src/mesa/drivers/dri/intel/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/mfeatures.h"
  38 #include "main/version.h"
  39 #include "swrast/s_renderbuffer.h"
  40
  41 #include "utils.h"
  42 #include "xmlpool.h"
  43
  44 PUBLIC const char __driConfigOptions[] =
  45    DRI_CONF_BEGIN
  46    DRI_CONF_SECTION_PERFORMANCE
  47       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  48       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  49        * DRI_CONF_BO_REUSE_ALL
  50        */
  51       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  52          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  53             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  54             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  55          DRI_CONF_DESC_END
  56       DRI_CONF_OPT_END
  57
  58       DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
  59          DRI_CONF_DESC(en, "Enable texture tiling")
  60       DRI_CONF_OPT_END
  61
  62       DRI_CONF_OPT_BEGIN(hiz, bool, true)
  63          DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
  64       DRI_CONF_OPT_END
  65
  66       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  67          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  68       DRI_CONF_OPT_END
  69
  70       DRI_CONF_OPT_BEGIN(fragment_shader, bool, true)
  71          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  72       DRI_CONF_OPT_END
  73
  74    DRI_CONF_SECTION_END
  75    DRI_CONF_SECTION_QUALITY
  76       DRI_CONF_FORCE_S3TC_ENABLE(false)
  77       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  78    DRI_CONF_SECTION_END
  79    DRI_CONF_SECTION_DEBUG
  80      DRI_CONF_NO_RAST(false)
  81      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  82      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  83      DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN(false)
  84      DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS(false)
  85      DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED(false)
  86
  87       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  88          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  89       DRI_CONF_OPT_END
  90
  91       DRI_CONF_OPT_BEGIN(shader_precompile, bool, true)
  92          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  93       DRI_CONF_OPT_END
  94    DRI_CONF_SECTION_END
  95 DRI_CONF_END;
  96
  97 const GLuint __driNConfigOptions = 16;
  98
  99 #include "intel_batchbuffer.h"
 100 #include "intel_buffers.h"
 101 #include "intel_bufmgr.h"
 102 #include "intel_chipset.h"
 103 #include "intel_fbo.h"
 104 #include "intel_mipmap_tree.h"
 105 #include "intel_screen.h"
 106 #include "intel_tex.h"
 107 #include "intel_regions.h"
 108
 109 #ifndef I915
 110 #include "brw_context.h"
 111 #endif
 112
 113 #include "i915_drm.h"
 114
 115 #ifdef USE_NEW_INTERFACE
 116 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 117 #endif /*USE_NEW_INTERFACE */
 118
 119 /**
 120  * For debugging purposes, this returns a time in seconds.
 121  */
 122 double
 123 get_time(void)
 124 {
 125    struct timespec tp;
 126
 127    clock_gettime(CLOCK_MONOTONIC, &tp);
 128
 129    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 130 }
 131
 132 void
 133 aub_dump_bmp(struct gl_context *ctx)
 134 {
 135    struct gl_framebuffer *fb = ctx->DrawBuffer;
 136
 137    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 138       struct intel_renderbuffer *irb =
 139          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 140
 141       if (irb && irb->mt) {
 142          enum aub_dump_bmp_format format;
 143
 144          switch (irb->Base.Base.Format) {
 145          case MESA_FORMAT_ARGB8888:
 146          case MESA_FORMAT_XRGB8888:
 147             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 148             break;
 149          default:
 150             continue;
 151          }
 152
 153          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 154          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 155                                        irb->draw_x,
 156                                        irb->draw_y,
 157                                        irb->Base.Base.Width,
 158                                        irb->Base.Base.Height,
 159                                        format,
 160                                        irb->mt->region->pitch,
 161                                        0);
 162       }
 163    }
 164 }
 165
 166 static const __DRItexBufferExtension intelTexBufferExtension = {
 167    .base = { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 168
 169    .setTexBuffer        = intelSetTexBuffer,
 170    .setTexBuffer2       = intelSetTexBuffer2,
 171    .releaseTexBuffer    = NULL,
 172 };
 173
 174 static void
 175 intelDRI2Flush(__DRIdrawable *drawable)
 176 {
 177    GET_CURRENT_CONTEXT(ctx);
 178    struct intel_context *intel = intel_context(ctx);
 179    if (intel == NULL)
 180       return;
 181
 182    if (intel->gen < 4)
 183       INTEL_FIREVERTICES(intel);
 184
 185    intel_downsample_for_dri2_flush(intel, drawable);
 186    intel->need_throttle = true;
 187
 188    if (intel->batch.used)
 189       intel_batchbuffer_flush(intel);
 190
 191    if (INTEL_DEBUG & DEBUG_AUB) {
 192       aub_dump_bmp(ctx);
 193    }
 194 }
 195
 196 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 197     .base = { __DRI2_FLUSH, 3 },
 198
 199     .flush              = intelDRI2Flush,
 200     .invalidate         = dri2InvalidateDrawable,
 201 };
 202
 203 static struct intel_image_format intel_image_formats[] = {
 204    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 205      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 206
 207    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 208      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 209
 210    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 211      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 212        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 213        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 214
 215    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 216      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 217        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 218        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 219
