src/mesa/drivers/dri/i915/intel_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <errno.h>
  29 #include <time.h>
  30 #include <unistd.h>
  31 #include "main/glheader.h"
  32 #include "main/context.h"
  33 #include "main/framebuffer.h"
  34 #include "main/renderbuffer.h"
  35 #include "main/texobj.h"
  36 #include "main/hash.h"
  37 #include "main/fbobject.h"
  38 #include "main/version.h"
  39 #include "swrast/s_renderbuffer.h"
  40
  41 #include "utils.h"
  42 #include "util/xmlpool.h"
  43
  44 static const __DRIconfigOptionsExtension i915_config_options = {
  45    .base = { __DRI_CONFIG_OPTIONS, 1 },
  46    .xml =
  47
  48 DRI_CONF_BEGIN
  49    DRI_CONF_SECTION_PERFORMANCE
  50       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  51        * DRI_CONF_BO_REUSE_ALL
  52        */
  53       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  54          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  55             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  56             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  57          DRI_CONF_DESC_END
  58       DRI_CONF_OPT_END
  59
  60       DRI_CONF_OPT_BEGIN_B(fragment_shader, "true")
  61          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  62       DRI_CONF_OPT_END
  63
  64    DRI_CONF_SECTION_END
  65    DRI_CONF_SECTION_QUALITY
  66    DRI_CONF_SECTION_END
  67    DRI_CONF_SECTION_DEBUG
  68       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  69       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  70       DRI_CONF_DISABLE_THROTTLING("false")
  71       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  72       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  73       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  74
  75       DRI_CONF_OPT_BEGIN_B(stub_occlusion_query, "false")
  76          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  77       DRI_CONF_OPT_END
  78
  79       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  80          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  81       DRI_CONF_OPT_END
  82    DRI_CONF_SECTION_END
  83 DRI_CONF_END
  84 };
  85
  86 #include "intel_batchbuffer.h"
  87 #include "intel_buffers.h"
  88 #include "intel_bufmgr.h"
  89 #include "intel_chipset.h"
  90 #include "intel_fbo.h"
  91 #include "intel_mipmap_tree.h"
  92 #include "intel_screen.h"
  93 #include "intel_tex.h"
  94 #include "intel_regions.h"
  95
  96 #include "drm-uapi/i915_drm.h"
  97
  98 /**
  99  * For debugging purposes, this returns a time in seconds.
 100  */
 101 double
 102 get_time(void)
 103 {
 104    struct timespec tp;
 105
 106    clock_gettime(CLOCK_MONOTONIC, &tp);
 107
 108    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 109 }
 110
 111 void
 112 aub_dump_bmp(struct gl_context *ctx)
 113 {
 114    struct gl_framebuffer *fb = ctx->DrawBuffer;
 115
 116    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 117       struct intel_renderbuffer *irb =
 118          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 119
 120       if (irb && irb->mt) {
 121          enum aub_dump_bmp_format format;
 122
 123          switch (irb->Base.Base.Format) {
 124          case MESA_FORMAT_B8G8R8A8_UNORM:
 125          case MESA_FORMAT_B8G8R8X8_UNORM:
 126             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 127             break;
 128          default:
 129             continue;
 130          }
 131
 132          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 133          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 134                                        irb->draw_x,
 135                                        irb->draw_y,
 136                                        irb->Base.Base.Width,
 137                                        irb->Base.Base.Height,
 138                                        format,
 139                                        irb->mt->region->pitch,
 140                                        0);
 141       }
 142    }
 143 }
 144
 145 static const __DRItexBufferExtension intelTexBufferExtension = {
 146    .base = { __DRI_TEX_BUFFER, 3 },
 147
 148    .setTexBuffer        = intelSetTexBuffer,
 149    .setTexBuffer2       = intelSetTexBuffer2,
 150    .releaseTexBuffer    = NULL,
 151 };
 152
 153 static void
 154 intelDRI2Flush(__DRIdrawable *drawable)
 155 {
 156    GET_CURRENT_CONTEXT(ctx);
 157    struct intel_context *intel = intel_context(ctx);
 158    if (intel == NULL)
 159       return;
 160
 161    INTEL_FIREVERTICES(intel);
 162
 163    intel->need_throttle = true;
 164
 165    if (intel->batch.used)
 166       intel_batchbuffer_flush(intel);
 167
 168    if (INTEL_DEBUG & DEBUG_AUB) {
 169       aub_dump_bmp(ctx);
 170    }
 171 }
 172
 173 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 174     .base = { __DRI2_FLUSH, 3 },
 175
 176     .flush              = intelDRI2Flush,
 177     .invalidate         = dri2InvalidateDrawable,
 178 };
 179
 180 static struct intel_image_format intel_image_formats[] = {
 181    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 182      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 183
 184    { __DRI_IMAGE_FOURCC_SARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 185      { { 0, 0, 0, __DRI_IMAGE_FORMAT_SARGB8, 4 } } },
 186
 187    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 188      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 189
 190    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 191      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 192        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 193        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 194
 195    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 196      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 197        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 198        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 199
 200    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 201      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 202        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 203        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 204
 205    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 206      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 207        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 208        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 209
 210    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 211      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 212        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 213        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 214
 215    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 216      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 217        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 218
 219    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 220      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 221        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 222
 223    /* For YUYV and UYVY buffers, we set up two overlapping DRI images
 224     * and treat them as planar buffers in the compositors.
