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(hiz, bool, true)
  59          DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
  60       DRI_CONF_OPT_END
  61
  62       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  63          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  64       DRI_CONF_OPT_END
  65
  66       DRI_CONF_OPT_BEGIN(fragment_shader, bool, true)
  67          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  68       DRI_CONF_OPT_END
  69
  70    DRI_CONF_SECTION_END
  71    DRI_CONF_SECTION_QUALITY
  72       DRI_CONF_FORCE_S3TC_ENABLE(false)
  73       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  74    DRI_CONF_SECTION_END
  75    DRI_CONF_SECTION_DEBUG
  76      DRI_CONF_NO_RAST(false)
  77      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  78      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  79      DRI_CONF_DISABLE_THROTTLING(false)
  80      DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN(false)
  81      DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS(false)
  82      DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED(false)
  83
  84       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  85          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  86       DRI_CONF_OPT_END
  87
  88       DRI_CONF_OPT_BEGIN(shader_precompile, bool, true)
  89          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  90       DRI_CONF_OPT_END
  91    DRI_CONF_SECTION_END
  92 DRI_CONF_END;
  93
  94 const GLuint __driNConfigOptions = 16;
  95
  96 #include "intel_batchbuffer.h"
  97 #include "intel_buffers.h"
  98 #include "intel_bufmgr.h"
  99 #include "intel_chipset.h"
 100 #include "intel_fbo.h"
 101 #include "intel_mipmap_tree.h"
 102 #include "intel_screen.h"
 103 #include "intel_tex.h"
 104 #include "intel_regions.h"
 105
 106 #ifndef I915
 107 #include "brw_context.h"
 108 #endif
 109
 110 #include "i915_drm.h"
 111
 112 #ifdef USE_NEW_INTERFACE
 113 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 114 #endif /*USE_NEW_INTERFACE */
 115
 116 /**
 117  * For debugging purposes, this returns a time in seconds.
 118  */
 119 double
 120 get_time(void)
 121 {
 122    struct timespec tp;
 123
 124    clock_gettime(CLOCK_MONOTONIC, &tp);
 125
 126    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 127 }
 128
 129 void
 130 aub_dump_bmp(struct gl_context *ctx)
 131 {
 132    struct gl_framebuffer *fb = ctx->DrawBuffer;
 133
 134    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 135       struct intel_renderbuffer *irb =
 136          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 137
 138       if (irb && irb->mt) {
 139          enum aub_dump_bmp_format format;
 140
 141          switch (irb->Base.Base.Format) {
 142          case MESA_FORMAT_ARGB8888:
 143          case MESA_FORMAT_XRGB8888:
 144             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 145             break;
 146          default:
 147             continue;
 148          }
 149
 150          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 151          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 152                                        irb->draw_x,
 153                                        irb->draw_y,
 154                                        irb->Base.Base.Width,
 155                                        irb->Base.Base.Height,
 156                                        format,
 157                                        irb->mt->region->pitch,
 158                                        0);
 159       }
 160    }
 161 }
 162
 163 static const __DRItexBufferExtension intelTexBufferExtension = {
 164    .base = { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 165
 166    .setTexBuffer        = intelSetTexBuffer,
 167    .setTexBuffer2       = intelSetTexBuffer2,
 168    .releaseTexBuffer    = NULL,
 169 };
 170
 171 static void
 172 intelDRI2Flush(__DRIdrawable *drawable)
 173 {
 174    GET_CURRENT_CONTEXT(ctx);
 175    struct intel_context *intel = intel_context(ctx);
 176    if (intel == NULL)
 177       return;
 178
 179    if (intel->gen < 4)
 180       INTEL_FIREVERTICES(intel);
 181
 182    intel_downsample_for_dri2_flush(intel, drawable);
 183    intel->need_throttle = true;
 184
 185    if (intel->batch.used)
 186       intel_batchbuffer_flush(intel);
 187
 188    if (INTEL_DEBUG & DEBUG_AUB) {
 189       aub_dump_bmp(ctx);
 190    }
 191 }
 192
 193 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 194     .base = { __DRI2_FLUSH, 3 },
 195
 196     .flush              = intelDRI2Flush,
 197     .invalidate         = dri2InvalidateDrawable,
 198 };
 199
 200 static struct intel_image_format intel_image_formats[] = {
 201    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 202      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 203
 204    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 205      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 206
 207    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 208      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 209        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 210        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 211
 212    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 213      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 214        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 215        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 216
 217    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 218      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 219        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 220        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 221
 222    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 223      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 224        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 225        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 226
 227    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 228      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 229        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 230        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 231
 232    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 233      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 234        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 235
