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 "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       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  51       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  52        * DRI_CONF_BO_REUSE_ALL
  53        */
  54       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  55          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  56             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  57             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  58          DRI_CONF_DESC_END
  59       DRI_CONF_OPT_END
  60
  61       DRI_CONF_OPT_BEGIN_B(early_z, "false")
  62          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  63       DRI_CONF_OPT_END
  64
  65       DRI_CONF_OPT_BEGIN_B(fragment_shader, "true")
  66          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  67       DRI_CONF_OPT_END
  68
  69    DRI_CONF_SECTION_END
  70    DRI_CONF_SECTION_QUALITY
  71       DRI_CONF_FORCE_S3TC_ENABLE("false")
  72    DRI_CONF_SECTION_END
  73    DRI_CONF_SECTION_DEBUG
  74       DRI_CONF_NO_RAST("false")
  75       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  76       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  77       DRI_CONF_DISABLE_THROTTLING("false")
  78       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  79       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  80       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  81
  82       DRI_CONF_OPT_BEGIN_B(stub_occlusion_query, "false")
  83          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  84       DRI_CONF_OPT_END
  85
  86       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  87          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  88       DRI_CONF_OPT_END
  89    DRI_CONF_SECTION_END
  90 DRI_CONF_END
  91 };
  92
  93 #include "intel_batchbuffer.h"
  94 #include "intel_buffers.h"
  95 #include "intel_bufmgr.h"
  96 #include "intel_chipset.h"
  97 #include "intel_fbo.h"
  98 #include "intel_mipmap_tree.h"
  99 #include "intel_screen.h"
 100 #include "intel_tex.h"
 101 #include "intel_regions.h"
 102
 103 #include "i915_drm.h"
 104
 105 /**
 106  * For debugging purposes, this returns a time in seconds.
 107  */
 108 double
 109 get_time(void)
 110 {
 111    struct timespec tp;
 112
 113    clock_gettime(CLOCK_MONOTONIC, &tp);
 114
 115    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 116 }
 117
 118 void
 119 aub_dump_bmp(struct gl_context *ctx)
 120 {
 121    struct gl_framebuffer *fb = ctx->DrawBuffer;
 122
 123    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 124       struct intel_renderbuffer *irb =
 125          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 126
 127       if (irb && irb->mt) {
 128          enum aub_dump_bmp_format format;
 129
 130          switch (irb->Base.Base.Format) {
 131          case MESA_FORMAT_B8G8R8A8_UNORM:
 132          case MESA_FORMAT_B8G8R8X8_UNORM:
 133             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 134             break;
 135          default:
 136             continue;
 137          }
 138
 139          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 140          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 141                                        irb->draw_x,
 142                                        irb->draw_y,
 143                                        irb->Base.Base.Width,
 144                                        irb->Base.Base.Height,
 145                                        format,
 146                                        irb->mt->region->pitch,
 147                                        0);
 148       }
 149    }
 150 }
 151
 152 static const __DRItexBufferExtension intelTexBufferExtension = {
 153    .base = { __DRI_TEX_BUFFER, 3 },
 154
 155    .setTexBuffer        = intelSetTexBuffer,
 156    .setTexBuffer2       = intelSetTexBuffer2,
 157    .releaseTexBuffer    = NULL,
 158 };
 159
 160 static void
 161 intelDRI2Flush(__DRIdrawable *drawable)
 162 {
 163    GET_CURRENT_CONTEXT(ctx);
 164    struct intel_context *intel = intel_context(ctx);
 165    if (intel == NULL)
 166       return;
 167
 168    INTEL_FIREVERTICES(intel);
 169
 170    intel->need_throttle = true;
 171
 172    if (intel->batch.used)
 173       intel_batchbuffer_flush(intel);
 174
 175    if (INTEL_DEBUG & DEBUG_AUB) {
 176       aub_dump_bmp(ctx);
 177    }
 178 }
 179
 180 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 181     .base = { __DRI2_FLUSH, 3 },
 182
 183     .flush              = intelDRI2Flush,
 184     .invalidate         = dri2InvalidateDrawable,
 185 };
 186
 187 static struct intel_image_format intel_image_formats[] = {
 188    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 189      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 190
 191    { __DRI_IMAGE_FOURCC_SARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 192      { { 0, 0, 0, __DRI_IMAGE_FORMAT_SARGB8, 4 } } },
 193
 194    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 195      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 196
 197    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 198      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 199        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 200        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 201
 202    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 203      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 204        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 205        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 206
 207    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 208      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 209        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 210        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 211
 212    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 213      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 214        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 215        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 216
 217    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 218      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 219        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 220        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 221
 222    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 223      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 224        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 225
 226    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 227      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 228        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 229
 230    /* For YUYV and UYVY buffers, we set up two overlapping DRI images
 231     * and treat them as planar buffers in the compositors.
