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 <xf86drm.h>
  33
  34 #if ANDROID_VERSION >= 0x402
  35 #include <sync/sync.h>
  36 #endif
  37
  38 #include "loader.h"
  39 #include "egl_dri2.h"
  40 #include "egl_dri2_fallbacks.h"
  41 #include "gralloc_drm.h"
  42
  43 static int
  44 get_format_bpp(int native)
  45 {
  46    int bpp;
  47
  48    switch (native) {
  49    case HAL_PIXEL_FORMAT_RGBA_8888:
  50    case HAL_PIXEL_FORMAT_RGBX_8888:
  51    case HAL_PIXEL_FORMAT_BGRA_8888:
  52       bpp = 4;
  53       break;
  54    case HAL_PIXEL_FORMAT_RGB_888:
  55       bpp = 3;
  56       break;
  57    case HAL_PIXEL_FORMAT_RGB_565:
  58       bpp = 2;
  59       break;
  60    default:
  61       bpp = 0;
  62       break;
  63    }
  64
  65    return bpp;
  66 }
  67
  68 /* createImageFromFds requires fourcc format */
  69 static int get_fourcc(int format)
  70 {
  71    switch(format) {
  72    case __DRI_IMAGE_FORMAT_RGB565:   return __DRI_IMAGE_FOURCC_RGB565;
  73    case __DRI_IMAGE_FORMAT_ARGB8888: return __DRI_IMAGE_FOURCC_ARGB8888;
  74    case __DRI_IMAGE_FORMAT_XRGB8888: return __DRI_IMAGE_FOURCC_XRGB8888;
  75    case __DRI_IMAGE_FORMAT_ABGR8888: return __DRI_IMAGE_FOURCC_ABGR8888;
  76    case __DRI_IMAGE_FORMAT_XBGR8888: return __DRI_IMAGE_FOURCC_XBGR8888;
  77    }
  78    return -1;
  79 }
  80
  81 static int get_format(int format)
  82 {
  83    switch (format) {
  84    case HAL_PIXEL_FORMAT_BGRA_8888: return __DRI_IMAGE_FORMAT_ARGB8888;
  85    case HAL_PIXEL_FORMAT_RGB_565:   return __DRI_IMAGE_FORMAT_RGB565;
  86    case HAL_PIXEL_FORMAT_RGBA_8888: return __DRI_IMAGE_FORMAT_ABGR8888;
  87    case HAL_PIXEL_FORMAT_RGBX_8888: return __DRI_IMAGE_FORMAT_XBGR8888;
  88    case HAL_PIXEL_FORMAT_RGB_888:
  89       /* unsupported */
  90    default:
  91       _eglLog(_EGL_WARNING, "unsupported native buffer format 0x%x", format);
  92    }
  93    return -1;
  94 }
  95 static int
  96 get_native_buffer_fd(struct ANativeWindowBuffer *buf)
  97 {
  98    native_handle_t *handle = (native_handle_t *)buf->handle;
  99    /*
 100     * Various gralloc implementations exist, but the dma-buf fd tends
 101     * to be first. Access it directly to avoid a dependency on specific
 102     * gralloc versions.
 103     */
 104    return (handle && handle->numFds) ? handle->data[0] : -1;
 105 }
 106
 107 static int
 108 get_native_buffer_name(struct ANativeWindowBuffer *buf)
 109 {
 110    return gralloc_drm_get_gem_handle(buf->handle);
 111 }
 112
 113 static EGLBoolean
 114 droid_window_dequeue_buffer(struct dri2_egl_surface *dri2_surf)
 115 {
 116 #if ANDROID_VERSION >= 0x0402
 117    int fence_fd;
 118
 119    if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer,
 120                                         &fence_fd))
 121       return EGL_FALSE;
 122
 123    /* If access to the buffer is controlled by a sync fence, then block on the
 124     * fence.
 125     *
 126     * It may be more performant to postpone blocking until there is an
 127     * immediate need to write to the buffer. But doing so would require adding
 128     * hooks to the DRI2 loader.
 129     *
 130     * From the ANativeWindow::dequeueBuffer documentation:
 131     *
 132     *    The libsync fence file descriptor returned in the int pointed to by
 133     *    the fenceFd argument will refer to the fence that must signal
 134     *    before the dequeued buffer may be written to.  A value of -1
 135     *    indicates that the caller may access the buffer immediately without
 136     *    waiting on a fence.  If a valid file descriptor is returned (i.e.
