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
  33 #if ANDROID_VERSION >= 0x402
  34 #include <sync/sync.h>
  35 #endif
  36
  37 #include "loader.h"
  38 #include "egl_dri2.h"
  39 #include "egl_dri2_fallbacks.h"
  40 #include "gralloc_drm.h"
  41
  42 static int
  43 get_format_bpp(int native)
  44 {
  45    int bpp;
  46
  47    switch (native) {
  48    case HAL_PIXEL_FORMAT_RGBA_8888:
  49    case HAL_PIXEL_FORMAT_RGBX_8888:
  50    case HAL_PIXEL_FORMAT_BGRA_8888:
  51       bpp = 4;
  52       break;
  53    case HAL_PIXEL_FORMAT_RGB_888:
  54       bpp = 3;
  55       break;
  56    case HAL_PIXEL_FORMAT_RGB_565:
  57    case HAL_PIXEL_FORMAT_RGBA_5551:
  58    case HAL_PIXEL_FORMAT_RGBA_4444:
  59       bpp = 2;
  60       break;
  61    default:
  62       bpp = 0;
  63       break;
  64    }
  65
  66    return bpp;
  67 }
  68
  69 static int
  70 get_native_buffer_name(struct ANativeWindowBuffer *buf)
  71 {
  72    return gralloc_drm_get_gem_handle(buf->handle);
  73 }
  74
  75 static EGLBoolean
  76 droid_window_dequeue_buffer(struct dri2_egl_surface *dri2_surf)
  77 {
  78 #if ANDROID_VERSION >= 0x0402
  79    int fence_fd;
  80
  81    if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer,
  82                                         &fence_fd))
  83       return EGL_FALSE;
  84
  85    /* If access to the buffer is controlled by a sync fence, then block on the
  86     * fence.
  87     *
  88     * It may be more performant to postpone blocking until there is an
  89     * immediate need to write to the buffer. But doing so would require adding
  90     * hooks to the DRI2 loader.
  91     *
  92     * From the ANativeWindow::dequeueBuffer documentation:
  93     *
  94     *    The libsync fence file descriptor returned in the int pointed to by
  95     *    the fenceFd argument will refer to the fence that must signal
  96     *    before the dequeued buffer may be written to.  A value of -1
  97     *    indicates that the caller may access the buffer immediately without
  98     *    waiting on a fence.  If a valid file descriptor is returned (i.e.
  99     *    any value except -1) then the caller is responsible for closing the
 100     *    file descriptor.
 101     */
 102     if (fence_fd >= 0) {
 103        /* From the SYNC_IOC_WAIT documentation in <linux/sync.h>:
 104         *
 105         *    Waits indefinitely if timeout < 0.
 106         */
 107         int timeout = -1;
 108         sync_wait(fence_fd, timeout);
 109         close(fence_fd);
 110    }
 111
 112    dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);
 113 #else
 114    if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer))
 115       return EGL_FALSE;
 116
 117    dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);
 118    dri2_surf->window->lockBuffer(dri2_surf->window, dri2_surf->buffer);
 119 #endif
 120
 121    return EGL_TRUE;
 122 }
 123
 124 static EGLBoolean
 125 droid_window_enqueue_buffer(struct dri2_egl_surface *dri2_surf)
 126 {
 127 #if ANDROID_VERSION >= 0x0402
 128    /* Queue the buffer without a sync fence. This informs the ANativeWindow
 129     * that it may access the buffer immediately.
 130     *
 131     * From ANativeWindow::dequeueBuffer:
 132     *
 133     *    The fenceFd argument specifies a libsync fence file descriptor for
 134     *    a fence that must signal before the buffer can be accessed.  If
 135     *    the buffer can be accessed immediately then a value of -1 should
 136     *    be used.  The caller must not use the file descriptor after it
 137     *    is passed to queueBuffer, and the ANativeWindow implementation
 138     *    is responsible for closing it.