 232     * Plane 0 is GR88 and samples YU or YV pairs and places Y into
 233     * the R component, while plane 1 is ARGB/ABGR and samples YUYV/UYVY
 234     * clusters and places pairs and places U into the G component and
 235     * V into A.  This lets the texture sampler interpolate the Y
 236     * components correctly when sampling from plane 0, and interpolate
 237     * U and V correctly when sampling from plane 1. */
 238    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 239      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 240        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 241    { __DRI_IMAGE_FOURCC_UYVY, __DRI_IMAGE_COMPONENTS_Y_UXVX, 2,
 242      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 243        { 0, 1, 0, __DRI_IMAGE_FORMAT_ABGR8888, 4 } } }
 244 };
 245
 246 static __DRIimage *
 247 intel_allocate_image(int dri_format, void *loaderPrivate)
 248 {
 249     __DRIimage *image;
 250
 251     image = calloc(1, sizeof *image);
 252     if (image == NULL)
 253         return NULL;
 254
 255     image->dri_format = dri_format;
 256     image->offset = 0;
 257
 258     image->format = driImageFormatToGLFormat(dri_format);
 259     if (dri_format != __DRI_IMAGE_FORMAT_NONE &&
 260         image->format == MESA_FORMAT_NONE) {
 261        free(image);
 262        return NULL;
 263     }
 264
 265     image->internal_format = _mesa_get_format_base_format(image->format);
 266     image->data = loaderPrivate;
 267
 268     return image;
 269 }
 270
 271 /**
 272  * Sets up a DRIImage structure to point to our shared image in a region
 273  */
 274 static void
 275 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 276                                    struct intel_mipmap_tree *mt, GLuint level,
 277                                    GLuint zoffset)
 278 {
 279    unsigned int draw_x, draw_y;
 280    uint32_t mask_x, mask_y;
 281
 282    intel_miptree_check_level_layer(mt, level, zoffset);
 283
 284    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y);
 285    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 286
 287    image->width = mt->level[level].width;
 288    image->height = mt->level[level].height;
 289    image->tile_x = draw_x & mask_x;
 290    image->tile_y = draw_y & mask_y;
 291
 292    image->offset = intel_region_get_aligned_offset(mt->region,
 293                                                    draw_x & ~mask_x,
 294                                                    draw_y & ~mask_y);
 295
 296    intel_region_reference(&image->region, mt->region);
 297 }
 298
 299 static void
 300 intel_setup_image_from_dimensions(__DRIimage *image)
 301 {
 302    image->width    = image->region->width;
 303    image->height   = image->region->height;
 304    image->tile_x = 0;
 305    image->tile_y = 0;
 306 }
 307
 308 static __DRIimage *
 309 intel_create_image_from_name(__DRIscreen *screen,
 310                              int width, int height, int format,
 311                              int name, int pitch, void *loaderPrivate)
 312 {
 313     struct intel_screen *intelScreen = screen->driverPrivate;
 314     __DRIimage *image;
 315     int cpp;
 316
 317     image = intel_allocate_image(format, loaderPrivate);
 318     if (image == NULL)
 319        return NULL;
 320
 321     if (image->format == MESA_FORMAT_NONE)
 322        cpp = 1;
 323     else
 324        cpp = _mesa_get_format_bytes(image->format);
 325     image->region = intel_region_alloc_for_handle(intelScreen,
 326                                                   cpp, width, height,
 327                                                   pitch * cpp, name, "image");
 328     if (image->region == NULL) {
 329        free(image);
 330        return NULL;
 331     }
 332
 333     intel_setup_image_from_dimensions(image);
 334
 335     return image;
 336 }
 337
 338 static __DRIimage *
 339 intel_create_image_from_renderbuffer(__DRIcontext *context,
 340                                      int renderbuffer, void *loaderPrivate)
 341 {
 342    __DRIimage *image;
 343    struct intel_context *intel = context->driverPrivate;
 344    struct gl_renderbuffer *rb;
 345    struct intel_renderbuffer *irb;
 346
 347    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 348    if (!rb) {
 349       _mesa_error(&intel->ctx,
 350                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 351       return NULL;
 352    }
 353
 354    irb = intel_renderbuffer(rb);
 355    image = calloc(1, sizeof *image);
 356    if (image == NULL)
 357       return NULL;
 358
 359    image->internal_format = rb->InternalFormat;
 360    image->format = rb->Format;
 361    image->offset = 0;
 362    image->data = loaderPrivate;
 363    intel_region_reference(&image->region, irb->mt->region);
 364    intel_setup_image_from_dimensions(image);
 365    image->dri_format = driGLFormatToImageFormat(image->format);
 366
 367    rb->NeedsFinishRenderTexture = true;
 368    return image;
 369 }
 370
 371 static __DRIimage *
 372 intel_create_image_from_texture(__DRIcontext *context, int target,
 373                                 unsigned texture, int zoffset,
 374                                 int level,
 375                                 unsigned *error,
 376                                 void *loaderPrivate)
 377 {
 378    __DRIimage *image;
 379    struct intel_context *intel = context->driverPrivate;
 380    struct gl_texture_object *obj;
 381    struct intel_texture_object *iobj;
 382    GLuint face = 0;
 383
 384    obj = _mesa_lookup_texture(&intel->ctx, texture);
 385    if (!obj || obj->Target != target) {
 386       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 387       return NULL;
 388    }
 389
 390    if (target == GL_TEXTURE_CUBE_MAP)
 391       face = zoffset;
 392
 393    _mesa_test_texobj_completeness(&intel->ctx, obj);