 220    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 221      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 222        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 223        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 224
 225    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 226      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 227        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 228        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 229
 230    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 231      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 232        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 233        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 234
 235    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 236      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 237        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 238
 239    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 240      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 241        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 242
 243    /* For YUYV buffers, we set up two overlapping DRI images and treat
 244     * them as planar buffers in the compositors.  Plane 0 is GR88 and
 245     * samples YU or YV pairs and places Y into the R component, while
 246     * plane 1 is ARGB and samples YUYV clusters and places pairs and
 247     * places U into the G component and V into A.  This lets the
 248     * texture sampler interpolate the Y components correctly when
 249     * sampling from plane 0, and interpolate U and V correctly when
 250     * sampling from plane 1. */
 251    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 252      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 253        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
 254 };
 255
 256 static __DRIimage *
 257 intel_allocate_image(int dri_format, void *loaderPrivate)
 258 {
 259     __DRIimage *image;
 260
 261     image = calloc(1, sizeof *image);
 262     if (image == NULL)
 263         return NULL;
 264
 265     image->dri_format = dri_format;
 266     image->offset = 0;
 267
 268     switch (dri_format) {
 269     case __DRI_IMAGE_FORMAT_RGB565:
 270        image->format = MESA_FORMAT_RGB565;
 271        break;
 272     case __DRI_IMAGE_FORMAT_XRGB8888:
 273        image->format = MESA_FORMAT_XRGB8888;
 274        break;
 275     case __DRI_IMAGE_FORMAT_ARGB8888:
 276        image->format = MESA_FORMAT_ARGB8888;
 277        break;
 278     case __DRI_IMAGE_FORMAT_ABGR8888:
 279        image->format = MESA_FORMAT_RGBA8888_REV;
 280        break;
 281     case __DRI_IMAGE_FORMAT_XBGR8888:
 282        image->format = MESA_FORMAT_RGBX8888_REV;
 283        break;
 284     case __DRI_IMAGE_FORMAT_R8:
 285        image->format = MESA_FORMAT_R8;
 286        break;
 287     case __DRI_IMAGE_FORMAT_GR88:
 288        image->format = MESA_FORMAT_GR88;
 289        break;
 290     case __DRI_IMAGE_FORMAT_NONE:
 291        image->format = MESA_FORMAT_NONE;
 292        break;
 293     default:
 294        free(image);
 295        return NULL;
 296     }
 297
 298     image->internal_format = _mesa_get_format_base_format(image->format);
 299     image->data = loaderPrivate;
 300
 301     return image;
 302 }
 303
 304 /**
 305  * Sets up a DRIImage structure to point to our shared image in a region
 306  */
 307 static void
 308 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 309                                    struct intel_mipmap_tree *mt, GLuint level,
 310                                    GLuint zoffset)
 311 {
 312    unsigned int draw_x, draw_y;
 313    uint32_t mask_x, mask_y;
 314
 315    intel_miptree_check_level_layer(mt, level, zoffset);
 316
 317    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 318    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 319
 320    image->width = mt->level[level].width;
 321    image->height = mt->level[level].height;
 322    image->tile_x = draw_x & mask_x;
 323    image->tile_y = draw_y & mask_y;
 324
 325    image->offset = intel_region_get_aligned_offset(mt->region,
 326                                                    draw_x & ~mask_x,
 327                                                    draw_y & ~mask_y,
 328                                                    false);
 329
 330    intel_region_reference(&image->region, mt->region);
 331 }
 332
 333 static void
 334 intel_setup_image_from_dimensions(__DRIimage *image)
 335 {
 336    image->width    = image->region->width;
 337    image->height   = image->region->height;
 338    image->tile_x = 0;
 339    image->tile_y = 0;
 340    image->has_depthstencil = false;
 341 }
 342
 343 static inline uint32_t
 344 intel_dri_format(GLuint format)
 345 {
 346    switch (format) {
 347    case MESA_FORMAT_RGB565:
 348       return __DRI_IMAGE_FORMAT_RGB565;
 349    case MESA_FORMAT_XRGB8888:
 350       return __DRI_IMAGE_FORMAT_XRGB8888;
 351    case MESA_FORMAT_ARGB8888:
 352       return __DRI_IMAGE_FORMAT_ARGB8888;
 353    case MESA_FORMAT_RGBA8888_REV:
 354       return __DRI_IMAGE_FORMAT_ABGR8888;
 355    case MESA_FORMAT_R8:
 356       return __DRI_IMAGE_FORMAT_R8;
 357    case MESA_FORMAT_RG88:
 358       return __DRI_IMAGE_FORMAT_GR88;
 359    }
 360
 361    return MESA_FORMAT_NONE;
 362 }
 363
 364 static __DRIimage *
 365 intel_create_image_from_name(__DRIscreen *screen,
 366                              int width, int height, int format,
 367                              int name, int pitch, void *loaderPrivate)
 368 {
 369     struct intel_screen *intelScreen = screen->driverPrivate;
 370     __DRIimage *image;
 371     int cpp;
 372
 373     image = intel_allocate_image(format, loaderPrivate);
 374     if (image->format == MESA_FORMAT_NONE)
 375        cpp = 1;
 376     else
 377        cpp = _mesa_get_format_bytes(image->format);
 378     image->region = intel_region_alloc_for_handle(intelScreen,
 379                                                   cpp, width, height,
 380                                                   pitch, name, "image");
 381     if (image->region == NULL) {
 382        free(image);
 383        return NULL;
 384     }
 385
 386     intel_setup_image_from_dimensions(image);
 387
 388     return image;
 389 }
 390
 391 static __DRIimage *
