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