 394    iobj = intel_texture_object(obj);
 395    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 396       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 397       return NULL;
 398    }
 399
 400    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 401       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 402       return NULL;
 403    }
 404
 405    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 406       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 407       return NULL;
 408    }
 409    image = calloc(1, sizeof *image);
 410    if (image == NULL) {
 411       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 412       return NULL;
 413    }
 414
 415    image->internal_format = obj->Image[face][level]->InternalFormat;
 416    image->format = obj->Image[face][level]->TexFormat;
 417    image->data = loaderPrivate;
 418    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 419    image->dri_format = driGLFormatToImageFormat(image->format);
 420    if (image->dri_format == MESA_FORMAT_NONE) {
 421       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 422       free(image);
 423       return NULL;
 424    }
 425
 426    *error = __DRI_IMAGE_ERROR_SUCCESS;
 427    return image;
 428 }
 429
 430 static void
 431 intel_destroy_image(__DRIimage *image)
 432 {
 433     intel_region_release(&image->region);
 434     free(image);
 435 }
 436
 437 static __DRIimage *
 438 intel_create_image(__DRIscreen *screen,
 439                    int width, int height, int format,
 440                    unsigned int use,
 441                    void *loaderPrivate)
 442 {
 443    __DRIimage *image;
 444    struct intel_screen *intelScreen = screen->driverPrivate;
 445    uint32_t tiling;
 446    int cpp;
 447
 448    tiling = I915_TILING_X;
 449    if (use & __DRI_IMAGE_USE_CURSOR) {
 450       if (width != 64 || height != 64)
 451          return NULL;
 452       tiling = I915_TILING_NONE;
 453    }
 454
 455    if (use & __DRI_IMAGE_USE_LINEAR)
 456       tiling = I915_TILING_NONE;
 457
 458    image = intel_allocate_image(format, loaderPrivate);
 459    if (image == NULL)
 460       return NULL;
 461
 462    cpp = _mesa_get_format_bytes(image->format);
 463    image->region =
 464       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 465    if (image->region == NULL) {
 466       free(image);
 467       return NULL;
 468    }
 469
 470    intel_setup_image_from_dimensions(image);
 471
 472    return image;
 473 }
 474
 475 static GLboolean
 476 intel_query_image(__DRIimage *image, int attrib, int *value)
 477 {
 478    switch (attrib) {
 479    case __DRI_IMAGE_ATTRIB_STRIDE:
 480       *value = image->region->pitch;
 481       return true;
 482    case __DRI_IMAGE_ATTRIB_HANDLE:
 483       *value = image->region->bo->handle;
 484       return true;
 485    case __DRI_IMAGE_ATTRIB_NAME:
 486       return intel_region_flink(image->region, (uint32_t *) value);
 487    case __DRI_IMAGE_ATTRIB_FORMAT:
 488       *value = image->dri_format;
 489       return true;
 490    case __DRI_IMAGE_ATTRIB_WIDTH:
 491       *value = image->region->width;
 492       return true;
 493    case __DRI_IMAGE_ATTRIB_HEIGHT:
 494       *value = image->region->height;
 495       return true;
 496    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 497       if (image->planar_format == NULL)
 498          return false;
 499       *value = image->planar_format->components;
 500       return true;
 501    case __DRI_IMAGE_ATTRIB_FD:
 502       return !drm_intel_bo_gem_export_to_prime(image->region->bo, value);
 503   default:
 504       return false;
 505    }
 506 }
 507
 508 static __DRIimage *
 509 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 510 {
 511    __DRIimage *image;
 512
 513    image = calloc(1, sizeof *image);
 514    if (image == NULL)
 515       return NULL;
 516
 517    intel_region_reference(&image->region, orig_image->region);
 518    if (image->region == NULL) {
 519       free(image);
 520       return NULL;
 521    }
 522
 523    image->internal_format = orig_image->internal_format;
 524    image->planar_format   = orig_image->planar_format;
 525    image->dri_format      = orig_image->dri_format;
 526    image->format          = orig_image->format;
 527    image->offset          = orig_image->offset;
 528    image->width           = orig_image->width;
 529    image->height          = orig_image->height;
 530    image->tile_x          = orig_image->tile_x;
 531    image->tile_y          = orig_image->tile_y;
 532    image->data            = loaderPrivate;
 533
 534    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 535    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 536
 537    return image;
 538 }
 539
 540 static GLboolean
 541 intel_validate_usage(__DRIimage *image, unsigned int use)
 542 {
 543    if (use & __DRI_IMAGE_USE_CURSOR) {
 544       if (image->region->width != 64 || image->region->height != 64)
 545          return GL_FALSE;
 546    }
 547
 548    return GL_TRUE;
 549 }
 550
 551 static __DRIimage *
 552 intel_create_image_from_names(__DRIscreen *screen,
 553                               int width, int height, int fourcc,
 554                               int *names, int num_names,
 555                               int *strides, int *offsets,
 556                               void *loaderPrivate)
 557 {
 558     struct intel_image_format *f = NULL;
 559     __DRIimage *image;
 560     int i, index;
 561
 562     if (screen == NULL || names == NULL || num_names != 1)
 563         return NULL;
 564
 565     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 566         if (intel_image_formats[i].fourcc == fourcc) {
 567            f = &intel_image_formats[i];
 568         }
 569     }
 570
 571     if (f == NULL)
 572         return NULL;
 573
