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(disable_derivative_optimization, "false")
  62          DRI_CONF_DESC(en, "Derivatives with finer granularity by default")
  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_SECTION_END
  69    DRI_CONF_SECTION_DEBUG
  70       DRI_CONF_NO_RAST("false")
  71       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  72       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  73       DRI_CONF_DISABLE_THROTTLING("false")
  74       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  75       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  76       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  77
  78       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  79          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  80       DRI_CONF_OPT_END
  81    DRI_CONF_SECTION_END
  82 DRI_CONF_END;
  83
  84 #include "intel_batchbuffer.h"
  85 #include "intel_buffers.h"
  86 #include "intel_bufmgr.h"
  87 #include "intel_chipset.h"
  88 #include "intel_fbo.h"
  89 #include "intel_mipmap_tree.h"
  90 #include "intel_screen.h"
  91 #include "intel_tex.h"
  92 #include "intel_regions.h"
  93
  94 #include "brw_context.h"
  95
  96 #include "i915_drm.h"
  97
  98 #ifdef USE_NEW_INTERFACE
  99 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 100 #endif /*USE_NEW_INTERFACE */
 101
 102 /**
 103  * For debugging purposes, this returns a time in seconds.
 104  */
 105 double
 106 get_time(void)
 107 {
 108    struct timespec tp;
 109
 110    clock_gettime(CLOCK_MONOTONIC, &tp);
 111
 112    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 113 }
 114
 115 void
 116 aub_dump_bmp(struct gl_context *ctx)
 117 {
 118    struct gl_framebuffer *fb = ctx->DrawBuffer;
 119
 120    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 121       struct intel_renderbuffer *irb =
 122          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 123
 124       if (irb && irb->mt) {
 125          enum aub_dump_bmp_format format;
 126
 127          switch (irb->Base.Base.Format) {
 128          case MESA_FORMAT_ARGB8888:
 129          case MESA_FORMAT_XRGB8888:
 130             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 131             break;
 132          default:
 133             continue;
 134          }
 135
 136          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 137          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 138                                        irb->draw_x,
 139                                        irb->draw_y,
 140                                        irb->Base.Base.Width,
 141                                        irb->Base.Base.Height,
 142                                        format,
 143                                        irb->mt->region->pitch,
 144                                        0);
 145       }
 146    }
 147 }
 148
 149 static const __DRItexBufferExtension intelTexBufferExtension = {
 150    .base = { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 151
 152    .setTexBuffer        = intelSetTexBuffer,
 153    .setTexBuffer2       = intelSetTexBuffer2,
 154    .releaseTexBuffer    = NULL,
 155 };
 156
 157 static void
 158 intel_dri2_flush_with_flags(__DRIcontext *cPriv,
 159                             __DRIdrawable *dPriv,
 160                             unsigned flags,
 161                             enum __DRI2throttleReason reason)
 162 {
 163    struct brw_context *brw = cPriv->driverPrivate;
 164
 165    if (!brw)
 166       return;
 167
 168    struct gl_context *ctx = &brw->ctx;
 169
 170    FLUSH_VERTICES(ctx, 0);
 171
 172    if (flags & __DRI2_FLUSH_DRAWABLE)
 173       intel_resolve_for_dri2_flush(brw, dPriv);
 174
 175    if (reason == __DRI2_THROTTLE_SWAPBUFFER ||
 176        reason == __DRI2_THROTTLE_FLUSHFRONT) {
 177       brw->need_throttle = true;
 178    }
 179
 180    intel_batchbuffer_flush(brw);
 181
 182    if (INTEL_DEBUG & DEBUG_AUB) {
 183       aub_dump_bmp(ctx);
 184    }
 185 }
 186
 187 /**
 188  * Provides compatibility with loaders that only support the older (version
 189  * 1-3) flush interface.
 190  *
 191  * That includes libGL up to Mesa 9.0, and the X Server at least up to 1.13.