 392 intel_create_image_from_renderbuffer(__DRIcontext *context,
 393                                      int renderbuffer, void *loaderPrivate)
 394 {
 395    __DRIimage *image;
 396    struct intel_context *intel = context->driverPrivate;
 397    struct gl_renderbuffer *rb;
 398    struct intel_renderbuffer *irb;
 399
 400    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 401    if (!rb) {
 402       _mesa_error(&intel->ctx,
 403                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 404       return NULL;
 405    }
 406
 407    irb = intel_renderbuffer(rb);
 408    image = calloc(1, sizeof *image);
 409    if (image == NULL)
 410       return NULL;
 411
 412    image->internal_format = rb->InternalFormat;
 413    image->format = rb->Format;
 414    image->offset = 0;
 415    image->data = loaderPrivate;
 416    intel_region_reference(&image->region, irb->mt->region);
 417    intel_setup_image_from_dimensions(image);
 418    image->dri_format = intel_dri_format(image->format);
 419    image->has_depthstencil = irb->mt->stencil_mt? true : false;
 420
 421    return image;
 422 }
 423
 424 static __DRIimage *
 425 intel_create_image_from_texture(__DRIcontext *context, int target,
 426                                 unsigned texture, int zoffset,
 427                                 int level,
 428                                 unsigned *error,
 429                                 void *loaderPrivate)
 430 {
 431    __DRIimage *image;
 432    struct intel_context *intel = context->driverPrivate;
 433    struct gl_texture_object *obj;
 434    struct intel_texture_object *iobj;
 435    GLuint face = 0;
 436
 437    obj = _mesa_lookup_texture(&intel->ctx, texture);
 438    if (!obj || obj->Target != target) {
 439       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 440       return NULL;
 441    }
 442
 443    if (target == GL_TEXTURE_CUBE_MAP)
 444       face = zoffset;
 445
 446    _mesa_test_texobj_completeness(&intel->ctx, obj);
 447    iobj = intel_texture_object(obj);
 448    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 449       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 450       return NULL;
 451    }
 452
 453    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 454       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 455       return NULL;
 456    }
 457
 458    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 459       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 460       return NULL;
 461    }
 462    image = calloc(1, sizeof *image);
 463    if (image == NULL) {
 464       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 465       return NULL;
 466    }
 467
 468    image->internal_format = obj->Image[face][level]->InternalFormat;
 469    image->format = obj->Image[face][level]->TexFormat;
 470    image->data = loaderPrivate;
 471    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 472    image->dri_format = intel_dri_format(image->format);
 473    image->has_depthstencil = iobj->mt->stencil_mt? true : false;
 474    if (image->dri_format == MESA_FORMAT_NONE) {
 475       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 476       free(image);
 477       return NULL;
 478    }
 479
 480    *error = __DRI_IMAGE_ERROR_SUCCESS;
 481    return image;
 482 }
 483
 484 static void
 485 intel_destroy_image(__DRIimage *image)
 486 {
 487     intel_region_release(&image->region);
 488     free(image);
 489 }
 490
 491 static __DRIimage *
 492 intel_create_image(__DRIscreen *screen,
 493                    int width, int height, int format,
 494                    unsigned int use,
 495                    void *loaderPrivate)
 496 {
 497    __DRIimage *image;
 498    struct intel_screen *intelScreen = screen->driverPrivate;
 499    uint32_t tiling;
 500    int cpp;
 501
 502    tiling = I915_TILING_X;
 503    if (use & __DRI_IMAGE_USE_CURSOR) {
 504       if (width != 64 || height != 64)
 505          return NULL;
 506       tiling = I915_TILING_NONE;
 507    }
 508
 509    image = intel_allocate_image(format, loaderPrivate);
 510    cpp = _mesa_get_format_bytes(image->format);
 511    image->region =
 512       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 513    if (image->region == NULL) {
 514       free(image);
 515       return NULL;
 516    }
 517
 518    intel_setup_image_from_dimensions(image);
 519
 520    return image;
 521 }
 522
 523 static GLboolean
 524 intel_query_image(__DRIimage *image, int attrib, int *value)
 525 {
 526    switch (attrib) {
 527    case __DRI_IMAGE_ATTRIB_STRIDE:
 528       *value = image->region->pitch;
 529       return true;
 530    case __DRI_IMAGE_ATTRIB_HANDLE:
 531       *value = image->region->bo->handle;
 532       return true;
 533    case __DRI_IMAGE_ATTRIB_NAME:
 534       return intel_region_flink(image->region, (uint32_t *) value);
 535    case __DRI_IMAGE_ATTRIB_FORMAT:
 536       *value = image->dri_format;
 537       return true;
 538    case __DRI_IMAGE_ATTRIB_WIDTH:
 539       *value = image->region->width;
 540       return true;
 541    case __DRI_IMAGE_ATTRIB_HEIGHT:
 542       *value = image->region->height;
 543       return true;
 544    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 545       if (image->planar_format == NULL)
 546          return false;
 547       *value = image->planar_format->components;
 548       return true;
 549   default:
 550       return false;
 551    }
 552 }
 553
 554 static __DRIimage *
 555 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 556 {
 557    __DRIimage *image;
 558
 559    image = calloc(1, sizeof *image);
 560    if (image == NULL)
 561       return NULL;
 562
 563    intel_region_reference(&image->region, orig_image->region);
 564    if (image->region == NULL) {
 565       free(image);
 566       return NULL;
 567    }
 568
 569    image->internal_format = orig_image->internal_format;
 570    image->planar_format   = orig_image->planar_format;
 571    image->dri_format      = orig_image->dri_format;
 572    image->format          = orig_image->format;
 573    image->offset          = orig_image->offset;
 574    image->width           = orig_image->width;
 575    image->height          = orig_image->height;
 576    image->tile_x          = orig_image->tile_x;
 577    image->tile_y          = orig_image->tile_y;
 578    image->has_depthstencil = orig_image->has_depthstencil;
 579    image->data            = loaderPrivate;