 574     image = intel_create_image_from_name(screen, width, height,
 575                                          __DRI_IMAGE_FORMAT_NONE,
 576                                          names[0], strides[0],
 577                                          loaderPrivate);
 578
 579    if (image == NULL)
 580       return NULL;
 581
 582     image->planar_format = f;
 583     for (i = 0; i < f->nplanes; i++) {
 584         index = f->planes[i].buffer_index;
 585         image->offsets[index] = offsets[index];
 586         image->strides[index] = strides[index];
 587     }
 588
 589     return image;
 590 }
 591
 592 static __DRIimage *
 593 intel_create_image_from_fds(__DRIscreen *screen,
 594                             int width, int height, int fourcc,
 595                             int *fds, int num_fds, int *strides, int *offsets,
 596                             void *loaderPrivate)
 597 {
 598    struct intel_screen *intelScreen = screen->driverPrivate;
 599    struct intel_image_format *f = NULL;
 600    __DRIimage *image;
 601    int i, index;
 602
 603    if (fds == NULL || num_fds != 1)
 604       return NULL;
 605
 606    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 607       if (intel_image_formats[i].fourcc == fourcc) {
 608          f = &intel_image_formats[i];
 609       }
 610    }
 611
 612    if (f == NULL)
 613       return NULL;
 614
 615    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 616    if (image == NULL)
 617       return NULL;
 618
 619    image->region = intel_region_alloc_for_fd(intelScreen,
 620                                              f->planes[0].cpp, width, height, strides[0],
 621                                              height * strides[0], fds[0], "image");
 622    if (image->region == NULL) {
 623       free(image);
 624       return NULL;
 625    }
 626
 627    intel_setup_image_from_dimensions(image);
 628
 629    image->planar_format = f;
 630    for (i = 0; i < f->nplanes; i++) {
 631       index = f->planes[i].buffer_index;
 632       image->offsets[index] = offsets[index];
 633       image->strides[index] = strides[index];
 634    }
 635
 636    return image;
 637 }
 638
 639
 640 static __DRIimage *
 641 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 642 {
 643     int width, height, offset, stride, dri_format, index;
 644     struct intel_image_format *f;
 645     uint32_t mask_x, mask_y;
 646     __DRIimage *image;
 647
 648     if (parent == NULL || parent->planar_format == NULL)
 649         return NULL;
 650
 651     f = parent->planar_format;
 652
 653     if (plane >= f->nplanes)
 654         return NULL;
 655
 656     width = parent->region->width >> f->planes[plane].width_shift;
 657     height = parent->region->height >> f->planes[plane].height_shift;
 658     dri_format = f->planes[plane].dri_format;
 659     index = f->planes[plane].buffer_index;
 660     offset = parent->offsets[index];
 661     stride = parent->strides[index];
 662
 663     image = intel_allocate_image(dri_format, loaderPrivate);
 664     if (image == NULL)
 665        return NULL;
 666
 667     if (offset + height * stride > parent->region->bo->size) {
 668        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 669        free(image);
 670        return NULL;
 671     }
 672
 673     image->region = calloc(sizeof(*image->region), 1);
 674     if (image->region == NULL) {
 675        free(image);
 676        return NULL;
 677     }
 678
 679     image->region->cpp = _mesa_get_format_bytes(image->format);
 680     image->region->width = width;
 681     image->region->height = height;
 682     image->region->pitch = stride;
 683     image->region->refcount = 1;
 684     image->region->bo = parent->region->bo;
 685     drm_intel_bo_reference(image->region->bo);
 686     image->region->tiling = parent->region->tiling;
 687     image->offset = offset;
 688     intel_setup_image_from_dimensions(image);
 689
 690     intel_region_get_tile_masks(image->region, &mask_x, &mask_y);
 691     if (offset & mask_x)
 692        _mesa_warning(NULL,
 693                      "intel_create_sub_image: offset not on tile boundary");
 694
 695     return image;
 696 }
 697
 698 static const __DRIimageExtension intelImageExtension = {
 699     .base = { __DRI_IMAGE, 7 },
 700
 701     .createImageFromName                = intel_create_image_from_name,
 702     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 703     .destroyImage                       = intel_destroy_image,
 704     .createImage                        = intel_create_image,
 705     .queryImage                         = intel_query_image,
 706     .dupImage                           = intel_dup_image,
 707     .validateUsage                      = intel_validate_usage,
 708     .createImageFromNames               = intel_create_image_from_names,
 709     .fromPlanar                         = intel_from_planar,
 710     .createImageFromTexture             = intel_create_image_from_texture,
 711     .createImageFromFds                 = intel_create_image_from_fds
 712 };
 713
 714 static int
 715 i915_query_renderer_integer(__DRIscreen *psp, int param, unsigned int *value)
 716 {
 717    const struct intel_screen *const intelScreen =
 718       (struct intel_screen *) psp->driverPrivate;
 719
 720    switch (param) {
 721    case __DRI2_RENDERER_VENDOR_ID:
 722       value[0] = 0x8086;
 723       return 0;
 724    case __DRI2_RENDERER_DEVICE_ID:
 725       value[0] = intelScreen->deviceID;
 726       return 0;
 727    case __DRI2_RENDERER_ACCELERATED:
 728       value[0] = 1;
 729       return 0;
 730    case __DRI2_RENDERER_VIDEO_MEMORY: {
 731       /* Once a batch uses more than 75% of the maximum mappable size, we
 732        * assume that there's some fragmentation, and we start doing extra
 733        * flushing, etc.  That's the big cliff apps will care about.
