src/mesa/drivers/dri/i965/intel_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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 "main/glheader.h"
  31 #include "main/context.h"
  32 #include "main/framebuffer.h"
  33 #include "main/renderbuffer.h"
  34 #include "main/texobj.h"
  35 #include "main/hash.h"
  36 #include "main/fbobject.h"
  37 #include "main/version.h"
  38 #include "swrast/s_renderbuffer.h"
  39
  40 #include "utils.h"
  41 #include "xmlpool.h"
  42
  43 PUBLIC const char __driConfigOptions[] =
  44    DRI_CONF_BEGIN
  45    DRI_CONF_SECTION_PERFORMANCE
  46       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  47       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  48        * DRI_CONF_BO_REUSE_ALL
  49        */
  50       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  51          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  52             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  53             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  54          DRI_CONF_DESC_END
  55       DRI_CONF_OPT_END
  56
  57       DRI_CONF_OPT_BEGIN_B(hiz, "true")
  58          DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
  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_SECTION_END
  66    DRI_CONF_SECTION_QUALITY
  67       DRI_CONF_FORCE_S3TC_ENABLE("false")
  68       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  69    DRI_CONF_SECTION_END
  70    DRI_CONF_SECTION_DEBUG
  71       DRI_CONF_NO_RAST("false")
  72       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  73       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  74       DRI_CONF_DISABLE_THROTTLING("false")
  75       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  76       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  77       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  78
  79       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  80          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  81       DRI_CONF_OPT_END
  82    DRI_CONF_SECTION_END
  83 DRI_CONF_END;
  84
  85 const GLuint __driNConfigOptions = 14;
  86
  87 #include "intel_batchbuffer.h"
  88 #include "intel_buffers.h"
  89 #include "intel_bufmgr.h"
  90 #include "intel_chipset.h"
  91 #include "intel_fbo.h"
  92 #include "intel_mipmap_tree.h"
  93 #include "intel_screen.h"
  94 #include "intel_tex.h"
  95 #include "intel_regions.h"
  96
  97 #ifndef I915
  98 #include "brw_context.h"
  99 #endif
 100
 101 #include "i915_drm.h"
 102
 103 #ifdef USE_NEW_INTERFACE
 104 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 105 #endif /*USE_NEW_INTERFACE */
 106
 107 /**
 108  * For debugging purposes, this returns a time in seconds.
 109  */
 110 double
 111 get_time(void)
 112 {
 113    struct timespec tp;
 114
 115    clock_gettime(CLOCK_MONOTONIC, &tp);
 116
 117    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 118 }
 119
 120 void
 121 aub_dump_bmp(struct gl_context *ctx)
 122 {
 123    struct gl_framebuffer *fb = ctx->DrawBuffer;
 124
 125    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 126       struct intel_renderbuffer *irb =
 127          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 128
 129       if (irb && irb->mt) {
 130          enum aub_dump_bmp_format format;
 131
 132          switch (irb->Base.Base.Format) {
 133          case MESA_FORMAT_ARGB8888:
 134          case MESA_FORMAT_XRGB8888:
 135             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 136             break;
 137          default:
 138             continue;
 139          }
 140
 141          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 142          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 143                                        irb->draw_x,
 144                                        irb->draw_y,
 145                                        irb->Base.Base.Width,
 146                                        irb->Base.Base.Height,
 147                                        format,
 148                                        irb->mt->region->pitch,
 149                                        0);
 150       }
 151    }
 152 }
 153
 154 static const __DRItexBufferExtension intelTexBufferExtension = {
 155    .base = { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 156
 157    .setTexBuffer        = intelSetTexBuffer,
 158    .setTexBuffer2       = intelSetTexBuffer2,
 159    .releaseTexBuffer    = NULL,
 160 };
 161
 162 static void
 163 intelDRI2Flush(__DRIdrawable *drawable)
 164 {
 165    GET_CURRENT_CONTEXT(ctx);
 166    struct intel_context *intel = intel_context(ctx);
 167    if (intel == NULL)
 168       return;
 169
 170    if (intel->gen < 4)
 171       INTEL_FIREVERTICES(intel);
 172
 173    intel_resolve_for_dri2_flush(intel, drawable);
 174    intel->need_throttle = true;
 175
 176    if (intel->batch.used)
 177       intel_batchbuffer_flush(intel);
 178
 179    if (INTEL_DEBUG & DEBUG_AUB) {
 180       aub_dump_bmp(ctx);
 181    }
 182 }
 183
 184 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 185     .base = { __DRI2_FLUSH, 3 },
 186
 187     .flush              = intelDRI2Flush,
 188     .invalidate         = dri2InvalidateDrawable,
 189 };
 190
 191 static struct intel_image_format intel_image_formats[] = {
 192    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 193      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 194
 195    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 196      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 197
 198    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 199      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 200        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 201        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 202
 203    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 204      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 205        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 206        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 207