 192  */
 193 static void
 194 intel_dri2_flush(__DRIdrawable *drawable)
 195 {
 196    intel_dri2_flush_with_flags(drawable->driContextPriv, drawable,
 197                                __DRI2_FLUSH_DRAWABLE,
 198                                __DRI2_THROTTLE_SWAPBUFFER);
 199 }
 200
 201 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 202     .base = { __DRI2_FLUSH, 4 },
 203
 204     .flush              = intel_dri2_flush,
 205     .invalidate         = dri2InvalidateDrawable,
 206     .flush_with_flags   = intel_dri2_flush_with_flags,
 207 };
 208
 209 static struct intel_image_format intel_image_formats[] = {
 210    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 211      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 212
 213    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 214      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 215
 216    { __DRI_IMAGE_FOURCC_RGB565, __DRI_IMAGE_COMPONENTS_RGB, 1,
 217      { { 0, 0, 0, __DRI_IMAGE_FORMAT_RGB565, 2 } } },
 218
 219    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 220      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 221        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 222        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 223
 224    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 225      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 226        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 227        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 228
 229    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 230      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 231        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 232        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 233
 234    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 235      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 236        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 237        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 238
 239    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 240      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 241        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 242        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 243
 244    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 245      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 246        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 247
 248    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 249      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 250        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 251
 252    /* For YUYV buffers, we set up two overlapping DRI images and treat
 253     * them as planar buffers in the compositors.  Plane 0 is GR88 and
 254     * samples YU or YV pairs and places Y into the R component, while
 255     * plane 1 is ARGB and samples YUYV clusters and places pairs and
 256     * places U into the G component and V into A.  This lets the
 257     * texture sampler interpolate the Y components correctly when
 258     * sampling from plane 0, and interpolate U and V correctly when
 259     * sampling from plane 1. */
 260    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 261      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 262        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
 263 };
 264
 265 static struct intel_image_format *
 266 intel_image_format_lookup(int fourcc)
 267 {
 268    struct intel_image_format *f = NULL;
 269
 270    for (unsigned i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 271       if (intel_image_formats[i].fourcc == fourcc) {
 272          f = &intel_image_formats[i];
 273          break;
 274       }
 275    }
 276
 277    return f;
 278 }
 279
 280 static __DRIimage *
 281 intel_allocate_image(int dri_format, void *loaderPrivate)
 282 {
 283     __DRIimage *image;
 284
 285     image = calloc(1, sizeof *image);
 286     if (image == NULL)
 287         return NULL;
 288
 289     image->dri_format = dri_format;
 290     image->offset = 0;
 291
 292     switch (dri_format) {
 293     case __DRI_IMAGE_FORMAT_RGB565:
 294        image->format = MESA_FORMAT_RGB565;
 295        break;
 296     case __DRI_IMAGE_FORMAT_XRGB8888:
 297        image->format = MESA_FORMAT_XRGB8888;
 298        break;
 299     case __DRI_IMAGE_FORMAT_ARGB2101010:
 300        image->format = MESA_FORMAT_ARGB2101010;
 301        break;
 302     case __DRI_IMAGE_FORMAT_XRGB2101010:
 303        image->format = MESA_FORMAT_XRGB2101010_UNORM;
 304        break;
 305     case __DRI_IMAGE_FORMAT_ARGB8888:
 306        image->format = MESA_FORMAT_ARGB8888;
 307        break;
 308     case __DRI_IMAGE_FORMAT_ABGR8888:
 309        image->format = MESA_FORMAT_RGBA8888_REV;
 310        break;
 311     case __DRI_IMAGE_FORMAT_XBGR8888:
 312        image->format = MESA_FORMAT_RGBX8888_REV;
 313        break;
 314     case __DRI_IMAGE_FORMAT_R8:
 315        image->format = MESA_FORMAT_R8;
 316        break;
 317     case __DRI_IMAGE_FORMAT_GR88:
 318        image->format = MESA_FORMAT_GR88;
 319        break;
 320     case __DRI_IMAGE_FORMAT_NONE:
 321        image->format = MESA_FORMAT_NONE;
 322        break;
 323     default:
 324        free(image);
 325        return NULL;
 326     }
 327
 328     image->internal_format = _mesa_get_format_base_format(image->format);
 329     image->data = loaderPrivate;
 330
 331     return image;
 332 }
 333
 334 /**
 335  * Sets up a DRIImage structure to point to our shared image in a region
 336  */
 337 static void
 338 intel_setup_image_from_mipmap_tree(struct brw_context *brw, __DRIimage *image,
 339                                    struct intel_mipmap_tree *mt, GLuint level,
 340                                    GLuint zoffset)
 341 {
 342    unsigned int draw_x, draw_y;
 343    uint32_t mask_x, mask_y;
 344
 345    intel_miptree_make_shareable(brw, mt);
 346
 347    intel_miptree_check_level_layer(mt, level, zoffset);
 348
 349    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 350    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 351
 352    image->width = mt->level[level].width;
 353    image->height = mt->level[level].height;
