src/egl/drivers/dri2/platform_drm.c

   1 /*
   2  * Copyright © 2011 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdint.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <xf86drm.h>
  33 #include <dlfcn.h>
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <fcntl.h>
  37 #include <unistd.h>
  38
  39 #include "egl_dri2.h"
  40 #include "egl_dri2_fallbacks.h"
  41 #include "loader.h"
  42
  43 static struct gbm_bo *
  44 lock_front_buffer(struct gbm_surface *_surf)
  45 {
  46    struct gbm_dri_surface *surf = (struct gbm_dri_surface *) _surf;
  47    struct dri2_egl_surface *dri2_surf = surf->dri_private;
  48    struct gbm_dri_device *device = (struct gbm_dri_device *) _surf->gbm;
  49    struct gbm_bo *bo;
  50
  51    if (dri2_surf->current == NULL) {
  52       _eglError(EGL_BAD_SURFACE, "no front buffer");
  53       return NULL;
  54    }
  55
  56    bo = dri2_surf->current->bo;
  57
  58    if (device->dri2) {
  59       dri2_surf->current->locked = true;
  60       dri2_surf->current = NULL;
  61    }
  62
  63    return bo;
  64 }
  65
  66 static void
  67 release_buffer(struct gbm_surface *_surf, struct gbm_bo *bo)
  68 {
  69    struct gbm_dri_surface *surf = (struct gbm_dri_surface *) _surf;
  70    struct dri2_egl_surface *dri2_surf = surf->dri_private;
  71
  72    for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
  73       if (dri2_surf->color_buffers[i].bo == bo) {
  74          dri2_surf->color_buffers[i].locked = false;
  75          break;
  76       }
  77    }
  78 }
  79
  80 static int
  81 has_free_buffers(struct gbm_surface *_surf)
  82 {
  83    struct gbm_dri_surface *surf = (struct gbm_dri_surface *) _surf;
  84    struct dri2_egl_surface *dri2_surf = surf->dri_private;
  85
  86    for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
  87       if (!dri2_surf->color_buffers[i].locked)
  88          return 1;
  89
  90    return 0;
  91 }
  92
  93 static _EGLSurface *
  94 dri2_drm_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
  95                         _EGLConfig *conf, void *native_window,
  96                         const EGLint *attrib_list)
  97 {
  98    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
  99    struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
 100    struct dri2_egl_surface *dri2_surf;
 101    struct gbm_surface *window = native_window;
 102    struct gbm_dri_surface *surf;
 103    const __DRIconfig *config;
 104
 105    (void) drv;
 106
 107    dri2_surf = calloc(1, sizeof *dri2_surf);
 108    if (!dri2_surf) {
 109       _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
 110       return NULL;
 111    }
 112
 113    if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
 114       goto cleanup_surf;
 115
 116    switch (type) {
 117    case EGL_WINDOW_BIT:
 118       if (!window) {
 119          _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
 120          goto cleanup_surf;
 121       }
 122
 123       surf = gbm_dri_surface(window);
 124       dri2_surf->gbm_surf = surf;
 125       dri2_surf->base.Width =  surf->base.width;
 126       dri2_surf->base.Height = surf->base.height;
 127       surf->dri_private = dri2_surf;
 128       break;
 129    default:
 130       goto cleanup_surf;
 131    }
 132
 133    config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
 134                                 dri2_surf->base.GLColorspace);
 135
 136    if (dri2_dpy->dri2) {
 137       dri2_surf->dri_drawable =
 138          dri2_dpy->dri2->createNewDrawable(dri2_dpy->dri_screen, config,
 139                                            dri2_surf->gbm_surf);
 140
 141    } else {
 142       assert(dri2_dpy->swrast != NULL);
 143
 144       dri2_surf->dri_drawable =
 145          dri2_dpy->swrast->createNewDrawable(dri2_dpy->dri_screen, config,
 146                                              dri2_surf->gbm_surf);
 147
 148    }
 149    if (dri2_surf->dri_drawable == NULL) {
 150       _eglError(EGL_BAD_ALLOC, "createNewDrawable()");
 151       goto cleanup_surf;
 152    }
 153
 154    return &dri2_surf->base;
 155
 156  cleanup_surf:
 157    free(dri2_surf);
 158
 159    return NULL;
 160 }
 161
 162 static _EGLSurface *
 163 dri2_drm_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
 164                                _EGLConfig *conf, void *native_window,
 165                                const EGLint *attrib_list)
 166 {
 167    return dri2_drm_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
 168                                   native_window, attrib_list);
 169 }
 170
 171 static _EGLSurface *
 172 dri2_drm_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
 173                                _EGLConfig *conf, void *native_window,
 174                                const EGLint *attrib_list)
 175 {
 176    /* From the EGL_MESA_platform_gbm spec, version 5:
 177     *
 178     *  It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
 179     *  that belongs to the GBM platform. Any such call fails and generates
 180     *  EGL_BAD_PARAMETER.