 137     *    any value except -1) then the caller is responsible for closing the
 138     *    file descriptor.
 139     */
 140     if (fence_fd >= 0) {
 141        /* From the SYNC_IOC_WAIT documentation in <linux/sync.h>:
 142         *
 143         *    Waits indefinitely if timeout < 0.
 144         */
 145         int timeout = -1;
 146         sync_wait(fence_fd, timeout);
 147         close(fence_fd);
 148    }
 149
 150    dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);
 151 #else
 152    if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer))
 153       return EGL_FALSE;
 154
 155    dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);
 156    dri2_surf->window->lockBuffer(dri2_surf->window, dri2_surf->buffer);
 157 #endif
 158
 159    return EGL_TRUE;
 160 }
 161
 162 static EGLBoolean
 163 droid_window_enqueue_buffer(_EGLDisplay *disp, struct dri2_egl_surface *dri2_surf)
 164 {
 165    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 166
 167    /* To avoid blocking other EGL calls, release the display mutex before
 168     * we enter droid_window_enqueue_buffer() and re-acquire the mutex upon
 169     * return.
 170     */
 171    mtx_unlock(&disp->Mutex);
 172
 173 #if ANDROID_VERSION >= 0x0402
 174    /* Queue the buffer without a sync fence. This informs the ANativeWindow
 175     * that it may access the buffer immediately.
 176     *
 177     * From ANativeWindow::dequeueBuffer:
 178     *
 179     *    The fenceFd argument specifies a libsync fence file descriptor for
 180     *    a fence that must signal before the buffer can be accessed.  If
 181     *    the buffer can be accessed immediately then a value of -1 should
 182     *    be used.  The caller must not use the file descriptor after it
 183     *    is passed to queueBuffer, and the ANativeWindow implementation
 184     *    is responsible for closing it.
 185     */
 186    int fence_fd = -1;
 187    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer,
 188                                   fence_fd);
 189 #else
 190    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer);
 191 #endif
 192
 193    dri2_surf->buffer->common.decRef(&dri2_surf->buffer->common);
 194    dri2_surf->buffer = NULL;
 195
 196    mtx_lock(&disp->Mutex);
 197
 198    if (dri2_surf->dri_image) {
 199       dri2_dpy->image->destroyImage(dri2_surf->dri_image);
 200       dri2_surf->dri_image = NULL;
 201    }
 202
 203    return EGL_TRUE;
 204 }
 205
 206 static void
 207 droid_window_cancel_buffer(_EGLDisplay *disp, struct dri2_egl_surface *dri2_surf)
 208 {
 209    /* no cancel buffer? */
 210    droid_window_enqueue_buffer(disp, dri2_surf);
 211 }
 212
 213 static __DRIbuffer *
 214 droid_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
 215                          unsigned int att, unsigned int format)
 216 {
 217    struct dri2_egl_display *dri2_dpy =
 218       dri2_egl_display(dri2_surf->base.Resource.Display);
 219
 220    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
 221       return NULL;
 222
 223    if (!dri2_surf->local_buffers[att]) {
 224       dri2_surf->local_buffers[att] =
 225          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
 226                dri2_surf->base.Width, dri2_surf->base.Height);
 227    }
 228
 229    return dri2_surf->local_buffers[att];
 230 }
 231
 232 static void
 233 droid_free_local_buffers(struct dri2_egl_surface *dri2_surf)
 234 {
 235    struct dri2_egl_display *dri2_dpy =
 236       dri2_egl_display(dri2_surf->base.Resource.Display);
 237    int i;
 238
 239    for (i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
 240       if (dri2_surf->local_buffers[i]) {
 241          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 242                dri2_surf->local_buffers[i]);
 243          dri2_surf->local_buffers[i] = NULL;
 244       }
 245    }
 246 }
 247
 248 static _EGLSurface *
 249 droid_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 250                     _EGLConfig *conf, void *native_window,
 251                     const EGLint *attrib_list)
 252 {
 253    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 254    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 255    struct dri2_egl_surface *dri2_surf;
 256    struct ANativeWindow *window = native_window;