 225     * Plane 0 is GR88 and samples YU or YV pairs and places Y into
 226     * the R component, while plane 1 is ARGB/ABGR and samples YUYV/UYVY
 227     * clusters and places pairs and places U into the G component and
 228     * V into A.  This lets the texture sampler interpolate the Y
 229     * components correctly when sampling from plane 0, and interpolate
 230     * U and V correctly when sampling from plane 1. */
 231    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 232      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 233        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 234    { __DRI_IMAGE_FOURCC_UYVY, __DRI_IMAGE_COMPONENTS_Y_UXVX, 2,
 235      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 236        { 0, 1, 0, __DRI_IMAGE_FORMAT_ABGR8888, 4 } } }
 237 };
 238
 239 static __DRIimage *
 240 intel_allocate_image(int dri_format, void *loaderPrivate)
 241 {
 242     __DRIimage *image;
 243
 244     image = calloc(1, sizeof *image);
 245     if (image == NULL)
 246         return NULL;
 247
 248     image->dri_format = dri_format;
 249     image->offset = 0;
 250
 251     image->format = driImageFormatToGLFormat(dri_format);
 252     if (dri_format != __DRI_IMAGE_FORMAT_NONE &&
 253         image->format == MESA_FORMAT_NONE) {
 254        free(image);
 255        return NULL;
 256     }
 257
 258     image->internal_format = _mesa_get_format_base_format(image->format);
 259     image->data = loaderPrivate;
 260
 261     return image;
 262 }
 263
 264 /**
 265  * Sets up a DRIImage structure to point to our shared image in a region
 266  */
 267 static void
 268 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 269                                    struct intel_mipmap_tree *mt, GLuint level,
 270                                    GLuint zoffset)
 271 {
 272    unsigned int draw_x, draw_y;
 273    uint32_t mask_x, mask_y;
 274
 275    intel_miptree_check_level_layer(mt, level, zoffset);
 276
 277    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y);
 278    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 279
 280    image->width = mt->level[level].width;
 281    image->height = mt->level[level].height;
 282    image->tile_x = draw_x & mask_x;
 283    image->tile_y = draw_y & mask_y;
 284
 285    image->offset = intel_region_get_aligned_offset(mt->region,
 286                                                    draw_x & ~mask_x,
 287                                                    draw_y & ~mask_y);
 288
 289    intel_region_reference(&image->region, mt->region);
 290 }
 291
 292 static void
 293 intel_setup_image_from_dimensions(__DRIimage *image)
 294 {
 295    image->width    = image->region->width;
 296    image->height   = image->region->height;
 297    image->tile_x = 0;
 298    image->tile_y = 0;
 299 }
 300
 301 static __DRIimage *
 302 intel_create_image_from_name(__DRIscreen *screen,
 303                              int width, int height, int format,
 304                              int name, int pitch, void *loaderPrivate)
 305 {
 306     struct intel_screen *intelScreen = screen->driverPrivate;
 307     __DRIimage *image;
 308     int cpp;
 309
 310     image = intel_allocate_image(format, loaderPrivate);
 311     if (image == NULL)
 312        return NULL;
 313
 314     if (image->format == MESA_FORMAT_NONE)
 315        cpp = 1;
 316     else
 317        cpp = _mesa_get_format_bytes(image->format);
 318     image->region = intel_region_alloc_for_handle(intelScreen,
 319                                                   cpp, width, height,
 320                                                   pitch * cpp, name, "image");
 321     if (image->region == NULL) {
 322        free(image);
 323        return NULL;
 324     }
 325
 326     intel_setup_image_from_dimensions(image);
 327
 328     return image;
 329 }
 330
 331 static __DRIimage *
 332 intel_create_image_from_renderbuffer(__DRIcontext *context,
 333                                      int renderbuffer, void *loaderPrivate)
 334 {
 335    __DRIimage *image;
 336    struct intel_context *intel = context->driverPrivate;
 337    struct gl_renderbuffer *rb;
 338    struct intel_renderbuffer *irb;
 339
 340    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 341    if (!rb) {
 342       _mesa_error(&intel->ctx,
 343                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 344       return NULL;
 345    }
 346
 347    irb = intel_renderbuffer(rb);
 348    image = calloc(1, sizeof *image);
 349    if (image == NULL)
 350       return NULL;
 351
 352    image->internal_format = rb->InternalFormat;
 353    image->format = rb->Format;
 354    image->offset = 0;
 355    image->data = loaderPrivate;
 356    intel_region_reference(&image->region, irb->mt->region);
 357    intel_setup_image_from_dimensions(image);
 358    image->dri_format = driGLFormatToImageFormat(image->format);
 359
 360    rb->NeedsFinishRenderTexture = true;
 361    return image;
 362 }
 363
 364 static __DRIimage *
 365 intel_create_image_from_texture(__DRIcontext *context, int target,
 366                                 unsigned texture, int zoffset,
 367                                 int level,
 368                                 unsigned *error,