 181     */
 182    _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on GBM");
 183    return NULL;
 184 }
 185
 186 static EGLBoolean
 187 dri2_drm_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 188 {
 189    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 190    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
 191
 192    dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 193
 194    for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 195       if (dri2_surf->color_buffers[i].bo)
 196          gbm_bo_destroy(dri2_surf->color_buffers[i].bo);
 197    }
 198
 199    for (unsigned i = 0; i < __DRI_BUFFER_COUNT; i++) {
 200       if (dri2_surf->dri_buffers[i])
 201          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
 202                                        dri2_surf->dri_buffers[i]);
 203    }
 204
 205    free(surf);
 206
 207    return EGL_TRUE;
 208 }
 209
 210 static int
 211 get_back_bo(struct dri2_egl_surface *dri2_surf)
 212 {
 213    struct dri2_egl_display *dri2_dpy =
 214       dri2_egl_display(dri2_surf->base.Resource.Display);
 215    struct gbm_dri_surface *surf = dri2_surf->gbm_surf;
 216    int age = 0;
 217
 218    if (dri2_surf->back == NULL) {
 219       for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
 220          if (!dri2_surf->color_buffers[i].locked &&
 221               dri2_surf->color_buffers[i].age >= age) {
 222             dri2_surf->back = &dri2_surf->color_buffers[i];
 223             age = dri2_surf->color_buffers[i].age;
 224          }
 225       }
 226    }
 227
 228    if (dri2_surf->back == NULL)
 229       return -1;
 230    if (dri2_surf->back->bo == NULL) {
 231       if (surf->base.modifiers)
 232          dri2_surf->back->bo = gbm_bo_create_with_modifiers(&dri2_dpy->gbm_dri->base,
 233                                                             surf->base.width,
 234                                                             surf->base.height,
 235                                                             surf->base.format,
 236                                                             surf->base.modifiers,
 237                                                             surf->base.count);
 238       else
 239          dri2_surf->back->bo = gbm_bo_create(&dri2_dpy->gbm_dri->base,
 240                                              surf->base.width,
 241                                              surf->base.height,
 242                                              surf->base.format,
 243                                              surf->base.flags);
 244
 245    }
 246    if (dri2_surf->back->bo == NULL)
 247       return -1;
 248
 249    return 0;
 250 }
 251
 252 static int
 253 get_swrast_front_bo(struct dri2_egl_surface *dri2_surf)
 254 {
 255    struct dri2_egl_display *dri2_dpy =
 256       dri2_egl_display(dri2_surf->base.Resource.Display);
 257    struct gbm_dri_surface *surf = dri2_surf->gbm_surf;
 258
 259    if (dri2_surf->current == NULL) {
 260       assert(!dri2_surf->color_buffers[0].locked);
 261       dri2_surf->current = &dri2_surf->color_buffers[0];
 262    }
 263
 264    if (dri2_surf->current->bo == NULL)
 265       dri2_surf->current->bo = gbm_bo_create(&dri2_dpy->gbm_dri->base,
 266                                              surf->base.width, surf->base.height,
 267                                              surf->base.format, surf->base.flags);
 268    if (dri2_surf->current->bo == NULL)
 269       return -1;
 270
 271    return 0;
 272 }
 273
 274 static void
 275 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
 276 {
 277    struct dri2_egl_display *dri2_dpy =
 278       dri2_egl_display(dri2_surf->base.Resource.Display);
 279    struct gbm_dri_bo *bo;
 280    int name, pitch;
 281
 282    bo = (struct gbm_dri_bo *) dri2_surf->back->bo;
 283
 284    dri2_dpy->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_NAME, &name);
 285    dri2_dpy->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
 286
 287    buffer->attachment = __DRI_BUFFER_BACK_LEFT;
 288    buffer->name = name;
 289    buffer->pitch = pitch;