 354    image->tile_x = draw_x & mask_x;
 355    image->tile_y = draw_y & mask_y;
 356
 357    image->offset = intel_region_get_aligned_offset(mt->region,
 358                                                    draw_x & ~mask_x,
 359                                                    draw_y & ~mask_y,
 360                                                    false);
 361
 362    intel_region_reference(&image->region, mt->region);
 363 }
 364
 365 static void
 366 intel_setup_image_from_dimensions(__DRIimage *image)
 367 {
 368    image->width    = image->region->width;
 369    image->height   = image->region->height;
 370    image->tile_x = 0;
 371    image->tile_y = 0;
 372    image->has_depthstencil = false;
 373 }
 374
 375 static inline uint32_t
 376 intel_dri_format(GLuint format)
 377 {
 378    switch (format) {
 379    case MESA_FORMAT_RGB565:
 380       return __DRI_IMAGE_FORMAT_RGB565;
 381    case MESA_FORMAT_XRGB8888:
 382       return __DRI_IMAGE_FORMAT_XRGB8888;
 383    case MESA_FORMAT_ARGB8888:
 384       return __DRI_IMAGE_FORMAT_ARGB8888;
 385    case MESA_FORMAT_RGBA8888_REV:
 386       return __DRI_IMAGE_FORMAT_ABGR8888;
 387    case MESA_FORMAT_R8:
 388       return __DRI_IMAGE_FORMAT_R8;
 389    case MESA_FORMAT_RG88:
 390       return __DRI_IMAGE_FORMAT_GR88;
 391    case MESA_FORMAT_XRGB2101010_UNORM:
 392       return __DRI_IMAGE_FORMAT_XRGB2101010;
 393    case MESA_FORMAT_ARGB2101010:
 394       return __DRI_IMAGE_FORMAT_ARGB2101010;
 395    }
 396
 397    return MESA_FORMAT_NONE;
 398 }
 399
 400 static __DRIimage *
 401 intel_create_image_from_name(__DRIscreen *screen,
 402                              int width, int height, int format,
 403                              int name, int pitch, void *loaderPrivate)
 404 {
 405     struct intel_screen *intelScreen = screen->driverPrivate;
 406     __DRIimage *image;
 407     int cpp;
 408
 409     image = intel_allocate_image(format, loaderPrivate);
 410     if (image == NULL)
 411        return NULL;
 412
 413     if (image->format == MESA_FORMAT_NONE)
 414        cpp = 1;
 415     else
 416        cpp = _mesa_get_format_bytes(image->format);
 417     image->region = intel_region_alloc_for_handle(intelScreen,
 418                                                   cpp, width, height,
 419                                                   pitch * cpp, name, "image");
 420     if (image->region == NULL) {
 421        free(image);
 422        return NULL;
 423     }
 424
 425     intel_setup_image_from_dimensions(image);
 426
 427     return image;
 428 }
 429
 430 static __DRIimage *
 431 intel_create_image_from_renderbuffer(__DRIcontext *context,
 432                                      int renderbuffer, void *loaderPrivate)
 433 {
 434    __DRIimage *image;
 435    struct brw_context *brw = context->driverPrivate;
 436    struct gl_context *ctx = &brw->ctx;
 437    struct gl_renderbuffer *rb;
 438    struct intel_renderbuffer *irb;
 439
 440    rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
 441    if (!rb) {
 442       _mesa_error(ctx, GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 443       return NULL;
 444    }
 445
 446    irb = intel_renderbuffer(rb);
 447    intel_miptree_make_shareable(brw, irb->mt);
 448    image = calloc(1, sizeof *image);
 449    if (image == NULL)
 450       return NULL;
 451
 452    image->internal_format = rb->InternalFormat;
 453    image->format = rb->Format;
 454    image->offset = 0;
 455    image->data = loaderPrivate;
 456    intel_region_reference(&image->region, irb->mt->region);
 457    intel_setup_image_from_dimensions(image);
 458    image->dri_format = intel_dri_format(image->format);
 459    image->has_depthstencil = irb->mt->stencil_mt? true : false;
 460
 461    rb->NeedsFinishRenderTexture = true;
 462    return image;
 463 }
 464
 465 static __DRIimage *
 466 intel_create_image_from_texture(__DRIcontext *context, int target,
 467                                 unsigned texture, int zoffset,
 468                                 int level,
 469                                 unsigned *error,
 470                                 void *loaderPrivate)
 471 {
 472    __DRIimage *image;
 473    struct brw_context *brw = context->driverPrivate;
 474    struct gl_texture_object *obj;
 475    struct intel_texture_object *iobj;
 476    GLuint face = 0;
 477
 478    obj = _mesa_lookup_texture(&brw->ctx, texture);
 479    if (!obj || obj->Target != target) {
 480       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 481       return NULL;
 482    }
 483
 484    if (target == GL_TEXTURE_CUBE_MAP)
 485       face = zoffset;
 486
 487    _mesa_test_texobj_completeness(&brw->ctx, obj);
 488    iobj = intel_texture_object(obj);
 489    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 490       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 491       return NULL;
 492    }
 493
 494    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 495       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 496       return NULL;
 497    }
 498
 499    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 500       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 501       return NULL;
 502    }
 503    image = calloc(1, sizeof *image);
 504    if (image == NULL) {
 505       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 506       return NULL;
 507    }
 508
 509    image->internal_format = obj->Image[face][level]->InternalFormat;
 510    image->format = obj->Image[face][level]->TexFormat;
 511    image->data = loaderPrivate;
 512    intel_setup_image_from_mipmap_tree(brw, image, iobj->mt, level, zoffset);
 513    image->dri_format = intel_dri_format(image->format);
 514    image->has_depthstencil = iobj->mt->stencil_mt? true : false;
 515    if (image->dri_format == MESA_FORMAT_NONE) {
 516       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 517       free(image);
 518       return NULL;
 519    }
 520
 521    *error = __DRI_IMAGE_ERROR_SUCCESS;
 522    return image;
 523 }
 524
 525 static void
 526 intel_destroy_image(__DRIimage *image)
 527 {
 528     intel_region_release(&image->region);
 529     free(image);
 530 }
 531
 532 static __DRIimage *
 533 intel_create_image(__DRIscreen *screen,
 534                    int width, int height, int format,