 257    const __DRIconfig *config;
 258
 259    dri2_surf = calloc(1, sizeof *dri2_surf);
 260    if (!dri2_surf) {
 261       _eglError(EGL_BAD_ALLOC, "droid_create_surface");
 262       return NULL;
 263    }
 264
 265    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 266       goto cleanup_surface;
 267
 268    if (type == EGL_WINDOW_BIT) {
 269       int format;
 270
 271       if (!window || window->common.magic != ANDROID_NATIVE_WINDOW_MAGIC) {
 272          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 273          goto cleanup_surface;
 274       }
 275       if (window->query(window, NATIVE_WINDOW_FORMAT, &format)) {
 276          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 277          goto cleanup_surface;
 278       }
 279
 280       if (format != dri2_conf->base.NativeVisualID) {
 281          _eglLog(_EGL_WARNING, "Native format mismatch: 0x%x != 0x%x",
 282                format, dri2_conf->base.NativeVisualID);
 283       }
 284
 285       window->query(window, NATIVE_WINDOW_WIDTH, &dri2_surf->base.Width);
 286       window->query(window, NATIVE_WINDOW_HEIGHT, &dri2_surf->base.Height);
 287    }
 288
 289    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 290                                 dri2_surf->base.GLColorspace);
 291    if (!config)
 292       goto cleanup_surface;
 293
 294    dri2_surf->dri_drawable =
 295       (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen, config,
 296                                            dri2_surf);
 297    if (dri2_surf->dri_drawable == NULL) {
 298       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 299       goto cleanup_surface;
 300    }
 301
 302    if (window) {
 303       window->common.incRef(&window->common);
 304       dri2_surf->window = window;
 305    }
 306
 307    return &dri2_surf->base;
 308
 309 cleanup_surface:
 310    free(dri2_surf);
 311
 312    return NULL;
 313 }
 314
 315 static _EGLSurface *
 316 droid_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 317                             _EGLConfig *conf, void *native_window,
 318                             const EGLint *attrib_list)
 319 {
 320    return droid_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 321                                native_window, attrib_list);
 322 }
 323
 324 static _EGLSurface *
 325 droid_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 326                             _EGLConfig *conf, const EGLint *attrib_list)
 327 {
 328    return droid_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 329                               NULL, attrib_list);
 330 }
 331
 332 static EGLBoolean
 333 droid_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 334 {
 335    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 336    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 337
 338    if (!_eglPutSurface(surf))
 339       return EGL_TRUE;
 340
 341    droid_free_local_buffers(dri2_surf);
 342
 343    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 344       if (dri2_surf->buffer)
 345          droid_window_cancel_buffer(disp, dri2_surf);
 346
 347       dri2_surf->window->common.decRef(&dri2_surf->window->common);
 348    }
 349
 350    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 351
 352    free(dri2_surf);
 353
 354    return EGL_TRUE;
 355 }
 356
 357 static int
 358 update_buffers(struct dri2_egl_surface *dri2_surf)
 359 {
 360    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 361       return 0;
 362
 363    /* try to dequeue the next back buffer */
 364    if (!dri2_surf->buffer && !droid_window_dequeue_buffer(dri2_surf)) {
 365       _eglLog(_EGL_WARNING, "Could not dequeue buffer from native window");
 366       return -1;
 367    }
 368
 369    /* free outdated buffers and update the surface size */
 370    if (dri2_surf->base.Width != dri2_surf->buffer->width ||
 371        dri2_surf->base.Height != dri2_surf->buffer->height) {
 372       droid_free_local_buffers(dri2_surf);
 373       dri2_surf->base.Width = dri2_surf->buffer->width;
 374       dri2_surf->base.Height = dri2_surf->buffer->height;
 375    }
 376
 377    return 0;
 378 }
 379
 380 static int
 381 get_back_bo(struct dri2_egl_surface *dri2_surf)
 382 {
 383    struct dri2_egl_display *dri2_dpy =
