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/version.h"
  38 #include "swrast/s_renderbuffer.h"
  39
  40 #include "utils.h"
  41 #include "xmlpool.h"
  42
  43 PUBLIC const char __driConfigOptions[] =
  44    DRI_CONF_BEGIN
  45    DRI_CONF_SECTION_PERFORMANCE
  46       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  47       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  48        * DRI_CONF_BO_REUSE_ALL
  49        */
  50       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  51          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  52             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  53             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  54          DRI_CONF_DESC_END
  55       DRI_CONF_OPT_END
  56
  57       DRI_CONF_OPT_BEGIN_B(hiz, "true")
  58          DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
  59       DRI_CONF_OPT_END
  60
  61       DRI_CONF_OPT_BEGIN_B(early_z, "false")
  62          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  63       DRI_CONF_OPT_END
  64
  65    DRI_CONF_SECTION_END
  66    DRI_CONF_SECTION_QUALITY
  67       DRI_CONF_FORCE_S3TC_ENABLE("false")
  68       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  69    DRI_CONF_SECTION_END
  70    DRI_CONF_SECTION_DEBUG
  71       DRI_CONF_NO_RAST("false")
  72       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  73       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  74       DRI_CONF_DISABLE_THROTTLING("false")
  75       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  76       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  77       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  78
  79       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  80          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  81       DRI_CONF_OPT_END
  82    DRI_CONF_SECTION_END
  83 DRI_CONF_END;
  84
  85 const GLuint __driNConfigOptions = 14;
  86
  87 #include "intel_batchbuffer.h"
  88 #include "intel_buffers.h"
  89 #include "intel_bufmgr.h"
  90 #include "intel_chipset.h"
  91 #include "intel_fbo.h"
  92 #include "intel_mipmap_tree.h"
  93 #include "intel_screen.h"
  94 #include "intel_tex.h"
  95 #include "intel_regions.h"
  96
  97 #ifndef I915
  98 #include "brw_context.h"
  99 #endif
 100
 101 #include "i915_drm.h"
 102
 103 #ifdef USE_NEW_INTERFACE
 104 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 105 #endif /*USE_NEW_INTERFACE */
 106
 107 /**
 108  * For debugging purposes, this returns a time in seconds.
 109  */
 110 double
 111 get_time(void)
 112 {
 113    struct timespec tp;
 114
 115    clock_gettime(CLOCK_MONOTONIC, &tp);
 116
 117    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 118 }
 119
 120 void
 121 aub_dump_bmp(struct gl_context *ctx)
 122 {
 123    struct gl_framebuffer *fb = ctx->DrawBuffer;
 124
 125    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 126       struct intel_renderbuffer *irb =
 127          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 128
 129       if (irb && irb->mt) {
 130          enum aub_dump_bmp_format format;
 131
 132          switch (irb->Base.Base.Format) {
 133          case MESA_FORMAT_ARGB8888:
 134          case MESA_FORMAT_XRGB8888:
 135             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 136             break;
 137          default:
 138             continue;
 139          }
 140
 141          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 142          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 143                                        irb->draw_x,
 144                                        irb->draw_y,
 145                                        irb->Base.Base.Width,
 146                                        irb->Base.Base.Height,
 147                                        format,
 148                                        irb->mt->region->pitch,
 149                                        0);
 150       }
 151    }
 152 }
 153
 154 static const __DRItexBufferExtension intelTexBufferExtension = {
 155    .base = { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 156
 157    .setTexBuffer        = intelSetTexBuffer,
 158    .setTexBuffer2       = intelSetTexBuffer2,
 159    .releaseTexBuffer    = NULL,
 160 };
 161
 162 static void
 163 intelDRI2Flush(__DRIdrawable *drawable)
 164 {
 165    GET_CURRENT_CONTEXT(ctx);
 166    struct intel_context *intel = intel_context(ctx);
 167    if (intel == NULL)
 168       return;
 169
 170    if (intel->gen < 4)
 171       INTEL_FIREVERTICES(intel);
 172
 173    intel_downsample_for_dri2_flush(intel, drawable);
 174    intel->need_throttle = true;
 175
 176    if (intel->batch.used)
 177       intel_batchbuffer_flush(intel);
 178
 179    if (INTEL_DEBUG & DEBUG_AUB) {
 180       aub_dump_bmp(ctx);
 181    }
 182 }
 183
 184 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 185     .base = { __DRI2_FLUSH, 3 },
 186
 187     .flush              = intelDRI2Flush,
 188     .invalidate         = dri2InvalidateDrawable,
 189 };
 190
 191 static struct intel_image_format intel_image_formats[] = {
 192    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 193      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 194
 195    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 196      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 197
 198    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 199      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 200        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 201        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 202
 203    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 204      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 205        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 206        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 207
 208    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 209      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 210        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 211        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 212