 535                    unsigned int use,
 536                    void *loaderPrivate)
 537 {
 538    __DRIimage *image;
 539    struct intel_screen *intelScreen = screen->driverPrivate;
 540    uint32_t tiling;
 541    int cpp;
 542
 543    tiling = I915_TILING_X;
 544    if (use & __DRI_IMAGE_USE_CURSOR) {
 545       if (width != 64 || height != 64)
 546          return NULL;
 547       tiling = I915_TILING_NONE;
 548    }
 549
 550    if (use & __DRI_IMAGE_USE_LINEAR)
 551       tiling = I915_TILING_NONE;
 552
 553    image = intel_allocate_image(format, loaderPrivate);
 554    if (image == NULL)
 555       return NULL;
 556
 557    cpp = _mesa_get_format_bytes(image->format);
 558    image->region =
 559       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 560    if (image->region == NULL) {
 561       free(image);
 562       return NULL;
 563    }
 564
 565    intel_setup_image_from_dimensions(image);
 566
 567    return image;
 568 }
 569
 570 static GLboolean
 571 intel_query_image(__DRIimage *image, int attrib, int *value)
 572 {
 573    switch (attrib) {
 574    case __DRI_IMAGE_ATTRIB_STRIDE:
 575       *value = image->region->pitch;
 576       return true;
 577    case __DRI_IMAGE_ATTRIB_HANDLE:
 578       *value = image->region->bo->handle;
 579       return true;
 580    case __DRI_IMAGE_ATTRIB_NAME:
 581       return intel_region_flink(image->region, (uint32_t *) value);
 582    case __DRI_IMAGE_ATTRIB_FORMAT:
 583       *value = image->dri_format;
 584       return true;
 585    case __DRI_IMAGE_ATTRIB_WIDTH:
 586       *value = image->region->width;
 587       return true;
 588    case __DRI_IMAGE_ATTRIB_HEIGHT:
 589       *value = image->region->height;
 590       return true;
 591    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 592       if (image->planar_format == NULL)
 593          return false;
 594       *value = image->planar_format->components;
 595       return true;
 596    case __DRI_IMAGE_ATTRIB_FD:
 597       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 598          return true;
 599       return false;
 600   default:
 601       return false;
 602    }
 603 }
 604
 605 static __DRIimage *
 606 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 607 {
 608    __DRIimage *image;
 609
 610    image = calloc(1, sizeof *image);
 611    if (image == NULL)
 612       return NULL;
 613
 614    intel_region_reference(&image->region, orig_image->region);
 615    if (image->region == NULL) {
 616       free(image);
 617       return NULL;
 618    }
 619
 620    image->internal_format = orig_image->internal_format;
 621    image->planar_format   = orig_image->planar_format;
 622    image->dri_format      = orig_image->dri_format;
 623    image->format          = orig_image->format;
 624    image->offset          = orig_image->offset;
 625    image->width           = orig_image->width;
 626    image->height          = orig_image->height;
 627    image->tile_x          = orig_image->tile_x;
 628    image->tile_y          = orig_image->tile_y;
 629    image->has_depthstencil = orig_image->has_depthstencil;
 630    image->data            = loaderPrivate;
 631
 632    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 633    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 634
 635    return image;
 636 }
 637
 638 static GLboolean
 639 intel_validate_usage(__DRIimage *image, unsigned int use)
 640 {
 641    if (use & __DRI_IMAGE_USE_CURSOR) {
 642       if (image->region->width != 64 || image->region->height != 64)
 643          return GL_FALSE;
 644    }
 645
 646    return GL_TRUE;
 647 }
 648
 649 static __DRIimage *
 650 intel_create_image_from_names(__DRIscreen *screen,
 651                               int width, int height, int fourcc,
 652                               int *names, int num_names,
 653                               int *strides, int *offsets,
 654                               void *loaderPrivate)
 655 {
 656     struct intel_image_format *f = NULL;
 657     __DRIimage *image;
 658     int i, index;
 659
 660     if (screen == NULL || names == NULL || num_names != 1)
 661         return NULL;
 662
 663     f = intel_image_format_lookup(fourcc);
 664     if (f == NULL)
 665         return NULL;
 666
 667     image = intel_create_image_from_name(screen, width, height,
 668                                          __DRI_IMAGE_FORMAT_NONE,
 669                                          names[0], strides[0],
 670                                          loaderPrivate);
 671
 672    if (image == NULL)
 673       return NULL;
 674
 675     image->planar_format = f;
 676     for (i = 0; i < f->nplanes; i++) {
 677         index = f->planes[i].buffer_index;
 678         image->offsets[index] = offsets[index];
 679         image->strides[index] = strides[index];
 680     }
 681
 682     return image;
 683 }
 684
 685 static __DRIimage *
 686 intel_create_image_from_fds(__DRIscreen *screen,
 687                             int width, int height, int fourcc,
 688                             int *fds, int num_fds, int *strides, int *offsets,
 689                             void *loaderPrivate)
 690 {
 691    struct intel_screen *intelScreen = screen->driverPrivate;
 692    struct intel_image_format *f;
 693    __DRIimage *image;
 694    int i, index;
 695
 696    if (fds == NULL || num_fds != 1)
 697       return NULL;
 698
 699    f = intel_image_format_lookup(fourcc);
 700    if (f == NULL)
 701       return NULL;
 702
 703    if (f->nplanes == 1)
 704       image = intel_allocate_image(f->planes[0].dri_format, loaderPrivate);
 705    else
 706       image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 707
 708    if (image == NULL)
 709       return NULL;
 710
 711    image->region = intel_region_alloc_for_fd(intelScreen,
 712                                              1, width, height,
 713                                              strides[0], fds[0], "image");
 714    if (image->region == NULL) {
 715       free(image);
 716       return NULL;
 717    }
 718
 719    image->planar_format = f;
 720    for (i = 0; i < f->nplanes; i++) {
 721       index = f->planes[i].buffer_index;
 722       image->offsets[index] = offsets[index];
 723       image->strides[index] = strides[index];
 724    }
 725