 208    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 209      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 210        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 211        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 212
 213    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 214      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 215        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 216        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 217
 218    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 219      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 220        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 221        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 222
 223    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 224      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 225        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 226
 227    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 228      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 229        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 230
 231    /* For YUYV buffers, we set up two overlapping DRI images and treat
 232     * them as planar buffers in the compositors.  Plane 0 is GR88 and
 233     * samples YU or YV pairs and places Y into the R component, while
 234     * plane 1 is ARGB and samples YUYV clusters and places pairs and
 235     * places U into the G component and V into A.  This lets the
 236     * texture sampler interpolate the Y components correctly when
 237     * sampling from plane 0, and interpolate U and V correctly when
 238     * sampling from plane 1. */
 239    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 240      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 241        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 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     switch (dri_format) {
 257     case __DRI_IMAGE_FORMAT_RGB565:
 258        image->format = MESA_FORMAT_RGB565;
 259        break;
 260     case __DRI_IMAGE_FORMAT_XRGB8888:
 261        image->format = MESA_FORMAT_XRGB8888;
 262        break;
 263     case __DRI_IMAGE_FORMAT_ARGB8888:
 264        image->format = MESA_FORMAT_ARGB8888;
 265        break;
 266     case __DRI_IMAGE_FORMAT_ABGR8888:
 267        image->format = MESA_FORMAT_RGBA8888_REV;
 268        break;
 269     case __DRI_IMAGE_FORMAT_XBGR8888:
 270        image->format = MESA_FORMAT_RGBX8888_REV;
 271        break;
 272     case __DRI_IMAGE_FORMAT_R8:
 273        image->format = MESA_FORMAT_R8;
 274        break;
 275     case __DRI_IMAGE_FORMAT_GR88:
 276        image->format = MESA_FORMAT_GR88;
 277        break;
 278     case __DRI_IMAGE_FORMAT_NONE:
 279        image->format = MESA_FORMAT_NONE;
 280        break;
 281     default:
 282        free(image);
 283        return NULL;
 284     }
 285
 286     image->internal_format = _mesa_get_format_base_format(image->format);
 287     image->data = loaderPrivate;
 288
 289     return image;
 290 }
 291
 292 /**
 293  * Sets up a DRIImage structure to point to our shared image in a region
 294  */
 295 static void
 296 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 297                                    struct intel_mipmap_tree *mt, GLuint level,
 298                                    GLuint zoffset)
 299 {
 300    unsigned int draw_x, draw_y;
 301    uint32_t mask_x, mask_y;
 302
 303    intel_miptree_make_shareable(intel, mt);
 304
 305    intel_miptree_check_level_layer(mt, level, zoffset);
 306
 307    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 308    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 309
 310    image->width = mt->level[level].width;
 311    image->height = mt->level[level].height;
 312    image->tile_x = draw_x & mask_x;
 313    image->tile_y = draw_y & mask_y;
 314
 315    image->offset = intel_region_get_aligned_offset(mt->region,
 316                                                    draw_x & ~mask_x,
 317                                                    draw_y & ~mask_y,
 318                                                    false);
 319
 320    intel_region_reference(&image->region, mt->region);
 321 }
 322
 323 static void
 324 intel_setup_image_from_dimensions(__DRIimage *image)
 325 {
 326    image->width    = image->region->width;
 327    image->height   = image->region->height;
 328    image->tile_x = 0;
 329    image->tile_y = 0;
 330    image->has_depthstencil = false;
 331 }
 332
 333 static inline uint32_t
 334 intel_dri_format(GLuint format)
 335 {
 336    switch (format) {
 337    case MESA_FORMAT_RGB565:
 338       return __DRI_IMAGE_FORMAT_RGB565;
 339    case MESA_FORMAT_XRGB8888:
 340       return __DRI_IMAGE_FORMAT_XRGB8888;
 341    case MESA_FORMAT_ARGB8888:
 342       return __DRI_IMAGE_FORMAT_ARGB8888;
 343    case MESA_FORMAT_RGBA8888_REV:
 344       return __DRI_IMAGE_FORMAT_ABGR8888;
 345    case MESA_FORMAT_R8:
 346       return __DRI_IMAGE_FORMAT_R8;
 347    case MESA_FORMAT_RG88:
 348       return __DRI_IMAGE_FORMAT_GR88;
 349    }
 350
 351    return MESA_FORMAT_NONE;
 352 }
 353
 354 static __DRIimage *
 355 intel_create_image_from_name(__DRIscreen *screen,
 356                              int width, int height, int format,
 357                              int name, int pitch, void *loaderPrivate)
 358 {
 359     struct intel_screen *intelScreen = screen->driverPrivate;
 360     __DRIimage *image;
 361     int cpp;
 362
 363     image = intel_allocate_image(format, loaderPrivate);
 364     if (image == NULL)
 365        return NULL;
 366
 367     if (image->format == MESA_FORMAT_NONE)
 368        cpp = 1;
 369     else
 370        cpp = _mesa_get_format_bytes(image->format);
 371     image->region = intel_region_alloc_for_handle(intelScreen,
 372                                                   cpp, width, height,
 373                                                   pitch * cpp, name, "image");
 374     if (image->region == NULL) {
 375        free(image);
 376        return NULL;
 377     }
 378
 379     intel_setup_image_from_dimensions(image);
 380
 381     return image;
 382 }