 213    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 214      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 215        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 216        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 217
 218    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 219      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 220        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 221        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 222
 223    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 224      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 225        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 226
 227    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 228      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 229        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 230
 231    /* For YUYV buffers, we set up two overlapping DRI images and treat
 232     * them as planar buffers in the compositors.  Plane 0 is GR88 and
 233     * samples YU or YV pairs and places Y into the R component, while
 234     * plane 1 is ARGB and samples YUYV clusters and places pairs and
 235     * places U into the G component and V into A.  This lets the
 236     * texture sampler interpolate the Y components correctly when
 237     * sampling from plane 0, and interpolate U and V correctly when
 238     * sampling from plane 1. */
 239    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 240      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 241        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
 242 };
 243
 244 static __DRIimage *
 245 intel_allocate_image(int dri_format, void *loaderPrivate)
 246 {
 247     __DRIimage *image;
 248
 249     image = calloc(1, sizeof *image);
 250     if (image == NULL)
 251         return NULL;
 252
 253     image->dri_format = dri_format;
 254     image->offset = 0;
 255
 256     switch (dri_format) {
 257     case __DRI_IMAGE_FORMAT_RGB565:
 258        image->format = MESA_FORMAT_RGB565;
 259        break;
 260     case __DRI_IMAGE_FORMAT_XRGB8888:
 261        image->format = MESA_FORMAT_XRGB8888;
 262        break;
 263     case __DRI_IMAGE_FORMAT_ARGB8888:
 264        image->format = MESA_FORMAT_ARGB8888;
 265        break;
 266     case __DRI_IMAGE_FORMAT_ABGR8888:
 267        image->format = MESA_FORMAT_RGBA8888_REV;
 268        break;
 269     case __DRI_IMAGE_FORMAT_XBGR8888:
 270        image->format = MESA_FORMAT_RGBX8888_REV;
 271        break;
 272     case __DRI_IMAGE_FORMAT_R8:
 273        image->format = MESA_FORMAT_R8;
 274        break;
 275     case __DRI_IMAGE_FORMAT_GR88:
 276        image->format = MESA_FORMAT_GR88;
 277        break;
 278     case __DRI_IMAGE_FORMAT_NONE:
 279        image->format = MESA_FORMAT_NONE;
 280        break;
 281     default:
 282        free(image);
 283        return NULL;
 284     }
 285
 286     image->internal_format = _mesa_get_format_base_format(image->format);
 287     image->data = loaderPrivate;
 288
 289     return image;
 290 }
 291
 292 /**
 293  * Sets up a DRIImage structure to point to our shared image in a region
 294  */
 295 static void
 296 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 297                                    struct intel_mipmap_tree *mt, GLuint level,
 298                                    GLuint zoffset)
 299 {
 300    unsigned int draw_x, draw_y;
 301    uint32_t mask_x, mask_y;
 302
 303    intel_miptree_check_level_layer(mt, level, zoffset);
 304
 305    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 306    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 307
 308    image->width = mt->level[level].width;
 309    image->height = mt->level[level].height;
 310    image->tile_x = draw_x & mask_x;
 311    image->tile_y = draw_y & mask_y;
 312
 313    image->offset = intel_region_get_aligned_offset(mt->region,
 314                                                    draw_x & ~mask_x,
 315                                                    draw_y & ~mask_y,
 316                                                    false);
 317
 318    intel_region_reference(&image->region, mt->region);
 319 }
 320
 321 static void
 322 intel_setup_image_from_dimensions(__DRIimage *image)
 323 {
 324    image->width    = image->region->width;
 325    image->height   = image->region->height;
 326    image->tile_x = 0;
 327    image->tile_y = 0;
 328    image->has_depthstencil = false;
 329 }
 330
 331 static inline uint32_t
 332 intel_dri_format(GLuint format)
 333 {
 334    switch (format) {
 335    case MESA_FORMAT_RGB565:
 336       return __DRI_IMAGE_FORMAT_RGB565;
 337    case MESA_FORMAT_XRGB8888:
 338       return __DRI_IMAGE_FORMAT_XRGB8888;
 339    case MESA_FORMAT_ARGB8888:
 340       return __DRI_IMAGE_FORMAT_ARGB8888;
 341    case MESA_FORMAT_RGBA8888_REV:
 342       return __DRI_IMAGE_FORMAT_ABGR8888;
 343    case MESA_FORMAT_R8:
 344       return __DRI_IMAGE_FORMAT_R8;
 345    case MESA_FORMAT_RG88:
 346       return __DRI_IMAGE_FORMAT_GR88;
 347    }
 348
 349    return MESA_FORMAT_NONE;
 350 }
 351
 352 static __DRIimage *
 353 intel_create_image_from_name(__DRIscreen *screen,
 354                              int width, int height, int format,
 355                              int name, int pitch, void *loaderPrivate)
 356 {
 357     struct intel_screen *intelScreen = screen->driverPrivate;
 358     __DRIimage *image;
 359     int cpp;
 360
 361     image = intel_allocate_image(format, loaderPrivate);
 362     if (image == NULL)
 363        return NULL;
 364
 365     if (image->format == MESA_FORMAT_NONE)
 366        cpp = 1;
 367     else
 368        cpp = _mesa_get_format_bytes(image->format);
 369     image->region = intel_region_alloc_for_handle(intelScreen,
 370                                                   cpp, width, height,
 371                                                   pitch * cpp, name, "image");
 372     if (image->region == NULL) {
 373        free(image);
 374        return NULL;
 375     }
 376
 377     intel_setup_image_from_dimensions(image);