 290    buffer->cpp = 4;
 291    buffer->flags = 0;
 292 }
 293
 294 static int
 295 get_aux_bo(struct dri2_egl_surface *dri2_surf,
 296            unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
 297 {
 298    struct dri2_egl_display *dri2_dpy =
 299       dri2_egl_display(dri2_surf->base.Resource.Display);
 300    __DRIbuffer *b = dri2_surf->dri_buffers[attachment];
 301
 302    if (b == NULL) {
 303       b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
 304                                          attachment, format,
 305                                          dri2_surf->base.Width,
 306                                          dri2_surf->base.Height);
 307       dri2_surf->dri_buffers[attachment] = b;
 308    }
 309    if (b == NULL)
 310       return -1;
 311
 312    memcpy(buffer, b, sizeof *buffer);
 313
 314    return 0;
 315 }
 316
 317 static __DRIbuffer *
 318 dri2_drm_get_buffers_with_format(__DRIdrawable *driDrawable,
 319                              int *width, int *height,
 320                              unsigned int *attachments, int count,
 321                              int *out_count, void *loaderPrivate)
 322 {
 323    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 324    int i, j;
 325
 326    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 327       assert(attachments[i] < __DRI_BUFFER_COUNT);
 328       assert(j < ARRAY_SIZE(dri2_surf->buffers));
 329
 330       switch (attachments[i]) {
 331       case __DRI_BUFFER_BACK_LEFT:
 332          if (get_back_bo(dri2_surf) < 0) {
 333             _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 334             return NULL;
 335          }
 336          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 337          break;
 338       default:
 339          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 340                         &dri2_surf->buffers[j]) < 0) {
 341             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 342             return NULL;
 343          }
 344          break;
 345       }
 346    }
 347
 348    *out_count = j;
 349    if (j == 0)
 350       return NULL;
 351
 352    *width = dri2_surf->base.Width;
 353    *height = dri2_surf->base.Height;
 354
 355    return dri2_surf->buffers;
 356 }
 357
 358 static __DRIbuffer *
 359 dri2_drm_get_buffers(__DRIdrawable * driDrawable,
 360                      int *width, int *height,
 361                      unsigned int *attachments, int count,
 362                      int *out_count, void *loaderPrivate)
 363 {
 364    unsigned int *attachments_with_format;
 365    __DRIbuffer *buffer;
 366    const unsigned int format = 32;
 367
 368    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 369    if (!attachments_with_format) {
 370       *out_count = 0;
 371       return NULL;
 372    }
 373
 374    for (int i = 0; i < count; ++i) {
 375       attachments_with_format[2*i] = attachments[i];
 376       attachments_with_format[2*i + 1] = format;
 377    }
 378
 379    buffer =
 380       dri2_drm_get_buffers_with_format(driDrawable,
 381                                        width, height,
 382                                        attachments_with_format, count,
 383                                        out_count, loaderPrivate);
 384
 385    free(attachments_with_format);
 386
 387    return buffer;
 388 }
 389
 390 static int
 391 dri2_drm_image_get_buffers(__DRIdrawable *driDrawable,
 392                            unsigned int format,
 393                            uint32_t *stamp,
 394                            void *loaderPrivate,
 395                            uint32_t buffer_mask,
 396                            struct __DRIimageList *buffers)
 397 {
 398    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 399    struct gbm_dri_bo *bo;
 400
 401    if (get_back_bo(dri2_surf) < 0)
 402       return 0;
 403
 404    bo = (struct gbm_dri_bo *) dri2_surf->back->bo;
 405    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 406    buffers->back = bo->image;
 407
 408    return 1;
 409 }
 410
 411 static void