 383
 384 static __DRIimage *
 385 intel_create_image_from_renderbuffer(__DRIcontext *context,
 386                                      int renderbuffer, void *loaderPrivate)
 387 {
 388    __DRIimage *image;
 389    struct intel_context *intel = context->driverPrivate;
 390    struct gl_renderbuffer *rb;
 391    struct intel_renderbuffer *irb;
 392
 393    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 394    if (!rb) {
 395       _mesa_error(&intel->ctx,
 396                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 397       return NULL;
 398    }
 399
 400    irb = intel_renderbuffer(rb);
 401    intel_miptree_make_shareable(intel, irb->mt);
 402    image = calloc(1, sizeof *image);
 403    if (image == NULL)
 404       return NULL;
 405
 406    image->internal_format = rb->InternalFormat;
 407    image->format = rb->Format;
 408    image->offset = 0;
 409    image->data = loaderPrivate;
 410    intel_region_reference(&image->region, irb->mt->region);
 411    intel_setup_image_from_dimensions(image);
 412    image->dri_format = intel_dri_format(image->format);
 413    image->has_depthstencil = irb->mt->stencil_mt? true : false;
 414
 415    rb->NeedsFinishRenderTexture = true;
 416    return image;
 417 }
 418
 419 static __DRIimage *
 420 intel_create_image_from_texture(__DRIcontext *context, int target,
 421                                 unsigned texture, int zoffset,
 422                                 int level,
 423                                 unsigned *error,
 424                                 void *loaderPrivate)
 425 {
 426    __DRIimage *image;
 427    struct intel_context *intel = context->driverPrivate;
 428    struct gl_texture_object *obj;
 429    struct intel_texture_object *iobj;
 430    GLuint face = 0;
 431
 432    obj = _mesa_lookup_texture(&intel->ctx, texture);
 433    if (!obj || obj->Target != target) {
 434       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 435       return NULL;
 436    }
 437
 438    if (target == GL_TEXTURE_CUBE_MAP)
 439       face = zoffset;
 440
 441    _mesa_test_texobj_completeness(&intel->ctx, obj);
 442    iobj = intel_texture_object(obj);
 443    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 444       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 445       return NULL;
 446    }
 447
 448    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 449       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 450       return NULL;
 451    }
 452
 453    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 454       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 455       return NULL;
 456    }
 457    image = calloc(1, sizeof *image);
 458    if (image == NULL) {
 459       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 460       return NULL;
 461    }
 462
 463    image->internal_format = obj->Image[face][level]->InternalFormat;
 464    image->format = obj->Image[face][level]->TexFormat;
 465    image->data = loaderPrivate;
 466    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 467    image->dri_format = intel_dri_format(image->format);
 468    image->has_depthstencil = iobj->mt->stencil_mt? true : false;
 469    if (image->dri_format == MESA_FORMAT_NONE) {
 470       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 471       free(image);
 472       return NULL;
 473    }
 474
 475    *error = __DRI_IMAGE_ERROR_SUCCESS;
 476    return image;
 477 }
 478
 479 static void
 480 intel_destroy_image(__DRIimage *image)
 481 {
 482     intel_region_release(&image->region);
 483     free(image);
 484 }
 485
 486 static __DRIimage *
 487 intel_create_image(__DRIscreen *screen,
 488                    int width, int height, int format,
 489                    unsigned int use,
 490                    void *loaderPrivate)
 491 {
 492    __DRIimage *image;
 493    struct intel_screen *intelScreen = screen->driverPrivate;
 494    uint32_t tiling;
 495    int cpp;
 496
 497    tiling = I915_TILING_X;
 498    if (use & __DRI_IMAGE_USE_CURSOR) {
 499       if (width != 64 || height != 64)
 500          return NULL;
 501       tiling = I915_TILING_NONE;
 502    }
 503
 504    image = intel_allocate_image(format, loaderPrivate);
 505    if (image == NULL)
 506       return NULL;
 507
 508    cpp = _mesa_get_format_bytes(image->format);
 509    image->region =
 510       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 511    if (image->region == NULL) {
 512       free(image);
 513       return NULL;
 514    }
 515
 516    intel_setup_image_from_dimensions(image);
 517
 518    return image;
 519 }
 520
 521 static GLboolean
 522 intel_query_image(__DRIimage *image, int attrib, int *value)
 523 {
 524    switch (attrib) {
 525    case __DRI_IMAGE_ATTRIB_STRIDE:
 526       *value = image->region->pitch;
 527       return true;
 528    case __DRI_IMAGE_ATTRIB_HANDLE:
 529       *value = image->region->bo->handle;
 530       return true;
 531    case __DRI_IMAGE_ATTRIB_NAME:
 532       return intel_region_flink(image->region, (uint32_t *) value);
 533    case __DRI_IMAGE_ATTRIB_FORMAT:
 534       *value = image->dri_format;
 535       return true;
 536    case __DRI_IMAGE_ATTRIB_WIDTH:
 537       *value = image->region->width;
 538       return true;
 539    case __DRI_IMAGE_ATTRIB_HEIGHT:
 540       *value = image->region->height;
 541       return true;
 542    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 543       if (image->planar_format == NULL)
 544          return false;
 545       *value = image->planar_format->components;
 546       return true;
 547    case __DRI_IMAGE_ATTRIB_FD:
 548       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 549          return true;
 550       return false;
 551   default:
 552       return false;
 553    }
 554 }
 555
 556 static __DRIimage *
 557 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 558 {
 559    __DRIimage *image;
 560
 561    image = calloc(1, sizeof *image);
 562    if (image == NULL)
 563       return NULL;
 564
 565    intel_region_reference(&image->region, orig_image->region);
 566    if (image->region == NULL) {
 567       free(image);
 568       return NULL;