 378
 379     return image;
 380 }
 381
 382 static __DRIimage *
 383 intel_create_image_from_renderbuffer(__DRIcontext *context,
 384                                      int renderbuffer, void *loaderPrivate)
 385 {
 386    __DRIimage *image;
 387    struct intel_context *intel = context->driverPrivate;
 388    struct gl_renderbuffer *rb;
 389    struct intel_renderbuffer *irb;
 390
 391    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 392    if (!rb) {
 393       _mesa_error(&intel->ctx,
 394                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 395       return NULL;
 396    }
 397
 398    irb = intel_renderbuffer(rb);
 399    image = calloc(1, sizeof *image);
 400    if (image == NULL)
 401       return NULL;
 402
 403    image->internal_format = rb->InternalFormat;
 404    image->format = rb->Format;
 405    image->offset = 0;
 406    image->data = loaderPrivate;
 407    intel_region_reference(&image->region, irb->mt->region);
 408    intel_setup_image_from_dimensions(image);
 409    image->dri_format = intel_dri_format(image->format);
 410    image->has_depthstencil = irb->mt->stencil_mt? true : false;
 411
 412    rb->NeedsFinishRenderTexture = true;
 413    return image;
 414 }
 415
 416 static __DRIimage *
 417 intel_create_image_from_texture(__DRIcontext *context, int target,
 418                                 unsigned texture, int zoffset,
 419                                 int level,
 420                                 unsigned *error,
 421                                 void *loaderPrivate)
 422 {
 423    __DRIimage *image;
 424    struct intel_context *intel = context->driverPrivate;
 425    struct gl_texture_object *obj;
 426    struct intel_texture_object *iobj;
 427    GLuint face = 0;
 428
 429    obj = _mesa_lookup_texture(&intel->ctx, texture);
 430    if (!obj || obj->Target != target) {
 431       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 432       return NULL;
 433    }
 434
 435    if (target == GL_TEXTURE_CUBE_MAP)
 436       face = zoffset;
 437
 438    _mesa_test_texobj_completeness(&intel->ctx, obj);
 439    iobj = intel_texture_object(obj);
 440    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 441       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 442       return NULL;
 443    }
 444
 445    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 446       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 447       return NULL;
 448    }
 449
 450    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 451       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 452       return NULL;
 453    }
 454    image = calloc(1, sizeof *image);
 455    if (image == NULL) {
 456       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 457       return NULL;
 458    }
 459
 460    image->internal_format = obj->Image[face][level]->InternalFormat;
 461    image->format = obj->Image[face][level]->TexFormat;
 462    image->data = loaderPrivate;
 463    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 464    image->dri_format = intel_dri_format(image->format);
 465    image->has_depthstencil = iobj->mt->stencil_mt? true : false;
 466    if (image->dri_format == MESA_FORMAT_NONE) {
 467       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 468       free(image);
 469       return NULL;
 470    }
 471
 472    *error = __DRI_IMAGE_ERROR_SUCCESS;
 473    return image;
 474 }
 475
 476 static void
 477 intel_destroy_image(__DRIimage *image)
 478 {
 479     intel_region_release(&image->region);
 480     free(image);
 481 }
 482
 483 static __DRIimage *
 484 intel_create_image(__DRIscreen *screen,
 485                    int width, int height, int format,
 486                    unsigned int use,
 487                    void *loaderPrivate)
 488 {
 489    __DRIimage *image;
 490    struct intel_screen *intelScreen = screen->driverPrivate;
 491    uint32_t tiling;
 492    int cpp;
 493
 494    tiling = I915_TILING_X;
 495    if (use & __DRI_IMAGE_USE_CURSOR) {
 496       if (width != 64 || height != 64)
 497          return NULL;
 498       tiling = I915_TILING_NONE;
 499    }
 500
 501    image = intel_allocate_image(format, loaderPrivate);
 502    if (image == NULL)
 503       return NULL;
 504
 505    cpp = _mesa_get_format_bytes(image->format);
 506    image->region =
 507       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 508    if (image->region == NULL) {
 509       free(image);
 510       return NULL;
 511    }
 512
 513    intel_setup_image_from_dimensions(image);
 514
 515    return image;
 516 }
 517
 518 static GLboolean
 519 intel_query_image(__DRIimage *image, int attrib, int *value)
 520 {
 521    switch (attrib) {
 522    case __DRI_IMAGE_ATTRIB_STRIDE:
 523       *value = image->region->pitch;
 524       return true;
 525    case __DRI_IMAGE_ATTRIB_HANDLE:
 526       *value = image->region->bo->handle;
 527       return true;
 528    case __DRI_IMAGE_ATTRIB_NAME:
 529       return intel_region_flink(image->region, (uint32_t *) value);
 530    case __DRI_IMAGE_ATTRIB_FORMAT:
 531       *value = image->dri_format;
 532       return true;
 533    case __DRI_IMAGE_ATTRIB_WIDTH:
 534       *value = image->region->width;
 535       return true;
 536    case __DRI_IMAGE_ATTRIB_HEIGHT:
 537       *value = image->region->height;
 538       return true;
 539    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 540       if (image->planar_format == NULL)
 541          return false;
 542       *value = image->planar_format->components;
 543       return true;
 544    case __DRI_IMAGE_ATTRIB_FD:
 545       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 546          return true;
 547       return false;
 548   default:
 549       return false;
 550    }
 551 }
 552
 553 static __DRIimage *
 554 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 555 {
 556    __DRIimage *image;
 557
 558    image = calloc(1, sizeof *image);
 559    if (image == NULL)
 560       return NULL;
 561
 562    intel_region_reference(&image->region, orig_image->region);
 563    if (image->region == NULL) {
 564       free(image);
 565       return NULL;