 726    intel_setup_image_from_dimensions(image);
 727
 728    return image;
 729 }
 730
 731 static __DRIimage *
 732 intel_create_image_from_dma_bufs(__DRIscreen *screen,
 733                                  int width, int height, int fourcc,
 734                                  int *fds, int num_fds,
 735                                  int *strides, int *offsets,
 736                                  enum __DRIYUVColorSpace yuv_color_space,
 737                                  enum __DRISampleRange sample_range,
 738                                  enum __DRIChromaSiting horizontal_siting,
 739                                  enum __DRIChromaSiting vertical_siting,
 740                                  unsigned *error,
 741                                  void *loaderPrivate)
 742 {
 743    __DRIimage *image;
 744    struct intel_image_format *f = intel_image_format_lookup(fourcc);
 745
 746    /* For now only packed formats that have native sampling are supported. */
 747    if (!f || f->nplanes != 1) {
 748       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 749       return NULL;
 750    }
 751
 752    image = intel_create_image_from_fds(screen, width, height, fourcc, fds,
 753                                        num_fds, strides, offsets,
 754                                        loaderPrivate);
 755
 756    /*
 757     * Invalid parameters and any inconsistencies between are assumed to be
 758     * checked by the caller. Therefore besides unsupported formats one can fail
 759     * only in allocation.
 760     */
 761    if (!image) {
 762       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 763       return NULL;
 764    }
 765
 766    image->dma_buf_imported = true;
 767    image->yuv_color_space = yuv_color_space;
 768    image->sample_range = sample_range;
 769    image->horizontal_siting = horizontal_siting;
 770    image->vertical_siting = vertical_siting;
 771
 772    *error = __DRI_IMAGE_ERROR_SUCCESS;
 773    return image;
 774 }
 775
 776 static __DRIimage *
 777 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 778 {
 779     int width, height, offset, stride, dri_format, index;
 780     struct intel_image_format *f;
 781     uint32_t mask_x, mask_y;
 782     __DRIimage *image;
 783
 784     if (parent == NULL || parent->planar_format == NULL)
 785         return NULL;
 786
 787     f = parent->planar_format;
 788
 789     if (plane >= f->nplanes)
 790         return NULL;
 791
 792     width = parent->region->width >> f->planes[plane].width_shift;
 793     height = parent->region->height >> f->planes[plane].height_shift;
 794     dri_format = f->planes[plane].dri_format;
 795     index = f->planes[plane].buffer_index;
 796     offset = parent->offsets[index];
 797     stride = parent->strides[index];
 798
 799     image = intel_allocate_image(dri_format, loaderPrivate);
 800     if (image == NULL)
 801        return NULL;
 802
 803     if (offset + height * stride > parent->region->bo->size) {
 804        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 805        free(image);
 806        return NULL;
 807     }
 808
 809     image->region = calloc(sizeof(*image->region), 1);
 810     if (image->region == NULL) {
 811        free(image);
 812        return NULL;
 813     }
 814
 815     image->region->cpp = _mesa_get_format_bytes(image->format);
 816     image->region->width = width;
 817     image->region->height = height;
 818     image->region->pitch = stride;
 819     image->region->refcount = 1;
 820     image->region->bo = parent->region->bo;
 821     drm_intel_bo_reference(image->region->bo);
 822     image->region->tiling = parent->region->tiling;
 823     image->offset = offset;
 824     intel_setup_image_from_dimensions(image);
 825
 826     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 827     if (offset & mask_x)
 828        _mesa_warning(NULL,
 829                      "intel_create_sub_image: offset not on tile boundary");
 830
 831     return image;
 832 }
 833
 834 static struct __DRIimageExtensionRec intelImageExtension = {
 835     .base = { __DRI_IMAGE, 8 },
 836
 837     .createImageFromName                = intel_create_image_from_name,
 838     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 839     .destroyImage                       = intel_destroy_image,
 840     .createImage                        = intel_create_image,
 841     .queryImage                         = intel_query_image,
 842     .dupImage                           = intel_dup_image,
 843     .validateUsage                      = intel_validate_usage,
 844     .createImageFromNames               = intel_create_image_from_names,
 845     .fromPlanar                         = intel_from_planar,
 846     .createImageFromTexture             = intel_create_image_from_texture,
 847     .createImageFromFds                 = intel_create_image_from_fds,
 848     .createImageFromDmaBufs             = intel_create_image_from_dma_bufs
 849 };
 850
 851 static const __DRIextension *intelScreenExtensions[] = {
 852     &intelTexBufferExtension.base,
 853     &intelFlushExtension.base,
 854     &intelImageExtension.base,
 855     &dri2ConfigQueryExtension.base,
 856     NULL
 857 };
 858
 859 static bool
 860 intel_get_param(__DRIscreen *psp, int param, int *value)
 861 {
 862    int ret;
 863    struct drm_i915_getparam gp;
 864
 865    memset(&gp, 0, sizeof(gp));
 866    gp.param = param;
 867    gp.value = value;
 868
 869    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 870    if (ret) {
 871       if (ret != -EINVAL)
 872          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 873       return false;
 874    }
 875
 876    return true;
 877 }
 878
 879 static bool
 880 intel_get_boolean(__DRIscreen *psp, int param)
 881 {
 882    int value = 0;
 883    return intel_get_param(psp, param, &value) && value;
 884 }
 885
 886 static void
 887 intelDestroyScreen(__DRIscreen * sPriv)
 888 {
 889    struct intel_screen *intelScreen = sPriv->driverPrivate;
 890
 891    dri_bufmgr_destroy(intelScreen->bufmgr);
 892    driDestroyOptionInfo(&intelScreen->optionCache);
 893
 894    free(intelScreen);
 895    sPriv->driverPrivate = NULL;
 896 }
 897
 898
 899 /**
 900  * This is called when we need to set up GL rendering to a new X window.