 734        */
 735       size_t aper_size;
 736       size_t mappable_size;
 737
 738       drm_intel_get_aperture_sizes(psp->fd, &mappable_size, &aper_size);
 739
 740       const unsigned gpu_mappable_megabytes =
 741          (aper_size / (1024 * 1024)) * 3 / 4;
 742
 743       const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
 744       const long system_page_size = sysconf(_SC_PAGE_SIZE);
 745
 746       if (system_memory_pages <= 0 || system_page_size <= 0)
 747          return -1;
 748
 749       const uint64_t system_memory_bytes = (uint64_t) system_memory_pages
 750          * (uint64_t) system_page_size;
 751
 752       const unsigned system_memory_megabytes =
 753          (unsigned) (system_memory_bytes / (1024 * 1024));
 754
 755       value[0] = MIN2(system_memory_megabytes, gpu_mappable_megabytes);
 756       return 0;
 757    }
 758    case __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE:
 759       value[0] = 1;
 760       return 0;
 761    case __DRI2_RENDERER_HAS_TEXTURE_3D:
 762       value[0] = 1;
 763       return 0;
 764    default:
 765       return driQueryRendererIntegerCommon(psp, param, value);
 766    }
 767
 768    return -1;
 769 }
 770
 771 static int
 772 i915_query_renderer_string(__DRIscreen *psp, int param, const char **value)
 773 {
 774    const struct intel_screen *intelScreen =
 775       (struct intel_screen *) psp->driverPrivate;
 776
 777    switch (param) {
 778    case __DRI2_RENDERER_VENDOR_ID:
 779       value[0] = i915_vendor_string;
 780       return 0;
 781    case __DRI2_RENDERER_DEVICE_ID:
 782       value[0] = i915_get_renderer_string(intelScreen->deviceID);
 783       return 0;
 784    default:
 785       break;
 786    }
 787
 788    return -1;
 789 }
 790
 791 static const __DRI2rendererQueryExtension intelRendererQueryExtension = {
 792    .base = { __DRI2_RENDERER_QUERY, 1 },
 793
 794    .queryInteger = i915_query_renderer_integer,
 795    .queryString = i915_query_renderer_string
 796 };
 797
 798 static const __DRIextension *intelScreenExtensions[] = {
 799     &intelTexBufferExtension.base,
 800     &intelFenceExtension.base,
 801     &intelFlushExtension.base,
 802     &intelImageExtension.base,
 803     &intelRendererQueryExtension.base,
 804     &dri2ConfigQueryExtension.base,
 805     &dri2NoErrorExtension.base,
 806     NULL
 807 };
 808
 809 static bool
 810 intel_get_param(__DRIscreen *psp, int param, int *value)
 811 {
 812    int ret;
 813    struct drm_i915_getparam gp;
 814
 815    memset(&gp, 0, sizeof(gp));
 816    gp.param = param;
 817    gp.value = value;
 818
 819    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 820    if (ret) {
 821       if (ret != -EINVAL)
 822          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 823       return false;
 824    }
 825
 826    return true;
 827 }
 828
 829 static bool
 830 intel_get_boolean(__DRIscreen *psp, int param)
 831 {
 832    int value = 0;
 833    return intel_get_param(psp, param, &value) && value;
 834 }
 835
 836 static void
 837 intelDestroyScreen(__DRIscreen * sPriv)
 838 {
 839    struct intel_screen *intelScreen = sPriv->driverPrivate;
 840
 841    dri_bufmgr_destroy(intelScreen->bufmgr);
 842    driDestroyOptionInfo(&intelScreen->optionCache);
 843
 844    free(intelScreen);
 845    sPriv->driverPrivate = NULL;
 846 }
 847
 848
 849 /**
 850  * This is called when we need to set up GL rendering to a new X window.