 566    }
 567
 568    image->internal_format = orig_image->internal_format;
 569    image->planar_format   = orig_image->planar_format;
 570    image->dri_format      = orig_image->dri_format;
 571    image->format          = orig_image->format;
 572    image->offset          = orig_image->offset;
 573    image->width           = orig_image->width;
 574    image->height          = orig_image->height;
 575    image->tile_x          = orig_image->tile_x;
 576    image->tile_y          = orig_image->tile_y;
 577    image->has_depthstencil = orig_image->has_depthstencil;
 578    image->data            = loaderPrivate;
 579
 580    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 581    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 582
 583    return image;
 584 }
 585
 586 static GLboolean
 587 intel_validate_usage(__DRIimage *image, unsigned int use)
 588 {
 589    if (use & __DRI_IMAGE_USE_CURSOR) {
 590       if (image->region->width != 64 || image->region->height != 64)
 591          return GL_FALSE;
 592    }
 593
 594    return GL_TRUE;
 595 }
 596
 597 static __DRIimage *
 598 intel_create_image_from_names(__DRIscreen *screen,
 599                               int width, int height, int fourcc,
 600                               int *names, int num_names,
 601                               int *strides, int *offsets,
 602                               void *loaderPrivate)
 603 {
 604     struct intel_image_format *f = NULL;
 605     __DRIimage *image;
 606     int i, index;
 607
 608     if (screen == NULL || names == NULL || num_names != 1)
 609         return NULL;
 610
 611     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 612         if (intel_image_formats[i].fourcc == fourcc) {
 613            f = &intel_image_formats[i];
 614         }
 615     }
 616
 617     if (f == NULL)
 618         return NULL;
 619
 620     image = intel_create_image_from_name(screen, width, height,
 621                                          __DRI_IMAGE_FORMAT_NONE,
 622                                          names[0], strides[0],
 623                                          loaderPrivate);
 624
 625    if (image == NULL)
 626       return NULL;
 627
 628     image->planar_format = f;
 629     for (i = 0; i < f->nplanes; i++) {
 630         index = f->planes[i].buffer_index;
 631         image->offsets[index] = offsets[index];
 632         image->strides[index] = strides[index];
 633     }
 634
 635     return image;
 636 }
 637
 638 static __DRIimage *
 639 intel_create_image_from_fds(__DRIscreen *screen,
 640                             int width, int height, int fourcc,
 641                             int *fds, int num_fds, int *strides, int *offsets,
 642                             void *loaderPrivate)
 643 {
 644    struct intel_screen *intelScreen = screen->driverPrivate;
 645    struct intel_image_format *f = NULL;
 646    __DRIimage *image;
 647    int i, index;
 648
 649    if (fds == NULL || num_fds != 1)
 650       return NULL;
 651
 652    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 653       if (intel_image_formats[i].fourcc == fourcc) {
 654          f = &intel_image_formats[i];
 655       }
 656    }
 657
 658    if (f == NULL)
 659       return NULL;
 660
 661    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 662    if (image == NULL)
 663       return NULL;
 664
 665    image->region = intel_region_alloc_for_fd(intelScreen,
 666                                              1, width, height,
 667                                              strides[0], fds[0], "image");
 668    if (image->region == NULL) {
 669       free(image);
 670       return NULL;
 671    }
 672
 673    image->planar_format = f;
 674    for (i = 0; i < f->nplanes; i++) {
 675       index = f->planes[i].buffer_index;
 676       image->offsets[index] = offsets[index];
 677       image->strides[index] = strides[index];
 678    }
 679
 680    return image;
 681 }
 682
 683
 684 static __DRIimage *
 685 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 686 {
 687     int width, height, offset, stride, dri_format, index;
 688     struct intel_image_format *f;
 689     uint32_t mask_x, mask_y;
 690     __DRIimage *image;
 691
 692     if (parent == NULL || parent->planar_format == NULL)
 693         return NULL;
 694
 695     f = parent->planar_format;
 696
 697     if (plane >= f->nplanes)
 698         return NULL;
 699
 700     width = parent->region->width >> f->planes[plane].width_shift;
 701     height = parent->region->height >> f->planes[plane].height_shift;
 702     dri_format = f->planes[plane].dri_format;
 703     index = f->planes[plane].buffer_index;
 704     offset = parent->offsets[index];
 705     stride = parent->strides[index];
 706
 707     image = intel_allocate_image(dri_format, loaderPrivate);
 708     if (image == NULL)
 709        return NULL;
 710
 711     if (offset + height * stride > parent->region->bo->size) {
 712        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 713        free(image);
 714        return NULL;
 715     }
 716
 717     image->region = calloc(sizeof(*image->region), 1);
 718     if (image->region == NULL) {
 719        free(image);
 720        return NULL;
 721     }
 722
 723     image->region->cpp = _mesa_get_format_bytes(image->format);
 724     image->region->width = width;
 725     image->region->height = height;
 726     image->region->pitch = stride;
 727     image->region->refcount = 1;
 728     image->region->bo = parent->region->bo;
 729     drm_intel_bo_reference(image->region->bo);
 730     image->region->tiling = parent->region->tiling;
 731     image->offset = offset;
 732     intel_setup_image_from_dimensions(image);
 733
 734     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 735     if (offset & mask_x)
 736        _mesa_warning(NULL,
 737                      "intel_create_sub_image: offset not on tile boundary");
 738
 739     return image;
 740 }
 741
 742 static struct __DRIimageExtensionRec intelImageExtension = {
 743     .base = { __DRI_IMAGE, 7 },
 744
 745     .createImageFromName                = intel_create_image_from_name,
