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 #define ALIGN(val, align)       (((val) + (align) - 1) & ~((align) - 1))
  44
  45 static int
  46 get_format_bpp(int native)
  47 {
  48    int bpp;
  49
  50    switch (native) {
  51    case HAL_PIXEL_FORMAT_RGBA_8888:
  52    case HAL_PIXEL_FORMAT_RGBX_8888:
  53    case HAL_PIXEL_FORMAT_BGRA_8888:
  54       bpp = 4;
  55       break;
  56    case HAL_PIXEL_FORMAT_RGB_888:
  57       bpp = 3;
  58       break;
  59    case HAL_PIXEL_FORMAT_RGB_565:
  60       bpp = 2;
  61       break;
  62    case HAL_PIXEL_FORMAT_YV12:
  63       bpp = 1;
  64       break;
  65    default:
  66       bpp = 0;
  67       break;
  68    }
  69
  70    return bpp;
  71 }
  72
  73 /* createImageFromFds requires fourcc format */
  74 static int get_fourcc(int native)
  75 {
  76    switch (native) {
  77    case HAL_PIXEL_FORMAT_RGB_565:   return __DRI_IMAGE_FOURCC_RGB565;
  78    case HAL_PIXEL_FORMAT_BGRA_8888: return __DRI_IMAGE_FOURCC_ARGB8888;
  79    case HAL_PIXEL_FORMAT_RGBA_8888: return __DRI_IMAGE_FOURCC_ABGR8888;
  80    case HAL_PIXEL_FORMAT_RGBX_8888: return __DRI_IMAGE_FOURCC_XBGR8888;
  81    case HAL_PIXEL_FORMAT_YV12:      return __DRI_IMAGE_FOURCC_YVU420;
  82    default:
  83       _eglLog(_EGL_WARNING, "unsupported native buffer format 0x%x", native);
  84    }
  85    return -1;
  86 }
  87
  88 static int get_format(int format)
  89 {
  90    switch (format) {
  91    case HAL_PIXEL_FORMAT_BGRA_8888: return __DRI_IMAGE_FORMAT_ARGB8888;
  92    case HAL_PIXEL_FORMAT_RGB_565:   return __DRI_IMAGE_FORMAT_RGB565;
  93    case HAL_PIXEL_FORMAT_RGBA_8888: return __DRI_IMAGE_FORMAT_ABGR8888;
  94    case HAL_PIXEL_FORMAT_RGBX_8888: return __DRI_IMAGE_FORMAT_XBGR8888;
  95    case HAL_PIXEL_FORMAT_RGB_888:
  96       /* unsupported */
  97    default:
  98       _eglLog(_EGL_WARNING, "unsupported native buffer format 0x%x", format);
  99    }
 100    return -1;
 101 }
 102
 103 static int
 104 get_native_buffer_fd(struct ANativeWindowBuffer *buf)
 105 {
 106    native_handle_t *handle = (native_handle_t *)buf->handle;
 107    /*
 108     * Various gralloc implementations exist, but the dma-buf fd tends
 109     * to be first. Access it directly to avoid a dependency on specific
 110     * gralloc versions.
 111     */
 112    return (handle && handle->numFds) ? handle->data[0] : -1;
 113 }
 114
 115 static int
 116 get_native_buffer_name(struct ANativeWindowBuffer *buf)
 117 {
 118    return gralloc_drm_get_gem_handle(buf->handle);
 119 }
 120
 121 static EGLBoolean
 122 droid_window_dequeue_buffer(struct dri2_egl_surface *dri2_surf)
 123 {
 124 #if ANDROID_VERSION >= 0x0402
 125    int fence_fd;
 126
 127    if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer,
 128                                         &fence_fd))
 129       return EGL_FALSE;
 130
 131    /* If access to the buffer is controlled by a sync fence, then block on the
 132     * fence.
 133     *
 134     * It may be more performant to postpone blocking until there is an
 135     * immediate need to write to the buffer. But doing so would require adding
 136     * hooks to the DRI2 loader.