 369                                 void *loaderPrivate)
 370 {
 371    __DRIimage *image;
 372    struct intel_context *intel = context->driverPrivate;
 373    struct gl_texture_object *obj;
 374    struct intel_texture_object *iobj;
 375    GLuint face = 0;
 376
 377    obj = _mesa_lookup_texture(&intel->ctx, texture);
 378    if (!obj || obj->Target != target) {
 379       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 380       return NULL;
 381    }
 382
 383    if (target == GL_TEXTURE_CUBE_MAP)
 384       face = zoffset;
 385
 386    _mesa_test_texobj_completeness(&intel->ctx, obj);
 387    iobj = intel_texture_object(obj);
 388    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 389       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 390       return NULL;
 391    }
 392
 393    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 394       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 395       return NULL;
 396    }
 397
 398    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 399       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 400       return NULL;
 401    }
 402    image = calloc(1, sizeof *image);
 403    if (image == NULL) {
 404       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 405       return NULL;
 406    }
 407
 408    image->internal_format = obj->Image[face][level]->InternalFormat;
 409    image->format = obj->Image[face][level]->TexFormat;
 410    image->data = loaderPrivate;
 411    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 412    image->dri_format = driGLFormatToImageFormat(image->format);
 413    if (image->dri_format == __DRI_IMAGE_FORMAT_NONE) {
 414       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 415       free(image);
 416       return NULL;
 417    }
 418
 419    *error = __DRI_IMAGE_ERROR_SUCCESS;
 420    return image;
 421 }
 422
 423 static void
 424 intel_destroy_image(__DRIimage *image)
 425 {
 426     intel_region_release(&image->region);
 427     free(image);
 428 }
 429
 430 static __DRIimage *
 431 intel_create_image(__DRIscreen *screen,
 432                    int width, int height, int format,
 433                    unsigned int use,
 434                    void *loaderPrivate)
 435 {
 436    __DRIimage *image;
 437    struct intel_screen *intelScreen = screen->driverPrivate;
 438    uint32_t tiling;
 439    int cpp;
 440
 441    tiling = I915_TILING_X;
 442    if (use & __DRI_IMAGE_USE_CURSOR) {
 443       if (width != 64 || height != 64)
 444          return NULL;
 445       tiling = I915_TILING_NONE;
 446    }
 447
 448    if (use & __DRI_IMAGE_USE_LINEAR)
 449       tiling = I915_TILING_NONE;
 450
 451    image = intel_allocate_image(format, loaderPrivate);
 452    if (image == NULL)
 453       return NULL;
 454
 455    cpp = _mesa_get_format_bytes(image->format);
 456    image->region =
 457       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 458    if (image->region == NULL) {
 459       free(image);
 460       return NULL;
 461    }
 462
 463    intel_setup_image_from_dimensions(image);
 464
 465    return image;
 466 }
 467
 468 static GLboolean
 469 intel_query_image(__DRIimage *image, int attrib, int *value)
 470 {
 471    switch (attrib) {
 472    case __DRI_IMAGE_ATTRIB_STRIDE:
 473       *value = image->region->pitch;
 474       return true;
 475    case __DRI_IMAGE_ATTRIB_HANDLE:
 476       *value = image->region->bo->handle;
 477       return true;
 478    case __DRI_IMAGE_ATTRIB_NAME:
 479       return intel_region_flink(image->region, (uint32_t *) value);
 480    case __DRI_IMAGE_ATTRIB_FORMAT:
 481       *value = image->dri_format;
 482       return true;
 483    case __DRI_IMAGE_ATTRIB_WIDTH:
 484       *value = image->region->width;
 485       return true;
 486    case __DRI_IMAGE_ATTRIB_HEIGHT:
 487       *value = image->region->height;
 488       return true;
 489    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 490       if (image->planar_format == NULL)
 491          return false;
 492       *value = image->planar_format->components;
 493       return true;
 494    case __DRI_IMAGE_ATTRIB_FD:
 495       return !drm_intel_bo_gem_export_to_prime(image->region->bo, value);
 496   default:
 497       return false;
 498    }
 499 }
 500
 501 static __DRIimage *
 502 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 503 {
 504    __DRIimage *image;
 505
 506    image = calloc(1, sizeof *image);
 507    if (image == NULL)
 508       return NULL;
 509
 510    intel_region_reference(&image->region, orig_image->region);
 511    if (image->region == NULL) {
 512       free(image);
 513       return NULL;
 514    }
 515
 516    image->internal_format = orig_image->internal_format;
 517    image->planar_format   = orig_image->planar_format;
 518    image->dri_format      = orig_image->dri_format;
 519    image->format          = orig_image->format;
 520    image->offset          = orig_image->offset;
 521    image->width           = orig_image->width;
 522    image->height          = orig_image->height;
 523    image->tile_x          = orig_image->tile_x;
 524    image->tile_y          = orig_image->tile_y;
 525    image->data            = loaderPrivate;
 526