 746     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 747     .destroyImage                       = intel_destroy_image,
 748     .createImage                        = intel_create_image,
 749     .queryImage                         = intel_query_image,
 750     .dupImage                           = intel_dup_image,
 751     .validateUsage                      = intel_validate_usage,
 752     .createImageFromNames               = intel_create_image_from_names,
 753     .fromPlanar                         = intel_from_planar,
 754     .createImageFromTexture             = intel_create_image_from_texture,
 755     .createImageFromFds                 = intel_create_image_from_fds
 756 };
 757
 758 static const __DRIextension *intelScreenExtensions[] = {
 759     &intelTexBufferExtension.base,
 760     &intelFlushExtension.base,
 761     &intelImageExtension.base,
 762     &dri2ConfigQueryExtension.base,
 763     NULL
 764 };
 765
 766 static bool
 767 intel_get_param(__DRIscreen *psp, int param, int *value)
 768 {
 769    int ret;
 770    struct drm_i915_getparam gp;
 771
 772    memset(&gp, 0, sizeof(gp));
 773    gp.param = param;
 774    gp.value = value;
 775
 776    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 777    if (ret) {
 778       if (ret != -EINVAL)
 779          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 780       return false;
 781    }
 782
 783    return true;
 784 }
 785
 786 static bool
 787 intel_get_boolean(__DRIscreen *psp, int param)
 788 {
 789    int value = 0;
 790    return intel_get_param(psp, param, &value) && value;
 791 }
 792
 793 static void
 794 intelDestroyScreen(__DRIscreen * sPriv)
 795 {
 796    struct intel_screen *intelScreen = sPriv->driverPrivate;
 797
 798    dri_bufmgr_destroy(intelScreen->bufmgr);
 799    driDestroyOptionInfo(&intelScreen->optionCache);
 800
 801    free(intelScreen);
 802    sPriv->driverPrivate = NULL;
 803 }
 804
 805
 806 /**
 807  * This is called when we need to set up GL rendering to a new X window.
 808  */
 809 static GLboolean
 810 intelCreateBuffer(__DRIscreen * driScrnPriv,
 811                   __DRIdrawable * driDrawPriv,
 812                   const struct gl_config * mesaVis, GLboolean isPixmap)
 813 {
 814    struct intel_renderbuffer *rb;
 815    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 816    gl_format rgbFormat;
 817    unsigned num_samples = intel_quantize_num_samples(screen, mesaVis->samples);
 818    struct gl_framebuffer *fb;
 819
 820    if (isPixmap)
 821       return false;
 822
 823    fb = CALLOC_STRUCT(gl_framebuffer);
 824    if (!fb)
 825       return false;
 826
 827    _mesa_initialize_window_framebuffer(fb, mesaVis);
 828
 829    if (mesaVis->redBits == 5)
 830       rgbFormat = MESA_FORMAT_RGB565;
 831    else if (mesaVis->sRGBCapable)
 832       rgbFormat = MESA_FORMAT_SARGB8;
 833    else if (mesaVis->alphaBits == 0)
 834       rgbFormat = MESA_FORMAT_XRGB8888;
 835    else {
 836       if (screen->gen >= 4) {
 837          rgbFormat = MESA_FORMAT_SARGB8;
 838          fb->Visual.sRGBCapable = true;
 839       } else {
 840          rgbFormat = MESA_FORMAT_ARGB8888;
 841       }
 842
 843    }
 844
 845    /* setup the hardware-based renderbuffers */
 846    rb = intel_create_renderbuffer(rgbFormat, num_samples);
 847    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 848
 849    if (mesaVis->doubleBufferMode) {
 850       rb = intel_create_renderbuffer(rgbFormat, num_samples);
 851       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 852    }
 853
 854    /*
 855     * Assert here that the gl_config has an expected depth/stencil bit
 856     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 857     * which constructs the advertised configs.)
 858     */
 859    if (mesaVis->depthBits == 24) {
 860       assert(mesaVis->stencilBits == 8);
 861
 862       if (screen->hw_has_separate_stencil) {
 863          rb = intel_create_private_renderbuffer(MESA_FORMAT_X8_Z24,
 864                                                 num_samples);
 865          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 866          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8,
 867                                                 num_samples);
 868          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 869       } else {
 870          /*
 871           * Use combined depth/stencil. Note that the renderbuffer is
 872           * attached to two attachment points.
 873           */
 874          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24,
 875                                                 num_samples);
 876          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 877          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 878       }
 879    }
 880    else if (mesaVis->depthBits == 16) {
 881       assert(mesaVis->stencilBits == 0);
 882       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16,
 883                                              num_samples);
 884       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 885    }
 886    else {
 887       assert(mesaVis->depthBits == 0);
 888       assert(mesaVis->stencilBits == 0);
 889    }
 890
 891    /* now add any/all software-based renderbuffers we may need */
 892    _swrast_add_soft_renderbuffers(fb,
 893                                   false, /* never sw color */
 894                                   false, /* never sw depth */
 895                                   false, /* never sw stencil */
 896                                   mesaVis->accumRedBits > 0,
 897                                   false, /* never sw alpha */
 898                                   false  /* never sw aux */ );
 899    driDrawPriv->driverPrivate = fb;
 900
 901    return true;
 902 }
 903
 904 static void
 905 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 906 {
 907     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 908
 909     _mesa_reference_framebuffer(&fb, NULL);
 910 }
 911
 912 /* There are probably better ways to do this, such as an
 913  * init-designated function to register chipids and createcontext
 914  * functions.
