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(struct dri2_egl_surface *dri2_surf)
 164 {
 165 #if ANDROID_VERSION >= 0x0402
 166    /* Queue the buffer without a sync fence. This informs the ANativeWindow
 167     * that it may access the buffer immediately.
 168     *
 169     * From ANativeWindow::dequeueBuffer:
 170     *
 171     *    The fenceFd argument specifies a libsync fence file descriptor for
 172     *    a fence that must signal before the buffer can be accessed.  If
 173     *    the buffer can be accessed immediately then a value of -1 should
 174     *    be used.  The caller must not use the file descriptor after it
 175     *    is passed to queueBuffer, and the ANativeWindow implementation
 176     *    is responsible for closing it.
 177     */
 178    int fence_fd = -1;
 179    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer,
 180                                   fence_fd);
 181 #else
 182    dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer);
 183 #endif
 184
 185    dri2_surf->buffer->common.decRef(&dri2_surf->buffer->common);
 186    dri2_surf->buffer = NULL;
 187
 188    return EGL_TRUE;
 189 }
 190
 191 static void
 192 droid_window_cancel_buffer(struct dri2_egl_surface *dri2_surf)
 193 {
 194    /* no cancel buffer? */
 195    droid_window_enqueue_buffer(dri2_surf);
 196 }
 197
 198 static __DRIbuffer *
 199 droid_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
 200                          unsigned int att, unsigned int format)
 201 {
 202    struct dri2_egl_display *dri2_dpy =
 203       dri2_egl_display(dri2_surf->base.Resource.Display);
 204
 205    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
 206       return NULL;
 207
 208    if (!dri2_surf->local_buffers[att]) {
 209       dri2_surf->local_buffers[att] =
 210          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
 211                dri2_surf->base.Width, dri2_surf->base.Height);
 212    }
 213
 214    return dri2_surf->local_buffers[att];
 215 }
 216
 217 static void
 218 droid_free_local_buffers(struct dri2_egl_surface *dri2_surf)
 219 {
 220    struct dri2_egl_display *dri2_dpy =
 221       dri2_egl_display(dri2_surf->base.Resource.Display);
 222    int i;
 223
 224    for (i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
 225       if (dri2_surf->local_buffers[i]) {
 226          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 227                dri2_surf->local_buffers[i]);
 228          dri2_surf->local_buffers[i] = NULL;
 229       }
 230    }
 231 }
 232
 233 static _EGLSurface *
 234 droid_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 235                     _EGLConfig *conf, void *native_window,
 236                     const EGLint *attrib_list)
 237 {
 238    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 239    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 240    struct dri2_egl_surface *dri2_surf;
 241    struct ANativeWindow *window = native_window;
 242    const __DRIconfig *config;
 243
 244    dri2_surf = calloc(1, sizeof *dri2_surf);
 245    if (!dri2_surf) {
 246       _eglError(EGL_BAD_ALLOC, "droid_create_surface");
 247       return NULL;
 248    }
 249
 250    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 251       goto cleanup_surface;
 252
 253    if (type == EGL_WINDOW_BIT) {
 254       int format;
 255
 256       if (!window || window->common.magic != ANDROID_NATIVE_WINDOW_MAGIC) {
 257          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 258          goto cleanup_surface;
 259       }
 260       if (window->query(window, NATIVE_WINDOW_FORMAT, &format)) {
 261          _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");
 262          goto cleanup_surface;
 263       }
 264
 265       if (format != dri2_conf->base.NativeVisualID) {
 266          _eglLog(_EGL_WARNING, "Native format mismatch: 0x%x != 0x%x",
 267                format, dri2_conf->base.NativeVisualID);
 268       }
 269
 270       window->query(window, NATIVE_WINDOW_WIDTH, &dri2_surf->base.Width);