 580
 581    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 582    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 583
 584    return image;
 585 }
 586
 587 static GLboolean
 588 intel_validate_usage(__DRIimage *image, unsigned int use)
 589 {
 590    if (use & __DRI_IMAGE_USE_CURSOR) {
 591       if (image->region->width != 64 || image->region->height != 64)
 592          return GL_FALSE;
 593    }
 594
 595    return GL_TRUE;
 596 }
 597
 598 static __DRIimage *
 599 intel_create_image_from_names(__DRIscreen *screen,
 600                               int width, int height, int fourcc,
 601                               int *names, int num_names,
 602                               int *strides, int *offsets,
 603                               void *loaderPrivate)
 604 {
 605     struct intel_image_format *f = NULL;
 606     __DRIimage *image;
 607     int i, index;
 608
 609     if (screen == NULL || names == NULL || num_names != 1)
 610         return NULL;
 611
 612     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 613         if (intel_image_formats[i].fourcc == fourcc) {
 614            f = &intel_image_formats[i];
 615         }
 616     }
 617
 618     if (f == NULL)
 619         return NULL;
 620
 621     image = intel_create_image_from_name(screen, width, height,
 622                                          __DRI_IMAGE_FORMAT_NONE,
 623                                          names[0], strides[0],
 624                                          loaderPrivate);
 625
 626     if (image == NULL)
 627         return NULL;
 628
 629     image->planar_format = f;
 630     for (i = 0; i < f->nplanes; i++) {
 631         index = f->planes[i].buffer_index;
 632         image->offsets[index] = offsets[index];
 633         image->strides[index] = strides[index];
 634     }
 635
 636     return image;
 637 }
 638
 639 static __DRIimage *
 640 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 641 {
 642     int width, height, offset, stride, dri_format, index;
 643     struct intel_image_format *f;
 644     uint32_t mask_x, mask_y;
 645     __DRIimage *image;
 646
 647     if (parent == NULL || parent->planar_format == NULL)
 648         return NULL;
 649
 650     f = parent->planar_format;
 651
 652     if (plane >= f->nplanes)
 653         return NULL;
 654
 655     width = parent->region->width >> f->planes[plane].width_shift;
 656     height = parent->region->height >> f->planes[plane].height_shift;
 657     dri_format = f->planes[plane].dri_format;
 658     index = f->planes[plane].buffer_index;
 659     offset = parent->offsets[index];
 660     stride = parent->strides[index];
 661
 662     image = intel_allocate_image(dri_format, loaderPrivate);
 663     if (offset + height * stride > parent->region->bo->size) {
 664        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 665        free(image);
 666        return NULL;
 667     }
 668
 669     image->region = calloc(sizeof(*image->region), 1);
 670     if (image->region == NULL) {
 671        free(image);
 672        return NULL;
 673     }
 674
 675     image->region->cpp = _mesa_get_format_bytes(image->format);
 676     image->region->width = width;
 677     image->region->height = height;
 678     image->region->pitch = stride;
 679     image->region->refcount = 1;
 680     image->region->bo = parent->region->bo;
 681     drm_intel_bo_reference(image->region->bo);
 682     image->region->tiling = parent->region->tiling;
 683     image->region->screen = parent->region->screen;
 684     image->offset = offset;
 685     intel_setup_image_from_dimensions(image);
 686
 687     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 688     if (offset & mask_x)
 689        _mesa_warning(NULL,
 690                      "intel_create_sub_image: offset not on tile boundary");
 691
 692     return image;
 693 }
 694
 695 static struct __DRIimageExtensionRec intelImageExtension = {
 696     .base = { __DRI_IMAGE, 6 },
 697
 698     .createImageFromName                = intel_create_image_from_name,
 699     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 700     .destroyImage                       = intel_destroy_image,
 701     .createImage                        = intel_create_image,
 702     .queryImage                         = intel_query_image,
 703     .dupImage                           = intel_dup_image,
 704     .validateUsage                      = intel_validate_usage,
 705     .createImageFromNames               = intel_create_image_from_names,
 706     .fromPlanar                         = intel_from_planar,
 707     .createImageFromTexture             = intel_create_image_from_texture
 708 };
 709
 710 static const __DRIextension *intelScreenExtensions[] = {
 711     &intelTexBufferExtension.base,
 712     &intelFlushExtension.base,
 713     &intelImageExtension.base,
 714     &dri2ConfigQueryExtension.base,
 715     NULL
 716 };
 717
 718 static bool
 719 intel_get_param(__DRIscreen *psp, int param, int *value)
 720 {
 721    int ret;
 722    struct drm_i915_getparam gp;
 723
 724    memset(&gp, 0, sizeof(gp));
 725    gp.param = param;
 726    gp.value = value;
 727
 728    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 729    if (ret) {
 730       if (ret != -EINVAL)
 731          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 732       return false;
 733    }
 734
 735    return true;
 736 }
 737
 738 static bool
 739 intel_get_boolean(__DRIscreen *psp, int param)
 740 {
 741    int value = 0;
 742    return intel_get_param(psp, param, &value) && value;
 743 }
 744
 745 static void
 746 nop_callback(GLuint key, void *data, void *userData)
 747 {
 748 }
 749
 750 static void
 751 intelDestroyScreen(__DRIscreen * sPriv)
 752 {
 753    struct intel_screen *intelScreen = sPriv->driverPrivate;
 754
 755    dri_bufmgr_destroy(intelScreen->bufmgr);
 756    driDestroyOptionInfo(&intelScreen->optionCache);
 757
 758    /* Some regions may still have references to them at this point, so
 759     * flush the hash table to prevent _mesa_DeleteHashTable() from
 760     * complaining about the hash not being empty; */
 761    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 762    _mesa_DeleteHashTable(intelScreen->named_regions);
 763
 764    free(intelScreen);
 765    sPriv->driverPrivate = NULL;
 766 }
 767
 768
 769 /**
 770  * This is called when we need to set up GL rendering to a new X window.