 851  */
 852 static GLboolean
 853 intelCreateBuffer(__DRIscreen * driScrnPriv,
 854                   __DRIdrawable * driDrawPriv,
 855                   const struct gl_config * mesaVis, GLboolean isPixmap)
 856 {
 857    struct intel_renderbuffer *rb;
 858    mesa_format rgbFormat;
 859    struct gl_framebuffer *fb;
 860
 861    if (isPixmap)
 862       return false;
 863
 864    fb = CALLOC_STRUCT(gl_framebuffer);
 865    if (!fb)
 866       return false;
 867
 868    _mesa_initialize_window_framebuffer(fb, mesaVis);
 869
 870    if (mesaVis->redBits == 5)
 871       rgbFormat = MESA_FORMAT_B5G6R5_UNORM;
 872    else if (mesaVis->sRGBCapable)
 873       rgbFormat = MESA_FORMAT_B8G8R8A8_SRGB;
 874    else if (mesaVis->alphaBits == 0)
 875       rgbFormat = MESA_FORMAT_B8G8R8X8_UNORM;
 876    else
 877       rgbFormat = MESA_FORMAT_B8G8R8A8_UNORM;
 878
 879    /* setup the hardware-based renderbuffers */
 880    rb = intel_create_renderbuffer(rgbFormat);
 881    _mesa_attach_and_own_rb(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 882
 883    if (mesaVis->doubleBufferMode) {
 884       rb = intel_create_renderbuffer(rgbFormat);
 885       _mesa_attach_and_own_rb(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 886    }
 887
 888    /*
 889     * Assert here that the gl_config has an expected depth/stencil bit
 890     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 891     * which constructs the advertised configs.)
 892     */
 893    if (mesaVis->depthBits == 24) {
 894       assert(mesaVis->stencilBits == 8);
 895
 896       /*
 897        * Use combined depth/stencil. Note that the renderbuffer is
 898        * attached to two attachment points.
 899        */
 900       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z24_UNORM_S8_UINT);
 901       _mesa_attach_and_own_rb(fb, BUFFER_DEPTH, &rb->Base.Base);
 902       _mesa_attach_and_reference_rb(fb, BUFFER_STENCIL, &rb->Base.Base);
 903    }
 904    else if (mesaVis->depthBits == 16) {
 905       assert(mesaVis->stencilBits == 0);
 906       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z_UNORM16);
 907       _mesa_attach_and_own_rb(fb, BUFFER_DEPTH, &rb->Base.Base);
 908    }
 909    else {
 910       assert(mesaVis->depthBits == 0);
 911       assert(mesaVis->stencilBits == 0);
 912    }
 913
 914    /* now add any/all software-based renderbuffers we may need */
 915    _swrast_add_soft_renderbuffers(fb,
 916                                   false, /* never sw color */
 917                                   false, /* never sw depth */
 918                                   false, /* never sw stencil */
 919                                   mesaVis->accumRedBits > 0,
 920                                   false, /* never sw alpha */
 921                                   false  /* never sw aux */ );
 922    driDrawPriv->driverPrivate = fb;
 923
 924    return true;
 925 }
 926
 927 static void
 928 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 929 {
 930     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 931
 932     _mesa_reference_framebuffer(&fb, NULL);
 933 }
 934
 935 /* There are probably better ways to do this, such as an
 936  * init-designated function to register chipids and createcontext
 937  * functions.