 412 dri2_drm_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 413 {
 414    (void) driDrawable;
 415    (void) loaderPrivate;
 416 }
 417
 418 static EGLBoolean
 419 dri2_drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 420 {
 421    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 422    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 423
 424    if (!dri2_dpy->flush) {
 425       dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
 426       return EGL_TRUE;
 427    }
 428
 429    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 430       if (dri2_surf->current)
 431          _eglError(EGL_BAD_SURFACE, "dri2_swap_buffers");
 432       for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 433          if (dri2_surf->color_buffers[i].age > 0)
 434             dri2_surf->color_buffers[i].age++;
 435
 436       /* Make sure we have a back buffer in case we're swapping without
 437        * ever rendering. */
 438       if (get_back_bo(dri2_surf) < 0)
 439          return _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 440
 441       dri2_surf->current = dri2_surf->back;
 442       dri2_surf->current->age = 1;
 443       dri2_surf->back = NULL;
 444    }
 445
 446    dri2_flush_drawable_for_swapbuffers(disp, draw);
 447    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 448
 449    return EGL_TRUE;
 450 }
 451
 452 static EGLint
 453 dri2_drm_query_buffer_age(_EGLDriver *drv,
 454                           _EGLDisplay *disp, _EGLSurface *surface)
 455 {
 456    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 457
 458    if (get_back_bo(dri2_surf) < 0) {
 459       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 460       return -1;
 461    }
 462
 463    return dri2_surf->back->age;
 464 }
 465
 466 static _EGLImage *
 467 dri2_drm_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 468                                  EGLClientBuffer buffer, const EGLint *attr_list)
 469 {
 470    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 471    struct gbm_dri_bo *dri_bo = gbm_dri_bo((struct gbm_bo *) buffer);
 472    struct dri2_egl_image *dri2_img;
 473
 474    dri2_img = malloc(sizeof *dri2_img);
 475    if (!dri2_img) {
 476       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
 477       return NULL;
 478    }
 479
 480    _eglInitImage(&dri2_img->base, disp);
 481
 482    dri2_img->dri_image = dri2_dpy->image->dupImage(dri_bo->image, dri2_img);
 483    if (dri2_img->dri_image == NULL) {
 484       free(dri2_img);
 485       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
 486       return NULL;
 487    }
 488
 489    return &dri2_img->base;
 490 }
 491
 492 static _EGLImage *
 493 dri2_drm_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 494                           _EGLContext *ctx, EGLenum target,
 495                           EGLClientBuffer buffer, const EGLint *attr_list)
 496 {
 497    (void) drv;
 498
 499    switch (target) {
 500    case EGL_NATIVE_PIXMAP_KHR:
 501       return dri2_drm_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
 502    default:
 503       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 504    }
 505 }
 506
 507 static int
 508 dri2_drm_authenticate(_EGLDisplay *disp, uint32_t id)
 509 {
 510    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 511
 512    return drmAuthMagic(dri2_dpy->fd, id);
 513 }
 514
 515 static void
 516 swrast_put_image2(__DRIdrawable *driDrawable,
 517                   int            op,
 518                   int            x,
 519                   int            y,
 520                   int            width,
 521                   int            height,
 522                   int            stride,
 523                   char          *data,
 524                   void          *loaderPrivate)
 525 {
 526    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 527    int internal_stride;
 528    struct gbm_dri_bo *bo;
 529
 530    if (op != __DRI_SWRAST_IMAGE_OP_DRAW &&
 531        op != __DRI_SWRAST_IMAGE_OP_SWAP)
 532       return;
 533
 534    if (get_swrast_front_bo(dri2_surf) < 0)
