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_SECTION_END
  71    DRI_CONF_SECTION_DEBUG
  72       DRI_CONF_NO_RAST("false")
  73       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  74       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  75       DRI_CONF_DISABLE_THROTTLING("false")
  76       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  77       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  78       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  79
  80       DRI_CONF_OPT_BEGIN_B(stub_occlusion_query, "false")
  81          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  82       DRI_CONF_OPT_END
  83
  84       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  85          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  86       DRI_CONF_OPT_END
  87    DRI_CONF_SECTION_END
  88 DRI_CONF_END
  89 };
  90
  91 #include "intel_batchbuffer.h"
  92 #include "intel_buffers.h"
  93 #include "intel_bufmgr.h"
  94 #include "intel_chipset.h"
  95 #include "intel_fbo.h"
  96 #include "intel_mipmap_tree.h"
  97 #include "intel_screen.h"
  98 #include "intel_tex.h"
  99 #include "intel_regions.h"
 100
 101 #include "i915_drm.h"
 102
 103 /**
 104  * For debugging purposes, this returns a time in seconds.
 105  */
 106 double
 107 get_time(void)
 108 {
 109    struct timespec tp;
 110
 111    clock_gettime(CLOCK_MONOTONIC, &tp);
 112
 113    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 114 }
 115
 116 void
 117 aub_dump_bmp(struct gl_context *ctx)
 118 {
 119    struct gl_framebuffer *fb = ctx->DrawBuffer;
 120
 121    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 122       struct intel_renderbuffer *irb =
 123          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 124
 125       if (irb && irb->mt) {
 126          enum aub_dump_bmp_format format;
 127
 128          switch (irb->Base.Base.Format) {
 129          case MESA_FORMAT_B8G8R8A8_UNORM:
 130          case MESA_FORMAT_B8G8R8X8_UNORM:
 131             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 132             break;
 133          default:
 134             continue;
 135          }
 136
 137          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 138          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 139                                        irb->draw_x,
 140                                        irb->draw_y,
 141                                        irb->Base.Base.Width,
 142                                        irb->Base.Base.Height,
 143                                        format,
 144                                        irb->mt->region->pitch,
 145                                        0);
 146       }
 147    }
 148 }
 149
 150 static const __DRItexBufferExtension intelTexBufferExtension = {
 151    .base = { __DRI_TEX_BUFFER, 3 },
 152
 153    .setTexBuffer        = intelSetTexBuffer,
 154    .setTexBuffer2       = intelSetTexBuffer2,
 155    .releaseTexBuffer    = NULL,
 156 };
 157
 158 static void
 159 intelDRI2Flush(__DRIdrawable *drawable)
 160 {
 161    GET_CURRENT_CONTEXT(ctx);
 162    struct intel_context *intel = intel_context(ctx);
 163    if (intel == NULL)
 164       return;
 165
 166    INTEL_FIREVERTICES(intel);
 167
 168    intel->need_throttle = true;
 169
 170    if (intel->batch.used)
 171       intel_batchbuffer_flush(intel);
 172
 173    if (INTEL_DEBUG & DEBUG_AUB) {
 174       aub_dump_bmp(ctx);
 175    }
 176 }
 177
 178 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 179     .base = { __DRI2_FLUSH, 3 },
 180
 181     .flush              = intelDRI2Flush,
 182     .invalidate         = dri2InvalidateDrawable,
 183 };
 184
 185 static struct intel_image_format intel_image_formats[] = {
 186    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 187      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 188
 189    { __DRI_IMAGE_FOURCC_SARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 190      { { 0, 0, 0, __DRI_IMAGE_FORMAT_SARGB8, 4 } } },
 191
 192    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 193      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 194
 195    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 196      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 197        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 198        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 199
 200    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 201      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 202        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 203        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 204
 205    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 206      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 207        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 208        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 209
 210    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 211      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 212        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 213        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 214
 215    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 216      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 217        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 218        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 219
 220    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 221      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 222        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 223
 224    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 225      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 226        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 227
 228    /* For YUYV and UYVY buffers, we set up two overlapping DRI images
 229     * and treat them as planar buffers in the compositors.