 384       dri2_egl_display(dri2_surf->base.Resource.Display);
 385    int fourcc, pitch;
 386    int offset = 0, fd;
 387
 388    if (dri2_surf->dri_image)
 389            return 0;
 390
 391    if (!dri2_surf->buffer)
 392       return -1;
 393
 394    fd = get_native_buffer_fd(dri2_surf->buffer);
 395    if (fd < 0) {
 396       _eglLog(_EGL_WARNING, "Could not get native buffer FD");
 397       return -1;
 398    }
 399
 400    fourcc = get_fourcc(get_format(dri2_surf->buffer->format));
 401
 402    pitch = dri2_surf->buffer->stride *
 403       get_format_bpp(dri2_surf->buffer->format);
 404
 405    if (fourcc == -1 || pitch == 0) {
 406       _eglLog(_EGL_WARNING, "Invalid buffer fourcc(%x) or pitch(%d)",
 407               fourcc, pitch);
 408       return -1;
 409    }
 410
 411    dri2_surf->dri_image =
 412       dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
 413                                           dri2_surf->base.Width,
 414                                           dri2_surf->base.Height,
 415                                           fourcc,
 416                                           &fd,
 417                                           1,
 418                                           &pitch,
 419                                           &offset,
 420                                           dri2_surf);
 421    if (!dri2_surf->dri_image)
 422       return -1;
 423
 424    return 0;
 425 }
 426
 427 static int
 428 droid_image_get_buffers(__DRIdrawable *driDrawable,
 429                   unsigned int format,
 430                   uint32_t *stamp,
 431                   void *loaderPrivate,
 432                   uint32_t buffer_mask,
 433                   struct __DRIimageList *images)
 434 {
 435    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 436
 437    if (update_buffers(dri2_surf) < 0)
 438       return 0;
 439
 440    if (get_back_bo(dri2_surf) < 0) {
 441       _eglError(EGL_BAD_PARAMETER, "get_back_bo");
 442       return 0;
 443    }
 444
 445    images->image_mask = __DRI_IMAGE_BUFFER_BACK;
 446    images->back = dri2_surf->dri_image;
 447
 448    return 1;
 449 }
 450
 451 static EGLBoolean
 452 droid_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 453 {
 454    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 455    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 456
 457    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 458       return EGL_TRUE;
 459
 460    dri2_flush_drawable_for_swapbuffers(disp, draw);
 461
 462    if (dri2_surf->buffer)
 463       droid_window_enqueue_buffer(disp, dri2_surf);
 464
 465    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 466
 467    return EGL_TRUE;
 468 }
 469
 470 static _EGLImage *
 471 dri2_create_image_android_native_buffer(_EGLDisplay *disp,
 472                                         _EGLContext *ctx,
 473                                         struct ANativeWindowBuffer *buf)
 474 {
 475    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 476    struct dri2_egl_image *dri2_img;
 477    int name, fd;
 478    int format;
 479
 480    if (ctx != NULL) {
 481       /* From the EGL_ANDROID_image_native_buffer spec:
 482        *
 483        *     * If <target> is EGL_NATIVE_BUFFER_ANDROID and <ctx> is not
 484        *       EGL_NO_CONTEXT, the error EGL_BAD_CONTEXT is generated.
 485        */
 486       _eglError(EGL_BAD_CONTEXT, "eglCreateEGLImageKHR: for "
 487                 "EGL_NATIVE_BUFFER_ANDROID, the context must be "
 488                 "EGL_NO_CONTEXT");
 489       return NULL;
 490    }
 491
 492    if (!buf || buf->common.magic != ANDROID_NATIVE_BUFFER_MAGIC ||
 493        buf->common.version != sizeof(*buf)) {
 494       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 495       return NULL;
 496    }
 497
 498    fd = get_native_buffer_fd(buf);
 499    if (fd >= 0) {
 500       const int fourcc = get_fourcc(get_format(buf->format));
 501       const int pitch = buf->stride * get_format_bpp(buf->format);
 502
 503       const EGLint attr_list[14] = {
 504          EGL_WIDTH, buf->width,
 505          EGL_HEIGHT, buf->height,
 506          EGL_LINUX_DRM_FOURCC_EXT, fourcc,
 507          EGL_DMA_BUF_PLANE0_FD_EXT, fd,
 508          EGL_DMA_BUF_PLANE0_PITCH_EXT, pitch,
