556    return 0;
 557 }
 558
 559 /* Some drivers will pass multiple bits in buffer_mask.
 560  * For such case, will go through all the bits, and
 561  * will not return error when unsupported buffer is requested, only
 562  * return error when the allocation for supported buffer failed.
 563  */
 564 static int
 565 droid_image_get_buffers(__DRIdrawable *driDrawable,
 566                   unsigned int format,
 567                   uint32_t *stamp,
 568                   void *loaderPrivate,
 569                   uint32_t buffer_mask,
 570                   struct __DRIimageList *images)
 571 {
 572    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 573
 574    images->image_mask = 0;
 575    images->front = NULL;
 576    images->back = NULL;
 577
 578    if (update_buffers(dri2_surf) < 0)
 579       return 0;
 580
 581    if (buffer_mask & __DRI_IMAGE_BUFFER_FRONT) {
 582       if (get_front_bo(dri2_surf, format) < 0)
 583          return 0;
 584
 585       if (dri2_surf->dri_image_front) {
 586          images->front = dri2_surf->dri_image_front;
 587          images->image_mask |= __DRI_IMAGE_BUFFER_FRONT;
 588       }
 589    }
 590
 591    if (buffer_mask & __DRI_IMAGE_BUFFER_BACK) {
 592       if (get_back_bo(dri2_surf, format) < 0)
 593          return 0;
 594
 595       if (dri2_surf->dri_image_back) {
 596          images->back = dri2_surf->dri_image_back;
 597          images->image_mask |= __DRI_IMAGE_BUFFER_BACK;
 598       }
 599    }
 600
 601    return 1;
 602 }
 603
 604 static EGLint
 605 droid_query_buffer_age(_EGLDriver *drv,
 606                           _EGLDisplay *disp, _EGLSurface *surface)
 607 {
 608    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 609
 610    if (update_buffers(dri2_surf) < 0) {
 611       _eglError(EGL_BAD_ALLOC, "droid_query_buffer_age");
 612       return 0;
 613    }
 614
 615    return dri2_surf->back->age;
 616 }
 617
 618 static EGLBoolean
 619 droid_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 620 {
 621    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 622    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 623
 624    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 625       return EGL_TRUE;
 626
 627    for (int i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 628       if (dri2_surf->color_buffers[i].age > 0)
 629          dri2_surf->color_buffers[i].age++;
 630    }
 631    dri2_surf->back->age = 1;
 632
 633    dri2_flush_drawable_for_swapbuffers(disp, draw);
 634
 635    /* dri2_surf->buffer can be null even when no error has occured. For
 636     * example, if the user has called no GL rendering commands since the
 637     * previous eglSwapBuffers, then the driver may have not triggered
 638     * a callback to ANativeWindow::dequeueBuffer, in which case
 639     * dri2_surf->buffer remains null.
 640     */
 641    if (dri2_surf->buffer)
 642       droid_window_enqueue_buffer(disp, dri2_surf);
 643
 644    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 645
 646    return EGL_TRUE;
 647 }
 648
 649 static _EGLImage *
 650 droid_create_image_from_prime_fd_yuv(_EGLDisplay *disp, _EGLContext *ctx,
 651                                      struct ANativeWindowBuffer *buf, int fd)
 652 {
 653    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 654    struct android_ycbcr ycbcr;
 655    size_t offsets[3];
 656    size_t pitches[3];
 657    int is_ycrcb;
 658    int fourcc;
 659    int ret;
 660
 661    if (!dri2_dpy->gralloc->lock_ycbcr) {
 662       _eglLog(_EGL_WARNING, "Gralloc does not support lock_ycbcr");
 663       return NULL;
 664    }
 665
 666    memset(&ycbcr, 0, sizeof(ycbcr));
 667    ret = dri2_dpy->gralloc->lock_ycbcr(dri2_dpy->gralloc, buf->handle,