 271       window->query(window, NATIVE_WINDOW_HEIGHT, &dri2_surf->base.Height);
 272    }
 273
 274    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 275                                 dri2_surf->base.GLColorspace);
 276
 277    dri2_surf->dri_drawable =
 278       (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen, config,
 279                                            dri2_surf);
 280    if (dri2_surf->dri_drawable == NULL) {
 281       _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
 282       goto cleanup_surface;
 283    }
 284
 285    if (window) {
 286       window->common.incRef(&window->common);
 287       dri2_surf->window = window;
 288    }
 289
 290    return &dri2_surf->base;
 291
 292 cleanup_surface:
 293    free(dri2_surf);
 294
 295    return NULL;
 296 }
 297
 298 static _EGLSurface *
 299 droid_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 300                             _EGLConfig *conf, void *native_window,
 301                             const EGLint *attrib_list)
 302 {
 303    return droid_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 304                                native_window, attrib_list);
 305 }
 306
 307 static _EGLSurface *
 308 droid_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
 309                             _EGLConfig *conf, const EGLint *attrib_list)
 310 {
 311    return droid_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
 312                               NULL, attrib_list);
 313 }
 314
 315 static EGLBoolean
 316 droid_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 317 {
 318    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 319    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 320
 321    if (!_eglPutSurface(surf))
 322       return EGL_TRUE;
 323
 324    droid_free_local_buffers(dri2_surf);
 325
 326    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 327       if (dri2_surf->buffer)
 328          droid_window_cancel_buffer(dri2_surf);
 329
 330       dri2_surf->window->common.decRef(&dri2_surf->window->common);
 331    }
 332
 333    (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
 334
 335    free(dri2_surf);
 336
 337    return EGL_TRUE;
 338 }
 339
 340 static int
 341 update_buffers(struct dri2_egl_surface *dri2_surf)
 342 {
 343    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 344       return 0;
 345
 346    /* try to dequeue the next back buffer */
 347    if (!dri2_surf->buffer && !droid_window_dequeue_buffer(dri2_surf))
 348       return -1;
 349
 350    /* free outdated buffers and update the surface size */
 351    if (dri2_surf->base.Width != dri2_surf->buffer->width ||
 352        dri2_surf->base.Height != dri2_surf->buffer->height) {
 353       droid_free_local_buffers(dri2_surf);
 354       dri2_surf->base.Width = dri2_surf->buffer->width;
 355       dri2_surf->base.Height = dri2_surf->buffer->height;
 356    }
 357
 358    return 0;
 359 }
 360
 361 static int
 362 get_back_bo(struct dri2_egl_surface *dri2_surf)
 363 {
 364    struct dri2_egl_display *dri2_dpy =
 365       dri2_egl_display(dri2_surf->base.Resource.Display);
 366    int fourcc, pitch;
 367    int offset = 0, fd;
 368
 369    if (!dri2_surf->buffer)
 370       return -1;
 371
 372    fd = get_native_buffer_fd(dri2_surf->buffer);
 373    if (fd < 0)
 374       return -1;
 375
 376    fourcc = get_fourcc(get_format(dri2_surf->buffer->format));
 377
 378    pitch = dri2_surf->buffer->stride *
 379       get_format_bpp(dri2_surf->buffer->format);
 380
 381    if (fourcc == -1 || pitch == 0)
 382       return -1;
 383
 384    dri2_surf->dri_image =
 385       dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
 386                                           dri2_surf->base.Width,
 387                                           dri2_surf->base.Height,
 388                                           fourcc,
 389                                           &fd,
 390                                           1,
 391                                           &pitch,
 392                                           &offset,