 137     *
 138     * From the ANativeWindow::dequeueBuffer documentation:
 139     *
 140     *    The libsync fence file descriptor returned in the int pointed to by
 141     *    the fenceFd argument will refer to the fence that must signal
 142     *    before the dequeued buffer may be written to.  A value of -1
 143     *    indicates that the caller may access the buffer immediately without
 144     *    waiting on a fence.  If a valid file descriptor is returned (i.e.
 145     *    any value except -1) then the caller is responsible for closing the
 146     *    file descriptor.
 147     */
 148     if (fence_fd >= 0) {
 149        /* From the SYNC_IOC_WAIT documentation in <linux/sync.h>:
 150         *
 151         *    Waits indefinitely if timeout < 0.
 152         */
 153         int timeout = -1;
 154         sync_wait(fence_fd, timeout);
 155         close(fence_fd);
 156    }
 157
 158    dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);
 159 #else
 160    if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer))
 161       return EGL_FALSE;
 162
 163    dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);
 164    dri2_surf->window->lockBuffer(dri2_surf->window, dri2_surf->buffer);
 165 #endif
 166
 167    return EGL_TRUE;
 168 }
 169
 170 static EGLBoolean
 171 droid_window_enqueue_buffer(_EGLDisplay *disp, struct dri2_egl_surface *dri2_surf)
 172 {
 173    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 174
 175    /* To avoid blocking other EGL calls, release the display mutex before
 176     * we enter droid_window_enqueue_buffer() and re-acquire the mutex upon
 177     * return.
 178     */
 179    mtx_unlock(&disp->Mutex);
 180
 181 #if ANDROID_VERSION >= 0x0402
 182    /* Queue the buffer without a sync fence. This informs the ANativeWindow
 183     * that it may access the buffer immediately.
 184     *
 185     * From ANativeWindow::dequeueBuffer:
 186     *
 187     *    The fenceFd argument specifies a libsync fence file descriptor for
 188     *    a fence that must signal before the buffer can be accessed.  If
 189     *    the buffer can be accessed immediately then a value of -1 should
 190     *    be used.  The caller must not use the file descriptor after it
 191     *    is passed to queueBuffer, and the ANativeWindow implementation
 192     *    is responsible for closing it.
 193     */
 194    int fence_fd = -1;
 195    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer,
 196                                   fence_fd);
 197 #else
 198    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer);
 199 #endif
 200
 201    dri2_surf->buffer->common.decRef(&dri2_surf->buffer->common);
 202    dri2_surf->buffer = NULL;
 203
 204    mtx_lock(&disp->Mutex);
 205
 206    if (dri2_surf->dri_image) {
 207       dri2_dpy->image->destroyImage(dri2_surf->dri_image);
 208       dri2_surf->dri_image = NULL;
 209    }
 210
 211    return EGL_TRUE;
 212 }
 213
 214 static void
 215 droid_window_cancel_buffer(_EGLDisplay *disp, struct dri2_egl_surface *dri2_surf)
 216 {
 217    /* no cancel buffer? */
 218    droid_window_enqueue_buffer(disp, dri2_surf);
 219 }
 220
 221 static __DRIbuffer *
 222 droid_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
 223                          unsigned int att, unsigned int format)
 224 {
 225    struct dri2_egl_display *dri2_dpy =
 226       dri2_egl_display(dri2_surf->base.Resource.Display);
 227
 228    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
 229       return NULL;
 230
 231    if (!dri2_surf->local_buffers[att]) {
 232       dri2_surf->local_buffers[att] =
 233          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
 234                dri2_surf->base.Width, dri2_surf->base.Height);
 235    }
 236
 237    return dri2_surf->local_buffers[att];
 238 }
 239
 240 static void
 241 droid_free_local_buffers(struct dri2_egl_surface *dri2_surf)
 242 {
 243    struct dri2_egl_display *dri2_dpy =
 244       dri2_egl_display(dri2_surf->base.Resource.Display);
 245    int i;
 246
 247    for (i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