 668                                        0, 0, 0, 0, 0, &ycbcr);
 669    if (ret) {
 670       _eglLog(_EGL_WARNING, "gralloc->lock_ycbcr failed: %d", ret);
 671       return NULL;
 672    }
 673    dri2_dpy->gralloc->unlock(dri2_dpy->gralloc, buf->handle);
 674
 675    /* When lock_ycbcr's usage argument contains no SW_READ/WRITE flags
 676     * it will return the .y/.cb/.cr pointers based on a NULL pointer,
 677     * so they can be interpreted as offsets. */
 678    offsets[0] = (size_t)ycbcr.y;
 679    /* We assume here that all the planes are located in one DMA-buf. */
 680    is_ycrcb = (size_t)ycbcr.cr < (size_t)ycbcr.cb;
 681    if (is_ycrcb) {
 682       offsets[1] = (size_t)ycbcr.cr;
 683       offsets[2] = (size_t)ycbcr.cb;
 684    } else {
 685       offsets[1] = (size_t)ycbcr.cb;
 686       offsets[2] = (size_t)ycbcr.cr;
 687    }
 688
 689    /* .ystride is the line length (in bytes) of the Y plane,
 690     * .cstride is the line length (in bytes) of any of the remaining
 691     * Cb/Cr/CbCr planes, assumed to be the same for Cb and Cr for fully
 692     * planar formats. */
 693    pitches[0] = ycbcr.ystride;
 694    pitches[1] = pitches[2] = ycbcr.cstride;
 695
 696    /* .chroma_step is the byte distance between the same chroma channel
 697     * values of subsequent pixels, assumed to be the same for Cb and Cr. */
 698    fourcc = get_fourcc_yuv(buf->format, is_ycrcb, ycbcr.chroma_step);
 699    if (fourcc == -1) {
 700       _eglLog(_EGL_WARNING, "unsupported YUV format, native = %x, is_ycrcb = %d, chroma_step = %d",
 701               buf->format, is_ycrcb, ycbcr.chroma_step);
 702       return NULL;
 703    }
 704
 705    if (ycbcr.chroma_step == 2) {
 706       /* Semi-planar Y + CbCr or Y + CbCr format. */
 707       const EGLint attr_list_2plane[] = {
 708          EGL_WIDTH, buf->width,
 709          EGL_HEIGHT, buf->height,
 710          EGL_LINUX_DRM_FOURCC_EXT, fourcc,
 711          EGL_DMA_BUF_PLANE0_FD_EXT, fd,
 712          EGL_DMA_BUF_PLANE0_PITCH_EXT, pitches[0],
 713          EGL_DMA_BUF_PLANE0_OFFSET_EXT, offsets[0],
 714          EGL_DMA_BUF_PLANE1_FD_EXT, fd,
 715          EGL_DMA_BUF_PLANE1_PITCH_EXT, pitches[1],
 716          EGL_DMA_BUF_PLANE1_OFFSET_EXT, offsets[1],
 717          EGL_NONE, 0
 718       };
 719
 720       return dri2_create_image_dma_buf(disp, ctx, NULL, attr_list_2plane);
 721    } else {
 722       /* Fully planar Y + Cb + Cr or Y + Cr + Cb format. */
 723       const EGLint attr_list_3plane[] = {
 724          EGL_WIDTH, buf->width,
 725          EGL_HEIGHT, buf->height,
 726          EGL_LINUX_DRM_FOURCC_EXT, fourcc,
 727          EGL_DMA_BUF_PLANE0_FD_EXT, fd,
 728          EGL_DMA_BUF_PLANE0_PITCH_EXT, pitches[0],
 729          EGL_DMA_BUF_PLANE0_OFFSET_EXT, offsets[0],
 730          EGL_DMA_BUF_PLANE1_FD_EXT, fd,
 731          EGL_DMA_BUF_PLANE1_PITCH_EXT, pitches[1],
 732          EGL_DMA_BUF_PLANE1_OFFSET_EXT, offsets[1],
 733          EGL_DMA_BUF_PLANE2_FD_EXT, fd,
 734          EGL_DMA_BUF_PLANE2_PITCH_EXT, pitches[2],
 735          EGL_DMA_BUF_PLANE2_OFFSET_EXT, offsets[2],
 736          EGL_NONE, 0
 737       };
 738
 739       return dri2_create_image_dma_buf(disp, ctx, NULL, attr_list_3plane);
 740    }
 741 }
 742
 743 static _EGLImage *
 744 droid_create_image_from_prime_fd(_EGLDisplay *disp, _EGLContext *ctx,
 745                                  struct ANativeWindowBuffer *buf, int fd)
 746 {
 747    unsigned int pitch;
 748
 749    if (is_yuv(buf->format))
 750       return droid_create_image_from_prime_fd_yuv(disp, ctx, buf, fd);
 751
 752    const int fourcc = get_fourcc(buf->format);
 753    if (fourcc == -1) {
 754       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 755       return NULL;