 901  */
 902 static GLboolean
 903 intelCreateBuffer(__DRIscreen * driScrnPriv,
 904                   __DRIdrawable * driDrawPriv,
 905                   const struct gl_config * mesaVis, GLboolean isPixmap)
 906 {
 907    struct intel_renderbuffer *rb;
 908    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 909    gl_format rgbFormat;
 910    unsigned num_samples = intel_quantize_num_samples(screen, mesaVis->samples);
 911    struct gl_framebuffer *fb;
 912
 913    if (isPixmap)
 914       return false;
 915
 916    fb = CALLOC_STRUCT(gl_framebuffer);
 917    if (!fb)
 918       return false;
 919
 920    _mesa_initialize_window_framebuffer(fb, mesaVis);
 921
 922    if (mesaVis->redBits == 5)
 923       rgbFormat = MESA_FORMAT_RGB565;
 924    else if (mesaVis->redBits == 10)
 925       rgbFormat = MESA_FORMAT_ARGB2101010;
 926    else if (mesaVis->sRGBCapable)
 927       rgbFormat = MESA_FORMAT_SARGB8;
 928    else if (mesaVis->alphaBits == 0)
 929       rgbFormat = MESA_FORMAT_XRGB8888;
 930    else {
 931       rgbFormat = MESA_FORMAT_SARGB8;
 932       fb->Visual.sRGBCapable = true;
 933    }
 934
 935    /* setup the hardware-based renderbuffers */
 936    rb = intel_create_renderbuffer(rgbFormat, num_samples);
 937    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 938
 939    if (mesaVis->doubleBufferMode) {
 940       rb = intel_create_renderbuffer(rgbFormat, num_samples);
 941       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 942    }
 943
 944    /*
 945     * Assert here that the gl_config has an expected depth/stencil bit
 946     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 947     * which constructs the advertised configs.)
 948     */
 949    if (mesaVis->depthBits == 24) {
 950       assert(mesaVis->stencilBits == 8);
 951
 952       if (screen->devinfo->has_hiz_and_separate_stencil) {
 953          rb = intel_create_private_renderbuffer(MESA_FORMAT_X8_Z24,
 954                                                 num_samples);
 955          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 956          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8,
 957                                                 num_samples);
 958          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 959       } else {
 960          /*
 961           * Use combined depth/stencil. Note that the renderbuffer is
 962           * attached to two attachment points.