 248       if (dri2_surf->local_buffers[i]) {
 249          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 250                dri2_surf->local_buffers[i]);
 251          dri2_surf->local_buffers[i] = NULL;
 252       }
 253    }
 254 }
 255
 256 static _EGLSurface *
 257 droid_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 258                     _EGLConfig *conf, void *native_window,
 259                     const EGLint *attrib_list)
 260 {
 261    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 262    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 263    struct dri2_egl_surface *dri2_surf;
 264    struct ANativeWindow *window = native_window;
 265    const __DRIconfig *config;
 266
 267    dri2_surf = calloc(1, sizeof *dri2_surf);
 268    if (!dri2_surf) {
 269       _eglError(EGL_BAD_ALLOC, "droid_create_surface");
 270       return NULL;
 271    }
 272
 273    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 274       goto cleanup_surface;
 275
 276    if (type == EGL_WINDOW_BIT) {
 277       int format;
 278
 279       if (!window || window->common.magic != ANDROID_NATIVE_WINDOW_MAGIC) {
 280          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 281          goto cleanup_surface;
 282       }
 283       if (window->query(window, NATIVE_WINDOW_FORMAT, &format)) {
 284          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 285          goto cleanup_surface;
 286       }
 287
 288       if (format != dri2_conf->base.NativeVisualID) {
 289          _eglLog(_EGL_WARNING, "Native format mismatch: 0x%x != 0x%x",
 290                format, dri2_conf->base.NativeVisualID);
 291       }
 292
 293       window->query(window, NATIVE_WINDOW_WIDTH, &dri2_surf->base.Width);
 294       window->query(window, NATIVE_WINDOW_HEIGHT, &dri2_surf->base.Height);
 295    }
 296
 297    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 298                                 dri2_surf->base.GLColorspace);
 299    if (!config)
 300       goto cleanup_surface;
 301
 302    dri2_surf->dri_drawable =
 303       (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen, config,
 304                                            dri2_surf);
 305    if (dri2_surf->dri_drawable == NULL) {
 306       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 307       goto cleanup_surface;
 308    }
 309
 310    if (window) {
 311       window->common.incRef(&window->common);
 312       dri2_surf->window = window;
 313    }
 314
 315    return &dri2_surf->base;
 316
 317 cleanup_surface:
 318    free(dri2_surf);
 319
 320    return NULL;
 321 }
 322
 323 static _EGLSurface *
 324 droid_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 325                             _EGLConfig *conf, void *native_window,
 326                             const EGLint *attrib_list)
 327 {
 328    return droid_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 329                                native_window, attrib_list);
 330 }
 331
 332 static _EGLSurface *
 333 droid_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 334                             _EGLConfig *conf, const EGLint *attrib_list)
 335 {
 336    return droid_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 337                               NULL, attrib_list);
 338 }
 339
 340 static EGLBoolean
 341 droid_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 342 {
 343    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 344    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 345
 346    if (!_eglPutSurface(surf))
 347       return EGL_TRUE;
 348
 349    droid_free_local_buffers(dri2_surf);
 350
 351    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 352       if (dri2_surf->buffer)
 353          droid_window_cancel_buffer(disp, dri2_surf);
 354
 355       dri2_surf->window->common.decRef(&dri2_surf->window->common);
 356    }
 357
 358    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 359
 360    free(dri2_surf);
 361
 362    return EGL_TRUE;
 363 }
 364
 365 static int
 366 update_buffers(struct dri2_egl_surface *dri2_surf)
 367 {
 368    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 369       return 0;