 393                                           dri2_surf);
 394    if (!dri2_surf->dri_image)
 395       return -1;
 396
 397    return 0;
 398 }
 399
 400 static int
 401 droid_image_get_buffers(__DRIdrawable *driDrawable,
 402                   unsigned int format,
 403                   uint32_t *stamp,
 404                   void *loaderPrivate,
 405                   uint32_t buffer_mask,
 406                   struct __DRIimageList *images)
 407 {
 408    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 409
 410    if (update_buffers(dri2_surf) < 0)
 411       return 0;
 412
 413    if (get_back_bo(dri2_surf) < 0) {
 414       _eglError(EGL_BAD_PARAMETER, "get_back_bo");
 415       return 0;
 416    }
 417
 418    images->image_mask = __DRI_IMAGE_BUFFER_BACK;
 419    images->back = dri2_surf->dri_image;
 420
 421    return 1;
 422 }
 423
 424 static EGLBoolean
 425 droid_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 426 {
 427    struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
 428    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 429    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 430    _EGLContext *ctx;
 431
 432    if (dri2_surf->base.Type != EGL_WINDOW_BIT)
 433       return EGL_TRUE;
 434
 435    if (dri2_drv->glFlush) {
 436       ctx = _eglGetCurrentContext();
 437       if (ctx && ctx->DrawSurface == &dri2_surf->base)
 438          dri2_drv->glFlush();
 439    }
 440
 441    dri2_flush_drawable_for_swapbuffers(disp, draw);
 442
 443    if (dri2_surf->buffer)
 444       droid_window_enqueue_buffer(dri2_surf);
 445
 446    (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
 447
 448    return EGL_TRUE;
 449 }
 450
 451 static _EGLImage *
 452 dri2_create_image_android_native_buffer(_EGLDriver *drv, _EGLDisplay *disp,
 453                                         _EGLContext *ctx,
 454                                         struct ANativeWindowBuffer *buf)
 455 {
 456    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 457    struct dri2_egl_image *dri2_img;
 458    int name, fd;
 459    int format;
 460
 461    if (ctx != NULL) {
 462       /* From the EGL_ANDROID_image_native_buffer spec:
 463        *
 464        *     * If <target> is EGL_NATIVE_BUFFER_ANDROID and <ctx> is not
 465        *       EGL_NO_CONTEXT, the error EGL_BAD_CONTEXT is generated.
 466        */
 467       _eglError(EGL_BAD_CONTEXT, "eglCreateEGLImageKHR: for "
 468                 "EGL_NATIVE_BUFFER_ANDROID, the context must be "
 469                 "EGL_NO_CONTEXT");
 470       return NULL;
 471    }
 472
 473    if (!buf || buf->common.magic != ANDROID_NATIVE_BUFFER_MAGIC ||
 474        buf->common.version != sizeof(*buf)) {
 475       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 476       return NULL;
 477    }
 478
 479    fd = get_native_buffer_fd(buf);
 480    if (fd >= 0) {
 481       const int fourcc = get_fourcc(get_format(buf->format));
 482       const int pitch = buf->stride * get_format_bpp(buf->format);
 483
 484       const EGLint attr_list[14] = {
 485          EGL_WIDTH, buf->width,
 486          EGL_HEIGHT, buf->height,
 487          EGL_LINUX_DRM_FOURCC_EXT, fourcc,
 488          EGL_DMA_BUF_PLANE0_FD_EXT, fd,
 489          EGL_DMA_BUF_PLANE0_PITCH_EXT, pitch,
 490          EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
 491          EGL_NONE, 0
 492       };
 493
 494       if (fourcc == -1 || pitch == 0)
 495          return NULL;
 496
 497       return dri2_create_image_khr(drv, disp, ctx, EGL_LINUX_DMA_BUF_EXT,
 498          NULL, attr_list);
 499    }
 500
 501    name = get_native_buffer_name(buf);
 502    if (!name) {
 503       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 504       return NULL;
 505    }
 506
 507    format = get_format(buf->format);
 508    if (format == -1)
 509        return NULL;
 510
 511    dri2_img = calloc(1, sizeof(*dri2_img));
 512    if (!dri2_img) {
 513       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 514       return NULL;
 515    }
 516
 517    if (!_eglInitImage(&dri2_img->base, disp)) {