 569    }
 570
 571    image->internal_format = orig_image->internal_format;
 572    image->planar_format   = orig_image->planar_format;
 573    image->dri_format      = orig_image->dri_format;
 574    image->format          = orig_image->format;
 575    image->offset          = orig_image->offset;
 576    image->width           = orig_image->width;
 577    image->height          = orig_image->height;
 578    image->tile_x          = orig_image->tile_x;
 579    image->tile_y          = orig_image->tile_y;
 580    image->has_depthstencil = orig_image->has_depthstencil;
 581    image->data            = loaderPrivate;
 582
 583    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 584    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 585
 586    return image;
 587 }
 588
 589 static GLboolean
 590 intel_validate_usage(__DRIimage *image, unsigned int use)
 591 {
 592    if (use & __DRI_IMAGE_USE_CURSOR) {
 593       if (image->region->width != 64 || image->region->height != 64)
 594          return GL_FALSE;
 595    }
 596
 597    return GL_TRUE;
 598 }
 599
 600 static __DRIimage *
 601 intel_create_image_from_names(__DRIscreen *screen,
 602                               int width, int height, int fourcc,
 603                               int *names, int num_names,
 604                               int *strides, int *offsets,
 605                               void *loaderPrivate)
 606 {
 607     struct intel_image_format *f = NULL;
 608     __DRIimage *image;
 609     int i, index;
 610
 611     if (screen == NULL || names == NULL || num_names != 1)
 612         return NULL;
 613
 614     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 615         if (intel_image_formats[i].fourcc == fourcc) {
 616            f = &intel_image_formats[i];
 617         }
 618     }
 619
 620     if (f == NULL)
 621         return NULL;
 622
 623     image = intel_create_image_from_name(screen, width, height,
 624                                          __DRI_IMAGE_FORMAT_NONE,
 625                                          names[0], strides[0],
 626                                          loaderPrivate);
 627
 628    if (image == NULL)
 629       return NULL;
 630
 631     image->planar_format = f;
 632     for (i = 0; i < f->nplanes; i++) {
 633         index = f->planes[i].buffer_index;
 634         image->offsets[index] = offsets[index];
 635         image->strides[index] = strides[index];
 636     }
 637
 638     return image;
 639 }
 640
 641 static __DRIimage *
 642 intel_create_image_from_fds(__DRIscreen *screen,
 643                             int width, int height, int fourcc,
 644                             int *fds, int num_fds, int *strides, int *offsets,
 645                             void *loaderPrivate)
 646 {
 647    struct intel_screen *intelScreen = screen->driverPrivate;
 648    struct intel_image_format *f = NULL;
 649    __DRIimage *image;
 650    int i, index;
 651
 652    if (fds == NULL || num_fds != 1)
 653       return NULL;
 654
 655    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 656       if (intel_image_formats[i].fourcc == fourcc) {
 657          f = &intel_image_formats[i];
 658       }
 659    }
 660
 661    if (f == NULL)
 662       return NULL;
 663
 664    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 665    if (image == NULL)
 666       return NULL;
 667
 668    image->region = intel_region_alloc_for_fd(intelScreen,
 669                                              1, width, height,
 670                                              strides[0], fds[0], "image");
 671    if (image->region == NULL) {
 672       free(image);
 673       return NULL;
 674    }
 675
 676    image->planar_format = f;
 677    for (i = 0; i < f->nplanes; i++) {
 678       index = f->planes[i].buffer_index;
 679       image->offsets[index] = offsets[index];
 680       image->strides[index] = strides[index];
 681    }
 682
 683    return image;
 684 }
 685
 686
 687 static __DRIimage *
 688 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 689 {
 690     int width, height, offset, stride, dri_format, index;
 691     struct intel_image_format *f;
 692     uint32_t mask_x, mask_y;
 693     __DRIimage *image;
 694
 695     if (parent == NULL || parent->planar_format == NULL)
 696         return NULL;
 697
 698     f = parent->planar_format;
 699
 700     if (plane >= f->nplanes)
 701         return NULL;
 702
 703     width = parent->region->width >> f->planes[plane].width_shift;
 704     height = parent->region->height >> f->planes[plane].height_shift;
 705     dri_format = f->planes[plane].dri_format;
 706     index = f->planes[plane].buffer_index;
 707     offset = parent->offsets[index];
 708     stride = parent->strides[index];
 709
 710     image = intel_allocate_image(dri_format, loaderPrivate);
 711     if (image == NULL)
 712        return NULL;
 713
 714     if (offset + height * stride > parent->region->bo->size) {
 715        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 716        free(image);
 717        return NULL;
 718     }
 719
 720     image->region = calloc(sizeof(*image->region), 1);
 721     if (image->region == NULL) {
 722        free(image);
 723        return NULL;
 724     }
 725
 726     image->region->cpp = _mesa_get_format_bytes(image->format);
 727     image->region->width = width;
 728     image->region->height = height;
 729     image->region->pitch = stride;
 730     image->region->refcount = 1;
 731     image->region->bo = parent->region->bo;
 732     drm_intel_bo_reference(image->region->bo);
 733     image->region->tiling = parent->region->tiling;
 734     image->offset = offset;
 735     intel_setup_image_from_dimensions(image);
 736
 737     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 738     if (offset & mask_x)
 739        _mesa_warning(NULL,
 740                      "intel_create_sub_image: offset not on tile boundary");
 741
 742     return image;
 743 }
 744
 745 static struct __DRIimageExtensionRec intelImageExtension = {
 746     .base = { __DRI_IMAGE, 7 },
 747
 748     .createImageFromName                = intel_create_image_from_name,
