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