 370
 371    /* try to dequeue the next back buffer */
 372    if (!dri2_surf->buffer && !droid_window_dequeue_buffer(dri2_surf)) {
 373       _eglLog(_EGL_WARNING, "Could not dequeue buffer from native window");
 374       return -1;
 375    }
 376
 377    /* free outdated buffers and update the surface size */
 378    if (dri2_surf->base.Width != dri2_surf->buffer->width ||
 379        dri2_surf->base.Height != dri2_surf->buffer->height) {
 380       droid_free_local_buffers(dri2_surf);
 381       dri2_surf->base.Width = dri2_surf->buffer->width;
 382       dri2_surf->base.Height = dri2_surf->buffer->height;
 383    }
 384
 385    return 0;
 386 }
 387
 388 static int
 389 get_back_bo(struct dri2_egl_surface *dri2_surf)
 390 {
 391    struct dri2_egl_display *dri2_dpy =
 392       dri2_egl_display(dri2_surf->base.Resource.Display);
 393    int fourcc, pitch;
 394    int offset = 0, fd;
 395
 396    if (dri2_surf->dri_image)
 397            return 0;
 398
 399    if (!dri2_surf->buffer)
 400       return -1;
 401
 402    fd = get_native_buffer_fd(dri2_surf->buffer);
 403    if (fd < 0) {
 404       _eglLog(_EGL_WARNING, "Could not get native buffer FD");
 405       return -1;
 406    }
 407
 408    fourcc = get_fourcc(dri2_surf->buffer->format);
 409
 410    pitch = dri2_surf->buffer->stride *
 411       get_format_bpp(dri2_surf->buffer->format);
 412
 413    if (fourcc == -1 || pitch == 0) {
 414       _eglLog(_EGL_WARNING, "Invalid buffer fourcc(%x) or pitch(%d)",
 415               fourcc, pitch);
 416       return -1;
 417    }
 418
 419    dri2_surf->dri_image =
 420       dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
 421                                           dri2_surf->base.Width,
 422                                           dri2_surf->base.Height,
 423                                           fourcc,
 424                                           &fd,
 425                                           1,
 426                                           &pitch,
 427                                           &offset,
 428                                           dri2_surf);
 429    if (!dri2_surf->dri_image)
 430       return -1;
 431
 432    return 0;
 433 }
 434
 435 static int
 436 droid_image_get_buffers(__DRIdrawable *driDrawable,
 437                   unsigned int format,
 438                   uint32_t *stamp,
 439                   void *loaderPrivate,
 440                   uint32_t buffer_mask,
 441                   struct __DRIimageList *images)
 442 {
 443    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 444
 445    images->image_mask = 0;
 446
 447    if (update_buffers(dri2_surf) < 0)
 448       return 0;
 449
 450    if (buffer_mask & __DRI_IMAGE_BUFFER_FRONT) {
 451       /*
 452        * We don't support front buffers and GLES doesn't require them for
 453        * window surfaces, but some DRI drivers will request them anyway.
 454        * We just ignore such request as other platforms backends do.
 455        */
 456    }
 457
 458    if (buffer_mask & __DRI_IMAGE_BUFFER_BACK) {
 459       if (get_back_bo(dri2_surf) < 0)
 460          return 0;
 461
 462       images->back = dri2_surf->dri_image;
 463       images->image_mask |= __DRI_IMAGE_BUFFER_BACK;
 464    }
 465
 466    return 1;
 467 }
 468
 469 static EGLBoolean
 470 droid_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 471 {
 472    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 473    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 474
 475    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 476       return EGL_TRUE;
 477
 478    dri2_flush_drawable_for_swapbuffers(disp, draw);
 479
 480    if (dri2_surf->buffer)
 481       droid_window_enqueue_buffer(disp, dri2_surf);
 482
 483    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 484
 485    return EGL_TRUE;
 486 }
 487
 488 static _EGLImage *
 489 droid_create_image_from_prime_fd(_EGLDisplay *disp, _EGLContext *ctx,
 490                                  struct ANativeWindowBuffer *buf, int fd)
 491 {
 492    unsigned int offsets[3] = { 0, 0, 0 };