 527    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 528    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 529
 530    return image;
 531 }
 532
 533 static GLboolean
 534 intel_validate_usage(__DRIimage *image, unsigned int use)
 535 {
 536    if (use & __DRI_IMAGE_USE_CURSOR) {
 537       if (image->region->width != 64 || image->region->height != 64)
 538          return GL_FALSE;
 539    }
 540
 541    return GL_TRUE;
 542 }
 543
 544 static __DRIimage *
 545 intel_create_image_from_names(__DRIscreen *screen,
 546                               int width, int height, int fourcc,
 547                               int *names, int num_names,
 548                               int *strides, int *offsets,
 549                               void *loaderPrivate)
 550 {
 551     struct intel_image_format *f = NULL;
 552     __DRIimage *image;
 553     int i, index;
 554
 555     if (screen == NULL || names == NULL || num_names != 1)
 556         return NULL;
 557
 558     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 559         if (intel_image_formats[i].fourcc == fourcc) {
 560            f = &intel_image_formats[i];
 561         }
 562     }
 563
 564     if (f == NULL)
 565         return NULL;
 566
 567     image = intel_create_image_from_name(screen, width, height,
 568                                          __DRI_IMAGE_FORMAT_NONE,
 569                                          names[0], strides[0],
 570                                          loaderPrivate);
 571
 572    if (image == NULL)
 573       return NULL;
 574
 575     image->planar_format = f;
 576     for (i = 0; i < f->nplanes; i++) {
 577         index = f->planes[i].buffer_index;
 578         image->offsets[index] = offsets[index];
 579         image->strides[index] = strides[index];
 580     }
 581
 582     return image;
 583 }
 584
 585 static __DRIimage *
 586 intel_create_image_from_fds(__DRIscreen *screen,
 587                             int width, int height, int fourcc,
 588                             int *fds, int num_fds, int *strides, int *offsets,
 589                             void *loaderPrivate)
 590 {
 591    struct intel_screen *intelScreen = screen->driverPrivate;
 592    struct intel_image_format *f = NULL;
 593    __DRIimage *image;
 594    int i, index;
 595
 596    if (fds == NULL || num_fds != 1)
 597       return NULL;
 598
 599    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 600       if (intel_image_formats[i].fourcc == fourcc) {
 601          f = &intel_image_formats[i];
 602       }
 603    }
 604
 605    if (f == NULL)
 606       return NULL;
 607
 608    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 609    if (image == NULL)
 610       return NULL;
 611
 612    image->region = intel_region_alloc_for_fd(intelScreen,
 613                                              f->planes[0].cpp, width, height, strides[0],
 614                                              height * strides[0], fds[0], "image");
 615    if (image->region == NULL) {
 616       free(image);
 617       return NULL;
 618    }
 619
 620    intel_setup_image_from_dimensions(image);
 621
 622    image->planar_format = f;
 623    for (i = 0; i < f->nplanes; i++) {
 624       index = f->planes[i].buffer_index;
 625       image->offsets[index] = offsets[index];
 626       image->strides[index] = strides[index];
 627    }
 628
 629    return image;
 630 }
 631
 632
 633 static __DRIimage *
 634 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 635 {
 636     int width, height, offset, stride, dri_format, index;
 637     struct intel_image_format *f;
 638     uint32_t mask_x, mask_y;
 639     __DRIimage *image;
 640
 641     if (parent == NULL || parent->planar_format == NULL)
 642         return NULL;
 643
 644     f = parent->planar_format;
 645
 646     if (plane >= f->nplanes)
 647         return NULL;
 648
 649     width = parent->region->width >> f->planes[plane].width_shift;
 650     height = parent->region->height >> f->planes[plane].height_shift;
 651     dri_format = f->planes[plane].dri_format;
 652     index = f->planes[plane].buffer_index;
 653     offset = parent->offsets[index];
 654     stride = parent->strides[index];
 655
 656     image = intel_allocate_image(dri_format, loaderPrivate);
 657     if (image == NULL)
 658        return NULL;
 659
 660     if (offset + height * stride > parent->region->bo->size) {
 661        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 662        free(image);
 663        return NULL;
 664     }
 665
 666     image->region = calloc(sizeof(*image->region), 1);
 667     if (image->region == NULL) {
 668        free(image);
 669        return NULL;
 670     }
 671
 672     image->region->cpp = _mesa_get_format_bytes(image->format);
 673     image->region->width = width;
 674     image->region->height = height;
 675     image->region->pitch = stride;
 676     image->region->refcount = 1;
 677     image->region->bo = parent->region->bo;
 678     drm_intel_bo_reference(image->region->bo);
 679     image->region->tiling = parent->region->tiling;
 680     image->offset = offset;
 681     intel_setup_image_from_dimensions(image);
 682
 683     intel_region_get_tile_masks(image->region, &mask_x, &mask_y);
 684     if (offset & mask_x)
 685        _mesa_warning(NULL,