 139     */
 140    int fence_fd = -1;
 141    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer,
 142                                   fence_fd);
 143 #else
 144    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer);
 145 #endif
 146
 147    dri2_surf->buffer->common.decRef(&dri2_surf->buffer->common);
 148    dri2_surf->buffer = NULL;
 149
 150    return EGL_TRUE;
 151 }
 152
 153 static void
 154 droid_window_cancel_buffer(struct dri2_egl_surface *dri2_surf)
 155 {
 156    /* no cancel buffer? */
 157    droid_window_enqueue_buffer(dri2_surf);
 158 }
 159
 160 static __DRIbuffer *
 161 droid_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
 162                          unsigned int att, unsigned int format)
 163 {
 164    struct dri2_egl_display *dri2_dpy =
 165       dri2_egl_display(dri2_surf->base.Resource.Display);
 166
 167    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
 168       return NULL;
 169
 170    if (!dri2_surf->local_buffers[att]) {
 171       dri2_surf->local_buffers[att] =
 172          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
 173                dri2_surf->base.Width, dri2_surf->base.Height);
 174    }
 175
 176    return dri2_surf->local_buffers[att];
 177 }
 178
 179 static void
 180 droid_free_local_buffers(struct dri2_egl_surface *dri2_surf)
 181 {
 182    struct dri2_egl_display *dri2_dpy =
 183       dri2_egl_display(dri2_surf->base.Resource.Display);
 184    int i;
 185
 186    for (i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
 187       if (dri2_surf->local_buffers[i]) {
 188          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 189                dri2_surf->local_buffers[i]);
 190          dri2_surf->local_buffers[i] = NULL;
 191       }
 192    }
 193 }
 194
 195 static _EGLSurface *
 196 droid_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 197                     _EGLConfig *conf, EGLNativeWindowType window,
 198                     const EGLint *attrib_list)
 199 {
 200    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 201    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 202    struct dri2_egl_surface *dri2_surf;
 203    dri2_surf = calloc(1, sizeof *dri2_surf);
 204    if (!dri2_surf) {
 205       _eglError(EGL_BAD_ALLOC, "droid_create_surface");
 206       return NULL;
 207    }
 208
 209    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 210       goto cleanup_surface;
 211
 212    if (type == EGL_WINDOW_BIT) {
 213       int format;
 214
 215       if (!window || window->common.magic != ANDROID_NATIVE_WINDOW_MAGIC) {
 216          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 217          goto cleanup_surface;
 218       }
 219       if (window->query(window, NATIVE_WINDOW_FORMAT, &format)) {
 220          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 221          goto cleanup_surface;
 222       }
 223
 224       if (format != dri2_conf->base.NativeVisualID) {
 225          _eglLog(_EGL_WARNING, "Native format mismatch: 0x%x != 0x%x",
 226                format, dri2_conf->base.NativeVisualID);
 227       }
 228
 229       window->query(window, NATIVE_WINDOW_WIDTH, &dri2_surf->base.Width);
 230       window->query(window, NATIVE_WINDOW_HEIGHT, &dri2_surf->base.Height);
 231    }
 232
 233    dri2_surf->dri_drawable =
 234       (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen,
 235                                            dri2_conf->dri_double_config,
 236                                            dri2_surf);
 237    if (dri2_surf->dri_drawable == NULL) {
 238       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 239       goto cleanup_surface;
 240    }
 241
 242    if (window) {
 243       window->common.incRef(&window->common);
 244       dri2_surf->window = window;
 245    }
 246
 247    return &dri2_surf->base;
 248
 249 cleanup_surface:
 250    free(dri2_surf);
 251
 252    return NULL;
 253 }
 254
 255 static _EGLSurface *
 256 droid_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 257                            _EGLConfig *conf, EGLNativeWindowType window,