 509          EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
 510          EGL_NONE, 0
 511       };
 512
 513       if (fourcc == -1 || pitch == 0)
 514          return NULL;
 515
 516       return dri2_create_image_dma_buf(disp, ctx, NULL, attr_list);
 517    }
 518
 519    name = get_native_buffer_name(buf);
 520    if (!name) {
 521       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 522       return NULL;
 523    }
 524
 525    format = get_format(buf->format);
 526    if (format == -1)
 527        return NULL;
 528
 529    dri2_img = calloc(1, sizeof(*dri2_img));
 530    if (!dri2_img) {
 531       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 532       return NULL;
 533    }
 534
 535    if (!_eglInitImage(&dri2_img->base, disp)) {
 536       free(dri2_img);
 537       return NULL;
 538    }
 539
 540    dri2_img->dri_image =
 541       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
 542                                            buf->width,
 543                                            buf->height,
 544                                            format,
 545                                            name,
 546                                            buf->stride,
 547                                            dri2_img);
 548    if (!dri2_img->dri_image) {
 549       free(dri2_img);
 550       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 551       return NULL;
 552    }
 553
 554    return &dri2_img->base;
 555 }
 556
 557 static _EGLImage *
 558 droid_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 559                        _EGLContext *ctx, EGLenum target,
 560                        EGLClientBuffer buffer, const EGLint *attr_list)
 561 {
 562    switch (target) {
 563    case EGL_NATIVE_BUFFER_ANDROID:
 564       return dri2_create_image_android_native_buffer(disp, ctx,
 565             (struct ANativeWindowBuffer *) buffer);
 566    default:
 567       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 568    }
 569 }
 570
 571 static void
 572 droid_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 573 {
 574 }
 575
 576 static int
 577 droid_get_buffers_parse_attachments(struct dri2_egl_surface *dri2_surf,
 578                                     unsigned int *attachments, int count)
 579 {
 580    int num_buffers = 0, i;
 581
 582    /* fill dri2_surf->buffers */
 583    for (i = 0; i < count * 2; i += 2) {
 584       __DRIbuffer *buf, *local;
 585
 586       assert(num_buffers < ARRAY_SIZE(dri2_surf->buffers));
 587       buf = &dri2_surf->buffers[num_buffers];
 588
 589       switch (attachments[i]) {
 590       case __DRI_BUFFER_BACK_LEFT:
 591          if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 592             buf->attachment = attachments[i];
 593             buf->name = get_native_buffer_name(dri2_surf->buffer);
 594             buf->cpp = get_format_bpp(dri2_surf->buffer->format);
 595             buf->pitch = dri2_surf->buffer->stride * buf->cpp;
 596             buf->flags = 0;
 597
 598             if (buf->name)
 599                num_buffers++;
 600
 601             break;
 602          }
 603          /* fall through for pbuffers */
 604       case __DRI_BUFFER_DEPTH:
 605       case __DRI_BUFFER_STENCIL:
 606       case __DRI_BUFFER_ACCUM:
 607       case __DRI_BUFFER_DEPTH_STENCIL:
 608       case __DRI_BUFFER_HIZ:
 609          local = droid_alloc_local_buffer(dri2_surf,
 610                attachments[i], attachments[i + 1]);
 611
 612          if (local) {
 613             *buf = *local;
 614             num_buffers++;
 615          }
 616          break;
 617       case __DRI_BUFFER_FRONT_LEFT:
 618       case __DRI_BUFFER_FRONT_RIGHT:
 619       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 620       case __DRI_BUFFER_FAKE_FRONT_RIGHT:
 621       case __DRI_BUFFER_BACK_RIGHT:
 622       default:
 623          /* no front or right buffers */
 624          break;
 625       }
 626    }
 627
 628    return num_buffers;
 629 }
 630
 631 static __DRIbuffer *
 632 droid_get_buffers_with_format(__DRIdrawable * driDrawable,
 633                              int *width, int *height,
 634                              unsigned int *attachments, int count,
 635                              int *out_count, void *loaderPrivate)
 636 {
