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    dri2_surf->buffer_count = 0;
 327    for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
 328       assert(attachments[i] < __DRI_BUFFER_COUNT);
 329       assert(dri2_surf->buffer_count < 5);
 330
 331       switch (attachments[i]) {
 332       case __DRI_BUFFER_BACK_LEFT:
 333          if (get_back_bo(dri2_surf) < 0) {
 334             _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
 335             return NULL;
 336          }
 337          back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
 338          break;
 339       default:
 340          if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
 341                         &dri2_surf->buffers[j]) < 0) {
 342             _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
 343             return NULL;
 344          }
 345          break;
 346       }
 347    }
 348
 349    *out_count = j;
 350    if (j == 0)
 351       return NULL;
 352
 353    *width = dri2_surf->base.Width;
 354    *height = dri2_surf->base.Height;
 355
 356    return dri2_surf->buffers;
 357 }
 358
 359 static __DRIbuffer *
 360 dri2_drm_get_buffers(__DRIdrawable * driDrawable,
 361                      int *width, int *height,
 362                      unsigned int *attachments, int count,
 363                      int *out_count, void *loaderPrivate)
 364 {
 365    unsigned int *attachments_with_format;
 366    __DRIbuffer *buffer;
 367    const unsigned int format = 32;
 368
 369    attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
 370    if (!attachments_with_format) {
 371       *out_count = 0;
 372       return NULL;
 373    }
 374
 375    for (int i = 0; i < count; ++i) {
 376       attachments_with_format[2*i] = attachments[i];
 377       attachments_with_format[2*i + 1] = format;
 378    }
 379
 380    buffer =
 381       dri2_drm_get_buffers_with_format(driDrawable,
 382                                        width, height,
 383                                        attachments_with_format, count,
 384                                        out_count, loaderPrivate);
 385
 386    free(attachments_with_format);
 387
 388    return buffer;
 389 }
 390
 391 static int
 392 dri2_drm_image_get_buffers(__DRIdrawable *driDrawable,
 393                            unsigned int format,
 394                            uint32_t *stamp,
 395                            void *loaderPrivate,
 396                            uint32_t buffer_mask,
 397                            struct __DRIimageList *buffers)
 398 {
 399    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 400    struct gbm_dri_bo *bo;
 401
 402    if (get_back_bo(dri2_surf) < 0)
 403       return 0;
 404
 405    bo = (struct gbm_dri_bo *) dri2_surf->back->bo;
 406    buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
 407    buffers->back = bo->image;
 408
 409    return 1;
 410 }
 411
 412 static void
 413 dri2_drm_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
 414 {
 415    (void) driDrawable;
 416    (void) loaderPrivate;
 417 }
 418
 419 static EGLBoolean
 420 dri2_drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
 421 {
 422    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 423    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 424
 425    if (!dri2_dpy->flush) {
 426       dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
 427       return EGL_TRUE;
 428    }
 429
 430    if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
 431       if (dri2_surf->current)
 432          _eglError(EGL_BAD_SURFACE, "dri2_swap_buffers");
 433       for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
 434          if (dri2_surf->color_buffers[i].age > 0)
 435             dri2_surf->color_buffers[i].age++;
 436