 749     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 750     .destroyImage                       = intel_destroy_image,
 751     .createImage                        = intel_create_image,
 752     .queryImage                         = intel_query_image,
 753     .dupImage                           = intel_dup_image,
 754     .validateUsage                      = intel_validate_usage,
 755     .createImageFromNames               = intel_create_image_from_names,
 756     .fromPlanar                         = intel_from_planar,
 757     .createImageFromTexture             = intel_create_image_from_texture,
 758     .createImageFromFds                 = intel_create_image_from_fds
 759 };
 760
 761 static const __DRIextension *intelScreenExtensions[] = {
 762     &intelTexBufferExtension.base,
 763     &intelFlushExtension.base,
 764     &intelImageExtension.base,
 765     &dri2ConfigQueryExtension.base,
 766     NULL
 767 };
 768
 769 static bool
 770 intel_get_param(__DRIscreen *psp, int param, int *value)
 771 {
 772    int ret;
 773    struct drm_i915_getparam gp;
 774
 775    memset(&gp, 0, sizeof(gp));
 776    gp.param = param;
 777    gp.value = value;
 778
 779    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 780    if (ret) {
 781       if (ret != -EINVAL)
 782          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 783       return false;
 784    }
 785
 786    return true;
 787 }
 788
 789 static bool
 790 intel_get_boolean(__DRIscreen *psp, int param)
 791 {
 792    int value = 0;
 793    return intel_get_param(psp, param, &value) && value;
 794 }
 795
 796 static void
 797 intelDestroyScreen(__DRIscreen * sPriv)
 798 {
 799    struct intel_screen *intelScreen = sPriv->driverPrivate;
 800
 801    dri_bufmgr_destroy(intelScreen->bufmgr);
 802    driDestroyOptionInfo(&intelScreen->optionCache);
 803
 804    free(intelScreen);
 805    sPriv->driverPrivate = NULL;
 806 }
 807
 808
 809 /**
 810  * This is called when we need to set up GL rendering to a new X window.
 811  */
 812 static GLboolean
 813 intelCreateBuffer(__DRIscreen * driScrnPriv,
 814                   __DRIdrawable * driDrawPriv,
 815                   const struct gl_config * mesaVis, GLboolean isPixmap)
 816 {
 817    struct intel_renderbuffer *rb;
 818    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 819    gl_format rgbFormat;
 820    unsigned num_samples = intel_quantize_num_samples(screen, mesaVis->samples);
 821    struct gl_framebuffer *fb;
 822
 823    if (isPixmap)
 824       return false;
 825
 826    fb = CALLOC_STRUCT(gl_framebuffer);
 827    if (!fb)
 828       return false;
 829
 830    _mesa_initialize_window_framebuffer(fb, mesaVis);
 831
 832    if (mesaVis->redBits == 5)
 833       rgbFormat = MESA_FORMAT_RGB565;
 834    else if (mesaVis->sRGBCapable)
 835       rgbFormat = MESA_FORMAT_SARGB8;
 836    else if (mesaVis->alphaBits == 0)
 837       rgbFormat = MESA_FORMAT_XRGB8888;
 838    else {
 839       if (screen->gen >= 4) {
 840          rgbFormat = MESA_FORMAT_SARGB8;
 841          fb->Visual.sRGBCapable = true;
 842       } else {
 843          rgbFormat = MESA_FORMAT_ARGB8888;
 844       }
 845
 846    }
 847
 848    /* setup the hardware-based renderbuffers */
 849    rb = intel_create_renderbuffer(rgbFormat, num_samples);
 850    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 851
 852    if (mesaVis->doubleBufferMode) {
 853       rb = intel_create_renderbuffer(rgbFormat, num_samples);
 854       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 855    }
 856
 857    /*
 858     * Assert here that the gl_config has an expected depth/stencil bit
 859     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 860     * which constructs the advertised configs.)
 861     */
 862    if (mesaVis->depthBits == 24) {
 863       assert(mesaVis->stencilBits == 8);
 864
 865       if (screen->hw_has_separate_stencil) {
 866          rb = intel_create_private_renderbuffer(MESA_FORMAT_X8_Z24,
 867                                                 num_samples);
 868          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 869          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8,
 870                                                 num_samples);
 871          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 872       } else {
 873          /*
 874           * Use combined depth/stencil. Note that the renderbuffer is
 875           * attached to two attachment points.
 876           */
 877          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24,
 878                                                 num_samples);
 879          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 880          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 881       }
 882    }
 883    else if (mesaVis->depthBits == 16) {
 884       assert(mesaVis->stencilBits == 0);
 885       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16,
 886                                              num_samples);
 887       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 888    }
 889    else {
 890       assert(mesaVis->depthBits == 0);
 891       assert(mesaVis->stencilBits == 0);
 892    }
 893
 894    /* now add any/all software-based renderbuffers we may need */
 895    _swrast_add_soft_renderbuffers(fb,
 896                                   false, /* never sw color */
 897                                   false, /* never sw depth */
 898                                   false, /* never sw stencil */
 899                                   mesaVis->accumRedBits > 0,
 900                                   false, /* never sw alpha */
 901                                   false  /* never sw aux */ );
 902    driDrawPriv->driverPrivate = fb;
 903
 904    return true;
 905 }
 906
 907 static void
 908 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 909 {
 910     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 911
 912     _mesa_reference_framebuffer(&fb, NULL);
 913 }
 914
 915 /* There are probably better ways to do this, such as an
 916  * init-designated function to register chipids and createcontext
 917  * functions.