 236    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 237      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 238        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 239
 240    /* For YUYV buffers, we set up two overlapping DRI images and treat
 241     * them as planar buffers in the compositors.  Plane 0 is GR88 and
 242     * samples YU or YV pairs and places Y into the R component, while
 243     * plane 1 is ARGB and samples YUYV clusters and places pairs and
 244     * places U into the G component and V into A.  This lets the
 245     * texture sampler interpolate the Y components correctly when
 246     * sampling from plane 0, and interpolate U and V correctly when
 247     * sampling from plane 1. */
 248    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 249      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 250        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
 251 };
 252
 253 static __DRIimage *
 254 intel_allocate_image(int dri_format, void *loaderPrivate)
 255 {
 256     __DRIimage *image;
 257
 258     image = calloc(1, sizeof *image);
 259     if (image == NULL)
 260         return NULL;
 261
 262     image->dri_format = dri_format;
 263     image->offset = 0;
 264
 265     switch (dri_format) {
 266     case __DRI_IMAGE_FORMAT_RGB565:
 267        image->format = MESA_FORMAT_RGB565;
 268        break;
 269     case __DRI_IMAGE_FORMAT_XRGB8888:
 270        image->format = MESA_FORMAT_XRGB8888;
 271        break;
 272     case __DRI_IMAGE_FORMAT_ARGB8888:
 273        image->format = MESA_FORMAT_ARGB8888;
 274        break;
 275     case __DRI_IMAGE_FORMAT_ABGR8888:
 276        image->format = MESA_FORMAT_RGBA8888_REV;
 277        break;
 278     case __DRI_IMAGE_FORMAT_XBGR8888:
 279        image->format = MESA_FORMAT_RGBX8888_REV;
 280        break;
 281     case __DRI_IMAGE_FORMAT_R8:
 282        image->format = MESA_FORMAT_R8;
 283        break;
 284     case __DRI_IMAGE_FORMAT_GR88:
 285        image->format = MESA_FORMAT_GR88;
 286        break;
 287     case __DRI_IMAGE_FORMAT_NONE:
 288        image->format = MESA_FORMAT_NONE;
 289        break;
 290     default:
 291        free(image);
 292        return NULL;
 293     }
 294
 295     image->internal_format = _mesa_get_format_base_format(image->format);
 296     image->data = loaderPrivate;
 297
 298     return image;
 299 }
 300
 301 /**
 302  * Sets up a DRIImage structure to point to our shared image in a region
 303  */
 304 static void
 305 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 306                                    struct intel_mipmap_tree *mt, GLuint level,
 307                                    GLuint zoffset)
 308 {
 309    unsigned int draw_x, draw_y;
 310    uint32_t mask_x, mask_y;
 311
 312    intel_miptree_check_level_layer(mt, level, zoffset);
 313
 314    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 315    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 316
 317    image->width = mt->level[level].width;
 318    image->height = mt->level[level].height;
 319    image->tile_x = draw_x & mask_x;
 320    image->tile_y = draw_y & mask_y;
 321
 322    image->offset = intel_region_get_aligned_offset(mt->region,
 323                                                    draw_x & ~mask_x,
 324                                                    draw_y & ~mask_y,
 325                                                    false);
 326
 327    intel_region_reference(&image->region, mt->region);
 328 }
 329
 330 static void
 331 intel_setup_image_from_dimensions(__DRIimage *image)
 332 {
 333    image->width    = image->region->width;
 334    image->height   = image->region->height;
 335    image->tile_x = 0;
 336    image->tile_y = 0;
 337    image->has_depthstencil = false;
 338 }
 339
 340 static inline uint32_t
 341 intel_dri_format(GLuint format)
 342 {
 343    switch (format) {
 344    case MESA_FORMAT_RGB565:
 345       return __DRI_IMAGE_FORMAT_RGB565;
 346    case MESA_FORMAT_XRGB8888:
 347       return __DRI_IMAGE_FORMAT_XRGB8888;
 348    case MESA_FORMAT_ARGB8888:
 349       return __DRI_IMAGE_FORMAT_ARGB8888;
 350    case MESA_FORMAT_RGBA8888_REV:
 351       return __DRI_IMAGE_FORMAT_ABGR8888;
 352    case MESA_FORMAT_R8:
 353       return __DRI_IMAGE_FORMAT_R8;
 354    case MESA_FORMAT_RG88:
 355       return __DRI_IMAGE_FORMAT_GR88;
 356    }
 357
 358    return MESA_FORMAT_NONE;
 359 }
 360
 361 static __DRIimage *
 362 intel_create_image_from_name(__DRIscreen *screen,
 363                              int width, int height, int format,
 364                              int name, int pitch, void *loaderPrivate)
 365 {
 366     struct intel_screen *intelScreen = screen->driverPrivate;
 367     __DRIimage *image;
 368     int cpp;
 369
 370     image = intel_allocate_image(format, loaderPrivate);
 371     if (image->format == MESA_FORMAT_NONE)
 372        cpp = 1;
 373     else
 374        cpp = _mesa_get_format_bytes(image->format);
 375     image->region = intel_region_alloc_for_handle(intelScreen,
 376                                                   cpp, width, height,
 377                                                   pitch * cpp, name, "image");
 378     if (image->region == NULL) {
 379        free(image);
 380        return NULL;
 381     }
 382
 383     intel_setup_image_from_dimensions(image);
 384
 385     return image;
 386 }
 387
 388 static __DRIimage *
 389 intel_create_image_from_renderbuffer(__DRIcontext *context,
 390                                      int renderbuffer, void *loaderPrivate)
 391 {
 392    __DRIimage *image;
 393    struct intel_context *intel = context->driverPrivate;
 394    struct gl_renderbuffer *rb;
 395    struct intel_renderbuffer *irb;
 396
 397    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 398    if (!rb) {
 399       _mesa_error(&intel->ctx,
 400                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 401       return NULL;
 402    }
 403
 404    irb = intel_renderbuffer(rb);
 405    image = calloc(1, sizeof *image);
 406    if (image == NULL)
 407       return NULL;
 408
 409    image->internal_format = rb->InternalFormat;
 410    image->format = rb->Format;
 411    image->offset = 0;
 412    image->data = loaderPrivate;
 413    intel_region_reference(&image->region, irb->mt->region);
 414    intel_setup_image_from_dimensions(image);
 415    image->dri_format = intel_dri_format(image->format);
 416    image->has_depthstencil = irb->mt->stencil_mt? true : false;