 437       /* Make sure we have a back buffer in case we're swapping without
 438        * ever rendering. */
 439       if (get_back_bo(dri2_surf) < 0)
 440          return _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
 441
 442       dri2_surf->current = dri2_surf->back;
 443       dri2_surf->current->age = 1;
 444       dri2_surf->back = NULL;
 445    }
 446
 447    dri2_flush_drawable_for_swapbuffers(disp, draw);
 448    dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
 449
 450    return EGL_TRUE;
 451 }
 452
 453 static EGLint
 454 dri2_drm_query_buffer_age(_EGLDriver *drv,
 455                           _EGLDisplay *disp, _EGLSurface *surface)
 456 {
 457    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
 458
 459    if (get_back_bo(dri2_surf) < 0) {
 460       _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
 461       return -1;
 462    }
 463
 464    return dri2_surf->back->age;
 465 }
 466
 467 static _EGLImage *
 468 dri2_drm_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 469                                  EGLClientBuffer buffer, const EGLint *attr_list)
 470 {
 471    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 472    struct gbm_dri_bo *dri_bo = gbm_dri_bo((struct gbm_bo *) buffer);
 473    struct dri2_egl_image *dri2_img;
 474
 475    dri2_img = malloc(sizeof *dri2_img);
 476    if (!dri2_img) {
 477       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
 478       return NULL;
 479    }
 480
 481    _eglInitImage(&dri2_img->base, disp);
 482
 483    dri2_img->dri_image = dri2_dpy->image->dupImage(dri_bo->image, dri2_img);
 484    if (dri2_img->dri_image == NULL) {
 485       free(dri2_img);
 486       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
 487       return NULL;
 488    }
 489
 490    return &dri2_img->base;
 491 }
 492
 493 static _EGLImage *
 494 dri2_drm_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
 495                           _EGLContext *ctx, EGLenum target,
 496                           EGLClientBuffer buffer, const EGLint *attr_list)
 497 {
 498    (void) drv;
 499
 500    switch (target) {
 501    case EGL_NATIVE_PIXMAP_KHR:
 502       return dri2_drm_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
 503    default:
 504       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
 505    }
 506 }
 507
 508 static int
 509 dri2_drm_authenticate(_EGLDisplay *disp, uint32_t id)
 510 {
 511    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 512
 513    return drmAuthMagic(dri2_dpy->fd, id);
 514 }
 515
 516 static void
 517 swrast_put_image2(__DRIdrawable *driDrawable,
 518                   int            op,
 519                   int            x,
 520                   int            y,
 521                   int            width,
 522                   int            height,
 523                   int            stride,
 524                   char          *data,
 525                   void          *loaderPrivate)
 526 {
 527    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 528    int internal_stride;
 529    struct gbm_dri_bo *bo;
 530
 531    if (op != __DRI_SWRAST_IMAGE_OP_DRAW &&
 532        op != __DRI_SWRAST_IMAGE_OP_SWAP)
 533       return;
 534
 535    if (get_swrast_front_bo(dri2_surf) < 0)
 536       return;
 537
 538    bo = gbm_dri_bo(dri2_surf->current->bo);
 539    if (gbm_dri_bo_map_dumb(bo) == NULL)
 540       return;
 541
 542    internal_stride = bo->base.stride;
 543
 544    for (int i = 0; i < height; i++) {
 545       memcpy(bo->map + (x + i) * internal_stride + y,
 546              data + i * stride, stride);
 547    }
 548
 549    gbm_dri_bo_unmap_dumb(bo);
 550 }
 551
 552 static void
 553 swrast_get_image(__DRIdrawable *driDrawable,
 554                  int            x,
 555                  int            y,