 938  */
 939 extern bool
 940 i830CreateContext(int api,
 941                   const struct gl_config *mesaVis,
 942                   __DRIcontext *driContextPriv,
 943                   unsigned major_version,
 944                   unsigned minor_version,
 945                   uint32_t flags,
 946                   unsigned *error,
 947                   void *sharedContextPrivate);
 948
 949 extern bool
 950 i915CreateContext(int api,
 951                   const struct gl_config *mesaVis,
 952                   __DRIcontext *driContextPriv,
 953                   unsigned major_version,
 954                   unsigned minor_version,
 955                   uint32_t flags,
 956                   unsigned *error,
 957                   void *sharedContextPrivate);
 958
 959 static GLboolean
 960 intelCreateContext(gl_api api,
 961                    const struct gl_config * mesaVis,
 962                    __DRIcontext * driContextPriv,
 963                    unsigned major_version,
 964                    unsigned minor_version,
 965                    uint32_t flags,
 966                    bool notify_reset,
 967                    unsigned *error,
 968                    void *sharedContextPrivate)
 969 {
 970    bool success = false;
 971
 972    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 973    struct intel_screen *intelScreen = sPriv->driverPrivate;
 974
 975    if (flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_NO_ERROR)) {
 976       *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
 977       return false;
 978    }
 979
 980    if (notify_reset) {
 981       *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
 982       return false;
 983    }
 984
 985    if (IS_GEN3(intelScreen->deviceID)) {
 986       success = i915CreateContext(api, mesaVis, driContextPriv,
 987                                   major_version, minor_version, flags,
 988                                   error, sharedContextPrivate);
 989    } else {
 990       intelScreen->no_vbo = true;
 991       success = i830CreateContext(api, mesaVis, driContextPriv,
 992                                   major_version, minor_version, flags,
 993                                   error, sharedContextPrivate);
 994    }
 995
 996    if (success)
 997       return true;
 998
 999    if (driContextPriv->driverPrivate != NULL)
1000       intelDestroyContext(driContextPriv);
1001
1002    return false;
1003 }
1004
1005 static bool
1006 intel_init_bufmgr(struct intel_screen *intelScreen)
1007 {
1008    __DRIscreen *spriv = intelScreen->driScrnPriv;
1009
1010    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
1011
1012    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
1013    if (intelScreen->bufmgr == NULL) {
1014       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
1015               __func__, __LINE__);
1016       return false;
1017    }
1018
1019    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
1020
1021    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
1022       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
1023       return false;
1024    }
1025
1026    return true;
1027 }
1028
1029 static bool
1030 intel_detect_swizzling(struct intel_screen *screen)
1031 {
1032    drm_intel_bo *buffer;
1033    unsigned long flags = 0;
1034    unsigned long aligned_pitch;
1035    uint32_t tiling = I915_TILING_X;
1036    uint32_t swizzle_mode = 0;
1037
1038    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
1039                                      64, 64, 4,
1040                                      &tiling, &aligned_pitch, flags);
1041    if (buffer == NULL)
1042       return false;
1043
1044    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
1045    drm_intel_bo_unreference(buffer);
1046
1047    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
1048       return false;
1049    else
1050       return true;
1051 }
1052
1053 static __DRIconfig**
1054 intel_screen_make_configs(__DRIscreen *dri_screen)
1055 {
1056    static const mesa_format formats[] = {
1057       MESA_FORMAT_B5G6R5_UNORM,
1058       MESA_FORMAT_B8G8R8A8_UNORM,
1059       MESA_FORMAT_B8G8R8X8_UNORM
1060    };
1061
1062    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1063    static const GLenum back_buffer_modes[] = {
1064        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1065    };
1066
1067    static const uint8_t singlesample_samples[1] = {0};
1068
1069    uint8_t depth_bits[4], stencil_bits[4];
1070    __DRIconfig **configs = NULL;
1071
1072    /* Generate singlesample configs without accumulation buffer. */
1073    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1074       __DRIconfig **new_configs;
1075       int num_depth_stencil_bits = 2;
1076
1077       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1078        * buffer that has a different number of bits per pixel than the color
1079        * buffer.
1080        */
1081       depth_bits[0] = 0;
1082       stencil_bits[0] = 0;
1083
1084       if (formats[i] == MESA_FORMAT_B5G6R5_UNORM) {
1085          depth_bits[1] = 16;
1086          stencil_bits[1] = 0;
1087       } else {
1088          depth_bits[1] = 24;
1089          stencil_bits[1] = 8;
1090       }
1091
1092       new_configs = driCreateConfigs(formats[i],
1093                                      depth_bits,
1094                                      stencil_bits,
1095                                      num_depth_stencil_bits,
1096                                      back_buffer_modes, 2,
1097                                      singlesample_samples, 1,
1098                                      false, false);
1099       configs = driConcatConfigs(configs, new_configs);
1100    }
1101
1102    /* Generate the minimum possible set of configs that include an
1103     * accumulation buffer.
1104     */
1105    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1106       __DRIconfig **new_configs;
1107
1108       if (formats[i] == MESA_FORMAT_B5G6R5_UNORM) {
1109          depth_bits[0] = 16;
1110          stencil_bits[0] = 0;
1111       } else {
1112          depth_bits[0] = 24;
1113          stencil_bits[0] = 8;
1114       }
1115
1116       new_configs = driCreateConfigs(formats[i],
1117                                      depth_bits, stencil_bits, 1,
1118                                      back_buffer_modes, 1,
1119                                      singlesample_samples, 1,
1120                                      true, false);
1121       configs = driConcatConfigs(configs, new_configs);
1122    }
1123
1124    if (configs == NULL) {
1125       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1126               __LINE__);
1127       return NULL;
1128    }
1129
1130    return configs;
1131 }
1132
1133 static void
1134 set_max_gl_versions(struct intel_screen *screen)
1135 {
1136    __DRIscreen *psp = screen->driScrnPriv;
1137
1138    switch (screen->gen) {
1139    case 3: {
1140       bool has_fragment_shader = driQueryOptionb(&screen->optionCache, "fragment_shader");
1141       bool has_occlusion_query = driQueryOptionb(&screen->optionCache, "stub_occlusion_query");
1142
1143       psp->max_gl_core_version = 0;
1144       psp->max_gl_es1_version = 11;
1145       psp->max_gl_es2_version = 20;
1146
1147       if (has_fragment_shader && has_occlusion_query) {
1148          psp->max_gl_compat_version = 21;
1149       } else {
1150          psp->max_gl_compat_version = 14;
1151       }
1152       break;
1153    }
1154    case 2:
1155       psp->max_gl_core_version = 0;
1156       psp->max_gl_compat_version = 13;
1157       psp->max_gl_es1_version = 11;
1158       psp->max_gl_es2_version = 0;
1159       break;
1160    default:
1161       assert(!"unrecognized intel_screen::gen");
1162       break;
1163    }
1164 }
1165
1166 /**
1167  * This is the driver specific part of the createNewScreen entry point.