 518       free(dri2_img);
 519       return NULL;
 520    }
 521
 522    dri2_img->dri_image =
 523       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
 524                                            buf->width,
 525                                            buf->height,
 526                                            format,
 527                                            name,
 528                                            buf->stride,
 529                                            dri2_img);
 530    if (!dri2_img->dri_image) {
 531       free(dri2_img);
 532       _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");
 533       return NULL;
 534    }
 535
 536    return &dri2_img->base;
 537 }
 538
 539 static _EGLImage *
 540 droid_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 541                        _EGLContext *ctx, EGLenum target,
 542                        EGLClientBuffer buffer, const EGLint *attr_list)
 543 {
 544    switch (target) {
 545    case EGL_NATIVE_BUFFER_ANDROID:
 546       return dri2_create_image_android_native_buffer(drv, disp, ctx,
 547             (struct ANativeWindowBuffer *) buffer);
 548    default:
 549       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 550    }
 551 }
 552
 553 static void
 554 droid_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 555 {
 556 }
 557
 558 static int
 559 droid_get_buffers_parse_attachments(struct dri2_egl_surface *dri2_surf,
 560                                     unsigned int *attachments, int count)
 561 {
 562    int num_buffers = 0, i;
 563
 564    /* fill dri2_surf->buffers */
 565    for (i = 0; i < count * 2; i += 2) {
 566       __DRIbuffer *buf, *local;
 567
 568       assert(num_buffers < ARRAY_SIZE(dri2_surf->buffers));
 569       buf = &dri2_surf->buffers[num_buffers];
 570
 571       switch (attachments[i]) {
 572       case __DRI_BUFFER_BACK_LEFT:
 573          if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 574             buf->attachment = attachments[i];
 575             buf->name = get_native_buffer_name(dri2_surf->buffer);
 576             buf->cpp = get_format_bpp(dri2_surf->buffer->format);
 577             buf->pitch = dri2_surf->buffer->stride * buf->cpp;
 578             buf->flags = 0;
 579
 580             if (buf->name)
 581                num_buffers++;
 582
 583             break;
 584          }
 585          /* fall through for pbuffers */
 586       case __DRI_BUFFER_DEPTH:
 587       case __DRI_BUFFER_STENCIL:
 588       case __DRI_BUFFER_ACCUM:
 589       case __DRI_BUFFER_DEPTH_STENCIL:
 590       case __DRI_BUFFER_HIZ:
 591          local = droid_alloc_local_buffer(dri2_surf,
 592                attachments[i], attachments[i + 1]);
 593
 594          if (local) {
 595             *buf = *local;
 596             num_buffers++;
 597          }
 598          break;
 599       case __DRI_BUFFER_FRONT_LEFT:
 600       case __DRI_BUFFER_FRONT_RIGHT:
 601       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 602       case __DRI_BUFFER_FAKE_FRONT_RIGHT:
 603       case __DRI_BUFFER_BACK_RIGHT:
 604       default:
 605          /* no front or right buffers */
 606          break;
 607       }
 608    }
 609
 610    return num_buffers;
 611 }
 612
 613 static __DRIbuffer *
 614 droid_get_buffers_with_format(__DRIdrawable * driDrawable,
 615                              int *width, int *height,
 616                              unsigned int *attachments, int count,
 617                              int *out_count, void *loaderPrivate)
 618 {
 619    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 620    struct dri2_egl_display *dri2_dpy =
 621       dri2_egl_display(dri2_surf->base.Resource.Display);
 622    int i;
 623
 624    if (update_buffers(dri2_surf) < 0)
 625       return NULL;
 626
 627    dri2_surf->buffer_count =
 628       droid_get_buffers_parse_attachments(dri2_surf, attachments, count);
 629
 630    if (width)
 631       *width = dri2_surf->base.Width;
 632    if (height)
 633       *height = dri2_surf->base.Height;
 634