 556                  int            width,
 557                  int            height,
 558                  char          *data,
 559                  void          *loaderPrivate)
 560 {
 561    struct dri2_egl_surface *dri2_surf = loaderPrivate;
 562    int internal_stride, stride;
 563    struct gbm_dri_bo *bo;
 564
 565    if (get_swrast_front_bo(dri2_surf) < 0)
 566       return;
 567
 568    bo = gbm_dri_bo(dri2_surf->current->bo);
 569    if (gbm_dri_bo_map_dumb(bo) == NULL)
 570       return;
 571
 572    internal_stride = bo->base.stride;
 573    stride = width * 4;
 574
 575    for (int i = 0; i < height; i++) {
 576       memcpy(data + i * stride,
 577              bo->map + (x + i) * internal_stride + y, stride);
 578    }
 579
 580    gbm_dri_bo_unmap_dumb(bo);
 581 }
 582
 583 static EGLBoolean
 584 drm_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
 585 {
 586    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 587    static const struct {
 588       int format;
 589       unsigned int red_mask;
 590       unsigned int alpha_mask;
 591    } visuals[] = {
 592       { GBM_FORMAT_XRGB2101010, 0x3ff00000, 0x00000000 },
 593       { GBM_FORMAT_ARGB2101010, 0x3ff00000, 0xc0000000 },
 594       { GBM_FORMAT_XRGB8888,    0x00ff0000, 0x00000000 },
 595       { GBM_FORMAT_ARGB8888,    0x00ff0000, 0xff000000 },
 596       { GBM_FORMAT_RGB565,      0x0000f800, 0x00000000 },
 597    };
 598
 599    unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
 600    unsigned int config_count = 0;
 601
 602    for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++) {
 603       unsigned int red, alpha;
 604
 605       dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i],
 606                                       __DRI_ATTRIB_RED_MASK, &red);
 607       dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i],
 608                                       __DRI_ATTRIB_ALPHA_MASK, &alpha);
 609
 610       for (unsigned j = 0; j < ARRAY_SIZE(visuals); j++) {
 611          struct dri2_egl_config *dri2_conf;
 612
 613          if (visuals[j].red_mask != red || visuals[j].alpha_mask != alpha)
 614             continue;
 615
 616          const EGLint attr_list[] = {
 617             EGL_NATIVE_VISUAL_ID,  visuals[j].format,
 618             EGL_NONE,
 619          };
 620
 621          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
 622                config_count + 1, EGL_WINDOW_BIT, attr_list, NULL);
 623          if (dri2_conf) {
 624             if (dri2_conf->base.ConfigID == config_count + 1)
 625                config_count++;
 626             format_count[j]++;
 627          }
 628       }
 629    }
 630
 631    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
 632       if (!format_count[i]) {
 633          _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x",
 634                  visuals[i].format);
 635       }
 636    }
 637
 638    return (config_count != 0);
 639 }
 640
 641 static const struct dri2_egl_display_vtbl dri2_drm_display_vtbl = {
 642    .authenticate = dri2_drm_authenticate,
 643    .create_window_surface = dri2_drm_create_window_surface,
 644    .create_pixmap_surface = dri2_drm_create_pixmap_surface,
 645    .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
 646    .destroy_surface = dri2_drm_destroy_surface,
 647    .create_image = dri2_drm_create_image_khr,
 648    .swap_interval = dri2_fallback_swap_interval,
 649    .swap_buffers = dri2_drm_swap_buffers,
 650    .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
 651    .swap_buffers_region = dri2_fallback_swap_buffers_region,
 652    .set_damage_region = dri2_fallback_set_damage_region,
 653    .post_sub_buffer = dri2_fallback_post_sub_buffer,
 654    .copy_buffers = dri2_fallback_copy_buffers,
 655    .query_buffer_age = dri2_drm_query_buffer_age,