 963           */
 964          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24,
 965                                                 num_samples);
 966          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 967          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 968       }
 969    }
 970    else if (mesaVis->depthBits == 16) {
 971       assert(mesaVis->stencilBits == 0);
 972       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16,
 973                                              num_samples);
 974       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 975    }
 976    else {
 977       assert(mesaVis->depthBits == 0);
 978       assert(mesaVis->stencilBits == 0);
 979    }
 980
 981    /* now add any/all software-based renderbuffers we may need */
 982    _swrast_add_soft_renderbuffers(fb,
 983                                   false, /* never sw color */
 984                                   false, /* never sw depth */
 985                                   false, /* never sw stencil */
 986                                   mesaVis->accumRedBits > 0,
 987                                   false, /* never sw alpha */
 988                                   false  /* never sw aux */ );
 989    driDrawPriv->driverPrivate = fb;
 990
 991    return true;
 992 }
 993
 994 static void
 995 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 996 {
 997     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 998
 999     _mesa_reference_framebuffer(&fb, NULL);
1000 }
1001
1002 static bool
1003 intel_init_bufmgr(struct intel_screen *intelScreen)
1004 {
1005    __DRIscreen *spriv = intelScreen->driScrnPriv;
1006
1007    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
1008
1009    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
1010    if (intelScreen->bufmgr == NULL) {
1011       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
1012               __func__, __LINE__);
1013       return false;
1014    }
1015
1016    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
1017
1018    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
1019       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
1020       return false;
1021    }
1022
1023    return true;
1024 }
1025
1026 static bool
1027 intel_detect_swizzling(struct intel_screen *screen)
1028 {
1029    drm_intel_bo *buffer;
1030    unsigned long flags = 0;
1031    unsigned long aligned_pitch;
1032    uint32_t tiling = I915_TILING_X;
1033    uint32_t swizzle_mode = 0;
1034
1035    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
1036                                      64, 64, 4,
1037                                      &tiling, &aligned_pitch, flags);
1038    if (buffer == NULL)
1039       return false;
1040
1041    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
1042    drm_intel_bo_unreference(buffer);
1043
1044    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
1045       return false;
1046    else
1047       return true;
1048 }
1049
1050 static __DRIconfig**
1051 intel_screen_make_configs(__DRIscreen *dri_screen)
1052 {
1053    static const gl_format formats[] = {
1054       MESA_FORMAT_RGB565,
1055       MESA_FORMAT_ARGB8888,
1056       MESA_FORMAT_ARGB2101010
1057    };
1058
1059    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1060    static const GLenum back_buffer_modes[] = {
1061        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1062    };
1063
1064    static const uint8_t singlesample_samples[1] = {0};
1065    static const uint8_t multisample_samples[2]  = {4, 8};
1066
1067    struct intel_screen *screen = dri_screen->driverPrivate;
1068    const struct brw_device_info *devinfo = screen->devinfo;
1069    uint8_t depth_bits[4], stencil_bits[4];
1070    __DRIconfig **configs = NULL;
1071
1072    /* Generate singlesample configs without accumulation buffer. */
1073    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1074       __DRIconfig **new_configs;
1075       int num_depth_stencil_bits = 2;
1076
1077       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1078        * buffer that has a different number of bits per pixel than the color
1079        * buffer, gen >= 6 supports this.
1080        */
1081       depth_bits[0] = 0;
1082       stencil_bits[0] = 0;
1083
1084       if (formats[i] == MESA_FORMAT_RGB565) {
1085          depth_bits[1] = 16;
1086          stencil_bits[1] = 0;
1087          if (devinfo->gen >= 6) {
1088              depth_bits[2] = 24;
1089              stencil_bits[2] = 8;
1090              num_depth_stencil_bits = 3;
1091          }
1092       } else {
1093          depth_bits[1] = 24;
1094          stencil_bits[1] = 8;
1095       }
1096
1097       new_configs = driCreateConfigs(formats[i],
1098                                      depth_bits,
1099                                      stencil_bits,
1100                                      num_depth_stencil_bits,
1101                                      back_buffer_modes, 2,
1102                                      singlesample_samples, 1,
1103                                      false);
1104       configs = driConcatConfigs(configs, new_configs);
1105    }
1106
1107    /* Generate the minimum possible set of configs that include an
1108     * accumulation buffer.
1109     */
1110    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1111       __DRIconfig **new_configs;
1112
1113       if (formats[i] == MESA_FORMAT_RGB565) {
1114          depth_bits[0] = 16;
1115          stencil_bits[0] = 0;
1116       } else {
1117          depth_bits[0] = 24;
1118          stencil_bits[0] = 8;
1119       }
1120
1121       new_configs = driCreateConfigs(formats[i],
1122                                      depth_bits, stencil_bits, 1,
1123                                      back_buffer_modes, 1,
1124                                      singlesample_samples, 1,
1125                                      true);
1126       configs = driConcatConfigs(configs, new_configs);
1127    }
1128
1129    /* Generate multisample configs.
1130     *
1131     * This loop breaks early, and hence is a no-op, on gen < 6.
1132     *
1133     * Multisample configs must follow the singlesample configs in order to
1134     * work around an X server bug present in 1.12. The X server chooses to
1135     * associate the first listed RGBA888-Z24S8 config, regardless of its
1136     * sample count, with the 32-bit depth visual used for compositing.
1137     *
1138     * Only doublebuffer configs with GLX_SWAP_UNDEFINED_OML behavior are
1139     * supported.  Singlebuffer configs are not supported because no one wants
1140     * them.