 230     * Plane 0 is GR88 and samples YU or YV pairs and places Y into
 231     * the R component, while plane 1 is ARGB/ABGR and samples YUYV/UYVY
 232     * clusters and places pairs and places U into the G component and
 233     * V into A.  This lets the texture sampler interpolate the Y
 234     * components correctly when sampling from plane 0, and interpolate
 235     * U and V correctly when sampling from plane 1. */
 236    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 237      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 238        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 239    { __DRI_IMAGE_FOURCC_UYVY, __DRI_IMAGE_COMPONENTS_Y_UXVX, 2,
 240      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 241        { 0, 1, 0, __DRI_IMAGE_FORMAT_ABGR8888, 4 } } }
 242 };
 243
 244 static __DRIimage *
 245 intel_allocate_image(int dri_format, void *loaderPrivate)
 246 {
 247     __DRIimage *image;
 248
 249     image = calloc(1, sizeof *image);
 250     if (image == NULL)
 251         return NULL;
 252
 253     image->dri_format = dri_format;
 254     image->offset = 0;
 255
 256     image->format = driImageFormatToGLFormat(dri_format);
 257     if (dri_format != __DRI_IMAGE_FORMAT_NONE &&
 258         image->format == MESA_FORMAT_NONE) {
 259        free(image);
 260        return NULL;
 261     }
 262
 263     image->internal_format = _mesa_get_format_base_format(image->format);
 264     image->data = loaderPrivate;
 265
 266     return image;
 267 }
 268
 269 /**
 270  * Sets up a DRIImage structure to point to our shared image in a region
 271  */
 272 static void
 273 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 274                                    struct intel_mipmap_tree *mt, GLuint level,
 275                                    GLuint zoffset)
 276 {
 277    unsigned int draw_x, draw_y;
 278    uint32_t mask_x, mask_y;
 279
 280    intel_miptree_check_level_layer(mt, level, zoffset);
 281
 282    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y);
 283    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 284
 285    image->width = mt->level[level].width;
 286    image->height = mt->level[level].height;
 287    image->tile_x = draw_x & mask_x;
 288    image->tile_y = draw_y & mask_y;
 289
 290    image->offset = intel_region_get_aligned_offset(mt->region,
 291                                                    draw_x & ~mask_x,
 292                                                    draw_y & ~mask_y);
 293
 294    intel_region_reference(&image->region, mt->region);
 295 }
 296
 297 static void
 298 intel_setup_image_from_dimensions(__DRIimage *image)
 299 {
 300    image->width    = image->region->width;
 301    image->height   = image->region->height;
 302    image->tile_x = 0;
 303    image->tile_y = 0;
 304 }
 305
 306 static __DRIimage *
 307 intel_create_image_from_name(__DRIscreen *screen,
 308                              int width, int height, int format,
 309                              int name, int pitch, void *loaderPrivate)
 310 {
 311     struct intel_screen *intelScreen = screen->driverPrivate;
 312     __DRIimage *image;
 313     int cpp;
 314
 315     image = intel_allocate_image(format, loaderPrivate);
 316     if (image == NULL)
 317        return NULL;
 318
 319     if (image->format == MESA_FORMAT_NONE)
 320        cpp = 1;
 321     else
 322        cpp = _mesa_get_format_bytes(image->format);
 323     image->region = intel_region_alloc_for_handle(intelScreen,
 324                                                   cpp, width, height,
 325                                                   pitch * cpp, name, "image");
 326     if (image->region == NULL) {
 327        free(image);
 328        return NULL;
 329     }
 330
 331     intel_setup_image_from_dimensions(image);
 332
 333     return image;
 334 }
 335
 336 static __DRIimage *
 337 intel_create_image_from_renderbuffer(__DRIcontext *context,
 338                                      int renderbuffer, void *loaderPrivate)
 339 {
 340    __DRIimage *image;
 341    struct intel_context *intel = context->driverPrivate;
 342    struct gl_renderbuffer *rb;
 343    struct intel_renderbuffer *irb;
 344
 345    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 346    if (!rb) {
 347       _mesa_error(&intel->ctx,
 348                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 349       return NULL;