 656    .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
 657    .get_sync_values = dri2_fallback_get_sync_values,
 658    .get_dri_drawable = dri2_surface_get_dri_drawable,
 659 };
 660
 661 EGLBoolean
 662 dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp)
 663 {
 664    struct dri2_egl_display *dri2_dpy;
 665    struct gbm_device *gbm;
 666    const char *err;
 667
 668    loader_set_logger(_eglLog);
 669
 670    dri2_dpy = calloc(1, sizeof *dri2_dpy);
 671    if (!dri2_dpy)
 672       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
 673
 674    dri2_dpy->fd = -1;
 675    disp->DriverData = (void *) dri2_dpy;
 676
 677    gbm = disp->PlatformDisplay;
 678    if (gbm == NULL) {
 679       char buf[64];
 680       int n = snprintf(buf, sizeof(buf), DRM_DEV_NAME, DRM_DIR_NAME, 0);
 681       if (n != -1 && n < sizeof(buf))
 682          dri2_dpy->fd = loader_open_device(buf);
 683       if (dri2_dpy->fd < 0)
 684          dri2_dpy->fd = loader_open_device("/dev/dri/card0");
 685       gbm = gbm_create_device(dri2_dpy->fd);
 686       if (gbm == NULL) {
 687          err = "DRI2: failed to create gbm device";
 688          goto cleanup;
 689       }
 690       dri2_dpy->own_device = true;
 691    } else {
 692       dri2_dpy->fd = fcntl(gbm_device_get_fd(gbm), F_DUPFD_CLOEXEC, 3);
 693       if (dri2_dpy->fd < 0) {
 694          err = "DRI2: failed to fcntl() existing gbm device";
 695          goto cleanup;
 696       }
 697    }
 698
 699    if (strcmp(gbm_device_get_backend_name(gbm), "drm") != 0) {
 700       err = "DRI2: gbm device using incorrect/incompatible backend";
 701       goto cleanup;
 702    }
 703
 704    dri2_dpy->gbm_dri = gbm_dri_device(gbm);
 705    dri2_dpy->driver_name = strdup(dri2_dpy->gbm_dri->driver_name);
 706
 707    dri2_dpy->dri_screen = dri2_dpy->gbm_dri->screen;
 708    dri2_dpy->core = dri2_dpy->gbm_dri->core;
 709    dri2_dpy->dri2 = dri2_dpy->gbm_dri->dri2;
 710    dri2_dpy->swrast = dri2_dpy->gbm_dri->swrast;
 711    dri2_dpy->driver_configs = dri2_dpy->gbm_dri->driver_configs;
 712
 713    dri2_dpy->gbm_dri->lookup_image = dri2_lookup_egl_image;
 714    dri2_dpy->gbm_dri->lookup_user_data = disp;
 715
 716    dri2_dpy->gbm_dri->get_buffers = dri2_drm_get_buffers;
 717    dri2_dpy->gbm_dri->flush_front_buffer = dri2_drm_flush_front_buffer;
 718    dri2_dpy->gbm_dri->get_buffers_with_format = dri2_drm_get_buffers_with_format;
 719    dri2_dpy->gbm_dri->image_get_buffers = dri2_drm_image_get_buffers;
 720    dri2_dpy->gbm_dri->swrast_put_image2 = swrast_put_image2;
 721    dri2_dpy->gbm_dri->swrast_get_image = swrast_get_image;
 722
 723    dri2_dpy->gbm_dri->base.surface_lock_front_buffer = lock_front_buffer;
 724    dri2_dpy->gbm_dri->base.surface_release_buffer = release_buffer;
 725    dri2_dpy->gbm_dri->base.surface_has_free_buffers = has_free_buffers;
 726
 727    if (!dri2_setup_extensions(disp)) {
 728       err = "DRI2: failed to find required DRI extensions";
 729       goto cleanup;
 730    }
 731
 732    dri2_setup_screen(disp);
 733
 734    if (!drm_add_configs_for_visuals(drv, disp)) {
 735       err = "DRI2: failed to add configs";
 736       goto cleanup;
 737    }
 738
 739    disp->Extensions.KHR_image_pixmap = EGL_TRUE;
 740    if (dri2_dpy->dri2)
 741       disp->Extensions.EXT_buffer_age = EGL_TRUE;
 742
 743 #ifdef HAVE_WAYLAND_PLATFORM
 744    dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
 745 #endif
 746    dri2_set_WL_bind_wayland_display(drv, disp);
 747
 748    /* Fill vtbl last to prevent accidentally calling virtual function during
 749     * initialization.
 750     */
 751    dri2_dpy->vtbl = &dri2_drm_display_vtbl;
 752
 753    return EGL_TRUE;
 754
 755 cleanup:
 756    dri2_display_destroy(disp);
 757    return _eglError(EGL_NOT_INITIALIZED, err);
 758 }