 918  */
 919 extern bool
 920 i830CreateContext(int api,
 921                   const struct gl_config *mesaVis,
 922                   __DRIcontext *driContextPriv,
 923                   unsigned major_version,
 924                   unsigned minor_version,
 925                   unsigned *error,
 926                   void *sharedContextPrivate);
 927
 928 extern bool
 929 i915CreateContext(int api,
 930                   const struct gl_config *mesaVis,
 931                   __DRIcontext *driContextPriv,
 932                   unsigned major_version,
 933                   unsigned minor_version,
 934                   unsigned *error,
 935                   void *sharedContextPrivate);
 936 extern bool
 937 brwCreateContext(int api,
 938                  const struct gl_config *mesaVis,
 939                  __DRIcontext *driContextPriv,
 940                  unsigned major_version,
 941                  unsigned minor_version,
 942                  uint32_t flags,
 943                  unsigned *error,
 944                  void *sharedContextPrivate);
 945
 946 static GLboolean
 947 intelCreateContext(gl_api api,
 948                    const struct gl_config * mesaVis,
 949                    __DRIcontext * driContextPriv,
 950                    unsigned major_version,
 951                    unsigned minor_version,
 952                    uint32_t flags,
 953                    unsigned *error,
 954                    void *sharedContextPrivate)
 955 {
 956    bool success = false;
 957
 958 #ifdef I915
 959    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 960    struct intel_screen *intelScreen = sPriv->driverPrivate;
 961
 962    if (IS_9XX(intelScreen->deviceID)) {
 963       success = i915CreateContext(api, mesaVis, driContextPriv,
 964                                   major_version, minor_version, error,
 965                                   sharedContextPrivate);
 966    } else {
 967       intelScreen->no_vbo = true;
 968       success = i830CreateContext(api, mesaVis, driContextPriv,
 969                                   major_version, minor_version, error,
 970                                   sharedContextPrivate);
 971    }
 972 #else
 973    success = brwCreateContext(api, mesaVis,
 974                               driContextPriv,
 975                               major_version, minor_version, flags,
 976                               error, sharedContextPrivate);
 977 #endif
 978
 979    if (success)
 980       return true;
 981
 982    if (driContextPriv->driverPrivate != NULL)
 983       intelDestroyContext(driContextPriv);
 984
 985    return false;
 986 }
 987
 988 static bool
 989 intel_init_bufmgr(struct intel_screen *intelScreen)
 990 {
 991    __DRIscreen *spriv = intelScreen->driScrnPriv;
 992
 993    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 994
 995    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 996    if (intelScreen->bufmgr == NULL) {
 997       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 998               __func__, __LINE__);
 999       return false;
1000    }
1001
1002    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
1003
1004    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
1005       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
1006       return false;
1007    }
1008
1009    return true;
1010 }
1011
1012 /**
1013  * Override intel_screen.hw_has_separate_stencil with environment variable
1014  * INTEL_SEPARATE_STENCIL.
1015  *
1016  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
1017  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
1018  * is ignored.
1019  */
1020 static void
1021 intel_override_separate_stencil(struct intel_screen *screen)
1022 {
1023    const char *s = getenv("INTEL_SEPARATE_STENCIL");
1024    if (!s) {
1025       return;
1026    } else if (!strncmp("0", s, 2)) {
1027       screen->hw_has_separate_stencil = false;
1028    } else if (!strncmp("1", s, 2)) {
1029       screen->hw_has_separate_stencil = true;
1030    } else {
1031       fprintf(stderr,
1032               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
1033               "invalid value and is ignored", s);
1034    }
1035 }
1036
1037 static bool
1038 intel_detect_swizzling(struct intel_screen *screen)
1039 {
1040    drm_intel_bo *buffer;
1041    unsigned long flags = 0;
1042    unsigned long aligned_pitch;
1043    uint32_t tiling = I915_TILING_X;
1044    uint32_t swizzle_mode = 0;
1045
1046    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
1047                                      64, 64, 4,
1048                                      &tiling, &aligned_pitch, flags);
1049    if (buffer == NULL)
1050       return false;
1051
1052    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
1053    drm_intel_bo_unreference(buffer);
1054
1055    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
1056       return false;
1057    else
1058       return true;
1059 }
1060
1061 static __DRIconfig**
1062 intel_screen_make_configs(__DRIscreen *dri_screen)
1063 {
1064    static const gl_format formats[] = {
1065       MESA_FORMAT_RGB565,
1066       MESA_FORMAT_ARGB8888
1067    };
1068
1069    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1070    static const GLenum back_buffer_modes[] = {
1071        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1072    };
1073
1074    static const uint8_t singlesample_samples[1] = {0};
1075    static const uint8_t multisample_samples[2]  = {4, 8};
1076
1077    struct intel_screen *screen = dri_screen->driverPrivate;
1078    uint8_t depth_bits[4], stencil_bits[4];
1079    __DRIconfig **configs = NULL;
1080
1081    /* Generate singlesample configs without accumulation buffer. */
1082    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1083       __DRIconfig **new_configs;
1084       int num_depth_stencil_bits = 2;
1085
1086       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1087        * buffer that has a different number of bits per pixel than the color
1088        * buffer, gen >= 6 supports this.