 350    }
 351
 352    irb = intel_renderbuffer(rb);
 353    image = calloc(1, sizeof *image);
 354    if (image == NULL)
 355       return NULL;
 356
 357    image->internal_format = rb->InternalFormat;
 358    image->format = rb->Format;
 359    image->offset = 0;
 360    image->data = loaderPrivate;
 361    intel_region_reference(&image->region, irb->mt->region);
 362    intel_setup_image_from_dimensions(image);
 363    image->dri_format = driGLFormatToImageFormat(image->format);
 364
 365    rb->NeedsFinishRenderTexture = true;
 366    return image;
 367 }
 368
 369 static __DRIimage *
 370 intel_create_image_from_texture(__DRIcontext *context, int target,
 371                                 unsigned texture, int zoffset,
 372                                 int level,
 373                                 unsigned *error,
 374                                 void *loaderPrivate)
 375 {
 376    __DRIimage *image;
 377    struct intel_context *intel = context->driverPrivate;
 378    struct gl_texture_object *obj;
 379    struct intel_texture_object *iobj;
 380    GLuint face = 0;
 381
 382    obj = _mesa_lookup_texture(&intel->ctx, texture);
 383    if (!obj || obj->Target != target) {
 384       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 385       return NULL;
 386    }
 387
 388    if (target == GL_TEXTURE_CUBE_MAP)
 389       face = zoffset;
 390
 391    _mesa_test_texobj_completeness(&intel->ctx, obj);
 392    iobj = intel_texture_object(obj);
 393    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 394       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 395       return NULL;
 396    }
 397
 398    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 399       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 400       return NULL;
 401    }
 402
 403    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 404       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 405       return NULL;
 406    }
 407    image = calloc(1, sizeof *image);
 408    if (image == NULL) {
 409       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 410       return NULL;
 411    }
 412
 413    image->internal_format = obj->Image[face][level]->InternalFormat;
 414    image->format = obj->Image[face][level]->TexFormat;
 415    image->data = loaderPrivate;
 416    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 417    image->dri_format = driGLFormatToImageFormat(image->format);
 418    if (image->dri_format == MESA_FORMAT_NONE) {
 419       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 420       free(image);
 421       return NULL;
 422    }
 423
 424    *error = __DRI_IMAGE_ERROR_SUCCESS;
 425    return image;
 426 }
 427
 428 static void
 429 intel_destroy_image(__DRIimage *image)
 430 {
 431     intel_region_release(&image->region);
 432     free(image);
 433 }
 434
 435 static __DRIimage *
 436 intel_create_image(__DRIscreen *screen,
 437                    int width, int height, int format,
 438                    unsigned int use,
 439                    void *loaderPrivate)
 440 {
 441    __DRIimage *image;
 442    struct intel_screen *intelScreen = screen->driverPrivate;
 443    uint32_t tiling;
 444    int cpp;
 445
 446    tiling = I915_TILING_X;
 447    if (use & __DRI_IMAGE_USE_CURSOR) {
 448       if (width != 64 || height != 64)
 449          return NULL;
 450       tiling = I915_TILING_NONE;
 451    }
 452
 453    if (use & __DRI_IMAGE_USE_LINEAR)
 454       tiling = I915_TILING_NONE;
 455
 456    image = intel_allocate_image(format, loaderPrivate);
 457    if (image == NULL)
 458       return NULL;
 459
 460    cpp = _mesa_get_format_bytes(image->format);
 461    image->region =
 462       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 463    if (image->region == NULL) {
 464       free(image);
 465       return NULL;
 466    }
 467
 468    intel_setup_image_from_dimensions(image);
 469
 470    return image;
 471 }
 472
 473 static GLboolean
 474 intel_query_image(__DRIimage *image, int attrib, int *value)
 475 {
 476    switch (attrib) {
 477    case __DRI_IMAGE_ATTRIB_STRIDE:
 478       *value = image->region->pitch;
 479       return true;
 480    case __DRI_IMAGE_ATTRIB_HANDLE:
 481       *value = image->region->bo->handle;
 482       return true;
 483    case __DRI_IMAGE_ATTRIB_NAME:
 484       return intel_region_flink(image->region, (uint32_t *) value);