 915  */
 916 extern bool
 917 i830CreateContext(int api,
 918                   const struct gl_config *mesaVis,
 919                   __DRIcontext *driContextPriv,
 920                   unsigned major_version,
 921                   unsigned minor_version,
 922                   unsigned *error,
 923                   void *sharedContextPrivate);
 924
 925 extern bool
 926 i915CreateContext(int api,
 927                   const struct gl_config *mesaVis,
 928                   __DRIcontext *driContextPriv,
 929                   unsigned major_version,
 930                   unsigned minor_version,
 931                   unsigned *error,
 932                   void *sharedContextPrivate);
 933 extern bool
 934 brwCreateContext(int api,
 935                  const struct gl_config *mesaVis,
 936                  __DRIcontext *driContextPriv,
 937                  unsigned major_version,
 938                  unsigned minor_version,
 939                  uint32_t flags,
 940                  unsigned *error,
 941                  void *sharedContextPrivate);
 942
 943 static GLboolean
 944 intelCreateContext(gl_api api,
 945                    const struct gl_config * mesaVis,
 946                    __DRIcontext * driContextPriv,
 947                    unsigned major_version,
 948                    unsigned minor_version,
 949                    uint32_t flags,
 950                    unsigned *error,
 951                    void *sharedContextPrivate)
 952 {
 953    bool success = false;
 954
 955 #ifdef I915
 956    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 957    struct intel_screen *intelScreen = sPriv->driverPrivate;
 958
 959    if (IS_9XX(intelScreen->deviceID)) {
 960       success = i915CreateContext(api, mesaVis, driContextPriv,
 961                                   major_version, minor_version, error,
 962                                   sharedContextPrivate);
 963    } else {
 964       intelScreen->no_vbo = true;
 965       success = i830CreateContext(api, mesaVis, driContextPriv,
 966                                   major_version, minor_version, error,
 967                                   sharedContextPrivate);
 968    }
 969 #else
 970    success = brwCreateContext(api, mesaVis,
 971                               driContextPriv,
 972                               major_version, minor_version, flags,
 973                               error, sharedContextPrivate);
 974 #endif
 975
 976    if (success)
 977       return true;
 978
 979    if (driContextPriv->driverPrivate != NULL)
 980       intelDestroyContext(driContextPriv);
 981
 982    return false;
 983 }
 984
 985 static bool
 986 intel_init_bufmgr(struct intel_screen *intelScreen)
 987 {
 988    __DRIscreen *spriv = intelScreen->driScrnPriv;
 989
 990    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 991
 992    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 993    if (intelScreen->bufmgr == NULL) {
 994       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 995               __func__, __LINE__);
 996       return false;
 997    }
 998
 999    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
1000
1001    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
1002       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
1003       return false;
1004    }
1005
1006    return true;
1007 }
1008
1009 /**
1010  * Override intel_screen.hw_has_separate_stencil with environment variable
1011  * INTEL_SEPARATE_STENCIL.
1012  *
1013  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
1014  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
1015  * is ignored.
1016  */
1017 static void
1018 intel_override_separate_stencil(struct intel_screen *screen)
1019 {
1020    const char *s = getenv("INTEL_SEPARATE_STENCIL");
1021    if (!s) {
1022       return;
1023    } else if (!strncmp("0", s, 2)) {
1024       screen->hw_has_separate_stencil = false;
1025    } else if (!strncmp("1", s, 2)) {
1026       screen->hw_has_separate_stencil = true;
1027    } else {
1028       fprintf(stderr,
1029               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
1030               "invalid value and is ignored", s);
1031    }
1032 }
1033
1034 static bool
1035 intel_detect_swizzling(struct intel_screen *screen)
1036 {
1037    drm_intel_bo *buffer;
1038    unsigned long flags = 0;
1039    unsigned long aligned_pitch;
1040    uint32_t tiling = I915_TILING_X;
1041    uint32_t swizzle_mode = 0;
1042
1043    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
1044                                      64, 64, 4,
1045                                      &tiling, &aligned_pitch, flags);
1046    if (buffer == NULL)
1047       return false;
1048
1049    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
1050    drm_intel_bo_unreference(buffer);
1051
1052    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
1053       return false;
1054    else
1055       return true;
1056 }
1057
1058 static __DRIconfig**
1059 intel_screen_make_configs(__DRIscreen *dri_screen)
1060 {
1061    static const gl_format formats[] = {
1062       MESA_FORMAT_RGB565,
1063       MESA_FORMAT_ARGB8888
1064    };
1065
1066    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1067    static const GLenum back_buffer_modes[] = {
1068        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1069    };
1070
1071    static const uint8_t singlesample_samples[1] = {0};
1072    static const uint8_t multisample_samples[2]  = {4, 8};
1073
1074    struct intel_screen *screen = dri_screen->driverPrivate;
1075    uint8_t depth_bits[4], stencil_bits[4];
1076    __DRIconfig **configs = NULL;
1077
1078    /* Generate singlesample configs without accumulation buffer. */
1079    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1080       __DRIconfig **new_configs;
1081       int num_depth_stencil_bits = 2;
1082
1083       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1084        * buffer that has a different number of bits per pixel than the color
1085        * buffer, gen >= 6 supports this.