 686                      "intel_create_sub_image: offset not on tile boundary");
 687
 688     return image;
 689 }
 690
 691 static const __DRIimageExtension intelImageExtension = {
 692     .base = { __DRI_IMAGE, 7 },
 693
 694     .createImageFromName                = intel_create_image_from_name,
 695     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 696     .destroyImage                       = intel_destroy_image,
 697     .createImage                        = intel_create_image,
 698     .queryImage                         = intel_query_image,
 699     .dupImage                           = intel_dup_image,
 700     .validateUsage                      = intel_validate_usage,
 701     .createImageFromNames               = intel_create_image_from_names,
 702     .fromPlanar                         = intel_from_planar,
 703     .createImageFromTexture             = intel_create_image_from_texture,
 704     .createImageFromFds                 = intel_create_image_from_fds
 705 };
 706
 707 static int
 708 i915_query_renderer_integer(__DRIscreen *psp, int param, unsigned int *value)
 709 {
 710    const struct intel_screen *const intelScreen =
 711       (struct intel_screen *) psp->driverPrivate;
 712
 713    switch (param) {
 714    case __DRI2_RENDERER_VENDOR_ID:
 715       value[0] = 0x8086;
 716       return 0;
 717    case __DRI2_RENDERER_DEVICE_ID:
 718       value[0] = intelScreen->deviceID;
 719       return 0;
 720    case __DRI2_RENDERER_ACCELERATED:
 721       value[0] = 1;
 722       return 0;
 723    case __DRI2_RENDERER_VIDEO_MEMORY: {
 724       /* Once a batch uses more than 75% of the maximum mappable size, we
 725        * assume that there's some fragmentation, and we start doing extra
 726        * flushing, etc.  That's the big cliff apps will care about.
 727        */
 728       size_t aper_size;
 729       size_t mappable_size;
 730
 731       drm_intel_get_aperture_sizes(psp->fd, &mappable_size, &aper_size);
 732
 733       const unsigned gpu_mappable_megabytes =
 734          (aper_size / (1024 * 1024)) * 3 / 4;
 735
 736       const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
 737       const long system_page_size = sysconf(_SC_PAGE_SIZE);
 738
 739       if (system_memory_pages <= 0 || system_page_size <= 0)
 740          return -1;
 741
 742       const uint64_t system_memory_bytes = (uint64_t) system_memory_pages
 743          * (uint64_t) system_page_size;
 744
 745       const unsigned system_memory_megabytes =
 746          (unsigned) (system_memory_bytes / (1024 * 1024));
 747
 748       value[0] = MIN2(system_memory_megabytes, gpu_mappable_megabytes);
 749       return 0;
 750    }
 751    case __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE:
 752       value[0] = 1;
 753       return 0;
 754    case __DRI2_RENDERER_HAS_TEXTURE_3D:
 755       value[0] = 1;
 756       return 0;
 757    default:
 758       return driQueryRendererIntegerCommon(psp, param, value);
 759    }
 760
 761    return -1;
 762 }
 763
 764 static int
 765 i915_query_renderer_string(__DRIscreen *psp, int param, const char **value)
 766 {
 767    const struct intel_screen *intelScreen =
 768       (struct intel_screen *) psp->driverPrivate;
 769
 770    switch (param) {
 771    case __DRI2_RENDERER_VENDOR_ID:
 772       value[0] = i915_vendor_string;
 773       return 0;
 774    case __DRI2_RENDERER_DEVICE_ID:
 775       value[0] = i915_get_renderer_string(intelScreen->deviceID);
 776       return 0;
 777    default:
 778       break;
 779    }
 780
 781    return -1;
 782 }
 783
 784 static const __DRI2rendererQueryExtension intelRendererQueryExtension = {
 785    .base = { __DRI2_RENDERER_QUERY, 1 },
 786
 787    .queryInteger = i915_query_renderer_integer,
 788    .queryString = i915_query_renderer_string
 789 };
 790
 791 static const __DRIextension *intelScreenExtensions[] = {
 792     &intelTexBufferExtension.base,
 793     &intelFenceExtension.base,
 794     &intelFlushExtension.base,
 795     &intelImageExtension.base,
 796     &intelRendererQueryExtension.base,
 797     &dri2ConfigQueryExtension.base,
 798     &dri2NoErrorExtension.base,
 799     NULL
 800 };
 801
 802 static bool
 803 intel_get_param(__DRIscreen *psp, int param, int *value)
 804 {
 805    int ret;
 806    struct drm_i915_getparam gp;
 807
 808    memset(&gp, 0, sizeof(gp));
 809    gp.param = param;
 810    gp.value = value;
 811
 812    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 813    if (ret) {
 814       if (ret != -EINVAL)
 815          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 816       return false;
 817    }
 818
 819    return true;
 820 }
 821
 822 static bool
 823 intel_get_boolean(__DRIscreen *psp, int param)
 824 {
 825    int value = 0;
 826    return intel_get_param(psp, param, &value) && value;
 827 }
 828
 829 static void
 830 intelDestroyScreen(__DRIscreen * sPriv)
 831 {
 832    struct intel_screen *intelScreen = sPriv->driverPrivate;
 833
 834    dri_bufmgr_destroy(intelScreen->bufmgr);
 835    driDestroyOptionInfo(&intelScreen->optionCache);
 836
 837    free(intelScreen);
 838    sPriv->driverPrivate = NULL;
 839 }
 840
 841
 842 /**
 843  * This is called when we need to set up GL rendering to a new X window.