1089        */
1090       depth_bits[0] = 0;
1091       stencil_bits[0] = 0;
1092
1093       if (formats[i] == MESA_FORMAT_RGB565) {
1094          depth_bits[1] = 16;
1095          stencil_bits[1] = 0;
1096          if (screen->gen >= 6) {
1097              depth_bits[2] = 24;
1098              stencil_bits[2] = 8;
1099              num_depth_stencil_bits = 3;
1100          }
1101       } else {
1102          depth_bits[1] = 24;
1103          stencil_bits[1] = 8;
1104       }
1105
1106       new_configs = driCreateConfigs(formats[i],
1107                                      depth_bits,
1108                                      stencil_bits,
1109                                      num_depth_stencil_bits,
1110                                      back_buffer_modes, 2,
1111                                      singlesample_samples, 1,
1112                                      false);
1113       configs = driConcatConfigs(configs, new_configs);
1114    }
1115
1116    /* Generate the minimum possible set of configs that include an
1117     * accumulation buffer.
1118     */
1119    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1120       __DRIconfig **new_configs;
1121
1122       if (formats[i] == MESA_FORMAT_RGB565) {
1123          depth_bits[0] = 16;
1124          stencil_bits[0] = 0;
1125       } else {
1126          depth_bits[0] = 24;
1127          stencil_bits[0] = 8;
1128       }
1129
1130       new_configs = driCreateConfigs(formats[i],
1131                                      depth_bits, stencil_bits, 1,
1132                                      back_buffer_modes, 1,
1133                                      singlesample_samples, 1,
1134                                      true);
1135       configs = driConcatConfigs(configs, new_configs);
1136    }
1137
1138    /* Generate multisample configs.
1139     *
1140     * This loop breaks early, and hence is a no-op, on gen < 6.
1141     *
1142     * Multisample configs must follow the singlesample configs in order to
1143     * work around an X server bug present in 1.12. The X server chooses to
1144     * associate the first listed RGBA888-Z24S8 config, regardless of its
1145     * sample count, with the 32-bit depth visual used for compositing.
1146     *
1147     * Only doublebuffer configs with GLX_SWAP_UNDEFINED_OML behavior are
1148     * supported.  Singlebuffer configs are not supported because no one wants
1149     * them.
1150     */
1151    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1152       if (screen->gen < 6)
1153          break;
1154
1155       __DRIconfig **new_configs;
1156       const int num_depth_stencil_bits = 2;
1157       int num_msaa_modes = 0;
1158
1159       depth_bits[0] = 0;
1160       stencil_bits[0] = 0;
1161
1162       if (formats[i] == MESA_FORMAT_RGB565) {
1163          depth_bits[1] = 16;
1164          stencil_bits[1] = 0;
1165       } else {
1166          depth_bits[1] = 24;
1167          stencil_bits[1] = 8;
1168       }
1169
1170       if (screen->gen >= 7)
1171          num_msaa_modes = 2;
1172       else if (screen->gen == 6)
1173          num_msaa_modes = 1;
1174
1175       new_configs = driCreateConfigs(formats[i],
1176                                      depth_bits,
1177                                      stencil_bits,
1178                                      num_depth_stencil_bits,
1179                                      back_buffer_modes, 1,
1180                                      multisample_samples,
1181                                      num_msaa_modes,
1182                                      false);
1183       configs = driConcatConfigs(configs, new_configs);
1184    }
1185
1186    if (configs == NULL) {
1187       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1188               __LINE__);
1189       return NULL;
1190    }
1191
1192    return configs;
1193 }
1194
1195 static void
1196 set_max_gl_versions(struct intel_screen *screen)
1197 {
1198    int gl_version_override = _mesa_get_gl_version_override();
1199
1200    switch (screen->gen) {
1201    case 7:
1202       screen->max_gl_core_version = 31;
1203       screen->max_gl_compat_version = 30;
1204       screen->max_gl_es1_version = 11;
1205       screen->max_gl_es2_version = 30;
1206       break;
1207    case 6:
1208       screen->max_gl_core_version = 31;
1209       screen->max_gl_compat_version = 30;
1210       screen->max_gl_es1_version = 11;
1211       screen->max_gl_es2_version = 30;
1212       break;
1213    case 5:
1214    case 4:
1215       screen->max_gl_core_version = 0;
1216       screen->max_gl_compat_version = 21;
1217       screen->max_gl_es1_version = 11;
1218       screen->max_gl_es2_version = 20;
1219       break;
1220    case 3: {
1221       screen->max_gl_core_version = 0;
1222       screen->max_gl_es1_version = 11;
1223       screen->max_gl_compat_version = 21;
1224       screen->max_gl_es2_version = 20;
1225
1226       break;
1227    }
1228    case 2:
1229       screen->max_gl_core_version = 0;
1230       screen->max_gl_compat_version = 13;
1231       screen->max_gl_es1_version = 11;
1232       screen->max_gl_es2_version = 0;
1233       break;
1234    default:
1235       assert(!"unrecognized intel_screen::gen");
1236       break;
1237    }
1238
1239    if (gl_version_override >= 31) {
1240       screen->max_gl_core_version = MAX2(screen->max_gl_core_version,
1241                                          gl_version_override);
1242    } else {
1243       screen->max_gl_compat_version = MAX2(screen->max_gl_compat_version,
1244                                            gl_version_override);
1245    }
1246
1247 #ifndef FEATURE_ES1
1248    screen->max_gl_es1_version = 0;
1249 #endif
1250
1251 #ifndef FEATURE_ES2
1252    screen->max_gl_es2_version = 0;
1253 #endif
1254 }
1255
1256 /**
1257  * This is the driver specific part of the createNewScreen entry point.