 756    }
 757
 758    pitch = buf->stride * get_format_bpp(buf->format);
 759    if (pitch == 0) {
 760       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 761       return NULL;
 762    }
 763
 764    const EGLint attr_list[] = {
 765       EGL_WIDTH, buf->width,
 766       EGL_HEIGHT, buf->height,
 767       EGL_LINUX_DRM_FOURCC_EXT, fourcc,
 768       EGL_DMA_BUF_PLANE0_FD_EXT, fd,
 769       EGL_DMA_BUF_PLANE0_PITCH_EXT, pitch,
 770       EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
 771       EGL_NONE, 0
 772    };
 773
 774    return dri2_create_image_dma_buf(disp, ctx, NULL, attr_list);
 775 }
 776
 777 static _EGLImage *
 778 droid_create_image_from_name(_EGLDisplay *disp, _EGLContext *ctx,
 779                              struct ANativeWindowBuffer *buf)
 780 {
 781    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 782    struct dri2_egl_image *dri2_img;
 783    int name;
 784    int format;
 785
 786    name = get_native_buffer_name(buf);
 787    if (!name) {
 788       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 789       return NULL;
 790    }
 791
 792    format = get_format(buf->format);
 793    if (format == -1)
 794        return NULL;
 795
 796    dri2_img = calloc(1, sizeof(*dri2_img));
 797    if (!dri2_img) {
 798       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 799       return NULL;
 800    }
 801
 802    if (!_eglInitImage(&dri2_img->base, disp)) {
 803       free(dri2_img);
 804       return NULL;
 805    }
 806
 807    dri2_img->dri_image =
 808       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
 809                                            buf->width,
 810                                            buf->height,
 811                                            format,
 812                                            name,
 813                                            buf->stride,
 814                                            dri2_img);
 815    if (!dri2_img->dri_image) {
 816       free(dri2_img);
 817       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 818       return NULL;
 819    }
 820
 821    return &dri2_img->base;
 822 }
 823
 824 static EGLBoolean
 825 droid_query_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 826                     EGLint attribute, EGLint *value)
 827 {
 828    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 829    switch (attribute) {
 830       case EGL_WIDTH:
 831          if (dri2_surf->base.Type == EGL_WINDOW_BIT && dri2_surf->window) {
 832             dri2_surf->window->query(dri2_surf->window,
 833                                      NATIVE_WINDOW_DEFAULT_WIDTH, value);
 834             return EGL_TRUE;
 835          }
 836          break;
 837       case EGL_HEIGHT:
 838          if (dri2_surf->base.Type == EGL_WINDOW_BIT && dri2_surf->window) {
 839             dri2_surf->window->query(dri2_surf->window,
 840                                      NATIVE_WINDOW_DEFAULT_HEIGHT, value);
 841             return EGL_TRUE;
 842          }
 843          break;
 844       default:
 845          break;
 846    }
 847    return _eglQuerySurface(drv, dpy, surf, attribute, value);
 848 }
 849
 850 static _EGLImage *
 851 dri2_create_image_android_native_buffer(_EGLDisplay *disp,
 852                                         _EGLContext *ctx,
 853                                         struct ANativeWindowBuffer *buf)
 854 {
 855    int fd;
 856
 857    if (ctx != NULL) {
 858       /* From the EGL_ANDROID_image_native_buffer spec:
 859        *
 860        *     * If <target> is EGL_NATIVE_BUFFER_ANDROID and <ctx> is not
 861        *       EGL_NO_CONTEXT, the error EGL_BAD_CONTEXT is generated.