 493    unsigned int pitches[3] = { 0, 0, 0 };
 494
 495    const int fourcc = get_fourcc(buf->format);
 496    if (fourcc == -1) {
 497       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 498       return NULL;
 499    }
 500
 501    pitches[0] = buf->stride * get_format_bpp(buf->format);
 502    if (pitches[0] == 0) {
 503       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 504       return NULL;
 505    }
 506
 507    switch (buf->format) {
 508    case HAL_PIXEL_FORMAT_YV12:
 509       /* Y plane is assumed to be at offset 0. */
 510       /* Cr plane is located after Y plane */
 511       offsets[1] = offsets[0] + pitches[0] * buf->height;
 512       pitches[1] = ALIGN(pitches[0] / 2, 16);
 513       /* Cb plane is located after Cr plane */
 514       offsets[2] = offsets[1] + pitches[1] * buf->height / 2;
 515       pitches[2] = pitches[1];
 516
 517       const EGLint attr_list_yv12[] = {
 518          EGL_WIDTH, buf->width,
 519          EGL_HEIGHT, buf->height,
 520          EGL_LINUX_DRM_FOURCC_EXT, fourcc,
 521          EGL_DMA_BUF_PLANE0_FD_EXT, fd,
 522          EGL_DMA_BUF_PLANE0_PITCH_EXT, pitches[0],
 523          EGL_DMA_BUF_PLANE0_OFFSET_EXT, offsets[0],
 524          EGL_DMA_BUF_PLANE1_FD_EXT, fd,
 525          EGL_DMA_BUF_PLANE1_PITCH_EXT, pitches[1],
 526          EGL_DMA_BUF_PLANE1_OFFSET_EXT, offsets[1],
 527          EGL_DMA_BUF_PLANE2_FD_EXT, fd,
 528          EGL_DMA_BUF_PLANE2_PITCH_EXT, pitches[2],
 529          EGL_DMA_BUF_PLANE2_OFFSET_EXT, offsets[2],
 530          EGL_NONE, 0
 531       };
 532
 533       return dri2_create_image_dma_buf(disp, ctx, NULL, attr_list_yv12);
 534    }
 535
 536    const EGLint attr_list[] = {
 537       EGL_WIDTH, buf->width,
 538       EGL_HEIGHT, buf->height,
 539       EGL_LINUX_DRM_FOURCC_EXT, fourcc,
 540       EGL_DMA_BUF_PLANE0_FD_EXT, fd,
 541       EGL_DMA_BUF_PLANE0_PITCH_EXT, pitches[0],
 542       EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
 543       EGL_NONE, 0
 544    };
 545
 546    return dri2_create_image_dma_buf(disp, ctx, NULL, attr_list);
 547 }
 548
 549 static _EGLImage *
 550 droid_create_image_from_name(_EGLDisplay *disp, _EGLContext *ctx,
 551                              struct ANativeWindowBuffer *buf)
 552 {
 553    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 554    struct dri2_egl_image *dri2_img;
 555    int name;
 556    int format;
 557
 558    name = get_native_buffer_name(buf);
 559    if (!name) {
 560       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 561       return NULL;
 562    }
 563
 564    format = get_format(buf->format);
 565    if (format == -1)
 566        return NULL;
 567
 568    dri2_img = calloc(1, sizeof(*dri2_img));
 569    if (!dri2_img) {
 570       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 571       return NULL;
 572    }
 573
 574    if (!_eglInitImage(&dri2_img->base, disp)) {
 575       free(dri2_img);
 576       return NULL;
 577    }
 578
 579    dri2_img->dri_image =
 580       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
 581                                            buf->width,
 582                                            buf->height,
 583                                            format,
 584                                            name,
 585                                            buf->stride,
 586                                            dri2_img);
 587    if (!dri2_img->dri_image) {
 588       free(dri2_img);
 589       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 590       return NULL;
 591    }
 592
 593    return &dri2_img->base;
 594 }
 595
 596 static _EGLImage *
 597 dri2_create_image_android_native_buffer(_EGLDisplay *disp,
 598                                         _EGLContext *ctx,
 599                                         struct ANativeWindowBuffer *buf)
 600 {
 601    int fd;
 602
 603    if (ctx != NULL) {
 604       /* From the EGL_ANDROID_image_native_buffer spec:
 605        *
 606        *     * If <target> is EGL_NATIVE_BUFFER_ANDROID and <ctx> is not
 607        *       EGL_NO_CONTEXT, the error EGL_BAD_CONTEXT is generated.