 417
 418    return image;
 419 }
 420
 421 static __DRIimage *
 422 intel_create_image_from_texture(__DRIcontext *context, int target,
 423                                 unsigned texture, int zoffset,
 424                                 int level,
 425                                 unsigned *error,
 426                                 void *loaderPrivate)
 427 {
 428    __DRIimage *image;
 429    struct intel_context *intel = context->driverPrivate;
 430    struct gl_texture_object *obj;
 431    struct intel_texture_object *iobj;
 432    GLuint face = 0;
 433
 434    obj = _mesa_lookup_texture(&intel->ctx, texture);
 435    if (!obj || obj->Target != target) {
 436       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 437       return NULL;
 438    }
 439
 440    if (target == GL_TEXTURE_CUBE_MAP)
 441       face = zoffset;
 442
 443    _mesa_test_texobj_completeness(&intel->ctx, obj);
 444    iobj = intel_texture_object(obj);
 445    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 446       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 447       return NULL;
 448    }
 449
 450    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 451       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 452       return NULL;
 453    }
 454
 455    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 456       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 457       return NULL;
 458    }
 459    image = calloc(1, sizeof *image);
 460    if (image == NULL) {
 461       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 462       return NULL;
 463    }
 464
 465    image->internal_format = obj->Image[face][level]->InternalFormat;
 466    image->format = obj->Image[face][level]->TexFormat;
 467    image->data = loaderPrivate;
 468    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 469    image->dri_format = intel_dri_format(image->format);
 470    image->has_depthstencil = iobj->mt->stencil_mt? true : false;
 471    if (image->dri_format == MESA_FORMAT_NONE) {
 472       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 473       free(image);
 474       return NULL;
 475    }
 476
 477    *error = __DRI_IMAGE_ERROR_SUCCESS;
 478    return image;
 479 }
 480
 481 static void
 482 intel_destroy_image(__DRIimage *image)
 483 {
 484     intel_region_release(&image->region);
 485     free(image);
 486 }
 487
 488 static __DRIimage *
 489 intel_create_image(__DRIscreen *screen,
 490                    int width, int height, int format,
 491                    unsigned int use,
 492                    void *loaderPrivate)
 493 {
 494    __DRIimage *image;
 495    struct intel_screen *intelScreen = screen->driverPrivate;
 496    uint32_t tiling;
 497    int cpp;
 498
 499    tiling = I915_TILING_X;
 500    if (use & __DRI_IMAGE_USE_CURSOR) {
 501       if (width != 64 || height != 64)
 502          return NULL;
 503       tiling = I915_TILING_NONE;
 504    }
 505
 506    image = intel_allocate_image(format, loaderPrivate);
 507    cpp = _mesa_get_format_bytes(image->format);
 508    image->region =
 509       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 510    if (image->region == NULL) {
 511       free(image);
 512       return NULL;
 513    }
 514
 515    intel_setup_image_from_dimensions(image);
 516
 517    return image;
 518 }
 519
 520 static GLboolean
 521 intel_query_image(__DRIimage *image, int attrib, int *value)
 522 {
 523    switch (attrib) {
 524    case __DRI_IMAGE_ATTRIB_STRIDE:
 525       *value = image->region->pitch;
 526       return true;
 527    case __DRI_IMAGE_ATTRIB_HANDLE:
 528       *value = image->region->bo->handle;
 529       return true;
 530    case __DRI_IMAGE_ATTRIB_NAME:
 531       return intel_region_flink(image->region, (uint32_t *) value);
 532    case __DRI_IMAGE_ATTRIB_FORMAT:
 533       *value = image->dri_format;
 534       return true;
 535    case __DRI_IMAGE_ATTRIB_WIDTH:
 536       *value = image->region->width;
 537       return true;
 538    case __DRI_IMAGE_ATTRIB_HEIGHT:
 539       *value = image->region->height;
 540       return true;
 541    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 542       if (image->planar_format == NULL)
 543          return false;
 544       *value = image->planar_format->components;
 545       return true;
 546    case __DRI_IMAGE_ATTRIB_FD:
 547       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 548          return true;
 549       return false;
 550   default:
 551       return false;
 552    }
 553 }
 554
 555 static __DRIimage *
 556 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 557 {
 558    __DRIimage *image;
 559
 560    image = calloc(1, sizeof *image);
 561    if (image == NULL)
 562       return NULL;
 563
 564    intel_region_reference(&image->region, orig_image->region);
 565    if (image->region == NULL) {
 566       free(image);
 567       return NULL;
 568    }
 569
 570    image->internal_format = orig_image->internal_format;
 571    image->planar_format   = orig_image->planar_format;
 572    image->dri_format      = orig_image->dri_format;
 573    image->format          = orig_image->format;
 574    image->offset          = orig_image->offset;
 575    image->width           = orig_image->width;
 576    image->height          = orig_image->height;
 577    image->tile_x          = orig_image->tile_x;
 578    image->tile_y          = orig_image->tile_y;
 579    image->has_depthstencil = orig_image->has_depthstencil;
 580    image->data            = loaderPrivate;
 581
 582    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 583    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 584
 585    return image;
 586 }
 587
 588 static GLboolean
 589 intel_validate_usage(__DRIimage *image, unsigned int use)
 590 {
 591    if (use & __DRI_IMAGE_USE_CURSOR) {
 592       if (image->region->width != 64 || image->region->height != 64)
 593          return GL_FALSE;
 594    }
 595
 596    return GL_TRUE;
 597 }
 598
 599 static __DRIimage *
 600 intel_create_image_from_names(__DRIscreen *screen,
 601                               int width, int height, int fourcc,
 602                               int *names, int num_names,
 603                               int *strides, int *offsets,
 604                               void *loaderPrivate)
 605 {
 606     struct intel_image_format *f = NULL;
 607     __DRIimage *image;
 608     int i, index;
 609
 610     if (screen == NULL || names == NULL || num_names != 1)
 611         return NULL;