 862        */
 863       _eglError(EGL_BAD_CONTEXT, "eglCreateEGLImageKHR: for "
 864                 "EGL_NATIVE_BUFFER_ANDROID, the context must be "
 865                 "EGL_NO_CONTEXT");
 866       return NULL;
 867    }
 868
 869    if (!buf || buf->common.magic != ANDROID_NATIVE_BUFFER_MAGIC ||
 870        buf->common.version != sizeof(*buf)) {
 871       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 872       return NULL;
 873    }
 874
 875    fd = get_native_buffer_fd(buf);
 876    if (fd >= 0)
 877       return droid_create_image_from_prime_fd(disp, ctx, buf, fd);
 878
 879    return droid_create_image_from_name(disp, ctx, buf);
 880 }
 881
 882 static _EGLImage *
 883 droid_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 884                        _EGLContext *ctx, EGLenum target,
 885                        EGLClientBuffer buffer, const EGLint *attr_list)
 886 {
 887    switch (target) {
 888    case EGL_NATIVE_BUFFER_ANDROID:
 889       return dri2_create_image_android_native_buffer(disp, ctx,
 890             (struct ANativeWindowBuffer *) buffer);
 891    default:
 892       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 893    }
 894 }
 895
 896 static void
 897 droid_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 898 {
 899 }
 900
 901 static int
 902 droid_get_buffers_parse_attachments(struct dri2_egl_surface *dri2_surf,
 903                                     unsigned int *attachments, int count)
 904 {
 905    int num_buffers = 0, i;
 906
 907    /* fill dri2_surf->buffers */
 908    for (i = 0; i < count * 2; i += 2) {
 909       __DRIbuffer *buf, *local;
 910
 911       assert(num_buffers < ARRAY_SIZE(dri2_surf->buffers));
 912       buf = &dri2_surf->buffers[num_buffers];
 913
 914       switch (attachments[i]) {
 915       case __DRI_BUFFER_BACK_LEFT:
 916          if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 917             buf->attachment = attachments[i];
 918             buf->name = get_native_buffer_name(dri2_surf->buffer);
 919             buf->cpp = get_format_bpp(dri2_surf->buffer->format);
 920             buf->pitch = dri2_surf->buffer->stride * buf->cpp;
 921             buf->flags = 0;
 922
 923             if (buf->name)
 924                num_buffers++;
 925
 926             break;
 927          }
 928          /* fall through for pbuffers */
 929       case __DRI_BUFFER_DEPTH:
 930       case __DRI_BUFFER_STENCIL:
 931       case __DRI_BUFFER_ACCUM:
 932       case __DRI_BUFFER_DEPTH_STENCIL:
 933       case __DRI_BUFFER_HIZ:
 934          local = droid_alloc_local_buffer(dri2_surf,
 935                attachments[i], attachments[i + 1]);
 936
 937          if (local) {
 938             *buf = *local;
 939             num_buffers++;
 940          }
 941          break;
 942       case __DRI_BUFFER_FRONT_LEFT:
 943       case __DRI_BUFFER_FRONT_RIGHT:
 944       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 945       case __DRI_BUFFER_FAKE_FRONT_RIGHT:
 946       case __DRI_BUFFER_BACK_RIGHT:
 947       default:
 948          /* no front or right buffers */
 949          break;
 950       }
 951    }
 952
 953    return num_buffers;
 954 }
 955
 956 static __DRIbuffer *
 957 droid_get_buffers_with_format(__DRIdrawable * driDrawable,
 958                              int *width, int *height,
 959                              unsigned int *attachments, int count,
 960                              int *out_count, void *loaderPrivate)
 961 {
 962    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 963
 964    if (update_buffers(dri2_surf) < 0)
 965       return NULL;
 966
 967    dri2_surf->buffer_count =
 968       droid_get_buffers_parse_attachments(dri2_surf, attachments, count);
 969
 970    if (width)
 971       *width = dri2_surf->base.Width;
 972    if (height)
 973       *height = dri2_surf->base.Height;
 974
 975    *out_count = dri2_surf->buffer_count;