 485    case __DRI_IMAGE_ATTRIB_FORMAT:
 486       *value = image->dri_format;
 487       return true;
 488    case __DRI_IMAGE_ATTRIB_WIDTH:
 489       *value = image->region->width;
 490       return true;
 491    case __DRI_IMAGE_ATTRIB_HEIGHT:
 492       *value = image->region->height;
 493       return true;
 494    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 495       if (image->planar_format == NULL)
 496          return false;
 497       *value = image->planar_format->components;
 498       return true;
 499    case __DRI_IMAGE_ATTRIB_FD:
 500       return !drm_intel_bo_gem_export_to_prime(image->region->bo, value);
 501   default:
 502       return false;
 503    }
 504 }
 505
 506 static __DRIimage *
 507 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 508 {
 509    __DRIimage *image;
 510
 511    image = calloc(1, sizeof *image);
 512    if (image == NULL)
 513       return NULL;
 514
 515    intel_region_reference(&image->region, orig_image->region);
 516    if (image->region == NULL) {
 517       free(image);
 518       return NULL;
 519    }
 520
 521    image->internal_format = orig_image->internal_format;
 522    image->planar_format   = orig_image->planar_format;
 523    image->dri_format      = orig_image->dri_format;
 524    image->format          = orig_image->format;
 525    image->offset          = orig_image->offset;
 526    image->width           = orig_image->width;
 527    image->height          = orig_image->height;
 528    image->tile_x          = orig_image->tile_x;
 529    image->tile_y          = orig_image->tile_y;
 530    image->data            = loaderPrivate;
 531
 532    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 533    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 534
 535    return image;
 536 }
 537
 538 static GLboolean
 539 intel_validate_usage(__DRIimage *image, unsigned int use)
 540 {
 541    if (use & __DRI_IMAGE_USE_CURSOR) {
 542       if (image->region->width != 64 || image->region->height != 64)
 543          return GL_FALSE;
 544    }
 545
 546    return GL_TRUE;
 547 }
 548
 549 static __DRIimage *
 550 intel_create_image_from_names(__DRIscreen *screen,
 551                               int width, int height, int fourcc,
 552                               int *names, int num_names,
 553                               int *strides, int *offsets,
 554                               void *loaderPrivate)
 555 {
 556     struct intel_image_format *f = NULL;
 557     __DRIimage *image;
 558     int i, index;
 559
 560     if (screen == NULL || names == NULL || num_names != 1)
 561         return NULL;
 562
 563     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 564         if (intel_image_formats[i].fourcc == fourcc) {
 565            f = &intel_image_formats[i];
 566         }
 567     }
 568
 569     if (f == NULL)
 570         return NULL;
 571
 572     image = intel_create_image_from_name(screen, width, height,
 573                                          __DRI_IMAGE_FORMAT_NONE,
 574                                          names[0], strides[0],
 575                                          loaderPrivate);
 576
 577    if (image == NULL)
 578       return NULL;
 579
 580     image->planar_format = f;
 581     for (i = 0; i < f->nplanes; i++) {
 582         index = f->planes[i].buffer_index;
 583         image->offsets[index] = offsets[index];
 584         image->strides[index] = strides[index];
 585     }
 586
 587     return image;
 588 }
 589
 590 static __DRIimage *
 591 intel_create_image_from_fds(__DRIscreen *screen,
 592                             int width, int height, int fourcc,
 593                             int *fds, int num_fds, int *strides, int *offsets,
 594                             void *loaderPrivate)
 595 {
 596    struct intel_screen *intelScreen = screen->driverPrivate;
 597    struct intel_image_format *f = NULL;
 598    __DRIimage *image;
 599    int i, index;
 600
 601    if (fds == NULL || num_fds != 1)
 602       return NULL;
 603
 604    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 605       if (intel_image_formats[i].fourcc == fourcc) {
 606          f = &intel_image_formats[i];
 607       }
 608    }
 609
 610    if (f == NULL)
 611       return NULL;
 612
 613    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 614    if (image == NULL)
 615       return NULL;