 612
 613     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 614         if (intel_image_formats[i].fourcc == fourcc) {
 615            f = &intel_image_formats[i];
 616         }
 617     }
 618
 619     if (f == NULL)
 620         return NULL;
 621
 622     image = intel_create_image_from_name(screen, width, height,
 623                                          __DRI_IMAGE_FORMAT_NONE,
 624                                          names[0], strides[0],
 625                                          loaderPrivate);
 626
 627    if (image == NULL)
 628       return NULL;
 629
 630     image->planar_format = f;
 631     for (i = 0; i < f->nplanes; i++) {
 632         index = f->planes[i].buffer_index;
 633         image->offsets[index] = offsets[index];
 634         image->strides[index] = strides[index];
 635     }
 636
 637     return image;
 638 }
 639
 640 static __DRIimage *
 641 intel_create_image_from_fds(__DRIscreen *screen,
 642                             int width, int height, int fourcc,
 643                             int *fds, int num_fds, int *strides, int *offsets,
 644                             void *loaderPrivate)
 645 {
 646    struct intel_screen *intelScreen = screen->driverPrivate;
 647    struct intel_image_format *f = NULL;
 648    __DRIimage *image;
 649    int i, index;
 650
 651    if (fds == NULL || num_fds != 1)
 652       return NULL;
 653
 654    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 655       if (intel_image_formats[i].fourcc == fourcc) {
 656          f = &intel_image_formats[i];
 657       }
 658    }
 659
 660    if (f == NULL)
 661       return NULL;
 662
 663    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 664    if (image == NULL)
 665       return NULL;
 666
 667    image->region = intel_region_alloc_for_fd(intelScreen,
 668                                              1, width, height,
 669                                              strides[0], fds[0], "image");
 670    if (image->region == NULL) {
 671       free(image);
 672       return NULL;
 673    }
 674
 675    image->planar_format = f;
 676    for (i = 0; i < f->nplanes; i++) {
 677       index = f->planes[i].buffer_index;
 678       image->offsets[index] = offsets[index];
 679       image->strides[index] = strides[index];
 680    }
 681
 682    return image;
 683 }
 684
 685
 686 static __DRIimage *
 687 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 688 {
 689     int width, height, offset, stride, dri_format, index;
 690     struct intel_image_format *f;
 691     uint32_t mask_x, mask_y;
 692     __DRIimage *image;
 693
 694     if (parent == NULL || parent->planar_format == NULL)
 695         return NULL;
 696
 697     f = parent->planar_format;
 698
 699     if (plane >= f->nplanes)
 700         return NULL;
 701
 702     width = parent->region->width >> f->planes[plane].width_shift;
 703     height = parent->region->height >> f->planes[plane].height_shift;
 704     dri_format = f->planes[plane].dri_format;
 705     index = f->planes[plane].buffer_index;
 706     offset = parent->offsets[index];
 707     stride = parent->strides[index];
 708
 709     image = intel_allocate_image(dri_format, loaderPrivate);
 710     if (offset + height * stride > parent->region->bo->size) {
 711        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 712        free(image);
 713        return NULL;
 714     }
 715
 716     image->region = calloc(sizeof(*image->region), 1);
 717     if (image->region == NULL) {
 718        free(image);
 719        return NULL;
 720     }
 721
 722     image->region->cpp = _mesa_get_format_bytes(image->format);
 723     image->region->width = width;
 724     image->region->height = height;
 725     image->region->pitch = stride;
 726     image->region->refcount = 1;
 727     image->region->bo = parent->region->bo;
 728     drm_intel_bo_reference(image->region->bo);
 729     image->region->tiling = parent->region->tiling;
 730     image->offset = offset;
 731     intel_setup_image_from_dimensions(image);
 732
 733     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 734     if (offset & mask_x)
 735        _mesa_warning(NULL,
 736                      "intel_create_sub_image: offset not on tile boundary");
 737
 738     return image;
 739 }
 740
 741 static struct __DRIimageExtensionRec intelImageExtension = {
 742     .base = { __DRI_IMAGE, 7 },
 743
 744     .createImageFromName                = intel_create_image_from_name,
 745     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 746     .destroyImage                       = intel_destroy_image,
 747     .createImage                        = intel_create_image,
 748     .queryImage                         = intel_query_image,
 749     .dupImage                           = intel_dup_image,
 750     .validateUsage                      = intel_validate_usage,
 751     .createImageFromNames               = intel_create_image_from_names,
 752     .fromPlanar                         = intel_from_planar,
 753     .createImageFromTexture             = intel_create_image_from_texture,
 754     .createImageFromFds                 = intel_create_image_from_fds
 755 };
 756
 757 static const __DRIextension *intelScreenExtensions[] = {
 758     &intelTexBufferExtension.base,
 759     &intelFlushExtension.base,
 760     &intelImageExtension.base,
 761     &dri2ConfigQueryExtension.base,
 762     NULL
 763 };
 764
 765 static bool
 766 intel_get_param(__DRIscreen *psp, int param, int *value)
 767 {
 768    int ret;
 769    struct drm_i915_getparam gp;
 770
 771    memset(&gp, 0, sizeof(gp));
 772    gp.param = param;
 773    gp.value = value;
 774
 775    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 776    if (ret) {
 777       if (ret != -EINVAL)
 778          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 779       return false;
 780    }
 781
 782    return true;
 783 }
 784
 785 static bool
 786 intel_get_boolean(__DRIscreen *psp, int param)
 787 {
 788    int value = 0;
 789    return intel_get_param(psp, param, &value) && value;
 790 }
 791
 792 static void
 793 intelDestroyScreen(__DRIscreen * sPriv)
 794 {
 795    struct intel_screen *intelScreen = sPriv->driverPrivate;
 796
 797    dri_bufmgr_destroy(intelScreen->bufmgr);
 798    driDestroyOptionInfo(&intelScreen->optionCache);
 799
 800    free(intelScreen);
 801    sPriv->driverPrivate = NULL;
 802 }
 803
 804
 805 /**
 806  * This is called when we need to set up GL rendering to a new X window.