1168  * Called when using DRI2.
1169  *
1170  * \return the struct gl_config supported by this driver
1171  */
1172 static const
1173 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1174 {
1175    struct intel_screen *intelScreen;
1176
1177    if (psp->image.loader) {
1178    } else if (psp->dri2.loader->base.version <= 2 ||
1179        psp->dri2.loader->getBuffersWithFormat == NULL) {
1180       fprintf(stderr,
1181               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1182               "support required\n");
1183       return false;
1184    }
1185
1186    /* Allocate the private area */
1187    intelScreen = calloc(1, sizeof *intelScreen);
1188    if (!intelScreen) {
1189       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1190       return false;
1191    }
1192    /* parse information in __driConfigOptions */
1193    driParseOptionInfo(&intelScreen->optionCache, i915_config_options.xml);
1194
1195    intelScreen->driScrnPriv = psp;
1196    psp->driverPrivate = (void *) intelScreen;
1197
1198    if (!intel_init_bufmgr(intelScreen))
1199        return false;
1200
1201    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1202
1203    if (IS_GEN3(intelScreen->deviceID)) {
1204       intelScreen->gen = 3;
1205    } else {
1206       intelScreen->gen = 2;
1207    }
1208
1209    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1210
1211    set_max_gl_versions(intelScreen);
1212
1213    psp->extensions = intelScreenExtensions;
1214
1215    return (const __DRIconfig**) intel_screen_make_configs(psp);
1216 }
1217
1218 struct intel_buffer {
1219    __DRIbuffer base;
1220    struct intel_region *region;
1221 };
1222
1223 static __DRIbuffer *
1224 intelAllocateBuffer(__DRIscreen *screen,
1225                     unsigned attachment, unsigned format,
1226                     int width, int height)
1227 {
1228    struct intel_buffer *intelBuffer;
1229    struct intel_screen *intelScreen = screen->driverPrivate;
1230
1231    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1232           attachment == __DRI_BUFFER_BACK_LEFT);
1233
1234    intelBuffer = calloc(1, sizeof *intelBuffer);
1235    if (intelBuffer == NULL)
1236       return NULL;
1237
1238    /* The front and back buffers are color buffers, which are X tiled. */
1239    intelBuffer->region = intel_region_alloc(intelScreen,
1240                                             I915_TILING_X,
1241                                             format / 8,
1242                                             width,
1243                                             height,
1244                                             true);
1245
1246    if (intelBuffer->region == NULL) {
1247            free(intelBuffer);
1248            return NULL;
1249    }
1250
1251    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1252
1253    intelBuffer->base.attachment = attachment;
1254    intelBuffer->base.cpp = intelBuffer->region->cpp;
1255    intelBuffer->base.pitch = intelBuffer->region->pitch;
1256
1257    return &intelBuffer->base;
1258 }
1259
1260 static void
1261 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1262 {
1263    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1264
1265    intel_region_release(&intelBuffer->region);
1266    free(intelBuffer);
1267 }
1268
1269
1270 static const struct __DriverAPIRec i915_driver_api = {
1271    .InitScreen           = intelInitScreen2,
1272    .DestroyScreen        = intelDestroyScreen,
1273    .CreateContext        = intelCreateContext,
1274    .DestroyContext       = intelDestroyContext,
1275    .CreateBuffer         = intelCreateBuffer,
1276    .DestroyBuffer        = intelDestroyBuffer,
1277    .MakeCurrent          = intelMakeCurrent,
1278    .UnbindContext        = intelUnbindContext,
1279    .AllocateBuffer       = intelAllocateBuffer,
1280    .ReleaseBuffer        = intelReleaseBuffer
1281 };
1282
1283 static const struct __DRIDriverVtableExtensionRec i915_vtable = {
1284    .base = { __DRI_DRIVER_VTABLE, 1 },
1285    .vtable = &i915_driver_api,
1286 };
1287
1288 /* This is the table of extensions that the loader will dlsym() for. */
1289 static const __DRIextension *i915_driver_extensions[] = {
1290     &driCoreExtension.base,
1291     &driImageDriverExtension.base,
1292     &driDRI2Extension.base,
1293     &i915_vtable.base,
1294     &i915_config_options.base,
1295     NULL
1296 };
1297
1298 PUBLIC const __DRIextension **__driDriverGetExtensions_i915(void)
1299 {
1300    globalDriverAPI = &i915_driver_api;
1301
1302    return i915_driver_extensions;
1303 }