 608        */
 609       _eglError(EGL_BAD_CONTEXT, "eglCreateEGLImageKHR: for "
 610                 "EGL_NATIVE_BUFFER_ANDROID, the context must be "
 611                 "EGL_NO_CONTEXT");
 612       return NULL;
 613    }
 614
 615    if (!buf || buf->common.magic != ANDROID_NATIVE_BUFFER_MAGIC ||
 616        buf->common.version != sizeof(*buf)) {
 617       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 618       return NULL;
 619    }
 620
 621    fd = get_native_buffer_fd(buf);
 622    if (fd >= 0)
 623       return droid_create_image_from_prime_fd(disp, ctx, buf, fd);
 624
 625    return droid_create_image_from_name(disp, ctx, buf);
 626 }
 627
 628 static _EGLImage *
 629 droid_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 630                        _EGLContext *ctx, EGLenum target,
 631                        EGLClientBuffer buffer, const EGLint *attr_list)
 632 {
 633    switch (target) {
 634    case EGL_NATIVE_BUFFER_ANDROID:
 635       return dri2_create_image_android_native_buffer(disp, ctx,
 636             (struct ANativeWindowBuffer *) buffer);
 637    default:
 638       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 639    }
 640 }
 641
 642 static void
 643 droid_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 644 {
 645 }
 646
 647 static int
 648 droid_get_buffers_parse_attachments(struct dri2_egl_surface *dri2_surf,
 649                                     unsigned int *attachments, int count)
 650 {
 651    int num_buffers = 0, i;
 652
 653    /* fill dri2_surf->buffers */
 654    for (i = 0; i < count * 2; i += 2) {
 655       __DRIbuffer *buf, *local;
 656
 657       assert(num_buffers < ARRAY_SIZE(dri2_surf->buffers));
 658       buf = &dri2_surf->buffers[num_buffers];
 659
 660       switch (attachments[i]) {
 661       case __DRI_BUFFER_BACK_LEFT:
 662          if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 663             buf->attachment = attachments[i];
 664             buf->name = get_native_buffer_name(dri2_surf->buffer);
 665             buf->cpp = get_format_bpp(dri2_surf->buffer->format);
 666             buf->pitch = dri2_surf->buffer->stride * buf->cpp;
 667             buf->flags = 0;
 668
 669             if (buf->name)
 670                num_buffers++;
 671
 672             break;
 673          }
 674          /* fall through for pbuffers */
 675       case __DRI_BUFFER_DEPTH:
 676       case __DRI_BUFFER_STENCIL:
 677       case __DRI_BUFFER_ACCUM:
 678       case __DRI_BUFFER_DEPTH_STENCIL:
 679       case __DRI_BUFFER_HIZ:
 680          local = droid_alloc_local_buffer(dri2_surf,
 681                attachments[i], attachments[i + 1]);
 682
 683          if (local) {
 684             *buf = *local;
 685             num_buffers++;
 686          }
 687          break;
 688       case __DRI_BUFFER_FRONT_LEFT:
 689       case __DRI_BUFFER_FRONT_RIGHT:
 690       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 691       case __DRI_BUFFER_FAKE_FRONT_RIGHT:
 692       case __DRI_BUFFER_BACK_RIGHT:
 693       default:
 694          /* no front or right buffers */
 695          break;
 696       }
 697    }
 698
 699    return num_buffers;
 700 }
 701
 702 static __DRIbuffer *
 703 droid_get_buffers_with_format(__DRIdrawable * driDrawable,
 704                              int *width, int *height,
 705                              unsigned int *attachments, int count,
 706                              int *out_count, void *loaderPrivate)
 707 {
 708    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 709
 710    if (update_buffers(dri2_surf) < 0)
 711       return NULL;
 712
 713    dri2_surf->buffer_count =
 714       droid_get_buffers_parse_attachments(dri2_surf, attachments, count);
 715
 716    if (width)
 717       *width = dri2_surf->base.Width;
 718    if (height)
 719       *height = dri2_surf->base.Height;
 720
 721    *out_count = dri2_surf->buffer_count;
 722
 723    return dri2_surf->buffers;
 724 }
 725
 726 static EGLBoolean