 635    *out_count = dri2_surf->buffer_count;
 636
 637    return dri2_surf->buffers;
 638 }
 639
 640 static EGLBoolean
 641 droid_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *dpy)
 642 {
 643    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
 644    const struct {
 645       int format;
 646       unsigned int rgba_masks[4];
 647    } visuals[] = {
 648       { HAL_PIXEL_FORMAT_RGBA_8888, { 0xff, 0xff00, 0xff0000, 0xff000000 } },
 649       { HAL_PIXEL_FORMAT_RGBX_8888, { 0xff, 0xff00, 0xff0000, 0x0 } },
 650       { HAL_PIXEL_FORMAT_RGB_888,   { 0xff, 0xff00, 0xff0000, 0x0 } },
 651       { HAL_PIXEL_FORMAT_RGB_565,   { 0xf800, 0x7e0, 0x1f, 0x0 } },
 652       { HAL_PIXEL_FORMAT_BGRA_8888, { 0xff0000, 0xff00, 0xff, 0xff000000 } },
 653       { 0, { 0, 0, 0, 0 } }
 654    };
 655    EGLint config_attrs[] = {
 656      EGL_NATIVE_VISUAL_ID,   0,
 657      EGL_NATIVE_VISUAL_TYPE, 0,
 658      EGL_FRAMEBUFFER_TARGET_ANDROID, EGL_TRUE,
 659      EGL_RECORDABLE_ANDROID, EGL_TRUE,
 660      EGL_NONE
 661    };
 662    int count, i, j;
 663
 664    count = 0;
 665    for (i = 0; visuals[i].format; i++) {
 666       int format_count = 0;
 667
 668       config_attrs[1] = visuals[i].format;
 669       config_attrs[3] = visuals[i].format;
 670
 671       for (j = 0; dri2_dpy->driver_configs[j]; j++) {
 672          const EGLint surface_type = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
 673          struct dri2_egl_config *dri2_conf;
 674          unsigned int double_buffered = 0;
 675
 676          dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[j],
 677             __DRI_ATTRIB_DOUBLE_BUFFER, &double_buffered);
 678
 679          /* support only double buffered configs */
 680          if (!double_buffered)
 681             continue;
 682
 683          dri2_conf = dri2_add_config(dpy, dri2_dpy->driver_configs[j],
 684                count + 1, surface_type, config_attrs, visuals[i].rgba_masks);
 685          if (dri2_conf) {
 686             count++;
 687             format_count++;
 688          }
 689       }
 690
 691       if (!format_count) {
 692          _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x",
 693                visuals[i].format);
 694       }
 695    }
 696
 697    /* post-process configs */
 698    for (i = 0; i < dpy->Configs->Size; i++) {
 699       struct dri2_egl_config *dri2_conf = dri2_egl_config(dpy->Configs->Elements[i]);
 700
 701       /* there is no front buffer so no OpenGL */
 702       dri2_conf->base.RenderableType &= ~EGL_OPENGL_BIT;
 703       dri2_conf->base.Conformant &= ~EGL_OPENGL_BIT;
 704    }
 705
 706    return (count != 0);
 707 }
 708
 709 static int
 710 droid_open_device(void)
 711 {
 712    const hw_module_t *mod;
 713    int fd = -1, err;
 714
 715    err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &mod);
 716    if (!err) {
 717       const gralloc_module_t *gr = (gralloc_module_t *) mod;
 718
 719       err = -EINVAL;
 720       if (gr->perform)
 721          err = gr->perform(gr, GRALLOC_MODULE_PERFORM_GET_DRM_FD, &fd);
 722    }
 723    if (err || fd < 0) {
 724       _eglLog(_EGL_WARNING, "fail to get drm fd");
 725       fd = -1;
 726    }
 727
 728    return (fd >= 0) ? dup(fd) : -1;
 729 }
 730
 731 /* support versions < JellyBean */
 732 #ifndef ALOGW
 733 #define ALOGW LOGW
 734 #endif
 735 #ifndef ALOGD
 736 #define ALOGD LOGD
 737 #endif
 738 #ifndef ALOGI
 739 #define ALOGI LOGI
 740 #endif
 741
 742 static void
 743 droid_log(EGLint level, const char *msg)
 744 {
 745    switch (level) {
 746    case _EGL_DEBUG:
 747       ALOGD("%s", msg);
 748       break;
 749    case _EGL_INFO:
 750       ALOGI("%s", msg);
 751       break;
 752    case _EGL_WARNING:
 753       ALOGW("%s", msg);
 754       break;
 755    case _EGL_FATAL:
 756       LOG_FATAL("%s", msg);
 757       break;
 758    default:
 759       break;
 760    }
 761 }
 762
 763 static struct dri2_egl_display_vtbl droid_display_vtbl = {
 764    .authenticate = NULL,
 765    .create_window_surface = droid_create_window_surface,