 771  */
 772 static GLboolean
 773 intelCreateBuffer(__DRIscreen * driScrnPriv,
 774                   __DRIdrawable * driDrawPriv,
 775                   const struct gl_config * mesaVis, GLboolean isPixmap)
 776 {
 777    struct intel_renderbuffer *rb;
 778    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 779    gl_format rgbFormat;
 780    unsigned num_samples = intel_quantize_num_samples(screen, mesaVis->samples);
 781    struct gl_framebuffer *fb;
 782
 783    if (isPixmap)
 784       return false;
 785
 786    fb = CALLOC_STRUCT(gl_framebuffer);
 787    if (!fb)
 788       return false;
 789
 790    _mesa_initialize_window_framebuffer(fb, mesaVis);
 791
 792    if (mesaVis->redBits == 5)
 793       rgbFormat = MESA_FORMAT_RGB565;
 794    else if (mesaVis->sRGBCapable)
 795       rgbFormat = MESA_FORMAT_SARGB8;
 796    else if (mesaVis->alphaBits == 0)
 797       rgbFormat = MESA_FORMAT_XRGB8888;
 798    else
 799       rgbFormat = MESA_FORMAT_ARGB8888;
 800
 801    /* setup the hardware-based renderbuffers */
 802    rb = intel_create_renderbuffer(rgbFormat, num_samples);
 803    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 804
 805    if (mesaVis->doubleBufferMode) {
 806       rb = intel_create_renderbuffer(rgbFormat, num_samples);
 807       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 808    }
 809
 810    /*
 811     * Assert here that the gl_config has an expected depth/stencil bit
 812     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 813     * which constructs the advertised configs.)
 814     */
 815    if (mesaVis->depthBits == 24) {
 816       assert(mesaVis->stencilBits == 8);
 817
 818       if (screen->hw_has_separate_stencil) {
 819          rb = intel_create_private_renderbuffer(MESA_FORMAT_X8_Z24,
 820                                                 num_samples);
 821          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 822          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8,
 823                                                 num_samples);
 824          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 825       } else {
 826          /*
 827           * Use combined depth/stencil. Note that the renderbuffer is
 828           * attached to two attachment points.
 829           */
 830          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24,
 831                                                 num_samples);
 832          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 833          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 834       }
 835    }
 836    else if (mesaVis->depthBits == 16) {
 837       assert(mesaVis->stencilBits == 0);
 838       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16,
 839                                              num_samples);
 840       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 841    }
 842    else {
 843       assert(mesaVis->depthBits == 0);
 844       assert(mesaVis->stencilBits == 0);
 845    }
 846
 847    /* now add any/all software-based renderbuffers we may need */
 848    _swrast_add_soft_renderbuffers(fb,
 849                                   false, /* never sw color */
 850                                   false, /* never sw depth */
 851                                   false, /* never sw stencil */
 852                                   mesaVis->accumRedBits > 0,
 853                                   false, /* never sw alpha */
 854                                   false  /* never sw aux */ );
 855    driDrawPriv->driverPrivate = fb;
 856
 857    return true;
 858 }
 859
 860 static void
 861 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 862 {
 863     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 864
 865     _mesa_reference_framebuffer(&fb, NULL);
 866 }
 867
 868 /* There are probably better ways to do this, such as an
 869  * init-designated function to register chipids and createcontext
 870  * functions.