 616
 617    image->region = intel_region_alloc_for_fd(intelScreen,
 618                                              f->planes[0].cpp, width, height, strides[0],
 619                                              height * strides[0], fds[0], "image");
 620    if (image->region == NULL) {
 621       free(image);
 622       return NULL;
 623    }
 624
 625    intel_setup_image_from_dimensions(image);
 626
 627    image->planar_format = f;
 628    for (i = 0; i < f->nplanes; i++) {
 629       index = f->planes[i].buffer_index;
 630       image->offsets[index] = offsets[index];
 631       image->strides[index] = strides[index];
 632    }
 633
 634    return image;
 635 }
 636
 637
 638 static __DRIimage *
 639 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 640 {
 641     int width, height, offset, stride, dri_format, index;
 642     struct intel_image_format *f;
 643     uint32_t mask_x, mask_y;
 644     __DRIimage *image;
 645
 646     if (parent == NULL || parent->planar_format == NULL)
 647         return NULL;
 648
 649     f = parent->planar_format;
 650
 651     if (plane >= f->nplanes)
 652         return NULL;
 653
 654     width = parent->region->width >> f->planes[plane].width_shift;
 655     height = parent->region->height >> f->planes[plane].height_shift;
 656     dri_format = f->planes[plane].dri_format;
 657     index = f->planes[plane].buffer_index;
 658     offset = parent->offsets[index];
 659     stride = parent->strides[index];
 660
 661     image = intel_allocate_image(dri_format, loaderPrivate);
 662     if (image == NULL)
 663        return NULL;
 664
 665     if (offset + height * stride > parent->region->bo->size) {
 666        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 667        free(image);
 668        return NULL;
 669     }
 670
 671     image->region = calloc(sizeof(*image->region), 1);
 672     if (image->region == NULL) {
 673        free(image);
 674        return NULL;
 675     }
 676
 677     image->region->cpp = _mesa_get_format_bytes(image->format);
 678     image->region->width = width;
 679     image->region->height = height;
 680     image->region->pitch = stride;
 681     image->region->refcount = 1;
 682     image->region->bo = parent->region->bo;
 683     drm_intel_bo_reference(image->region->bo);
 684     image->region->tiling = parent->region->tiling;
 685     image->offset = offset;
 686     intel_setup_image_from_dimensions(image);
 687
 688     intel_region_get_tile_masks(image->region, &mask_x, &mask_y);
 689     if (offset & mask_x)
 690        _mesa_warning(NULL,
 691                      "intel_create_sub_image: offset not on tile boundary");
 692
 693     return image;
 694 }
 695
 696 static const __DRIimageExtension intelImageExtension = {
 697     .base = { __DRI_IMAGE, 7 },
 698
 699     .createImageFromName                = intel_create_image_from_name,
 700     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 701     .destroyImage                       = intel_destroy_image,
 702     .createImage                        = intel_create_image,
 703     .queryImage                         = intel_query_image,
 704     .dupImage                           = intel_dup_image,
 705     .validateUsage                      = intel_validate_usage,
 706     .createImageFromNames               = intel_create_image_from_names,
 707     .fromPlanar                         = intel_from_planar,
 708     .createImageFromTexture             = intel_create_image_from_texture,
 709     .createImageFromFds                 = intel_create_image_from_fds
 710 };
 711
 712 static int
 713 i915_query_renderer_integer(__DRIscreen *psp, int param, unsigned int *value)
 714 {
 715    const struct intel_screen *const intelScreen =
 716       (struct intel_screen *) psp->driverPrivate;
 717
 718    switch (param) {
 719    case __DRI2_RENDERER_VENDOR_ID:
 720       value[0] = 0x8086;
 721       return 0;
 722    case __DRI2_RENDERER_DEVICE_ID:
 723       value[0] = intelScreen->deviceID;
 724       return 0;
 725    case __DRI2_RENDERER_ACCELERATED:
 726       value[0] = 1;
 727       return 0;
 728    case __DRI2_RENDERER_VIDEO_MEMORY: {
 729       /* Once a batch uses more than 75% of the maximum mappable size, we
 730        * assume that there's some fragmentation, and we start doing extra
 731        * flushing, etc.  That's the big cliff apps will care about.