 844  */
 845 static GLboolean
 846 intelCreateBuffer(__DRIscreen * driScrnPriv,
 847                   __DRIdrawable * driDrawPriv,
 848                   const struct gl_config * mesaVis, GLboolean isPixmap)
 849 {
 850    struct intel_renderbuffer *rb;
 851    mesa_format rgbFormat;
 852    struct gl_framebuffer *fb;
 853
 854    if (isPixmap)
 855       return false;
 856
 857    fb = CALLOC_STRUCT(gl_framebuffer);
 858    if (!fb)
 859       return false;
 860
 861    _mesa_initialize_window_framebuffer(fb, mesaVis);
 862
 863    if (mesaVis->redBits == 5)
 864       rgbFormat = MESA_FORMAT_B5G6R5_UNORM;
 865    else if (mesaVis->sRGBCapable)
 866       rgbFormat = MESA_FORMAT_B8G8R8A8_SRGB;
 867    else if (mesaVis->alphaBits == 0)
 868       rgbFormat = MESA_FORMAT_B8G8R8X8_UNORM;
 869    else
 870       rgbFormat = MESA_FORMAT_B8G8R8A8_UNORM;
 871
 872    /* setup the hardware-based renderbuffers */
 873    rb = intel_create_renderbuffer(rgbFormat);
 874    _mesa_attach_and_own_rb(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 875
 876    if (mesaVis->doubleBufferMode) {
 877       rb = intel_create_renderbuffer(rgbFormat);
 878       _mesa_attach_and_own_rb(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 879    }
 880
 881    /*
 882     * Assert here that the gl_config has an expected depth/stencil bit
 883     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 884     * which constructs the advertised configs.)
 885     */
 886    if (mesaVis->depthBits == 24) {
 887       assert(mesaVis->stencilBits == 8);
 888
 889       /*
 890        * Use combined depth/stencil. Note that the renderbuffer is
 891        * attached to two attachment points.
 892        */
 893       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z24_UNORM_S8_UINT);
 894       _mesa_attach_and_own_rb(fb, BUFFER_DEPTH, &rb->Base.Base);
 895       _mesa_attach_and_reference_rb(fb, BUFFER_STENCIL, &rb->Base.Base);
 896    }
 897    else if (mesaVis->depthBits == 16) {
 898       assert(mesaVis->stencilBits == 0);
 899       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z_UNORM16);
 900       _mesa_attach_and_own_rb(fb, BUFFER_DEPTH, &rb->Base.Base);
 901    }
 902    else {
 903       assert(mesaVis->depthBits == 0);
 904       assert(mesaVis->stencilBits == 0);
 905    }
 906
 907    /* now add any/all software-based renderbuffers we may need */
 908    _swrast_add_soft_renderbuffers(fb,
 909                                   false, /* never sw color */
 910                                   false, /* never sw depth */
 911                                   false, /* never sw stencil */
 912                                   mesaVis->accumRedBits > 0,
 913                                   false, /* never sw alpha */
 914                                   false  /* never sw aux */ );
 915    driDrawPriv->driverPrivate = fb;
 916
 917    return true;
 918 }
 919
 920 static void
 921 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 922 {
 923     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 924
 925     _mesa_reference_framebuffer(&fb, NULL);
 926 }
 927
 928 /* There are probably better ways to do this, such as an
 929  * init-designated function to register chipids and createcontext
 930  * functions.