 258                            const EGLint *attrib_list)
 259 {
 260    return droid_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 261                               window, attrib_list);
 262 }
 263
 264 static _EGLSurface *
 265 droid_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 266                            _EGLConfig *conf, EGLNativePixmapType pixmap,
 267                            const EGLint *attrib_list)
 268 {
 269    return NULL;
 270 }
 271
 272 static _EGLSurface *
 273 droid_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 274                             _EGLConfig *conf, const EGLint *attrib_list)
 275 {
 276    return droid_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 277                               NULL, attrib_list);
 278 }
 279
 280 static EGLBoolean
 281 droid_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 282 {
 283    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 284    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 285
 286    if (!_eglPutSurface(surf))
 287       return EGL_TRUE;
 288
 289    droid_free_local_buffers(dri2_surf);
 290
 291    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 292       if (dri2_surf->buffer)
 293          droid_window_cancel_buffer(dri2_surf);
 294
 295       dri2_surf->window->common.decRef(&dri2_surf->window->common);
 296    }
 297
 298    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 299
 300    free(dri2_surf);
 301
 302    return EGL_TRUE;
 303 }
 304
 305 static EGLBoolean
 306 droid_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 307 {
 308    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 309    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 310    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 311    _EGLContext *ctx;
 312
 313    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 314       return EGL_TRUE;
 315
 316    if (dri2_drv->glFlush) {
 317       ctx = _eglGetCurrentContext();
 318       if (ctx && ctx->DrawSurface == &dri2_surf->base)
 319          dri2_drv->glFlush();
 320    }
 321
 322    (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
 323
 324    if (dri2_surf->buffer)
 325       droid_window_enqueue_buffer(dri2_surf);
 326
 327    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 328
 329    return EGL_TRUE;
 330 }
 331
 332 static _EGLImage *
 333 dri2_create_image_android_native_buffer(_EGLDisplay *disp, _EGLContext *ctx,
 334                                         struct ANativeWindowBuffer *buf)
 335 {
 336    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 337    struct dri2_egl_image *dri2_img;
 338    int name;
 339    EGLint format;
 340
 341    if (ctx != NULL) {
 342       /* From the EGL_ANDROID_image_native_buffer spec:
 343        *
 344        *     * If <target> is EGL_NATIVE_BUFFER_ANDROID and <ctx> is not
 345        *       EGL_NO_CONTEXT, the error EGL_BAD_CONTEXT is generated.
 346        */
 347       _eglError(EGL_BAD_CONTEXT, "eglCreateEGLImageKHR: for "
 348                 "EGL_NATIVE_BUFFER_ANDROID, the context must be "
 349                 "EGL_NO_CONTEXT");
 350       return NULL;
 351    }
 352
 353    if (!buf || buf->common.magic != ANDROID_NATIVE_BUFFER_MAGIC ||
 354        buf->common.version != sizeof(*buf)) {
 355       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 356       return NULL;
 357    }
 358
 359    name = get_native_buffer_name(buf);
 360    if (!name) {
 361       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 362       return NULL;
 363    }
 364
 365    /* see the table in droid_add_configs_for_visuals */
 366    switch (buf->format) {
 367    case HAL_PIXEL_FORMAT_BGRA_8888:
 368       format = __DRI_IMAGE_FORMAT_ARGB8888;
 369       break;
 370    case HAL_PIXEL_FORMAT_RGB_565:
 371       format = __DRI_IMAGE_FORMAT_RGB565;
 372       break;
 373    case HAL_PIXEL_FORMAT_RGBA_8888:
 374       format = __DRI_IMAGE_FORMAT_ABGR8888;
 375       break;
 376    case HAL_PIXEL_FORMAT_RGBX_8888:
 377       format = __DRI_IMAGE_FORMAT_XBGR8888;
 378       break;
 379    case HAL_PIXEL_FORMAT_RGB_888:
 380    case HAL_PIXEL_FORMAT_RGBA_5551:
 381    case HAL_PIXEL_FORMAT_RGBA_4444:
 382       /* unsupported */
 383    default:
 384       _eglLog(_EGL_WARNING, "unsupported native buffer format 0x%x", buf->format);
 385       return NULL;
 386       break;
 387    }
 388
 389    dri2_img = calloc(1, sizeof(*dri2_img));
 390    if (!dri2_img) {
 391       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 392       return NULL;
 393    }
 394
 395    if (!_eglInitImage(&dri2_img->base, disp)) {
 396       free(dri2_img);
 397       return NULL;
 398    }
 399
 400    dri2_img->dri_image =
 401       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
 402                                            buf->width,
 403                                            buf->height,
 404                                            format,
 405                                            name,
 406                                            buf->stride,
 407                                            dri2_img);
 408    if (!dri2_img->dri_image) {
 409       free(dri2_img);
 410       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 411       return NULL;
 412    }
 413
 414    return &dri2_img->base;
 415 }
 416
 417 static _EGLImage *
 418 droid_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 419                        _EGLContext *ctx, EGLenum target,
 420                        EGLClientBuffer buffer, const EGLint *attr_list)
 421 {
 422    switch (target) {
 423    case EGL_NATIVE_BUFFER_ANDROID:
 424       return dri2_create_image_android_native_buffer(disp, ctx,
 425             (struct ANativeWindowBuffer *) buffer);
 426    default:
 427       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 428    }
 429 }
 430
 431 static void
 432 droid_init_driver_functions(_EGLDriver *drv)
 433 {
 434    drv->API.CreateWindowSurface = droid_create_window_surface;
 435    drv->API.CreatePixmapSurface = droid_create_pixmap_surface;
 436    drv->API.CreatePbufferSurface = droid_create_pbuffer_surface;
 437    drv->API.DestroySurface = droid_destroy_surface;
 438    drv->API.SwapBuffers = droid_swap_buffers;
 439
 440    drv->API.CreateImageKHR = droid_create_image_khr;
 441 }
 442
 443 static void
 444 droid_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 445 {
 446 }
 447
 448 static int
 449 droid_get_buffers_parse_attachments(struct dri2_egl_surface *dri2_surf,
 450                                     unsigned int *attachments, int count)
 451 {
 452    int num_buffers = 0, i;
 453
 454    /* fill dri2_surf->buffers */
 455    for (i = 0; i < count * 2; i += 2) {
 456       __DRIbuffer *buf, *local;
 457
 458       assert(num_buffers < ARRAY_SIZE(dri2_surf->buffers));
 459       buf = &dri2_surf->buffers[num_buffers];
 460
 461       switch (attachments[i]) {
 462       case __DRI_BUFFER_BACK_LEFT:
 463          if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 464             buf->attachment = attachments[i];
 465             buf->name = get_native_buffer_name(dri2_surf->buffer);
 466             buf->cpp = get_format_bpp(dri2_surf->buffer->format);
 467             buf->pitch = dri2_surf->buffer->stride * buf->cpp;
 468             buf->flags = 0;
 469
 470             if (buf->name)
 471                num_buffers++;
 472
 473             break;
 474          }
 475          /* fall through for pbuffers */
 476       case __DRI_BUFFER_DEPTH:
 477       case __DRI_BUFFER_STENCIL:
 478       case __DRI_BUFFER_ACCUM:
 479       case __DRI_BUFFER_DEPTH_STENCIL:
 480       case __DRI_BUFFER_HIZ:
 481          local = droid_alloc_local_buffer(dri2_surf,
 482                attachments[i], attachments[i + 1]);
 483
 484          if (local) {
 485             *buf = *local;
 486             num_buffers++;
 487          }
 488          break;
 489       case __DRI_BUFFER_FRONT_LEFT:
 490       case __DRI_BUFFER_FRONT_RIGHT:
 491       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 492       case __DRI_BUFFER_FAKE_FRONT_RIGHT:
 493       case __DRI_BUFFER_BACK_RIGHT:
 494       default:
 495          /* no front or right buffers */
 496          break;
 497       }
 498    }
 499
 500    return num_buffers;
 501 }
 502
 503 static __DRIbuffer *
 504 droid_get_buffers_with_format(__DRIdrawable * driDrawable,
 505                              int *width, int *height,
 506                              unsigned int *attachments, int count,
 507                              int *out_count, void *loaderPrivate)
 508 {
 509    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 510    struct dri2_egl_display *dri2_dpy =
 511       dri2_egl_display(dri2_surf->base.Resource.Display);
 512    int i;
 513
 514    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 515       /* try to dequeue the next back buffer */
 516       if (!dri2_surf->buffer && !droid_window_dequeue_buffer(dri2_surf))
 517          return NULL;
 518
 519       /* free outdated buffers and update the surface size */
 520       if (dri2_surf->base.Width != dri2_surf->buffer->width ||
 521           dri2_surf->base.Height != dri2_surf->buffer->height) {
 522          droid_free_local_buffers(dri2_surf);
 523          dri2_surf->base.Width = dri2_surf->buffer->width;
 524          dri2_surf->base.Height = dri2_surf->buffer->height;
 525       }
 526    }
 527
 528    dri2_surf->buffer_count =
 529       droid_get_buffers_parse_attachments(dri2_surf, attachments, count);
 530
 531    if (width)
 532       *width = dri2_surf->base.Width;
 533    if (height)
 534       *height = dri2_surf->base.Height;
 535
 536    *out_count = dri2_surf->buffer_count;;
 537
 538    return dri2_surf->buffers;
 539 }
 540
 541 static EGLBoolean
 542 droid_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *dpy)
 543 {
 544    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
 545    const struct {
 546       int format;
 547       unsigned int rgba_masks[4];
 548    } visuals[] = {
 549       { HAL_PIXEL_FORMAT_RGBA_8888, { 0xff, 0xff00, 0xff0000, 0xff000000 } },
 550       { HAL_PIXEL_FORMAT_RGBX_8888, { 0xff, 0xff00, 0xff0000, 0x0 } },
 551       { HAL_PIXEL_FORMAT_RGB_888,   { 0xff, 0xff00, 0xff0000, 0x0 } },
 552       { HAL_PIXEL_FORMAT_RGB_565,   { 0xf800, 0x7e0, 0x1f, 0x0 } },
 553       { HAL_PIXEL_FORMAT_BGRA_8888, { 0xff0000, 0xff00, 0xff, 0xff000000 } },
 554       { 0, 0, { 0, 0, 0, 0 } }
 555    };
 556    int count, i, j;
 557
 558    count = 0;
 559    for (i = 0; visuals[i].format; i++) {
 560       int format_count = 0;
 561
 562       for (j = 0; dri2_dpy->driver_configs[j]; j++) {
 563          const EGLint surface_type = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
 564          struct dri2_egl_config *dri2_conf;
 565          unsigned int double_buffered = 0;
 566
 567          dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[j],
 568             __DRI_ATTRIB_DOUBLE_BUFFER, &double_buffered);
 569
 570          /* support only double buffered configs */
 571          if (!double_buffered)
 572             continue;
 573
 574          dri2_conf = dri2_add_config(dpy, dri2_dpy->driver_configs[j],
 575                count + 1, surface_type, NULL, visuals[i].rgba_masks);
 576          if (dri2_conf) {
 577             dri2_conf->base.NativeVisualID = visuals[i].format;
 578             dri2_conf->base.NativeVisualType = visuals[i].format;
 579             count++;
 580             format_count++;
 581          }
 582       }
 583
 584       if (!format_count) {
 585          _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x",
 586                visuals[i].format);
 587       }
 588    }
 589
 590    /* post-process configs */
 591    for (i = 0; i < dpy->Configs->Size; i++) {
 592       struct dri2_egl_config *dri2_conf = dri2_egl_config(dpy->Configs->Elements[i]);
 593
 594       /* there is no front buffer so no OpenGL */
 595       dri2_conf->base.RenderableType &= ~EGL_OPENGL_BIT;
 596       dri2_conf->base.Conformant &= ~EGL_OPENGL_BIT;
 597    }
 598
 599    return (count != 0);
 600 }
 601