 727 droid_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *dpy)
 728 {
 729    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
 730    const struct {
 731       int format;
 732       unsigned int rgba_masks[4];
 733    } visuals[] = {
 734       { HAL_PIXEL_FORMAT_RGBA_8888, { 0xff, 0xff00, 0xff0000, 0xff000000 } },
 735       { HAL_PIXEL_FORMAT_RGBX_8888, { 0xff, 0xff00, 0xff0000, 0x0 } },
 736       { HAL_PIXEL_FORMAT_RGB_888,   { 0xff, 0xff00, 0xff0000, 0x0 } },
 737       { HAL_PIXEL_FORMAT_RGB_565,   { 0xf800, 0x7e0, 0x1f, 0x0 } },
 738       { HAL_PIXEL_FORMAT_BGRA_8888, { 0xff0000, 0xff00, 0xff, 0xff000000 } },
 739       { 0, { 0, 0, 0, 0 } }
 740    };
 741    EGLint config_attrs[] = {
 742      EGL_NATIVE_VISUAL_ID,   0,
 743      EGL_NATIVE_VISUAL_TYPE, 0,
 744      EGL_FRAMEBUFFER_TARGET_ANDROID, EGL_TRUE,
 745      EGL_RECORDABLE_ANDROID, EGL_TRUE,
 746      EGL_NONE
 747    };
 748    int count, i, j;
 749
 750    count = 0;
 751    for (i = 0; visuals[i].format; i++) {
 752       int format_count = 0;
 753
 754       config_attrs[1] = visuals[i].format;
 755       config_attrs[3] = visuals[i].format;
 756
 757       for (j = 0; dri2_dpy->driver_configs[j]; j++) {
 758          const EGLint surface_type = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
 759          struct dri2_egl_config *dri2_conf;
 760          unsigned int double_buffered = 0;
 761
 762          dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[j],
 763             __DRI_ATTRIB_DOUBLE_BUFFER, &double_buffered);
 764
 765          /* support only double buffered configs */
 766          if (!double_buffered)
 767             continue;
 768
 769          dri2_conf = dri2_add_config(dpy, dri2_dpy->driver_configs[j],
 770                count + 1, surface_type, config_attrs, visuals[i].rgba_masks);
 771          if (dri2_conf) {
 772             count++;
 773             format_count++;
 774          }
 775       }
 776
 777       if (!format_count) {
 778          _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x",
 779                visuals[i].format);
 780       }
 781    }
 782
 783    /* post-process configs */
 784    for (i = 0; i < dpy->Configs->Size; i++) {
 785       struct dri2_egl_config *dri2_conf = dri2_egl_config(dpy->Configs->Elements[i]);
 786
 787       /* there is no front buffer so no OpenGL */
 788       dri2_conf->base.RenderableType &= ~EGL_OPENGL_BIT;
 789       dri2_conf->base.Conformant &= ~EGL_OPENGL_BIT;
 790    }
 791
 792    return (count != 0);
 793 }
 794
 795 static int
 796 droid_open_device(void)
 797 {
 798    const hw_module_t *mod;
 799    int fd = -1, err;
 800
 801    err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &mod);
 802    if (!err) {
 803       const gralloc_module_t *gr = (gralloc_module_t *) mod;
 804
 805       err = -EINVAL;
 806       if (gr->perform)
 807          err = gr->perform(gr, GRALLOC_MODULE_PERFORM_GET_DRM_FD, &fd);
 808    }
 809    if (err || fd < 0) {
 810       _eglLog(_EGL_WARNING, "fail to get drm fd");
 811       fd = -1;
 812    }
 813
 814    return (fd >= 0) ? dup(fd) : -1;
 815 }
 816
 817 /* support versions < JellyBean */
 818 #ifndef ALOGW
 819 #define ALOGW LOGW
 820 #endif
 821 #ifndef ALOGD
 822 #define ALOGD LOGD
 823 #endif
 824 #ifndef ALOGI
 825 #define ALOGI LOGI
 826 #endif
 827
 828 static void
 829 droid_log(EGLint level, const char *msg)
 830 {
 831    switch (level) {
 832    case _EGL_DEBUG:
 833       ALOGD("%s", msg);
 834       break;
 835    case _EGL_INFO:
 836       ALOGI("%s", msg);
 837       break;
 838    case _EGL_WARNING:
 839       ALOGW("%s", msg);
 840       break;
 841    case _EGL_FATAL:
 842       LOG_FATAL("%s", msg);
 843       break;
 844    default:
 845       break;
 846    }
 847 }
 848
 849 static struct dri2_egl_display_vtbl droid_display_vtbl = {
 850    .authenticate = NULL,
 851    .create_window_surface = droid_create_window_surface,
 852    .create_pixmap_surface = dri2_fallback_create_pixmap_surface,