 732        */
 733       size_t aper_size;
 734       size_t mappable_size;
 735
 736       drm_intel_get_aperture_sizes(psp->fd, &mappable_size, &aper_size);
 737
 738       const unsigned gpu_mappable_megabytes =
 739          (aper_size / (1024 * 1024)) * 3 / 4;
 740
 741       const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
 742       const long system_page_size = sysconf(_SC_PAGE_SIZE);
 743
 744       if (system_memory_pages <= 0 || system_page_size <= 0)
 745          return -1;
 746
 747       const uint64_t system_memory_bytes = (uint64_t) system_memory_pages
 748          * (uint64_t) system_page_size;
 749
 750       const unsigned system_memory_megabytes =
 751          (unsigned) (system_memory_bytes / (1024 * 1024));
 752
 753       value[0] = MIN2(system_memory_megabytes, gpu_mappable_megabytes);
 754       return 0;
 755    }
 756    case __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE:
 757       value[0] = 1;
 758       return 0;
 759    case __DRI2_RENDERER_HAS_TEXTURE_3D:
 760       value[0] = 1;
 761       return 0;
 762    default:
 763       return driQueryRendererIntegerCommon(psp, param, value);
 764    }
 765
 766    return -1;
 767 }
 768
 769 static int
 770 i915_query_renderer_string(__DRIscreen *psp, int param, const char **value)
 771 {
 772    const struct intel_screen *intelScreen =
 773       (struct intel_screen *) psp->driverPrivate;
 774
 775    switch (param) {
 776    case __DRI2_RENDERER_VENDOR_ID:
 777       value[0] = i915_vendor_string;
 778       return 0;
 779    case __DRI2_RENDERER_DEVICE_ID:
 780       value[0] = i915_get_renderer_string(intelScreen->deviceID);
 781       return 0;
 782    default:
 783       break;
 784    }
 785
 786    return -1;
 787 }
 788
 789 static const __DRI2rendererQueryExtension intelRendererQueryExtension = {
 790    .base = { __DRI2_RENDERER_QUERY, 1 },
 791
 792    .queryInteger = i915_query_renderer_integer,
 793    .queryString = i915_query_renderer_string
 794 };
 795
 796 static const __DRIextension *intelScreenExtensions[] = {
 797     &intelTexBufferExtension.base,
 798     &intelFenceExtension.base,
 799     &intelFlushExtension.base,
 800     &intelImageExtension.base,
 801     &intelRendererQueryExtension.base,
 802     &dri2ConfigQueryExtension.base,
 803     &dri2NoErrorExtension.base,
 804     NULL
 805 };
 806
 807 static bool
 808 intel_get_param(__DRIscreen *psp, int param, int *value)
 809 {
 810    int ret;
 811    struct drm_i915_getparam gp;
 812
 813    memset(&gp, 0, sizeof(gp));
 814    gp.param = param;
 815    gp.value = value;
 816
 817    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 818    if (ret) {
 819       if (ret != -EINVAL)
 820          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 821       return false;
 822    }
 823
 824    return true;
 825 }
 826
 827 static bool
 828 intel_get_boolean(__DRIscreen *psp, int param)
 829 {
 830    int value = 0;
 831    return intel_get_param(psp, param, &value) && value;
 832 }
 833
 834 static void
 835 intelDestroyScreen(__DRIscreen * sPriv)
 836 {
 837    struct intel_screen *intelScreen = sPriv->driverPrivate;
 838
 839    dri_bufmgr_destroy(intelScreen->bufmgr);
 840    driDestroyOptionInfo(&intelScreen->optionCache);
 841
 842    free(intelScreen);
 843    sPriv->driverPrivate = NULL;
 844 }
 845
 846
 847 /**
 848  * This is called when we need to set up GL rendering to a new X window.
 849  */
 850 static GLboolean
 851 intelCreateBuffer(__DRIscreen * driScrnPriv,
 852                   __DRIdrawable * driDrawPriv,
 853                   const struct gl_config * mesaVis, GLboolean isPixmap)
 854 {
 855    struct intel_renderbuffer *rb;
 856    mesa_format rgbFormat;
 857    struct gl_framebuffer *fb;
 858
 859    if (isPixmap)
 860       return false;
 861
 862    fb = CALLOC_STRUCT(gl_framebuffer);
 863    if (!fb)
 864       return false;
 865
 866    _mesa_initialize_window_framebuffer(fb, mesaVis);
 867
 868    if (mesaVis->redBits == 5)
 869       rgbFormat = MESA_FORMAT_B5G6R5_UNORM;
 870    else if (mesaVis->sRGBCapable)
 871       rgbFormat = MESA_FORMAT_B8G8R8A8_SRGB;
 872    else if (mesaVis->alphaBits == 0)
 873       rgbFormat = MESA_FORMAT_B8G8R8X8_UNORM;
 874    else
 875       rgbFormat = MESA_FORMAT_B8G8R8A8_UNORM;
 876
 877    /* setup the hardware-based renderbuffers */
 878    rb = intel_create_renderbuffer(rgbFormat);
 879    _mesa_attach_and_own_rb(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 880
 881    if (mesaVis->doubleBufferMode) {
 882       rb = intel_create_renderbuffer(rgbFormat);
 883       _mesa_attach_and_own_rb(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 884    }
 885
 886    /*
 887     * Assert here that the gl_config has an expected depth/stencil bit
 888     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 889     * which constructs the advertised configs.)