 637    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 638    struct dri2_egl_display *dri2_dpy =
 639       dri2_egl_display(dri2_surf->base.Resource.Display);
 640    int i;
 641
 642    if (update_buffers(dri2_surf) < 0)
 643       return NULL;
 644
 645    dri2_surf->buffer_count =
 646       droid_get_buffers_parse_attachments(dri2_surf, attachments, count);
 647
 648    if (width)
 649       *width = dri2_surf->base.Width;
 650    if (height)
 651       *height = dri2_surf->base.Height;
 652
 653    *out_count = dri2_surf->buffer_count;
 654
 655    return dri2_surf->buffers;
 656 }
 657
 658 static EGLBoolean
 659 droid_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *dpy)
 660 {
 661    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
 662    const struct {
 663       int format;
 664       unsigned int rgba_masks[4];
 665    } visuals[] = {
 666       { HAL_PIXEL_FORMAT_RGBA_8888, { 0xff, 0xff00, 0xff0000, 0xff000000 } },
 667       { HAL_PIXEL_FORMAT_RGBX_8888, { 0xff, 0xff00, 0xff0000, 0x0 } },
 668       { HAL_PIXEL_FORMAT_RGB_888,   { 0xff, 0xff00, 0xff0000, 0x0 } },
 669       { HAL_PIXEL_FORMAT_RGB_565,   { 0xf800, 0x7e0, 0x1f, 0x0 } },
 670       { HAL_PIXEL_FORMAT_BGRA_8888, { 0xff0000, 0xff00, 0xff, 0xff000000 } },
 671       { 0, { 0, 0, 0, 0 } }
 672    };
 673    EGLint config_attrs[] = {
 674      EGL_NATIVE_VISUAL_ID,   0,
 675      EGL_NATIVE_VISUAL_TYPE, 0,
 676      EGL_FRAMEBUFFER_TARGET_ANDROID, EGL_TRUE,
 677      EGL_RECORDABLE_ANDROID, EGL_TRUE,
 678      EGL_NONE
 679    };
 680    int count, i, j;
 681
 682    count = 0;
 683    for (i = 0; visuals[i].format; i++) {
 684       int format_count = 0;
 685
 686       config_attrs[1] = visuals[i].format;
 687       config_attrs[3] = visuals[i].format;
 688
 689       for (j = 0; dri2_dpy->driver_configs[j]; j++) {
 690          const EGLint surface_type = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
 691          struct dri2_egl_config *dri2_conf;
 692          unsigned int double_buffered = 0;
 693
 694          dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[j],
 695             __DRI_ATTRIB_DOUBLE_BUFFER, &double_buffered);
 696
 697          /* support only double buffered configs */
 698          if (!double_buffered)
 699             continue;
 700
 701          dri2_conf = dri2_add_config(dpy, dri2_dpy->driver_configs[j],
 702                count + 1, surface_type, config_attrs, visuals[i].rgba_masks);
 703          if (dri2_conf) {
 704             count++;
 705             format_count++;
 706          }
 707       }
 708
 709       if (!format_count) {
 710          _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x",
 711                visuals[i].format);
 712       }
 713    }
 714
 715    /* post-process configs */
 716    for (i = 0; i < dpy->Configs->Size; i++) {
 717       struct dri2_egl_config *dri2_conf = dri2_egl_config(dpy->Configs->Elements[i]);
 718
 719       /* there is no front buffer so no OpenGL */
 720       dri2_conf->base.RenderableType &= ~EGL_OPENGL_BIT;
 721       dri2_conf->base.Conformant &= ~EGL_OPENGL_BIT;
 722    }
 723
 724    return (count != 0);
 725 }
 726
 727 static int
 728 droid_open_device(void)
 729 {
 730    const hw_module_t *mod;
 731    int fd = -1, err;
 732
 733    err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &mod);
 734    if (!err) {
 735       const gralloc_module_t *gr = (gralloc_module_t *) mod;
 736
 737       err = -EINVAL;
 738       if (gr->perform)
 739          err = gr->perform(gr, GRALLOC_MODULE_PERFORM_GET_DRM_FD, &fd);
 740    }
 741    if (err || fd < 0) {
 742       _eglLog(_EGL_WARNING, "fail to get drm fd");
 743       fd = -1;
 744    }
 745
 746    return (fd >= 0) ? dup(fd) : -1;
 747 }
 748
 749 /* support versions < JellyBean */
 750 #ifndef ALOGW
 751 #define ALOGW LOGW
 752 #endif
 753 #ifndef ALOGD
 754 #define ALOGD LOGD
 755 #endif
 756 #ifndef ALOGI
 757 #define ALOGI LOGI
 758 #endif
 759
 760 static void
 761 droid_log(EGLint level, const char *msg)
 762 {
 763    switch (level) {
 764    case _EGL_DEBUG:
 765       ALOGD("%s", msg);
 766       break;
 767    case _EGL_INFO:
 768       ALOGI("%s", msg);
 769       break;
 770    case _EGL_WARNING:
 771       ALOGW("%s", msg);
 772       break;
 773    case _EGL_FATAL:
 774       LOG_FATAL("%s", msg);
 775       break;
 776    default:
 777       break;
 778    }
 779 }
 780
 781 static struct dri2_egl_display_vtbl droid_display_vtbl = {
 782    .authenticate = NULL,
 783    .create_window_surface = droid_create_window_surface,
 784    .create_pixmap_surface = dri2_fallback_create_pixmap_surface,
 785    .create_pbuffer_surface = droid_create_pbuffer_surface,
 786    .destroy_surface = droid_destroy_surface,
 787    .create_image = droid_create_image_khr,
 788    .swap_interval = dri2_fallback_swap_interval,
 789    .swap_buffers = droid_swap_buffers,
 790    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
 791    .swap_buffers_region = dri2_fallback_swap_buffers_region,
 792    .post_sub_buffer = dri2_fallback_post_sub_buffer,
 793    .copy_buffers = dri2_fallback_copy_buffers,
 794    .query_buffer_age = dri2_fallback_query_buffer_age,
 795    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
 796    .get_sync_values = dri2_fallback_get_sync_values,
 797    .get_dri_drawable = dri2_surface_get_dri_drawable,
 798 };
 799
 800 static const __DRIimageLoaderExtension droid_image_loader_extension = {
 801    .base = { __DRI_IMAGE_LOADER, 1 },
 802
 803    .getBuffers          = droid_image_get_buffers,
 804    .flushFrontBuffer    = droid_flush_front_buffer,
 805 };
 806
 807 EGLBoolean
 808 dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *dpy)
 809 {
 810    struct dri2_egl_display *dri2_dpy;
 811    const char *err;
 812
 813    _eglSetLogProc(droid_log);
 814
 815    loader_set_logger(_eglLog);
 816
 817    dri2_dpy = calloc(1, sizeof(*dri2_dpy));
 818    if (!dri2_dpy)
 819       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 820
 821    dpy->DriverData = (void *) dri2_dpy;
 822
 823    dri2_dpy->fd = droid_open_device();
 824    if (dri2_dpy->fd < 0) {
 825       err = "DRI2: failed to open device";
 826       goto cleanup_display;
 827    }
 828
 829    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
 830    if (dri2_dpy->driver_name == NULL) {
 831       err = "DRI2: failed to get driver name";
 832       goto cleanup_device;
 833    }
 834
 835    if (!dri2_load_driver(dpy)) {
 836       err = "DRI2: failed to load driver";
 837       goto cleanup_driver_name;
 838    }
 839
 840    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
 841
 842    /* render nodes cannot use Gem names, and thus do not support
 843     * the __DRI_DRI2_LOADER extension */
 844    if (!dri2_dpy->is_render_node) {
 845       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 846       dri2_dpy->dri2_loader_extension.base.version = 3;
 847       dri2_dpy->dri2_loader_extension.getBuffers = NULL;
 848       dri2_dpy->dri2_loader_extension.flushFrontBuffer = droid_flush_front_buffer;
 849       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 850         droid_get_buffers_with_format;
 851       dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 852    } else {
 853       dri2_dpy->extensions[0] = &droid_image_loader_extension.base;
 854    }
 855    dri2_dpy->extensions[1] = &use_invalidate.base;
 856    dri2_dpy->extensions[2] = &image_lookup_extension.base;
 857    dri2_dpy->extensions[3] = NULL;
 858
 859
 860    if (!dri2_create_screen(dpy)) {
 861       err = "DRI2: failed to create screen";
 862       goto cleanup_driver;
 863    }
 864
 865    if (!droid_add_configs_for_visuals(drv, dpy)) {
 866       err = "DRI2: failed to add configs";
 867       goto cleanup_screen;
 868    }
 869
 870    dpy->Extensions.ANDROID_framebuffer_target = EGL_TRUE;
 871    dpy->Extensions.ANDROID_image_native_buffer = EGL_TRUE;
 872    dpy->Extensions.ANDROID_recordable = EGL_TRUE;
 873    dpy->Extensions.KHR_image_base = EGL_TRUE;
 874
 875    /* Fill vtbl last to prevent accidentally calling virtual function during
 876     * initialization.
 877     */
 878    dri2_dpy->vtbl = &droid_display_vtbl;
 879
 880    return EGL_TRUE;
 881
 882 cleanup_screen:
 883    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 884 cleanup_driver:
 885    dlclose(dri2_dpy->driver);
 886 cleanup_driver_name:
 887    free(dri2_dpy->driver_name);
 888 cleanup_device:
 889    close(dri2_dpy->fd);
 890 cleanup_display:
 891    free(dri2_dpy);
 892
 893    return _eglError(EGL_NOT_INITIALIZED, err);
 894 }