 976
 977    return dri2_surf->buffers;
 978 }
 979
 980 static EGLBoolean
 981 droid_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *dpy)
 982 {
 983    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
 984    static const struct {
 985       int format;
 986       unsigned int rgba_masks[4];
 987    } visuals[] = {
 988       { HAL_PIXEL_FORMAT_RGBA_8888, { 0xff, 0xff00, 0xff0000, 0xff000000 } },
 989       { HAL_PIXEL_FORMAT_RGBX_8888, { 0xff, 0xff00, 0xff0000, 0x0 } },
 990       { HAL_PIXEL_FORMAT_RGB_565,   { 0xf800, 0x7e0, 0x1f, 0x0 } },
 991       { HAL_PIXEL_FORMAT_BGRA_8888, { 0xff0000, 0xff00, 0xff, 0xff000000 } },
 992    };
 993    EGLint config_attrs[] = {
 994      EGL_NATIVE_VISUAL_ID,   0,
 995      EGL_NATIVE_VISUAL_TYPE, 0,
 996      EGL_FRAMEBUFFER_TARGET_ANDROID, EGL_TRUE,
 997      EGL_RECORDABLE_ANDROID, EGL_TRUE,
 998      EGL_NONE
 999    };
1000    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
1001    int count, i, j;
1002
1003    count = 0;
1004    for (i = 0; dri2_dpy->driver_configs[i]; i++) {
1005       const EGLint surface_type = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
1006       struct dri2_egl_config *dri2_conf;
1007
1008       for (j = 0; j < ARRAY_SIZE(visuals); j++) {
1009          config_attrs[1] = visuals[j].format;
1010          config_attrs[3] = visuals[j].format;
1011
1012          dri2_conf = dri2_add_config(dpy, dri2_dpy->driver_configs[i],
1013                count + 1, surface_type, config_attrs, visuals[j].rgba_masks);
1014          if (dri2_conf) {
1015             count++;
1016             format_count[j]++;
1017          }
1018       }
1019    }
1020
1021    for (i = 0; i < ARRAY_SIZE(format_count); i++) {
1022       if (!format_count[i]) {
1023          _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x",
1024                  visuals[i].format);
1025       }
1026    }
1027
1028    return (count != 0);
1029 }
1030
1031 static int
1032 droid_open_device(struct dri2_egl_display *dri2_dpy)
1033 {
1034    int fd = -1, err = -EINVAL;
1035
1036    if (dri2_dpy->gralloc->perform)
1037          err = dri2_dpy->gralloc->perform(dri2_dpy->gralloc,
1038                                           GRALLOC_MODULE_PERFORM_GET_DRM_FD,
1039                                           &fd);
1040    if (err || fd < 0) {
1041       _eglLog(_EGL_WARNING, "fail to get drm fd");
1042       fd = -1;
1043    }
1044
1045    return (fd >= 0) ? fcntl(fd, F_DUPFD_CLOEXEC, 3) : -1;
1046 }
1047
1048 /* support versions < JellyBean */
1049 #ifndef ALOGW
1050 #define ALOGW LOGW
1051 #endif
1052 #ifndef ALOGD
1053 #define ALOGD LOGD
1054 #endif
1055 #ifndef ALOGI
1056 #define ALOGI LOGI
1057 #endif
1058
1059 static void
1060 droid_log(EGLint level, const char *msg)
1061 {
1062    switch (level) {
1063    case _EGL_DEBUG:
1064       ALOGD("%s", msg);
1065       break;
1066    case _EGL_INFO:
1067       ALOGI("%s", msg);
1068       break;
1069    case _EGL_WARNING:
1070       ALOGW("%s", msg);
1071       break;
1072    case _EGL_FATAL:
1073       LOG_FATAL("%s", msg);
1074       break;
1075    default:
1076       break;
1077    }
1078 }
1079
1080 static struct dri2_egl_display_vtbl droid_display_vtbl = {
1081    .authenticate = NULL,
1082    .create_window_surface = droid_create_window_surface,
1083    .create_pixmap_surface = dri2_fallback_create_pixmap_surface,
1084    .create_pbuffer_surface = droid_create_pbuffer_surface,
1085    .destroy_surface = droid_destroy_surface,
1086    .create_image = droid_create_image_khr,
1087    .swap_interval = dri2_fallback_swap_interval,
1088    .swap_buffers = droid_swap_buffers,
1089    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1090    .swap_buffers_region = dri2_fallback_swap_buffers_region,
1091    .post_sub_buffer = dri2_fallback_post_sub_buffer,
1092    .copy_buffers = dri2_fallback_copy_buffers,
1093    .query_buffer_age = droid_query_buffer_age,