 871  */
 872 extern bool
 873 i830CreateContext(int api,
 874                   const struct gl_config *mesaVis,
 875                   __DRIcontext *driContextPriv,
 876                   unsigned major_version,
 877                   unsigned minor_version,
 878                   unsigned *error,
 879                   void *sharedContextPrivate);
 880
 881 extern bool
 882 i915CreateContext(int api,
 883                   const struct gl_config *mesaVis,
 884                   __DRIcontext *driContextPriv,
 885                   unsigned major_version,
 886                   unsigned minor_version,
 887                   unsigned *error,
 888                   void *sharedContextPrivate);
 889 extern bool
 890 brwCreateContext(int api,
 891                  const struct gl_config *mesaVis,
 892                  __DRIcontext *driContextPriv,
 893                  unsigned major_version,
 894                  unsigned minor_version,
 895                  uint32_t flags,
 896                  unsigned *error,
 897                  void *sharedContextPrivate);
 898
 899 static GLboolean
 900 intelCreateContext(gl_api api,
 901                    const struct gl_config * mesaVis,
 902                    __DRIcontext * driContextPriv,
 903                    unsigned major_version,
 904                    unsigned minor_version,
 905                    uint32_t flags,
 906                    unsigned *error,
 907                    void *sharedContextPrivate)
 908 {
 909    bool success = false;
 910
 911 #ifdef I915
 912    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 913    struct intel_screen *intelScreen = sPriv->driverPrivate;
 914
 915    if (IS_9XX(intelScreen->deviceID)) {
 916       success = i915CreateContext(api, mesaVis, driContextPriv,
 917                                   major_version, minor_version, error,
 918                                   sharedContextPrivate);
 919    } else {
 920       intelScreen->no_vbo = true;
 921       success = i830CreateContext(api, mesaVis, driContextPriv,
 922                                   major_version, minor_version, error,
 923                                   sharedContextPrivate);
 924    }
 925 #else
 926    success = brwCreateContext(api, mesaVis,
 927                               driContextPriv,
 928                               major_version, minor_version, flags,
 929                               error, sharedContextPrivate);
 930 #endif
 931
 932    if (success)
 933       return true;
 934
 935    if (driContextPriv->driverPrivate != NULL)
 936       intelDestroyContext(driContextPriv);
 937
 938    return false;
 939 }
 940
 941 static bool
 942 intel_init_bufmgr(struct intel_screen *intelScreen)
 943 {
 944    __DRIscreen *spriv = intelScreen->driScrnPriv;
 945    int num_fences = 0;
 946
 947    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 948
 949    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 950    if (intelScreen->bufmgr == NULL) {
 951       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 952               __func__, __LINE__);
 953       return false;
 954    }
 955
 956    if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
 957        num_fences == 0) {
 958       fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
 959       return false;
 960    }
 961
 962    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 963
 964    intelScreen->named_regions = _mesa_NewHashTable();
 965
 966    intelScreen->relaxed_relocations = 0;
 967    intelScreen->relaxed_relocations |=
 968       intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0;
 969
 970    return true;
 971 }
 972
 973 /**
 974  * Override intel_screen.hw_has_separate_stencil with environment variable
 975  * INTEL_SEPARATE_STENCIL.
 976  *
 977  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
 978  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
 979  * is ignored.
 980  */
 981 static void
 982 intel_override_separate_stencil(struct intel_screen *screen)
 983 {
 984    const char *s = getenv("INTEL_SEPARATE_STENCIL");
 985    if (!s) {
 986       return;
 987    } else if (!strncmp("0", s, 2)) {
 988       screen->hw_has_separate_stencil = false;
 989    } else if (!strncmp("1", s, 2)) {
 990       screen->hw_has_separate_stencil = true;
 991    } else {
 992       fprintf(stderr,
 993               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
 994               "invalid value and is ignored", s);
 995    }
 996 }
 997
 998 static bool
 999 intel_detect_swizzling(struct intel_screen *screen)
1000 {
1001    drm_intel_bo *buffer;
1002    unsigned long flags = 0;
1003    unsigned long aligned_pitch;
1004    uint32_t tiling = I915_TILING_X;
1005    uint32_t swizzle_mode = 0;
1006
1007    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
1008                                      64, 64, 4,
1009                                      &tiling, &aligned_pitch, flags);
1010    if (buffer == NULL)
1011       return false;
1012
1013    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
1014    drm_intel_bo_unreference(buffer);
1015
1016    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
1017       return false;
1018    else
1019       return true;
1020 }
1021
1022 static __DRIconfig**
1023 intel_screen_make_configs(__DRIscreen *dri_screen)
1024 {
1025    static const gl_format formats[] = {
1026       MESA_FORMAT_RGB565,
1027       MESA_FORMAT_ARGB8888
1028    };
1029
1030    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1031    static const GLenum back_buffer_modes[] = {
1032        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1033    };
1034
1035    static const uint8_t singlesample_samples[1] = {0};
1036    static const uint8_t multisample_samples[2]  = {4, 8};
1037
1038    struct intel_screen *screen = dri_screen->driverPrivate;
1039    uint8_t depth_bits[4], stencil_bits[4];
1040    __DRIconfig **configs = NULL;
1041
1042    /* Generate singlesample configs without accumulation buffer. */
1043    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1044       __DRIconfig **new_configs;
1045       int num_depth_stencil_bits = 2;
1046
1047       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1048        * buffer that has a different number of bits per pixel than the color
1049        * buffer, gen >= 6 supports this.
1050        */
1051       depth_bits[0] = 0;
1052       stencil_bits[0] = 0;
1053
1054       if (formats[i] == MESA_FORMAT_RGB565) {
1055          depth_bits[1] = 16;
1056          stencil_bits[1] = 0;
1057          if (screen->gen >= 6) {
1058              depth_bits[2] = 24;
1059              stencil_bits[2] = 8;
1060              num_depth_stencil_bits = 3;
1061          }
1062       } else {
1063          depth_bits[1] = 24;
1064          stencil_bits[1] = 8;
1065       }
1066
1067       new_configs = driCreateConfigs(formats[i],
1068                                      depth_bits,
1069                                      stencil_bits,
1070                                      num_depth_stencil_bits,
1071                                      back_buffer_modes, 2,
1072                                      singlesample_samples, 1,
1073                                      false);
1074       configs = driConcatConfigs(configs, new_configs);
1075    }
1076
1077    /* Generate the minimum possible set of configs that include an
1078     * accumulation buffer.