 931  */
 932 extern bool
 933 i830CreateContext(int api,
 934                   const struct gl_config *mesaVis,
 935                   __DRIcontext *driContextPriv,
 936                   unsigned major_version,
 937                   unsigned minor_version,
 938                   uint32_t flags,
 939                   unsigned *error,
 940                   void *sharedContextPrivate);
 941
 942 extern bool
 943 i915CreateContext(int api,
 944                   const struct gl_config *mesaVis,
 945                   __DRIcontext *driContextPriv,
 946                   unsigned major_version,
 947                   unsigned minor_version,
 948                   uint32_t flags,
 949                   unsigned *error,
 950                   void *sharedContextPrivate);
 951
 952 static GLboolean
 953 intelCreateContext(gl_api api,
 954                    const struct gl_config * mesaVis,
 955                    __DRIcontext * driContextPriv,
 956                    const struct __DriverContextConfig *ctx_config,
 957                    unsigned *error,
 958                    void *sharedContextPrivate)
 959 {
 960    bool success = false;
 961
 962    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 963    struct intel_screen *intelScreen = sPriv->driverPrivate;
 964
 965    if (ctx_config->flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_NO_ERROR)) {
 966       *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
 967       return false;
 968    }
 969
 970    if (ctx_config->attribute_mask) {
 971       *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
 972       return false;
 973    }
 974
 975    if (IS_GEN3(intelScreen->deviceID)) {
 976       success = i915CreateContext(api, mesaVis, driContextPriv,
 977                                   ctx_config->major_version,
 978                                   ctx_config->minor_version,
 979                                   ctx_config->flags,
 980                                   error, sharedContextPrivate);
 981    } else {
 982       intelScreen->no_vbo = true;
 983       success = i830CreateContext(api, mesaVis, driContextPriv,
 984                                   ctx_config->major_version,
 985                                   ctx_config->minor_version,
 986                                   ctx_config->flags,
 987                                   error, sharedContextPrivate);
 988    }
 989
 990    if (success)
 991       return true;
 992
 993    if (driContextPriv->driverPrivate != NULL)
 994       intelDestroyContext(driContextPriv);
 995
 996    return false;
 997 }
 998
 999 static bool
1000 intel_init_bufmgr(struct intel_screen *intelScreen)
1001 {
1002    __DRIscreen *spriv = intelScreen->driScrnPriv;
1003
1004    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
1005
1006    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
1007    if (intelScreen->bufmgr == NULL) {
1008       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
1009               __func__, __LINE__);
1010       return false;
1011    }
1012
1013    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
1014
1015    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
1016       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
1017       return false;
1018    }
1019
1020    return true;
1021 }
1022
1023 static __DRIconfig**
1024 intel_screen_make_configs(__DRIscreen *dri_screen)
1025 {
1026    static const mesa_format formats[] = {
1027       MESA_FORMAT_B5G6R5_UNORM,
1028       MESA_FORMAT_B8G8R8A8_UNORM,
1029       MESA_FORMAT_B8G8R8X8_UNORM
1030    };
1031
1032    /* __DRI_ATTRIB_SWAP_COPY is not supported due to page flipping. */
1033    static const GLenum back_buffer_modes[] = {
1034       __DRI_ATTRIB_SWAP_UNDEFINED, __DRI_ATTRIB_SWAP_NONE
1035    };
1036
1037    static const uint8_t singlesample_samples[1] = {0};
1038
1039    uint8_t depth_bits[4], stencil_bits[4];
1040    __DRIconfig **configs = NULL;
1041
1042    /* Generate singlesample configs without accumulation buffer. */
1043    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1044       __DRIconfig **new_configs;
1045       int num_depth_stencil_bits = 2;
1046
1047       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1048        * buffer that has a different number of bits per pixel than the color
1049        * buffer.
1050        */
1051       depth_bits[0] = 0;
1052       stencil_bits[0] = 0;
1053
1054       if (formats[i] == MESA_FORMAT_B5G6R5_UNORM) {
1055          depth_bits[1] = 16;
1056          stencil_bits[1] = 0;
1057       } else {
1058          depth_bits[1] = 24;
1059          stencil_bits[1] = 8;
1060       }
1061
1062       new_configs = driCreateConfigs(formats[i],
1063                                      depth_bits,
1064                                      stencil_bits,
1065                                      num_depth_stencil_bits,
1066                                      back_buffer_modes, 2,
1067                                      singlesample_samples, 1,
1068                                      false, false, false);
1069       configs = driConcatConfigs(configs, new_configs);
1070    }
1071
1072    /* Generate the minimum possible set of configs that include an
1073     * accumulation buffer.
1074     */
1075    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1076       __DRIconfig **new_configs;
1077
1078       if (formats[i] == MESA_FORMAT_B5G6R5_UNORM) {
1079          depth_bits[0] = 16;
1080          stencil_bits[0] = 0;
1081       } else {
1082          depth_bits[0] = 24;
1083          stencil_bits[0] = 8;
1084       }
1085
1086       new_configs = driCreateConfigs(formats[i],
1087                                      depth_bits, stencil_bits, 1,
1088                                      back_buffer_modes, 1,
1089                                      singlesample_samples, 1,
1090                                      true, false, false);
1091       configs = driConcatConfigs(configs, new_configs);
1092    }
1093
1094    if (configs == NULL) {
1095       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1096               __LINE__);
1097       return NULL;
1098    }
1099
1100    return configs;
1101 }
1102
1103 static void
1104 set_max_gl_versions(struct intel_screen *screen)
1105 {
1106    __DRIscreen *psp = screen->driScrnPriv;
1107
1108    switch (screen->gen) {
1109    case 3: {
1110       bool has_fragment_shader = driQueryOptionb(&screen->optionCache, "fragment_shader");
1111       bool has_occlusion_query = driQueryOptionb(&screen->optionCache, "stub_occlusion_query");
1112
1113       psp->max_gl_core_version = 0;
1114       psp->max_gl_es1_version = 11;
1115       psp->max_gl_es2_version = 20;
1116
1117       if (has_fragment_shader && has_occlusion_query) {
1118          psp->max_gl_compat_version = 21;
1119       } else {
1120          psp->max_gl_compat_version = 14;
1121       }
1122       break;
1123    }
1124    case 2:
1125       psp->max_gl_core_version = 0;
1126       psp->max_gl_compat_version = 13;
1127       psp->max_gl_es1_version = 11;
1128       psp->max_gl_es2_version = 0;
1129       break;
1130    default:
1131       assert(!"unrecognized intel_screen::gen");
1132       break;
1133    }
1134 }
1135
1136 /**
1137  * This is the driver specific part of the createNewScreen entry point.