1094    .query_surface = droid_query_surface,
1095    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1096    .get_sync_values = dri2_fallback_get_sync_values,
1097    .get_dri_drawable = dri2_surface_get_dri_drawable,
1098 };
1099
1100 static const __DRIdri2LoaderExtension droid_dri2_loader_extension = {
1101    .base = { __DRI_DRI2_LOADER, 3 },
1102
1103    .getBuffers           = NULL,
1104    .flushFrontBuffer     = droid_flush_front_buffer,
1105    .getBuffersWithFormat = droid_get_buffers_with_format,
1106 };
1107
1108 static const __DRIimageLoaderExtension droid_image_loader_extension = {
1109    .base = { __DRI_IMAGE_LOADER, 1 },
1110
1111    .getBuffers          = droid_image_get_buffers,
1112    .flushFrontBuffer    = droid_flush_front_buffer,
1113 };
1114
1115 static const __DRIextension *droid_dri2_loader_extensions[] = {
1116    &droid_dri2_loader_extension.base,
1117    &image_lookup_extension.base,
1118    &use_invalidate.base,
1119    NULL,
1120 };
1121
1122 static const __DRIextension *droid_image_loader_extensions[] = {
1123    &droid_image_loader_extension.base,
1124    &image_lookup_extension.base,
1125    &use_invalidate.base,
1126    NULL,
1127 };
1128
1129 EGLBoolean
1130 dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *dpy)
1131 {
1132    struct dri2_egl_display *dri2_dpy;
1133    const char *err;
1134    int ret;
1135
1136    _eglSetLogProc(droid_log);
1137
1138    loader_set_logger(_eglLog);
1139
1140    dri2_dpy = calloc(1, sizeof(*dri2_dpy));
1141    if (!dri2_dpy)
1142       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1143
1144    ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
1145                        (const hw_module_t **)&dri2_dpy->gralloc);
1146    if (ret) {
1147       err = "DRI2: failed to get gralloc module";
1148       goto cleanup_display;
1149    }
1150
1151    dpy->DriverData = (void *) dri2_dpy;
1152
1153    dri2_dpy->fd = droid_open_device(dri2_dpy);
1154    if (dri2_dpy->fd < 0) {
1155       err = "DRI2: failed to open device";
1156       goto cleanup_display;
1157    }
1158
1159    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
1160    if (dri2_dpy->driver_name == NULL) {
1161       err = "DRI2: failed to get driver name";
1162       goto cleanup_device;
1163    }
1164
1165    if (!dri2_load_driver(dpy)) {
1166       err = "DRI2: failed to load driver";
1167       goto cleanup_driver_name;
1168    }
1169
1170    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
1171
1172    /* render nodes cannot use Gem names, and thus do not support
1173     * the __DRI_DRI2_LOADER extension */
1174    if (!dri2_dpy->is_render_node)
1175       dri2_dpy->loader_extensions = droid_dri2_loader_extensions;
1176    else
1177       dri2_dpy->loader_extensions = droid_image_loader_extensions;
1178
1179    if (!dri2_create_screen(dpy)) {
1180       err = "DRI2: failed to create screen";
1181       goto cleanup_driver;
1182    }
1183
1184    if (!droid_add_configs_for_visuals(drv, dpy)) {
1185       err = "DRI2: failed to add configs";
1186       goto cleanup_screen;
1187    }
1188
1189    dpy->Extensions.ANDROID_framebuffer_target = EGL_TRUE;
1190    dpy->Extensions.ANDROID_image_native_buffer = EGL_TRUE;
1191    dpy->Extensions.ANDROID_recordable = EGL_TRUE;
1192    dpy->Extensions.EXT_buffer_age = EGL_TRUE;
1193
1194    /* Fill vtbl last to prevent accidentally calling virtual function during
1195     * initialization.
1196     */
1197    dri2_dpy->vtbl = &droid_display_vtbl;
1198
1199    return EGL_TRUE;
1200
1201 cleanup_screen:
1202    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1203 cleanup_driver:
1204    dlclose(dri2_dpy->driver);
1205 cleanup_driver_name:
1206    free(dri2_dpy->driver_name);
1207 cleanup_device:
1208    close(dri2_dpy->fd);
1209 cleanup_display:
1210    free(dri2_dpy);
1211    dpy->DriverData = NULL;
1212
1213    return _eglError(EGL_NOT_INITIALIZED, err);
1214 }