 807  */
 808 static GLboolean
 809 intelCreateBuffer(__DRIscreen * driScrnPriv,
 810                   __DRIdrawable * driDrawPriv,
 811                   const struct gl_config * mesaVis, GLboolean isPixmap)
 812 {
 813    struct intel_renderbuffer *rb;
 814    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 815    gl_format rgbFormat;
 816    unsigned num_samples = intel_quantize_num_samples(screen, mesaVis->samples);
 817    struct gl_framebuffer *fb;
 818
 819    if (isPixmap)
 820       return false;
 821
 822    fb = CALLOC_STRUCT(gl_framebuffer);
 823    if (!fb)
 824       return false;
 825
 826    _mesa_initialize_window_framebuffer(fb, mesaVis);
 827
 828    if (mesaVis->redBits == 5)
 829       rgbFormat = MESA_FORMAT_RGB565;
 830    else if (mesaVis->sRGBCapable)
 831       rgbFormat = MESA_FORMAT_SARGB8;
 832    else if (mesaVis->alphaBits == 0)
 833       rgbFormat = MESA_FORMAT_XRGB8888;
 834    else {
 835       if (screen->gen >= 4) {
 836          rgbFormat = MESA_FORMAT_SARGB8;
 837          fb->Visual.sRGBCapable = true;
 838       } else {
 839          rgbFormat = MESA_FORMAT_ARGB8888;
 840       }
 841
 842    }
 843
 844    /* setup the hardware-based renderbuffers */
 845    rb = intel_create_renderbuffer(rgbFormat, num_samples);
 846    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 847
 848    if (mesaVis->doubleBufferMode) {
 849       rb = intel_create_renderbuffer(rgbFormat, num_samples);
 850       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 851    }
 852
 853    /*
 854     * Assert here that the gl_config has an expected depth/stencil bit
 855     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 856     * which constructs the advertised configs.)
 857     */
 858    if (mesaVis->depthBits == 24) {
 859       assert(mesaVis->stencilBits == 8);
 860
 861       if (screen->hw_has_separate_stencil) {
 862          rb = intel_create_private_renderbuffer(MESA_FORMAT_X8_Z24,
 863                                                 num_samples);
 864          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 865          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8,
 866                                                 num_samples);
 867          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 868       } else {
 869          /*
 870           * Use combined depth/stencil. Note that the renderbuffer is
 871           * attached to two attachment points.
 872           */
 873          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24,
 874                                                 num_samples);
 875          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 876          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 877       }
 878    }
 879    else if (mesaVis->depthBits == 16) {
 880       assert(mesaVis->stencilBits == 0);
 881       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16,
 882                                              num_samples);
 883       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 884    }
 885    else {
 886       assert(mesaVis->depthBits == 0);
 887       assert(mesaVis->stencilBits == 0);
 888    }
 889
 890    /* now add any/all software-based renderbuffers we may need */
 891    _swrast_add_soft_renderbuffers(fb,
 892                                   false, /* never sw color */
 893                                   false, /* never sw depth */
 894                                   false, /* never sw stencil */
 895                                   mesaVis->accumRedBits > 0,
 896                                   false, /* never sw alpha */
 897                                   false  /* never sw aux */ );
 898    driDrawPriv->driverPrivate = fb;
 899
 900    return true;
 901 }
 902
 903 static void
 904 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 905 {
 906     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 907
 908     _mesa_reference_framebuffer(&fb, NULL);
 909 }
 910
 911 /* There are probably better ways to do this, such as an
 912  * init-designated function to register chipids and createcontext
 913  * functions.