 766    .create_pixmap_surface = dri2_fallback_create_pixmap_surface,
 767    .create_pbuffer_surface = droid_create_pbuffer_surface,
 768    .destroy_surface = droid_destroy_surface,
 769    .create_image = droid_create_image_khr,
 770    .swap_interval = dri2_fallback_swap_interval,
 771    .swap_buffers = droid_swap_buffers,
 772    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
 773    .swap_buffers_region = dri2_fallback_swap_buffers_region,
 774    .post_sub_buffer = dri2_fallback_post_sub_buffer,
 775    .copy_buffers = dri2_fallback_copy_buffers,
 776    .query_buffer_age = dri2_fallback_query_buffer_age,
 777    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
 778    .get_sync_values = dri2_fallback_get_sync_values,
 779    .get_dri_drawable = dri2_surface_get_dri_drawable,
 780 };
 781
 782 static const __DRIimageLoaderExtension droid_image_loader_extension = {
 783    .base = { __DRI_IMAGE_LOADER, 1 },
 784
 785    .getBuffers          = droid_image_get_buffers,
 786    .flushFrontBuffer    = droid_flush_front_buffer,
 787 };
 788
 789 EGLBoolean
 790 dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *dpy)
 791 {
 792    struct dri2_egl_display *dri2_dpy;
 793    const char *err;
 794
 795    _eglSetLogProc(droid_log);
 796
 797    loader_set_logger(_eglLog);
 798
 799    dri2_dpy = calloc(1, sizeof(*dri2_dpy));
 800    if (!dri2_dpy)
 801       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 802
 803    dpy->DriverData = (void *) dri2_dpy;
 804
 805    dri2_dpy->fd = droid_open_device();
 806    if (dri2_dpy->fd < 0) {
 807       err = "DRI2: failed to open device";
 808       goto cleanup_display;
 809    }
 810
 811    dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
 812    if (dri2_dpy->driver_name == NULL) {
 813       err = "DRI2: failed to get driver name";
 814       goto cleanup_device;
 815    }
 816
 817    if (!dri2_load_driver(dpy)) {
 818       err = "DRI2: failed to load driver";
 819       goto cleanup_driver_name;
 820    }
 821
 822    dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
 823
 824    dri2_dpy->extensions[0] = &droid_image_loader_extension.base;
 825    dri2_dpy->extensions[1] = &use_invalidate.base;
 826    dri2_dpy->extensions[2] = &image_lookup_extension.base;
 827
 828    /* render nodes cannot use Gem names, and thus do not support
 829     * the __DRI_DRI2_LOADER extension */
 830    if (!dri2_dpy->is_render_node) {
 831       dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
 832       dri2_dpy->dri2_loader_extension.base.version = 3;
 833       dri2_dpy->dri2_loader_extension.getBuffers = NULL;
 834       dri2_dpy->dri2_loader_extension.flushFrontBuffer = droid_flush_front_buffer;
 835       dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
 836         droid_get_buffers_with_format;
 837       dri2_dpy->extensions[3] = &dri2_dpy->dri2_loader_extension.base;
 838       dri2_dpy->extensions[4] = NULL;
 839    } else
 840       dri2_dpy->extensions[3] = NULL;
 841
 842
 843    if (!dri2_create_screen(dpy)) {
 844       err = "DRI2: failed to create screen";
 845       goto cleanup_driver;
 846    }
 847
 848    if (!droid_add_configs_for_visuals(drv, dpy)) {
 849       err = "DRI2: failed to add configs";
 850       goto cleanup_screen;
 851    }
 852
 853    dpy->Extensions.ANDROID_framebuffer_target = EGL_TRUE;
 854    dpy->Extensions.ANDROID_image_native_buffer = EGL_TRUE;
 855    dpy->Extensions.ANDROID_recordable = EGL_TRUE;
 856    dpy->Extensions.KHR_image_base = EGL_TRUE;
 857
 858    /* Fill vtbl last to prevent accidentally calling virtual function during
 859     * initialization.
 860     */
 861    dri2_dpy->vtbl = &droid_display_vtbl;
 862
 863    return EGL_TRUE;
 864
 865 cleanup_screen:
 866    dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
 867 cleanup_driver:
 868    dlclose(dri2_dpy->driver);
 869 cleanup_driver_name:
 870    free(dri2_dpy->driver_name);
 871 cleanup_device:
 872    close(dri2_dpy->fd);
 873 cleanup_display:
 874    free(dri2_dpy);
 875
 876    return _eglError(EGL_NOT_INITIALIZED, err);
 877 }