 853    .create_pbuffer_surface = droid_create_pbuffer_surface,
 854    .destroy_surface = droid_destroy_surface,
 855    .create_image = droid_create_image_khr,
 856    .swap_interval = dri2_fallback_swap_interval,
 857    .swap_buffers = droid_swap_buffers,
 858    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
 859    .swap_buffers_region = dri2_fallback_swap_buffers_region,
 860    .post_sub_buffer = dri2_fallback_post_sub_buffer,
 861    .copy_buffers = dri2_fallback_copy_buffers,
 862    .query_buffer_age = dri2_fallback_query_buffer_age,
 863    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
 864    .get_sync_values = dri2_fallback_get_sync_values,
 865    .get_dri_drawable = dri2_surface_get_dri_drawable,
 866 };
 867
 868 static const __DRIimageLoaderExtension droid_image_loader_extension = {
 869    .base = { __DRI_IMAGE_LOADER, 1 },
 870
 871    .getBuffers          = droid_image_get_buffers,
 872    .flushFrontBuffer    = droid_flush_front_buffer,
 873 };
 874
 875 EGLBoolean
 876 dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *dpy)
 877 {
 878    struct dri2_egl_display *dri2_dpy;
 879    const char *err;
 880
 881    _eglSetLogProc(droid_log);
 882
 883    loader_set_logger(_eglLog);
 884
 885    dri2_dpy = calloc(1, sizeof(*dri2_dpy));
 886    if (!dri2_dpy)
 887       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 888
 889    dpy->DriverData = (void *) dri2_dpy;
 890
 891    dri2_dpy->fd = droid_open_device();
 892    if (dri2_dpy->fd < 0) {
 893       err = "DRI2: failed to open device";
 894       goto cleanup_display;
 895    }
 896
 897    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
 898    if (dri2_dpy->driver_name == NULL) {
 899       err = "DRI2: failed to get driver name";
 900       goto cleanup_device;
 901    }
 902
 903    if (!dri2_load_driver(dpy)) {
 904       err = "DRI2: failed to load driver";
 905       goto cleanup_driver_name;
 906    }
 907
 908    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
 909
 910    /* render nodes cannot use Gem names, and thus do not support
 911     * the __DRI_DRI2_LOADER extension */
 912    if (!dri2_dpy->is_render_node) {
 913       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 914       dri2_dpy->dri2_loader_extension.base.version = 3;
 915       dri2_dpy->dri2_loader_extension.getBuffers = NULL;
 916       dri2_dpy->dri2_loader_extension.flushFrontBuffer = droid_flush_front_buffer;
 917       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 918         droid_get_buffers_with_format;
 919       dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
 920    } else {
 921       dri2_dpy->extensions[0] = &droid_image_loader_extension.base;
 922    }
 923    dri2_dpy->extensions[1] = &use_invalidate.base;
 924    dri2_dpy->extensions[2] = &image_lookup_extension.base;
 925    dri2_dpy->extensions[3] = NULL;
 926
 927
 928    if (!dri2_create_screen(dpy)) {
 929       err = "DRI2: failed to create screen";
 930       goto cleanup_driver;
 931    }
 932
 933    if (!droid_add_configs_for_visuals(drv, dpy)) {
 934       err = "DRI2: failed to add configs";
 935       goto cleanup_screen;
 936    }
 937
 938    dpy->Extensions.ANDROID_framebuffer_target = EGL_TRUE;
 939    dpy->Extensions.ANDROID_image_native_buffer = EGL_TRUE;
 940    dpy->Extensions.ANDROID_recordable = EGL_TRUE;
 941    dpy->Extensions.KHR_image_base = EGL_TRUE;
 942
 943    /* Fill vtbl last to prevent accidentally calling virtual function during
 944     * initialization.
 945     */
 946    dri2_dpy->vtbl = &droid_display_vtbl;
 947
 948    return EGL_TRUE;
 949
 950 cleanup_screen:
 951    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 952 cleanup_driver:
 953    dlclose(dri2_dpy->driver);
 954 cleanup_driver_name:
 955    free(dri2_dpy->driver_name);
 956 cleanup_device:
 957    close(dri2_dpy->fd);
 958 cleanup_display:
 959    free(dri2_dpy);
 960
 961    return _eglError(EGL_NOT_INITIALIZED, err);
 962 }