 914  */
 915 extern bool
 916 i830CreateContext(int api,
 917                   const struct gl_config *mesaVis,
 918                   __DRIcontext *driContextPriv,
 919                   unsigned major_version,
 920                   unsigned minor_version,
 921                   unsigned *error,
 922                   void *sharedContextPrivate);
 923
 924 extern bool
 925 i915CreateContext(int api,
 926                   const struct gl_config *mesaVis,
 927                   __DRIcontext *driContextPriv,
 928                   unsigned major_version,
 929                   unsigned minor_version,
 930                   unsigned *error,
 931                   void *sharedContextPrivate);
 932 extern bool
 933 brwCreateContext(int api,
 934                  const struct gl_config *mesaVis,
 935                  __DRIcontext *driContextPriv,
 936                  unsigned major_version,
 937                  unsigned minor_version,
 938                  uint32_t flags,
 939                  unsigned *error,
 940                  void *sharedContextPrivate);
 941
 942 static GLboolean
 943 intelCreateContext(gl_api api,
 944                    const struct gl_config * mesaVis,
 945                    __DRIcontext * driContextPriv,
 946                    unsigned major_version,
 947                    unsigned minor_version,
 948                    uint32_t flags,
 949                    unsigned *error,
 950                    void *sharedContextPrivate)
 951 {
 952    bool success = false;
 953
 954 #ifdef I915
 955    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 956    struct intel_screen *intelScreen = sPriv->driverPrivate;
 957
 958    if (IS_9XX(intelScreen->deviceID)) {
 959       success = i915CreateContext(api, mesaVis, driContextPriv,
 960                                   major_version, minor_version, error,
 961                                   sharedContextPrivate);
 962    } else {
 963       intelScreen->no_vbo = true;
 964       success = i830CreateContext(api, mesaVis, driContextPriv,
 965                                   major_version, minor_version, error,
 966                                   sharedContextPrivate);
 967    }
 968 #else
 969    success = brwCreateContext(api, mesaVis,
 970                               driContextPriv,
 971                               major_version, minor_version, flags,
 972                               error, sharedContextPrivate);
 973 #endif
 974
 975    if (success)
 976       return true;
 977
 978    if (driContextPriv->driverPrivate != NULL)
 979       intelDestroyContext(driContextPriv);
 980
 981    return false;
 982 }
 983
 984 static bool
 985 intel_init_bufmgr(struct intel_screen *intelScreen)
 986 {
 987    __DRIscreen *spriv = intelScreen->driScrnPriv;
 988
 989    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 990
 991    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 992    if (intelScreen->bufmgr == NULL) {
 993       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 994               __func__, __LINE__);
 995       return false;
 996    }
 997
 998    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 999
1000    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
1001       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
1002       return false;
1003    }
1004
1005    return true;
1006 }
1007
1008 /**
1009  * Override intel_screen.hw_has_separate_stencil with environment variable
1010  * INTEL_SEPARATE_STENCIL.
1011  *
1012  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
1013  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
1014  * is ignored.
1015  */
1016 static void
1017 intel_override_separate_stencil(struct intel_screen *screen)
1018 {
1019    const char *s = getenv("INTEL_SEPARATE_STENCIL");
1020    if (!s) {
1021       return;
1022    } else if (!strncmp("0", s, 2)) {
1023       screen->hw_has_separate_stencil = false;
1024    } else if (!strncmp("1", s, 2)) {
1025       screen->hw_has_separate_stencil = true;
1026    } else {
1027       fprintf(stderr,
1028               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
1029               "invalid value and is ignored", s);
1030    }
1031 }
1032
1033 static bool
1034 intel_detect_swizzling(struct intel_screen *screen)
1035 {
1036    drm_intel_bo *buffer;
1037    unsigned long flags = 0;
1038    unsigned long aligned_pitch;
1039    uint32_t tiling = I915_TILING_X;
1040    uint32_t swizzle_mode = 0;
1041
1042    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
1043                                      64, 64, 4,
1044                                      &tiling, &aligned_pitch, flags);
1045    if (buffer == NULL)
1046       return false;
1047
1048    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
1049    drm_intel_bo_unreference(buffer);
1050
1051    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
1052       return false;
1053    else
1054       return true;
1055 }
1056
1057 static __DRIconfig**
1058 intel_screen_make_configs(__DRIscreen *dri_screen)
1059 {
1060    static const gl_format formats[] = {
1061       MESA_FORMAT_RGB565,
1062       MESA_FORMAT_ARGB8888
1063    };
1064
1065    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1066    static const GLenum back_buffer_modes[] = {
1067        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1068    };
1069
1070    static const uint8_t singlesample_samples[1] = {0};
1071    static const uint8_t multisample_samples[2]  = {4, 8};
1072
1073    struct intel_screen *screen = dri_screen->driverPrivate;
1074    uint8_t depth_bits[4], stencil_bits[4];
1075    __DRIconfig **configs = NULL;
1076
1077    /* Generate singlesample configs without accumulation buffer. */
1078    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1079       __DRIconfig **new_configs;
1080       int num_depth_stencil_bits = 2;
1081
1082       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1083        * buffer that has a different number of bits per pixel than the color
1084        * buffer, gen >= 6 supports this.
1085        */
1086       depth_bits[0] = 0;
1087       stencil_bits[0] = 0;
1088
1089       if (formats[i] == MESA_FORMAT_RGB565) {
1090          depth_bits[1] = 16;
1091          stencil_bits[1] = 0;
1092          if (screen->gen >= 6) {
1093              depth_bits[2] = 24;
1094              stencil_bits[2] = 8;
1095              num_depth_stencil_bits = 3;
1096          }
1097       } else {
1098          depth_bits[1] = 24;
1099          stencil_bits[1] = 8;
1100       }
1101
1102       new_configs = driCreateConfigs(formats[i],
1103                                      depth_bits,
1104                                      stencil_bits,
1105                                      num_depth_stencil_bits,
1106                                      back_buffer_modes, 2,
1107                                      singlesample_samples, 1,
1108                                      false);
1109       configs = driConcatConfigs(configs, new_configs);
1110    }
1111
1112    /* Generate the minimum possible set of configs that include an
1113     * accumulation buffer.