 535       return;
 536
 537    bo = gbm_dri_bo(dri2_surf->current->bo);
 538    if (gbm_dri_bo_map_dumb(bo) == NULL)
 539       return;
 540
 541    internal_stride = bo->base.stride;
 542
 543    for (int i = 0; i < height; i++) {
 544       memcpy(bo->map + (x + i) * internal_stride + y,
 545              data + i * stride, stride);
 546    }
 547
 548    gbm_dri_bo_unmap_dumb(bo);
 549 }
 550
 551 static void
 552 swrast_get_image(__DRIdrawable *driDrawable,
 553                  int            x,
 554                  int            y,
 555                  int            width,
 556                  int            height,
 557                  char          *data,
 558                  void          *loaderPrivate)
 559 {
 560    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 561    int internal_stride, stride;
 562    struct gbm_dri_bo *bo;
 563
 564    if (get_swrast_front_bo(dri2_surf) < 0)
 565       return;
 566
 567    bo = gbm_dri_bo(dri2_surf->current->bo);
 568    if (gbm_dri_bo_map_dumb(bo) == NULL)
 569       return;
 570
 571    internal_stride = bo->base.stride;
 572    stride = width * 4;
 573
 574    for (int i = 0; i < height; i++) {
 575       memcpy(data + i * stride,
 576              bo->map + (x + i) * internal_stride + y, stride);
 577    }
 578
 579    gbm_dri_bo_unmap_dumb(bo);
 580 }
 581
 582 static EGLBoolean
 583 drm_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
 584 {
 585    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 586    static const struct {
 587       int format;
 588       unsigned int red_mask;
 589       unsigned int alpha_mask;
 590    } visuals[] = {
 591       { GBM_FORMAT_XRGB2101010, 0x3ff00000, 0x00000000 },
 592       { GBM_FORMAT_ARGB2101010, 0x3ff00000, 0xc0000000 },
 593       { GBM_FORMAT_XRGB8888,    0x00ff0000, 0x00000000 },
 594       { GBM_FORMAT_ARGB8888,    0x00ff0000, 0xff000000 },
 595       { GBM_FORMAT_RGB565,      0x0000f800, 0x00000000 },
 596    };
 597
 598    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
 599    unsigned int config_count = 0;
 600
 601    for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++) {
 602       unsigned int red, alpha;
 603
 604       dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i],
 605                                       __DRI_ATTRIB_RED_MASK, &red);
 606       dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i],
 607                                       __DRI_ATTRIB_ALPHA_MASK, &alpha);
 608
 609       for (unsigned j = 0; j < ARRAY_SIZE(visuals); j++) {
 610          struct dri2_egl_config *dri2_conf;
 611
 612          if (visuals[j].red_mask != red || visuals[j].alpha_mask != alpha)
 613             continue;
 614
 615          const EGLint attr_list[] = {
 616             EGL_NATIVE_VISUAL_ID,  visuals[j].format,
 617             EGL_NONE,
 618          };
 619
 620          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
 621                config_count + 1, EGL_WINDOW_BIT, attr_list, NULL);
 622          if (dri2_conf) {
 623             if (dri2_conf->base.ConfigID == config_count + 1)
 624                config_count++;
 625             format_count[j]++;
 626          }
 627       }
 628    }
 629
 630    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
 631       if (!format_count[i]) {
 632          _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x",
 633                  visuals[i].format);
 634       }
 635    }
 636
 637    return (config_count != 0);
 638 }
 639
 640 static const struct dri2_egl_display_vtbl dri2_drm_display_vtbl = {
 641    .authenticate = dri2_drm_authenticate,
 642    .create_window_surface = dri2_drm_create_window_surface,
 643    .create_pixmap_surface = dri2_drm_create_pixmap_surface,
 644    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
 645    .destroy_surface = dri2_drm_destroy_surface,
 646    .create_image = dri2_drm_create_image_khr,
 647    .swap_interval = dri2_fallback_swap_interval,
 648    .swap_buffers = dri2_drm_swap_buffers,
 649    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