1258  * Called when using DRI2.
1259  *
1260  * \return the struct gl_config supported by this driver
1261  */
1262 static const
1263 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1264 {
1265    struct intel_screen *intelScreen;
1266
1267    if (psp->dri2.loader->base.version <= 2 ||
1268        psp->dri2.loader->getBuffersWithFormat == NULL) {
1269       fprintf(stderr,
1270               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1271               "support required\n");
1272       return false;
1273    }
1274
1275    /* Allocate the private area */
1276    intelScreen = calloc(1, sizeof *intelScreen);
1277    if (!intelScreen) {
1278       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1279       return false;
1280    }
1281    /* parse information in __driConfigOptions */
1282    driParseOptionInfo(&intelScreen->optionCache,
1283                       __driConfigOptions, __driNConfigOptions);
1284
1285    intelScreen->driScrnPriv = psp;
1286    psp->driverPrivate = (void *) intelScreen;
1287
1288    if (!intel_init_bufmgr(intelScreen))
1289        return false;
1290
1291    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1292
1293    if (IS_GEN7(intelScreen->deviceID)) {
1294       intelScreen->gen = 7;
1295    } else if (IS_GEN6(intelScreen->deviceID)) {
1296       intelScreen->gen = 6;
1297    } else if (IS_GEN5(intelScreen->deviceID)) {
1298       intelScreen->gen = 5;
1299    } else if (IS_965(intelScreen->deviceID)) {
1300       intelScreen->gen = 4;
1301    } else if (IS_9XX(intelScreen->deviceID)) {
1302       intelScreen->gen = 3;
1303    } else {
1304       intelScreen->gen = 2;
1305    }
1306
1307    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
1308    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
1309
1310    int has_llc = 0;
1311    bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
1312                                   &has_llc);
1313    if (success && has_llc)
1314       intelScreen->hw_has_llc = true;
1315    else if (!success && intelScreen->gen >= 6)
1316       intelScreen->hw_has_llc = true;
1317
1318    intel_override_separate_stencil(intelScreen);
1319
1320    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1321
1322    set_max_gl_versions(intelScreen);
1323
1324    psp->api_mask = (1 << __DRI_API_OPENGL);
1325    if (intelScreen->max_gl_core_version > 0)
1326       psp->api_mask |= (1 << __DRI_API_OPENGL_CORE);
1327    if (intelScreen->max_gl_es1_version > 0)
1328       psp->api_mask |= (1 << __DRI_API_GLES);
1329    if (intelScreen->max_gl_es2_version > 0)
1330       psp->api_mask |= (1 << __DRI_API_GLES2);
1331    if (intelScreen->max_gl_es2_version >= 30)
1332       psp->api_mask |= (1 << __DRI_API_GLES3);
1333
1334    psp->extensions = intelScreenExtensions;
1335
1336    return (const __DRIconfig**) intel_screen_make_configs(psp);
1337 }
1338
1339 struct intel_buffer {
1340    __DRIbuffer base;
1341    struct intel_region *region;
1342 };
1343
1344 static __DRIbuffer *
1345 intelAllocateBuffer(__DRIscreen *screen,
1346                     unsigned attachment, unsigned format,
1347                     int width, int height)
1348 {
1349    struct intel_buffer *intelBuffer;
1350    struct intel_screen *intelScreen = screen->driverPrivate;
1351
1352    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1353           attachment == __DRI_BUFFER_BACK_LEFT);
1354
1355    intelBuffer = calloc(1, sizeof *intelBuffer);
1356    if (intelBuffer == NULL)
1357       return NULL;
1358
1359    /* The front and back buffers are color buffers, which are X tiled. */
1360    intelBuffer->region = intel_region_alloc(intelScreen,
1361                                             I915_TILING_X,
1362                                             format / 8,
1363                                             width,
1364                                             height,
1365                                             true);
1366
1367    if (intelBuffer->region == NULL) {
1368            free(intelBuffer);
1369            return NULL;
1370    }
1371
1372    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1373
1374    intelBuffer->base.attachment = attachment;
1375    intelBuffer->base.cpp = intelBuffer->region->cpp;
1376    intelBuffer->base.pitch = intelBuffer->region->pitch;
1377
1378    return &intelBuffer->base;
1379 }
1380
1381 static void
1382 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1383 {
1384    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1385
1386    intel_region_release(&intelBuffer->region);
1387    free(intelBuffer);
1388 }
1389
1390
1391 const struct __DriverAPIRec driDriverAPI = {
1392    .InitScreen           = intelInitScreen2,
1393    .DestroyScreen        = intelDestroyScreen,
1394    .CreateContext        = intelCreateContext,
1395    .DestroyContext       = intelDestroyContext,
1396    .CreateBuffer         = intelCreateBuffer,
1397    .DestroyBuffer        = intelDestroyBuffer,
1398    .MakeCurrent          = intelMakeCurrent,
1399    .UnbindContext        = intelUnbindContext,
1400    .AllocateBuffer       = intelAllocateBuffer,
1401    .ReleaseBuffer        = intelReleaseBuffer
1402 };
1403
1404 /* This is the table of extensions that the loader will dlsym() for. */
1405 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1406     &driCoreExtension.base,
1407     &driDRI2Extension.base,
1408     NULL
1409 };