1114     */
1115    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1116       __DRIconfig **new_configs;
1117
1118       if (formats[i] == MESA_FORMAT_RGB565) {
1119          depth_bits[0] = 16;
1120          stencil_bits[0] = 0;
1121       } else {
1122          depth_bits[0] = 24;
1123          stencil_bits[0] = 8;
1124       }
1125
1126       new_configs = driCreateConfigs(formats[i],
1127                                      depth_bits, stencil_bits, 1,
1128                                      back_buffer_modes, 1,
1129                                      singlesample_samples, 1,
1130                                      true);
1131       configs = driConcatConfigs(configs, new_configs);
1132    }
1133
1134    /* Generate multisample configs.
1135     *
1136     * This loop breaks early, and hence is a no-op, on gen < 6.
1137     *
1138     * Multisample configs must follow the singlesample configs in order to
1139     * work around an X server bug present in 1.12. The X server chooses to
1140     * associate the first listed RGBA888-Z24S8 config, regardless of its
1141     * sample count, with the 32-bit depth visual used for compositing.
1142     *
1143     * Only doublebuffer configs with GLX_SWAP_UNDEFINED_OML behavior are
1144     * supported.  Singlebuffer configs are not supported because no one wants
1145     * them.
1146     */
1147    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1148       if (screen->gen < 6)
1149          break;
1150
1151       __DRIconfig **new_configs;
1152       const int num_depth_stencil_bits = 2;
1153       int num_msaa_modes = 0;
1154
1155       depth_bits[0] = 0;
1156       stencil_bits[0] = 0;
1157
1158       if (formats[i] == MESA_FORMAT_RGB565) {
1159          depth_bits[1] = 16;
1160          stencil_bits[1] = 0;
1161       } else {
1162          depth_bits[1] = 24;
1163          stencil_bits[1] = 8;
1164       }
1165
1166       if (screen->gen >= 7)
1167          num_msaa_modes = 2;
1168       else if (screen->gen == 6)
1169          num_msaa_modes = 1;
1170
1171       new_configs = driCreateConfigs(formats[i],
1172                                      depth_bits,
1173                                      stencil_bits,
1174                                      num_depth_stencil_bits,
1175                                      back_buffer_modes, 1,
1176                                      multisample_samples,
1177                                      num_msaa_modes,
1178                                      false);
1179       configs = driConcatConfigs(configs, new_configs);
1180    }
1181
1182    if (configs == NULL) {
1183       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1184               __LINE__);
1185       return NULL;
1186    }
1187
1188    return configs;
1189 }
1190
1191 static void
1192 set_max_gl_versions(struct intel_screen *screen)
1193 {
1194    int gl_version_override = _mesa_get_gl_version_override();
1195
1196    switch (screen->gen) {
1197    case 7:
1198       if (screen->kernel_has_gen7_sol_reset) {
1199          screen->max_gl_core_version = 31;
1200          screen->max_gl_compat_version = 30;
1201          screen->max_gl_es1_version = 11;
1202          screen->max_gl_es2_version = 30;
1203       } else {
1204          screen->max_gl_core_version = 0;
1205          screen->max_gl_compat_version = 21;
1206          screen->max_gl_es1_version = 11;
1207          screen->max_gl_es2_version = 20;
1208       }
1209       break;
1210    case 6:
1211       screen->max_gl_core_version = 31;
1212       screen->max_gl_compat_version = 30;
1213       screen->max_gl_es1_version = 11;
1214       screen->max_gl_es2_version = 30;
1215       break;
1216    case 5:
1217    case 4:
1218       screen->max_gl_core_version = 0;
1219       screen->max_gl_compat_version = 21;
1220       screen->max_gl_es1_version = 11;
1221       screen->max_gl_es2_version = 20;
1222       break;
1223    case 3: {
1224       bool has_fragment_shader = driQueryOptionb(&screen->optionCache, "fragment_shader");
1225       bool has_occlusion_query = driQueryOptionb(&screen->optionCache, "stub_occlusion_query");
1226
1227       screen->max_gl_core_version = 0;
1228       screen->max_gl_es1_version = 11;
1229
1230       if (has_fragment_shader && has_occlusion_query) {
1231          screen->max_gl_compat_version = 21;
1232       } else {
1233          screen->max_gl_compat_version = 14;
1234       }
1235
1236       if (has_fragment_shader) {
1237          screen->max_gl_es2_version = 20;
1238       } else {
1239          screen->max_gl_es2_version = 0;
1240       }
1241
1242       break;
1243    }
1244    case 2:
1245       screen->max_gl_core_version = 0;
1246       screen->max_gl_compat_version = 13;
1247       screen->max_gl_es1_version = 11;
1248       screen->max_gl_es2_version = 0;
1249       break;
1250    default:
1251       assert(!"unrecognized intel_screen::gen");
1252       break;
1253    }
1254
1255    if (gl_version_override >= 31) {
1256       screen->max_gl_core_version = MAX2(screen->max_gl_core_version,
1257                                          gl_version_override);
1258    } else {
1259       screen->max_gl_compat_version = MAX2(screen->max_gl_compat_version,
1260                                            gl_version_override);
1261    }
1262
1263 #ifndef FEATURE_ES1
1264    screen->max_gl_es1_version = 0;
1265 #endif
1266
1267 #ifndef FEATURE_ES2
1268    screen->max_gl_es2_version = 0;
1269 #endif
1270 }
1271
1272 /**
1273  * This is the driver specific part of the createNewScreen entry point.