 602 static int
 603 droid_open_device(void)
 604 {
 605    const hw_module_t *mod;
 606    int fd = -1, err;
 607
 608    err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &mod);
 609    if (!err) {
 610       const gralloc_module_t *gr = (gralloc_module_t *) mod;
 611
 612       err = -EINVAL;
 613       if (gr->perform)
 614          err = gr->perform(gr, GRALLOC_MODULE_PERFORM_GET_DRM_FD, &fd);
 615    }
 616    if (err || fd < 0) {
 617       _eglLog(_EGL_WARNING, "fail to get drm fd");
 618       fd = -1;
 619    }
 620
 621    return (fd >= 0) ? dup(fd) : -1;
 622 }
 623
 624 /* support versions < JellyBean */
 625 #ifndef ALOGW
 626 #define ALOGW LOGW
 627 #endif
 628 #ifndef ALOGD
 629 #define ALOGD LOGD
 630 #endif
 631 #ifndef ALOGI
 632 #define ALOGI LOGI
 633 #endif
 634
 635 static void
 636 droid_log(EGLint level, const char *msg)
 637 {
 638    switch (level) {
 639    case _EGL_DEBUG:
 640       ALOGD("%s", msg);
 641       break;
 642    case _EGL_INFO:
 643       ALOGI("%s", msg);
 644       break;
 645    case _EGL_WARNING:
 646       ALOGW("%s", msg);
 647       break;
 648    case _EGL_FATAL:
 649       LOG_FATAL("%s", msg);
 650       break;
 651    default:
 652       break;
 653    }
 654 }
 655
 656 static struct dri2_egl_display_vtbl droid_display_vtbl = {
 657    .authenticate = NULL,
 658    .swap_interval = dri2_fallback_swap_interval,
 659 };
 660
 661 EGLBoolean
 662 dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *dpy)
 663 {
 664    struct dri2_egl_display *dri2_dpy;
 665    const char *err;
 666
 667    _eglSetLogProc(droid_log);
 668
 669    loader_set_logger(_eglLog);
 670
 671    dri2_dpy = calloc(1, sizeof(*dri2_dpy));
 672    if (!dri2_dpy)
 673       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 674
 675    dpy->DriverData = (void *) dri2_dpy;
 676
 677    dri2_dpy->fd = droid_open_device();
 678    if (dri2_dpy->fd < 0) {
 679       err = "DRI2: failed to open device";
 680       goto cleanup_display;
 681    }
 682
 683    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
 684    if (dri2_dpy->driver_name == NULL) {
 685       err = "DRI2: failed to get driver name";
 686       goto cleanup_device;
 687    }
 688
 689    if (!dri2_load_driver(dpy)) {
 690       err = "DRI2: failed to load driver";
 691       goto cleanup_driver_name;
 692    }
 693
 694    dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 695    dri2_dpy->dri2_loader_extension.base.version = 3;
 696    dri2_dpy->dri2_loader_extension.getBuffers = NULL;
 697    dri2_dpy->dri2_loader_extension.flushFrontBuffer = droid_flush_front_buffer;
 698    dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 699       droid_get_buffers_with_format;
 700
 701    dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 702    dri2_dpy->extensions[1] = &image_lookup_extension.base;
 703    dri2_dpy->extensions[2] = &use_invalidate.base;
 704    dri2_dpy->extensions[3] = NULL;
 705
 706    if (!dri2_create_screen(dpy)) {
 707       err = "DRI2: failed to create screen";
 708       goto cleanup_driver;
 709    }
 710
 711    if (!droid_add_configs_for_visuals(drv, dpy)) {
 712       err = "DRI2: failed to add configs";
 713       goto cleanup_screen;
 714    }
 715
 716    dpy->Extensions.ANDROID_image_native_buffer = EGL_TRUE;
 717    dpy->Extensions.KHR_image_base = EGL_TRUE;
 718
 719    /* we're supporting EGL 1.4 */
 720    dpy->VersionMajor = 1;
 721    dpy->VersionMinor = 4;
 722
 723    droid_init_driver_functions(drv);
 724
 725    /* Fill vtbl last to prevent accidentally calling virtual function during
 726     * initialization.
 727     */
 728    dri2_dpy->vtbl = &droid_display_vtbl;
 729
 730    return EGL_TRUE;
 731
 732 cleanup_screen:
 733    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 734 cleanup_driver:
 735    dlclose(dri2_dpy->driver);
 736 cleanup_driver_name:
 737    free(dri2_dpy->driver_name);
 738 cleanup_device:
 739    close(dri2_dpy->fd);
 740 cleanup_display:
 741    free(dri2_dpy);
 742
 743    return _eglError(EGL_NOT_INITIALIZED, err);
 744 }