1138  * Called when using DRI2.
1139  *
1140  * \return the struct gl_config supported by this driver
1141  */
1142 static const
1143 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1144 {
1145    struct intel_screen *intelScreen;
1146
1147    if (psp->image.loader) {
1148    } else if (psp->dri2.loader->base.version <= 2 ||
1149        psp->dri2.loader->getBuffersWithFormat == NULL) {
1150       fprintf(stderr,
1151               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1152               "support required\n");
1153       return false;
1154    }
1155
1156    /* Allocate the private area */
1157    intelScreen = calloc(1, sizeof *intelScreen);
1158    if (!intelScreen) {
1159       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1160       return false;
1161    }
1162    /* parse information in __driConfigOptions */
1163    driParseOptionInfo(&intelScreen->optionCache, i915_config_options.xml);
1164
1165    intelScreen->driScrnPriv = psp;
1166    psp->driverPrivate = (void *) intelScreen;
1167
1168    if (!intel_init_bufmgr(intelScreen))
1169        return false;
1170
1171    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1172
1173    if (IS_GEN3(intelScreen->deviceID)) {
1174       intelScreen->gen = 3;
1175    } else {
1176       intelScreen->gen = 2;
1177    }
1178
1179    set_max_gl_versions(intelScreen);
1180
1181    psp->extensions = intelScreenExtensions;
1182
1183    return (const __DRIconfig**) intel_screen_make_configs(psp);
1184 }
1185
1186 struct intel_buffer {
1187    __DRIbuffer base;
1188    struct intel_region *region;
1189 };
1190
1191 static __DRIbuffer *
1192 intelAllocateBuffer(__DRIscreen *screen,
1193                     unsigned attachment, unsigned format,
1194                     int width, int height)
1195 {
1196    struct intel_buffer *intelBuffer;
1197    struct intel_screen *intelScreen = screen->driverPrivate;
1198
1199    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1200           attachment == __DRI_BUFFER_BACK_LEFT);
1201
1202    intelBuffer = calloc(1, sizeof *intelBuffer);
1203    if (intelBuffer == NULL)
1204       return NULL;
1205
1206    /* The front and back buffers are color buffers, which are X tiled. */
1207    intelBuffer->region = intel_region_alloc(intelScreen,
1208                                             I915_TILING_X,
1209                                             format / 8,
1210                                             width,
1211                                             height,
1212                                             true);
1213
1214    if (intelBuffer->region == NULL) {
1215            free(intelBuffer);
1216            return NULL;
1217    }
1218
1219    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1220
1221    intelBuffer->base.attachment = attachment;
1222    intelBuffer->base.cpp = intelBuffer->region->cpp;
1223    intelBuffer->base.pitch = intelBuffer->region->pitch;
1224
1225    return &intelBuffer->base;
1226 }
1227
1228 static void
1229 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1230 {
1231    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1232
1233    intel_region_release(&intelBuffer->region);
1234    free(intelBuffer);
1235 }
1236
1237
1238 static const struct __DriverAPIRec i915_driver_api = {
1239    .InitScreen           = intelInitScreen2,
1240    .DestroyScreen        = intelDestroyScreen,
1241    .CreateContext        = intelCreateContext,
1242    .DestroyContext       = intelDestroyContext,
1243    .CreateBuffer         = intelCreateBuffer,
1244    .DestroyBuffer        = intelDestroyBuffer,
1245    .MakeCurrent          = intelMakeCurrent,
1246    .UnbindContext        = intelUnbindContext,
1247    .AllocateBuffer       = intelAllocateBuffer,
1248    .ReleaseBuffer        = intelReleaseBuffer
1249 };
1250
1251 static const struct __DRIDriverVtableExtensionRec i915_vtable = {
1252    .base = { __DRI_DRIVER_VTABLE, 1 },
1253    .vtable = &i915_driver_api,
1254 };
1255
1256 /* This is the table of extensions that the loader will dlsym() for. */
1257 static const __DRIextension *i915_driver_extensions[] = {
1258     &driCoreExtension.base,
1259     &driImageDriverExtension.base,
1260     &driDRI2Extension.base,
1261     &i915_vtable.base,
1262     &i915_config_options.base,
1263     NULL
1264 };
1265
1266 PUBLIC const __DRIextension **__driDriverGetExtensions_i915(void)
1267 {
1268    globalDriverAPI = &i915_driver_api;
1269
1270    return i915_driver_extensions;
1271 }