1274  * Called when using DRI2.
1275  *
1276  * \return the struct gl_config supported by this driver
1277  */
1278 static const
1279 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1280 {
1281    struct intel_screen *intelScreen;
1282
1283    if (psp->dri2.loader->base.version <= 2 ||
1284        psp->dri2.loader->getBuffersWithFormat == NULL) {
1285       fprintf(stderr,
1286               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1287               "support required\n");
1288       return false;
1289    }
1290
1291    /* Allocate the private area */
1292    intelScreen = calloc(1, sizeof *intelScreen);
1293    if (!intelScreen) {
1294       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1295       return false;
1296    }
1297    /* parse information in __driConfigOptions */
1298    driParseOptionInfo(&intelScreen->optionCache,
1299                       __driConfigOptions, __driNConfigOptions);
1300
1301    intelScreen->driScrnPriv = psp;
1302    psp->driverPrivate = (void *) intelScreen;
1303
1304    if (!intel_init_bufmgr(intelScreen))
1305        return false;
1306
1307    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1308
1309    intelScreen->kernel_has_gen7_sol_reset =
1310       intel_get_boolean(intelScreen->driScrnPriv,
1311                         I915_PARAM_HAS_GEN7_SOL_RESET);
1312
1313    if (IS_GEN7(intelScreen->deviceID)) {
1314       intelScreen->gen = 7;
1315    } else if (IS_GEN6(intelScreen->deviceID)) {
1316       intelScreen->gen = 6;
1317    } else if (IS_GEN5(intelScreen->deviceID)) {
1318       intelScreen->gen = 5;
1319    } else if (IS_965(intelScreen->deviceID)) {
1320       intelScreen->gen = 4;
1321    } else if (IS_9XX(intelScreen->deviceID)) {
1322       intelScreen->gen = 3;
1323    } else {
1324       intelScreen->gen = 2;
1325    }
1326
1327    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
1328    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
1329
1330    int has_llc = 0;
1331    bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
1332                                   &has_llc);
1333    if (success && has_llc)
1334       intelScreen->hw_has_llc = true;
1335    else if (!success && intelScreen->gen >= 6)
1336       intelScreen->hw_has_llc = true;
1337
1338    intel_override_separate_stencil(intelScreen);
1339
1340    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1341
1342    set_max_gl_versions(intelScreen);
1343
1344    psp->api_mask = (1 << __DRI_API_OPENGL);
1345    if (intelScreen->max_gl_core_version > 0)
1346       psp->api_mask |= (1 << __DRI_API_OPENGL_CORE);
1347    if (intelScreen->max_gl_es1_version > 0)
1348       psp->api_mask |= (1 << __DRI_API_GLES);
1349    if (intelScreen->max_gl_es2_version > 0)
1350       psp->api_mask |= (1 << __DRI_API_GLES2);
1351    if (intelScreen->max_gl_es2_version >= 30)
1352       psp->api_mask |= (1 << __DRI_API_GLES3);
1353
1354    psp->extensions = intelScreenExtensions;
1355
1356    return (const __DRIconfig**) intel_screen_make_configs(psp);
1357 }
1358
1359 struct intel_buffer {
1360    __DRIbuffer base;
1361    struct intel_region *region;
1362 };
1363
1364 static __DRIbuffer *
1365 intelAllocateBuffer(__DRIscreen *screen,
1366                     unsigned attachment, unsigned format,
1367                     int width, int height)
1368 {
1369    struct intel_buffer *intelBuffer;
1370    struct intel_screen *intelScreen = screen->driverPrivate;
1371
1372    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1373           attachment == __DRI_BUFFER_BACK_LEFT);
1374
1375    intelBuffer = calloc(1, sizeof *intelBuffer);
1376    if (intelBuffer == NULL)
1377       return NULL;
1378
1379    /* The front and back buffers are color buffers, which are X tiled. */
1380    intelBuffer->region = intel_region_alloc(intelScreen,
1381                                             I915_TILING_X,
1382                                             format / 8,
1383                                             width,
1384                                             height,
1385                                             true);
1386
1387    if (intelBuffer->region == NULL) {
1388            free(intelBuffer);
1389            return NULL;
1390    }
1391
1392    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1393
1394    intelBuffer->base.attachment = attachment;
1395    intelBuffer->base.cpp = intelBuffer->region->cpp;
1396    intelBuffer->base.pitch = intelBuffer->region->pitch;
1397
1398    return &intelBuffer->base;
1399 }
1400
1401 static void
1402 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1403 {
1404    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1405
1406    intel_region_release(&intelBuffer->region);
1407    free(intelBuffer);
1408 }
1409
1410
1411 const struct __DriverAPIRec driDriverAPI = {
1412    .InitScreen           = intelInitScreen2,
1413    .DestroyScreen        = intelDestroyScreen,
1414    .CreateContext        = intelCreateContext,
1415    .DestroyContext       = intelDestroyContext,
1416    .CreateBuffer         = intelCreateBuffer,
1417    .DestroyBuffer        = intelDestroyBuffer,
1418    .MakeCurrent          = intelMakeCurrent,
1419    .UnbindContext        = intelUnbindContext,
1420    .AllocateBuffer       = intelAllocateBuffer,
1421    .ReleaseBuffer        = intelReleaseBuffer
1422 };
1423
1424 /* This is the table of extensions that the loader will dlsym() for. */
1425 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1426     &driCoreExtension.base,
1427     &driDRI2Extension.base,
1428     NULL
1429 };