1079     */
1080    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1081       __DRIconfig **new_configs;
1082
1083       if (formats[i] == MESA_FORMAT_RGB565) {
1084          depth_bits[0] = 16;
1085          stencil_bits[0] = 0;
1086       } else {
1087          depth_bits[0] = 24;
1088          stencil_bits[0] = 8;
1089       }
1090
1091       new_configs = driCreateConfigs(formats[i],
1092                                      depth_bits, stencil_bits, 1,
1093                                      back_buffer_modes, 1,
1094                                      singlesample_samples, 1,
1095                                      true);
1096       configs = driConcatConfigs(configs, new_configs);
1097    }
1098
1099    /* Generate multisample configs.
1100     *
1101     * This loop breaks early, and hence is a no-op, on gen < 6.
1102     *
1103     * Multisample configs must follow the singlesample configs in order to
1104     * work around an X server bug present in 1.12. The X server chooses to
1105     * associate the first listed RGBA888-Z24S8 config, regardless of its
1106     * sample count, with the 32-bit depth visual used for compositing.
1107     *
1108     * Only doublebuffer configs with GLX_SWAP_UNDEFINED_OML behavior are
1109     * supported.  Singlebuffer configs are not supported because no one wants
1110     * them.
1111     */
1112    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1113       if (screen->gen < 6)
1114          break;
1115
1116       __DRIconfig **new_configs;
1117       const int num_depth_stencil_bits = 2;
1118       int num_msaa_modes = 0;
1119
1120       depth_bits[0] = 0;
1121       stencil_bits[0] = 0;
1122
1123       if (formats[i] == MESA_FORMAT_RGB565) {
1124          depth_bits[1] = 16;
1125          stencil_bits[1] = 0;
1126       } else {
1127          depth_bits[1] = 24;
1128          stencil_bits[1] = 8;
1129       }
1130
1131       if (screen->gen >= 7)
1132          num_msaa_modes = 2;
1133       else if (screen->gen == 6)
1134          num_msaa_modes = 1;
1135
1136       new_configs = driCreateConfigs(formats[i],
1137                                      depth_bits,
1138                                      stencil_bits,
1139                                      num_depth_stencil_bits,
1140                                      back_buffer_modes, 1,
1141                                      multisample_samples,
1142                                      num_msaa_modes,
1143                                      false);
1144       configs = driConcatConfigs(configs, new_configs);
1145    }
1146
1147    if (configs == NULL) {
1148       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1149               __LINE__);
1150       return NULL;
1151    }
1152
1153    return configs;
1154 }
1155
1156 static void
1157 set_max_gl_versions(struct intel_screen *screen)
1158 {
1159    switch (screen->gen) {
1160    case 7:
1161       if (screen->kernel_has_gen7_sol_reset) {
1162          screen->max_gl_core_version = 31;
1163          screen->max_gl_compat_version = 30;
1164          screen->max_gl_es1_version = 11;
1165          screen->max_gl_es2_version = 30;
1166       } else {
1167          screen->max_gl_core_version = 0;
1168          screen->max_gl_compat_version = 21;
1169          screen->max_gl_es1_version = 11;
1170          screen->max_gl_es2_version = 20;
1171       }
1172       break;
1173    case 6:
1174       screen->max_gl_core_version = 31;
1175       screen->max_gl_compat_version = 30;
1176       screen->max_gl_es1_version = 11;
1177       screen->max_gl_es2_version = 20;
1178       break;
1179    case 5:
1180    case 4:
1181       screen->max_gl_core_version = 0;
1182       screen->max_gl_compat_version = 21;
1183       screen->max_gl_es1_version = 11;
1184       screen->max_gl_es2_version = 20;
1185       break;
1186    case 3: {
1187       bool has_fragment_shader = driQueryOptionb(&screen->optionCache, "fragment_shader");
1188       bool has_occlusion_query = driQueryOptionb(&screen->optionCache, "stub_occlusion_query");
1189
1190       screen->max_gl_core_version = 0;
1191       screen->max_gl_es1_version = 11;
1192
1193       if (has_fragment_shader && has_occlusion_query) {
1194          screen->max_gl_compat_version = 21;
1195       } else {
1196          screen->max_gl_compat_version = 14;
1197       }
1198
1199       if (has_fragment_shader) {
1200          screen->max_gl_es2_version = 20;
1201       } else {
1202          screen->max_gl_es2_version = 0;
1203       }
1204
1205       break;
1206    }
1207    case 2:
1208       screen->max_gl_core_version = 0;
1209       screen->max_gl_compat_version = 13;
1210       screen->max_gl_es1_version = 11;
1211       screen->max_gl_es2_version = 0;
1212       break;
1213    default:
1214       assert(!"unrecognized intel_screen::gen");
1215       break;
1216    }
1217
1218 #ifndef FEATURE_ES1
1219    screen->max_gl_es1_version = 0;
1220 #endif
1221
1222 #ifndef FEATURE_ES2
1223    screen->max_gl_es2_version = 0;
1224 #endif
1225 }
1226
1227 /**
1228  * This is the driver specific part of the createNewScreen entry point.