1086        */
1087       depth_bits[0] = 0;
1088       stencil_bits[0] = 0;
1089
1090       if (formats[i] == MESA_FORMAT_RGB565) {
1091          depth_bits[1] = 16;
1092          stencil_bits[1] = 0;
1093          if (screen->gen >= 6) {
1094              depth_bits[2] = 24;
1095              stencil_bits[2] = 8;
1096              num_depth_stencil_bits = 3;
1097          }
1098       } else {
1099          depth_bits[1] = 24;
1100          stencil_bits[1] = 8;
1101       }
1102
1103       new_configs = driCreateConfigs(formats[i],
1104                                      depth_bits,
1105                                      stencil_bits,
1106                                      num_depth_stencil_bits,
1107                                      back_buffer_modes, 2,
1108                                      singlesample_samples, 1,
1109                                      false);
1110       configs = driConcatConfigs(configs, new_configs);
1111    }
1112
1113    /* Generate the minimum possible set of configs that include an
1114     * accumulation buffer.
1115     */
1116    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1117       __DRIconfig **new_configs;
1118
1119       if (formats[i] == MESA_FORMAT_RGB565) {
1120          depth_bits[0] = 16;
1121          stencil_bits[0] = 0;
1122       } else {
1123          depth_bits[0] = 24;
1124          stencil_bits[0] = 8;
1125       }
1126
1127       new_configs = driCreateConfigs(formats[i],
1128                                      depth_bits, stencil_bits, 1,
1129                                      back_buffer_modes, 1,
1130                                      singlesample_samples, 1,
1131                                      true);
1132       configs = driConcatConfigs(configs, new_configs);
1133    }
1134
1135    /* Generate multisample configs.
1136     *
1137     * This loop breaks early, and hence is a no-op, on gen < 6.
1138     *
1139     * Multisample configs must follow the singlesample configs in order to
1140     * work around an X server bug present in 1.12. The X server chooses to
1141     * associate the first listed RGBA888-Z24S8 config, regardless of its
1142     * sample count, with the 32-bit depth visual used for compositing.
1143     *
1144     * Only doublebuffer configs with GLX_SWAP_UNDEFINED_OML behavior are
1145     * supported.  Singlebuffer configs are not supported because no one wants
1146     * them.
1147     */
1148    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1149       if (screen->gen < 6)
1150          break;
1151
1152       __DRIconfig **new_configs;
1153       const int num_depth_stencil_bits = 2;
1154       int num_msaa_modes = 0;
1155
1156       depth_bits[0] = 0;
1157       stencil_bits[0] = 0;
1158
1159       if (formats[i] == MESA_FORMAT_RGB565) {
1160          depth_bits[1] = 16;
1161          stencil_bits[1] = 0;
1162       } else {
1163          depth_bits[1] = 24;
1164          stencil_bits[1] = 8;
1165       }
1166
1167       if (screen->gen >= 7)
1168          num_msaa_modes = 2;
1169       else if (screen->gen == 6)
1170          num_msaa_modes = 1;
1171
1172       new_configs = driCreateConfigs(formats[i],
1173                                      depth_bits,
1174                                      stencil_bits,
1175                                      num_depth_stencil_bits,
1176                                      back_buffer_modes, 1,
1177                                      multisample_samples,
1178                                      num_msaa_modes,
1179                                      false);
1180       configs = driConcatConfigs(configs, new_configs);
1181    }
1182
1183    if (configs == NULL) {
1184       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1185               __LINE__);
1186       return NULL;
1187    }
1188
1189    return configs;
1190 }
1191
1192 static void
1193 set_max_gl_versions(struct intel_screen *screen)
1194 {
1195    int gl_version_override = _mesa_get_gl_version_override();
1196
1197    switch (screen->gen) {
1198    case 7:
1199       if (screen->kernel_has_gen7_sol_reset) {
1200          screen->max_gl_core_version = 31;
1201          screen->max_gl_compat_version = 30;
1202          screen->max_gl_es1_version = 11;
1203          screen->max_gl_es2_version = 30;
1204       } else {
1205          screen->max_gl_core_version = 0;
1206          screen->max_gl_compat_version = 21;
1207          screen->max_gl_es1_version = 11;
1208          screen->max_gl_es2_version = 20;
1209       }
1210       break;
1211    case 6:
1212       screen->max_gl_core_version = 31;
1213       screen->max_gl_compat_version = 30;
1214       screen->max_gl_es1_version = 11;
1215       screen->max_gl_es2_version = 30;
1216       break;
1217    case 5:
1218    case 4:
1219       screen->max_gl_core_version = 0;
1220       screen->max_gl_compat_version = 21;
1221       screen->max_gl_es1_version = 11;
1222       screen->max_gl_es2_version = 20;
1223       break;
1224    case 3: {
1225       screen->max_gl_core_version = 0;
1226       screen->max_gl_es1_version = 11;
1227       screen->max_gl_compat_version = 21;
1228       screen->max_gl_es2_version = 20;
1229
1230       break;
1231    }
1232    case 2:
1233       screen->max_gl_core_version = 0;
1234       screen->max_gl_compat_version = 13;
1235       screen->max_gl_es1_version = 11;
1236       screen->max_gl_es2_version = 0;
1237       break;
1238    default:
1239       assert(!"unrecognized intel_screen::gen");
1240       break;
1241    }
1242
1243    if (gl_version_override >= 31) {
1244       screen->max_gl_core_version = MAX2(screen->max_gl_core_version,
1245                                          gl_version_override);
1246    } else {
1247       screen->max_gl_compat_version = MAX2(screen->max_gl_compat_version,
1248                                            gl_version_override);
1249    }
1250
1251 #ifndef FEATURE_ES1
1252    screen->max_gl_es1_version = 0;
1253 #endif
1254
1255 #ifndef FEATURE_ES2
1256    screen->max_gl_es2_version = 0;
1257 #endif
1258 }
1259
1260 /**
1261  * This is the driver specific part of the createNewScreen entry point.