1141     */
1142    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1143       if (devinfo->gen < 6)
1144          break;
1145
1146       __DRIconfig **new_configs;
1147       const int num_depth_stencil_bits = 2;
1148       int num_msaa_modes = 0;
1149
1150       depth_bits[0] = 0;
1151       stencil_bits[0] = 0;
1152
1153       if (formats[i] == MESA_FORMAT_RGB565) {
1154          depth_bits[1] = 16;
1155          stencil_bits[1] = 0;
1156       } else {
1157          depth_bits[1] = 24;
1158          stencil_bits[1] = 8;
1159       }
1160
1161       if (devinfo->gen >= 7)
1162          num_msaa_modes = 2;
1163       else if (devinfo->gen == 6)
1164          num_msaa_modes = 1;
1165
1166       new_configs = driCreateConfigs(formats[i],
1167                                      depth_bits,
1168                                      stencil_bits,
1169                                      num_depth_stencil_bits,
1170                                      back_buffer_modes, 1,
1171                                      multisample_samples,
1172                                      num_msaa_modes,
1173                                      false);
1174       configs = driConcatConfigs(configs, new_configs);
1175    }
1176
1177    if (configs == NULL) {
1178       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1179               __LINE__);
1180       return NULL;
1181    }
1182
1183    return configs;
1184 }
1185
1186 static void
1187 set_max_gl_versions(struct intel_screen *screen)
1188 {
1189    __DRIscreen *psp = screen->driScrnPriv;
1190
1191    switch (screen->devinfo->gen) {
1192    case 7:
1193       psp->max_gl_core_version = 32;
1194       psp->max_gl_compat_version = 30;
1195       psp->max_gl_es1_version = 11;
1196       psp->max_gl_es2_version = 30;
1197       break;
1198    case 6:
1199       psp->max_gl_core_version = 31;
1200       psp->max_gl_compat_version = 30;
1201       psp->max_gl_es1_version = 11;
1202       psp->max_gl_es2_version = 30;
1203       break;
1204    case 5:
1205    case 4:
1206       psp->max_gl_core_version = 0;
1207       psp->max_gl_compat_version = 21;
1208       psp->max_gl_es1_version = 11;
1209       psp->max_gl_es2_version = 20;
1210       break;
1211    default:
1212       assert(!"unrecognized intel_screen::gen");
1213       break;
1214    }
1215 }
1216
1217 /**
1218  * This is the driver specific part of the createNewScreen entry point.
1219  * Called when using DRI2.
1220  *
1221  * \return the struct gl_config supported by this driver
1222  */
1223 static const
1224 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1225 {
1226    struct intel_screen *intelScreen;
1227
1228    if (psp->dri2.loader->base.version <= 2 ||
1229        psp->dri2.loader->getBuffersWithFormat == NULL) {
1230       fprintf(stderr,
1231               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1232               "support required\n");
1233       return false;
1234    }
1235
1236    /* Allocate the private area */
1237    intelScreen = calloc(1, sizeof *intelScreen);
1238    if (!intelScreen) {
1239       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1240       return false;
1241    }
1242    /* parse information in __driConfigOptions */
1243    driParseOptionInfo(&intelScreen->optionCache, __driConfigOptions);
1244
1245    intelScreen->driScrnPriv = psp;
1246    psp->driverPrivate = (void *) intelScreen;
1247
1248    if (!intel_init_bufmgr(intelScreen))
1249        return false;
1250
1251    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1252    intelScreen->devinfo = brw_get_device_info(intelScreen->deviceID);
1253
1254    intelScreen->hw_must_use_separate_stencil = intelScreen->devinfo->gen >= 7;
1255
1256    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1257
1258    set_max_gl_versions(intelScreen);
1259
1260    psp->extensions = intelScreenExtensions;
1261
1262    return (const __DRIconfig**) intel_screen_make_configs(psp);
1263 }
1264
1265 struct intel_buffer {
1266    __DRIbuffer base;
1267    struct intel_region *region;
1268 };
1269
1270 static __DRIbuffer *
1271 intelAllocateBuffer(__DRIscreen *screen,
1272                     unsigned attachment, unsigned format,
1273                     int width, int height)
1274 {
1275    struct intel_buffer *intelBuffer;
1276    struct intel_screen *intelScreen = screen->driverPrivate;
1277
1278    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1279           attachment == __DRI_BUFFER_BACK_LEFT);
1280
1281    intelBuffer = calloc(1, sizeof *intelBuffer);
1282    if (intelBuffer == NULL)
1283       return NULL;
1284
1285    /* The front and back buffers are color buffers, which are X tiled. */
1286    intelBuffer->region = intel_region_alloc(intelScreen,
1287                                             I915_TILING_X,
1288                                             format / 8,
1289                                             width,
1290                                             height,
1291                                             true);
1292
1293    if (intelBuffer->region == NULL) {
1294            free(intelBuffer);
1295            return NULL;
1296    }
1297
1298    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1299
1300    intelBuffer->base.attachment = attachment;
1301    intelBuffer->base.cpp = intelBuffer->region->cpp;
1302    intelBuffer->base.pitch = intelBuffer->region->pitch;
1303
1304    return &intelBuffer->base;
1305 }
1306
1307 static void
1308 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1309 {
1310    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1311
1312    intel_region_release(&intelBuffer->region);
1313    free(intelBuffer);
1314 }
1315
1316
1317 const struct __DriverAPIRec driDriverAPI = {
1318    .InitScreen           = intelInitScreen2,
1319    .DestroyScreen        = intelDestroyScreen,
1320    .CreateContext        = brwCreateContext,
1321    .DestroyContext       = intelDestroyContext,
1322    .CreateBuffer         = intelCreateBuffer,
1323    .DestroyBuffer        = intelDestroyBuffer,
1324    .MakeCurrent          = intelMakeCurrent,
1325    .UnbindContext        = intelUnbindContext,
1326    .AllocateBuffer       = intelAllocateBuffer,
1327    .ReleaseBuffer        = intelReleaseBuffer
1328 };
1329
1330 /* This is the table of extensions that the loader will dlsym() for. */
1331 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1332     &driCoreExtension.base,
1333     &driDRI2Extension.base,
1334     NULL
1335 };