1229  * Called when using DRI2.
1230  *
1231  * \return the struct gl_config supported by this driver
1232  */
1233 static const
1234 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1235 {
1236    struct intel_screen *intelScreen;
1237
1238    if (psp->dri2.loader->base.version <= 2 ||
1239        psp->dri2.loader->getBuffersWithFormat == NULL) {
1240       fprintf(stderr,
1241               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1242               "support required\n");
1243       return false;
1244    }
1245
1246    /* Allocate the private area */
1247    intelScreen = calloc(1, sizeof *intelScreen);
1248    if (!intelScreen) {
1249       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1250       return false;
1251    }
1252    /* parse information in __driConfigOptions */
1253    driParseOptionInfo(&intelScreen->optionCache,
1254                       __driConfigOptions, __driNConfigOptions);
1255
1256    intelScreen->driScrnPriv = psp;
1257    psp->driverPrivate = (void *) intelScreen;
1258
1259    if (!intel_init_bufmgr(intelScreen))
1260        return false;
1261
1262    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1263
1264    intelScreen->kernel_has_gen7_sol_reset =
1265       intel_get_boolean(intelScreen->driScrnPriv,
1266                         I915_PARAM_HAS_GEN7_SOL_RESET);
1267
1268    if (IS_GEN7(intelScreen->deviceID)) {
1269       intelScreen->gen = 7;
1270    } else if (IS_GEN6(intelScreen->deviceID)) {
1271       intelScreen->gen = 6;
1272    } else if (IS_GEN5(intelScreen->deviceID)) {
1273       intelScreen->gen = 5;
1274    } else if (IS_965(intelScreen->deviceID)) {
1275       intelScreen->gen = 4;
1276    } else if (IS_9XX(intelScreen->deviceID)) {
1277       intelScreen->gen = 3;
1278    } else {
1279       intelScreen->gen = 2;
1280    }
1281
1282    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
1283    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
1284
1285    int has_llc = 0;
1286    bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
1287                                   &has_llc);
1288    if (success && has_llc)
1289       intelScreen->hw_has_llc = true;
1290    else if (!success && intelScreen->gen >= 6)
1291       intelScreen->hw_has_llc = true;
1292
1293    intel_override_separate_stencil(intelScreen);
1294
1295    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1296
1297    set_max_gl_versions(intelScreen);
1298
1299    psp->api_mask = (1 << __DRI_API_OPENGL);
1300    if (intelScreen->max_gl_es1_version > 0)
1301       psp->api_mask |= (1 << __DRI_API_GLES);
1302    if (intelScreen->max_gl_es2_version > 0)
1303       psp->api_mask |= (1 << __DRI_API_GLES2);
1304    if (intelScreen->max_gl_es2_version >= 30)
1305       psp->api_mask |= (1 << __DRI_API_GLES3);
1306
1307    psp->extensions = intelScreenExtensions;
1308
1309    return (const __DRIconfig**) intel_screen_make_configs(psp);
1310 }
1311
1312 struct intel_buffer {
1313    __DRIbuffer base;
1314    struct intel_region *region;
1315 };
1316
1317 static __DRIbuffer *
1318 intelAllocateBuffer(__DRIscreen *screen,
1319                     unsigned attachment, unsigned format,
1320                     int width, int height)
1321 {
1322    struct intel_buffer *intelBuffer;
1323    struct intel_screen *intelScreen = screen->driverPrivate;
1324
1325    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1326           attachment == __DRI_BUFFER_BACK_LEFT);
1327
1328    intelBuffer = calloc(1, sizeof *intelBuffer);
1329    if (intelBuffer == NULL)
1330       return NULL;
1331
1332    /* The front and back buffers are color buffers, which are X tiled. */
1333    intelBuffer->region = intel_region_alloc(intelScreen,
1334                                             I915_TILING_X,
1335                                             format / 8,
1336                                             width,
1337                                             height,
1338                                             true);
1339
1340    if (intelBuffer->region == NULL) {
1341            free(intelBuffer);
1342            return NULL;
1343    }
1344
1345    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1346
1347    intelBuffer->base.attachment = attachment;
1348    intelBuffer->base.cpp = intelBuffer->region->cpp;
1349    intelBuffer->base.pitch = intelBuffer->region->pitch;
1350
1351    return &intelBuffer->base;
1352 }
1353
1354 static void
1355 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1356 {
1357    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1358
1359    intel_region_release(&intelBuffer->region);
1360    free(intelBuffer);
1361 }
1362
1363
1364 const struct __DriverAPIRec driDriverAPI = {
1365    .InitScreen           = intelInitScreen2,
1366    .DestroyScreen        = intelDestroyScreen,
1367    .CreateContext        = intelCreateContext,
1368    .DestroyContext       = intelDestroyContext,
1369    .CreateBuffer         = intelCreateBuffer,
1370    .DestroyBuffer        = intelDestroyBuffer,
1371    .MakeCurrent          = intelMakeCurrent,
1372    .UnbindContext        = intelUnbindContext,
1373    .AllocateBuffer       = intelAllocateBuffer,
1374    .ReleaseBuffer        = intelReleaseBuffer
1375 };
1376
1377 /* This is the table of extensions that the loader will dlsym() for. */
1378 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1379     &driCoreExtension.base,
1380     &driDRI2Extension.base,
1381     NULL
1382 };