 650    .swap_buffers_region = dri2_fallback_swap_buffers_region,
 651    .set_damage_region = dri2_fallback_set_damage_region,
 652    .post_sub_buffer = dri2_fallback_post_sub_buffer,
 653    .copy_buffers = dri2_fallback_copy_buffers,
 654    .query_buffer_age = dri2_drm_query_buffer_age,
 655    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
 656    .get_sync_values = dri2_fallback_get_sync_values,
 657    .get_dri_drawable = dri2_surface_get_dri_drawable,
 658 };
 659
 660 EGLBoolean
 661 dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp)
 662 {
 663    struct dri2_egl_display *dri2_dpy;
 664    struct gbm_device *gbm;
 665    const char *err;
 666
 667    loader_set_logger(_eglLog);
 668
 669    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 670    if (!dri2_dpy)
 671       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 672
 673    dri2_dpy->fd = -1;
 674    disp->DriverData = (void *) dri2_dpy;
 675
 676    gbm = disp->PlatformDisplay;
 677    if (gbm == NULL) {
 678       char buf[64];
 679       int n = snprintf(buf, sizeof(buf), DRM_DEV_NAME, DRM_DIR_NAME, 0);
 680       if (n != -1 && n < sizeof(buf))
 681          dri2_dpy->fd = loader_open_device(buf);
 682       if (dri2_dpy->fd < 0)
 683          dri2_dpy->fd = loader_open_device("/dev/dri/card0");
 684       gbm = gbm_create_device(dri2_dpy->fd);
 685       if (gbm == NULL) {
 686          err = "DRI2: failed to create gbm device";
 687          goto cleanup;
 688       }
 689       dri2_dpy->own_device = true;
 690    } else {
 691       dri2_dpy->fd = fcntl(gbm_device_get_fd(gbm), F_DUPFD_CLOEXEC, 3);
 692       if (dri2_dpy->fd < 0) {
 693          err = "DRI2: failed to fcntl() existing gbm device";
 694          goto cleanup;
 695       }
 696    }
 697
 698    if (strcmp(gbm_device_get_backend_name(gbm), "drm") != 0) {
 699       err = "DRI2: gbm device using incorrect/incompatible backend";
 700       goto cleanup;
 701    }
 702
 703    dri2_dpy->gbm_dri = gbm_dri_device(gbm);
 704    dri2_dpy->driver_name = strdup(dri2_dpy->gbm_dri->driver_name);
 705
 706    dri2_dpy->dri_screen = dri2_dpy->gbm_dri->screen;
 707    dri2_dpy->core = dri2_dpy->gbm_dri->core;
 708    dri2_dpy->dri2 = dri2_dpy->gbm_dri->dri2;
 709    dri2_dpy->swrast = dri2_dpy->gbm_dri->swrast;
 710    dri2_dpy->driver_configs = dri2_dpy->gbm_dri->driver_configs;
 711
 712    dri2_dpy->gbm_dri->lookup_image = dri2_lookup_egl_image;
 713    dri2_dpy->gbm_dri->lookup_user_data = disp;
 714
 715    dri2_dpy->gbm_dri->get_buffers = dri2_drm_get_buffers;
 716    dri2_dpy->gbm_dri->flush_front_buffer = dri2_drm_flush_front_buffer;
 717    dri2_dpy->gbm_dri->get_buffers_with_format = dri2_drm_get_buffers_with_format;
 718    dri2_dpy->gbm_dri->image_get_buffers = dri2_drm_image_get_buffers;
 719    dri2_dpy->gbm_dri->swrast_put_image2 = swrast_put_image2;
 720    dri2_dpy->gbm_dri->swrast_get_image = swrast_get_image;
 721
 722    dri2_dpy->gbm_dri->base.surface_lock_front_buffer = lock_front_buffer;
 723    dri2_dpy->gbm_dri->base.surface_release_buffer = release_buffer;
 724    dri2_dpy->gbm_dri->base.surface_has_free_buffers = has_free_buffers;
 725
 726    if (!dri2_setup_extensions(disp)) {
 727       err = "DRI2: failed to find required DRI extensions";
 728       goto cleanup;
 729    }
 730
 731    dri2_setup_screen(disp);
 732
 733    if (!drm_add_configs_for_visuals(drv, disp)) {
 734       err = "DRI2: failed to add configs";
 735       goto cleanup;
 736    }
 737
 738    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
 739    if (dri2_dpy->dri2)
 740       disp->Extensions.EXT_buffer_age = EGL_TRUE;
 741
 742 #ifdef HAVE_WAYLAND_PLATFORM
 743    dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
 744 #endif
 745    dri2_set_WL_bind_wayland_display(drv, disp);
 746
 747    /* Fill vtbl last to prevent accidentally calling virtual function during
 748     * initialization.
 749     */
 750    dri2_dpy->vtbl = &dri2_drm_display_vtbl;
 751
 752    return EGL_TRUE;
 753
 754 cleanup:
 755    dri2_display_destroy(disp);
 756    return _eglError(EGL_NOT_INITIALIZED, err);
 757 }