1262  * Called when using DRI2.
1263  *
1264  * \return the struct gl_config supported by this driver
1265  */
1266 static const
1267 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1268 {
1269    struct intel_screen *intelScreen;
1270
1271    if (psp->dri2.loader->base.version <= 2 ||
1272        psp->dri2.loader->getBuffersWithFormat == NULL) {
1273       fprintf(stderr,
1274               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1275               "support required\n");
1276       return false;
1277    }
1278
1279    /* Allocate the private area */
1280    intelScreen = calloc(1, sizeof *intelScreen);
1281    if (!intelScreen) {
1282       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1283       return false;
1284    }
1285    /* parse information in __driConfigOptions */
1286    driParseOptionInfo(&intelScreen->optionCache,
1287                       __driConfigOptions, __driNConfigOptions);
1288
1289    intelScreen->driScrnPriv = psp;
1290    psp->driverPrivate = (void *) intelScreen;
1291
1292    if (!intel_init_bufmgr(intelScreen))
1293        return false;
1294
1295    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1296
1297    intelScreen->kernel_has_gen7_sol_reset =
1298       intel_get_boolean(intelScreen->driScrnPriv,
1299                         I915_PARAM_HAS_GEN7_SOL_RESET);
1300
1301    if (IS_GEN7(intelScreen->deviceID)) {
1302       intelScreen->gen = 7;
1303    } else if (IS_GEN6(intelScreen->deviceID)) {
1304       intelScreen->gen = 6;
1305    } else if (IS_GEN5(intelScreen->deviceID)) {
1306       intelScreen->gen = 5;
1307    } else if (IS_965(intelScreen->deviceID)) {
1308       intelScreen->gen = 4;
1309    } else if (IS_9XX(intelScreen->deviceID)) {
1310       intelScreen->gen = 3;
1311    } else {
1312       intelScreen->gen = 2;
1313    }
1314
1315    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
1316    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
1317
1318    int has_llc = 0;
1319    bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
1320                                   &has_llc);
1321    if (success && has_llc)
1322       intelScreen->hw_has_llc = true;
1323    else if (!success && intelScreen->gen >= 6)
1324       intelScreen->hw_has_llc = true;
1325
1326    intel_override_separate_stencil(intelScreen);
1327
1328    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1329
1330    set_max_gl_versions(intelScreen);
1331
1332    psp->api_mask = (1 << __DRI_API_OPENGL);
1333    if (intelScreen->max_gl_core_version > 0)
1334       psp->api_mask |= (1 << __DRI_API_OPENGL_CORE);
1335    if (intelScreen->max_gl_es1_version > 0)
1336       psp->api_mask |= (1 << __DRI_API_GLES);
1337    if (intelScreen->max_gl_es2_version > 0)
1338       psp->api_mask |= (1 << __DRI_API_GLES2);
1339    if (intelScreen->max_gl_es2_version >= 30)
1340       psp->api_mask |= (1 << __DRI_API_GLES3);
1341
1342    psp->extensions = intelScreenExtensions;
1343
1344    return (const __DRIconfig**) intel_screen_make_configs(psp);
1345 }
1346
1347 struct intel_buffer {
1348    __DRIbuffer base;
1349    struct intel_region *region;
1350 };
1351
1352 static __DRIbuffer *
1353 intelAllocateBuffer(__DRIscreen *screen,
1354                     unsigned attachment, unsigned format,
1355                     int width, int height)
1356 {
1357    struct intel_buffer *intelBuffer;
1358    struct intel_screen *intelScreen = screen->driverPrivate;
1359
1360    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1361           attachment == __DRI_BUFFER_BACK_LEFT);
1362
1363    intelBuffer = calloc(1, sizeof *intelBuffer);
1364    if (intelBuffer == NULL)
1365       return NULL;
1366
1367    /* The front and back buffers are color buffers, which are X tiled. */
1368    intelBuffer->region = intel_region_alloc(intelScreen,
1369                                             I915_TILING_X,
1370                                             format / 8,
1371                                             width,
1372                                             height,
1373                                             true);
1374
1375    if (intelBuffer->region == NULL) {
1376            free(intelBuffer);
1377            return NULL;
1378    }
1379
1380    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1381
1382    intelBuffer->base.attachment = attachment;
1383    intelBuffer->base.cpp = intelBuffer->region->cpp;
1384    intelBuffer->base.pitch = intelBuffer->region->pitch;
1385
1386    return &intelBuffer->base;
1387 }
1388
1389 static void
1390 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1391 {
1392    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1393
1394    intel_region_release(&intelBuffer->region);
1395    free(intelBuffer);
1396 }
1397
1398
1399 const struct __DriverAPIRec driDriverAPI = {
1400    .InitScreen           = intelInitScreen2,
1401    .DestroyScreen        = intelDestroyScreen,
1402    .CreateContext        = intelCreateContext,
1403    .DestroyContext       = intelDestroyContext,
1404    .CreateBuffer         = intelCreateBuffer,
1405    .DestroyBuffer        = intelDestroyBuffer,
1406    .MakeCurrent          = intelMakeCurrent,
1407    .UnbindContext        = intelUnbindContext,
1408    .AllocateBuffer       = intelAllocateBuffer,
1409    .ReleaseBuffer        = intelReleaseBuffer
1410 };
1411
1412 /* This is the table of extensions that the loader will dlsym() for. */
1413 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1414     &driCoreExtension.base,
1415     &driDRI2Extension.base,
1416     NULL
1417 };