 890     */
 891    if (mesaVis->depthBits == 24) {
 892       assert(mesaVis->stencilBits == 8);
 893
 894       /*
 895        * Use combined depth/stencil. Note that the renderbuffer is
 896        * attached to two attachment points.
 897        */
 898       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z24_UNORM_S8_UINT);
 899       _mesa_attach_and_own_rb(fb, BUFFER_DEPTH, &rb->Base.Base);
 900       _mesa_attach_and_reference_rb(fb, BUFFER_STENCIL, &rb->Base.Base);
 901    }
 902    else if (mesaVis->depthBits == 16) {
 903       assert(mesaVis->stencilBits == 0);
 904       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z_UNORM16);
 905       _mesa_attach_and_own_rb(fb, BUFFER_DEPTH, &rb->Base.Base);
 906    }
 907    else {
 908       assert(mesaVis->depthBits == 0);
 909       assert(mesaVis->stencilBits == 0);
 910    }
 911
 912    /* now add any/all software-based renderbuffers we may need */
 913    _swrast_add_soft_renderbuffers(fb,
 914                                   false, /* never sw color */
 915                                   false, /* never sw depth */
 916                                   false, /* never sw stencil */
 917                                   mesaVis->accumRedBits > 0,
 918                                   false, /* never sw alpha */
 919                                   false  /* never sw aux */ );
 920    driDrawPriv->driverPrivate = fb;
 921
 922    return true;
 923 }
 924
 925 static void
 926 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 927 {
 928     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 929
 930     _mesa_reference_framebuffer(&fb, NULL);
 931 }
 932
 933 /* There are probably better ways to do this, such as an
 934  * init-designated function to register chipids and createcontext
 935  * functions.
 936  */
 937 extern bool
 938 i830CreateContext(int api,
 939                   const struct gl_config *mesaVis,
 940                   __DRIcontext *driContextPriv,
 941                   unsigned major_version,
 942                   unsigned minor_version,
 943                   uint32_t flags,
 944                   unsigned *error,
 945                   void *sharedContextPrivate);
 946
 947 extern bool
 948 i915CreateContext(int api,
 949                   const struct gl_config *mesaVis,
 950                   __DRIcontext *driContextPriv,
 951                   unsigned major_version,
 952                   unsigned minor_version,
 953                   uint32_t flags,
 954                   unsigned *error,
 955                   void *sharedContextPrivate);
 956
 957 static GLboolean
 958 intelCreateContext(gl_api api,
 959                    const struct gl_config * mesaVis,
 960                    __DRIcontext * driContextPriv,
 961                    const struct __DriverContextConfig *ctx_config,
 962                    unsigned *error,
 963                    void *sharedContextPrivate)
 964 {
 965    bool success = false;
 966
 967    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 968    struct intel_screen *intelScreen = sPriv->driverPrivate;
 969
 970    if (ctx_config->flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_NO_ERROR)) {
 971       *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
 972       return false;
 973    }
 974
 975    if (ctx_config->attribute_mask) {
 976       *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
 977       return false;
 978    }
 979
 980    if (IS_GEN3(intelScreen->deviceID)) {
 981       success = i915CreateContext(api, mesaVis, driContextPriv,
 982                                   ctx_config->major_version,
 983                                   ctx_config->minor_version,
 984                                   ctx_config->flags,
 985                                   error, sharedContextPrivate);
 986    } else {
 987       intelScreen->no_vbo = true;
 988       success = i830CreateContext(api, mesaVis, driContextPriv,
 989                                   ctx_config->major_version,
 990                                   ctx_config->minor_version,
 991                                   ctx_config->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 }